From 61cb0ccd6a71ef6f8ce4cb3075aab8be02c7cde7 Mon Sep 17 00:00:00 2001 From: Philippe Riand Date: Tue, 4 Jun 2019 15:24:05 -0400 Subject: [PATCH 01/18] Added a row height parameter --- dist/ui-scroll-grid.js | 2 +- dist/ui-scroll.js | 94 +++++++++++++++++++++++++++------------ dist/ui-scroll.js.map | 2 +- dist/ui-scroll.min.js | 2 +- dist/ui-scroll.min.js.map | 2 +- package-lock.json | 41 +++++------------ package.json | 1 + src/modules/padding.js | 8 ++-- src/modules/viewport.js | 25 +++++++---- src/ui-scroll.js | 41 +++++++++++------ 10 files changed, 131 insertions(+), 87 deletions(-) diff --git a/dist/ui-scroll-grid.js b/dist/ui-scroll-grid.js index f69f8807..031d3618 100644 --- a/dist/ui-scroll-grid.js +++ b/dist/ui-scroll-grid.js @@ -1,7 +1,7 @@ /*! * angular-ui-scroll * https://github.com/angular-ui/ui-scroll - * Version: 1.7.3 -- 2019-05-27T16:57:07.461Z + * Version: 1.7.3 -- 2019-06-04T19:21:29.441Z * License: MIT */ /******/ (function(modules) { // webpackBootstrap diff --git a/dist/ui-scroll.js b/dist/ui-scroll.js index 6a791810..a0e7889e 100644 --- a/dist/ui-scroll.js +++ b/dist/ui-scroll.js @@ -1,7 +1,7 @@ /*! * angular-ui-scroll * https://github.com/angular-ui/ui-scroll - * Version: 1.7.3 -- 2019-05-27T16:57:07.461Z + * Version: 1.7.3 -- 2019-06-04T19:21:29.441Z * License: MIT */ /******/ (function(modules) { // webpackBootstrap @@ -683,14 +683,14 @@ function () { value: function add(item) { for (var i = this.length - 1; i >= 0; i--) { if (this[i].index === item.scope.$index) { - this[i].height = item.element.outerHeight(); + this[i].height = this.rowHeight || item.element.outerHeight(); return; } } this.push({ index: item.scope.$index, - height: item.element.outerHeight() + height: this.rowHeight || item.element.outerHeight() }); this.sort(function (a, b) { return a.index < b.index ? -1 : a.index > b.index ? 1 : 0; @@ -769,16 +769,18 @@ function generateElement(template) { var Padding = /*#__PURE__*/ function () { - function Padding(template) { + function Padding(template, rowHeight) { padding_classCallCheck(this, Padding); this.element = generateElement(template); this.cache = new Cache(); + this.cache.rowHeight = rowHeight; } padding_createClass(Padding, [{ key: "height", value: function height() { + // When called wit a parameter, this sets the height of the padding return this.element.height.apply(this.element, arguments); } }]); @@ -789,7 +791,7 @@ function () { /* harmony default export */ var modules_padding = (Padding); // CONCATENATED MODULE: ./src/modules/viewport.js -function Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding) { +function Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding, rowHeight) { var topPadding = null; var bottomPadding = null; var viewport = viewportController && viewportController.viewport ? viewportController.viewport : angular.element(window); @@ -810,8 +812,8 @@ function Viewport(elementRoutines, buffer, element, viewportController, $rootSco return scope; }, createPaddingElements: function createPaddingElements(template) { - topPadding = new modules_padding(template); - bottomPadding = new modules_padding(template); + topPadding = new modules_padding(template, rowHeight); + bottomPadding = new modules_padding(template, rowHeight); element.before(topPadding.element); element.after(bottomPadding.element); topPadding.height(0); @@ -856,10 +858,11 @@ function Viewport(elementRoutines, buffer, element, viewportController, $rootSco var overage = 0; var overageHeight = 0; var itemHeight = 0; - var emptySpaceHeight = viewport.bottomDataPos() - viewport.bottomVisiblePos() - bufferPadding(); + var emptySpaceHeight = viewport.bottomDataPos() - viewport.bottomVisiblePos() - bufferPadding(); // Simple calculation now using the fixed rowHeight if available. + // Might be optimized if needed for (var i = buffer.length - 1; i >= 0; i--) { - itemHeight = buffer[i].element.outerHeight(true); + itemHeight = rowHeight ? rowHeight : buffer[i].element.outerHeight(true); if (overageHeight + itemHeight > emptySpaceHeight) { break; @@ -885,10 +888,11 @@ function Viewport(elementRoutines, buffer, element, viewportController, $rootSco var overage = 0; var overageHeight = 0; var itemHeight = 0; - var emptySpaceHeight = viewport.topVisiblePos() - viewport.topDataPos() - bufferPadding(); + var emptySpaceHeight = viewport.topVisiblePos() - viewport.topDataPos() - bufferPadding(); // Simple calculation now using the fixed rowHeight if available. + // Might be optimized if needed for (var i = 0; i < buffer.length; i++) { - itemHeight = buffer[i].element.outerHeight(true); + itemHeight = rowHeight ? rowHeight : buffer[i].element.outerHeight(true); if (overageHeight + itemHeight > emptySpaceHeight) { break; @@ -912,16 +916,22 @@ function Viewport(elementRoutines, buffer, element, viewportController, $rootSco if (!buffer.length) { return; } // precise heights calculation based on items that are in buffer or that were in buffer once + // outerHeight(true) == [height+ padding + border + margin] + // The calculation bellow can certainly be replaced by: + // const visibleItemsHeight = rowHeight ? rowHeight * buffer.length + // : buffer.reduce((summ, item) => summ + item.element.outerHeight(true), 0); var visibleItemsHeight = buffer.reduce(function (summ, item) { - return summ + item.element.outerHeight(true); - }, 0); + return summ + (rowHeight ? rowHeight : item.element.outerHeight(true)); + }, 0); // Sinlarly, the calculation of the paddings (top & bottom) can certanly be optimizez + var topPaddingHeight = 0, topCount = 0; topPadding.cache.forEach(function (item) { if (item.index < buffer.first) { - topPaddingHeight += item.height; + topPaddingHeight += item.height; // outerHeight(true) is actually stored in this data member + topCount++; } }); @@ -929,7 +939,8 @@ function Viewport(elementRoutines, buffer, element, viewportController, $rootSco bottomCount = 0; bottomPadding.cache.forEach(function (item) { if (item.index >= buffer.next) { - bottomPaddingHeight += item.height; + bottomPaddingHeight += item.height; // outerHeight(true) is actually stored in this data member + bottomCount++; } }); @@ -1299,26 +1310,41 @@ angular.module('ui.scroll', []).constant('JQLiteExtras', jqLiteExtras_JQLiteExtr return parseNumber(result, defaultValue, isFloat); } - var BUFFER_MIN = 3; - var BUFFER_DEFAULT = 10; - var PADDING_MIN = 0.3; - var PADDING_DEFAULT = 0.5; - var START_INDEX_DEFAULT = 1; - var MAX_VIEWPORT_DELAY = 500; - var VIEWPORT_POLLING_INTERVAL = 50; + var BUFFER_MIN = 3; // Minimum size of the data source request + + var BUFFER_DEFAULT = 10; // Default datasource request size + + var PADDING_MIN = 0.3; // Mininum # of rows in the padding area + + var PADDING_DEFAULT = 0.5; // Default # of rows in the padding area + + var START_INDEX_DEFAULT = 1; // Default start index when requestng the first data block + + var MAX_VIEWPORT_DELAY = 500; // Max time wait (ms) to get the viewport with an height>0 + + var VIEWPORT_POLLING_INTERVAL = 50; // Interval used to check the initial viewport height + var datasource = null; - var itemName = match[1]; - var datasourceName = match[2]; - var viewportController = controllers[0]; + var itemName = match[1]; // Name of the index variable to publish + + var datasourceName = match[2]; // Name of the datasource to request the rows from + + var viewportController = controllers[0]; // ViewportController, as specified in the require option (http://websystique.com/angularjs/angularjs-custom-directives-controllers-require-option-guide/) + var bufferSize = Math.max(BUFFER_MIN, parseNumericAttr($attr.bufferSize, BUFFER_DEFAULT)); var padding = Math.max(PADDING_MIN, parseNumericAttr($attr.padding, PADDING_DEFAULT, true)); - var startIndex = parseNumericAttr($attr.startIndex, START_INDEX_DEFAULT); + var startIndex = parseNumericAttr($attr.startIndex, START_INDEX_DEFAULT); // PHIL: Provide a fixed row height + // + + var rowHeight = parseNumericAttr($attr.rowheight, null, false); // Revision IDs + // + var ridActual = 0; // current data revision id var pending = []; var elementRoutines = new ElementRoutines($injector, $q); var buffer = new ScrollBuffer(elementRoutines, bufferSize, startIndex); - var viewport = new Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding); + var viewport = new Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding, rowHeight); var adapter = new modules_adapter($scope, $parse, $attr, viewport, buffer, doAdjust, reload); if (viewportController) { @@ -1496,6 +1522,10 @@ angular.module('ui.scroll', []).constant('JQLiteExtras', jqLiteExtras_JQLiteExtr } function isElementVisible(wrapper) { + if (rowHeight) { + return true; + } + return wrapper.element.height() && wrapper.element[0].offsetParent; } @@ -1599,7 +1629,9 @@ angular.module('ui.scroll', []).constant('JQLiteExtras', jqLiteExtras_JQLiteExtr inserted: inserted, animated: promises }; - } + } // Adjust the viewport paddings + // + function updatePaddings(rid, updates) { // schedule another doAdjust after animation completion @@ -1747,7 +1779,11 @@ angular.module('ui.scroll', []).constant('JQLiteExtras', jqLiteExtras_JQLiteExtr unbindEvents(); } else { adapter.calculateProperties(); - !$scope.$$phase && $scope.$digest(); + + if (!rowHeight) { + // The digest is forced to calculate the height, which is not necessary when the height is knowm + !$scope.$$phase && $scope.$digest(); + } } } } diff --git a/dist/ui-scroll.js.map b/dist/ui-scroll.js.map index ee87c1d0..150f29b6 100644 --- a/dist/ui-scroll.js.map +++ b/dist/ui-scroll.js.map @@ -1 +1 @@ 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\t\t__webpack_require__.r(ns);\n \t\tObject.defineProperty(ns, 'default', { enumerable: true, value: value });\n \t\tif(mode & 2 && typeof value != 'string') for(var key in value) __webpack_require__.d(ns, key, function(key) { return value[key]; }.bind(null, key));\n \t\treturn ns;\n \t};\n\n \t// getDefaultExport function for compatibility with non-harmony modules\n \t__webpack_require__.n = function(module) {\n \t\tvar getter = module && module.__esModule ?\n \t\t\tfunction getDefault() { return module['default']; } :\n \t\t\tfunction getModuleExports() { return module; };\n \t\t__webpack_require__.d(getter, 'a', getter);\n \t\treturn getter;\n \t};\n\n \t// Object.prototype.hasOwnProperty.call\n \t__webpack_require__.o = function(object, property) { return Object.prototype.hasOwnProperty.call(object, property); };\n\n \t// __webpack_public_path__\n \t__webpack_require__.p = \"\";\n\n\n \t// Load entry module and return exports\n \treturn __webpack_require__(__webpack_require__.s = 1);\n","/*!\r\n globals: angular, window\r\n List of used element methods available in JQuery but not in JQuery Lite\r\n element.before(elem)\r\n element.height()\r\n element.outerHeight(true)\r\n element.height(value) = only for Top/Bottom padding elements\r\n element.scrollTop()\r\n element.scrollTop(value)\r\n */\r\n\r\nexport default class JQLiteExtras {\r\n\r\n registerFor(element) {\r\n let convertToPx, css, getStyle, isWindow;\r\n // angular implementation blows up if elem is the window\r\n css = angular.element.prototype.css;\r\n\r\n element.prototype.css = function (name, value) {\r\n let self = this;\r\n let elem = self[0];\r\n if (!(!elem || elem.nodeType === 3 || elem.nodeType === 8 || !elem.style)) {\r\n return css.call(self, name, value);\r\n }\r\n };\r\n\r\n // as defined in angularjs v1.0.5\r\n isWindow = (obj) => obj && obj.document && obj.location && obj.alert && obj.setInterval;\r\n\r\n function scrollTo(self, direction, value) {\r\n let elem = self[0];\r\n let [method, prop, preserve] = {\r\n top: [\r\n 'scrollTop',\r\n 'pageYOffset',\r\n 'scrollLeft'\r\n ],\r\n left: [\r\n 'scrollLeft',\r\n 'pageXOffset',\r\n 'scrollTop'\r\n ]\r\n }[direction];\r\n\r\n const isValueDefined = typeof value !== 'undefined';\r\n if (isWindow(elem)) {\r\n if (isValueDefined) {\r\n return elem.scrollTo(self[preserve].call(self), value);\r\n }\r\n return (prop in elem) ? elem[prop] : elem.document.documentElement[method];\r\n } else {\r\n if (isValueDefined) {\r\n elem[method] = value;\r\n }\r\n return elem[method];\r\n }\r\n }\r\n\r\n if (window.getComputedStyle) {\r\n getStyle = (elem) => window.getComputedStyle(elem, null);\r\n convertToPx = (elem, value) => parseFloat(value);\r\n } else {\r\n getStyle = (elem) => elem.currentStyle;\r\n convertToPx = (elem, value) => {\r\n let left, result, rs, rsLeft, style;\r\n let core_pnum = /[+-]?(?:\\d*\\.|)\\d+(?:[eE][+-]?\\d+|)/.source;\r\n let rnumnonpx = new RegExp('^(' + core_pnum + ')(?!px)[a-z%]+$', 'i');\r\n\r\n if (!rnumnonpx.test(value)) {\r\n return parseFloat(value);\r\n }\r\n\r\n // ported from JQuery\r\n style = elem.style;\r\n left = style.left;\r\n rs = elem.runtimeStyle;\r\n rsLeft = rs && rs.left;\r\n if (rs) {\r\n rs.left = style.left;\r\n }\r\n // put in the new values to get a computed style out\r\n style.left = value;\r\n result = style.pixelLeft;\r\n style.left = left;\r\n if (rsLeft) {\r\n rs.left = rsLeft;\r\n }\r\n return result;\r\n };\r\n }\r\n\r\n function getMeasurements(elem, measure) {\r\n let base, borderA, borderB, computedMarginA, computedMarginB, computedStyle, dirA, dirB, marginA, marginB, paddingA, paddingB;\r\n\r\n if (isWindow(elem)) {\r\n base = document.documentElement[{height: 'clientHeight', width: 'clientWidth'}[measure]];\r\n\r\n return {\r\n base: base,\r\n padding: 0,\r\n border: 0,\r\n margin: 0\r\n };\r\n }\r\n\r\n // Start with offset property\r\n [\r\n base,\r\n dirA,\r\n dirB\r\n ] = {\r\n width: [\r\n elem.offsetWidth,\r\n 'Left',\r\n 'Right'\r\n ],\r\n height: [\r\n elem.offsetHeight,\r\n 'Top',\r\n 'Bottom'\r\n ]\r\n }[measure];\r\n\r\n computedStyle = getStyle(elem);\r\n paddingA = convertToPx(elem, computedStyle['padding' + dirA]) || 0;\r\n paddingB = convertToPx(elem, computedStyle['padding' + dirB]) || 0;\r\n borderA = convertToPx(elem, computedStyle['border' + dirA + 'Width']) || 0;\r\n borderB = convertToPx(elem, computedStyle['border' + dirB + 'Width']) || 0;\r\n computedMarginA = computedStyle['margin' + dirA];\r\n computedMarginB = computedStyle['margin' + dirB];\r\n\r\n // I do not care for width for now, so this hack is irrelevant\r\n // if ( !supportsPercentMargin )\r\n // computedMarginA = hackPercentMargin( elem, computedStyle, computedMarginA )\r\n // computedMarginB = hackPercentMargin( elem, computedStyle, computedMarginB )\r\n marginA = convertToPx(elem, computedMarginA) || 0;\r\n marginB = convertToPx(elem, computedMarginB) || 0;\r\n\r\n return {\r\n base: base,\r\n padding: paddingA + paddingB,\r\n border: borderA + borderB,\r\n margin: marginA + marginB\r\n };\r\n }\r\n\r\n function getWidthHeight(elem, direction, measure) {\r\n let computedStyle, result;\r\n\r\n let measurements = getMeasurements(elem, direction);\r\n\r\n if (measurements.base > 0) {\r\n return {\r\n base: measurements.base - measurements.padding - measurements.border,\r\n outer: measurements.base,\r\n outerfull: measurements.base + measurements.margin\r\n }[measure];\r\n }\r\n\r\n // Fall back to computed then uncomputed css if necessary\r\n computedStyle = getStyle(elem);\r\n result = computedStyle[direction];\r\n\r\n if (result < 0 || result === null) {\r\n result = elem.style[direction] || 0;\r\n }\r\n\r\n // Normalize \"\", auto, and prepare for extra\r\n result = parseFloat(result) || 0;\r\n\r\n return {\r\n base: result - measurements.padding - measurements.border,\r\n outer: result,\r\n outerfull: result + measurements.padding + measurements.border + measurements.margin\r\n }[measure];\r\n }\r\n\r\n // define missing methods\r\n return angular.forEach({\r\n before(newElem) {\r\n var children, elem, i, j, parent, ref, self;\r\n self = this;\r\n elem = self[0];\r\n parent = self.parent();\r\n children = parent.contents();\r\n if (children[0] === elem) {\r\n return parent.prepend(newElem);\r\n } else {\r\n for (i = j = 1, ref = children.length - 1; 1 <= ref ? j <= ref : j >= ref; i = 1 <= ref ? ++j : --j) {\r\n if (children[i] === elem) {\r\n angular.element(children[i - 1]).after(newElem);\r\n return;\r\n }\r\n }\r\n throw new Error('invalid DOM structure ' + elem.outerHTML);\r\n }\r\n },\r\n height (value){\r\n var self;\r\n self = this;\r\n if (typeof value !== 'undefined') {\r\n if (angular.isNumber(value)) {\r\n value = value + 'px';\r\n }\r\n return css.call(self, 'height', value);\r\n } else {\r\n return getWidthHeight(this[0], 'height', 'base');\r\n }\r\n },\r\n outerHeight(option) {\r\n return getWidthHeight(this[0], 'height', option ? 'outerfull' : 'outer');\r\n },\r\n outerWidth(option) {\r\n return getWidthHeight(this[0], 'width', option ? 'outerfull' : 'outer');\r\n },\r\n\r\n /*\r\n The offset setter method is not implemented\r\n */\r\n offset(value) {\r\n let docElem, win;\r\n let self = this;\r\n let box = {\r\n top: 0,\r\n left: 0\r\n };\r\n let elem = self[0];\r\n let doc = elem && elem.ownerDocument;\r\n\r\n if (arguments.length) {\r\n if (value === undefined) {\r\n return self;\r\n }\r\n // TODO: implement setter\r\n throw new Error('offset setter method is not implemented');\r\n }\r\n\r\n if (!doc) {\r\n return;\r\n }\r\n\r\n docElem = doc.documentElement;\r\n\r\n // TODO: Make sure it's not a disconnected DOM node\r\n\r\n if (elem.getBoundingClientRect != null) {\r\n box = elem.getBoundingClientRect();\r\n }\r\n\r\n win = doc.defaultView || doc.parentWindow;\r\n\r\n return {\r\n top: box.top + (win.pageYOffset || docElem.scrollTop) - (docElem.clientTop || 0),\r\n left: box.left + (win.pageXOffset || docElem.scrollLeft) - (docElem.clientLeft || 0)\r\n };\r\n },\r\n scrollTop(value) {\r\n return scrollTo(this, 'top', value);\r\n },\r\n scrollLeft(value) {\r\n return scrollTo(this, 'left', value);\r\n }\r\n }, (value, key) => {\r\n if (!element.prototype[key]) {\r\n return element.prototype[key] = value;\r\n }\r\n });\r\n }\r\n\r\n}\r\n","const hideClassToken = 'ng-ui-scroll-hide';\r\n\r\nexport default class ElementRoutines {\r\n\r\n static addCSSRules() {\r\n const selector = '.' + hideClassToken;\r\n const rules = 'display: none';\r\n const sheet = document.styleSheets[0];\r\n let index;\r\n try {\r\n index = sheet.cssRules.length;\r\n } catch (err) {\r\n index = 0;\r\n }\r\n if('insertRule' in sheet) {\r\n sheet.insertRule(selector + '{' + rules + '}', index);\r\n }\r\n else if('addRule' in sheet) {\r\n sheet.addRule(selector, rules, index);\r\n }\r\n }\r\n\r\n constructor($injector, $q) {\r\n this.$animate = ($injector.has && $injector.has('$animate')) ? $injector.get('$animate') : null;\r\n this.isAngularVersionLessThen1_3 = angular.version.major === 1 && angular.version.minor < 3;\r\n this.$q = $q;\r\n }\r\n\r\n hideElement(wrapper) {\r\n wrapper.element.addClass(hideClassToken);\r\n }\r\n\r\n showElement(wrapper) {\r\n wrapper.element.removeClass(hideClassToken);\r\n }\r\n\r\n insertElement(newElement, previousElement) {\r\n previousElement.after(newElement);\r\n return [];\r\n }\r\n\r\n removeElement(wrapper) {\r\n wrapper.element.remove();\r\n wrapper.scope.$destroy();\r\n return [];\r\n }\r\n\r\n insertElementAnimated(newElement, previousElement) {\r\n if (!this.$animate) {\r\n return this.insertElement(newElement, previousElement);\r\n }\r\n\r\n if (this.isAngularVersionLessThen1_3) {\r\n const deferred = this.$q.defer();\r\n // no need for parent - previous element is never null\r\n this.$animate.enter(newElement, null, previousElement, () => deferred.resolve());\r\n\r\n return [deferred.promise];\r\n }\r\n\r\n // no need for parent - previous element is never null\r\n return [this.$animate.enter(newElement, null, previousElement)];\r\n }\r\n\r\n removeElementAnimated(wrapper) {\r\n if (!this.$animate) {\r\n return this.removeElement(wrapper);\r\n }\r\n\r\n if (this.isAngularVersionLessThen1_3) {\r\n const deferred = this.$q.defer();\r\n this.$animate.leave(wrapper.element, () => {\r\n wrapper.scope.$destroy();\r\n return deferred.resolve();\r\n });\r\n\r\n return [deferred.promise];\r\n }\r\n\r\n return [(this.$animate.leave(wrapper.element)).then(() => wrapper.scope.$destroy())];\r\n }\r\n}","export default function ScrollBuffer(elementRoutines, bufferSize, startIndex) {\r\n const buffer = Object.create(Array.prototype);\r\n\r\n angular.extend(buffer, {\r\n size: bufferSize,\r\n\r\n reset(startIndex) {\r\n buffer.remove(0, buffer.length);\r\n buffer.eof = false;\r\n buffer.bof = false;\r\n buffer.first = startIndex;\r\n buffer.next = startIndex;\r\n buffer.minIndex = startIndex;\r\n buffer.maxIndex = startIndex;\r\n buffer.minIndexUser = null;\r\n buffer.maxIndexUser = null;\r\n },\r\n\r\n append(items) {\r\n items.forEach((item) => {\r\n ++buffer.next;\r\n buffer.insert('append', item);\r\n });\r\n buffer.maxIndex = buffer.eof ? buffer.next - 1 : Math.max(buffer.next - 1, buffer.maxIndex);\r\n },\r\n\r\n prepend(items) {\r\n items.reverse().forEach((item) => {\r\n --buffer.first;\r\n buffer.insert('prepend', item);\r\n });\r\n buffer.minIndex = buffer.bof ? buffer.minIndex = buffer.first : Math.min(buffer.first, buffer.minIndex);\r\n },\r\n\r\n /**\r\n * inserts wrapped element in the buffer\r\n * the first argument is either operation keyword (see below) or a number for operation 'insert'\r\n * for insert the number is the index for the buffer element the new one have to be inserted after\r\n * operations: 'append', 'prepend', 'insert', 'remove', 'update', 'none'\r\n */\r\n insert(operation, item, isTop) {\r\n const wrapper = {\r\n item: item\r\n };\r\n\r\n if (operation % 1 === 0) {// it is an insert\r\n wrapper.op = 'insert';\r\n buffer.splice(operation, 0, wrapper);\r\n if(isTop) {\r\n buffer.first--;\r\n }\r\n else {\r\n buffer.next++;\r\n }\r\n } else {\r\n wrapper.op = operation;\r\n switch (operation) {\r\n case 'append':\r\n buffer.push(wrapper);\r\n break;\r\n case 'prepend':\r\n buffer.unshift(wrapper);\r\n break;\r\n }\r\n }\r\n },\r\n\r\n // removes elements from buffer\r\n remove(arg1, arg2) {\r\n if (angular.isNumber(arg1)) {\r\n // removes items from arg1 (including) through arg2 (excluding)\r\n for (let i = arg1; i < arg2; i++) {\r\n elementRoutines.removeElement(buffer[i]);\r\n }\r\n return buffer.splice(arg1, arg2 - arg1);\r\n }\r\n // removes single item(wrapper) from the buffer\r\n buffer.splice(buffer.indexOf(arg1), 1);\r\n if(arg1._op === 'isTop' && buffer.first === this.getAbsMinIndex()) {\r\n this.incrementMinIndex();\r\n }\r\n else {\r\n this.decrementMaxIndex();\r\n }\r\n if(arg1._op === 'isTop') {\r\n buffer.first++;\r\n }\r\n else {\r\n buffer.next--;\r\n }\r\n if(!buffer.length) {\r\n buffer.first = 1;\r\n buffer.next = 1;\r\n }\r\n\r\n return elementRoutines.removeElementAnimated(arg1);\r\n },\r\n\r\n incrementMinIndex() {\r\n if(buffer.minIndexUser !== null) {\r\n if(buffer.minIndex > buffer.minIndexUser) {\r\n buffer.minIndexUser++;\r\n return;\r\n }\r\n if(buffer.minIndex === buffer.minIndexUser) {\r\n buffer.minIndexUser++;\r\n }\r\n }\r\n buffer.minIndex++;\r\n },\r\n\r\n decrementMaxIndex() {\r\n if(buffer.maxIndexUser !== null && buffer.maxIndex <= buffer.maxIndexUser) {\r\n buffer.maxIndexUser--;\r\n }\r\n buffer.maxIndex--;\r\n },\r\n\r\n getAbsMinIndex() {\r\n if(buffer.minIndexUser !== null) {\r\n return Math.min(buffer.minIndexUser, buffer.minIndex);\r\n }\r\n return buffer.minIndex;\r\n },\r\n\r\n getAbsMaxIndex() {\r\n if(buffer.maxIndexUser !== null) {\r\n return Math.max(buffer.maxIndexUser, buffer.maxIndex);\r\n }\r\n return buffer.maxIndex;\r\n },\r\n\r\n effectiveHeight(elements) {\r\n if (!elements.length) {\r\n return 0;\r\n }\r\n let top = Number.MAX_VALUE;\r\n let bottom = Number.NEGATIVE_INFINITY;\r\n elements.forEach((wrapper) => {\r\n if (wrapper.element[0].offsetParent) {\r\n // element style is not display:none\r\n top = Math.min(top, wrapper.element.offset().top);\r\n bottom = Math.max(bottom, wrapper.element.offset().top + wrapper.element.outerHeight(true));\r\n }\r\n });\r\n return Math.max(0, bottom - top);\r\n }\r\n\r\n });\r\n\r\n buffer.reset(startIndex);\r\n\r\n return buffer;\r\n}\r\n","// Can't just extend the Array, due to Babel does not support built-in classes extending\r\n// This solution was taken from https://stackoverflow.com/questions/46897414/es6-class-extends-array-workaround-for-es5-babel-transpile\r\nclass CacheProto {\r\n add(item) {\r\n for (let i = this.length - 1; i >= 0; i--) {\r\n if (this[i].index === item.scope.$index) {\r\n this[i].height = item.element.outerHeight();\r\n return;\r\n }\r\n }\r\n this.push({\r\n index: item.scope.$index,\r\n height: item.element.outerHeight()\r\n });\r\n this.sort((a, b) => ((a.index < b.index) ? -1 : ((a.index > b.index) ? 1 : 0)));\r\n }\r\n\r\n remove(argument, _isTop) {\r\n const index = argument % 1 === 0 ? argument : argument.scope.$index;\r\n const isTop = argument % 1 === 0 ? _isTop : argument._op === 'isTop';\r\n for (let i = this.length - 1; i >= 0; i--) {\r\n if (this[i].index === index) {\r\n this.splice(i, 1);\r\n break;\r\n }\r\n }\r\n if(!isTop) {\r\n for (let i = this.length - 1; i >= 0; i--) {\r\n if (this[i].index > index) {\r\n this[i].index--;\r\n }\r\n }\r\n }\r\n }\r\n\r\n clear() {\r\n this.length = 0;\r\n }\r\n}\r\n\r\nfunction Cache() {\r\n const instance = [];\r\n instance.push.apply(instance, arguments);\r\n Object.setPrototypeOf(instance, Cache.prototype);\r\n return instance;\r\n}\r\nCache.prototype = Object.create(Array.prototype);\r\nObject.getOwnPropertyNames(CacheProto.prototype).forEach(methodName =>\r\n Cache.prototype[methodName] = CacheProto.prototype[methodName]\r\n);\r\n\r\nfunction generateElement(template) {\r\n if(template.nodeType !== Node.ELEMENT_NODE) {\r\n throw new Error('ui-scroll directive requires an Element node for templating the view');\r\n }\r\n let element;\r\n switch (template.tagName.toLowerCase()) {\r\n case 'dl':\r\n throw new Error(`ui-scroll directive does not support <${template.tagName}> as a repeating tag: ${template.outerHTML}`);\r\n case 'tr':\r\n let table = angular.element('
');\r\n element = table.find('tr');\r\n break;\r\n case 'li':\r\n element = angular.element('
  • ');\r\n break;\r\n default:\r\n element = angular.element('
    ');\r\n }\r\n return element;\r\n}\r\n\r\nclass Padding {\r\n constructor(template) {\r\n this.element = generateElement(template);\r\n this.cache = new Cache();\r\n }\r\n\r\n height() {\r\n return this.element.height.apply(this.element, arguments);\r\n }\r\n}\r\n\r\nexport default Padding;","import Padding from './padding';\r\n\r\nexport default function Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding) {\r\n let topPadding = null;\r\n let bottomPadding = null;\r\n const viewport = viewportController && viewportController.viewport ? viewportController.viewport : angular.element(window);\r\n const container = viewportController && viewportController.container ? viewportController.container : undefined;\r\n const scope = viewportController && viewportController.scope ? viewportController.scope : $rootScope;\r\n\r\n viewport.css({\r\n 'overflow-anchor': 'none',\r\n 'overflow-y': 'auto',\r\n 'display': 'block'\r\n });\r\n\r\n function bufferPadding() {\r\n return viewport.outerHeight() * padding; // some extra space to initiate preload\r\n }\r\n\r\n angular.extend(viewport, {\r\n getScope() {\r\n return scope;\r\n },\r\n\r\n createPaddingElements(template) {\r\n topPadding = new Padding(template);\r\n bottomPadding = new Padding(template);\r\n element.before(topPadding.element);\r\n element.after(bottomPadding.element);\r\n topPadding.height(0);\r\n bottomPadding.height(0);\r\n },\r\n\r\n applyContainerStyle() {\r\n if (!container) {\r\n return true;\r\n }\r\n if(container !== viewport) {\r\n viewport.css('height', window.getComputedStyle(container[0]).height);\r\n }\r\n return viewport.height() > 0;\r\n },\r\n\r\n bottomDataPos() {\r\n let scrollHeight = viewport[0].scrollHeight;\r\n scrollHeight = scrollHeight != null ? scrollHeight : viewport[0].document.documentElement.scrollHeight;\r\n return scrollHeight - bottomPadding.height();\r\n },\r\n\r\n topDataPos() {\r\n return topPadding.height();\r\n },\r\n\r\n bottomVisiblePos() {\r\n return viewport.scrollTop() + viewport.outerHeight();\r\n },\r\n\r\n topVisiblePos() {\r\n return viewport.scrollTop();\r\n },\r\n\r\n insertElement(e, sibling) {\r\n return elementRoutines.insertElement(e, sibling || topPadding.element);\r\n },\r\n\r\n insertElementAnimated(e, sibling) {\r\n return elementRoutines.insertElementAnimated(e, sibling || topPadding.element);\r\n },\r\n\r\n shouldLoadBottom() {\r\n return !buffer.eof && viewport.bottomDataPos() < viewport.bottomVisiblePos() + bufferPadding();\r\n },\r\n\r\n clipBottom() {\r\n // clip the invisible items off the bottom\r\n let overage = 0;\r\n let overageHeight = 0;\r\n let itemHeight = 0;\r\n let emptySpaceHeight = viewport.bottomDataPos() - viewport.bottomVisiblePos() - bufferPadding();\r\n\r\n for (let i = buffer.length - 1; i >= 0; i--) {\r\n itemHeight = buffer[i].element.outerHeight(true);\r\n if (overageHeight + itemHeight > emptySpaceHeight) {\r\n break;\r\n }\r\n bottomPadding.cache.add(buffer[i]);\r\n overageHeight += itemHeight;\r\n overage++;\r\n }\r\n\r\n if (overage > 0) {\r\n buffer.eof = false;\r\n buffer.remove(buffer.length - overage, buffer.length);\r\n buffer.next -= overage;\r\n viewport.adjustPaddings();\r\n }\r\n },\r\n\r\n shouldLoadTop() {\r\n return !buffer.bof && (viewport.topDataPos() > viewport.topVisiblePos() - bufferPadding());\r\n },\r\n\r\n clipTop() {\r\n // clip the invisible items off the top\r\n let overage = 0;\r\n let overageHeight = 0;\r\n let itemHeight = 0;\r\n let emptySpaceHeight = viewport.topVisiblePos() - viewport.topDataPos() - bufferPadding();\r\n\r\n for (let i = 0; i < buffer.length; i++) {\r\n itemHeight = buffer[i].element.outerHeight(true);\r\n if (overageHeight + itemHeight > emptySpaceHeight) {\r\n break;\r\n }\r\n topPadding.cache.add(buffer[i]);\r\n overageHeight += itemHeight;\r\n overage++;\r\n }\r\n\r\n if (overage > 0) {\r\n // we need to adjust top padding element before items are removed from top\r\n // to avoid strange behaviour of scroll bar during remove top items when we are at the very bottom\r\n topPadding.height(topPadding.height() + overageHeight);\r\n buffer.bof = false;\r\n buffer.remove(0, overage);\r\n buffer.first += overage;\r\n }\r\n },\r\n\r\n adjustPaddings() {\r\n if (!buffer.length) {\r\n return;\r\n }\r\n\r\n // precise heights calculation based on items that are in buffer or that were in buffer once\r\n const visibleItemsHeight = buffer.reduce((summ, item) => summ + item.element.outerHeight(true), 0);\r\n\r\n let topPaddingHeight = 0, topCount = 0;\r\n topPadding.cache.forEach(item => {\r\n if(item.index < buffer.first) {\r\n topPaddingHeight += item.height;\r\n topCount++;\r\n }\r\n });\r\n\r\n let bottomPaddingHeight = 0, bottomCount = 0;\r\n bottomPadding.cache.forEach(item => {\r\n if(item.index >= buffer.next) {\r\n bottomPaddingHeight += item.height;\r\n bottomCount++;\r\n }\r\n });\r\n\r\n const totalHeight = visibleItemsHeight + topPaddingHeight + bottomPaddingHeight;\r\n const averageItemHeight = totalHeight / (topCount + bottomCount + buffer.length);\r\n\r\n // average heights calculation, items that have never been reached\r\n let adjustTopPadding = buffer.minIndexUser !== null && buffer.minIndex > buffer.minIndexUser;\r\n let adjustBottomPadding = buffer.maxIndexUser !== null && buffer.maxIndex < buffer.maxIndexUser;\r\n let topPaddingHeightAdd = adjustTopPadding ? (buffer.minIndex - buffer.minIndexUser) * averageItemHeight : 0;\r\n let bottomPaddingHeightAdd = adjustBottomPadding ? (buffer.maxIndexUser - buffer.maxIndex) * averageItemHeight : 0;\r\n\r\n // paddings combine adjustment\r\n topPadding.height(topPaddingHeight + topPaddingHeightAdd);\r\n bottomPadding.height(bottomPaddingHeight + bottomPaddingHeightAdd);\r\n },\r\n\r\n onAfterMinIndexSet(topPaddingHeightOld) {\r\n // additional scrollTop adjustment in case of datasource.minIndex external set\r\n if (buffer.minIndexUser !== null && buffer.minIndex > buffer.minIndexUser) {\r\n let diff = topPadding.height() - topPaddingHeightOld;\r\n viewport.scrollTop(viewport.scrollTop() + diff);\r\n while((diff -= viewport.scrollTop()) > 0) {\r\n bottomPadding.height(bottomPadding.height() + diff);\r\n viewport.scrollTop(viewport.scrollTop() + diff);\r\n }\r\n }\r\n },\r\n\r\n onAfterPrepend(updates) {\r\n if (!updates.prepended.length)\r\n return;\r\n const height = buffer.effectiveHeight(updates.prepended);\r\n const paddingHeight = topPadding.height() - height;\r\n if (paddingHeight >= 0) {\r\n topPadding.height(paddingHeight);\r\n }\r\n else {\r\n topPadding.height(0);\r\n viewport.scrollTop(viewport.scrollTop() - paddingHeight);\r\n }\r\n },\r\n\r\n resetTopPadding() {\r\n topPadding.height(0);\r\n topPadding.cache.clear();\r\n },\r\n\r\n resetBottomPadding() {\r\n bottomPadding.height(0);\r\n bottomPadding.cache.clear();\r\n },\r\n\r\n removeCacheItem(item, isTop) {\r\n topPadding.cache.remove(item, isTop);\r\n bottomPadding.cache.remove(item, isTop);\r\n },\r\n\r\n removeItem(item) {\r\n this.removeCacheItem(item);\r\n return buffer.remove(item);\r\n }\r\n });\r\n\r\n return viewport;\r\n}\r\n","class Adapter {\r\n\r\n constructor($scope, $parse, $attr, viewport, buffer, doAdjust, reload) {\r\n this.$parse = $parse;\r\n this.$attr = $attr;\r\n this.viewport = viewport;\r\n this.buffer = buffer;\r\n\r\n this.doAdjust = doAdjust;\r\n this.reload = reload;\r\n\r\n this.isLoading = false;\r\n this.disabled = false;\r\n\r\n const viewportScope = viewport.getScope();\r\n this.startScope = viewportScope.$parent ? viewportScope : $scope;\r\n\r\n this.publicContext = {};\r\n this.assignAdapter($attr.adapter);\r\n this.generatePublicContext();\r\n }\r\n\r\n assignAdapter(adapterAttr) {\r\n if (!adapterAttr || !(adapterAttr = adapterAttr.replace(/^\\s+|\\s+$/gm, ''))) {\r\n return;\r\n }\r\n let adapterOnScope;\r\n\r\n try {\r\n this.$parse(adapterAttr).assign(this.startScope, {});\r\n adapterOnScope = this.$parse(adapterAttr)(this.startScope);\r\n }\r\n catch (error) {\r\n error.message = `Angular ui-scroll Adapter assignment exception.\\n` +\r\n `Can't parse \"${adapterAttr}\" expression.\\n` +\r\n error.message;\r\n throw error;\r\n }\r\n\r\n angular.extend(adapterOnScope, this.publicContext);\r\n this.publicContext = adapterOnScope;\r\n }\r\n\r\n generatePublicContext() {\r\n // these methods will be accessible out of ui-scroll via user defined adapter\r\n const publicMethods = ['reload', 'applyUpdates', 'append', 'prepend', 'isBOF', 'isEOF', 'isEmpty'];\r\n for (let i = publicMethods.length - 1; i >= 0; i--) {\r\n this.publicContext[publicMethods[i]] = this[publicMethods[i]].bind(this);\r\n }\r\n\r\n // these read-only props will be accessible out of ui-scroll via user defined adapter\r\n const publicProps = ['isLoading', 'topVisible', 'topVisibleElement', 'topVisibleScope', 'bottomVisible', 'bottomVisibleElement', 'bottomVisibleScope'];\r\n for (let i = publicProps.length - 1; i >= 0; i--) {\r\n let property, attr = this.$attr[publicProps[i]];\r\n Object.defineProperty(this, publicProps[i], {\r\n get: () => property,\r\n set: (value) => {\r\n property = value;\r\n this.publicContext[publicProps[i]] = value;\r\n if (attr) {\r\n this.$parse(attr).assign(this.startScope, value);\r\n }\r\n }\r\n });\r\n }\r\n\r\n // non-read-only public property\r\n Object.defineProperty(this.publicContext, 'disabled', {\r\n get: () => this.disabled,\r\n set: (value) => (!(this.disabled = value)) ? this.doAdjust() : null\r\n });\r\n }\r\n\r\n loading(value) {\r\n this.isLoading = value;\r\n }\r\n\r\n isBOF() {\r\n return this.buffer.bof;\r\n }\r\n\r\n isEOF() {\r\n return this.buffer.eof;\r\n }\r\n\r\n isEmpty() {\r\n return !this.buffer.length;\r\n }\r\n\r\n append(newItems) {\r\n this.buffer.append(newItems);\r\n this.doAdjust();\r\n this.viewport.clipTop();\r\n this.viewport.clipBottom();\r\n }\r\n\r\n prepend(newItems) {\r\n this.buffer.prepend(newItems);\r\n this.doAdjust();\r\n this.viewport.clipTop();\r\n this.viewport.clipBottom();\r\n }\r\n\r\n applyUpdates(arg1, arg2) {\r\n if (typeof arg1 === 'function') {\r\n this.applyUpdatesFunc(arg1);\r\n } else {\r\n this.applyUpdatesIndex(arg1, arg2);\r\n }\r\n this.doAdjust();\r\n }\r\n\r\n applyUpdatesFunc(cb) {\r\n this.buffer.slice(0).forEach((wrapper) => {\r\n // we need to do it on the buffer clone, because buffer content\r\n // may change as we iterate through\r\n this.applyUpdate(wrapper, cb(wrapper.item, wrapper.scope, wrapper.element));\r\n });\r\n }\r\n\r\n applyUpdatesIndex(index, newItems) {\r\n if (index % 1 !== 0) {\r\n throw new Error('applyUpdates - ' + index + ' is not a valid index (should be an integer)');\r\n }\r\n const _index = index - this.buffer.first;\r\n\r\n // apply updates only within buffer\r\n if (_index >= 0 && _index < this.buffer.length) {\r\n this.applyUpdate(this.buffer[_index], newItems);\r\n }\r\n // out-of-buffer case: deletion may affect Paddings\r\n else if(index >= this.buffer.getAbsMinIndex() && index <= this.buffer.getAbsMaxIndex()) {\r\n if(angular.isArray(newItems) && !newItems.length) {\r\n this.viewport.removeCacheItem(index, index === this.buffer.minIndex);\r\n if(index === this.buffer.getAbsMinIndex()) {\r\n this.buffer.incrementMinIndex();\r\n }\r\n else {\r\n this.buffer.decrementMaxIndex();\r\n }\r\n }\r\n }\r\n }\r\n\r\n applyUpdate(wrapper, newItems) {\r\n if (!angular.isArray(newItems)) {\r\n return;\r\n }\r\n let position = this.buffer.indexOf(wrapper);\r\n if (!newItems.reverse().some(newItem => newItem === wrapper.item)) {\r\n wrapper.op = 'remove';\r\n if(position === 0 && !newItems.length) {\r\n wrapper._op = 'isTop'; // to catch \"first\" edge case on remove\r\n }\r\n }\r\n newItems.forEach((newItem) => {\r\n if (newItem === wrapper.item) {\r\n position--;\r\n } else {\r\n // 3 parameter (isTop) is to catch \"first\" edge case on insert\r\n this.buffer.insert(position + 1, newItem, position === -1);\r\n }\r\n });\r\n }\r\n\r\n calculateProperties() {\r\n let rowTop = null, topHeight = 0;\r\n let topDone = false, bottomDone = false;\r\n const length = this.buffer.length;\r\n\r\n for (let i = 0; i < length; i++) {\r\n const item = this.buffer[i];\r\n const itemTop = item.element.offset().top;\r\n\r\n if (rowTop !== itemTop) { // a new row condition\r\n const itemHeight = item.element.outerHeight(true);\r\n const top = this.viewport.topDataPos() + topHeight + itemHeight;\r\n\r\n if (!topDone && top > this.viewport.topVisiblePos()) {\r\n topDone = true;\r\n this['topVisible'] = item.item;\r\n this['topVisibleElement'] = item.element;\r\n this['topVisibleScope'] = item.scope;\r\n }\r\n if (!bottomDone && (top >= this.viewport.bottomVisiblePos() || (i === length - 1 && this.isEOF()))) {\r\n bottomDone = true;\r\n this['bottomVisible'] = item.item;\r\n this['bottomVisibleElement'] = item.element;\r\n this['bottomVisibleScope'] = item.scope;\r\n }\r\n topHeight += itemHeight;\r\n }\r\n rowTop = itemTop;\r\n\r\n if (topDone && bottomDone) {\r\n break;\r\n }\r\n }\r\n }\r\n\r\n}\r\n\r\nexport default Adapter;\r\n","import JQLiteExtras from './modules/jqLiteExtras';\nimport ElementRoutines from './modules/elementRoutines.js';\nimport ScrollBuffer from './modules/buffer.js';\nimport Viewport from './modules/viewport.js';\nimport Adapter from './modules/adapter.js';\n\nangular.module('ui.scroll', [])\n\n .constant('JQLiteExtras', JQLiteExtras)\n .run(['JQLiteExtras', (JQLiteExtras) => {\n !window.jQuery ? (new JQLiteExtras()).registerFor(angular.element) : null;\n ElementRoutines.addCSSRules();\n }])\n\n .directive('uiScrollViewport', function () {\n return {\n restrict: 'A',\n controller: [\n '$scope',\n '$element',\n function (scope, element) {\n this.container = element;\n this.viewport = element;\n this.scope = scope;\n\n angular.forEach(element.children(), child => {\n if (child.tagName.toLowerCase() === 'tbody') {\n this.viewport = angular.element(child);\n }\n });\n\n return this;\n }\n ]\n };\n })\n\n .directive('uiScroll', [\n '$log',\n '$injector',\n '$rootScope',\n '$timeout',\n '$interval',\n '$q',\n '$parse',\n function (console, $injector, $rootScope, $timeout, $interval, $q, $parse) {\n\n return {\n require: ['?^uiScrollViewport'],\n restrict: 'A',\n transclude: 'element',\n priority: 1000,\n terminal: true,\n link: link\n };\n\n function link($scope, element, $attr, controllers, linker) {\n const match = $attr.uiScroll.match(/^\\s*(\\w+)\\s+in\\s+([(\\w|\\$)\\.]+)\\s*$/);\n if (!match) {\n throw new Error('Expected uiScroll in form of \\'_item_ in _datasource_\\' but got \\'' + $attr.uiScroll + '\\'');\n }\n\n function parseNumber(value, defaultValue, isFloat) {\n if (!isFloat) {\n value = value === null ? defaultValue : Math.floor(value);\n }\n return isNaN(value) ? defaultValue : value;\n }\n\n function parseNumericAttr(value, defaultValue, isFloat) {\n const result = $parse(value)($scope);\n return parseNumber(result, defaultValue, isFloat);\n }\n\n const BUFFER_MIN = 3;\n const BUFFER_DEFAULT = 10;\n const PADDING_MIN = 0.3;\n const PADDING_DEFAULT = 0.5;\n const START_INDEX_DEFAULT = 1;\n const MAX_VIEWPORT_DELAY = 500;\n const VIEWPORT_POLLING_INTERVAL = 50;\n\n let datasource = null;\n const itemName = match[1];\n const datasourceName = match[2];\n const viewportController = controllers[0];\n const bufferSize = Math.max(BUFFER_MIN, parseNumericAttr($attr.bufferSize, BUFFER_DEFAULT));\n const padding = Math.max(PADDING_MIN, parseNumericAttr($attr.padding, PADDING_DEFAULT, true));\n let startIndex = parseNumericAttr($attr.startIndex, START_INDEX_DEFAULT);\n let ridActual = 0; // current data revision id\n let pending = [];\n\n const elementRoutines = new ElementRoutines($injector, $q);\n const buffer = new ScrollBuffer(elementRoutines, bufferSize, startIndex);\n const viewport = new Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding);\n const adapter = new Adapter($scope, $parse, $attr, viewport, buffer, doAdjust, reload);\n\n if (viewportController) {\n viewportController.adapter = adapter;\n }\n\n const isDatasourceValid = () =>\n Object.prototype.toString.call(datasource) === '[object Object]' && typeof datasource.get === 'function';\n\n datasource = $parse(datasourceName)($scope); // try to get datasource on scope\n if (!isDatasourceValid()) {\n datasource = $injector.get(datasourceName); // try to inject datasource as service\n if (!isDatasourceValid()) {\n throw new Error(datasourceName + ' is not a valid datasource');\n }\n }\n\n let onRenderHandlers = [];\n function onRenderHandlersRunner() {\n onRenderHandlers.forEach(handler => handler.run());\n onRenderHandlers = [];\n }\n function persistDatasourceIndex(datasource, propName) {\n let getter;\n // need to postpone min/maxIndexUser processing if the view is empty\n if(angular.isNumber(datasource[propName])) {\n getter = datasource[propName];\n if(angular.isNumber(getter)) {\n onRenderHandlers = onRenderHandlers.filter(handler => handler.id !== propName);\n onRenderHandlers.push({\n id: propName,\n run: () => datasource[propName] = getter\n });\n }\n }\n }\n\n function defineDatasourceIndex(datasource, propName, propUserName) {\n const descriptor = Object.getOwnPropertyDescriptor(datasource, propName);\n if (descriptor && (descriptor.set || descriptor.get)) {\n return;\n }\n let getter;\n persistDatasourceIndex(datasource, propName);\n Object.defineProperty(datasource, propName, {\n set: (value) => {\n getter = value;\n if(pending.length && !buffer.length) {\n persistDatasourceIndex(datasource, propName);\n return;\n }\n buffer[propUserName] = value;\n const topPaddingHeightOld = viewport.topDataPos();\n viewport.adjustPaddings();\n if (propName === 'minIndex') {\n viewport.onAfterMinIndexSet(topPaddingHeightOld);\n }\n },\n get: () => getter\n });\n }\n\n defineDatasourceIndex(datasource, 'minIndex', 'minIndexUser');\n defineDatasourceIndex(datasource, 'maxIndex', 'maxIndexUser');\n\n const fetchNext = (datasource.get.length !== 2) ?\n (success) => datasource.get(buffer.next, bufferSize, success) :\n (success) => {\n datasource.get({\n index: buffer.next,\n append: buffer.length ? buffer[buffer.length - 1].item : void 0,\n count: bufferSize\n }, success);\n };\n\n const fetchPrevious = (datasource.get.length !== 2) ?\n (success) => datasource.get(buffer.first - bufferSize, bufferSize, success) :\n (success) => {\n datasource.get({\n index: buffer.first - bufferSize,\n prepend: buffer.length ? buffer[0].item : void 0,\n count: bufferSize\n }, success);\n };\n\n const initialize = () => {\n let tryCount = 0;\n if(!viewport.applyContainerStyle()) {\n const timer = $interval(() => {\n tryCount++;\n if(viewport.applyContainerStyle()) {\n $interval.cancel(timer);\n doAdjust();\n }\n if(tryCount * VIEWPORT_POLLING_INTERVAL >= MAX_VIEWPORT_DELAY) {\n $interval.cancel(timer);\n throw Error(`ui-scroll directive requires a viewport with non-zero height in ${MAX_VIEWPORT_DELAY}ms`);\n }\n }, VIEWPORT_POLLING_INTERVAL);\n }\n else {\n doAdjust();\n }\n };\n\n /**\n * Build padding elements\n *\n * Calling linker is the only way I found to get access to the tag name of the template\n * to prevent the directive scope from pollution a new scope is created and destroyed\n * right after the builder creation is completed\n */\n linker((clone, scope) => {\n viewport.createPaddingElements(clone[0]);\n // we do not include the clone in the DOM. It means that the nested directives will not\n // be able to reach the parent directives, but in this case it is intentional because we\n // created the clone to access the template tag name\n scope.$destroy();\n clone.remove();\n });\n\n $scope.$on('$destroy', () => {\n unbindEvents();\n viewport.unbind('mousewheel', wheelHandler);\n });\n\n viewport.bind('mousewheel', wheelHandler);\n\n initialize();\n\n /* Private function definitions */\n\n function isInvalid(rid) {\n return (rid && rid !== ridActual) || $scope.$$destroyed;\n }\n\n function bindEvents() {\n viewport.bind('resize', resizeAndScrollHandler);\n viewport.bind('scroll', resizeAndScrollHandler);\n }\n\n function unbindEvents() {\n viewport.unbind('resize', resizeAndScrollHandler);\n viewport.unbind('scroll', resizeAndScrollHandler);\n }\n\n function reload() {\n viewport.resetTopPadding();\n viewport.resetBottomPadding();\n if (arguments.length) {\n startIndex = parseNumber(arguments[0], START_INDEX_DEFAULT, false);\n }\n buffer.reset(startIndex);\n persistDatasourceIndex(datasource, 'minIndex');\n persistDatasourceIndex(datasource, 'maxIndex');\n doAdjust();\n }\n\n function isElementVisible(wrapper) {\n return wrapper.element.height() && wrapper.element[0].offsetParent;\n }\n\n function visibilityWatcher(wrapper) {\n if (isElementVisible(wrapper)) {\n buffer.forEach((item) => {\n if (typeof item.unregisterVisibilityWatcher === 'function') {\n item.unregisterVisibilityWatcher();\n delete item.unregisterVisibilityWatcher;\n }\n });\n if (!pending.length) {\n $timeout(() => doAdjust());\n }\n }\n }\n\n function insertWrapperContent(wrapper, insertAfter) {\n createElement(wrapper, insertAfter, viewport.insertElement);\n if (!isElementVisible(wrapper)) {\n wrapper.unregisterVisibilityWatcher = wrapper.scope.$watch(() => visibilityWatcher(wrapper));\n }\n elementRoutines.hideElement(wrapper); // hide inserted elements before data binding\n }\n\n function createElement(wrapper, insertAfter, insertElement) {\n let promises = null;\n const sibling = (insertAfter > 0) ? buffer[insertAfter - 1].element : undefined;\n linker((clone, scope) => {\n promises = insertElement(clone, sibling);\n wrapper.element = clone;\n wrapper.scope = scope;\n scope[itemName] = wrapper.item;\n });\n // ui-scroll-grid apply\n if (adapter.transform) {\n const tdInitializer = wrapper.scope.uiScrollTdInitializer;\n if (tdInitializer && tdInitializer.linking) {\n adapter.transform(wrapper.scope, wrapper.element);\n } else {\n wrapper.scope.uiScrollTdInitializer = {\n onLink: () => adapter.transform(wrapper.scope, wrapper.element),\n scope: wrapper.scope\n };\n }\n }\n return promises;\n }\n\n function updateDOM() {\n let promises = [];\n const toBePrepended = [];\n const toBeRemoved = [];\n const inserted = [];\n\n buffer.forEach((wrapper, i) => {\n switch (wrapper.op) {\n case 'prepend':\n toBePrepended.unshift(wrapper);\n break;\n case 'append':\n insertWrapperContent(wrapper, i);\n wrapper.op = 'none';\n inserted.push(wrapper);\n break;\n case 'insert':\n promises = promises.concat(createElement(wrapper, i, viewport.insertElementAnimated));\n wrapper.op = 'none';\n inserted.push(wrapper);\n break;\n case 'remove':\n toBeRemoved.push(wrapper);\n }\n });\n\n toBeRemoved.forEach((wrapper) => promises = promises.concat(viewport.removeItem(wrapper)));\n\n if (toBePrepended.length)\n toBePrepended.forEach((wrapper) => {\n insertWrapperContent(wrapper);\n wrapper.op = 'none';\n });\n\n buffer.forEach((item, i) => item.scope.$index = buffer.first + i);\n\n return {\n prepended: toBePrepended,\n removed: toBeRemoved,\n inserted: inserted,\n animated: promises\n };\n\n }\n\n function updatePaddings(rid, updates) {\n // schedule another doAdjust after animation completion\n if (updates.animated.length) {\n $q.all(updates.animated).then(() => {\n viewport.adjustPaddings();\n doAdjust(rid);\n });\n } else {\n viewport.adjustPaddings();\n }\n }\n\n function enqueueFetch(rid, updates) {\n if (viewport.shouldLoadBottom()) {\n if (!updates || buffer.effectiveHeight(updates.inserted) > 0) {\n // this means that at least one item appended in the last batch has height > 0\n if (pending.push(true) === 1) {\n adapter.loading(true);\n fetch(rid);\n }\n }\n } else if (viewport.shouldLoadTop()) {\n if ((!updates || buffer.effectiveHeight(updates.prepended) > 0) || pending[0]) {\n // this means that at least one item appended in the last batch has height > 0\n // pending[0] = true means that previous fetch was appending. We need to force at least one prepend\n // BTW there will always be at least 1 element in the pending array because bottom is fetched first\n if (pending.push(false) === 1) {\n adapter.loading(true);\n fetch(rid);\n }\n }\n }\n }\n\n function processUpdates() {\n const updates = updateDOM();\n\n // We need the item bindings to be processed before we can do adjustments\n !$scope.$$phase && !$rootScope.$$phase && $scope.$digest();\n\n updates.inserted.forEach(w => elementRoutines.showElement(w));\n updates.prepended.forEach(w => elementRoutines.showElement(w));\n return updates;\n }\n\n function doAdjust(rid) {\n if (!rid) { // dismiss pending requests\n pending = [];\n rid = ++ridActual;\n }\n\n const updates = processUpdates();\n\n if (isInvalid(rid)) {\n return;\n }\n\n updatePaddings(rid, updates);\n enqueueFetch(rid);\n\n if (!pending.length) {\n adapter.calculateProperties();\n }\n }\n\n function doAdjustAfterFetch(rid) {\n const updates = processUpdates();\n\n 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missing methods\r\n return angular.forEach({\r\n before(newElem) {\r\n var children, elem, i, j, parent, ref, self;\r\n self = this;\r\n elem = self[0];\r\n parent = self.parent();\r\n children = parent.contents();\r\n if (children[0] === elem) {\r\n return parent.prepend(newElem);\r\n } else {\r\n for (i = j = 1, ref = children.length - 1; 1 <= ref ? j <= ref : j >= ref; i = 1 <= ref ? ++j : --j) {\r\n if (children[i] === elem) {\r\n angular.element(children[i - 1]).after(newElem);\r\n return;\r\n }\r\n }\r\n throw new Error('invalid DOM structure ' + elem.outerHTML);\r\n }\r\n },\r\n height (value){\r\n var self;\r\n self = this;\r\n if (typeof value !== 'undefined') {\r\n if (angular.isNumber(value)) {\r\n value = value + 'px';\r\n }\r\n return css.call(self, 'height', value);\r\n } else {\r\n return getWidthHeight(this[0], 'height', 'base');\r\n }\r\n },\r\n outerHeight(option) {\r\n return getWidthHeight(this[0], 'height', option ? 'outerfull' : 'outer');\r\n },\r\n outerWidth(option) {\r\n return getWidthHeight(this[0], 'width', option ? 'outerfull' : 'outer');\r\n },\r\n\r\n /*\r\n The offset setter method is not implemented\r\n */\r\n offset(value) {\r\n let docElem, win;\r\n let self = this;\r\n let box = {\r\n top: 0,\r\n left: 0\r\n };\r\n let elem = self[0];\r\n let doc = elem && elem.ownerDocument;\r\n\r\n if (arguments.length) {\r\n if (value === undefined) {\r\n return self;\r\n }\r\n // TODO: implement setter\r\n throw new Error('offset setter method is not implemented');\r\n }\r\n\r\n if (!doc) {\r\n return;\r\n }\r\n\r\n docElem = doc.documentElement;\r\n\r\n // TODO: Make sure it's not a disconnected DOM node\r\n\r\n if (elem.getBoundingClientRect != null) {\r\n box = elem.getBoundingClientRect();\r\n }\r\n\r\n win = doc.defaultView || doc.parentWindow;\r\n\r\n return {\r\n top: box.top + (win.pageYOffset || docElem.scrollTop) - (docElem.clientTop || 0),\r\n left: box.left + (win.pageXOffset || docElem.scrollLeft) - (docElem.clientLeft || 0)\r\n };\r\n },\r\n scrollTop(value) {\r\n return scrollTo(this, 'top', value);\r\n },\r\n scrollLeft(value) {\r\n return scrollTo(this, 'left', value);\r\n }\r\n }, (value, key) => {\r\n if (!element.prototype[key]) {\r\n return element.prototype[key] = value;\r\n }\r\n });\r\n }\r\n\r\n}\r\n","const hideClassToken = 'ng-ui-scroll-hide';\r\n\r\nexport default class ElementRoutines {\r\n\r\n static addCSSRules() {\r\n const selector = '.' + hideClassToken;\r\n const rules = 'display: none';\r\n const sheet = document.styleSheets[0];\r\n let index;\r\n try {\r\n index = sheet.cssRules.length;\r\n } catch (err) {\r\n index = 0;\r\n }\r\n if('insertRule' in sheet) {\r\n sheet.insertRule(selector + '{' + rules + '}', index);\r\n }\r\n else if('addRule' in sheet) {\r\n sheet.addRule(selector, rules, index);\r\n }\r\n }\r\n\r\n constructor($injector, $q) {\r\n this.$animate = ($injector.has && $injector.has('$animate')) ? $injector.get('$animate') : null;\r\n this.isAngularVersionLessThen1_3 = angular.version.major === 1 && angular.version.minor < 3;\r\n this.$q = $q;\r\n }\r\n\r\n hideElement(wrapper) {\r\n wrapper.element.addClass(hideClassToken);\r\n }\r\n\r\n showElement(wrapper) {\r\n wrapper.element.removeClass(hideClassToken);\r\n }\r\n\r\n insertElement(newElement, previousElement) {\r\n previousElement.after(newElement);\r\n return [];\r\n }\r\n\r\n removeElement(wrapper) {\r\n wrapper.element.remove();\r\n wrapper.scope.$destroy();\r\n return [];\r\n }\r\n\r\n insertElementAnimated(newElement, previousElement) {\r\n if (!this.$animate) {\r\n return this.insertElement(newElement, previousElement);\r\n }\r\n\r\n if (this.isAngularVersionLessThen1_3) {\r\n const deferred = this.$q.defer();\r\n // no need for parent - previous element is never null\r\n this.$animate.enter(newElement, null, previousElement, () => deferred.resolve());\r\n\r\n return [deferred.promise];\r\n }\r\n\r\n // no need for parent - previous element is never null\r\n return [this.$animate.enter(newElement, null, previousElement)];\r\n }\r\n\r\n removeElementAnimated(wrapper) {\r\n if (!this.$animate) {\r\n return this.removeElement(wrapper);\r\n }\r\n\r\n if (this.isAngularVersionLessThen1_3) {\r\n const deferred = this.$q.defer();\r\n this.$animate.leave(wrapper.element, () => {\r\n wrapper.scope.$destroy();\r\n return deferred.resolve();\r\n });\r\n\r\n return [deferred.promise];\r\n }\r\n\r\n return [(this.$animate.leave(wrapper.element)).then(() => wrapper.scope.$destroy())];\r\n }\r\n}","export default function ScrollBuffer(elementRoutines, bufferSize, startIndex) {\r\n const buffer = Object.create(Array.prototype);\r\n\r\n angular.extend(buffer, {\r\n size: bufferSize,\r\n\r\n reset(startIndex) {\r\n buffer.remove(0, buffer.length);\r\n buffer.eof = false;\r\n buffer.bof = false;\r\n buffer.first = startIndex;\r\n buffer.next = startIndex;\r\n buffer.minIndex = startIndex;\r\n buffer.maxIndex = startIndex;\r\n buffer.minIndexUser = null;\r\n buffer.maxIndexUser = null;\r\n },\r\n\r\n append(items) {\r\n items.forEach((item) => {\r\n ++buffer.next;\r\n buffer.insert('append', item);\r\n });\r\n buffer.maxIndex = buffer.eof ? buffer.next - 1 : Math.max(buffer.next - 1, buffer.maxIndex);\r\n },\r\n\r\n prepend(items) {\r\n items.reverse().forEach((item) => {\r\n --buffer.first;\r\n buffer.insert('prepend', item);\r\n });\r\n buffer.minIndex = buffer.bof ? buffer.minIndex = buffer.first : Math.min(buffer.first, buffer.minIndex);\r\n },\r\n\r\n /**\r\n * inserts wrapped element in the buffer\r\n * the first argument is either operation keyword (see below) or a number for operation 'insert'\r\n * for insert the number is the index for the buffer element the new one have to be inserted after\r\n * operations: 'append', 'prepend', 'insert', 'remove', 'update', 'none'\r\n */\r\n insert(operation, item, isTop) {\r\n const wrapper = {\r\n item: item\r\n };\r\n\r\n if (operation % 1 === 0) {// it is an insert\r\n wrapper.op = 'insert';\r\n buffer.splice(operation, 0, wrapper);\r\n if(isTop) {\r\n buffer.first--;\r\n }\r\n else {\r\n buffer.next++;\r\n }\r\n } else {\r\n wrapper.op = operation;\r\n switch (operation) {\r\n case 'append':\r\n buffer.push(wrapper);\r\n break;\r\n case 'prepend':\r\n buffer.unshift(wrapper);\r\n break;\r\n }\r\n }\r\n },\r\n\r\n // removes elements from buffer\r\n remove(arg1, arg2) {\r\n if (angular.isNumber(arg1)) {\r\n // removes items from arg1 (including) through arg2 (excluding)\r\n for (let i = arg1; i < arg2; i++) {\r\n elementRoutines.removeElement(buffer[i]);\r\n }\r\n return buffer.splice(arg1, arg2 - arg1);\r\n }\r\n // removes single item(wrapper) from the buffer\r\n buffer.splice(buffer.indexOf(arg1), 1);\r\n if(arg1._op === 'isTop' && buffer.first === this.getAbsMinIndex()) {\r\n this.incrementMinIndex();\r\n }\r\n else {\r\n this.decrementMaxIndex();\r\n }\r\n if(arg1._op === 'isTop') {\r\n buffer.first++;\r\n }\r\n else {\r\n buffer.next--;\r\n }\r\n if(!buffer.length) {\r\n buffer.first = 1;\r\n buffer.next = 1;\r\n }\r\n\r\n return elementRoutines.removeElementAnimated(arg1);\r\n },\r\n\r\n incrementMinIndex() {\r\n if(buffer.minIndexUser !== null) {\r\n if(buffer.minIndex > buffer.minIndexUser) {\r\n buffer.minIndexUser++;\r\n return;\r\n }\r\n if(buffer.minIndex === buffer.minIndexUser) {\r\n buffer.minIndexUser++;\r\n }\r\n }\r\n buffer.minIndex++;\r\n },\r\n\r\n decrementMaxIndex() {\r\n if(buffer.maxIndexUser !== null && buffer.maxIndex <= buffer.maxIndexUser) {\r\n buffer.maxIndexUser--;\r\n }\r\n buffer.maxIndex--;\r\n },\r\n\r\n getAbsMinIndex() {\r\n if(buffer.minIndexUser !== null) {\r\n return Math.min(buffer.minIndexUser, buffer.minIndex);\r\n }\r\n return buffer.minIndex;\r\n },\r\n\r\n getAbsMaxIndex() {\r\n if(buffer.maxIndexUser !== null) {\r\n return Math.max(buffer.maxIndexUser, buffer.maxIndex);\r\n }\r\n return buffer.maxIndex;\r\n },\r\n\r\n effectiveHeight(elements) {\r\n if (!elements.length) {\r\n return 0;\r\n }\r\n let top = Number.MAX_VALUE;\r\n let bottom = Number.NEGATIVE_INFINITY;\r\n elements.forEach((wrapper) => {\r\n if (wrapper.element[0].offsetParent) {\r\n // element style is not display:none\r\n top = Math.min(top, wrapper.element.offset().top);\r\n bottom = Math.max(bottom, wrapper.element.offset().top + wrapper.element.outerHeight(true));\r\n }\r\n });\r\n return Math.max(0, bottom - top);\r\n }\r\n\r\n });\r\n\r\n buffer.reset(startIndex);\r\n\r\n return buffer;\r\n}\r\n","// Can't just extend the Array, due to Babel does not support built-in classes extending\r\n// This solution was taken from https://stackoverflow.com/questions/46897414/es6-class-extends-array-workaround-for-es5-babel-transpile\r\nclass CacheProto {\r\n add(item) {\r\n for (let i = this.length - 1; i >= 0; i--) {\r\n if (this[i].index === item.scope.$index) {\r\n this[i].height = this.rowHeight || item.element.outerHeight();\r\n return;\r\n }\r\n }\r\n this.push({\r\n index: item.scope.$index,\r\n height: this.rowHeight || item.element.outerHeight()\r\n });\r\n this.sort((a, b) => ((a.index < b.index) ? -1 : ((a.index > b.index) ? 1 : 0)));\r\n }\r\n\r\n remove(argument, _isTop) {\r\n const index = argument % 1 === 0 ? argument : argument.scope.$index;\r\n const isTop = argument % 1 === 0 ? _isTop : argument._op === 'isTop';\r\n for (let i = this.length - 1; i >= 0; i--) {\r\n if (this[i].index === index) {\r\n this.splice(i, 1);\r\n break;\r\n }\r\n }\r\n if(!isTop) {\r\n for (let i = this.length - 1; i >= 0; i--) {\r\n if (this[i].index > index) {\r\n this[i].index--;\r\n }\r\n }\r\n }\r\n }\r\n\r\n clear() {\r\n this.length = 0;\r\n }\r\n}\r\n\r\nfunction Cache() {\r\n const instance = [];\r\n instance.push.apply(instance, arguments);\r\n Object.setPrototypeOf(instance, Cache.prototype);\r\n return instance;\r\n}\r\nCache.prototype = Object.create(Array.prototype);\r\nObject.getOwnPropertyNames(CacheProto.prototype).forEach(methodName =>\r\n Cache.prototype[methodName] = CacheProto.prototype[methodName]\r\n);\r\n\r\nfunction generateElement(template) {\r\n if(template.nodeType !== Node.ELEMENT_NODE) {\r\n throw new Error('ui-scroll directive requires an Element node for templating the view');\r\n }\r\n let element;\r\n switch (template.tagName.toLowerCase()) {\r\n case 'dl':\r\n throw new Error(`ui-scroll directive does not support <${template.tagName}> as a repeating tag: ${template.outerHTML}`);\r\n case 'tr':\r\n let table = angular.element('
    ');\r\n element = table.find('tr');\r\n break;\r\n case 'li':\r\n element = angular.element('
  • ');\r\n break;\r\n default:\r\n element = angular.element('
    ');\r\n }\r\n return element;\r\n}\r\n\r\nclass Padding {\r\n constructor(template,rowHeight) {\r\n this.element = generateElement(template);\r\n this.cache = new Cache();\r\n this.cache.rowHeight = rowHeight;\r\n }\r\n\r\n height() {\r\n // When called wit a parameter, this sets the height of the padding\r\n return this.element.height.apply(this.element, arguments);\r\n }\r\n}\r\n\r\nexport default Padding;","import Padding from './padding';\r\n\r\nexport default function Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding, rowHeight) {\r\n let topPadding = null;\r\n let bottomPadding = null;\r\n const viewport = viewportController && viewportController.viewport ? viewportController.viewport : angular.element(window);\r\n const container = viewportController && viewportController.container ? viewportController.container : undefined;\r\n const scope = viewportController && viewportController.scope ? viewportController.scope : $rootScope;\r\n\r\n viewport.css({\r\n 'overflow-anchor': 'none',\r\n 'overflow-y': 'auto',\r\n 'display': 'block'\r\n });\r\n\r\n function bufferPadding() {\r\n return viewport.outerHeight() * padding; // some extra space to initiate preload\r\n }\r\n\r\n angular.extend(viewport, {\r\n getScope() {\r\n return scope;\r\n },\r\n\r\n createPaddingElements(template) {\r\n topPadding = new Padding(template,rowHeight);\r\n bottomPadding = new Padding(template,rowHeight);\r\n element.before(topPadding.element);\r\n element.after(bottomPadding.element);\r\n topPadding.height(0);\r\n bottomPadding.height(0);\r\n },\r\n\r\n applyContainerStyle() {\r\n if (!container) {\r\n return true;\r\n }\r\n if(container !== viewport) {\r\n viewport.css('height', window.getComputedStyle(container[0]).height);\r\n }\r\n return viewport.height() > 0;\r\n },\r\n\r\n bottomDataPos() {\r\n let scrollHeight = viewport[0].scrollHeight;\r\n scrollHeight = scrollHeight != null ? scrollHeight : viewport[0].document.documentElement.scrollHeight;\r\n return scrollHeight - bottomPadding.height();\r\n },\r\n\r\n topDataPos() {\r\n return topPadding.height();\r\n },\r\n\r\n bottomVisiblePos() {\r\n return viewport.scrollTop() + viewport.outerHeight();\r\n },\r\n\r\n topVisiblePos() {\r\n return viewport.scrollTop();\r\n },\r\n\r\n insertElement(e, sibling) {\r\n return elementRoutines.insertElement(e, sibling || topPadding.element);\r\n },\r\n\r\n insertElementAnimated(e, sibling) {\r\n return elementRoutines.insertElementAnimated(e, sibling || topPadding.element);\r\n },\r\n\r\n shouldLoadBottom() {\r\n return !buffer.eof && viewport.bottomDataPos() < viewport.bottomVisiblePos() + bufferPadding();\r\n },\r\n\r\n clipBottom() {\r\n // clip the invisible items off the bottom\r\n let overage = 0;\r\n let overageHeight = 0;\r\n let itemHeight = 0;\r\n let emptySpaceHeight = viewport.bottomDataPos() - viewport.bottomVisiblePos() - bufferPadding();\r\n\r\n // Simple calculation now using the fixed rowHeight if available.\r\n // Might be optimized if needed\r\n for (let i = buffer.length - 1; i >= 0; i--) {\r\n itemHeight = rowHeight ? rowHeight : buffer[i].element.outerHeight(true);\r\n if (overageHeight + itemHeight > emptySpaceHeight) {\r\n break;\r\n }\r\n bottomPadding.cache.add(buffer[i]);\r\n overageHeight += itemHeight;\r\n overage++;\r\n }\r\n\r\n if (overage > 0) {\r\n buffer.eof = false;\r\n buffer.remove(buffer.length - overage, buffer.length);\r\n buffer.next -= overage;\r\n viewport.adjustPaddings();\r\n }\r\n },\r\n\r\n shouldLoadTop() {\r\n return !buffer.bof && (viewport.topDataPos() > viewport.topVisiblePos() - bufferPadding());\r\n },\r\n\r\n clipTop() {\r\n // clip the invisible items off the top\r\n let overage = 0;\r\n let overageHeight = 0;\r\n let itemHeight = 0;\r\n let emptySpaceHeight = viewport.topVisiblePos() - viewport.topDataPos() - bufferPadding();\r\n\r\n // Simple calculation now using the fixed rowHeight if available.\r\n // Might be optimized if needed\r\n for (let i = 0; i < buffer.length; i++) {\r\n itemHeight = rowHeight ? rowHeight : buffer[i].element.outerHeight(true);\r\n if (overageHeight + itemHeight > emptySpaceHeight) {\r\n break;\r\n }\r\n topPadding.cache.add(buffer[i]);\r\n overageHeight += itemHeight;\r\n overage++;\r\n }\r\n\r\n if (overage > 0) {\r\n // we need to adjust top padding element before items are removed from top\r\n // to avoid strange behaviour of scroll bar during remove top items when we are at the very bottom\r\n topPadding.height(topPadding.height() + overageHeight);\r\n buffer.bof = false;\r\n buffer.remove(0, overage);\r\n buffer.first += overage;\r\n }\r\n },\r\n\r\n adjustPaddings() {\r\n if (!buffer.length) {\r\n return;\r\n }\r\n\r\n // precise heights calculation based on items that are in buffer or that were in buffer once\r\n // outerHeight(true) == [height+ padding + border + margin]\r\n // The calculation bellow can certainly be replaced by:\r\n // const visibleItemsHeight = rowHeight ? rowHeight * buffer.length\r\n // : buffer.reduce((summ, item) => summ + item.element.outerHeight(true), 0);\r\n const visibleItemsHeight = buffer.reduce((summ, item) => summ + (rowHeight ? rowHeight : item.element.outerHeight(true)), 0);\r\n\r\n // Sinlarly, the calculation of the paddings (top & bottom) can certanly be optimizez\r\n let topPaddingHeight = 0, topCount = 0;\r\n topPadding.cache.forEach(item => {\r\n if(item.index < buffer.first) {\r\n topPaddingHeight += item.height; // outerHeight(true) is actually stored in this data member\r\n topCount++;\r\n }\r\n });\r\n\r\n let bottomPaddingHeight = 0, bottomCount = 0;\r\n bottomPadding.cache.forEach(item => {\r\n if(item.index >= buffer.next) {\r\n bottomPaddingHeight += item.height; // outerHeight(true) is actually stored in this data member\r\n bottomCount++;\r\n }\r\n });\r\n\r\n const totalHeight = visibleItemsHeight + topPaddingHeight + bottomPaddingHeight;\r\n const averageItemHeight = totalHeight / (topCount + bottomCount + buffer.length);\r\n\r\n // average heights calculation, items that have never been reached\r\n let adjustTopPadding = buffer.minIndexUser !== null && buffer.minIndex > buffer.minIndexUser;\r\n let adjustBottomPadding = buffer.maxIndexUser !== null && buffer.maxIndex < buffer.maxIndexUser;\r\n let topPaddingHeightAdd = adjustTopPadding ? (buffer.minIndex - buffer.minIndexUser) * averageItemHeight : 0;\r\n let bottomPaddingHeightAdd = adjustBottomPadding ? (buffer.maxIndexUser - buffer.maxIndex) * averageItemHeight : 0;\r\n\r\n // paddings combine adjustment\r\n topPadding.height(topPaddingHeight + topPaddingHeightAdd);\r\n bottomPadding.height(bottomPaddingHeight + bottomPaddingHeightAdd);\r\n },\r\n\r\n onAfterMinIndexSet(topPaddingHeightOld) {\r\n // additional scrollTop adjustment in case of datasource.minIndex external set\r\n if (buffer.minIndexUser !== null && buffer.minIndex > buffer.minIndexUser) {\r\n let diff = topPadding.height() - topPaddingHeightOld;\r\n viewport.scrollTop(viewport.scrollTop() + diff);\r\n while((diff -= viewport.scrollTop()) > 0) {\r\n bottomPadding.height(bottomPadding.height() + diff);\r\n viewport.scrollTop(viewport.scrollTop() + diff);\r\n }\r\n }\r\n },\r\n\r\n onAfterPrepend(updates) {\r\n if (!updates.prepended.length)\r\n return;\r\n const height = buffer.effectiveHeight(updates.prepended);\r\n const paddingHeight = topPadding.height() - height;\r\n if (paddingHeight >= 0) {\r\n topPadding.height(paddingHeight);\r\n }\r\n else {\r\n topPadding.height(0);\r\n viewport.scrollTop(viewport.scrollTop() - paddingHeight);\r\n }\r\n },\r\n\r\n resetTopPadding() {\r\n topPadding.height(0);\r\n topPadding.cache.clear();\r\n },\r\n\r\n resetBottomPadding() {\r\n bottomPadding.height(0);\r\n bottomPadding.cache.clear();\r\n },\r\n\r\n removeCacheItem(item, isTop) {\r\n topPadding.cache.remove(item, isTop);\r\n bottomPadding.cache.remove(item, isTop);\r\n },\r\n\r\n removeItem(item) {\r\n this.removeCacheItem(item);\r\n return buffer.remove(item);\r\n }\r\n });\r\n\r\n return viewport;\r\n}\r\n","class Adapter {\r\n\r\n constructor($scope, $parse, $attr, viewport, buffer, doAdjust, reload) {\r\n this.$parse = $parse;\r\n this.$attr = $attr;\r\n this.viewport = viewport;\r\n this.buffer = buffer;\r\n\r\n this.doAdjust = doAdjust;\r\n this.reload = reload;\r\n\r\n this.isLoading = false;\r\n this.disabled = false;\r\n\r\n const viewportScope = viewport.getScope();\r\n this.startScope = viewportScope.$parent ? viewportScope : $scope;\r\n\r\n this.publicContext = {};\r\n this.assignAdapter($attr.adapter);\r\n this.generatePublicContext();\r\n }\r\n\r\n assignAdapter(adapterAttr) {\r\n if (!adapterAttr || !(adapterAttr = adapterAttr.replace(/^\\s+|\\s+$/gm, ''))) {\r\n return;\r\n }\r\n let adapterOnScope;\r\n\r\n try {\r\n this.$parse(adapterAttr).assign(this.startScope, {});\r\n adapterOnScope = this.$parse(adapterAttr)(this.startScope);\r\n }\r\n catch (error) {\r\n error.message = `Angular ui-scroll Adapter assignment exception.\\n` +\r\n `Can't parse \"${adapterAttr}\" expression.\\n` +\r\n error.message;\r\n throw error;\r\n }\r\n\r\n angular.extend(adapterOnScope, this.publicContext);\r\n this.publicContext = adapterOnScope;\r\n }\r\n\r\n generatePublicContext() {\r\n // these methods will be accessible out of ui-scroll via user defined adapter\r\n const publicMethods = ['reload', 'applyUpdates', 'append', 'prepend', 'isBOF', 'isEOF', 'isEmpty'];\r\n for (let i = publicMethods.length - 1; i >= 0; i--) {\r\n this.publicContext[publicMethods[i]] = this[publicMethods[i]].bind(this);\r\n }\r\n\r\n // these read-only props will be accessible out of ui-scroll via user defined adapter\r\n const publicProps = ['isLoading', 'topVisible', 'topVisibleElement', 'topVisibleScope', 'bottomVisible', 'bottomVisibleElement', 'bottomVisibleScope'];\r\n for (let i = publicProps.length - 1; i >= 0; i--) {\r\n let property, attr = this.$attr[publicProps[i]];\r\n Object.defineProperty(this, publicProps[i], {\r\n get: () => property,\r\n set: (value) => {\r\n property = value;\r\n this.publicContext[publicProps[i]] = value;\r\n if (attr) {\r\n this.$parse(attr).assign(this.startScope, value);\r\n }\r\n }\r\n });\r\n }\r\n\r\n // non-read-only public property\r\n Object.defineProperty(this.publicContext, 'disabled', {\r\n get: () => this.disabled,\r\n set: (value) => (!(this.disabled = value)) ? this.doAdjust() : null\r\n });\r\n }\r\n\r\n loading(value) {\r\n this.isLoading = value;\r\n }\r\n\r\n isBOF() {\r\n return this.buffer.bof;\r\n }\r\n\r\n isEOF() {\r\n return this.buffer.eof;\r\n }\r\n\r\n isEmpty() {\r\n return !this.buffer.length;\r\n }\r\n\r\n append(newItems) {\r\n this.buffer.append(newItems);\r\n this.doAdjust();\r\n this.viewport.clipTop();\r\n this.viewport.clipBottom();\r\n }\r\n\r\n prepend(newItems) {\r\n this.buffer.prepend(newItems);\r\n this.doAdjust();\r\n this.viewport.clipTop();\r\n this.viewport.clipBottom();\r\n }\r\n\r\n applyUpdates(arg1, arg2) {\r\n if (typeof arg1 === 'function') {\r\n this.applyUpdatesFunc(arg1);\r\n } else {\r\n this.applyUpdatesIndex(arg1, arg2);\r\n }\r\n this.doAdjust();\r\n }\r\n\r\n applyUpdatesFunc(cb) {\r\n this.buffer.slice(0).forEach((wrapper) => {\r\n // we need to do it on the buffer clone, because buffer content\r\n // may change as we iterate through\r\n this.applyUpdate(wrapper, cb(wrapper.item, wrapper.scope, wrapper.element));\r\n });\r\n }\r\n\r\n applyUpdatesIndex(index, newItems) {\r\n if (index % 1 !== 0) {\r\n throw new Error('applyUpdates - ' + index + ' is not a valid index (should be an integer)');\r\n }\r\n const _index = index - this.buffer.first;\r\n\r\n // apply updates only within buffer\r\n if (_index >= 0 && _index < this.buffer.length) {\r\n this.applyUpdate(this.buffer[_index], newItems);\r\n }\r\n // out-of-buffer case: deletion may affect Paddings\r\n else if(index >= this.buffer.getAbsMinIndex() && index <= this.buffer.getAbsMaxIndex()) {\r\n if(angular.isArray(newItems) && !newItems.length) {\r\n this.viewport.removeCacheItem(index, index === this.buffer.minIndex);\r\n if(index === this.buffer.getAbsMinIndex()) {\r\n this.buffer.incrementMinIndex();\r\n }\r\n else {\r\n this.buffer.decrementMaxIndex();\r\n }\r\n }\r\n }\r\n }\r\n\r\n applyUpdate(wrapper, newItems) {\r\n if (!angular.isArray(newItems)) {\r\n return;\r\n }\r\n let position = this.buffer.indexOf(wrapper);\r\n if (!newItems.reverse().some(newItem => newItem === wrapper.item)) {\r\n wrapper.op = 'remove';\r\n if(position === 0 && !newItems.length) {\r\n wrapper._op = 'isTop'; // to catch \"first\" edge case on remove\r\n }\r\n }\r\n newItems.forEach((newItem) => {\r\n if (newItem === wrapper.item) {\r\n position--;\r\n } else {\r\n // 3 parameter (isTop) is to catch \"first\" edge case on insert\r\n this.buffer.insert(position + 1, newItem, position === -1);\r\n }\r\n });\r\n }\r\n\r\n calculateProperties() {\r\n let rowTop = null, topHeight = 0;\r\n let topDone = false, bottomDone = false;\r\n const length = this.buffer.length;\r\n\r\n for (let i = 0; i < length; i++) {\r\n const item = this.buffer[i];\r\n const itemTop = item.element.offset().top;\r\n\r\n if (rowTop !== itemTop) { // a new row condition\r\n const itemHeight = item.element.outerHeight(true);\r\n const top = this.viewport.topDataPos() + topHeight + itemHeight;\r\n\r\n if (!topDone && top > this.viewport.topVisiblePos()) {\r\n topDone = true;\r\n this['topVisible'] = item.item;\r\n this['topVisibleElement'] = item.element;\r\n this['topVisibleScope'] = item.scope;\r\n }\r\n if (!bottomDone && (top >= this.viewport.bottomVisiblePos() || (i === length - 1 && this.isEOF()))) {\r\n bottomDone = true;\r\n this['bottomVisible'] = item.item;\r\n this['bottomVisibleElement'] = item.element;\r\n this['bottomVisibleScope'] = item.scope;\r\n }\r\n topHeight += itemHeight;\r\n }\r\n rowTop = itemTop;\r\n\r\n if (topDone && bottomDone) {\r\n break;\r\n }\r\n }\r\n }\r\n\r\n}\r\n\r\nexport default Adapter;\r\n","import JQLiteExtras from './modules/jqLiteExtras';\nimport ElementRoutines from './modules/elementRoutines.js';\nimport ScrollBuffer from './modules/buffer.js';\nimport Viewport from './modules/viewport.js';\nimport Adapter from './modules/adapter.js';\n\nangular.module('ui.scroll', [])\n\n .constant('JQLiteExtras', JQLiteExtras)\n .run(['JQLiteExtras', (JQLiteExtras) => {\n !window.jQuery ? (new JQLiteExtras()).registerFor(angular.element) : null;\n ElementRoutines.addCSSRules();\n }])\n\n .directive('uiScrollViewport', function () {\n return {\n restrict: 'A',\n controller: [\n '$scope',\n '$element',\n function (scope, element) {\n this.container = element;\n this.viewport = element;\n this.scope = scope;\n\n angular.forEach(element.children(), child => {\n if (child.tagName.toLowerCase() === 'tbody') {\n this.viewport = angular.element(child);\n }\n });\n\n return this;\n }\n ]\n };\n })\n\n .directive('uiScroll', [\n '$log',\n '$injector',\n '$rootScope',\n '$timeout',\n '$interval',\n '$q',\n '$parse',\n function (console, $injector, $rootScope, $timeout, $interval, $q, $parse) {\n\n return {\n require: ['?^uiScrollViewport'],\n restrict: 'A',\n transclude: 'element',\n priority: 1000,\n terminal: true,\n link: link\n };\n\n function link($scope, element, $attr, controllers, linker) {\n const match = $attr.uiScroll.match(/^\\s*(\\w+)\\s+in\\s+([(\\w|\\$)\\.]+)\\s*$/);\n if (!match) {\n throw new Error('Expected uiScroll in form of \\'_item_ in _datasource_\\' but got \\'' + $attr.uiScroll + '\\'');\n }\n\n function parseNumber(value, defaultValue, isFloat) {\n if (!isFloat) {\n value = value === null ? defaultValue : Math.floor(value);\n }\n return isNaN(value) ? defaultValue : value;\n }\n\n function parseNumericAttr(value, defaultValue, isFloat) {\n const result = $parse(value)($scope);\n return parseNumber(result, defaultValue, isFloat);\n }\n\n const BUFFER_MIN = 3; // Minimum size of the data source request\n const BUFFER_DEFAULT = 10; // Default datasource request size\n const PADDING_MIN = 0.3; // Mininum # of rows in the padding area\n const PADDING_DEFAULT = 0.5; // Default # of rows in the padding area\n const START_INDEX_DEFAULT = 1; // Default start index when requestng the first data block\n const MAX_VIEWPORT_DELAY = 500; // Max time wait (ms) to get the viewport with an height>0\n const VIEWPORT_POLLING_INTERVAL = 50; // Interval used to check the initial viewport height\n\n let datasource = null;\n const itemName = match[1]; // Name of the index variable to publish\n const datasourceName = match[2]; // Name of the datasource to request the rows from\n const viewportController = controllers[0]; // ViewportController, as specified in the require option (http://websystique.com/angularjs/angularjs-custom-directives-controllers-require-option-guide/)\n const bufferSize = Math.max(BUFFER_MIN, parseNumericAttr($attr.bufferSize, BUFFER_DEFAULT)); \n const padding = Math.max(PADDING_MIN, parseNumericAttr($attr.padding, PADDING_DEFAULT, true));\n let startIndex = parseNumericAttr($attr.startIndex, START_INDEX_DEFAULT);\n\n // PHIL: Provide a fixed row height\n // \n const rowHeight = parseNumericAttr($attr.rowheight,null,false);\n\n // Revision IDs\n // \n let ridActual = 0; // current data revision id\n let pending = [];\n\n const elementRoutines = new ElementRoutines($injector, $q);\n const buffer = new ScrollBuffer(elementRoutines, bufferSize, startIndex);\n const viewport = new Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding, rowHeight);\n const adapter = new Adapter($scope, $parse, $attr, viewport, buffer, doAdjust, reload);\n\n if (viewportController) {\n viewportController.adapter = adapter;\n }\n\n const isDatasourceValid = () =>\n Object.prototype.toString.call(datasource) === '[object Object]' && typeof datasource.get === 'function';\n\n datasource = $parse(datasourceName)($scope); // try to get datasource on scope\n if (!isDatasourceValid()) {\n datasource = $injector.get(datasourceName); // try to inject datasource as service\n if (!isDatasourceValid()) {\n throw new Error(datasourceName + ' is not a valid datasource');\n }\n }\n\n let onRenderHandlers = [];\n function onRenderHandlersRunner() {\n onRenderHandlers.forEach(handler => handler.run());\n onRenderHandlers = [];\n }\n function persistDatasourceIndex(datasource, propName) {\n let getter;\n // need to postpone min/maxIndexUser processing if the view is empty\n if(angular.isNumber(datasource[propName])) {\n getter = datasource[propName];\n if(angular.isNumber(getter)) {\n onRenderHandlers = onRenderHandlers.filter(handler => handler.id !== propName);\n onRenderHandlers.push({\n id: propName,\n run: () => datasource[propName] = getter\n });\n }\n }\n }\n\n function defineDatasourceIndex(datasource, propName, propUserName) {\n const descriptor = Object.getOwnPropertyDescriptor(datasource, propName);\n if (descriptor && (descriptor.set || descriptor.get)) {\n return;\n }\n let getter;\n persistDatasourceIndex(datasource, propName);\n Object.defineProperty(datasource, propName, {\n set: (value) => {\n getter = value;\n if(pending.length && !buffer.length) {\n persistDatasourceIndex(datasource, propName);\n return;\n }\n buffer[propUserName] = value;\n const topPaddingHeightOld = viewport.topDataPos();\n viewport.adjustPaddings();\n if (propName === 'minIndex') {\n viewport.onAfterMinIndexSet(topPaddingHeightOld);\n }\n },\n get: () => getter\n });\n }\n\n defineDatasourceIndex(datasource, 'minIndex', 'minIndexUser');\n defineDatasourceIndex(datasource, 'maxIndex', 'maxIndexUser');\n\n const fetchNext = (datasource.get.length !== 2) ?\n (success) => datasource.get(buffer.next, bufferSize, success) :\n (success) => {\n datasource.get({\n index: buffer.next,\n append: buffer.length ? buffer[buffer.length - 1].item : void 0,\n count: bufferSize\n }, success);\n };\n\n const fetchPrevious = (datasource.get.length !== 2) ?\n (success) => datasource.get(buffer.first - bufferSize, bufferSize, success) :\n (success) => {\n datasource.get({\n index: buffer.first - bufferSize,\n prepend: buffer.length ? buffer[0].item : void 0,\n count: bufferSize\n }, success);\n };\n\n const initialize = () => {\n let tryCount = 0;\n if(!viewport.applyContainerStyle()) {\n const timer = $interval(() => {\n tryCount++;\n if(viewport.applyContainerStyle()) {\n $interval.cancel(timer);\n doAdjust();\n }\n if(tryCount * VIEWPORT_POLLING_INTERVAL >= MAX_VIEWPORT_DELAY) {\n $interval.cancel(timer);\n throw Error(`ui-scroll directive requires a viewport with non-zero height in ${MAX_VIEWPORT_DELAY}ms`);\n }\n }, VIEWPORT_POLLING_INTERVAL);\n }\n else {\n doAdjust();\n }\n };\n\n /**\n * Build padding elements\n *\n * Calling linker is the only way I found to get access to the tag name of the template\n * to prevent the directive scope from pollution a new scope is created and destroyed\n * right after the builder creation is completed\n */\n linker((clone, scope) => {\n viewport.createPaddingElements(clone[0]);\n // we do not include the clone in the DOM. It means that the nested directives will not\n // be able to reach the parent directives, but in this case it is intentional because we\n // created the clone to access the template tag name\n scope.$destroy();\n clone.remove();\n });\n\n $scope.$on('$destroy', () => {\n unbindEvents();\n viewport.unbind('mousewheel', wheelHandler);\n });\n\n viewport.bind('mousewheel', wheelHandler);\n\n initialize();\n\n /* Private function definitions */\n\n function isInvalid(rid) {\n return (rid && rid !== ridActual) || $scope.$$destroyed;\n }\n\n function bindEvents() {\n viewport.bind('resize', resizeAndScrollHandler);\n viewport.bind('scroll', resizeAndScrollHandler);\n }\n\n function unbindEvents() {\n viewport.unbind('resize', resizeAndScrollHandler);\n viewport.unbind('scroll', resizeAndScrollHandler);\n }\n\n function reload() {\n viewport.resetTopPadding();\n viewport.resetBottomPadding();\n if (arguments.length) {\n startIndex = parseNumber(arguments[0], START_INDEX_DEFAULT, false);\n }\n buffer.reset(startIndex);\n persistDatasourceIndex(datasource, 'minIndex');\n persistDatasourceIndex(datasource, 'maxIndex');\n doAdjust();\n }\n\n function isElementVisible(wrapper) {\n if(rowHeight) {\n return true;\n }\n return wrapper.element.height() && wrapper.element[0].offsetParent;\n }\n\n function visibilityWatcher(wrapper) {\n if (isElementVisible(wrapper)) {\n buffer.forEach((item) => {\n if (typeof item.unregisterVisibilityWatcher === 'function') {\n item.unregisterVisibilityWatcher();\n delete item.unregisterVisibilityWatcher;\n }\n });\n if (!pending.length) {\n $timeout(() => doAdjust());\n }\n }\n }\n\n function insertWrapperContent(wrapper, insertAfter) {\n createElement(wrapper, insertAfter, viewport.insertElement);\n if (!isElementVisible(wrapper)) {\n wrapper.unregisterVisibilityWatcher = wrapper.scope.$watch(() => visibilityWatcher(wrapper));\n }\n elementRoutines.hideElement(wrapper); // hide inserted elements before data binding\n }\n\n function createElement(wrapper, insertAfter, insertElement) {\n let promises = null;\n const sibling = (insertAfter > 0) ? buffer[insertAfter - 1].element : undefined;\n linker((clone, scope) => {\n promises = insertElement(clone, sibling);\n wrapper.element = clone;\n wrapper.scope = scope;\n scope[itemName] = wrapper.item;\n });\n // ui-scroll-grid apply\n if (adapter.transform) {\n const tdInitializer = wrapper.scope.uiScrollTdInitializer;\n if (tdInitializer && tdInitializer.linking) {\n adapter.transform(wrapper.scope, wrapper.element);\n } else {\n wrapper.scope.uiScrollTdInitializer = {\n onLink: () => adapter.transform(wrapper.scope, wrapper.element),\n scope: wrapper.scope\n };\n }\n }\n return promises;\n }\n\n function updateDOM() {\n let promises = [];\n const toBePrepended = [];\n const toBeRemoved = [];\n const inserted = [];\n\n buffer.forEach((wrapper, i) => {\n switch (wrapper.op) {\n case 'prepend':\n toBePrepended.unshift(wrapper);\n break;\n case 'append':\n insertWrapperContent(wrapper, i);\n wrapper.op = 'none';\n inserted.push(wrapper);\n break;\n case 'insert':\n promises = promises.concat(createElement(wrapper, i, viewport.insertElementAnimated));\n wrapper.op = 'none';\n inserted.push(wrapper);\n break;\n case 'remove':\n toBeRemoved.push(wrapper);\n }\n });\n\n toBeRemoved.forEach((wrapper) => promises = promises.concat(viewport.removeItem(wrapper)));\n\n if (toBePrepended.length)\n toBePrepended.forEach((wrapper) => {\n insertWrapperContent(wrapper);\n wrapper.op = 'none';\n });\n\n buffer.forEach((item, i) => item.scope.$index = buffer.first + i);\n\n return {\n prepended: toBePrepended,\n removed: toBeRemoved,\n inserted: inserted,\n animated: promises\n };\n\n }\n\n // Adjust the viewport paddings\n // \n function updatePaddings(rid, updates) {\n // schedule another doAdjust after animation completion\n if (updates.animated.length) {\n $q.all(updates.animated).then(() => {\n viewport.adjustPaddings();\n doAdjust(rid);\n });\n } else {\n viewport.adjustPaddings();\n }\n }\n\n function enqueueFetch(rid, updates) {\n if (viewport.shouldLoadBottom()) {\n if (!updates || buffer.effectiveHeight(updates.inserted) > 0) {\n // this means that at least one item appended in the last batch has height > 0\n if (pending.push(true) === 1) {\n adapter.loading(true);\n fetch(rid);\n }\n }\n } else if (viewport.shouldLoadTop()) {\n if ((!updates || buffer.effectiveHeight(updates.prepended) > 0) || pending[0]) {\n // this means that at least one item appended in the last batch has height > 0\n // pending[0] = true means that previous fetch was appending. We need to force at least one prepend\n // BTW there will always be at least 1 element in the pending array because bottom is fetched first\n if (pending.push(false) === 1) {\n adapter.loading(true);\n fetch(rid);\n }\n }\n }\n }\n\n function processUpdates() {\n const updates = updateDOM();\n\n // We need the item bindings to be processed before we can do adjustments\n !$scope.$$phase && !$rootScope.$$phase && $scope.$digest();\n\n updates.inserted.forEach(w => elementRoutines.showElement(w));\n updates.prepended.forEach(w => elementRoutines.showElement(w));\n return updates;\n }\n\n function doAdjust(rid) {\n if (!rid) { // dismiss pending requests\n pending = [];\n rid = ++ridActual;\n }\n\n const updates = processUpdates();\n\n if (isInvalid(rid)) {\n return;\n }\n\n updatePaddings(rid, updates);\n enqueueFetch(rid);\n\n if (!pending.length) {\n adapter.calculateProperties();\n }\n }\n\n function doAdjustAfterFetch(rid) {\n const updates = processUpdates();\n\n viewport.onAfterPrepend(updates);\n\n if (isInvalid(rid)) {\n return;\n }\n\n updatePaddings(rid, updates);\n onRenderHandlersRunner();\n enqueueFetch(rid, updates);\n pending.shift();\n\n if (pending.length)\n fetch(rid);\n else {\n adapter.loading(false);\n bindEvents();\n adapter.calculateProperties();\n }\n }\n\n function fetch(rid) {\n if (pending[0]) {// scrolling down\n if (buffer.length && !viewport.shouldLoadBottom()) {\n doAdjustAfterFetch(rid);\n } else {\n fetchNext((result) => {\n if (isInvalid(rid)) {\n return;\n }\n\n if (result.length < bufferSize) {\n buffer.eof = true;\n }\n\n if (result.length > 0) {\n viewport.clipTop();\n buffer.append(result);\n }\n\n doAdjustAfterFetch(rid);\n });\n }\n } else { // scrolling up\n if (buffer.length && !viewport.shouldLoadTop()) {\n doAdjustAfterFetch(rid);\n } else {\n fetchPrevious((result) => {\n if (isInvalid(rid)) {\n return;\n }\n\n if (result.length < bufferSize) {\n buffer.bof = true;\n // log 'bof is reached'\n }\n\n if (result.length > 0) {\n if (buffer.length) {\n viewport.clipBottom();\n }\n buffer.prepend(result);\n }\n\n doAdjustAfterFetch(rid);\n });\n }\n }\n }\n\n function resizeAndScrollHandler() {\n if (!$rootScope.$$phase && !adapter.isLoading && !adapter.disabled) {\n\n enqueueFetch(ridActual);\n\n if (pending.length) {\n unbindEvents();\n } else {\n adapter.calculateProperties();\n if(!rowHeight) {\n // The digest is forced to calculate the height, which is not necessary when the height is knowm\n !$scope.$$phase && $scope.$digest();\n }\n }\n }\n }\n\n function wheelHandler(event) {\n if (!adapter.disabled) {\n const scrollTop = viewport[0].scrollTop;\n const yMax = viewport[0].scrollHeight - viewport[0].clientHeight;\n\n if ((scrollTop === 0 && !buffer.bof) || (scrollTop === yMax && !buffer.eof)) {\n event.preventDefault();\n }\n }\n }\n }\n\n }\n ]);\n"],"sourceRoot":""} \ No newline at end of file diff --git a/dist/ui-scroll.min.js b/dist/ui-scroll.min.js index b6b5d46e..7bcb7600 100644 --- a/dist/ui-scroll.min.js +++ b/dist/ui-scroll.min.js @@ -1,2 +1,2 @@ -!function(n){var r={};function i(e){if(r[e])return r[e].exports;var t=r[e]={i:e,l:!1,exports:{}};return n[e].call(t.exports,t,t.exports,i),t.l=!0,t.exports}i.m=n,i.c=r,i.d=function(e,t,n){i.o(e,t)||Object.defineProperty(e,t,{enumerable:!0,get:n})},i.r=function(e){"undefined"!=typeof Symbol&&Symbol.toStringTag&&Object.defineProperty(e,Symbol.toStringTag,{value:"Module"}),Object.defineProperty(e,"__esModule",{value:!0})},i.t=function(t,e){if(1&e&&(t=i(t)),8&e)return t;if(4&e&&"object"==typeof t&&t&&t.__esModule)return t;var n=Object.create(null);if(i.r(n),Object.defineProperty(n,"default",{enumerable:!0,value:t}),2&e&&"string"!=typeof t)for(var r in t)i.d(n,r,function(e){return t[e]}.bind(null,r));return n},i.n=function(e){var t=e&&e.__esModule?function(){return e.default}:function(){return e};return i.d(t,"a",t),t},i.o=function(e,t){return Object.prototype.hasOwnProperty.call(e,t)},i.p="",i(i.s=1)}([,function(e,t,n){"use strict";function g(e,t){return function(e){if(Array.isArray(e))return e}(e)||function(e,t){var n=[],r=!0,i=!1,o=void 0;try{for(var a,s=e[Symbol.iterator]();!(r=(a=s.next()).done)&&(n.push(a.value),!t||n.length!==t);r=!0);}catch(e){i=!0,o=e}finally{try{r||null==s.return||s.return()}finally{if(i)throw o}}return n}(e,t)||function(){throw new TypeError("Invalid attempt to destructure non-iterable instance")}()}function i(e,t){for(var n=0;ni.minIndexUser)return void i.minIndexUser++;i.minIndex===i.minIndexUser&&i.minIndexUser++}i.minIndex++},decrementMaxIndex:function(){null!==i.maxIndexUser&&i.maxIndex<=i.maxIndexUser&&i.maxIndexUser--,i.maxIndex--},getAbsMinIndex:function(){return null!==i.minIndexUser?Math.min(i.minIndexUser,i.minIndex):i.minIndex},getAbsMaxIndex:function(){return null!==i.maxIndexUser?Math.max(i.maxIndexUser,i.maxIndex):i.maxIndex},effectiveHeight:function(e){if(!e.length)return 0;var t=Number.MAX_VALUE,n=Number.NEGATIVE_INFINITY;return e.forEach(function(e){e.element[0].offsetParent&&(t=Math.min(t,e.element.offset().top),n=Math.max(n,e.element.offset().top+e.element.outerHeight(!0)))}),Math.max(0,n-t)}}),i.reset(t),i}function u(e,t){if(!(e instanceof t))throw new TypeError("Cannot call a class as a function")}function l(e,t){for(var n=0;nt.index?1:0})}},{key:"remove",value:function(e,t){for(var n=e%1==0?e:e.scope.$index,r=e%1==0?t:"isTop"===e._op,i=this.length-1;0<=i;i--)if(this[i].index===n){this.splice(i,1);break}if(!r)for(var o=this.length-1;0<=o;o--)this[o].index>n&&this[o].index--}},{key:"clear",value:function(){this.length=0}}]),e}();function d(){var e=[];return e.push.apply(e,arguments),Object.setPrototypeOf(e,d.prototype),e}d.prototype=Object.create(Array.prototype),Object.getOwnPropertyNames(f.prototype).forEach(function(e){return d.prototype[e]=f.prototype[e]});var h=function(){function t(e){u(this,t),this.element=function(e){if(e.nodeType!==Node.ELEMENT_NODE)throw new Error("ui-scroll directive requires an Element node for templating the view");var t;switch(e.tagName.toLowerCase()){case"dl":throw new Error("ui-scroll directive does not support <".concat(e.tagName,"> as a repeating tag: ").concat(e.outerHTML));case"tr":t=angular.element("
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e===t.item})||(t.op="remove",0!==r||e.length||(t._op="isTop")),e.forEach(function(e){e===t.item?r--:n.buffer.insert(r+1,e,-1===r)})}}},{key:"calculateProperties",value:function(){for(var e=null,t=0,n=!1,r=!1,i=this.buffer.length,o=0;othis.viewport.topVisiblePos()&&(n=!0,this.topVisible=a.item,this.topVisibleElement=a.element,this.topVisibleScope=a.scope),!r&&(l>=this.viewport.bottomVisiblePos()||o===i-1&&this.isEOF())&&(r=!0,this.bottomVisible=a.item,this.bottomVisibleElement=a.element,this.bottomVisibleScope=a.scope),t+=u}if(e=s,n&&r)break}}}])&&h(e.prototype,t),n&&h(e,n),u}();angular.module("ui.scroll",[]).constant("JQLiteExtras",r).run(["JQLiteExtras",function(e){!window.jQuery&&(new e).registerFor(angular.element),Q.addCSSRules()}]).directive("uiScrollViewport",function(){return{restrict:"A",controller:["$scope","$element",function(e,t){var n=this;return this.container=t,this.viewport=t,this.scope=e,angular.forEach(t.children(),function(e){"tbody"===e.tagName.toLowerCase()&&(n.viewport=angular.element(e))}),this}]}}).directive("uiScroll",["$log","$injector","$rootScope","$timeout","$interval","$q","$parse",function(e,D,F,R,W,z,q){return{require:["?^uiScrollViewport"],restrict:"A",transclude:"element",priority:1e3,terminal:!0,link:function(i,e,t,n,a){var r=t.uiScroll.match(/^\s*(\w+)\s+in\s+([(\w|\$)\.]+)\s*$/);if(!r)throw new Error("Expected uiScroll in form of '_item_ in _datasource_' but got '"+t.uiScroll+"'");function o(e,t,n){return n||(e=null===e?t:Math.floor(e)),isNaN(e)?t:e}function s(e,t,n){var r=q(e)(i);return o(r,t,n)}var u=null,l=r[1],c=r[2],f=n[0],d=Math.max(3,s(t.bufferSize,10)),h=Math.max(.3,s(t.padding,.5,!0)),p=s(t.startIndex,1),m=s(t.rowheight,null,!1),g=0,v=[],b=new Q(D,z),x=new X(b,d,p),y=new Y(b,x,e,f,F,h,m),w=new J(i,q,t,y,x,L,function(){y.resetTopPadding(),y.resetBottomPadding(),arguments.length&&(p=o(arguments[0],1,!1));x.reset(p),$(u,"minIndex"),$(u,"maxIndex"),L()});f&&(f.adapter=w);var I=function(){return"[object Object]"===Object.prototype.toString.call(u)&&"function"==typeof u.get};if(u=q(c)(i),!I()&&(u=D.get(c),!I()))throw new Error(c+" is not a valid datasource");var E=[];function $(e,t){var n;angular.isNumber(e[t])&&(n=e[t],angular.isNumber(n)&&(E=E.filter(function(e){return e.id!==t})).push({id:t,run:function(){return e[t]=n}}))}function P(n,r,i){var o,e=Object.getOwnPropertyDescriptor(n,r);e&&(e.set||e.get)||($(n,r),Object.defineProperty(n,r,{set:function(e){if(o=e,!v.length||x.length){x[i]=e;var t=y.topDataPos();y.adjustPaddings(),"minIndex"===r&&y.onAfterMinIndexSet(t)}else $(n,r)},get:function(){return o}}))}P(u,"minIndex","minIndexUser"),P(u,"maxIndex","maxIndexUser");var T=2!==u.get.length?function(e){return u.get(x.next,d,e)}:function(e){u.get({index:x.next,append:x.length?x[x.length-1].item:void 0,count:d},e)},S=2!==u.get.length?function(e){return u.get(x.first-d,d,e)}:function(e){u.get({index:x.first-d,prepend:x.length?x[0].item:void 0,count:d},e)};function k(e){return e&&e!==g||i.$$destroyed}function A(){y.unbind("resize",N),y.unbind("scroll",N)}function O(e){return!!m||e.element.height()&&e.element[0].offsetParent}function j(e,t){U(e,t,y.insertElement),O(e)||(e.unregisterVisibilityWatcher=e.scope.$watch(function(){O(e)&&(x.forEach(function(e){"function"==typeof e.unregisterVisibilityWatcher&&(e.unregisterVisibilityWatcher(),delete e.unregisterVisibilityWatcher)}),v.length||R(function(){return L()}))})),b.hideElement(e)}function U(n,e,r){var i=null,o=0 obj && obj.document && obj.location && obj.alert && obj.setInterval;\r\n\r\n function scrollTo(self, direction, value) {\r\n let elem = self[0];\r\n let [method, prop, preserve] = {\r\n top: [\r\n 'scrollTop',\r\n 'pageYOffset',\r\n 'scrollLeft'\r\n ],\r\n left: [\r\n 'scrollLeft',\r\n 'pageXOffset',\r\n 'scrollTop'\r\n ]\r\n }[direction];\r\n\r\n const isValueDefined = typeof value !== 'undefined';\r\n if (isWindow(elem)) {\r\n if (isValueDefined) {\r\n return elem.scrollTo(self[preserve].call(self), value);\r\n }\r\n return (prop in elem) ? elem[prop] : elem.document.documentElement[method];\r\n } else {\r\n if (isValueDefined) {\r\n elem[method] = value;\r\n }\r\n return elem[method];\r\n }\r\n }\r\n\r\n if (window.getComputedStyle) {\r\n getStyle = (elem) => window.getComputedStyle(elem, null);\r\n convertToPx = (elem, value) => parseFloat(value);\r\n } else {\r\n getStyle = (elem) => elem.currentStyle;\r\n convertToPx = (elem, value) => {\r\n let left, result, rs, rsLeft, style;\r\n let core_pnum = /[+-]?(?:\\d*\\.|)\\d+(?:[eE][+-]?\\d+|)/.source;\r\n let rnumnonpx = new RegExp('^(' + core_pnum + ')(?!px)[a-z%]+$', 'i');\r\n\r\n if (!rnumnonpx.test(value)) {\r\n return parseFloat(value);\r\n }\r\n\r\n // ported from JQuery\r\n style = elem.style;\r\n left = style.left;\r\n rs = elem.runtimeStyle;\r\n rsLeft = rs && rs.left;\r\n if (rs) {\r\n rs.left = style.left;\r\n }\r\n // put in the new values to get a computed style out\r\n style.left = value;\r\n result = style.pixelLeft;\r\n style.left = left;\r\n if (rsLeft) {\r\n rs.left = rsLeft;\r\n }\r\n return result;\r\n };\r\n }\r\n\r\n function getMeasurements(elem, measure) {\r\n let base, borderA, borderB, computedMarginA, computedMarginB, computedStyle, dirA, dirB, marginA, marginB, paddingA, paddingB;\r\n\r\n if (isWindow(elem)) {\r\n base = document.documentElement[{height: 'clientHeight', width: 'clientWidth'}[measure]];\r\n\r\n return {\r\n base: base,\r\n padding: 0,\r\n border: 0,\r\n margin: 0\r\n };\r\n }\r\n\r\n // Start with offset property\r\n [\r\n base,\r\n dirA,\r\n dirB\r\n ] = {\r\n width: [\r\n elem.offsetWidth,\r\n 'Left',\r\n 'Right'\r\n ],\r\n height: [\r\n elem.offsetHeight,\r\n 'Top',\r\n 'Bottom'\r\n ]\r\n }[measure];\r\n\r\n computedStyle = getStyle(elem);\r\n paddingA = convertToPx(elem, computedStyle['padding' + dirA]) || 0;\r\n paddingB = convertToPx(elem, computedStyle['padding' + dirB]) || 0;\r\n borderA = convertToPx(elem, computedStyle['border' + dirA + 'Width']) || 0;\r\n borderB = convertToPx(elem, computedStyle['border' + dirB + 'Width']) || 0;\r\n computedMarginA = computedStyle['margin' + dirA];\r\n computedMarginB = computedStyle['margin' + dirB];\r\n\r\n // I do not care for width for now, so this hack is irrelevant\r\n // if ( !supportsPercentMargin )\r\n // computedMarginA = hackPercentMargin( elem, computedStyle, computedMarginA )\r\n // computedMarginB = hackPercentMargin( elem, computedStyle, computedMarginB )\r\n marginA = convertToPx(elem, computedMarginA) || 0;\r\n marginB = convertToPx(elem, computedMarginB) || 0;\r\n\r\n return {\r\n base: base,\r\n padding: paddingA + paddingB,\r\n border: borderA + borderB,\r\n margin: marginA + marginB\r\n };\r\n }\r\n\r\n function getWidthHeight(elem, direction, measure) {\r\n let computedStyle, result;\r\n\r\n let measurements = getMeasurements(elem, direction);\r\n\r\n if (measurements.base > 0) {\r\n return {\r\n base: measurements.base - measurements.padding - measurements.border,\r\n outer: measurements.base,\r\n outerfull: measurements.base + measurements.margin\r\n }[measure];\r\n }\r\n\r\n // Fall back to computed then uncomputed css if necessary\r\n computedStyle = getStyle(elem);\r\n result = computedStyle[direction];\r\n\r\n if (result < 0 || result === null) {\r\n result = elem.style[direction] || 0;\r\n }\r\n\r\n // Normalize \"\", auto, and prepare for extra\r\n result = parseFloat(result) || 0;\r\n\r\n return {\r\n base: result - measurements.padding - measurements.border,\r\n outer: result,\r\n outerfull: result + measurements.padding + measurements.border + measurements.margin\r\n }[measure];\r\n }\r\n\r\n // define missing methods\r\n return angular.forEach({\r\n before(newElem) {\r\n var children, elem, i, j, parent, ref, self;\r\n self = this;\r\n elem = self[0];\r\n parent = self.parent();\r\n children = parent.contents();\r\n if (children[0] === elem) {\r\n return parent.prepend(newElem);\r\n } else {\r\n for (i = j = 1, ref = children.length - 1; 1 <= ref ? j <= ref : j >= ref; i = 1 <= ref ? ++j : --j) {\r\n if (children[i] === elem) {\r\n angular.element(children[i - 1]).after(newElem);\r\n return;\r\n }\r\n }\r\n throw new Error('invalid DOM structure ' + elem.outerHTML);\r\n }\r\n },\r\n height (value){\r\n var self;\r\n self = this;\r\n if (typeof value !== 'undefined') {\r\n if (angular.isNumber(value)) {\r\n value = value + 'px';\r\n }\r\n return css.call(self, 'height', value);\r\n } else {\r\n return getWidthHeight(this[0], 'height', 'base');\r\n }\r\n },\r\n outerHeight(option) {\r\n return getWidthHeight(this[0], 'height', option ? 'outerfull' : 'outer');\r\n },\r\n outerWidth(option) {\r\n return getWidthHeight(this[0], 'width', option ? 'outerfull' : 'outer');\r\n },\r\n\r\n /*\r\n The offset setter method is not implemented\r\n */\r\n offset(value) {\r\n let docElem, win;\r\n let self = this;\r\n let box = {\r\n top: 0,\r\n left: 0\r\n };\r\n let elem = self[0];\r\n let doc = elem && elem.ownerDocument;\r\n\r\n if (arguments.length) {\r\n if (value === undefined) {\r\n return self;\r\n }\r\n // TODO: implement setter\r\n throw new Error('offset setter method is not implemented');\r\n }\r\n\r\n if (!doc) {\r\n return;\r\n }\r\n\r\n docElem = doc.documentElement;\r\n\r\n // TODO: Make sure it's not a disconnected DOM node\r\n\r\n if (elem.getBoundingClientRect != null) {\r\n box = elem.getBoundingClientRect();\r\n }\r\n\r\n win = doc.defaultView || doc.parentWindow;\r\n\r\n return {\r\n top: box.top + (win.pageYOffset || docElem.scrollTop) - (docElem.clientTop || 0),\r\n left: box.left + (win.pageXOffset || docElem.scrollLeft) - (docElem.clientLeft || 0)\r\n };\r\n },\r\n scrollTop(value) {\r\n return scrollTo(this, 'top', value);\r\n },\r\n scrollLeft(value) {\r\n return scrollTo(this, 'left', value);\r\n }\r\n }, (value, key) => {\r\n if (!element.prototype[key]) {\r\n return element.prototype[key] = value;\r\n }\r\n });\r\n }\r\n\r\n}\r\n","const hideClassToken = 'ng-ui-scroll-hide';\r\n\r\nexport default class ElementRoutines {\r\n\r\n static addCSSRules() {\r\n const selector = '.' + hideClassToken;\r\n const rules = 'display: none';\r\n const sheet = document.styleSheets[0];\r\n let index;\r\n try {\r\n index = sheet.cssRules.length;\r\n } catch (err) {\r\n index = 0;\r\n }\r\n if('insertRule' in sheet) {\r\n sheet.insertRule(selector + '{' + rules + '}', index);\r\n }\r\n else if('addRule' in sheet) {\r\n sheet.addRule(selector, rules, index);\r\n }\r\n }\r\n\r\n constructor($injector, $q) {\r\n this.$animate = ($injector.has && $injector.has('$animate')) ? $injector.get('$animate') : null;\r\n this.isAngularVersionLessThen1_3 = angular.version.major === 1 && angular.version.minor < 3;\r\n this.$q = $q;\r\n }\r\n\r\n hideElement(wrapper) {\r\n wrapper.element.addClass(hideClassToken);\r\n }\r\n\r\n showElement(wrapper) {\r\n wrapper.element.removeClass(hideClassToken);\r\n }\r\n\r\n insertElement(newElement, previousElement) {\r\n previousElement.after(newElement);\r\n return [];\r\n }\r\n\r\n removeElement(wrapper) {\r\n wrapper.element.remove();\r\n wrapper.scope.$destroy();\r\n return [];\r\n }\r\n\r\n insertElementAnimated(newElement, previousElement) {\r\n if (!this.$animate) {\r\n return this.insertElement(newElement, previousElement);\r\n }\r\n\r\n if (this.isAngularVersionLessThen1_3) {\r\n const deferred = this.$q.defer();\r\n // no need for parent - previous element is never null\r\n this.$animate.enter(newElement, null, previousElement, () => deferred.resolve());\r\n\r\n return [deferred.promise];\r\n }\r\n\r\n // no need for parent - previous element is never null\r\n return [this.$animate.enter(newElement, null, previousElement)];\r\n }\r\n\r\n removeElementAnimated(wrapper) {\r\n if (!this.$animate) {\r\n return this.removeElement(wrapper);\r\n }\r\n\r\n if (this.isAngularVersionLessThen1_3) {\r\n const deferred = this.$q.defer();\r\n this.$animate.leave(wrapper.element, () => {\r\n wrapper.scope.$destroy();\r\n return deferred.resolve();\r\n });\r\n\r\n return [deferred.promise];\r\n }\r\n\r\n return [(this.$animate.leave(wrapper.element)).then(() => wrapper.scope.$destroy())];\r\n }\r\n}","export default function ScrollBuffer(elementRoutines, bufferSize, startIndex) {\r\n const buffer = Object.create(Array.prototype);\r\n\r\n angular.extend(buffer, {\r\n size: bufferSize,\r\n\r\n reset(startIndex) {\r\n buffer.remove(0, buffer.length);\r\n buffer.eof = false;\r\n buffer.bof = false;\r\n buffer.first = startIndex;\r\n buffer.next = startIndex;\r\n buffer.minIndex = startIndex;\r\n buffer.maxIndex = startIndex;\r\n buffer.minIndexUser = null;\r\n buffer.maxIndexUser = null;\r\n },\r\n\r\n append(items) {\r\n items.forEach((item) => {\r\n ++buffer.next;\r\n buffer.insert('append', item);\r\n });\r\n buffer.maxIndex = buffer.eof ? buffer.next - 1 : Math.max(buffer.next - 1, buffer.maxIndex);\r\n },\r\n\r\n prepend(items) {\r\n items.reverse().forEach((item) => {\r\n --buffer.first;\r\n buffer.insert('prepend', item);\r\n });\r\n buffer.minIndex = buffer.bof ? buffer.minIndex = buffer.first : Math.min(buffer.first, buffer.minIndex);\r\n },\r\n\r\n /**\r\n * inserts wrapped element in the buffer\r\n * the first argument is either operation keyword (see below) or a number for operation 'insert'\r\n * for insert the number is the index for the buffer element the new one have to be inserted after\r\n * operations: 'append', 'prepend', 'insert', 'remove', 'update', 'none'\r\n */\r\n insert(operation, item, isTop) {\r\n const wrapper = {\r\n item: item\r\n };\r\n\r\n if (operation % 1 === 0) {// it is an insert\r\n wrapper.op = 'insert';\r\n buffer.splice(operation, 0, wrapper);\r\n if(isTop) {\r\n buffer.first--;\r\n }\r\n else {\r\n buffer.next++;\r\n }\r\n } else {\r\n wrapper.op = operation;\r\n switch (operation) {\r\n case 'append':\r\n buffer.push(wrapper);\r\n break;\r\n case 'prepend':\r\n buffer.unshift(wrapper);\r\n break;\r\n }\r\n }\r\n },\r\n\r\n // removes elements from buffer\r\n remove(arg1, arg2) {\r\n if (angular.isNumber(arg1)) {\r\n // removes items from arg1 (including) through arg2 (excluding)\r\n for (let i = arg1; i < arg2; i++) {\r\n elementRoutines.removeElement(buffer[i]);\r\n }\r\n return buffer.splice(arg1, arg2 - arg1);\r\n }\r\n // removes single item(wrapper) from the buffer\r\n buffer.splice(buffer.indexOf(arg1), 1);\r\n if(arg1._op === 'isTop' && buffer.first === this.getAbsMinIndex()) {\r\n this.incrementMinIndex();\r\n }\r\n else {\r\n this.decrementMaxIndex();\r\n }\r\n if(arg1._op === 'isTop') {\r\n buffer.first++;\r\n }\r\n else {\r\n buffer.next--;\r\n }\r\n if(!buffer.length) {\r\n buffer.first = 1;\r\n buffer.next = 1;\r\n }\r\n\r\n return elementRoutines.removeElementAnimated(arg1);\r\n },\r\n\r\n incrementMinIndex() {\r\n if(buffer.minIndexUser !== null) {\r\n if(buffer.minIndex > buffer.minIndexUser) {\r\n buffer.minIndexUser++;\r\n return;\r\n }\r\n if(buffer.minIndex === buffer.minIndexUser) {\r\n buffer.minIndexUser++;\r\n }\r\n }\r\n buffer.minIndex++;\r\n },\r\n\r\n decrementMaxIndex() {\r\n if(buffer.maxIndexUser !== null && buffer.maxIndex <= buffer.maxIndexUser) {\r\n buffer.maxIndexUser--;\r\n }\r\n buffer.maxIndex--;\r\n },\r\n\r\n getAbsMinIndex() {\r\n if(buffer.minIndexUser !== null) {\r\n return Math.min(buffer.minIndexUser, buffer.minIndex);\r\n }\r\n return buffer.minIndex;\r\n },\r\n\r\n getAbsMaxIndex() {\r\n if(buffer.maxIndexUser !== null) {\r\n return Math.max(buffer.maxIndexUser, buffer.maxIndex);\r\n }\r\n return buffer.maxIndex;\r\n },\r\n\r\n effectiveHeight(elements) {\r\n if (!elements.length) {\r\n return 0;\r\n }\r\n let top = Number.MAX_VALUE;\r\n let bottom = Number.NEGATIVE_INFINITY;\r\n elements.forEach((wrapper) => {\r\n if (wrapper.element[0].offsetParent) {\r\n // element style is not display:none\r\n top = Math.min(top, wrapper.element.offset().top);\r\n bottom = Math.max(bottom, wrapper.element.offset().top + wrapper.element.outerHeight(true));\r\n }\r\n });\r\n return Math.max(0, bottom - top);\r\n }\r\n\r\n });\r\n\r\n buffer.reset(startIndex);\r\n\r\n return buffer;\r\n}\r\n","// Can't just extend the Array, due to Babel does not support built-in classes extending\r\n// This solution was taken from https://stackoverflow.com/questions/46897414/es6-class-extends-array-workaround-for-es5-babel-transpile\r\nclass CacheProto {\r\n add(item) {\r\n for (let i = this.length - 1; i >= 0; i--) {\r\n if (this[i].index === item.scope.$index) {\r\n this[i].height = item.element.outerHeight();\r\n return;\r\n }\r\n }\r\n this.push({\r\n index: item.scope.$index,\r\n height: item.element.outerHeight()\r\n });\r\n this.sort((a, b) => ((a.index < b.index) ? -1 : ((a.index > b.index) ? 1 : 0)));\r\n }\r\n\r\n remove(argument, _isTop) {\r\n const index = argument % 1 === 0 ? argument : argument.scope.$index;\r\n const isTop = argument % 1 === 0 ? _isTop : argument._op === 'isTop';\r\n for (let i = this.length - 1; i >= 0; i--) {\r\n if (this[i].index === index) {\r\n this.splice(i, 1);\r\n break;\r\n }\r\n }\r\n if(!isTop) {\r\n for (let i = this.length - 1; i >= 0; i--) {\r\n if (this[i].index > index) {\r\n this[i].index--;\r\n }\r\n }\r\n }\r\n }\r\n\r\n clear() {\r\n this.length = 0;\r\n }\r\n}\r\n\r\nfunction Cache() {\r\n const instance = [];\r\n instance.push.apply(instance, arguments);\r\n Object.setPrototypeOf(instance, Cache.prototype);\r\n return instance;\r\n}\r\nCache.prototype = Object.create(Array.prototype);\r\nObject.getOwnPropertyNames(CacheProto.prototype).forEach(methodName =>\r\n Cache.prototype[methodName] = CacheProto.prototype[methodName]\r\n);\r\n\r\nfunction generateElement(template) {\r\n if(template.nodeType !== Node.ELEMENT_NODE) {\r\n throw new Error('ui-scroll directive requires an Element node for templating the view');\r\n }\r\n let element;\r\n switch (template.tagName.toLowerCase()) {\r\n case 'dl':\r\n throw new Error(`ui-scroll directive does not support <${template.tagName}> as a repeating tag: ${template.outerHTML}`);\r\n case 'tr':\r\n let table = angular.element('
    ');\r\n element = table.find('tr');\r\n break;\r\n case 'li':\r\n element = angular.element('
  • ');\r\n break;\r\n default:\r\n element = angular.element('
    ');\r\n }\r\n return element;\r\n}\r\n\r\nclass Padding {\r\n constructor(template) {\r\n this.element = generateElement(template);\r\n this.cache = new Cache();\r\n }\r\n\r\n height() {\r\n return this.element.height.apply(this.element, arguments);\r\n }\r\n}\r\n\r\nexport default Padding;","import Padding from './padding';\r\n\r\nexport default function Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding) {\r\n let topPadding = null;\r\n let bottomPadding = null;\r\n const viewport = viewportController && viewportController.viewport ? viewportController.viewport : angular.element(window);\r\n const container = viewportController && viewportController.container ? viewportController.container : undefined;\r\n const scope = viewportController && viewportController.scope ? viewportController.scope : $rootScope;\r\n\r\n viewport.css({\r\n 'overflow-anchor': 'none',\r\n 'overflow-y': 'auto',\r\n 'display': 'block'\r\n });\r\n\r\n function bufferPadding() {\r\n return viewport.outerHeight() * padding; // some extra space to initiate preload\r\n }\r\n\r\n angular.extend(viewport, {\r\n getScope() {\r\n return scope;\r\n },\r\n\r\n createPaddingElements(template) {\r\n topPadding = new Padding(template);\r\n bottomPadding = new Padding(template);\r\n element.before(topPadding.element);\r\n element.after(bottomPadding.element);\r\n topPadding.height(0);\r\n bottomPadding.height(0);\r\n },\r\n\r\n applyContainerStyle() {\r\n if (!container) {\r\n return true;\r\n }\r\n if(container !== viewport) {\r\n viewport.css('height', window.getComputedStyle(container[0]).height);\r\n }\r\n return viewport.height() > 0;\r\n },\r\n\r\n bottomDataPos() {\r\n let scrollHeight = viewport[0].scrollHeight;\r\n scrollHeight = scrollHeight != null ? scrollHeight : viewport[0].document.documentElement.scrollHeight;\r\n return scrollHeight - bottomPadding.height();\r\n },\r\n\r\n topDataPos() {\r\n return topPadding.height();\r\n },\r\n\r\n bottomVisiblePos() {\r\n return viewport.scrollTop() + viewport.outerHeight();\r\n },\r\n\r\n topVisiblePos() {\r\n return viewport.scrollTop();\r\n },\r\n\r\n insertElement(e, sibling) {\r\n return elementRoutines.insertElement(e, sibling || topPadding.element);\r\n },\r\n\r\n insertElementAnimated(e, sibling) {\r\n return elementRoutines.insertElementAnimated(e, sibling || topPadding.element);\r\n },\r\n\r\n shouldLoadBottom() {\r\n return !buffer.eof && viewport.bottomDataPos() < viewport.bottomVisiblePos() + bufferPadding();\r\n },\r\n\r\n clipBottom() {\r\n // clip the invisible items off the bottom\r\n let overage = 0;\r\n let overageHeight = 0;\r\n let itemHeight = 0;\r\n let emptySpaceHeight = viewport.bottomDataPos() - viewport.bottomVisiblePos() - bufferPadding();\r\n\r\n for (let i = buffer.length - 1; i >= 0; i--) {\r\n itemHeight = buffer[i].element.outerHeight(true);\r\n if (overageHeight + itemHeight > emptySpaceHeight) {\r\n break;\r\n }\r\n bottomPadding.cache.add(buffer[i]);\r\n overageHeight += itemHeight;\r\n overage++;\r\n }\r\n\r\n if (overage > 0) {\r\n buffer.eof = false;\r\n buffer.remove(buffer.length - overage, buffer.length);\r\n buffer.next -= overage;\r\n viewport.adjustPaddings();\r\n }\r\n },\r\n\r\n shouldLoadTop() {\r\n return !buffer.bof && (viewport.topDataPos() > viewport.topVisiblePos() - bufferPadding());\r\n },\r\n\r\n clipTop() {\r\n // clip the invisible items off the top\r\n let overage = 0;\r\n let overageHeight = 0;\r\n let itemHeight = 0;\r\n let emptySpaceHeight = viewport.topVisiblePos() - viewport.topDataPos() - bufferPadding();\r\n\r\n for (let i = 0; i < buffer.length; i++) {\r\n itemHeight = buffer[i].element.outerHeight(true);\r\n if (overageHeight + itemHeight > emptySpaceHeight) {\r\n break;\r\n }\r\n topPadding.cache.add(buffer[i]);\r\n overageHeight += itemHeight;\r\n overage++;\r\n }\r\n\r\n if (overage > 0) {\r\n // we need to adjust top padding element before items are removed from top\r\n // to avoid strange behaviour of scroll bar during remove top items when we are at the very bottom\r\n topPadding.height(topPadding.height() + overageHeight);\r\n buffer.bof = false;\r\n buffer.remove(0, overage);\r\n buffer.first += overage;\r\n }\r\n },\r\n\r\n adjustPaddings() {\r\n if (!buffer.length) {\r\n return;\r\n }\r\n\r\n // precise heights calculation based on items that are in buffer or that were in buffer once\r\n const visibleItemsHeight = buffer.reduce((summ, item) => summ + item.element.outerHeight(true), 0);\r\n\r\n let topPaddingHeight = 0, topCount = 0;\r\n topPadding.cache.forEach(item => {\r\n if(item.index < buffer.first) {\r\n topPaddingHeight += item.height;\r\n topCount++;\r\n }\r\n });\r\n\r\n let bottomPaddingHeight = 0, bottomCount = 0;\r\n bottomPadding.cache.forEach(item => {\r\n if(item.index >= buffer.next) {\r\n bottomPaddingHeight += item.height;\r\n bottomCount++;\r\n }\r\n });\r\n\r\n const totalHeight = visibleItemsHeight + topPaddingHeight + bottomPaddingHeight;\r\n const averageItemHeight = totalHeight / (topCount + bottomCount + buffer.length);\r\n\r\n // average heights calculation, items that have never been reached\r\n let adjustTopPadding = buffer.minIndexUser !== null && buffer.minIndex > buffer.minIndexUser;\r\n let adjustBottomPadding = buffer.maxIndexUser !== null && buffer.maxIndex < buffer.maxIndexUser;\r\n let topPaddingHeightAdd = adjustTopPadding ? (buffer.minIndex - buffer.minIndexUser) * averageItemHeight : 0;\r\n let bottomPaddingHeightAdd = adjustBottomPadding ? (buffer.maxIndexUser - buffer.maxIndex) * averageItemHeight : 0;\r\n\r\n // paddings combine adjustment\r\n topPadding.height(topPaddingHeight + topPaddingHeightAdd);\r\n bottomPadding.height(bottomPaddingHeight + bottomPaddingHeightAdd);\r\n },\r\n\r\n onAfterMinIndexSet(topPaddingHeightOld) {\r\n // additional scrollTop adjustment in case of datasource.minIndex external set\r\n if (buffer.minIndexUser !== null && buffer.minIndex > buffer.minIndexUser) {\r\n let diff = topPadding.height() - topPaddingHeightOld;\r\n viewport.scrollTop(viewport.scrollTop() + diff);\r\n while((diff -= viewport.scrollTop()) > 0) {\r\n bottomPadding.height(bottomPadding.height() + diff);\r\n viewport.scrollTop(viewport.scrollTop() + diff);\r\n }\r\n }\r\n },\r\n\r\n onAfterPrepend(updates) {\r\n if (!updates.prepended.length)\r\n return;\r\n const height = buffer.effectiveHeight(updates.prepended);\r\n const paddingHeight = topPadding.height() - height;\r\n if (paddingHeight >= 0) {\r\n topPadding.height(paddingHeight);\r\n }\r\n else {\r\n topPadding.height(0);\r\n viewport.scrollTop(viewport.scrollTop() - paddingHeight);\r\n }\r\n },\r\n\r\n resetTopPadding() {\r\n topPadding.height(0);\r\n topPadding.cache.clear();\r\n },\r\n\r\n resetBottomPadding() {\r\n bottomPadding.height(0);\r\n bottomPadding.cache.clear();\r\n },\r\n\r\n removeCacheItem(item, isTop) {\r\n topPadding.cache.remove(item, isTop);\r\n bottomPadding.cache.remove(item, isTop);\r\n },\r\n\r\n removeItem(item) {\r\n this.removeCacheItem(item);\r\n return buffer.remove(item);\r\n }\r\n });\r\n\r\n return viewport;\r\n}\r\n","class Adapter {\r\n\r\n constructor($scope, $parse, $attr, viewport, buffer, doAdjust, reload) {\r\n this.$parse = $parse;\r\n this.$attr = $attr;\r\n this.viewport = viewport;\r\n this.buffer = buffer;\r\n\r\n this.doAdjust = doAdjust;\r\n this.reload = reload;\r\n\r\n this.isLoading = false;\r\n this.disabled = false;\r\n\r\n const viewportScope = viewport.getScope();\r\n this.startScope = viewportScope.$parent ? viewportScope : $scope;\r\n\r\n this.publicContext = {};\r\n this.assignAdapter($attr.adapter);\r\n this.generatePublicContext();\r\n }\r\n\r\n assignAdapter(adapterAttr) {\r\n if (!adapterAttr || !(adapterAttr = adapterAttr.replace(/^\\s+|\\s+$/gm, ''))) {\r\n return;\r\n }\r\n let adapterOnScope;\r\n\r\n try {\r\n this.$parse(adapterAttr).assign(this.startScope, {});\r\n adapterOnScope = this.$parse(adapterAttr)(this.startScope);\r\n }\r\n catch (error) {\r\n error.message = `Angular ui-scroll Adapter assignment exception.\\n` +\r\n `Can't parse \"${adapterAttr}\" expression.\\n` +\r\n error.message;\r\n throw error;\r\n }\r\n\r\n angular.extend(adapterOnScope, this.publicContext);\r\n this.publicContext = adapterOnScope;\r\n }\r\n\r\n generatePublicContext() {\r\n // these methods will be accessible out of ui-scroll via user defined adapter\r\n const publicMethods = ['reload', 'applyUpdates', 'append', 'prepend', 'isBOF', 'isEOF', 'isEmpty'];\r\n for (let i = publicMethods.length - 1; i >= 0; i--) {\r\n this.publicContext[publicMethods[i]] = this[publicMethods[i]].bind(this);\r\n }\r\n\r\n // these read-only props will be accessible out of ui-scroll via user defined adapter\r\n const publicProps = ['isLoading', 'topVisible', 'topVisibleElement', 'topVisibleScope', 'bottomVisible', 'bottomVisibleElement', 'bottomVisibleScope'];\r\n for (let i = publicProps.length - 1; i >= 0; i--) {\r\n let property, attr = this.$attr[publicProps[i]];\r\n Object.defineProperty(this, publicProps[i], {\r\n get: () => property,\r\n set: (value) => {\r\n property = value;\r\n this.publicContext[publicProps[i]] = value;\r\n if (attr) {\r\n this.$parse(attr).assign(this.startScope, value);\r\n }\r\n }\r\n });\r\n }\r\n\r\n // non-read-only public property\r\n Object.defineProperty(this.publicContext, 'disabled', {\r\n get: () => this.disabled,\r\n set: (value) => (!(this.disabled = value)) ? this.doAdjust() : null\r\n });\r\n }\r\n\r\n loading(value) {\r\n this.isLoading = value;\r\n }\r\n\r\n isBOF() {\r\n return this.buffer.bof;\r\n }\r\n\r\n isEOF() {\r\n return this.buffer.eof;\r\n }\r\n\r\n isEmpty() {\r\n return !this.buffer.length;\r\n }\r\n\r\n append(newItems) {\r\n this.buffer.append(newItems);\r\n this.doAdjust();\r\n this.viewport.clipTop();\r\n this.viewport.clipBottom();\r\n }\r\n\r\n prepend(newItems) {\r\n this.buffer.prepend(newItems);\r\n this.doAdjust();\r\n this.viewport.clipTop();\r\n this.viewport.clipBottom();\r\n }\r\n\r\n applyUpdates(arg1, arg2) {\r\n if (typeof arg1 === 'function') {\r\n this.applyUpdatesFunc(arg1);\r\n } else {\r\n this.applyUpdatesIndex(arg1, arg2);\r\n }\r\n this.doAdjust();\r\n }\r\n\r\n applyUpdatesFunc(cb) {\r\n this.buffer.slice(0).forEach((wrapper) => {\r\n // we need to do it on the buffer clone, because buffer content\r\n // may change as we iterate through\r\n this.applyUpdate(wrapper, cb(wrapper.item, wrapper.scope, wrapper.element));\r\n });\r\n }\r\n\r\n applyUpdatesIndex(index, newItems) {\r\n if (index % 1 !== 0) {\r\n throw new Error('applyUpdates - ' + index + ' is not a valid index (should be an integer)');\r\n }\r\n const _index = index - this.buffer.first;\r\n\r\n // apply updates only within buffer\r\n if (_index >= 0 && _index < this.buffer.length) {\r\n this.applyUpdate(this.buffer[_index], newItems);\r\n }\r\n // out-of-buffer case: deletion may affect Paddings\r\n else if(index >= this.buffer.getAbsMinIndex() && index <= this.buffer.getAbsMaxIndex()) {\r\n if(angular.isArray(newItems) && !newItems.length) {\r\n this.viewport.removeCacheItem(index, index === this.buffer.minIndex);\r\n if(index === this.buffer.getAbsMinIndex()) {\r\n this.buffer.incrementMinIndex();\r\n }\r\n else {\r\n this.buffer.decrementMaxIndex();\r\n }\r\n }\r\n }\r\n }\r\n\r\n applyUpdate(wrapper, newItems) {\r\n if (!angular.isArray(newItems)) {\r\n return;\r\n }\r\n let position = this.buffer.indexOf(wrapper);\r\n if (!newItems.reverse().some(newItem => newItem === wrapper.item)) {\r\n wrapper.op = 'remove';\r\n if(position === 0 && !newItems.length) {\r\n wrapper._op = 'isTop'; // to catch \"first\" edge case on remove\r\n }\r\n }\r\n newItems.forEach((newItem) => {\r\n if (newItem === wrapper.item) {\r\n position--;\r\n } else {\r\n // 3 parameter (isTop) is to catch \"first\" edge case on insert\r\n this.buffer.insert(position + 1, newItem, position === -1);\r\n }\r\n });\r\n }\r\n\r\n calculateProperties() {\r\n let rowTop = null, topHeight = 0;\r\n let topDone = false, bottomDone = false;\r\n const length = this.buffer.length;\r\n\r\n for (let i = 0; i < length; i++) {\r\n const item = this.buffer[i];\r\n const itemTop = item.element.offset().top;\r\n\r\n if (rowTop !== itemTop) { // a new row condition\r\n const itemHeight = item.element.outerHeight(true);\r\n const top = this.viewport.topDataPos() + topHeight + itemHeight;\r\n\r\n if (!topDone && top > this.viewport.topVisiblePos()) {\r\n topDone = true;\r\n this['topVisible'] = item.item;\r\n this['topVisibleElement'] = item.element;\r\n this['topVisibleScope'] = item.scope;\r\n }\r\n if (!bottomDone && (top >= this.viewport.bottomVisiblePos() || (i === length - 1 && this.isEOF()))) {\r\n bottomDone = true;\r\n this['bottomVisible'] = item.item;\r\n this['bottomVisibleElement'] = item.element;\r\n this['bottomVisibleScope'] = item.scope;\r\n }\r\n topHeight += itemHeight;\r\n }\r\n rowTop = itemTop;\r\n\r\n if (topDone && bottomDone) {\r\n break;\r\n }\r\n }\r\n }\r\n\r\n}\r\n\r\nexport default Adapter;\r\n","import JQLiteExtras from './modules/jqLiteExtras';\nimport ElementRoutines from './modules/elementRoutines.js';\nimport ScrollBuffer from './modules/buffer.js';\nimport Viewport from './modules/viewport.js';\nimport Adapter from './modules/adapter.js';\n\nangular.module('ui.scroll', [])\n\n .constant('JQLiteExtras', JQLiteExtras)\n .run(['JQLiteExtras', (JQLiteExtras) => {\n !window.jQuery ? (new JQLiteExtras()).registerFor(angular.element) : null;\n ElementRoutines.addCSSRules();\n }])\n\n .directive('uiScrollViewport', function () {\n return {\n restrict: 'A',\n controller: [\n '$scope',\n '$element',\n function (scope, element) {\n this.container = element;\n this.viewport = element;\n this.scope = scope;\n\n angular.forEach(element.children(), child => {\n if (child.tagName.toLowerCase() === 'tbody') {\n this.viewport = angular.element(child);\n }\n });\n\n return this;\n }\n ]\n };\n })\n\n .directive('uiScroll', [\n '$log',\n '$injector',\n '$rootScope',\n '$timeout',\n '$interval',\n '$q',\n '$parse',\n function (console, $injector, $rootScope, $timeout, $interval, $q, $parse) {\n\n return {\n require: ['?^uiScrollViewport'],\n restrict: 'A',\n transclude: 'element',\n priority: 1000,\n terminal: true,\n link: link\n };\n\n function link($scope, element, $attr, controllers, linker) {\n const match = $attr.uiScroll.match(/^\\s*(\\w+)\\s+in\\s+([(\\w|\\$)\\.]+)\\s*$/);\n if (!match) {\n throw new Error('Expected uiScroll in form of \\'_item_ in _datasource_\\' but got \\'' + $attr.uiScroll + '\\'');\n }\n\n function parseNumber(value, defaultValue, isFloat) {\n if (!isFloat) {\n value = value === null ? defaultValue : Math.floor(value);\n }\n return isNaN(value) ? defaultValue : value;\n }\n\n function parseNumericAttr(value, defaultValue, isFloat) {\n const result = $parse(value)($scope);\n return parseNumber(result, defaultValue, isFloat);\n }\n\n const BUFFER_MIN = 3;\n const BUFFER_DEFAULT = 10;\n const PADDING_MIN = 0.3;\n const PADDING_DEFAULT = 0.5;\n const START_INDEX_DEFAULT = 1;\n const MAX_VIEWPORT_DELAY = 500;\n const VIEWPORT_POLLING_INTERVAL = 50;\n\n let datasource = null;\n const itemName = match[1];\n const datasourceName = match[2];\n const viewportController = controllers[0];\n const bufferSize = Math.max(BUFFER_MIN, parseNumericAttr($attr.bufferSize, BUFFER_DEFAULT));\n const padding = Math.max(PADDING_MIN, parseNumericAttr($attr.padding, PADDING_DEFAULT, true));\n let startIndex = parseNumericAttr($attr.startIndex, START_INDEX_DEFAULT);\n let ridActual = 0; // current data revision id\n let pending = [];\n\n const elementRoutines = new ElementRoutines($injector, $q);\n const buffer = new ScrollBuffer(elementRoutines, bufferSize, startIndex);\n const viewport = new Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding);\n const adapter = new Adapter($scope, $parse, $attr, viewport, buffer, doAdjust, reload);\n\n if (viewportController) {\n viewportController.adapter = adapter;\n }\n\n const isDatasourceValid = () =>\n Object.prototype.toString.call(datasource) === '[object Object]' && typeof datasource.get === 'function';\n\n datasource = $parse(datasourceName)($scope); // try to get datasource on scope\n if (!isDatasourceValid()) {\n datasource = $injector.get(datasourceName); // try to inject datasource as service\n if (!isDatasourceValid()) {\n throw new Error(datasourceName + ' is not a valid datasource');\n }\n }\n\n let onRenderHandlers = [];\n function onRenderHandlersRunner() {\n onRenderHandlers.forEach(handler => handler.run());\n onRenderHandlers = [];\n }\n function persistDatasourceIndex(datasource, propName) {\n let getter;\n // need to postpone min/maxIndexUser processing if the view is empty\n if(angular.isNumber(datasource[propName])) {\n getter = datasource[propName];\n if(angular.isNumber(getter)) {\n onRenderHandlers = onRenderHandlers.filter(handler => handler.id !== propName);\n onRenderHandlers.push({\n id: propName,\n run: () => datasource[propName] = getter\n });\n }\n }\n }\n\n function defineDatasourceIndex(datasource, propName, propUserName) {\n const descriptor = Object.getOwnPropertyDescriptor(datasource, propName);\n if (descriptor && (descriptor.set || descriptor.get)) {\n return;\n }\n let getter;\n persistDatasourceIndex(datasource, propName);\n Object.defineProperty(datasource, propName, {\n set: (value) => {\n getter = value;\n if(pending.length && !buffer.length) {\n persistDatasourceIndex(datasource, propName);\n return;\n }\n buffer[propUserName] = value;\n const topPaddingHeightOld = viewport.topDataPos();\n viewport.adjustPaddings();\n if (propName === 'minIndex') {\n viewport.onAfterMinIndexSet(topPaddingHeightOld);\n }\n },\n get: () => getter\n });\n }\n\n defineDatasourceIndex(datasource, 'minIndex', 'minIndexUser');\n defineDatasourceIndex(datasource, 'maxIndex', 'maxIndexUser');\n\n const fetchNext = (datasource.get.length !== 2) ?\n (success) => datasource.get(buffer.next, bufferSize, success) :\n (success) => {\n datasource.get({\n index: buffer.next,\n append: buffer.length ? buffer[buffer.length - 1].item : void 0,\n count: bufferSize\n }, success);\n };\n\n const fetchPrevious = (datasource.get.length !== 2) ?\n (success) => datasource.get(buffer.first - bufferSize, bufferSize, success) :\n (success) => {\n datasource.get({\n index: buffer.first - bufferSize,\n prepend: buffer.length ? buffer[0].item : void 0,\n count: bufferSize\n }, success);\n };\n\n const initialize = () => {\n let tryCount = 0;\n if(!viewport.applyContainerStyle()) {\n const timer = $interval(() => {\n tryCount++;\n if(viewport.applyContainerStyle()) {\n $interval.cancel(timer);\n doAdjust();\n }\n if(tryCount * VIEWPORT_POLLING_INTERVAL >= MAX_VIEWPORT_DELAY) {\n $interval.cancel(timer);\n throw Error(`ui-scroll directive requires a viewport with non-zero height in ${MAX_VIEWPORT_DELAY}ms`);\n }\n }, VIEWPORT_POLLING_INTERVAL);\n }\n else {\n doAdjust();\n }\n };\n\n /**\n * Build padding elements\n *\n * Calling linker is the only way I found to get access to the tag name of the template\n * to prevent the directive scope from pollution a new scope is created and destroyed\n * right after the builder creation is completed\n */\n linker((clone, scope) => {\n viewport.createPaddingElements(clone[0]);\n // we do not include the clone in the DOM. It means that the nested directives will not\n // be able to reach the parent directives, but in this case it is intentional because we\n // created the clone to access the template tag name\n scope.$destroy();\n clone.remove();\n });\n\n $scope.$on('$destroy', () => {\n unbindEvents();\n viewport.unbind('mousewheel', wheelHandler);\n });\n\n viewport.bind('mousewheel', wheelHandler);\n\n initialize();\n\n /* Private function definitions */\n\n function isInvalid(rid) {\n return (rid && rid !== ridActual) || $scope.$$destroyed;\n }\n\n function bindEvents() {\n viewport.bind('resize', resizeAndScrollHandler);\n viewport.bind('scroll', resizeAndScrollHandler);\n }\n\n function unbindEvents() {\n viewport.unbind('resize', resizeAndScrollHandler);\n viewport.unbind('scroll', resizeAndScrollHandler);\n }\n\n function reload() {\n viewport.resetTopPadding();\n viewport.resetBottomPadding();\n if (arguments.length) {\n startIndex = parseNumber(arguments[0], START_INDEX_DEFAULT, false);\n }\n buffer.reset(startIndex);\n persistDatasourceIndex(datasource, 'minIndex');\n persistDatasourceIndex(datasource, 'maxIndex');\n doAdjust();\n }\n\n function isElementVisible(wrapper) {\n return wrapper.element.height() && wrapper.element[0].offsetParent;\n }\n\n function visibilityWatcher(wrapper) {\n if (isElementVisible(wrapper)) {\n buffer.forEach((item) => {\n if (typeof item.unregisterVisibilityWatcher === 'function') {\n item.unregisterVisibilityWatcher();\n delete item.unregisterVisibilityWatcher;\n }\n });\n if (!pending.length) {\n $timeout(() => doAdjust());\n }\n }\n }\n\n function insertWrapperContent(wrapper, insertAfter) {\n createElement(wrapper, insertAfter, viewport.insertElement);\n if (!isElementVisible(wrapper)) {\n wrapper.unregisterVisibilityWatcher = wrapper.scope.$watch(() => visibilityWatcher(wrapper));\n }\n elementRoutines.hideElement(wrapper); // hide inserted elements before data binding\n }\n\n function createElement(wrapper, insertAfter, insertElement) {\n let promises = null;\n const sibling = (insertAfter > 0) ? buffer[insertAfter - 1].element : undefined;\n linker((clone, scope) => {\n promises = insertElement(clone, sibling);\n wrapper.element = clone;\n wrapper.scope = scope;\n scope[itemName] = wrapper.item;\n });\n // ui-scroll-grid apply\n if (adapter.transform) {\n const tdInitializer = wrapper.scope.uiScrollTdInitializer;\n if (tdInitializer && tdInitializer.linking) {\n adapter.transform(wrapper.scope, wrapper.element);\n } else {\n wrapper.scope.uiScrollTdInitializer = {\n onLink: () => adapter.transform(wrapper.scope, wrapper.element),\n scope: wrapper.scope\n };\n }\n }\n return promises;\n }\n\n function updateDOM() {\n let promises = [];\n const toBePrepended = [];\n const toBeRemoved = [];\n const inserted = [];\n\n buffer.forEach((wrapper, i) => {\n switch (wrapper.op) {\n case 'prepend':\n toBePrepended.unshift(wrapper);\n break;\n case 'append':\n insertWrapperContent(wrapper, i);\n wrapper.op = 'none';\n inserted.push(wrapper);\n break;\n case 'insert':\n promises = promises.concat(createElement(wrapper, i, viewport.insertElementAnimated));\n wrapper.op = 'none';\n inserted.push(wrapper);\n break;\n case 'remove':\n toBeRemoved.push(wrapper);\n }\n });\n\n toBeRemoved.forEach((wrapper) => promises = promises.concat(viewport.removeItem(wrapper)));\n\n if (toBePrepended.length)\n toBePrepended.forEach((wrapper) => {\n insertWrapperContent(wrapper);\n wrapper.op = 'none';\n });\n\n buffer.forEach((item, i) => item.scope.$index = buffer.first + i);\n\n return {\n prepended: toBePrepended,\n removed: toBeRemoved,\n inserted: inserted,\n animated: promises\n };\n\n }\n\n function updatePaddings(rid, updates) {\n // schedule another doAdjust after animation completion\n if (updates.animated.length) {\n $q.all(updates.animated).then(() => {\n viewport.adjustPaddings();\n doAdjust(rid);\n });\n } else {\n viewport.adjustPaddings();\n }\n }\n\n function enqueueFetch(rid, updates) {\n if (viewport.shouldLoadBottom()) {\n if (!updates || buffer.effectiveHeight(updates.inserted) > 0) {\n // this means that at least one item appended in the last batch has height > 0\n if (pending.push(true) === 1) {\n adapter.loading(true);\n fetch(rid);\n }\n }\n } else if (viewport.shouldLoadTop()) {\n if ((!updates || buffer.effectiveHeight(updates.prepended) > 0) || pending[0]) {\n // this means that at least one item appended in the last batch has height > 0\n // pending[0] = true means that previous fetch was appending. We need to force at least one prepend\n // BTW there will always be at least 1 element in the pending array because bottom is fetched first\n if (pending.push(false) === 1) {\n adapter.loading(true);\n fetch(rid);\n }\n }\n }\n }\n\n function processUpdates() {\n const updates = updateDOM();\n\n // We need the item bindings to be processed before we can do adjustments\n !$scope.$$phase && !$rootScope.$$phase && $scope.$digest();\n\n updates.inserted.forEach(w => elementRoutines.showElement(w));\n updates.prepended.forEach(w => elementRoutines.showElement(w));\n return updates;\n }\n\n function doAdjust(rid) {\n if (!rid) { // dismiss pending requests\n pending = [];\n rid = ++ridActual;\n }\n\n const updates = processUpdates();\n\n if (isInvalid(rid)) {\n return;\n }\n\n updatePaddings(rid, updates);\n enqueueFetch(rid);\n\n if (!pending.length) {\n adapter.calculateProperties();\n }\n }\n\n function doAdjustAfterFetch(rid) {\n const updates = processUpdates();\n\n 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\t\t__webpack_require__.r(ns);\n \t\tObject.defineProperty(ns, 'default', { enumerable: true, value: value });\n \t\tif(mode & 2 && typeof value != 'string') for(var key in value) __webpack_require__.d(ns, key, function(key) { return value[key]; }.bind(null, key));\n \t\treturn ns;\n \t};\n\n \t// getDefaultExport function for compatibility with non-harmony modules\n \t__webpack_require__.n = function(module) {\n \t\tvar getter = module && module.__esModule ?\n \t\t\tfunction getDefault() { return module['default']; } :\n \t\t\tfunction getModuleExports() { return module; };\n \t\t__webpack_require__.d(getter, 'a', getter);\n \t\treturn getter;\n \t};\n\n \t// Object.prototype.hasOwnProperty.call\n \t__webpack_require__.o = function(object, property) { return Object.prototype.hasOwnProperty.call(object, property); };\n\n \t// __webpack_public_path__\n \t__webpack_require__.p = \"\";\n\n\n \t// Load entry module and return exports\n \treturn __webpack_require__(__webpack_require__.s = 1);\n","/*!\r\n globals: angular, window\r\n List of used element methods available in JQuery but not in JQuery Lite\r\n element.before(elem)\r\n element.height()\r\n element.outerHeight(true)\r\n element.height(value) = only for Top/Bottom padding elements\r\n element.scrollTop()\r\n element.scrollTop(value)\r\n */\r\n\r\nexport default class JQLiteExtras {\r\n\r\n registerFor(element) {\r\n let convertToPx, css, getStyle, isWindow;\r\n // angular implementation blows up if elem is the window\r\n css = angular.element.prototype.css;\r\n\r\n element.prototype.css = function (name, value) {\r\n let self = this;\r\n let elem = self[0];\r\n if (!(!elem || elem.nodeType === 3 || elem.nodeType === 8 || !elem.style)) {\r\n return css.call(self, name, value);\r\n }\r\n };\r\n\r\n // as defined in angularjs v1.0.5\r\n isWindow = (obj) => obj && obj.document && obj.location && obj.alert && obj.setInterval;\r\n\r\n function scrollTo(self, direction, value) {\r\n let elem = self[0];\r\n let [method, prop, preserve] = {\r\n top: [\r\n 'scrollTop',\r\n 'pageYOffset',\r\n 'scrollLeft'\r\n ],\r\n left: [\r\n 'scrollLeft',\r\n 'pageXOffset',\r\n 'scrollTop'\r\n ]\r\n }[direction];\r\n\r\n const isValueDefined = typeof value !== 'undefined';\r\n if (isWindow(elem)) {\r\n if (isValueDefined) {\r\n return elem.scrollTo(self[preserve].call(self), value);\r\n }\r\n return (prop in elem) ? elem[prop] : elem.document.documentElement[method];\r\n } else {\r\n if (isValueDefined) {\r\n elem[method] = value;\r\n }\r\n return elem[method];\r\n }\r\n }\r\n\r\n if (window.getComputedStyle) {\r\n getStyle = (elem) => window.getComputedStyle(elem, null);\r\n convertToPx = (elem, value) => parseFloat(value);\r\n } else {\r\n getStyle = (elem) => elem.currentStyle;\r\n convertToPx = (elem, value) => {\r\n let left, result, rs, rsLeft, style;\r\n let core_pnum = /[+-]?(?:\\d*\\.|)\\d+(?:[eE][+-]?\\d+|)/.source;\r\n let rnumnonpx = new RegExp('^(' + core_pnum + ')(?!px)[a-z%]+$', 'i');\r\n\r\n if (!rnumnonpx.test(value)) {\r\n return parseFloat(value);\r\n }\r\n\r\n // ported from JQuery\r\n style = elem.style;\r\n left = style.left;\r\n rs = elem.runtimeStyle;\r\n rsLeft = rs && rs.left;\r\n if (rs) {\r\n rs.left = style.left;\r\n }\r\n // put in the new values to get a computed style out\r\n style.left = value;\r\n result = style.pixelLeft;\r\n style.left = left;\r\n if (rsLeft) {\r\n rs.left = rsLeft;\r\n }\r\n return result;\r\n };\r\n }\r\n\r\n function getMeasurements(elem, measure) {\r\n let base, borderA, borderB, computedMarginA, computedMarginB, computedStyle, dirA, dirB, marginA, marginB, paddingA, paddingB;\r\n\r\n if (isWindow(elem)) {\r\n base = document.documentElement[{height: 'clientHeight', width: 'clientWidth'}[measure]];\r\n\r\n return {\r\n base: base,\r\n padding: 0,\r\n border: 0,\r\n margin: 0\r\n };\r\n }\r\n\r\n // Start with offset property\r\n [\r\n base,\r\n dirA,\r\n dirB\r\n ] = {\r\n width: [\r\n elem.offsetWidth,\r\n 'Left',\r\n 'Right'\r\n ],\r\n height: [\r\n elem.offsetHeight,\r\n 'Top',\r\n 'Bottom'\r\n ]\r\n }[measure];\r\n\r\n computedStyle = getStyle(elem);\r\n paddingA = convertToPx(elem, computedStyle['padding' + dirA]) || 0;\r\n paddingB = convertToPx(elem, computedStyle['padding' + dirB]) || 0;\r\n borderA = convertToPx(elem, computedStyle['border' + dirA + 'Width']) || 0;\r\n borderB = convertToPx(elem, computedStyle['border' + dirB + 'Width']) || 0;\r\n computedMarginA = computedStyle['margin' + dirA];\r\n computedMarginB = computedStyle['margin' + dirB];\r\n\r\n // I do not care for width for now, so this hack is irrelevant\r\n // if ( !supportsPercentMargin )\r\n // computedMarginA = hackPercentMargin( elem, computedStyle, computedMarginA )\r\n // computedMarginB = hackPercentMargin( elem, computedStyle, computedMarginB )\r\n marginA = convertToPx(elem, computedMarginA) || 0;\r\n marginB = convertToPx(elem, computedMarginB) || 0;\r\n\r\n return {\r\n base: base,\r\n padding: paddingA + paddingB,\r\n border: borderA + borderB,\r\n margin: marginA + marginB\r\n };\r\n }\r\n\r\n function getWidthHeight(elem, direction, measure) {\r\n let computedStyle, result;\r\n\r\n let measurements = getMeasurements(elem, direction);\r\n\r\n if (measurements.base > 0) {\r\n return {\r\n base: measurements.base - measurements.padding - measurements.border,\r\n outer: measurements.base,\r\n outerfull: measurements.base + measurements.margin\r\n }[measure];\r\n }\r\n\r\n // Fall back to computed then uncomputed css if necessary\r\n computedStyle = getStyle(elem);\r\n result = computedStyle[direction];\r\n\r\n if (result < 0 || result === null) {\r\n result = elem.style[direction] || 0;\r\n }\r\n\r\n // Normalize \"\", auto, and prepare for extra\r\n result = parseFloat(result) || 0;\r\n\r\n return {\r\n base: result - measurements.padding - measurements.border,\r\n outer: result,\r\n outerfull: result + measurements.padding + measurements.border + measurements.margin\r\n }[measure];\r\n }\r\n\r\n // define missing methods\r\n return angular.forEach({\r\n before(newElem) {\r\n var children, elem, i, j, parent, ref, self;\r\n self = this;\r\n elem = self[0];\r\n parent = self.parent();\r\n children = parent.contents();\r\n if (children[0] === elem) {\r\n return parent.prepend(newElem);\r\n } else {\r\n for (i = j = 1, ref = children.length - 1; 1 <= ref ? j <= ref : j >= ref; i = 1 <= ref ? ++j : --j) {\r\n if (children[i] === elem) {\r\n angular.element(children[i - 1]).after(newElem);\r\n return;\r\n }\r\n }\r\n throw new Error('invalid DOM structure ' + elem.outerHTML);\r\n }\r\n },\r\n height (value){\r\n var self;\r\n self = this;\r\n if (typeof value !== 'undefined') {\r\n if (angular.isNumber(value)) {\r\n value = value + 'px';\r\n }\r\n return css.call(self, 'height', value);\r\n } else {\r\n return getWidthHeight(this[0], 'height', 'base');\r\n }\r\n },\r\n outerHeight(option) {\r\n return getWidthHeight(this[0], 'height', option ? 'outerfull' : 'outer');\r\n },\r\n outerWidth(option) {\r\n return getWidthHeight(this[0], 'width', option ? 'outerfull' : 'outer');\r\n },\r\n\r\n /*\r\n The offset setter method is not implemented\r\n */\r\n offset(value) {\r\n let docElem, win;\r\n let self = this;\r\n let box = {\r\n top: 0,\r\n left: 0\r\n };\r\n let elem = self[0];\r\n let doc = elem && elem.ownerDocument;\r\n\r\n if (arguments.length) {\r\n if (value === undefined) {\r\n return self;\r\n }\r\n // TODO: implement setter\r\n throw new Error('offset setter method is not implemented');\r\n }\r\n\r\n if (!doc) {\r\n return;\r\n }\r\n\r\n docElem = doc.documentElement;\r\n\r\n // TODO: Make sure it's not a disconnected DOM node\r\n\r\n if (elem.getBoundingClientRect != null) {\r\n box = elem.getBoundingClientRect();\r\n }\r\n\r\n win = doc.defaultView || doc.parentWindow;\r\n\r\n return {\r\n top: box.top + (win.pageYOffset || docElem.scrollTop) - (docElem.clientTop || 0),\r\n left: box.left + (win.pageXOffset || docElem.scrollLeft) - (docElem.clientLeft || 0)\r\n };\r\n },\r\n scrollTop(value) {\r\n return scrollTo(this, 'top', value);\r\n },\r\n scrollLeft(value) {\r\n return scrollTo(this, 'left', value);\r\n }\r\n }, (value, key) => {\r\n if (!element.prototype[key]) {\r\n return element.prototype[key] = value;\r\n }\r\n });\r\n }\r\n\r\n}\r\n","const hideClassToken = 'ng-ui-scroll-hide';\r\n\r\nexport default class ElementRoutines {\r\n\r\n static addCSSRules() {\r\n const selector = '.' + hideClassToken;\r\n const rules = 'display: none';\r\n const sheet = document.styleSheets[0];\r\n let index;\r\n try {\r\n index = sheet.cssRules.length;\r\n } catch (err) {\r\n index = 0;\r\n }\r\n if('insertRule' in sheet) {\r\n sheet.insertRule(selector + '{' + rules + '}', index);\r\n }\r\n else if('addRule' in sheet) {\r\n sheet.addRule(selector, rules, index);\r\n }\r\n }\r\n\r\n constructor($injector, $q) {\r\n this.$animate = ($injector.has && $injector.has('$animate')) ? $injector.get('$animate') : null;\r\n this.isAngularVersionLessThen1_3 = angular.version.major === 1 && angular.version.minor < 3;\r\n this.$q = $q;\r\n }\r\n\r\n hideElement(wrapper) {\r\n wrapper.element.addClass(hideClassToken);\r\n }\r\n\r\n showElement(wrapper) {\r\n wrapper.element.removeClass(hideClassToken);\r\n }\r\n\r\n insertElement(newElement, previousElement) {\r\n previousElement.after(newElement);\r\n return [];\r\n }\r\n\r\n removeElement(wrapper) {\r\n wrapper.element.remove();\r\n wrapper.scope.$destroy();\r\n return [];\r\n }\r\n\r\n insertElementAnimated(newElement, previousElement) {\r\n if (!this.$animate) {\r\n return this.insertElement(newElement, previousElement);\r\n }\r\n\r\n if (this.isAngularVersionLessThen1_3) {\r\n const deferred = this.$q.defer();\r\n // no need for parent - previous element is never null\r\n this.$animate.enter(newElement, null, previousElement, () => deferred.resolve());\r\n\r\n return [deferred.promise];\r\n }\r\n\r\n // no need for parent - previous element is never null\r\n return [this.$animate.enter(newElement, null, previousElement)];\r\n }\r\n\r\n removeElementAnimated(wrapper) {\r\n if (!this.$animate) {\r\n return this.removeElement(wrapper);\r\n }\r\n\r\n if (this.isAngularVersionLessThen1_3) {\r\n const deferred = this.$q.defer();\r\n this.$animate.leave(wrapper.element, () => {\r\n wrapper.scope.$destroy();\r\n return deferred.resolve();\r\n });\r\n\r\n return [deferred.promise];\r\n }\r\n\r\n return [(this.$animate.leave(wrapper.element)).then(() => wrapper.scope.$destroy())];\r\n }\r\n}","export default function ScrollBuffer(elementRoutines, bufferSize, startIndex) {\r\n const buffer = Object.create(Array.prototype);\r\n\r\n angular.extend(buffer, {\r\n size: bufferSize,\r\n\r\n reset(startIndex) {\r\n buffer.remove(0, buffer.length);\r\n buffer.eof = false;\r\n buffer.bof = false;\r\n buffer.first = startIndex;\r\n buffer.next = startIndex;\r\n buffer.minIndex = startIndex;\r\n buffer.maxIndex = startIndex;\r\n buffer.minIndexUser = null;\r\n buffer.maxIndexUser = null;\r\n },\r\n\r\n append(items) {\r\n items.forEach((item) => {\r\n ++buffer.next;\r\n buffer.insert('append', item);\r\n });\r\n buffer.maxIndex = buffer.eof ? buffer.next - 1 : Math.max(buffer.next - 1, buffer.maxIndex);\r\n },\r\n\r\n prepend(items) {\r\n items.reverse().forEach((item) => {\r\n --buffer.first;\r\n buffer.insert('prepend', item);\r\n });\r\n buffer.minIndex = buffer.bof ? buffer.minIndex = buffer.first : Math.min(buffer.first, buffer.minIndex);\r\n },\r\n\r\n /**\r\n * inserts wrapped element in the buffer\r\n * the first argument is either operation keyword (see below) or a number for operation 'insert'\r\n * for insert the number is the index for the buffer element the new one have to be inserted after\r\n * operations: 'append', 'prepend', 'insert', 'remove', 'update', 'none'\r\n */\r\n insert(operation, item, isTop) {\r\n const wrapper = {\r\n item: item\r\n };\r\n\r\n if (operation % 1 === 0) {// it is an insert\r\n wrapper.op = 'insert';\r\n buffer.splice(operation, 0, wrapper);\r\n if(isTop) {\r\n buffer.first--;\r\n }\r\n else {\r\n buffer.next++;\r\n }\r\n } else {\r\n wrapper.op = operation;\r\n switch (operation) {\r\n case 'append':\r\n buffer.push(wrapper);\r\n break;\r\n case 'prepend':\r\n buffer.unshift(wrapper);\r\n break;\r\n }\r\n }\r\n },\r\n\r\n // removes elements from buffer\r\n remove(arg1, arg2) {\r\n if (angular.isNumber(arg1)) {\r\n // removes items from arg1 (including) through arg2 (excluding)\r\n for (let i = arg1; i < arg2; i++) {\r\n elementRoutines.removeElement(buffer[i]);\r\n }\r\n return buffer.splice(arg1, arg2 - arg1);\r\n }\r\n // removes single item(wrapper) from the buffer\r\n buffer.splice(buffer.indexOf(arg1), 1);\r\n if(arg1._op === 'isTop' && buffer.first === this.getAbsMinIndex()) {\r\n this.incrementMinIndex();\r\n }\r\n else {\r\n this.decrementMaxIndex();\r\n }\r\n if(arg1._op === 'isTop') {\r\n buffer.first++;\r\n }\r\n else {\r\n buffer.next--;\r\n }\r\n if(!buffer.length) {\r\n buffer.first = 1;\r\n buffer.next = 1;\r\n }\r\n\r\n return elementRoutines.removeElementAnimated(arg1);\r\n },\r\n\r\n incrementMinIndex() {\r\n if(buffer.minIndexUser !== null) {\r\n if(buffer.minIndex > buffer.minIndexUser) {\r\n buffer.minIndexUser++;\r\n return;\r\n }\r\n if(buffer.minIndex === buffer.minIndexUser) {\r\n buffer.minIndexUser++;\r\n }\r\n }\r\n buffer.minIndex++;\r\n },\r\n\r\n decrementMaxIndex() {\r\n if(buffer.maxIndexUser !== null && buffer.maxIndex <= buffer.maxIndexUser) {\r\n buffer.maxIndexUser--;\r\n }\r\n buffer.maxIndex--;\r\n },\r\n\r\n getAbsMinIndex() {\r\n if(buffer.minIndexUser !== null) {\r\n return Math.min(buffer.minIndexUser, buffer.minIndex);\r\n }\r\n return buffer.minIndex;\r\n },\r\n\r\n getAbsMaxIndex() {\r\n if(buffer.maxIndexUser !== null) {\r\n return Math.max(buffer.maxIndexUser, buffer.maxIndex);\r\n }\r\n return buffer.maxIndex;\r\n },\r\n\r\n effectiveHeight(elements) {\r\n if (!elements.length) {\r\n return 0;\r\n }\r\n let top = Number.MAX_VALUE;\r\n let bottom = Number.NEGATIVE_INFINITY;\r\n elements.forEach((wrapper) => {\r\n if (wrapper.element[0].offsetParent) {\r\n // element style is not display:none\r\n top = Math.min(top, wrapper.element.offset().top);\r\n bottom = Math.max(bottom, wrapper.element.offset().top + wrapper.element.outerHeight(true));\r\n }\r\n });\r\n return Math.max(0, bottom - top);\r\n }\r\n\r\n });\r\n\r\n buffer.reset(startIndex);\r\n\r\n return buffer;\r\n}\r\n","// Can't just extend the Array, due to Babel does not support built-in classes extending\r\n// This solution was taken from https://stackoverflow.com/questions/46897414/es6-class-extends-array-workaround-for-es5-babel-transpile\r\nclass CacheProto {\r\n add(item) {\r\n for (let i = this.length - 1; i >= 0; i--) {\r\n if (this[i].index === item.scope.$index) {\r\n this[i].height = this.rowHeight || item.element.outerHeight();\r\n return;\r\n }\r\n }\r\n this.push({\r\n index: item.scope.$index,\r\n height: this.rowHeight || item.element.outerHeight()\r\n });\r\n this.sort((a, b) => ((a.index < b.index) ? -1 : ((a.index > b.index) ? 1 : 0)));\r\n }\r\n\r\n remove(argument, _isTop) {\r\n const index = argument % 1 === 0 ? argument : argument.scope.$index;\r\n const isTop = argument % 1 === 0 ? _isTop : argument._op === 'isTop';\r\n for (let i = this.length - 1; i >= 0; i--) {\r\n if (this[i].index === index) {\r\n this.splice(i, 1);\r\n break;\r\n }\r\n }\r\n if(!isTop) {\r\n for (let i = this.length - 1; i >= 0; i--) {\r\n if (this[i].index > index) {\r\n this[i].index--;\r\n }\r\n }\r\n }\r\n }\r\n\r\n clear() {\r\n this.length = 0;\r\n }\r\n}\r\n\r\nfunction Cache() {\r\n const instance = [];\r\n instance.push.apply(instance, arguments);\r\n Object.setPrototypeOf(instance, Cache.prototype);\r\n return instance;\r\n}\r\nCache.prototype = Object.create(Array.prototype);\r\nObject.getOwnPropertyNames(CacheProto.prototype).forEach(methodName =>\r\n Cache.prototype[methodName] = CacheProto.prototype[methodName]\r\n);\r\n\r\nfunction generateElement(template) {\r\n if(template.nodeType !== Node.ELEMENT_NODE) {\r\n throw new Error('ui-scroll directive requires an Element node for templating the view');\r\n }\r\n let element;\r\n switch (template.tagName.toLowerCase()) {\r\n case 'dl':\r\n throw new Error(`ui-scroll directive does not support <${template.tagName}> as a repeating tag: ${template.outerHTML}`);\r\n case 'tr':\r\n let table = angular.element('
    ');\r\n element = table.find('tr');\r\n break;\r\n case 'li':\r\n element = angular.element('
  • ');\r\n break;\r\n default:\r\n element = angular.element('
    ');\r\n }\r\n return element;\r\n}\r\n\r\nclass Padding {\r\n constructor(template,rowHeight) {\r\n this.element = generateElement(template);\r\n this.cache = new Cache();\r\n this.cache.rowHeight = rowHeight;\r\n }\r\n\r\n height() {\r\n // When called wit a parameter, this sets the height of the padding\r\n return this.element.height.apply(this.element, arguments);\r\n }\r\n}\r\n\r\nexport default Padding;","import Padding from './padding';\r\n\r\nexport default function Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding, rowHeight) {\r\n let topPadding = null;\r\n let bottomPadding = null;\r\n const viewport = viewportController && viewportController.viewport ? viewportController.viewport : angular.element(window);\r\n const container = viewportController && viewportController.container ? viewportController.container : undefined;\r\n const scope = viewportController && viewportController.scope ? viewportController.scope : $rootScope;\r\n\r\n viewport.css({\r\n 'overflow-anchor': 'none',\r\n 'overflow-y': 'auto',\r\n 'display': 'block'\r\n });\r\n\r\n function bufferPadding() {\r\n return viewport.outerHeight() * padding; // some extra space to initiate preload\r\n }\r\n\r\n angular.extend(viewport, {\r\n getScope() {\r\n return scope;\r\n },\r\n\r\n createPaddingElements(template) {\r\n topPadding = new Padding(template,rowHeight);\r\n bottomPadding = new Padding(template,rowHeight);\r\n element.before(topPadding.element);\r\n element.after(bottomPadding.element);\r\n topPadding.height(0);\r\n bottomPadding.height(0);\r\n },\r\n\r\n applyContainerStyle() {\r\n if (!container) {\r\n return true;\r\n }\r\n if(container !== viewport) {\r\n viewport.css('height', window.getComputedStyle(container[0]).height);\r\n }\r\n return viewport.height() > 0;\r\n },\r\n\r\n bottomDataPos() {\r\n let scrollHeight = viewport[0].scrollHeight;\r\n scrollHeight = scrollHeight != null ? scrollHeight : viewport[0].document.documentElement.scrollHeight;\r\n return scrollHeight - bottomPadding.height();\r\n },\r\n\r\n topDataPos() {\r\n return topPadding.height();\r\n },\r\n\r\n bottomVisiblePos() {\r\n return viewport.scrollTop() + viewport.outerHeight();\r\n },\r\n\r\n topVisiblePos() {\r\n return viewport.scrollTop();\r\n },\r\n\r\n insertElement(e, sibling) {\r\n return elementRoutines.insertElement(e, sibling || topPadding.element);\r\n },\r\n\r\n insertElementAnimated(e, sibling) {\r\n return elementRoutines.insertElementAnimated(e, sibling || topPadding.element);\r\n },\r\n\r\n shouldLoadBottom() {\r\n return !buffer.eof && viewport.bottomDataPos() < viewport.bottomVisiblePos() + bufferPadding();\r\n },\r\n\r\n clipBottom() {\r\n // clip the invisible items off the bottom\r\n let overage = 0;\r\n let overageHeight = 0;\r\n let itemHeight = 0;\r\n let emptySpaceHeight = viewport.bottomDataPos() - viewport.bottomVisiblePos() - bufferPadding();\r\n\r\n // Simple calculation now using the fixed rowHeight if available.\r\n // Might be optimized if needed\r\n for (let i = buffer.length - 1; i >= 0; i--) {\r\n itemHeight = rowHeight ? rowHeight : buffer[i].element.outerHeight(true);\r\n if (overageHeight + itemHeight > emptySpaceHeight) {\r\n break;\r\n }\r\n bottomPadding.cache.add(buffer[i]);\r\n overageHeight += itemHeight;\r\n overage++;\r\n }\r\n\r\n if (overage > 0) {\r\n buffer.eof = false;\r\n buffer.remove(buffer.length - overage, buffer.length);\r\n buffer.next -= overage;\r\n viewport.adjustPaddings();\r\n }\r\n },\r\n\r\n shouldLoadTop() {\r\n return !buffer.bof && (viewport.topDataPos() > viewport.topVisiblePos() - bufferPadding());\r\n },\r\n\r\n clipTop() {\r\n // clip the invisible items off the top\r\n let overage = 0;\r\n let overageHeight = 0;\r\n let itemHeight = 0;\r\n let emptySpaceHeight = viewport.topVisiblePos() - viewport.topDataPos() - bufferPadding();\r\n\r\n // Simple calculation now using the fixed rowHeight if available.\r\n // Might be optimized if needed\r\n for (let i = 0; i < buffer.length; i++) {\r\n itemHeight = rowHeight ? rowHeight : buffer[i].element.outerHeight(true);\r\n if (overageHeight + itemHeight > emptySpaceHeight) {\r\n break;\r\n }\r\n topPadding.cache.add(buffer[i]);\r\n overageHeight += itemHeight;\r\n overage++;\r\n }\r\n\r\n if (overage > 0) {\r\n // we need to adjust top padding element before items are removed from top\r\n // to avoid strange behaviour of scroll bar during remove top items when we are at the very bottom\r\n topPadding.height(topPadding.height() + overageHeight);\r\n buffer.bof = false;\r\n buffer.remove(0, overage);\r\n buffer.first += overage;\r\n }\r\n },\r\n\r\n adjustPaddings() {\r\n if (!buffer.length) {\r\n return;\r\n }\r\n\r\n // precise heights calculation based on items that are in buffer or that were in buffer once\r\n // outerHeight(true) == [height+ padding + border + margin]\r\n // The calculation bellow can certainly be replaced by:\r\n // const visibleItemsHeight = rowHeight ? rowHeight * buffer.length\r\n // : buffer.reduce((summ, item) => summ + item.element.outerHeight(true), 0);\r\n const visibleItemsHeight = buffer.reduce((summ, item) => summ + (rowHeight ? rowHeight : item.element.outerHeight(true)), 0);\r\n\r\n // Sinlarly, the calculation of the paddings (top & bottom) can certanly be optimizez\r\n let topPaddingHeight = 0, topCount = 0;\r\n topPadding.cache.forEach(item => {\r\n if(item.index < buffer.first) {\r\n topPaddingHeight += item.height; // outerHeight(true) is actually stored in this data member\r\n topCount++;\r\n }\r\n });\r\n\r\n let bottomPaddingHeight = 0, bottomCount = 0;\r\n bottomPadding.cache.forEach(item => {\r\n if(item.index >= buffer.next) {\r\n bottomPaddingHeight += item.height; // outerHeight(true) is actually stored in this data member\r\n bottomCount++;\r\n }\r\n });\r\n\r\n const totalHeight = visibleItemsHeight + topPaddingHeight + bottomPaddingHeight;\r\n const averageItemHeight = totalHeight / (topCount + bottomCount + buffer.length);\r\n\r\n // average heights calculation, items that have never been reached\r\n let adjustTopPadding = buffer.minIndexUser !== null && buffer.minIndex > buffer.minIndexUser;\r\n let adjustBottomPadding = buffer.maxIndexUser !== null && buffer.maxIndex < buffer.maxIndexUser;\r\n let topPaddingHeightAdd = adjustTopPadding ? (buffer.minIndex - buffer.minIndexUser) * averageItemHeight : 0;\r\n let bottomPaddingHeightAdd = adjustBottomPadding ? (buffer.maxIndexUser - buffer.maxIndex) * averageItemHeight : 0;\r\n\r\n // paddings combine adjustment\r\n topPadding.height(topPaddingHeight + topPaddingHeightAdd);\r\n bottomPadding.height(bottomPaddingHeight + bottomPaddingHeightAdd);\r\n },\r\n\r\n onAfterMinIndexSet(topPaddingHeightOld) {\r\n // additional scrollTop adjustment in case of datasource.minIndex external set\r\n if (buffer.minIndexUser !== null && buffer.minIndex > buffer.minIndexUser) {\r\n let diff = topPadding.height() - topPaddingHeightOld;\r\n viewport.scrollTop(viewport.scrollTop() + diff);\r\n while((diff -= viewport.scrollTop()) > 0) {\r\n bottomPadding.height(bottomPadding.height() + diff);\r\n viewport.scrollTop(viewport.scrollTop() + diff);\r\n }\r\n }\r\n },\r\n\r\n onAfterPrepend(updates) {\r\n if (!updates.prepended.length)\r\n return;\r\n const height = buffer.effectiveHeight(updates.prepended);\r\n const paddingHeight = topPadding.height() - height;\r\n if (paddingHeight >= 0) {\r\n topPadding.height(paddingHeight);\r\n }\r\n else {\r\n topPadding.height(0);\r\n viewport.scrollTop(viewport.scrollTop() - paddingHeight);\r\n }\r\n },\r\n\r\n resetTopPadding() {\r\n topPadding.height(0);\r\n topPadding.cache.clear();\r\n },\r\n\r\n resetBottomPadding() {\r\n bottomPadding.height(0);\r\n bottomPadding.cache.clear();\r\n },\r\n\r\n removeCacheItem(item, isTop) {\r\n topPadding.cache.remove(item, isTop);\r\n bottomPadding.cache.remove(item, isTop);\r\n },\r\n\r\n removeItem(item) {\r\n this.removeCacheItem(item);\r\n return buffer.remove(item);\r\n }\r\n });\r\n\r\n return viewport;\r\n}\r\n","class Adapter {\r\n\r\n constructor($scope, $parse, $attr, viewport, buffer, doAdjust, reload) {\r\n this.$parse = $parse;\r\n this.$attr = $attr;\r\n this.viewport = viewport;\r\n this.buffer = buffer;\r\n\r\n this.doAdjust = doAdjust;\r\n this.reload = reload;\r\n\r\n this.isLoading = false;\r\n this.disabled = false;\r\n\r\n const viewportScope = viewport.getScope();\r\n this.startScope = viewportScope.$parent ? viewportScope : $scope;\r\n\r\n this.publicContext = {};\r\n this.assignAdapter($attr.adapter);\r\n this.generatePublicContext();\r\n }\r\n\r\n assignAdapter(adapterAttr) {\r\n if (!adapterAttr || !(adapterAttr = adapterAttr.replace(/^\\s+|\\s+$/gm, ''))) {\r\n return;\r\n }\r\n let adapterOnScope;\r\n\r\n try {\r\n this.$parse(adapterAttr).assign(this.startScope, {});\r\n adapterOnScope = this.$parse(adapterAttr)(this.startScope);\r\n }\r\n catch (error) {\r\n error.message = `Angular ui-scroll Adapter assignment exception.\\n` +\r\n `Can't parse \"${adapterAttr}\" expression.\\n` +\r\n error.message;\r\n throw error;\r\n }\r\n\r\n angular.extend(adapterOnScope, this.publicContext);\r\n this.publicContext = adapterOnScope;\r\n }\r\n\r\n generatePublicContext() {\r\n // these methods will be accessible out of ui-scroll via user defined adapter\r\n const publicMethods = ['reload', 'applyUpdates', 'append', 'prepend', 'isBOF', 'isEOF', 'isEmpty'];\r\n for (let i = publicMethods.length - 1; i >= 0; i--) {\r\n this.publicContext[publicMethods[i]] = this[publicMethods[i]].bind(this);\r\n }\r\n\r\n // these read-only props will be accessible out of ui-scroll via user defined adapter\r\n const publicProps = ['isLoading', 'topVisible', 'topVisibleElement', 'topVisibleScope', 'bottomVisible', 'bottomVisibleElement', 'bottomVisibleScope'];\r\n for (let i = publicProps.length - 1; i >= 0; i--) {\r\n let property, attr = this.$attr[publicProps[i]];\r\n Object.defineProperty(this, publicProps[i], {\r\n get: () => property,\r\n set: (value) => {\r\n property = value;\r\n this.publicContext[publicProps[i]] = value;\r\n if (attr) {\r\n this.$parse(attr).assign(this.startScope, value);\r\n }\r\n }\r\n });\r\n }\r\n\r\n // non-read-only public property\r\n Object.defineProperty(this.publicContext, 'disabled', {\r\n get: () => this.disabled,\r\n set: (value) => (!(this.disabled = value)) ? this.doAdjust() : null\r\n });\r\n }\r\n\r\n loading(value) {\r\n this.isLoading = value;\r\n }\r\n\r\n isBOF() {\r\n return this.buffer.bof;\r\n }\r\n\r\n isEOF() {\r\n return this.buffer.eof;\r\n }\r\n\r\n isEmpty() {\r\n return !this.buffer.length;\r\n }\r\n\r\n append(newItems) {\r\n this.buffer.append(newItems);\r\n this.doAdjust();\r\n this.viewport.clipTop();\r\n this.viewport.clipBottom();\r\n }\r\n\r\n prepend(newItems) {\r\n this.buffer.prepend(newItems);\r\n this.doAdjust();\r\n this.viewport.clipTop();\r\n this.viewport.clipBottom();\r\n }\r\n\r\n applyUpdates(arg1, arg2) {\r\n if (typeof arg1 === 'function') {\r\n this.applyUpdatesFunc(arg1);\r\n } else {\r\n this.applyUpdatesIndex(arg1, arg2);\r\n }\r\n this.doAdjust();\r\n }\r\n\r\n applyUpdatesFunc(cb) {\r\n this.buffer.slice(0).forEach((wrapper) => {\r\n // we need to do it on the buffer clone, because buffer content\r\n // may change as we iterate through\r\n this.applyUpdate(wrapper, cb(wrapper.item, wrapper.scope, wrapper.element));\r\n });\r\n }\r\n\r\n applyUpdatesIndex(index, newItems) {\r\n if (index % 1 !== 0) {\r\n throw new Error('applyUpdates - ' + index + ' is not a valid index (should be an integer)');\r\n }\r\n const _index = index - this.buffer.first;\r\n\r\n // apply updates only within buffer\r\n if (_index >= 0 && _index < this.buffer.length) {\r\n this.applyUpdate(this.buffer[_index], newItems);\r\n }\r\n // out-of-buffer case: deletion may affect Paddings\r\n else if(index >= this.buffer.getAbsMinIndex() && index <= this.buffer.getAbsMaxIndex()) {\r\n if(angular.isArray(newItems) && !newItems.length) {\r\n this.viewport.removeCacheItem(index, index === this.buffer.minIndex);\r\n if(index === this.buffer.getAbsMinIndex()) {\r\n this.buffer.incrementMinIndex();\r\n }\r\n else {\r\n this.buffer.decrementMaxIndex();\r\n }\r\n }\r\n }\r\n }\r\n\r\n applyUpdate(wrapper, newItems) {\r\n if (!angular.isArray(newItems)) {\r\n return;\r\n }\r\n let position = this.buffer.indexOf(wrapper);\r\n if (!newItems.reverse().some(newItem => newItem === wrapper.item)) {\r\n wrapper.op = 'remove';\r\n if(position === 0 && !newItems.length) {\r\n wrapper._op = 'isTop'; // to catch \"first\" edge case on remove\r\n }\r\n }\r\n newItems.forEach((newItem) => {\r\n if (newItem === wrapper.item) {\r\n position--;\r\n } else {\r\n // 3 parameter (isTop) is to catch \"first\" edge case on insert\r\n this.buffer.insert(position + 1, newItem, position === -1);\r\n }\r\n });\r\n }\r\n\r\n calculateProperties() {\r\n let rowTop = null, topHeight = 0;\r\n let topDone = false, bottomDone = false;\r\n const length = this.buffer.length;\r\n\r\n for (let i = 0; i < length; i++) {\r\n const item = this.buffer[i];\r\n const itemTop = item.element.offset().top;\r\n\r\n if (rowTop !== itemTop) { // a new row condition\r\n const itemHeight = item.element.outerHeight(true);\r\n const top = this.viewport.topDataPos() + topHeight + itemHeight;\r\n\r\n if (!topDone && top > this.viewport.topVisiblePos()) {\r\n topDone = true;\r\n this['topVisible'] = item.item;\r\n this['topVisibleElement'] = item.element;\r\n this['topVisibleScope'] = item.scope;\r\n }\r\n if (!bottomDone && (top >= this.viewport.bottomVisiblePos() || (i === length - 1 && this.isEOF()))) {\r\n bottomDone = true;\r\n this['bottomVisible'] = item.item;\r\n this['bottomVisibleElement'] = item.element;\r\n this['bottomVisibleScope'] = item.scope;\r\n }\r\n topHeight += itemHeight;\r\n }\r\n rowTop = itemTop;\r\n\r\n if (topDone && bottomDone) {\r\n break;\r\n }\r\n }\r\n }\r\n\r\n}\r\n\r\nexport default Adapter;\r\n","import JQLiteExtras from './modules/jqLiteExtras';\nimport ElementRoutines from './modules/elementRoutines.js';\nimport ScrollBuffer from './modules/buffer.js';\nimport Viewport from './modules/viewport.js';\nimport Adapter from './modules/adapter.js';\n\nangular.module('ui.scroll', [])\n\n .constant('JQLiteExtras', JQLiteExtras)\n .run(['JQLiteExtras', (JQLiteExtras) => {\n !window.jQuery ? (new JQLiteExtras()).registerFor(angular.element) : null;\n ElementRoutines.addCSSRules();\n }])\n\n .directive('uiScrollViewport', function () {\n return {\n restrict: 'A',\n controller: [\n '$scope',\n '$element',\n function (scope, element) {\n this.container = element;\n this.viewport = element;\n this.scope = scope;\n\n angular.forEach(element.children(), child => {\n if (child.tagName.toLowerCase() === 'tbody') {\n this.viewport = angular.element(child);\n }\n });\n\n return this;\n }\n ]\n };\n })\n\n .directive('uiScroll', [\n '$log',\n '$injector',\n '$rootScope',\n '$timeout',\n '$interval',\n '$q',\n '$parse',\n function (console, $injector, $rootScope, $timeout, $interval, $q, $parse) {\n\n return {\n require: ['?^uiScrollViewport'],\n restrict: 'A',\n transclude: 'element',\n priority: 1000,\n terminal: true,\n link: link\n };\n\n function link($scope, element, $attr, controllers, linker) {\n const match = $attr.uiScroll.match(/^\\s*(\\w+)\\s+in\\s+([(\\w|\\$)\\.]+)\\s*$/);\n if (!match) {\n throw new Error('Expected uiScroll in form of \\'_item_ in _datasource_\\' but got \\'' + $attr.uiScroll + '\\'');\n }\n\n function parseNumber(value, defaultValue, isFloat) {\n if (!isFloat) {\n value = value === null ? defaultValue : Math.floor(value);\n }\n return isNaN(value) ? defaultValue : value;\n }\n\n function parseNumericAttr(value, defaultValue, isFloat) {\n const result = $parse(value)($scope);\n return parseNumber(result, defaultValue, isFloat);\n }\n\n const BUFFER_MIN = 3; // Minimum size of the data source request\n const BUFFER_DEFAULT = 10; // Default datasource request size\n const PADDING_MIN = 0.3; // Mininum # of rows in the padding area\n const PADDING_DEFAULT = 0.5; // Default # of rows in the padding area\n const START_INDEX_DEFAULT = 1; // Default start index when requestng the first data block\n const MAX_VIEWPORT_DELAY = 500; // Max time wait (ms) to get the viewport with an height>0\n const VIEWPORT_POLLING_INTERVAL = 50; // Interval used to check the initial viewport height\n\n let datasource = null;\n const itemName = match[1]; // Name of the index variable to publish\n const datasourceName = match[2]; // Name of the datasource to request the rows from\n const viewportController = controllers[0]; // ViewportController, as specified in the require option (http://websystique.com/angularjs/angularjs-custom-directives-controllers-require-option-guide/)\n const bufferSize = Math.max(BUFFER_MIN, parseNumericAttr($attr.bufferSize, BUFFER_DEFAULT)); \n const padding = Math.max(PADDING_MIN, parseNumericAttr($attr.padding, PADDING_DEFAULT, true));\n let startIndex = parseNumericAttr($attr.startIndex, START_INDEX_DEFAULT);\n\n // PHIL: Provide a fixed row height\n // \n const rowHeight = parseNumericAttr($attr.rowheight,null,false);\n\n // Revision IDs\n // \n let ridActual = 0; // current data revision id\n let pending = [];\n\n const elementRoutines = new ElementRoutines($injector, $q);\n const buffer = new ScrollBuffer(elementRoutines, bufferSize, startIndex);\n const viewport = new Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding, rowHeight);\n const adapter = new Adapter($scope, $parse, $attr, viewport, buffer, doAdjust, reload);\n\n if (viewportController) {\n viewportController.adapter = adapter;\n }\n\n const isDatasourceValid = () =>\n Object.prototype.toString.call(datasource) === '[object Object]' && typeof datasource.get === 'function';\n\n datasource = $parse(datasourceName)($scope); // try to get datasource on scope\n if (!isDatasourceValid()) {\n datasource = $injector.get(datasourceName); // try to inject datasource as service\n if (!isDatasourceValid()) {\n throw new Error(datasourceName + ' is not a valid datasource');\n }\n }\n\n let onRenderHandlers = [];\n function onRenderHandlersRunner() {\n onRenderHandlers.forEach(handler => handler.run());\n onRenderHandlers = [];\n }\n function persistDatasourceIndex(datasource, propName) {\n let getter;\n // need to postpone min/maxIndexUser processing if the view is empty\n if(angular.isNumber(datasource[propName])) {\n getter = datasource[propName];\n if(angular.isNumber(getter)) {\n onRenderHandlers = onRenderHandlers.filter(handler => handler.id !== propName);\n onRenderHandlers.push({\n id: propName,\n run: () => datasource[propName] = getter\n });\n }\n }\n }\n\n function defineDatasourceIndex(datasource, propName, propUserName) {\n const descriptor = Object.getOwnPropertyDescriptor(datasource, propName);\n if (descriptor && (descriptor.set || descriptor.get)) {\n return;\n }\n let getter;\n persistDatasourceIndex(datasource, propName);\n Object.defineProperty(datasource, propName, {\n set: (value) => {\n getter = value;\n if(pending.length && !buffer.length) {\n persistDatasourceIndex(datasource, propName);\n return;\n }\n buffer[propUserName] = value;\n const topPaddingHeightOld = viewport.topDataPos();\n viewport.adjustPaddings();\n if (propName === 'minIndex') {\n viewport.onAfterMinIndexSet(topPaddingHeightOld);\n }\n },\n get: () => getter\n });\n }\n\n defineDatasourceIndex(datasource, 'minIndex', 'minIndexUser');\n defineDatasourceIndex(datasource, 'maxIndex', 'maxIndexUser');\n\n const fetchNext = (datasource.get.length !== 2) ?\n (success) => datasource.get(buffer.next, bufferSize, success) :\n (success) => {\n datasource.get({\n index: buffer.next,\n append: buffer.length ? buffer[buffer.length - 1].item : void 0,\n count: bufferSize\n }, success);\n };\n\n const fetchPrevious = (datasource.get.length !== 2) ?\n (success) => datasource.get(buffer.first - bufferSize, bufferSize, success) :\n (success) => {\n datasource.get({\n index: buffer.first - bufferSize,\n prepend: buffer.length ? buffer[0].item : void 0,\n count: bufferSize\n }, success);\n };\n\n const initialize = () => {\n let tryCount = 0;\n if(!viewport.applyContainerStyle()) {\n const timer = $interval(() => {\n tryCount++;\n if(viewport.applyContainerStyle()) {\n $interval.cancel(timer);\n doAdjust();\n }\n if(tryCount * VIEWPORT_POLLING_INTERVAL >= MAX_VIEWPORT_DELAY) {\n $interval.cancel(timer);\n throw Error(`ui-scroll directive requires a viewport with non-zero height in ${MAX_VIEWPORT_DELAY}ms`);\n }\n }, VIEWPORT_POLLING_INTERVAL);\n }\n else {\n doAdjust();\n }\n };\n\n /**\n * Build padding elements\n *\n * Calling linker is the only way I found to get access to the tag name of the template\n * to prevent the directive scope from pollution a new scope is created and destroyed\n * right after the builder creation is completed\n */\n linker((clone, scope) => {\n viewport.createPaddingElements(clone[0]);\n // we do not include the clone in the DOM. It means that the nested directives will not\n // be able to reach the parent directives, but in this case it is intentional because we\n // created the clone to access the template tag name\n scope.$destroy();\n clone.remove();\n });\n\n $scope.$on('$destroy', () => {\n unbindEvents();\n viewport.unbind('mousewheel', wheelHandler);\n });\n\n viewport.bind('mousewheel', wheelHandler);\n\n initialize();\n\n /* Private function definitions */\n\n function isInvalid(rid) {\n return (rid && rid !== ridActual) || $scope.$$destroyed;\n }\n\n function bindEvents() {\n viewport.bind('resize', resizeAndScrollHandler);\n viewport.bind('scroll', resizeAndScrollHandler);\n }\n\n function unbindEvents() {\n viewport.unbind('resize', resizeAndScrollHandler);\n viewport.unbind('scroll', resizeAndScrollHandler);\n }\n\n function reload() {\n viewport.resetTopPadding();\n viewport.resetBottomPadding();\n if (arguments.length) {\n startIndex = parseNumber(arguments[0], START_INDEX_DEFAULT, false);\n }\n buffer.reset(startIndex);\n persistDatasourceIndex(datasource, 'minIndex');\n persistDatasourceIndex(datasource, 'maxIndex');\n doAdjust();\n }\n\n function isElementVisible(wrapper) {\n if(rowHeight) {\n return true;\n }\n return wrapper.element.height() && wrapper.element[0].offsetParent;\n }\n\n function visibilityWatcher(wrapper) {\n if (isElementVisible(wrapper)) {\n buffer.forEach((item) => {\n if (typeof item.unregisterVisibilityWatcher === 'function') {\n item.unregisterVisibilityWatcher();\n delete item.unregisterVisibilityWatcher;\n }\n });\n if (!pending.length) {\n $timeout(() => doAdjust());\n }\n }\n }\n\n function insertWrapperContent(wrapper, insertAfter) {\n createElement(wrapper, insertAfter, viewport.insertElement);\n if (!isElementVisible(wrapper)) {\n wrapper.unregisterVisibilityWatcher = wrapper.scope.$watch(() => visibilityWatcher(wrapper));\n }\n elementRoutines.hideElement(wrapper); // hide inserted elements before data binding\n }\n\n function createElement(wrapper, insertAfter, insertElement) {\n let promises = null;\n const sibling = (insertAfter > 0) ? buffer[insertAfter - 1].element : undefined;\n linker((clone, scope) => {\n promises = insertElement(clone, sibling);\n wrapper.element = clone;\n wrapper.scope = scope;\n scope[itemName] = wrapper.item;\n });\n // ui-scroll-grid apply\n if (adapter.transform) {\n const tdInitializer = wrapper.scope.uiScrollTdInitializer;\n if (tdInitializer && tdInitializer.linking) {\n adapter.transform(wrapper.scope, wrapper.element);\n } else {\n wrapper.scope.uiScrollTdInitializer = {\n onLink: () => adapter.transform(wrapper.scope, wrapper.element),\n scope: wrapper.scope\n };\n }\n }\n return promises;\n }\n\n function updateDOM() {\n let promises = [];\n const toBePrepended = [];\n const toBeRemoved = [];\n const inserted = [];\n\n buffer.forEach((wrapper, i) => {\n switch (wrapper.op) {\n case 'prepend':\n toBePrepended.unshift(wrapper);\n break;\n case 'append':\n insertWrapperContent(wrapper, i);\n wrapper.op = 'none';\n inserted.push(wrapper);\n break;\n case 'insert':\n promises = promises.concat(createElement(wrapper, i, viewport.insertElementAnimated));\n wrapper.op = 'none';\n inserted.push(wrapper);\n break;\n case 'remove':\n toBeRemoved.push(wrapper);\n }\n });\n\n toBeRemoved.forEach((wrapper) => promises = promises.concat(viewport.removeItem(wrapper)));\n\n if (toBePrepended.length)\n toBePrepended.forEach((wrapper) => {\n insertWrapperContent(wrapper);\n wrapper.op = 'none';\n });\n\n buffer.forEach((item, i) => item.scope.$index = buffer.first + i);\n\n return {\n prepended: toBePrepended,\n removed: toBeRemoved,\n inserted: inserted,\n animated: promises\n };\n\n }\n\n // Adjust the viewport paddings\n // \n function updatePaddings(rid, updates) {\n // schedule another doAdjust after animation completion\n if (updates.animated.length) {\n $q.all(updates.animated).then(() => {\n viewport.adjustPaddings();\n doAdjust(rid);\n });\n } else {\n viewport.adjustPaddings();\n }\n }\n\n function enqueueFetch(rid, updates) {\n if (viewport.shouldLoadBottom()) {\n if (!updates || buffer.effectiveHeight(updates.inserted) > 0) {\n // this means that at least one item appended in the last batch has height > 0\n if (pending.push(true) === 1) {\n adapter.loading(true);\n fetch(rid);\n }\n }\n } else if (viewport.shouldLoadTop()) {\n if ((!updates || buffer.effectiveHeight(updates.prepended) > 0) || pending[0]) {\n // this means that at least one item appended in the last batch has height > 0\n // pending[0] = true means that previous fetch was appending. We need to force at least one prepend\n // BTW there will always be at least 1 element in the pending array because bottom is fetched first\n if (pending.push(false) === 1) {\n adapter.loading(true);\n fetch(rid);\n }\n }\n }\n }\n\n function processUpdates() {\n const updates = updateDOM();\n\n // We need the item bindings to be processed before we can do adjustments\n !$scope.$$phase && !$rootScope.$$phase && $scope.$digest();\n\n updates.inserted.forEach(w => elementRoutines.showElement(w));\n updates.prepended.forEach(w => elementRoutines.showElement(w));\n return updates;\n }\n\n function doAdjust(rid) {\n if (!rid) { // dismiss pending requests\n pending = [];\n rid = ++ridActual;\n }\n\n const updates = processUpdates();\n\n if (isInvalid(rid)) {\n return;\n }\n\n updatePaddings(rid, updates);\n enqueueFetch(rid);\n\n if (!pending.length) {\n adapter.calculateProperties();\n }\n }\n\n function doAdjustAfterFetch(rid) {\n const updates = processUpdates();\n\n viewport.onAfterPrepend(updates);\n\n if (isInvalid(rid)) {\n return;\n }\n\n updatePaddings(rid, updates);\n onRenderHandlersRunner();\n enqueueFetch(rid, updates);\n pending.shift();\n\n if (pending.length)\n fetch(rid);\n else {\n adapter.loading(false);\n bindEvents();\n adapter.calculateProperties();\n }\n }\n\n function fetch(rid) {\n if (pending[0]) {// scrolling down\n if (buffer.length && !viewport.shouldLoadBottom()) {\n doAdjustAfterFetch(rid);\n } else {\n fetchNext((result) => {\n if (isInvalid(rid)) {\n return;\n }\n\n if (result.length < bufferSize) {\n buffer.eof = true;\n }\n\n if (result.length > 0) {\n viewport.clipTop();\n buffer.append(result);\n }\n\n doAdjustAfterFetch(rid);\n });\n }\n } else { // scrolling up\n if (buffer.length && !viewport.shouldLoadTop()) {\n doAdjustAfterFetch(rid);\n } else {\n fetchPrevious((result) => {\n if (isInvalid(rid)) {\n return;\n }\n\n if (result.length < bufferSize) {\n buffer.bof = true;\n // log 'bof is reached'\n }\n\n if (result.length > 0) {\n if (buffer.length) {\n viewport.clipBottom();\n }\n buffer.prepend(result);\n }\n\n doAdjustAfterFetch(rid);\n });\n }\n }\n }\n\n function resizeAndScrollHandler() {\n if (!$rootScope.$$phase && !adapter.isLoading && !adapter.disabled) {\n\n enqueueFetch(ridActual);\n\n if (pending.length) {\n unbindEvents();\n } else {\n adapter.calculateProperties();\n if(!rowHeight) {\n // The digest is forced to calculate the height, which is not necessary when the height is knowm\n !$scope.$$phase && $scope.$digest();\n }\n }\n }\n }\n\n function wheelHandler(event) {\n if (!adapter.disabled) {\n const scrollTop = viewport[0].scrollTop;\n const yMax = viewport[0].scrollHeight - viewport[0].clientHeight;\n\n if ((scrollTop === 0 && !buffer.bof) || (scrollTop === yMax && !buffer.eof)) {\n event.preventDefault();\n }\n }\n }\n }\n\n }\n ]);\n"],"sourceRoot":""} \ No newline at end of file diff --git a/package-lock.json b/package-lock.json index 5cac9765..c572d963 100644 --- a/package-lock.json +++ b/package-lock.json @@ -3288,8 +3288,7 @@ "version": "2.1.1", "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-2.1.1.tgz", "integrity": "sha1-w7M6te42DYbg5ijwRorn7yfWVN8=", - "dev": true, - "optional": true + "dev": true }, "aproba": { "version": "1.2.0", @@ -3313,15 +3312,13 @@ "version": "1.0.0", "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.0.tgz", "integrity": "sha1-ibTRmasr7kneFk6gK4nORi1xt2c=", - "dev": true, - "optional": true + "dev": true }, "brace-expansion": { "version": "1.1.11", "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.11.tgz", "integrity": "sha512-iCuPHDFgrHX7H2vEI/5xpz07zSHB00TpugqhmYtVmMO6518mCuRMoOYFldEBl0g187ufozdaHgWKcYFb61qGiA==", "dev": true, - "optional": true, "requires": { "balanced-match": "^1.0.0", "concat-map": "0.0.1" @@ -3338,22 +3335,19 @@ "version": "1.1.0", "resolved": "https://registry.npmjs.org/code-point-at/-/code-point-at-1.1.0.tgz", "integrity": "sha1-DQcLTQQ6W+ozovGkDi7bPZpMz3c=", - "dev": true, - "optional": true + "dev": true }, "concat-map": { "version": "0.0.1", "resolved": "https://registry.npmjs.org/concat-map/-/concat-map-0.0.1.tgz", "integrity": "sha1-2Klr13/Wjfd5OnMDajug1UBdR3s=", - "dev": true, - "optional": true + "dev": true }, "console-control-strings": { "version": "1.1.0", "resolved": "https://registry.npmjs.org/console-control-strings/-/console-control-strings-1.1.0.tgz", "integrity": "sha1-PXz0Rk22RG6mRL9LOVB/mFEAjo4=", - "dev": true, - "optional": true + "dev": true }, "core-util-is": { "version": "1.0.2", @@ -3484,8 +3478,7 @@ "version": "2.0.3", "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.3.tgz", "integrity": "sha1-Yzwsg+PaQqUC9SRmAiSA9CCCYd4=", - "dev": true, - "optional": true + "dev": true }, "ini": { "version": "1.3.5", @@ -3499,7 +3492,6 @@ "resolved": "https://registry.npmjs.org/is-fullwidth-code-point/-/is-fullwidth-code-point-1.0.0.tgz", "integrity": "sha1-754xOG8DGn8NZDr4L95QxFfvAMs=", "dev": true, - "optional": true, "requires": { "number-is-nan": "^1.0.0" } @@ -3516,7 +3508,6 @@ "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-3.0.4.tgz", "integrity": "sha512-yJHVQEhyqPLUTgt9B83PXu6W3rx4MvvHvSUvToogpwoGDOUQ+yDrR0HRot+yOCdCO7u4hX3pWft6kWBBcqh0UA==", "dev": true, - "optional": true, "requires": { "brace-expansion": "^1.1.7" } @@ -3525,15 +3516,13 @@ "version": "0.0.8", "resolved": "https://registry.npmjs.org/minimist/-/minimist-0.0.8.tgz", "integrity": "sha1-hX/Kv8M5fSYluCKCYuhqp6ARsF0=", - "dev": true, - "optional": true + "dev": true }, "minipass": { "version": "2.3.5", "resolved": "https://registry.npmjs.org/minipass/-/minipass-2.3.5.tgz", "integrity": "sha512-Gi1W4k059gyRbyVUZQ4mEqLm0YIUiGYfvxhF6SIlk3ui1WVxMTGfGdQ2SInh3PDrRTVvPKgULkpJtT4RH10+VA==", "dev": true, - "optional": true, "requires": { "safe-buffer": "^5.1.2", "yallist": "^3.0.0" @@ -3554,7 +3543,6 @@ "resolved": "https://registry.npmjs.org/mkdirp/-/mkdirp-0.5.1.tgz", "integrity": "sha1-MAV0OOrGz3+MR2fzhkjWaX11yQM=", "dev": true, - "optional": true, "requires": { "minimist": "0.0.8" } @@ -3643,8 +3631,7 @@ "version": "1.0.1", "resolved": "https://registry.npmjs.org/number-is-nan/-/number-is-nan-1.0.1.tgz", "integrity": "sha1-CXtgK1NCKlIsGvuHkDGDNpQaAR0=", - "dev": true, - "optional": true + "dev": true }, "object-assign": { "version": "4.1.1", @@ -3658,7 +3645,6 @@ "resolved": "https://registry.npmjs.org/once/-/once-1.4.0.tgz", "integrity": "sha1-WDsap3WWHUsROsF9nFC6753Xa9E=", "dev": true, - "optional": true, "requires": { "wrappy": "1" } @@ -3754,8 +3740,7 @@ "version": "5.1.2", "resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.1.2.tgz", "integrity": "sha512-Gd2UZBJDkXlY7GbJxfsE8/nvKkUEU1G38c1siN6QP6a9PT9MmHB8GnpscSmMJSoF8LOIrt8ud/wPtojys4G6+g==", - "dev": true, - "optional": true + "dev": true }, "safer-buffer": { "version": "2.1.2", @@ -3797,7 +3782,6 @@ "resolved": "https://registry.npmjs.org/string-width/-/string-width-1.0.2.tgz", "integrity": "sha1-EYvfW4zcUaKn5w0hHgfisLmxB9M=", "dev": true, - "optional": true, "requires": { "code-point-at": "^1.0.0", "is-fullwidth-code-point": "^1.0.0", @@ -3819,7 +3803,6 @@ "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-3.0.1.tgz", "integrity": "sha1-ajhfuIU9lS1f8F0Oiq+UJ43GPc8=", "dev": true, - "optional": true, "requires": { "ansi-regex": "^2.0.0" } @@ -3868,15 +3851,13 @@ "version": "1.0.2", "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz", "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8=", - "dev": true, - "optional": true + "dev": true }, "yallist": { "version": "3.0.3", "resolved": "https://registry.npmjs.org/yallist/-/yallist-3.0.3.tgz", "integrity": "sha512-S+Zk8DEWE6oKpV+vI3qWkaK+jSbIK86pCwe2IF/xwIpQ8jEuxpw9NyaGjmp9+BoJv5FV2piqCDcoCtStppiq2A==", - "dev": true, - "optional": true + "dev": true } } }, diff --git a/package.json b/package.json index 90f7b02e..f8a9f8fc 100644 --- a/package.json +++ b/package.json @@ -26,6 +26,7 @@ "hint-test": "jshint --verbose test", "hint-src": "jshint --verbose src", "build": "npm run hint-src && npm run prod-build && npm run hint-test && npm run prod-test", + "build-dev": "npm run hint-src && npm run prod-build", "dev": "npm-run-all --parallel dev-server dev-test", "test": "npm run dev-test", "start": "npm run dev-server" diff --git a/src/modules/padding.js b/src/modules/padding.js index ce66e22d..f0903202 100644 --- a/src/modules/padding.js +++ b/src/modules/padding.js @@ -4,13 +4,13 @@ class CacheProto { add(item) { for (let i = this.length - 1; i >= 0; i--) { if (this[i].index === item.scope.$index) { - this[i].height = item.element.outerHeight(); + this[i].height = this.rowHeight || item.element.outerHeight(); return; } } this.push({ index: item.scope.$index, - height: item.element.outerHeight() + height: this.rowHeight || item.element.outerHeight() }); this.sort((a, b) => ((a.index < b.index) ? -1 : ((a.index > b.index) ? 1 : 0))); } @@ -71,12 +71,14 @@ function generateElement(template) { } class Padding { - constructor(template) { + constructor(template,rowHeight) { this.element = generateElement(template); this.cache = new Cache(); + this.cache.rowHeight = rowHeight; } height() { + // When called wit a parameter, this sets the height of the padding return this.element.height.apply(this.element, arguments); } } diff --git a/src/modules/viewport.js b/src/modules/viewport.js index 4f64acb9..309b04c6 100644 --- a/src/modules/viewport.js +++ b/src/modules/viewport.js @@ -1,6 +1,6 @@ import Padding from './padding'; -export default function Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding) { +export default function Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding, rowHeight) { let topPadding = null; let bottomPadding = null; const viewport = viewportController && viewportController.viewport ? viewportController.viewport : angular.element(window); @@ -23,8 +23,8 @@ export default function Viewport(elementRoutines, buffer, element, viewportContr }, createPaddingElements(template) { - topPadding = new Padding(template); - bottomPadding = new Padding(template); + topPadding = new Padding(template,rowHeight); + bottomPadding = new Padding(template,rowHeight); element.before(topPadding.element); element.after(bottomPadding.element); topPadding.height(0); @@ -78,8 +78,10 @@ export default function Viewport(elementRoutines, buffer, element, viewportContr let itemHeight = 0; let emptySpaceHeight = viewport.bottomDataPos() - viewport.bottomVisiblePos() - bufferPadding(); + // Simple calculation now using the fixed rowHeight if available. + // Might be optimized if needed for (let i = buffer.length - 1; i >= 0; i--) { - itemHeight = buffer[i].element.outerHeight(true); + itemHeight = rowHeight ? rowHeight : buffer[i].element.outerHeight(true); if (overageHeight + itemHeight > emptySpaceHeight) { break; } @@ -107,8 +109,10 @@ export default function Viewport(elementRoutines, buffer, element, viewportContr let itemHeight = 0; let emptySpaceHeight = viewport.topVisiblePos() - viewport.topDataPos() - bufferPadding(); + // Simple calculation now using the fixed rowHeight if available. + // Might be optimized if needed for (let i = 0; i < buffer.length; i++) { - itemHeight = buffer[i].element.outerHeight(true); + itemHeight = rowHeight ? rowHeight : buffer[i].element.outerHeight(true); if (overageHeight + itemHeight > emptySpaceHeight) { break; } @@ -133,12 +137,17 @@ export default function Viewport(elementRoutines, buffer, element, viewportContr } // precise heights calculation based on items that are in buffer or that were in buffer once - const visibleItemsHeight = buffer.reduce((summ, item) => summ + item.element.outerHeight(true), 0); + // outerHeight(true) == [height+ padding + border + margin] + // The calculation bellow can certainly be replaced by: + // const visibleItemsHeight = rowHeight ? rowHeight * buffer.length + // : buffer.reduce((summ, item) => summ + item.element.outerHeight(true), 0); + const visibleItemsHeight = buffer.reduce((summ, item) => summ + (rowHeight ? rowHeight : item.element.outerHeight(true)), 0); + // Sinlarly, the calculation of the paddings (top & bottom) can certanly be optimizez let topPaddingHeight = 0, topCount = 0; topPadding.cache.forEach(item => { if(item.index < buffer.first) { - topPaddingHeight += item.height; + topPaddingHeight += item.height; // outerHeight(true) is actually stored in this data member topCount++; } }); @@ -146,7 +155,7 @@ export default function Viewport(elementRoutines, buffer, element, viewportContr let bottomPaddingHeight = 0, bottomCount = 0; bottomPadding.cache.forEach(item => { if(item.index >= buffer.next) { - bottomPaddingHeight += item.height; + bottomPaddingHeight += item.height; // outerHeight(true) is actually stored in this data member bottomCount++; } }); diff --git a/src/ui-scroll.js b/src/ui-scroll.js index edb83dea..1db30316 100644 --- a/src/ui-scroll.js +++ b/src/ui-scroll.js @@ -72,27 +72,34 @@ angular.module('ui.scroll', []) return parseNumber(result, defaultValue, isFloat); } - const BUFFER_MIN = 3; - const BUFFER_DEFAULT = 10; - const PADDING_MIN = 0.3; - const PADDING_DEFAULT = 0.5; - const START_INDEX_DEFAULT = 1; - const MAX_VIEWPORT_DELAY = 500; - const VIEWPORT_POLLING_INTERVAL = 50; + const BUFFER_MIN = 3; // Minimum size of the data source request + const BUFFER_DEFAULT = 10; // Default datasource request size + const PADDING_MIN = 0.3; // Mininum # of rows in the padding area + const PADDING_DEFAULT = 0.5; // Default # of rows in the padding area + const START_INDEX_DEFAULT = 1; // Default start index when requestng the first data block + const MAX_VIEWPORT_DELAY = 500; // Max time wait (ms) to get the viewport with an height>0 + const VIEWPORT_POLLING_INTERVAL = 50; // Interval used to check the initial viewport height let datasource = null; - const itemName = match[1]; - const datasourceName = match[2]; - const viewportController = controllers[0]; - const bufferSize = Math.max(BUFFER_MIN, parseNumericAttr($attr.bufferSize, BUFFER_DEFAULT)); + const itemName = match[1]; // Name of the index variable to publish + const datasourceName = match[2]; // Name of the datasource to request the rows from + const viewportController = controllers[0]; // ViewportController, as specified in the require option (http://websystique.com/angularjs/angularjs-custom-directives-controllers-require-option-guide/) + const bufferSize = Math.max(BUFFER_MIN, parseNumericAttr($attr.bufferSize, BUFFER_DEFAULT)); const padding = Math.max(PADDING_MIN, parseNumericAttr($attr.padding, PADDING_DEFAULT, true)); let startIndex = parseNumericAttr($attr.startIndex, START_INDEX_DEFAULT); + + // PHIL: Provide a fixed row height + // + const rowHeight = parseNumericAttr($attr.rowheight,null,false); + + // Revision IDs + // let ridActual = 0; // current data revision id let pending = []; const elementRoutines = new ElementRoutines($injector, $q); const buffer = new ScrollBuffer(elementRoutines, bufferSize, startIndex); - const viewport = new Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding); + const viewport = new Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding, rowHeight); const adapter = new Adapter($scope, $parse, $attr, viewport, buffer, doAdjust, reload); if (viewportController) { @@ -252,6 +259,9 @@ angular.module('ui.scroll', []) } function isElementVisible(wrapper) { + if(rowHeight) { + return true; + } return wrapper.element.height() && wrapper.element[0].offsetParent; } @@ -346,6 +356,8 @@ angular.module('ui.scroll', []) } + // Adjust the viewport paddings + // function updatePaddings(rid, updates) { // schedule another doAdjust after animation completion if (updates.animated.length) { @@ -492,7 +504,10 @@ angular.module('ui.scroll', []) unbindEvents(); } else { adapter.calculateProperties(); - !$scope.$$phase && $scope.$digest(); + if(!rowHeight) { + // The digest is forced to calculate the height, which is not necessary when the height is knowm + !$scope.$$phase && $scope.$digest(); + } } } } From bedd3785dffe0a4992c5edb17453a66d4e6b0e07 Mon Sep 17 00:00:00 2001 From: Philippe Riand Date: Tue, 4 Jun 2019 15:47:43 -0400 Subject: [PATCH 02/18] Made $digest optional in processUpdates() when the row height is fixed --- dist/ui-scroll-grid.js | 2 +- dist/ui-scroll.js | 7 +++++-- dist/ui-scroll.js.map | 2 +- dist/ui-scroll.min.js | 2 +- dist/ui-scroll.min.js.map | 2 +- src/ui-scroll.js | 6 ++++-- 6 files changed, 13 insertions(+), 8 deletions(-) diff --git a/dist/ui-scroll-grid.js b/dist/ui-scroll-grid.js index 031d3618..f222bd9a 100644 --- a/dist/ui-scroll-grid.js +++ b/dist/ui-scroll-grid.js @@ -1,7 +1,7 @@ /*! * angular-ui-scroll * https://github.com/angular-ui/ui-scroll - * Version: 1.7.3 -- 2019-06-04T19:21:29.441Z + * Version: 1.7.3 -- 2019-06-04T19:31:22.331Z * License: MIT */ /******/ (function(modules) { // webpackBootstrap diff --git a/dist/ui-scroll.js b/dist/ui-scroll.js index a0e7889e..bac617c1 100644 --- a/dist/ui-scroll.js +++ b/dist/ui-scroll.js @@ -1,7 +1,7 @@ /*! * angular-ui-scroll * https://github.com/angular-ui/ui-scroll - * Version: 1.7.3 -- 2019-06-04T19:21:29.441Z + * Version: 1.7.3 -- 2019-06-04T19:31:22.331Z * License: MIT */ /******/ (function(modules) { // webpackBootstrap @@ -1670,7 +1670,10 @@ angular.module('ui.scroll', []).constant('JQLiteExtras', jqLiteExtras_JQLiteExtr function processUpdates() { var updates = updateDOM(); // We need the item bindings to be processed before we can do adjustments - !$scope.$$phase && !$rootScope.$$phase && $scope.$digest(); + if (!rowHeight) { + !$scope.$$phase && !$rootScope.$$phase && $scope.$digest(); + } + updates.inserted.forEach(function (w) { return elementRoutines.showElement(w); }); diff --git a/dist/ui-scroll.js.map b/dist/ui-scroll.js.map index 150f29b6..a8d879dc 100644 --- a/dist/ui-scroll.js.map +++ b/dist/ui-scroll.js.map @@ -1 +1 @@ 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missing methods\r\n return angular.forEach({\r\n before(newElem) {\r\n var children, elem, i, j, parent, ref, self;\r\n self = this;\r\n elem = self[0];\r\n parent = self.parent();\r\n children = parent.contents();\r\n if (children[0] === elem) {\r\n return parent.prepend(newElem);\r\n } else {\r\n for (i = j = 1, ref = children.length - 1; 1 <= ref ? j <= ref : j >= ref; i = 1 <= ref ? ++j : --j) {\r\n if (children[i] === elem) {\r\n angular.element(children[i - 1]).after(newElem);\r\n return;\r\n }\r\n }\r\n throw new Error('invalid DOM structure ' + elem.outerHTML);\r\n }\r\n },\r\n height (value){\r\n var self;\r\n self = this;\r\n if (typeof value !== 'undefined') {\r\n if (angular.isNumber(value)) {\r\n value = value + 'px';\r\n }\r\n return css.call(self, 'height', value);\r\n } else {\r\n return getWidthHeight(this[0], 'height', 'base');\r\n }\r\n },\r\n outerHeight(option) {\r\n return getWidthHeight(this[0], 'height', option ? 'outerfull' : 'outer');\r\n },\r\n outerWidth(option) {\r\n return getWidthHeight(this[0], 'width', option ? 'outerfull' : 'outer');\r\n },\r\n\r\n /*\r\n The offset setter method is not implemented\r\n */\r\n offset(value) {\r\n let docElem, win;\r\n let self = this;\r\n let box = {\r\n top: 0,\r\n left: 0\r\n };\r\n let elem = self[0];\r\n let doc = elem && elem.ownerDocument;\r\n\r\n if (arguments.length) {\r\n if (value === undefined) {\r\n return self;\r\n }\r\n // TODO: implement setter\r\n throw new Error('offset setter method is not implemented');\r\n }\r\n\r\n if (!doc) {\r\n return;\r\n }\r\n\r\n docElem = doc.documentElement;\r\n\r\n // TODO: Make sure it's not a disconnected DOM node\r\n\r\n if (elem.getBoundingClientRect != null) {\r\n box = elem.getBoundingClientRect();\r\n }\r\n\r\n win = doc.defaultView || doc.parentWindow;\r\n\r\n return {\r\n top: box.top + (win.pageYOffset || docElem.scrollTop) - (docElem.clientTop || 0),\r\n left: box.left + (win.pageXOffset || docElem.scrollLeft) - (docElem.clientLeft || 0)\r\n };\r\n },\r\n scrollTop(value) {\r\n return scrollTo(this, 'top', value);\r\n },\r\n scrollLeft(value) {\r\n return scrollTo(this, 'left', value);\r\n }\r\n }, (value, key) => {\r\n if (!element.prototype[key]) {\r\n return element.prototype[key] = value;\r\n }\r\n });\r\n }\r\n\r\n}\r\n","const hideClassToken = 'ng-ui-scroll-hide';\r\n\r\nexport default class ElementRoutines {\r\n\r\n static addCSSRules() {\r\n const selector = '.' + hideClassToken;\r\n const rules = 'display: none';\r\n const sheet = document.styleSheets[0];\r\n let index;\r\n try {\r\n index = sheet.cssRules.length;\r\n } catch (err) {\r\n index = 0;\r\n }\r\n if('insertRule' in sheet) {\r\n sheet.insertRule(selector + '{' + rules + '}', index);\r\n }\r\n else if('addRule' in sheet) {\r\n sheet.addRule(selector, rules, index);\r\n }\r\n }\r\n\r\n constructor($injector, $q) {\r\n this.$animate = ($injector.has && $injector.has('$animate')) ? $injector.get('$animate') : null;\r\n this.isAngularVersionLessThen1_3 = angular.version.major === 1 && angular.version.minor < 3;\r\n this.$q = $q;\r\n }\r\n\r\n hideElement(wrapper) {\r\n wrapper.element.addClass(hideClassToken);\r\n }\r\n\r\n showElement(wrapper) {\r\n wrapper.element.removeClass(hideClassToken);\r\n }\r\n\r\n insertElement(newElement, previousElement) {\r\n previousElement.after(newElement);\r\n return [];\r\n }\r\n\r\n removeElement(wrapper) {\r\n wrapper.element.remove();\r\n wrapper.scope.$destroy();\r\n return [];\r\n }\r\n\r\n insertElementAnimated(newElement, previousElement) {\r\n if (!this.$animate) {\r\n return this.insertElement(newElement, previousElement);\r\n }\r\n\r\n if (this.isAngularVersionLessThen1_3) {\r\n const deferred = this.$q.defer();\r\n // no need for parent - previous element is never null\r\n this.$animate.enter(newElement, null, previousElement, () => deferred.resolve());\r\n\r\n return [deferred.promise];\r\n }\r\n\r\n // no need for parent - previous element is never null\r\n return [this.$animate.enter(newElement, null, previousElement)];\r\n }\r\n\r\n removeElementAnimated(wrapper) {\r\n if (!this.$animate) {\r\n return this.removeElement(wrapper);\r\n }\r\n\r\n if (this.isAngularVersionLessThen1_3) {\r\n const deferred = this.$q.defer();\r\n this.$animate.leave(wrapper.element, () => {\r\n wrapper.scope.$destroy();\r\n return deferred.resolve();\r\n });\r\n\r\n return [deferred.promise];\r\n }\r\n\r\n return [(this.$animate.leave(wrapper.element)).then(() => wrapper.scope.$destroy())];\r\n }\r\n}","export default function ScrollBuffer(elementRoutines, bufferSize, startIndex) {\r\n const buffer = Object.create(Array.prototype);\r\n\r\n angular.extend(buffer, {\r\n size: bufferSize,\r\n\r\n reset(startIndex) {\r\n buffer.remove(0, buffer.length);\r\n buffer.eof = false;\r\n buffer.bof = false;\r\n buffer.first = startIndex;\r\n buffer.next = startIndex;\r\n buffer.minIndex = startIndex;\r\n buffer.maxIndex = startIndex;\r\n buffer.minIndexUser = null;\r\n buffer.maxIndexUser = null;\r\n },\r\n\r\n append(items) {\r\n items.forEach((item) => {\r\n ++buffer.next;\r\n buffer.insert('append', item);\r\n });\r\n buffer.maxIndex = buffer.eof ? buffer.next - 1 : Math.max(buffer.next - 1, buffer.maxIndex);\r\n },\r\n\r\n prepend(items) {\r\n items.reverse().forEach((item) => {\r\n --buffer.first;\r\n buffer.insert('prepend', item);\r\n });\r\n buffer.minIndex = buffer.bof ? buffer.minIndex = buffer.first : Math.min(buffer.first, buffer.minIndex);\r\n },\r\n\r\n /**\r\n * inserts wrapped element in the buffer\r\n * the first argument is either operation keyword (see below) or a number for operation 'insert'\r\n * for insert the number is the index for the buffer element the new one have to be inserted after\r\n * operations: 'append', 'prepend', 'insert', 'remove', 'update', 'none'\r\n */\r\n insert(operation, item, isTop) {\r\n const wrapper = {\r\n item: item\r\n };\r\n\r\n if (operation % 1 === 0) {// it is an insert\r\n wrapper.op = 'insert';\r\n buffer.splice(operation, 0, wrapper);\r\n if(isTop) {\r\n buffer.first--;\r\n }\r\n else {\r\n buffer.next++;\r\n }\r\n } else {\r\n wrapper.op = operation;\r\n switch (operation) {\r\n case 'append':\r\n buffer.push(wrapper);\r\n break;\r\n case 'prepend':\r\n buffer.unshift(wrapper);\r\n break;\r\n }\r\n }\r\n },\r\n\r\n // removes elements from buffer\r\n remove(arg1, arg2) {\r\n if (angular.isNumber(arg1)) {\r\n // removes items from arg1 (including) through arg2 (excluding)\r\n for (let i = arg1; i < arg2; i++) {\r\n elementRoutines.removeElement(buffer[i]);\r\n }\r\n return buffer.splice(arg1, arg2 - arg1);\r\n }\r\n // removes single item(wrapper) from the buffer\r\n buffer.splice(buffer.indexOf(arg1), 1);\r\n if(arg1._op === 'isTop' && buffer.first === this.getAbsMinIndex()) {\r\n this.incrementMinIndex();\r\n }\r\n else {\r\n this.decrementMaxIndex();\r\n }\r\n if(arg1._op === 'isTop') {\r\n buffer.first++;\r\n }\r\n else {\r\n buffer.next--;\r\n }\r\n if(!buffer.length) {\r\n buffer.first = 1;\r\n buffer.next = 1;\r\n }\r\n\r\n return elementRoutines.removeElementAnimated(arg1);\r\n },\r\n\r\n incrementMinIndex() {\r\n if(buffer.minIndexUser !== null) {\r\n if(buffer.minIndex > buffer.minIndexUser) {\r\n buffer.minIndexUser++;\r\n return;\r\n }\r\n if(buffer.minIndex === buffer.minIndexUser) {\r\n buffer.minIndexUser++;\r\n }\r\n }\r\n buffer.minIndex++;\r\n },\r\n\r\n decrementMaxIndex() {\r\n if(buffer.maxIndexUser !== null && buffer.maxIndex <= buffer.maxIndexUser) {\r\n buffer.maxIndexUser--;\r\n }\r\n buffer.maxIndex--;\r\n },\r\n\r\n getAbsMinIndex() {\r\n if(buffer.minIndexUser !== null) {\r\n return Math.min(buffer.minIndexUser, buffer.minIndex);\r\n }\r\n return buffer.minIndex;\r\n },\r\n\r\n getAbsMaxIndex() {\r\n if(buffer.maxIndexUser !== null) {\r\n return Math.max(buffer.maxIndexUser, buffer.maxIndex);\r\n }\r\n return buffer.maxIndex;\r\n },\r\n\r\n effectiveHeight(elements) {\r\n if (!elements.length) {\r\n return 0;\r\n }\r\n let top = Number.MAX_VALUE;\r\n let bottom = Number.NEGATIVE_INFINITY;\r\n elements.forEach((wrapper) => {\r\n if (wrapper.element[0].offsetParent) {\r\n // element style is not display:none\r\n top = Math.min(top, wrapper.element.offset().top);\r\n bottom = Math.max(bottom, wrapper.element.offset().top + wrapper.element.outerHeight(true));\r\n }\r\n });\r\n return Math.max(0, bottom - top);\r\n }\r\n\r\n });\r\n\r\n buffer.reset(startIndex);\r\n\r\n return buffer;\r\n}\r\n","// Can't just extend the Array, due to Babel does not support built-in classes extending\r\n// This solution was taken from https://stackoverflow.com/questions/46897414/es6-class-extends-array-workaround-for-es5-babel-transpile\r\nclass CacheProto {\r\n add(item) {\r\n for (let i = this.length - 1; i >= 0; i--) {\r\n if (this[i].index === item.scope.$index) {\r\n this[i].height = this.rowHeight || item.element.outerHeight();\r\n return;\r\n }\r\n }\r\n this.push({\r\n index: item.scope.$index,\r\n height: this.rowHeight || item.element.outerHeight()\r\n });\r\n this.sort((a, b) => ((a.index < b.index) ? -1 : ((a.index > b.index) ? 1 : 0)));\r\n }\r\n\r\n remove(argument, _isTop) {\r\n const index = argument % 1 === 0 ? argument : argument.scope.$index;\r\n const isTop = argument % 1 === 0 ? _isTop : argument._op === 'isTop';\r\n for (let i = this.length - 1; i >= 0; i--) {\r\n if (this[i].index === index) {\r\n this.splice(i, 1);\r\n break;\r\n }\r\n }\r\n if(!isTop) {\r\n for (let i = this.length - 1; i >= 0; i--) {\r\n if (this[i].index > index) {\r\n this[i].index--;\r\n }\r\n }\r\n }\r\n }\r\n\r\n clear() {\r\n this.length = 0;\r\n }\r\n}\r\n\r\nfunction Cache() {\r\n const instance = [];\r\n instance.push.apply(instance, arguments);\r\n Object.setPrototypeOf(instance, Cache.prototype);\r\n return instance;\r\n}\r\nCache.prototype = Object.create(Array.prototype);\r\nObject.getOwnPropertyNames(CacheProto.prototype).forEach(methodName =>\r\n Cache.prototype[methodName] = CacheProto.prototype[methodName]\r\n);\r\n\r\nfunction generateElement(template) {\r\n if(template.nodeType !== Node.ELEMENT_NODE) {\r\n throw new Error('ui-scroll directive requires an Element node for templating the view');\r\n }\r\n let element;\r\n switch (template.tagName.toLowerCase()) {\r\n case 'dl':\r\n throw new Error(`ui-scroll directive does not support <${template.tagName}> as a repeating tag: ${template.outerHTML}`);\r\n case 'tr':\r\n let table = angular.element('
    ');\r\n element = table.find('tr');\r\n break;\r\n case 'li':\r\n element = angular.element('
  • ');\r\n break;\r\n default:\r\n element = angular.element('
    ');\r\n }\r\n return element;\r\n}\r\n\r\nclass Padding {\r\n constructor(template,rowHeight) {\r\n this.element = generateElement(template);\r\n this.cache = new Cache();\r\n this.cache.rowHeight = rowHeight;\r\n }\r\n\r\n height() {\r\n // When called wit a parameter, this sets the height of the padding\r\n return this.element.height.apply(this.element, arguments);\r\n }\r\n}\r\n\r\nexport default Padding;","import Padding from './padding';\r\n\r\nexport default function Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding, rowHeight) {\r\n let topPadding = null;\r\n let bottomPadding = null;\r\n const viewport = viewportController && viewportController.viewport ? viewportController.viewport : angular.element(window);\r\n const container = viewportController && viewportController.container ? viewportController.container : undefined;\r\n const scope = viewportController && viewportController.scope ? viewportController.scope : $rootScope;\r\n\r\n viewport.css({\r\n 'overflow-anchor': 'none',\r\n 'overflow-y': 'auto',\r\n 'display': 'block'\r\n });\r\n\r\n function bufferPadding() {\r\n return viewport.outerHeight() * padding; // some extra space to initiate preload\r\n }\r\n\r\n angular.extend(viewport, {\r\n getScope() {\r\n return scope;\r\n },\r\n\r\n createPaddingElements(template) {\r\n topPadding = new Padding(template,rowHeight);\r\n bottomPadding = new Padding(template,rowHeight);\r\n element.before(topPadding.element);\r\n element.after(bottomPadding.element);\r\n topPadding.height(0);\r\n bottomPadding.height(0);\r\n },\r\n\r\n applyContainerStyle() {\r\n if (!container) {\r\n return true;\r\n }\r\n if(container !== viewport) {\r\n viewport.css('height', window.getComputedStyle(container[0]).height);\r\n }\r\n return viewport.height() > 0;\r\n },\r\n\r\n bottomDataPos() {\r\n let scrollHeight = viewport[0].scrollHeight;\r\n scrollHeight = scrollHeight != null ? scrollHeight : viewport[0].document.documentElement.scrollHeight;\r\n return scrollHeight - bottomPadding.height();\r\n },\r\n\r\n topDataPos() {\r\n return topPadding.height();\r\n },\r\n\r\n bottomVisiblePos() {\r\n return viewport.scrollTop() + viewport.outerHeight();\r\n },\r\n\r\n topVisiblePos() {\r\n return viewport.scrollTop();\r\n },\r\n\r\n insertElement(e, sibling) {\r\n return elementRoutines.insertElement(e, sibling || topPadding.element);\r\n },\r\n\r\n insertElementAnimated(e, sibling) {\r\n return elementRoutines.insertElementAnimated(e, sibling || topPadding.element);\r\n },\r\n\r\n shouldLoadBottom() {\r\n return !buffer.eof && viewport.bottomDataPos() < viewport.bottomVisiblePos() + bufferPadding();\r\n },\r\n\r\n clipBottom() {\r\n // clip the invisible items off the bottom\r\n let overage = 0;\r\n let overageHeight = 0;\r\n let itemHeight = 0;\r\n let emptySpaceHeight = viewport.bottomDataPos() - viewport.bottomVisiblePos() - bufferPadding();\r\n\r\n // Simple calculation now using the fixed rowHeight if available.\r\n // Might be optimized if needed\r\n for (let i = buffer.length - 1; i >= 0; i--) {\r\n itemHeight = rowHeight ? rowHeight : buffer[i].element.outerHeight(true);\r\n if (overageHeight + itemHeight > emptySpaceHeight) {\r\n break;\r\n }\r\n bottomPadding.cache.add(buffer[i]);\r\n overageHeight += itemHeight;\r\n overage++;\r\n }\r\n\r\n if (overage > 0) {\r\n buffer.eof = false;\r\n buffer.remove(buffer.length - overage, buffer.length);\r\n buffer.next -= overage;\r\n viewport.adjustPaddings();\r\n }\r\n },\r\n\r\n shouldLoadTop() {\r\n return !buffer.bof && (viewport.topDataPos() > viewport.topVisiblePos() - bufferPadding());\r\n },\r\n\r\n clipTop() {\r\n // clip the invisible items off the top\r\n let overage = 0;\r\n let overageHeight = 0;\r\n let itemHeight = 0;\r\n let emptySpaceHeight = viewport.topVisiblePos() - viewport.topDataPos() - bufferPadding();\r\n\r\n // Simple calculation now using the fixed rowHeight if available.\r\n // Might be optimized if needed\r\n for (let i = 0; i < buffer.length; i++) {\r\n itemHeight = rowHeight ? rowHeight : buffer[i].element.outerHeight(true);\r\n if (overageHeight + itemHeight > emptySpaceHeight) {\r\n break;\r\n }\r\n topPadding.cache.add(buffer[i]);\r\n overageHeight += itemHeight;\r\n overage++;\r\n }\r\n\r\n if (overage > 0) {\r\n // we need to adjust top padding element before items are removed from top\r\n // to avoid strange behaviour of scroll bar during remove top items when we are at the very bottom\r\n topPadding.height(topPadding.height() + overageHeight);\r\n buffer.bof = false;\r\n buffer.remove(0, overage);\r\n buffer.first += overage;\r\n }\r\n },\r\n\r\n adjustPaddings() {\r\n if (!buffer.length) {\r\n return;\r\n }\r\n\r\n // precise heights calculation based on items that are in buffer or that were in buffer once\r\n // outerHeight(true) == [height+ padding + border + margin]\r\n // The calculation bellow can certainly be replaced by:\r\n // const visibleItemsHeight = rowHeight ? rowHeight * buffer.length\r\n // : buffer.reduce((summ, item) => summ + item.element.outerHeight(true), 0);\r\n const visibleItemsHeight = buffer.reduce((summ, item) => summ + (rowHeight ? rowHeight : item.element.outerHeight(true)), 0);\r\n\r\n // Sinlarly, the calculation of the paddings (top & bottom) can certanly be optimizez\r\n let topPaddingHeight = 0, topCount = 0;\r\n topPadding.cache.forEach(item => {\r\n if(item.index < buffer.first) {\r\n topPaddingHeight += item.height; // outerHeight(true) is actually stored in this data member\r\n topCount++;\r\n }\r\n });\r\n\r\n let bottomPaddingHeight = 0, bottomCount = 0;\r\n bottomPadding.cache.forEach(item => {\r\n if(item.index >= buffer.next) {\r\n bottomPaddingHeight += item.height; // outerHeight(true) is actually stored in this data member\r\n bottomCount++;\r\n }\r\n });\r\n\r\n const totalHeight = visibleItemsHeight + topPaddingHeight + bottomPaddingHeight;\r\n const averageItemHeight = totalHeight / (topCount + bottomCount + buffer.length);\r\n\r\n // average heights calculation, items that have never been reached\r\n let adjustTopPadding = buffer.minIndexUser !== null && buffer.minIndex > buffer.minIndexUser;\r\n let adjustBottomPadding = buffer.maxIndexUser !== null && buffer.maxIndex < buffer.maxIndexUser;\r\n let topPaddingHeightAdd = adjustTopPadding ? (buffer.minIndex - buffer.minIndexUser) * averageItemHeight : 0;\r\n let bottomPaddingHeightAdd = adjustBottomPadding ? (buffer.maxIndexUser - buffer.maxIndex) * averageItemHeight : 0;\r\n\r\n // paddings combine adjustment\r\n topPadding.height(topPaddingHeight + topPaddingHeightAdd);\r\n bottomPadding.height(bottomPaddingHeight + bottomPaddingHeightAdd);\r\n },\r\n\r\n onAfterMinIndexSet(topPaddingHeightOld) {\r\n // additional scrollTop adjustment in case of datasource.minIndex external set\r\n if (buffer.minIndexUser !== null && buffer.minIndex > buffer.minIndexUser) {\r\n let diff = topPadding.height() - topPaddingHeightOld;\r\n viewport.scrollTop(viewport.scrollTop() + diff);\r\n while((diff -= viewport.scrollTop()) > 0) {\r\n bottomPadding.height(bottomPadding.height() + diff);\r\n viewport.scrollTop(viewport.scrollTop() + diff);\r\n }\r\n }\r\n },\r\n\r\n onAfterPrepend(updates) {\r\n if (!updates.prepended.length)\r\n return;\r\n const height = buffer.effectiveHeight(updates.prepended);\r\n const paddingHeight = topPadding.height() - height;\r\n if (paddingHeight >= 0) {\r\n topPadding.height(paddingHeight);\r\n }\r\n else {\r\n topPadding.height(0);\r\n viewport.scrollTop(viewport.scrollTop() - paddingHeight);\r\n }\r\n },\r\n\r\n resetTopPadding() {\r\n topPadding.height(0);\r\n topPadding.cache.clear();\r\n },\r\n\r\n resetBottomPadding() {\r\n bottomPadding.height(0);\r\n bottomPadding.cache.clear();\r\n },\r\n\r\n removeCacheItem(item, isTop) {\r\n topPadding.cache.remove(item, isTop);\r\n bottomPadding.cache.remove(item, isTop);\r\n },\r\n\r\n removeItem(item) {\r\n this.removeCacheItem(item);\r\n return buffer.remove(item);\r\n }\r\n });\r\n\r\n return viewport;\r\n}\r\n","class Adapter {\r\n\r\n constructor($scope, $parse, $attr, viewport, buffer, doAdjust, reload) {\r\n this.$parse = $parse;\r\n this.$attr = $attr;\r\n this.viewport = viewport;\r\n this.buffer = buffer;\r\n\r\n this.doAdjust = doAdjust;\r\n this.reload = reload;\r\n\r\n this.isLoading = false;\r\n this.disabled = false;\r\n\r\n const viewportScope = viewport.getScope();\r\n this.startScope = viewportScope.$parent ? viewportScope : $scope;\r\n\r\n this.publicContext = {};\r\n this.assignAdapter($attr.adapter);\r\n this.generatePublicContext();\r\n }\r\n\r\n assignAdapter(adapterAttr) {\r\n if (!adapterAttr || !(adapterAttr = adapterAttr.replace(/^\\s+|\\s+$/gm, ''))) {\r\n return;\r\n }\r\n let adapterOnScope;\r\n\r\n try {\r\n this.$parse(adapterAttr).assign(this.startScope, {});\r\n adapterOnScope = this.$parse(adapterAttr)(this.startScope);\r\n }\r\n catch (error) {\r\n error.message = `Angular ui-scroll Adapter assignment exception.\\n` +\r\n `Can't parse \"${adapterAttr}\" expression.\\n` +\r\n error.message;\r\n throw error;\r\n }\r\n\r\n angular.extend(adapterOnScope, this.publicContext);\r\n this.publicContext = adapterOnScope;\r\n }\r\n\r\n generatePublicContext() {\r\n // these methods will be accessible out of ui-scroll via user defined adapter\r\n const publicMethods = ['reload', 'applyUpdates', 'append', 'prepend', 'isBOF', 'isEOF', 'isEmpty'];\r\n for (let i = publicMethods.length - 1; i >= 0; i--) {\r\n this.publicContext[publicMethods[i]] = this[publicMethods[i]].bind(this);\r\n }\r\n\r\n // these read-only props will be accessible out of ui-scroll via user defined adapter\r\n const publicProps = ['isLoading', 'topVisible', 'topVisibleElement', 'topVisibleScope', 'bottomVisible', 'bottomVisibleElement', 'bottomVisibleScope'];\r\n for (let i = publicProps.length - 1; i >= 0; i--) {\r\n let property, attr = this.$attr[publicProps[i]];\r\n Object.defineProperty(this, publicProps[i], {\r\n get: () => property,\r\n set: (value) => {\r\n property = value;\r\n this.publicContext[publicProps[i]] = value;\r\n if (attr) {\r\n this.$parse(attr).assign(this.startScope, value);\r\n }\r\n }\r\n });\r\n }\r\n\r\n // non-read-only public property\r\n Object.defineProperty(this.publicContext, 'disabled', {\r\n get: () => this.disabled,\r\n set: (value) => (!(this.disabled = value)) ? this.doAdjust() : null\r\n });\r\n }\r\n\r\n loading(value) {\r\n this.isLoading = value;\r\n }\r\n\r\n isBOF() {\r\n return this.buffer.bof;\r\n }\r\n\r\n isEOF() {\r\n return this.buffer.eof;\r\n }\r\n\r\n isEmpty() {\r\n return !this.buffer.length;\r\n }\r\n\r\n append(newItems) {\r\n this.buffer.append(newItems);\r\n this.doAdjust();\r\n this.viewport.clipTop();\r\n this.viewport.clipBottom();\r\n }\r\n\r\n prepend(newItems) {\r\n this.buffer.prepend(newItems);\r\n this.doAdjust();\r\n this.viewport.clipTop();\r\n this.viewport.clipBottom();\r\n }\r\n\r\n applyUpdates(arg1, arg2) {\r\n if (typeof arg1 === 'function') {\r\n this.applyUpdatesFunc(arg1);\r\n } else {\r\n this.applyUpdatesIndex(arg1, arg2);\r\n }\r\n this.doAdjust();\r\n }\r\n\r\n applyUpdatesFunc(cb) {\r\n this.buffer.slice(0).forEach((wrapper) => {\r\n // we need to do it on the buffer clone, because buffer content\r\n // may change as we iterate through\r\n this.applyUpdate(wrapper, cb(wrapper.item, wrapper.scope, wrapper.element));\r\n });\r\n }\r\n\r\n applyUpdatesIndex(index, newItems) {\r\n if (index % 1 !== 0) {\r\n throw new Error('applyUpdates - ' + index + ' is not a valid index (should be an integer)');\r\n }\r\n const _index = index - this.buffer.first;\r\n\r\n // apply updates only within buffer\r\n if (_index >= 0 && _index < this.buffer.length) {\r\n this.applyUpdate(this.buffer[_index], newItems);\r\n }\r\n // out-of-buffer case: deletion may affect Paddings\r\n else if(index >= this.buffer.getAbsMinIndex() && index <= this.buffer.getAbsMaxIndex()) {\r\n if(angular.isArray(newItems) && !newItems.length) {\r\n this.viewport.removeCacheItem(index, index === this.buffer.minIndex);\r\n if(index === this.buffer.getAbsMinIndex()) {\r\n this.buffer.incrementMinIndex();\r\n }\r\n else {\r\n this.buffer.decrementMaxIndex();\r\n }\r\n }\r\n }\r\n }\r\n\r\n applyUpdate(wrapper, newItems) {\r\n if (!angular.isArray(newItems)) {\r\n return;\r\n }\r\n let position = this.buffer.indexOf(wrapper);\r\n if (!newItems.reverse().some(newItem => newItem === wrapper.item)) {\r\n wrapper.op = 'remove';\r\n if(position === 0 && !newItems.length) {\r\n wrapper._op = 'isTop'; // to catch \"first\" edge case on remove\r\n }\r\n }\r\n newItems.forEach((newItem) => {\r\n if (newItem === wrapper.item) {\r\n position--;\r\n } else {\r\n // 3 parameter (isTop) is to catch \"first\" edge case on insert\r\n this.buffer.insert(position + 1, newItem, position === -1);\r\n }\r\n });\r\n }\r\n\r\n calculateProperties() {\r\n let rowTop = null, topHeight = 0;\r\n let topDone = false, bottomDone = false;\r\n const length = this.buffer.length;\r\n\r\n for (let i = 0; i < length; i++) {\r\n const item = this.buffer[i];\r\n const itemTop = item.element.offset().top;\r\n\r\n if (rowTop !== itemTop) { // a new row condition\r\n const itemHeight = item.element.outerHeight(true);\r\n const top = this.viewport.topDataPos() + topHeight + itemHeight;\r\n\r\n if (!topDone && top > this.viewport.topVisiblePos()) {\r\n topDone = true;\r\n this['topVisible'] = item.item;\r\n this['topVisibleElement'] = item.element;\r\n this['topVisibleScope'] = item.scope;\r\n }\r\n if (!bottomDone && (top >= this.viewport.bottomVisiblePos() || (i === length - 1 && this.isEOF()))) {\r\n bottomDone = true;\r\n this['bottomVisible'] = item.item;\r\n this['bottomVisibleElement'] = item.element;\r\n this['bottomVisibleScope'] = item.scope;\r\n }\r\n topHeight += itemHeight;\r\n }\r\n rowTop = itemTop;\r\n\r\n if (topDone && bottomDone) {\r\n break;\r\n }\r\n }\r\n }\r\n\r\n}\r\n\r\nexport default Adapter;\r\n","import JQLiteExtras from './modules/jqLiteExtras';\nimport ElementRoutines from './modules/elementRoutines.js';\nimport ScrollBuffer from './modules/buffer.js';\nimport Viewport from './modules/viewport.js';\nimport Adapter from './modules/adapter.js';\n\nangular.module('ui.scroll', [])\n\n .constant('JQLiteExtras', JQLiteExtras)\n .run(['JQLiteExtras', (JQLiteExtras) => {\n !window.jQuery ? (new JQLiteExtras()).registerFor(angular.element) : null;\n ElementRoutines.addCSSRules();\n }])\n\n .directive('uiScrollViewport', function () {\n return {\n restrict: 'A',\n controller: [\n '$scope',\n '$element',\n function (scope, element) {\n this.container = element;\n this.viewport = element;\n this.scope = scope;\n\n angular.forEach(element.children(), child => {\n if (child.tagName.toLowerCase() === 'tbody') {\n this.viewport = angular.element(child);\n }\n });\n\n return this;\n }\n ]\n };\n })\n\n .directive('uiScroll', [\n '$log',\n '$injector',\n '$rootScope',\n '$timeout',\n '$interval',\n '$q',\n '$parse',\n function (console, $injector, $rootScope, $timeout, $interval, $q, $parse) {\n\n return {\n require: ['?^uiScrollViewport'],\n restrict: 'A',\n transclude: 'element',\n priority: 1000,\n terminal: true,\n link: link\n };\n\n function link($scope, element, $attr, controllers, linker) {\n const match = $attr.uiScroll.match(/^\\s*(\\w+)\\s+in\\s+([(\\w|\\$)\\.]+)\\s*$/);\n if (!match) {\n throw new Error('Expected uiScroll in form of \\'_item_ in _datasource_\\' but got \\'' + $attr.uiScroll + '\\'');\n }\n\n function parseNumber(value, defaultValue, isFloat) {\n if (!isFloat) {\n value = value === null ? defaultValue : Math.floor(value);\n }\n return isNaN(value) ? defaultValue : value;\n }\n\n function parseNumericAttr(value, defaultValue, isFloat) {\n const result = $parse(value)($scope);\n return parseNumber(result, defaultValue, isFloat);\n }\n\n const BUFFER_MIN = 3; // Minimum size of the data source request\n const BUFFER_DEFAULT = 10; // Default datasource request size\n const PADDING_MIN = 0.3; // Mininum # of rows in the padding area\n const PADDING_DEFAULT = 0.5; // Default # of rows in the padding area\n const START_INDEX_DEFAULT = 1; // Default start index when requestng the first data block\n const MAX_VIEWPORT_DELAY = 500; // Max time wait (ms) to get the viewport with an height>0\n const VIEWPORT_POLLING_INTERVAL = 50; // Interval used to check the initial viewport height\n\n let datasource = null;\n const itemName = match[1]; // Name of the index variable to publish\n const datasourceName = match[2]; // Name of the datasource to request the rows from\n const viewportController = controllers[0]; // ViewportController, as specified in the require option (http://websystique.com/angularjs/angularjs-custom-directives-controllers-require-option-guide/)\n const bufferSize = Math.max(BUFFER_MIN, parseNumericAttr($attr.bufferSize, BUFFER_DEFAULT)); \n const padding = Math.max(PADDING_MIN, parseNumericAttr($attr.padding, PADDING_DEFAULT, true));\n let startIndex = parseNumericAttr($attr.startIndex, START_INDEX_DEFAULT);\n\n // PHIL: Provide a fixed row height\n // \n const rowHeight = parseNumericAttr($attr.rowheight,null,false);\n\n // Revision IDs\n // \n let ridActual = 0; // current data revision id\n let pending = [];\n\n const elementRoutines = new ElementRoutines($injector, $q);\n const buffer = new ScrollBuffer(elementRoutines, bufferSize, startIndex);\n const viewport = new Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding, rowHeight);\n const adapter = new Adapter($scope, $parse, $attr, viewport, buffer, doAdjust, reload);\n\n if (viewportController) {\n viewportController.adapter = adapter;\n }\n\n const isDatasourceValid = () =>\n Object.prototype.toString.call(datasource) === '[object Object]' && typeof datasource.get === 'function';\n\n datasource = $parse(datasourceName)($scope); // try to get datasource on scope\n if (!isDatasourceValid()) {\n datasource = $injector.get(datasourceName); // try to inject datasource as service\n if (!isDatasourceValid()) {\n throw new Error(datasourceName + ' is not a valid datasource');\n }\n }\n\n let onRenderHandlers = [];\n function onRenderHandlersRunner() {\n onRenderHandlers.forEach(handler => handler.run());\n onRenderHandlers = [];\n }\n function persistDatasourceIndex(datasource, propName) {\n let getter;\n // need to postpone min/maxIndexUser processing if the view is empty\n if(angular.isNumber(datasource[propName])) {\n getter = datasource[propName];\n if(angular.isNumber(getter)) {\n onRenderHandlers = onRenderHandlers.filter(handler => handler.id !== propName);\n onRenderHandlers.push({\n id: propName,\n run: () => datasource[propName] = getter\n });\n }\n }\n }\n\n function defineDatasourceIndex(datasource, propName, propUserName) {\n const descriptor = Object.getOwnPropertyDescriptor(datasource, propName);\n if (descriptor && (descriptor.set || descriptor.get)) {\n return;\n }\n let getter;\n persistDatasourceIndex(datasource, propName);\n Object.defineProperty(datasource, propName, {\n set: (value) => {\n getter = value;\n if(pending.length && !buffer.length) {\n persistDatasourceIndex(datasource, propName);\n return;\n }\n buffer[propUserName] = value;\n const topPaddingHeightOld = viewport.topDataPos();\n viewport.adjustPaddings();\n if (propName === 'minIndex') {\n viewport.onAfterMinIndexSet(topPaddingHeightOld);\n }\n },\n get: () => getter\n });\n }\n\n defineDatasourceIndex(datasource, 'minIndex', 'minIndexUser');\n defineDatasourceIndex(datasource, 'maxIndex', 'maxIndexUser');\n\n const fetchNext = (datasource.get.length !== 2) ?\n (success) => datasource.get(buffer.next, bufferSize, success) :\n (success) => {\n datasource.get({\n index: buffer.next,\n append: buffer.length ? buffer[buffer.length - 1].item : void 0,\n count: bufferSize\n }, success);\n };\n\n const fetchPrevious = (datasource.get.length !== 2) ?\n (success) => datasource.get(buffer.first - bufferSize, bufferSize, success) :\n (success) => {\n datasource.get({\n index: buffer.first - bufferSize,\n prepend: buffer.length ? buffer[0].item : void 0,\n count: bufferSize\n }, success);\n };\n\n const initialize = () => {\n let tryCount = 0;\n if(!viewport.applyContainerStyle()) {\n const timer = $interval(() => {\n tryCount++;\n if(viewport.applyContainerStyle()) {\n $interval.cancel(timer);\n doAdjust();\n }\n if(tryCount * VIEWPORT_POLLING_INTERVAL >= MAX_VIEWPORT_DELAY) {\n $interval.cancel(timer);\n throw Error(`ui-scroll directive requires a viewport with non-zero height in ${MAX_VIEWPORT_DELAY}ms`);\n }\n }, VIEWPORT_POLLING_INTERVAL);\n }\n else {\n doAdjust();\n }\n };\n\n /**\n * Build padding elements\n *\n * Calling linker is the only way I found to get access to the tag name of the template\n * to prevent the directive scope from pollution a new scope is created and destroyed\n * right after the builder creation is completed\n */\n linker((clone, scope) => {\n viewport.createPaddingElements(clone[0]);\n // we do not include the clone in the DOM. It means that the nested directives will not\n // be able to reach the parent directives, but in this case it is intentional because we\n // created the clone to access the template tag name\n scope.$destroy();\n clone.remove();\n });\n\n $scope.$on('$destroy', () => {\n unbindEvents();\n viewport.unbind('mousewheel', wheelHandler);\n });\n\n viewport.bind('mousewheel', wheelHandler);\n\n initialize();\n\n /* Private function definitions */\n\n function isInvalid(rid) {\n return (rid && rid !== ridActual) || $scope.$$destroyed;\n }\n\n function bindEvents() {\n viewport.bind('resize', resizeAndScrollHandler);\n viewport.bind('scroll', resizeAndScrollHandler);\n }\n\n function unbindEvents() {\n viewport.unbind('resize', resizeAndScrollHandler);\n viewport.unbind('scroll', resizeAndScrollHandler);\n }\n\n function reload() {\n viewport.resetTopPadding();\n viewport.resetBottomPadding();\n if (arguments.length) {\n startIndex = parseNumber(arguments[0], START_INDEX_DEFAULT, false);\n }\n buffer.reset(startIndex);\n persistDatasourceIndex(datasource, 'minIndex');\n persistDatasourceIndex(datasource, 'maxIndex');\n doAdjust();\n }\n\n function isElementVisible(wrapper) {\n if(rowHeight) {\n return true;\n }\n return wrapper.element.height() && wrapper.element[0].offsetParent;\n }\n\n function visibilityWatcher(wrapper) {\n if (isElementVisible(wrapper)) {\n buffer.forEach((item) => {\n if (typeof item.unregisterVisibilityWatcher === 'function') {\n item.unregisterVisibilityWatcher();\n delete item.unregisterVisibilityWatcher;\n }\n });\n if (!pending.length) {\n $timeout(() => doAdjust());\n }\n }\n }\n\n function insertWrapperContent(wrapper, insertAfter) {\n createElement(wrapper, insertAfter, viewport.insertElement);\n if (!isElementVisible(wrapper)) {\n wrapper.unregisterVisibilityWatcher = wrapper.scope.$watch(() => visibilityWatcher(wrapper));\n }\n elementRoutines.hideElement(wrapper); // hide inserted elements before data binding\n }\n\n function createElement(wrapper, insertAfter, insertElement) {\n let promises = null;\n const sibling = (insertAfter > 0) ? buffer[insertAfter - 1].element : undefined;\n linker((clone, scope) => {\n promises = insertElement(clone, sibling);\n wrapper.element = clone;\n wrapper.scope = scope;\n scope[itemName] = wrapper.item;\n });\n // ui-scroll-grid apply\n if (adapter.transform) {\n const tdInitializer = wrapper.scope.uiScrollTdInitializer;\n if (tdInitializer && tdInitializer.linking) {\n adapter.transform(wrapper.scope, wrapper.element);\n } else {\n wrapper.scope.uiScrollTdInitializer = {\n onLink: () => adapter.transform(wrapper.scope, wrapper.element),\n scope: wrapper.scope\n };\n }\n }\n return promises;\n }\n\n function updateDOM() {\n let promises = [];\n const toBePrepended = [];\n const toBeRemoved = [];\n const inserted = [];\n\n buffer.forEach((wrapper, i) => {\n switch (wrapper.op) {\n case 'prepend':\n toBePrepended.unshift(wrapper);\n break;\n case 'append':\n insertWrapperContent(wrapper, i);\n wrapper.op = 'none';\n inserted.push(wrapper);\n break;\n case 'insert':\n promises = promises.concat(createElement(wrapper, i, viewport.insertElementAnimated));\n wrapper.op = 'none';\n inserted.push(wrapper);\n break;\n case 'remove':\n toBeRemoved.push(wrapper);\n }\n });\n\n toBeRemoved.forEach((wrapper) => promises = promises.concat(viewport.removeItem(wrapper)));\n\n if (toBePrepended.length)\n toBePrepended.forEach((wrapper) => {\n insertWrapperContent(wrapper);\n wrapper.op = 'none';\n });\n\n buffer.forEach((item, i) => item.scope.$index = buffer.first + i);\n\n return {\n prepended: toBePrepended,\n removed: toBeRemoved,\n inserted: inserted,\n animated: promises\n };\n\n }\n\n // Adjust the viewport paddings\n // \n function updatePaddings(rid, updates) {\n // schedule another doAdjust after animation completion\n if (updates.animated.length) {\n $q.all(updates.animated).then(() => {\n viewport.adjustPaddings();\n doAdjust(rid);\n });\n } else {\n viewport.adjustPaddings();\n }\n }\n\n function enqueueFetch(rid, updates) {\n if (viewport.shouldLoadBottom()) {\n if (!updates || buffer.effectiveHeight(updates.inserted) > 0) {\n // this means that at least one item appended in the last batch has height > 0\n if (pending.push(true) === 1) {\n adapter.loading(true);\n fetch(rid);\n }\n }\n } else if (viewport.shouldLoadTop()) {\n if ((!updates || buffer.effectiveHeight(updates.prepended) > 0) || pending[0]) {\n // this means that at least one item appended in the last batch has height > 0\n // pending[0] = true means that previous fetch was appending. We need to force at least one prepend\n // BTW there will always be at least 1 element in the pending array because bottom is fetched first\n if (pending.push(false) === 1) {\n adapter.loading(true);\n fetch(rid);\n }\n }\n }\n }\n\n function processUpdates() {\n const updates = updateDOM();\n\n // We need the item bindings to be processed before we can do adjustments\n !$scope.$$phase && !$rootScope.$$phase && $scope.$digest();\n\n updates.inserted.forEach(w => elementRoutines.showElement(w));\n updates.prepended.forEach(w => elementRoutines.showElement(w));\n return updates;\n }\n\n function doAdjust(rid) {\n if (!rid) { // dismiss pending requests\n pending = [];\n rid = ++ridActual;\n }\n\n const updates = processUpdates();\n\n if (isInvalid(rid)) {\n return;\n }\n\n updatePaddings(rid, updates);\n enqueueFetch(rid);\n\n if (!pending.length) {\n adapter.calculateProperties();\n }\n }\n\n function doAdjustAfterFetch(rid) {\n const updates = processUpdates();\n\n viewport.onAfterPrepend(updates);\n\n if (isInvalid(rid)) {\n return;\n }\n\n updatePaddings(rid, updates);\n onRenderHandlersRunner();\n enqueueFetch(rid, updates);\n pending.shift();\n\n if (pending.length)\n fetch(rid);\n else {\n adapter.loading(false);\n bindEvents();\n adapter.calculateProperties();\n }\n }\n\n function fetch(rid) {\n if (pending[0]) {// scrolling down\n if (buffer.length && !viewport.shouldLoadBottom()) {\n doAdjustAfterFetch(rid);\n } else {\n fetchNext((result) => {\n if (isInvalid(rid)) {\n return;\n }\n\n if (result.length < bufferSize) {\n buffer.eof = true;\n }\n\n if (result.length > 0) {\n viewport.clipTop();\n buffer.append(result);\n }\n\n doAdjustAfterFetch(rid);\n });\n }\n } else { // scrolling up\n if (buffer.length && !viewport.shouldLoadTop()) {\n doAdjustAfterFetch(rid);\n } else {\n fetchPrevious((result) => {\n if (isInvalid(rid)) {\n return;\n }\n\n if (result.length < bufferSize) {\n buffer.bof = true;\n // log 'bof is reached'\n }\n\n if (result.length > 0) {\n if (buffer.length) {\n viewport.clipBottom();\n }\n buffer.prepend(result);\n }\n\n doAdjustAfterFetch(rid);\n });\n }\n }\n }\n\n function resizeAndScrollHandler() {\n if (!$rootScope.$$phase && !adapter.isLoading && !adapter.disabled) {\n\n enqueueFetch(ridActual);\n\n if (pending.length) {\n unbindEvents();\n } else {\n adapter.calculateProperties();\n if(!rowHeight) {\n // The digest is forced to calculate the height, which is not necessary when the height is knowm\n !$scope.$$phase && $scope.$digest();\n }\n }\n }\n }\n\n function wheelHandler(event) {\n if (!adapter.disabled) {\n const scrollTop = viewport[0].scrollTop;\n const yMax = viewport[0].scrollHeight - viewport[0].clientHeight;\n\n if ((scrollTop === 0 && !buffer.bof) || (scrollTop === yMax && !buffer.eof)) {\n event.preventDefault();\n }\n }\n }\n }\n\n }\n ]);\n"],"sourceRoot":""} \ No newline at end of file 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missing methods\r\n return angular.forEach({\r\n before(newElem) {\r\n var children, elem, i, j, parent, ref, self;\r\n self = this;\r\n elem = self[0];\r\n parent = self.parent();\r\n children = parent.contents();\r\n if (children[0] === elem) {\r\n return parent.prepend(newElem);\r\n } else {\r\n for (i = j = 1, ref = children.length - 1; 1 <= ref ? j <= ref : j >= ref; i = 1 <= ref ? ++j : --j) {\r\n if (children[i] === elem) {\r\n angular.element(children[i - 1]).after(newElem);\r\n return;\r\n }\r\n }\r\n throw new Error('invalid DOM structure ' + elem.outerHTML);\r\n }\r\n },\r\n height (value){\r\n var self;\r\n self = this;\r\n if (typeof value !== 'undefined') {\r\n if (angular.isNumber(value)) {\r\n value = value + 'px';\r\n }\r\n return css.call(self, 'height', value);\r\n } else {\r\n return getWidthHeight(this[0], 'height', 'base');\r\n }\r\n },\r\n outerHeight(option) {\r\n return getWidthHeight(this[0], 'height', option ? 'outerfull' : 'outer');\r\n },\r\n outerWidth(option) {\r\n return getWidthHeight(this[0], 'width', option ? 'outerfull' : 'outer');\r\n },\r\n\r\n /*\r\n The offset setter method is not implemented\r\n */\r\n offset(value) {\r\n let docElem, win;\r\n let self = this;\r\n let box = {\r\n top: 0,\r\n left: 0\r\n };\r\n let elem = self[0];\r\n let doc = elem && elem.ownerDocument;\r\n\r\n if (arguments.length) {\r\n if (value === undefined) {\r\n return self;\r\n }\r\n // TODO: implement setter\r\n throw new Error('offset setter method is not implemented');\r\n }\r\n\r\n if (!doc) {\r\n return;\r\n }\r\n\r\n docElem = doc.documentElement;\r\n\r\n // TODO: Make sure it's not a disconnected DOM node\r\n\r\n if (elem.getBoundingClientRect != null) {\r\n box = elem.getBoundingClientRect();\r\n }\r\n\r\n win = doc.defaultView || doc.parentWindow;\r\n\r\n return {\r\n top: box.top + (win.pageYOffset || docElem.scrollTop) - (docElem.clientTop || 0),\r\n left: box.left + (win.pageXOffset || docElem.scrollLeft) - (docElem.clientLeft || 0)\r\n };\r\n },\r\n scrollTop(value) {\r\n return scrollTo(this, 'top', value);\r\n },\r\n scrollLeft(value) {\r\n return scrollTo(this, 'left', value);\r\n }\r\n }, (value, key) => {\r\n if (!element.prototype[key]) {\r\n return element.prototype[key] = value;\r\n }\r\n });\r\n }\r\n\r\n}\r\n","const hideClassToken = 'ng-ui-scroll-hide';\r\n\r\nexport default class ElementRoutines {\r\n\r\n static addCSSRules() {\r\n const selector = '.' + hideClassToken;\r\n const rules = 'display: none';\r\n const sheet = document.styleSheets[0];\r\n let index;\r\n try {\r\n index = sheet.cssRules.length;\r\n } catch (err) {\r\n index = 0;\r\n }\r\n if('insertRule' in sheet) {\r\n sheet.insertRule(selector + '{' + rules + '}', index);\r\n }\r\n else if('addRule' in sheet) {\r\n sheet.addRule(selector, rules, index);\r\n }\r\n }\r\n\r\n constructor($injector, $q) {\r\n this.$animate = ($injector.has && $injector.has('$animate')) ? $injector.get('$animate') : null;\r\n this.isAngularVersionLessThen1_3 = angular.version.major === 1 && angular.version.minor < 3;\r\n this.$q = $q;\r\n }\r\n\r\n hideElement(wrapper) {\r\n wrapper.element.addClass(hideClassToken);\r\n }\r\n\r\n showElement(wrapper) {\r\n wrapper.element.removeClass(hideClassToken);\r\n }\r\n\r\n insertElement(newElement, previousElement) {\r\n previousElement.after(newElement);\r\n return [];\r\n }\r\n\r\n removeElement(wrapper) {\r\n wrapper.element.remove();\r\n wrapper.scope.$destroy();\r\n return [];\r\n }\r\n\r\n insertElementAnimated(newElement, previousElement) {\r\n if (!this.$animate) {\r\n return this.insertElement(newElement, previousElement);\r\n }\r\n\r\n if (this.isAngularVersionLessThen1_3) {\r\n const deferred = this.$q.defer();\r\n // no need for parent - previous element is never null\r\n this.$animate.enter(newElement, null, previousElement, () => deferred.resolve());\r\n\r\n return [deferred.promise];\r\n }\r\n\r\n // no need for parent - previous element is never null\r\n return [this.$animate.enter(newElement, null, previousElement)];\r\n }\r\n\r\n removeElementAnimated(wrapper) {\r\n if (!this.$animate) {\r\n return this.removeElement(wrapper);\r\n }\r\n\r\n if (this.isAngularVersionLessThen1_3) {\r\n const deferred = this.$q.defer();\r\n this.$animate.leave(wrapper.element, () => {\r\n wrapper.scope.$destroy();\r\n return deferred.resolve();\r\n });\r\n\r\n return [deferred.promise];\r\n }\r\n\r\n return [(this.$animate.leave(wrapper.element)).then(() => wrapper.scope.$destroy())];\r\n }\r\n}","export default function ScrollBuffer(elementRoutines, bufferSize, startIndex) {\r\n const buffer = Object.create(Array.prototype);\r\n\r\n angular.extend(buffer, {\r\n size: bufferSize,\r\n\r\n reset(startIndex) {\r\n buffer.remove(0, buffer.length);\r\n buffer.eof = false;\r\n buffer.bof = false;\r\n buffer.first = startIndex;\r\n buffer.next = startIndex;\r\n buffer.minIndex = startIndex;\r\n buffer.maxIndex = startIndex;\r\n buffer.minIndexUser = null;\r\n buffer.maxIndexUser = null;\r\n },\r\n\r\n append(items) {\r\n items.forEach((item) => {\r\n ++buffer.next;\r\n buffer.insert('append', item);\r\n });\r\n buffer.maxIndex = buffer.eof ? buffer.next - 1 : Math.max(buffer.next - 1, buffer.maxIndex);\r\n },\r\n\r\n prepend(items) {\r\n items.reverse().forEach((item) => {\r\n --buffer.first;\r\n buffer.insert('prepend', item);\r\n });\r\n buffer.minIndex = buffer.bof ? buffer.minIndex = buffer.first : Math.min(buffer.first, buffer.minIndex);\r\n },\r\n\r\n /**\r\n * inserts wrapped element in the buffer\r\n * the first argument is either operation keyword (see below) or a number for operation 'insert'\r\n * for insert the number is the index for the buffer element the new one have to be inserted after\r\n * operations: 'append', 'prepend', 'insert', 'remove', 'update', 'none'\r\n */\r\n insert(operation, item, isTop) {\r\n const wrapper = {\r\n item: item\r\n };\r\n\r\n if (operation % 1 === 0) {// it is an insert\r\n wrapper.op = 'insert';\r\n buffer.splice(operation, 0, wrapper);\r\n if(isTop) {\r\n buffer.first--;\r\n }\r\n else {\r\n buffer.next++;\r\n }\r\n } else {\r\n wrapper.op = operation;\r\n switch (operation) {\r\n case 'append':\r\n buffer.push(wrapper);\r\n break;\r\n case 'prepend':\r\n buffer.unshift(wrapper);\r\n break;\r\n }\r\n }\r\n },\r\n\r\n // removes elements from buffer\r\n remove(arg1, arg2) {\r\n if (angular.isNumber(arg1)) {\r\n // removes items from arg1 (including) through arg2 (excluding)\r\n for (let i = arg1; i < arg2; i++) {\r\n elementRoutines.removeElement(buffer[i]);\r\n }\r\n return buffer.splice(arg1, arg2 - arg1);\r\n }\r\n // removes single item(wrapper) from the buffer\r\n buffer.splice(buffer.indexOf(arg1), 1);\r\n if(arg1._op === 'isTop' && buffer.first === this.getAbsMinIndex()) {\r\n this.incrementMinIndex();\r\n }\r\n else {\r\n this.decrementMaxIndex();\r\n }\r\n if(arg1._op === 'isTop') {\r\n buffer.first++;\r\n }\r\n else {\r\n buffer.next--;\r\n }\r\n if(!buffer.length) {\r\n buffer.first = 1;\r\n buffer.next = 1;\r\n }\r\n\r\n return elementRoutines.removeElementAnimated(arg1);\r\n },\r\n\r\n incrementMinIndex() {\r\n if(buffer.minIndexUser !== null) {\r\n if(buffer.minIndex > buffer.minIndexUser) {\r\n buffer.minIndexUser++;\r\n return;\r\n }\r\n if(buffer.minIndex === buffer.minIndexUser) {\r\n buffer.minIndexUser++;\r\n }\r\n }\r\n buffer.minIndex++;\r\n },\r\n\r\n decrementMaxIndex() {\r\n if(buffer.maxIndexUser !== null && buffer.maxIndex <= buffer.maxIndexUser) {\r\n buffer.maxIndexUser--;\r\n }\r\n buffer.maxIndex--;\r\n },\r\n\r\n getAbsMinIndex() {\r\n if(buffer.minIndexUser !== null) {\r\n return Math.min(buffer.minIndexUser, buffer.minIndex);\r\n }\r\n return buffer.minIndex;\r\n },\r\n\r\n getAbsMaxIndex() {\r\n if(buffer.maxIndexUser !== null) {\r\n return Math.max(buffer.maxIndexUser, buffer.maxIndex);\r\n }\r\n return buffer.maxIndex;\r\n },\r\n\r\n effectiveHeight(elements) {\r\n if (!elements.length) {\r\n return 0;\r\n }\r\n let top = Number.MAX_VALUE;\r\n let bottom = Number.NEGATIVE_INFINITY;\r\n elements.forEach((wrapper) => {\r\n if (wrapper.element[0].offsetParent) {\r\n // element style is not display:none\r\n top = Math.min(top, wrapper.element.offset().top);\r\n bottom = Math.max(bottom, wrapper.element.offset().top + wrapper.element.outerHeight(true));\r\n }\r\n });\r\n return Math.max(0, bottom - top);\r\n }\r\n\r\n });\r\n\r\n buffer.reset(startIndex);\r\n\r\n return buffer;\r\n}\r\n","// Can't just extend the Array, due to Babel does not support built-in classes extending\r\n// This solution was taken from https://stackoverflow.com/questions/46897414/es6-class-extends-array-workaround-for-es5-babel-transpile\r\nclass CacheProto {\r\n add(item) {\r\n for (let i = this.length - 1; i >= 0; i--) {\r\n if (this[i].index === item.scope.$index) {\r\n this[i].height = this.rowHeight || item.element.outerHeight();\r\n return;\r\n }\r\n }\r\n this.push({\r\n index: item.scope.$index,\r\n height: this.rowHeight || item.element.outerHeight()\r\n });\r\n this.sort((a, b) => ((a.index < b.index) ? -1 : ((a.index > b.index) ? 1 : 0)));\r\n }\r\n\r\n remove(argument, _isTop) {\r\n const index = argument % 1 === 0 ? argument : argument.scope.$index;\r\n const isTop = argument % 1 === 0 ? _isTop : argument._op === 'isTop';\r\n for (let i = this.length - 1; i >= 0; i--) {\r\n if (this[i].index === index) {\r\n this.splice(i, 1);\r\n break;\r\n }\r\n }\r\n if(!isTop) {\r\n for (let i = this.length - 1; i >= 0; i--) {\r\n if (this[i].index > index) {\r\n this[i].index--;\r\n }\r\n }\r\n }\r\n }\r\n\r\n clear() {\r\n this.length = 0;\r\n }\r\n}\r\n\r\nfunction Cache() {\r\n const instance = [];\r\n instance.push.apply(instance, arguments);\r\n Object.setPrototypeOf(instance, Cache.prototype);\r\n return instance;\r\n}\r\nCache.prototype = Object.create(Array.prototype);\r\nObject.getOwnPropertyNames(CacheProto.prototype).forEach(methodName =>\r\n Cache.prototype[methodName] = CacheProto.prototype[methodName]\r\n);\r\n\r\nfunction generateElement(template) {\r\n if(template.nodeType !== Node.ELEMENT_NODE) {\r\n throw new Error('ui-scroll directive requires an Element node for templating the view');\r\n }\r\n let element;\r\n switch (template.tagName.toLowerCase()) {\r\n case 'dl':\r\n throw new Error(`ui-scroll directive does not support <${template.tagName}> as a repeating tag: ${template.outerHTML}`);\r\n case 'tr':\r\n let table = angular.element('
    ');\r\n element = table.find('tr');\r\n break;\r\n case 'li':\r\n element = angular.element('
  • ');\r\n break;\r\n default:\r\n element = angular.element('
    ');\r\n }\r\n return element;\r\n}\r\n\r\nclass Padding {\r\n constructor(template,rowHeight) {\r\n this.element = generateElement(template);\r\n this.cache = new Cache();\r\n this.cache.rowHeight = rowHeight;\r\n }\r\n\r\n height() {\r\n // When called wit a parameter, this sets the height of the padding\r\n return this.element.height.apply(this.element, arguments);\r\n }\r\n}\r\n\r\nexport default Padding;","import Padding from './padding';\r\n\r\nexport default function Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding, rowHeight) {\r\n let topPadding = null;\r\n let bottomPadding = null;\r\n const viewport = viewportController && viewportController.viewport ? viewportController.viewport : angular.element(window);\r\n const container = viewportController && viewportController.container ? viewportController.container : undefined;\r\n const scope = viewportController && viewportController.scope ? viewportController.scope : $rootScope;\r\n\r\n viewport.css({\r\n 'overflow-anchor': 'none',\r\n 'overflow-y': 'auto',\r\n 'display': 'block'\r\n });\r\n\r\n function bufferPadding() {\r\n return viewport.outerHeight() * padding; // some extra space to initiate preload\r\n }\r\n\r\n angular.extend(viewport, {\r\n getScope() {\r\n return scope;\r\n },\r\n\r\n createPaddingElements(template) {\r\n topPadding = new Padding(template,rowHeight);\r\n bottomPadding = new Padding(template,rowHeight);\r\n element.before(topPadding.element);\r\n element.after(bottomPadding.element);\r\n topPadding.height(0);\r\n bottomPadding.height(0);\r\n },\r\n\r\n applyContainerStyle() {\r\n if (!container) {\r\n return true;\r\n }\r\n if(container !== viewport) {\r\n viewport.css('height', window.getComputedStyle(container[0]).height);\r\n }\r\n return viewport.height() > 0;\r\n },\r\n\r\n bottomDataPos() {\r\n let scrollHeight = viewport[0].scrollHeight;\r\n scrollHeight = scrollHeight != null ? scrollHeight : viewport[0].document.documentElement.scrollHeight;\r\n return scrollHeight - bottomPadding.height();\r\n },\r\n\r\n topDataPos() {\r\n return topPadding.height();\r\n },\r\n\r\n bottomVisiblePos() {\r\n return viewport.scrollTop() + viewport.outerHeight();\r\n },\r\n\r\n topVisiblePos() {\r\n return viewport.scrollTop();\r\n },\r\n\r\n insertElement(e, sibling) {\r\n return elementRoutines.insertElement(e, sibling || topPadding.element);\r\n },\r\n\r\n insertElementAnimated(e, sibling) {\r\n return elementRoutines.insertElementAnimated(e, sibling || topPadding.element);\r\n },\r\n\r\n shouldLoadBottom() {\r\n return !buffer.eof && viewport.bottomDataPos() < viewport.bottomVisiblePos() + bufferPadding();\r\n },\r\n\r\n clipBottom() {\r\n // clip the invisible items off the bottom\r\n let overage = 0;\r\n let overageHeight = 0;\r\n let itemHeight = 0;\r\n let emptySpaceHeight = viewport.bottomDataPos() - viewport.bottomVisiblePos() - bufferPadding();\r\n\r\n // Simple calculation now using the fixed rowHeight if available.\r\n // Might be optimized if needed\r\n for (let i = buffer.length - 1; i >= 0; i--) {\r\n itemHeight = rowHeight ? rowHeight : buffer[i].element.outerHeight(true);\r\n if (overageHeight + itemHeight > emptySpaceHeight) {\r\n break;\r\n }\r\n bottomPadding.cache.add(buffer[i]);\r\n overageHeight += itemHeight;\r\n overage++;\r\n }\r\n\r\n if (overage > 0) {\r\n buffer.eof = false;\r\n buffer.remove(buffer.length - overage, buffer.length);\r\n buffer.next -= overage;\r\n viewport.adjustPaddings();\r\n }\r\n },\r\n\r\n shouldLoadTop() {\r\n return !buffer.bof && (viewport.topDataPos() > viewport.topVisiblePos() - bufferPadding());\r\n },\r\n\r\n clipTop() {\r\n // clip the invisible items off the top\r\n let overage = 0;\r\n let overageHeight = 0;\r\n let itemHeight = 0;\r\n let emptySpaceHeight = viewport.topVisiblePos() - viewport.topDataPos() - bufferPadding();\r\n\r\n // Simple calculation now using the fixed rowHeight if available.\r\n // Might be optimized if needed\r\n for (let i = 0; i < buffer.length; i++) {\r\n itemHeight = rowHeight ? rowHeight : buffer[i].element.outerHeight(true);\r\n if (overageHeight + itemHeight > emptySpaceHeight) {\r\n break;\r\n }\r\n topPadding.cache.add(buffer[i]);\r\n overageHeight += itemHeight;\r\n overage++;\r\n }\r\n\r\n if (overage > 0) {\r\n // we need to adjust top padding element before items are removed from top\r\n // to avoid strange behaviour of scroll bar during remove top items when we are at the very bottom\r\n topPadding.height(topPadding.height() + overageHeight);\r\n buffer.bof = false;\r\n buffer.remove(0, overage);\r\n buffer.first += overage;\r\n }\r\n },\r\n\r\n adjustPaddings() {\r\n if (!buffer.length) {\r\n return;\r\n }\r\n\r\n // precise heights calculation based on items that are in buffer or that were in buffer once\r\n // outerHeight(true) == [height+ padding + border + margin]\r\n // The calculation bellow can certainly be replaced by:\r\n // const visibleItemsHeight = rowHeight ? rowHeight * buffer.length\r\n // : buffer.reduce((summ, item) => summ + item.element.outerHeight(true), 0);\r\n const visibleItemsHeight = buffer.reduce((summ, item) => summ + (rowHeight ? rowHeight : item.element.outerHeight(true)), 0);\r\n\r\n // Sinlarly, the calculation of the paddings (top & bottom) can certanly be optimizez\r\n let topPaddingHeight = 0, topCount = 0;\r\n topPadding.cache.forEach(item => {\r\n if(item.index < buffer.first) {\r\n topPaddingHeight += item.height; // outerHeight(true) is actually stored in this data member\r\n topCount++;\r\n }\r\n });\r\n\r\n let bottomPaddingHeight = 0, bottomCount = 0;\r\n bottomPadding.cache.forEach(item => {\r\n if(item.index >= buffer.next) {\r\n bottomPaddingHeight += item.height; // outerHeight(true) is actually stored in this data member\r\n bottomCount++;\r\n }\r\n });\r\n\r\n const totalHeight = visibleItemsHeight + topPaddingHeight + bottomPaddingHeight;\r\n const averageItemHeight = totalHeight / (topCount + bottomCount + buffer.length);\r\n\r\n // average heights calculation, items that have never been reached\r\n let adjustTopPadding = buffer.minIndexUser !== null && buffer.minIndex > buffer.minIndexUser;\r\n let adjustBottomPadding = buffer.maxIndexUser !== null && buffer.maxIndex < buffer.maxIndexUser;\r\n let topPaddingHeightAdd = adjustTopPadding ? (buffer.minIndex - buffer.minIndexUser) * averageItemHeight : 0;\r\n let bottomPaddingHeightAdd = adjustBottomPadding ? (buffer.maxIndexUser - buffer.maxIndex) * averageItemHeight : 0;\r\n\r\n // paddings combine adjustment\r\n topPadding.height(topPaddingHeight + topPaddingHeightAdd);\r\n bottomPadding.height(bottomPaddingHeight + bottomPaddingHeightAdd);\r\n },\r\n\r\n onAfterMinIndexSet(topPaddingHeightOld) {\r\n // additional scrollTop adjustment in case of datasource.minIndex external set\r\n if (buffer.minIndexUser !== null && buffer.minIndex > buffer.minIndexUser) {\r\n let diff = topPadding.height() - topPaddingHeightOld;\r\n viewport.scrollTop(viewport.scrollTop() + diff);\r\n while((diff -= viewport.scrollTop()) > 0) {\r\n bottomPadding.height(bottomPadding.height() + diff);\r\n viewport.scrollTop(viewport.scrollTop() + diff);\r\n }\r\n }\r\n },\r\n\r\n onAfterPrepend(updates) {\r\n if (!updates.prepended.length)\r\n return;\r\n const height = buffer.effectiveHeight(updates.prepended);\r\n const paddingHeight = topPadding.height() - height;\r\n if (paddingHeight >= 0) {\r\n topPadding.height(paddingHeight);\r\n }\r\n else {\r\n topPadding.height(0);\r\n viewport.scrollTop(viewport.scrollTop() - paddingHeight);\r\n }\r\n },\r\n\r\n resetTopPadding() {\r\n topPadding.height(0);\r\n topPadding.cache.clear();\r\n },\r\n\r\n resetBottomPadding() {\r\n bottomPadding.height(0);\r\n bottomPadding.cache.clear();\r\n },\r\n\r\n removeCacheItem(item, isTop) {\r\n topPadding.cache.remove(item, isTop);\r\n bottomPadding.cache.remove(item, isTop);\r\n },\r\n\r\n removeItem(item) {\r\n this.removeCacheItem(item);\r\n return buffer.remove(item);\r\n }\r\n });\r\n\r\n return viewport;\r\n}\r\n","class Adapter {\r\n\r\n constructor($scope, $parse, $attr, viewport, buffer, doAdjust, reload) {\r\n this.$parse = $parse;\r\n this.$attr = $attr;\r\n this.viewport = viewport;\r\n this.buffer = buffer;\r\n\r\n this.doAdjust = doAdjust;\r\n this.reload = reload;\r\n\r\n this.isLoading = false;\r\n this.disabled = false;\r\n\r\n const viewportScope = viewport.getScope();\r\n this.startScope = viewportScope.$parent ? viewportScope : $scope;\r\n\r\n this.publicContext = {};\r\n this.assignAdapter($attr.adapter);\r\n this.generatePublicContext();\r\n }\r\n\r\n assignAdapter(adapterAttr) {\r\n if (!adapterAttr || !(adapterAttr = adapterAttr.replace(/^\\s+|\\s+$/gm, ''))) {\r\n return;\r\n }\r\n let adapterOnScope;\r\n\r\n try {\r\n this.$parse(adapterAttr).assign(this.startScope, {});\r\n adapterOnScope = this.$parse(adapterAttr)(this.startScope);\r\n }\r\n catch (error) {\r\n error.message = `Angular ui-scroll Adapter assignment exception.\\n` +\r\n `Can't parse \"${adapterAttr}\" expression.\\n` +\r\n error.message;\r\n throw error;\r\n }\r\n\r\n angular.extend(adapterOnScope, this.publicContext);\r\n this.publicContext = adapterOnScope;\r\n }\r\n\r\n generatePublicContext() {\r\n // these methods will be accessible out of ui-scroll via user defined adapter\r\n const publicMethods = ['reload', 'applyUpdates', 'append', 'prepend', 'isBOF', 'isEOF', 'isEmpty'];\r\n for (let i = publicMethods.length - 1; i >= 0; i--) {\r\n this.publicContext[publicMethods[i]] = this[publicMethods[i]].bind(this);\r\n }\r\n\r\n // these read-only props will be accessible out of ui-scroll via user defined adapter\r\n const publicProps = ['isLoading', 'topVisible', 'topVisibleElement', 'topVisibleScope', 'bottomVisible', 'bottomVisibleElement', 'bottomVisibleScope'];\r\n for (let i = publicProps.length - 1; i >= 0; i--) {\r\n let property, attr = this.$attr[publicProps[i]];\r\n Object.defineProperty(this, publicProps[i], {\r\n get: () => property,\r\n set: (value) => {\r\n property = value;\r\n this.publicContext[publicProps[i]] = value;\r\n if (attr) {\r\n this.$parse(attr).assign(this.startScope, value);\r\n }\r\n }\r\n });\r\n }\r\n\r\n // non-read-only public property\r\n Object.defineProperty(this.publicContext, 'disabled', {\r\n get: () => this.disabled,\r\n set: (value) => (!(this.disabled = value)) ? this.doAdjust() : null\r\n });\r\n }\r\n\r\n loading(value) {\r\n this.isLoading = value;\r\n }\r\n\r\n isBOF() {\r\n return this.buffer.bof;\r\n }\r\n\r\n isEOF() {\r\n return this.buffer.eof;\r\n }\r\n\r\n isEmpty() {\r\n return !this.buffer.length;\r\n }\r\n\r\n append(newItems) {\r\n this.buffer.append(newItems);\r\n this.doAdjust();\r\n this.viewport.clipTop();\r\n this.viewport.clipBottom();\r\n }\r\n\r\n prepend(newItems) {\r\n this.buffer.prepend(newItems);\r\n this.doAdjust();\r\n this.viewport.clipTop();\r\n this.viewport.clipBottom();\r\n }\r\n\r\n applyUpdates(arg1, arg2) {\r\n if (typeof arg1 === 'function') {\r\n this.applyUpdatesFunc(arg1);\r\n } else {\r\n this.applyUpdatesIndex(arg1, arg2);\r\n }\r\n this.doAdjust();\r\n }\r\n\r\n applyUpdatesFunc(cb) {\r\n this.buffer.slice(0).forEach((wrapper) => {\r\n // we need to do it on the buffer clone, because buffer content\r\n // may change as we iterate through\r\n this.applyUpdate(wrapper, cb(wrapper.item, wrapper.scope, wrapper.element));\r\n });\r\n }\r\n\r\n applyUpdatesIndex(index, newItems) {\r\n if (index % 1 !== 0) {\r\n throw new Error('applyUpdates - ' + index + ' is not a valid index (should be an integer)');\r\n }\r\n const _index = index - this.buffer.first;\r\n\r\n // apply updates only within buffer\r\n if (_index >= 0 && _index < this.buffer.length) {\r\n this.applyUpdate(this.buffer[_index], newItems);\r\n }\r\n // out-of-buffer case: deletion may affect Paddings\r\n else if(index >= this.buffer.getAbsMinIndex() && index <= this.buffer.getAbsMaxIndex()) {\r\n if(angular.isArray(newItems) && !newItems.length) {\r\n this.viewport.removeCacheItem(index, index === this.buffer.minIndex);\r\n if(index === this.buffer.getAbsMinIndex()) {\r\n this.buffer.incrementMinIndex();\r\n }\r\n else {\r\n this.buffer.decrementMaxIndex();\r\n }\r\n }\r\n }\r\n }\r\n\r\n applyUpdate(wrapper, newItems) {\r\n if (!angular.isArray(newItems)) {\r\n return;\r\n }\r\n let position = this.buffer.indexOf(wrapper);\r\n if (!newItems.reverse().some(newItem => newItem === wrapper.item)) {\r\n wrapper.op = 'remove';\r\n if(position === 0 && !newItems.length) {\r\n wrapper._op = 'isTop'; // to catch \"first\" edge case on remove\r\n }\r\n }\r\n newItems.forEach((newItem) => {\r\n if (newItem === wrapper.item) {\r\n position--;\r\n } else {\r\n // 3 parameter (isTop) is to catch \"first\" edge case on insert\r\n this.buffer.insert(position + 1, newItem, position === -1);\r\n }\r\n });\r\n }\r\n\r\n calculateProperties() {\r\n let rowTop = null, topHeight = 0;\r\n let topDone = false, bottomDone = false;\r\n const length = this.buffer.length;\r\n\r\n for (let i = 0; i < length; i++) {\r\n const item = this.buffer[i];\r\n const itemTop = item.element.offset().top;\r\n\r\n if (rowTop !== itemTop) { // a new row condition\r\n const itemHeight = item.element.outerHeight(true);\r\n const top = this.viewport.topDataPos() + topHeight + itemHeight;\r\n\r\n if (!topDone && top > this.viewport.topVisiblePos()) {\r\n topDone = true;\r\n this['topVisible'] = item.item;\r\n this['topVisibleElement'] = item.element;\r\n this['topVisibleScope'] = item.scope;\r\n }\r\n if (!bottomDone && (top >= this.viewport.bottomVisiblePos() || (i === length - 1 && this.isEOF()))) {\r\n bottomDone = true;\r\n this['bottomVisible'] = item.item;\r\n this['bottomVisibleElement'] = item.element;\r\n this['bottomVisibleScope'] = item.scope;\r\n }\r\n topHeight += itemHeight;\r\n }\r\n rowTop = itemTop;\r\n\r\n if (topDone && bottomDone) {\r\n break;\r\n }\r\n }\r\n }\r\n\r\n}\r\n\r\nexport default Adapter;\r\n","import JQLiteExtras from './modules/jqLiteExtras';\nimport ElementRoutines from './modules/elementRoutines.js';\nimport ScrollBuffer from './modules/buffer.js';\nimport Viewport from './modules/viewport.js';\nimport Adapter from './modules/adapter.js';\n\nangular.module('ui.scroll', [])\n\n .constant('JQLiteExtras', JQLiteExtras)\n .run(['JQLiteExtras', (JQLiteExtras) => {\n !window.jQuery ? (new JQLiteExtras()).registerFor(angular.element) : null;\n ElementRoutines.addCSSRules();\n }])\n\n .directive('uiScrollViewport', function () {\n return {\n restrict: 'A',\n controller: [\n '$scope',\n '$element',\n function (scope, element) {\n this.container = element;\n this.viewport = element;\n this.scope = scope;\n\n angular.forEach(element.children(), child => {\n if (child.tagName.toLowerCase() === 'tbody') {\n this.viewport = angular.element(child);\n }\n });\n\n return this;\n }\n ]\n };\n })\n\n .directive('uiScroll', [\n '$log',\n '$injector',\n '$rootScope',\n '$timeout',\n '$interval',\n '$q',\n '$parse',\n function (console, $injector, $rootScope, $timeout, $interval, $q, $parse) {\n\n return {\n require: ['?^uiScrollViewport'],\n restrict: 'A',\n transclude: 'element',\n priority: 1000,\n terminal: true,\n link: link\n };\n\n function link($scope, element, $attr, controllers, linker) {\n const match = $attr.uiScroll.match(/^\\s*(\\w+)\\s+in\\s+([(\\w|\\$)\\.]+)\\s*$/);\n if (!match) {\n throw new Error('Expected uiScroll in form of \\'_item_ in _datasource_\\' but got \\'' + $attr.uiScroll + '\\'');\n }\n\n function parseNumber(value, defaultValue, isFloat) {\n if (!isFloat) {\n value = value === null ? defaultValue : Math.floor(value);\n }\n return isNaN(value) ? defaultValue : value;\n }\n\n function parseNumericAttr(value, defaultValue, isFloat) {\n const result = $parse(value)($scope);\n return parseNumber(result, defaultValue, isFloat);\n }\n\n const BUFFER_MIN = 3; // Minimum size of the data source request\n const BUFFER_DEFAULT = 10; // Default datasource request size\n const PADDING_MIN = 0.3; // Mininum # of rows in the padding area\n const PADDING_DEFAULT = 0.5; // Default # of rows in the padding area\n const START_INDEX_DEFAULT = 1; // Default start index when requestng the first data block\n const MAX_VIEWPORT_DELAY = 500; // Max time wait (ms) to get the viewport with an height>0\n const VIEWPORT_POLLING_INTERVAL = 50; // Interval used to check the initial viewport height\n\n let datasource = null;\n const itemName = match[1]; // Name of the index variable to publish\n const datasourceName = match[2]; // Name of the datasource to request the rows from\n const viewportController = controllers[0]; // ViewportController, as specified in the require option (http://websystique.com/angularjs/angularjs-custom-directives-controllers-require-option-guide/)\n const bufferSize = Math.max(BUFFER_MIN, parseNumericAttr($attr.bufferSize, BUFFER_DEFAULT)); \n const padding = Math.max(PADDING_MIN, parseNumericAttr($attr.padding, PADDING_DEFAULT, true));\n let startIndex = parseNumericAttr($attr.startIndex, START_INDEX_DEFAULT);\n\n // PHIL: Provide a fixed row height\n // \n const rowHeight = parseNumericAttr($attr.rowheight,null,false);\n\n // Revision IDs\n // \n let ridActual = 0; // current data revision id\n let pending = [];\n\n const elementRoutines = new ElementRoutines($injector, $q);\n const buffer = new ScrollBuffer(elementRoutines, bufferSize, startIndex);\n const viewport = new Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding, rowHeight);\n const adapter = new Adapter($scope, $parse, $attr, viewport, buffer, doAdjust, reload);\n\n if (viewportController) {\n viewportController.adapter = adapter;\n }\n\n const isDatasourceValid = () =>\n Object.prototype.toString.call(datasource) === '[object Object]' && typeof datasource.get === 'function';\n\n datasource = $parse(datasourceName)($scope); // try to get datasource on scope\n if (!isDatasourceValid()) {\n datasource = $injector.get(datasourceName); // try to inject datasource as service\n if (!isDatasourceValid()) {\n throw new Error(datasourceName + ' is not a valid datasource');\n }\n }\n\n let onRenderHandlers = [];\n function onRenderHandlersRunner() {\n onRenderHandlers.forEach(handler => handler.run());\n onRenderHandlers = [];\n }\n function persistDatasourceIndex(datasource, propName) {\n let getter;\n // need to postpone min/maxIndexUser processing if the view is empty\n if(angular.isNumber(datasource[propName])) {\n getter = datasource[propName];\n if(angular.isNumber(getter)) {\n onRenderHandlers = onRenderHandlers.filter(handler => handler.id !== propName);\n onRenderHandlers.push({\n id: propName,\n run: () => datasource[propName] = getter\n });\n }\n }\n }\n\n function defineDatasourceIndex(datasource, propName, propUserName) {\n const descriptor = Object.getOwnPropertyDescriptor(datasource, propName);\n if (descriptor && (descriptor.set || descriptor.get)) {\n return;\n }\n let getter;\n persistDatasourceIndex(datasource, propName);\n Object.defineProperty(datasource, propName, {\n set: (value) => {\n getter = value;\n if(pending.length && !buffer.length) {\n persistDatasourceIndex(datasource, propName);\n return;\n }\n buffer[propUserName] = value;\n const topPaddingHeightOld = viewport.topDataPos();\n viewport.adjustPaddings();\n if (propName === 'minIndex') {\n viewport.onAfterMinIndexSet(topPaddingHeightOld);\n }\n },\n get: () => getter\n });\n }\n\n defineDatasourceIndex(datasource, 'minIndex', 'minIndexUser');\n defineDatasourceIndex(datasource, 'maxIndex', 'maxIndexUser');\n\n const fetchNext = (datasource.get.length !== 2) ?\n (success) => datasource.get(buffer.next, bufferSize, success) :\n (success) => {\n datasource.get({\n index: buffer.next,\n append: buffer.length ? buffer[buffer.length - 1].item : void 0,\n count: bufferSize\n }, success);\n };\n\n const fetchPrevious = (datasource.get.length !== 2) ?\n (success) => datasource.get(buffer.first - bufferSize, bufferSize, success) :\n (success) => {\n datasource.get({\n index: buffer.first - bufferSize,\n prepend: buffer.length ? buffer[0].item : void 0,\n count: bufferSize\n }, success);\n };\n\n const initialize = () => {\n let tryCount = 0;\n if(!viewport.applyContainerStyle()) {\n const timer = $interval(() => {\n tryCount++;\n if(viewport.applyContainerStyle()) {\n $interval.cancel(timer);\n doAdjust();\n }\n if(tryCount * VIEWPORT_POLLING_INTERVAL >= MAX_VIEWPORT_DELAY) {\n $interval.cancel(timer);\n throw Error(`ui-scroll directive requires a viewport with non-zero height in ${MAX_VIEWPORT_DELAY}ms`);\n }\n }, VIEWPORT_POLLING_INTERVAL);\n }\n else {\n doAdjust();\n }\n };\n\n /**\n * Build padding elements\n *\n * Calling linker is the only way I found to get access to the tag name of the template\n * to prevent the directive scope from pollution a new scope is created and destroyed\n * right after the builder creation is completed\n */\n linker((clone, scope) => {\n viewport.createPaddingElements(clone[0]);\n // we do not include the clone in the DOM. It means that the nested directives will not\n // be able to reach the parent directives, but in this case it is intentional because we\n // created the clone to access the template tag name\n scope.$destroy();\n clone.remove();\n });\n\n $scope.$on('$destroy', () => {\n unbindEvents();\n viewport.unbind('mousewheel', wheelHandler);\n });\n\n viewport.bind('mousewheel', wheelHandler);\n\n initialize();\n\n /* Private function definitions */\n\n function isInvalid(rid) {\n return (rid && rid !== ridActual) || $scope.$$destroyed;\n }\n\n function bindEvents() {\n viewport.bind('resize', resizeAndScrollHandler);\n viewport.bind('scroll', resizeAndScrollHandler);\n }\n\n function unbindEvents() {\n viewport.unbind('resize', resizeAndScrollHandler);\n viewport.unbind('scroll', resizeAndScrollHandler);\n }\n\n function reload() {\n viewport.resetTopPadding();\n viewport.resetBottomPadding();\n if (arguments.length) {\n startIndex = parseNumber(arguments[0], START_INDEX_DEFAULT, false);\n }\n buffer.reset(startIndex);\n persistDatasourceIndex(datasource, 'minIndex');\n persistDatasourceIndex(datasource, 'maxIndex');\n doAdjust();\n }\n\n function isElementVisible(wrapper) {\n if(rowHeight) {\n return true;\n }\n return wrapper.element.height() && wrapper.element[0].offsetParent;\n }\n\n function visibilityWatcher(wrapper) {\n if (isElementVisible(wrapper)) {\n buffer.forEach((item) => {\n if (typeof item.unregisterVisibilityWatcher === 'function') {\n item.unregisterVisibilityWatcher();\n delete item.unregisterVisibilityWatcher;\n }\n });\n if (!pending.length) {\n $timeout(() => doAdjust());\n }\n }\n }\n\n function insertWrapperContent(wrapper, insertAfter) {\n createElement(wrapper, insertAfter, viewport.insertElement);\n if (!isElementVisible(wrapper)) {\n wrapper.unregisterVisibilityWatcher = wrapper.scope.$watch(() => visibilityWatcher(wrapper));\n }\n elementRoutines.hideElement(wrapper); // hide inserted elements before data binding\n }\n\n function createElement(wrapper, insertAfter, insertElement) {\n let promises = null;\n const sibling = (insertAfter > 0) ? buffer[insertAfter - 1].element : undefined;\n linker((clone, scope) => {\n promises = insertElement(clone, sibling);\n wrapper.element = clone;\n wrapper.scope = scope;\n scope[itemName] = wrapper.item;\n });\n // ui-scroll-grid apply\n if (adapter.transform) {\n const tdInitializer = wrapper.scope.uiScrollTdInitializer;\n if (tdInitializer && tdInitializer.linking) {\n adapter.transform(wrapper.scope, wrapper.element);\n } else {\n wrapper.scope.uiScrollTdInitializer = {\n onLink: () => adapter.transform(wrapper.scope, wrapper.element),\n scope: wrapper.scope\n };\n }\n }\n return promises;\n }\n\n function updateDOM() {\n let promises = [];\n const toBePrepended = [];\n const toBeRemoved = [];\n const inserted = [];\n\n buffer.forEach((wrapper, i) => {\n switch (wrapper.op) {\n case 'prepend':\n toBePrepended.unshift(wrapper);\n break;\n case 'append':\n insertWrapperContent(wrapper, i);\n wrapper.op = 'none';\n inserted.push(wrapper);\n break;\n case 'insert':\n promises = promises.concat(createElement(wrapper, i, viewport.insertElementAnimated));\n wrapper.op = 'none';\n inserted.push(wrapper);\n break;\n case 'remove':\n toBeRemoved.push(wrapper);\n }\n });\n\n toBeRemoved.forEach((wrapper) => promises = promises.concat(viewport.removeItem(wrapper)));\n\n if (toBePrepended.length)\n toBePrepended.forEach((wrapper) => {\n insertWrapperContent(wrapper);\n wrapper.op = 'none';\n });\n\n buffer.forEach((item, i) => item.scope.$index = buffer.first + i);\n\n return {\n prepended: toBePrepended,\n removed: toBeRemoved,\n inserted: inserted,\n animated: promises\n };\n\n }\n\n // Adjust the viewport paddings\n // \n function updatePaddings(rid, updates) {\n // schedule another doAdjust after animation completion\n if (updates.animated.length) {\n $q.all(updates.animated).then(() => {\n viewport.adjustPaddings();\n doAdjust(rid);\n });\n } else {\n viewport.adjustPaddings();\n }\n }\n\n function enqueueFetch(rid, updates) {\n if (viewport.shouldLoadBottom()) {\n if (!updates || buffer.effectiveHeight(updates.inserted) > 0) {\n // this means that at least one item appended in the last batch has height > 0\n if (pending.push(true) === 1) {\n adapter.loading(true);\n fetch(rid);\n }\n }\n } else if (viewport.shouldLoadTop()) {\n if ((!updates || buffer.effectiveHeight(updates.prepended) > 0) || pending[0]) {\n // this means that at least one item appended in the last batch has height > 0\n // pending[0] = true means that previous fetch was appending. We need to force at least one prepend\n // BTW there will always be at least 1 element in the pending array because bottom is fetched first\n if (pending.push(false) === 1) {\n adapter.loading(true);\n fetch(rid);\n }\n }\n }\n }\n\n function processUpdates() {\n const updates = updateDOM();\n\n // We need the item bindings to be processed before we can do adjustments\n if(!rowHeight) {\n !$scope.$$phase && !$rootScope.$$phase && $scope.$digest();\n }\n \n updates.inserted.forEach(w => elementRoutines.showElement(w));\n updates.prepended.forEach(w => elementRoutines.showElement(w));\n return updates;\n }\n\n function doAdjust(rid) {\n if (!rid) { // dismiss pending requests\n pending = [];\n rid = ++ridActual;\n }\n\n const updates = processUpdates();\n\n if (isInvalid(rid)) {\n return;\n }\n\n updatePaddings(rid, updates);\n enqueueFetch(rid);\n\n if (!pending.length) {\n adapter.calculateProperties();\n }\n }\n\n function doAdjustAfterFetch(rid) {\n const updates = processUpdates();\n\n viewport.onAfterPrepend(updates);\n\n if (isInvalid(rid)) {\n return;\n }\n\n updatePaddings(rid, updates);\n onRenderHandlersRunner();\n enqueueFetch(rid, updates);\n pending.shift();\n\n if (pending.length)\n fetch(rid);\n else {\n adapter.loading(false);\n bindEvents();\n adapter.calculateProperties();\n }\n }\n\n function fetch(rid) {\n if (pending[0]) {// scrolling down\n if (buffer.length && !viewport.shouldLoadBottom()) {\n doAdjustAfterFetch(rid);\n } else {\n fetchNext((result) => {\n if (isInvalid(rid)) {\n return;\n }\n\n if (result.length < bufferSize) {\n buffer.eof = true;\n }\n\n if (result.length > 0) {\n viewport.clipTop();\n buffer.append(result);\n }\n\n doAdjustAfterFetch(rid);\n });\n }\n } else { // scrolling up\n if (buffer.length && !viewport.shouldLoadTop()) {\n doAdjustAfterFetch(rid);\n } else {\n fetchPrevious((result) => {\n if (isInvalid(rid)) {\n return;\n }\n\n if (result.length < bufferSize) {\n buffer.bof = true;\n // log 'bof is reached'\n }\n\n if (result.length > 0) {\n if (buffer.length) {\n viewport.clipBottom();\n }\n buffer.prepend(result);\n }\n\n doAdjustAfterFetch(rid);\n });\n }\n }\n }\n\n function resizeAndScrollHandler() {\n if (!$rootScope.$$phase && !adapter.isLoading && !adapter.disabled) {\n\n enqueueFetch(ridActual);\n\n if (pending.length) {\n unbindEvents();\n } else {\n adapter.calculateProperties();\n if(!rowHeight) {\n // The digest is forced to calculate the height, which is not necessary when the height is knowm\n !$scope.$$phase && $scope.$digest();\n }\n }\n }\n }\n\n function wheelHandler(event) {\n if (!adapter.disabled) {\n const scrollTop = viewport[0].scrollTop;\n const yMax = viewport[0].scrollHeight - viewport[0].clientHeight;\n\n if ((scrollTop === 0 && !buffer.bof) || (scrollTop === yMax && !buffer.eof)) {\n event.preventDefault();\n }\n }\n }\n }\n\n }\n ]);\n"],"sourceRoot":""} \ No newline at end of file diff --git a/dist/ui-scroll.min.js b/dist/ui-scroll.min.js index 7bcb7600..8526cfad 100644 --- a/dist/ui-scroll.min.js +++ b/dist/ui-scroll.min.js @@ -1,2 +1,2 @@ -!function(n){var r={};function i(e){if(r[e])return r[e].exports;var t=r[e]={i:e,l:!1,exports:{}};return n[e].call(t.exports,t,t.exports,i),t.l=!0,t.exports}i.m=n,i.c=r,i.d=function(e,t,n){i.o(e,t)||Object.defineProperty(e,t,{enumerable:!0,get:n})},i.r=function(e){"undefined"!=typeof Symbol&&Symbol.toStringTag&&Object.defineProperty(e,Symbol.toStringTag,{value:"Module"}),Object.defineProperty(e,"__esModule",{value:!0})},i.t=function(t,e){if(1&e&&(t=i(t)),8&e)return t;if(4&e&&"object"==typeof t&&t&&t.__esModule)return t;var n=Object.create(null);if(i.r(n),Object.defineProperty(n,"default",{enumerable:!0,value:t}),2&e&&"string"!=typeof t)for(var r in t)i.d(n,r,function(e){return t[e]}.bind(null,r));return n},i.n=function(e){var t=e&&e.__esModule?function(){return e.default}:function(){return e};return i.d(t,"a",t),t},i.o=function(e,t){return Object.prototype.hasOwnProperty.call(e,t)},i.p="",i(i.s=1)}([,function(e,t,n){"use strict";function g(e,t){return function(e){if(Array.isArray(e))return e}(e)||function(e,t){var n=[],r=!0,i=!1,o=void 0;try{for(var a,s=e[Symbol.iterator]();!(r=(a=s.next()).done)&&(n.push(a.value),!t||n.length!==t);r=!0);}catch(e){i=!0,o=e}finally{try{r||null==s.return||s.return()}finally{if(i)throw o}}return n}(e,t)||function(){throw new TypeError("Invalid attempt to destructure non-iterable instance")}()}function i(e,t){for(var n=0;ni.minIndexUser)return void i.minIndexUser++;i.minIndex===i.minIndexUser&&i.minIndexUser++}i.minIndex++},decrementMaxIndex:function(){null!==i.maxIndexUser&&i.maxIndex<=i.maxIndexUser&&i.maxIndexUser--,i.maxIndex--},getAbsMinIndex:function(){return null!==i.minIndexUser?Math.min(i.minIndexUser,i.minIndex):i.minIndex},getAbsMaxIndex:function(){return null!==i.maxIndexUser?Math.max(i.maxIndexUser,i.maxIndex):i.maxIndex},effectiveHeight:function(e){if(!e.length)return 0;var t=Number.MAX_VALUE,n=Number.NEGATIVE_INFINITY;return e.forEach(function(e){e.element[0].offsetParent&&(t=Math.min(t,e.element.offset().top),n=Math.max(n,e.element.offset().top+e.element.outerHeight(!0)))}),Math.max(0,n-t)}}),i.reset(t),i}function u(e,t){if(!(e instanceof t))throw new TypeError("Cannot call a class as a function")}function l(e,t){for(var n=0;nt.index?1:0})}},{key:"remove",value:function(e,t){for(var n=e%1==0?e:e.scope.$index,r=e%1==0?t:"isTop"===e._op,i=this.length-1;0<=i;i--)if(this[i].index===n){this.splice(i,1);break}if(!r)for(var o=this.length-1;0<=o;o--)this[o].index>n&&this[o].index--}},{key:"clear",value:function(){this.length=0}}]),e}();function d(){var e=[];return e.push.apply(e,arguments),Object.setPrototypeOf(e,d.prototype),e}d.prototype=Object.create(Array.prototype),Object.getOwnPropertyNames(f.prototype).forEach(function(e){return d.prototype[e]=f.prototype[e]});var p=function(){function n(e,t){u(this,n),this.element=function(e){if(e.nodeType!==Node.ELEMENT_NODE)throw new Error("ui-scroll directive requires an Element node for templating the view");var t;switch(e.tagName.toLowerCase()){case"dl":throw new Error("ui-scroll directive does not support <".concat(e.tagName,"> as a repeating tag: ").concat(e.outerHTML));case"tr":t=angular.element("
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e===t.item})||(t.op="remove",0!==r||e.length||(t._op="isTop")),e.forEach(function(e){e===t.item?r--:n.buffer.insert(r+1,e,-1===r)})}}},{key:"calculateProperties",value:function(){for(var e=null,t=0,n=!1,r=!1,i=this.buffer.length,o=0;othis.viewport.topVisiblePos()&&(n=!0,this.topVisible=a.item,this.topVisibleElement=a.element,this.topVisibleScope=a.scope),!r&&(l>=this.viewport.bottomVisiblePos()||o===i-1&&this.isEOF())&&(r=!0,this.bottomVisible=a.item,this.bottomVisibleElement=a.element,this.bottomVisibleScope=a.scope),t+=u}if(e=s,n&&r)break}}}])&&h(e.prototype,t),n&&h(e,n),u}();angular.module("ui.scroll",[]).constant("JQLiteExtras",r).run(["JQLiteExtras",function(e){!window.jQuery&&(new e).registerFor(angular.element),Q.addCSSRules()}]).directive("uiScrollViewport",function(){return{restrict:"A",controller:["$scope","$element",function(e,t){var n=this;return this.container=t,this.viewport=t,this.scope=e,angular.forEach(t.children(),function(e){"tbody"===e.tagName.toLowerCase()&&(n.viewport=angular.element(e))}),this}]}}).directive("uiScroll",["$log","$injector","$rootScope","$timeout","$interval","$q","$parse",function(e,D,F,R,W,z,q){return{require:["?^uiScrollViewport"],restrict:"A",transclude:"element",priority:1e3,terminal:!0,link:function(i,e,t,n,a){var r=t.uiScroll.match(/^\s*(\w+)\s+in\s+([(\w|\$)\.]+)\s*$/);if(!r)throw new Error("Expected uiScroll in form of '_item_ in _datasource_' but got '"+t.uiScroll+"'");function o(e,t,n){return n||(e=null===e?t:Math.floor(e)),isNaN(e)?t:e}function s(e,t,n){var r=q(e)(i);return o(r,t,n)}var u=null,l=r[1],c=r[2],f=n[0],d=Math.max(3,s(t.bufferSize,10)),h=Math.max(.3,s(t.padding,.5,!0)),p=s(t.startIndex,1),m=s(t.rowheight,null,!1),g=0,v=[],b=new Q(D,z),x=new X(b,d,p),y=new Y(b,x,e,f,F,h,m),w=new J(i,q,t,y,x,L,function(){y.resetTopPadding(),y.resetBottomPadding(),arguments.length&&(p=o(arguments[0],1,!1));x.reset(p),$(u,"minIndex"),$(u,"maxIndex"),L()});f&&(f.adapter=w);var I=function(){return"[object Object]"===Object.prototype.toString.call(u)&&"function"==typeof u.get};if(u=q(c)(i),!I()&&(u=D.get(c),!I()))throw new Error(c+" is not a valid datasource");var E=[];function $(e,t){var n;angular.isNumber(e[t])&&(n=e[t],angular.isNumber(n)&&(E=E.filter(function(e){return e.id!==t})).push({id:t,run:function(){return e[t]=n}}))}function P(n,r,i){var o,e=Object.getOwnPropertyDescriptor(n,r);e&&(e.set||e.get)||($(n,r),Object.defineProperty(n,r,{set:function(e){if(o=e,!v.length||x.length){x[i]=e;var t=y.topDataPos();y.adjustPaddings(),"minIndex"===r&&y.onAfterMinIndexSet(t)}else $(n,r)},get:function(){return o}}))}P(u,"minIndex","minIndexUser"),P(u,"maxIndex","maxIndexUser");var T=2!==u.get.length?function(e){return u.get(x.next,d,e)}:function(e){u.get({index:x.next,append:x.length?x[x.length-1].item:void 0,count:d},e)},S=2!==u.get.length?function(e){return u.get(x.first-d,d,e)}:function(e){u.get({index:x.first-d,prepend:x.length?x[0].item:void 0,count:d},e)};function k(e){return e&&e!==g||i.$$destroyed}function A(){y.unbind("resize",N),y.unbind("scroll",N)}function O(e){return!!m||e.element.height()&&e.element[0].offsetParent}function j(e,t){U(e,t,y.insertElement),O(e)||(e.unregisterVisibilityWatcher=e.scope.$watch(function(){O(e)&&(x.forEach(function(e){"function"==typeof e.unregisterVisibilityWatcher&&(e.unregisterVisibilityWatcher(),delete e.unregisterVisibilityWatcher)}),v.length||R(function(){return L()}))})),b.hideElement(e)}function U(n,e,r){var i=null,o=0 obj && obj.document && obj.location && obj.alert && obj.setInterval;\r\n\r\n function scrollTo(self, direction, value) {\r\n let elem = self[0];\r\n let [method, prop, preserve] = {\r\n top: [\r\n 'scrollTop',\r\n 'pageYOffset',\r\n 'scrollLeft'\r\n ],\r\n left: [\r\n 'scrollLeft',\r\n 'pageXOffset',\r\n 'scrollTop'\r\n ]\r\n }[direction];\r\n\r\n const isValueDefined = typeof value !== 'undefined';\r\n if (isWindow(elem)) {\r\n if (isValueDefined) {\r\n return elem.scrollTo(self[preserve].call(self), value);\r\n }\r\n return (prop in elem) ? elem[prop] : elem.document.documentElement[method];\r\n } else {\r\n if (isValueDefined) {\r\n elem[method] = value;\r\n }\r\n return elem[method];\r\n }\r\n }\r\n\r\n if (window.getComputedStyle) {\r\n getStyle = (elem) => window.getComputedStyle(elem, null);\r\n convertToPx = (elem, value) => parseFloat(value);\r\n } else {\r\n getStyle = (elem) => elem.currentStyle;\r\n convertToPx = (elem, value) => {\r\n let left, result, rs, rsLeft, style;\r\n let core_pnum = /[+-]?(?:\\d*\\.|)\\d+(?:[eE][+-]?\\d+|)/.source;\r\n let rnumnonpx = new RegExp('^(' + core_pnum + ')(?!px)[a-z%]+$', 'i');\r\n\r\n if (!rnumnonpx.test(value)) {\r\n return parseFloat(value);\r\n }\r\n\r\n // ported from JQuery\r\n style = elem.style;\r\n left = style.left;\r\n rs = elem.runtimeStyle;\r\n rsLeft = rs && rs.left;\r\n if (rs) {\r\n rs.left = style.left;\r\n }\r\n // put in the new values to get a computed style out\r\n style.left = value;\r\n result = style.pixelLeft;\r\n style.left = left;\r\n if (rsLeft) {\r\n rs.left = rsLeft;\r\n }\r\n return result;\r\n };\r\n }\r\n\r\n function getMeasurements(elem, measure) {\r\n let base, borderA, borderB, computedMarginA, computedMarginB, computedStyle, dirA, dirB, marginA, marginB, paddingA, paddingB;\r\n\r\n if (isWindow(elem)) {\r\n base = document.documentElement[{height: 'clientHeight', width: 'clientWidth'}[measure]];\r\n\r\n return {\r\n base: base,\r\n padding: 0,\r\n border: 0,\r\n margin: 0\r\n };\r\n }\r\n\r\n // Start with offset property\r\n [\r\n base,\r\n dirA,\r\n dirB\r\n ] = {\r\n width: [\r\n elem.offsetWidth,\r\n 'Left',\r\n 'Right'\r\n ],\r\n height: [\r\n elem.offsetHeight,\r\n 'Top',\r\n 'Bottom'\r\n ]\r\n }[measure];\r\n\r\n computedStyle = getStyle(elem);\r\n paddingA = convertToPx(elem, computedStyle['padding' + dirA]) || 0;\r\n paddingB = convertToPx(elem, computedStyle['padding' + dirB]) || 0;\r\n borderA = convertToPx(elem, computedStyle['border' + dirA + 'Width']) || 0;\r\n borderB = convertToPx(elem, computedStyle['border' + dirB + 'Width']) || 0;\r\n computedMarginA = computedStyle['margin' + dirA];\r\n computedMarginB = computedStyle['margin' + dirB];\r\n\r\n // I do not care for width for now, so this hack is irrelevant\r\n // if ( !supportsPercentMargin )\r\n // computedMarginA = hackPercentMargin( elem, computedStyle, computedMarginA )\r\n // computedMarginB = hackPercentMargin( elem, computedStyle, computedMarginB )\r\n marginA = convertToPx(elem, computedMarginA) || 0;\r\n marginB = convertToPx(elem, computedMarginB) || 0;\r\n\r\n return {\r\n base: base,\r\n padding: paddingA + paddingB,\r\n border: borderA + borderB,\r\n margin: marginA + marginB\r\n };\r\n }\r\n\r\n function getWidthHeight(elem, direction, measure) {\r\n let computedStyle, result;\r\n\r\n let measurements = getMeasurements(elem, direction);\r\n\r\n if (measurements.base > 0) {\r\n return {\r\n base: measurements.base - measurements.padding - measurements.border,\r\n outer: measurements.base,\r\n outerfull: measurements.base + measurements.margin\r\n }[measure];\r\n }\r\n\r\n // Fall back to computed then uncomputed css if necessary\r\n computedStyle = getStyle(elem);\r\n result = computedStyle[direction];\r\n\r\n if (result < 0 || result === null) {\r\n result = elem.style[direction] || 0;\r\n }\r\n\r\n // Normalize \"\", auto, and prepare for extra\r\n result = parseFloat(result) || 0;\r\n\r\n return {\r\n base: result - measurements.padding - measurements.border,\r\n outer: result,\r\n outerfull: result + measurements.padding + measurements.border + measurements.margin\r\n }[measure];\r\n }\r\n\r\n // define missing methods\r\n return angular.forEach({\r\n before(newElem) {\r\n var children, elem, i, j, parent, ref, self;\r\n self = this;\r\n elem = self[0];\r\n parent = self.parent();\r\n children = parent.contents();\r\n if (children[0] === elem) {\r\n return parent.prepend(newElem);\r\n } else {\r\n for (i = j = 1, ref = children.length - 1; 1 <= ref ? j <= ref : j >= ref; i = 1 <= ref ? ++j : --j) {\r\n if (children[i] === elem) {\r\n angular.element(children[i - 1]).after(newElem);\r\n return;\r\n }\r\n }\r\n throw new Error('invalid DOM structure ' + elem.outerHTML);\r\n }\r\n },\r\n height (value){\r\n var self;\r\n self = this;\r\n if (typeof value !== 'undefined') {\r\n if (angular.isNumber(value)) {\r\n value = value + 'px';\r\n }\r\n return css.call(self, 'height', value);\r\n } else {\r\n return getWidthHeight(this[0], 'height', 'base');\r\n }\r\n },\r\n outerHeight(option) {\r\n return getWidthHeight(this[0], 'height', option ? 'outerfull' : 'outer');\r\n },\r\n outerWidth(option) {\r\n return getWidthHeight(this[0], 'width', option ? 'outerfull' : 'outer');\r\n },\r\n\r\n /*\r\n The offset setter method is not implemented\r\n */\r\n offset(value) {\r\n let docElem, win;\r\n let self = this;\r\n let box = {\r\n top: 0,\r\n left: 0\r\n };\r\n let elem = self[0];\r\n let doc = elem && elem.ownerDocument;\r\n\r\n if (arguments.length) {\r\n if (value === undefined) {\r\n return self;\r\n }\r\n // TODO: implement setter\r\n throw new Error('offset setter method is not implemented');\r\n }\r\n\r\n if (!doc) {\r\n return;\r\n }\r\n\r\n docElem = doc.documentElement;\r\n\r\n // TODO: Make sure it's not a disconnected DOM node\r\n\r\n if (elem.getBoundingClientRect != null) {\r\n box = elem.getBoundingClientRect();\r\n }\r\n\r\n win = doc.defaultView || doc.parentWindow;\r\n\r\n return {\r\n top: box.top + (win.pageYOffset || docElem.scrollTop) - (docElem.clientTop || 0),\r\n left: box.left + (win.pageXOffset || docElem.scrollLeft) - (docElem.clientLeft || 0)\r\n };\r\n },\r\n scrollTop(value) {\r\n return scrollTo(this, 'top', value);\r\n },\r\n scrollLeft(value) {\r\n return scrollTo(this, 'left', value);\r\n }\r\n }, (value, key) => {\r\n if (!element.prototype[key]) {\r\n return element.prototype[key] = value;\r\n }\r\n });\r\n }\r\n\r\n}\r\n","const hideClassToken = 'ng-ui-scroll-hide';\r\n\r\nexport default class ElementRoutines {\r\n\r\n static addCSSRules() {\r\n const selector = '.' + hideClassToken;\r\n const rules = 'display: none';\r\n const sheet = document.styleSheets[0];\r\n let index;\r\n try {\r\n index = sheet.cssRules.length;\r\n } catch (err) {\r\n index = 0;\r\n }\r\n if('insertRule' in sheet) {\r\n sheet.insertRule(selector + '{' + rules + '}', index);\r\n }\r\n else if('addRule' in sheet) {\r\n sheet.addRule(selector, rules, index);\r\n }\r\n }\r\n\r\n constructor($injector, $q) {\r\n this.$animate = ($injector.has && $injector.has('$animate')) ? $injector.get('$animate') : null;\r\n this.isAngularVersionLessThen1_3 = angular.version.major === 1 && angular.version.minor < 3;\r\n this.$q = $q;\r\n }\r\n\r\n hideElement(wrapper) {\r\n wrapper.element.addClass(hideClassToken);\r\n }\r\n\r\n showElement(wrapper) {\r\n wrapper.element.removeClass(hideClassToken);\r\n }\r\n\r\n insertElement(newElement, previousElement) {\r\n previousElement.after(newElement);\r\n return [];\r\n }\r\n\r\n removeElement(wrapper) {\r\n wrapper.element.remove();\r\n wrapper.scope.$destroy();\r\n return [];\r\n }\r\n\r\n insertElementAnimated(newElement, previousElement) {\r\n if (!this.$animate) {\r\n return this.insertElement(newElement, previousElement);\r\n }\r\n\r\n if (this.isAngularVersionLessThen1_3) {\r\n const deferred = this.$q.defer();\r\n // no need for parent - previous element is never null\r\n this.$animate.enter(newElement, null, previousElement, () => deferred.resolve());\r\n\r\n return [deferred.promise];\r\n }\r\n\r\n // no need for parent - previous element is never null\r\n return [this.$animate.enter(newElement, null, previousElement)];\r\n }\r\n\r\n removeElementAnimated(wrapper) {\r\n if (!this.$animate) {\r\n return this.removeElement(wrapper);\r\n }\r\n\r\n if (this.isAngularVersionLessThen1_3) {\r\n const deferred = this.$q.defer();\r\n this.$animate.leave(wrapper.element, () => {\r\n wrapper.scope.$destroy();\r\n return deferred.resolve();\r\n });\r\n\r\n return [deferred.promise];\r\n }\r\n\r\n return [(this.$animate.leave(wrapper.element)).then(() => wrapper.scope.$destroy())];\r\n }\r\n}","export default function ScrollBuffer(elementRoutines, bufferSize, startIndex) {\r\n const buffer = Object.create(Array.prototype);\r\n\r\n angular.extend(buffer, {\r\n size: bufferSize,\r\n\r\n reset(startIndex) {\r\n buffer.remove(0, buffer.length);\r\n buffer.eof = false;\r\n buffer.bof = false;\r\n buffer.first = startIndex;\r\n buffer.next = startIndex;\r\n buffer.minIndex = startIndex;\r\n buffer.maxIndex = startIndex;\r\n buffer.minIndexUser = null;\r\n buffer.maxIndexUser = null;\r\n },\r\n\r\n append(items) {\r\n items.forEach((item) => {\r\n ++buffer.next;\r\n buffer.insert('append', item);\r\n });\r\n buffer.maxIndex = buffer.eof ? buffer.next - 1 : Math.max(buffer.next - 1, buffer.maxIndex);\r\n },\r\n\r\n prepend(items) {\r\n items.reverse().forEach((item) => {\r\n --buffer.first;\r\n buffer.insert('prepend', item);\r\n });\r\n buffer.minIndex = buffer.bof ? buffer.minIndex = buffer.first : Math.min(buffer.first, buffer.minIndex);\r\n },\r\n\r\n /**\r\n * inserts wrapped element in the buffer\r\n * the first argument is either operation keyword (see below) or a number for operation 'insert'\r\n * for insert the number is the index for the buffer element the new one have to be inserted after\r\n * operations: 'append', 'prepend', 'insert', 'remove', 'update', 'none'\r\n */\r\n insert(operation, item, isTop) {\r\n const wrapper = {\r\n item: item\r\n };\r\n\r\n if (operation % 1 === 0) {// it is an insert\r\n wrapper.op = 'insert';\r\n buffer.splice(operation, 0, wrapper);\r\n if(isTop) {\r\n buffer.first--;\r\n }\r\n else {\r\n buffer.next++;\r\n }\r\n } else {\r\n wrapper.op = operation;\r\n switch (operation) {\r\n case 'append':\r\n buffer.push(wrapper);\r\n break;\r\n case 'prepend':\r\n buffer.unshift(wrapper);\r\n break;\r\n }\r\n }\r\n },\r\n\r\n // removes elements from buffer\r\n remove(arg1, arg2) {\r\n if (angular.isNumber(arg1)) {\r\n // removes items from arg1 (including) through arg2 (excluding)\r\n for (let i = arg1; i < arg2; i++) {\r\n elementRoutines.removeElement(buffer[i]);\r\n }\r\n return buffer.splice(arg1, arg2 - arg1);\r\n }\r\n // removes single item(wrapper) from the buffer\r\n buffer.splice(buffer.indexOf(arg1), 1);\r\n if(arg1._op === 'isTop' && buffer.first === this.getAbsMinIndex()) {\r\n this.incrementMinIndex();\r\n }\r\n else {\r\n this.decrementMaxIndex();\r\n }\r\n if(arg1._op === 'isTop') {\r\n buffer.first++;\r\n }\r\n else {\r\n buffer.next--;\r\n }\r\n if(!buffer.length) {\r\n buffer.first = 1;\r\n buffer.next = 1;\r\n }\r\n\r\n return elementRoutines.removeElementAnimated(arg1);\r\n },\r\n\r\n incrementMinIndex() {\r\n if(buffer.minIndexUser !== null) {\r\n if(buffer.minIndex > buffer.minIndexUser) {\r\n buffer.minIndexUser++;\r\n return;\r\n }\r\n if(buffer.minIndex === buffer.minIndexUser) {\r\n buffer.minIndexUser++;\r\n }\r\n }\r\n buffer.minIndex++;\r\n },\r\n\r\n decrementMaxIndex() {\r\n if(buffer.maxIndexUser !== null && buffer.maxIndex <= buffer.maxIndexUser) {\r\n buffer.maxIndexUser--;\r\n }\r\n buffer.maxIndex--;\r\n },\r\n\r\n getAbsMinIndex() {\r\n if(buffer.minIndexUser !== null) {\r\n return Math.min(buffer.minIndexUser, buffer.minIndex);\r\n }\r\n return buffer.minIndex;\r\n },\r\n\r\n getAbsMaxIndex() {\r\n if(buffer.maxIndexUser !== null) {\r\n return Math.max(buffer.maxIndexUser, buffer.maxIndex);\r\n }\r\n return buffer.maxIndex;\r\n },\r\n\r\n effectiveHeight(elements) {\r\n if (!elements.length) {\r\n return 0;\r\n }\r\n let top = Number.MAX_VALUE;\r\n let bottom = Number.NEGATIVE_INFINITY;\r\n elements.forEach((wrapper) => {\r\n if (wrapper.element[0].offsetParent) {\r\n // element style is not display:none\r\n top = Math.min(top, wrapper.element.offset().top);\r\n bottom = Math.max(bottom, wrapper.element.offset().top + wrapper.element.outerHeight(true));\r\n }\r\n });\r\n return Math.max(0, bottom - top);\r\n }\r\n\r\n });\r\n\r\n buffer.reset(startIndex);\r\n\r\n return buffer;\r\n}\r\n","// Can't just extend the Array, due to Babel does not support built-in classes extending\r\n// This solution was taken from https://stackoverflow.com/questions/46897414/es6-class-extends-array-workaround-for-es5-babel-transpile\r\nclass CacheProto {\r\n add(item) {\r\n for (let i = this.length - 1; i >= 0; i--) {\r\n if (this[i].index === item.scope.$index) {\r\n this[i].height = this.rowHeight || item.element.outerHeight();\r\n return;\r\n }\r\n }\r\n this.push({\r\n index: item.scope.$index,\r\n height: this.rowHeight || item.element.outerHeight()\r\n });\r\n this.sort((a, b) => ((a.index < b.index) ? -1 : ((a.index > b.index) ? 1 : 0)));\r\n }\r\n\r\n remove(argument, _isTop) {\r\n const index = argument % 1 === 0 ? argument : argument.scope.$index;\r\n const isTop = argument % 1 === 0 ? _isTop : argument._op === 'isTop';\r\n for (let i = this.length - 1; i >= 0; i--) {\r\n if (this[i].index === index) {\r\n this.splice(i, 1);\r\n break;\r\n }\r\n }\r\n if(!isTop) {\r\n for (let i = this.length - 1; i >= 0; i--) {\r\n if (this[i].index > index) {\r\n this[i].index--;\r\n }\r\n }\r\n }\r\n }\r\n\r\n clear() {\r\n this.length = 0;\r\n }\r\n}\r\n\r\nfunction Cache() {\r\n const instance = [];\r\n instance.push.apply(instance, arguments);\r\n Object.setPrototypeOf(instance, Cache.prototype);\r\n return instance;\r\n}\r\nCache.prototype = Object.create(Array.prototype);\r\nObject.getOwnPropertyNames(CacheProto.prototype).forEach(methodName =>\r\n Cache.prototype[methodName] = CacheProto.prototype[methodName]\r\n);\r\n\r\nfunction generateElement(template) {\r\n if(template.nodeType !== Node.ELEMENT_NODE) {\r\n throw new Error('ui-scroll directive requires an Element node for templating the view');\r\n }\r\n let element;\r\n switch (template.tagName.toLowerCase()) {\r\n case 'dl':\r\n throw new Error(`ui-scroll directive does not support <${template.tagName}> as a repeating tag: ${template.outerHTML}`);\r\n case 'tr':\r\n let table = angular.element('
    ');\r\n element = table.find('tr');\r\n break;\r\n case 'li':\r\n element = angular.element('
  • ');\r\n break;\r\n default:\r\n element = angular.element('
    ');\r\n }\r\n return element;\r\n}\r\n\r\nclass Padding {\r\n constructor(template,rowHeight) {\r\n this.element = generateElement(template);\r\n this.cache = new Cache();\r\n this.cache.rowHeight = rowHeight;\r\n }\r\n\r\n height() {\r\n // When called wit a parameter, this sets the height of the padding\r\n return this.element.height.apply(this.element, arguments);\r\n }\r\n}\r\n\r\nexport default Padding;","import Padding from './padding';\r\n\r\nexport default function Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding, rowHeight) {\r\n let topPadding = null;\r\n let bottomPadding = null;\r\n const viewport = viewportController && viewportController.viewport ? viewportController.viewport : angular.element(window);\r\n const container = viewportController && viewportController.container ? viewportController.container : undefined;\r\n const scope = viewportController && viewportController.scope ? viewportController.scope : $rootScope;\r\n\r\n viewport.css({\r\n 'overflow-anchor': 'none',\r\n 'overflow-y': 'auto',\r\n 'display': 'block'\r\n });\r\n\r\n function bufferPadding() {\r\n return viewport.outerHeight() * padding; // some extra space to initiate preload\r\n }\r\n\r\n angular.extend(viewport, {\r\n getScope() {\r\n return scope;\r\n },\r\n\r\n createPaddingElements(template) {\r\n topPadding = new Padding(template,rowHeight);\r\n bottomPadding = new Padding(template,rowHeight);\r\n element.before(topPadding.element);\r\n element.after(bottomPadding.element);\r\n topPadding.height(0);\r\n bottomPadding.height(0);\r\n },\r\n\r\n applyContainerStyle() {\r\n if (!container) {\r\n return true;\r\n }\r\n if(container !== viewport) {\r\n viewport.css('height', window.getComputedStyle(container[0]).height);\r\n }\r\n return viewport.height() > 0;\r\n },\r\n\r\n bottomDataPos() {\r\n let scrollHeight = viewport[0].scrollHeight;\r\n scrollHeight = scrollHeight != null ? scrollHeight : viewport[0].document.documentElement.scrollHeight;\r\n return scrollHeight - bottomPadding.height();\r\n },\r\n\r\n topDataPos() {\r\n return topPadding.height();\r\n },\r\n\r\n bottomVisiblePos() {\r\n return viewport.scrollTop() + viewport.outerHeight();\r\n },\r\n\r\n topVisiblePos() {\r\n return viewport.scrollTop();\r\n },\r\n\r\n insertElement(e, sibling) {\r\n return elementRoutines.insertElement(e, sibling || topPadding.element);\r\n },\r\n\r\n insertElementAnimated(e, sibling) {\r\n return elementRoutines.insertElementAnimated(e, sibling || topPadding.element);\r\n },\r\n\r\n shouldLoadBottom() {\r\n return !buffer.eof && viewport.bottomDataPos() < viewport.bottomVisiblePos() + bufferPadding();\r\n },\r\n\r\n clipBottom() {\r\n // clip the invisible items off the bottom\r\n let overage = 0;\r\n let overageHeight = 0;\r\n let itemHeight = 0;\r\n let emptySpaceHeight = viewport.bottomDataPos() - viewport.bottomVisiblePos() - bufferPadding();\r\n\r\n // Simple calculation now using the fixed rowHeight if available.\r\n // Might be optimized if needed\r\n for (let i = buffer.length - 1; i >= 0; i--) {\r\n itemHeight = rowHeight ? rowHeight : buffer[i].element.outerHeight(true);\r\n if (overageHeight + itemHeight > emptySpaceHeight) {\r\n break;\r\n }\r\n bottomPadding.cache.add(buffer[i]);\r\n overageHeight += itemHeight;\r\n overage++;\r\n }\r\n\r\n if (overage > 0) {\r\n buffer.eof = false;\r\n buffer.remove(buffer.length - overage, buffer.length);\r\n buffer.next -= overage;\r\n viewport.adjustPaddings();\r\n }\r\n },\r\n\r\n shouldLoadTop() {\r\n return !buffer.bof && (viewport.topDataPos() > viewport.topVisiblePos() - bufferPadding());\r\n },\r\n\r\n clipTop() {\r\n // clip the invisible items off the top\r\n let overage = 0;\r\n let overageHeight = 0;\r\n let itemHeight = 0;\r\n let emptySpaceHeight = viewport.topVisiblePos() - viewport.topDataPos() - bufferPadding();\r\n\r\n // Simple calculation now using the fixed rowHeight if available.\r\n // Might be optimized if needed\r\n for (let i = 0; i < buffer.length; i++) {\r\n itemHeight = rowHeight ? rowHeight : buffer[i].element.outerHeight(true);\r\n if (overageHeight + itemHeight > emptySpaceHeight) {\r\n break;\r\n }\r\n topPadding.cache.add(buffer[i]);\r\n overageHeight += itemHeight;\r\n overage++;\r\n }\r\n\r\n if (overage > 0) {\r\n // we need to adjust top padding element before items are removed from top\r\n // to avoid strange behaviour of scroll bar during remove top items when we are at the very bottom\r\n topPadding.height(topPadding.height() + overageHeight);\r\n buffer.bof = false;\r\n buffer.remove(0, overage);\r\n buffer.first += overage;\r\n }\r\n },\r\n\r\n adjustPaddings() {\r\n if (!buffer.length) {\r\n return;\r\n }\r\n\r\n // precise heights calculation based on items that are in buffer or that were in buffer once\r\n // outerHeight(true) == [height+ padding + border + margin]\r\n // The calculation bellow can certainly be replaced by:\r\n // const visibleItemsHeight = rowHeight ? rowHeight * buffer.length\r\n // : buffer.reduce((summ, item) => summ + item.element.outerHeight(true), 0);\r\n const visibleItemsHeight = buffer.reduce((summ, item) => summ + (rowHeight ? rowHeight : item.element.outerHeight(true)), 0);\r\n\r\n // Sinlarly, the calculation of the paddings (top & bottom) can certanly be optimizez\r\n let topPaddingHeight = 0, topCount = 0;\r\n topPadding.cache.forEach(item => {\r\n if(item.index < buffer.first) {\r\n topPaddingHeight += item.height; // outerHeight(true) is actually stored in this data member\r\n topCount++;\r\n }\r\n });\r\n\r\n let bottomPaddingHeight = 0, bottomCount = 0;\r\n bottomPadding.cache.forEach(item => {\r\n if(item.index >= buffer.next) {\r\n bottomPaddingHeight += item.height; // outerHeight(true) is actually stored in this data member\r\n bottomCount++;\r\n }\r\n });\r\n\r\n const totalHeight = visibleItemsHeight + topPaddingHeight + bottomPaddingHeight;\r\n const averageItemHeight = totalHeight / (topCount + bottomCount + buffer.length);\r\n\r\n // average heights calculation, items that have never been reached\r\n let adjustTopPadding = buffer.minIndexUser !== null && buffer.minIndex > buffer.minIndexUser;\r\n let adjustBottomPadding = buffer.maxIndexUser !== null && buffer.maxIndex < buffer.maxIndexUser;\r\n let topPaddingHeightAdd = adjustTopPadding ? (buffer.minIndex - buffer.minIndexUser) * averageItemHeight : 0;\r\n let bottomPaddingHeightAdd = adjustBottomPadding ? (buffer.maxIndexUser - buffer.maxIndex) * averageItemHeight : 0;\r\n\r\n // paddings combine adjustment\r\n topPadding.height(topPaddingHeight + topPaddingHeightAdd);\r\n bottomPadding.height(bottomPaddingHeight + bottomPaddingHeightAdd);\r\n },\r\n\r\n onAfterMinIndexSet(topPaddingHeightOld) {\r\n // additional scrollTop adjustment in case of datasource.minIndex external set\r\n if (buffer.minIndexUser !== null && buffer.minIndex > buffer.minIndexUser) {\r\n let diff = topPadding.height() - topPaddingHeightOld;\r\n viewport.scrollTop(viewport.scrollTop() + diff);\r\n while((diff -= viewport.scrollTop()) > 0) {\r\n bottomPadding.height(bottomPadding.height() + diff);\r\n viewport.scrollTop(viewport.scrollTop() + diff);\r\n }\r\n }\r\n },\r\n\r\n onAfterPrepend(updates) {\r\n if (!updates.prepended.length)\r\n return;\r\n const height = buffer.effectiveHeight(updates.prepended);\r\n const paddingHeight = topPadding.height() - height;\r\n if (paddingHeight >= 0) {\r\n topPadding.height(paddingHeight);\r\n }\r\n else {\r\n topPadding.height(0);\r\n viewport.scrollTop(viewport.scrollTop() - paddingHeight);\r\n }\r\n },\r\n\r\n resetTopPadding() {\r\n topPadding.height(0);\r\n topPadding.cache.clear();\r\n },\r\n\r\n resetBottomPadding() {\r\n bottomPadding.height(0);\r\n bottomPadding.cache.clear();\r\n },\r\n\r\n removeCacheItem(item, isTop) {\r\n topPadding.cache.remove(item, isTop);\r\n bottomPadding.cache.remove(item, isTop);\r\n },\r\n\r\n removeItem(item) {\r\n this.removeCacheItem(item);\r\n return buffer.remove(item);\r\n }\r\n });\r\n\r\n return viewport;\r\n}\r\n","class Adapter {\r\n\r\n constructor($scope, $parse, $attr, viewport, buffer, doAdjust, reload) {\r\n this.$parse = $parse;\r\n this.$attr = $attr;\r\n this.viewport = viewport;\r\n this.buffer = buffer;\r\n\r\n this.doAdjust = doAdjust;\r\n this.reload = reload;\r\n\r\n this.isLoading = false;\r\n this.disabled = false;\r\n\r\n const viewportScope = viewport.getScope();\r\n this.startScope = viewportScope.$parent ? viewportScope : $scope;\r\n\r\n this.publicContext = {};\r\n this.assignAdapter($attr.adapter);\r\n this.generatePublicContext();\r\n }\r\n\r\n assignAdapter(adapterAttr) {\r\n if (!adapterAttr || !(adapterAttr = adapterAttr.replace(/^\\s+|\\s+$/gm, ''))) {\r\n return;\r\n }\r\n let adapterOnScope;\r\n\r\n try {\r\n this.$parse(adapterAttr).assign(this.startScope, {});\r\n adapterOnScope = this.$parse(adapterAttr)(this.startScope);\r\n }\r\n catch (error) {\r\n error.message = `Angular ui-scroll Adapter assignment exception.\\n` +\r\n `Can't parse \"${adapterAttr}\" expression.\\n` +\r\n error.message;\r\n throw error;\r\n }\r\n\r\n angular.extend(adapterOnScope, this.publicContext);\r\n this.publicContext = adapterOnScope;\r\n }\r\n\r\n generatePublicContext() {\r\n // these methods will be accessible out of ui-scroll via user defined adapter\r\n const publicMethods = ['reload', 'applyUpdates', 'append', 'prepend', 'isBOF', 'isEOF', 'isEmpty'];\r\n for (let i = publicMethods.length - 1; i >= 0; i--) {\r\n this.publicContext[publicMethods[i]] = this[publicMethods[i]].bind(this);\r\n }\r\n\r\n // these read-only props will be accessible out of ui-scroll via user defined adapter\r\n const publicProps = ['isLoading', 'topVisible', 'topVisibleElement', 'topVisibleScope', 'bottomVisible', 'bottomVisibleElement', 'bottomVisibleScope'];\r\n for (let i = publicProps.length - 1; i >= 0; i--) {\r\n let property, attr = this.$attr[publicProps[i]];\r\n Object.defineProperty(this, publicProps[i], {\r\n get: () => property,\r\n set: (value) => {\r\n property = value;\r\n this.publicContext[publicProps[i]] = value;\r\n if (attr) {\r\n this.$parse(attr).assign(this.startScope, value);\r\n }\r\n }\r\n });\r\n }\r\n\r\n // non-read-only public property\r\n Object.defineProperty(this.publicContext, 'disabled', {\r\n get: () => this.disabled,\r\n set: (value) => (!(this.disabled = value)) ? this.doAdjust() : null\r\n });\r\n }\r\n\r\n loading(value) {\r\n this.isLoading = value;\r\n }\r\n\r\n isBOF() {\r\n return this.buffer.bof;\r\n }\r\n\r\n isEOF() {\r\n return this.buffer.eof;\r\n }\r\n\r\n isEmpty() {\r\n return !this.buffer.length;\r\n }\r\n\r\n append(newItems) {\r\n this.buffer.append(newItems);\r\n this.doAdjust();\r\n this.viewport.clipTop();\r\n this.viewport.clipBottom();\r\n }\r\n\r\n prepend(newItems) {\r\n this.buffer.prepend(newItems);\r\n this.doAdjust();\r\n this.viewport.clipTop();\r\n this.viewport.clipBottom();\r\n }\r\n\r\n applyUpdates(arg1, arg2) {\r\n if (typeof arg1 === 'function') {\r\n this.applyUpdatesFunc(arg1);\r\n } else {\r\n this.applyUpdatesIndex(arg1, arg2);\r\n }\r\n this.doAdjust();\r\n }\r\n\r\n applyUpdatesFunc(cb) {\r\n this.buffer.slice(0).forEach((wrapper) => {\r\n // we need to do it on the buffer clone, because buffer content\r\n // may change as we iterate through\r\n this.applyUpdate(wrapper, cb(wrapper.item, wrapper.scope, wrapper.element));\r\n });\r\n }\r\n\r\n applyUpdatesIndex(index, newItems) {\r\n if (index % 1 !== 0) {\r\n throw new Error('applyUpdates - ' + index + ' is not a valid index (should be an integer)');\r\n }\r\n const _index = index - this.buffer.first;\r\n\r\n // apply updates only within buffer\r\n if (_index >= 0 && _index < this.buffer.length) {\r\n this.applyUpdate(this.buffer[_index], newItems);\r\n }\r\n // out-of-buffer case: deletion may affect Paddings\r\n else if(index >= this.buffer.getAbsMinIndex() && index <= this.buffer.getAbsMaxIndex()) {\r\n if(angular.isArray(newItems) && !newItems.length) {\r\n this.viewport.removeCacheItem(index, index === this.buffer.minIndex);\r\n if(index === this.buffer.getAbsMinIndex()) {\r\n this.buffer.incrementMinIndex();\r\n }\r\n else {\r\n this.buffer.decrementMaxIndex();\r\n }\r\n }\r\n }\r\n }\r\n\r\n applyUpdate(wrapper, newItems) {\r\n if (!angular.isArray(newItems)) {\r\n return;\r\n }\r\n let position = this.buffer.indexOf(wrapper);\r\n if (!newItems.reverse().some(newItem => newItem === wrapper.item)) {\r\n wrapper.op = 'remove';\r\n if(position === 0 && !newItems.length) {\r\n wrapper._op = 'isTop'; // to catch \"first\" edge case on remove\r\n }\r\n }\r\n newItems.forEach((newItem) => {\r\n if (newItem === wrapper.item) {\r\n position--;\r\n } else {\r\n // 3 parameter (isTop) is to catch \"first\" edge case on insert\r\n this.buffer.insert(position + 1, newItem, position === -1);\r\n }\r\n });\r\n }\r\n\r\n calculateProperties() {\r\n let rowTop = null, topHeight = 0;\r\n let topDone = false, bottomDone = false;\r\n const length = this.buffer.length;\r\n\r\n for (let i = 0; i < length; i++) {\r\n const item = this.buffer[i];\r\n const itemTop = item.element.offset().top;\r\n\r\n if (rowTop !== itemTop) { // a new row condition\r\n const itemHeight = item.element.outerHeight(true);\r\n const top = this.viewport.topDataPos() + topHeight + itemHeight;\r\n\r\n if (!topDone && top > this.viewport.topVisiblePos()) {\r\n topDone = true;\r\n this['topVisible'] = item.item;\r\n this['topVisibleElement'] = item.element;\r\n this['topVisibleScope'] = item.scope;\r\n }\r\n if (!bottomDone && (top >= this.viewport.bottomVisiblePos() || (i === length - 1 && this.isEOF()))) {\r\n bottomDone = true;\r\n this['bottomVisible'] = item.item;\r\n this['bottomVisibleElement'] = item.element;\r\n this['bottomVisibleScope'] = item.scope;\r\n }\r\n topHeight += itemHeight;\r\n }\r\n rowTop = itemTop;\r\n\r\n if (topDone && bottomDone) {\r\n break;\r\n }\r\n }\r\n }\r\n\r\n}\r\n\r\nexport default Adapter;\r\n","import JQLiteExtras from './modules/jqLiteExtras';\nimport ElementRoutines from './modules/elementRoutines.js';\nimport ScrollBuffer from './modules/buffer.js';\nimport Viewport from './modules/viewport.js';\nimport Adapter from './modules/adapter.js';\n\nangular.module('ui.scroll', [])\n\n .constant('JQLiteExtras', JQLiteExtras)\n .run(['JQLiteExtras', (JQLiteExtras) => {\n !window.jQuery ? (new JQLiteExtras()).registerFor(angular.element) : null;\n ElementRoutines.addCSSRules();\n }])\n\n .directive('uiScrollViewport', function () {\n return {\n restrict: 'A',\n controller: [\n '$scope',\n '$element',\n function (scope, element) {\n this.container = element;\n this.viewport = element;\n this.scope = scope;\n\n angular.forEach(element.children(), child => {\n if (child.tagName.toLowerCase() === 'tbody') {\n this.viewport = angular.element(child);\n }\n });\n\n return this;\n }\n ]\n };\n })\n\n .directive('uiScroll', [\n '$log',\n '$injector',\n '$rootScope',\n '$timeout',\n '$interval',\n '$q',\n '$parse',\n function (console, $injector, $rootScope, $timeout, $interval, $q, $parse) {\n\n return {\n require: ['?^uiScrollViewport'],\n restrict: 'A',\n transclude: 'element',\n priority: 1000,\n terminal: true,\n link: link\n };\n\n function link($scope, element, $attr, controllers, linker) {\n const match = $attr.uiScroll.match(/^\\s*(\\w+)\\s+in\\s+([(\\w|\\$)\\.]+)\\s*$/);\n if (!match) {\n throw new Error('Expected uiScroll in form of \\'_item_ in _datasource_\\' but got \\'' + $attr.uiScroll + '\\'');\n }\n\n function parseNumber(value, defaultValue, isFloat) {\n if (!isFloat) {\n value = value === null ? defaultValue : Math.floor(value);\n }\n return isNaN(value) ? defaultValue : value;\n }\n\n function parseNumericAttr(value, defaultValue, isFloat) {\n const result = $parse(value)($scope);\n return parseNumber(result, defaultValue, isFloat);\n }\n\n const BUFFER_MIN = 3; // Minimum size of the data source request\n const BUFFER_DEFAULT = 10; // Default datasource request size\n const PADDING_MIN = 0.3; // Mininum # of rows in the padding area\n const PADDING_DEFAULT = 0.5; // Default # of rows in the padding area\n const START_INDEX_DEFAULT = 1; // Default start index when requestng the first data block\n const MAX_VIEWPORT_DELAY = 500; // Max time wait (ms) to get the viewport with an height>0\n const VIEWPORT_POLLING_INTERVAL = 50; // Interval used to check the initial viewport height\n\n let datasource = null;\n const itemName = match[1]; // Name of the index variable to publish\n const datasourceName = match[2]; // Name of the datasource to request the rows from\n const viewportController = controllers[0]; // ViewportController, as specified in the require option (http://websystique.com/angularjs/angularjs-custom-directives-controllers-require-option-guide/)\n const bufferSize = Math.max(BUFFER_MIN, parseNumericAttr($attr.bufferSize, BUFFER_DEFAULT)); \n const padding = Math.max(PADDING_MIN, parseNumericAttr($attr.padding, PADDING_DEFAULT, true));\n let startIndex = parseNumericAttr($attr.startIndex, START_INDEX_DEFAULT);\n\n // PHIL: Provide a fixed row height\n // \n const rowHeight = parseNumericAttr($attr.rowheight,null,false);\n\n // Revision IDs\n // \n let ridActual = 0; // current data revision id\n let pending = [];\n\n const elementRoutines = new ElementRoutines($injector, $q);\n const buffer = new ScrollBuffer(elementRoutines, bufferSize, startIndex);\n const viewport = new Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding, rowHeight);\n const adapter = new Adapter($scope, $parse, $attr, viewport, buffer, doAdjust, reload);\n\n if (viewportController) {\n viewportController.adapter = adapter;\n }\n\n const isDatasourceValid = () =>\n Object.prototype.toString.call(datasource) === '[object Object]' && typeof datasource.get === 'function';\n\n datasource = $parse(datasourceName)($scope); // try to get datasource on scope\n if (!isDatasourceValid()) {\n datasource = $injector.get(datasourceName); // try to inject datasource as service\n if (!isDatasourceValid()) {\n throw new Error(datasourceName + ' is not a valid datasource');\n }\n }\n\n let onRenderHandlers = [];\n function onRenderHandlersRunner() {\n onRenderHandlers.forEach(handler => handler.run());\n onRenderHandlers = [];\n }\n function persistDatasourceIndex(datasource, propName) {\n let getter;\n // need to postpone min/maxIndexUser processing if the view is empty\n if(angular.isNumber(datasource[propName])) {\n getter = datasource[propName];\n if(angular.isNumber(getter)) {\n onRenderHandlers = onRenderHandlers.filter(handler => handler.id !== propName);\n onRenderHandlers.push({\n id: propName,\n run: () => datasource[propName] = getter\n });\n }\n }\n }\n\n function defineDatasourceIndex(datasource, propName, propUserName) {\n const descriptor = Object.getOwnPropertyDescriptor(datasource, propName);\n if (descriptor && (descriptor.set || descriptor.get)) {\n return;\n }\n let getter;\n persistDatasourceIndex(datasource, propName);\n Object.defineProperty(datasource, propName, {\n set: (value) => {\n getter = value;\n if(pending.length && !buffer.length) {\n persistDatasourceIndex(datasource, propName);\n return;\n }\n buffer[propUserName] = value;\n const topPaddingHeightOld = viewport.topDataPos();\n viewport.adjustPaddings();\n if (propName === 'minIndex') {\n viewport.onAfterMinIndexSet(topPaddingHeightOld);\n }\n },\n get: () => getter\n });\n }\n\n defineDatasourceIndex(datasource, 'minIndex', 'minIndexUser');\n defineDatasourceIndex(datasource, 'maxIndex', 'maxIndexUser');\n\n const fetchNext = (datasource.get.length !== 2) ?\n (success) => datasource.get(buffer.next, bufferSize, success) :\n (success) => {\n datasource.get({\n index: buffer.next,\n append: buffer.length ? buffer[buffer.length - 1].item : void 0,\n count: bufferSize\n }, success);\n };\n\n const fetchPrevious = (datasource.get.length !== 2) ?\n (success) => datasource.get(buffer.first - bufferSize, bufferSize, success) :\n (success) => {\n datasource.get({\n index: buffer.first - bufferSize,\n prepend: buffer.length ? buffer[0].item : void 0,\n count: bufferSize\n }, success);\n };\n\n const initialize = () => {\n let tryCount = 0;\n if(!viewport.applyContainerStyle()) {\n const timer = $interval(() => {\n tryCount++;\n if(viewport.applyContainerStyle()) {\n $interval.cancel(timer);\n doAdjust();\n }\n if(tryCount * VIEWPORT_POLLING_INTERVAL >= MAX_VIEWPORT_DELAY) {\n $interval.cancel(timer);\n throw Error(`ui-scroll directive requires a viewport with non-zero height in ${MAX_VIEWPORT_DELAY}ms`);\n }\n }, VIEWPORT_POLLING_INTERVAL);\n }\n else {\n doAdjust();\n }\n };\n\n /**\n * Build padding elements\n *\n * Calling linker is the only way I found to get access to the tag name of the template\n * to prevent the directive scope from pollution a new scope is created and destroyed\n * right after the builder creation is completed\n */\n linker((clone, scope) => {\n viewport.createPaddingElements(clone[0]);\n // we do not include the clone in the DOM. It means that the nested directives will not\n // be able to reach the parent directives, but in this case it is intentional because we\n // created the clone to access the template tag name\n scope.$destroy();\n clone.remove();\n });\n\n $scope.$on('$destroy', () => {\n unbindEvents();\n viewport.unbind('mousewheel', wheelHandler);\n });\n\n viewport.bind('mousewheel', wheelHandler);\n\n initialize();\n\n /* Private function definitions */\n\n function isInvalid(rid) {\n return (rid && rid !== ridActual) || $scope.$$destroyed;\n }\n\n function bindEvents() {\n viewport.bind('resize', resizeAndScrollHandler);\n viewport.bind('scroll', resizeAndScrollHandler);\n }\n\n function unbindEvents() {\n viewport.unbind('resize', resizeAndScrollHandler);\n viewport.unbind('scroll', resizeAndScrollHandler);\n }\n\n function reload() {\n viewport.resetTopPadding();\n viewport.resetBottomPadding();\n if (arguments.length) {\n startIndex = parseNumber(arguments[0], START_INDEX_DEFAULT, false);\n }\n buffer.reset(startIndex);\n persistDatasourceIndex(datasource, 'minIndex');\n persistDatasourceIndex(datasource, 'maxIndex');\n doAdjust();\n }\n\n function isElementVisible(wrapper) {\n if(rowHeight) {\n return true;\n }\n return wrapper.element.height() && wrapper.element[0].offsetParent;\n }\n\n function visibilityWatcher(wrapper) {\n if (isElementVisible(wrapper)) {\n buffer.forEach((item) => {\n if (typeof item.unregisterVisibilityWatcher === 'function') {\n item.unregisterVisibilityWatcher();\n delete item.unregisterVisibilityWatcher;\n }\n });\n if (!pending.length) {\n $timeout(() => doAdjust());\n }\n }\n }\n\n function insertWrapperContent(wrapper, insertAfter) {\n createElement(wrapper, insertAfter, viewport.insertElement);\n if (!isElementVisible(wrapper)) {\n wrapper.unregisterVisibilityWatcher = wrapper.scope.$watch(() => visibilityWatcher(wrapper));\n }\n elementRoutines.hideElement(wrapper); // hide inserted elements before data binding\n }\n\n function createElement(wrapper, insertAfter, insertElement) {\n let promises = null;\n const sibling = (insertAfter > 0) ? buffer[insertAfter - 1].element : undefined;\n linker((clone, scope) => {\n promises = insertElement(clone, sibling);\n wrapper.element = clone;\n wrapper.scope = scope;\n scope[itemName] = wrapper.item;\n });\n // ui-scroll-grid apply\n if (adapter.transform) {\n const tdInitializer = wrapper.scope.uiScrollTdInitializer;\n if (tdInitializer && tdInitializer.linking) {\n adapter.transform(wrapper.scope, wrapper.element);\n } else {\n wrapper.scope.uiScrollTdInitializer = {\n onLink: () => adapter.transform(wrapper.scope, wrapper.element),\n scope: wrapper.scope\n };\n }\n }\n return promises;\n }\n\n function updateDOM() {\n let promises = [];\n const toBePrepended = [];\n const toBeRemoved = [];\n const inserted = [];\n\n buffer.forEach((wrapper, i) => {\n switch (wrapper.op) {\n case 'prepend':\n toBePrepended.unshift(wrapper);\n break;\n case 'append':\n insertWrapperContent(wrapper, i);\n wrapper.op = 'none';\n inserted.push(wrapper);\n break;\n case 'insert':\n promises = promises.concat(createElement(wrapper, i, viewport.insertElementAnimated));\n wrapper.op = 'none';\n inserted.push(wrapper);\n break;\n case 'remove':\n toBeRemoved.push(wrapper);\n }\n });\n\n toBeRemoved.forEach((wrapper) => promises = promises.concat(viewport.removeItem(wrapper)));\n\n if (toBePrepended.length)\n toBePrepended.forEach((wrapper) => {\n insertWrapperContent(wrapper);\n wrapper.op = 'none';\n });\n\n buffer.forEach((item, i) => item.scope.$index = buffer.first + i);\n\n return {\n prepended: toBePrepended,\n removed: toBeRemoved,\n inserted: inserted,\n animated: promises\n };\n\n }\n\n // Adjust the viewport paddings\n // \n function updatePaddings(rid, updates) {\n // schedule another doAdjust after animation completion\n if (updates.animated.length) {\n $q.all(updates.animated).then(() => {\n viewport.adjustPaddings();\n doAdjust(rid);\n });\n } else {\n viewport.adjustPaddings();\n }\n }\n\n function enqueueFetch(rid, updates) {\n if (viewport.shouldLoadBottom()) {\n if (!updates || buffer.effectiveHeight(updates.inserted) > 0) {\n // this means that at least one item appended in the last batch has height > 0\n if (pending.push(true) === 1) {\n adapter.loading(true);\n fetch(rid);\n }\n }\n } else if (viewport.shouldLoadTop()) {\n if ((!updates || buffer.effectiveHeight(updates.prepended) > 0) || pending[0]) {\n // this means that at least one item appended in the last batch has height > 0\n // pending[0] = true means that previous fetch was appending. We need to force at least one prepend\n // BTW there will always be at least 1 element in the pending array because bottom is fetched first\n if (pending.push(false) === 1) {\n adapter.loading(true);\n fetch(rid);\n }\n }\n }\n }\n\n function processUpdates() {\n const updates = updateDOM();\n\n // We need the item bindings to be processed before we can do adjustments\n !$scope.$$phase && !$rootScope.$$phase && $scope.$digest();\n\n updates.inserted.forEach(w => elementRoutines.showElement(w));\n updates.prepended.forEach(w => elementRoutines.showElement(w));\n return updates;\n }\n\n function doAdjust(rid) {\n if (!rid) { // dismiss pending requests\n pending = [];\n rid = ++ridActual;\n }\n\n const updates = processUpdates();\n\n if (isInvalid(rid)) {\n return;\n }\n\n updatePaddings(rid, updates);\n enqueueFetch(rid);\n\n if (!pending.length) {\n adapter.calculateProperties();\n }\n }\n\n function doAdjustAfterFetch(rid) {\n const updates = processUpdates();\n\n viewport.onAfterPrepend(updates);\n\n if (isInvalid(rid)) {\n return;\n }\n\n updatePaddings(rid, updates);\n onRenderHandlersRunner();\n enqueueFetch(rid, updates);\n pending.shift();\n\n if (pending.length)\n fetch(rid);\n else {\n adapter.loading(false);\n bindEvents();\n adapter.calculateProperties();\n }\n }\n\n function fetch(rid) {\n if (pending[0]) {// scrolling down\n if (buffer.length && !viewport.shouldLoadBottom()) {\n doAdjustAfterFetch(rid);\n } else {\n fetchNext((result) => {\n if (isInvalid(rid)) {\n return;\n }\n\n if (result.length < bufferSize) {\n buffer.eof = true;\n }\n\n if (result.length > 0) {\n viewport.clipTop();\n buffer.append(result);\n }\n\n doAdjustAfterFetch(rid);\n });\n }\n } else { // scrolling up\n if (buffer.length && !viewport.shouldLoadTop()) {\n doAdjustAfterFetch(rid);\n } else {\n fetchPrevious((result) => {\n if (isInvalid(rid)) {\n return;\n }\n\n if (result.length < bufferSize) {\n buffer.bof = true;\n // log 'bof is reached'\n }\n\n if 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\t\t__webpack_require__.r(ns);\n \t\tObject.defineProperty(ns, 'default', { enumerable: true, value: value });\n \t\tif(mode & 2 && typeof value != 'string') for(var key in value) __webpack_require__.d(ns, key, function(key) { return value[key]; }.bind(null, key));\n \t\treturn ns;\n \t};\n\n \t// getDefaultExport function for compatibility with non-harmony modules\n \t__webpack_require__.n = function(module) {\n \t\tvar getter = module && module.__esModule ?\n \t\t\tfunction getDefault() { return module['default']; } :\n \t\t\tfunction getModuleExports() { return module; };\n \t\t__webpack_require__.d(getter, 'a', getter);\n \t\treturn getter;\n \t};\n\n \t// Object.prototype.hasOwnProperty.call\n \t__webpack_require__.o = function(object, property) { return Object.prototype.hasOwnProperty.call(object, property); };\n\n \t// __webpack_public_path__\n \t__webpack_require__.p = \"\";\n\n\n \t// Load entry module and return exports\n \treturn __webpack_require__(__webpack_require__.s = 1);\n","/*!\r\n globals: angular, window\r\n List of used element methods available in JQuery but not in JQuery Lite\r\n element.before(elem)\r\n element.height()\r\n element.outerHeight(true)\r\n element.height(value) = only for Top/Bottom padding elements\r\n element.scrollTop()\r\n element.scrollTop(value)\r\n */\r\n\r\nexport default class JQLiteExtras {\r\n\r\n registerFor(element) {\r\n let convertToPx, css, getStyle, isWindow;\r\n // angular implementation blows up if elem is the window\r\n css = angular.element.prototype.css;\r\n\r\n element.prototype.css = function (name, value) {\r\n let self = this;\r\n let elem = self[0];\r\n if (!(!elem || elem.nodeType === 3 || elem.nodeType === 8 || !elem.style)) {\r\n return css.call(self, name, value);\r\n }\r\n };\r\n\r\n // as defined in angularjs v1.0.5\r\n isWindow = (obj) => obj && obj.document && obj.location && obj.alert && obj.setInterval;\r\n\r\n function scrollTo(self, direction, value) {\r\n let elem = self[0];\r\n let [method, prop, preserve] = {\r\n top: [\r\n 'scrollTop',\r\n 'pageYOffset',\r\n 'scrollLeft'\r\n ],\r\n left: [\r\n 'scrollLeft',\r\n 'pageXOffset',\r\n 'scrollTop'\r\n ]\r\n }[direction];\r\n\r\n const isValueDefined = typeof value !== 'undefined';\r\n if (isWindow(elem)) {\r\n if (isValueDefined) {\r\n return elem.scrollTo(self[preserve].call(self), value);\r\n }\r\n return (prop in elem) ? elem[prop] : elem.document.documentElement[method];\r\n } else {\r\n if (isValueDefined) {\r\n elem[method] = value;\r\n }\r\n return elem[method];\r\n }\r\n }\r\n\r\n if (window.getComputedStyle) {\r\n getStyle = (elem) => window.getComputedStyle(elem, null);\r\n convertToPx = (elem, value) => parseFloat(value);\r\n } else {\r\n getStyle = (elem) => elem.currentStyle;\r\n convertToPx = (elem, value) => {\r\n let left, result, rs, rsLeft, style;\r\n let core_pnum = /[+-]?(?:\\d*\\.|)\\d+(?:[eE][+-]?\\d+|)/.source;\r\n let rnumnonpx = new RegExp('^(' + core_pnum + ')(?!px)[a-z%]+$', 'i');\r\n\r\n if (!rnumnonpx.test(value)) {\r\n return parseFloat(value);\r\n }\r\n\r\n // ported from JQuery\r\n style = elem.style;\r\n left = style.left;\r\n rs = elem.runtimeStyle;\r\n rsLeft = rs && rs.left;\r\n if (rs) {\r\n rs.left = style.left;\r\n }\r\n // put in the new values to get a computed style out\r\n style.left = value;\r\n result = style.pixelLeft;\r\n style.left = left;\r\n if (rsLeft) {\r\n rs.left = rsLeft;\r\n }\r\n return result;\r\n };\r\n }\r\n\r\n function getMeasurements(elem, measure) {\r\n let base, borderA, borderB, computedMarginA, computedMarginB, computedStyle, dirA, dirB, marginA, marginB, paddingA, paddingB;\r\n\r\n if (isWindow(elem)) {\r\n base = document.documentElement[{height: 'clientHeight', width: 'clientWidth'}[measure]];\r\n\r\n return {\r\n base: base,\r\n padding: 0,\r\n border: 0,\r\n margin: 0\r\n };\r\n }\r\n\r\n // Start with offset property\r\n [\r\n base,\r\n dirA,\r\n dirB\r\n ] = {\r\n width: [\r\n elem.offsetWidth,\r\n 'Left',\r\n 'Right'\r\n ],\r\n height: [\r\n elem.offsetHeight,\r\n 'Top',\r\n 'Bottom'\r\n ]\r\n }[measure];\r\n\r\n computedStyle = getStyle(elem);\r\n paddingA = convertToPx(elem, computedStyle['padding' + dirA]) || 0;\r\n paddingB = convertToPx(elem, computedStyle['padding' + dirB]) || 0;\r\n borderA = convertToPx(elem, computedStyle['border' + dirA + 'Width']) || 0;\r\n borderB = convertToPx(elem, computedStyle['border' + dirB + 'Width']) || 0;\r\n computedMarginA = computedStyle['margin' + dirA];\r\n computedMarginB = computedStyle['margin' + dirB];\r\n\r\n // I do not care for width for now, so this hack is irrelevant\r\n // if ( !supportsPercentMargin )\r\n // computedMarginA = hackPercentMargin( elem, computedStyle, computedMarginA )\r\n // computedMarginB = hackPercentMargin( elem, computedStyle, computedMarginB )\r\n marginA = convertToPx(elem, computedMarginA) || 0;\r\n marginB = convertToPx(elem, computedMarginB) || 0;\r\n\r\n return {\r\n base: base,\r\n padding: paddingA + paddingB,\r\n border: borderA + borderB,\r\n margin: marginA + marginB\r\n };\r\n }\r\n\r\n function getWidthHeight(elem, direction, measure) {\r\n let computedStyle, result;\r\n\r\n let measurements = getMeasurements(elem, direction);\r\n\r\n if (measurements.base > 0) {\r\n return {\r\n base: measurements.base - measurements.padding - measurements.border,\r\n outer: measurements.base,\r\n outerfull: measurements.base + measurements.margin\r\n }[measure];\r\n }\r\n\r\n // Fall back to computed then uncomputed css if necessary\r\n computedStyle = getStyle(elem);\r\n result = computedStyle[direction];\r\n\r\n if (result < 0 || result === null) {\r\n result = elem.style[direction] || 0;\r\n }\r\n\r\n // Normalize \"\", auto, and prepare for extra\r\n result = parseFloat(result) || 0;\r\n\r\n return {\r\n base: result - measurements.padding - measurements.border,\r\n outer: result,\r\n outerfull: result + measurements.padding + measurements.border + measurements.margin\r\n }[measure];\r\n }\r\n\r\n // define missing methods\r\n return angular.forEach({\r\n before(newElem) {\r\n var children, elem, i, j, parent, ref, self;\r\n self = this;\r\n elem = self[0];\r\n parent = self.parent();\r\n children = parent.contents();\r\n if (children[0] === elem) {\r\n return parent.prepend(newElem);\r\n } else {\r\n for (i = j = 1, ref = children.length - 1; 1 <= ref ? j <= ref : j >= ref; i = 1 <= ref ? ++j : --j) {\r\n if (children[i] === elem) {\r\n angular.element(children[i - 1]).after(newElem);\r\n return;\r\n }\r\n }\r\n throw new Error('invalid DOM structure ' + elem.outerHTML);\r\n }\r\n },\r\n height (value){\r\n var self;\r\n self = this;\r\n if (typeof value !== 'undefined') {\r\n if (angular.isNumber(value)) {\r\n value = value + 'px';\r\n }\r\n return css.call(self, 'height', value);\r\n } else {\r\n return getWidthHeight(this[0], 'height', 'base');\r\n }\r\n },\r\n outerHeight(option) {\r\n return getWidthHeight(this[0], 'height', option ? 'outerfull' : 'outer');\r\n },\r\n outerWidth(option) {\r\n return getWidthHeight(this[0], 'width', option ? 'outerfull' : 'outer');\r\n },\r\n\r\n /*\r\n The offset setter method is not implemented\r\n */\r\n offset(value) {\r\n let docElem, win;\r\n let self = this;\r\n let box = {\r\n top: 0,\r\n left: 0\r\n };\r\n let elem = self[0];\r\n let doc = elem && elem.ownerDocument;\r\n\r\n if (arguments.length) {\r\n if (value === undefined) {\r\n return self;\r\n }\r\n // TODO: implement setter\r\n throw new Error('offset setter method is not implemented');\r\n }\r\n\r\n if (!doc) {\r\n return;\r\n }\r\n\r\n docElem = doc.documentElement;\r\n\r\n // TODO: Make sure it's not a disconnected DOM node\r\n\r\n if (elem.getBoundingClientRect != null) {\r\n box = elem.getBoundingClientRect();\r\n }\r\n\r\n win = doc.defaultView || doc.parentWindow;\r\n\r\n return {\r\n top: box.top + (win.pageYOffset || docElem.scrollTop) - (docElem.clientTop || 0),\r\n left: box.left + (win.pageXOffset || docElem.scrollLeft) - (docElem.clientLeft || 0)\r\n };\r\n },\r\n scrollTop(value) {\r\n return scrollTo(this, 'top', value);\r\n },\r\n scrollLeft(value) {\r\n return scrollTo(this, 'left', value);\r\n }\r\n }, (value, key) => {\r\n if (!element.prototype[key]) {\r\n return element.prototype[key] = value;\r\n }\r\n });\r\n }\r\n\r\n}\r\n","const hideClassToken = 'ng-ui-scroll-hide';\r\n\r\nexport default class ElementRoutines {\r\n\r\n static addCSSRules() {\r\n const selector = '.' + hideClassToken;\r\n const rules = 'display: none';\r\n const sheet = document.styleSheets[0];\r\n let index;\r\n try {\r\n index = sheet.cssRules.length;\r\n } catch (err) {\r\n index = 0;\r\n }\r\n if('insertRule' in sheet) {\r\n sheet.insertRule(selector + '{' + rules + '}', index);\r\n }\r\n else if('addRule' in sheet) {\r\n sheet.addRule(selector, rules, index);\r\n }\r\n }\r\n\r\n constructor($injector, $q) {\r\n this.$animate = ($injector.has && $injector.has('$animate')) ? $injector.get('$animate') : null;\r\n this.isAngularVersionLessThen1_3 = angular.version.major === 1 && angular.version.minor < 3;\r\n this.$q = $q;\r\n }\r\n\r\n hideElement(wrapper) {\r\n wrapper.element.addClass(hideClassToken);\r\n }\r\n\r\n showElement(wrapper) {\r\n wrapper.element.removeClass(hideClassToken);\r\n }\r\n\r\n insertElement(newElement, previousElement) {\r\n previousElement.after(newElement);\r\n return [];\r\n }\r\n\r\n removeElement(wrapper) {\r\n wrapper.element.remove();\r\n wrapper.scope.$destroy();\r\n return [];\r\n }\r\n\r\n insertElementAnimated(newElement, previousElement) {\r\n if (!this.$animate) {\r\n return this.insertElement(newElement, previousElement);\r\n }\r\n\r\n if (this.isAngularVersionLessThen1_3) {\r\n const deferred = this.$q.defer();\r\n // no need for parent - previous element is never null\r\n this.$animate.enter(newElement, null, previousElement, () => deferred.resolve());\r\n\r\n return [deferred.promise];\r\n }\r\n\r\n // no need for parent - previous element is never null\r\n return [this.$animate.enter(newElement, null, previousElement)];\r\n }\r\n\r\n removeElementAnimated(wrapper) {\r\n if (!this.$animate) {\r\n return this.removeElement(wrapper);\r\n }\r\n\r\n if (this.isAngularVersionLessThen1_3) {\r\n const deferred = this.$q.defer();\r\n this.$animate.leave(wrapper.element, () => {\r\n wrapper.scope.$destroy();\r\n return deferred.resolve();\r\n });\r\n\r\n return [deferred.promise];\r\n }\r\n\r\n return [(this.$animate.leave(wrapper.element)).then(() => wrapper.scope.$destroy())];\r\n }\r\n}","export default function ScrollBuffer(elementRoutines, bufferSize, startIndex) {\r\n const buffer = Object.create(Array.prototype);\r\n\r\n angular.extend(buffer, {\r\n size: bufferSize,\r\n\r\n reset(startIndex) {\r\n buffer.remove(0, buffer.length);\r\n buffer.eof = false;\r\n buffer.bof = false;\r\n buffer.first = startIndex;\r\n buffer.next = startIndex;\r\n buffer.minIndex = startIndex;\r\n buffer.maxIndex = startIndex;\r\n buffer.minIndexUser = null;\r\n buffer.maxIndexUser = null;\r\n },\r\n\r\n append(items) {\r\n items.forEach((item) => {\r\n ++buffer.next;\r\n buffer.insert('append', item);\r\n });\r\n buffer.maxIndex = buffer.eof ? buffer.next - 1 : Math.max(buffer.next - 1, buffer.maxIndex);\r\n },\r\n\r\n prepend(items) {\r\n items.reverse().forEach((item) => {\r\n --buffer.first;\r\n buffer.insert('prepend', item);\r\n });\r\n buffer.minIndex = buffer.bof ? buffer.minIndex = buffer.first : Math.min(buffer.first, buffer.minIndex);\r\n },\r\n\r\n /**\r\n * inserts wrapped element in the buffer\r\n * the first argument is either operation keyword (see below) or a number for operation 'insert'\r\n * for insert the number is the index for the buffer element the new one have to be inserted after\r\n * operations: 'append', 'prepend', 'insert', 'remove', 'update', 'none'\r\n */\r\n insert(operation, item, isTop) {\r\n const wrapper = {\r\n item: item\r\n };\r\n\r\n if (operation % 1 === 0) {// it is an insert\r\n wrapper.op = 'insert';\r\n buffer.splice(operation, 0, wrapper);\r\n if(isTop) {\r\n buffer.first--;\r\n }\r\n else {\r\n buffer.next++;\r\n }\r\n } else {\r\n wrapper.op = operation;\r\n switch (operation) {\r\n case 'append':\r\n buffer.push(wrapper);\r\n break;\r\n case 'prepend':\r\n buffer.unshift(wrapper);\r\n break;\r\n }\r\n }\r\n },\r\n\r\n // removes elements from buffer\r\n remove(arg1, arg2) {\r\n if (angular.isNumber(arg1)) {\r\n // removes items from arg1 (including) through arg2 (excluding)\r\n for (let i = arg1; i < arg2; i++) {\r\n elementRoutines.removeElement(buffer[i]);\r\n }\r\n return buffer.splice(arg1, arg2 - arg1);\r\n }\r\n // removes single item(wrapper) from the buffer\r\n buffer.splice(buffer.indexOf(arg1), 1);\r\n if(arg1._op === 'isTop' && buffer.first === this.getAbsMinIndex()) {\r\n this.incrementMinIndex();\r\n }\r\n else {\r\n this.decrementMaxIndex();\r\n }\r\n if(arg1._op === 'isTop') {\r\n buffer.first++;\r\n }\r\n else {\r\n buffer.next--;\r\n }\r\n if(!buffer.length) {\r\n buffer.first = 1;\r\n buffer.next = 1;\r\n }\r\n\r\n return elementRoutines.removeElementAnimated(arg1);\r\n },\r\n\r\n incrementMinIndex() {\r\n if(buffer.minIndexUser !== null) {\r\n if(buffer.minIndex > buffer.minIndexUser) {\r\n buffer.minIndexUser++;\r\n return;\r\n }\r\n if(buffer.minIndex === buffer.minIndexUser) {\r\n buffer.minIndexUser++;\r\n }\r\n }\r\n buffer.minIndex++;\r\n },\r\n\r\n decrementMaxIndex() {\r\n if(buffer.maxIndexUser !== null && buffer.maxIndex <= buffer.maxIndexUser) {\r\n buffer.maxIndexUser--;\r\n }\r\n buffer.maxIndex--;\r\n },\r\n\r\n getAbsMinIndex() {\r\n if(buffer.minIndexUser !== null) {\r\n return Math.min(buffer.minIndexUser, buffer.minIndex);\r\n }\r\n return buffer.minIndex;\r\n },\r\n\r\n getAbsMaxIndex() {\r\n if(buffer.maxIndexUser !== null) {\r\n return Math.max(buffer.maxIndexUser, buffer.maxIndex);\r\n }\r\n return buffer.maxIndex;\r\n },\r\n\r\n effectiveHeight(elements) {\r\n if (!elements.length) {\r\n return 0;\r\n }\r\n let top = Number.MAX_VALUE;\r\n let bottom = Number.NEGATIVE_INFINITY;\r\n elements.forEach((wrapper) => {\r\n if (wrapper.element[0].offsetParent) {\r\n // element style is not display:none\r\n top = Math.min(top, wrapper.element.offset().top);\r\n bottom = Math.max(bottom, wrapper.element.offset().top + wrapper.element.outerHeight(true));\r\n }\r\n });\r\n return Math.max(0, bottom - top);\r\n }\r\n\r\n });\r\n\r\n buffer.reset(startIndex);\r\n\r\n return buffer;\r\n}\r\n","// Can't just extend the Array, due to Babel does not support built-in classes extending\r\n// This solution was taken from https://stackoverflow.com/questions/46897414/es6-class-extends-array-workaround-for-es5-babel-transpile\r\nclass CacheProto {\r\n add(item) {\r\n for (let i = this.length - 1; i >= 0; i--) {\r\n if (this[i].index === item.scope.$index) {\r\n this[i].height = this.rowHeight || item.element.outerHeight();\r\n return;\r\n }\r\n }\r\n this.push({\r\n index: item.scope.$index,\r\n height: this.rowHeight || item.element.outerHeight()\r\n });\r\n this.sort((a, b) => ((a.index < b.index) ? -1 : ((a.index > b.index) ? 1 : 0)));\r\n }\r\n\r\n remove(argument, _isTop) {\r\n const index = argument % 1 === 0 ? argument : argument.scope.$index;\r\n const isTop = argument % 1 === 0 ? _isTop : argument._op === 'isTop';\r\n for (let i = this.length - 1; i >= 0; i--) {\r\n if (this[i].index === index) {\r\n this.splice(i, 1);\r\n break;\r\n }\r\n }\r\n if(!isTop) {\r\n for (let i = this.length - 1; i >= 0; i--) {\r\n if (this[i].index > index) {\r\n this[i].index--;\r\n }\r\n }\r\n }\r\n }\r\n\r\n clear() {\r\n this.length = 0;\r\n }\r\n}\r\n\r\nfunction Cache() {\r\n const instance = [];\r\n instance.push.apply(instance, arguments);\r\n Object.setPrototypeOf(instance, Cache.prototype);\r\n return instance;\r\n}\r\nCache.prototype = Object.create(Array.prototype);\r\nObject.getOwnPropertyNames(CacheProto.prototype).forEach(methodName =>\r\n Cache.prototype[methodName] = CacheProto.prototype[methodName]\r\n);\r\n\r\nfunction generateElement(template) {\r\n if(template.nodeType !== Node.ELEMENT_NODE) {\r\n throw new Error('ui-scroll directive requires an Element node for templating the view');\r\n }\r\n let element;\r\n switch (template.tagName.toLowerCase()) {\r\n case 'dl':\r\n throw new Error(`ui-scroll directive does not support <${template.tagName}> as a repeating tag: ${template.outerHTML}`);\r\n case 'tr':\r\n let table = angular.element('
    ');\r\n element = table.find('tr');\r\n break;\r\n case 'li':\r\n element = angular.element('
  • ');\r\n break;\r\n default:\r\n element = angular.element('
    ');\r\n }\r\n return element;\r\n}\r\n\r\nclass Padding {\r\n constructor(template,rowHeight) {\r\n this.element = generateElement(template);\r\n this.cache = new Cache();\r\n this.cache.rowHeight = rowHeight;\r\n }\r\n\r\n height() {\r\n // When called wit a parameter, this sets the height of the padding\r\n return this.element.height.apply(this.element, arguments);\r\n }\r\n}\r\n\r\nexport default Padding;","import Padding from './padding';\r\n\r\nexport default function Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding, rowHeight) {\r\n let topPadding = null;\r\n let bottomPadding = null;\r\n const viewport = viewportController && viewportController.viewport ? viewportController.viewport : angular.element(window);\r\n const container = viewportController && viewportController.container ? viewportController.container : undefined;\r\n const scope = viewportController && viewportController.scope ? viewportController.scope : $rootScope;\r\n\r\n viewport.css({\r\n 'overflow-anchor': 'none',\r\n 'overflow-y': 'auto',\r\n 'display': 'block'\r\n });\r\n\r\n function bufferPadding() {\r\n return viewport.outerHeight() * padding; // some extra space to initiate preload\r\n }\r\n\r\n angular.extend(viewport, {\r\n getScope() {\r\n return scope;\r\n },\r\n\r\n createPaddingElements(template) {\r\n topPadding = new Padding(template,rowHeight);\r\n bottomPadding = new Padding(template,rowHeight);\r\n element.before(topPadding.element);\r\n element.after(bottomPadding.element);\r\n topPadding.height(0);\r\n bottomPadding.height(0);\r\n },\r\n\r\n applyContainerStyle() {\r\n if (!container) {\r\n return true;\r\n }\r\n if(container !== viewport) {\r\n viewport.css('height', window.getComputedStyle(container[0]).height);\r\n }\r\n return viewport.height() > 0;\r\n },\r\n\r\n bottomDataPos() {\r\n let scrollHeight = viewport[0].scrollHeight;\r\n scrollHeight = scrollHeight != null ? scrollHeight : viewport[0].document.documentElement.scrollHeight;\r\n return scrollHeight - bottomPadding.height();\r\n },\r\n\r\n topDataPos() {\r\n return topPadding.height();\r\n },\r\n\r\n bottomVisiblePos() {\r\n return viewport.scrollTop() + viewport.outerHeight();\r\n },\r\n\r\n topVisiblePos() {\r\n return viewport.scrollTop();\r\n },\r\n\r\n insertElement(e, sibling) {\r\n return elementRoutines.insertElement(e, sibling || topPadding.element);\r\n },\r\n\r\n insertElementAnimated(e, sibling) {\r\n return elementRoutines.insertElementAnimated(e, sibling || topPadding.element);\r\n },\r\n\r\n shouldLoadBottom() {\r\n return !buffer.eof && viewport.bottomDataPos() < viewport.bottomVisiblePos() + bufferPadding();\r\n },\r\n\r\n clipBottom() {\r\n // clip the invisible items off the bottom\r\n let overage = 0;\r\n let overageHeight = 0;\r\n let itemHeight = 0;\r\n let emptySpaceHeight = viewport.bottomDataPos() - viewport.bottomVisiblePos() - bufferPadding();\r\n\r\n // Simple calculation now using the fixed rowHeight if available.\r\n // Might be optimized if needed\r\n for (let i = buffer.length - 1; i >= 0; i--) {\r\n itemHeight = rowHeight ? rowHeight : buffer[i].element.outerHeight(true);\r\n if (overageHeight + itemHeight > emptySpaceHeight) {\r\n break;\r\n }\r\n bottomPadding.cache.add(buffer[i]);\r\n overageHeight += itemHeight;\r\n overage++;\r\n }\r\n\r\n if (overage > 0) {\r\n buffer.eof = false;\r\n buffer.remove(buffer.length - overage, buffer.length);\r\n buffer.next -= overage;\r\n viewport.adjustPaddings();\r\n }\r\n },\r\n\r\n shouldLoadTop() {\r\n return !buffer.bof && (viewport.topDataPos() > viewport.topVisiblePos() - bufferPadding());\r\n },\r\n\r\n clipTop() {\r\n // clip the invisible items off the top\r\n let overage = 0;\r\n let overageHeight = 0;\r\n let itemHeight = 0;\r\n let emptySpaceHeight = viewport.topVisiblePos() - viewport.topDataPos() - bufferPadding();\r\n\r\n // Simple calculation now using the fixed rowHeight if available.\r\n // Might be optimized if needed\r\n for (let i = 0; i < buffer.length; i++) {\r\n itemHeight = rowHeight ? rowHeight : buffer[i].element.outerHeight(true);\r\n if (overageHeight + itemHeight > emptySpaceHeight) {\r\n break;\r\n }\r\n topPadding.cache.add(buffer[i]);\r\n overageHeight += itemHeight;\r\n overage++;\r\n }\r\n\r\n if (overage > 0) {\r\n // we need to adjust top padding element before items are removed from top\r\n // to avoid strange behaviour of scroll bar during remove top items when we are at the very bottom\r\n topPadding.height(topPadding.height() + overageHeight);\r\n buffer.bof = false;\r\n buffer.remove(0, overage);\r\n buffer.first += overage;\r\n }\r\n },\r\n\r\n adjustPaddings() {\r\n if (!buffer.length) {\r\n return;\r\n }\r\n\r\n // precise heights calculation based on items that are in buffer or that were in buffer once\r\n // outerHeight(true) == [height+ padding + border + margin]\r\n // The calculation bellow can certainly be replaced by:\r\n // const visibleItemsHeight = rowHeight ? rowHeight * buffer.length\r\n // : buffer.reduce((summ, item) => summ + item.element.outerHeight(true), 0);\r\n const visibleItemsHeight = buffer.reduce((summ, item) => summ + (rowHeight ? rowHeight : item.element.outerHeight(true)), 0);\r\n\r\n // Sinlarly, the calculation of the paddings (top & bottom) can certanly be optimizez\r\n let topPaddingHeight = 0, topCount = 0;\r\n topPadding.cache.forEach(item => {\r\n if(item.index < buffer.first) {\r\n topPaddingHeight += item.height; // outerHeight(true) is actually stored in this data member\r\n topCount++;\r\n }\r\n });\r\n\r\n let bottomPaddingHeight = 0, bottomCount = 0;\r\n bottomPadding.cache.forEach(item => {\r\n if(item.index >= buffer.next) {\r\n bottomPaddingHeight += item.height; // outerHeight(true) is actually stored in this data member\r\n bottomCount++;\r\n }\r\n });\r\n\r\n const totalHeight = visibleItemsHeight + topPaddingHeight + bottomPaddingHeight;\r\n const averageItemHeight = totalHeight / (topCount + bottomCount + buffer.length);\r\n\r\n // average heights calculation, items that have never been reached\r\n let adjustTopPadding = buffer.minIndexUser !== null && buffer.minIndex > buffer.minIndexUser;\r\n let adjustBottomPadding = buffer.maxIndexUser !== null && buffer.maxIndex < buffer.maxIndexUser;\r\n let topPaddingHeightAdd = adjustTopPadding ? (buffer.minIndex - buffer.minIndexUser) * averageItemHeight : 0;\r\n let bottomPaddingHeightAdd = adjustBottomPadding ? (buffer.maxIndexUser - buffer.maxIndex) * averageItemHeight : 0;\r\n\r\n // paddings combine adjustment\r\n topPadding.height(topPaddingHeight + topPaddingHeightAdd);\r\n bottomPadding.height(bottomPaddingHeight + bottomPaddingHeightAdd);\r\n },\r\n\r\n onAfterMinIndexSet(topPaddingHeightOld) {\r\n // additional scrollTop adjustment in case of datasource.minIndex external set\r\n if (buffer.minIndexUser !== null && buffer.minIndex > buffer.minIndexUser) {\r\n let diff = topPadding.height() - topPaddingHeightOld;\r\n viewport.scrollTop(viewport.scrollTop() + diff);\r\n while((diff -= viewport.scrollTop()) > 0) {\r\n bottomPadding.height(bottomPadding.height() + diff);\r\n viewport.scrollTop(viewport.scrollTop() + diff);\r\n }\r\n }\r\n },\r\n\r\n onAfterPrepend(updates) {\r\n if (!updates.prepended.length)\r\n return;\r\n const height = buffer.effectiveHeight(updates.prepended);\r\n const paddingHeight = topPadding.height() - height;\r\n if (paddingHeight >= 0) {\r\n topPadding.height(paddingHeight);\r\n }\r\n else {\r\n topPadding.height(0);\r\n viewport.scrollTop(viewport.scrollTop() - paddingHeight);\r\n }\r\n },\r\n\r\n resetTopPadding() {\r\n topPadding.height(0);\r\n topPadding.cache.clear();\r\n },\r\n\r\n resetBottomPadding() {\r\n bottomPadding.height(0);\r\n bottomPadding.cache.clear();\r\n },\r\n\r\n removeCacheItem(item, isTop) {\r\n topPadding.cache.remove(item, isTop);\r\n bottomPadding.cache.remove(item, isTop);\r\n },\r\n\r\n removeItem(item) {\r\n this.removeCacheItem(item);\r\n return buffer.remove(item);\r\n }\r\n });\r\n\r\n return viewport;\r\n}\r\n","class Adapter {\r\n\r\n constructor($scope, $parse, $attr, viewport, buffer, doAdjust, reload) {\r\n this.$parse = $parse;\r\n this.$attr = $attr;\r\n this.viewport = viewport;\r\n this.buffer = buffer;\r\n\r\n this.doAdjust = doAdjust;\r\n this.reload = reload;\r\n\r\n this.isLoading = false;\r\n this.disabled = false;\r\n\r\n const viewportScope = viewport.getScope();\r\n this.startScope = viewportScope.$parent ? viewportScope : $scope;\r\n\r\n this.publicContext = {};\r\n this.assignAdapter($attr.adapter);\r\n this.generatePublicContext();\r\n }\r\n\r\n assignAdapter(adapterAttr) {\r\n if (!adapterAttr || !(adapterAttr = adapterAttr.replace(/^\\s+|\\s+$/gm, ''))) {\r\n return;\r\n }\r\n let adapterOnScope;\r\n\r\n try {\r\n this.$parse(adapterAttr).assign(this.startScope, {});\r\n adapterOnScope = this.$parse(adapterAttr)(this.startScope);\r\n }\r\n catch (error) {\r\n error.message = `Angular ui-scroll Adapter assignment exception.\\n` +\r\n `Can't parse \"${adapterAttr}\" expression.\\n` +\r\n error.message;\r\n throw error;\r\n }\r\n\r\n angular.extend(adapterOnScope, this.publicContext);\r\n this.publicContext = adapterOnScope;\r\n }\r\n\r\n generatePublicContext() {\r\n // these methods will be accessible out of ui-scroll via user defined adapter\r\n const publicMethods = ['reload', 'applyUpdates', 'append', 'prepend', 'isBOF', 'isEOF', 'isEmpty'];\r\n for (let i = publicMethods.length - 1; i >= 0; i--) {\r\n this.publicContext[publicMethods[i]] = this[publicMethods[i]].bind(this);\r\n }\r\n\r\n // these read-only props will be accessible out of ui-scroll via user defined adapter\r\n const publicProps = ['isLoading', 'topVisible', 'topVisibleElement', 'topVisibleScope', 'bottomVisible', 'bottomVisibleElement', 'bottomVisibleScope'];\r\n for (let i = publicProps.length - 1; i >= 0; i--) {\r\n let property, attr = this.$attr[publicProps[i]];\r\n Object.defineProperty(this, publicProps[i], {\r\n get: () => property,\r\n set: (value) => {\r\n property = value;\r\n this.publicContext[publicProps[i]] = value;\r\n if (attr) {\r\n this.$parse(attr).assign(this.startScope, value);\r\n }\r\n }\r\n });\r\n }\r\n\r\n // non-read-only public property\r\n Object.defineProperty(this.publicContext, 'disabled', {\r\n get: () => this.disabled,\r\n set: (value) => (!(this.disabled = value)) ? this.doAdjust() : null\r\n });\r\n }\r\n\r\n loading(value) {\r\n this.isLoading = value;\r\n }\r\n\r\n isBOF() {\r\n return this.buffer.bof;\r\n }\r\n\r\n isEOF() {\r\n return this.buffer.eof;\r\n }\r\n\r\n isEmpty() {\r\n return !this.buffer.length;\r\n }\r\n\r\n append(newItems) {\r\n this.buffer.append(newItems);\r\n this.doAdjust();\r\n this.viewport.clipTop();\r\n this.viewport.clipBottom();\r\n }\r\n\r\n prepend(newItems) {\r\n this.buffer.prepend(newItems);\r\n this.doAdjust();\r\n this.viewport.clipTop();\r\n this.viewport.clipBottom();\r\n }\r\n\r\n applyUpdates(arg1, arg2) {\r\n if (typeof arg1 === 'function') {\r\n this.applyUpdatesFunc(arg1);\r\n } else {\r\n this.applyUpdatesIndex(arg1, arg2);\r\n }\r\n this.doAdjust();\r\n }\r\n\r\n applyUpdatesFunc(cb) {\r\n this.buffer.slice(0).forEach((wrapper) => {\r\n // we need to do it on the buffer clone, because buffer content\r\n // may change as we iterate through\r\n this.applyUpdate(wrapper, cb(wrapper.item, wrapper.scope, wrapper.element));\r\n });\r\n }\r\n\r\n applyUpdatesIndex(index, newItems) {\r\n if (index % 1 !== 0) {\r\n throw new Error('applyUpdates - ' + index + ' is not a valid index (should be an integer)');\r\n }\r\n const _index = index - this.buffer.first;\r\n\r\n // apply updates only within buffer\r\n if (_index >= 0 && _index < this.buffer.length) {\r\n this.applyUpdate(this.buffer[_index], newItems);\r\n }\r\n // out-of-buffer case: deletion may affect Paddings\r\n else if(index >= this.buffer.getAbsMinIndex() && index <= this.buffer.getAbsMaxIndex()) {\r\n if(angular.isArray(newItems) && !newItems.length) {\r\n this.viewport.removeCacheItem(index, index === this.buffer.minIndex);\r\n if(index === this.buffer.getAbsMinIndex()) {\r\n this.buffer.incrementMinIndex();\r\n }\r\n else {\r\n this.buffer.decrementMaxIndex();\r\n }\r\n }\r\n }\r\n }\r\n\r\n applyUpdate(wrapper, newItems) {\r\n if (!angular.isArray(newItems)) {\r\n return;\r\n }\r\n let position = this.buffer.indexOf(wrapper);\r\n if (!newItems.reverse().some(newItem => newItem === wrapper.item)) {\r\n wrapper.op = 'remove';\r\n if(position === 0 && !newItems.length) {\r\n wrapper._op = 'isTop'; // to catch \"first\" edge case on remove\r\n }\r\n }\r\n newItems.forEach((newItem) => {\r\n if (newItem === wrapper.item) {\r\n position--;\r\n } else {\r\n // 3 parameter (isTop) is to catch \"first\" edge case on insert\r\n this.buffer.insert(position + 1, newItem, position === -1);\r\n }\r\n });\r\n }\r\n\r\n calculateProperties() {\r\n let rowTop = null, topHeight = 0;\r\n let topDone = false, bottomDone = false;\r\n const length = this.buffer.length;\r\n\r\n for (let i = 0; i < length; i++) {\r\n const item = this.buffer[i];\r\n const itemTop = item.element.offset().top;\r\n\r\n if (rowTop !== itemTop) { // a new row condition\r\n const itemHeight = item.element.outerHeight(true);\r\n const top = this.viewport.topDataPos() + topHeight + itemHeight;\r\n\r\n if (!topDone && top > this.viewport.topVisiblePos()) {\r\n topDone = true;\r\n this['topVisible'] = item.item;\r\n this['topVisibleElement'] = item.element;\r\n this['topVisibleScope'] = item.scope;\r\n }\r\n if (!bottomDone && (top >= this.viewport.bottomVisiblePos() || (i === length - 1 && this.isEOF()))) {\r\n bottomDone = true;\r\n this['bottomVisible'] = item.item;\r\n this['bottomVisibleElement'] = item.element;\r\n this['bottomVisibleScope'] = item.scope;\r\n }\r\n topHeight += itemHeight;\r\n }\r\n rowTop = itemTop;\r\n\r\n if (topDone && bottomDone) {\r\n break;\r\n }\r\n }\r\n }\r\n\r\n}\r\n\r\nexport default Adapter;\r\n","import JQLiteExtras from './modules/jqLiteExtras';\nimport ElementRoutines from './modules/elementRoutines.js';\nimport ScrollBuffer from './modules/buffer.js';\nimport Viewport from './modules/viewport.js';\nimport Adapter from './modules/adapter.js';\n\nangular.module('ui.scroll', [])\n\n .constant('JQLiteExtras', JQLiteExtras)\n .run(['JQLiteExtras', (JQLiteExtras) => {\n !window.jQuery ? (new JQLiteExtras()).registerFor(angular.element) : null;\n ElementRoutines.addCSSRules();\n }])\n\n .directive('uiScrollViewport', function () {\n return {\n restrict: 'A',\n controller: [\n '$scope',\n '$element',\n function (scope, element) {\n this.container = element;\n this.viewport = element;\n this.scope = scope;\n\n angular.forEach(element.children(), child => {\n if (child.tagName.toLowerCase() === 'tbody') {\n this.viewport = angular.element(child);\n }\n });\n\n return this;\n }\n ]\n };\n })\n\n .directive('uiScroll', [\n '$log',\n '$injector',\n '$rootScope',\n '$timeout',\n '$interval',\n '$q',\n '$parse',\n function (console, $injector, $rootScope, $timeout, $interval, $q, $parse) {\n\n return {\n require: ['?^uiScrollViewport'],\n restrict: 'A',\n transclude: 'element',\n priority: 1000,\n terminal: true,\n link: link\n };\n\n function link($scope, element, $attr, controllers, linker) {\n const match = $attr.uiScroll.match(/^\\s*(\\w+)\\s+in\\s+([(\\w|\\$)\\.]+)\\s*$/);\n if (!match) {\n throw new Error('Expected uiScroll in form of \\'_item_ in _datasource_\\' but got \\'' + $attr.uiScroll + '\\'');\n }\n\n function parseNumber(value, defaultValue, isFloat) {\n if (!isFloat) {\n value = value === null ? defaultValue : Math.floor(value);\n }\n return isNaN(value) ? defaultValue : value;\n }\n\n function parseNumericAttr(value, defaultValue, isFloat) {\n const result = $parse(value)($scope);\n return parseNumber(result, defaultValue, isFloat);\n }\n\n const BUFFER_MIN = 3; // Minimum size of the data source request\n const BUFFER_DEFAULT = 10; // Default datasource request size\n const PADDING_MIN = 0.3; // Mininum # of rows in the padding area\n const PADDING_DEFAULT = 0.5; // Default # of rows in the padding area\n const START_INDEX_DEFAULT = 1; // Default start index when requestng the first data block\n const MAX_VIEWPORT_DELAY = 500; // Max time wait (ms) to get the viewport with an height>0\n const VIEWPORT_POLLING_INTERVAL = 50; // Interval used to check the initial viewport height\n\n let datasource = null;\n const itemName = match[1]; // Name of the index variable to publish\n const datasourceName = match[2]; // Name of the datasource to request the rows from\n const viewportController = controllers[0]; // ViewportController, as specified in the require option (http://websystique.com/angularjs/angularjs-custom-directives-controllers-require-option-guide/)\n const bufferSize = Math.max(BUFFER_MIN, parseNumericAttr($attr.bufferSize, BUFFER_DEFAULT)); \n const padding = Math.max(PADDING_MIN, parseNumericAttr($attr.padding, PADDING_DEFAULT, true));\n let startIndex = parseNumericAttr($attr.startIndex, START_INDEX_DEFAULT);\n\n // PHIL: Provide a fixed row height\n // \n const rowHeight = parseNumericAttr($attr.rowheight,null,false);\n\n // Revision IDs\n // \n let ridActual = 0; // current data revision id\n let pending = [];\n\n const elementRoutines = new ElementRoutines($injector, $q);\n const buffer = new ScrollBuffer(elementRoutines, bufferSize, startIndex);\n const viewport = new Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding, rowHeight);\n const adapter = new Adapter($scope, $parse, $attr, viewport, buffer, doAdjust, reload);\n\n if (viewportController) {\n viewportController.adapter = adapter;\n }\n\n const isDatasourceValid = () =>\n Object.prototype.toString.call(datasource) === '[object Object]' && typeof datasource.get === 'function';\n\n datasource = $parse(datasourceName)($scope); // try to get datasource on scope\n if (!isDatasourceValid()) {\n datasource = $injector.get(datasourceName); // try to inject datasource as service\n if (!isDatasourceValid()) {\n throw new Error(datasourceName + ' is not a valid datasource');\n }\n }\n\n let onRenderHandlers = [];\n function onRenderHandlersRunner() {\n onRenderHandlers.forEach(handler => handler.run());\n onRenderHandlers = [];\n }\n function persistDatasourceIndex(datasource, propName) {\n let getter;\n // need to postpone min/maxIndexUser processing if the view is empty\n if(angular.isNumber(datasource[propName])) {\n getter = datasource[propName];\n if(angular.isNumber(getter)) {\n onRenderHandlers = onRenderHandlers.filter(handler => handler.id !== propName);\n onRenderHandlers.push({\n id: propName,\n run: () => datasource[propName] = getter\n });\n }\n }\n }\n\n function defineDatasourceIndex(datasource, propName, propUserName) {\n const descriptor = Object.getOwnPropertyDescriptor(datasource, propName);\n if (descriptor && (descriptor.set || descriptor.get)) {\n return;\n }\n let getter;\n persistDatasourceIndex(datasource, propName);\n Object.defineProperty(datasource, propName, {\n set: (value) => {\n getter = value;\n if(pending.length && !buffer.length) {\n persistDatasourceIndex(datasource, propName);\n return;\n }\n buffer[propUserName] = value;\n const topPaddingHeightOld = viewport.topDataPos();\n viewport.adjustPaddings();\n if (propName === 'minIndex') {\n viewport.onAfterMinIndexSet(topPaddingHeightOld);\n }\n },\n get: () => getter\n });\n }\n\n defineDatasourceIndex(datasource, 'minIndex', 'minIndexUser');\n defineDatasourceIndex(datasource, 'maxIndex', 'maxIndexUser');\n\n const fetchNext = (datasource.get.length !== 2) ?\n (success) => datasource.get(buffer.next, bufferSize, success) :\n (success) => {\n datasource.get({\n index: buffer.next,\n append: buffer.length ? buffer[buffer.length - 1].item : void 0,\n count: bufferSize\n }, success);\n };\n\n const fetchPrevious = (datasource.get.length !== 2) ?\n (success) => datasource.get(buffer.first - bufferSize, bufferSize, success) :\n (success) => {\n datasource.get({\n index: buffer.first - bufferSize,\n prepend: buffer.length ? buffer[0].item : void 0,\n count: bufferSize\n }, success);\n };\n\n const initialize = () => {\n let tryCount = 0;\n if(!viewport.applyContainerStyle()) {\n const timer = $interval(() => {\n tryCount++;\n if(viewport.applyContainerStyle()) {\n $interval.cancel(timer);\n doAdjust();\n }\n if(tryCount * VIEWPORT_POLLING_INTERVAL >= MAX_VIEWPORT_DELAY) {\n $interval.cancel(timer);\n throw Error(`ui-scroll directive requires a viewport with non-zero height in ${MAX_VIEWPORT_DELAY}ms`);\n }\n }, VIEWPORT_POLLING_INTERVAL);\n }\n else {\n doAdjust();\n }\n };\n\n /**\n * Build padding elements\n *\n * Calling linker is the only way I found to get access to the tag name of the template\n * to prevent the directive scope from pollution a new scope is created and destroyed\n * right after the builder creation is completed\n */\n linker((clone, scope) => {\n viewport.createPaddingElements(clone[0]);\n // we do not include the clone in the DOM. It means that the nested directives will not\n // be able to reach the parent directives, but in this case it is intentional because we\n // created the clone to access the template tag name\n scope.$destroy();\n clone.remove();\n });\n\n $scope.$on('$destroy', () => {\n unbindEvents();\n viewport.unbind('mousewheel', wheelHandler);\n });\n\n viewport.bind('mousewheel', wheelHandler);\n\n initialize();\n\n /* Private function definitions */\n\n function isInvalid(rid) {\n return (rid && rid !== ridActual) || $scope.$$destroyed;\n }\n\n function bindEvents() {\n viewport.bind('resize', resizeAndScrollHandler);\n viewport.bind('scroll', resizeAndScrollHandler);\n }\n\n function unbindEvents() {\n viewport.unbind('resize', resizeAndScrollHandler);\n viewport.unbind('scroll', resizeAndScrollHandler);\n }\n\n function reload() {\n viewport.resetTopPadding();\n viewport.resetBottomPadding();\n if (arguments.length) {\n startIndex = parseNumber(arguments[0], START_INDEX_DEFAULT, false);\n }\n buffer.reset(startIndex);\n persistDatasourceIndex(datasource, 'minIndex');\n persistDatasourceIndex(datasource, 'maxIndex');\n doAdjust();\n }\n\n function isElementVisible(wrapper) {\n if(rowHeight) {\n return true;\n }\n return wrapper.element.height() && wrapper.element[0].offsetParent;\n }\n\n function visibilityWatcher(wrapper) {\n if (isElementVisible(wrapper)) {\n buffer.forEach((item) => {\n if (typeof item.unregisterVisibilityWatcher === 'function') {\n item.unregisterVisibilityWatcher();\n delete item.unregisterVisibilityWatcher;\n }\n });\n if (!pending.length) {\n $timeout(() => doAdjust());\n }\n }\n }\n\n function insertWrapperContent(wrapper, insertAfter) {\n createElement(wrapper, insertAfter, viewport.insertElement);\n if (!isElementVisible(wrapper)) {\n wrapper.unregisterVisibilityWatcher = wrapper.scope.$watch(() => visibilityWatcher(wrapper));\n }\n elementRoutines.hideElement(wrapper); // hide inserted elements before data binding\n }\n\n function createElement(wrapper, insertAfter, insertElement) {\n let promises = null;\n const sibling = (insertAfter > 0) ? buffer[insertAfter - 1].element : undefined;\n linker((clone, scope) => {\n promises = insertElement(clone, sibling);\n wrapper.element = clone;\n wrapper.scope = scope;\n scope[itemName] = wrapper.item;\n });\n // ui-scroll-grid apply\n if (adapter.transform) {\n const tdInitializer = wrapper.scope.uiScrollTdInitializer;\n if (tdInitializer && tdInitializer.linking) {\n adapter.transform(wrapper.scope, wrapper.element);\n } else {\n wrapper.scope.uiScrollTdInitializer = {\n onLink: () => adapter.transform(wrapper.scope, wrapper.element),\n scope: wrapper.scope\n };\n }\n }\n return promises;\n }\n\n function updateDOM() {\n let promises = [];\n const toBePrepended = [];\n const toBeRemoved = [];\n const inserted = [];\n\n buffer.forEach((wrapper, i) => {\n switch (wrapper.op) {\n case 'prepend':\n toBePrepended.unshift(wrapper);\n break;\n case 'append':\n insertWrapperContent(wrapper, i);\n wrapper.op = 'none';\n inserted.push(wrapper);\n break;\n case 'insert':\n promises = promises.concat(createElement(wrapper, i, viewport.insertElementAnimated));\n wrapper.op = 'none';\n inserted.push(wrapper);\n break;\n case 'remove':\n toBeRemoved.push(wrapper);\n }\n });\n\n toBeRemoved.forEach((wrapper) => promises = promises.concat(viewport.removeItem(wrapper)));\n\n if (toBePrepended.length)\n toBePrepended.forEach((wrapper) => {\n insertWrapperContent(wrapper);\n wrapper.op = 'none';\n });\n\n buffer.forEach((item, i) => item.scope.$index = buffer.first + i);\n\n return {\n prepended: toBePrepended,\n removed: toBeRemoved,\n inserted: inserted,\n animated: promises\n };\n\n }\n\n // Adjust the viewport paddings\n // \n function updatePaddings(rid, updates) {\n // schedule another doAdjust after animation completion\n if (updates.animated.length) {\n $q.all(updates.animated).then(() => {\n viewport.adjustPaddings();\n doAdjust(rid);\n });\n } else {\n viewport.adjustPaddings();\n }\n }\n\n function enqueueFetch(rid, updates) {\n if (viewport.shouldLoadBottom()) {\n if (!updates || buffer.effectiveHeight(updates.inserted) > 0) {\n // this means that at least one item appended in the last batch has height > 0\n if (pending.push(true) === 1) {\n adapter.loading(true);\n fetch(rid);\n }\n }\n } else if (viewport.shouldLoadTop()) {\n if ((!updates || buffer.effectiveHeight(updates.prepended) > 0) || pending[0]) {\n // this means that at least one item appended in the last batch has height > 0\n // pending[0] = true means that previous fetch was appending. We need to force at least one prepend\n // BTW there will always be at least 1 element in the pending array because bottom is fetched first\n if (pending.push(false) === 1) {\n adapter.loading(true);\n fetch(rid);\n }\n }\n }\n }\n\n function processUpdates() {\n const updates = updateDOM();\n\n // We need the item bindings to be processed before we can do adjustments\n if(!rowHeight) {\n !$scope.$$phase && !$rootScope.$$phase && $scope.$digest();\n }\n \n updates.inserted.forEach(w => elementRoutines.showElement(w));\n updates.prepended.forEach(w => elementRoutines.showElement(w));\n return updates;\n }\n\n function doAdjust(rid) {\n if (!rid) { // dismiss pending requests\n pending = [];\n rid = ++ridActual;\n }\n\n const updates = processUpdates();\n\n if (isInvalid(rid)) {\n return;\n }\n\n updatePaddings(rid, updates);\n enqueueFetch(rid);\n\n if (!pending.length) {\n adapter.calculateProperties();\n }\n }\n\n function doAdjustAfterFetch(rid) {\n const updates = processUpdates();\n\n viewport.onAfterPrepend(updates);\n\n if (isInvalid(rid)) {\n return;\n }\n\n updatePaddings(rid, updates);\n onRenderHandlersRunner();\n enqueueFetch(rid, updates);\n pending.shift();\n\n if (pending.length)\n fetch(rid);\n else {\n adapter.loading(false);\n bindEvents();\n adapter.calculateProperties();\n }\n }\n\n function fetch(rid) {\n if (pending[0]) {// scrolling down\n if (buffer.length && !viewport.shouldLoadBottom()) {\n doAdjustAfterFetch(rid);\n } else {\n fetchNext((result) => {\n if (isInvalid(rid)) {\n return;\n }\n\n if (result.length < bufferSize) {\n buffer.eof = true;\n }\n\n if (result.length > 0) {\n viewport.clipTop();\n buffer.append(result);\n }\n\n doAdjustAfterFetch(rid);\n });\n }\n } else { // scrolling up\n if (buffer.length && !viewport.shouldLoadTop()) {\n doAdjustAfterFetch(rid);\n } else {\n fetchPrevious((result) => {\n if (isInvalid(rid)) {\n return;\n }\n\n if (result.length < bufferSize) {\n buffer.bof = true;\n // log 'bof is reached'\n }\n\n if (result.length > 0) {\n if (buffer.length) {\n viewport.clipBottom();\n }\n buffer.prepend(result);\n }\n\n doAdjustAfterFetch(rid);\n });\n }\n }\n }\n\n function resizeAndScrollHandler() {\n if (!$rootScope.$$phase && !adapter.isLoading && !adapter.disabled) {\n\n enqueueFetch(ridActual);\n\n if (pending.length) {\n unbindEvents();\n } else {\n adapter.calculateProperties();\n if(!rowHeight) {\n // The digest is forced to calculate the height, which is not necessary when the height is knowm\n !$scope.$$phase && $scope.$digest();\n }\n }\n }\n }\n\n function wheelHandler(event) {\n if (!adapter.disabled) {\n const scrollTop = viewport[0].scrollTop;\n const yMax = viewport[0].scrollHeight - viewport[0].clientHeight;\n\n if ((scrollTop === 0 && !buffer.bof) || (scrollTop === yMax && !buffer.eof)) {\n event.preventDefault();\n }\n }\n }\n }\n\n }\n ]);\n"],"sourceRoot":""} \ No newline at end of file diff --git a/src/ui-scroll.js b/src/ui-scroll.js index 1db30316..4192d349 100644 --- a/src/ui-scroll.js +++ b/src/ui-scroll.js @@ -396,8 +396,10 @@ angular.module('ui.scroll', []) const updates = updateDOM(); // We need the item bindings to be processed before we can do adjustments - !$scope.$$phase && !$rootScope.$$phase && $scope.$digest(); - + if(!rowHeight) { + !$scope.$$phase && !$rootScope.$$phase && $scope.$digest(); + } + updates.inserted.forEach(w => elementRoutines.showElement(w)); updates.prepended.forEach(w => elementRoutines.showElement(w)); return updates; From 71c2f331d27288ba9ba84563efcf05ece6ad4279 Mon Sep 17 00:00:00 2001 From: dhilt Date: Wed, 5 Jun 2019 18:53:54 +0300 Subject: [PATCH 03/18] fixedRowHeight demo --- demo/fixedRowHeight/fixedRowHeight.html | 64 +++++++++++++++++++++ demo/fixedRowHeight/fixedRowHeight.js | 74 +++++++++++++++++++++++++ demo/index.html | 5 ++ 3 files changed, 143 insertions(+) create mode 100644 demo/fixedRowHeight/fixedRowHeight.html create mode 100644 demo/fixedRowHeight/fixedRowHeight.js diff --git a/demo/fixedRowHeight/fixedRowHeight.html b/demo/fixedRowHeight/fixedRowHeight.html new file mode 100644 index 00000000..827cc167 --- /dev/null +++ b/demo/fixedRowHeight/fixedRowHeight.html @@ -0,0 +1,64 @@ + + + + + + Fixed Row Height + + + + + + + + +
    + + browse other examples + +

    Fixed Row Height

    + +
    +

    + If the height of all the viewport rows is known and not going to be changed, + it might be passed as "row-height" attribute. + This reduces inner calculations and browser reflows, + which leads to a performance increase. +

    +
    + +
    + performance decrease coefficient (0 - fastest) +
    + +
    +
    +
    + + {{item.text}} + + + + {{getSum(item)}} + {{getMul(item)}} + {{getText(item)}} + + +
    + {{item.text}} + + + + {{getSum(item)}} + {{getMul(item)}} + {{getText(item)}} +
    +     + +
    +
    +
    + + + + \ No newline at end of file diff --git a/demo/fixedRowHeight/fixedRowHeight.js b/demo/fixedRowHeight/fixedRowHeight.js new file mode 100644 index 00000000..93185574 --- /dev/null +++ b/demo/fixedRowHeight/fixedRowHeight.js @@ -0,0 +1,74 @@ +angular.module('application', ['ui.scroll']) + + .controller('MainCtrl', ($scope) => { + $scope.hello = 'Hello Main Controller!'; + + let min = -150, max = 200, delay = 0, inputs = 10; + + const getInput = index => { + const result = []; + for (let i = 0; i < inputs; i++) { + result.push({ value: ((index % 2 === 0 ? -1 : 1) * (i + 1)).toString() }); + } + return result; + } + + const data = []; + for (let i = min; i <= max; i++) { + height = 50 + (i + 1); + data.push({ + index: i, + text: 'item #' + i, + input: getInput(i) + }); + } + + $scope.datasource = { + get: (index, count, success) => { + console.log('Getting ' + count + ' items started from ' + index + '...'); + setTimeout(() => { + const result = []; + const start = Math.max(min, index); + const end = Math.min(index + count - 1, max); + if (start <= end) { + for (let i = start; i <= end; i++) { + const _item = data.find(item => item.index === i); + if (_item) { + result.push(_item); + } + } + } + console.log('Got ' + result.length + ' items [' + start + '..' + end + ']'); + success(result); + }, delay); + } + }; + + $scope.getSum = item => + item.input.reduce((a, i) => a + Number(i.value), 0); + + $scope.getMul = item => + item.input.reduce((a, i) => a * Number(i.value), 1); + + $scope.getText = item => { + const num = $scope.getMul(item).toString(); + const result = []; + for (let i = 0; i < item.text.length; i++) { + result.push(item.text[i]); + result.push(i < num.length ? num[i] : 'x'); + } + return result.join(''); + } + + const perfSlowCountDefault = 2; + $scope.perfSlowCount = perfSlowCountDefault; + $scope.perfSlowCountList = []; + $scope.$watch('perfSlowCount', () => { + let size = Number($scope.perfSlowCount); + if (isNaN(size)) { + size = perfSlowCountDefault; + } + $scope.perfSlowCountList = (new Array(size)).fill(0); + }) + + }); diff --git a/demo/index.html b/demo/index.html index d2c32b7c..e1692ea3 100644 --- a/demo/index.html +++ b/demo/index.html @@ -64,6 +64,11 @@

    Scroller Examples

    Bottom visible (Adapter) +
  • + + Fixed row height (higher perfromance) + +
  • Reload datasource to specified index From 8f4bece2b3696a05daafffe693fdd85406d571b8 Mon Sep 17 00:00:00 2001 From: dhilt Date: Wed, 5 Jun 2019 18:55:46 +0300 Subject: [PATCH 04/18] release processUpdates --- src/ui-scroll.js | 22 +++++++++++----------- 1 file changed, 11 insertions(+), 11 deletions(-) diff --git a/src/ui-scroll.js b/src/ui-scroll.js index 4192d349..6234e0dc 100644 --- a/src/ui-scroll.js +++ b/src/ui-scroll.js @@ -90,7 +90,7 @@ angular.module('ui.scroll', []) // PHIL: Provide a fixed row height // - const rowHeight = parseNumericAttr($attr.rowheight,null,false); + const rowHeight = parseNumericAttr($attr.rowHeight, null, false); // Revision IDs // @@ -259,9 +259,6 @@ angular.module('ui.scroll', []) } function isElementVisible(wrapper) { - if(rowHeight) { - return true; - } return wrapper.element.height() && wrapper.element[0].offsetParent; } @@ -281,10 +278,12 @@ angular.module('ui.scroll', []) function insertWrapperContent(wrapper, insertAfter) { createElement(wrapper, insertAfter, viewport.insertElement); - if (!isElementVisible(wrapper)) { + if (!rowHeight && !isElementVisible(wrapper)) { wrapper.unregisterVisibilityWatcher = wrapper.scope.$watch(() => visibilityWatcher(wrapper)); } - elementRoutines.hideElement(wrapper); // hide inserted elements before data binding + if (!rowHeight) { + elementRoutines.hideElement(wrapper); // hide inserted elements before data binding + } } function createElement(wrapper, insertAfter, insertElement) { @@ -396,12 +395,13 @@ angular.module('ui.scroll', []) const updates = updateDOM(); // We need the item bindings to be processed before we can do adjustments - if(!rowHeight) { - !$scope.$$phase && !$rootScope.$$phase && $scope.$digest(); + !$scope.$$phase && !$rootScope.$$phase && $scope.$digest(); + + if (!rowHeight) { + updates.inserted.forEach(w => elementRoutines.showElement(w)); + updates.prepended.forEach(w => elementRoutines.showElement(w)); } - - updates.inserted.forEach(w => elementRoutines.showElement(w)); - updates.prepended.forEach(w => elementRoutines.showElement(w)); + return updates; } From 551bff34179d57d8f34b16c7fd6281410be1fe34 Mon Sep 17 00:00:00 2001 From: Philippe Riand Date: Thu, 6 Jun 2019 17:34:29 -0400 Subject: [PATCH 05/18] Separated visbiility watch & row height. Added "allow-visibility-watch=false" to the fixed scroll demo, for now... --- demo/fixedRowHeight/fixedRowHeight.html | 2 +- dist/ui-scroll-grid.js | 2 +- dist/ui-scroll.js | 35 +++++++++++++------------ dist/ui-scroll.js.map | 2 +- dist/ui-scroll.min.js | 2 +- dist/ui-scroll.min.js.map | 2 +- src/ui-scroll.js | 11 +++++--- 7 files changed, 30 insertions(+), 26 deletions(-) diff --git a/demo/fixedRowHeight/fixedRowHeight.html b/demo/fixedRowHeight/fixedRowHeight.html index 827cc167..56f0979a 100644 --- a/demo/fixedRowHeight/fixedRowHeight.html +++ b/demo/fixedRowHeight/fixedRowHeight.html @@ -32,7 +32,7 @@

    Fixed Row Height

    • -
    +
    {{item.text}} diff --git a/dist/ui-scroll-grid.js b/dist/ui-scroll-grid.js index f222bd9a..68604208 100644 --- a/dist/ui-scroll-grid.js +++ b/dist/ui-scroll-grid.js @@ -1,7 +1,7 @@ /*! * angular-ui-scroll * https://github.com/angular-ui/ui-scroll - * Version: 1.7.3 -- 2019-06-04T19:31:22.331Z + * Version: 1.7.3 -- 2019-06-06T21:24:29.934Z * License: MIT */ /******/ (function(modules) { // webpackBootstrap diff --git a/dist/ui-scroll.js b/dist/ui-scroll.js index bac617c1..6ec58608 100644 --- a/dist/ui-scroll.js +++ b/dist/ui-scroll.js @@ -1,7 +1,7 @@ /*! * angular-ui-scroll * https://github.com/angular-ui/ui-scroll - * Version: 1.7.3 -- 2019-06-04T19:31:22.331Z + * Version: 1.7.3 -- 2019-06-06T21:24:29.934Z * License: MIT */ /******/ (function(modules) { // webpackBootstrap @@ -1336,7 +1336,9 @@ angular.module('ui.scroll', []).constant('JQLiteExtras', jqLiteExtras_JQLiteExtr var startIndex = parseNumericAttr($attr.startIndex, START_INDEX_DEFAULT); // PHIL: Provide a fixed row height // - var rowHeight = parseNumericAttr($attr.rowheight, null, false); // Revision IDs + var rowHeight = parseNumericAttr($attr.rowHeight, null, false); // PHIL: Read the visibility watch option, true by default + + var allowVisibilityWatch = $attr.allowVisibilityWatch !== 'false'; // Revision IDs // var ridActual = 0; // current data revision id @@ -1522,11 +1524,7 @@ angular.module('ui.scroll', []).constant('JQLiteExtras', jqLiteExtras_JQLiteExtr } function isElementVisible(wrapper) { - if (rowHeight) { - return true; - } - - return wrapper.element.height() && wrapper.element[0].offsetParent; + return (rowHeight || wrapper.element.height()) && wrapper.element[0].offsetParent; } function visibilityWatcher(wrapper) { @@ -1549,13 +1547,15 @@ angular.module('ui.scroll', []).constant('JQLiteExtras', jqLiteExtras_JQLiteExtr function insertWrapperContent(wrapper, insertAfter) { createElement(wrapper, insertAfter, viewport.insertElement); - if (!isElementVisible(wrapper)) { + if (allowVisibilityWatch && !isElementVisible(wrapper)) { wrapper.unregisterVisibilityWatcher = wrapper.scope.$watch(function () { return visibilityWatcher(wrapper); }); } - elementRoutines.hideElement(wrapper); // hide inserted elements before data binding + if (allowVisibilityWatch) { + elementRoutines.hideElement(wrapper); // hide inserted elements before data binding + } } function createElement(wrapper, insertAfter, insertElement) { @@ -1670,16 +1670,17 @@ angular.module('ui.scroll', []).constant('JQLiteExtras', jqLiteExtras_JQLiteExtr function processUpdates() { var updates = updateDOM(); // We need the item bindings to be processed before we can do adjustments - if (!rowHeight) { - !$scope.$$phase && !$rootScope.$$phase && $scope.$digest(); + !$scope.$$phase && !$rootScope.$$phase && $scope.$digest(); + + if (allowVisibilityWatch) { + updates.inserted.forEach(function (w) { + return elementRoutines.showElement(w); + }); + updates.prepended.forEach(function (w) { + return elementRoutines.showElement(w); + }); } - updates.inserted.forEach(function (w) { - return elementRoutines.showElement(w); - }); - updates.prepended.forEach(function (w) { - return elementRoutines.showElement(w); - }); return updates; } diff --git a/dist/ui-scroll.js.map b/dist/ui-scroll.js.map index a8d879dc..b8d0b815 100644 --- a/dist/ui-scroll.js.map +++ b/dist/ui-scroll.js.map @@ -1 +1 @@ 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missing methods\r\n return angular.forEach({\r\n before(newElem) {\r\n var children, elem, i, j, parent, ref, self;\r\n self = this;\r\n elem = self[0];\r\n parent = self.parent();\r\n children = parent.contents();\r\n if (children[0] === elem) {\r\n return parent.prepend(newElem);\r\n } else {\r\n for (i = j = 1, ref = children.length - 1; 1 <= ref ? j <= ref : j >= ref; i = 1 <= ref ? ++j : --j) {\r\n if (children[i] === elem) {\r\n angular.element(children[i - 1]).after(newElem);\r\n return;\r\n }\r\n }\r\n throw new Error('invalid DOM structure ' + elem.outerHTML);\r\n }\r\n },\r\n height (value){\r\n var self;\r\n self = this;\r\n if (typeof value !== 'undefined') {\r\n if (angular.isNumber(value)) {\r\n value = value + 'px';\r\n }\r\n return css.call(self, 'height', value);\r\n } else {\r\n return getWidthHeight(this[0], 'height', 'base');\r\n }\r\n },\r\n outerHeight(option) {\r\n return getWidthHeight(this[0], 'height', option ? 'outerfull' : 'outer');\r\n },\r\n outerWidth(option) {\r\n return getWidthHeight(this[0], 'width', option ? 'outerfull' : 'outer');\r\n },\r\n\r\n /*\r\n The offset setter method is not implemented\r\n */\r\n offset(value) {\r\n let docElem, win;\r\n let self = this;\r\n let box = {\r\n top: 0,\r\n left: 0\r\n };\r\n let elem = self[0];\r\n let doc = elem && elem.ownerDocument;\r\n\r\n if (arguments.length) {\r\n if (value === undefined) {\r\n return self;\r\n }\r\n // TODO: implement setter\r\n throw new Error('offset setter method is not implemented');\r\n }\r\n\r\n if (!doc) {\r\n return;\r\n }\r\n\r\n docElem = doc.documentElement;\r\n\r\n // TODO: Make sure it's not a disconnected DOM node\r\n\r\n if (elem.getBoundingClientRect != null) {\r\n box = elem.getBoundingClientRect();\r\n }\r\n\r\n win = doc.defaultView || doc.parentWindow;\r\n\r\n return {\r\n top: box.top + (win.pageYOffset || docElem.scrollTop) - (docElem.clientTop || 0),\r\n left: box.left + (win.pageXOffset || docElem.scrollLeft) - (docElem.clientLeft || 0)\r\n };\r\n },\r\n scrollTop(value) {\r\n return scrollTo(this, 'top', value);\r\n },\r\n scrollLeft(value) {\r\n return scrollTo(this, 'left', value);\r\n }\r\n }, (value, key) => {\r\n if (!element.prototype[key]) {\r\n return element.prototype[key] = value;\r\n }\r\n });\r\n }\r\n\r\n}\r\n","const hideClassToken = 'ng-ui-scroll-hide';\r\n\r\nexport default class ElementRoutines {\r\n\r\n static addCSSRules() {\r\n const selector = '.' + hideClassToken;\r\n const rules = 'display: none';\r\n const sheet = document.styleSheets[0];\r\n let index;\r\n try {\r\n index = sheet.cssRules.length;\r\n } catch (err) {\r\n index = 0;\r\n }\r\n if('insertRule' in sheet) {\r\n sheet.insertRule(selector + '{' + rules + '}', index);\r\n }\r\n else if('addRule' in sheet) {\r\n sheet.addRule(selector, rules, index);\r\n }\r\n }\r\n\r\n constructor($injector, $q) {\r\n this.$animate = ($injector.has && $injector.has('$animate')) ? $injector.get('$animate') : null;\r\n this.isAngularVersionLessThen1_3 = angular.version.major === 1 && angular.version.minor < 3;\r\n this.$q = $q;\r\n }\r\n\r\n hideElement(wrapper) {\r\n wrapper.element.addClass(hideClassToken);\r\n }\r\n\r\n showElement(wrapper) {\r\n wrapper.element.removeClass(hideClassToken);\r\n }\r\n\r\n insertElement(newElement, previousElement) {\r\n previousElement.after(newElement);\r\n return [];\r\n }\r\n\r\n removeElement(wrapper) {\r\n wrapper.element.remove();\r\n wrapper.scope.$destroy();\r\n return [];\r\n }\r\n\r\n insertElementAnimated(newElement, previousElement) {\r\n if (!this.$animate) {\r\n return this.insertElement(newElement, previousElement);\r\n }\r\n\r\n if (this.isAngularVersionLessThen1_3) {\r\n const deferred = this.$q.defer();\r\n // no need for parent - previous element is never null\r\n this.$animate.enter(newElement, null, previousElement, () => deferred.resolve());\r\n\r\n return [deferred.promise];\r\n }\r\n\r\n // no need for parent - previous element is never null\r\n return [this.$animate.enter(newElement, null, previousElement)];\r\n }\r\n\r\n removeElementAnimated(wrapper) {\r\n if (!this.$animate) {\r\n return this.removeElement(wrapper);\r\n }\r\n\r\n if (this.isAngularVersionLessThen1_3) {\r\n const deferred = this.$q.defer();\r\n this.$animate.leave(wrapper.element, () => {\r\n wrapper.scope.$destroy();\r\n return deferred.resolve();\r\n });\r\n\r\n return [deferred.promise];\r\n }\r\n\r\n return [(this.$animate.leave(wrapper.element)).then(() => wrapper.scope.$destroy())];\r\n }\r\n}","export default function ScrollBuffer(elementRoutines, bufferSize, startIndex) {\r\n const buffer = Object.create(Array.prototype);\r\n\r\n angular.extend(buffer, {\r\n size: bufferSize,\r\n\r\n reset(startIndex) {\r\n buffer.remove(0, buffer.length);\r\n buffer.eof = false;\r\n buffer.bof = false;\r\n buffer.first = startIndex;\r\n buffer.next = startIndex;\r\n buffer.minIndex = startIndex;\r\n buffer.maxIndex = startIndex;\r\n buffer.minIndexUser = null;\r\n buffer.maxIndexUser = null;\r\n },\r\n\r\n append(items) {\r\n items.forEach((item) => {\r\n ++buffer.next;\r\n buffer.insert('append', item);\r\n });\r\n buffer.maxIndex = buffer.eof ? buffer.next - 1 : Math.max(buffer.next - 1, buffer.maxIndex);\r\n },\r\n\r\n prepend(items) {\r\n items.reverse().forEach((item) => {\r\n --buffer.first;\r\n buffer.insert('prepend', item);\r\n });\r\n buffer.minIndex = buffer.bof ? buffer.minIndex = buffer.first : Math.min(buffer.first, buffer.minIndex);\r\n },\r\n\r\n /**\r\n * inserts wrapped element in the buffer\r\n * the first argument is either operation keyword (see below) or a number for operation 'insert'\r\n * for insert the number is the index for the buffer element the new one have to be inserted after\r\n * operations: 'append', 'prepend', 'insert', 'remove', 'update', 'none'\r\n */\r\n insert(operation, item, isTop) {\r\n const wrapper = {\r\n item: item\r\n };\r\n\r\n if (operation % 1 === 0) {// it is an insert\r\n wrapper.op = 'insert';\r\n buffer.splice(operation, 0, wrapper);\r\n if(isTop) {\r\n buffer.first--;\r\n }\r\n else {\r\n buffer.next++;\r\n }\r\n } else {\r\n wrapper.op = operation;\r\n switch (operation) {\r\n case 'append':\r\n buffer.push(wrapper);\r\n break;\r\n case 'prepend':\r\n buffer.unshift(wrapper);\r\n break;\r\n }\r\n }\r\n },\r\n\r\n // removes elements from buffer\r\n remove(arg1, arg2) {\r\n if (angular.isNumber(arg1)) {\r\n // removes items from arg1 (including) through arg2 (excluding)\r\n for (let i = arg1; i < arg2; i++) {\r\n elementRoutines.removeElement(buffer[i]);\r\n }\r\n return buffer.splice(arg1, arg2 - arg1);\r\n }\r\n // removes single item(wrapper) from the buffer\r\n buffer.splice(buffer.indexOf(arg1), 1);\r\n if(arg1._op === 'isTop' && buffer.first === this.getAbsMinIndex()) {\r\n this.incrementMinIndex();\r\n }\r\n else {\r\n this.decrementMaxIndex();\r\n }\r\n if(arg1._op === 'isTop') {\r\n buffer.first++;\r\n }\r\n else {\r\n buffer.next--;\r\n }\r\n if(!buffer.length) {\r\n buffer.first = 1;\r\n buffer.next = 1;\r\n }\r\n\r\n return elementRoutines.removeElementAnimated(arg1);\r\n },\r\n\r\n incrementMinIndex() {\r\n if(buffer.minIndexUser !== null) {\r\n if(buffer.minIndex > buffer.minIndexUser) {\r\n buffer.minIndexUser++;\r\n return;\r\n }\r\n if(buffer.minIndex === buffer.minIndexUser) {\r\n buffer.minIndexUser++;\r\n }\r\n }\r\n buffer.minIndex++;\r\n },\r\n\r\n decrementMaxIndex() {\r\n if(buffer.maxIndexUser !== null && buffer.maxIndex <= buffer.maxIndexUser) {\r\n buffer.maxIndexUser--;\r\n }\r\n buffer.maxIndex--;\r\n },\r\n\r\n getAbsMinIndex() {\r\n if(buffer.minIndexUser !== null) {\r\n return Math.min(buffer.minIndexUser, buffer.minIndex);\r\n }\r\n return buffer.minIndex;\r\n },\r\n\r\n getAbsMaxIndex() {\r\n if(buffer.maxIndexUser !== null) {\r\n return Math.max(buffer.maxIndexUser, buffer.maxIndex);\r\n }\r\n return buffer.maxIndex;\r\n },\r\n\r\n effectiveHeight(elements) {\r\n if (!elements.length) {\r\n return 0;\r\n }\r\n let top = Number.MAX_VALUE;\r\n let bottom = Number.NEGATIVE_INFINITY;\r\n elements.forEach((wrapper) => {\r\n if (wrapper.element[0].offsetParent) {\r\n // element style is not display:none\r\n top = Math.min(top, wrapper.element.offset().top);\r\n bottom = Math.max(bottom, wrapper.element.offset().top + wrapper.element.outerHeight(true));\r\n }\r\n });\r\n return Math.max(0, bottom - top);\r\n }\r\n\r\n });\r\n\r\n buffer.reset(startIndex);\r\n\r\n return buffer;\r\n}\r\n","// Can't just extend the Array, due to Babel does not support built-in classes extending\r\n// This solution was taken from https://stackoverflow.com/questions/46897414/es6-class-extends-array-workaround-for-es5-babel-transpile\r\nclass CacheProto {\r\n add(item) {\r\n for (let i = this.length - 1; i >= 0; i--) {\r\n if (this[i].index === item.scope.$index) {\r\n this[i].height = this.rowHeight || item.element.outerHeight();\r\n return;\r\n }\r\n }\r\n this.push({\r\n index: item.scope.$index,\r\n height: this.rowHeight || item.element.outerHeight()\r\n });\r\n this.sort((a, b) => ((a.index < b.index) ? -1 : ((a.index > b.index) ? 1 : 0)));\r\n }\r\n\r\n remove(argument, _isTop) {\r\n const index = argument % 1 === 0 ? argument : argument.scope.$index;\r\n const isTop = argument % 1 === 0 ? _isTop : argument._op === 'isTop';\r\n for (let i = this.length - 1; i >= 0; i--) {\r\n if (this[i].index === index) {\r\n this.splice(i, 1);\r\n break;\r\n }\r\n }\r\n if(!isTop) {\r\n for (let i = this.length - 1; i >= 0; i--) {\r\n if (this[i].index > index) {\r\n this[i].index--;\r\n }\r\n }\r\n }\r\n }\r\n\r\n clear() {\r\n this.length = 0;\r\n }\r\n}\r\n\r\nfunction Cache() {\r\n const instance = [];\r\n instance.push.apply(instance, arguments);\r\n Object.setPrototypeOf(instance, Cache.prototype);\r\n return instance;\r\n}\r\nCache.prototype = Object.create(Array.prototype);\r\nObject.getOwnPropertyNames(CacheProto.prototype).forEach(methodName =>\r\n Cache.prototype[methodName] = CacheProto.prototype[methodName]\r\n);\r\n\r\nfunction generateElement(template) {\r\n if(template.nodeType !== Node.ELEMENT_NODE) {\r\n throw new Error('ui-scroll directive requires an Element node for templating the view');\r\n }\r\n let element;\r\n switch (template.tagName.toLowerCase()) {\r\n case 'dl':\r\n throw new Error(`ui-scroll directive does not support <${template.tagName}> as a repeating tag: ${template.outerHTML}`);\r\n case 'tr':\r\n let table = angular.element('
    ');\r\n element = table.find('tr');\r\n break;\r\n case 'li':\r\n element = angular.element('
  • ');\r\n break;\r\n default:\r\n element = angular.element('
    ');\r\n }\r\n return element;\r\n}\r\n\r\nclass Padding {\r\n constructor(template,rowHeight) {\r\n this.element = generateElement(template);\r\n this.cache = new Cache();\r\n this.cache.rowHeight = rowHeight;\r\n }\r\n\r\n height() {\r\n // When called wit a parameter, this sets the height of the padding\r\n return this.element.height.apply(this.element, arguments);\r\n }\r\n}\r\n\r\nexport default Padding;","import Padding from './padding';\r\n\r\nexport default function Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding, rowHeight) {\r\n let topPadding = null;\r\n let bottomPadding = null;\r\n const viewport = viewportController && viewportController.viewport ? viewportController.viewport : angular.element(window);\r\n const container = viewportController && viewportController.container ? viewportController.container : undefined;\r\n const scope = viewportController && viewportController.scope ? viewportController.scope : $rootScope;\r\n\r\n viewport.css({\r\n 'overflow-anchor': 'none',\r\n 'overflow-y': 'auto',\r\n 'display': 'block'\r\n });\r\n\r\n function bufferPadding() {\r\n return viewport.outerHeight() * padding; // some extra space to initiate preload\r\n }\r\n\r\n angular.extend(viewport, {\r\n getScope() {\r\n return scope;\r\n },\r\n\r\n createPaddingElements(template) {\r\n topPadding = new Padding(template,rowHeight);\r\n bottomPadding = new Padding(template,rowHeight);\r\n element.before(topPadding.element);\r\n element.after(bottomPadding.element);\r\n topPadding.height(0);\r\n bottomPadding.height(0);\r\n },\r\n\r\n applyContainerStyle() {\r\n if (!container) {\r\n return true;\r\n }\r\n if(container !== viewport) {\r\n viewport.css('height', window.getComputedStyle(container[0]).height);\r\n }\r\n return viewport.height() > 0;\r\n },\r\n\r\n bottomDataPos() {\r\n let scrollHeight = viewport[0].scrollHeight;\r\n scrollHeight = scrollHeight != null ? scrollHeight : viewport[0].document.documentElement.scrollHeight;\r\n return scrollHeight - bottomPadding.height();\r\n },\r\n\r\n topDataPos() {\r\n return topPadding.height();\r\n },\r\n\r\n bottomVisiblePos() {\r\n return viewport.scrollTop() + viewport.outerHeight();\r\n },\r\n\r\n topVisiblePos() {\r\n return viewport.scrollTop();\r\n },\r\n\r\n insertElement(e, sibling) {\r\n return elementRoutines.insertElement(e, sibling || topPadding.element);\r\n },\r\n\r\n insertElementAnimated(e, sibling) {\r\n return elementRoutines.insertElementAnimated(e, sibling || topPadding.element);\r\n },\r\n\r\n shouldLoadBottom() {\r\n return !buffer.eof && viewport.bottomDataPos() < viewport.bottomVisiblePos() + bufferPadding();\r\n },\r\n\r\n clipBottom() {\r\n // clip the invisible items off the bottom\r\n let overage = 0;\r\n let overageHeight = 0;\r\n let itemHeight = 0;\r\n let emptySpaceHeight = viewport.bottomDataPos() - viewport.bottomVisiblePos() - bufferPadding();\r\n\r\n // Simple calculation now using the fixed rowHeight if available.\r\n // Might be optimized if needed\r\n for (let i = buffer.length - 1; i >= 0; i--) {\r\n itemHeight = rowHeight ? rowHeight : buffer[i].element.outerHeight(true);\r\n if (overageHeight + itemHeight > emptySpaceHeight) {\r\n break;\r\n }\r\n bottomPadding.cache.add(buffer[i]);\r\n overageHeight += itemHeight;\r\n overage++;\r\n }\r\n\r\n if (overage > 0) {\r\n buffer.eof = false;\r\n buffer.remove(buffer.length - overage, buffer.length);\r\n buffer.next -= overage;\r\n viewport.adjustPaddings();\r\n }\r\n },\r\n\r\n shouldLoadTop() {\r\n return !buffer.bof && (viewport.topDataPos() > viewport.topVisiblePos() - bufferPadding());\r\n },\r\n\r\n clipTop() {\r\n // clip the invisible items off the top\r\n let overage = 0;\r\n let overageHeight = 0;\r\n let itemHeight = 0;\r\n let emptySpaceHeight = viewport.topVisiblePos() - viewport.topDataPos() - bufferPadding();\r\n\r\n // Simple calculation now using the fixed rowHeight if available.\r\n // Might be optimized if needed\r\n for (let i = 0; i < buffer.length; i++) {\r\n itemHeight = rowHeight ? rowHeight : buffer[i].element.outerHeight(true);\r\n if (overageHeight + itemHeight > emptySpaceHeight) {\r\n break;\r\n }\r\n topPadding.cache.add(buffer[i]);\r\n overageHeight += itemHeight;\r\n overage++;\r\n }\r\n\r\n if (overage > 0) {\r\n // we need to adjust top padding element before items are removed from top\r\n // to avoid strange behaviour of scroll bar during remove top items when we are at the very bottom\r\n topPadding.height(topPadding.height() + overageHeight);\r\n buffer.bof = false;\r\n buffer.remove(0, overage);\r\n buffer.first += overage;\r\n }\r\n },\r\n\r\n adjustPaddings() {\r\n if (!buffer.length) {\r\n return;\r\n }\r\n\r\n // precise heights calculation based on items that are in buffer or that were in buffer once\r\n // outerHeight(true) == [height+ padding + border + margin]\r\n // The calculation bellow can certainly be replaced by:\r\n // const visibleItemsHeight = rowHeight ? rowHeight * buffer.length\r\n // : buffer.reduce((summ, item) => summ + item.element.outerHeight(true), 0);\r\n const visibleItemsHeight = buffer.reduce((summ, item) => summ + (rowHeight ? rowHeight : item.element.outerHeight(true)), 0);\r\n\r\n // Sinlarly, the calculation of the paddings (top & bottom) can certanly be optimizez\r\n let topPaddingHeight = 0, topCount = 0;\r\n topPadding.cache.forEach(item => {\r\n if(item.index < buffer.first) {\r\n topPaddingHeight += item.height; // outerHeight(true) is actually stored in this data member\r\n topCount++;\r\n }\r\n });\r\n\r\n let bottomPaddingHeight = 0, bottomCount = 0;\r\n bottomPadding.cache.forEach(item => {\r\n if(item.index >= buffer.next) {\r\n bottomPaddingHeight += item.height; // outerHeight(true) is actually stored in this data member\r\n bottomCount++;\r\n }\r\n });\r\n\r\n const totalHeight = visibleItemsHeight + topPaddingHeight + bottomPaddingHeight;\r\n const averageItemHeight = totalHeight / (topCount + bottomCount + buffer.length);\r\n\r\n // average heights calculation, items that have never been reached\r\n let adjustTopPadding = buffer.minIndexUser !== null && buffer.minIndex > buffer.minIndexUser;\r\n let adjustBottomPadding = buffer.maxIndexUser !== null && buffer.maxIndex < buffer.maxIndexUser;\r\n let topPaddingHeightAdd = adjustTopPadding ? (buffer.minIndex - buffer.minIndexUser) * averageItemHeight : 0;\r\n let bottomPaddingHeightAdd = adjustBottomPadding ? (buffer.maxIndexUser - buffer.maxIndex) * averageItemHeight : 0;\r\n\r\n // paddings combine adjustment\r\n topPadding.height(topPaddingHeight + topPaddingHeightAdd);\r\n bottomPadding.height(bottomPaddingHeight + bottomPaddingHeightAdd);\r\n },\r\n\r\n onAfterMinIndexSet(topPaddingHeightOld) {\r\n // additional scrollTop adjustment in case of datasource.minIndex external set\r\n if (buffer.minIndexUser !== null && buffer.minIndex > buffer.minIndexUser) {\r\n let diff = topPadding.height() - topPaddingHeightOld;\r\n viewport.scrollTop(viewport.scrollTop() + diff);\r\n while((diff -= viewport.scrollTop()) > 0) {\r\n bottomPadding.height(bottomPadding.height() + diff);\r\n viewport.scrollTop(viewport.scrollTop() + diff);\r\n }\r\n }\r\n },\r\n\r\n onAfterPrepend(updates) {\r\n if (!updates.prepended.length)\r\n return;\r\n const height = buffer.effectiveHeight(updates.prepended);\r\n const paddingHeight = topPadding.height() - height;\r\n if (paddingHeight >= 0) {\r\n topPadding.height(paddingHeight);\r\n }\r\n else {\r\n topPadding.height(0);\r\n viewport.scrollTop(viewport.scrollTop() - paddingHeight);\r\n }\r\n },\r\n\r\n resetTopPadding() {\r\n topPadding.height(0);\r\n topPadding.cache.clear();\r\n },\r\n\r\n resetBottomPadding() {\r\n bottomPadding.height(0);\r\n bottomPadding.cache.clear();\r\n },\r\n\r\n removeCacheItem(item, isTop) {\r\n topPadding.cache.remove(item, isTop);\r\n bottomPadding.cache.remove(item, isTop);\r\n },\r\n\r\n removeItem(item) {\r\n this.removeCacheItem(item);\r\n return buffer.remove(item);\r\n }\r\n });\r\n\r\n return viewport;\r\n}\r\n","class Adapter {\r\n\r\n constructor($scope, $parse, $attr, viewport, buffer, doAdjust, reload) {\r\n this.$parse = $parse;\r\n this.$attr = $attr;\r\n this.viewport = viewport;\r\n this.buffer = buffer;\r\n\r\n this.doAdjust = doAdjust;\r\n this.reload = reload;\r\n\r\n this.isLoading = false;\r\n this.disabled = false;\r\n\r\n const viewportScope = viewport.getScope();\r\n this.startScope = viewportScope.$parent ? viewportScope : $scope;\r\n\r\n this.publicContext = {};\r\n this.assignAdapter($attr.adapter);\r\n this.generatePublicContext();\r\n }\r\n\r\n assignAdapter(adapterAttr) {\r\n if (!adapterAttr || !(adapterAttr = adapterAttr.replace(/^\\s+|\\s+$/gm, ''))) {\r\n return;\r\n }\r\n let adapterOnScope;\r\n\r\n try {\r\n this.$parse(adapterAttr).assign(this.startScope, {});\r\n adapterOnScope = this.$parse(adapterAttr)(this.startScope);\r\n }\r\n catch (error) {\r\n error.message = `Angular ui-scroll Adapter assignment exception.\\n` +\r\n `Can't parse \"${adapterAttr}\" expression.\\n` +\r\n error.message;\r\n throw error;\r\n }\r\n\r\n angular.extend(adapterOnScope, this.publicContext);\r\n this.publicContext = adapterOnScope;\r\n }\r\n\r\n generatePublicContext() {\r\n // these methods will be accessible out of ui-scroll via user defined adapter\r\n const publicMethods = ['reload', 'applyUpdates', 'append', 'prepend', 'isBOF', 'isEOF', 'isEmpty'];\r\n for (let i = publicMethods.length - 1; i >= 0; i--) {\r\n this.publicContext[publicMethods[i]] = this[publicMethods[i]].bind(this);\r\n }\r\n\r\n // these read-only props will be accessible out of ui-scroll via user defined adapter\r\n const publicProps = ['isLoading', 'topVisible', 'topVisibleElement', 'topVisibleScope', 'bottomVisible', 'bottomVisibleElement', 'bottomVisibleScope'];\r\n for (let i = publicProps.length - 1; i >= 0; i--) {\r\n let property, attr = this.$attr[publicProps[i]];\r\n Object.defineProperty(this, publicProps[i], {\r\n get: () => property,\r\n set: (value) => {\r\n property = value;\r\n this.publicContext[publicProps[i]] = value;\r\n if (attr) {\r\n this.$parse(attr).assign(this.startScope, value);\r\n }\r\n }\r\n });\r\n }\r\n\r\n // non-read-only public property\r\n Object.defineProperty(this.publicContext, 'disabled', {\r\n get: () => this.disabled,\r\n set: (value) => (!(this.disabled = value)) ? this.doAdjust() : null\r\n });\r\n }\r\n\r\n loading(value) {\r\n this.isLoading = value;\r\n }\r\n\r\n isBOF() {\r\n return this.buffer.bof;\r\n }\r\n\r\n isEOF() {\r\n return this.buffer.eof;\r\n }\r\n\r\n isEmpty() {\r\n return !this.buffer.length;\r\n }\r\n\r\n append(newItems) {\r\n this.buffer.append(newItems);\r\n this.doAdjust();\r\n this.viewport.clipTop();\r\n this.viewport.clipBottom();\r\n }\r\n\r\n prepend(newItems) {\r\n this.buffer.prepend(newItems);\r\n this.doAdjust();\r\n this.viewport.clipTop();\r\n this.viewport.clipBottom();\r\n }\r\n\r\n applyUpdates(arg1, arg2) {\r\n if (typeof arg1 === 'function') {\r\n this.applyUpdatesFunc(arg1);\r\n } else {\r\n this.applyUpdatesIndex(arg1, arg2);\r\n }\r\n this.doAdjust();\r\n }\r\n\r\n applyUpdatesFunc(cb) {\r\n this.buffer.slice(0).forEach((wrapper) => {\r\n // we need to do it on the buffer clone, because buffer content\r\n // may change as we iterate through\r\n this.applyUpdate(wrapper, cb(wrapper.item, wrapper.scope, wrapper.element));\r\n });\r\n }\r\n\r\n applyUpdatesIndex(index, newItems) {\r\n if (index % 1 !== 0) {\r\n throw new Error('applyUpdates - ' + index + ' is not a valid index (should be an integer)');\r\n }\r\n const _index = index - this.buffer.first;\r\n\r\n // apply updates only within buffer\r\n if (_index >= 0 && _index < this.buffer.length) {\r\n this.applyUpdate(this.buffer[_index], newItems);\r\n }\r\n // out-of-buffer case: deletion may affect Paddings\r\n else if(index >= this.buffer.getAbsMinIndex() && index <= this.buffer.getAbsMaxIndex()) {\r\n if(angular.isArray(newItems) && !newItems.length) {\r\n this.viewport.removeCacheItem(index, index === this.buffer.minIndex);\r\n if(index === this.buffer.getAbsMinIndex()) {\r\n this.buffer.incrementMinIndex();\r\n }\r\n else {\r\n this.buffer.decrementMaxIndex();\r\n }\r\n }\r\n }\r\n }\r\n\r\n applyUpdate(wrapper, newItems) {\r\n if (!angular.isArray(newItems)) {\r\n return;\r\n }\r\n let position = this.buffer.indexOf(wrapper);\r\n if (!newItems.reverse().some(newItem => newItem === wrapper.item)) {\r\n wrapper.op = 'remove';\r\n if(position === 0 && !newItems.length) {\r\n wrapper._op = 'isTop'; // to catch \"first\" edge case on remove\r\n }\r\n }\r\n newItems.forEach((newItem) => {\r\n if (newItem === wrapper.item) {\r\n position--;\r\n } else {\r\n // 3 parameter (isTop) is to catch \"first\" edge case on insert\r\n this.buffer.insert(position + 1, newItem, position === -1);\r\n }\r\n });\r\n }\r\n\r\n calculateProperties() {\r\n let rowTop = null, topHeight = 0;\r\n let topDone = false, bottomDone = false;\r\n const length = this.buffer.length;\r\n\r\n for (let i = 0; i < length; i++) {\r\n const item = this.buffer[i];\r\n const itemTop = item.element.offset().top;\r\n\r\n if (rowTop !== itemTop) { // a new row condition\r\n const itemHeight = item.element.outerHeight(true);\r\n const top = this.viewport.topDataPos() + topHeight + itemHeight;\r\n\r\n if (!topDone && top > this.viewport.topVisiblePos()) {\r\n topDone = true;\r\n this['topVisible'] = item.item;\r\n this['topVisibleElement'] = item.element;\r\n this['topVisibleScope'] = item.scope;\r\n }\r\n if (!bottomDone && (top >= this.viewport.bottomVisiblePos() || (i === length - 1 && this.isEOF()))) {\r\n bottomDone = true;\r\n this['bottomVisible'] = item.item;\r\n this['bottomVisibleElement'] = item.element;\r\n this['bottomVisibleScope'] = item.scope;\r\n }\r\n topHeight += itemHeight;\r\n }\r\n rowTop = itemTop;\r\n\r\n if (topDone && bottomDone) {\r\n break;\r\n }\r\n }\r\n }\r\n\r\n}\r\n\r\nexport default Adapter;\r\n","import JQLiteExtras from './modules/jqLiteExtras';\nimport ElementRoutines from './modules/elementRoutines.js';\nimport ScrollBuffer from './modules/buffer.js';\nimport Viewport from './modules/viewport.js';\nimport Adapter from './modules/adapter.js';\n\nangular.module('ui.scroll', [])\n\n .constant('JQLiteExtras', JQLiteExtras)\n .run(['JQLiteExtras', (JQLiteExtras) => {\n !window.jQuery ? (new JQLiteExtras()).registerFor(angular.element) : null;\n ElementRoutines.addCSSRules();\n }])\n\n .directive('uiScrollViewport', function () {\n return {\n restrict: 'A',\n controller: [\n '$scope',\n '$element',\n function (scope, element) {\n this.container = element;\n this.viewport = element;\n this.scope = scope;\n\n angular.forEach(element.children(), child => {\n if (child.tagName.toLowerCase() === 'tbody') {\n this.viewport = angular.element(child);\n }\n });\n\n return this;\n }\n ]\n };\n })\n\n .directive('uiScroll', [\n '$log',\n '$injector',\n '$rootScope',\n '$timeout',\n '$interval',\n '$q',\n '$parse',\n function (console, $injector, $rootScope, $timeout, $interval, $q, $parse) {\n\n return {\n require: ['?^uiScrollViewport'],\n restrict: 'A',\n transclude: 'element',\n priority: 1000,\n terminal: true,\n link: link\n };\n\n function link($scope, element, $attr, controllers, linker) {\n const match = $attr.uiScroll.match(/^\\s*(\\w+)\\s+in\\s+([(\\w|\\$)\\.]+)\\s*$/);\n if (!match) {\n throw new Error('Expected uiScroll in form of \\'_item_ in _datasource_\\' but got \\'' + $attr.uiScroll + '\\'');\n }\n\n function parseNumber(value, defaultValue, isFloat) {\n if (!isFloat) {\n value = value === null ? defaultValue : Math.floor(value);\n }\n return isNaN(value) ? defaultValue : value;\n }\n\n function parseNumericAttr(value, defaultValue, isFloat) {\n const result = $parse(value)($scope);\n return parseNumber(result, defaultValue, isFloat);\n }\n\n const BUFFER_MIN = 3; // Minimum size of the data source request\n const BUFFER_DEFAULT = 10; // Default datasource request size\n const PADDING_MIN = 0.3; // Mininum # of rows in the padding area\n const PADDING_DEFAULT = 0.5; // Default # of rows in the padding area\n const START_INDEX_DEFAULT = 1; // Default start index when requestng the first data block\n const MAX_VIEWPORT_DELAY = 500; // Max time wait (ms) to get the viewport with an height>0\n const VIEWPORT_POLLING_INTERVAL = 50; // Interval used to check the initial viewport height\n\n let datasource = null;\n const itemName = match[1]; // Name of the index variable to publish\n const datasourceName = match[2]; // Name of the datasource to request the rows from\n const viewportController = controllers[0]; // ViewportController, as specified in the require option (http://websystique.com/angularjs/angularjs-custom-directives-controllers-require-option-guide/)\n const bufferSize = Math.max(BUFFER_MIN, parseNumericAttr($attr.bufferSize, BUFFER_DEFAULT)); \n const padding = Math.max(PADDING_MIN, parseNumericAttr($attr.padding, PADDING_DEFAULT, true));\n let startIndex = parseNumericAttr($attr.startIndex, START_INDEX_DEFAULT);\n\n // PHIL: Provide a fixed row height\n // \n const rowHeight = parseNumericAttr($attr.rowheight,null,false);\n\n // Revision IDs\n // \n let ridActual = 0; // current data revision id\n let pending = [];\n\n const elementRoutines = new ElementRoutines($injector, $q);\n const buffer = new ScrollBuffer(elementRoutines, bufferSize, startIndex);\n const viewport = new Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding, rowHeight);\n const adapter = new Adapter($scope, $parse, $attr, viewport, buffer, doAdjust, reload);\n\n if (viewportController) {\n viewportController.adapter = adapter;\n }\n\n const isDatasourceValid = () =>\n Object.prototype.toString.call(datasource) === '[object Object]' && typeof datasource.get === 'function';\n\n datasource = $parse(datasourceName)($scope); // try to get datasource on scope\n if (!isDatasourceValid()) {\n datasource = $injector.get(datasourceName); // try to inject datasource as service\n if (!isDatasourceValid()) {\n throw new Error(datasourceName + ' is not a valid datasource');\n }\n }\n\n let onRenderHandlers = [];\n function onRenderHandlersRunner() {\n onRenderHandlers.forEach(handler => handler.run());\n onRenderHandlers = [];\n }\n function persistDatasourceIndex(datasource, propName) {\n let getter;\n // need to postpone min/maxIndexUser processing if the view is empty\n if(angular.isNumber(datasource[propName])) {\n getter = datasource[propName];\n if(angular.isNumber(getter)) {\n onRenderHandlers = onRenderHandlers.filter(handler => handler.id !== propName);\n onRenderHandlers.push({\n id: propName,\n run: () => datasource[propName] = getter\n });\n }\n }\n }\n\n function defineDatasourceIndex(datasource, propName, propUserName) {\n const descriptor = Object.getOwnPropertyDescriptor(datasource, propName);\n if (descriptor && (descriptor.set || descriptor.get)) {\n return;\n }\n let getter;\n persistDatasourceIndex(datasource, propName);\n Object.defineProperty(datasource, propName, {\n set: (value) => {\n getter = value;\n if(pending.length && !buffer.length) {\n persistDatasourceIndex(datasource, propName);\n return;\n }\n buffer[propUserName] = value;\n const topPaddingHeightOld = viewport.topDataPos();\n viewport.adjustPaddings();\n if (propName === 'minIndex') {\n viewport.onAfterMinIndexSet(topPaddingHeightOld);\n }\n },\n get: () => getter\n });\n }\n\n defineDatasourceIndex(datasource, 'minIndex', 'minIndexUser');\n defineDatasourceIndex(datasource, 'maxIndex', 'maxIndexUser');\n\n const fetchNext = (datasource.get.length !== 2) ?\n (success) => datasource.get(buffer.next, bufferSize, success) :\n (success) => {\n datasource.get({\n index: buffer.next,\n append: buffer.length ? buffer[buffer.length - 1].item : void 0,\n count: bufferSize\n }, success);\n };\n\n const fetchPrevious = (datasource.get.length !== 2) ?\n (success) => datasource.get(buffer.first - bufferSize, bufferSize, success) :\n (success) => {\n datasource.get({\n index: buffer.first - bufferSize,\n prepend: buffer.length ? buffer[0].item : void 0,\n count: bufferSize\n }, success);\n };\n\n const initialize = () => {\n let tryCount = 0;\n if(!viewport.applyContainerStyle()) {\n const timer = $interval(() => {\n tryCount++;\n if(viewport.applyContainerStyle()) {\n $interval.cancel(timer);\n doAdjust();\n }\n if(tryCount * VIEWPORT_POLLING_INTERVAL >= MAX_VIEWPORT_DELAY) {\n $interval.cancel(timer);\n throw Error(`ui-scroll directive requires a viewport with non-zero height in ${MAX_VIEWPORT_DELAY}ms`);\n }\n }, VIEWPORT_POLLING_INTERVAL);\n }\n else {\n doAdjust();\n }\n };\n\n /**\n * Build padding elements\n *\n * Calling linker is the only way I found to get access to the tag name of the template\n * to prevent the directive scope from pollution a new scope is created and destroyed\n * right after the builder creation is completed\n */\n linker((clone, scope) => {\n viewport.createPaddingElements(clone[0]);\n // we do not include the clone in the DOM. It means that the nested directives will not\n // be able to reach the parent directives, but in this case it is intentional because we\n // created the clone to access the template tag name\n scope.$destroy();\n clone.remove();\n });\n\n $scope.$on('$destroy', () => {\n unbindEvents();\n viewport.unbind('mousewheel', wheelHandler);\n });\n\n viewport.bind('mousewheel', wheelHandler);\n\n initialize();\n\n /* Private function definitions */\n\n function isInvalid(rid) {\n return (rid && rid !== ridActual) || $scope.$$destroyed;\n }\n\n function bindEvents() {\n viewport.bind('resize', resizeAndScrollHandler);\n viewport.bind('scroll', resizeAndScrollHandler);\n }\n\n function unbindEvents() {\n viewport.unbind('resize', resizeAndScrollHandler);\n viewport.unbind('scroll', resizeAndScrollHandler);\n }\n\n function reload() {\n viewport.resetTopPadding();\n viewport.resetBottomPadding();\n if (arguments.length) {\n startIndex = parseNumber(arguments[0], START_INDEX_DEFAULT, false);\n }\n buffer.reset(startIndex);\n persistDatasourceIndex(datasource, 'minIndex');\n persistDatasourceIndex(datasource, 'maxIndex');\n doAdjust();\n }\n\n function isElementVisible(wrapper) {\n if(rowHeight) {\n return true;\n }\n return wrapper.element.height() && wrapper.element[0].offsetParent;\n }\n\n function visibilityWatcher(wrapper) {\n if (isElementVisible(wrapper)) {\n buffer.forEach((item) => {\n if (typeof item.unregisterVisibilityWatcher === 'function') {\n item.unregisterVisibilityWatcher();\n delete item.unregisterVisibilityWatcher;\n }\n });\n if (!pending.length) {\n $timeout(() => doAdjust());\n }\n }\n }\n\n function insertWrapperContent(wrapper, insertAfter) {\n createElement(wrapper, insertAfter, viewport.insertElement);\n if (!isElementVisible(wrapper)) {\n wrapper.unregisterVisibilityWatcher = wrapper.scope.$watch(() => visibilityWatcher(wrapper));\n }\n elementRoutines.hideElement(wrapper); // hide inserted elements before data binding\n }\n\n function createElement(wrapper, insertAfter, insertElement) {\n let promises = null;\n const sibling = (insertAfter > 0) ? buffer[insertAfter - 1].element : undefined;\n linker((clone, scope) => {\n promises = insertElement(clone, sibling);\n wrapper.element = clone;\n wrapper.scope = scope;\n scope[itemName] = wrapper.item;\n });\n // ui-scroll-grid apply\n if (adapter.transform) {\n const tdInitializer = wrapper.scope.uiScrollTdInitializer;\n if (tdInitializer && tdInitializer.linking) {\n adapter.transform(wrapper.scope, wrapper.element);\n } else {\n wrapper.scope.uiScrollTdInitializer = {\n onLink: () => adapter.transform(wrapper.scope, wrapper.element),\n scope: wrapper.scope\n };\n }\n }\n return promises;\n }\n\n function updateDOM() {\n let promises = [];\n const toBePrepended = [];\n const toBeRemoved = [];\n const inserted = [];\n\n buffer.forEach((wrapper, i) => {\n switch (wrapper.op) {\n case 'prepend':\n toBePrepended.unshift(wrapper);\n break;\n case 'append':\n insertWrapperContent(wrapper, i);\n wrapper.op = 'none';\n inserted.push(wrapper);\n break;\n case 'insert':\n promises = promises.concat(createElement(wrapper, i, viewport.insertElementAnimated));\n wrapper.op = 'none';\n inserted.push(wrapper);\n break;\n case 'remove':\n toBeRemoved.push(wrapper);\n }\n });\n\n toBeRemoved.forEach((wrapper) => promises = promises.concat(viewport.removeItem(wrapper)));\n\n if (toBePrepended.length)\n toBePrepended.forEach((wrapper) => {\n insertWrapperContent(wrapper);\n wrapper.op = 'none';\n });\n\n buffer.forEach((item, i) => item.scope.$index = buffer.first + i);\n\n return {\n prepended: toBePrepended,\n removed: toBeRemoved,\n inserted: inserted,\n animated: promises\n };\n\n }\n\n // Adjust the viewport paddings\n // \n function updatePaddings(rid, updates) {\n // schedule another doAdjust after animation completion\n if (updates.animated.length) {\n $q.all(updates.animated).then(() => {\n viewport.adjustPaddings();\n doAdjust(rid);\n });\n } else {\n viewport.adjustPaddings();\n }\n }\n\n function enqueueFetch(rid, updates) {\n if (viewport.shouldLoadBottom()) {\n if (!updates || buffer.effectiveHeight(updates.inserted) > 0) {\n // this means that at least one item appended in the last batch has height > 0\n if (pending.push(true) === 1) {\n adapter.loading(true);\n fetch(rid);\n }\n }\n } else if (viewport.shouldLoadTop()) {\n if ((!updates || buffer.effectiveHeight(updates.prepended) > 0) || pending[0]) {\n // this means that at least one item appended in the last batch has height > 0\n // pending[0] = true means that previous fetch was appending. We need to force at least one prepend\n // BTW there will always be at least 1 element in the pending array because bottom is fetched first\n if (pending.push(false) === 1) {\n adapter.loading(true);\n fetch(rid);\n }\n }\n }\n }\n\n function processUpdates() {\n const updates = updateDOM();\n\n // We need the item bindings to be processed before we can do adjustments\n if(!rowHeight) {\n !$scope.$$phase && !$rootScope.$$phase && $scope.$digest();\n }\n \n updates.inserted.forEach(w => elementRoutines.showElement(w));\n updates.prepended.forEach(w => elementRoutines.showElement(w));\n return updates;\n }\n\n function doAdjust(rid) {\n if (!rid) { // dismiss pending requests\n pending = [];\n rid = ++ridActual;\n }\n\n const updates = processUpdates();\n\n if (isInvalid(rid)) {\n return;\n }\n\n updatePaddings(rid, updates);\n enqueueFetch(rid);\n\n if (!pending.length) {\n adapter.calculateProperties();\n }\n }\n\n function doAdjustAfterFetch(rid) {\n const updates = processUpdates();\n\n viewport.onAfterPrepend(updates);\n\n if (isInvalid(rid)) {\n return;\n }\n\n updatePaddings(rid, updates);\n onRenderHandlersRunner();\n enqueueFetch(rid, updates);\n pending.shift();\n\n if (pending.length)\n fetch(rid);\n else {\n adapter.loading(false);\n bindEvents();\n adapter.calculateProperties();\n }\n }\n\n function fetch(rid) {\n if (pending[0]) {// scrolling down\n if (buffer.length && !viewport.shouldLoadBottom()) {\n doAdjustAfterFetch(rid);\n } else {\n fetchNext((result) => {\n if (isInvalid(rid)) {\n return;\n }\n\n if (result.length < bufferSize) {\n buffer.eof = true;\n }\n\n if (result.length > 0) {\n viewport.clipTop();\n buffer.append(result);\n }\n\n doAdjustAfterFetch(rid);\n });\n }\n } else { // scrolling up\n if (buffer.length && !viewport.shouldLoadTop()) {\n doAdjustAfterFetch(rid);\n } else {\n fetchPrevious((result) => {\n if (isInvalid(rid)) {\n return;\n }\n\n if (result.length < bufferSize) {\n buffer.bof = true;\n // log 'bof is reached'\n }\n\n if (result.length > 0) {\n if (buffer.length) {\n viewport.clipBottom();\n }\n buffer.prepend(result);\n }\n\n doAdjustAfterFetch(rid);\n });\n }\n }\n }\n\n function resizeAndScrollHandler() {\n if (!$rootScope.$$phase && !adapter.isLoading && !adapter.disabled) {\n\n enqueueFetch(ridActual);\n\n if (pending.length) {\n unbindEvents();\n } else {\n adapter.calculateProperties();\n if(!rowHeight) {\n // The digest is forced to calculate the height, which is not necessary when the height is knowm\n !$scope.$$phase && $scope.$digest();\n }\n }\n }\n }\n\n function wheelHandler(event) {\n if (!adapter.disabled) {\n const scrollTop = viewport[0].scrollTop;\n const yMax = viewport[0].scrollHeight - viewport[0].clientHeight;\n\n if ((scrollTop === 0 && !buffer.bof) || (scrollTop === yMax && !buffer.eof)) {\n event.preventDefault();\n }\n }\n }\n }\n\n }\n ]);\n"],"sourceRoot":""} \ No newline at end of file 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missing methods\r\n return angular.forEach({\r\n before(newElem) {\r\n var children, elem, i, j, parent, ref, self;\r\n self = this;\r\n elem = self[0];\r\n parent = self.parent();\r\n children = parent.contents();\r\n if (children[0] === elem) {\r\n return parent.prepend(newElem);\r\n } else {\r\n for (i = j = 1, ref = children.length - 1; 1 <= ref ? j <= ref : j >= ref; i = 1 <= ref ? ++j : --j) {\r\n if (children[i] === elem) {\r\n angular.element(children[i - 1]).after(newElem);\r\n return;\r\n }\r\n }\r\n throw new Error('invalid DOM structure ' + elem.outerHTML);\r\n }\r\n },\r\n height (value){\r\n var self;\r\n self = this;\r\n if (typeof value !== 'undefined') {\r\n if (angular.isNumber(value)) {\r\n value = value + 'px';\r\n }\r\n return css.call(self, 'height', value);\r\n } else {\r\n return getWidthHeight(this[0], 'height', 'base');\r\n }\r\n },\r\n outerHeight(option) {\r\n return getWidthHeight(this[0], 'height', option ? 'outerfull' : 'outer');\r\n },\r\n outerWidth(option) {\r\n return getWidthHeight(this[0], 'width', option ? 'outerfull' : 'outer');\r\n },\r\n\r\n /*\r\n The offset setter method is not implemented\r\n */\r\n offset(value) {\r\n let docElem, win;\r\n let self = this;\r\n let box = {\r\n top: 0,\r\n left: 0\r\n };\r\n let elem = self[0];\r\n let doc = elem && elem.ownerDocument;\r\n\r\n if (arguments.length) {\r\n if (value === undefined) {\r\n return self;\r\n }\r\n // TODO: implement setter\r\n throw new Error('offset setter method is not implemented');\r\n }\r\n\r\n if (!doc) {\r\n return;\r\n }\r\n\r\n docElem = doc.documentElement;\r\n\r\n // TODO: Make sure it's not a disconnected DOM node\r\n\r\n if (elem.getBoundingClientRect != null) {\r\n box = elem.getBoundingClientRect();\r\n }\r\n\r\n win = doc.defaultView || doc.parentWindow;\r\n\r\n return {\r\n top: box.top + (win.pageYOffset || docElem.scrollTop) - (docElem.clientTop || 0),\r\n left: box.left + (win.pageXOffset || docElem.scrollLeft) - (docElem.clientLeft || 0)\r\n };\r\n },\r\n scrollTop(value) {\r\n return scrollTo(this, 'top', value);\r\n },\r\n scrollLeft(value) {\r\n return scrollTo(this, 'left', value);\r\n }\r\n }, (value, key) => {\r\n if (!element.prototype[key]) {\r\n return element.prototype[key] = value;\r\n }\r\n });\r\n }\r\n\r\n}\r\n","const hideClassToken = 'ng-ui-scroll-hide';\r\n\r\nexport default class ElementRoutines {\r\n\r\n static addCSSRules() {\r\n const selector = '.' + hideClassToken;\r\n const rules = 'display: none';\r\n const sheet = document.styleSheets[0];\r\n let index;\r\n try {\r\n index = sheet.cssRules.length;\r\n } catch (err) {\r\n index = 0;\r\n }\r\n if('insertRule' in sheet) {\r\n sheet.insertRule(selector + '{' + rules + '}', index);\r\n }\r\n else if('addRule' in sheet) {\r\n sheet.addRule(selector, rules, index);\r\n }\r\n }\r\n\r\n constructor($injector, $q) {\r\n this.$animate = ($injector.has && $injector.has('$animate')) ? $injector.get('$animate') : null;\r\n this.isAngularVersionLessThen1_3 = angular.version.major === 1 && angular.version.minor < 3;\r\n this.$q = $q;\r\n }\r\n\r\n hideElement(wrapper) {\r\n wrapper.element.addClass(hideClassToken);\r\n }\r\n\r\n showElement(wrapper) {\r\n wrapper.element.removeClass(hideClassToken);\r\n }\r\n\r\n insertElement(newElement, previousElement) {\r\n previousElement.after(newElement);\r\n return [];\r\n }\r\n\r\n removeElement(wrapper) {\r\n wrapper.element.remove();\r\n wrapper.scope.$destroy();\r\n return [];\r\n }\r\n\r\n insertElementAnimated(newElement, previousElement) {\r\n if (!this.$animate) {\r\n return this.insertElement(newElement, previousElement);\r\n }\r\n\r\n if (this.isAngularVersionLessThen1_3) {\r\n const deferred = this.$q.defer();\r\n // no need for parent - previous element is never null\r\n this.$animate.enter(newElement, null, previousElement, () => deferred.resolve());\r\n\r\n return [deferred.promise];\r\n }\r\n\r\n // no need for parent - previous element is never null\r\n return [this.$animate.enter(newElement, null, previousElement)];\r\n }\r\n\r\n removeElementAnimated(wrapper) {\r\n if (!this.$animate) {\r\n return this.removeElement(wrapper);\r\n }\r\n\r\n if (this.isAngularVersionLessThen1_3) {\r\n const deferred = this.$q.defer();\r\n this.$animate.leave(wrapper.element, () => {\r\n wrapper.scope.$destroy();\r\n return deferred.resolve();\r\n });\r\n\r\n return [deferred.promise];\r\n }\r\n\r\n return [(this.$animate.leave(wrapper.element)).then(() => wrapper.scope.$destroy())];\r\n }\r\n}","export default function ScrollBuffer(elementRoutines, bufferSize, startIndex) {\r\n const buffer = Object.create(Array.prototype);\r\n\r\n angular.extend(buffer, {\r\n size: bufferSize,\r\n\r\n reset(startIndex) {\r\n buffer.remove(0, buffer.length);\r\n buffer.eof = false;\r\n buffer.bof = false;\r\n buffer.first = startIndex;\r\n buffer.next = startIndex;\r\n buffer.minIndex = startIndex;\r\n buffer.maxIndex = startIndex;\r\n buffer.minIndexUser = null;\r\n buffer.maxIndexUser = null;\r\n },\r\n\r\n append(items) {\r\n items.forEach((item) => {\r\n ++buffer.next;\r\n buffer.insert('append', item);\r\n });\r\n buffer.maxIndex = buffer.eof ? buffer.next - 1 : Math.max(buffer.next - 1, buffer.maxIndex);\r\n },\r\n\r\n prepend(items) {\r\n items.reverse().forEach((item) => {\r\n --buffer.first;\r\n buffer.insert('prepend', item);\r\n });\r\n buffer.minIndex = buffer.bof ? buffer.minIndex = buffer.first : Math.min(buffer.first, buffer.minIndex);\r\n },\r\n\r\n /**\r\n * inserts wrapped element in the buffer\r\n * the first argument is either operation keyword (see below) or a number for operation 'insert'\r\n * for insert the number is the index for the buffer element the new one have to be inserted after\r\n * operations: 'append', 'prepend', 'insert', 'remove', 'update', 'none'\r\n */\r\n insert(operation, item, isTop) {\r\n const wrapper = {\r\n item: item\r\n };\r\n\r\n if (operation % 1 === 0) {// it is an insert\r\n wrapper.op = 'insert';\r\n buffer.splice(operation, 0, wrapper);\r\n if(isTop) {\r\n buffer.first--;\r\n }\r\n else {\r\n buffer.next++;\r\n }\r\n } else {\r\n wrapper.op = operation;\r\n switch (operation) {\r\n case 'append':\r\n buffer.push(wrapper);\r\n break;\r\n case 'prepend':\r\n buffer.unshift(wrapper);\r\n break;\r\n }\r\n }\r\n },\r\n\r\n // removes elements from buffer\r\n remove(arg1, arg2) {\r\n if (angular.isNumber(arg1)) {\r\n // removes items from arg1 (including) through arg2 (excluding)\r\n for (let i = arg1; i < arg2; i++) {\r\n elementRoutines.removeElement(buffer[i]);\r\n }\r\n return buffer.splice(arg1, arg2 - arg1);\r\n }\r\n // removes single item(wrapper) from the buffer\r\n buffer.splice(buffer.indexOf(arg1), 1);\r\n if(arg1._op === 'isTop' && buffer.first === this.getAbsMinIndex()) {\r\n this.incrementMinIndex();\r\n }\r\n else {\r\n this.decrementMaxIndex();\r\n }\r\n if(arg1._op === 'isTop') {\r\n buffer.first++;\r\n }\r\n else {\r\n buffer.next--;\r\n }\r\n if(!buffer.length) {\r\n buffer.first = 1;\r\n buffer.next = 1;\r\n }\r\n\r\n return elementRoutines.removeElementAnimated(arg1);\r\n },\r\n\r\n incrementMinIndex() {\r\n if(buffer.minIndexUser !== null) {\r\n if(buffer.minIndex > buffer.minIndexUser) {\r\n buffer.minIndexUser++;\r\n return;\r\n }\r\n if(buffer.minIndex === buffer.minIndexUser) {\r\n buffer.minIndexUser++;\r\n }\r\n }\r\n buffer.minIndex++;\r\n },\r\n\r\n decrementMaxIndex() {\r\n if(buffer.maxIndexUser !== null && buffer.maxIndex <= buffer.maxIndexUser) {\r\n buffer.maxIndexUser--;\r\n }\r\n buffer.maxIndex--;\r\n },\r\n\r\n getAbsMinIndex() {\r\n if(buffer.minIndexUser !== null) {\r\n return Math.min(buffer.minIndexUser, buffer.minIndex);\r\n }\r\n return buffer.minIndex;\r\n },\r\n\r\n getAbsMaxIndex() {\r\n if(buffer.maxIndexUser !== null) {\r\n return Math.max(buffer.maxIndexUser, buffer.maxIndex);\r\n }\r\n return buffer.maxIndex;\r\n },\r\n\r\n effectiveHeight(elements) {\r\n if (!elements.length) {\r\n return 0;\r\n }\r\n let top = Number.MAX_VALUE;\r\n let bottom = Number.NEGATIVE_INFINITY;\r\n elements.forEach((wrapper) => {\r\n if (wrapper.element[0].offsetParent) {\r\n // element style is not display:none\r\n top = Math.min(top, wrapper.element.offset().top);\r\n bottom = Math.max(bottom, wrapper.element.offset().top + wrapper.element.outerHeight(true));\r\n }\r\n });\r\n return Math.max(0, bottom - top);\r\n }\r\n\r\n });\r\n\r\n buffer.reset(startIndex);\r\n\r\n return buffer;\r\n}\r\n","// Can't just extend the Array, due to Babel does not support built-in classes extending\r\n// This solution was taken from https://stackoverflow.com/questions/46897414/es6-class-extends-array-workaround-for-es5-babel-transpile\r\nclass CacheProto {\r\n add(item) {\r\n for (let i = this.length - 1; i >= 0; i--) {\r\n if (this[i].index === item.scope.$index) {\r\n this[i].height = this.rowHeight || item.element.outerHeight();\r\n return;\r\n }\r\n }\r\n this.push({\r\n index: item.scope.$index,\r\n height: this.rowHeight || item.element.outerHeight()\r\n });\r\n this.sort((a, b) => ((a.index < b.index) ? -1 : ((a.index > b.index) ? 1 : 0)));\r\n }\r\n\r\n remove(argument, _isTop) {\r\n const index = argument % 1 === 0 ? argument : argument.scope.$index;\r\n const isTop = argument % 1 === 0 ? _isTop : argument._op === 'isTop';\r\n for (let i = this.length - 1; i >= 0; i--) {\r\n if (this[i].index === index) {\r\n this.splice(i, 1);\r\n break;\r\n }\r\n }\r\n if(!isTop) {\r\n for (let i = this.length - 1; i >= 0; i--) {\r\n if (this[i].index > index) {\r\n this[i].index--;\r\n }\r\n }\r\n }\r\n }\r\n\r\n clear() {\r\n this.length = 0;\r\n }\r\n}\r\n\r\nfunction Cache() {\r\n const instance = [];\r\n instance.push.apply(instance, arguments);\r\n Object.setPrototypeOf(instance, Cache.prototype);\r\n return instance;\r\n}\r\nCache.prototype = Object.create(Array.prototype);\r\nObject.getOwnPropertyNames(CacheProto.prototype).forEach(methodName =>\r\n Cache.prototype[methodName] = CacheProto.prototype[methodName]\r\n);\r\n\r\nfunction generateElement(template) {\r\n if(template.nodeType !== Node.ELEMENT_NODE) {\r\n throw new Error('ui-scroll directive requires an Element node for templating the view');\r\n }\r\n let element;\r\n switch (template.tagName.toLowerCase()) {\r\n case 'dl':\r\n throw new Error(`ui-scroll directive does not support <${template.tagName}> as a repeating tag: ${template.outerHTML}`);\r\n case 'tr':\r\n let table = angular.element('
    ');\r\n element = table.find('tr');\r\n break;\r\n case 'li':\r\n element = angular.element('
  • ');\r\n break;\r\n default:\r\n element = angular.element('
    ');\r\n }\r\n return element;\r\n}\r\n\r\nclass Padding {\r\n constructor(template,rowHeight) {\r\n this.element = generateElement(template);\r\n this.cache = new Cache();\r\n this.cache.rowHeight = rowHeight;\r\n }\r\n\r\n height() {\r\n // When called wit a parameter, this sets the height of the padding\r\n return this.element.height.apply(this.element, arguments);\r\n }\r\n}\r\n\r\nexport default Padding;","import Padding from './padding';\r\n\r\nexport default function Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding, rowHeight) {\r\n let topPadding = null;\r\n let bottomPadding = null;\r\n const viewport = viewportController && viewportController.viewport ? viewportController.viewport : angular.element(window);\r\n const container = viewportController && viewportController.container ? viewportController.container : undefined;\r\n const scope = viewportController && viewportController.scope ? viewportController.scope : $rootScope;\r\n\r\n viewport.css({\r\n 'overflow-anchor': 'none',\r\n 'overflow-y': 'auto',\r\n 'display': 'block'\r\n });\r\n\r\n function bufferPadding() {\r\n return viewport.outerHeight() * padding; // some extra space to initiate preload\r\n }\r\n\r\n angular.extend(viewport, {\r\n getScope() {\r\n return scope;\r\n },\r\n\r\n createPaddingElements(template) {\r\n topPadding = new Padding(template,rowHeight);\r\n bottomPadding = new Padding(template,rowHeight);\r\n element.before(topPadding.element);\r\n element.after(bottomPadding.element);\r\n topPadding.height(0);\r\n bottomPadding.height(0);\r\n },\r\n\r\n applyContainerStyle() {\r\n if (!container) {\r\n return true;\r\n }\r\n if(container !== viewport) {\r\n viewport.css('height', window.getComputedStyle(container[0]).height);\r\n }\r\n return viewport.height() > 0;\r\n },\r\n\r\n bottomDataPos() {\r\n let scrollHeight = viewport[0].scrollHeight;\r\n scrollHeight = scrollHeight != null ? scrollHeight : viewport[0].document.documentElement.scrollHeight;\r\n return scrollHeight - bottomPadding.height();\r\n },\r\n\r\n topDataPos() {\r\n return topPadding.height();\r\n },\r\n\r\n bottomVisiblePos() {\r\n return viewport.scrollTop() + viewport.outerHeight();\r\n },\r\n\r\n topVisiblePos() {\r\n return viewport.scrollTop();\r\n },\r\n\r\n insertElement(e, sibling) {\r\n return elementRoutines.insertElement(e, sibling || topPadding.element);\r\n },\r\n\r\n insertElementAnimated(e, sibling) {\r\n return elementRoutines.insertElementAnimated(e, sibling || topPadding.element);\r\n },\r\n\r\n shouldLoadBottom() {\r\n return !buffer.eof && viewport.bottomDataPos() < viewport.bottomVisiblePos() + bufferPadding();\r\n },\r\n\r\n clipBottom() {\r\n // clip the invisible items off the bottom\r\n let overage = 0;\r\n let overageHeight = 0;\r\n let itemHeight = 0;\r\n let emptySpaceHeight = viewport.bottomDataPos() - viewport.bottomVisiblePos() - bufferPadding();\r\n\r\n // Simple calculation now using the fixed rowHeight if available.\r\n // Might be optimized if needed\r\n for (let i = buffer.length - 1; i >= 0; i--) {\r\n itemHeight = rowHeight ? rowHeight : buffer[i].element.outerHeight(true);\r\n if (overageHeight + itemHeight > emptySpaceHeight) {\r\n break;\r\n }\r\n bottomPadding.cache.add(buffer[i]);\r\n overageHeight += itemHeight;\r\n overage++;\r\n }\r\n\r\n if (overage > 0) {\r\n buffer.eof = false;\r\n buffer.remove(buffer.length - overage, buffer.length);\r\n buffer.next -= overage;\r\n viewport.adjustPaddings();\r\n }\r\n },\r\n\r\n shouldLoadTop() {\r\n return !buffer.bof && (viewport.topDataPos() > viewport.topVisiblePos() - bufferPadding());\r\n },\r\n\r\n clipTop() {\r\n // clip the invisible items off the top\r\n let overage = 0;\r\n let overageHeight = 0;\r\n let itemHeight = 0;\r\n let emptySpaceHeight = viewport.topVisiblePos() - viewport.topDataPos() - bufferPadding();\r\n\r\n // Simple calculation now using the fixed rowHeight if available.\r\n // Might be optimized if needed\r\n for (let i = 0; i < buffer.length; i++) {\r\n itemHeight = rowHeight ? rowHeight : buffer[i].element.outerHeight(true);\r\n if (overageHeight + itemHeight > emptySpaceHeight) {\r\n break;\r\n }\r\n topPadding.cache.add(buffer[i]);\r\n overageHeight += itemHeight;\r\n overage++;\r\n }\r\n\r\n if (overage > 0) {\r\n // we need to adjust top padding element before items are removed from top\r\n // to avoid strange behaviour of scroll bar during remove top items when we are at the very bottom\r\n topPadding.height(topPadding.height() + overageHeight);\r\n buffer.bof = false;\r\n buffer.remove(0, overage);\r\n buffer.first += overage;\r\n }\r\n },\r\n\r\n adjustPaddings() {\r\n if (!buffer.length) {\r\n return;\r\n }\r\n\r\n // precise heights calculation based on items that are in buffer or that were in buffer once\r\n // outerHeight(true) == [height+ padding + border + margin]\r\n // The calculation bellow can certainly be replaced by:\r\n // const visibleItemsHeight = rowHeight ? rowHeight * buffer.length\r\n // : buffer.reduce((summ, item) => summ + item.element.outerHeight(true), 0);\r\n const visibleItemsHeight = buffer.reduce((summ, item) => summ + (rowHeight ? rowHeight : item.element.outerHeight(true)), 0);\r\n\r\n // Sinlarly, the calculation of the paddings (top & bottom) can certanly be optimizez\r\n let topPaddingHeight = 0, topCount = 0;\r\n topPadding.cache.forEach(item => {\r\n if(item.index < buffer.first) {\r\n topPaddingHeight += item.height; // outerHeight(true) is actually stored in this data member\r\n topCount++;\r\n }\r\n });\r\n\r\n let bottomPaddingHeight = 0, bottomCount = 0;\r\n bottomPadding.cache.forEach(item => {\r\n if(item.index >= buffer.next) {\r\n bottomPaddingHeight += item.height; // outerHeight(true) is actually stored in this data member\r\n bottomCount++;\r\n }\r\n });\r\n\r\n const totalHeight = visibleItemsHeight + topPaddingHeight + bottomPaddingHeight;\r\n const averageItemHeight = totalHeight / (topCount + bottomCount + buffer.length);\r\n\r\n // average heights calculation, items that have never been reached\r\n let adjustTopPadding = buffer.minIndexUser !== null && buffer.minIndex > buffer.minIndexUser;\r\n let adjustBottomPadding = buffer.maxIndexUser !== null && buffer.maxIndex < buffer.maxIndexUser;\r\n let topPaddingHeightAdd = adjustTopPadding ? (buffer.minIndex - buffer.minIndexUser) * averageItemHeight : 0;\r\n let bottomPaddingHeightAdd = adjustBottomPadding ? (buffer.maxIndexUser - buffer.maxIndex) * averageItemHeight : 0;\r\n\r\n // paddings combine adjustment\r\n topPadding.height(topPaddingHeight + topPaddingHeightAdd);\r\n bottomPadding.height(bottomPaddingHeight + bottomPaddingHeightAdd);\r\n },\r\n\r\n onAfterMinIndexSet(topPaddingHeightOld) {\r\n // additional scrollTop adjustment in case of datasource.minIndex external set\r\n if (buffer.minIndexUser !== null && buffer.minIndex > buffer.minIndexUser) {\r\n let diff = topPadding.height() - topPaddingHeightOld;\r\n viewport.scrollTop(viewport.scrollTop() + diff);\r\n while((diff -= viewport.scrollTop()) > 0) {\r\n bottomPadding.height(bottomPadding.height() + diff);\r\n viewport.scrollTop(viewport.scrollTop() + diff);\r\n }\r\n }\r\n },\r\n\r\n onAfterPrepend(updates) {\r\n if (!updates.prepended.length)\r\n return;\r\n const height = buffer.effectiveHeight(updates.prepended);\r\n const paddingHeight = topPadding.height() - height;\r\n if (paddingHeight >= 0) {\r\n topPadding.height(paddingHeight);\r\n }\r\n else {\r\n topPadding.height(0);\r\n viewport.scrollTop(viewport.scrollTop() - paddingHeight);\r\n }\r\n },\r\n\r\n resetTopPadding() {\r\n topPadding.height(0);\r\n topPadding.cache.clear();\r\n },\r\n\r\n resetBottomPadding() {\r\n bottomPadding.height(0);\r\n bottomPadding.cache.clear();\r\n },\r\n\r\n removeCacheItem(item, isTop) {\r\n topPadding.cache.remove(item, isTop);\r\n bottomPadding.cache.remove(item, isTop);\r\n },\r\n\r\n removeItem(item) {\r\n this.removeCacheItem(item);\r\n return buffer.remove(item);\r\n }\r\n });\r\n\r\n return viewport;\r\n}\r\n","class Adapter {\r\n\r\n constructor($scope, $parse, $attr, viewport, buffer, doAdjust, reload) {\r\n this.$parse = $parse;\r\n this.$attr = $attr;\r\n this.viewport = viewport;\r\n this.buffer = buffer;\r\n\r\n this.doAdjust = doAdjust;\r\n this.reload = reload;\r\n\r\n this.isLoading = false;\r\n this.disabled = false;\r\n\r\n const viewportScope = viewport.getScope();\r\n this.startScope = viewportScope.$parent ? viewportScope : $scope;\r\n\r\n this.publicContext = {};\r\n this.assignAdapter($attr.adapter);\r\n this.generatePublicContext();\r\n }\r\n\r\n assignAdapter(adapterAttr) {\r\n if (!adapterAttr || !(adapterAttr = adapterAttr.replace(/^\\s+|\\s+$/gm, ''))) {\r\n return;\r\n }\r\n let adapterOnScope;\r\n\r\n try {\r\n this.$parse(adapterAttr).assign(this.startScope, {});\r\n adapterOnScope = this.$parse(adapterAttr)(this.startScope);\r\n }\r\n catch (error) {\r\n error.message = `Angular ui-scroll Adapter assignment exception.\\n` +\r\n `Can't parse \"${adapterAttr}\" expression.\\n` +\r\n error.message;\r\n throw error;\r\n }\r\n\r\n angular.extend(adapterOnScope, this.publicContext);\r\n this.publicContext = adapterOnScope;\r\n }\r\n\r\n generatePublicContext() {\r\n // these methods will be accessible out of ui-scroll via user defined adapter\r\n const publicMethods = ['reload', 'applyUpdates', 'append', 'prepend', 'isBOF', 'isEOF', 'isEmpty'];\r\n for (let i = publicMethods.length - 1; i >= 0; i--) {\r\n this.publicContext[publicMethods[i]] = this[publicMethods[i]].bind(this);\r\n }\r\n\r\n // these read-only props will be accessible out of ui-scroll via user defined adapter\r\n const publicProps = ['isLoading', 'topVisible', 'topVisibleElement', 'topVisibleScope', 'bottomVisible', 'bottomVisibleElement', 'bottomVisibleScope'];\r\n for (let i = publicProps.length - 1; i >= 0; i--) {\r\n let property, attr = this.$attr[publicProps[i]];\r\n Object.defineProperty(this, publicProps[i], {\r\n get: () => property,\r\n set: (value) => {\r\n property = value;\r\n this.publicContext[publicProps[i]] = value;\r\n if (attr) {\r\n this.$parse(attr).assign(this.startScope, value);\r\n }\r\n }\r\n });\r\n }\r\n\r\n // non-read-only public property\r\n Object.defineProperty(this.publicContext, 'disabled', {\r\n get: () => this.disabled,\r\n set: (value) => (!(this.disabled = value)) ? this.doAdjust() : null\r\n });\r\n }\r\n\r\n loading(value) {\r\n this.isLoading = value;\r\n }\r\n\r\n isBOF() {\r\n return this.buffer.bof;\r\n }\r\n\r\n isEOF() {\r\n return this.buffer.eof;\r\n }\r\n\r\n isEmpty() {\r\n return !this.buffer.length;\r\n }\r\n\r\n append(newItems) {\r\n this.buffer.append(newItems);\r\n this.doAdjust();\r\n this.viewport.clipTop();\r\n this.viewport.clipBottom();\r\n }\r\n\r\n prepend(newItems) {\r\n this.buffer.prepend(newItems);\r\n this.doAdjust();\r\n this.viewport.clipTop();\r\n this.viewport.clipBottom();\r\n }\r\n\r\n applyUpdates(arg1, arg2) {\r\n if (typeof arg1 === 'function') {\r\n this.applyUpdatesFunc(arg1);\r\n } else {\r\n this.applyUpdatesIndex(arg1, arg2);\r\n }\r\n this.doAdjust();\r\n }\r\n\r\n applyUpdatesFunc(cb) {\r\n this.buffer.slice(0).forEach((wrapper) => {\r\n // we need to do it on the buffer clone, because buffer content\r\n // may change as we iterate through\r\n this.applyUpdate(wrapper, cb(wrapper.item, wrapper.scope, wrapper.element));\r\n });\r\n }\r\n\r\n applyUpdatesIndex(index, newItems) {\r\n if (index % 1 !== 0) {\r\n throw new Error('applyUpdates - ' + index + ' is not a valid index (should be an integer)');\r\n }\r\n const _index = index - this.buffer.first;\r\n\r\n // apply updates only within buffer\r\n if (_index >= 0 && _index < this.buffer.length) {\r\n this.applyUpdate(this.buffer[_index], newItems);\r\n }\r\n // out-of-buffer case: deletion may affect Paddings\r\n else if(index >= this.buffer.getAbsMinIndex() && index <= this.buffer.getAbsMaxIndex()) {\r\n if(angular.isArray(newItems) && !newItems.length) {\r\n this.viewport.removeCacheItem(index, index === this.buffer.minIndex);\r\n if(index === this.buffer.getAbsMinIndex()) {\r\n this.buffer.incrementMinIndex();\r\n }\r\n else {\r\n this.buffer.decrementMaxIndex();\r\n }\r\n }\r\n }\r\n }\r\n\r\n applyUpdate(wrapper, newItems) {\r\n if (!angular.isArray(newItems)) {\r\n return;\r\n }\r\n let position = this.buffer.indexOf(wrapper);\r\n if (!newItems.reverse().some(newItem => newItem === wrapper.item)) {\r\n wrapper.op = 'remove';\r\n if(position === 0 && !newItems.length) {\r\n wrapper._op = 'isTop'; // to catch \"first\" edge case on remove\r\n }\r\n }\r\n newItems.forEach((newItem) => {\r\n if (newItem === wrapper.item) {\r\n position--;\r\n } else {\r\n // 3 parameter (isTop) is to catch \"first\" edge case on insert\r\n this.buffer.insert(position + 1, newItem, position === -1);\r\n }\r\n });\r\n }\r\n\r\n calculateProperties() {\r\n let rowTop = null, topHeight = 0;\r\n let topDone = false, bottomDone = false;\r\n const length = this.buffer.length;\r\n\r\n for (let i = 0; i < length; i++) {\r\n const item = this.buffer[i];\r\n const itemTop = item.element.offset().top;\r\n\r\n if (rowTop !== itemTop) { // a new row condition\r\n const itemHeight = item.element.outerHeight(true);\r\n const top = this.viewport.topDataPos() + topHeight + itemHeight;\r\n\r\n if (!topDone && top > this.viewport.topVisiblePos()) {\r\n topDone = true;\r\n this['topVisible'] = item.item;\r\n this['topVisibleElement'] = item.element;\r\n this['topVisibleScope'] = item.scope;\r\n }\r\n if (!bottomDone && (top >= this.viewport.bottomVisiblePos() || (i === length - 1 && this.isEOF()))) {\r\n bottomDone = true;\r\n this['bottomVisible'] = item.item;\r\n this['bottomVisibleElement'] = item.element;\r\n this['bottomVisibleScope'] = item.scope;\r\n }\r\n topHeight += itemHeight;\r\n }\r\n rowTop = itemTop;\r\n\r\n if (topDone && bottomDone) {\r\n break;\r\n }\r\n }\r\n }\r\n\r\n}\r\n\r\nexport default Adapter;\r\n","import JQLiteExtras from './modules/jqLiteExtras';\nimport ElementRoutines from './modules/elementRoutines.js';\nimport ScrollBuffer from './modules/buffer.js';\nimport Viewport from './modules/viewport.js';\nimport Adapter from './modules/adapter.js';\n\nangular.module('ui.scroll', [])\n\n .constant('JQLiteExtras', JQLiteExtras)\n .run(['JQLiteExtras', (JQLiteExtras) => {\n !window.jQuery ? (new JQLiteExtras()).registerFor(angular.element) : null;\n ElementRoutines.addCSSRules();\n }])\n\n .directive('uiScrollViewport', function () {\n return {\n restrict: 'A',\n controller: [\n '$scope',\n '$element',\n function (scope, element) {\n this.container = element;\n this.viewport = element;\n this.scope = scope;\n\n angular.forEach(element.children(), child => {\n if (child.tagName.toLowerCase() === 'tbody') {\n this.viewport = angular.element(child);\n }\n });\n\n return this;\n }\n ]\n };\n })\n\n .directive('uiScroll', [\n '$log',\n '$injector',\n '$rootScope',\n '$timeout',\n '$interval',\n '$q',\n '$parse',\n function (console, $injector, $rootScope, $timeout, $interval, $q, $parse) {\n\n return {\n require: ['?^uiScrollViewport'],\n restrict: 'A',\n transclude: 'element',\n priority: 1000,\n terminal: true,\n link: link\n };\n\n function link($scope, element, $attr, controllers, linker) {\n const match = $attr.uiScroll.match(/^\\s*(\\w+)\\s+in\\s+([(\\w|\\$)\\.]+)\\s*$/);\n if (!match) {\n throw new Error('Expected uiScroll in form of \\'_item_ in _datasource_\\' but got \\'' + $attr.uiScroll + '\\'');\n }\n\n function parseNumber(value, defaultValue, isFloat) {\n if (!isFloat) {\n value = value === null ? defaultValue : Math.floor(value);\n }\n return isNaN(value) ? defaultValue : value;\n }\n\n function parseNumericAttr(value, defaultValue, isFloat) {\n const result = $parse(value)($scope);\n return parseNumber(result, defaultValue, isFloat);\n }\n\n const BUFFER_MIN = 3; // Minimum size of the data source request\n const BUFFER_DEFAULT = 10; // Default datasource request size\n const PADDING_MIN = 0.3; // Mininum # of rows in the padding area\n const PADDING_DEFAULT = 0.5; // Default # of rows in the padding area\n const START_INDEX_DEFAULT = 1; // Default start index when requestng the first data block\n const MAX_VIEWPORT_DELAY = 500; // Max time wait (ms) to get the viewport with an height>0\n const VIEWPORT_POLLING_INTERVAL = 50; // Interval used to check the initial viewport height\n\n let datasource = null;\n const itemName = match[1]; // Name of the index variable to publish\n const datasourceName = match[2]; // Name of the datasource to request the rows from\n const viewportController = controllers[0]; // ViewportController, as specified in the require option (http://websystique.com/angularjs/angularjs-custom-directives-controllers-require-option-guide/)\n const bufferSize = Math.max(BUFFER_MIN, parseNumericAttr($attr.bufferSize, BUFFER_DEFAULT)); \n const padding = Math.max(PADDING_MIN, parseNumericAttr($attr.padding, PADDING_DEFAULT, true));\n let startIndex = parseNumericAttr($attr.startIndex, START_INDEX_DEFAULT);\n\n // PHIL: Provide a fixed row height\n // \n const rowHeight = parseNumericAttr($attr.rowHeight, null, false);\n\n // PHIL: Read the visibility watch option, true by default\n const allowVisibilityWatch = $attr.allowVisibilityWatch!=='false';\n\n // Revision IDs\n // \n let ridActual = 0; // current data revision id\n let pending = [];\n\n const elementRoutines = new ElementRoutines($injector, $q);\n const buffer = new ScrollBuffer(elementRoutines, bufferSize, startIndex);\n const viewport = new Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding, rowHeight);\n const adapter = new Adapter($scope, $parse, $attr, viewport, buffer, doAdjust, reload);\n\n if (viewportController) {\n viewportController.adapter = adapter;\n }\n\n const isDatasourceValid = () =>\n Object.prototype.toString.call(datasource) === '[object Object]' && typeof datasource.get === 'function';\n\n datasource = $parse(datasourceName)($scope); // try to get datasource on scope\n if (!isDatasourceValid()) {\n datasource = $injector.get(datasourceName); // try to inject datasource as service\n if (!isDatasourceValid()) {\n throw new Error(datasourceName + ' is not a valid datasource');\n }\n }\n\n let onRenderHandlers = [];\n function onRenderHandlersRunner() {\n onRenderHandlers.forEach(handler => handler.run());\n onRenderHandlers = [];\n }\n function persistDatasourceIndex(datasource, propName) {\n let getter;\n // need to postpone min/maxIndexUser processing if the view is empty\n if(angular.isNumber(datasource[propName])) {\n getter = datasource[propName];\n if(angular.isNumber(getter)) {\n onRenderHandlers = onRenderHandlers.filter(handler => handler.id !== propName);\n onRenderHandlers.push({\n id: propName,\n run: () => datasource[propName] = getter\n });\n }\n }\n }\n\n function defineDatasourceIndex(datasource, propName, propUserName) {\n const descriptor = Object.getOwnPropertyDescriptor(datasource, propName);\n if (descriptor && (descriptor.set || descriptor.get)) {\n return;\n }\n let getter;\n persistDatasourceIndex(datasource, propName);\n Object.defineProperty(datasource, propName, {\n set: (value) => {\n getter = value;\n if(pending.length && !buffer.length) {\n persistDatasourceIndex(datasource, propName);\n return;\n }\n buffer[propUserName] = value;\n const topPaddingHeightOld = viewport.topDataPos();\n viewport.adjustPaddings();\n if (propName === 'minIndex') {\n viewport.onAfterMinIndexSet(topPaddingHeightOld);\n }\n },\n get: () => getter\n });\n }\n\n defineDatasourceIndex(datasource, 'minIndex', 'minIndexUser');\n defineDatasourceIndex(datasource, 'maxIndex', 'maxIndexUser');\n\n const fetchNext = (datasource.get.length !== 2) ?\n (success) => datasource.get(buffer.next, bufferSize, success) :\n (success) => {\n datasource.get({\n index: buffer.next,\n append: buffer.length ? buffer[buffer.length - 1].item : void 0,\n count: bufferSize\n }, success);\n };\n\n const fetchPrevious = (datasource.get.length !== 2) ?\n (success) => datasource.get(buffer.first - bufferSize, bufferSize, success) :\n (success) => {\n datasource.get({\n index: buffer.first - bufferSize,\n prepend: buffer.length ? buffer[0].item : void 0,\n count: bufferSize\n }, success);\n };\n\n const initialize = () => {\n let tryCount = 0;\n if(!viewport.applyContainerStyle()) {\n const timer = $interval(() => {\n tryCount++;\n if(viewport.applyContainerStyle()) {\n $interval.cancel(timer);\n doAdjust();\n }\n if(tryCount * VIEWPORT_POLLING_INTERVAL >= MAX_VIEWPORT_DELAY) {\n $interval.cancel(timer);\n throw Error(`ui-scroll directive requires a viewport with non-zero height in ${MAX_VIEWPORT_DELAY}ms`);\n }\n }, VIEWPORT_POLLING_INTERVAL);\n }\n else {\n doAdjust();\n }\n };\n\n /**\n * Build padding elements\n *\n * Calling linker is the only way I found to get access to the tag name of the template\n * to prevent the directive scope from pollution a new scope is created and destroyed\n * right after the builder creation is completed\n */\n linker((clone, scope) => {\n viewport.createPaddingElements(clone[0]);\n // we do not include the clone in the DOM. It means that the nested directives will not\n // be able to reach the parent directives, but in this case it is intentional because we\n // created the clone to access the template tag name\n scope.$destroy();\n clone.remove();\n });\n\n $scope.$on('$destroy', () => {\n unbindEvents();\n viewport.unbind('mousewheel', wheelHandler);\n });\n\n viewport.bind('mousewheel', wheelHandler);\n\n initialize();\n\n /* Private function definitions */\n\n function isInvalid(rid) {\n return (rid && rid !== ridActual) || $scope.$$destroyed;\n }\n\n function bindEvents() {\n viewport.bind('resize', resizeAndScrollHandler);\n viewport.bind('scroll', resizeAndScrollHandler);\n }\n\n function unbindEvents() {\n viewport.unbind('resize', resizeAndScrollHandler);\n viewport.unbind('scroll', resizeAndScrollHandler);\n }\n\n function reload() {\n viewport.resetTopPadding();\n viewport.resetBottomPadding();\n if (arguments.length) {\n startIndex = parseNumber(arguments[0], START_INDEX_DEFAULT, false);\n }\n buffer.reset(startIndex);\n persistDatasourceIndex(datasource, 'minIndex');\n persistDatasourceIndex(datasource, 'maxIndex');\n doAdjust();\n }\n\n function isElementVisible(wrapper) {\n return (rowHeight || wrapper.element.height()) && wrapper.element[0].offsetParent;\n }\n\n function visibilityWatcher(wrapper) {\n if (isElementVisible(wrapper)) {\n buffer.forEach((item) => {\n if (typeof item.unregisterVisibilityWatcher === 'function') {\n item.unregisterVisibilityWatcher();\n delete item.unregisterVisibilityWatcher;\n }\n });\n if (!pending.length) {\n $timeout(() => doAdjust());\n }\n }\n }\n\n function insertWrapperContent(wrapper, insertAfter) {\n createElement(wrapper, insertAfter, viewport.insertElement);\n if (allowVisibilityWatch && !isElementVisible(wrapper)) {\n wrapper.unregisterVisibilityWatcher = wrapper.scope.$watch(() => visibilityWatcher(wrapper));\n }\n if (allowVisibilityWatch) {\n elementRoutines.hideElement(wrapper); // hide inserted elements before data binding\n }\n }\n\n function createElement(wrapper, insertAfter, insertElement) {\n let promises = null;\n const sibling = (insertAfter > 0) ? buffer[insertAfter - 1].element : undefined;\n linker((clone, scope) => {\n promises = insertElement(clone, sibling);\n wrapper.element = clone;\n wrapper.scope = scope;\n scope[itemName] = wrapper.item;\n });\n // ui-scroll-grid apply\n if (adapter.transform) {\n const tdInitializer = wrapper.scope.uiScrollTdInitializer;\n if (tdInitializer && tdInitializer.linking) {\n adapter.transform(wrapper.scope, wrapper.element);\n } else {\n wrapper.scope.uiScrollTdInitializer = {\n onLink: () => adapter.transform(wrapper.scope, wrapper.element),\n scope: wrapper.scope\n };\n }\n }\n return promises;\n }\n\n function updateDOM() {\n let promises = [];\n const toBePrepended = [];\n const toBeRemoved = [];\n const inserted = [];\n\n buffer.forEach((wrapper, i) => {\n switch (wrapper.op) {\n case 'prepend':\n toBePrepended.unshift(wrapper);\n break;\n case 'append':\n insertWrapperContent(wrapper, i);\n wrapper.op = 'none';\n inserted.push(wrapper);\n break;\n case 'insert':\n promises = promises.concat(createElement(wrapper, i, viewport.insertElementAnimated));\n wrapper.op = 'none';\n inserted.push(wrapper);\n break;\n case 'remove':\n toBeRemoved.push(wrapper);\n }\n });\n\n toBeRemoved.forEach((wrapper) => promises = promises.concat(viewport.removeItem(wrapper)));\n\n if (toBePrepended.length)\n toBePrepended.forEach((wrapper) => {\n insertWrapperContent(wrapper);\n wrapper.op = 'none';\n });\n\n buffer.forEach((item, i) => item.scope.$index = buffer.first + i);\n\n return {\n prepended: toBePrepended,\n removed: toBeRemoved,\n inserted: inserted,\n animated: promises\n };\n\n }\n\n // Adjust the viewport paddings\n // \n function updatePaddings(rid, updates) {\n // schedule another doAdjust after animation completion\n if (updates.animated.length) {\n $q.all(updates.animated).then(() => {\n viewport.adjustPaddings();\n doAdjust(rid);\n });\n } else {\n viewport.adjustPaddings();\n }\n }\n\n function enqueueFetch(rid, updates) {\n if (viewport.shouldLoadBottom()) {\n if (!updates || buffer.effectiveHeight(updates.inserted) > 0) {\n // this means that at least one item appended in the last batch has height > 0\n if (pending.push(true) === 1) {\n adapter.loading(true);\n fetch(rid);\n }\n }\n } else if (viewport.shouldLoadTop()) {\n if ((!updates || buffer.effectiveHeight(updates.prepended) > 0) || pending[0]) {\n // this means that at least one item appended in the last batch has height > 0\n // pending[0] = true means that previous fetch was appending. We need to force at least one prepend\n // BTW there will always be at least 1 element in the pending array because bottom is fetched first\n if (pending.push(false) === 1) {\n adapter.loading(true);\n fetch(rid);\n }\n }\n }\n }\n\n function processUpdates() {\n const updates = updateDOM();\n\n // We need the item bindings to be processed before we can do adjustments\n !$scope.$$phase && !$rootScope.$$phase && $scope.$digest();\n\n if (allowVisibilityWatch) {\n updates.inserted.forEach(w => elementRoutines.showElement(w));\n updates.prepended.forEach(w => elementRoutines.showElement(w));\n }\n\n return updates;\n }\n\n function doAdjust(rid) {\n if (!rid) { // dismiss pending requests\n pending = [];\n rid = ++ridActual;\n }\n\n const updates = processUpdates();\n\n if (isInvalid(rid)) {\n return;\n }\n\n updatePaddings(rid, updates);\n enqueueFetch(rid);\n\n if (!pending.length) {\n adapter.calculateProperties();\n }\n }\n\n function doAdjustAfterFetch(rid) {\n const updates = processUpdates();\n\n viewport.onAfterPrepend(updates);\n\n if (isInvalid(rid)) {\n return;\n }\n\n updatePaddings(rid, updates);\n onRenderHandlersRunner();\n enqueueFetch(rid, updates);\n pending.shift();\n\n if (pending.length)\n fetch(rid);\n else {\n adapter.loading(false);\n bindEvents();\n adapter.calculateProperties();\n }\n }\n\n function fetch(rid) {\n if (pending[0]) {// scrolling down\n if (buffer.length && !viewport.shouldLoadBottom()) {\n doAdjustAfterFetch(rid);\n } else {\n fetchNext((result) => {\n if (isInvalid(rid)) {\n return;\n }\n\n if (result.length < bufferSize) {\n buffer.eof = true;\n }\n\n if (result.length > 0) {\n viewport.clipTop();\n buffer.append(result);\n }\n\n doAdjustAfterFetch(rid);\n });\n }\n } else { // scrolling up\n if (buffer.length && !viewport.shouldLoadTop()) {\n doAdjustAfterFetch(rid);\n } else {\n fetchPrevious((result) => {\n if (isInvalid(rid)) {\n return;\n }\n\n if (result.length < bufferSize) {\n buffer.bof = true;\n // log 'bof is reached'\n }\n\n if (result.length > 0) {\n if (buffer.length) {\n viewport.clipBottom();\n }\n buffer.prepend(result);\n }\n\n doAdjustAfterFetch(rid);\n });\n }\n }\n }\n\n function resizeAndScrollHandler() {\n if (!$rootScope.$$phase && !adapter.isLoading && !adapter.disabled) {\n\n enqueueFetch(ridActual);\n\n if (pending.length) {\n unbindEvents();\n } else {\n adapter.calculateProperties();\n if(!rowHeight) {\n // The digest is forced to calculate the height, which is not necessary when the height is knowm\n !$scope.$$phase && $scope.$digest();\n }\n }\n }\n }\n\n function wheelHandler(event) {\n if (!adapter.disabled) {\n const scrollTop = viewport[0].scrollTop;\n const yMax = viewport[0].scrollHeight - viewport[0].clientHeight;\n\n if ((scrollTop === 0 && !buffer.bof) || (scrollTop === yMax && !buffer.eof)) {\n event.preventDefault();\n }\n }\n }\n }\n\n }\n ]);\n"],"sourceRoot":""} \ No newline at end of file diff --git a/dist/ui-scroll.min.js b/dist/ui-scroll.min.js index 8526cfad..42f037d6 100644 --- a/dist/ui-scroll.min.js +++ b/dist/ui-scroll.min.js @@ -1,2 +1,2 @@ -!function(n){var r={};function i(e){if(r[e])return r[e].exports;var t=r[e]={i:e,l:!1,exports:{}};return n[e].call(t.exports,t,t.exports,i),t.l=!0,t.exports}i.m=n,i.c=r,i.d=function(e,t,n){i.o(e,t)||Object.defineProperty(e,t,{enumerable:!0,get:n})},i.r=function(e){"undefined"!=typeof Symbol&&Symbol.toStringTag&&Object.defineProperty(e,Symbol.toStringTag,{value:"Module"}),Object.defineProperty(e,"__esModule",{value:!0})},i.t=function(t,e){if(1&e&&(t=i(t)),8&e)return t;if(4&e&&"object"==typeof t&&t&&t.__esModule)return t;var n=Object.create(null);if(i.r(n),Object.defineProperty(n,"default",{enumerable:!0,value:t}),2&e&&"string"!=typeof t)for(var r in t)i.d(n,r,function(e){return t[e]}.bind(null,r));return n},i.n=function(e){var t=e&&e.__esModule?function(){return e.default}:function(){return e};return i.d(t,"a",t),t},i.o=function(e,t){return Object.prototype.hasOwnProperty.call(e,t)},i.p="",i(i.s=1)}([,function(e,t,n){"use strict";function g(e,t){return function(e){if(Array.isArray(e))return e}(e)||function(e,t){var n=[],r=!0,i=!1,o=void 0;try{for(var a,s=e[Symbol.iterator]();!(r=(a=s.next()).done)&&(n.push(a.value),!t||n.length!==t);r=!0);}catch(e){i=!0,o=e}finally{try{r||null==s.return||s.return()}finally{if(i)throw o}}return n}(e,t)||function(){throw new TypeError("Invalid attempt to destructure non-iterable instance")}()}function i(e,t){for(var n=0;ni.minIndexUser)return void i.minIndexUser++;i.minIndex===i.minIndexUser&&i.minIndexUser++}i.minIndex++},decrementMaxIndex:function(){null!==i.maxIndexUser&&i.maxIndex<=i.maxIndexUser&&i.maxIndexUser--,i.maxIndex--},getAbsMinIndex:function(){return null!==i.minIndexUser?Math.min(i.minIndexUser,i.minIndex):i.minIndex},getAbsMaxIndex:function(){return null!==i.maxIndexUser?Math.max(i.maxIndexUser,i.maxIndex):i.maxIndex},effectiveHeight:function(e){if(!e.length)return 0;var t=Number.MAX_VALUE,n=Number.NEGATIVE_INFINITY;return e.forEach(function(e){e.element[0].offsetParent&&(t=Math.min(t,e.element.offset().top),n=Math.max(n,e.element.offset().top+e.element.outerHeight(!0)))}),Math.max(0,n-t)}}),i.reset(t),i}function u(e,t){if(!(e instanceof t))throw new TypeError("Cannot call a class as a function")}function l(e,t){for(var n=0;nt.index?1:0})}},{key:"remove",value:function(e,t){for(var n=e%1==0?e:e.scope.$index,r=e%1==0?t:"isTop"===e._op,i=this.length-1;0<=i;i--)if(this[i].index===n){this.splice(i,1);break}if(!r)for(var o=this.length-1;0<=o;o--)this[o].index>n&&this[o].index--}},{key:"clear",value:function(){this.length=0}}]),e}();function d(){var e=[];return e.push.apply(e,arguments),Object.setPrototypeOf(e,d.prototype),e}d.prototype=Object.create(Array.prototype),Object.getOwnPropertyNames(f.prototype).forEach(function(e){return d.prototype[e]=f.prototype[e]});var p=function(){function n(e,t){u(this,n),this.element=function(e){if(e.nodeType!==Node.ELEMENT_NODE)throw new Error("ui-scroll directive requires an Element node for templating the view");var t;switch(e.tagName.toLowerCase()){case"dl":throw new Error("ui-scroll directive does not support <".concat(e.tagName,"> as a repeating tag: ").concat(e.outerHTML));case"tr":t=angular.element("
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t=d.height()-e;for(o.scrollTop(o.scrollTop()+t);0<(t-=o.scrollTop());)h.height(h.height()+t),o.scrollTop(o.scrollTop()+t)}},onAfterPrepend:function(e){if(e.prepended.length){var t=c.effectiveHeight(e.prepended),n=d.height()-t;0<=n?d.height(n):(d.height(0),o.scrollTop(o.scrollTop()-n))}},resetTopPadding:function(){d.height(0),d.cache.clear()},resetBottomPadding:function(){h.height(0),h.cache.clear()},removeCacheItem:function(e,t){d.cache.remove(e,t),h.cache.remove(e,t)},removeItem:function(e){return this.removeCacheItem(e),c.remove(e)}}),o}function h(e,t){for(var n=0;n=this.buffer.getAbsMinIndex()&&e<=this.buffer.getAbsMaxIndex()&&angular.isArray(t)&&!t.length&&(this.viewport.removeCacheItem(e,e===this.buffer.minIndex),e===this.buffer.getAbsMinIndex()?this.buffer.incrementMinIndex():this.buffer.decrementMaxIndex())}},{key:"applyUpdate",value:function(t,e){var n=this;if(angular.isArray(e)){var r=this.buffer.indexOf(t);e.reverse().some(function(e){return e===t.item})||(t.op="remove",0!==r||e.length||(t._op="isTop")),e.forEach(function(e){e===t.item?r--:n.buffer.insert(r+1,e,-1===r)})}}},{key:"calculateProperties",value:function(){for(var e=null,t=0,n=!1,r=!1,i=this.buffer.length,o=0;othis.viewport.topVisiblePos()&&(n=!0,this.topVisible=a.item,this.topVisibleElement=a.element,this.topVisibleScope=a.scope),!r&&(l>=this.viewport.bottomVisiblePos()||o===i-1&&this.isEOF())&&(r=!0,this.bottomVisible=a.item,this.bottomVisibleElement=a.element,this.bottomVisibleScope=a.scope),t+=u}if(e=s,n&&r)break}}}])&&h(e.prototype,t),n&&h(e,n),u}();angular.module("ui.scroll",[]).constant("JQLiteExtras",r).run(["JQLiteExtras",function(e){!window.jQuery&&(new e).registerFor(angular.element),X.addCSSRules()}]).directive("uiScrollViewport",function(){return{restrict:"A",controller:["$scope","$element",function(e,t){var n=this;return this.container=t,this.viewport=t,this.scope=e,angular.forEach(t.children(),function(e){"tbody"===e.tagName.toLowerCase()&&(n.viewport=angular.element(e))}),this}]}}).directive("uiScroll",["$log","$injector","$rootScope","$timeout","$interval","$q","$parse",function(e,F,R,W,z,q,Q){return{require:["?^uiScrollViewport"],restrict:"A",transclude:"element",priority:1e3,terminal:!0,link:function(i,e,t,n,a){var r=t.uiScroll.match(/^\s*(\w+)\s+in\s+([(\w|\$)\.]+)\s*$/);if(!r)throw new Error("Expected uiScroll in form of '_item_ in _datasource_' but got '"+t.uiScroll+"'");function o(e,t,n){return n||(e=null===e?t:Math.floor(e)),isNaN(e)?t:e}function s(e,t,n){var r=Q(e)(i);return o(r,t,n)}var u=null,l=r[1],c=r[2],f=n[0],d=Math.max(3,s(t.bufferSize,10)),h=Math.max(.3,s(t.padding,.5,!0)),p=s(t.startIndex,1),m=s(t.rowHeight,null,!1),g="false"!==t.allowVisibilityWatch,v=0,b=[],x=new X(F,q),y=new Y(x,d,p),w=new J(x,y,e,f,R,h,m),I=new G(i,Q,t,w,y,H,function(){w.resetTopPadding(),w.resetBottomPadding(),arguments.length&&(p=o(arguments[0],1,!1));y.reset(p),P(u,"minIndex"),P(u,"maxIndex"),H()});f&&(f.adapter=I);var E=function(){return"[object Object]"===Object.prototype.toString.call(u)&&"function"==typeof u.get};if(u=Q(c)(i),!E()&&(u=F.get(c),!E()))throw new Error(c+" is not a valid datasource");var $=[];function P(e,t){var n;angular.isNumber(e[t])&&(n=e[t],angular.isNumber(n)&&($=$.filter(function(e){return e.id!==t})).push({id:t,run:function(){return e[t]=n}}))}function T(n,r,i){var o,e=Object.getOwnPropertyDescriptor(n,r);e&&(e.set||e.get)||(P(n,r),Object.defineProperty(n,r,{set:function(e){if(o=e,!b.length||y.length){y[i]=e;var t=w.topDataPos();w.adjustPaddings(),"minIndex"===r&&w.onAfterMinIndexSet(t)}else P(n,r)},get:function(){return o}}))}T(u,"minIndex","minIndexUser"),T(u,"maxIndex","maxIndexUser");var S=2!==u.get.length?function(e){return u.get(y.next,d,e)}:function(e){u.get({index:y.next,append:y.length?y[y.length-1].item:void 0,count:d},e)},k=2!==u.get.length?function(e){return u.get(y.first-d,d,e)}:function(e){u.get({index:y.first-d,prepend:y.length?y[0].item:void 0,count:d},e)};function A(e){return e&&e!==v||i.$$destroyed}function O(){w.unbind("resize",B),w.unbind("scroll",B)}function j(e){return(m||e.element.height())&&e.element[0].offsetParent}function U(e,t){M(e,t,w.insertElement),g&&!j(e)&&(e.unregisterVisibilityWatcher=e.scope.$watch(function(){j(e)&&(y.forEach(function(e){"function"==typeof e.unregisterVisibilityWatcher&&(e.unregisterVisibilityWatcher(),delete e.unregisterVisibilityWatcher)}),b.length||W(function(){return H()}))})),g&&x.hideElement(e)}function M(n,e,r){var i=null,o=0 obj && obj.document && obj.location && obj.alert && obj.setInterval;\r\n\r\n function scrollTo(self, direction, value) {\r\n let elem = self[0];\r\n let [method, prop, preserve] = {\r\n top: [\r\n 'scrollTop',\r\n 'pageYOffset',\r\n 'scrollLeft'\r\n ],\r\n left: [\r\n 'scrollLeft',\r\n 'pageXOffset',\r\n 'scrollTop'\r\n ]\r\n }[direction];\r\n\r\n const isValueDefined = typeof value !== 'undefined';\r\n if (isWindow(elem)) {\r\n if (isValueDefined) {\r\n return elem.scrollTo(self[preserve].call(self), value);\r\n }\r\n return (prop in elem) ? elem[prop] : elem.document.documentElement[method];\r\n } else {\r\n if (isValueDefined) {\r\n elem[method] = value;\r\n }\r\n return elem[method];\r\n }\r\n }\r\n\r\n if (window.getComputedStyle) {\r\n getStyle = (elem) => window.getComputedStyle(elem, null);\r\n convertToPx = (elem, value) => parseFloat(value);\r\n } else {\r\n getStyle = (elem) => elem.currentStyle;\r\n convertToPx = (elem, value) => {\r\n let left, result, rs, rsLeft, style;\r\n let core_pnum = /[+-]?(?:\\d*\\.|)\\d+(?:[eE][+-]?\\d+|)/.source;\r\n let rnumnonpx = new RegExp('^(' + core_pnum + ')(?!px)[a-z%]+$', 'i');\r\n\r\n if (!rnumnonpx.test(value)) {\r\n return parseFloat(value);\r\n }\r\n\r\n // ported from JQuery\r\n style = elem.style;\r\n left = style.left;\r\n rs = elem.runtimeStyle;\r\n rsLeft = rs && rs.left;\r\n if (rs) {\r\n rs.left = style.left;\r\n }\r\n // put in the new values to get a computed style out\r\n style.left = value;\r\n result = style.pixelLeft;\r\n style.left = left;\r\n if (rsLeft) {\r\n rs.left = rsLeft;\r\n }\r\n return result;\r\n };\r\n }\r\n\r\n function getMeasurements(elem, measure) {\r\n let base, borderA, borderB, computedMarginA, computedMarginB, computedStyle, dirA, dirB, marginA, marginB, paddingA, paddingB;\r\n\r\n if (isWindow(elem)) {\r\n base = document.documentElement[{height: 'clientHeight', width: 'clientWidth'}[measure]];\r\n\r\n return {\r\n base: base,\r\n padding: 0,\r\n border: 0,\r\n margin: 0\r\n };\r\n }\r\n\r\n // Start with offset property\r\n [\r\n base,\r\n dirA,\r\n dirB\r\n ] = {\r\n width: [\r\n elem.offsetWidth,\r\n 'Left',\r\n 'Right'\r\n ],\r\n height: [\r\n elem.offsetHeight,\r\n 'Top',\r\n 'Bottom'\r\n ]\r\n }[measure];\r\n\r\n computedStyle = getStyle(elem);\r\n paddingA = convertToPx(elem, computedStyle['padding' + dirA]) || 0;\r\n paddingB = convertToPx(elem, computedStyle['padding' + dirB]) || 0;\r\n borderA = convertToPx(elem, computedStyle['border' + dirA + 'Width']) || 0;\r\n borderB = convertToPx(elem, computedStyle['border' + dirB + 'Width']) || 0;\r\n computedMarginA = computedStyle['margin' + dirA];\r\n computedMarginB = computedStyle['margin' + dirB];\r\n\r\n // I do not care for width for now, so this hack is irrelevant\r\n // if ( !supportsPercentMargin )\r\n // computedMarginA = hackPercentMargin( elem, computedStyle, computedMarginA )\r\n // computedMarginB = hackPercentMargin( elem, computedStyle, computedMarginB )\r\n marginA = convertToPx(elem, computedMarginA) || 0;\r\n marginB = convertToPx(elem, computedMarginB) || 0;\r\n\r\n return {\r\n base: base,\r\n padding: paddingA + paddingB,\r\n border: borderA + borderB,\r\n margin: marginA + marginB\r\n };\r\n }\r\n\r\n function getWidthHeight(elem, direction, measure) {\r\n let computedStyle, result;\r\n\r\n let measurements = getMeasurements(elem, direction);\r\n\r\n if (measurements.base > 0) {\r\n return {\r\n base: measurements.base - measurements.padding - measurements.border,\r\n outer: measurements.base,\r\n outerfull: measurements.base + measurements.margin\r\n }[measure];\r\n }\r\n\r\n // Fall back to computed then uncomputed css if necessary\r\n computedStyle = getStyle(elem);\r\n result = computedStyle[direction];\r\n\r\n if (result < 0 || result === null) {\r\n result = elem.style[direction] || 0;\r\n }\r\n\r\n // Normalize \"\", auto, and prepare for extra\r\n result = parseFloat(result) || 0;\r\n\r\n return {\r\n base: result - measurements.padding - measurements.border,\r\n outer: result,\r\n outerfull: result + measurements.padding + measurements.border + measurements.margin\r\n }[measure];\r\n }\r\n\r\n // define missing methods\r\n return angular.forEach({\r\n before(newElem) {\r\n var children, elem, i, j, parent, ref, self;\r\n self = this;\r\n elem = self[0];\r\n parent = self.parent();\r\n children = parent.contents();\r\n if (children[0] === elem) {\r\n return parent.prepend(newElem);\r\n } else {\r\n for (i = j = 1, ref = children.length - 1; 1 <= ref ? j <= ref : j >= ref; i = 1 <= ref ? ++j : --j) {\r\n if (children[i] === elem) {\r\n angular.element(children[i - 1]).after(newElem);\r\n return;\r\n }\r\n }\r\n throw new Error('invalid DOM structure ' + elem.outerHTML);\r\n }\r\n },\r\n height (value){\r\n var self;\r\n self = this;\r\n if (typeof value !== 'undefined') {\r\n if (angular.isNumber(value)) {\r\n value = value + 'px';\r\n }\r\n return css.call(self, 'height', value);\r\n } else {\r\n return getWidthHeight(this[0], 'height', 'base');\r\n }\r\n },\r\n outerHeight(option) {\r\n return getWidthHeight(this[0], 'height', option ? 'outerfull' : 'outer');\r\n },\r\n outerWidth(option) {\r\n return getWidthHeight(this[0], 'width', option ? 'outerfull' : 'outer');\r\n },\r\n\r\n /*\r\n The offset setter method is not implemented\r\n */\r\n offset(value) {\r\n let docElem, win;\r\n let self = this;\r\n let box = {\r\n top: 0,\r\n left: 0\r\n };\r\n let elem = self[0];\r\n let doc = elem && elem.ownerDocument;\r\n\r\n if (arguments.length) {\r\n if (value === undefined) {\r\n return self;\r\n }\r\n // TODO: implement setter\r\n throw new Error('offset setter method is not implemented');\r\n }\r\n\r\n if (!doc) {\r\n return;\r\n }\r\n\r\n docElem = doc.documentElement;\r\n\r\n // TODO: Make sure it's not a disconnected DOM node\r\n\r\n if (elem.getBoundingClientRect != null) {\r\n box = elem.getBoundingClientRect();\r\n }\r\n\r\n win = doc.defaultView || doc.parentWindow;\r\n\r\n return {\r\n top: box.top + (win.pageYOffset || docElem.scrollTop) - (docElem.clientTop || 0),\r\n left: box.left + (win.pageXOffset || docElem.scrollLeft) - (docElem.clientLeft || 0)\r\n };\r\n },\r\n scrollTop(value) {\r\n return scrollTo(this, 'top', value);\r\n },\r\n scrollLeft(value) {\r\n return scrollTo(this, 'left', value);\r\n }\r\n }, (value, key) => {\r\n if (!element.prototype[key]) {\r\n return element.prototype[key] = value;\r\n }\r\n });\r\n }\r\n\r\n}\r\n","const hideClassToken = 'ng-ui-scroll-hide';\r\n\r\nexport default class ElementRoutines {\r\n\r\n static addCSSRules() {\r\n const selector = '.' + hideClassToken;\r\n const rules = 'display: none';\r\n const sheet = document.styleSheets[0];\r\n let index;\r\n try {\r\n index = sheet.cssRules.length;\r\n } catch (err) {\r\n index = 0;\r\n }\r\n if('insertRule' in sheet) {\r\n sheet.insertRule(selector + '{' + rules + '}', index);\r\n }\r\n else if('addRule' in sheet) {\r\n sheet.addRule(selector, rules, index);\r\n }\r\n }\r\n\r\n constructor($injector, $q) {\r\n this.$animate = ($injector.has && $injector.has('$animate')) ? $injector.get('$animate') : null;\r\n this.isAngularVersionLessThen1_3 = angular.version.major === 1 && angular.version.minor < 3;\r\n this.$q = $q;\r\n }\r\n\r\n hideElement(wrapper) {\r\n wrapper.element.addClass(hideClassToken);\r\n }\r\n\r\n showElement(wrapper) {\r\n wrapper.element.removeClass(hideClassToken);\r\n }\r\n\r\n insertElement(newElement, previousElement) {\r\n previousElement.after(newElement);\r\n return [];\r\n }\r\n\r\n removeElement(wrapper) {\r\n wrapper.element.remove();\r\n wrapper.scope.$destroy();\r\n return [];\r\n }\r\n\r\n insertElementAnimated(newElement, previousElement) {\r\n if (!this.$animate) {\r\n return this.insertElement(newElement, previousElement);\r\n }\r\n\r\n if (this.isAngularVersionLessThen1_3) {\r\n const deferred = this.$q.defer();\r\n // no need for parent - previous element is never null\r\n this.$animate.enter(newElement, null, previousElement, () => deferred.resolve());\r\n\r\n return [deferred.promise];\r\n }\r\n\r\n // no need for parent - previous element is never null\r\n return [this.$animate.enter(newElement, null, previousElement)];\r\n }\r\n\r\n removeElementAnimated(wrapper) {\r\n if (!this.$animate) {\r\n return this.removeElement(wrapper);\r\n }\r\n\r\n if (this.isAngularVersionLessThen1_3) {\r\n const deferred = this.$q.defer();\r\n this.$animate.leave(wrapper.element, () => {\r\n wrapper.scope.$destroy();\r\n return deferred.resolve();\r\n });\r\n\r\n return [deferred.promise];\r\n }\r\n\r\n return [(this.$animate.leave(wrapper.element)).then(() => wrapper.scope.$destroy())];\r\n }\r\n}","export default function ScrollBuffer(elementRoutines, bufferSize, startIndex) {\r\n const buffer = Object.create(Array.prototype);\r\n\r\n angular.extend(buffer, {\r\n size: bufferSize,\r\n\r\n reset(startIndex) {\r\n buffer.remove(0, buffer.length);\r\n buffer.eof = false;\r\n buffer.bof = false;\r\n buffer.first = startIndex;\r\n buffer.next = startIndex;\r\n buffer.minIndex = startIndex;\r\n buffer.maxIndex = startIndex;\r\n buffer.minIndexUser = null;\r\n buffer.maxIndexUser = null;\r\n },\r\n\r\n append(items) {\r\n items.forEach((item) => {\r\n ++buffer.next;\r\n buffer.insert('append', item);\r\n });\r\n buffer.maxIndex = buffer.eof ? buffer.next - 1 : Math.max(buffer.next - 1, buffer.maxIndex);\r\n },\r\n\r\n prepend(items) {\r\n items.reverse().forEach((item) => {\r\n --buffer.first;\r\n buffer.insert('prepend', item);\r\n });\r\n buffer.minIndex = buffer.bof ? buffer.minIndex = buffer.first : Math.min(buffer.first, buffer.minIndex);\r\n },\r\n\r\n /**\r\n * inserts wrapped element in the buffer\r\n * the first argument is either operation keyword (see below) or a number for operation 'insert'\r\n * for insert the number is the index for the buffer element the new one have to be inserted after\r\n * operations: 'append', 'prepend', 'insert', 'remove', 'update', 'none'\r\n */\r\n insert(operation, item, isTop) {\r\n const wrapper = {\r\n item: item\r\n };\r\n\r\n if (operation % 1 === 0) {// it is an insert\r\n wrapper.op = 'insert';\r\n buffer.splice(operation, 0, wrapper);\r\n if(isTop) {\r\n buffer.first--;\r\n }\r\n else {\r\n buffer.next++;\r\n }\r\n } else {\r\n wrapper.op = operation;\r\n switch (operation) {\r\n case 'append':\r\n buffer.push(wrapper);\r\n break;\r\n case 'prepend':\r\n buffer.unshift(wrapper);\r\n break;\r\n }\r\n }\r\n },\r\n\r\n // removes elements from buffer\r\n remove(arg1, arg2) {\r\n if (angular.isNumber(arg1)) {\r\n // removes items from arg1 (including) through arg2 (excluding)\r\n for (let i = arg1; i < arg2; i++) {\r\n elementRoutines.removeElement(buffer[i]);\r\n }\r\n return buffer.splice(arg1, arg2 - arg1);\r\n }\r\n // removes single item(wrapper) from the buffer\r\n buffer.splice(buffer.indexOf(arg1), 1);\r\n if(arg1._op === 'isTop' && buffer.first === this.getAbsMinIndex()) {\r\n this.incrementMinIndex();\r\n }\r\n else {\r\n this.decrementMaxIndex();\r\n }\r\n if(arg1._op === 'isTop') {\r\n buffer.first++;\r\n }\r\n else {\r\n buffer.next--;\r\n }\r\n if(!buffer.length) {\r\n buffer.first = 1;\r\n buffer.next = 1;\r\n }\r\n\r\n return elementRoutines.removeElementAnimated(arg1);\r\n },\r\n\r\n incrementMinIndex() {\r\n if(buffer.minIndexUser !== null) {\r\n if(buffer.minIndex > buffer.minIndexUser) {\r\n buffer.minIndexUser++;\r\n return;\r\n }\r\n if(buffer.minIndex === buffer.minIndexUser) {\r\n buffer.minIndexUser++;\r\n }\r\n }\r\n buffer.minIndex++;\r\n },\r\n\r\n decrementMaxIndex() {\r\n if(buffer.maxIndexUser !== null && buffer.maxIndex <= buffer.maxIndexUser) {\r\n buffer.maxIndexUser--;\r\n }\r\n buffer.maxIndex--;\r\n },\r\n\r\n getAbsMinIndex() {\r\n if(buffer.minIndexUser !== null) {\r\n return Math.min(buffer.minIndexUser, buffer.minIndex);\r\n }\r\n return buffer.minIndex;\r\n },\r\n\r\n getAbsMaxIndex() {\r\n if(buffer.maxIndexUser !== null) {\r\n return Math.max(buffer.maxIndexUser, buffer.maxIndex);\r\n }\r\n return buffer.maxIndex;\r\n },\r\n\r\n effectiveHeight(elements) {\r\n if (!elements.length) {\r\n return 0;\r\n }\r\n let top = Number.MAX_VALUE;\r\n let bottom = Number.NEGATIVE_INFINITY;\r\n elements.forEach((wrapper) => {\r\n if (wrapper.element[0].offsetParent) {\r\n // element style is not display:none\r\n top = Math.min(top, wrapper.element.offset().top);\r\n bottom = Math.max(bottom, wrapper.element.offset().top + wrapper.element.outerHeight(true));\r\n }\r\n });\r\n return Math.max(0, bottom - top);\r\n }\r\n\r\n });\r\n\r\n buffer.reset(startIndex);\r\n\r\n return buffer;\r\n}\r\n","// Can't just extend the Array, due to Babel does not support built-in classes extending\r\n// This solution was taken from https://stackoverflow.com/questions/46897414/es6-class-extends-array-workaround-for-es5-babel-transpile\r\nclass CacheProto {\r\n add(item) {\r\n for (let i = this.length - 1; i >= 0; i--) {\r\n if (this[i].index === item.scope.$index) {\r\n this[i].height = this.rowHeight || item.element.outerHeight();\r\n return;\r\n }\r\n }\r\n this.push({\r\n index: item.scope.$index,\r\n height: this.rowHeight || item.element.outerHeight()\r\n });\r\n this.sort((a, b) => ((a.index < b.index) ? -1 : ((a.index > b.index) ? 1 : 0)));\r\n }\r\n\r\n remove(argument, _isTop) {\r\n const index = argument % 1 === 0 ? argument : argument.scope.$index;\r\n const isTop = argument % 1 === 0 ? _isTop : argument._op === 'isTop';\r\n for (let i = this.length - 1; i >= 0; i--) {\r\n if (this[i].index === index) {\r\n this.splice(i, 1);\r\n break;\r\n }\r\n }\r\n if(!isTop) {\r\n for (let i = this.length - 1; i >= 0; i--) {\r\n if (this[i].index > index) {\r\n this[i].index--;\r\n }\r\n }\r\n }\r\n }\r\n\r\n clear() {\r\n this.length = 0;\r\n }\r\n}\r\n\r\nfunction Cache() {\r\n const instance = [];\r\n instance.push.apply(instance, arguments);\r\n Object.setPrototypeOf(instance, Cache.prototype);\r\n return instance;\r\n}\r\nCache.prototype = Object.create(Array.prototype);\r\nObject.getOwnPropertyNames(CacheProto.prototype).forEach(methodName =>\r\n Cache.prototype[methodName] = CacheProto.prototype[methodName]\r\n);\r\n\r\nfunction generateElement(template) {\r\n if(template.nodeType !== Node.ELEMENT_NODE) {\r\n throw new Error('ui-scroll directive requires an Element node for templating the view');\r\n }\r\n let element;\r\n switch (template.tagName.toLowerCase()) {\r\n case 'dl':\r\n throw new Error(`ui-scroll directive does not support <${template.tagName}> as a repeating tag: ${template.outerHTML}`);\r\n case 'tr':\r\n let table = angular.element('
    ');\r\n element = table.find('tr');\r\n break;\r\n case 'li':\r\n element = angular.element('
  • ');\r\n break;\r\n default:\r\n element = angular.element('
    ');\r\n }\r\n return element;\r\n}\r\n\r\nclass Padding {\r\n constructor(template,rowHeight) {\r\n this.element = generateElement(template);\r\n this.cache = new Cache();\r\n this.cache.rowHeight = rowHeight;\r\n }\r\n\r\n height() {\r\n // When called wit a parameter, this sets the height of the padding\r\n return this.element.height.apply(this.element, arguments);\r\n }\r\n}\r\n\r\nexport default Padding;","import Padding from './padding';\r\n\r\nexport default function Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding, rowHeight) {\r\n let topPadding = null;\r\n let bottomPadding = null;\r\n const viewport = viewportController && viewportController.viewport ? viewportController.viewport : angular.element(window);\r\n const container = viewportController && viewportController.container ? viewportController.container : undefined;\r\n const scope = viewportController && viewportController.scope ? viewportController.scope : $rootScope;\r\n\r\n viewport.css({\r\n 'overflow-anchor': 'none',\r\n 'overflow-y': 'auto',\r\n 'display': 'block'\r\n });\r\n\r\n function bufferPadding() {\r\n return viewport.outerHeight() * padding; // some extra space to initiate preload\r\n }\r\n\r\n angular.extend(viewport, {\r\n getScope() {\r\n return scope;\r\n },\r\n\r\n createPaddingElements(template) {\r\n topPadding = new Padding(template,rowHeight);\r\n bottomPadding = new Padding(template,rowHeight);\r\n element.before(topPadding.element);\r\n element.after(bottomPadding.element);\r\n topPadding.height(0);\r\n bottomPadding.height(0);\r\n },\r\n\r\n applyContainerStyle() {\r\n if (!container) {\r\n return true;\r\n }\r\n if(container !== viewport) {\r\n viewport.css('height', window.getComputedStyle(container[0]).height);\r\n }\r\n return viewport.height() > 0;\r\n },\r\n\r\n bottomDataPos() {\r\n let scrollHeight = viewport[0].scrollHeight;\r\n scrollHeight = scrollHeight != null ? scrollHeight : viewport[0].document.documentElement.scrollHeight;\r\n return scrollHeight - bottomPadding.height();\r\n },\r\n\r\n topDataPos() {\r\n return topPadding.height();\r\n },\r\n\r\n bottomVisiblePos() {\r\n return viewport.scrollTop() + viewport.outerHeight();\r\n },\r\n\r\n topVisiblePos() {\r\n return viewport.scrollTop();\r\n },\r\n\r\n insertElement(e, sibling) {\r\n return elementRoutines.insertElement(e, sibling || topPadding.element);\r\n },\r\n\r\n insertElementAnimated(e, sibling) {\r\n return elementRoutines.insertElementAnimated(e, sibling || topPadding.element);\r\n },\r\n\r\n shouldLoadBottom() {\r\n return !buffer.eof && viewport.bottomDataPos() < viewport.bottomVisiblePos() + bufferPadding();\r\n },\r\n\r\n clipBottom() {\r\n // clip the invisible items off the bottom\r\n let overage = 0;\r\n let overageHeight = 0;\r\n let itemHeight = 0;\r\n let emptySpaceHeight = viewport.bottomDataPos() - viewport.bottomVisiblePos() - bufferPadding();\r\n\r\n // Simple calculation now using the fixed rowHeight if available.\r\n // Might be optimized if needed\r\n for (let i = buffer.length - 1; i >= 0; i--) {\r\n itemHeight = rowHeight ? rowHeight : buffer[i].element.outerHeight(true);\r\n if (overageHeight + itemHeight > emptySpaceHeight) {\r\n break;\r\n }\r\n bottomPadding.cache.add(buffer[i]);\r\n overageHeight += itemHeight;\r\n overage++;\r\n }\r\n\r\n if (overage > 0) {\r\n buffer.eof = false;\r\n buffer.remove(buffer.length - overage, buffer.length);\r\n buffer.next -= overage;\r\n viewport.adjustPaddings();\r\n }\r\n },\r\n\r\n shouldLoadTop() {\r\n return !buffer.bof && (viewport.topDataPos() > viewport.topVisiblePos() - bufferPadding());\r\n },\r\n\r\n clipTop() {\r\n // clip the invisible items off the top\r\n let overage = 0;\r\n let overageHeight = 0;\r\n let itemHeight = 0;\r\n let emptySpaceHeight = viewport.topVisiblePos() - viewport.topDataPos() - bufferPadding();\r\n\r\n // Simple calculation now using the fixed rowHeight if available.\r\n // Might be optimized if needed\r\n for (let i = 0; i < buffer.length; i++) {\r\n itemHeight = rowHeight ? rowHeight : buffer[i].element.outerHeight(true);\r\n if (overageHeight + itemHeight > emptySpaceHeight) {\r\n break;\r\n }\r\n topPadding.cache.add(buffer[i]);\r\n overageHeight += itemHeight;\r\n overage++;\r\n }\r\n\r\n if (overage > 0) {\r\n // we need to adjust top padding element before items are removed from top\r\n // to avoid strange behaviour of scroll bar during remove top items when we are at the very bottom\r\n topPadding.height(topPadding.height() + overageHeight);\r\n buffer.bof = false;\r\n buffer.remove(0, overage);\r\n buffer.first += overage;\r\n }\r\n },\r\n\r\n adjustPaddings() {\r\n if (!buffer.length) {\r\n return;\r\n }\r\n\r\n // precise heights calculation based on items that are in buffer or that were in buffer once\r\n // outerHeight(true) == [height+ padding + border + margin]\r\n // The calculation bellow can certainly be replaced by:\r\n // const visibleItemsHeight = rowHeight ? rowHeight * buffer.length\r\n // : buffer.reduce((summ, item) => summ + item.element.outerHeight(true), 0);\r\n const visibleItemsHeight = buffer.reduce((summ, item) => summ + (rowHeight ? rowHeight : item.element.outerHeight(true)), 0);\r\n\r\n // Sinlarly, the calculation of the paddings (top & bottom) can certanly be optimizez\r\n let topPaddingHeight = 0, topCount = 0;\r\n topPadding.cache.forEach(item => {\r\n if(item.index < buffer.first) {\r\n topPaddingHeight += item.height; // outerHeight(true) is actually stored in this data member\r\n topCount++;\r\n }\r\n });\r\n\r\n let bottomPaddingHeight = 0, bottomCount = 0;\r\n bottomPadding.cache.forEach(item => {\r\n if(item.index >= buffer.next) {\r\n bottomPaddingHeight += item.height; // outerHeight(true) is actually stored in this data member\r\n bottomCount++;\r\n }\r\n });\r\n\r\n const totalHeight = visibleItemsHeight + topPaddingHeight + bottomPaddingHeight;\r\n const averageItemHeight = totalHeight / (topCount + bottomCount + buffer.length);\r\n\r\n // average heights calculation, items that have never been reached\r\n let adjustTopPadding = buffer.minIndexUser !== null && buffer.minIndex > buffer.minIndexUser;\r\n let adjustBottomPadding = buffer.maxIndexUser !== null && buffer.maxIndex < buffer.maxIndexUser;\r\n let topPaddingHeightAdd = adjustTopPadding ? (buffer.minIndex - buffer.minIndexUser) * averageItemHeight : 0;\r\n let bottomPaddingHeightAdd = adjustBottomPadding ? (buffer.maxIndexUser - buffer.maxIndex) * averageItemHeight : 0;\r\n\r\n // paddings combine adjustment\r\n topPadding.height(topPaddingHeight + topPaddingHeightAdd);\r\n bottomPadding.height(bottomPaddingHeight + bottomPaddingHeightAdd);\r\n },\r\n\r\n onAfterMinIndexSet(topPaddingHeightOld) {\r\n // additional scrollTop adjustment in case of datasource.minIndex external set\r\n if (buffer.minIndexUser !== null && buffer.minIndex > buffer.minIndexUser) {\r\n let diff = topPadding.height() - topPaddingHeightOld;\r\n viewport.scrollTop(viewport.scrollTop() + diff);\r\n while((diff -= viewport.scrollTop()) > 0) {\r\n bottomPadding.height(bottomPadding.height() + diff);\r\n viewport.scrollTop(viewport.scrollTop() + diff);\r\n }\r\n }\r\n },\r\n\r\n onAfterPrepend(updates) {\r\n if (!updates.prepended.length)\r\n return;\r\n const height = buffer.effectiveHeight(updates.prepended);\r\n const paddingHeight = topPadding.height() - height;\r\n if (paddingHeight >= 0) {\r\n topPadding.height(paddingHeight);\r\n }\r\n else {\r\n topPadding.height(0);\r\n viewport.scrollTop(viewport.scrollTop() - paddingHeight);\r\n }\r\n },\r\n\r\n resetTopPadding() {\r\n topPadding.height(0);\r\n topPadding.cache.clear();\r\n },\r\n\r\n resetBottomPadding() {\r\n bottomPadding.height(0);\r\n bottomPadding.cache.clear();\r\n },\r\n\r\n removeCacheItem(item, isTop) {\r\n topPadding.cache.remove(item, isTop);\r\n bottomPadding.cache.remove(item, isTop);\r\n },\r\n\r\n removeItem(item) {\r\n this.removeCacheItem(item);\r\n return buffer.remove(item);\r\n }\r\n });\r\n\r\n return viewport;\r\n}\r\n","class Adapter {\r\n\r\n constructor($scope, $parse, $attr, viewport, buffer, doAdjust, reload) {\r\n this.$parse = $parse;\r\n this.$attr = $attr;\r\n this.viewport = viewport;\r\n this.buffer = buffer;\r\n\r\n this.doAdjust = doAdjust;\r\n this.reload = reload;\r\n\r\n this.isLoading = false;\r\n this.disabled = false;\r\n\r\n const viewportScope = viewport.getScope();\r\n this.startScope = viewportScope.$parent ? viewportScope : $scope;\r\n\r\n this.publicContext = {};\r\n this.assignAdapter($attr.adapter);\r\n this.generatePublicContext();\r\n }\r\n\r\n assignAdapter(adapterAttr) {\r\n if (!adapterAttr || !(adapterAttr = adapterAttr.replace(/^\\s+|\\s+$/gm, ''))) {\r\n return;\r\n }\r\n let adapterOnScope;\r\n\r\n try {\r\n this.$parse(adapterAttr).assign(this.startScope, {});\r\n adapterOnScope = this.$parse(adapterAttr)(this.startScope);\r\n }\r\n catch (error) {\r\n error.message = `Angular ui-scroll Adapter assignment exception.\\n` +\r\n `Can't parse \"${adapterAttr}\" expression.\\n` +\r\n error.message;\r\n throw error;\r\n }\r\n\r\n angular.extend(adapterOnScope, this.publicContext);\r\n this.publicContext = adapterOnScope;\r\n }\r\n\r\n generatePublicContext() {\r\n // these methods will be accessible out of ui-scroll via user defined adapter\r\n const publicMethods = ['reload', 'applyUpdates', 'append', 'prepend', 'isBOF', 'isEOF', 'isEmpty'];\r\n for (let i = publicMethods.length - 1; i >= 0; i--) {\r\n this.publicContext[publicMethods[i]] = this[publicMethods[i]].bind(this);\r\n }\r\n\r\n // these read-only props will be accessible out of ui-scroll via user defined adapter\r\n const publicProps = ['isLoading', 'topVisible', 'topVisibleElement', 'topVisibleScope', 'bottomVisible', 'bottomVisibleElement', 'bottomVisibleScope'];\r\n for (let i = publicProps.length - 1; i >= 0; i--) {\r\n let property, attr = this.$attr[publicProps[i]];\r\n Object.defineProperty(this, publicProps[i], {\r\n get: () => property,\r\n set: (value) => {\r\n property = value;\r\n this.publicContext[publicProps[i]] = value;\r\n if (attr) {\r\n this.$parse(attr).assign(this.startScope, value);\r\n }\r\n }\r\n });\r\n }\r\n\r\n // non-read-only public property\r\n Object.defineProperty(this.publicContext, 'disabled', {\r\n get: () => this.disabled,\r\n set: (value) => (!(this.disabled = value)) ? this.doAdjust() : null\r\n });\r\n }\r\n\r\n loading(value) {\r\n this.isLoading = value;\r\n }\r\n\r\n isBOF() {\r\n return this.buffer.bof;\r\n }\r\n\r\n isEOF() {\r\n return this.buffer.eof;\r\n }\r\n\r\n isEmpty() {\r\n return !this.buffer.length;\r\n }\r\n\r\n append(newItems) {\r\n this.buffer.append(newItems);\r\n this.doAdjust();\r\n this.viewport.clipTop();\r\n this.viewport.clipBottom();\r\n }\r\n\r\n prepend(newItems) {\r\n this.buffer.prepend(newItems);\r\n this.doAdjust();\r\n this.viewport.clipTop();\r\n this.viewport.clipBottom();\r\n }\r\n\r\n applyUpdates(arg1, arg2) {\r\n if (typeof arg1 === 'function') {\r\n this.applyUpdatesFunc(arg1);\r\n } else {\r\n this.applyUpdatesIndex(arg1, arg2);\r\n }\r\n this.doAdjust();\r\n }\r\n\r\n applyUpdatesFunc(cb) {\r\n this.buffer.slice(0).forEach((wrapper) => {\r\n // we need to do it on the buffer clone, because buffer content\r\n // may change as we iterate through\r\n this.applyUpdate(wrapper, cb(wrapper.item, wrapper.scope, wrapper.element));\r\n });\r\n }\r\n\r\n applyUpdatesIndex(index, newItems) {\r\n if (index % 1 !== 0) {\r\n throw new Error('applyUpdates - ' + index + ' is not a valid index (should be an integer)');\r\n }\r\n const _index = index - this.buffer.first;\r\n\r\n // apply updates only within buffer\r\n if (_index >= 0 && _index < this.buffer.length) {\r\n this.applyUpdate(this.buffer[_index], newItems);\r\n }\r\n // out-of-buffer case: deletion may affect Paddings\r\n else if(index >= this.buffer.getAbsMinIndex() && index <= this.buffer.getAbsMaxIndex()) {\r\n if(angular.isArray(newItems) && !newItems.length) {\r\n this.viewport.removeCacheItem(index, index === this.buffer.minIndex);\r\n if(index === this.buffer.getAbsMinIndex()) {\r\n this.buffer.incrementMinIndex();\r\n }\r\n else {\r\n this.buffer.decrementMaxIndex();\r\n }\r\n }\r\n }\r\n }\r\n\r\n applyUpdate(wrapper, newItems) {\r\n if (!angular.isArray(newItems)) {\r\n return;\r\n }\r\n let position = this.buffer.indexOf(wrapper);\r\n if (!newItems.reverse().some(newItem => newItem === wrapper.item)) {\r\n wrapper.op = 'remove';\r\n if(position === 0 && !newItems.length) {\r\n wrapper._op = 'isTop'; // to catch \"first\" edge case on remove\r\n }\r\n }\r\n newItems.forEach((newItem) => {\r\n if (newItem === wrapper.item) {\r\n position--;\r\n } else {\r\n // 3 parameter (isTop) is to catch \"first\" edge case on insert\r\n this.buffer.insert(position + 1, newItem, position === -1);\r\n }\r\n });\r\n }\r\n\r\n calculateProperties() {\r\n let rowTop = null, topHeight = 0;\r\n let topDone = false, bottomDone = false;\r\n const length = this.buffer.length;\r\n\r\n for (let i = 0; i < length; i++) {\r\n const item = this.buffer[i];\r\n const itemTop = item.element.offset().top;\r\n\r\n if (rowTop !== itemTop) { // a new row condition\r\n const itemHeight = item.element.outerHeight(true);\r\n const top = this.viewport.topDataPos() + topHeight + itemHeight;\r\n\r\n if (!topDone && top > this.viewport.topVisiblePos()) {\r\n topDone = true;\r\n this['topVisible'] = item.item;\r\n this['topVisibleElement'] = item.element;\r\n this['topVisibleScope'] = item.scope;\r\n }\r\n if (!bottomDone && (top >= this.viewport.bottomVisiblePos() || (i === length - 1 && this.isEOF()))) {\r\n bottomDone = true;\r\n this['bottomVisible'] = item.item;\r\n this['bottomVisibleElement'] = item.element;\r\n this['bottomVisibleScope'] = item.scope;\r\n }\r\n topHeight += itemHeight;\r\n }\r\n rowTop = itemTop;\r\n\r\n if (topDone && bottomDone) {\r\n break;\r\n }\r\n }\r\n }\r\n\r\n}\r\n\r\nexport default Adapter;\r\n","import JQLiteExtras from './modules/jqLiteExtras';\nimport ElementRoutines from './modules/elementRoutines.js';\nimport ScrollBuffer from './modules/buffer.js';\nimport Viewport from './modules/viewport.js';\nimport Adapter from './modules/adapter.js';\n\nangular.module('ui.scroll', [])\n\n .constant('JQLiteExtras', JQLiteExtras)\n .run(['JQLiteExtras', (JQLiteExtras) => {\n !window.jQuery ? (new JQLiteExtras()).registerFor(angular.element) : null;\n ElementRoutines.addCSSRules();\n }])\n\n .directive('uiScrollViewport', function () {\n return {\n restrict: 'A',\n controller: [\n '$scope',\n '$element',\n function (scope, element) {\n this.container = element;\n this.viewport = element;\n this.scope = scope;\n\n angular.forEach(element.children(), child => {\n if (child.tagName.toLowerCase() === 'tbody') {\n this.viewport = angular.element(child);\n }\n });\n\n return this;\n }\n ]\n };\n })\n\n .directive('uiScroll', [\n '$log',\n '$injector',\n '$rootScope',\n '$timeout',\n '$interval',\n '$q',\n '$parse',\n function (console, $injector, $rootScope, $timeout, $interval, $q, $parse) {\n\n return {\n require: ['?^uiScrollViewport'],\n restrict: 'A',\n transclude: 'element',\n priority: 1000,\n terminal: true,\n link: link\n };\n\n function link($scope, element, $attr, controllers, linker) {\n const match = $attr.uiScroll.match(/^\\s*(\\w+)\\s+in\\s+([(\\w|\\$)\\.]+)\\s*$/);\n if (!match) {\n throw new Error('Expected uiScroll in form of \\'_item_ in _datasource_\\' but got \\'' + $attr.uiScroll + '\\'');\n }\n\n function parseNumber(value, defaultValue, isFloat) {\n if (!isFloat) {\n value = value === null ? defaultValue : Math.floor(value);\n }\n return isNaN(value) ? defaultValue : value;\n }\n\n function parseNumericAttr(value, defaultValue, isFloat) {\n const result = $parse(value)($scope);\n return parseNumber(result, defaultValue, isFloat);\n }\n\n const BUFFER_MIN = 3; // Minimum size of the data source request\n const BUFFER_DEFAULT = 10; // Default datasource request size\n const PADDING_MIN = 0.3; // Mininum # of rows in the padding area\n const PADDING_DEFAULT = 0.5; // Default # of rows in the padding area\n const START_INDEX_DEFAULT = 1; // Default start index when requestng the first data block\n const MAX_VIEWPORT_DELAY = 500; // Max time wait (ms) to get the viewport with an height>0\n const VIEWPORT_POLLING_INTERVAL = 50; // Interval used to check the initial viewport height\n\n let datasource = null;\n const itemName = match[1]; // Name of the index variable to publish\n const datasourceName = match[2]; // Name of the datasource to request the rows from\n const viewportController = controllers[0]; // ViewportController, as specified in the require option (http://websystique.com/angularjs/angularjs-custom-directives-controllers-require-option-guide/)\n const bufferSize = Math.max(BUFFER_MIN, parseNumericAttr($attr.bufferSize, BUFFER_DEFAULT)); \n const padding = Math.max(PADDING_MIN, parseNumericAttr($attr.padding, PADDING_DEFAULT, true));\n let startIndex = parseNumericAttr($attr.startIndex, START_INDEX_DEFAULT);\n\n // PHIL: Provide a fixed row height\n // \n const rowHeight = parseNumericAttr($attr.rowheight,null,false);\n\n // Revision IDs\n // \n let ridActual = 0; // current data revision id\n let pending = [];\n\n const elementRoutines = new ElementRoutines($injector, $q);\n const buffer = new ScrollBuffer(elementRoutines, bufferSize, startIndex);\n const viewport = new Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding, rowHeight);\n const adapter = new Adapter($scope, $parse, $attr, viewport, buffer, doAdjust, reload);\n\n if (viewportController) {\n viewportController.adapter = adapter;\n }\n\n const isDatasourceValid = () =>\n Object.prototype.toString.call(datasource) === '[object Object]' && typeof datasource.get === 'function';\n\n datasource = $parse(datasourceName)($scope); // try to get datasource on scope\n if (!isDatasourceValid()) {\n datasource = $injector.get(datasourceName); // try to inject datasource as service\n if (!isDatasourceValid()) {\n throw new Error(datasourceName + ' is not a valid datasource');\n }\n }\n\n let onRenderHandlers = [];\n function onRenderHandlersRunner() {\n onRenderHandlers.forEach(handler => handler.run());\n onRenderHandlers = [];\n }\n function persistDatasourceIndex(datasource, propName) {\n let getter;\n // need to postpone min/maxIndexUser processing if the view is empty\n if(angular.isNumber(datasource[propName])) {\n getter = datasource[propName];\n if(angular.isNumber(getter)) {\n onRenderHandlers = onRenderHandlers.filter(handler => handler.id !== propName);\n onRenderHandlers.push({\n id: propName,\n run: () => datasource[propName] = getter\n });\n }\n }\n }\n\n function defineDatasourceIndex(datasource, propName, propUserName) {\n const descriptor = Object.getOwnPropertyDescriptor(datasource, propName);\n if (descriptor && (descriptor.set || descriptor.get)) {\n return;\n }\n let getter;\n persistDatasourceIndex(datasource, propName);\n Object.defineProperty(datasource, propName, {\n set: (value) => {\n getter = value;\n if(pending.length && !buffer.length) {\n persistDatasourceIndex(datasource, propName);\n return;\n }\n buffer[propUserName] = value;\n const topPaddingHeightOld = viewport.topDataPos();\n viewport.adjustPaddings();\n if (propName === 'minIndex') {\n viewport.onAfterMinIndexSet(topPaddingHeightOld);\n }\n },\n get: () => getter\n });\n }\n\n defineDatasourceIndex(datasource, 'minIndex', 'minIndexUser');\n defineDatasourceIndex(datasource, 'maxIndex', 'maxIndexUser');\n\n const fetchNext = (datasource.get.length !== 2) ?\n (success) => datasource.get(buffer.next, bufferSize, success) :\n (success) => {\n datasource.get({\n index: buffer.next,\n append: buffer.length ? buffer[buffer.length - 1].item : void 0,\n count: bufferSize\n }, success);\n };\n\n const fetchPrevious = (datasource.get.length !== 2) ?\n (success) => datasource.get(buffer.first - bufferSize, bufferSize, success) :\n (success) => {\n datasource.get({\n index: buffer.first - bufferSize,\n prepend: buffer.length ? buffer[0].item : void 0,\n count: bufferSize\n }, success);\n };\n\n const initialize = () => {\n let tryCount = 0;\n if(!viewport.applyContainerStyle()) {\n const timer = $interval(() => {\n tryCount++;\n if(viewport.applyContainerStyle()) {\n $interval.cancel(timer);\n doAdjust();\n }\n if(tryCount * VIEWPORT_POLLING_INTERVAL >= MAX_VIEWPORT_DELAY) {\n $interval.cancel(timer);\n throw Error(`ui-scroll directive requires a viewport with non-zero height in ${MAX_VIEWPORT_DELAY}ms`);\n }\n }, VIEWPORT_POLLING_INTERVAL);\n }\n else {\n doAdjust();\n }\n };\n\n /**\n * Build padding elements\n *\n * Calling linker is the only way I found to get access to the tag name of the template\n * to prevent the directive scope from pollution a new scope is created and destroyed\n * right after the builder creation is completed\n */\n linker((clone, scope) => {\n viewport.createPaddingElements(clone[0]);\n // we do not include the clone in the DOM. It means that the nested directives will not\n // be able to reach the parent directives, but in this case it is intentional because we\n // created the clone to access the template tag name\n scope.$destroy();\n clone.remove();\n });\n\n $scope.$on('$destroy', () => {\n unbindEvents();\n viewport.unbind('mousewheel', wheelHandler);\n });\n\n viewport.bind('mousewheel', wheelHandler);\n\n initialize();\n\n /* Private function definitions */\n\n function isInvalid(rid) {\n return (rid && rid !== ridActual) || $scope.$$destroyed;\n }\n\n function bindEvents() {\n viewport.bind('resize', resizeAndScrollHandler);\n viewport.bind('scroll', resizeAndScrollHandler);\n }\n\n function unbindEvents() {\n viewport.unbind('resize', resizeAndScrollHandler);\n viewport.unbind('scroll', resizeAndScrollHandler);\n }\n\n function reload() {\n viewport.resetTopPadding();\n viewport.resetBottomPadding();\n if (arguments.length) {\n startIndex = parseNumber(arguments[0], START_INDEX_DEFAULT, false);\n }\n buffer.reset(startIndex);\n persistDatasourceIndex(datasource, 'minIndex');\n persistDatasourceIndex(datasource, 'maxIndex');\n doAdjust();\n }\n\n function isElementVisible(wrapper) {\n if(rowHeight) {\n return true;\n }\n return wrapper.element.height() && wrapper.element[0].offsetParent;\n }\n\n function visibilityWatcher(wrapper) {\n if (isElementVisible(wrapper)) {\n buffer.forEach((item) => {\n if (typeof item.unregisterVisibilityWatcher === 'function') {\n item.unregisterVisibilityWatcher();\n delete item.unregisterVisibilityWatcher;\n }\n });\n if (!pending.length) {\n $timeout(() => doAdjust());\n }\n }\n }\n\n function insertWrapperContent(wrapper, insertAfter) {\n createElement(wrapper, insertAfter, viewport.insertElement);\n if (!isElementVisible(wrapper)) {\n wrapper.unregisterVisibilityWatcher = wrapper.scope.$watch(() => visibilityWatcher(wrapper));\n }\n elementRoutines.hideElement(wrapper); // hide inserted elements before data binding\n }\n\n function createElement(wrapper, insertAfter, insertElement) {\n let promises = null;\n const sibling = (insertAfter > 0) ? buffer[insertAfter - 1].element : undefined;\n linker((clone, scope) => {\n promises = insertElement(clone, sibling);\n wrapper.element = clone;\n wrapper.scope = scope;\n scope[itemName] = wrapper.item;\n });\n // ui-scroll-grid apply\n if (adapter.transform) {\n const tdInitializer = wrapper.scope.uiScrollTdInitializer;\n if (tdInitializer && tdInitializer.linking) {\n adapter.transform(wrapper.scope, wrapper.element);\n } else {\n wrapper.scope.uiScrollTdInitializer = {\n onLink: () => adapter.transform(wrapper.scope, wrapper.element),\n scope: wrapper.scope\n };\n }\n }\n return promises;\n }\n\n function updateDOM() {\n let promises = [];\n const toBePrepended = [];\n const toBeRemoved = [];\n const inserted = [];\n\n buffer.forEach((wrapper, i) => {\n switch (wrapper.op) {\n case 'prepend':\n toBePrepended.unshift(wrapper);\n break;\n case 'append':\n insertWrapperContent(wrapper, i);\n wrapper.op = 'none';\n inserted.push(wrapper);\n break;\n case 'insert':\n promises = promises.concat(createElement(wrapper, i, viewport.insertElementAnimated));\n wrapper.op = 'none';\n inserted.push(wrapper);\n break;\n case 'remove':\n toBeRemoved.push(wrapper);\n }\n });\n\n toBeRemoved.forEach((wrapper) => promises = promises.concat(viewport.removeItem(wrapper)));\n\n if (toBePrepended.length)\n toBePrepended.forEach((wrapper) => {\n insertWrapperContent(wrapper);\n wrapper.op = 'none';\n });\n\n buffer.forEach((item, i) => item.scope.$index = buffer.first + i);\n\n return {\n prepended: toBePrepended,\n removed: toBeRemoved,\n inserted: inserted,\n animated: promises\n };\n\n }\n\n // Adjust the viewport paddings\n // \n function updatePaddings(rid, updates) {\n // schedule another doAdjust after animation completion\n if (updates.animated.length) {\n $q.all(updates.animated).then(() => {\n viewport.adjustPaddings();\n doAdjust(rid);\n });\n } else {\n viewport.adjustPaddings();\n }\n }\n\n function enqueueFetch(rid, updates) {\n if (viewport.shouldLoadBottom()) {\n if (!updates || buffer.effectiveHeight(updates.inserted) > 0) {\n // this means that at least one item appended in the last batch has height > 0\n if (pending.push(true) === 1) {\n adapter.loading(true);\n fetch(rid);\n }\n }\n } else if (viewport.shouldLoadTop()) {\n if ((!updates || buffer.effectiveHeight(updates.prepended) > 0) || pending[0]) {\n // this means that at least one item appended in the last batch has height > 0\n // pending[0] = true means that previous fetch was appending. We need to force at least one prepend\n // BTW there will always be at least 1 element in the pending array because bottom is fetched first\n if (pending.push(false) === 1) {\n adapter.loading(true);\n fetch(rid);\n }\n }\n }\n }\n\n function processUpdates() {\n const updates = updateDOM();\n\n // We need the item bindings to be processed before we can do adjustments\n if(!rowHeight) {\n !$scope.$$phase && !$rootScope.$$phase && $scope.$digest();\n }\n \n updates.inserted.forEach(w => elementRoutines.showElement(w));\n updates.prepended.forEach(w => elementRoutines.showElement(w));\n return updates;\n }\n\n function doAdjust(rid) {\n if (!rid) { // dismiss pending requests\n pending = [];\n rid = ++ridActual;\n }\n\n const updates = processUpdates();\n\n if (isInvalid(rid)) {\n return;\n }\n\n updatePaddings(rid, updates);\n enqueueFetch(rid);\n\n if (!pending.length) {\n adapter.calculateProperties();\n }\n }\n\n function doAdjustAfterFetch(rid) {\n const updates = processUpdates();\n\n viewport.onAfterPrepend(updates);\n\n if (isInvalid(rid)) {\n return;\n }\n\n updatePaddings(rid, updates);\n onRenderHandlersRunner();\n enqueueFetch(rid, updates);\n pending.shift();\n\n if (pending.length)\n fetch(rid);\n else {\n adapter.loading(false);\n bindEvents();\n adapter.calculateProperties();\n }\n }\n\n function fetch(rid) {\n if (pending[0]) {// scrolling down\n if (buffer.length && !viewport.shouldLoadBottom()) {\n doAdjustAfterFetch(rid);\n } else {\n fetchNext((result) => {\n if (isInvalid(rid)) {\n return;\n }\n\n if (result.length < bufferSize) {\n buffer.eof = true;\n }\n\n if (result.length > 0) {\n viewport.clipTop();\n buffer.append(result);\n }\n\n doAdjustAfterFetch(rid);\n });\n }\n } else { // scrolling up\n if (buffer.length && !viewport.shouldLoadTop()) {\n doAdjustAfterFetch(rid);\n } else {\n fetchPrevious((result) => {\n if (isInvalid(rid)) {\n return;\n }\n\n if (result.length < bufferSize) {\n buffer.bof = true;\n // log 'bof is 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\t\t__webpack_require__.r(ns);\n \t\tObject.defineProperty(ns, 'default', { enumerable: true, value: value });\n \t\tif(mode & 2 && typeof value != 'string') for(var key in value) __webpack_require__.d(ns, key, function(key) { return value[key]; }.bind(null, key));\n \t\treturn ns;\n \t};\n\n \t// getDefaultExport function for compatibility with non-harmony modules\n \t__webpack_require__.n = function(module) {\n \t\tvar getter = module && module.__esModule ?\n \t\t\tfunction getDefault() { return module['default']; } :\n \t\t\tfunction getModuleExports() { return module; };\n \t\t__webpack_require__.d(getter, 'a', getter);\n \t\treturn getter;\n \t};\n\n \t// Object.prototype.hasOwnProperty.call\n \t__webpack_require__.o = function(object, property) { return Object.prototype.hasOwnProperty.call(object, property); };\n\n \t// __webpack_public_path__\n \t__webpack_require__.p = \"\";\n\n\n \t// Load entry module and return exports\n \treturn __webpack_require__(__webpack_require__.s = 1);\n","/*!\r\n globals: angular, window\r\n List of used element methods available in JQuery but not in JQuery Lite\r\n element.before(elem)\r\n element.height()\r\n element.outerHeight(true)\r\n element.height(value) = only for Top/Bottom padding elements\r\n element.scrollTop()\r\n element.scrollTop(value)\r\n */\r\n\r\nexport default class JQLiteExtras {\r\n\r\n registerFor(element) {\r\n let convertToPx, css, getStyle, isWindow;\r\n // angular implementation blows up if elem is the window\r\n css = angular.element.prototype.css;\r\n\r\n element.prototype.css = function (name, value) {\r\n let self = this;\r\n let elem = self[0];\r\n if (!(!elem || elem.nodeType === 3 || elem.nodeType === 8 || !elem.style)) {\r\n return css.call(self, name, value);\r\n }\r\n };\r\n\r\n // as defined in angularjs v1.0.5\r\n isWindow = (obj) => obj && obj.document && obj.location && obj.alert && obj.setInterval;\r\n\r\n function scrollTo(self, direction, value) {\r\n let elem = self[0];\r\n let [method, prop, preserve] = {\r\n top: [\r\n 'scrollTop',\r\n 'pageYOffset',\r\n 'scrollLeft'\r\n ],\r\n left: [\r\n 'scrollLeft',\r\n 'pageXOffset',\r\n 'scrollTop'\r\n ]\r\n }[direction];\r\n\r\n const isValueDefined = typeof value !== 'undefined';\r\n if (isWindow(elem)) {\r\n if (isValueDefined) {\r\n return elem.scrollTo(self[preserve].call(self), value);\r\n }\r\n return (prop in elem) ? elem[prop] : elem.document.documentElement[method];\r\n } else {\r\n if (isValueDefined) {\r\n elem[method] = value;\r\n }\r\n return elem[method];\r\n }\r\n }\r\n\r\n if (window.getComputedStyle) {\r\n getStyle = (elem) => window.getComputedStyle(elem, null);\r\n convertToPx = (elem, value) => parseFloat(value);\r\n } else {\r\n getStyle = (elem) => elem.currentStyle;\r\n convertToPx = (elem, value) => {\r\n let left, result, rs, rsLeft, style;\r\n let core_pnum = /[+-]?(?:\\d*\\.|)\\d+(?:[eE][+-]?\\d+|)/.source;\r\n let rnumnonpx = new RegExp('^(' + core_pnum + ')(?!px)[a-z%]+$', 'i');\r\n\r\n if (!rnumnonpx.test(value)) {\r\n return parseFloat(value);\r\n }\r\n\r\n // ported from JQuery\r\n style = elem.style;\r\n left = style.left;\r\n rs = elem.runtimeStyle;\r\n rsLeft = rs && rs.left;\r\n if (rs) {\r\n rs.left = style.left;\r\n }\r\n // put in the new values to get a computed style out\r\n style.left = value;\r\n result = style.pixelLeft;\r\n style.left = left;\r\n if (rsLeft) {\r\n rs.left = rsLeft;\r\n }\r\n return result;\r\n };\r\n }\r\n\r\n function getMeasurements(elem, measure) {\r\n let base, borderA, borderB, computedMarginA, computedMarginB, computedStyle, dirA, dirB, marginA, marginB, paddingA, paddingB;\r\n\r\n if (isWindow(elem)) {\r\n base = document.documentElement[{height: 'clientHeight', width: 'clientWidth'}[measure]];\r\n\r\n return {\r\n base: base,\r\n padding: 0,\r\n border: 0,\r\n margin: 0\r\n };\r\n }\r\n\r\n // Start with offset property\r\n [\r\n base,\r\n dirA,\r\n dirB\r\n ] = {\r\n width: [\r\n elem.offsetWidth,\r\n 'Left',\r\n 'Right'\r\n ],\r\n height: [\r\n elem.offsetHeight,\r\n 'Top',\r\n 'Bottom'\r\n ]\r\n }[measure];\r\n\r\n computedStyle = getStyle(elem);\r\n paddingA = convertToPx(elem, computedStyle['padding' + dirA]) || 0;\r\n paddingB = convertToPx(elem, computedStyle['padding' + dirB]) || 0;\r\n borderA = convertToPx(elem, computedStyle['border' + dirA + 'Width']) || 0;\r\n borderB = convertToPx(elem, computedStyle['border' + dirB + 'Width']) || 0;\r\n computedMarginA = computedStyle['margin' + dirA];\r\n computedMarginB = computedStyle['margin' + dirB];\r\n\r\n // I do not care for width for now, so this hack is irrelevant\r\n // if ( !supportsPercentMargin )\r\n // computedMarginA = hackPercentMargin( elem, computedStyle, computedMarginA )\r\n // computedMarginB = hackPercentMargin( elem, computedStyle, computedMarginB )\r\n marginA = convertToPx(elem, computedMarginA) || 0;\r\n marginB = convertToPx(elem, computedMarginB) || 0;\r\n\r\n return {\r\n base: base,\r\n padding: paddingA + paddingB,\r\n border: borderA + borderB,\r\n margin: marginA + marginB\r\n };\r\n }\r\n\r\n function getWidthHeight(elem, direction, measure) {\r\n let computedStyle, result;\r\n\r\n let measurements = getMeasurements(elem, direction);\r\n\r\n if (measurements.base > 0) {\r\n return {\r\n base: measurements.base - measurements.padding - measurements.border,\r\n outer: measurements.base,\r\n outerfull: measurements.base + measurements.margin\r\n }[measure];\r\n }\r\n\r\n // Fall back to computed then uncomputed css if necessary\r\n computedStyle = getStyle(elem);\r\n result = computedStyle[direction];\r\n\r\n if (result < 0 || result === null) {\r\n result = elem.style[direction] || 0;\r\n }\r\n\r\n // Normalize \"\", auto, and prepare for extra\r\n result = parseFloat(result) || 0;\r\n\r\n return {\r\n base: result - measurements.padding - measurements.border,\r\n outer: result,\r\n outerfull: result + measurements.padding + measurements.border + measurements.margin\r\n }[measure];\r\n }\r\n\r\n // define missing methods\r\n return angular.forEach({\r\n before(newElem) {\r\n var children, elem, i, j, parent, ref, self;\r\n self = this;\r\n elem = self[0];\r\n parent = self.parent();\r\n children = parent.contents();\r\n if (children[0] === elem) {\r\n return parent.prepend(newElem);\r\n } else {\r\n for (i = j = 1, ref = children.length - 1; 1 <= ref ? j <= ref : j >= ref; i = 1 <= ref ? ++j : --j) {\r\n if (children[i] === elem) {\r\n angular.element(children[i - 1]).after(newElem);\r\n return;\r\n }\r\n }\r\n throw new Error('invalid DOM structure ' + elem.outerHTML);\r\n }\r\n },\r\n height (value){\r\n var self;\r\n self = this;\r\n if (typeof value !== 'undefined') {\r\n if (angular.isNumber(value)) {\r\n value = value + 'px';\r\n }\r\n return css.call(self, 'height', value);\r\n } else {\r\n return getWidthHeight(this[0], 'height', 'base');\r\n }\r\n },\r\n outerHeight(option) {\r\n return getWidthHeight(this[0], 'height', option ? 'outerfull' : 'outer');\r\n },\r\n outerWidth(option) {\r\n return getWidthHeight(this[0], 'width', option ? 'outerfull' : 'outer');\r\n },\r\n\r\n /*\r\n The offset setter method is not implemented\r\n */\r\n offset(value) {\r\n let docElem, win;\r\n let self = this;\r\n let box = {\r\n top: 0,\r\n left: 0\r\n };\r\n let elem = self[0];\r\n let doc = elem && elem.ownerDocument;\r\n\r\n if (arguments.length) {\r\n if (value === undefined) {\r\n return self;\r\n }\r\n // TODO: implement setter\r\n throw new Error('offset setter method is not implemented');\r\n }\r\n\r\n if (!doc) {\r\n return;\r\n }\r\n\r\n docElem = doc.documentElement;\r\n\r\n // TODO: Make sure it's not a disconnected DOM node\r\n\r\n if (elem.getBoundingClientRect != null) {\r\n box = elem.getBoundingClientRect();\r\n }\r\n\r\n win = doc.defaultView || doc.parentWindow;\r\n\r\n return {\r\n top: box.top + (win.pageYOffset || docElem.scrollTop) - (docElem.clientTop || 0),\r\n left: box.left + (win.pageXOffset || docElem.scrollLeft) - (docElem.clientLeft || 0)\r\n };\r\n },\r\n scrollTop(value) {\r\n return scrollTo(this, 'top', value);\r\n },\r\n scrollLeft(value) {\r\n return scrollTo(this, 'left', value);\r\n }\r\n }, (value, key) => {\r\n if (!element.prototype[key]) {\r\n return element.prototype[key] = value;\r\n }\r\n });\r\n }\r\n\r\n}\r\n","const hideClassToken = 'ng-ui-scroll-hide';\r\n\r\nexport default class ElementRoutines {\r\n\r\n static addCSSRules() {\r\n const selector = '.' + hideClassToken;\r\n const rules = 'display: none';\r\n const sheet = document.styleSheets[0];\r\n let index;\r\n try {\r\n index = sheet.cssRules.length;\r\n } catch (err) {\r\n index = 0;\r\n }\r\n if('insertRule' in sheet) {\r\n sheet.insertRule(selector + '{' + rules + '}', index);\r\n }\r\n else if('addRule' in sheet) {\r\n sheet.addRule(selector, rules, index);\r\n }\r\n }\r\n\r\n constructor($injector, $q) {\r\n this.$animate = ($injector.has && $injector.has('$animate')) ? $injector.get('$animate') : null;\r\n this.isAngularVersionLessThen1_3 = angular.version.major === 1 && angular.version.minor < 3;\r\n this.$q = $q;\r\n }\r\n\r\n hideElement(wrapper) {\r\n wrapper.element.addClass(hideClassToken);\r\n }\r\n\r\n showElement(wrapper) {\r\n wrapper.element.removeClass(hideClassToken);\r\n }\r\n\r\n insertElement(newElement, previousElement) {\r\n previousElement.after(newElement);\r\n return [];\r\n }\r\n\r\n removeElement(wrapper) {\r\n wrapper.element.remove();\r\n wrapper.scope.$destroy();\r\n return [];\r\n }\r\n\r\n insertElementAnimated(newElement, previousElement) {\r\n if (!this.$animate) {\r\n return this.insertElement(newElement, previousElement);\r\n }\r\n\r\n if (this.isAngularVersionLessThen1_3) {\r\n const deferred = this.$q.defer();\r\n // no need for parent - previous element is never null\r\n this.$animate.enter(newElement, null, previousElement, () => deferred.resolve());\r\n\r\n return [deferred.promise];\r\n }\r\n\r\n // no need for parent - previous element is never null\r\n return [this.$animate.enter(newElement, null, previousElement)];\r\n }\r\n\r\n removeElementAnimated(wrapper) {\r\n if (!this.$animate) {\r\n return this.removeElement(wrapper);\r\n }\r\n\r\n if (this.isAngularVersionLessThen1_3) {\r\n const deferred = this.$q.defer();\r\n this.$animate.leave(wrapper.element, () => {\r\n wrapper.scope.$destroy();\r\n return deferred.resolve();\r\n });\r\n\r\n return [deferred.promise];\r\n }\r\n\r\n return [(this.$animate.leave(wrapper.element)).then(() => wrapper.scope.$destroy())];\r\n }\r\n}","export default function ScrollBuffer(elementRoutines, bufferSize, startIndex) {\r\n const buffer = Object.create(Array.prototype);\r\n\r\n angular.extend(buffer, {\r\n size: bufferSize,\r\n\r\n reset(startIndex) {\r\n buffer.remove(0, buffer.length);\r\n buffer.eof = false;\r\n buffer.bof = false;\r\n buffer.first = startIndex;\r\n buffer.next = startIndex;\r\n buffer.minIndex = startIndex;\r\n buffer.maxIndex = startIndex;\r\n buffer.minIndexUser = null;\r\n buffer.maxIndexUser = null;\r\n },\r\n\r\n append(items) {\r\n items.forEach((item) => {\r\n ++buffer.next;\r\n buffer.insert('append', item);\r\n });\r\n buffer.maxIndex = buffer.eof ? buffer.next - 1 : Math.max(buffer.next - 1, buffer.maxIndex);\r\n },\r\n\r\n prepend(items) {\r\n items.reverse().forEach((item) => {\r\n --buffer.first;\r\n buffer.insert('prepend', item);\r\n });\r\n buffer.minIndex = buffer.bof ? buffer.minIndex = buffer.first : Math.min(buffer.first, buffer.minIndex);\r\n },\r\n\r\n /**\r\n * inserts wrapped element in the buffer\r\n * the first argument is either operation keyword (see below) or a number for operation 'insert'\r\n * for insert the number is the index for the buffer element the new one have to be inserted after\r\n * operations: 'append', 'prepend', 'insert', 'remove', 'update', 'none'\r\n */\r\n insert(operation, item, isTop) {\r\n const wrapper = {\r\n item: item\r\n };\r\n\r\n if (operation % 1 === 0) {// it is an insert\r\n wrapper.op = 'insert';\r\n buffer.splice(operation, 0, wrapper);\r\n if(isTop) {\r\n buffer.first--;\r\n }\r\n else {\r\n buffer.next++;\r\n }\r\n } else {\r\n wrapper.op = operation;\r\n switch (operation) {\r\n case 'append':\r\n buffer.push(wrapper);\r\n break;\r\n case 'prepend':\r\n buffer.unshift(wrapper);\r\n break;\r\n }\r\n }\r\n },\r\n\r\n // removes elements from buffer\r\n remove(arg1, arg2) {\r\n if (angular.isNumber(arg1)) {\r\n // removes items from arg1 (including) through arg2 (excluding)\r\n for (let i = arg1; i < arg2; i++) {\r\n elementRoutines.removeElement(buffer[i]);\r\n }\r\n return buffer.splice(arg1, arg2 - arg1);\r\n }\r\n // removes single item(wrapper) from the buffer\r\n buffer.splice(buffer.indexOf(arg1), 1);\r\n if(arg1._op === 'isTop' && buffer.first === this.getAbsMinIndex()) {\r\n this.incrementMinIndex();\r\n }\r\n else {\r\n this.decrementMaxIndex();\r\n }\r\n if(arg1._op === 'isTop') {\r\n buffer.first++;\r\n }\r\n else {\r\n buffer.next--;\r\n }\r\n if(!buffer.length) {\r\n buffer.first = 1;\r\n buffer.next = 1;\r\n }\r\n\r\n return elementRoutines.removeElementAnimated(arg1);\r\n },\r\n\r\n incrementMinIndex() {\r\n if(buffer.minIndexUser !== null) {\r\n if(buffer.minIndex > buffer.minIndexUser) {\r\n buffer.minIndexUser++;\r\n return;\r\n }\r\n if(buffer.minIndex === buffer.minIndexUser) {\r\n buffer.minIndexUser++;\r\n }\r\n }\r\n buffer.minIndex++;\r\n },\r\n\r\n decrementMaxIndex() {\r\n if(buffer.maxIndexUser !== null && buffer.maxIndex <= buffer.maxIndexUser) {\r\n buffer.maxIndexUser--;\r\n }\r\n buffer.maxIndex--;\r\n },\r\n\r\n getAbsMinIndex() {\r\n if(buffer.minIndexUser !== null) {\r\n return Math.min(buffer.minIndexUser, buffer.minIndex);\r\n }\r\n return buffer.minIndex;\r\n },\r\n\r\n getAbsMaxIndex() {\r\n if(buffer.maxIndexUser !== null) {\r\n return Math.max(buffer.maxIndexUser, buffer.maxIndex);\r\n }\r\n return buffer.maxIndex;\r\n },\r\n\r\n effectiveHeight(elements) {\r\n if (!elements.length) {\r\n return 0;\r\n }\r\n let top = Number.MAX_VALUE;\r\n let bottom = Number.NEGATIVE_INFINITY;\r\n elements.forEach((wrapper) => {\r\n if (wrapper.element[0].offsetParent) {\r\n // element style is not display:none\r\n top = Math.min(top, wrapper.element.offset().top);\r\n bottom = Math.max(bottom, wrapper.element.offset().top + wrapper.element.outerHeight(true));\r\n }\r\n });\r\n return Math.max(0, bottom - top);\r\n }\r\n\r\n });\r\n\r\n buffer.reset(startIndex);\r\n\r\n return buffer;\r\n}\r\n","// Can't just extend the Array, due to Babel does not support built-in classes extending\r\n// This solution was taken from https://stackoverflow.com/questions/46897414/es6-class-extends-array-workaround-for-es5-babel-transpile\r\nclass CacheProto {\r\n add(item) {\r\n for (let i = this.length - 1; i >= 0; i--) {\r\n if (this[i].index === item.scope.$index) {\r\n this[i].height = this.rowHeight || item.element.outerHeight();\r\n return;\r\n }\r\n }\r\n this.push({\r\n index: item.scope.$index,\r\n height: this.rowHeight || item.element.outerHeight()\r\n });\r\n this.sort((a, b) => ((a.index < b.index) ? -1 : ((a.index > b.index) ? 1 : 0)));\r\n }\r\n\r\n remove(argument, _isTop) {\r\n const index = argument % 1 === 0 ? argument : argument.scope.$index;\r\n const isTop = argument % 1 === 0 ? _isTop : argument._op === 'isTop';\r\n for (let i = this.length - 1; i >= 0; i--) {\r\n if (this[i].index === index) {\r\n this.splice(i, 1);\r\n break;\r\n }\r\n }\r\n if(!isTop) {\r\n for (let i = this.length - 1; i >= 0; i--) {\r\n if (this[i].index > index) {\r\n this[i].index--;\r\n }\r\n }\r\n }\r\n }\r\n\r\n clear() {\r\n this.length = 0;\r\n }\r\n}\r\n\r\nfunction Cache() {\r\n const instance = [];\r\n instance.push.apply(instance, arguments);\r\n Object.setPrototypeOf(instance, Cache.prototype);\r\n return instance;\r\n}\r\nCache.prototype = Object.create(Array.prototype);\r\nObject.getOwnPropertyNames(CacheProto.prototype).forEach(methodName =>\r\n Cache.prototype[methodName] = CacheProto.prototype[methodName]\r\n);\r\n\r\nfunction generateElement(template) {\r\n if(template.nodeType !== Node.ELEMENT_NODE) {\r\n throw new Error('ui-scroll directive requires an Element node for templating the view');\r\n }\r\n let element;\r\n switch (template.tagName.toLowerCase()) {\r\n case 'dl':\r\n throw new Error(`ui-scroll directive does not support <${template.tagName}> as a repeating tag: ${template.outerHTML}`);\r\n case 'tr':\r\n let table = angular.element('
    ');\r\n element = table.find('tr');\r\n break;\r\n case 'li':\r\n element = angular.element('
  • ');\r\n break;\r\n default:\r\n element = angular.element('
    ');\r\n }\r\n return element;\r\n}\r\n\r\nclass Padding {\r\n constructor(template,rowHeight) {\r\n this.element = generateElement(template);\r\n this.cache = new Cache();\r\n this.cache.rowHeight = rowHeight;\r\n }\r\n\r\n height() {\r\n // When called wit a parameter, this sets the height of the padding\r\n return this.element.height.apply(this.element, arguments);\r\n }\r\n}\r\n\r\nexport default Padding;","import Padding from './padding';\r\n\r\nexport default function Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding, rowHeight) {\r\n let topPadding = null;\r\n let bottomPadding = null;\r\n const viewport = viewportController && viewportController.viewport ? viewportController.viewport : angular.element(window);\r\n const container = viewportController && viewportController.container ? viewportController.container : undefined;\r\n const scope = viewportController && viewportController.scope ? viewportController.scope : $rootScope;\r\n\r\n viewport.css({\r\n 'overflow-anchor': 'none',\r\n 'overflow-y': 'auto',\r\n 'display': 'block'\r\n });\r\n\r\n function bufferPadding() {\r\n return viewport.outerHeight() * padding; // some extra space to initiate preload\r\n }\r\n\r\n angular.extend(viewport, {\r\n getScope() {\r\n return scope;\r\n },\r\n\r\n createPaddingElements(template) {\r\n topPadding = new Padding(template,rowHeight);\r\n bottomPadding = new Padding(template,rowHeight);\r\n element.before(topPadding.element);\r\n element.after(bottomPadding.element);\r\n topPadding.height(0);\r\n bottomPadding.height(0);\r\n },\r\n\r\n applyContainerStyle() {\r\n if (!container) {\r\n return true;\r\n }\r\n if(container !== viewport) {\r\n viewport.css('height', window.getComputedStyle(container[0]).height);\r\n }\r\n return viewport.height() > 0;\r\n },\r\n\r\n bottomDataPos() {\r\n let scrollHeight = viewport[0].scrollHeight;\r\n scrollHeight = scrollHeight != null ? scrollHeight : viewport[0].document.documentElement.scrollHeight;\r\n return scrollHeight - bottomPadding.height();\r\n },\r\n\r\n topDataPos() {\r\n return topPadding.height();\r\n },\r\n\r\n bottomVisiblePos() {\r\n return viewport.scrollTop() + viewport.outerHeight();\r\n },\r\n\r\n topVisiblePos() {\r\n return viewport.scrollTop();\r\n },\r\n\r\n insertElement(e, sibling) {\r\n return elementRoutines.insertElement(e, sibling || topPadding.element);\r\n },\r\n\r\n insertElementAnimated(e, sibling) {\r\n return elementRoutines.insertElementAnimated(e, sibling || topPadding.element);\r\n },\r\n\r\n shouldLoadBottom() {\r\n return !buffer.eof && viewport.bottomDataPos() < viewport.bottomVisiblePos() + bufferPadding();\r\n },\r\n\r\n clipBottom() {\r\n // clip the invisible items off the bottom\r\n let overage = 0;\r\n let overageHeight = 0;\r\n let itemHeight = 0;\r\n let emptySpaceHeight = viewport.bottomDataPos() - viewport.bottomVisiblePos() - bufferPadding();\r\n\r\n // Simple calculation now using the fixed rowHeight if available.\r\n // Might be optimized if needed\r\n for (let i = buffer.length - 1; i >= 0; i--) {\r\n itemHeight = rowHeight ? rowHeight : buffer[i].element.outerHeight(true);\r\n if (overageHeight + itemHeight > emptySpaceHeight) {\r\n break;\r\n }\r\n bottomPadding.cache.add(buffer[i]);\r\n overageHeight += itemHeight;\r\n overage++;\r\n }\r\n\r\n if (overage > 0) {\r\n buffer.eof = false;\r\n buffer.remove(buffer.length - overage, buffer.length);\r\n buffer.next -= overage;\r\n viewport.adjustPaddings();\r\n }\r\n },\r\n\r\n shouldLoadTop() {\r\n return !buffer.bof && (viewport.topDataPos() > viewport.topVisiblePos() - bufferPadding());\r\n },\r\n\r\n clipTop() {\r\n // clip the invisible items off the top\r\n let overage = 0;\r\n let overageHeight = 0;\r\n let itemHeight = 0;\r\n let emptySpaceHeight = viewport.topVisiblePos() - viewport.topDataPos() - bufferPadding();\r\n\r\n // Simple calculation now using the fixed rowHeight if available.\r\n // Might be optimized if needed\r\n for (let i = 0; i < buffer.length; i++) {\r\n itemHeight = rowHeight ? rowHeight : buffer[i].element.outerHeight(true);\r\n if (overageHeight + itemHeight > emptySpaceHeight) {\r\n break;\r\n }\r\n topPadding.cache.add(buffer[i]);\r\n overageHeight += itemHeight;\r\n overage++;\r\n }\r\n\r\n if (overage > 0) {\r\n // we need to adjust top padding element before items are removed from top\r\n // to avoid strange behaviour of scroll bar during remove top items when we are at the very bottom\r\n topPadding.height(topPadding.height() + overageHeight);\r\n buffer.bof = false;\r\n buffer.remove(0, overage);\r\n buffer.first += overage;\r\n }\r\n },\r\n\r\n adjustPaddings() {\r\n if (!buffer.length) {\r\n return;\r\n }\r\n\r\n // precise heights calculation based on items that are in buffer or that were in buffer once\r\n // outerHeight(true) == [height+ padding + border + margin]\r\n // The calculation bellow can certainly be replaced by:\r\n // const visibleItemsHeight = rowHeight ? rowHeight * buffer.length\r\n // : buffer.reduce((summ, item) => summ + item.element.outerHeight(true), 0);\r\n const visibleItemsHeight = buffer.reduce((summ, item) => summ + (rowHeight ? rowHeight : item.element.outerHeight(true)), 0);\r\n\r\n // Sinlarly, the calculation of the paddings (top & bottom) can certanly be optimizez\r\n let topPaddingHeight = 0, topCount = 0;\r\n topPadding.cache.forEach(item => {\r\n if(item.index < buffer.first) {\r\n topPaddingHeight += item.height; // outerHeight(true) is actually stored in this data member\r\n topCount++;\r\n }\r\n });\r\n\r\n let bottomPaddingHeight = 0, bottomCount = 0;\r\n bottomPadding.cache.forEach(item => {\r\n if(item.index >= buffer.next) {\r\n bottomPaddingHeight += item.height; // outerHeight(true) is actually stored in this data member\r\n bottomCount++;\r\n }\r\n });\r\n\r\n const totalHeight = visibleItemsHeight + topPaddingHeight + bottomPaddingHeight;\r\n const averageItemHeight = totalHeight / (topCount + bottomCount + buffer.length);\r\n\r\n // average heights calculation, items that have never been reached\r\n let adjustTopPadding = buffer.minIndexUser !== null && buffer.minIndex > buffer.minIndexUser;\r\n let adjustBottomPadding = buffer.maxIndexUser !== null && buffer.maxIndex < buffer.maxIndexUser;\r\n let topPaddingHeightAdd = adjustTopPadding ? (buffer.minIndex - buffer.minIndexUser) * averageItemHeight : 0;\r\n let bottomPaddingHeightAdd = adjustBottomPadding ? (buffer.maxIndexUser - buffer.maxIndex) * averageItemHeight : 0;\r\n\r\n // paddings combine adjustment\r\n topPadding.height(topPaddingHeight + topPaddingHeightAdd);\r\n bottomPadding.height(bottomPaddingHeight + bottomPaddingHeightAdd);\r\n },\r\n\r\n onAfterMinIndexSet(topPaddingHeightOld) {\r\n // additional scrollTop adjustment in case of datasource.minIndex external set\r\n if (buffer.minIndexUser !== null && buffer.minIndex > buffer.minIndexUser) {\r\n let diff = topPadding.height() - topPaddingHeightOld;\r\n viewport.scrollTop(viewport.scrollTop() + diff);\r\n while((diff -= viewport.scrollTop()) > 0) {\r\n bottomPadding.height(bottomPadding.height() + diff);\r\n viewport.scrollTop(viewport.scrollTop() + diff);\r\n }\r\n }\r\n },\r\n\r\n onAfterPrepend(updates) {\r\n if (!updates.prepended.length)\r\n return;\r\n const height = buffer.effectiveHeight(updates.prepended);\r\n const paddingHeight = topPadding.height() - height;\r\n if (paddingHeight >= 0) {\r\n topPadding.height(paddingHeight);\r\n }\r\n else {\r\n topPadding.height(0);\r\n viewport.scrollTop(viewport.scrollTop() - paddingHeight);\r\n }\r\n },\r\n\r\n resetTopPadding() {\r\n topPadding.height(0);\r\n topPadding.cache.clear();\r\n },\r\n\r\n resetBottomPadding() {\r\n bottomPadding.height(0);\r\n bottomPadding.cache.clear();\r\n },\r\n\r\n removeCacheItem(item, isTop) {\r\n topPadding.cache.remove(item, isTop);\r\n bottomPadding.cache.remove(item, isTop);\r\n },\r\n\r\n removeItem(item) {\r\n this.removeCacheItem(item);\r\n return buffer.remove(item);\r\n }\r\n });\r\n\r\n return viewport;\r\n}\r\n","class Adapter {\r\n\r\n constructor($scope, $parse, $attr, viewport, buffer, doAdjust, reload) {\r\n this.$parse = $parse;\r\n this.$attr = $attr;\r\n this.viewport = viewport;\r\n this.buffer = buffer;\r\n\r\n this.doAdjust = doAdjust;\r\n this.reload = reload;\r\n\r\n this.isLoading = false;\r\n this.disabled = false;\r\n\r\n const viewportScope = viewport.getScope();\r\n this.startScope = viewportScope.$parent ? viewportScope : $scope;\r\n\r\n this.publicContext = {};\r\n this.assignAdapter($attr.adapter);\r\n this.generatePublicContext();\r\n }\r\n\r\n assignAdapter(adapterAttr) {\r\n if (!adapterAttr || !(adapterAttr = adapterAttr.replace(/^\\s+|\\s+$/gm, ''))) {\r\n return;\r\n }\r\n let adapterOnScope;\r\n\r\n try {\r\n this.$parse(adapterAttr).assign(this.startScope, {});\r\n adapterOnScope = this.$parse(adapterAttr)(this.startScope);\r\n }\r\n catch (error) {\r\n error.message = `Angular ui-scroll Adapter assignment exception.\\n` +\r\n `Can't parse \"${adapterAttr}\" expression.\\n` +\r\n error.message;\r\n throw error;\r\n }\r\n\r\n angular.extend(adapterOnScope, this.publicContext);\r\n this.publicContext = adapterOnScope;\r\n }\r\n\r\n generatePublicContext() {\r\n // these methods will be accessible out of ui-scroll via user defined adapter\r\n const publicMethods = ['reload', 'applyUpdates', 'append', 'prepend', 'isBOF', 'isEOF', 'isEmpty'];\r\n for (let i = publicMethods.length - 1; i >= 0; i--) {\r\n this.publicContext[publicMethods[i]] = this[publicMethods[i]].bind(this);\r\n }\r\n\r\n // these read-only props will be accessible out of ui-scroll via user defined adapter\r\n const publicProps = ['isLoading', 'topVisible', 'topVisibleElement', 'topVisibleScope', 'bottomVisible', 'bottomVisibleElement', 'bottomVisibleScope'];\r\n for (let i = publicProps.length - 1; i >= 0; i--) {\r\n let property, attr = this.$attr[publicProps[i]];\r\n Object.defineProperty(this, publicProps[i], {\r\n get: () => property,\r\n set: (value) => {\r\n property = value;\r\n this.publicContext[publicProps[i]] = value;\r\n if (attr) {\r\n this.$parse(attr).assign(this.startScope, value);\r\n }\r\n }\r\n });\r\n }\r\n\r\n // non-read-only public property\r\n Object.defineProperty(this.publicContext, 'disabled', {\r\n get: () => this.disabled,\r\n set: (value) => (!(this.disabled = value)) ? this.doAdjust() : null\r\n });\r\n }\r\n\r\n loading(value) {\r\n this.isLoading = value;\r\n }\r\n\r\n isBOF() {\r\n return this.buffer.bof;\r\n }\r\n\r\n isEOF() {\r\n return this.buffer.eof;\r\n }\r\n\r\n isEmpty() {\r\n return !this.buffer.length;\r\n }\r\n\r\n append(newItems) {\r\n this.buffer.append(newItems);\r\n this.doAdjust();\r\n this.viewport.clipTop();\r\n this.viewport.clipBottom();\r\n }\r\n\r\n prepend(newItems) {\r\n this.buffer.prepend(newItems);\r\n this.doAdjust();\r\n this.viewport.clipTop();\r\n this.viewport.clipBottom();\r\n }\r\n\r\n applyUpdates(arg1, arg2) {\r\n if (typeof arg1 === 'function') {\r\n this.applyUpdatesFunc(arg1);\r\n } else {\r\n this.applyUpdatesIndex(arg1, arg2);\r\n }\r\n this.doAdjust();\r\n }\r\n\r\n applyUpdatesFunc(cb) {\r\n this.buffer.slice(0).forEach((wrapper) => {\r\n // we need to do it on the buffer clone, because buffer content\r\n // may change as we iterate through\r\n this.applyUpdate(wrapper, cb(wrapper.item, wrapper.scope, wrapper.element));\r\n });\r\n }\r\n\r\n applyUpdatesIndex(index, newItems) {\r\n if (index % 1 !== 0) {\r\n throw new Error('applyUpdates - ' + index + ' is not a valid index (should be an integer)');\r\n }\r\n const _index = index - this.buffer.first;\r\n\r\n // apply updates only within buffer\r\n if (_index >= 0 && _index < this.buffer.length) {\r\n this.applyUpdate(this.buffer[_index], newItems);\r\n }\r\n // out-of-buffer case: deletion may affect Paddings\r\n else if(index >= this.buffer.getAbsMinIndex() && index <= this.buffer.getAbsMaxIndex()) {\r\n if(angular.isArray(newItems) && !newItems.length) {\r\n this.viewport.removeCacheItem(index, index === this.buffer.minIndex);\r\n if(index === this.buffer.getAbsMinIndex()) {\r\n this.buffer.incrementMinIndex();\r\n }\r\n else {\r\n this.buffer.decrementMaxIndex();\r\n }\r\n }\r\n }\r\n }\r\n\r\n applyUpdate(wrapper, newItems) {\r\n if (!angular.isArray(newItems)) {\r\n return;\r\n }\r\n let position = this.buffer.indexOf(wrapper);\r\n if (!newItems.reverse().some(newItem => newItem === wrapper.item)) {\r\n wrapper.op = 'remove';\r\n if(position === 0 && !newItems.length) {\r\n wrapper._op = 'isTop'; // to catch \"first\" edge case on remove\r\n }\r\n }\r\n newItems.forEach((newItem) => {\r\n if (newItem === wrapper.item) {\r\n position--;\r\n } else {\r\n // 3 parameter (isTop) is to catch \"first\" edge case on insert\r\n this.buffer.insert(position + 1, newItem, position === -1);\r\n }\r\n });\r\n }\r\n\r\n calculateProperties() {\r\n let rowTop = null, topHeight = 0;\r\n let topDone = false, bottomDone = false;\r\n const length = this.buffer.length;\r\n\r\n for (let i = 0; i < length; i++) {\r\n const item = this.buffer[i];\r\n const itemTop = item.element.offset().top;\r\n\r\n if (rowTop !== itemTop) { // a new row condition\r\n const itemHeight = item.element.outerHeight(true);\r\n const top = this.viewport.topDataPos() + topHeight + itemHeight;\r\n\r\n if (!topDone && top > this.viewport.topVisiblePos()) {\r\n topDone = true;\r\n this['topVisible'] = item.item;\r\n this['topVisibleElement'] = item.element;\r\n this['topVisibleScope'] = item.scope;\r\n }\r\n if (!bottomDone && (top >= this.viewport.bottomVisiblePos() || (i === length - 1 && this.isEOF()))) {\r\n bottomDone = true;\r\n this['bottomVisible'] = item.item;\r\n this['bottomVisibleElement'] = item.element;\r\n this['bottomVisibleScope'] = item.scope;\r\n }\r\n topHeight += itemHeight;\r\n }\r\n rowTop = itemTop;\r\n\r\n if (topDone && bottomDone) {\r\n break;\r\n }\r\n }\r\n }\r\n\r\n}\r\n\r\nexport default Adapter;\r\n","import JQLiteExtras from './modules/jqLiteExtras';\nimport ElementRoutines from './modules/elementRoutines.js';\nimport ScrollBuffer from './modules/buffer.js';\nimport Viewport from './modules/viewport.js';\nimport Adapter from './modules/adapter.js';\n\nangular.module('ui.scroll', [])\n\n .constant('JQLiteExtras', JQLiteExtras)\n .run(['JQLiteExtras', (JQLiteExtras) => {\n !window.jQuery ? (new JQLiteExtras()).registerFor(angular.element) : null;\n ElementRoutines.addCSSRules();\n }])\n\n .directive('uiScrollViewport', function () {\n return {\n restrict: 'A',\n controller: [\n '$scope',\n '$element',\n function (scope, element) {\n this.container = element;\n this.viewport = element;\n this.scope = scope;\n\n angular.forEach(element.children(), child => {\n if (child.tagName.toLowerCase() === 'tbody') {\n this.viewport = angular.element(child);\n }\n });\n\n return this;\n }\n ]\n };\n })\n\n .directive('uiScroll', [\n '$log',\n '$injector',\n '$rootScope',\n '$timeout',\n '$interval',\n '$q',\n '$parse',\n function (console, $injector, $rootScope, $timeout, $interval, $q, $parse) {\n\n return {\n require: ['?^uiScrollViewport'],\n restrict: 'A',\n transclude: 'element',\n priority: 1000,\n terminal: true,\n link: link\n };\n\n function link($scope, element, $attr, controllers, linker) {\n const match = $attr.uiScroll.match(/^\\s*(\\w+)\\s+in\\s+([(\\w|\\$)\\.]+)\\s*$/);\n if (!match) {\n throw new Error('Expected uiScroll in form of \\'_item_ in _datasource_\\' but got \\'' + $attr.uiScroll + '\\'');\n }\n\n function parseNumber(value, defaultValue, isFloat) {\n if (!isFloat) {\n value = value === null ? defaultValue : Math.floor(value);\n }\n return isNaN(value) ? defaultValue : value;\n }\n\n function parseNumericAttr(value, defaultValue, isFloat) {\n const result = $parse(value)($scope);\n return parseNumber(result, defaultValue, isFloat);\n }\n\n const BUFFER_MIN = 3; // Minimum size of the data source request\n const BUFFER_DEFAULT = 10; // Default datasource request size\n const PADDING_MIN = 0.3; // Mininum # of rows in the padding area\n const PADDING_DEFAULT = 0.5; // Default # of rows in the padding area\n const START_INDEX_DEFAULT = 1; // Default start index when requestng the first data block\n const MAX_VIEWPORT_DELAY = 500; // Max time wait (ms) to get the viewport with an height>0\n const VIEWPORT_POLLING_INTERVAL = 50; // Interval used to check the initial viewport height\n\n let datasource = null;\n const itemName = match[1]; // Name of the index variable to publish\n const datasourceName = match[2]; // Name of the datasource to request the rows from\n const viewportController = controllers[0]; // ViewportController, as specified in the require option (http://websystique.com/angularjs/angularjs-custom-directives-controllers-require-option-guide/)\n const bufferSize = Math.max(BUFFER_MIN, parseNumericAttr($attr.bufferSize, BUFFER_DEFAULT)); \n const padding = Math.max(PADDING_MIN, parseNumericAttr($attr.padding, PADDING_DEFAULT, true));\n let startIndex = parseNumericAttr($attr.startIndex, START_INDEX_DEFAULT);\n\n // PHIL: Provide a fixed row height\n // \n const rowHeight = parseNumericAttr($attr.rowHeight, null, false);\n\n // PHIL: Read the visibility watch option, true by default\n const allowVisibilityWatch = $attr.allowVisibilityWatch!=='false';\n\n // Revision IDs\n // \n let ridActual = 0; // current data revision id\n let pending = [];\n\n const elementRoutines = new ElementRoutines($injector, $q);\n const buffer = new ScrollBuffer(elementRoutines, bufferSize, startIndex);\n const viewport = new Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding, rowHeight);\n const adapter = new Adapter($scope, $parse, $attr, viewport, buffer, doAdjust, reload);\n\n if (viewportController) {\n viewportController.adapter = adapter;\n }\n\n const isDatasourceValid = () =>\n Object.prototype.toString.call(datasource) === '[object Object]' && typeof datasource.get === 'function';\n\n datasource = $parse(datasourceName)($scope); // try to get datasource on scope\n if (!isDatasourceValid()) {\n datasource = $injector.get(datasourceName); // try to inject datasource as service\n if (!isDatasourceValid()) {\n throw new Error(datasourceName + ' is not a valid datasource');\n }\n }\n\n let onRenderHandlers = [];\n function onRenderHandlersRunner() {\n onRenderHandlers.forEach(handler => handler.run());\n onRenderHandlers = [];\n }\n function persistDatasourceIndex(datasource, propName) {\n let getter;\n // need to postpone min/maxIndexUser processing if the view is empty\n if(angular.isNumber(datasource[propName])) {\n getter = datasource[propName];\n if(angular.isNumber(getter)) {\n onRenderHandlers = onRenderHandlers.filter(handler => handler.id !== propName);\n onRenderHandlers.push({\n id: propName,\n run: () => datasource[propName] = getter\n });\n }\n }\n }\n\n function defineDatasourceIndex(datasource, propName, propUserName) {\n const descriptor = Object.getOwnPropertyDescriptor(datasource, propName);\n if (descriptor && (descriptor.set || descriptor.get)) {\n return;\n }\n let getter;\n persistDatasourceIndex(datasource, propName);\n Object.defineProperty(datasource, propName, {\n set: (value) => {\n getter = value;\n if(pending.length && !buffer.length) {\n persistDatasourceIndex(datasource, propName);\n return;\n }\n buffer[propUserName] = value;\n const topPaddingHeightOld = viewport.topDataPos();\n viewport.adjustPaddings();\n if (propName === 'minIndex') {\n viewport.onAfterMinIndexSet(topPaddingHeightOld);\n }\n },\n get: () => getter\n });\n }\n\n defineDatasourceIndex(datasource, 'minIndex', 'minIndexUser');\n defineDatasourceIndex(datasource, 'maxIndex', 'maxIndexUser');\n\n const fetchNext = (datasource.get.length !== 2) ?\n (success) => datasource.get(buffer.next, bufferSize, success) :\n (success) => {\n datasource.get({\n index: buffer.next,\n append: buffer.length ? buffer[buffer.length - 1].item : void 0,\n count: bufferSize\n }, success);\n };\n\n const fetchPrevious = (datasource.get.length !== 2) ?\n (success) => datasource.get(buffer.first - bufferSize, bufferSize, success) :\n (success) => {\n datasource.get({\n index: buffer.first - bufferSize,\n prepend: buffer.length ? buffer[0].item : void 0,\n count: bufferSize\n }, success);\n };\n\n const initialize = () => {\n let tryCount = 0;\n if(!viewport.applyContainerStyle()) {\n const timer = $interval(() => {\n tryCount++;\n if(viewport.applyContainerStyle()) {\n $interval.cancel(timer);\n doAdjust();\n }\n if(tryCount * VIEWPORT_POLLING_INTERVAL >= MAX_VIEWPORT_DELAY) {\n $interval.cancel(timer);\n throw Error(`ui-scroll directive requires a viewport with non-zero height in ${MAX_VIEWPORT_DELAY}ms`);\n }\n }, VIEWPORT_POLLING_INTERVAL);\n }\n else {\n doAdjust();\n }\n };\n\n /**\n * Build padding elements\n *\n * Calling linker is the only way I found to get access to the tag name of the template\n * to prevent the directive scope from pollution a new scope is created and destroyed\n * right after the builder creation is completed\n */\n linker((clone, scope) => {\n viewport.createPaddingElements(clone[0]);\n // we do not include the clone in the DOM. It means that the nested directives will not\n // be able to reach the parent directives, but in this case it is intentional because we\n // created the clone to access the template tag name\n scope.$destroy();\n clone.remove();\n });\n\n $scope.$on('$destroy', () => {\n unbindEvents();\n viewport.unbind('mousewheel', wheelHandler);\n });\n\n viewport.bind('mousewheel', wheelHandler);\n\n initialize();\n\n /* Private function definitions */\n\n function isInvalid(rid) {\n return (rid && rid !== ridActual) || $scope.$$destroyed;\n }\n\n function bindEvents() {\n viewport.bind('resize', resizeAndScrollHandler);\n viewport.bind('scroll', resizeAndScrollHandler);\n }\n\n function unbindEvents() {\n viewport.unbind('resize', resizeAndScrollHandler);\n viewport.unbind('scroll', resizeAndScrollHandler);\n }\n\n function reload() {\n viewport.resetTopPadding();\n viewport.resetBottomPadding();\n if (arguments.length) {\n startIndex = parseNumber(arguments[0], START_INDEX_DEFAULT, false);\n }\n buffer.reset(startIndex);\n persistDatasourceIndex(datasource, 'minIndex');\n persistDatasourceIndex(datasource, 'maxIndex');\n doAdjust();\n }\n\n function isElementVisible(wrapper) {\n return (rowHeight || wrapper.element.height()) && wrapper.element[0].offsetParent;\n }\n\n function visibilityWatcher(wrapper) {\n if (isElementVisible(wrapper)) {\n buffer.forEach((item) => {\n if (typeof item.unregisterVisibilityWatcher === 'function') {\n item.unregisterVisibilityWatcher();\n delete item.unregisterVisibilityWatcher;\n }\n });\n if (!pending.length) {\n $timeout(() => doAdjust());\n }\n }\n }\n\n function insertWrapperContent(wrapper, insertAfter) {\n createElement(wrapper, insertAfter, viewport.insertElement);\n if (allowVisibilityWatch && !isElementVisible(wrapper)) {\n wrapper.unregisterVisibilityWatcher = wrapper.scope.$watch(() => visibilityWatcher(wrapper));\n }\n if (allowVisibilityWatch) {\n elementRoutines.hideElement(wrapper); // hide inserted elements before data binding\n }\n }\n\n function createElement(wrapper, insertAfter, insertElement) {\n let promises = null;\n const sibling = (insertAfter > 0) ? buffer[insertAfter - 1].element : undefined;\n linker((clone, scope) => {\n promises = insertElement(clone, sibling);\n wrapper.element = clone;\n wrapper.scope = scope;\n scope[itemName] = wrapper.item;\n });\n // ui-scroll-grid apply\n if (adapter.transform) {\n const tdInitializer = wrapper.scope.uiScrollTdInitializer;\n if (tdInitializer && tdInitializer.linking) {\n adapter.transform(wrapper.scope, wrapper.element);\n } else {\n wrapper.scope.uiScrollTdInitializer = {\n onLink: () => adapter.transform(wrapper.scope, wrapper.element),\n scope: wrapper.scope\n };\n }\n }\n return promises;\n }\n\n function updateDOM() {\n let promises = [];\n const toBePrepended = [];\n const toBeRemoved = [];\n const inserted = [];\n\n buffer.forEach((wrapper, i) => {\n switch (wrapper.op) {\n case 'prepend':\n toBePrepended.unshift(wrapper);\n break;\n case 'append':\n insertWrapperContent(wrapper, i);\n wrapper.op = 'none';\n inserted.push(wrapper);\n break;\n case 'insert':\n promises = promises.concat(createElement(wrapper, i, viewport.insertElementAnimated));\n wrapper.op = 'none';\n inserted.push(wrapper);\n break;\n case 'remove':\n toBeRemoved.push(wrapper);\n }\n });\n\n toBeRemoved.forEach((wrapper) => promises = promises.concat(viewport.removeItem(wrapper)));\n\n if (toBePrepended.length)\n toBePrepended.forEach((wrapper) => {\n insertWrapperContent(wrapper);\n wrapper.op = 'none';\n });\n\n buffer.forEach((item, i) => item.scope.$index = buffer.first + i);\n\n return {\n prepended: toBePrepended,\n removed: toBeRemoved,\n inserted: inserted,\n animated: promises\n };\n\n }\n\n // Adjust the viewport paddings\n // \n function updatePaddings(rid, updates) {\n // schedule another doAdjust after animation completion\n if (updates.animated.length) {\n $q.all(updates.animated).then(() => {\n viewport.adjustPaddings();\n doAdjust(rid);\n });\n } else {\n viewport.adjustPaddings();\n }\n }\n\n function enqueueFetch(rid, updates) {\n if (viewport.shouldLoadBottom()) {\n if (!updates || buffer.effectiveHeight(updates.inserted) > 0) {\n // this means that at least one item appended in the last batch has height > 0\n if (pending.push(true) === 1) {\n adapter.loading(true);\n fetch(rid);\n }\n }\n } else if (viewport.shouldLoadTop()) {\n if ((!updates || buffer.effectiveHeight(updates.prepended) > 0) || pending[0]) {\n // this means that at least one item appended in the last batch has height > 0\n // pending[0] = true means that previous fetch was appending. We need to force at least one prepend\n // BTW there will always be at least 1 element in the pending array because bottom is fetched first\n if (pending.push(false) === 1) {\n adapter.loading(true);\n fetch(rid);\n }\n }\n }\n }\n\n function processUpdates() {\n const updates = updateDOM();\n\n // We need the item bindings to be processed before we can do adjustments\n !$scope.$$phase && !$rootScope.$$phase && $scope.$digest();\n\n if (allowVisibilityWatch) {\n updates.inserted.forEach(w => elementRoutines.showElement(w));\n updates.prepended.forEach(w => elementRoutines.showElement(w));\n }\n\n return updates;\n }\n\n function doAdjust(rid) {\n if (!rid) { // dismiss pending requests\n pending = [];\n rid = ++ridActual;\n }\n\n const updates = processUpdates();\n\n if (isInvalid(rid)) {\n return;\n }\n\n updatePaddings(rid, updates);\n enqueueFetch(rid);\n\n if (!pending.length) {\n adapter.calculateProperties();\n }\n }\n\n function doAdjustAfterFetch(rid) {\n const updates = processUpdates();\n\n viewport.onAfterPrepend(updates);\n\n if (isInvalid(rid)) {\n return;\n }\n\n updatePaddings(rid, updates);\n onRenderHandlersRunner();\n enqueueFetch(rid, updates);\n pending.shift();\n\n if (pending.length)\n fetch(rid);\n else {\n adapter.loading(false);\n bindEvents();\n adapter.calculateProperties();\n }\n }\n\n function fetch(rid) {\n if (pending[0]) {// scrolling down\n if (buffer.length && !viewport.shouldLoadBottom()) {\n doAdjustAfterFetch(rid);\n } else {\n fetchNext((result) => {\n if (isInvalid(rid)) {\n return;\n }\n\n if (result.length < bufferSize) {\n buffer.eof = true;\n }\n\n if (result.length > 0) {\n viewport.clipTop();\n buffer.append(result);\n }\n\n doAdjustAfterFetch(rid);\n });\n }\n } else { // scrolling up\n if (buffer.length && !viewport.shouldLoadTop()) {\n doAdjustAfterFetch(rid);\n } else {\n fetchPrevious((result) => {\n if (isInvalid(rid)) {\n return;\n }\n\n if (result.length < bufferSize) {\n buffer.bof = true;\n // log 'bof is reached'\n }\n\n if (result.length > 0) {\n if (buffer.length) {\n viewport.clipBottom();\n }\n buffer.prepend(result);\n }\n\n doAdjustAfterFetch(rid);\n });\n }\n }\n }\n\n function resizeAndScrollHandler() {\n if (!$rootScope.$$phase && !adapter.isLoading && !adapter.disabled) {\n\n enqueueFetch(ridActual);\n\n if (pending.length) {\n unbindEvents();\n } else {\n adapter.calculateProperties();\n if(!rowHeight) {\n // The digest is forced to calculate the height, which is not necessary when the height is knowm\n !$scope.$$phase && $scope.$digest();\n }\n }\n }\n }\n\n function wheelHandler(event) {\n if (!adapter.disabled) {\n const scrollTop = viewport[0].scrollTop;\n const yMax = viewport[0].scrollHeight - viewport[0].clientHeight;\n\n if ((scrollTop === 0 && !buffer.bof) || (scrollTop === yMax && !buffer.eof)) {\n event.preventDefault();\n }\n }\n }\n }\n\n }\n ]);\n"],"sourceRoot":""} \ No newline at end of file diff --git a/src/ui-scroll.js b/src/ui-scroll.js index 6234e0dc..c4be0500 100644 --- a/src/ui-scroll.js +++ b/src/ui-scroll.js @@ -92,6 +92,9 @@ angular.module('ui.scroll', []) // const rowHeight = parseNumericAttr($attr.rowHeight, null, false); + // PHIL: Read the visibility watch option, true by default + const allowVisibilityWatch = $attr.allowVisibilityWatch!=='false'; + // Revision IDs // let ridActual = 0; // current data revision id @@ -259,7 +262,7 @@ angular.module('ui.scroll', []) } function isElementVisible(wrapper) { - return wrapper.element.height() && wrapper.element[0].offsetParent; + return (rowHeight || wrapper.element.height()) && wrapper.element[0].offsetParent; } function visibilityWatcher(wrapper) { @@ -278,10 +281,10 @@ angular.module('ui.scroll', []) function insertWrapperContent(wrapper, insertAfter) { createElement(wrapper, insertAfter, viewport.insertElement); - if (!rowHeight && !isElementVisible(wrapper)) { + if (allowVisibilityWatch && !isElementVisible(wrapper)) { wrapper.unregisterVisibilityWatcher = wrapper.scope.$watch(() => visibilityWatcher(wrapper)); } - if (!rowHeight) { + if (allowVisibilityWatch) { elementRoutines.hideElement(wrapper); // hide inserted elements before data binding } } @@ -397,7 +400,7 @@ angular.module('ui.scroll', []) // We need the item bindings to be processed before we can do adjustments !$scope.$$phase && !$rootScope.$$phase && $scope.$digest(); - if (!rowHeight) { + if (allowVisibilityWatch) { updates.inserted.forEach(w => elementRoutines.showElement(w)); updates.prepended.forEach(w => elementRoutines.showElement(w)); } From 43561dd645174d4315f5c84be96daf1393205c90 Mon Sep 17 00:00:00 2001 From: Philippe Riand Date: Mon, 17 Jun 2019 11:01:34 -0400 Subject: [PATCH 06/18] Looks like the source was not properly commited - changed ui-scroll --- src/ui-scroll.js | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/ui-scroll.js b/src/ui-scroll.js index edb83dea..0021c1e4 100644 --- a/src/ui-scroll.js +++ b/src/ui-scroll.js @@ -8,7 +8,7 @@ angular.module('ui.scroll', []) .constant('JQLiteExtras', JQLiteExtras) .run(['JQLiteExtras', (JQLiteExtras) => { - !window.jQuery ? (new JQLiteExtras()).registerFor(angular.element) : null; + !(angular.element.fn && angular.element.fn.jquery) ? new JQLiteExtras().registerFor(angular.element) : null; ElementRoutines.addCSSRules(); }]) From d183273d3bc046f020166ee7aca40dbf46ea4fe9 Mon Sep 17 00:00:00 2001 From: dhilt Date: Wed, 19 Jun 2019 13:41:24 +0300 Subject: [PATCH 07/18] jquery load demo --- demo/jquery/jquery.html | 37 +++++++++++++++++++++++++++++++++++++ demo/jquery/jquery.js | 21 +++++++++++++++++++++ src/ui-scroll.js | 3 ++- 3 files changed, 60 insertions(+), 1 deletion(-) create mode 100644 demo/jquery/jquery.html create mode 100644 demo/jquery/jquery.js diff --git a/demo/jquery/jquery.html b/demo/jquery/jquery.html new file mode 100644 index 00000000..390b9360 --- /dev/null +++ b/demo/jquery/jquery.html @@ -0,0 +1,37 @@ + + + + + jQuery + + + + + + + + +
    + + browse other examples + +

    jQuery

    + +
    + In case the Angular App works with jQuery, the ui-scroll should use jQuery. + Otherwise, the ui-scroll should use jqLiteExtras. +
    + +
    + jQuery version is {{jqueryVersion}} + jQuery is not loaded +
    + +
    +
    {{item}}
    +
    + +
    + + + \ No newline at end of file diff --git a/demo/jquery/jquery.js b/demo/jquery/jquery.js new file mode 100644 index 00000000..de5167d2 --- /dev/null +++ b/demo/jquery/jquery.js @@ -0,0 +1,21 @@ +angular.module('application', ['ui.scroll']) + .controller('mainController', [ + '$scope', '$log', '$timeout', function ($scope, console, $timeout) { + var datasource = {}; + + datasource.get = function (index, count, success) { + $timeout(function () { + var result = []; + for (var i = index; i <= index + count - 1; i++) { + result.push("item #" + i); + } + success(result); + }, 100); + }; + + $scope.datasource = datasource; + + $scope.jqueryVersion = window.jQuery && angular.element.fn && angular.element.fn.jquery; + + } + ]); diff --git a/src/ui-scroll.js b/src/ui-scroll.js index 0021c1e4..c5ee58a6 100644 --- a/src/ui-scroll.js +++ b/src/ui-scroll.js @@ -8,7 +8,8 @@ angular.module('ui.scroll', []) .constant('JQLiteExtras', JQLiteExtras) .run(['JQLiteExtras', (JQLiteExtras) => { - !(angular.element.fn && angular.element.fn.jquery) ? new JQLiteExtras().registerFor(angular.element) : null; + const elt = angular.element; + !(window.jQuery && elt.fn && elt.fn.jquery) ? (new JQLiteExtras()).registerFor(elt) : null; ElementRoutines.addCSSRules(); }]) From 62c8bc6b834798a9817d0da5c3fa0cabaa138390 Mon Sep 17 00:00:00 2001 From: dhilt Date: Wed, 19 Jun 2019 13:53:31 +0300 Subject: [PATCH 08/18] v1.7.4 release --- README.md | 3 +++ bower.json | 2 +- package.json | 2 +- 3 files changed, 5 insertions(+), 2 deletions(-) diff --git a/README.md b/README.md index 6fcdaebe..524d609f 100644 --- a/README.md +++ b/README.md @@ -475,6 +475,9 @@ Pull Rerquest should include source code (./scr) changes, may include tests (./t ## Change log +### v1.7.4 + * Fixed jqLite/jQuery confrontation. + ### v1.7.3 * Fixed some html-attributes and Adapter.reload argument parsing. diff --git a/bower.json b/bower.json index 011c229d..e3d7c603 100644 --- a/bower.json +++ b/bower.json @@ -1,7 +1,7 @@ { "name": "angular-ui-scroll", "description": "AngularJS infinite scrolling module", - "version": "1.7.3", + "version": "1.7.4", "main": "./dist/ui-scroll.js", "homepage": "https://github.com/angular-ui/ui-scroll.git", "license": "MIT", diff --git a/package.json b/package.json index 90f7b02e..c9f3ef8c 100644 --- a/package.json +++ b/package.json @@ -1,7 +1,7 @@ { "name": "angular-ui-scroll", "description": "AngularJS infinite scrolling module", - "version": "1.7.3", + "version": "1.7.4", "src": "./src/", "public": "./dist/", "main": "./dist/ui-scroll.js", From fdcca3d8ed1121569967e72c1af66fd72c79f32b Mon Sep 17 00:00:00 2001 From: dhilt Date: Wed, 19 Jun 2019 13:54:08 +0300 Subject: [PATCH 09/18] v1.7.4 build --- dist/ui-scroll-grid.js | 2 +- dist/ui-scroll.js | 5 +++-- dist/ui-scroll.js.map | 2 +- dist/ui-scroll.min.js | 2 +- dist/ui-scroll.min.js.map | 2 +- 5 files changed, 7 insertions(+), 6 deletions(-) diff --git a/dist/ui-scroll-grid.js b/dist/ui-scroll-grid.js index f69f8807..5998a5a5 100644 --- a/dist/ui-scroll-grid.js +++ b/dist/ui-scroll-grid.js @@ -1,7 +1,7 @@ /*! * angular-ui-scroll * https://github.com/angular-ui/ui-scroll - * Version: 1.7.3 -- 2019-05-27T16:57:07.461Z + * Version: 1.7.4 -- 2019-06-19T10:49:07.005Z * License: MIT */ /******/ (function(modules) { // webpackBootstrap diff --git a/dist/ui-scroll.js b/dist/ui-scroll.js index 6a791810..55f97859 100644 --- a/dist/ui-scroll.js +++ b/dist/ui-scroll.js @@ -1,7 +1,7 @@ /*! * angular-ui-scroll * https://github.com/angular-ui/ui-scroll - * Version: 1.7.3 -- 2019-05-27T16:57:07.461Z + * Version: 1.7.4 -- 2019-06-19T10:49:07.005Z * License: MIT */ /******/ (function(modules) { // webpackBootstrap @@ -1250,7 +1250,8 @@ function () { angular.module('ui.scroll', []).constant('JQLiteExtras', jqLiteExtras_JQLiteExtras).run(['JQLiteExtras', function (JQLiteExtras) { - !window.jQuery ? new JQLiteExtras().registerFor(angular.element) : null; + var elt = angular.element; + !(window.jQuery && elt.fn && elt.fn.jquery) ? new JQLiteExtras().registerFor(elt) : null; ElementRoutines.addCSSRules(); }]).directive('uiScrollViewport', function () { return { diff --git 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\t\t__webpack_require__.r(ns);\n \t\tObject.defineProperty(ns, 'default', { enumerable: true, value: value });\n \t\tif(mode & 2 && typeof value != 'string') for(var key in value) __webpack_require__.d(ns, key, function(key) { return value[key]; }.bind(null, key));\n \t\treturn ns;\n \t};\n\n \t// getDefaultExport function for compatibility with non-harmony modules\n \t__webpack_require__.n = function(module) {\n \t\tvar getter = module && module.__esModule ?\n \t\t\tfunction getDefault() { return module['default']; } :\n \t\t\tfunction getModuleExports() { return module; };\n \t\t__webpack_require__.d(getter, 'a', getter);\n \t\treturn getter;\n \t};\n\n \t// Object.prototype.hasOwnProperty.call\n \t__webpack_require__.o = function(object, property) { return Object.prototype.hasOwnProperty.call(object, property); };\n\n \t// __webpack_public_path__\n \t__webpack_require__.p = \"\";\n\n\n \t// Load entry module and return exports\n \treturn __webpack_require__(__webpack_require__.s = 1);\n","/*!\r\n globals: angular, window\r\n List of used element methods available in JQuery but not in JQuery Lite\r\n element.before(elem)\r\n element.height()\r\n element.outerHeight(true)\r\n element.height(value) = only for Top/Bottom padding elements\r\n element.scrollTop()\r\n element.scrollTop(value)\r\n */\r\n\r\nexport default class JQLiteExtras {\r\n\r\n registerFor(element) {\r\n let convertToPx, css, getStyle, isWindow;\r\n // angular implementation blows up if elem is the window\r\n css = angular.element.prototype.css;\r\n\r\n element.prototype.css = function (name, value) {\r\n let self = this;\r\n let elem = self[0];\r\n if (!(!elem || elem.nodeType === 3 || elem.nodeType === 8 || !elem.style)) {\r\n return css.call(self, name, value);\r\n }\r\n };\r\n\r\n // as defined in angularjs v1.0.5\r\n isWindow = (obj) => obj && obj.document && obj.location && obj.alert && obj.setInterval;\r\n\r\n function scrollTo(self, direction, value) {\r\n let elem = self[0];\r\n let [method, prop, preserve] = {\r\n top: [\r\n 'scrollTop',\r\n 'pageYOffset',\r\n 'scrollLeft'\r\n ],\r\n left: [\r\n 'scrollLeft',\r\n 'pageXOffset',\r\n 'scrollTop'\r\n ]\r\n }[direction];\r\n\r\n const isValueDefined = typeof value !== 'undefined';\r\n if (isWindow(elem)) {\r\n if (isValueDefined) {\r\n return elem.scrollTo(self[preserve].call(self), value);\r\n }\r\n return (prop in elem) ? elem[prop] : elem.document.documentElement[method];\r\n } else {\r\n if (isValueDefined) {\r\n elem[method] = value;\r\n }\r\n return elem[method];\r\n }\r\n }\r\n\r\n if (window.getComputedStyle) {\r\n getStyle = (elem) => window.getComputedStyle(elem, null);\r\n convertToPx = (elem, value) => parseFloat(value);\r\n } else {\r\n getStyle = (elem) => elem.currentStyle;\r\n convertToPx = (elem, value) => {\r\n let left, result, rs, rsLeft, style;\r\n let core_pnum = /[+-]?(?:\\d*\\.|)\\d+(?:[eE][+-]?\\d+|)/.source;\r\n let rnumnonpx = new RegExp('^(' + core_pnum + ')(?!px)[a-z%]+$', 'i');\r\n\r\n if (!rnumnonpx.test(value)) {\r\n return parseFloat(value);\r\n }\r\n\r\n // ported from JQuery\r\n style = elem.style;\r\n left = style.left;\r\n rs = elem.runtimeStyle;\r\n rsLeft = rs && rs.left;\r\n if (rs) {\r\n rs.left = style.left;\r\n }\r\n // put in the new values to get a computed style out\r\n style.left = value;\r\n result = style.pixelLeft;\r\n style.left = left;\r\n if (rsLeft) {\r\n rs.left = rsLeft;\r\n }\r\n return result;\r\n };\r\n }\r\n\r\n function getMeasurements(elem, measure) {\r\n let base, borderA, borderB, computedMarginA, computedMarginB, computedStyle, dirA, dirB, marginA, marginB, paddingA, paddingB;\r\n\r\n if (isWindow(elem)) {\r\n base = document.documentElement[{height: 'clientHeight', width: 'clientWidth'}[measure]];\r\n\r\n return {\r\n base: base,\r\n padding: 0,\r\n border: 0,\r\n margin: 0\r\n };\r\n }\r\n\r\n // Start with offset property\r\n [\r\n base,\r\n dirA,\r\n dirB\r\n ] = {\r\n width: [\r\n elem.offsetWidth,\r\n 'Left',\r\n 'Right'\r\n ],\r\n height: [\r\n elem.offsetHeight,\r\n 'Top',\r\n 'Bottom'\r\n ]\r\n }[measure];\r\n\r\n computedStyle = getStyle(elem);\r\n paddingA = convertToPx(elem, computedStyle['padding' + dirA]) || 0;\r\n paddingB = convertToPx(elem, computedStyle['padding' + dirB]) || 0;\r\n borderA = convertToPx(elem, computedStyle['border' + dirA + 'Width']) || 0;\r\n borderB = convertToPx(elem, computedStyle['border' + dirB + 'Width']) || 0;\r\n computedMarginA = computedStyle['margin' + dirA];\r\n computedMarginB = computedStyle['margin' + dirB];\r\n\r\n // I do not care for width for now, so this hack is irrelevant\r\n // if ( !supportsPercentMargin )\r\n // computedMarginA = hackPercentMargin( elem, computedStyle, computedMarginA )\r\n // computedMarginB = hackPercentMargin( elem, computedStyle, computedMarginB )\r\n marginA = convertToPx(elem, computedMarginA) || 0;\r\n marginB = convertToPx(elem, computedMarginB) || 0;\r\n\r\n return {\r\n base: base,\r\n padding: paddingA + paddingB,\r\n border: borderA + borderB,\r\n margin: marginA + marginB\r\n };\r\n }\r\n\r\n function getWidthHeight(elem, direction, measure) {\r\n let computedStyle, result;\r\n\r\n let measurements = getMeasurements(elem, direction);\r\n\r\n if (measurements.base > 0) {\r\n return {\r\n base: measurements.base - measurements.padding - measurements.border,\r\n outer: measurements.base,\r\n outerfull: measurements.base + measurements.margin\r\n }[measure];\r\n }\r\n\r\n // Fall back to computed then uncomputed css if necessary\r\n computedStyle = getStyle(elem);\r\n result = computedStyle[direction];\r\n\r\n if (result < 0 || result === null) {\r\n result = elem.style[direction] || 0;\r\n }\r\n\r\n // Normalize \"\", auto, and prepare for extra\r\n result = parseFloat(result) || 0;\r\n\r\n return {\r\n base: result - measurements.padding - measurements.border,\r\n outer: result,\r\n outerfull: result + measurements.padding + measurements.border + measurements.margin\r\n }[measure];\r\n }\r\n\r\n // define missing methods\r\n return angular.forEach({\r\n before(newElem) {\r\n var children, elem, i, j, parent, ref, self;\r\n self = this;\r\n elem = self[0];\r\n parent = self.parent();\r\n children = parent.contents();\r\n if (children[0] === elem) {\r\n return parent.prepend(newElem);\r\n } else {\r\n for (i = j = 1, ref = children.length - 1; 1 <= ref ? j <= ref : j >= ref; i = 1 <= ref ? ++j : --j) {\r\n if (children[i] === elem) {\r\n angular.element(children[i - 1]).after(newElem);\r\n return;\r\n }\r\n }\r\n throw new Error('invalid DOM structure ' + elem.outerHTML);\r\n }\r\n },\r\n height (value){\r\n var self;\r\n self = this;\r\n if (typeof value !== 'undefined') {\r\n if (angular.isNumber(value)) {\r\n value = value + 'px';\r\n }\r\n return css.call(self, 'height', value);\r\n } else {\r\n return getWidthHeight(this[0], 'height', 'base');\r\n }\r\n },\r\n outerHeight(option) {\r\n return getWidthHeight(this[0], 'height', option ? 'outerfull' : 'outer');\r\n },\r\n outerWidth(option) {\r\n return getWidthHeight(this[0], 'width', option ? 'outerfull' : 'outer');\r\n },\r\n\r\n /*\r\n The offset setter method is not implemented\r\n */\r\n offset(value) {\r\n let docElem, win;\r\n let self = this;\r\n let box = {\r\n top: 0,\r\n left: 0\r\n };\r\n let elem = self[0];\r\n let doc = elem && elem.ownerDocument;\r\n\r\n if (arguments.length) {\r\n if (value === undefined) {\r\n return self;\r\n }\r\n // TODO: implement setter\r\n throw new Error('offset setter method is not implemented');\r\n }\r\n\r\n if (!doc) {\r\n return;\r\n }\r\n\r\n docElem = doc.documentElement;\r\n\r\n // TODO: Make sure it's not a disconnected DOM node\r\n\r\n if (elem.getBoundingClientRect != null) {\r\n box = elem.getBoundingClientRect();\r\n }\r\n\r\n win = doc.defaultView || doc.parentWindow;\r\n\r\n return {\r\n top: box.top + (win.pageYOffset || docElem.scrollTop) - (docElem.clientTop || 0),\r\n left: box.left + (win.pageXOffset || docElem.scrollLeft) - (docElem.clientLeft || 0)\r\n };\r\n },\r\n scrollTop(value) {\r\n return scrollTo(this, 'top', value);\r\n },\r\n scrollLeft(value) {\r\n return scrollTo(this, 'left', value);\r\n }\r\n }, (value, key) => {\r\n if (!element.prototype[key]) {\r\n return element.prototype[key] = value;\r\n }\r\n });\r\n }\r\n\r\n}\r\n","const hideClassToken = 'ng-ui-scroll-hide';\r\n\r\nexport default class ElementRoutines {\r\n\r\n static addCSSRules() {\r\n const selector = '.' + hideClassToken;\r\n const rules = 'display: none';\r\n const sheet = document.styleSheets[0];\r\n let index;\r\n try {\r\n index = sheet.cssRules.length;\r\n } catch (err) {\r\n index = 0;\r\n }\r\n if('insertRule' in sheet) {\r\n sheet.insertRule(selector + '{' + rules + '}', index);\r\n }\r\n else if('addRule' in sheet) {\r\n sheet.addRule(selector, rules, index);\r\n }\r\n }\r\n\r\n constructor($injector, $q) {\r\n this.$animate = ($injector.has && $injector.has('$animate')) ? $injector.get('$animate') : null;\r\n this.isAngularVersionLessThen1_3 = angular.version.major === 1 && angular.version.minor < 3;\r\n this.$q = $q;\r\n }\r\n\r\n hideElement(wrapper) {\r\n wrapper.element.addClass(hideClassToken);\r\n }\r\n\r\n showElement(wrapper) {\r\n wrapper.element.removeClass(hideClassToken);\r\n }\r\n\r\n insertElement(newElement, previousElement) {\r\n previousElement.after(newElement);\r\n return [];\r\n }\r\n\r\n removeElement(wrapper) {\r\n wrapper.element.remove();\r\n wrapper.scope.$destroy();\r\n return [];\r\n }\r\n\r\n insertElementAnimated(newElement, previousElement) {\r\n if (!this.$animate) {\r\n return this.insertElement(newElement, previousElement);\r\n }\r\n\r\n if (this.isAngularVersionLessThen1_3) {\r\n const deferred = this.$q.defer();\r\n // no need for parent - previous element is never null\r\n this.$animate.enter(newElement, null, previousElement, () => deferred.resolve());\r\n\r\n return [deferred.promise];\r\n }\r\n\r\n // no need for parent - previous element is never null\r\n return [this.$animate.enter(newElement, null, previousElement)];\r\n }\r\n\r\n removeElementAnimated(wrapper) {\r\n if (!this.$animate) {\r\n return this.removeElement(wrapper);\r\n }\r\n\r\n if (this.isAngularVersionLessThen1_3) {\r\n const deferred = this.$q.defer();\r\n this.$animate.leave(wrapper.element, () => {\r\n wrapper.scope.$destroy();\r\n return deferred.resolve();\r\n });\r\n\r\n return [deferred.promise];\r\n }\r\n\r\n return [(this.$animate.leave(wrapper.element)).then(() => wrapper.scope.$destroy())];\r\n }\r\n}","export default function ScrollBuffer(elementRoutines, bufferSize, startIndex) {\r\n const buffer = Object.create(Array.prototype);\r\n\r\n angular.extend(buffer, {\r\n size: bufferSize,\r\n\r\n reset(startIndex) {\r\n buffer.remove(0, buffer.length);\r\n buffer.eof = false;\r\n buffer.bof = false;\r\n buffer.first = startIndex;\r\n buffer.next = startIndex;\r\n buffer.minIndex = startIndex;\r\n buffer.maxIndex = startIndex;\r\n buffer.minIndexUser = null;\r\n buffer.maxIndexUser = null;\r\n },\r\n\r\n append(items) {\r\n items.forEach((item) => {\r\n ++buffer.next;\r\n buffer.insert('append', item);\r\n });\r\n buffer.maxIndex = buffer.eof ? buffer.next - 1 : Math.max(buffer.next - 1, buffer.maxIndex);\r\n },\r\n\r\n prepend(items) {\r\n items.reverse().forEach((item) => {\r\n --buffer.first;\r\n buffer.insert('prepend', item);\r\n });\r\n buffer.minIndex = buffer.bof ? buffer.minIndex = buffer.first : Math.min(buffer.first, buffer.minIndex);\r\n },\r\n\r\n /**\r\n * inserts wrapped element in the buffer\r\n * the first argument is either operation keyword (see below) or a number for operation 'insert'\r\n * for insert the number is the index for the buffer element the new one have to be inserted after\r\n * operations: 'append', 'prepend', 'insert', 'remove', 'update', 'none'\r\n */\r\n insert(operation, item, isTop) {\r\n const wrapper = {\r\n item: item\r\n };\r\n\r\n if (operation % 1 === 0) {// it is an insert\r\n wrapper.op = 'insert';\r\n buffer.splice(operation, 0, wrapper);\r\n if(isTop) {\r\n buffer.first--;\r\n }\r\n else {\r\n buffer.next++;\r\n }\r\n } else {\r\n wrapper.op = operation;\r\n switch (operation) {\r\n case 'append':\r\n buffer.push(wrapper);\r\n break;\r\n case 'prepend':\r\n buffer.unshift(wrapper);\r\n break;\r\n }\r\n }\r\n },\r\n\r\n // removes elements from buffer\r\n remove(arg1, arg2) {\r\n if (angular.isNumber(arg1)) {\r\n // removes items from arg1 (including) through arg2 (excluding)\r\n for (let i = arg1; i < arg2; i++) {\r\n elementRoutines.removeElement(buffer[i]);\r\n }\r\n return buffer.splice(arg1, arg2 - arg1);\r\n }\r\n // removes single item(wrapper) from the buffer\r\n buffer.splice(buffer.indexOf(arg1), 1);\r\n if(arg1._op === 'isTop' && buffer.first === this.getAbsMinIndex()) {\r\n this.incrementMinIndex();\r\n }\r\n else {\r\n this.decrementMaxIndex();\r\n }\r\n if(arg1._op === 'isTop') {\r\n buffer.first++;\r\n }\r\n else {\r\n buffer.next--;\r\n }\r\n if(!buffer.length) {\r\n buffer.first = 1;\r\n buffer.next = 1;\r\n }\r\n\r\n return elementRoutines.removeElementAnimated(arg1);\r\n },\r\n\r\n incrementMinIndex() {\r\n if(buffer.minIndexUser !== null) {\r\n if(buffer.minIndex > buffer.minIndexUser) {\r\n buffer.minIndexUser++;\r\n return;\r\n }\r\n if(buffer.minIndex === buffer.minIndexUser) {\r\n buffer.minIndexUser++;\r\n }\r\n }\r\n buffer.minIndex++;\r\n },\r\n\r\n decrementMaxIndex() {\r\n if(buffer.maxIndexUser !== null && buffer.maxIndex <= buffer.maxIndexUser) {\r\n buffer.maxIndexUser--;\r\n }\r\n buffer.maxIndex--;\r\n },\r\n\r\n getAbsMinIndex() {\r\n if(buffer.minIndexUser !== null) {\r\n return Math.min(buffer.minIndexUser, buffer.minIndex);\r\n }\r\n return buffer.minIndex;\r\n },\r\n\r\n getAbsMaxIndex() {\r\n if(buffer.maxIndexUser !== null) {\r\n return Math.max(buffer.maxIndexUser, buffer.maxIndex);\r\n }\r\n return buffer.maxIndex;\r\n },\r\n\r\n effectiveHeight(elements) {\r\n if (!elements.length) {\r\n return 0;\r\n }\r\n let top = Number.MAX_VALUE;\r\n let bottom = Number.NEGATIVE_INFINITY;\r\n elements.forEach((wrapper) => {\r\n if (wrapper.element[0].offsetParent) {\r\n // element style is not display:none\r\n top = Math.min(top, wrapper.element.offset().top);\r\n bottom = Math.max(bottom, wrapper.element.offset().top + wrapper.element.outerHeight(true));\r\n }\r\n });\r\n return Math.max(0, bottom - top);\r\n }\r\n\r\n });\r\n\r\n buffer.reset(startIndex);\r\n\r\n return buffer;\r\n}\r\n","// Can't just extend the Array, due to Babel does not support built-in classes extending\r\n// This solution was taken from https://stackoverflow.com/questions/46897414/es6-class-extends-array-workaround-for-es5-babel-transpile\r\nclass CacheProto {\r\n add(item) {\r\n for (let i = this.length - 1; i >= 0; i--) {\r\n if (this[i].index === item.scope.$index) {\r\n this[i].height = item.element.outerHeight();\r\n return;\r\n }\r\n }\r\n this.push({\r\n index: item.scope.$index,\r\n height: item.element.outerHeight()\r\n });\r\n this.sort((a, b) => ((a.index < b.index) ? -1 : ((a.index > b.index) ? 1 : 0)));\r\n }\r\n\r\n remove(argument, _isTop) {\r\n const index = argument % 1 === 0 ? argument : argument.scope.$index;\r\n const isTop = argument % 1 === 0 ? _isTop : argument._op === 'isTop';\r\n for (let i = this.length - 1; i >= 0; i--) {\r\n if (this[i].index === index) {\r\n this.splice(i, 1);\r\n break;\r\n }\r\n }\r\n if(!isTop) {\r\n for (let i = this.length - 1; i >= 0; i--) {\r\n if (this[i].index > index) {\r\n this[i].index--;\r\n }\r\n }\r\n }\r\n }\r\n\r\n clear() {\r\n this.length = 0;\r\n }\r\n}\r\n\r\nfunction Cache() {\r\n const instance = [];\r\n instance.push.apply(instance, arguments);\r\n Object.setPrototypeOf(instance, Cache.prototype);\r\n return instance;\r\n}\r\nCache.prototype = Object.create(Array.prototype);\r\nObject.getOwnPropertyNames(CacheProto.prototype).forEach(methodName =>\r\n Cache.prototype[methodName] = CacheProto.prototype[methodName]\r\n);\r\n\r\nfunction generateElement(template) {\r\n if(template.nodeType !== Node.ELEMENT_NODE) {\r\n throw new Error('ui-scroll directive requires an Element node for templating the view');\r\n }\r\n let element;\r\n switch (template.tagName.toLowerCase()) {\r\n case 'dl':\r\n throw new Error(`ui-scroll directive does not support <${template.tagName}> as a repeating tag: ${template.outerHTML}`);\r\n case 'tr':\r\n let table = angular.element('
    ');\r\n element = table.find('tr');\r\n break;\r\n case 'li':\r\n element = angular.element('
  • ');\r\n break;\r\n default:\r\n element = angular.element('
    ');\r\n }\r\n return element;\r\n}\r\n\r\nclass Padding {\r\n constructor(template) {\r\n this.element = generateElement(template);\r\n this.cache = new Cache();\r\n }\r\n\r\n height() {\r\n return this.element.height.apply(this.element, arguments);\r\n }\r\n}\r\n\r\nexport default Padding;","import Padding from './padding';\r\n\r\nexport default function Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding) {\r\n let topPadding = null;\r\n let bottomPadding = null;\r\n const viewport = viewportController && viewportController.viewport ? viewportController.viewport : angular.element(window);\r\n const container = viewportController && viewportController.container ? viewportController.container : undefined;\r\n const scope = viewportController && viewportController.scope ? viewportController.scope : $rootScope;\r\n\r\n viewport.css({\r\n 'overflow-anchor': 'none',\r\n 'overflow-y': 'auto',\r\n 'display': 'block'\r\n });\r\n\r\n function bufferPadding() {\r\n return viewport.outerHeight() * padding; // some extra space to initiate preload\r\n }\r\n\r\n angular.extend(viewport, {\r\n getScope() {\r\n return scope;\r\n },\r\n\r\n createPaddingElements(template) {\r\n topPadding = new Padding(template);\r\n bottomPadding = new Padding(template);\r\n element.before(topPadding.element);\r\n element.after(bottomPadding.element);\r\n topPadding.height(0);\r\n bottomPadding.height(0);\r\n },\r\n\r\n applyContainerStyle() {\r\n if (!container) {\r\n return true;\r\n }\r\n if(container !== viewport) {\r\n viewport.css('height', window.getComputedStyle(container[0]).height);\r\n }\r\n return viewport.height() > 0;\r\n },\r\n\r\n bottomDataPos() {\r\n let scrollHeight = viewport[0].scrollHeight;\r\n scrollHeight = scrollHeight != null ? scrollHeight : viewport[0].document.documentElement.scrollHeight;\r\n return scrollHeight - bottomPadding.height();\r\n },\r\n\r\n topDataPos() {\r\n return topPadding.height();\r\n },\r\n\r\n bottomVisiblePos() {\r\n return viewport.scrollTop() + viewport.outerHeight();\r\n },\r\n\r\n topVisiblePos() {\r\n return viewport.scrollTop();\r\n },\r\n\r\n insertElement(e, sibling) {\r\n return elementRoutines.insertElement(e, sibling || topPadding.element);\r\n },\r\n\r\n insertElementAnimated(e, sibling) {\r\n return elementRoutines.insertElementAnimated(e, sibling || topPadding.element);\r\n },\r\n\r\n shouldLoadBottom() {\r\n return !buffer.eof && viewport.bottomDataPos() < viewport.bottomVisiblePos() + bufferPadding();\r\n },\r\n\r\n clipBottom() {\r\n // clip the invisible items off the bottom\r\n let overage = 0;\r\n let overageHeight = 0;\r\n let itemHeight = 0;\r\n let emptySpaceHeight = viewport.bottomDataPos() - viewport.bottomVisiblePos() - bufferPadding();\r\n\r\n for (let i = buffer.length - 1; i >= 0; i--) {\r\n itemHeight = buffer[i].element.outerHeight(true);\r\n if (overageHeight + itemHeight > emptySpaceHeight) {\r\n break;\r\n }\r\n bottomPadding.cache.add(buffer[i]);\r\n overageHeight += itemHeight;\r\n overage++;\r\n }\r\n\r\n if (overage > 0) {\r\n buffer.eof = false;\r\n buffer.remove(buffer.length - overage, buffer.length);\r\n buffer.next -= overage;\r\n viewport.adjustPaddings();\r\n }\r\n },\r\n\r\n shouldLoadTop() {\r\n return !buffer.bof && (viewport.topDataPos() > viewport.topVisiblePos() - bufferPadding());\r\n },\r\n\r\n clipTop() {\r\n // clip the invisible items off the top\r\n let overage = 0;\r\n let overageHeight = 0;\r\n let itemHeight = 0;\r\n let emptySpaceHeight = viewport.topVisiblePos() - viewport.topDataPos() - bufferPadding();\r\n\r\n for (let i = 0; i < buffer.length; i++) {\r\n itemHeight = buffer[i].element.outerHeight(true);\r\n if (overageHeight + itemHeight > emptySpaceHeight) {\r\n break;\r\n }\r\n topPadding.cache.add(buffer[i]);\r\n overageHeight += itemHeight;\r\n overage++;\r\n }\r\n\r\n if (overage > 0) {\r\n // we need to adjust top padding element before items are removed from top\r\n // to avoid strange behaviour of scroll bar during remove top items when we are at the very bottom\r\n topPadding.height(topPadding.height() + overageHeight);\r\n buffer.bof = false;\r\n buffer.remove(0, overage);\r\n buffer.first += overage;\r\n }\r\n },\r\n\r\n adjustPaddings() {\r\n if (!buffer.length) {\r\n return;\r\n }\r\n\r\n // precise heights calculation based on items that are in buffer or that were in buffer once\r\n const visibleItemsHeight = buffer.reduce((summ, item) => summ + item.element.outerHeight(true), 0);\r\n\r\n let topPaddingHeight = 0, topCount = 0;\r\n topPadding.cache.forEach(item => {\r\n if(item.index < buffer.first) {\r\n topPaddingHeight += item.height;\r\n topCount++;\r\n }\r\n });\r\n\r\n let bottomPaddingHeight = 0, bottomCount = 0;\r\n bottomPadding.cache.forEach(item => {\r\n if(item.index >= buffer.next) {\r\n bottomPaddingHeight += item.height;\r\n bottomCount++;\r\n }\r\n });\r\n\r\n const totalHeight = visibleItemsHeight + topPaddingHeight + bottomPaddingHeight;\r\n const averageItemHeight = totalHeight / (topCount + bottomCount + buffer.length);\r\n\r\n // average heights calculation, items that have never been reached\r\n let adjustTopPadding = buffer.minIndexUser !== null && buffer.minIndex > buffer.minIndexUser;\r\n let adjustBottomPadding = buffer.maxIndexUser !== null && buffer.maxIndex < buffer.maxIndexUser;\r\n let topPaddingHeightAdd = adjustTopPadding ? (buffer.minIndex - buffer.minIndexUser) * averageItemHeight : 0;\r\n let bottomPaddingHeightAdd = adjustBottomPadding ? (buffer.maxIndexUser - buffer.maxIndex) * averageItemHeight : 0;\r\n\r\n // paddings combine adjustment\r\n topPadding.height(topPaddingHeight + topPaddingHeightAdd);\r\n bottomPadding.height(bottomPaddingHeight + bottomPaddingHeightAdd);\r\n },\r\n\r\n onAfterMinIndexSet(topPaddingHeightOld) {\r\n // additional scrollTop adjustment in case of datasource.minIndex external set\r\n if (buffer.minIndexUser !== null && buffer.minIndex > buffer.minIndexUser) {\r\n let diff = topPadding.height() - topPaddingHeightOld;\r\n viewport.scrollTop(viewport.scrollTop() + diff);\r\n while((diff -= viewport.scrollTop()) > 0) {\r\n bottomPadding.height(bottomPadding.height() + diff);\r\n viewport.scrollTop(viewport.scrollTop() + diff);\r\n }\r\n }\r\n },\r\n\r\n onAfterPrepend(updates) {\r\n if (!updates.prepended.length)\r\n return;\r\n const height = buffer.effectiveHeight(updates.prepended);\r\n const paddingHeight = topPadding.height() - height;\r\n if (paddingHeight >= 0) {\r\n topPadding.height(paddingHeight);\r\n }\r\n else {\r\n topPadding.height(0);\r\n viewport.scrollTop(viewport.scrollTop() - paddingHeight);\r\n }\r\n },\r\n\r\n resetTopPadding() {\r\n topPadding.height(0);\r\n topPadding.cache.clear();\r\n },\r\n\r\n resetBottomPadding() {\r\n bottomPadding.height(0);\r\n bottomPadding.cache.clear();\r\n },\r\n\r\n removeCacheItem(item, isTop) {\r\n topPadding.cache.remove(item, isTop);\r\n bottomPadding.cache.remove(item, isTop);\r\n },\r\n\r\n removeItem(item) {\r\n this.removeCacheItem(item);\r\n return buffer.remove(item);\r\n }\r\n });\r\n\r\n return viewport;\r\n}\r\n","class Adapter {\r\n\r\n constructor($scope, $parse, $attr, viewport, buffer, doAdjust, reload) {\r\n this.$parse = $parse;\r\n this.$attr = $attr;\r\n this.viewport = viewport;\r\n this.buffer = buffer;\r\n\r\n this.doAdjust = doAdjust;\r\n this.reload = reload;\r\n\r\n this.isLoading = false;\r\n this.disabled = false;\r\n\r\n const viewportScope = viewport.getScope();\r\n this.startScope = viewportScope.$parent ? viewportScope : $scope;\r\n\r\n this.publicContext = {};\r\n this.assignAdapter($attr.adapter);\r\n this.generatePublicContext();\r\n }\r\n\r\n assignAdapter(adapterAttr) {\r\n if (!adapterAttr || !(adapterAttr = adapterAttr.replace(/^\\s+|\\s+$/gm, ''))) {\r\n return;\r\n }\r\n let adapterOnScope;\r\n\r\n try {\r\n this.$parse(adapterAttr).assign(this.startScope, {});\r\n adapterOnScope = this.$parse(adapterAttr)(this.startScope);\r\n }\r\n catch (error) {\r\n error.message = `Angular ui-scroll Adapter assignment exception.\\n` +\r\n `Can't parse \"${adapterAttr}\" expression.\\n` +\r\n error.message;\r\n throw error;\r\n }\r\n\r\n angular.extend(adapterOnScope, this.publicContext);\r\n this.publicContext = adapterOnScope;\r\n }\r\n\r\n generatePublicContext() {\r\n // these methods will be accessible out of ui-scroll via user defined adapter\r\n const publicMethods = ['reload', 'applyUpdates', 'append', 'prepend', 'isBOF', 'isEOF', 'isEmpty'];\r\n for (let i = publicMethods.length - 1; i >= 0; i--) {\r\n this.publicContext[publicMethods[i]] = this[publicMethods[i]].bind(this);\r\n }\r\n\r\n // these read-only props will be accessible out of ui-scroll via user defined adapter\r\n const publicProps = ['isLoading', 'topVisible', 'topVisibleElement', 'topVisibleScope', 'bottomVisible', 'bottomVisibleElement', 'bottomVisibleScope'];\r\n for (let i = publicProps.length - 1; i >= 0; i--) {\r\n let property, attr = this.$attr[publicProps[i]];\r\n Object.defineProperty(this, publicProps[i], {\r\n get: () => property,\r\n set: (value) => {\r\n property = value;\r\n this.publicContext[publicProps[i]] = value;\r\n if (attr) {\r\n this.$parse(attr).assign(this.startScope, value);\r\n }\r\n }\r\n });\r\n }\r\n\r\n // non-read-only public property\r\n Object.defineProperty(this.publicContext, 'disabled', {\r\n get: () => this.disabled,\r\n set: (value) => (!(this.disabled = value)) ? this.doAdjust() : null\r\n });\r\n }\r\n\r\n loading(value) {\r\n this.isLoading = value;\r\n }\r\n\r\n isBOF() {\r\n return this.buffer.bof;\r\n }\r\n\r\n isEOF() {\r\n return this.buffer.eof;\r\n }\r\n\r\n isEmpty() {\r\n return !this.buffer.length;\r\n }\r\n\r\n append(newItems) {\r\n this.buffer.append(newItems);\r\n this.doAdjust();\r\n this.viewport.clipTop();\r\n this.viewport.clipBottom();\r\n }\r\n\r\n prepend(newItems) {\r\n this.buffer.prepend(newItems);\r\n this.doAdjust();\r\n this.viewport.clipTop();\r\n this.viewport.clipBottom();\r\n }\r\n\r\n applyUpdates(arg1, arg2) {\r\n if (typeof arg1 === 'function') {\r\n this.applyUpdatesFunc(arg1);\r\n } else {\r\n this.applyUpdatesIndex(arg1, arg2);\r\n }\r\n this.doAdjust();\r\n }\r\n\r\n applyUpdatesFunc(cb) {\r\n this.buffer.slice(0).forEach((wrapper) => {\r\n // we need to do it on the buffer clone, because buffer content\r\n // may change as we iterate through\r\n this.applyUpdate(wrapper, cb(wrapper.item, wrapper.scope, wrapper.element));\r\n });\r\n }\r\n\r\n applyUpdatesIndex(index, newItems) {\r\n if (index % 1 !== 0) {\r\n throw new Error('applyUpdates - ' + index + ' is not a valid index (should be an integer)');\r\n }\r\n const _index = index - this.buffer.first;\r\n\r\n // apply updates only within buffer\r\n if (_index >= 0 && _index < this.buffer.length) {\r\n this.applyUpdate(this.buffer[_index], newItems);\r\n }\r\n // out-of-buffer case: deletion may affect Paddings\r\n else if(index >= this.buffer.getAbsMinIndex() && index <= this.buffer.getAbsMaxIndex()) {\r\n if(angular.isArray(newItems) && !newItems.length) {\r\n this.viewport.removeCacheItem(index, index === this.buffer.minIndex);\r\n if(index === this.buffer.getAbsMinIndex()) {\r\n this.buffer.incrementMinIndex();\r\n }\r\n else {\r\n this.buffer.decrementMaxIndex();\r\n }\r\n }\r\n }\r\n }\r\n\r\n applyUpdate(wrapper, newItems) {\r\n if (!angular.isArray(newItems)) {\r\n return;\r\n }\r\n let position = this.buffer.indexOf(wrapper);\r\n if (!newItems.reverse().some(newItem => newItem === wrapper.item)) {\r\n wrapper.op = 'remove';\r\n if(position === 0 && !newItems.length) {\r\n wrapper._op = 'isTop'; // to catch \"first\" edge case on remove\r\n }\r\n }\r\n newItems.forEach((newItem) => {\r\n if (newItem === wrapper.item) {\r\n position--;\r\n } else {\r\n // 3 parameter (isTop) is to catch \"first\" edge case on insert\r\n this.buffer.insert(position + 1, newItem, position === -1);\r\n }\r\n });\r\n }\r\n\r\n calculateProperties() {\r\n let rowTop = null, topHeight = 0;\r\n let topDone = false, bottomDone = false;\r\n const length = this.buffer.length;\r\n\r\n for (let i = 0; i < length; i++) {\r\n const item = this.buffer[i];\r\n const itemTop = item.element.offset().top;\r\n\r\n if (rowTop !== itemTop) { // a new row condition\r\n const itemHeight = item.element.outerHeight(true);\r\n const top = this.viewport.topDataPos() + topHeight + itemHeight;\r\n\r\n if (!topDone && top > this.viewport.topVisiblePos()) {\r\n topDone = true;\r\n this['topVisible'] = item.item;\r\n this['topVisibleElement'] = item.element;\r\n this['topVisibleScope'] = item.scope;\r\n }\r\n if (!bottomDone && (top >= this.viewport.bottomVisiblePos() || (i === length - 1 && this.isEOF()))) {\r\n bottomDone = true;\r\n this['bottomVisible'] = item.item;\r\n this['bottomVisibleElement'] = item.element;\r\n this['bottomVisibleScope'] = item.scope;\r\n }\r\n topHeight += itemHeight;\r\n }\r\n rowTop = itemTop;\r\n\r\n if (topDone && bottomDone) {\r\n break;\r\n }\r\n }\r\n }\r\n\r\n}\r\n\r\nexport default Adapter;\r\n","import JQLiteExtras from './modules/jqLiteExtras';\nimport ElementRoutines from './modules/elementRoutines.js';\nimport ScrollBuffer from './modules/buffer.js';\nimport Viewport from './modules/viewport.js';\nimport Adapter from './modules/adapter.js';\n\nangular.module('ui.scroll', [])\n\n .constant('JQLiteExtras', JQLiteExtras)\n .run(['JQLiteExtras', (JQLiteExtras) => {\n !window.jQuery ? (new JQLiteExtras()).registerFor(angular.element) : null;\n ElementRoutines.addCSSRules();\n }])\n\n .directive('uiScrollViewport', function () {\n return {\n restrict: 'A',\n controller: [\n '$scope',\n '$element',\n function (scope, element) {\n this.container = element;\n this.viewport = element;\n this.scope = scope;\n\n angular.forEach(element.children(), child => {\n if (child.tagName.toLowerCase() === 'tbody') {\n this.viewport = angular.element(child);\n }\n });\n\n return this;\n }\n ]\n };\n })\n\n .directive('uiScroll', [\n '$log',\n '$injector',\n '$rootScope',\n '$timeout',\n '$interval',\n '$q',\n '$parse',\n function (console, $injector, $rootScope, $timeout, $interval, $q, $parse) {\n\n return {\n require: ['?^uiScrollViewport'],\n restrict: 'A',\n transclude: 'element',\n priority: 1000,\n terminal: true,\n link: link\n };\n\n function link($scope, element, $attr, controllers, linker) {\n const match = $attr.uiScroll.match(/^\\s*(\\w+)\\s+in\\s+([(\\w|\\$)\\.]+)\\s*$/);\n if (!match) {\n throw new Error('Expected uiScroll in form of \\'_item_ in _datasource_\\' but got \\'' + $attr.uiScroll + '\\'');\n }\n\n function parseNumber(value, defaultValue, isFloat) {\n if (!isFloat) {\n value = value === null ? defaultValue : Math.floor(value);\n }\n return isNaN(value) ? defaultValue : value;\n }\n\n function parseNumericAttr(value, defaultValue, isFloat) {\n const result = $parse(value)($scope);\n return parseNumber(result, defaultValue, isFloat);\n }\n\n const BUFFER_MIN = 3;\n const BUFFER_DEFAULT = 10;\n const PADDING_MIN = 0.3;\n const PADDING_DEFAULT = 0.5;\n const START_INDEX_DEFAULT = 1;\n const MAX_VIEWPORT_DELAY = 500;\n const VIEWPORT_POLLING_INTERVAL = 50;\n\n let datasource = null;\n const itemName = match[1];\n const datasourceName = match[2];\n const viewportController = controllers[0];\n const bufferSize = Math.max(BUFFER_MIN, parseNumericAttr($attr.bufferSize, BUFFER_DEFAULT));\n const padding = Math.max(PADDING_MIN, parseNumericAttr($attr.padding, PADDING_DEFAULT, true));\n let startIndex = parseNumericAttr($attr.startIndex, START_INDEX_DEFAULT);\n let ridActual = 0; // current data revision id\n let pending = [];\n\n const elementRoutines = new ElementRoutines($injector, $q);\n const buffer = new ScrollBuffer(elementRoutines, bufferSize, startIndex);\n const viewport = new Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding);\n const adapter = new Adapter($scope, $parse, $attr, viewport, buffer, doAdjust, reload);\n\n if (viewportController) {\n viewportController.adapter = adapter;\n }\n\n const isDatasourceValid = () =>\n Object.prototype.toString.call(datasource) === '[object Object]' && typeof datasource.get === 'function';\n\n datasource = $parse(datasourceName)($scope); // try to get datasource on scope\n if (!isDatasourceValid()) {\n datasource = $injector.get(datasourceName); // try to inject datasource as service\n if (!isDatasourceValid()) {\n throw new Error(datasourceName + ' is not a valid datasource');\n }\n }\n\n let onRenderHandlers = [];\n function onRenderHandlersRunner() {\n onRenderHandlers.forEach(handler => handler.run());\n onRenderHandlers = [];\n }\n function persistDatasourceIndex(datasource, propName) {\n let getter;\n // need to postpone min/maxIndexUser processing if the view is empty\n if(angular.isNumber(datasource[propName])) {\n getter = datasource[propName];\n if(angular.isNumber(getter)) {\n onRenderHandlers = onRenderHandlers.filter(handler => handler.id !== propName);\n onRenderHandlers.push({\n id: propName,\n run: () => datasource[propName] = getter\n });\n }\n }\n }\n\n function defineDatasourceIndex(datasource, propName, propUserName) {\n const descriptor = Object.getOwnPropertyDescriptor(datasource, propName);\n if (descriptor && (descriptor.set || descriptor.get)) {\n return;\n }\n let getter;\n persistDatasourceIndex(datasource, propName);\n Object.defineProperty(datasource, propName, {\n set: (value) => {\n getter = value;\n if(pending.length && !buffer.length) {\n persistDatasourceIndex(datasource, propName);\n return;\n }\n buffer[propUserName] = value;\n const topPaddingHeightOld = viewport.topDataPos();\n viewport.adjustPaddings();\n if (propName === 'minIndex') {\n viewport.onAfterMinIndexSet(topPaddingHeightOld);\n }\n },\n get: () => getter\n });\n }\n\n defineDatasourceIndex(datasource, 'minIndex', 'minIndexUser');\n defineDatasourceIndex(datasource, 'maxIndex', 'maxIndexUser');\n\n const fetchNext = (datasource.get.length !== 2) ?\n (success) => datasource.get(buffer.next, bufferSize, success) :\n (success) => {\n datasource.get({\n index: buffer.next,\n append: buffer.length ? buffer[buffer.length - 1].item : void 0,\n count: bufferSize\n }, success);\n };\n\n const fetchPrevious = (datasource.get.length !== 2) ?\n (success) => datasource.get(buffer.first - bufferSize, bufferSize, success) :\n (success) => {\n datasource.get({\n index: buffer.first - bufferSize,\n prepend: buffer.length ? buffer[0].item : void 0,\n count: bufferSize\n }, success);\n };\n\n const initialize = () => {\n let tryCount = 0;\n if(!viewport.applyContainerStyle()) {\n const timer = $interval(() => {\n tryCount++;\n if(viewport.applyContainerStyle()) {\n $interval.cancel(timer);\n doAdjust();\n }\n if(tryCount * VIEWPORT_POLLING_INTERVAL >= MAX_VIEWPORT_DELAY) {\n $interval.cancel(timer);\n throw Error(`ui-scroll directive requires a viewport with non-zero height in ${MAX_VIEWPORT_DELAY}ms`);\n }\n }, VIEWPORT_POLLING_INTERVAL);\n }\n else {\n doAdjust();\n }\n };\n\n /**\n * Build padding elements\n *\n * Calling linker is the only way I found to get access to the tag name of the template\n * to prevent the directive scope from pollution a new scope is created and destroyed\n * right after the builder creation is completed\n */\n linker((clone, scope) => {\n viewport.createPaddingElements(clone[0]);\n // we do not include the clone in the DOM. It means that the nested directives will not\n // be able to reach the parent directives, but in this case it is intentional because we\n // created the clone to access the template tag name\n scope.$destroy();\n clone.remove();\n });\n\n $scope.$on('$destroy', () => {\n unbindEvents();\n viewport.unbind('mousewheel', wheelHandler);\n });\n\n viewport.bind('mousewheel', wheelHandler);\n\n initialize();\n\n /* Private function definitions */\n\n function isInvalid(rid) {\n return (rid && rid !== ridActual) || $scope.$$destroyed;\n }\n\n function bindEvents() {\n viewport.bind('resize', resizeAndScrollHandler);\n viewport.bind('scroll', resizeAndScrollHandler);\n }\n\n function unbindEvents() {\n viewport.unbind('resize', resizeAndScrollHandler);\n viewport.unbind('scroll', resizeAndScrollHandler);\n }\n\n function reload() {\n viewport.resetTopPadding();\n viewport.resetBottomPadding();\n if (arguments.length) {\n startIndex = parseNumber(arguments[0], START_INDEX_DEFAULT, false);\n }\n buffer.reset(startIndex);\n persistDatasourceIndex(datasource, 'minIndex');\n persistDatasourceIndex(datasource, 'maxIndex');\n doAdjust();\n }\n\n function isElementVisible(wrapper) {\n return wrapper.element.height() && wrapper.element[0].offsetParent;\n }\n\n function visibilityWatcher(wrapper) {\n if (isElementVisible(wrapper)) {\n buffer.forEach((item) => {\n if (typeof item.unregisterVisibilityWatcher === 'function') {\n item.unregisterVisibilityWatcher();\n delete item.unregisterVisibilityWatcher;\n }\n });\n if (!pending.length) {\n $timeout(() => doAdjust());\n }\n }\n }\n\n function insertWrapperContent(wrapper, insertAfter) {\n createElement(wrapper, insertAfter, viewport.insertElement);\n if (!isElementVisible(wrapper)) {\n wrapper.unregisterVisibilityWatcher = wrapper.scope.$watch(() => visibilityWatcher(wrapper));\n }\n elementRoutines.hideElement(wrapper); // hide inserted elements before data binding\n }\n\n function createElement(wrapper, insertAfter, insertElement) {\n let promises = null;\n const sibling = (insertAfter > 0) ? buffer[insertAfter - 1].element : undefined;\n linker((clone, scope) => {\n promises = insertElement(clone, sibling);\n wrapper.element = clone;\n wrapper.scope = scope;\n scope[itemName] = wrapper.item;\n });\n // ui-scroll-grid apply\n if (adapter.transform) {\n const tdInitializer = wrapper.scope.uiScrollTdInitializer;\n if (tdInitializer && tdInitializer.linking) {\n adapter.transform(wrapper.scope, wrapper.element);\n } else {\n wrapper.scope.uiScrollTdInitializer = {\n onLink: () => adapter.transform(wrapper.scope, wrapper.element),\n scope: wrapper.scope\n };\n }\n }\n return promises;\n }\n\n function updateDOM() {\n let promises = [];\n const toBePrepended = [];\n const toBeRemoved = [];\n const inserted = [];\n\n buffer.forEach((wrapper, i) => {\n switch (wrapper.op) {\n case 'prepend':\n toBePrepended.unshift(wrapper);\n break;\n case 'append':\n insertWrapperContent(wrapper, i);\n wrapper.op = 'none';\n inserted.push(wrapper);\n break;\n case 'insert':\n promises = promises.concat(createElement(wrapper, i, viewport.insertElementAnimated));\n wrapper.op = 'none';\n inserted.push(wrapper);\n break;\n case 'remove':\n toBeRemoved.push(wrapper);\n }\n });\n\n toBeRemoved.forEach((wrapper) => promises = promises.concat(viewport.removeItem(wrapper)));\n\n if (toBePrepended.length)\n toBePrepended.forEach((wrapper) => {\n insertWrapperContent(wrapper);\n wrapper.op = 'none';\n });\n\n buffer.forEach((item, i) => item.scope.$index = buffer.first + i);\n\n return {\n prepended: toBePrepended,\n removed: toBeRemoved,\n inserted: inserted,\n animated: promises\n };\n\n }\n\n function updatePaddings(rid, updates) {\n // schedule another doAdjust after animation completion\n if (updates.animated.length) {\n $q.all(updates.animated).then(() => {\n viewport.adjustPaddings();\n doAdjust(rid);\n });\n } else {\n viewport.adjustPaddings();\n }\n }\n\n function enqueueFetch(rid, updates) {\n if (viewport.shouldLoadBottom()) {\n if (!updates || buffer.effectiveHeight(updates.inserted) > 0) {\n // this means that at least one item appended in the last batch has height > 0\n if (pending.push(true) === 1) {\n adapter.loading(true);\n fetch(rid);\n }\n }\n } else if (viewport.shouldLoadTop()) {\n if ((!updates || buffer.effectiveHeight(updates.prepended) > 0) || pending[0]) {\n // this means that at least one item appended in the last batch has height > 0\n // pending[0] = true means that previous fetch was appending. We need to force at least one prepend\n // BTW there will always be at least 1 element in the pending array because bottom is fetched first\n if (pending.push(false) === 1) {\n adapter.loading(true);\n fetch(rid);\n }\n }\n }\n }\n\n function processUpdates() {\n const updates = updateDOM();\n\n // We need the item bindings to be processed before we can do adjustments\n !$scope.$$phase && !$rootScope.$$phase && $scope.$digest();\n\n updates.inserted.forEach(w => elementRoutines.showElement(w));\n updates.prepended.forEach(w => elementRoutines.showElement(w));\n return updates;\n }\n\n function doAdjust(rid) {\n if (!rid) { // dismiss pending requests\n pending = [];\n rid = ++ridActual;\n }\n\n const updates = processUpdates();\n\n if (isInvalid(rid)) {\n return;\n }\n\n updatePaddings(rid, updates);\n enqueueFetch(rid);\n\n if (!pending.length) {\n adapter.calculateProperties();\n }\n }\n\n function doAdjustAfterFetch(rid) {\n const updates = processUpdates();\n\n 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\t\t__webpack_require__.r(ns);\n \t\tObject.defineProperty(ns, 'default', { enumerable: true, value: value });\n \t\tif(mode & 2 && typeof value != 'string') for(var key in value) __webpack_require__.d(ns, key, function(key) { return value[key]; }.bind(null, key));\n \t\treturn ns;\n \t};\n\n \t// getDefaultExport function for compatibility with non-harmony modules\n \t__webpack_require__.n = function(module) {\n \t\tvar getter = module && module.__esModule ?\n \t\t\tfunction getDefault() { return module['default']; } :\n \t\t\tfunction getModuleExports() { return module; };\n \t\t__webpack_require__.d(getter, 'a', getter);\n \t\treturn getter;\n \t};\n\n \t// Object.prototype.hasOwnProperty.call\n \t__webpack_require__.o = function(object, property) { return Object.prototype.hasOwnProperty.call(object, property); };\n\n \t// __webpack_public_path__\n \t__webpack_require__.p = \"\";\n\n\n \t// Load entry module and return exports\n \treturn __webpack_require__(__webpack_require__.s = 1);\n","/*!\r\n globals: angular, window\r\n List of used element methods available in JQuery but not in JQuery Lite\r\n element.before(elem)\r\n element.height()\r\n element.outerHeight(true)\r\n element.height(value) = only for Top/Bottom padding elements\r\n element.scrollTop()\r\n element.scrollTop(value)\r\n */\r\n\r\nexport default class JQLiteExtras {\r\n\r\n registerFor(element) {\r\n let convertToPx, css, getStyle, isWindow;\r\n // angular implementation blows up if elem is the window\r\n css = angular.element.prototype.css;\r\n\r\n element.prototype.css = function (name, value) {\r\n let self = this;\r\n let elem = self[0];\r\n if (!(!elem || elem.nodeType === 3 || elem.nodeType === 8 || !elem.style)) {\r\n return css.call(self, name, value);\r\n }\r\n };\r\n\r\n // as defined in angularjs v1.0.5\r\n isWindow = (obj) => obj && obj.document && obj.location && obj.alert && obj.setInterval;\r\n\r\n function scrollTo(self, direction, value) {\r\n let elem = self[0];\r\n let [method, prop, preserve] = {\r\n top: [\r\n 'scrollTop',\r\n 'pageYOffset',\r\n 'scrollLeft'\r\n ],\r\n left: [\r\n 'scrollLeft',\r\n 'pageXOffset',\r\n 'scrollTop'\r\n ]\r\n }[direction];\r\n\r\n const isValueDefined = typeof value !== 'undefined';\r\n if (isWindow(elem)) {\r\n if (isValueDefined) {\r\n return elem.scrollTo(self[preserve].call(self), value);\r\n }\r\n return (prop in elem) ? elem[prop] : elem.document.documentElement[method];\r\n } else {\r\n if (isValueDefined) {\r\n elem[method] = value;\r\n }\r\n return elem[method];\r\n }\r\n }\r\n\r\n if (window.getComputedStyle) {\r\n getStyle = (elem) => window.getComputedStyle(elem, null);\r\n convertToPx = (elem, value) => parseFloat(value);\r\n } else {\r\n getStyle = (elem) => elem.currentStyle;\r\n convertToPx = (elem, value) => {\r\n let left, result, rs, rsLeft, style;\r\n let core_pnum = /[+-]?(?:\\d*\\.|)\\d+(?:[eE][+-]?\\d+|)/.source;\r\n let rnumnonpx = new RegExp('^(' + core_pnum + ')(?!px)[a-z%]+$', 'i');\r\n\r\n if (!rnumnonpx.test(value)) {\r\n return parseFloat(value);\r\n }\r\n\r\n // ported from JQuery\r\n style = elem.style;\r\n left = style.left;\r\n rs = elem.runtimeStyle;\r\n rsLeft = rs && rs.left;\r\n if (rs) {\r\n rs.left = style.left;\r\n }\r\n // put in the new values to get a computed style out\r\n style.left = value;\r\n result = style.pixelLeft;\r\n style.left = left;\r\n if (rsLeft) {\r\n rs.left = rsLeft;\r\n }\r\n return result;\r\n };\r\n }\r\n\r\n function getMeasurements(elem, measure) {\r\n let base, borderA, borderB, computedMarginA, computedMarginB, computedStyle, dirA, dirB, marginA, marginB, paddingA, paddingB;\r\n\r\n if (isWindow(elem)) {\r\n base = document.documentElement[{height: 'clientHeight', width: 'clientWidth'}[measure]];\r\n\r\n return {\r\n base: base,\r\n padding: 0,\r\n border: 0,\r\n margin: 0\r\n };\r\n }\r\n\r\n // Start with offset property\r\n [\r\n base,\r\n dirA,\r\n dirB\r\n ] = {\r\n width: [\r\n elem.offsetWidth,\r\n 'Left',\r\n 'Right'\r\n ],\r\n height: [\r\n elem.offsetHeight,\r\n 'Top',\r\n 'Bottom'\r\n ]\r\n }[measure];\r\n\r\n computedStyle = getStyle(elem);\r\n paddingA = convertToPx(elem, computedStyle['padding' + dirA]) || 0;\r\n paddingB = convertToPx(elem, computedStyle['padding' + dirB]) || 0;\r\n borderA = convertToPx(elem, computedStyle['border' + dirA + 'Width']) || 0;\r\n borderB = convertToPx(elem, computedStyle['border' + dirB + 'Width']) || 0;\r\n computedMarginA = computedStyle['margin' + dirA];\r\n computedMarginB = computedStyle['margin' + dirB];\r\n\r\n // I do not care for width for now, so this hack is irrelevant\r\n // if ( !supportsPercentMargin )\r\n // computedMarginA = hackPercentMargin( elem, computedStyle, computedMarginA )\r\n // computedMarginB = hackPercentMargin( elem, computedStyle, computedMarginB )\r\n marginA = convertToPx(elem, computedMarginA) || 0;\r\n marginB = convertToPx(elem, computedMarginB) || 0;\r\n\r\n return {\r\n base: base,\r\n padding: paddingA + paddingB,\r\n border: borderA + borderB,\r\n margin: marginA + marginB\r\n };\r\n }\r\n\r\n function getWidthHeight(elem, direction, measure) {\r\n let computedStyle, result;\r\n\r\n let measurements = getMeasurements(elem, direction);\r\n\r\n if (measurements.base > 0) {\r\n return {\r\n base: measurements.base - measurements.padding - measurements.border,\r\n outer: measurements.base,\r\n outerfull: measurements.base + measurements.margin\r\n }[measure];\r\n }\r\n\r\n // Fall back to computed then uncomputed css if necessary\r\n computedStyle = getStyle(elem);\r\n result = computedStyle[direction];\r\n\r\n if (result < 0 || result === null) {\r\n result = elem.style[direction] || 0;\r\n }\r\n\r\n // Normalize \"\", auto, and prepare for extra\r\n result = parseFloat(result) || 0;\r\n\r\n return {\r\n base: result - measurements.padding - measurements.border,\r\n outer: result,\r\n outerfull: result + measurements.padding + measurements.border + measurements.margin\r\n }[measure];\r\n }\r\n\r\n // define missing methods\r\n return angular.forEach({\r\n before(newElem) {\r\n var children, elem, i, j, parent, ref, self;\r\n self = this;\r\n elem = self[0];\r\n parent = self.parent();\r\n children = parent.contents();\r\n if (children[0] === elem) {\r\n return parent.prepend(newElem);\r\n } else {\r\n for (i = j = 1, ref = children.length - 1; 1 <= ref ? j <= ref : j >= ref; i = 1 <= ref ? ++j : --j) {\r\n if (children[i] === elem) {\r\n angular.element(children[i - 1]).after(newElem);\r\n return;\r\n }\r\n }\r\n throw new Error('invalid DOM structure ' + elem.outerHTML);\r\n }\r\n },\r\n height (value){\r\n var self;\r\n self = this;\r\n if (typeof value !== 'undefined') {\r\n if (angular.isNumber(value)) {\r\n value = value + 'px';\r\n }\r\n return css.call(self, 'height', value);\r\n } else {\r\n return getWidthHeight(this[0], 'height', 'base');\r\n }\r\n },\r\n outerHeight(option) {\r\n return getWidthHeight(this[0], 'height', option ? 'outerfull' : 'outer');\r\n },\r\n outerWidth(option) {\r\n return getWidthHeight(this[0], 'width', option ? 'outerfull' : 'outer');\r\n },\r\n\r\n /*\r\n The offset setter method is not implemented\r\n */\r\n offset(value) {\r\n let docElem, win;\r\n let self = this;\r\n let box = {\r\n top: 0,\r\n left: 0\r\n };\r\n let elem = self[0];\r\n let doc = elem && elem.ownerDocument;\r\n\r\n if (arguments.length) {\r\n if (value === undefined) {\r\n return self;\r\n }\r\n // TODO: implement setter\r\n throw new Error('offset setter method is not implemented');\r\n }\r\n\r\n if (!doc) {\r\n return;\r\n }\r\n\r\n docElem = doc.documentElement;\r\n\r\n // TODO: Make sure it's not a disconnected DOM node\r\n\r\n if (elem.getBoundingClientRect != null) {\r\n box = elem.getBoundingClientRect();\r\n }\r\n\r\n win = doc.defaultView || doc.parentWindow;\r\n\r\n return {\r\n top: box.top + (win.pageYOffset || docElem.scrollTop) - (docElem.clientTop || 0),\r\n left: box.left + (win.pageXOffset || docElem.scrollLeft) - (docElem.clientLeft || 0)\r\n };\r\n },\r\n scrollTop(value) {\r\n return scrollTo(this, 'top', value);\r\n },\r\n scrollLeft(value) {\r\n return scrollTo(this, 'left', value);\r\n }\r\n }, (value, key) => {\r\n if (!element.prototype[key]) {\r\n return element.prototype[key] = value;\r\n }\r\n });\r\n }\r\n\r\n}\r\n","const hideClassToken = 'ng-ui-scroll-hide';\r\n\r\nexport default class ElementRoutines {\r\n\r\n static addCSSRules() {\r\n const selector = '.' + hideClassToken;\r\n const rules = 'display: none';\r\n const sheet = document.styleSheets[0];\r\n let index;\r\n try {\r\n index = sheet.cssRules.length;\r\n } catch (err) {\r\n index = 0;\r\n }\r\n if('insertRule' in sheet) {\r\n sheet.insertRule(selector + '{' + rules + '}', index);\r\n }\r\n else if('addRule' in sheet) {\r\n sheet.addRule(selector, rules, index);\r\n }\r\n }\r\n\r\n constructor($injector, $q) {\r\n this.$animate = ($injector.has && $injector.has('$animate')) ? $injector.get('$animate') : null;\r\n this.isAngularVersionLessThen1_3 = angular.version.major === 1 && angular.version.minor < 3;\r\n this.$q = $q;\r\n }\r\n\r\n hideElement(wrapper) {\r\n wrapper.element.addClass(hideClassToken);\r\n }\r\n\r\n showElement(wrapper) {\r\n wrapper.element.removeClass(hideClassToken);\r\n }\r\n\r\n insertElement(newElement, previousElement) {\r\n previousElement.after(newElement);\r\n return [];\r\n }\r\n\r\n removeElement(wrapper) {\r\n wrapper.element.remove();\r\n wrapper.scope.$destroy();\r\n return [];\r\n }\r\n\r\n insertElementAnimated(newElement, previousElement) {\r\n if (!this.$animate) {\r\n return this.insertElement(newElement, previousElement);\r\n }\r\n\r\n if (this.isAngularVersionLessThen1_3) {\r\n const deferred = this.$q.defer();\r\n // no need for parent - previous element is never null\r\n this.$animate.enter(newElement, null, previousElement, () => deferred.resolve());\r\n\r\n return [deferred.promise];\r\n }\r\n\r\n // no need for parent - previous element is never null\r\n return [this.$animate.enter(newElement, null, previousElement)];\r\n }\r\n\r\n removeElementAnimated(wrapper) {\r\n if (!this.$animate) {\r\n return this.removeElement(wrapper);\r\n }\r\n\r\n if (this.isAngularVersionLessThen1_3) {\r\n const deferred = this.$q.defer();\r\n this.$animate.leave(wrapper.element, () => {\r\n wrapper.scope.$destroy();\r\n return deferred.resolve();\r\n });\r\n\r\n return [deferred.promise];\r\n }\r\n\r\n return [(this.$animate.leave(wrapper.element)).then(() => wrapper.scope.$destroy())];\r\n }\r\n}","export default function ScrollBuffer(elementRoutines, bufferSize, startIndex) {\r\n const buffer = Object.create(Array.prototype);\r\n\r\n angular.extend(buffer, {\r\n size: bufferSize,\r\n\r\n reset(startIndex) {\r\n buffer.remove(0, buffer.length);\r\n buffer.eof = false;\r\n buffer.bof = false;\r\n buffer.first = startIndex;\r\n buffer.next = startIndex;\r\n buffer.minIndex = startIndex;\r\n buffer.maxIndex = startIndex;\r\n buffer.minIndexUser = null;\r\n buffer.maxIndexUser = null;\r\n },\r\n\r\n append(items) {\r\n items.forEach((item) => {\r\n ++buffer.next;\r\n buffer.insert('append', item);\r\n });\r\n buffer.maxIndex = buffer.eof ? buffer.next - 1 : Math.max(buffer.next - 1, buffer.maxIndex);\r\n },\r\n\r\n prepend(items) {\r\n items.reverse().forEach((item) => {\r\n --buffer.first;\r\n buffer.insert('prepend', item);\r\n });\r\n buffer.minIndex = buffer.bof ? buffer.minIndex = buffer.first : Math.min(buffer.first, buffer.minIndex);\r\n },\r\n\r\n /**\r\n * inserts wrapped element in the buffer\r\n * the first argument is either operation keyword (see below) or a number for operation 'insert'\r\n * for insert the number is the index for the buffer element the new one have to be inserted after\r\n * operations: 'append', 'prepend', 'insert', 'remove', 'update', 'none'\r\n */\r\n insert(operation, item, isTop) {\r\n const wrapper = {\r\n item: item\r\n };\r\n\r\n if (operation % 1 === 0) {// it is an insert\r\n wrapper.op = 'insert';\r\n buffer.splice(operation, 0, wrapper);\r\n if(isTop) {\r\n buffer.first--;\r\n }\r\n else {\r\n buffer.next++;\r\n }\r\n } else {\r\n wrapper.op = operation;\r\n switch (operation) {\r\n case 'append':\r\n buffer.push(wrapper);\r\n break;\r\n case 'prepend':\r\n buffer.unshift(wrapper);\r\n break;\r\n }\r\n }\r\n },\r\n\r\n // removes elements from buffer\r\n remove(arg1, arg2) {\r\n if (angular.isNumber(arg1)) {\r\n // removes items from arg1 (including) through arg2 (excluding)\r\n for (let i = arg1; i < arg2; i++) {\r\n elementRoutines.removeElement(buffer[i]);\r\n }\r\n return buffer.splice(arg1, arg2 - arg1);\r\n }\r\n // removes single item(wrapper) from the buffer\r\n buffer.splice(buffer.indexOf(arg1), 1);\r\n if(arg1._op === 'isTop' && buffer.first === this.getAbsMinIndex()) {\r\n this.incrementMinIndex();\r\n }\r\n else {\r\n this.decrementMaxIndex();\r\n }\r\n if(arg1._op === 'isTop') {\r\n buffer.first++;\r\n }\r\n else {\r\n buffer.next--;\r\n }\r\n if(!buffer.length) {\r\n buffer.first = 1;\r\n buffer.next = 1;\r\n }\r\n\r\n return elementRoutines.removeElementAnimated(arg1);\r\n },\r\n\r\n incrementMinIndex() {\r\n if(buffer.minIndexUser !== null) {\r\n if(buffer.minIndex > buffer.minIndexUser) {\r\n buffer.minIndexUser++;\r\n return;\r\n }\r\n if(buffer.minIndex === buffer.minIndexUser) {\r\n buffer.minIndexUser++;\r\n }\r\n }\r\n buffer.minIndex++;\r\n },\r\n\r\n decrementMaxIndex() {\r\n if(buffer.maxIndexUser !== null && buffer.maxIndex <= buffer.maxIndexUser) {\r\n buffer.maxIndexUser--;\r\n }\r\n buffer.maxIndex--;\r\n },\r\n\r\n getAbsMinIndex() {\r\n if(buffer.minIndexUser !== null) {\r\n return Math.min(buffer.minIndexUser, buffer.minIndex);\r\n }\r\n return buffer.minIndex;\r\n },\r\n\r\n getAbsMaxIndex() {\r\n if(buffer.maxIndexUser !== null) {\r\n return Math.max(buffer.maxIndexUser, buffer.maxIndex);\r\n }\r\n return buffer.maxIndex;\r\n },\r\n\r\n effectiveHeight(elements) {\r\n if (!elements.length) {\r\n return 0;\r\n }\r\n let top = Number.MAX_VALUE;\r\n let bottom = Number.NEGATIVE_INFINITY;\r\n elements.forEach((wrapper) => {\r\n if (wrapper.element[0].offsetParent) {\r\n // element style is not display:none\r\n top = Math.min(top, wrapper.element.offset().top);\r\n bottom = Math.max(bottom, wrapper.element.offset().top + wrapper.element.outerHeight(true));\r\n }\r\n });\r\n return Math.max(0, bottom - top);\r\n }\r\n\r\n });\r\n\r\n buffer.reset(startIndex);\r\n\r\n return buffer;\r\n}\r\n","// Can't just extend the Array, due to Babel does not support built-in classes extending\r\n// This solution was taken from https://stackoverflow.com/questions/46897414/es6-class-extends-array-workaround-for-es5-babel-transpile\r\nclass CacheProto {\r\n add(item) {\r\n for (let i = this.length - 1; i >= 0; i--) {\r\n if (this[i].index === item.scope.$index) {\r\n this[i].height = item.element.outerHeight();\r\n return;\r\n }\r\n }\r\n this.push({\r\n index: item.scope.$index,\r\n height: item.element.outerHeight()\r\n });\r\n this.sort((a, b) => ((a.index < b.index) ? -1 : ((a.index > b.index) ? 1 : 0)));\r\n }\r\n\r\n remove(argument, _isTop) {\r\n const index = argument % 1 === 0 ? argument : argument.scope.$index;\r\n const isTop = argument % 1 === 0 ? _isTop : argument._op === 'isTop';\r\n for (let i = this.length - 1; i >= 0; i--) {\r\n if (this[i].index === index) {\r\n this.splice(i, 1);\r\n break;\r\n }\r\n }\r\n if(!isTop) {\r\n for (let i = this.length - 1; i >= 0; i--) {\r\n if (this[i].index > index) {\r\n this[i].index--;\r\n }\r\n }\r\n }\r\n }\r\n\r\n clear() {\r\n this.length = 0;\r\n }\r\n}\r\n\r\nfunction Cache() {\r\n const instance = [];\r\n instance.push.apply(instance, arguments);\r\n Object.setPrototypeOf(instance, Cache.prototype);\r\n return instance;\r\n}\r\nCache.prototype = Object.create(Array.prototype);\r\nObject.getOwnPropertyNames(CacheProto.prototype).forEach(methodName =>\r\n Cache.prototype[methodName] = CacheProto.prototype[methodName]\r\n);\r\n\r\nfunction generateElement(template) {\r\n if(template.nodeType !== Node.ELEMENT_NODE) {\r\n throw new Error('ui-scroll directive requires an Element node for templating the view');\r\n }\r\n let element;\r\n switch (template.tagName.toLowerCase()) {\r\n case 'dl':\r\n throw new Error(`ui-scroll directive does not support <${template.tagName}> as a repeating tag: ${template.outerHTML}`);\r\n case 'tr':\r\n let table = angular.element('
    ');\r\n element = table.find('tr');\r\n break;\r\n case 'li':\r\n element = angular.element('
  • ');\r\n break;\r\n default:\r\n element = angular.element('
    ');\r\n }\r\n return element;\r\n}\r\n\r\nclass Padding {\r\n constructor(template) {\r\n this.element = generateElement(template);\r\n this.cache = new Cache();\r\n }\r\n\r\n height() {\r\n return this.element.height.apply(this.element, arguments);\r\n }\r\n}\r\n\r\nexport default Padding;","import Padding from './padding';\r\n\r\nexport default function Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding) {\r\n let topPadding = null;\r\n let bottomPadding = null;\r\n const viewport = viewportController && viewportController.viewport ? viewportController.viewport : angular.element(window);\r\n const container = viewportController && viewportController.container ? viewportController.container : undefined;\r\n const scope = viewportController && viewportController.scope ? viewportController.scope : $rootScope;\r\n\r\n viewport.css({\r\n 'overflow-anchor': 'none',\r\n 'overflow-y': 'auto',\r\n 'display': 'block'\r\n });\r\n\r\n function bufferPadding() {\r\n return viewport.outerHeight() * padding; // some extra space to initiate preload\r\n }\r\n\r\n angular.extend(viewport, {\r\n getScope() {\r\n return scope;\r\n },\r\n\r\n createPaddingElements(template) {\r\n topPadding = new Padding(template);\r\n bottomPadding = new Padding(template);\r\n element.before(topPadding.element);\r\n element.after(bottomPadding.element);\r\n topPadding.height(0);\r\n bottomPadding.height(0);\r\n },\r\n\r\n applyContainerStyle() {\r\n if (!container) {\r\n return true;\r\n }\r\n if(container !== viewport) {\r\n viewport.css('height', window.getComputedStyle(container[0]).height);\r\n }\r\n return viewport.height() > 0;\r\n },\r\n\r\n bottomDataPos() {\r\n let scrollHeight = viewport[0].scrollHeight;\r\n scrollHeight = scrollHeight != null ? scrollHeight : viewport[0].document.documentElement.scrollHeight;\r\n return scrollHeight - bottomPadding.height();\r\n },\r\n\r\n topDataPos() {\r\n return topPadding.height();\r\n },\r\n\r\n bottomVisiblePos() {\r\n return viewport.scrollTop() + viewport.outerHeight();\r\n },\r\n\r\n topVisiblePos() {\r\n return viewport.scrollTop();\r\n },\r\n\r\n insertElement(e, sibling) {\r\n return elementRoutines.insertElement(e, sibling || topPadding.element);\r\n },\r\n\r\n insertElementAnimated(e, sibling) {\r\n return elementRoutines.insertElementAnimated(e, sibling || topPadding.element);\r\n },\r\n\r\n shouldLoadBottom() {\r\n return !buffer.eof && viewport.bottomDataPos() < viewport.bottomVisiblePos() + bufferPadding();\r\n },\r\n\r\n clipBottom() {\r\n // clip the invisible items off the bottom\r\n let overage = 0;\r\n let overageHeight = 0;\r\n let itemHeight = 0;\r\n let emptySpaceHeight = viewport.bottomDataPos() - viewport.bottomVisiblePos() - bufferPadding();\r\n\r\n for (let i = buffer.length - 1; i >= 0; i--) {\r\n itemHeight = buffer[i].element.outerHeight(true);\r\n if (overageHeight + itemHeight > emptySpaceHeight) {\r\n break;\r\n }\r\n bottomPadding.cache.add(buffer[i]);\r\n overageHeight += itemHeight;\r\n overage++;\r\n }\r\n\r\n if (overage > 0) {\r\n buffer.eof = false;\r\n buffer.remove(buffer.length - overage, buffer.length);\r\n buffer.next -= overage;\r\n viewport.adjustPaddings();\r\n }\r\n },\r\n\r\n shouldLoadTop() {\r\n return !buffer.bof && (viewport.topDataPos() > viewport.topVisiblePos() - bufferPadding());\r\n },\r\n\r\n clipTop() {\r\n // clip the invisible items off the top\r\n let overage = 0;\r\n let overageHeight = 0;\r\n let itemHeight = 0;\r\n let emptySpaceHeight = viewport.topVisiblePos() - viewport.topDataPos() - bufferPadding();\r\n\r\n for (let i = 0; i < buffer.length; i++) {\r\n itemHeight = buffer[i].element.outerHeight(true);\r\n if (overageHeight + itemHeight > emptySpaceHeight) {\r\n break;\r\n }\r\n topPadding.cache.add(buffer[i]);\r\n overageHeight += itemHeight;\r\n overage++;\r\n }\r\n\r\n if (overage > 0) {\r\n // we need to adjust top padding element before items are removed from top\r\n // to avoid strange behaviour of scroll bar during remove top items when we are at the very bottom\r\n topPadding.height(topPadding.height() + overageHeight);\r\n buffer.bof = false;\r\n buffer.remove(0, overage);\r\n buffer.first += overage;\r\n }\r\n },\r\n\r\n adjustPaddings() {\r\n if (!buffer.length) {\r\n return;\r\n }\r\n\r\n // precise heights calculation based on items that are in buffer or that were in buffer once\r\n const visibleItemsHeight = buffer.reduce((summ, item) => summ + item.element.outerHeight(true), 0);\r\n\r\n let topPaddingHeight = 0, topCount = 0;\r\n topPadding.cache.forEach(item => {\r\n if(item.index < buffer.first) {\r\n topPaddingHeight += item.height;\r\n topCount++;\r\n }\r\n });\r\n\r\n let bottomPaddingHeight = 0, bottomCount = 0;\r\n bottomPadding.cache.forEach(item => {\r\n if(item.index >= buffer.next) {\r\n bottomPaddingHeight += item.height;\r\n bottomCount++;\r\n }\r\n });\r\n\r\n const totalHeight = visibleItemsHeight + topPaddingHeight + bottomPaddingHeight;\r\n const averageItemHeight = totalHeight / (topCount + bottomCount + buffer.length);\r\n\r\n // average heights calculation, items that have never been reached\r\n let adjustTopPadding = buffer.minIndexUser !== null && buffer.minIndex > buffer.minIndexUser;\r\n let adjustBottomPadding = buffer.maxIndexUser !== null && buffer.maxIndex < buffer.maxIndexUser;\r\n let topPaddingHeightAdd = adjustTopPadding ? (buffer.minIndex - buffer.minIndexUser) * averageItemHeight : 0;\r\n let bottomPaddingHeightAdd = adjustBottomPadding ? (buffer.maxIndexUser - buffer.maxIndex) * averageItemHeight : 0;\r\n\r\n // paddings combine adjustment\r\n topPadding.height(topPaddingHeight + topPaddingHeightAdd);\r\n bottomPadding.height(bottomPaddingHeight + bottomPaddingHeightAdd);\r\n },\r\n\r\n onAfterMinIndexSet(topPaddingHeightOld) {\r\n // additional scrollTop adjustment in case of datasource.minIndex external set\r\n if (buffer.minIndexUser !== null && buffer.minIndex > buffer.minIndexUser) {\r\n let diff = topPadding.height() - topPaddingHeightOld;\r\n viewport.scrollTop(viewport.scrollTop() + diff);\r\n while((diff -= viewport.scrollTop()) > 0) {\r\n bottomPadding.height(bottomPadding.height() + diff);\r\n viewport.scrollTop(viewport.scrollTop() + diff);\r\n }\r\n }\r\n },\r\n\r\n onAfterPrepend(updates) {\r\n if (!updates.prepended.length)\r\n return;\r\n const height = buffer.effectiveHeight(updates.prepended);\r\n const paddingHeight = topPadding.height() - height;\r\n if (paddingHeight >= 0) {\r\n topPadding.height(paddingHeight);\r\n }\r\n else {\r\n topPadding.height(0);\r\n viewport.scrollTop(viewport.scrollTop() - paddingHeight);\r\n }\r\n },\r\n\r\n resetTopPadding() {\r\n topPadding.height(0);\r\n topPadding.cache.clear();\r\n },\r\n\r\n resetBottomPadding() {\r\n bottomPadding.height(0);\r\n bottomPadding.cache.clear();\r\n },\r\n\r\n removeCacheItem(item, isTop) {\r\n topPadding.cache.remove(item, isTop);\r\n bottomPadding.cache.remove(item, isTop);\r\n },\r\n\r\n removeItem(item) {\r\n this.removeCacheItem(item);\r\n return buffer.remove(item);\r\n }\r\n });\r\n\r\n return viewport;\r\n}\r\n","class Adapter {\r\n\r\n constructor($scope, $parse, $attr, viewport, buffer, doAdjust, reload) {\r\n this.$parse = $parse;\r\n this.$attr = $attr;\r\n this.viewport = viewport;\r\n this.buffer = buffer;\r\n\r\n this.doAdjust = doAdjust;\r\n this.reload = reload;\r\n\r\n this.isLoading = false;\r\n this.disabled = false;\r\n\r\n const viewportScope = viewport.getScope();\r\n this.startScope = viewportScope.$parent ? viewportScope : $scope;\r\n\r\n this.publicContext = {};\r\n this.assignAdapter($attr.adapter);\r\n this.generatePublicContext();\r\n }\r\n\r\n assignAdapter(adapterAttr) {\r\n if (!adapterAttr || !(adapterAttr = adapterAttr.replace(/^\\s+|\\s+$/gm, ''))) {\r\n return;\r\n }\r\n let adapterOnScope;\r\n\r\n try {\r\n this.$parse(adapterAttr).assign(this.startScope, {});\r\n adapterOnScope = this.$parse(adapterAttr)(this.startScope);\r\n }\r\n catch (error) {\r\n error.message = `Angular ui-scroll Adapter assignment exception.\\n` +\r\n `Can't parse \"${adapterAttr}\" expression.\\n` +\r\n error.message;\r\n throw error;\r\n }\r\n\r\n angular.extend(adapterOnScope, this.publicContext);\r\n this.publicContext = adapterOnScope;\r\n }\r\n\r\n generatePublicContext() {\r\n // these methods will be accessible out of ui-scroll via user defined adapter\r\n const publicMethods = ['reload', 'applyUpdates', 'append', 'prepend', 'isBOF', 'isEOF', 'isEmpty'];\r\n for (let i = publicMethods.length - 1; i >= 0; i--) {\r\n this.publicContext[publicMethods[i]] = this[publicMethods[i]].bind(this);\r\n }\r\n\r\n // these read-only props will be accessible out of ui-scroll via user defined adapter\r\n const publicProps = ['isLoading', 'topVisible', 'topVisibleElement', 'topVisibleScope', 'bottomVisible', 'bottomVisibleElement', 'bottomVisibleScope'];\r\n for (let i = publicProps.length - 1; i >= 0; i--) {\r\n let property, attr = this.$attr[publicProps[i]];\r\n Object.defineProperty(this, publicProps[i], {\r\n get: () => property,\r\n set: (value) => {\r\n property = value;\r\n this.publicContext[publicProps[i]] = value;\r\n if (attr) {\r\n this.$parse(attr).assign(this.startScope, value);\r\n }\r\n }\r\n });\r\n }\r\n\r\n // non-read-only public property\r\n Object.defineProperty(this.publicContext, 'disabled', {\r\n get: () => this.disabled,\r\n set: (value) => (!(this.disabled = value)) ? this.doAdjust() : null\r\n });\r\n }\r\n\r\n loading(value) {\r\n this.isLoading = value;\r\n }\r\n\r\n isBOF() {\r\n return this.buffer.bof;\r\n }\r\n\r\n isEOF() {\r\n return this.buffer.eof;\r\n }\r\n\r\n isEmpty() {\r\n return !this.buffer.length;\r\n }\r\n\r\n append(newItems) {\r\n this.buffer.append(newItems);\r\n this.doAdjust();\r\n this.viewport.clipTop();\r\n this.viewport.clipBottom();\r\n }\r\n\r\n prepend(newItems) {\r\n this.buffer.prepend(newItems);\r\n this.doAdjust();\r\n this.viewport.clipTop();\r\n this.viewport.clipBottom();\r\n }\r\n\r\n applyUpdates(arg1, arg2) {\r\n if (typeof arg1 === 'function') {\r\n this.applyUpdatesFunc(arg1);\r\n } else {\r\n this.applyUpdatesIndex(arg1, arg2);\r\n }\r\n this.doAdjust();\r\n }\r\n\r\n applyUpdatesFunc(cb) {\r\n this.buffer.slice(0).forEach((wrapper) => {\r\n // we need to do it on the buffer clone, because buffer content\r\n // may change as we iterate through\r\n this.applyUpdate(wrapper, cb(wrapper.item, wrapper.scope, wrapper.element));\r\n });\r\n }\r\n\r\n applyUpdatesIndex(index, newItems) {\r\n if (index % 1 !== 0) {\r\n throw new Error('applyUpdates - ' + index + ' is not a valid index (should be an integer)');\r\n }\r\n const _index = index - this.buffer.first;\r\n\r\n // apply updates only within buffer\r\n if (_index >= 0 && _index < this.buffer.length) {\r\n this.applyUpdate(this.buffer[_index], newItems);\r\n }\r\n // out-of-buffer case: deletion may affect Paddings\r\n else if(index >= this.buffer.getAbsMinIndex() && index <= this.buffer.getAbsMaxIndex()) {\r\n if(angular.isArray(newItems) && !newItems.length) {\r\n this.viewport.removeCacheItem(index, index === this.buffer.minIndex);\r\n if(index === this.buffer.getAbsMinIndex()) {\r\n this.buffer.incrementMinIndex();\r\n }\r\n else {\r\n this.buffer.decrementMaxIndex();\r\n }\r\n }\r\n }\r\n }\r\n\r\n applyUpdate(wrapper, newItems) {\r\n if (!angular.isArray(newItems)) {\r\n return;\r\n }\r\n let position = this.buffer.indexOf(wrapper);\r\n if (!newItems.reverse().some(newItem => newItem === wrapper.item)) {\r\n wrapper.op = 'remove';\r\n if(position === 0 && !newItems.length) {\r\n wrapper._op = 'isTop'; // to catch \"first\" edge case on remove\r\n }\r\n }\r\n newItems.forEach((newItem) => {\r\n if (newItem === wrapper.item) {\r\n position--;\r\n } else {\r\n // 3 parameter (isTop) is to catch \"first\" edge case on insert\r\n this.buffer.insert(position + 1, newItem, position === -1);\r\n }\r\n });\r\n }\r\n\r\n calculateProperties() {\r\n let rowTop = null, topHeight = 0;\r\n let topDone = false, bottomDone = false;\r\n const length = this.buffer.length;\r\n\r\n for (let i = 0; i < length; i++) {\r\n const item = this.buffer[i];\r\n const itemTop = item.element.offset().top;\r\n\r\n if (rowTop !== itemTop) { // a new row condition\r\n const itemHeight = item.element.outerHeight(true);\r\n const top = this.viewport.topDataPos() + topHeight + itemHeight;\r\n\r\n if (!topDone && top > this.viewport.topVisiblePos()) {\r\n topDone = true;\r\n this['topVisible'] = item.item;\r\n this['topVisibleElement'] = item.element;\r\n this['topVisibleScope'] = item.scope;\r\n }\r\n if (!bottomDone && (top >= this.viewport.bottomVisiblePos() || (i === length - 1 && this.isEOF()))) {\r\n bottomDone = true;\r\n this['bottomVisible'] = item.item;\r\n this['bottomVisibleElement'] = item.element;\r\n this['bottomVisibleScope'] = item.scope;\r\n }\r\n topHeight += itemHeight;\r\n }\r\n rowTop = itemTop;\r\n\r\n if (topDone && bottomDone) {\r\n break;\r\n }\r\n }\r\n }\r\n\r\n}\r\n\r\nexport default Adapter;\r\n","import JQLiteExtras from './modules/jqLiteExtras';\nimport ElementRoutines from './modules/elementRoutines.js';\nimport ScrollBuffer from './modules/buffer.js';\nimport Viewport from './modules/viewport.js';\nimport Adapter from './modules/adapter.js';\n\nangular.module('ui.scroll', [])\n\n .constant('JQLiteExtras', JQLiteExtras)\n .run(['JQLiteExtras', (JQLiteExtras) => {\n const elt = angular.element;\n !(window.jQuery && elt.fn && elt.fn.jquery) ? (new JQLiteExtras()).registerFor(elt) : null;\n ElementRoutines.addCSSRules();\n }])\n\n .directive('uiScrollViewport', function () {\n return {\n restrict: 'A',\n controller: [\n '$scope',\n '$element',\n function (scope, element) {\n this.container = element;\n this.viewport = element;\n this.scope = scope;\n\n angular.forEach(element.children(), child => {\n if (child.tagName.toLowerCase() === 'tbody') {\n this.viewport = angular.element(child);\n }\n });\n\n return this;\n }\n ]\n };\n })\n\n .directive('uiScroll', [\n '$log',\n '$injector',\n '$rootScope',\n '$timeout',\n '$interval',\n '$q',\n '$parse',\n function (console, $injector, $rootScope, $timeout, $interval, $q, $parse) {\n\n return {\n require: ['?^uiScrollViewport'],\n restrict: 'A',\n transclude: 'element',\n priority: 1000,\n terminal: true,\n link: link\n };\n\n function link($scope, element, $attr, controllers, linker) {\n const match = $attr.uiScroll.match(/^\\s*(\\w+)\\s+in\\s+([(\\w|\\$)\\.]+)\\s*$/);\n if (!match) {\n throw new Error('Expected uiScroll in form of \\'_item_ in _datasource_\\' but got \\'' + $attr.uiScroll + '\\'');\n }\n\n function parseNumber(value, defaultValue, isFloat) {\n if (!isFloat) {\n value = value === null ? defaultValue : Math.floor(value);\n }\n return isNaN(value) ? defaultValue : value;\n }\n\n function parseNumericAttr(value, defaultValue, isFloat) {\n const result = $parse(value)($scope);\n return parseNumber(result, defaultValue, isFloat);\n }\n\n const BUFFER_MIN = 3;\n const BUFFER_DEFAULT = 10;\n const PADDING_MIN = 0.3;\n const PADDING_DEFAULT = 0.5;\n const START_INDEX_DEFAULT = 1;\n const MAX_VIEWPORT_DELAY = 500;\n const VIEWPORT_POLLING_INTERVAL = 50;\n\n let datasource = null;\n const itemName = match[1];\n const datasourceName = match[2];\n const viewportController = controllers[0];\n const bufferSize = Math.max(BUFFER_MIN, parseNumericAttr($attr.bufferSize, BUFFER_DEFAULT));\n const padding = Math.max(PADDING_MIN, parseNumericAttr($attr.padding, PADDING_DEFAULT, true));\n let startIndex = parseNumericAttr($attr.startIndex, START_INDEX_DEFAULT);\n let ridActual = 0; // current data revision id\n let pending = [];\n\n const elementRoutines = new ElementRoutines($injector, $q);\n const buffer = new ScrollBuffer(elementRoutines, bufferSize, startIndex);\n const viewport = new Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding);\n const adapter = new Adapter($scope, $parse, $attr, viewport, buffer, doAdjust, reload);\n\n if (viewportController) {\n viewportController.adapter = adapter;\n }\n\n const isDatasourceValid = () =>\n Object.prototype.toString.call(datasource) === '[object Object]' && typeof datasource.get === 'function';\n\n datasource = $parse(datasourceName)($scope); // try to get datasource on scope\n if (!isDatasourceValid()) {\n datasource = $injector.get(datasourceName); // try to inject datasource as service\n if (!isDatasourceValid()) {\n throw new Error(datasourceName + ' is not a valid datasource');\n }\n }\n\n let onRenderHandlers = [];\n function onRenderHandlersRunner() {\n onRenderHandlers.forEach(handler => handler.run());\n onRenderHandlers = [];\n }\n function persistDatasourceIndex(datasource, propName) {\n let getter;\n // need to postpone min/maxIndexUser processing if the view is empty\n if(angular.isNumber(datasource[propName])) {\n getter = datasource[propName];\n if(angular.isNumber(getter)) {\n onRenderHandlers = onRenderHandlers.filter(handler => handler.id !== propName);\n onRenderHandlers.push({\n id: propName,\n run: () => datasource[propName] = getter\n });\n }\n }\n }\n\n function defineDatasourceIndex(datasource, propName, propUserName) {\n const descriptor = Object.getOwnPropertyDescriptor(datasource, propName);\n if (descriptor && (descriptor.set || descriptor.get)) {\n return;\n }\n let getter;\n persistDatasourceIndex(datasource, propName);\n Object.defineProperty(datasource, propName, {\n set: (value) => {\n getter = value;\n if(pending.length && !buffer.length) {\n persistDatasourceIndex(datasource, propName);\n return;\n }\n buffer[propUserName] = value;\n const topPaddingHeightOld = viewport.topDataPos();\n viewport.adjustPaddings();\n if (propName === 'minIndex') {\n viewport.onAfterMinIndexSet(topPaddingHeightOld);\n }\n },\n get: () => getter\n });\n }\n\n defineDatasourceIndex(datasource, 'minIndex', 'minIndexUser');\n defineDatasourceIndex(datasource, 'maxIndex', 'maxIndexUser');\n\n const fetchNext = (datasource.get.length !== 2) ?\n (success) => datasource.get(buffer.next, bufferSize, success) :\n (success) => {\n datasource.get({\n index: buffer.next,\n append: buffer.length ? buffer[buffer.length - 1].item : void 0,\n count: bufferSize\n }, success);\n };\n\n const fetchPrevious = (datasource.get.length !== 2) ?\n (success) => datasource.get(buffer.first - bufferSize, bufferSize, success) :\n (success) => {\n datasource.get({\n index: buffer.first - bufferSize,\n prepend: buffer.length ? buffer[0].item : void 0,\n count: bufferSize\n }, success);\n };\n\n const initialize = () => {\n let tryCount = 0;\n if(!viewport.applyContainerStyle()) {\n const timer = $interval(() => {\n tryCount++;\n if(viewport.applyContainerStyle()) {\n $interval.cancel(timer);\n doAdjust();\n }\n if(tryCount * VIEWPORT_POLLING_INTERVAL >= MAX_VIEWPORT_DELAY) {\n $interval.cancel(timer);\n throw Error(`ui-scroll directive requires a viewport with non-zero height in ${MAX_VIEWPORT_DELAY}ms`);\n }\n }, VIEWPORT_POLLING_INTERVAL);\n }\n else {\n doAdjust();\n }\n };\n\n /**\n * Build padding elements\n *\n * Calling linker is the only way I found to get access to the tag name of the template\n * to prevent the directive scope from pollution a new scope is created and destroyed\n * right after the builder creation is completed\n */\n linker((clone, scope) => {\n viewport.createPaddingElements(clone[0]);\n // we do not include the clone in the DOM. It means that the nested directives will not\n // be able to reach the parent directives, but in this case it is intentional because we\n // created the clone to access the template tag name\n scope.$destroy();\n clone.remove();\n });\n\n $scope.$on('$destroy', () => {\n unbindEvents();\n viewport.unbind('mousewheel', wheelHandler);\n });\n\n viewport.bind('mousewheel', wheelHandler);\n\n initialize();\n\n /* Private function definitions */\n\n function isInvalid(rid) {\n return (rid && rid !== ridActual) || $scope.$$destroyed;\n }\n\n function bindEvents() {\n viewport.bind('resize', resizeAndScrollHandler);\n viewport.bind('scroll', resizeAndScrollHandler);\n }\n\n function unbindEvents() {\n viewport.unbind('resize', resizeAndScrollHandler);\n viewport.unbind('scroll', resizeAndScrollHandler);\n }\n\n function reload() {\n viewport.resetTopPadding();\n viewport.resetBottomPadding();\n if (arguments.length) {\n startIndex = parseNumber(arguments[0], START_INDEX_DEFAULT, false);\n }\n buffer.reset(startIndex);\n persistDatasourceIndex(datasource, 'minIndex');\n persistDatasourceIndex(datasource, 'maxIndex');\n doAdjust();\n }\n\n function isElementVisible(wrapper) {\n return wrapper.element.height() && wrapper.element[0].offsetParent;\n }\n\n function visibilityWatcher(wrapper) {\n if (isElementVisible(wrapper)) {\n buffer.forEach((item) => {\n if (typeof item.unregisterVisibilityWatcher === 'function') {\n item.unregisterVisibilityWatcher();\n delete item.unregisterVisibilityWatcher;\n }\n });\n if (!pending.length) {\n $timeout(() => doAdjust());\n }\n }\n }\n\n function insertWrapperContent(wrapper, insertAfter) {\n createElement(wrapper, insertAfter, viewport.insertElement);\n if (!isElementVisible(wrapper)) {\n wrapper.unregisterVisibilityWatcher = wrapper.scope.$watch(() => visibilityWatcher(wrapper));\n }\n elementRoutines.hideElement(wrapper); // hide inserted elements before data binding\n }\n\n function createElement(wrapper, insertAfter, insertElement) {\n let promises = null;\n const sibling = (insertAfter > 0) ? buffer[insertAfter - 1].element : undefined;\n linker((clone, scope) => {\n promises = insertElement(clone, sibling);\n wrapper.element = clone;\n wrapper.scope = scope;\n scope[itemName] = wrapper.item;\n });\n // ui-scroll-grid apply\n if (adapter.transform) {\n const tdInitializer = wrapper.scope.uiScrollTdInitializer;\n if (tdInitializer && tdInitializer.linking) {\n adapter.transform(wrapper.scope, wrapper.element);\n } else {\n wrapper.scope.uiScrollTdInitializer = {\n onLink: () => adapter.transform(wrapper.scope, wrapper.element),\n scope: wrapper.scope\n };\n }\n }\n return promises;\n }\n\n function updateDOM() {\n let promises = [];\n const toBePrepended = [];\n const toBeRemoved = [];\n const inserted = [];\n\n buffer.forEach((wrapper, i) => {\n switch (wrapper.op) {\n case 'prepend':\n toBePrepended.unshift(wrapper);\n break;\n case 'append':\n insertWrapperContent(wrapper, i);\n wrapper.op = 'none';\n inserted.push(wrapper);\n break;\n case 'insert':\n promises = promises.concat(createElement(wrapper, i, viewport.insertElementAnimated));\n wrapper.op = 'none';\n inserted.push(wrapper);\n break;\n case 'remove':\n toBeRemoved.push(wrapper);\n }\n });\n\n toBeRemoved.forEach((wrapper) => promises = promises.concat(viewport.removeItem(wrapper)));\n\n if (toBePrepended.length)\n toBePrepended.forEach((wrapper) => {\n insertWrapperContent(wrapper);\n wrapper.op = 'none';\n });\n\n buffer.forEach((item, i) => item.scope.$index = buffer.first + i);\n\n return {\n prepended: toBePrepended,\n removed: toBeRemoved,\n inserted: inserted,\n animated: promises\n };\n\n }\n\n function updatePaddings(rid, updates) {\n // schedule another doAdjust after animation completion\n if (updates.animated.length) {\n $q.all(updates.animated).then(() => {\n viewport.adjustPaddings();\n doAdjust(rid);\n });\n } else {\n viewport.adjustPaddings();\n }\n }\n\n function enqueueFetch(rid, updates) {\n if (viewport.shouldLoadBottom()) {\n if (!updates || buffer.effectiveHeight(updates.inserted) > 0) {\n // this means that at least one item appended in the last batch has height > 0\n if (pending.push(true) === 1) {\n adapter.loading(true);\n fetch(rid);\n }\n }\n } else if (viewport.shouldLoadTop()) {\n if ((!updates || buffer.effectiveHeight(updates.prepended) > 0) || pending[0]) {\n // this means that at least one item appended in the last batch has height > 0\n // pending[0] = true means that previous fetch was appending. We need to force at least one prepend\n // BTW there will always be at least 1 element in the pending array because bottom is fetched first\n if (pending.push(false) === 1) {\n adapter.loading(true);\n fetch(rid);\n }\n }\n }\n }\n\n function processUpdates() {\n const updates = updateDOM();\n\n // We need the item bindings to be processed before we can do adjustments\n !$scope.$$phase && !$rootScope.$$phase && $scope.$digest();\n\n updates.inserted.forEach(w => elementRoutines.showElement(w));\n updates.prepended.forEach(w => elementRoutines.showElement(w));\n return updates;\n }\n\n function doAdjust(rid) {\n if (!rid) { // dismiss pending requests\n pending = [];\n rid = ++ridActual;\n }\n\n const updates = processUpdates();\n\n if (isInvalid(rid)) {\n return;\n }\n\n updatePaddings(rid, updates);\n enqueueFetch(rid);\n\n if (!pending.length) {\n adapter.calculateProperties();\n }\n }\n\n function doAdjustAfterFetch(rid) {\n const updates = processUpdates();\n\n viewport.onAfterPrepend(updates);\n\n if (isInvalid(rid)) {\n return;\n }\n\n updatePaddings(rid, updates);\n onRenderHandlersRunner();\n enqueueFetch(rid, updates);\n pending.shift();\n\n if (pending.length)\n fetch(rid);\n else {\n adapter.loading(false);\n bindEvents();\n adapter.calculateProperties();\n }\n }\n\n function fetch(rid) {\n if (pending[0]) {// scrolling down\n if (buffer.length && !viewport.shouldLoadBottom()) {\n doAdjustAfterFetch(rid);\n } else {\n fetchNext((result) => {\n if (isInvalid(rid)) {\n return;\n }\n\n if (result.length < bufferSize) {\n buffer.eof = true;\n }\n\n if (result.length > 0) {\n viewport.clipTop();\n buffer.append(result);\n }\n\n doAdjustAfterFetch(rid);\n });\n }\n } else { // scrolling up\n if (buffer.length && !viewport.shouldLoadTop()) {\n doAdjustAfterFetch(rid);\n } else {\n fetchPrevious((result) => {\n if (isInvalid(rid)) {\n return;\n }\n\n if (result.length < bufferSize) {\n buffer.bof = true;\n // log 'bof is reached'\n }\n\n if (result.length > 0) {\n if (buffer.length) {\n viewport.clipBottom();\n }\n buffer.prepend(result);\n }\n\n doAdjustAfterFetch(rid);\n });\n }\n }\n }\n\n function resizeAndScrollHandler() {\n if (!$rootScope.$$phase && !adapter.isLoading && !adapter.disabled) {\n\n enqueueFetch(ridActual);\n\n if (pending.length) {\n unbindEvents();\n } else {\n adapter.calculateProperties();\n !$scope.$$phase && $scope.$digest();\n }\n }\n }\n\n function wheelHandler(event) {\n if (!adapter.disabled) {\n const scrollTop = viewport[0].scrollTop;\n const yMax = viewport[0].scrollHeight - viewport[0].clientHeight;\n\n if ((scrollTop === 0 && !buffer.bof) || (scrollTop === yMax && !buffer.eof)) {\n event.preventDefault();\n }\n }\n }\n }\n\n }\n ]);\n"],"sourceRoot":""} \ No newline at end of file diff --git a/dist/ui-scroll.min.js b/dist/ui-scroll.min.js index b6b5d46e..5f5bb746 100644 --- a/dist/ui-scroll.min.js +++ b/dist/ui-scroll.min.js @@ -1,2 +1,2 @@ -!function(n){var r={};function i(e){if(r[e])return r[e].exports;var t=r[e]={i:e,l:!1,exports:{}};return n[e].call(t.exports,t,t.exports,i),t.l=!0,t.exports}i.m=n,i.c=r,i.d=function(e,t,n){i.o(e,t)||Object.defineProperty(e,t,{enumerable:!0,get:n})},i.r=function(e){"undefined"!=typeof Symbol&&Symbol.toStringTag&&Object.defineProperty(e,Symbol.toStringTag,{value:"Module"}),Object.defineProperty(e,"__esModule",{value:!0})},i.t=function(t,e){if(1&e&&(t=i(t)),8&e)return t;if(4&e&&"object"==typeof t&&t&&t.__esModule)return t;var n=Object.create(null);if(i.r(n),Object.defineProperty(n,"default",{enumerable:!0,value:t}),2&e&&"string"!=typeof t)for(var r in t)i.d(n,r,function(e){return t[e]}.bind(null,r));return n},i.n=function(e){var t=e&&e.__esModule?function(){return e.default}:function(){return e};return i.d(t,"a",t),t},i.o=function(e,t){return Object.prototype.hasOwnProperty.call(e,t)},i.p="",i(i.s=1)}([,function(e,t,n){"use strict";function g(e,t){return function(e){if(Array.isArray(e))return e}(e)||function(e,t){var n=[],r=!0,i=!1,o=void 0;try{for(var a,s=e[Symbol.iterator]();!(r=(a=s.next()).done)&&(n.push(a.value),!t||n.length!==t);r=!0);}catch(e){i=!0,o=e}finally{try{r||null==s.return||s.return()}finally{if(i)throw o}}return n}(e,t)||function(){throw new TypeError("Invalid attempt to destructure non-iterable instance")}()}function i(e,t){for(var n=0;ni.minIndexUser)return void i.minIndexUser++;i.minIndex===i.minIndexUser&&i.minIndexUser++}i.minIndex++},decrementMaxIndex:function(){null!==i.maxIndexUser&&i.maxIndex<=i.maxIndexUser&&i.maxIndexUser--,i.maxIndex--},getAbsMinIndex:function(){return null!==i.minIndexUser?Math.min(i.minIndexUser,i.minIndex):i.minIndex},getAbsMaxIndex:function(){return null!==i.maxIndexUser?Math.max(i.maxIndexUser,i.maxIndex):i.maxIndex},effectiveHeight:function(e){if(!e.length)return 0;var t=Number.MAX_VALUE,n=Number.NEGATIVE_INFINITY;return e.forEach(function(e){e.element[0].offsetParent&&(t=Math.min(t,e.element.offset().top),n=Math.max(n,e.element.offset().top+e.element.outerHeight(!0)))}),Math.max(0,n-t)}}),i.reset(t),i}function u(e,t){if(!(e instanceof t))throw new TypeError("Cannot call a class as a function")}function l(e,t){for(var n=0;nt.index?1:0})}},{key:"remove",value:function(e,t){for(var n=e%1==0?e:e.scope.$index,r=e%1==0?t:"isTop"===e._op,i=this.length-1;0<=i;i--)if(this[i].index===n){this.splice(i,1);break}if(!r)for(var o=this.length-1;0<=o;o--)this[o].index>n&&this[o].index--}},{key:"clear",value:function(){this.length=0}}]),e}();function d(){var e=[];return e.push.apply(e,arguments),Object.setPrototypeOf(e,d.prototype),e}d.prototype=Object.create(Array.prototype),Object.getOwnPropertyNames(f.prototype).forEach(function(e){return d.prototype[e]=f.prototype[e]});var h=function(){function t(e){u(this,t),this.element=function(e){if(e.nodeType!==Node.ELEMENT_NODE)throw new Error("ui-scroll directive requires an Element node for templating the view");var t;switch(e.tagName.toLowerCase()){case"dl":throw new Error("ui-scroll directive does not support <".concat(e.tagName,"> as a repeating tag: ").concat(e.outerHTML));case"tr":t=angular.element("
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t=f.height()-e;for(o.scrollTop(o.scrollTop()+t);0<(t-=o.scrollTop());)d.height(d.height()+t),o.scrollTop(o.scrollTop()+t)}},onAfterPrepend:function(e){if(e.prepended.length){var t=c.effectiveHeight(e.prepended),n=f.height()-t;0<=n?f.height(n):(f.height(0),o.scrollTop(o.scrollTop()-n))}},resetTopPadding:function(){f.height(0),f.cache.clear()},resetBottomPadding:function(){d.height(0),d.cache.clear()},removeCacheItem:function(e,t){f.cache.remove(e,t),d.cache.remove(e,t)},removeItem:function(e){return this.removeCacheItem(e),c.remove(e)}}),o}function p(e,t){for(var n=0;n=this.buffer.getAbsMinIndex()&&e<=this.buffer.getAbsMaxIndex()&&angular.isArray(t)&&!t.length&&(this.viewport.removeCacheItem(e,e===this.buffer.minIndex),e===this.buffer.getAbsMinIndex()?this.buffer.incrementMinIndex():this.buffer.decrementMaxIndex())}},{key:"applyUpdate",value:function(t,e){var n=this;if(angular.isArray(e)){var r=this.buffer.indexOf(t);e.reverse().some(function(e){return e===t.item})||(t.op="remove",0!==r||e.length||(t._op="isTop")),e.forEach(function(e){e===t.item?r--:n.buffer.insert(r+1,e,-1===r)})}}},{key:"calculateProperties",value:function(){for(var e=null,t=0,n=!1,r=!1,i=this.buffer.length,o=0;othis.viewport.topVisiblePos()&&(n=!0,this.topVisible=a.item,this.topVisibleElement=a.element,this.topVisibleScope=a.scope),!r&&(l>=this.viewport.bottomVisiblePos()||o===i-1&&this.isEOF())&&(r=!0,this.bottomVisible=a.item,this.bottomVisibleElement=a.element,this.bottomVisibleScope=a.scope),t+=u}if(e=s,n&&r)break}}}])&&p(e.prototype,t),n&&p(e,n),u}();angular.module("ui.scroll",[]).constant("JQLiteExtras",r).run(["JQLiteExtras",function(e){var t=angular.element;!(window.jQuery&&t.fn&&t.fn.jquery)&&(new e).registerFor(t),z.addCSSRules()}]).directive("uiScrollViewport",function(){return{restrict:"A",controller:["$scope","$element",function(e,t){var n=this;return this.container=t,this.viewport=t,this.scope=e,angular.forEach(t.children(),function(e){"tbody"===e.tagName.toLowerCase()&&(n.viewport=angular.element(e))}),this}]}}).directive("uiScroll",["$log","$injector","$rootScope","$timeout","$interval","$q","$parse",function(e,B,D,F,R,W,q){return{require:["?^uiScrollViewport"],restrict:"A",transclude:"element",priority:1e3,terminal:!0,link:function(i,e,t,n,a){var r=t.uiScroll.match(/^\s*(\w+)\s+in\s+([(\w|\$)\.]+)\s*$/);if(!r)throw new Error("Expected uiScroll in form of '_item_ in _datasource_' but got '"+t.uiScroll+"'");function o(e,t,n){return n||(e=null===e?t:Math.floor(e)),isNaN(e)?t:e}function s(e,t,n){var r=q(e)(i);return o(r,t,n)}var u=null,l=r[1],c=r[2],f=n[0],d=Math.max(3,s(t.bufferSize,10)),h=Math.max(.3,s(t.padding,.5,!0)),p=s(t.startIndex,1),m=0,g=[],v=new z(B,W),b=new Q(v,d,p),x=new X(v,b,e,f,D,h),y=new Y(i,q,t,x,b,C,function(){x.resetTopPadding(),x.resetBottomPadding(),arguments.length&&(p=o(arguments[0],1,!1));b.reset(p),E(u,"minIndex"),E(u,"maxIndex"),C()});f&&(f.adapter=y);var w=function(){return"[object Object]"===Object.prototype.toString.call(u)&&"function"==typeof u.get};if(u=q(c)(i),!w()&&(u=B.get(c),!w()))throw new Error(c+" is not a valid datasource");var I=[];function E(e,t){var n;angular.isNumber(e[t])&&(n=e[t],angular.isNumber(n)&&(I=I.filter(function(e){return e.id!==t})).push({id:t,run:function(){return e[t]=n}}))}function $(n,r,i){var o,e=Object.getOwnPropertyDescriptor(n,r);e&&(e.set||e.get)||(E(n,r),Object.defineProperty(n,r,{set:function(e){if(o=e,!g.length||b.length){b[i]=e;var t=x.topDataPos();x.adjustPaddings(),"minIndex"===r&&x.onAfterMinIndexSet(t)}else E(n,r)},get:function(){return o}}))}$(u,"minIndex","minIndexUser"),$(u,"maxIndex","maxIndexUser");var P=2!==u.get.length?function(e){return u.get(b.next,d,e)}:function(e){u.get({index:b.next,append:b.length?b[b.length-1].item:void 0,count:d},e)},T=2!==u.get.length?function(e){return u.get(b.first-d,d,e)}:function(e){u.get({index:b.first-d,prepend:b.length?b[0].item:void 0,count:d},e)};function S(e){return e&&e!==m||i.$$destroyed}function k(){x.unbind("resize",_),x.unbind("scroll",_)}function A(e){return e.element.height()&&e.element[0].offsetParent}function O(e,t){j(e,t,x.insertElement),A(e)||(e.unregisterVisibilityWatcher=e.scope.$watch(function(){A(e)&&(b.forEach(function(e){"function"==typeof e.unregisterVisibilityWatcher&&(e.unregisterVisibilityWatcher(),delete e.unregisterVisibilityWatcher)}),g.length||F(function(){return C()}))})),v.hideElement(e)}function j(n,e,r){var i=null,o=0 obj && obj.document && obj.location && obj.alert && obj.setInterval;\r\n\r\n function scrollTo(self, direction, value) {\r\n let elem = self[0];\r\n let [method, prop, preserve] = {\r\n top: [\r\n 'scrollTop',\r\n 'pageYOffset',\r\n 'scrollLeft'\r\n ],\r\n left: [\r\n 'scrollLeft',\r\n 'pageXOffset',\r\n 'scrollTop'\r\n ]\r\n }[direction];\r\n\r\n const isValueDefined = typeof value !== 'undefined';\r\n if (isWindow(elem)) {\r\n if (isValueDefined) {\r\n return elem.scrollTo(self[preserve].call(self), value);\r\n }\r\n return (prop in elem) ? elem[prop] : elem.document.documentElement[method];\r\n } else {\r\n if (isValueDefined) {\r\n elem[method] = value;\r\n }\r\n return elem[method];\r\n }\r\n }\r\n\r\n if (window.getComputedStyle) {\r\n getStyle = (elem) => window.getComputedStyle(elem, null);\r\n convertToPx = (elem, value) => parseFloat(value);\r\n } else {\r\n getStyle = (elem) => elem.currentStyle;\r\n convertToPx = (elem, value) => {\r\n let left, result, rs, rsLeft, style;\r\n let core_pnum = /[+-]?(?:\\d*\\.|)\\d+(?:[eE][+-]?\\d+|)/.source;\r\n let rnumnonpx = new RegExp('^(' + core_pnum + ')(?!px)[a-z%]+$', 'i');\r\n\r\n if (!rnumnonpx.test(value)) {\r\n return parseFloat(value);\r\n }\r\n\r\n // ported from JQuery\r\n style = elem.style;\r\n left = style.left;\r\n rs = elem.runtimeStyle;\r\n rsLeft = rs && rs.left;\r\n if (rs) {\r\n rs.left = style.left;\r\n }\r\n // put in the new values to get a computed style out\r\n style.left = value;\r\n result = style.pixelLeft;\r\n style.left = left;\r\n if (rsLeft) {\r\n rs.left = rsLeft;\r\n }\r\n return result;\r\n };\r\n }\r\n\r\n function getMeasurements(elem, measure) {\r\n let base, borderA, borderB, computedMarginA, computedMarginB, computedStyle, dirA, dirB, marginA, marginB, paddingA, paddingB;\r\n\r\n if (isWindow(elem)) {\r\n base = document.documentElement[{height: 'clientHeight', width: 'clientWidth'}[measure]];\r\n\r\n return {\r\n base: base,\r\n padding: 0,\r\n border: 0,\r\n margin: 0\r\n };\r\n }\r\n\r\n // Start with offset property\r\n [\r\n base,\r\n dirA,\r\n dirB\r\n ] = {\r\n width: [\r\n elem.offsetWidth,\r\n 'Left',\r\n 'Right'\r\n ],\r\n height: [\r\n elem.offsetHeight,\r\n 'Top',\r\n 'Bottom'\r\n ]\r\n }[measure];\r\n\r\n computedStyle = getStyle(elem);\r\n paddingA = convertToPx(elem, computedStyle['padding' + dirA]) || 0;\r\n paddingB = convertToPx(elem, computedStyle['padding' + dirB]) || 0;\r\n borderA = convertToPx(elem, computedStyle['border' + dirA + 'Width']) || 0;\r\n borderB = convertToPx(elem, computedStyle['border' + dirB + 'Width']) || 0;\r\n computedMarginA = computedStyle['margin' + dirA];\r\n computedMarginB = computedStyle['margin' + dirB];\r\n\r\n // I do not care for width for now, so this hack is irrelevant\r\n // if ( !supportsPercentMargin )\r\n // computedMarginA = hackPercentMargin( elem, computedStyle, computedMarginA )\r\n // computedMarginB = hackPercentMargin( elem, computedStyle, computedMarginB )\r\n marginA = convertToPx(elem, computedMarginA) || 0;\r\n marginB = convertToPx(elem, computedMarginB) || 0;\r\n\r\n return {\r\n base: base,\r\n padding: paddingA + paddingB,\r\n border: borderA + borderB,\r\n margin: marginA + marginB\r\n };\r\n }\r\n\r\n function getWidthHeight(elem, direction, measure) {\r\n let computedStyle, result;\r\n\r\n let measurements = getMeasurements(elem, direction);\r\n\r\n if (measurements.base > 0) {\r\n return {\r\n base: measurements.base - measurements.padding - measurements.border,\r\n outer: measurements.base,\r\n outerfull: measurements.base + measurements.margin\r\n }[measure];\r\n }\r\n\r\n // Fall back to computed then uncomputed css if necessary\r\n computedStyle = getStyle(elem);\r\n result = computedStyle[direction];\r\n\r\n if (result < 0 || result === null) {\r\n result = elem.style[direction] || 0;\r\n }\r\n\r\n // Normalize \"\", auto, and prepare for extra\r\n result = parseFloat(result) || 0;\r\n\r\n return {\r\n base: result - measurements.padding - measurements.border,\r\n outer: result,\r\n outerfull: result + measurements.padding + measurements.border + measurements.margin\r\n }[measure];\r\n }\r\n\r\n // define missing methods\r\n return angular.forEach({\r\n before(newElem) {\r\n var children, elem, i, j, parent, ref, self;\r\n self = this;\r\n elem = self[0];\r\n parent = self.parent();\r\n children = parent.contents();\r\n if (children[0] === elem) {\r\n return parent.prepend(newElem);\r\n } else {\r\n for (i = j = 1, ref = children.length - 1; 1 <= ref ? j <= ref : j >= ref; i = 1 <= ref ? ++j : --j) {\r\n if (children[i] === elem) {\r\n angular.element(children[i - 1]).after(newElem);\r\n return;\r\n }\r\n }\r\n throw new Error('invalid DOM structure ' + elem.outerHTML);\r\n }\r\n },\r\n height (value){\r\n var self;\r\n self = this;\r\n if (typeof value !== 'undefined') {\r\n if (angular.isNumber(value)) {\r\n value = value + 'px';\r\n }\r\n return css.call(self, 'height', value);\r\n } else {\r\n return getWidthHeight(this[0], 'height', 'base');\r\n }\r\n },\r\n outerHeight(option) {\r\n return getWidthHeight(this[0], 'height', option ? 'outerfull' : 'outer');\r\n },\r\n outerWidth(option) {\r\n return getWidthHeight(this[0], 'width', option ? 'outerfull' : 'outer');\r\n },\r\n\r\n /*\r\n The offset setter method is not implemented\r\n */\r\n offset(value) {\r\n let docElem, win;\r\n let self = this;\r\n let box = {\r\n top: 0,\r\n left: 0\r\n };\r\n let elem = self[0];\r\n let doc = elem && elem.ownerDocument;\r\n\r\n if (arguments.length) {\r\n if (value === undefined) {\r\n return self;\r\n }\r\n // TODO: implement setter\r\n throw new Error('offset setter method is not implemented');\r\n }\r\n\r\n if (!doc) {\r\n return;\r\n }\r\n\r\n docElem = doc.documentElement;\r\n\r\n // TODO: Make sure it's not a disconnected DOM node\r\n\r\n if (elem.getBoundingClientRect != null) {\r\n box = elem.getBoundingClientRect();\r\n }\r\n\r\n win = doc.defaultView || doc.parentWindow;\r\n\r\n return {\r\n top: box.top + (win.pageYOffset || docElem.scrollTop) - (docElem.clientTop || 0),\r\n left: box.left + (win.pageXOffset || docElem.scrollLeft) - (docElem.clientLeft || 0)\r\n };\r\n },\r\n scrollTop(value) {\r\n return scrollTo(this, 'top', value);\r\n },\r\n scrollLeft(value) {\r\n return scrollTo(this, 'left', value);\r\n }\r\n }, (value, key) => {\r\n if (!element.prototype[key]) {\r\n return element.prototype[key] = value;\r\n }\r\n });\r\n }\r\n\r\n}\r\n","const hideClassToken = 'ng-ui-scroll-hide';\r\n\r\nexport default class ElementRoutines {\r\n\r\n static addCSSRules() {\r\n const selector = '.' + hideClassToken;\r\n const rules = 'display: none';\r\n const sheet = document.styleSheets[0];\r\n let index;\r\n try {\r\n index = sheet.cssRules.length;\r\n } catch (err) {\r\n index = 0;\r\n }\r\n if('insertRule' in sheet) {\r\n sheet.insertRule(selector + '{' + rules + '}', index);\r\n }\r\n else if('addRule' in sheet) {\r\n sheet.addRule(selector, rules, index);\r\n }\r\n }\r\n\r\n constructor($injector, $q) {\r\n this.$animate = ($injector.has && $injector.has('$animate')) ? $injector.get('$animate') : null;\r\n this.isAngularVersionLessThen1_3 = angular.version.major === 1 && angular.version.minor < 3;\r\n this.$q = $q;\r\n }\r\n\r\n hideElement(wrapper) {\r\n wrapper.element.addClass(hideClassToken);\r\n }\r\n\r\n showElement(wrapper) {\r\n wrapper.element.removeClass(hideClassToken);\r\n }\r\n\r\n insertElement(newElement, previousElement) {\r\n previousElement.after(newElement);\r\n return [];\r\n }\r\n\r\n removeElement(wrapper) {\r\n wrapper.element.remove();\r\n wrapper.scope.$destroy();\r\n return [];\r\n }\r\n\r\n insertElementAnimated(newElement, previousElement) {\r\n if (!this.$animate) {\r\n return this.insertElement(newElement, previousElement);\r\n }\r\n\r\n if (this.isAngularVersionLessThen1_3) {\r\n const deferred = this.$q.defer();\r\n // no need for parent - previous element is never null\r\n this.$animate.enter(newElement, null, previousElement, () => deferred.resolve());\r\n\r\n return [deferred.promise];\r\n }\r\n\r\n // no need for parent - previous element is never null\r\n return [this.$animate.enter(newElement, null, previousElement)];\r\n }\r\n\r\n removeElementAnimated(wrapper) {\r\n if (!this.$animate) {\r\n return this.removeElement(wrapper);\r\n }\r\n\r\n if (this.isAngularVersionLessThen1_3) {\r\n const deferred = this.$q.defer();\r\n this.$animate.leave(wrapper.element, () => {\r\n wrapper.scope.$destroy();\r\n return deferred.resolve();\r\n });\r\n\r\n return [deferred.promise];\r\n }\r\n\r\n return [(this.$animate.leave(wrapper.element)).then(() => wrapper.scope.$destroy())];\r\n }\r\n}","export default function ScrollBuffer(elementRoutines, bufferSize, startIndex) {\r\n const buffer = Object.create(Array.prototype);\r\n\r\n angular.extend(buffer, {\r\n size: bufferSize,\r\n\r\n reset(startIndex) {\r\n buffer.remove(0, buffer.length);\r\n buffer.eof = false;\r\n buffer.bof = false;\r\n buffer.first = startIndex;\r\n buffer.next = startIndex;\r\n buffer.minIndex = startIndex;\r\n buffer.maxIndex = startIndex;\r\n buffer.minIndexUser = null;\r\n buffer.maxIndexUser = null;\r\n },\r\n\r\n append(items) {\r\n items.forEach((item) => {\r\n ++buffer.next;\r\n buffer.insert('append', item);\r\n });\r\n buffer.maxIndex = buffer.eof ? buffer.next - 1 : Math.max(buffer.next - 1, buffer.maxIndex);\r\n },\r\n\r\n prepend(items) {\r\n items.reverse().forEach((item) => {\r\n --buffer.first;\r\n buffer.insert('prepend', item);\r\n });\r\n buffer.minIndex = buffer.bof ? buffer.minIndex = buffer.first : Math.min(buffer.first, buffer.minIndex);\r\n },\r\n\r\n /**\r\n * inserts wrapped element in the buffer\r\n * the first argument is either operation keyword (see below) or a number for operation 'insert'\r\n * for insert the number is the index for the buffer element the new one have to be inserted after\r\n * operations: 'append', 'prepend', 'insert', 'remove', 'update', 'none'\r\n */\r\n insert(operation, item, isTop) {\r\n const wrapper = {\r\n item: item\r\n };\r\n\r\n if (operation % 1 === 0) {// it is an insert\r\n wrapper.op = 'insert';\r\n buffer.splice(operation, 0, wrapper);\r\n if(isTop) {\r\n buffer.first--;\r\n }\r\n else {\r\n buffer.next++;\r\n }\r\n } else {\r\n wrapper.op = operation;\r\n switch (operation) {\r\n case 'append':\r\n buffer.push(wrapper);\r\n break;\r\n case 'prepend':\r\n buffer.unshift(wrapper);\r\n break;\r\n }\r\n }\r\n },\r\n\r\n // removes elements from buffer\r\n remove(arg1, arg2) {\r\n if (angular.isNumber(arg1)) {\r\n // removes items from arg1 (including) through arg2 (excluding)\r\n for (let i = arg1; i < arg2; i++) {\r\n elementRoutines.removeElement(buffer[i]);\r\n }\r\n return buffer.splice(arg1, arg2 - arg1);\r\n }\r\n // removes single item(wrapper) from the buffer\r\n buffer.splice(buffer.indexOf(arg1), 1);\r\n if(arg1._op === 'isTop' && buffer.first === this.getAbsMinIndex()) {\r\n this.incrementMinIndex();\r\n }\r\n else {\r\n this.decrementMaxIndex();\r\n }\r\n if(arg1._op === 'isTop') {\r\n buffer.first++;\r\n }\r\n else {\r\n buffer.next--;\r\n }\r\n if(!buffer.length) {\r\n buffer.first = 1;\r\n buffer.next = 1;\r\n }\r\n\r\n return elementRoutines.removeElementAnimated(arg1);\r\n },\r\n\r\n incrementMinIndex() {\r\n if(buffer.minIndexUser !== null) {\r\n if(buffer.minIndex > buffer.minIndexUser) {\r\n buffer.minIndexUser++;\r\n return;\r\n }\r\n if(buffer.minIndex === buffer.minIndexUser) {\r\n buffer.minIndexUser++;\r\n }\r\n }\r\n buffer.minIndex++;\r\n },\r\n\r\n decrementMaxIndex() {\r\n if(buffer.maxIndexUser !== null && buffer.maxIndex <= buffer.maxIndexUser) {\r\n buffer.maxIndexUser--;\r\n }\r\n buffer.maxIndex--;\r\n },\r\n\r\n getAbsMinIndex() {\r\n if(buffer.minIndexUser !== null) {\r\n return Math.min(buffer.minIndexUser, buffer.minIndex);\r\n }\r\n return buffer.minIndex;\r\n },\r\n\r\n getAbsMaxIndex() {\r\n if(buffer.maxIndexUser !== null) {\r\n return Math.max(buffer.maxIndexUser, buffer.maxIndex);\r\n }\r\n return buffer.maxIndex;\r\n },\r\n\r\n effectiveHeight(elements) {\r\n if (!elements.length) {\r\n return 0;\r\n }\r\n let top = Number.MAX_VALUE;\r\n let bottom = Number.NEGATIVE_INFINITY;\r\n elements.forEach((wrapper) => {\r\n if (wrapper.element[0].offsetParent) {\r\n // element style is not display:none\r\n top = Math.min(top, wrapper.element.offset().top);\r\n bottom = Math.max(bottom, wrapper.element.offset().top + wrapper.element.outerHeight(true));\r\n }\r\n });\r\n return Math.max(0, bottom - top);\r\n }\r\n\r\n });\r\n\r\n buffer.reset(startIndex);\r\n\r\n return buffer;\r\n}\r\n","// Can't just extend the Array, due to Babel does not support built-in classes extending\r\n// This solution was taken from https://stackoverflow.com/questions/46897414/es6-class-extends-array-workaround-for-es5-babel-transpile\r\nclass CacheProto {\r\n add(item) {\r\n for (let i = this.length - 1; i >= 0; i--) {\r\n if (this[i].index === item.scope.$index) {\r\n this[i].height = item.element.outerHeight();\r\n return;\r\n }\r\n }\r\n this.push({\r\n index: item.scope.$index,\r\n height: item.element.outerHeight()\r\n });\r\n this.sort((a, b) => ((a.index < b.index) ? -1 : ((a.index > b.index) ? 1 : 0)));\r\n }\r\n\r\n remove(argument, _isTop) {\r\n const index = argument % 1 === 0 ? argument : argument.scope.$index;\r\n const isTop = argument % 1 === 0 ? _isTop : argument._op === 'isTop';\r\n for (let i = this.length - 1; i >= 0; i--) {\r\n if (this[i].index === index) {\r\n this.splice(i, 1);\r\n break;\r\n }\r\n }\r\n if(!isTop) {\r\n for (let i = this.length - 1; i >= 0; i--) {\r\n if (this[i].index > index) {\r\n this[i].index--;\r\n }\r\n }\r\n }\r\n }\r\n\r\n clear() {\r\n this.length = 0;\r\n }\r\n}\r\n\r\nfunction Cache() {\r\n const instance = [];\r\n instance.push.apply(instance, arguments);\r\n Object.setPrototypeOf(instance, Cache.prototype);\r\n return instance;\r\n}\r\nCache.prototype = Object.create(Array.prototype);\r\nObject.getOwnPropertyNames(CacheProto.prototype).forEach(methodName =>\r\n Cache.prototype[methodName] = CacheProto.prototype[methodName]\r\n);\r\n\r\nfunction generateElement(template) {\r\n if(template.nodeType !== Node.ELEMENT_NODE) {\r\n throw new Error('ui-scroll directive requires an Element node for templating the view');\r\n }\r\n let element;\r\n switch (template.tagName.toLowerCase()) {\r\n case 'dl':\r\n throw new Error(`ui-scroll directive does not support <${template.tagName}> as a repeating tag: ${template.outerHTML}`);\r\n case 'tr':\r\n let table = angular.element('
    ');\r\n element = table.find('tr');\r\n break;\r\n case 'li':\r\n element = angular.element('
  • ');\r\n break;\r\n default:\r\n element = angular.element('
    ');\r\n }\r\n return element;\r\n}\r\n\r\nclass Padding {\r\n constructor(template) {\r\n this.element = generateElement(template);\r\n this.cache = new Cache();\r\n }\r\n\r\n height() {\r\n return this.element.height.apply(this.element, arguments);\r\n }\r\n}\r\n\r\nexport default Padding;","import Padding from './padding';\r\n\r\nexport default function Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding) {\r\n let topPadding = null;\r\n let bottomPadding = null;\r\n const viewport = viewportController && viewportController.viewport ? viewportController.viewport : angular.element(window);\r\n const container = viewportController && viewportController.container ? viewportController.container : undefined;\r\n const scope = viewportController && viewportController.scope ? viewportController.scope : $rootScope;\r\n\r\n viewport.css({\r\n 'overflow-anchor': 'none',\r\n 'overflow-y': 'auto',\r\n 'display': 'block'\r\n });\r\n\r\n function bufferPadding() {\r\n return viewport.outerHeight() * padding; // some extra space to initiate preload\r\n }\r\n\r\n angular.extend(viewport, {\r\n getScope() {\r\n return scope;\r\n },\r\n\r\n createPaddingElements(template) {\r\n topPadding = new Padding(template);\r\n bottomPadding = new Padding(template);\r\n element.before(topPadding.element);\r\n element.after(bottomPadding.element);\r\n topPadding.height(0);\r\n bottomPadding.height(0);\r\n },\r\n\r\n applyContainerStyle() {\r\n if (!container) {\r\n return true;\r\n }\r\n if(container !== viewport) {\r\n viewport.css('height', window.getComputedStyle(container[0]).height);\r\n }\r\n return viewport.height() > 0;\r\n },\r\n\r\n bottomDataPos() {\r\n let scrollHeight = viewport[0].scrollHeight;\r\n scrollHeight = scrollHeight != null ? scrollHeight : viewport[0].document.documentElement.scrollHeight;\r\n return scrollHeight - bottomPadding.height();\r\n },\r\n\r\n topDataPos() {\r\n return topPadding.height();\r\n },\r\n\r\n bottomVisiblePos() {\r\n return viewport.scrollTop() + viewport.outerHeight();\r\n },\r\n\r\n topVisiblePos() {\r\n return viewport.scrollTop();\r\n },\r\n\r\n insertElement(e, sibling) {\r\n return elementRoutines.insertElement(e, sibling || topPadding.element);\r\n },\r\n\r\n insertElementAnimated(e, sibling) {\r\n return elementRoutines.insertElementAnimated(e, sibling || topPadding.element);\r\n },\r\n\r\n shouldLoadBottom() {\r\n return !buffer.eof && viewport.bottomDataPos() < viewport.bottomVisiblePos() + bufferPadding();\r\n },\r\n\r\n clipBottom() {\r\n // clip the invisible items off the bottom\r\n let overage = 0;\r\n let overageHeight = 0;\r\n let itemHeight = 0;\r\n let emptySpaceHeight = viewport.bottomDataPos() - viewport.bottomVisiblePos() - bufferPadding();\r\n\r\n for (let i = buffer.length - 1; i >= 0; i--) {\r\n itemHeight = buffer[i].element.outerHeight(true);\r\n if (overageHeight + itemHeight > emptySpaceHeight) {\r\n break;\r\n }\r\n bottomPadding.cache.add(buffer[i]);\r\n overageHeight += itemHeight;\r\n overage++;\r\n }\r\n\r\n if (overage > 0) {\r\n buffer.eof = false;\r\n buffer.remove(buffer.length - overage, buffer.length);\r\n buffer.next -= overage;\r\n viewport.adjustPaddings();\r\n }\r\n },\r\n\r\n shouldLoadTop() {\r\n return !buffer.bof && (viewport.topDataPos() > viewport.topVisiblePos() - bufferPadding());\r\n },\r\n\r\n clipTop() {\r\n // clip the invisible items off the top\r\n let overage = 0;\r\n let overageHeight = 0;\r\n let itemHeight = 0;\r\n let emptySpaceHeight = viewport.topVisiblePos() - viewport.topDataPos() - bufferPadding();\r\n\r\n for (let i = 0; i < buffer.length; i++) {\r\n itemHeight = buffer[i].element.outerHeight(true);\r\n if (overageHeight + itemHeight > emptySpaceHeight) {\r\n break;\r\n }\r\n topPadding.cache.add(buffer[i]);\r\n overageHeight += itemHeight;\r\n overage++;\r\n }\r\n\r\n if (overage > 0) {\r\n // we need to adjust top padding element before items are removed from top\r\n // to avoid strange behaviour of scroll bar during remove top items when we are at the very bottom\r\n topPadding.height(topPadding.height() + overageHeight);\r\n buffer.bof = false;\r\n buffer.remove(0, overage);\r\n buffer.first += overage;\r\n }\r\n },\r\n\r\n adjustPaddings() {\r\n if (!buffer.length) {\r\n return;\r\n }\r\n\r\n // precise heights calculation based on items that are in buffer or that were in buffer once\r\n const visibleItemsHeight = buffer.reduce((summ, item) => summ + item.element.outerHeight(true), 0);\r\n\r\n let topPaddingHeight = 0, topCount = 0;\r\n topPadding.cache.forEach(item => {\r\n if(item.index < buffer.first) {\r\n topPaddingHeight += item.height;\r\n topCount++;\r\n }\r\n });\r\n\r\n let bottomPaddingHeight = 0, bottomCount = 0;\r\n bottomPadding.cache.forEach(item => {\r\n if(item.index >= buffer.next) {\r\n bottomPaddingHeight += item.height;\r\n bottomCount++;\r\n }\r\n });\r\n\r\n const totalHeight = visibleItemsHeight + topPaddingHeight + bottomPaddingHeight;\r\n const averageItemHeight = totalHeight / (topCount + bottomCount + buffer.length);\r\n\r\n // average heights calculation, items that have never been reached\r\n let adjustTopPadding = buffer.minIndexUser !== null && buffer.minIndex > buffer.minIndexUser;\r\n let adjustBottomPadding = buffer.maxIndexUser !== null && buffer.maxIndex < buffer.maxIndexUser;\r\n let topPaddingHeightAdd = adjustTopPadding ? (buffer.minIndex - buffer.minIndexUser) * averageItemHeight : 0;\r\n let bottomPaddingHeightAdd = adjustBottomPadding ? (buffer.maxIndexUser - buffer.maxIndex) * averageItemHeight : 0;\r\n\r\n // paddings combine adjustment\r\n topPadding.height(topPaddingHeight + topPaddingHeightAdd);\r\n bottomPadding.height(bottomPaddingHeight + bottomPaddingHeightAdd);\r\n },\r\n\r\n onAfterMinIndexSet(topPaddingHeightOld) {\r\n // additional scrollTop adjustment in case of datasource.minIndex external set\r\n if (buffer.minIndexUser !== null && buffer.minIndex > buffer.minIndexUser) {\r\n let diff = topPadding.height() - topPaddingHeightOld;\r\n viewport.scrollTop(viewport.scrollTop() + diff);\r\n while((diff -= viewport.scrollTop()) > 0) {\r\n bottomPadding.height(bottomPadding.height() + diff);\r\n viewport.scrollTop(viewport.scrollTop() + diff);\r\n }\r\n }\r\n },\r\n\r\n onAfterPrepend(updates) {\r\n if (!updates.prepended.length)\r\n return;\r\n const height = buffer.effectiveHeight(updates.prepended);\r\n const paddingHeight = topPadding.height() - height;\r\n if (paddingHeight >= 0) {\r\n topPadding.height(paddingHeight);\r\n }\r\n else {\r\n topPadding.height(0);\r\n viewport.scrollTop(viewport.scrollTop() - paddingHeight);\r\n }\r\n },\r\n\r\n resetTopPadding() {\r\n topPadding.height(0);\r\n topPadding.cache.clear();\r\n },\r\n\r\n resetBottomPadding() {\r\n bottomPadding.height(0);\r\n bottomPadding.cache.clear();\r\n },\r\n\r\n removeCacheItem(item, isTop) {\r\n topPadding.cache.remove(item, isTop);\r\n bottomPadding.cache.remove(item, isTop);\r\n },\r\n\r\n removeItem(item) {\r\n this.removeCacheItem(item);\r\n return buffer.remove(item);\r\n }\r\n });\r\n\r\n return viewport;\r\n}\r\n","class Adapter {\r\n\r\n constructor($scope, $parse, $attr, viewport, buffer, doAdjust, reload) {\r\n this.$parse = $parse;\r\n this.$attr = $attr;\r\n this.viewport = viewport;\r\n this.buffer = buffer;\r\n\r\n this.doAdjust = doAdjust;\r\n this.reload = reload;\r\n\r\n this.isLoading = false;\r\n this.disabled = false;\r\n\r\n const viewportScope = viewport.getScope();\r\n this.startScope = viewportScope.$parent ? viewportScope : $scope;\r\n\r\n this.publicContext = {};\r\n this.assignAdapter($attr.adapter);\r\n this.generatePublicContext();\r\n }\r\n\r\n assignAdapter(adapterAttr) {\r\n if (!adapterAttr || !(adapterAttr = adapterAttr.replace(/^\\s+|\\s+$/gm, ''))) {\r\n return;\r\n }\r\n let adapterOnScope;\r\n\r\n try {\r\n this.$parse(adapterAttr).assign(this.startScope, {});\r\n adapterOnScope = this.$parse(adapterAttr)(this.startScope);\r\n }\r\n catch (error) {\r\n error.message = `Angular ui-scroll Adapter assignment exception.\\n` +\r\n `Can't parse \"${adapterAttr}\" expression.\\n` +\r\n error.message;\r\n throw error;\r\n }\r\n\r\n angular.extend(adapterOnScope, this.publicContext);\r\n this.publicContext = adapterOnScope;\r\n }\r\n\r\n generatePublicContext() {\r\n // these methods will be accessible out of ui-scroll via user defined adapter\r\n const publicMethods = ['reload', 'applyUpdates', 'append', 'prepend', 'isBOF', 'isEOF', 'isEmpty'];\r\n for (let i = publicMethods.length - 1; i >= 0; i--) {\r\n this.publicContext[publicMethods[i]] = this[publicMethods[i]].bind(this);\r\n }\r\n\r\n // these read-only props will be accessible out of ui-scroll via user defined adapter\r\n const publicProps = ['isLoading', 'topVisible', 'topVisibleElement', 'topVisibleScope', 'bottomVisible', 'bottomVisibleElement', 'bottomVisibleScope'];\r\n for (let i = publicProps.length - 1; i >= 0; i--) {\r\n let property, attr = this.$attr[publicProps[i]];\r\n Object.defineProperty(this, publicProps[i], {\r\n get: () => property,\r\n set: (value) => {\r\n property = value;\r\n this.publicContext[publicProps[i]] = value;\r\n if (attr) {\r\n this.$parse(attr).assign(this.startScope, value);\r\n }\r\n }\r\n });\r\n }\r\n\r\n // non-read-only public property\r\n Object.defineProperty(this.publicContext, 'disabled', {\r\n get: () => this.disabled,\r\n set: (value) => (!(this.disabled = value)) ? this.doAdjust() : null\r\n });\r\n }\r\n\r\n loading(value) {\r\n this.isLoading = value;\r\n }\r\n\r\n isBOF() {\r\n return this.buffer.bof;\r\n }\r\n\r\n isEOF() {\r\n return this.buffer.eof;\r\n }\r\n\r\n isEmpty() {\r\n return !this.buffer.length;\r\n }\r\n\r\n append(newItems) {\r\n this.buffer.append(newItems);\r\n this.doAdjust();\r\n this.viewport.clipTop();\r\n this.viewport.clipBottom();\r\n }\r\n\r\n prepend(newItems) {\r\n this.buffer.prepend(newItems);\r\n this.doAdjust();\r\n this.viewport.clipTop();\r\n this.viewport.clipBottom();\r\n }\r\n\r\n applyUpdates(arg1, arg2) {\r\n if (typeof arg1 === 'function') {\r\n this.applyUpdatesFunc(arg1);\r\n } else {\r\n this.applyUpdatesIndex(arg1, arg2);\r\n }\r\n this.doAdjust();\r\n }\r\n\r\n applyUpdatesFunc(cb) {\r\n this.buffer.slice(0).forEach((wrapper) => {\r\n // we need to do it on the buffer clone, because buffer content\r\n // may change as we iterate through\r\n this.applyUpdate(wrapper, cb(wrapper.item, wrapper.scope, wrapper.element));\r\n });\r\n }\r\n\r\n applyUpdatesIndex(index, newItems) {\r\n if (index % 1 !== 0) {\r\n throw new Error('applyUpdates - ' + index + ' is not a valid index (should be an integer)');\r\n }\r\n const _index = index - this.buffer.first;\r\n\r\n // apply updates only within buffer\r\n if (_index >= 0 && _index < this.buffer.length) {\r\n this.applyUpdate(this.buffer[_index], newItems);\r\n }\r\n // out-of-buffer case: deletion may affect Paddings\r\n else if(index >= this.buffer.getAbsMinIndex() && index <= this.buffer.getAbsMaxIndex()) {\r\n if(angular.isArray(newItems) && !newItems.length) {\r\n this.viewport.removeCacheItem(index, index === this.buffer.minIndex);\r\n if(index === this.buffer.getAbsMinIndex()) {\r\n this.buffer.incrementMinIndex();\r\n }\r\n else {\r\n this.buffer.decrementMaxIndex();\r\n }\r\n }\r\n }\r\n }\r\n\r\n applyUpdate(wrapper, newItems) {\r\n if (!angular.isArray(newItems)) {\r\n return;\r\n }\r\n let position = this.buffer.indexOf(wrapper);\r\n if (!newItems.reverse().some(newItem => newItem === wrapper.item)) {\r\n wrapper.op = 'remove';\r\n if(position === 0 && !newItems.length) {\r\n wrapper._op = 'isTop'; // to catch \"first\" edge case on remove\r\n }\r\n }\r\n newItems.forEach((newItem) => {\r\n if (newItem === wrapper.item) {\r\n position--;\r\n } else {\r\n // 3 parameter (isTop) is to catch \"first\" edge case on insert\r\n this.buffer.insert(position + 1, newItem, position === -1);\r\n }\r\n });\r\n }\r\n\r\n calculateProperties() {\r\n let rowTop = null, topHeight = 0;\r\n let topDone = false, bottomDone = false;\r\n const length = this.buffer.length;\r\n\r\n for (let i = 0; i < length; i++) {\r\n const item = this.buffer[i];\r\n const itemTop = item.element.offset().top;\r\n\r\n if (rowTop !== itemTop) { // a new row condition\r\n const itemHeight = item.element.outerHeight(true);\r\n const top = this.viewport.topDataPos() + topHeight + itemHeight;\r\n\r\n if (!topDone && top > this.viewport.topVisiblePos()) {\r\n topDone = true;\r\n this['topVisible'] = item.item;\r\n this['topVisibleElement'] = item.element;\r\n this['topVisibleScope'] = item.scope;\r\n }\r\n if (!bottomDone && (top >= this.viewport.bottomVisiblePos() || (i === length - 1 && this.isEOF()))) {\r\n bottomDone = true;\r\n this['bottomVisible'] = item.item;\r\n this['bottomVisibleElement'] = item.element;\r\n this['bottomVisibleScope'] = item.scope;\r\n }\r\n topHeight += itemHeight;\r\n }\r\n rowTop = itemTop;\r\n\r\n if (topDone && bottomDone) {\r\n break;\r\n }\r\n }\r\n }\r\n\r\n}\r\n\r\nexport default Adapter;\r\n","import JQLiteExtras from './modules/jqLiteExtras';\nimport ElementRoutines from './modules/elementRoutines.js';\nimport ScrollBuffer from './modules/buffer.js';\nimport Viewport from './modules/viewport.js';\nimport Adapter from './modules/adapter.js';\n\nangular.module('ui.scroll', [])\n\n .constant('JQLiteExtras', JQLiteExtras)\n .run(['JQLiteExtras', (JQLiteExtras) => {\n !window.jQuery ? (new JQLiteExtras()).registerFor(angular.element) : null;\n ElementRoutines.addCSSRules();\n }])\n\n .directive('uiScrollViewport', function () {\n return {\n restrict: 'A',\n controller: [\n '$scope',\n '$element',\n function (scope, element) {\n this.container = element;\n this.viewport = element;\n this.scope = scope;\n\n angular.forEach(element.children(), child => {\n if (child.tagName.toLowerCase() === 'tbody') {\n this.viewport = angular.element(child);\n }\n });\n\n return this;\n }\n ]\n };\n })\n\n .directive('uiScroll', [\n '$log',\n '$injector',\n '$rootScope',\n '$timeout',\n '$interval',\n '$q',\n '$parse',\n function (console, $injector, $rootScope, $timeout, $interval, $q, $parse) {\n\n return {\n require: ['?^uiScrollViewport'],\n restrict: 'A',\n transclude: 'element',\n priority: 1000,\n terminal: true,\n link: link\n };\n\n function link($scope, element, $attr, controllers, linker) {\n const match = $attr.uiScroll.match(/^\\s*(\\w+)\\s+in\\s+([(\\w|\\$)\\.]+)\\s*$/);\n if (!match) {\n throw new Error('Expected uiScroll in form of \\'_item_ in _datasource_\\' but got \\'' + $attr.uiScroll + '\\'');\n }\n\n function parseNumber(value, defaultValue, isFloat) {\n if (!isFloat) {\n value = value === null ? defaultValue : Math.floor(value);\n }\n return isNaN(value) ? defaultValue : value;\n }\n\n function parseNumericAttr(value, defaultValue, isFloat) {\n const result = $parse(value)($scope);\n return parseNumber(result, defaultValue, isFloat);\n }\n\n const BUFFER_MIN = 3;\n const BUFFER_DEFAULT = 10;\n const PADDING_MIN = 0.3;\n const PADDING_DEFAULT = 0.5;\n const START_INDEX_DEFAULT = 1;\n const MAX_VIEWPORT_DELAY = 500;\n const VIEWPORT_POLLING_INTERVAL = 50;\n\n let datasource = null;\n const itemName = match[1];\n const datasourceName = match[2];\n const viewportController = controllers[0];\n const bufferSize = Math.max(BUFFER_MIN, parseNumericAttr($attr.bufferSize, BUFFER_DEFAULT));\n const padding = Math.max(PADDING_MIN, parseNumericAttr($attr.padding, PADDING_DEFAULT, true));\n let startIndex = parseNumericAttr($attr.startIndex, START_INDEX_DEFAULT);\n let ridActual = 0; // current data revision id\n let pending = [];\n\n const elementRoutines = new ElementRoutines($injector, $q);\n const buffer = new ScrollBuffer(elementRoutines, bufferSize, startIndex);\n const viewport = new Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding);\n const adapter = new Adapter($scope, $parse, $attr, viewport, buffer, doAdjust, reload);\n\n if (viewportController) {\n viewportController.adapter = adapter;\n }\n\n const isDatasourceValid = () =>\n Object.prototype.toString.call(datasource) === '[object Object]' && typeof datasource.get === 'function';\n\n datasource = $parse(datasourceName)($scope); // try to get datasource on scope\n if (!isDatasourceValid()) {\n datasource = $injector.get(datasourceName); // try to inject datasource as service\n if (!isDatasourceValid()) {\n throw new Error(datasourceName + ' is not a valid datasource');\n }\n }\n\n let onRenderHandlers = [];\n function onRenderHandlersRunner() {\n onRenderHandlers.forEach(handler => handler.run());\n onRenderHandlers = [];\n }\n function persistDatasourceIndex(datasource, propName) {\n let getter;\n // need to postpone min/maxIndexUser processing if the view is empty\n if(angular.isNumber(datasource[propName])) {\n getter = datasource[propName];\n if(angular.isNumber(getter)) {\n onRenderHandlers = onRenderHandlers.filter(handler => handler.id !== propName);\n onRenderHandlers.push({\n id: propName,\n run: () => datasource[propName] = getter\n });\n }\n }\n }\n\n function defineDatasourceIndex(datasource, propName, propUserName) {\n const descriptor = Object.getOwnPropertyDescriptor(datasource, propName);\n if (descriptor && (descriptor.set || descriptor.get)) {\n return;\n }\n let getter;\n persistDatasourceIndex(datasource, propName);\n Object.defineProperty(datasource, propName, {\n set: (value) => {\n getter = value;\n if(pending.length && !buffer.length) {\n persistDatasourceIndex(datasource, propName);\n return;\n }\n buffer[propUserName] = value;\n const topPaddingHeightOld = viewport.topDataPos();\n viewport.adjustPaddings();\n if (propName === 'minIndex') {\n viewport.onAfterMinIndexSet(topPaddingHeightOld);\n }\n },\n get: () => getter\n });\n }\n\n defineDatasourceIndex(datasource, 'minIndex', 'minIndexUser');\n defineDatasourceIndex(datasource, 'maxIndex', 'maxIndexUser');\n\n const fetchNext = (datasource.get.length !== 2) ?\n (success) => datasource.get(buffer.next, bufferSize, success) :\n (success) => {\n datasource.get({\n index: buffer.next,\n append: buffer.length ? buffer[buffer.length - 1].item : void 0,\n count: bufferSize\n }, success);\n };\n\n const fetchPrevious = (datasource.get.length !== 2) ?\n (success) => datasource.get(buffer.first - bufferSize, bufferSize, success) :\n (success) => {\n datasource.get({\n index: buffer.first - bufferSize,\n prepend: buffer.length ? buffer[0].item : void 0,\n count: bufferSize\n }, success);\n };\n\n const initialize = () => {\n let tryCount = 0;\n if(!viewport.applyContainerStyle()) {\n const timer = $interval(() => {\n tryCount++;\n if(viewport.applyContainerStyle()) {\n $interval.cancel(timer);\n doAdjust();\n }\n if(tryCount * VIEWPORT_POLLING_INTERVAL >= MAX_VIEWPORT_DELAY) {\n $interval.cancel(timer);\n throw Error(`ui-scroll directive requires a viewport with non-zero height in ${MAX_VIEWPORT_DELAY}ms`);\n }\n }, VIEWPORT_POLLING_INTERVAL);\n }\n else {\n doAdjust();\n }\n };\n\n /**\n * Build padding elements\n *\n * Calling linker is the only way I found to get access to the tag name of the template\n * to prevent the directive scope from pollution a new scope is created and destroyed\n * right after the builder creation is completed\n */\n linker((clone, scope) => {\n viewport.createPaddingElements(clone[0]);\n // we do not include the clone in the DOM. It means that the nested directives will not\n // be able to reach the parent directives, but in this case it is intentional because we\n // created the clone to access the template tag name\n scope.$destroy();\n clone.remove();\n });\n\n $scope.$on('$destroy', () => {\n unbindEvents();\n viewport.unbind('mousewheel', wheelHandler);\n });\n\n viewport.bind('mousewheel', wheelHandler);\n\n initialize();\n\n /* Private function definitions */\n\n function isInvalid(rid) {\n return (rid && rid !== ridActual) || $scope.$$destroyed;\n }\n\n function bindEvents() {\n viewport.bind('resize', resizeAndScrollHandler);\n viewport.bind('scroll', resizeAndScrollHandler);\n }\n\n function unbindEvents() {\n viewport.unbind('resize', resizeAndScrollHandler);\n viewport.unbind('scroll', resizeAndScrollHandler);\n }\n\n function reload() {\n viewport.resetTopPadding();\n viewport.resetBottomPadding();\n if (arguments.length) {\n startIndex = parseNumber(arguments[0], START_INDEX_DEFAULT, false);\n }\n buffer.reset(startIndex);\n persistDatasourceIndex(datasource, 'minIndex');\n persistDatasourceIndex(datasource, 'maxIndex');\n doAdjust();\n }\n\n function isElementVisible(wrapper) {\n return wrapper.element.height() && wrapper.element[0].offsetParent;\n }\n\n function visibilityWatcher(wrapper) {\n if (isElementVisible(wrapper)) {\n buffer.forEach((item) => {\n if (typeof item.unregisterVisibilityWatcher === 'function') {\n item.unregisterVisibilityWatcher();\n delete item.unregisterVisibilityWatcher;\n }\n });\n if (!pending.length) {\n $timeout(() => doAdjust());\n }\n }\n }\n\n function insertWrapperContent(wrapper, insertAfter) {\n createElement(wrapper, insertAfter, viewport.insertElement);\n if (!isElementVisible(wrapper)) {\n wrapper.unregisterVisibilityWatcher = wrapper.scope.$watch(() => visibilityWatcher(wrapper));\n }\n elementRoutines.hideElement(wrapper); // hide inserted elements before data binding\n }\n\n function createElement(wrapper, insertAfter, insertElement) {\n let promises = null;\n const sibling = (insertAfter > 0) ? buffer[insertAfter - 1].element : undefined;\n linker((clone, scope) => {\n promises = insertElement(clone, sibling);\n wrapper.element = clone;\n wrapper.scope = scope;\n scope[itemName] = wrapper.item;\n });\n // ui-scroll-grid apply\n if (adapter.transform) {\n const tdInitializer = wrapper.scope.uiScrollTdInitializer;\n if (tdInitializer && tdInitializer.linking) {\n adapter.transform(wrapper.scope, wrapper.element);\n } else {\n wrapper.scope.uiScrollTdInitializer = {\n onLink: () => adapter.transform(wrapper.scope, wrapper.element),\n scope: wrapper.scope\n };\n }\n }\n return promises;\n }\n\n function updateDOM() {\n let promises = [];\n const toBePrepended = [];\n const toBeRemoved = [];\n const inserted = [];\n\n buffer.forEach((wrapper, i) => {\n switch (wrapper.op) {\n case 'prepend':\n toBePrepended.unshift(wrapper);\n break;\n case 'append':\n insertWrapperContent(wrapper, i);\n wrapper.op = 'none';\n inserted.push(wrapper);\n break;\n case 'insert':\n promises = promises.concat(createElement(wrapper, i, viewport.insertElementAnimated));\n wrapper.op = 'none';\n inserted.push(wrapper);\n break;\n case 'remove':\n toBeRemoved.push(wrapper);\n }\n });\n\n toBeRemoved.forEach((wrapper) => promises = promises.concat(viewport.removeItem(wrapper)));\n\n if (toBePrepended.length)\n toBePrepended.forEach((wrapper) => {\n insertWrapperContent(wrapper);\n wrapper.op = 'none';\n });\n\n buffer.forEach((item, i) => item.scope.$index = buffer.first + i);\n\n return {\n prepended: toBePrepended,\n removed: toBeRemoved,\n inserted: inserted,\n animated: promises\n };\n\n }\n\n function updatePaddings(rid, updates) {\n // schedule another doAdjust after animation completion\n if (updates.animated.length) {\n $q.all(updates.animated).then(() => {\n viewport.adjustPaddings();\n doAdjust(rid);\n });\n } else {\n viewport.adjustPaddings();\n }\n }\n\n function enqueueFetch(rid, updates) {\n if (viewport.shouldLoadBottom()) {\n if (!updates || buffer.effectiveHeight(updates.inserted) > 0) {\n // this means that at least one item appended in the last batch has height > 0\n if (pending.push(true) === 1) {\n adapter.loading(true);\n fetch(rid);\n }\n }\n } else if (viewport.shouldLoadTop()) {\n if ((!updates || buffer.effectiveHeight(updates.prepended) > 0) || pending[0]) {\n // this means that at least one item appended in the last batch has height > 0\n // pending[0] = true means that previous fetch was appending. We need to force at least one prepend\n // BTW there will always be at least 1 element in the pending array because bottom is fetched first\n if (pending.push(false) === 1) {\n adapter.loading(true);\n fetch(rid);\n }\n }\n }\n }\n\n function processUpdates() {\n const updates = updateDOM();\n\n // We need the item bindings to be processed before we can do adjustments\n !$scope.$$phase && !$rootScope.$$phase && $scope.$digest();\n\n updates.inserted.forEach(w => elementRoutines.showElement(w));\n updates.prepended.forEach(w => elementRoutines.showElement(w));\n return updates;\n }\n\n function doAdjust(rid) {\n if (!rid) { // dismiss pending requests\n pending = [];\n rid = ++ridActual;\n }\n\n const updates = processUpdates();\n\n if (isInvalid(rid)) {\n return;\n }\n\n updatePaddings(rid, updates);\n enqueueFetch(rid);\n\n if (!pending.length) {\n adapter.calculateProperties();\n }\n }\n\n function doAdjustAfterFetch(rid) {\n const updates = processUpdates();\n\n 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\t\t__webpack_require__.r(ns);\n \t\tObject.defineProperty(ns, 'default', { enumerable: true, value: value });\n \t\tif(mode & 2 && typeof value != 'string') for(var key in value) __webpack_require__.d(ns, key, function(key) { return value[key]; }.bind(null, key));\n \t\treturn ns;\n \t};\n\n \t// getDefaultExport function for compatibility with non-harmony modules\n \t__webpack_require__.n = function(module) {\n \t\tvar getter = module && module.__esModule ?\n \t\t\tfunction getDefault() { return module['default']; } :\n \t\t\tfunction getModuleExports() { return module; };\n \t\t__webpack_require__.d(getter, 'a', getter);\n \t\treturn getter;\n \t};\n\n \t// Object.prototype.hasOwnProperty.call\n \t__webpack_require__.o = function(object, property) { return Object.prototype.hasOwnProperty.call(object, property); };\n\n \t// __webpack_public_path__\n \t__webpack_require__.p = \"\";\n\n\n \t// Load entry module and return exports\n \treturn __webpack_require__(__webpack_require__.s = 1);\n","/*!\r\n globals: angular, window\r\n List of used element methods available in JQuery but not in JQuery Lite\r\n element.before(elem)\r\n element.height()\r\n element.outerHeight(true)\r\n element.height(value) = only for Top/Bottom padding elements\r\n element.scrollTop()\r\n element.scrollTop(value)\r\n */\r\n\r\nexport default class JQLiteExtras {\r\n\r\n registerFor(element) {\r\n let convertToPx, css, getStyle, isWindow;\r\n // angular implementation blows up if elem is the window\r\n css = angular.element.prototype.css;\r\n\r\n element.prototype.css = function (name, value) {\r\n let self = this;\r\n let elem = self[0];\r\n if (!(!elem || elem.nodeType === 3 || elem.nodeType === 8 || !elem.style)) {\r\n return css.call(self, name, value);\r\n }\r\n };\r\n\r\n // as defined in angularjs v1.0.5\r\n isWindow = (obj) => obj && obj.document && obj.location && obj.alert && obj.setInterval;\r\n\r\n function scrollTo(self, direction, value) {\r\n let elem = self[0];\r\n let [method, prop, preserve] = {\r\n top: [\r\n 'scrollTop',\r\n 'pageYOffset',\r\n 'scrollLeft'\r\n ],\r\n left: [\r\n 'scrollLeft',\r\n 'pageXOffset',\r\n 'scrollTop'\r\n ]\r\n }[direction];\r\n\r\n const isValueDefined = typeof value !== 'undefined';\r\n if (isWindow(elem)) {\r\n if (isValueDefined) {\r\n return elem.scrollTo(self[preserve].call(self), value);\r\n }\r\n return (prop in elem) ? elem[prop] : elem.document.documentElement[method];\r\n } else {\r\n if (isValueDefined) {\r\n elem[method] = value;\r\n }\r\n return elem[method];\r\n }\r\n }\r\n\r\n if (window.getComputedStyle) {\r\n getStyle = (elem) => window.getComputedStyle(elem, null);\r\n convertToPx = (elem, value) => parseFloat(value);\r\n } else {\r\n getStyle = (elem) => elem.currentStyle;\r\n convertToPx = (elem, value) => {\r\n let left, result, rs, rsLeft, style;\r\n let core_pnum = /[+-]?(?:\\d*\\.|)\\d+(?:[eE][+-]?\\d+|)/.source;\r\n let rnumnonpx = new RegExp('^(' + core_pnum + ')(?!px)[a-z%]+$', 'i');\r\n\r\n if (!rnumnonpx.test(value)) {\r\n return parseFloat(value);\r\n }\r\n\r\n // ported from JQuery\r\n style = elem.style;\r\n left = style.left;\r\n rs = elem.runtimeStyle;\r\n rsLeft = rs && rs.left;\r\n if (rs) {\r\n rs.left = style.left;\r\n }\r\n // put in the new values to get a computed style out\r\n style.left = value;\r\n result = style.pixelLeft;\r\n style.left = left;\r\n if (rsLeft) {\r\n rs.left = rsLeft;\r\n }\r\n return result;\r\n };\r\n }\r\n\r\n function getMeasurements(elem, measure) {\r\n let base, borderA, borderB, computedMarginA, computedMarginB, computedStyle, dirA, dirB, marginA, marginB, paddingA, paddingB;\r\n\r\n if (isWindow(elem)) {\r\n base = document.documentElement[{height: 'clientHeight', width: 'clientWidth'}[measure]];\r\n\r\n return {\r\n base: base,\r\n padding: 0,\r\n border: 0,\r\n margin: 0\r\n };\r\n }\r\n\r\n // Start with offset property\r\n [\r\n base,\r\n dirA,\r\n dirB\r\n ] = {\r\n width: [\r\n elem.offsetWidth,\r\n 'Left',\r\n 'Right'\r\n ],\r\n height: [\r\n elem.offsetHeight,\r\n 'Top',\r\n 'Bottom'\r\n ]\r\n }[measure];\r\n\r\n computedStyle = getStyle(elem);\r\n paddingA = convertToPx(elem, computedStyle['padding' + dirA]) || 0;\r\n paddingB = convertToPx(elem, computedStyle['padding' + dirB]) || 0;\r\n borderA = convertToPx(elem, computedStyle['border' + dirA + 'Width']) || 0;\r\n borderB = convertToPx(elem, computedStyle['border' + dirB + 'Width']) || 0;\r\n computedMarginA = computedStyle['margin' + dirA];\r\n computedMarginB = computedStyle['margin' + dirB];\r\n\r\n // I do not care for width for now, so this hack is irrelevant\r\n // if ( !supportsPercentMargin )\r\n // computedMarginA = hackPercentMargin( elem, computedStyle, computedMarginA )\r\n // computedMarginB = hackPercentMargin( elem, computedStyle, computedMarginB )\r\n marginA = convertToPx(elem, computedMarginA) || 0;\r\n marginB = convertToPx(elem, computedMarginB) || 0;\r\n\r\n return {\r\n base: base,\r\n padding: paddingA + paddingB,\r\n border: borderA + borderB,\r\n margin: marginA + marginB\r\n };\r\n }\r\n\r\n function getWidthHeight(elem, direction, measure) {\r\n let computedStyle, result;\r\n\r\n let measurements = getMeasurements(elem, direction);\r\n\r\n if (measurements.base > 0) {\r\n return {\r\n base: measurements.base - measurements.padding - measurements.border,\r\n outer: measurements.base,\r\n outerfull: measurements.base + measurements.margin\r\n }[measure];\r\n }\r\n\r\n // Fall back to computed then uncomputed css if necessary\r\n computedStyle = getStyle(elem);\r\n result = computedStyle[direction];\r\n\r\n if (result < 0 || result === null) {\r\n result = elem.style[direction] || 0;\r\n }\r\n\r\n // Normalize \"\", auto, and prepare for extra\r\n result = parseFloat(result) || 0;\r\n\r\n return {\r\n base: result - measurements.padding - measurements.border,\r\n outer: result,\r\n outerfull: result + measurements.padding + measurements.border + measurements.margin\r\n }[measure];\r\n }\r\n\r\n // define missing methods\r\n return angular.forEach({\r\n before(newElem) {\r\n var children, elem, i, j, parent, ref, self;\r\n self = this;\r\n elem = self[0];\r\n parent = self.parent();\r\n children = parent.contents();\r\n if (children[0] === elem) {\r\n return parent.prepend(newElem);\r\n } else {\r\n for (i = j = 1, ref = children.length - 1; 1 <= ref ? j <= ref : j >= ref; i = 1 <= ref ? ++j : --j) {\r\n if (children[i] === elem) {\r\n angular.element(children[i - 1]).after(newElem);\r\n return;\r\n }\r\n }\r\n throw new Error('invalid DOM structure ' + elem.outerHTML);\r\n }\r\n },\r\n height (value){\r\n var self;\r\n self = this;\r\n if (typeof value !== 'undefined') {\r\n if (angular.isNumber(value)) {\r\n value = value + 'px';\r\n }\r\n return css.call(self, 'height', value);\r\n } else {\r\n return getWidthHeight(this[0], 'height', 'base');\r\n }\r\n },\r\n outerHeight(option) {\r\n return getWidthHeight(this[0], 'height', option ? 'outerfull' : 'outer');\r\n },\r\n outerWidth(option) {\r\n return getWidthHeight(this[0], 'width', option ? 'outerfull' : 'outer');\r\n },\r\n\r\n /*\r\n The offset setter method is not implemented\r\n */\r\n offset(value) {\r\n let docElem, win;\r\n let self = this;\r\n let box = {\r\n top: 0,\r\n left: 0\r\n };\r\n let elem = self[0];\r\n let doc = elem && elem.ownerDocument;\r\n\r\n if (arguments.length) {\r\n if (value === undefined) {\r\n return self;\r\n }\r\n // TODO: implement setter\r\n throw new Error('offset setter method is not implemented');\r\n }\r\n\r\n if (!doc) {\r\n return;\r\n }\r\n\r\n docElem = doc.documentElement;\r\n\r\n // TODO: Make sure it's not a disconnected DOM node\r\n\r\n if (elem.getBoundingClientRect != null) {\r\n box = elem.getBoundingClientRect();\r\n }\r\n\r\n win = doc.defaultView || doc.parentWindow;\r\n\r\n return {\r\n top: box.top + (win.pageYOffset || docElem.scrollTop) - (docElem.clientTop || 0),\r\n left: box.left + (win.pageXOffset || docElem.scrollLeft) - (docElem.clientLeft || 0)\r\n };\r\n },\r\n scrollTop(value) {\r\n return scrollTo(this, 'top', value);\r\n },\r\n scrollLeft(value) {\r\n return scrollTo(this, 'left', value);\r\n }\r\n }, (value, key) => {\r\n if (!element.prototype[key]) {\r\n return element.prototype[key] = value;\r\n }\r\n });\r\n }\r\n\r\n}\r\n","const hideClassToken = 'ng-ui-scroll-hide';\r\n\r\nexport default class ElementRoutines {\r\n\r\n static addCSSRules() {\r\n const selector = '.' + hideClassToken;\r\n const rules = 'display: none';\r\n const sheet = document.styleSheets[0];\r\n let index;\r\n try {\r\n index = sheet.cssRules.length;\r\n } catch (err) {\r\n index = 0;\r\n }\r\n if('insertRule' in sheet) {\r\n sheet.insertRule(selector + '{' + rules + '}', index);\r\n }\r\n else if('addRule' in sheet) {\r\n sheet.addRule(selector, rules, index);\r\n }\r\n }\r\n\r\n constructor($injector, $q) {\r\n this.$animate = ($injector.has && $injector.has('$animate')) ? $injector.get('$animate') : null;\r\n this.isAngularVersionLessThen1_3 = angular.version.major === 1 && angular.version.minor < 3;\r\n this.$q = $q;\r\n }\r\n\r\n hideElement(wrapper) {\r\n wrapper.element.addClass(hideClassToken);\r\n }\r\n\r\n showElement(wrapper) {\r\n wrapper.element.removeClass(hideClassToken);\r\n }\r\n\r\n insertElement(newElement, previousElement) {\r\n previousElement.after(newElement);\r\n return [];\r\n }\r\n\r\n removeElement(wrapper) {\r\n wrapper.element.remove();\r\n wrapper.scope.$destroy();\r\n return [];\r\n }\r\n\r\n insertElementAnimated(newElement, previousElement) {\r\n if (!this.$animate) {\r\n return this.insertElement(newElement, previousElement);\r\n }\r\n\r\n if (this.isAngularVersionLessThen1_3) {\r\n const deferred = this.$q.defer();\r\n // no need for parent - previous element is never null\r\n this.$animate.enter(newElement, null, previousElement, () => deferred.resolve());\r\n\r\n return [deferred.promise];\r\n }\r\n\r\n // no need for parent - previous element is never null\r\n return [this.$animate.enter(newElement, null, previousElement)];\r\n }\r\n\r\n removeElementAnimated(wrapper) {\r\n if (!this.$animate) {\r\n return this.removeElement(wrapper);\r\n }\r\n\r\n if (this.isAngularVersionLessThen1_3) {\r\n const deferred = this.$q.defer();\r\n this.$animate.leave(wrapper.element, () => {\r\n wrapper.scope.$destroy();\r\n return deferred.resolve();\r\n });\r\n\r\n return [deferred.promise];\r\n }\r\n\r\n return [(this.$animate.leave(wrapper.element)).then(() => wrapper.scope.$destroy())];\r\n }\r\n}","export default function ScrollBuffer(elementRoutines, bufferSize, startIndex) {\r\n const buffer = Object.create(Array.prototype);\r\n\r\n angular.extend(buffer, {\r\n size: bufferSize,\r\n\r\n reset(startIndex) {\r\n buffer.remove(0, buffer.length);\r\n buffer.eof = false;\r\n buffer.bof = false;\r\n buffer.first = startIndex;\r\n buffer.next = startIndex;\r\n buffer.minIndex = startIndex;\r\n buffer.maxIndex = startIndex;\r\n buffer.minIndexUser = null;\r\n buffer.maxIndexUser = null;\r\n },\r\n\r\n append(items) {\r\n items.forEach((item) => {\r\n ++buffer.next;\r\n buffer.insert('append', item);\r\n });\r\n buffer.maxIndex = buffer.eof ? buffer.next - 1 : Math.max(buffer.next - 1, buffer.maxIndex);\r\n },\r\n\r\n prepend(items) {\r\n items.reverse().forEach((item) => {\r\n --buffer.first;\r\n buffer.insert('prepend', item);\r\n });\r\n buffer.minIndex = buffer.bof ? buffer.minIndex = buffer.first : Math.min(buffer.first, buffer.minIndex);\r\n },\r\n\r\n /**\r\n * inserts wrapped element in the buffer\r\n * the first argument is either operation keyword (see below) or a number for operation 'insert'\r\n * for insert the number is the index for the buffer element the new one have to be inserted after\r\n * operations: 'append', 'prepend', 'insert', 'remove', 'update', 'none'\r\n */\r\n insert(operation, item, isTop) {\r\n const wrapper = {\r\n item: item\r\n };\r\n\r\n if (operation % 1 === 0) {// it is an insert\r\n wrapper.op = 'insert';\r\n buffer.splice(operation, 0, wrapper);\r\n if(isTop) {\r\n buffer.first--;\r\n }\r\n else {\r\n buffer.next++;\r\n }\r\n } else {\r\n wrapper.op = operation;\r\n switch (operation) {\r\n case 'append':\r\n buffer.push(wrapper);\r\n break;\r\n case 'prepend':\r\n buffer.unshift(wrapper);\r\n break;\r\n }\r\n }\r\n },\r\n\r\n // removes elements from buffer\r\n remove(arg1, arg2) {\r\n if (angular.isNumber(arg1)) {\r\n // removes items from arg1 (including) through arg2 (excluding)\r\n for (let i = arg1; i < arg2; i++) {\r\n elementRoutines.removeElement(buffer[i]);\r\n }\r\n return buffer.splice(arg1, arg2 - arg1);\r\n }\r\n // removes single item(wrapper) from the buffer\r\n buffer.splice(buffer.indexOf(arg1), 1);\r\n if(arg1._op === 'isTop' && buffer.first === this.getAbsMinIndex()) {\r\n this.incrementMinIndex();\r\n }\r\n else {\r\n this.decrementMaxIndex();\r\n }\r\n if(arg1._op === 'isTop') {\r\n buffer.first++;\r\n }\r\n else {\r\n buffer.next--;\r\n }\r\n if(!buffer.length) {\r\n buffer.first = 1;\r\n buffer.next = 1;\r\n }\r\n\r\n return elementRoutines.removeElementAnimated(arg1);\r\n },\r\n\r\n incrementMinIndex() {\r\n if(buffer.minIndexUser !== null) {\r\n if(buffer.minIndex > buffer.minIndexUser) {\r\n buffer.minIndexUser++;\r\n return;\r\n }\r\n if(buffer.minIndex === buffer.minIndexUser) {\r\n buffer.minIndexUser++;\r\n }\r\n }\r\n buffer.minIndex++;\r\n },\r\n\r\n decrementMaxIndex() {\r\n if(buffer.maxIndexUser !== null && buffer.maxIndex <= buffer.maxIndexUser) {\r\n buffer.maxIndexUser--;\r\n }\r\n buffer.maxIndex--;\r\n },\r\n\r\n getAbsMinIndex() {\r\n if(buffer.minIndexUser !== null) {\r\n return Math.min(buffer.minIndexUser, buffer.minIndex);\r\n }\r\n return buffer.minIndex;\r\n },\r\n\r\n getAbsMaxIndex() {\r\n if(buffer.maxIndexUser !== null) {\r\n return Math.max(buffer.maxIndexUser, buffer.maxIndex);\r\n }\r\n return buffer.maxIndex;\r\n },\r\n\r\n effectiveHeight(elements) {\r\n if (!elements.length) {\r\n return 0;\r\n }\r\n let top = Number.MAX_VALUE;\r\n let bottom = Number.NEGATIVE_INFINITY;\r\n elements.forEach((wrapper) => {\r\n if (wrapper.element[0].offsetParent) {\r\n // element style is not display:none\r\n top = Math.min(top, wrapper.element.offset().top);\r\n bottom = Math.max(bottom, wrapper.element.offset().top + wrapper.element.outerHeight(true));\r\n }\r\n });\r\n return Math.max(0, bottom - top);\r\n }\r\n\r\n });\r\n\r\n buffer.reset(startIndex);\r\n\r\n return buffer;\r\n}\r\n","// Can't just extend the Array, due to Babel does not support built-in classes extending\r\n// This solution was taken from https://stackoverflow.com/questions/46897414/es6-class-extends-array-workaround-for-es5-babel-transpile\r\nclass CacheProto {\r\n add(item) {\r\n for (let i = this.length - 1; i >= 0; i--) {\r\n if (this[i].index === item.scope.$index) {\r\n this[i].height = item.element.outerHeight();\r\n return;\r\n }\r\n }\r\n this.push({\r\n index: item.scope.$index,\r\n height: item.element.outerHeight()\r\n });\r\n this.sort((a, b) => ((a.index < b.index) ? -1 : ((a.index > b.index) ? 1 : 0)));\r\n }\r\n\r\n remove(argument, _isTop) {\r\n const index = argument % 1 === 0 ? argument : argument.scope.$index;\r\n const isTop = argument % 1 === 0 ? _isTop : argument._op === 'isTop';\r\n for (let i = this.length - 1; i >= 0; i--) {\r\n if (this[i].index === index) {\r\n this.splice(i, 1);\r\n break;\r\n }\r\n }\r\n if(!isTop) {\r\n for (let i = this.length - 1; i >= 0; i--) {\r\n if (this[i].index > index) {\r\n this[i].index--;\r\n }\r\n }\r\n }\r\n }\r\n\r\n clear() {\r\n this.length = 0;\r\n }\r\n}\r\n\r\nfunction Cache() {\r\n const instance = [];\r\n instance.push.apply(instance, arguments);\r\n Object.setPrototypeOf(instance, Cache.prototype);\r\n return instance;\r\n}\r\nCache.prototype = Object.create(Array.prototype);\r\nObject.getOwnPropertyNames(CacheProto.prototype).forEach(methodName =>\r\n Cache.prototype[methodName] = CacheProto.prototype[methodName]\r\n);\r\n\r\nfunction generateElement(template) {\r\n if(template.nodeType !== Node.ELEMENT_NODE) {\r\n throw new Error('ui-scroll directive requires an Element node for templating the view');\r\n }\r\n let element;\r\n switch (template.tagName.toLowerCase()) {\r\n case 'dl':\r\n throw new Error(`ui-scroll directive does not support <${template.tagName}> as a repeating tag: ${template.outerHTML}`);\r\n case 'tr':\r\n let table = angular.element('
    ');\r\n element = table.find('tr');\r\n break;\r\n case 'li':\r\n element = angular.element('
  • ');\r\n break;\r\n default:\r\n element = angular.element('
    ');\r\n }\r\n return element;\r\n}\r\n\r\nclass Padding {\r\n constructor(template) {\r\n this.element = generateElement(template);\r\n this.cache = new Cache();\r\n }\r\n\r\n height() {\r\n return this.element.height.apply(this.element, arguments);\r\n }\r\n}\r\n\r\nexport default Padding;","import Padding from './padding';\r\n\r\nexport default function Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding) {\r\n let topPadding = null;\r\n let bottomPadding = null;\r\n const viewport = viewportController && viewportController.viewport ? viewportController.viewport : angular.element(window);\r\n const container = viewportController && viewportController.container ? viewportController.container : undefined;\r\n const scope = viewportController && viewportController.scope ? viewportController.scope : $rootScope;\r\n\r\n viewport.css({\r\n 'overflow-anchor': 'none',\r\n 'overflow-y': 'auto',\r\n 'display': 'block'\r\n });\r\n\r\n function bufferPadding() {\r\n return viewport.outerHeight() * padding; // some extra space to initiate preload\r\n }\r\n\r\n angular.extend(viewport, {\r\n getScope() {\r\n return scope;\r\n },\r\n\r\n createPaddingElements(template) {\r\n topPadding = new Padding(template);\r\n bottomPadding = new Padding(template);\r\n element.before(topPadding.element);\r\n element.after(bottomPadding.element);\r\n topPadding.height(0);\r\n bottomPadding.height(0);\r\n },\r\n\r\n applyContainerStyle() {\r\n if (!container) {\r\n return true;\r\n }\r\n if(container !== viewport) {\r\n viewport.css('height', window.getComputedStyle(container[0]).height);\r\n }\r\n return viewport.height() > 0;\r\n },\r\n\r\n bottomDataPos() {\r\n let scrollHeight = viewport[0].scrollHeight;\r\n scrollHeight = scrollHeight != null ? scrollHeight : viewport[0].document.documentElement.scrollHeight;\r\n return scrollHeight - bottomPadding.height();\r\n },\r\n\r\n topDataPos() {\r\n return topPadding.height();\r\n },\r\n\r\n bottomVisiblePos() {\r\n return viewport.scrollTop() + viewport.outerHeight();\r\n },\r\n\r\n topVisiblePos() {\r\n return viewport.scrollTop();\r\n },\r\n\r\n insertElement(e, sibling) {\r\n return elementRoutines.insertElement(e, sibling || topPadding.element);\r\n },\r\n\r\n insertElementAnimated(e, sibling) {\r\n return elementRoutines.insertElementAnimated(e, sibling || topPadding.element);\r\n },\r\n\r\n shouldLoadBottom() {\r\n return !buffer.eof && viewport.bottomDataPos() < viewport.bottomVisiblePos() + bufferPadding();\r\n },\r\n\r\n clipBottom() {\r\n // clip the invisible items off the bottom\r\n let overage = 0;\r\n let overageHeight = 0;\r\n let itemHeight = 0;\r\n let emptySpaceHeight = viewport.bottomDataPos() - viewport.bottomVisiblePos() - bufferPadding();\r\n\r\n for (let i = buffer.length - 1; i >= 0; i--) {\r\n itemHeight = buffer[i].element.outerHeight(true);\r\n if (overageHeight + itemHeight > emptySpaceHeight) {\r\n break;\r\n }\r\n bottomPadding.cache.add(buffer[i]);\r\n overageHeight += itemHeight;\r\n overage++;\r\n }\r\n\r\n if (overage > 0) {\r\n buffer.eof = false;\r\n buffer.remove(buffer.length - overage, buffer.length);\r\n buffer.next -= overage;\r\n viewport.adjustPaddings();\r\n }\r\n },\r\n\r\n shouldLoadTop() {\r\n return !buffer.bof && (viewport.topDataPos() > viewport.topVisiblePos() - bufferPadding());\r\n },\r\n\r\n clipTop() {\r\n // clip the invisible items off the top\r\n let overage = 0;\r\n let overageHeight = 0;\r\n let itemHeight = 0;\r\n let emptySpaceHeight = viewport.topVisiblePos() - viewport.topDataPos() - bufferPadding();\r\n\r\n for (let i = 0; i < buffer.length; i++) {\r\n itemHeight = buffer[i].element.outerHeight(true);\r\n if (overageHeight + itemHeight > emptySpaceHeight) {\r\n break;\r\n }\r\n topPadding.cache.add(buffer[i]);\r\n overageHeight += itemHeight;\r\n overage++;\r\n }\r\n\r\n if (overage > 0) {\r\n // we need to adjust top padding element before items are removed from top\r\n // to avoid strange behaviour of scroll bar during remove top items when we are at the very bottom\r\n topPadding.height(topPadding.height() + overageHeight);\r\n buffer.bof = false;\r\n buffer.remove(0, overage);\r\n buffer.first += overage;\r\n }\r\n },\r\n\r\n adjustPaddings() {\r\n if (!buffer.length) {\r\n return;\r\n }\r\n\r\n // precise heights calculation based on items that are in buffer or that were in buffer once\r\n const visibleItemsHeight = buffer.reduce((summ, item) => summ + item.element.outerHeight(true), 0);\r\n\r\n let topPaddingHeight = 0, topCount = 0;\r\n topPadding.cache.forEach(item => {\r\n if(item.index < buffer.first) {\r\n topPaddingHeight += item.height;\r\n topCount++;\r\n }\r\n });\r\n\r\n let bottomPaddingHeight = 0, bottomCount = 0;\r\n bottomPadding.cache.forEach(item => {\r\n if(item.index >= buffer.next) {\r\n bottomPaddingHeight += item.height;\r\n bottomCount++;\r\n }\r\n });\r\n\r\n const totalHeight = visibleItemsHeight + topPaddingHeight + bottomPaddingHeight;\r\n const averageItemHeight = totalHeight / (topCount + bottomCount + buffer.length);\r\n\r\n // average heights calculation, items that have never been reached\r\n let adjustTopPadding = buffer.minIndexUser !== null && buffer.minIndex > buffer.minIndexUser;\r\n let adjustBottomPadding = buffer.maxIndexUser !== null && buffer.maxIndex < buffer.maxIndexUser;\r\n let topPaddingHeightAdd = adjustTopPadding ? (buffer.minIndex - buffer.minIndexUser) * averageItemHeight : 0;\r\n let bottomPaddingHeightAdd = adjustBottomPadding ? (buffer.maxIndexUser - buffer.maxIndex) * averageItemHeight : 0;\r\n\r\n // paddings combine adjustment\r\n topPadding.height(topPaddingHeight + topPaddingHeightAdd);\r\n bottomPadding.height(bottomPaddingHeight + bottomPaddingHeightAdd);\r\n },\r\n\r\n onAfterMinIndexSet(topPaddingHeightOld) {\r\n // additional scrollTop adjustment in case of datasource.minIndex external set\r\n if (buffer.minIndexUser !== null && buffer.minIndex > buffer.minIndexUser) {\r\n let diff = topPadding.height() - topPaddingHeightOld;\r\n viewport.scrollTop(viewport.scrollTop() + diff);\r\n while((diff -= viewport.scrollTop()) > 0) {\r\n bottomPadding.height(bottomPadding.height() + diff);\r\n viewport.scrollTop(viewport.scrollTop() + diff);\r\n }\r\n }\r\n },\r\n\r\n onAfterPrepend(updates) {\r\n if (!updates.prepended.length)\r\n return;\r\n const height = buffer.effectiveHeight(updates.prepended);\r\n const paddingHeight = topPadding.height() - height;\r\n if (paddingHeight >= 0) {\r\n topPadding.height(paddingHeight);\r\n }\r\n else {\r\n topPadding.height(0);\r\n viewport.scrollTop(viewport.scrollTop() - paddingHeight);\r\n }\r\n },\r\n\r\n resetTopPadding() {\r\n topPadding.height(0);\r\n topPadding.cache.clear();\r\n },\r\n\r\n resetBottomPadding() {\r\n bottomPadding.height(0);\r\n bottomPadding.cache.clear();\r\n },\r\n\r\n removeCacheItem(item, isTop) {\r\n topPadding.cache.remove(item, isTop);\r\n bottomPadding.cache.remove(item, isTop);\r\n },\r\n\r\n removeItem(item) {\r\n this.removeCacheItem(item);\r\n return buffer.remove(item);\r\n }\r\n });\r\n\r\n return viewport;\r\n}\r\n","class Adapter {\r\n\r\n constructor($scope, $parse, $attr, viewport, buffer, doAdjust, reload) {\r\n this.$parse = $parse;\r\n this.$attr = $attr;\r\n this.viewport = viewport;\r\n this.buffer = buffer;\r\n\r\n this.doAdjust = doAdjust;\r\n this.reload = reload;\r\n\r\n this.isLoading = false;\r\n this.disabled = false;\r\n\r\n const viewportScope = viewport.getScope();\r\n this.startScope = viewportScope.$parent ? viewportScope : $scope;\r\n\r\n this.publicContext = {};\r\n this.assignAdapter($attr.adapter);\r\n this.generatePublicContext();\r\n }\r\n\r\n assignAdapter(adapterAttr) {\r\n if (!adapterAttr || !(adapterAttr = adapterAttr.replace(/^\\s+|\\s+$/gm, ''))) {\r\n return;\r\n }\r\n let adapterOnScope;\r\n\r\n try {\r\n this.$parse(adapterAttr).assign(this.startScope, {});\r\n adapterOnScope = this.$parse(adapterAttr)(this.startScope);\r\n }\r\n catch (error) {\r\n error.message = `Angular ui-scroll Adapter assignment exception.\\n` +\r\n `Can't parse \"${adapterAttr}\" expression.\\n` +\r\n error.message;\r\n throw error;\r\n }\r\n\r\n angular.extend(adapterOnScope, this.publicContext);\r\n this.publicContext = adapterOnScope;\r\n }\r\n\r\n generatePublicContext() {\r\n // these methods will be accessible out of ui-scroll via user defined adapter\r\n const publicMethods = ['reload', 'applyUpdates', 'append', 'prepend', 'isBOF', 'isEOF', 'isEmpty'];\r\n for (let i = publicMethods.length - 1; i >= 0; i--) {\r\n this.publicContext[publicMethods[i]] = this[publicMethods[i]].bind(this);\r\n }\r\n\r\n // these read-only props will be accessible out of ui-scroll via user defined adapter\r\n const publicProps = ['isLoading', 'topVisible', 'topVisibleElement', 'topVisibleScope', 'bottomVisible', 'bottomVisibleElement', 'bottomVisibleScope'];\r\n for (let i = publicProps.length - 1; i >= 0; i--) {\r\n let property, attr = this.$attr[publicProps[i]];\r\n Object.defineProperty(this, publicProps[i], {\r\n get: () => property,\r\n set: (value) => {\r\n property = value;\r\n this.publicContext[publicProps[i]] = value;\r\n if (attr) {\r\n this.$parse(attr).assign(this.startScope, value);\r\n }\r\n }\r\n });\r\n }\r\n\r\n // non-read-only public property\r\n Object.defineProperty(this.publicContext, 'disabled', {\r\n get: () => this.disabled,\r\n set: (value) => (!(this.disabled = value)) ? this.doAdjust() : null\r\n });\r\n }\r\n\r\n loading(value) {\r\n this.isLoading = value;\r\n }\r\n\r\n isBOF() {\r\n return this.buffer.bof;\r\n }\r\n\r\n isEOF() {\r\n return this.buffer.eof;\r\n }\r\n\r\n isEmpty() {\r\n return !this.buffer.length;\r\n }\r\n\r\n append(newItems) {\r\n this.buffer.append(newItems);\r\n this.doAdjust();\r\n this.viewport.clipTop();\r\n this.viewport.clipBottom();\r\n }\r\n\r\n prepend(newItems) {\r\n this.buffer.prepend(newItems);\r\n this.doAdjust();\r\n this.viewport.clipTop();\r\n this.viewport.clipBottom();\r\n }\r\n\r\n applyUpdates(arg1, arg2) {\r\n if (typeof arg1 === 'function') {\r\n this.applyUpdatesFunc(arg1);\r\n } else {\r\n this.applyUpdatesIndex(arg1, arg2);\r\n }\r\n this.doAdjust();\r\n }\r\n\r\n applyUpdatesFunc(cb) {\r\n this.buffer.slice(0).forEach((wrapper) => {\r\n // we need to do it on the buffer clone, because buffer content\r\n // may change as we iterate through\r\n this.applyUpdate(wrapper, cb(wrapper.item, wrapper.scope, wrapper.element));\r\n });\r\n }\r\n\r\n applyUpdatesIndex(index, newItems) {\r\n if (index % 1 !== 0) {\r\n throw new Error('applyUpdates - ' + index + ' is not a valid index (should be an integer)');\r\n }\r\n const _index = index - this.buffer.first;\r\n\r\n // apply updates only within buffer\r\n if (_index >= 0 && _index < this.buffer.length) {\r\n this.applyUpdate(this.buffer[_index], newItems);\r\n }\r\n // out-of-buffer case: deletion may affect Paddings\r\n else if(index >= this.buffer.getAbsMinIndex() && index <= this.buffer.getAbsMaxIndex()) {\r\n if(angular.isArray(newItems) && !newItems.length) {\r\n this.viewport.removeCacheItem(index, index === this.buffer.minIndex);\r\n if(index === this.buffer.getAbsMinIndex()) {\r\n this.buffer.incrementMinIndex();\r\n }\r\n else {\r\n this.buffer.decrementMaxIndex();\r\n }\r\n }\r\n }\r\n }\r\n\r\n applyUpdate(wrapper, newItems) {\r\n if (!angular.isArray(newItems)) {\r\n return;\r\n }\r\n let position = this.buffer.indexOf(wrapper);\r\n if (!newItems.reverse().some(newItem => newItem === wrapper.item)) {\r\n wrapper.op = 'remove';\r\n if(position === 0 && !newItems.length) {\r\n wrapper._op = 'isTop'; // to catch \"first\" edge case on remove\r\n }\r\n }\r\n newItems.forEach((newItem) => {\r\n if (newItem === wrapper.item) {\r\n position--;\r\n } else {\r\n // 3 parameter (isTop) is to catch \"first\" edge case on insert\r\n this.buffer.insert(position + 1, newItem, position === -1);\r\n }\r\n });\r\n }\r\n\r\n calculateProperties() {\r\n let rowTop = null, topHeight = 0;\r\n let topDone = false, bottomDone = false;\r\n const length = this.buffer.length;\r\n\r\n for (let i = 0; i < length; i++) {\r\n const item = this.buffer[i];\r\n const itemTop = item.element.offset().top;\r\n\r\n if (rowTop !== itemTop) { // a new row condition\r\n const itemHeight = item.element.outerHeight(true);\r\n const top = this.viewport.topDataPos() + topHeight + itemHeight;\r\n\r\n if (!topDone && top > this.viewport.topVisiblePos()) {\r\n topDone = true;\r\n this['topVisible'] = item.item;\r\n this['topVisibleElement'] = item.element;\r\n this['topVisibleScope'] = item.scope;\r\n }\r\n if (!bottomDone && (top >= this.viewport.bottomVisiblePos() || (i === length - 1 && this.isEOF()))) {\r\n bottomDone = true;\r\n this['bottomVisible'] = item.item;\r\n this['bottomVisibleElement'] = item.element;\r\n this['bottomVisibleScope'] = item.scope;\r\n }\r\n topHeight += itemHeight;\r\n }\r\n rowTop = itemTop;\r\n\r\n if (topDone && bottomDone) {\r\n break;\r\n }\r\n }\r\n }\r\n\r\n}\r\n\r\nexport default Adapter;\r\n","import JQLiteExtras from './modules/jqLiteExtras';\nimport ElementRoutines from './modules/elementRoutines.js';\nimport ScrollBuffer from './modules/buffer.js';\nimport Viewport from './modules/viewport.js';\nimport Adapter from './modules/adapter.js';\n\nangular.module('ui.scroll', [])\n\n .constant('JQLiteExtras', JQLiteExtras)\n .run(['JQLiteExtras', (JQLiteExtras) => {\n const elt = angular.element;\n !(window.jQuery && elt.fn && elt.fn.jquery) ? (new JQLiteExtras()).registerFor(elt) : null;\n ElementRoutines.addCSSRules();\n }])\n\n .directive('uiScrollViewport', function () {\n return {\n restrict: 'A',\n controller: [\n '$scope',\n '$element',\n function (scope, element) {\n this.container = element;\n this.viewport = element;\n this.scope = scope;\n\n angular.forEach(element.children(), child => {\n if (child.tagName.toLowerCase() === 'tbody') {\n this.viewport = angular.element(child);\n }\n });\n\n return this;\n }\n ]\n };\n })\n\n .directive('uiScroll', [\n '$log',\n '$injector',\n '$rootScope',\n '$timeout',\n '$interval',\n '$q',\n '$parse',\n function (console, $injector, $rootScope, $timeout, $interval, $q, $parse) {\n\n return {\n require: ['?^uiScrollViewport'],\n restrict: 'A',\n transclude: 'element',\n priority: 1000,\n terminal: true,\n link: link\n };\n\n function link($scope, element, $attr, controllers, linker) {\n const match = $attr.uiScroll.match(/^\\s*(\\w+)\\s+in\\s+([(\\w|\\$)\\.]+)\\s*$/);\n if (!match) {\n throw new Error('Expected uiScroll in form of \\'_item_ in _datasource_\\' but got \\'' + $attr.uiScroll + '\\'');\n }\n\n function parseNumber(value, defaultValue, isFloat) {\n if (!isFloat) {\n value = value === null ? defaultValue : Math.floor(value);\n }\n return isNaN(value) ? defaultValue : value;\n }\n\n function parseNumericAttr(value, defaultValue, isFloat) {\n const result = $parse(value)($scope);\n return parseNumber(result, defaultValue, isFloat);\n }\n\n const BUFFER_MIN = 3;\n const BUFFER_DEFAULT = 10;\n const PADDING_MIN = 0.3;\n const PADDING_DEFAULT = 0.5;\n const START_INDEX_DEFAULT = 1;\n const MAX_VIEWPORT_DELAY = 500;\n const VIEWPORT_POLLING_INTERVAL = 50;\n\n let datasource = null;\n const itemName = match[1];\n const datasourceName = match[2];\n const viewportController = controllers[0];\n const bufferSize = Math.max(BUFFER_MIN, parseNumericAttr($attr.bufferSize, BUFFER_DEFAULT));\n const padding = Math.max(PADDING_MIN, parseNumericAttr($attr.padding, PADDING_DEFAULT, true));\n let startIndex = parseNumericAttr($attr.startIndex, START_INDEX_DEFAULT);\n let ridActual = 0; // current data revision id\n let pending = [];\n\n const elementRoutines = new ElementRoutines($injector, $q);\n const buffer = new ScrollBuffer(elementRoutines, bufferSize, startIndex);\n const viewport = new Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding);\n const adapter = new Adapter($scope, $parse, $attr, viewport, buffer, doAdjust, reload);\n\n if (viewportController) {\n viewportController.adapter = adapter;\n }\n\n const isDatasourceValid = () =>\n Object.prototype.toString.call(datasource) === '[object Object]' && typeof datasource.get === 'function';\n\n datasource = $parse(datasourceName)($scope); // try to get datasource on scope\n if (!isDatasourceValid()) {\n datasource = $injector.get(datasourceName); // try to inject datasource as service\n if (!isDatasourceValid()) {\n throw new Error(datasourceName + ' is not a valid datasource');\n }\n }\n\n let onRenderHandlers = [];\n function onRenderHandlersRunner() {\n onRenderHandlers.forEach(handler => handler.run());\n onRenderHandlers = [];\n }\n function persistDatasourceIndex(datasource, propName) {\n let getter;\n // need to postpone min/maxIndexUser processing if the view is empty\n if(angular.isNumber(datasource[propName])) {\n getter = datasource[propName];\n if(angular.isNumber(getter)) {\n onRenderHandlers = onRenderHandlers.filter(handler => handler.id !== propName);\n onRenderHandlers.push({\n id: propName,\n run: () => datasource[propName] = getter\n });\n }\n }\n }\n\n function defineDatasourceIndex(datasource, propName, propUserName) {\n const descriptor = Object.getOwnPropertyDescriptor(datasource, propName);\n if (descriptor && (descriptor.set || descriptor.get)) {\n return;\n }\n let getter;\n persistDatasourceIndex(datasource, propName);\n Object.defineProperty(datasource, propName, {\n set: (value) => {\n getter = value;\n if(pending.length && !buffer.length) {\n persistDatasourceIndex(datasource, propName);\n return;\n }\n buffer[propUserName] = value;\n const topPaddingHeightOld = viewport.topDataPos();\n viewport.adjustPaddings();\n if (propName === 'minIndex') {\n viewport.onAfterMinIndexSet(topPaddingHeightOld);\n }\n },\n get: () => getter\n });\n }\n\n defineDatasourceIndex(datasource, 'minIndex', 'minIndexUser');\n defineDatasourceIndex(datasource, 'maxIndex', 'maxIndexUser');\n\n const fetchNext = (datasource.get.length !== 2) ?\n (success) => datasource.get(buffer.next, bufferSize, success) :\n (success) => {\n datasource.get({\n index: buffer.next,\n append: buffer.length ? buffer[buffer.length - 1].item : void 0,\n count: bufferSize\n }, success);\n };\n\n const fetchPrevious = (datasource.get.length !== 2) ?\n (success) => datasource.get(buffer.first - bufferSize, bufferSize, success) :\n (success) => {\n datasource.get({\n index: buffer.first - bufferSize,\n prepend: buffer.length ? buffer[0].item : void 0,\n count: bufferSize\n }, success);\n };\n\n const initialize = () => {\n let tryCount = 0;\n if(!viewport.applyContainerStyle()) {\n const timer = $interval(() => {\n tryCount++;\n if(viewport.applyContainerStyle()) {\n $interval.cancel(timer);\n doAdjust();\n }\n if(tryCount * VIEWPORT_POLLING_INTERVAL >= MAX_VIEWPORT_DELAY) {\n $interval.cancel(timer);\n throw Error(`ui-scroll directive requires a viewport with non-zero height in ${MAX_VIEWPORT_DELAY}ms`);\n }\n }, VIEWPORT_POLLING_INTERVAL);\n }\n else {\n doAdjust();\n }\n };\n\n /**\n * Build padding elements\n *\n * Calling linker is the only way I found to get access to the tag name of the template\n * to prevent the directive scope from pollution a new scope is created and destroyed\n * right after the builder creation is completed\n */\n linker((clone, scope) => {\n viewport.createPaddingElements(clone[0]);\n // we do not include the clone in the DOM. It means that the nested directives will not\n // be able to reach the parent directives, but in this case it is intentional because we\n // created the clone to access the template tag name\n scope.$destroy();\n clone.remove();\n });\n\n $scope.$on('$destroy', () => {\n unbindEvents();\n viewport.unbind('mousewheel', wheelHandler);\n });\n\n viewport.bind('mousewheel', wheelHandler);\n\n initialize();\n\n /* Private function definitions */\n\n function isInvalid(rid) {\n return (rid && rid !== ridActual) || $scope.$$destroyed;\n }\n\n function bindEvents() {\n viewport.bind('resize', resizeAndScrollHandler);\n viewport.bind('scroll', resizeAndScrollHandler);\n }\n\n function unbindEvents() {\n viewport.unbind('resize', resizeAndScrollHandler);\n viewport.unbind('scroll', resizeAndScrollHandler);\n }\n\n function reload() {\n viewport.resetTopPadding();\n viewport.resetBottomPadding();\n if (arguments.length) {\n startIndex = parseNumber(arguments[0], START_INDEX_DEFAULT, false);\n }\n buffer.reset(startIndex);\n persistDatasourceIndex(datasource, 'minIndex');\n persistDatasourceIndex(datasource, 'maxIndex');\n doAdjust();\n }\n\n function isElementVisible(wrapper) {\n return wrapper.element.height() && wrapper.element[0].offsetParent;\n }\n\n function visibilityWatcher(wrapper) {\n if (isElementVisible(wrapper)) {\n buffer.forEach((item) => {\n if (typeof item.unregisterVisibilityWatcher === 'function') {\n item.unregisterVisibilityWatcher();\n delete item.unregisterVisibilityWatcher;\n }\n });\n if (!pending.length) {\n $timeout(() => doAdjust());\n }\n }\n }\n\n function insertWrapperContent(wrapper, insertAfter) {\n createElement(wrapper, insertAfter, viewport.insertElement);\n if (!isElementVisible(wrapper)) {\n wrapper.unregisterVisibilityWatcher = wrapper.scope.$watch(() => visibilityWatcher(wrapper));\n }\n elementRoutines.hideElement(wrapper); // hide inserted elements before data binding\n }\n\n function createElement(wrapper, insertAfter, insertElement) {\n let promises = null;\n const sibling = (insertAfter > 0) ? buffer[insertAfter - 1].element : undefined;\n linker((clone, scope) => {\n promises = insertElement(clone, sibling);\n wrapper.element = clone;\n wrapper.scope = scope;\n scope[itemName] = wrapper.item;\n });\n // ui-scroll-grid apply\n if (adapter.transform) {\n const tdInitializer = wrapper.scope.uiScrollTdInitializer;\n if (tdInitializer && tdInitializer.linking) {\n adapter.transform(wrapper.scope, wrapper.element);\n } else {\n wrapper.scope.uiScrollTdInitializer = {\n onLink: () => adapter.transform(wrapper.scope, wrapper.element),\n scope: wrapper.scope\n };\n }\n }\n return promises;\n }\n\n function updateDOM() {\n let promises = [];\n const toBePrepended = [];\n const toBeRemoved = [];\n const inserted = [];\n\n buffer.forEach((wrapper, i) => {\n switch (wrapper.op) {\n case 'prepend':\n toBePrepended.unshift(wrapper);\n break;\n case 'append':\n insertWrapperContent(wrapper, i);\n wrapper.op = 'none';\n inserted.push(wrapper);\n break;\n case 'insert':\n promises = promises.concat(createElement(wrapper, i, viewport.insertElementAnimated));\n wrapper.op = 'none';\n inserted.push(wrapper);\n break;\n case 'remove':\n toBeRemoved.push(wrapper);\n }\n });\n\n toBeRemoved.forEach((wrapper) => promises = promises.concat(viewport.removeItem(wrapper)));\n\n if (toBePrepended.length)\n toBePrepended.forEach((wrapper) => {\n insertWrapperContent(wrapper);\n wrapper.op = 'none';\n });\n\n buffer.forEach((item, i) => item.scope.$index = buffer.first + i);\n\n return {\n prepended: toBePrepended,\n removed: toBeRemoved,\n inserted: inserted,\n animated: promises\n };\n\n }\n\n function updatePaddings(rid, updates) {\n // schedule another doAdjust after animation completion\n if (updates.animated.length) {\n $q.all(updates.animated).then(() => {\n viewport.adjustPaddings();\n doAdjust(rid);\n });\n } else {\n viewport.adjustPaddings();\n }\n }\n\n function enqueueFetch(rid, updates) {\n if (viewport.shouldLoadBottom()) {\n if (!updates || buffer.effectiveHeight(updates.inserted) > 0) {\n // this means that at least one item appended in the last batch has height > 0\n if (pending.push(true) === 1) {\n adapter.loading(true);\n fetch(rid);\n }\n }\n } else if (viewport.shouldLoadTop()) {\n if ((!updates || buffer.effectiveHeight(updates.prepended) > 0) || pending[0]) {\n // this means that at least one item appended in the last batch has height > 0\n // pending[0] = true means that previous fetch was appending. We need to force at least one prepend\n // BTW there will always be at least 1 element in the pending array because bottom is fetched first\n if (pending.push(false) === 1) {\n adapter.loading(true);\n fetch(rid);\n }\n }\n }\n }\n\n function processUpdates() {\n const updates = updateDOM();\n\n // We need the item bindings to be processed before we can do adjustments\n !$scope.$$phase && !$rootScope.$$phase && $scope.$digest();\n\n updates.inserted.forEach(w => elementRoutines.showElement(w));\n updates.prepended.forEach(w => elementRoutines.showElement(w));\n return updates;\n }\n\n function doAdjust(rid) {\n if (!rid) { // dismiss pending requests\n pending = [];\n rid = ++ridActual;\n }\n\n const updates = processUpdates();\n\n if (isInvalid(rid)) {\n return;\n }\n\n updatePaddings(rid, updates);\n enqueueFetch(rid);\n\n if (!pending.length) {\n adapter.calculateProperties();\n }\n }\n\n function doAdjustAfterFetch(rid) {\n const updates = processUpdates();\n\n viewport.onAfterPrepend(updates);\n\n if (isInvalid(rid)) {\n return;\n }\n\n updatePaddings(rid, updates);\n onRenderHandlersRunner();\n enqueueFetch(rid, updates);\n pending.shift();\n\n if (pending.length)\n fetch(rid);\n else {\n adapter.loading(false);\n bindEvents();\n adapter.calculateProperties();\n }\n }\n\n function fetch(rid) {\n if (pending[0]) {// scrolling down\n if (buffer.length && !viewport.shouldLoadBottom()) {\n doAdjustAfterFetch(rid);\n } else {\n fetchNext((result) => {\n if (isInvalid(rid)) {\n return;\n }\n\n if (result.length < bufferSize) {\n buffer.eof = true;\n }\n\n if (result.length > 0) {\n viewport.clipTop();\n buffer.append(result);\n }\n\n doAdjustAfterFetch(rid);\n });\n }\n } else { // scrolling up\n if (buffer.length && !viewport.shouldLoadTop()) {\n doAdjustAfterFetch(rid);\n } else {\n fetchPrevious((result) => {\n if (isInvalid(rid)) {\n return;\n }\n\n if (result.length < bufferSize) {\n buffer.bof = true;\n // log 'bof is reached'\n }\n\n if (result.length > 0) {\n if (buffer.length) {\n viewport.clipBottom();\n }\n buffer.prepend(result);\n }\n\n doAdjustAfterFetch(rid);\n });\n }\n }\n }\n\n function resizeAndScrollHandler() {\n if (!$rootScope.$$phase && !adapter.isLoading && !adapter.disabled) {\n\n enqueueFetch(ridActual);\n\n if (pending.length) {\n unbindEvents();\n } else {\n adapter.calculateProperties();\n !$scope.$$phase && $scope.$digest();\n }\n }\n }\n\n function wheelHandler(event) {\n if (!adapter.disabled) {\n const scrollTop = viewport[0].scrollTop;\n const yMax = viewport[0].scrollHeight - viewport[0].clientHeight;\n\n if ((scrollTop === 0 && !buffer.bof) || (scrollTop === yMax && !buffer.eof)) {\n event.preventDefault();\n }\n }\n }\n }\n\n }\n ]);\n"],"sourceRoot":""} \ No newline at end of file From b1be9400ee2afb823356fc508b7ca86964d13cde Mon Sep 17 00:00:00 2001 From: Philippe Riand Date: Thu, 20 Jun 2019 22:59:16 -0400 Subject: [PATCH 10/18] Fix the outerHeight calculation in buffer when rowHeight is provided --- dist/ui-scroll-grid.js | 2 +- dist/ui-scroll.js | 11 ++++++----- dist/ui-scroll.js.map | 2 +- dist/ui-scroll.min.js | 2 +- dist/ui-scroll.min.js.map | 2 +- src/modules/buffer.js | 4 ++-- src/ui-scroll.js | 2 +- 7 files changed, 13 insertions(+), 12 deletions(-) diff --git a/dist/ui-scroll-grid.js b/dist/ui-scroll-grid.js index 68604208..23cc897d 100644 --- a/dist/ui-scroll-grid.js +++ b/dist/ui-scroll-grid.js @@ -1,7 +1,7 @@ /*! * angular-ui-scroll * https://github.com/angular-ui/ui-scroll - * Version: 1.7.3 -- 2019-06-06T21:24:29.934Z + * Version: 1.7.3 -- 2019-06-21T02:53:37.275Z * License: MIT */ /******/ (function(modules) { // webpackBootstrap diff --git a/dist/ui-scroll.js b/dist/ui-scroll.js index 6ec58608..1e999969 100644 --- a/dist/ui-scroll.js +++ b/dist/ui-scroll.js @@ -1,7 +1,7 @@ /*! * angular-ui-scroll * https://github.com/angular-ui/ui-scroll - * Version: 1.7.3 -- 2019-06-06T21:24:29.934Z + * Version: 1.7.3 -- 2019-06-21T02:53:37.275Z * License: MIT */ /******/ (function(modules) { // webpackBootstrap @@ -509,7 +509,7 @@ function () { // CONCATENATED MODULE: ./src/modules/buffer.js -function ScrollBuffer(elementRoutines, bufferSize, startIndex) { +function ScrollBuffer(elementRoutines, bufferSize, startIndex, rowHeight) { var buffer = Object.create(Array.prototype); angular.extend(buffer, { size: bufferSize, @@ -653,7 +653,7 @@ function ScrollBuffer(elementRoutines, bufferSize, startIndex) { if (wrapper.element[0].offsetParent) { // element style is not display:none top = Math.min(top, wrapper.element.offset().top); - bottom = Math.max(bottom, wrapper.element.offset().top + wrapper.element.outerHeight(true)); + bottom = Math.max(bottom, wrapper.element.offset().top + (rowHeight ? rowHeight : wrapper.element.outerHeight(true))); } }); return Math.max(0, bottom - top); @@ -1261,7 +1261,8 @@ function () { angular.module('ui.scroll', []).constant('JQLiteExtras', jqLiteExtras_JQLiteExtras).run(['JQLiteExtras', function (JQLiteExtras) { - !window.jQuery ? new JQLiteExtras().registerFor(angular.element) : null; + !(angular.element.fn && angular.element.fn.jquery) ? new JQLiteExtras().registerFor(angular.element) : null; //!window.jQuery ? (new JQLiteExtras()).registerFor(angular.element) : null; + ElementRoutines.addCSSRules(); }]).directive('uiScrollViewport', function () { return { @@ -1345,7 +1346,7 @@ angular.module('ui.scroll', []).constant('JQLiteExtras', jqLiteExtras_JQLiteExtr var pending = []; var elementRoutines = new ElementRoutines($injector, $q); - var buffer = new ScrollBuffer(elementRoutines, bufferSize, startIndex); + var buffer = new ScrollBuffer(elementRoutines, bufferSize, startIndex, rowHeight); var viewport = new Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding, rowHeight); var adapter = new modules_adapter($scope, $parse, $attr, viewport, buffer, doAdjust, reload); diff --git a/dist/ui-scroll.js.map b/dist/ui-scroll.js.map index b8d0b815..1ed8f304 100644 --- a/dist/ui-scroll.js.map +++ b/dist/ui-scroll.js.map @@ -1 +1 @@ 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missing methods\r\n return angular.forEach({\r\n before(newElem) {\r\n var children, elem, i, j, parent, ref, self;\r\n self = this;\r\n elem = self[0];\r\n parent = self.parent();\r\n children = parent.contents();\r\n if (children[0] === elem) {\r\n return parent.prepend(newElem);\r\n } else {\r\n for (i = j = 1, ref = children.length - 1; 1 <= ref ? j <= ref : j >= ref; i = 1 <= ref ? ++j : --j) {\r\n if (children[i] === elem) {\r\n angular.element(children[i - 1]).after(newElem);\r\n return;\r\n }\r\n }\r\n throw new Error('invalid DOM structure ' + elem.outerHTML);\r\n }\r\n },\r\n height (value){\r\n var self;\r\n self = this;\r\n if (typeof value !== 'undefined') {\r\n if (angular.isNumber(value)) {\r\n value = value + 'px';\r\n }\r\n return css.call(self, 'height', value);\r\n } else {\r\n return getWidthHeight(this[0], 'height', 'base');\r\n }\r\n },\r\n outerHeight(option) {\r\n return getWidthHeight(this[0], 'height', option ? 'outerfull' : 'outer');\r\n },\r\n outerWidth(option) {\r\n return getWidthHeight(this[0], 'width', option ? 'outerfull' : 'outer');\r\n },\r\n\r\n /*\r\n The offset setter method is not implemented\r\n */\r\n offset(value) {\r\n let docElem, win;\r\n let self = this;\r\n let box = {\r\n top: 0,\r\n left: 0\r\n };\r\n let elem = self[0];\r\n let doc = elem && elem.ownerDocument;\r\n\r\n if (arguments.length) {\r\n if (value === undefined) {\r\n return self;\r\n }\r\n // TODO: implement setter\r\n throw new Error('offset setter method is not implemented');\r\n }\r\n\r\n if (!doc) {\r\n return;\r\n }\r\n\r\n docElem = doc.documentElement;\r\n\r\n // TODO: Make sure it's not a disconnected DOM node\r\n\r\n if (elem.getBoundingClientRect != null) {\r\n box = elem.getBoundingClientRect();\r\n }\r\n\r\n win = doc.defaultView || doc.parentWindow;\r\n\r\n return {\r\n top: box.top + (win.pageYOffset || docElem.scrollTop) - (docElem.clientTop || 0),\r\n left: box.left + (win.pageXOffset || docElem.scrollLeft) - (docElem.clientLeft || 0)\r\n };\r\n },\r\n scrollTop(value) {\r\n return scrollTo(this, 'top', value);\r\n },\r\n scrollLeft(value) {\r\n return scrollTo(this, 'left', value);\r\n }\r\n }, (value, key) => {\r\n if (!element.prototype[key]) {\r\n return element.prototype[key] = value;\r\n }\r\n });\r\n }\r\n\r\n}\r\n","const hideClassToken = 'ng-ui-scroll-hide';\r\n\r\nexport default class ElementRoutines {\r\n\r\n static addCSSRules() {\r\n const selector = '.' + hideClassToken;\r\n const rules = 'display: none';\r\n const sheet = document.styleSheets[0];\r\n let index;\r\n try {\r\n index = sheet.cssRules.length;\r\n } catch (err) {\r\n index = 0;\r\n }\r\n if('insertRule' in sheet) {\r\n sheet.insertRule(selector + '{' + rules + '}', index);\r\n }\r\n else if('addRule' in sheet) {\r\n sheet.addRule(selector, rules, index);\r\n }\r\n }\r\n\r\n constructor($injector, $q) {\r\n this.$animate = ($injector.has && $injector.has('$animate')) ? $injector.get('$animate') : null;\r\n this.isAngularVersionLessThen1_3 = angular.version.major === 1 && angular.version.minor < 3;\r\n this.$q = $q;\r\n }\r\n\r\n hideElement(wrapper) {\r\n wrapper.element.addClass(hideClassToken);\r\n }\r\n\r\n showElement(wrapper) {\r\n wrapper.element.removeClass(hideClassToken);\r\n }\r\n\r\n insertElement(newElement, previousElement) {\r\n previousElement.after(newElement);\r\n return [];\r\n }\r\n\r\n removeElement(wrapper) {\r\n wrapper.element.remove();\r\n wrapper.scope.$destroy();\r\n return [];\r\n }\r\n\r\n insertElementAnimated(newElement, previousElement) {\r\n if (!this.$animate) {\r\n return this.insertElement(newElement, previousElement);\r\n }\r\n\r\n if (this.isAngularVersionLessThen1_3) {\r\n const deferred = this.$q.defer();\r\n // no need for parent - previous element is never null\r\n this.$animate.enter(newElement, null, previousElement, () => deferred.resolve());\r\n\r\n return [deferred.promise];\r\n }\r\n\r\n // no need for parent - previous element is never null\r\n return [this.$animate.enter(newElement, null, previousElement)];\r\n }\r\n\r\n removeElementAnimated(wrapper) {\r\n if (!this.$animate) {\r\n return this.removeElement(wrapper);\r\n }\r\n\r\n if (this.isAngularVersionLessThen1_3) {\r\n const deferred = this.$q.defer();\r\n this.$animate.leave(wrapper.element, () => {\r\n wrapper.scope.$destroy();\r\n return deferred.resolve();\r\n });\r\n\r\n return [deferred.promise];\r\n }\r\n\r\n return [(this.$animate.leave(wrapper.element)).then(() => wrapper.scope.$destroy())];\r\n }\r\n}","export default function ScrollBuffer(elementRoutines, bufferSize, startIndex) {\r\n const buffer = Object.create(Array.prototype);\r\n\r\n angular.extend(buffer, {\r\n size: bufferSize,\r\n\r\n reset(startIndex) {\r\n buffer.remove(0, buffer.length);\r\n buffer.eof = false;\r\n buffer.bof = false;\r\n buffer.first = startIndex;\r\n buffer.next = startIndex;\r\n buffer.minIndex = startIndex;\r\n buffer.maxIndex = startIndex;\r\n buffer.minIndexUser = null;\r\n buffer.maxIndexUser = null;\r\n },\r\n\r\n append(items) {\r\n items.forEach((item) => {\r\n ++buffer.next;\r\n buffer.insert('append', item);\r\n });\r\n buffer.maxIndex = buffer.eof ? buffer.next - 1 : Math.max(buffer.next - 1, buffer.maxIndex);\r\n },\r\n\r\n prepend(items) {\r\n items.reverse().forEach((item) => {\r\n --buffer.first;\r\n buffer.insert('prepend', item);\r\n });\r\n buffer.minIndex = buffer.bof ? buffer.minIndex = buffer.first : Math.min(buffer.first, buffer.minIndex);\r\n },\r\n\r\n /**\r\n * inserts wrapped element in the buffer\r\n * the first argument is either operation keyword (see below) or a number for operation 'insert'\r\n * for insert the number is the index for the buffer element the new one have to be inserted after\r\n * operations: 'append', 'prepend', 'insert', 'remove', 'update', 'none'\r\n */\r\n insert(operation, item, isTop) {\r\n const wrapper = {\r\n item: item\r\n };\r\n\r\n if (operation % 1 === 0) {// it is an insert\r\n wrapper.op = 'insert';\r\n buffer.splice(operation, 0, wrapper);\r\n if(isTop) {\r\n buffer.first--;\r\n }\r\n else {\r\n buffer.next++;\r\n }\r\n } else {\r\n wrapper.op = operation;\r\n switch (operation) {\r\n case 'append':\r\n buffer.push(wrapper);\r\n break;\r\n case 'prepend':\r\n buffer.unshift(wrapper);\r\n break;\r\n }\r\n }\r\n },\r\n\r\n // removes elements from buffer\r\n remove(arg1, arg2) {\r\n if (angular.isNumber(arg1)) {\r\n // removes items from arg1 (including) through arg2 (excluding)\r\n for (let i = arg1; i < arg2; i++) {\r\n elementRoutines.removeElement(buffer[i]);\r\n }\r\n return buffer.splice(arg1, arg2 - arg1);\r\n }\r\n // removes single item(wrapper) from the buffer\r\n buffer.splice(buffer.indexOf(arg1), 1);\r\n if(arg1._op === 'isTop' && buffer.first === this.getAbsMinIndex()) {\r\n this.incrementMinIndex();\r\n }\r\n else {\r\n this.decrementMaxIndex();\r\n }\r\n if(arg1._op === 'isTop') {\r\n buffer.first++;\r\n }\r\n else {\r\n buffer.next--;\r\n }\r\n if(!buffer.length) {\r\n buffer.first = 1;\r\n buffer.next = 1;\r\n }\r\n\r\n return elementRoutines.removeElementAnimated(arg1);\r\n },\r\n\r\n incrementMinIndex() {\r\n if(buffer.minIndexUser !== null) {\r\n if(buffer.minIndex > buffer.minIndexUser) {\r\n buffer.minIndexUser++;\r\n return;\r\n }\r\n if(buffer.minIndex === buffer.minIndexUser) {\r\n buffer.minIndexUser++;\r\n }\r\n }\r\n buffer.minIndex++;\r\n },\r\n\r\n decrementMaxIndex() {\r\n if(buffer.maxIndexUser !== null && buffer.maxIndex <= buffer.maxIndexUser) {\r\n buffer.maxIndexUser--;\r\n }\r\n buffer.maxIndex--;\r\n },\r\n\r\n getAbsMinIndex() {\r\n if(buffer.minIndexUser !== null) {\r\n return Math.min(buffer.minIndexUser, buffer.minIndex);\r\n }\r\n return buffer.minIndex;\r\n },\r\n\r\n getAbsMaxIndex() {\r\n if(buffer.maxIndexUser !== null) {\r\n return Math.max(buffer.maxIndexUser, buffer.maxIndex);\r\n }\r\n return buffer.maxIndex;\r\n },\r\n\r\n effectiveHeight(elements) {\r\n if (!elements.length) {\r\n return 0;\r\n }\r\n let top = Number.MAX_VALUE;\r\n let bottom = Number.NEGATIVE_INFINITY;\r\n elements.forEach((wrapper) => {\r\n if (wrapper.element[0].offsetParent) {\r\n // element style is not display:none\r\n top = Math.min(top, wrapper.element.offset().top);\r\n bottom = Math.max(bottom, wrapper.element.offset().top + wrapper.element.outerHeight(true));\r\n }\r\n });\r\n return Math.max(0, bottom - top);\r\n }\r\n\r\n });\r\n\r\n buffer.reset(startIndex);\r\n\r\n return buffer;\r\n}\r\n","// Can't just extend the Array, due to Babel does not support built-in classes extending\r\n// This solution was taken from https://stackoverflow.com/questions/46897414/es6-class-extends-array-workaround-for-es5-babel-transpile\r\nclass CacheProto {\r\n add(item) {\r\n for (let i = this.length - 1; i >= 0; i--) {\r\n if (this[i].index === item.scope.$index) {\r\n this[i].height = this.rowHeight || item.element.outerHeight();\r\n return;\r\n }\r\n }\r\n this.push({\r\n index: item.scope.$index,\r\n height: this.rowHeight || item.element.outerHeight()\r\n });\r\n this.sort((a, b) => ((a.index < b.index) ? -1 : ((a.index > b.index) ? 1 : 0)));\r\n }\r\n\r\n remove(argument, _isTop) {\r\n const index = argument % 1 === 0 ? argument : argument.scope.$index;\r\n const isTop = argument % 1 === 0 ? _isTop : argument._op === 'isTop';\r\n for (let i = this.length - 1; i >= 0; i--) {\r\n if (this[i].index === index) {\r\n this.splice(i, 1);\r\n break;\r\n }\r\n }\r\n if(!isTop) {\r\n for (let i = this.length - 1; i >= 0; i--) {\r\n if (this[i].index > index) {\r\n this[i].index--;\r\n }\r\n }\r\n }\r\n }\r\n\r\n clear() {\r\n this.length = 0;\r\n }\r\n}\r\n\r\nfunction Cache() {\r\n const instance = [];\r\n instance.push.apply(instance, arguments);\r\n Object.setPrototypeOf(instance, Cache.prototype);\r\n return instance;\r\n}\r\nCache.prototype = Object.create(Array.prototype);\r\nObject.getOwnPropertyNames(CacheProto.prototype).forEach(methodName =>\r\n Cache.prototype[methodName] = CacheProto.prototype[methodName]\r\n);\r\n\r\nfunction generateElement(template) {\r\n if(template.nodeType !== Node.ELEMENT_NODE) {\r\n throw new Error('ui-scroll directive requires an Element node for templating the view');\r\n }\r\n let element;\r\n switch (template.tagName.toLowerCase()) {\r\n case 'dl':\r\n throw new Error(`ui-scroll directive does not support <${template.tagName}> as a repeating tag: ${template.outerHTML}`);\r\n case 'tr':\r\n let table = angular.element('
    ');\r\n element = table.find('tr');\r\n break;\r\n case 'li':\r\n element = angular.element('
  • ');\r\n break;\r\n default:\r\n element = angular.element('
    ');\r\n }\r\n return element;\r\n}\r\n\r\nclass Padding {\r\n constructor(template,rowHeight) {\r\n this.element = generateElement(template);\r\n this.cache = new Cache();\r\n this.cache.rowHeight = rowHeight;\r\n }\r\n\r\n height() {\r\n // When called wit a parameter, this sets the height of the padding\r\n return this.element.height.apply(this.element, arguments);\r\n }\r\n}\r\n\r\nexport default Padding;","import Padding from './padding';\r\n\r\nexport default function Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding, rowHeight) {\r\n let topPadding = null;\r\n let bottomPadding = null;\r\n const viewport = viewportController && viewportController.viewport ? viewportController.viewport : angular.element(window);\r\n const container = viewportController && viewportController.container ? viewportController.container : undefined;\r\n const scope = viewportController && viewportController.scope ? viewportController.scope : $rootScope;\r\n\r\n viewport.css({\r\n 'overflow-anchor': 'none',\r\n 'overflow-y': 'auto',\r\n 'display': 'block'\r\n });\r\n\r\n function bufferPadding() {\r\n return viewport.outerHeight() * padding; // some extra space to initiate preload\r\n }\r\n\r\n angular.extend(viewport, {\r\n getScope() {\r\n return scope;\r\n },\r\n\r\n createPaddingElements(template) {\r\n topPadding = new Padding(template,rowHeight);\r\n bottomPadding = new Padding(template,rowHeight);\r\n element.before(topPadding.element);\r\n element.after(bottomPadding.element);\r\n topPadding.height(0);\r\n bottomPadding.height(0);\r\n },\r\n\r\n applyContainerStyle() {\r\n if (!container) {\r\n return true;\r\n }\r\n if(container !== viewport) {\r\n viewport.css('height', window.getComputedStyle(container[0]).height);\r\n }\r\n return viewport.height() > 0;\r\n },\r\n\r\n bottomDataPos() {\r\n let scrollHeight = viewport[0].scrollHeight;\r\n scrollHeight = scrollHeight != null ? scrollHeight : viewport[0].document.documentElement.scrollHeight;\r\n return scrollHeight - bottomPadding.height();\r\n },\r\n\r\n topDataPos() {\r\n return topPadding.height();\r\n },\r\n\r\n bottomVisiblePos() {\r\n return viewport.scrollTop() + viewport.outerHeight();\r\n },\r\n\r\n topVisiblePos() {\r\n return viewport.scrollTop();\r\n },\r\n\r\n insertElement(e, sibling) {\r\n return elementRoutines.insertElement(e, sibling || topPadding.element);\r\n },\r\n\r\n insertElementAnimated(e, sibling) {\r\n return elementRoutines.insertElementAnimated(e, sibling || topPadding.element);\r\n },\r\n\r\n shouldLoadBottom() {\r\n return !buffer.eof && viewport.bottomDataPos() < viewport.bottomVisiblePos() + bufferPadding();\r\n },\r\n\r\n clipBottom() {\r\n // clip the invisible items off the bottom\r\n let overage = 0;\r\n let overageHeight = 0;\r\n let itemHeight = 0;\r\n let emptySpaceHeight = viewport.bottomDataPos() - viewport.bottomVisiblePos() - bufferPadding();\r\n\r\n // Simple calculation now using the fixed rowHeight if available.\r\n // Might be optimized if needed\r\n for (let i = buffer.length - 1; i >= 0; i--) {\r\n itemHeight = rowHeight ? rowHeight : buffer[i].element.outerHeight(true);\r\n if (overageHeight + itemHeight > emptySpaceHeight) {\r\n break;\r\n }\r\n bottomPadding.cache.add(buffer[i]);\r\n overageHeight += itemHeight;\r\n overage++;\r\n }\r\n\r\n if (overage > 0) {\r\n buffer.eof = false;\r\n buffer.remove(buffer.length - overage, buffer.length);\r\n buffer.next -= overage;\r\n viewport.adjustPaddings();\r\n }\r\n },\r\n\r\n shouldLoadTop() {\r\n return !buffer.bof && (viewport.topDataPos() > viewport.topVisiblePos() - bufferPadding());\r\n },\r\n\r\n clipTop() {\r\n // clip the invisible items off the top\r\n let overage = 0;\r\n let overageHeight = 0;\r\n let itemHeight = 0;\r\n let emptySpaceHeight = viewport.topVisiblePos() - viewport.topDataPos() - bufferPadding();\r\n\r\n // Simple calculation now using the fixed rowHeight if available.\r\n // Might be optimized if needed\r\n for (let i = 0; i < buffer.length; i++) {\r\n itemHeight = rowHeight ? rowHeight : buffer[i].element.outerHeight(true);\r\n if (overageHeight + itemHeight > emptySpaceHeight) {\r\n break;\r\n }\r\n topPadding.cache.add(buffer[i]);\r\n overageHeight += itemHeight;\r\n overage++;\r\n }\r\n\r\n if (overage > 0) {\r\n // we need to adjust top padding element before items are removed from top\r\n // to avoid strange behaviour of scroll bar during remove top items when we are at the very bottom\r\n topPadding.height(topPadding.height() + overageHeight);\r\n buffer.bof = false;\r\n buffer.remove(0, overage);\r\n buffer.first += overage;\r\n }\r\n },\r\n\r\n adjustPaddings() {\r\n if (!buffer.length) {\r\n return;\r\n }\r\n\r\n // precise heights calculation based on items that are in buffer or that were in buffer once\r\n // outerHeight(true) == [height+ padding + border + margin]\r\n // The calculation bellow can certainly be replaced by:\r\n // const visibleItemsHeight = rowHeight ? rowHeight * buffer.length\r\n // : buffer.reduce((summ, item) => summ + item.element.outerHeight(true), 0);\r\n const visibleItemsHeight = buffer.reduce((summ, item) => summ + (rowHeight ? rowHeight : item.element.outerHeight(true)), 0);\r\n\r\n // Sinlarly, the calculation of the paddings (top & bottom) can certanly be optimizez\r\n let topPaddingHeight = 0, topCount = 0;\r\n topPadding.cache.forEach(item => {\r\n if(item.index < buffer.first) {\r\n topPaddingHeight += item.height; // outerHeight(true) is actually stored in this data member\r\n topCount++;\r\n }\r\n });\r\n\r\n let bottomPaddingHeight = 0, bottomCount = 0;\r\n bottomPadding.cache.forEach(item => {\r\n if(item.index >= buffer.next) {\r\n bottomPaddingHeight += item.height; // outerHeight(true) is actually stored in this data member\r\n bottomCount++;\r\n }\r\n });\r\n\r\n const totalHeight = visibleItemsHeight + topPaddingHeight + bottomPaddingHeight;\r\n const averageItemHeight = totalHeight / (topCount + bottomCount + buffer.length);\r\n\r\n // average heights calculation, items that have never been reached\r\n let adjustTopPadding = buffer.minIndexUser !== null && buffer.minIndex > buffer.minIndexUser;\r\n let adjustBottomPadding = buffer.maxIndexUser !== null && buffer.maxIndex < buffer.maxIndexUser;\r\n let topPaddingHeightAdd = adjustTopPadding ? (buffer.minIndex - buffer.minIndexUser) * averageItemHeight : 0;\r\n let bottomPaddingHeightAdd = adjustBottomPadding ? (buffer.maxIndexUser - buffer.maxIndex) * averageItemHeight : 0;\r\n\r\n // paddings combine adjustment\r\n topPadding.height(topPaddingHeight + topPaddingHeightAdd);\r\n bottomPadding.height(bottomPaddingHeight + bottomPaddingHeightAdd);\r\n },\r\n\r\n onAfterMinIndexSet(topPaddingHeightOld) {\r\n // additional scrollTop adjustment in case of datasource.minIndex external set\r\n if (buffer.minIndexUser !== null && buffer.minIndex > buffer.minIndexUser) {\r\n let diff = topPadding.height() - topPaddingHeightOld;\r\n viewport.scrollTop(viewport.scrollTop() + diff);\r\n while((diff -= viewport.scrollTop()) > 0) {\r\n bottomPadding.height(bottomPadding.height() + diff);\r\n viewport.scrollTop(viewport.scrollTop() + diff);\r\n }\r\n }\r\n },\r\n\r\n onAfterPrepend(updates) {\r\n if (!updates.prepended.length)\r\n return;\r\n const height = buffer.effectiveHeight(updates.prepended);\r\n const paddingHeight = topPadding.height() - height;\r\n if (paddingHeight >= 0) {\r\n topPadding.height(paddingHeight);\r\n }\r\n else {\r\n topPadding.height(0);\r\n viewport.scrollTop(viewport.scrollTop() - paddingHeight);\r\n }\r\n },\r\n\r\n resetTopPadding() {\r\n topPadding.height(0);\r\n topPadding.cache.clear();\r\n },\r\n\r\n resetBottomPadding() {\r\n bottomPadding.height(0);\r\n bottomPadding.cache.clear();\r\n },\r\n\r\n removeCacheItem(item, isTop) {\r\n topPadding.cache.remove(item, isTop);\r\n bottomPadding.cache.remove(item, isTop);\r\n },\r\n\r\n removeItem(item) {\r\n this.removeCacheItem(item);\r\n return buffer.remove(item);\r\n }\r\n });\r\n\r\n return viewport;\r\n}\r\n","class Adapter {\r\n\r\n constructor($scope, $parse, $attr, viewport, buffer, doAdjust, reload) {\r\n this.$parse = $parse;\r\n this.$attr = $attr;\r\n this.viewport = viewport;\r\n this.buffer = buffer;\r\n\r\n this.doAdjust = doAdjust;\r\n this.reload = reload;\r\n\r\n this.isLoading = false;\r\n this.disabled = false;\r\n\r\n const viewportScope = viewport.getScope();\r\n this.startScope = viewportScope.$parent ? viewportScope : $scope;\r\n\r\n this.publicContext = {};\r\n this.assignAdapter($attr.adapter);\r\n this.generatePublicContext();\r\n }\r\n\r\n assignAdapter(adapterAttr) {\r\n if (!adapterAttr || !(adapterAttr = adapterAttr.replace(/^\\s+|\\s+$/gm, ''))) {\r\n return;\r\n }\r\n let adapterOnScope;\r\n\r\n try {\r\n this.$parse(adapterAttr).assign(this.startScope, {});\r\n adapterOnScope = this.$parse(adapterAttr)(this.startScope);\r\n }\r\n catch (error) {\r\n error.message = `Angular ui-scroll Adapter assignment exception.\\n` +\r\n `Can't parse \"${adapterAttr}\" expression.\\n` +\r\n error.message;\r\n throw error;\r\n }\r\n\r\n angular.extend(adapterOnScope, this.publicContext);\r\n this.publicContext = adapterOnScope;\r\n }\r\n\r\n generatePublicContext() {\r\n // these methods will be accessible out of ui-scroll via user defined adapter\r\n const publicMethods = ['reload', 'applyUpdates', 'append', 'prepend', 'isBOF', 'isEOF', 'isEmpty'];\r\n for (let i = publicMethods.length - 1; i >= 0; i--) {\r\n this.publicContext[publicMethods[i]] = this[publicMethods[i]].bind(this);\r\n }\r\n\r\n // these read-only props will be accessible out of ui-scroll via user defined adapter\r\n const publicProps = ['isLoading', 'topVisible', 'topVisibleElement', 'topVisibleScope', 'bottomVisible', 'bottomVisibleElement', 'bottomVisibleScope'];\r\n for (let i = publicProps.length - 1; i >= 0; i--) {\r\n let property, attr = this.$attr[publicProps[i]];\r\n Object.defineProperty(this, publicProps[i], {\r\n get: () => property,\r\n set: (value) => {\r\n property = value;\r\n this.publicContext[publicProps[i]] = value;\r\n if (attr) {\r\n this.$parse(attr).assign(this.startScope, value);\r\n }\r\n }\r\n });\r\n }\r\n\r\n // non-read-only public property\r\n Object.defineProperty(this.publicContext, 'disabled', {\r\n get: () => this.disabled,\r\n set: (value) => (!(this.disabled = value)) ? this.doAdjust() : null\r\n });\r\n }\r\n\r\n loading(value) {\r\n this.isLoading = value;\r\n }\r\n\r\n isBOF() {\r\n return this.buffer.bof;\r\n }\r\n\r\n isEOF() {\r\n return this.buffer.eof;\r\n }\r\n\r\n isEmpty() {\r\n return !this.buffer.length;\r\n }\r\n\r\n append(newItems) {\r\n this.buffer.append(newItems);\r\n this.doAdjust();\r\n this.viewport.clipTop();\r\n this.viewport.clipBottom();\r\n }\r\n\r\n prepend(newItems) {\r\n this.buffer.prepend(newItems);\r\n this.doAdjust();\r\n this.viewport.clipTop();\r\n this.viewport.clipBottom();\r\n }\r\n\r\n applyUpdates(arg1, arg2) {\r\n if (typeof arg1 === 'function') {\r\n this.applyUpdatesFunc(arg1);\r\n } else {\r\n this.applyUpdatesIndex(arg1, arg2);\r\n }\r\n this.doAdjust();\r\n }\r\n\r\n applyUpdatesFunc(cb) {\r\n this.buffer.slice(0).forEach((wrapper) => {\r\n // we need to do it on the buffer clone, because buffer content\r\n // may change as we iterate through\r\n this.applyUpdate(wrapper, cb(wrapper.item, wrapper.scope, wrapper.element));\r\n });\r\n }\r\n\r\n applyUpdatesIndex(index, newItems) {\r\n if (index % 1 !== 0) {\r\n throw new Error('applyUpdates - ' + index + ' is not a valid index (should be an integer)');\r\n }\r\n const _index = index - this.buffer.first;\r\n\r\n // apply updates only within buffer\r\n if (_index >= 0 && _index < this.buffer.length) {\r\n this.applyUpdate(this.buffer[_index], newItems);\r\n }\r\n // out-of-buffer case: deletion may affect Paddings\r\n else if(index >= this.buffer.getAbsMinIndex() && index <= this.buffer.getAbsMaxIndex()) {\r\n if(angular.isArray(newItems) && !newItems.length) {\r\n this.viewport.removeCacheItem(index, index === this.buffer.minIndex);\r\n if(index === this.buffer.getAbsMinIndex()) {\r\n this.buffer.incrementMinIndex();\r\n }\r\n else {\r\n this.buffer.decrementMaxIndex();\r\n }\r\n }\r\n }\r\n }\r\n\r\n applyUpdate(wrapper, newItems) {\r\n if (!angular.isArray(newItems)) {\r\n return;\r\n }\r\n let position = this.buffer.indexOf(wrapper);\r\n if (!newItems.reverse().some(newItem => newItem === wrapper.item)) {\r\n wrapper.op = 'remove';\r\n if(position === 0 && !newItems.length) {\r\n wrapper._op = 'isTop'; // to catch \"first\" edge case on remove\r\n }\r\n }\r\n newItems.forEach((newItem) => {\r\n if (newItem === wrapper.item) {\r\n position--;\r\n } else {\r\n // 3 parameter (isTop) is to catch \"first\" edge case on insert\r\n this.buffer.insert(position + 1, newItem, position === -1);\r\n }\r\n });\r\n }\r\n\r\n calculateProperties() {\r\n let rowTop = null, topHeight = 0;\r\n let topDone = false, bottomDone = false;\r\n const length = this.buffer.length;\r\n\r\n for (let i = 0; i < length; i++) {\r\n const item = this.buffer[i];\r\n const itemTop = item.element.offset().top;\r\n\r\n if (rowTop !== itemTop) { // a new row condition\r\n const itemHeight = item.element.outerHeight(true);\r\n const top = this.viewport.topDataPos() + topHeight + itemHeight;\r\n\r\n if (!topDone && top > this.viewport.topVisiblePos()) {\r\n topDone = true;\r\n this['topVisible'] = item.item;\r\n this['topVisibleElement'] = item.element;\r\n this['topVisibleScope'] = item.scope;\r\n }\r\n if (!bottomDone && (top >= this.viewport.bottomVisiblePos() || (i === length - 1 && this.isEOF()))) {\r\n bottomDone = true;\r\n this['bottomVisible'] = item.item;\r\n this['bottomVisibleElement'] = item.element;\r\n this['bottomVisibleScope'] = item.scope;\r\n }\r\n topHeight += itemHeight;\r\n }\r\n rowTop = itemTop;\r\n\r\n if (topDone && bottomDone) {\r\n break;\r\n }\r\n }\r\n }\r\n\r\n}\r\n\r\nexport default Adapter;\r\n","import JQLiteExtras from './modules/jqLiteExtras';\nimport ElementRoutines from './modules/elementRoutines.js';\nimport ScrollBuffer from './modules/buffer.js';\nimport Viewport from './modules/viewport.js';\nimport Adapter from './modules/adapter.js';\n\nangular.module('ui.scroll', [])\n\n .constant('JQLiteExtras', JQLiteExtras)\n .run(['JQLiteExtras', (JQLiteExtras) => {\n !window.jQuery ? (new JQLiteExtras()).registerFor(angular.element) : null;\n ElementRoutines.addCSSRules();\n }])\n\n .directive('uiScrollViewport', function () {\n return {\n restrict: 'A',\n controller: [\n '$scope',\n '$element',\n function (scope, element) {\n this.container = element;\n this.viewport = element;\n this.scope = scope;\n\n angular.forEach(element.children(), child => {\n if (child.tagName.toLowerCase() === 'tbody') {\n this.viewport = angular.element(child);\n }\n });\n\n return this;\n }\n ]\n };\n })\n\n .directive('uiScroll', [\n '$log',\n '$injector',\n '$rootScope',\n '$timeout',\n '$interval',\n '$q',\n '$parse',\n function (console, $injector, $rootScope, $timeout, $interval, $q, $parse) {\n\n return {\n require: ['?^uiScrollViewport'],\n restrict: 'A',\n transclude: 'element',\n priority: 1000,\n terminal: true,\n link: link\n };\n\n function link($scope, element, $attr, controllers, linker) {\n const match = $attr.uiScroll.match(/^\\s*(\\w+)\\s+in\\s+([(\\w|\\$)\\.]+)\\s*$/);\n if (!match) {\n throw new Error('Expected uiScroll in form of \\'_item_ in _datasource_\\' but got \\'' + $attr.uiScroll + '\\'');\n }\n\n function parseNumber(value, defaultValue, isFloat) {\n if (!isFloat) {\n value = value === null ? defaultValue : Math.floor(value);\n }\n return isNaN(value) ? defaultValue : value;\n }\n\n function parseNumericAttr(value, defaultValue, isFloat) {\n const result = $parse(value)($scope);\n return parseNumber(result, defaultValue, isFloat);\n }\n\n const BUFFER_MIN = 3; // Minimum size of the data source request\n const BUFFER_DEFAULT = 10; // Default datasource request size\n const PADDING_MIN = 0.3; // Mininum # of rows in the padding area\n const PADDING_DEFAULT = 0.5; // Default # of rows in the padding area\n const START_INDEX_DEFAULT = 1; // Default start index when requestng the first data block\n const MAX_VIEWPORT_DELAY = 500; // Max time wait (ms) to get the viewport with an height>0\n const VIEWPORT_POLLING_INTERVAL = 50; // Interval used to check the initial viewport height\n\n let datasource = null;\n const itemName = match[1]; // Name of the index variable to publish\n const datasourceName = match[2]; // Name of the datasource to request the rows from\n const viewportController = controllers[0]; // ViewportController, as specified in the require option (http://websystique.com/angularjs/angularjs-custom-directives-controllers-require-option-guide/)\n const bufferSize = Math.max(BUFFER_MIN, parseNumericAttr($attr.bufferSize, BUFFER_DEFAULT)); \n const padding = Math.max(PADDING_MIN, parseNumericAttr($attr.padding, PADDING_DEFAULT, true));\n let startIndex = parseNumericAttr($attr.startIndex, START_INDEX_DEFAULT);\n\n // PHIL: Provide a fixed row height\n // \n const rowHeight = parseNumericAttr($attr.rowHeight, null, false);\n\n // PHIL: Read the visibility watch option, true by default\n const allowVisibilityWatch = $attr.allowVisibilityWatch!=='false';\n\n // Revision IDs\n // \n let ridActual = 0; // current data revision id\n let pending = [];\n\n const elementRoutines = new ElementRoutines($injector, $q);\n const buffer = new ScrollBuffer(elementRoutines, bufferSize, startIndex);\n const viewport = new Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding, rowHeight);\n const adapter = new Adapter($scope, $parse, $attr, viewport, buffer, doAdjust, reload);\n\n if (viewportController) {\n viewportController.adapter = adapter;\n }\n\n const isDatasourceValid = () =>\n Object.prototype.toString.call(datasource) === '[object Object]' && typeof datasource.get === 'function';\n\n datasource = $parse(datasourceName)($scope); // try to get datasource on scope\n if (!isDatasourceValid()) {\n datasource = $injector.get(datasourceName); // try to inject datasource as service\n if (!isDatasourceValid()) {\n throw new Error(datasourceName + ' is not a valid datasource');\n }\n }\n\n let onRenderHandlers = [];\n function onRenderHandlersRunner() {\n onRenderHandlers.forEach(handler => handler.run());\n onRenderHandlers = [];\n }\n function persistDatasourceIndex(datasource, propName) {\n let getter;\n // need to postpone min/maxIndexUser processing if the view is empty\n if(angular.isNumber(datasource[propName])) {\n getter = datasource[propName];\n if(angular.isNumber(getter)) {\n onRenderHandlers = onRenderHandlers.filter(handler => handler.id !== propName);\n onRenderHandlers.push({\n id: propName,\n run: () => datasource[propName] = getter\n });\n }\n }\n }\n\n function defineDatasourceIndex(datasource, propName, propUserName) {\n const descriptor = Object.getOwnPropertyDescriptor(datasource, propName);\n if (descriptor && (descriptor.set || descriptor.get)) {\n return;\n }\n let getter;\n persistDatasourceIndex(datasource, propName);\n Object.defineProperty(datasource, propName, {\n set: (value) => {\n getter = value;\n if(pending.length && !buffer.length) {\n persistDatasourceIndex(datasource, propName);\n return;\n }\n buffer[propUserName] = value;\n const topPaddingHeightOld = viewport.topDataPos();\n viewport.adjustPaddings();\n if (propName === 'minIndex') {\n viewport.onAfterMinIndexSet(topPaddingHeightOld);\n }\n },\n get: () => getter\n });\n }\n\n defineDatasourceIndex(datasource, 'minIndex', 'minIndexUser');\n defineDatasourceIndex(datasource, 'maxIndex', 'maxIndexUser');\n\n const fetchNext = (datasource.get.length !== 2) ?\n (success) => datasource.get(buffer.next, bufferSize, success) :\n (success) => {\n datasource.get({\n index: buffer.next,\n append: buffer.length ? buffer[buffer.length - 1].item : void 0,\n count: bufferSize\n }, success);\n };\n\n const fetchPrevious = (datasource.get.length !== 2) ?\n (success) => datasource.get(buffer.first - bufferSize, bufferSize, success) :\n (success) => {\n datasource.get({\n index: buffer.first - bufferSize,\n prepend: buffer.length ? buffer[0].item : void 0,\n count: bufferSize\n }, success);\n };\n\n const initialize = () => {\n let tryCount = 0;\n if(!viewport.applyContainerStyle()) {\n const timer = $interval(() => {\n tryCount++;\n if(viewport.applyContainerStyle()) {\n $interval.cancel(timer);\n doAdjust();\n }\n if(tryCount * VIEWPORT_POLLING_INTERVAL >= MAX_VIEWPORT_DELAY) {\n $interval.cancel(timer);\n throw Error(`ui-scroll directive requires a viewport with non-zero height in ${MAX_VIEWPORT_DELAY}ms`);\n }\n }, VIEWPORT_POLLING_INTERVAL);\n }\n else {\n doAdjust();\n }\n };\n\n /**\n * Build padding elements\n *\n * Calling linker is the only way I found to get access to the tag name of the template\n * to prevent the directive scope from pollution a new scope is created and destroyed\n * right after the builder creation is completed\n */\n linker((clone, scope) => {\n viewport.createPaddingElements(clone[0]);\n // we do not include the clone in the DOM. It means that the nested directives will not\n // be able to reach the parent directives, but in this case it is intentional because we\n // created the clone to access the template tag name\n scope.$destroy();\n clone.remove();\n });\n\n $scope.$on('$destroy', () => {\n unbindEvents();\n viewport.unbind('mousewheel', wheelHandler);\n });\n\n viewport.bind('mousewheel', wheelHandler);\n\n initialize();\n\n /* Private function definitions */\n\n function isInvalid(rid) {\n return (rid && rid !== ridActual) || $scope.$$destroyed;\n }\n\n function bindEvents() {\n viewport.bind('resize', resizeAndScrollHandler);\n viewport.bind('scroll', resizeAndScrollHandler);\n }\n\n function unbindEvents() {\n viewport.unbind('resize', resizeAndScrollHandler);\n viewport.unbind('scroll', resizeAndScrollHandler);\n }\n\n function reload() {\n viewport.resetTopPadding();\n viewport.resetBottomPadding();\n if (arguments.length) {\n startIndex = parseNumber(arguments[0], START_INDEX_DEFAULT, false);\n }\n buffer.reset(startIndex);\n persistDatasourceIndex(datasource, 'minIndex');\n persistDatasourceIndex(datasource, 'maxIndex');\n doAdjust();\n }\n\n function isElementVisible(wrapper) {\n return (rowHeight || wrapper.element.height()) && wrapper.element[0].offsetParent;\n }\n\n function visibilityWatcher(wrapper) {\n if (isElementVisible(wrapper)) {\n buffer.forEach((item) => {\n if (typeof item.unregisterVisibilityWatcher === 'function') {\n item.unregisterVisibilityWatcher();\n delete item.unregisterVisibilityWatcher;\n }\n });\n if (!pending.length) {\n $timeout(() => doAdjust());\n }\n }\n }\n\n function insertWrapperContent(wrapper, insertAfter) {\n createElement(wrapper, insertAfter, viewport.insertElement);\n if (allowVisibilityWatch && !isElementVisible(wrapper)) {\n wrapper.unregisterVisibilityWatcher = wrapper.scope.$watch(() => visibilityWatcher(wrapper));\n }\n if (allowVisibilityWatch) {\n elementRoutines.hideElement(wrapper); // hide inserted elements before data binding\n }\n }\n\n function createElement(wrapper, insertAfter, insertElement) {\n let promises = null;\n const sibling = (insertAfter > 0) ? buffer[insertAfter - 1].element : undefined;\n linker((clone, scope) => {\n promises = insertElement(clone, sibling);\n wrapper.element = clone;\n wrapper.scope = scope;\n scope[itemName] = wrapper.item;\n });\n // ui-scroll-grid apply\n if (adapter.transform) {\n const tdInitializer = wrapper.scope.uiScrollTdInitializer;\n if (tdInitializer && tdInitializer.linking) {\n adapter.transform(wrapper.scope, wrapper.element);\n } else {\n wrapper.scope.uiScrollTdInitializer = {\n onLink: () => adapter.transform(wrapper.scope, wrapper.element),\n scope: wrapper.scope\n };\n }\n }\n return promises;\n }\n\n function updateDOM() {\n let promises = [];\n const toBePrepended = [];\n const toBeRemoved = [];\n const inserted = [];\n\n buffer.forEach((wrapper, i) => {\n switch (wrapper.op) {\n case 'prepend':\n toBePrepended.unshift(wrapper);\n break;\n case 'append':\n insertWrapperContent(wrapper, i);\n wrapper.op = 'none';\n inserted.push(wrapper);\n break;\n case 'insert':\n promises = promises.concat(createElement(wrapper, i, viewport.insertElementAnimated));\n wrapper.op = 'none';\n inserted.push(wrapper);\n break;\n case 'remove':\n toBeRemoved.push(wrapper);\n }\n });\n\n toBeRemoved.forEach((wrapper) => promises = promises.concat(viewport.removeItem(wrapper)));\n\n if (toBePrepended.length)\n toBePrepended.forEach((wrapper) => {\n insertWrapperContent(wrapper);\n wrapper.op = 'none';\n });\n\n buffer.forEach((item, i) => item.scope.$index = buffer.first + i);\n\n return {\n prepended: toBePrepended,\n removed: toBeRemoved,\n inserted: inserted,\n animated: promises\n };\n\n }\n\n // Adjust the viewport paddings\n // \n function updatePaddings(rid, updates) {\n // schedule another doAdjust after animation completion\n if (updates.animated.length) {\n $q.all(updates.animated).then(() => {\n viewport.adjustPaddings();\n doAdjust(rid);\n });\n } else {\n viewport.adjustPaddings();\n }\n }\n\n function enqueueFetch(rid, updates) {\n if (viewport.shouldLoadBottom()) {\n if (!updates || buffer.effectiveHeight(updates.inserted) > 0) {\n // this means that at least one item appended in the last batch has height > 0\n if (pending.push(true) === 1) {\n adapter.loading(true);\n fetch(rid);\n }\n }\n } else if (viewport.shouldLoadTop()) {\n if ((!updates || buffer.effectiveHeight(updates.prepended) > 0) || pending[0]) {\n // this means that at least one item appended in the last batch has height > 0\n // pending[0] = true means that previous fetch was appending. We need to force at least one prepend\n // BTW there will always be at least 1 element in the pending array because bottom is fetched first\n if (pending.push(false) === 1) {\n adapter.loading(true);\n fetch(rid);\n }\n }\n }\n }\n\n function processUpdates() {\n const updates = updateDOM();\n\n // We need the item bindings to be processed before we can do adjustments\n !$scope.$$phase && !$rootScope.$$phase && $scope.$digest();\n\n if (allowVisibilityWatch) {\n updates.inserted.forEach(w => elementRoutines.showElement(w));\n updates.prepended.forEach(w => elementRoutines.showElement(w));\n }\n\n return updates;\n }\n\n function doAdjust(rid) {\n if (!rid) { // dismiss pending requests\n pending = [];\n rid = ++ridActual;\n }\n\n const updates = processUpdates();\n\n if (isInvalid(rid)) {\n return;\n }\n\n updatePaddings(rid, updates);\n enqueueFetch(rid);\n\n if (!pending.length) {\n adapter.calculateProperties();\n }\n }\n\n function doAdjustAfterFetch(rid) {\n const updates = processUpdates();\n\n viewport.onAfterPrepend(updates);\n\n if (isInvalid(rid)) {\n return;\n }\n\n updatePaddings(rid, updates);\n onRenderHandlersRunner();\n enqueueFetch(rid, updates);\n pending.shift();\n\n if (pending.length)\n fetch(rid);\n else {\n adapter.loading(false);\n bindEvents();\n adapter.calculateProperties();\n }\n }\n\n function fetch(rid) {\n if (pending[0]) {// scrolling down\n if (buffer.length && !viewport.shouldLoadBottom()) {\n doAdjustAfterFetch(rid);\n } else {\n fetchNext((result) => {\n if (isInvalid(rid)) {\n return;\n }\n\n if (result.length < bufferSize) {\n buffer.eof = true;\n }\n\n if (result.length > 0) {\n viewport.clipTop();\n buffer.append(result);\n }\n\n doAdjustAfterFetch(rid);\n });\n }\n } else { // scrolling up\n if (buffer.length && !viewport.shouldLoadTop()) {\n doAdjustAfterFetch(rid);\n } else {\n fetchPrevious((result) => {\n if (isInvalid(rid)) {\n return;\n }\n\n if (result.length < bufferSize) {\n buffer.bof = true;\n // log 'bof is reached'\n }\n\n if (result.length > 0) {\n if (buffer.length) {\n viewport.clipBottom();\n }\n buffer.prepend(result);\n }\n\n doAdjustAfterFetch(rid);\n });\n }\n }\n }\n\n function resizeAndScrollHandler() {\n if (!$rootScope.$$phase && !adapter.isLoading && !adapter.disabled) {\n\n enqueueFetch(ridActual);\n\n if (pending.length) {\n unbindEvents();\n } else {\n adapter.calculateProperties();\n if(!rowHeight) {\n // The digest is forced to calculate the height, which is not necessary when the height is knowm\n !$scope.$$phase && $scope.$digest();\n }\n }\n }\n }\n\n function wheelHandler(event) {\n if (!adapter.disabled) {\n const scrollTop = viewport[0].scrollTop;\n const yMax = viewport[0].scrollHeight - viewport[0].clientHeight;\n\n if ((scrollTop === 0 && !buffer.bof) || (scrollTop === yMax && !buffer.eof)) {\n event.preventDefault();\n }\n }\n }\n }\n\n }\n ]);\n"],"sourceRoot":""} \ No newline at end of file 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missing methods\r\n return angular.forEach({\r\n before(newElem) {\r\n var children, elem, i, j, parent, ref, self;\r\n self = this;\r\n elem = self[0];\r\n parent = self.parent();\r\n children = parent.contents();\r\n if (children[0] === elem) {\r\n return parent.prepend(newElem);\r\n } else {\r\n for (i = j = 1, ref = children.length - 1; 1 <= ref ? j <= ref : j >= ref; i = 1 <= ref ? ++j : --j) {\r\n if (children[i] === elem) {\r\n angular.element(children[i - 1]).after(newElem);\r\n return;\r\n }\r\n }\r\n throw new Error('invalid DOM structure ' + elem.outerHTML);\r\n }\r\n },\r\n height (value){\r\n var self;\r\n self = this;\r\n if (typeof value !== 'undefined') {\r\n if (angular.isNumber(value)) {\r\n value = value + 'px';\r\n }\r\n return css.call(self, 'height', value);\r\n } else {\r\n return getWidthHeight(this[0], 'height', 'base');\r\n }\r\n },\r\n outerHeight(option) {\r\n return getWidthHeight(this[0], 'height', option ? 'outerfull' : 'outer');\r\n },\r\n outerWidth(option) {\r\n return getWidthHeight(this[0], 'width', option ? 'outerfull' : 'outer');\r\n },\r\n\r\n /*\r\n The offset setter method is not implemented\r\n */\r\n offset(value) {\r\n let docElem, win;\r\n let self = this;\r\n let box = {\r\n top: 0,\r\n left: 0\r\n };\r\n let elem = self[0];\r\n let doc = elem && elem.ownerDocument;\r\n\r\n if (arguments.length) {\r\n if (value === undefined) {\r\n return self;\r\n }\r\n // TODO: implement setter\r\n throw new Error('offset setter method is not implemented');\r\n }\r\n\r\n if (!doc) {\r\n return;\r\n }\r\n\r\n docElem = doc.documentElement;\r\n\r\n // TODO: Make sure it's not a disconnected DOM node\r\n\r\n if (elem.getBoundingClientRect != null) {\r\n box = elem.getBoundingClientRect();\r\n }\r\n\r\n win = doc.defaultView || doc.parentWindow;\r\n\r\n return {\r\n top: box.top + (win.pageYOffset || docElem.scrollTop) - (docElem.clientTop || 0),\r\n left: box.left + (win.pageXOffset || docElem.scrollLeft) - (docElem.clientLeft || 0)\r\n };\r\n },\r\n scrollTop(value) {\r\n return scrollTo(this, 'top', value);\r\n },\r\n scrollLeft(value) {\r\n return scrollTo(this, 'left', value);\r\n }\r\n }, (value, key) => {\r\n if (!element.prototype[key]) {\r\n return element.prototype[key] = value;\r\n }\r\n });\r\n }\r\n\r\n}\r\n","const hideClassToken = 'ng-ui-scroll-hide';\r\n\r\nexport default class ElementRoutines {\r\n\r\n static addCSSRules() {\r\n const selector = '.' + hideClassToken;\r\n const rules = 'display: none';\r\n const sheet = document.styleSheets[0];\r\n let index;\r\n try {\r\n index = sheet.cssRules.length;\r\n } catch (err) {\r\n index = 0;\r\n }\r\n if('insertRule' in sheet) {\r\n sheet.insertRule(selector + '{' + rules + '}', index);\r\n }\r\n else if('addRule' in sheet) {\r\n sheet.addRule(selector, rules, index);\r\n }\r\n }\r\n\r\n constructor($injector, $q) {\r\n this.$animate = ($injector.has && $injector.has('$animate')) ? $injector.get('$animate') : null;\r\n this.isAngularVersionLessThen1_3 = angular.version.major === 1 && angular.version.minor < 3;\r\n this.$q = $q;\r\n }\r\n\r\n hideElement(wrapper) {\r\n wrapper.element.addClass(hideClassToken);\r\n }\r\n\r\n showElement(wrapper) {\r\n wrapper.element.removeClass(hideClassToken);\r\n }\r\n\r\n insertElement(newElement, previousElement) {\r\n previousElement.after(newElement);\r\n return [];\r\n }\r\n\r\n removeElement(wrapper) {\r\n wrapper.element.remove();\r\n wrapper.scope.$destroy();\r\n return [];\r\n }\r\n\r\n insertElementAnimated(newElement, previousElement) {\r\n if (!this.$animate) {\r\n return this.insertElement(newElement, previousElement);\r\n }\r\n\r\n if (this.isAngularVersionLessThen1_3) {\r\n const deferred = this.$q.defer();\r\n // no need for parent - previous element is never null\r\n this.$animate.enter(newElement, null, previousElement, () => deferred.resolve());\r\n\r\n return [deferred.promise];\r\n }\r\n\r\n // no need for parent - previous element is never null\r\n return [this.$animate.enter(newElement, null, previousElement)];\r\n }\r\n\r\n removeElementAnimated(wrapper) {\r\n if (!this.$animate) {\r\n return this.removeElement(wrapper);\r\n }\r\n\r\n if (this.isAngularVersionLessThen1_3) {\r\n const deferred = this.$q.defer();\r\n this.$animate.leave(wrapper.element, () => {\r\n wrapper.scope.$destroy();\r\n return deferred.resolve();\r\n });\r\n\r\n return [deferred.promise];\r\n }\r\n\r\n return [(this.$animate.leave(wrapper.element)).then(() => wrapper.scope.$destroy())];\r\n }\r\n}","export default function ScrollBuffer(elementRoutines, bufferSize, startIndex, rowHeight) {\r\n const buffer = Object.create(Array.prototype);\r\n\r\n angular.extend(buffer, {\r\n size: bufferSize,\r\n\r\n reset(startIndex) {\r\n buffer.remove(0, buffer.length);\r\n buffer.eof = false;\r\n buffer.bof = false;\r\n buffer.first = startIndex;\r\n buffer.next = startIndex;\r\n buffer.minIndex = startIndex;\r\n buffer.maxIndex = startIndex;\r\n buffer.minIndexUser = null;\r\n buffer.maxIndexUser = null;\r\n },\r\n\r\n append(items) {\r\n items.forEach((item) => {\r\n ++buffer.next;\r\n buffer.insert('append', item);\r\n });\r\n buffer.maxIndex = buffer.eof ? buffer.next - 1 : Math.max(buffer.next - 1, buffer.maxIndex);\r\n },\r\n\r\n prepend(items) {\r\n items.reverse().forEach((item) => {\r\n --buffer.first;\r\n buffer.insert('prepend', item);\r\n });\r\n buffer.minIndex = buffer.bof ? buffer.minIndex = buffer.first : Math.min(buffer.first, buffer.minIndex);\r\n },\r\n\r\n /**\r\n * inserts wrapped element in the buffer\r\n * the first argument is either operation keyword (see below) or a number for operation 'insert'\r\n * for insert the number is the index for the buffer element the new one have to be inserted after\r\n * operations: 'append', 'prepend', 'insert', 'remove', 'update', 'none'\r\n */\r\n insert(operation, item, isTop) {\r\n const wrapper = {\r\n item: item\r\n };\r\n\r\n if (operation % 1 === 0) {// it is an insert\r\n wrapper.op = 'insert';\r\n buffer.splice(operation, 0, wrapper);\r\n if(isTop) {\r\n buffer.first--;\r\n }\r\n else {\r\n buffer.next++;\r\n }\r\n } else {\r\n wrapper.op = operation;\r\n switch (operation) {\r\n case 'append':\r\n buffer.push(wrapper);\r\n break;\r\n case 'prepend':\r\n buffer.unshift(wrapper);\r\n break;\r\n }\r\n }\r\n },\r\n\r\n // removes elements from buffer\r\n remove(arg1, arg2) {\r\n if (angular.isNumber(arg1)) {\r\n // removes items from arg1 (including) through arg2 (excluding)\r\n for (let i = arg1; i < arg2; i++) {\r\n elementRoutines.removeElement(buffer[i]);\r\n }\r\n return buffer.splice(arg1, arg2 - arg1);\r\n }\r\n // removes single item(wrapper) from the buffer\r\n buffer.splice(buffer.indexOf(arg1), 1);\r\n if(arg1._op === 'isTop' && buffer.first === this.getAbsMinIndex()) {\r\n this.incrementMinIndex();\r\n }\r\n else {\r\n this.decrementMaxIndex();\r\n }\r\n if(arg1._op === 'isTop') {\r\n buffer.first++;\r\n }\r\n else {\r\n buffer.next--;\r\n }\r\n if(!buffer.length) {\r\n buffer.first = 1;\r\n buffer.next = 1;\r\n }\r\n\r\n return elementRoutines.removeElementAnimated(arg1);\r\n },\r\n\r\n incrementMinIndex() {\r\n if(buffer.minIndexUser !== null) {\r\n if(buffer.minIndex > buffer.minIndexUser) {\r\n buffer.minIndexUser++;\r\n return;\r\n }\r\n if(buffer.minIndex === buffer.minIndexUser) {\r\n buffer.minIndexUser++;\r\n }\r\n }\r\n buffer.minIndex++;\r\n },\r\n\r\n decrementMaxIndex() {\r\n if(buffer.maxIndexUser !== null && buffer.maxIndex <= buffer.maxIndexUser) {\r\n buffer.maxIndexUser--;\r\n }\r\n buffer.maxIndex--;\r\n },\r\n\r\n getAbsMinIndex() {\r\n if(buffer.minIndexUser !== null) {\r\n return Math.min(buffer.minIndexUser, buffer.minIndex);\r\n }\r\n return buffer.minIndex;\r\n },\r\n\r\n getAbsMaxIndex() {\r\n if(buffer.maxIndexUser !== null) {\r\n return Math.max(buffer.maxIndexUser, buffer.maxIndex);\r\n }\r\n return buffer.maxIndex;\r\n },\r\n\r\n effectiveHeight(elements) {\r\n if (!elements.length) {\r\n return 0;\r\n }\r\n let top = Number.MAX_VALUE;\r\n let bottom = Number.NEGATIVE_INFINITY;\r\n elements.forEach((wrapper) => {\r\n if (wrapper.element[0].offsetParent) {\r\n // element style is not display:none\r\n top = Math.min(top, wrapper.element.offset().top);\r\n bottom = Math.max(bottom, wrapper.element.offset().top + (rowHeight ? rowHeight : wrapper.element.outerHeight(true)));\r\n }\r\n });\r\n return Math.max(0, bottom - top);\r\n }\r\n\r\n });\r\n\r\n buffer.reset(startIndex);\r\n\r\n return buffer;\r\n}\r\n","// Can't just extend the Array, due to Babel does not support built-in classes extending\r\n// This solution was taken from https://stackoverflow.com/questions/46897414/es6-class-extends-array-workaround-for-es5-babel-transpile\r\nclass CacheProto {\r\n add(item) {\r\n for (let i = this.length - 1; i >= 0; i--) {\r\n if (this[i].index === item.scope.$index) {\r\n this[i].height = this.rowHeight || item.element.outerHeight();\r\n return;\r\n }\r\n }\r\n this.push({\r\n index: item.scope.$index,\r\n height: this.rowHeight || item.element.outerHeight()\r\n });\r\n this.sort((a, b) => ((a.index < b.index) ? -1 : ((a.index > b.index) ? 1 : 0)));\r\n }\r\n\r\n remove(argument, _isTop) {\r\n const index = argument % 1 === 0 ? argument : argument.scope.$index;\r\n const isTop = argument % 1 === 0 ? _isTop : argument._op === 'isTop';\r\n for (let i = this.length - 1; i >= 0; i--) {\r\n if (this[i].index === index) {\r\n this.splice(i, 1);\r\n break;\r\n }\r\n }\r\n if(!isTop) {\r\n for (let i = this.length - 1; i >= 0; i--) {\r\n if (this[i].index > index) {\r\n this[i].index--;\r\n }\r\n }\r\n }\r\n }\r\n\r\n clear() {\r\n this.length = 0;\r\n }\r\n}\r\n\r\nfunction Cache() {\r\n const instance = [];\r\n instance.push.apply(instance, arguments);\r\n Object.setPrototypeOf(instance, Cache.prototype);\r\n return instance;\r\n}\r\nCache.prototype = Object.create(Array.prototype);\r\nObject.getOwnPropertyNames(CacheProto.prototype).forEach(methodName =>\r\n Cache.prototype[methodName] = CacheProto.prototype[methodName]\r\n);\r\n\r\nfunction generateElement(template) {\r\n if(template.nodeType !== Node.ELEMENT_NODE) {\r\n throw new Error('ui-scroll directive requires an Element node for templating the view');\r\n }\r\n let element;\r\n switch (template.tagName.toLowerCase()) {\r\n case 'dl':\r\n throw new Error(`ui-scroll directive does not support <${template.tagName}> as a repeating tag: ${template.outerHTML}`);\r\n case 'tr':\r\n let table = angular.element('
    ');\r\n element = table.find('tr');\r\n break;\r\n case 'li':\r\n element = angular.element('
  • ');\r\n break;\r\n default:\r\n element = angular.element('
    ');\r\n }\r\n return element;\r\n}\r\n\r\nclass Padding {\r\n constructor(template,rowHeight) {\r\n this.element = generateElement(template);\r\n this.cache = new Cache();\r\n this.cache.rowHeight = rowHeight;\r\n }\r\n\r\n height() {\r\n // When called wit a parameter, this sets the height of the padding\r\n return this.element.height.apply(this.element, arguments);\r\n }\r\n}\r\n\r\nexport default Padding;","import Padding from './padding';\r\n\r\nexport default function Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding, rowHeight) {\r\n let topPadding = null;\r\n let bottomPadding = null;\r\n const viewport = viewportController && viewportController.viewport ? viewportController.viewport : angular.element(window);\r\n const container = viewportController && viewportController.container ? viewportController.container : undefined;\r\n const scope = viewportController && viewportController.scope ? viewportController.scope : $rootScope;\r\n\r\n viewport.css({\r\n 'overflow-anchor': 'none',\r\n 'overflow-y': 'auto',\r\n 'display': 'block'\r\n });\r\n\r\n function bufferPadding() {\r\n return viewport.outerHeight() * padding; // some extra space to initiate preload\r\n }\r\n\r\n angular.extend(viewport, {\r\n getScope() {\r\n return scope;\r\n },\r\n\r\n createPaddingElements(template) {\r\n topPadding = new Padding(template,rowHeight);\r\n bottomPadding = new Padding(template,rowHeight);\r\n element.before(topPadding.element);\r\n element.after(bottomPadding.element);\r\n topPadding.height(0);\r\n bottomPadding.height(0);\r\n },\r\n\r\n applyContainerStyle() {\r\n if (!container) {\r\n return true;\r\n }\r\n if(container !== viewport) {\r\n viewport.css('height', window.getComputedStyle(container[0]).height);\r\n }\r\n return viewport.height() > 0;\r\n },\r\n\r\n bottomDataPos() {\r\n let scrollHeight = viewport[0].scrollHeight;\r\n scrollHeight = scrollHeight != null ? scrollHeight : viewport[0].document.documentElement.scrollHeight;\r\n return scrollHeight - bottomPadding.height();\r\n },\r\n\r\n topDataPos() {\r\n return topPadding.height();\r\n },\r\n\r\n bottomVisiblePos() {\r\n return viewport.scrollTop() + viewport.outerHeight();\r\n },\r\n\r\n topVisiblePos() {\r\n return viewport.scrollTop();\r\n },\r\n\r\n insertElement(e, sibling) {\r\n return elementRoutines.insertElement(e, sibling || topPadding.element);\r\n },\r\n\r\n insertElementAnimated(e, sibling) {\r\n return elementRoutines.insertElementAnimated(e, sibling || topPadding.element);\r\n },\r\n\r\n shouldLoadBottom() {\r\n return !buffer.eof && viewport.bottomDataPos() < viewport.bottomVisiblePos() + bufferPadding();\r\n },\r\n\r\n clipBottom() {\r\n // clip the invisible items off the bottom\r\n let overage = 0;\r\n let overageHeight = 0;\r\n let itemHeight = 0;\r\n let emptySpaceHeight = viewport.bottomDataPos() - viewport.bottomVisiblePos() - bufferPadding();\r\n\r\n // Simple calculation now using the fixed rowHeight if available.\r\n // Might be optimized if needed\r\n for (let i = buffer.length - 1; i >= 0; i--) {\r\n itemHeight = rowHeight ? rowHeight : buffer[i].element.outerHeight(true);\r\n if (overageHeight + itemHeight > emptySpaceHeight) {\r\n break;\r\n }\r\n bottomPadding.cache.add(buffer[i]);\r\n overageHeight += itemHeight;\r\n overage++;\r\n }\r\n\r\n if (overage > 0) {\r\n buffer.eof = false;\r\n buffer.remove(buffer.length - overage, buffer.length);\r\n buffer.next -= overage;\r\n viewport.adjustPaddings();\r\n }\r\n },\r\n\r\n shouldLoadTop() {\r\n return !buffer.bof && (viewport.topDataPos() > viewport.topVisiblePos() - bufferPadding());\r\n },\r\n\r\n clipTop() {\r\n // clip the invisible items off the top\r\n let overage = 0;\r\n let overageHeight = 0;\r\n let itemHeight = 0;\r\n let emptySpaceHeight = viewport.topVisiblePos() - viewport.topDataPos() - bufferPadding();\r\n\r\n // Simple calculation now using the fixed rowHeight if available.\r\n // Might be optimized if needed\r\n for (let i = 0; i < buffer.length; i++) {\r\n itemHeight = rowHeight ? rowHeight : buffer[i].element.outerHeight(true);\r\n if (overageHeight + itemHeight > emptySpaceHeight) {\r\n break;\r\n }\r\n topPadding.cache.add(buffer[i]);\r\n overageHeight += itemHeight;\r\n overage++;\r\n }\r\n\r\n if (overage > 0) {\r\n // we need to adjust top padding element before items are removed from top\r\n // to avoid strange behaviour of scroll bar during remove top items when we are at the very bottom\r\n topPadding.height(topPadding.height() + overageHeight);\r\n buffer.bof = false;\r\n buffer.remove(0, overage);\r\n buffer.first += overage;\r\n }\r\n },\r\n\r\n adjustPaddings() {\r\n if (!buffer.length) {\r\n return;\r\n }\r\n\r\n // precise heights calculation based on items that are in buffer or that were in buffer once\r\n // outerHeight(true) == [height+ padding + border + margin]\r\n // The calculation bellow can certainly be replaced by:\r\n // const visibleItemsHeight = rowHeight ? rowHeight * buffer.length\r\n // : buffer.reduce((summ, item) => summ + item.element.outerHeight(true), 0);\r\n const visibleItemsHeight = buffer.reduce((summ, item) => summ + (rowHeight ? rowHeight : item.element.outerHeight(true)), 0);\r\n\r\n // Sinlarly, the calculation of the paddings (top & bottom) can certanly be optimizez\r\n let topPaddingHeight = 0, topCount = 0;\r\n topPadding.cache.forEach(item => {\r\n if(item.index < buffer.first) {\r\n topPaddingHeight += item.height; // outerHeight(true) is actually stored in this data member\r\n topCount++;\r\n }\r\n });\r\n\r\n let bottomPaddingHeight = 0, bottomCount = 0;\r\n bottomPadding.cache.forEach(item => {\r\n if(item.index >= buffer.next) {\r\n bottomPaddingHeight += item.height; // outerHeight(true) is actually stored in this data member\r\n bottomCount++;\r\n }\r\n });\r\n\r\n const totalHeight = visibleItemsHeight + topPaddingHeight + bottomPaddingHeight;\r\n const averageItemHeight = totalHeight / (topCount + bottomCount + buffer.length);\r\n\r\n // average heights calculation, items that have never been reached\r\n let adjustTopPadding = buffer.minIndexUser !== null && buffer.minIndex > buffer.minIndexUser;\r\n let adjustBottomPadding = buffer.maxIndexUser !== null && buffer.maxIndex < buffer.maxIndexUser;\r\n let topPaddingHeightAdd = adjustTopPadding ? (buffer.minIndex - buffer.minIndexUser) * averageItemHeight : 0;\r\n let bottomPaddingHeightAdd = adjustBottomPadding ? (buffer.maxIndexUser - buffer.maxIndex) * averageItemHeight : 0;\r\n\r\n // paddings combine adjustment\r\n topPadding.height(topPaddingHeight + topPaddingHeightAdd);\r\n bottomPadding.height(bottomPaddingHeight + bottomPaddingHeightAdd);\r\n },\r\n\r\n onAfterMinIndexSet(topPaddingHeightOld) {\r\n // additional scrollTop adjustment in case of datasource.minIndex external set\r\n if (buffer.minIndexUser !== null && buffer.minIndex > buffer.minIndexUser) {\r\n let diff = topPadding.height() - topPaddingHeightOld;\r\n viewport.scrollTop(viewport.scrollTop() + diff);\r\n while((diff -= viewport.scrollTop()) > 0) {\r\n bottomPadding.height(bottomPadding.height() + diff);\r\n viewport.scrollTop(viewport.scrollTop() + diff);\r\n }\r\n }\r\n },\r\n\r\n onAfterPrepend(updates) {\r\n if (!updates.prepended.length)\r\n return;\r\n const height = buffer.effectiveHeight(updates.prepended);\r\n const paddingHeight = topPadding.height() - height;\r\n if (paddingHeight >= 0) {\r\n topPadding.height(paddingHeight);\r\n }\r\n else {\r\n topPadding.height(0);\r\n viewport.scrollTop(viewport.scrollTop() - paddingHeight);\r\n }\r\n },\r\n\r\n resetTopPadding() {\r\n topPadding.height(0);\r\n topPadding.cache.clear();\r\n },\r\n\r\n resetBottomPadding() {\r\n bottomPadding.height(0);\r\n bottomPadding.cache.clear();\r\n },\r\n\r\n removeCacheItem(item, isTop) {\r\n topPadding.cache.remove(item, isTop);\r\n bottomPadding.cache.remove(item, isTop);\r\n },\r\n\r\n removeItem(item) {\r\n this.removeCacheItem(item);\r\n return buffer.remove(item);\r\n }\r\n });\r\n\r\n return viewport;\r\n}\r\n","class Adapter {\r\n\r\n constructor($scope, $parse, $attr, viewport, buffer, doAdjust, reload) {\r\n this.$parse = $parse;\r\n this.$attr = $attr;\r\n this.viewport = viewport;\r\n this.buffer = buffer;\r\n\r\n this.doAdjust = doAdjust;\r\n this.reload = reload;\r\n\r\n this.isLoading = false;\r\n this.disabled = false;\r\n\r\n const viewportScope = viewport.getScope();\r\n this.startScope = viewportScope.$parent ? viewportScope : $scope;\r\n\r\n this.publicContext = {};\r\n this.assignAdapter($attr.adapter);\r\n this.generatePublicContext();\r\n }\r\n\r\n assignAdapter(adapterAttr) {\r\n if (!adapterAttr || !(adapterAttr = adapterAttr.replace(/^\\s+|\\s+$/gm, ''))) {\r\n return;\r\n }\r\n let adapterOnScope;\r\n\r\n try {\r\n this.$parse(adapterAttr).assign(this.startScope, {});\r\n adapterOnScope = this.$parse(adapterAttr)(this.startScope);\r\n }\r\n catch (error) {\r\n error.message = `Angular ui-scroll Adapter assignment exception.\\n` +\r\n `Can't parse \"${adapterAttr}\" expression.\\n` +\r\n error.message;\r\n throw error;\r\n }\r\n\r\n angular.extend(adapterOnScope, this.publicContext);\r\n this.publicContext = adapterOnScope;\r\n }\r\n\r\n generatePublicContext() {\r\n // these methods will be accessible out of ui-scroll via user defined adapter\r\n const publicMethods = ['reload', 'applyUpdates', 'append', 'prepend', 'isBOF', 'isEOF', 'isEmpty'];\r\n for (let i = publicMethods.length - 1; i >= 0; i--) {\r\n this.publicContext[publicMethods[i]] = this[publicMethods[i]].bind(this);\r\n }\r\n\r\n // these read-only props will be accessible out of ui-scroll via user defined adapter\r\n const publicProps = ['isLoading', 'topVisible', 'topVisibleElement', 'topVisibleScope', 'bottomVisible', 'bottomVisibleElement', 'bottomVisibleScope'];\r\n for (let i = publicProps.length - 1; i >= 0; i--) {\r\n let property, attr = this.$attr[publicProps[i]];\r\n Object.defineProperty(this, publicProps[i], {\r\n get: () => property,\r\n set: (value) => {\r\n property = value;\r\n this.publicContext[publicProps[i]] = value;\r\n if (attr) {\r\n this.$parse(attr).assign(this.startScope, value);\r\n }\r\n }\r\n });\r\n }\r\n\r\n // non-read-only public property\r\n Object.defineProperty(this.publicContext, 'disabled', {\r\n get: () => this.disabled,\r\n set: (value) => (!(this.disabled = value)) ? this.doAdjust() : null\r\n });\r\n }\r\n\r\n loading(value) {\r\n this.isLoading = value;\r\n }\r\n\r\n isBOF() {\r\n return this.buffer.bof;\r\n }\r\n\r\n isEOF() {\r\n return this.buffer.eof;\r\n }\r\n\r\n isEmpty() {\r\n return !this.buffer.length;\r\n }\r\n\r\n append(newItems) {\r\n this.buffer.append(newItems);\r\n this.doAdjust();\r\n this.viewport.clipTop();\r\n this.viewport.clipBottom();\r\n }\r\n\r\n prepend(newItems) {\r\n this.buffer.prepend(newItems);\r\n this.doAdjust();\r\n this.viewport.clipTop();\r\n this.viewport.clipBottom();\r\n }\r\n\r\n applyUpdates(arg1, arg2) {\r\n if (typeof arg1 === 'function') {\r\n this.applyUpdatesFunc(arg1);\r\n } else {\r\n this.applyUpdatesIndex(arg1, arg2);\r\n }\r\n this.doAdjust();\r\n }\r\n\r\n applyUpdatesFunc(cb) {\r\n this.buffer.slice(0).forEach((wrapper) => {\r\n // we need to do it on the buffer clone, because buffer content\r\n // may change as we iterate through\r\n this.applyUpdate(wrapper, cb(wrapper.item, wrapper.scope, wrapper.element));\r\n });\r\n }\r\n\r\n applyUpdatesIndex(index, newItems) {\r\n if (index % 1 !== 0) {\r\n throw new Error('applyUpdates - ' + index + ' is not a valid index (should be an integer)');\r\n }\r\n const _index = index - this.buffer.first;\r\n\r\n // apply updates only within buffer\r\n if (_index >= 0 && _index < this.buffer.length) {\r\n this.applyUpdate(this.buffer[_index], newItems);\r\n }\r\n // out-of-buffer case: deletion may affect Paddings\r\n else if(index >= this.buffer.getAbsMinIndex() && index <= this.buffer.getAbsMaxIndex()) {\r\n if(angular.isArray(newItems) && !newItems.length) {\r\n this.viewport.removeCacheItem(index, index === this.buffer.minIndex);\r\n if(index === this.buffer.getAbsMinIndex()) {\r\n this.buffer.incrementMinIndex();\r\n }\r\n else {\r\n this.buffer.decrementMaxIndex();\r\n }\r\n }\r\n }\r\n }\r\n\r\n applyUpdate(wrapper, newItems) {\r\n if (!angular.isArray(newItems)) {\r\n return;\r\n }\r\n let position = this.buffer.indexOf(wrapper);\r\n if (!newItems.reverse().some(newItem => newItem === wrapper.item)) {\r\n wrapper.op = 'remove';\r\n if(position === 0 && !newItems.length) {\r\n wrapper._op = 'isTop'; // to catch \"first\" edge case on remove\r\n }\r\n }\r\n newItems.forEach((newItem) => {\r\n if (newItem === wrapper.item) {\r\n position--;\r\n } else {\r\n // 3 parameter (isTop) is to catch \"first\" edge case on insert\r\n this.buffer.insert(position + 1, newItem, position === -1);\r\n }\r\n });\r\n }\r\n\r\n calculateProperties() {\r\n let rowTop = null, topHeight = 0;\r\n let topDone = false, bottomDone = false;\r\n const length = this.buffer.length;\r\n\r\n for (let i = 0; i < length; i++) {\r\n const item = this.buffer[i];\r\n const itemTop = item.element.offset().top;\r\n\r\n if (rowTop !== itemTop) { // a new row condition\r\n const itemHeight = item.element.outerHeight(true);\r\n const top = this.viewport.topDataPos() + topHeight + itemHeight;\r\n\r\n if (!topDone && top > this.viewport.topVisiblePos()) {\r\n topDone = true;\r\n this['topVisible'] = item.item;\r\n this['topVisibleElement'] = item.element;\r\n this['topVisibleScope'] = item.scope;\r\n }\r\n if (!bottomDone && (top >= this.viewport.bottomVisiblePos() || (i === length - 1 && this.isEOF()))) {\r\n bottomDone = true;\r\n this['bottomVisible'] = item.item;\r\n this['bottomVisibleElement'] = item.element;\r\n this['bottomVisibleScope'] = item.scope;\r\n }\r\n topHeight += itemHeight;\r\n }\r\n rowTop = itemTop;\r\n\r\n if (topDone && bottomDone) {\r\n break;\r\n }\r\n }\r\n }\r\n\r\n}\r\n\r\nexport default Adapter;\r\n","import JQLiteExtras from './modules/jqLiteExtras';\nimport ElementRoutines from './modules/elementRoutines.js';\nimport ScrollBuffer from './modules/buffer.js';\nimport Viewport from './modules/viewport.js';\nimport Adapter from './modules/adapter.js';\n\nangular.module('ui.scroll', [])\n\n .constant('JQLiteExtras', JQLiteExtras)\n .run(['JQLiteExtras', (JQLiteExtras) => {\n !(angular.element.fn && angular.element.fn.jquery) ? new JQLiteExtras().registerFor(angular.element) : null;\n //!window.jQuery ? (new JQLiteExtras()).registerFor(angular.element) : null;\n ElementRoutines.addCSSRules();\n }])\n\n .directive('uiScrollViewport', function () {\n return {\n restrict: 'A',\n controller: [\n '$scope',\n '$element',\n function (scope, element) {\n this.container = element;\n this.viewport = element;\n this.scope = scope;\n\n angular.forEach(element.children(), child => {\n if (child.tagName.toLowerCase() === 'tbody') {\n this.viewport = angular.element(child);\n }\n });\n\n return this;\n }\n ]\n };\n })\n\n .directive('uiScroll', [\n '$log',\n '$injector',\n '$rootScope',\n '$timeout',\n '$interval',\n '$q',\n '$parse',\n function (console, $injector, $rootScope, $timeout, $interval, $q, $parse) {\n\n return {\n require: ['?^uiScrollViewport'],\n restrict: 'A',\n transclude: 'element',\n priority: 1000,\n terminal: true,\n link: link\n };\n\n function link($scope, element, $attr, controllers, linker) {\n const match = $attr.uiScroll.match(/^\\s*(\\w+)\\s+in\\s+([(\\w|\\$)\\.]+)\\s*$/);\n if (!match) {\n throw new Error('Expected uiScroll in form of \\'_item_ in _datasource_\\' but got \\'' + $attr.uiScroll + '\\'');\n }\n\n function parseNumber(value, defaultValue, isFloat) {\n if (!isFloat) {\n value = value === null ? defaultValue : Math.floor(value);\n }\n return isNaN(value) ? defaultValue : value;\n }\n\n function parseNumericAttr(value, defaultValue, isFloat) {\n const result = $parse(value)($scope);\n return parseNumber(result, defaultValue, isFloat);\n }\n\n const BUFFER_MIN = 3; // Minimum size of the data source request\n const BUFFER_DEFAULT = 10; // Default datasource request size\n const PADDING_MIN = 0.3; // Mininum # of rows in the padding area\n const PADDING_DEFAULT = 0.5; // Default # of rows in the padding area\n const START_INDEX_DEFAULT = 1; // Default start index when requestng the first data block\n const MAX_VIEWPORT_DELAY = 500; // Max time wait (ms) to get the viewport with an height>0\n const VIEWPORT_POLLING_INTERVAL = 50; // Interval used to check the initial viewport height\n\n let datasource = null;\n const itemName = match[1]; // Name of the index variable to publish\n const datasourceName = match[2]; // Name of the datasource to request the rows from\n const viewportController = controllers[0]; // ViewportController, as specified in the require option (http://websystique.com/angularjs/angularjs-custom-directives-controllers-require-option-guide/)\n const bufferSize = Math.max(BUFFER_MIN, parseNumericAttr($attr.bufferSize, BUFFER_DEFAULT)); \n const padding = Math.max(PADDING_MIN, parseNumericAttr($attr.padding, PADDING_DEFAULT, true));\n let startIndex = parseNumericAttr($attr.startIndex, START_INDEX_DEFAULT);\n\n // PHIL: Provide a fixed row height\n // \n const rowHeight = parseNumericAttr($attr.rowHeight, null, false);\n\n // PHIL: Read the visibility watch option, true by default\n const allowVisibilityWatch = $attr.allowVisibilityWatch!=='false';\n\n // Revision IDs\n // \n let ridActual = 0; // current data revision id\n let pending = [];\n\n const elementRoutines = new ElementRoutines($injector, $q);\n const buffer = new ScrollBuffer(elementRoutines, bufferSize, startIndex, rowHeight);\n const viewport = new Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding, rowHeight);\n const adapter = new Adapter($scope, $parse, $attr, viewport, buffer, doAdjust, reload);\n\n if (viewportController) {\n viewportController.adapter = adapter;\n }\n\n const isDatasourceValid = () =>\n Object.prototype.toString.call(datasource) === '[object Object]' && typeof datasource.get === 'function';\n\n datasource = $parse(datasourceName)($scope); // try to get datasource on scope\n if (!isDatasourceValid()) {\n datasource = $injector.get(datasourceName); // try to inject datasource as service\n if (!isDatasourceValid()) {\n throw new Error(datasourceName + ' is not a valid datasource');\n }\n }\n\n let onRenderHandlers = [];\n function onRenderHandlersRunner() {\n onRenderHandlers.forEach(handler => handler.run());\n onRenderHandlers = [];\n }\n function persistDatasourceIndex(datasource, propName) {\n let getter;\n // need to postpone min/maxIndexUser processing if the view is empty\n if(angular.isNumber(datasource[propName])) {\n getter = datasource[propName];\n if(angular.isNumber(getter)) {\n onRenderHandlers = onRenderHandlers.filter(handler => handler.id !== propName);\n onRenderHandlers.push({\n id: propName,\n run: () => datasource[propName] = getter\n });\n }\n }\n }\n\n function defineDatasourceIndex(datasource, propName, propUserName) {\n const descriptor = Object.getOwnPropertyDescriptor(datasource, propName);\n if (descriptor && (descriptor.set || descriptor.get)) {\n return;\n }\n let getter;\n persistDatasourceIndex(datasource, propName);\n Object.defineProperty(datasource, propName, {\n set: (value) => {\n getter = value;\n if(pending.length && !buffer.length) {\n persistDatasourceIndex(datasource, propName);\n return;\n }\n buffer[propUserName] = value;\n const topPaddingHeightOld = viewport.topDataPos();\n viewport.adjustPaddings();\n if (propName === 'minIndex') {\n viewport.onAfterMinIndexSet(topPaddingHeightOld);\n }\n },\n get: () => getter\n });\n }\n\n defineDatasourceIndex(datasource, 'minIndex', 'minIndexUser');\n defineDatasourceIndex(datasource, 'maxIndex', 'maxIndexUser');\n\n const fetchNext = (datasource.get.length !== 2) ?\n (success) => datasource.get(buffer.next, bufferSize, success) :\n (success) => {\n datasource.get({\n index: buffer.next,\n append: buffer.length ? buffer[buffer.length - 1].item : void 0,\n count: bufferSize\n }, success);\n };\n\n const fetchPrevious = (datasource.get.length !== 2) ?\n (success) => datasource.get(buffer.first - bufferSize, bufferSize, success) :\n (success) => {\n datasource.get({\n index: buffer.first - bufferSize,\n prepend: buffer.length ? buffer[0].item : void 0,\n count: bufferSize\n }, success);\n };\n\n const initialize = () => {\n let tryCount = 0;\n if(!viewport.applyContainerStyle()) {\n const timer = $interval(() => {\n tryCount++;\n if(viewport.applyContainerStyle()) {\n $interval.cancel(timer);\n doAdjust();\n }\n if(tryCount * VIEWPORT_POLLING_INTERVAL >= MAX_VIEWPORT_DELAY) {\n $interval.cancel(timer);\n throw Error(`ui-scroll directive requires a viewport with non-zero height in ${MAX_VIEWPORT_DELAY}ms`);\n }\n }, VIEWPORT_POLLING_INTERVAL);\n }\n else {\n doAdjust();\n }\n };\n\n /**\n * Build padding elements\n *\n * Calling linker is the only way I found to get access to the tag name of the template\n * to prevent the directive scope from pollution a new scope is created and destroyed\n * right after the builder creation is completed\n */\n linker((clone, scope) => {\n viewport.createPaddingElements(clone[0]);\n // we do not include the clone in the DOM. It means that the nested directives will not\n // be able to reach the parent directives, but in this case it is intentional because we\n // created the clone to access the template tag name\n scope.$destroy();\n clone.remove();\n });\n\n $scope.$on('$destroy', () => {\n unbindEvents();\n viewport.unbind('mousewheel', wheelHandler);\n });\n\n viewport.bind('mousewheel', wheelHandler);\n\n initialize();\n\n /* Private function definitions */\n\n function isInvalid(rid) {\n return (rid && rid !== ridActual) || $scope.$$destroyed;\n }\n\n function bindEvents() {\n viewport.bind('resize', resizeAndScrollHandler);\n viewport.bind('scroll', resizeAndScrollHandler);\n }\n\n function unbindEvents() {\n viewport.unbind('resize', resizeAndScrollHandler);\n viewport.unbind('scroll', resizeAndScrollHandler);\n }\n\n function reload() {\n viewport.resetTopPadding();\n viewport.resetBottomPadding();\n if (arguments.length) {\n startIndex = parseNumber(arguments[0], START_INDEX_DEFAULT, false);\n }\n buffer.reset(startIndex);\n persistDatasourceIndex(datasource, 'minIndex');\n persistDatasourceIndex(datasource, 'maxIndex');\n doAdjust();\n }\n\n function isElementVisible(wrapper) {\n return (rowHeight || wrapper.element.height()) && wrapper.element[0].offsetParent;\n }\n\n function visibilityWatcher(wrapper) {\n if (isElementVisible(wrapper)) {\n buffer.forEach((item) => {\n if (typeof item.unregisterVisibilityWatcher === 'function') {\n item.unregisterVisibilityWatcher();\n delete item.unregisterVisibilityWatcher;\n }\n });\n if (!pending.length) {\n $timeout(() => doAdjust());\n }\n }\n }\n\n function insertWrapperContent(wrapper, insertAfter) {\n createElement(wrapper, insertAfter, viewport.insertElement);\n if (allowVisibilityWatch && !isElementVisible(wrapper)) {\n wrapper.unregisterVisibilityWatcher = wrapper.scope.$watch(() => visibilityWatcher(wrapper));\n }\n if (allowVisibilityWatch) {\n elementRoutines.hideElement(wrapper); // hide inserted elements before data binding\n }\n }\n\n function createElement(wrapper, insertAfter, insertElement) {\n let promises = null;\n const sibling = (insertAfter > 0) ? buffer[insertAfter - 1].element : undefined;\n linker((clone, scope) => {\n promises = insertElement(clone, sibling);\n wrapper.element = clone;\n wrapper.scope = scope;\n scope[itemName] = wrapper.item;\n });\n // ui-scroll-grid apply\n if (adapter.transform) {\n const tdInitializer = wrapper.scope.uiScrollTdInitializer;\n if (tdInitializer && tdInitializer.linking) {\n adapter.transform(wrapper.scope, wrapper.element);\n } else {\n wrapper.scope.uiScrollTdInitializer = {\n onLink: () => adapter.transform(wrapper.scope, wrapper.element),\n scope: wrapper.scope\n };\n }\n }\n return promises;\n }\n\n function updateDOM() {\n let promises = [];\n const toBePrepended = [];\n const toBeRemoved = [];\n const inserted = [];\n\n buffer.forEach((wrapper, i) => {\n switch (wrapper.op) {\n case 'prepend':\n toBePrepended.unshift(wrapper);\n break;\n case 'append':\n insertWrapperContent(wrapper, i);\n wrapper.op = 'none';\n inserted.push(wrapper);\n break;\n case 'insert':\n promises = promises.concat(createElement(wrapper, i, viewport.insertElementAnimated));\n wrapper.op = 'none';\n inserted.push(wrapper);\n break;\n case 'remove':\n toBeRemoved.push(wrapper);\n }\n });\n\n toBeRemoved.forEach((wrapper) => promises = promises.concat(viewport.removeItem(wrapper)));\n\n if (toBePrepended.length)\n toBePrepended.forEach((wrapper) => {\n insertWrapperContent(wrapper);\n wrapper.op = 'none';\n });\n\n buffer.forEach((item, i) => item.scope.$index = buffer.first + i);\n\n return {\n prepended: toBePrepended,\n removed: toBeRemoved,\n inserted: inserted,\n animated: promises\n };\n\n }\n\n // Adjust the viewport paddings\n // \n function updatePaddings(rid, updates) {\n // schedule another doAdjust after animation completion\n if (updates.animated.length) {\n $q.all(updates.animated).then(() => {\n viewport.adjustPaddings();\n doAdjust(rid);\n });\n } else {\n viewport.adjustPaddings();\n }\n }\n\n function enqueueFetch(rid, updates) {\n if (viewport.shouldLoadBottom()) {\n if (!updates || buffer.effectiveHeight(updates.inserted) > 0) {\n // this means that at least one item appended in the last batch has height > 0\n if (pending.push(true) === 1) {\n adapter.loading(true);\n fetch(rid);\n }\n }\n } else if (viewport.shouldLoadTop()) {\n if ((!updates || buffer.effectiveHeight(updates.prepended) > 0) || pending[0]) {\n // this means that at least one item appended in the last batch has height > 0\n // pending[0] = true means that previous fetch was appending. We need to force at least one prepend\n // BTW there will always be at least 1 element in the pending array because bottom is fetched first\n if (pending.push(false) === 1) {\n adapter.loading(true);\n fetch(rid);\n }\n }\n }\n }\n\n function processUpdates() {\n const updates = updateDOM();\n\n // We need the item bindings to be processed before we can do adjustments\n !$scope.$$phase && !$rootScope.$$phase && $scope.$digest();\n\n if (allowVisibilityWatch) {\n updates.inserted.forEach(w => elementRoutines.showElement(w));\n updates.prepended.forEach(w => elementRoutines.showElement(w));\n }\n\n return updates;\n }\n\n function doAdjust(rid) {\n if (!rid) { // dismiss pending requests\n pending = [];\n rid = ++ridActual;\n }\n\n const updates = processUpdates();\n\n if (isInvalid(rid)) {\n return;\n }\n\n updatePaddings(rid, updates);\n enqueueFetch(rid);\n\n if (!pending.length) {\n adapter.calculateProperties();\n }\n }\n\n function doAdjustAfterFetch(rid) {\n const updates = processUpdates();\n\n viewport.onAfterPrepend(updates);\n\n if (isInvalid(rid)) {\n return;\n }\n\n updatePaddings(rid, updates);\n onRenderHandlersRunner();\n enqueueFetch(rid, updates);\n pending.shift();\n\n if (pending.length)\n fetch(rid);\n else {\n adapter.loading(false);\n bindEvents();\n adapter.calculateProperties();\n }\n }\n\n function fetch(rid) {\n if (pending[0]) {// scrolling down\n if (buffer.length && !viewport.shouldLoadBottom()) {\n doAdjustAfterFetch(rid);\n } else {\n fetchNext((result) => {\n if (isInvalid(rid)) {\n return;\n }\n\n if (result.length < bufferSize) {\n buffer.eof = true;\n }\n\n if (result.length > 0) {\n viewport.clipTop();\n buffer.append(result);\n }\n\n doAdjustAfterFetch(rid);\n });\n }\n } else { // scrolling up\n if (buffer.length && !viewport.shouldLoadTop()) {\n doAdjustAfterFetch(rid);\n } else {\n fetchPrevious((result) => {\n if (isInvalid(rid)) {\n return;\n }\n\n if (result.length < bufferSize) {\n buffer.bof = true;\n // log 'bof is reached'\n }\n\n if (result.length > 0) {\n if (buffer.length) {\n viewport.clipBottom();\n }\n buffer.prepend(result);\n }\n\n doAdjustAfterFetch(rid);\n });\n }\n }\n }\n\n function resizeAndScrollHandler() {\n if (!$rootScope.$$phase && !adapter.isLoading && !adapter.disabled) {\n\n enqueueFetch(ridActual);\n\n if (pending.length) {\n unbindEvents();\n } else {\n adapter.calculateProperties();\n if(!rowHeight) {\n // The digest is forced to calculate the height, which is not necessary when the height is knowm\n !$scope.$$phase && $scope.$digest();\n }\n }\n }\n }\n\n function wheelHandler(event) {\n if (!adapter.disabled) {\n const scrollTop = viewport[0].scrollTop;\n const yMax = viewport[0].scrollHeight - viewport[0].clientHeight;\n\n if ((scrollTop === 0 && !buffer.bof) || (scrollTop === yMax && !buffer.eof)) {\n event.preventDefault();\n }\n }\n }\n }\n\n }\n ]);\n"],"sourceRoot":""} \ No newline at end of file diff --git a/dist/ui-scroll.min.js b/dist/ui-scroll.min.js index 42f037d6..9a30d0e3 100644 --- a/dist/ui-scroll.min.js +++ b/dist/ui-scroll.min.js @@ -1,2 +1,2 @@ -!function(n){var r={};function i(e){if(r[e])return r[e].exports;var t=r[e]={i:e,l:!1,exports:{}};return n[e].call(t.exports,t,t.exports,i),t.l=!0,t.exports}i.m=n,i.c=r,i.d=function(e,t,n){i.o(e,t)||Object.defineProperty(e,t,{enumerable:!0,get:n})},i.r=function(e){"undefined"!=typeof Symbol&&Symbol.toStringTag&&Object.defineProperty(e,Symbol.toStringTag,{value:"Module"}),Object.defineProperty(e,"__esModule",{value:!0})},i.t=function(t,e){if(1&e&&(t=i(t)),8&e)return t;if(4&e&&"object"==typeof t&&t&&t.__esModule)return t;var n=Object.create(null);if(i.r(n),Object.defineProperty(n,"default",{enumerable:!0,value:t}),2&e&&"string"!=typeof t)for(var r in t)i.d(n,r,function(e){return t[e]}.bind(null,r));return n},i.n=function(e){var t=e&&e.__esModule?function(){return e.default}:function(){return e};return i.d(t,"a",t),t},i.o=function(e,t){return Object.prototype.hasOwnProperty.call(e,t)},i.p="",i(i.s=1)}([,function(e,t,n){"use strict";function g(e,t){return function(e){if(Array.isArray(e))return e}(e)||function(e,t){var n=[],r=!0,i=!1,o=void 0;try{for(var a,s=e[Symbol.iterator]();!(r=(a=s.next()).done)&&(n.push(a.value),!t||n.length!==t);r=!0);}catch(e){i=!0,o=e}finally{try{r||null==s.return||s.return()}finally{if(i)throw o}}return n}(e,t)||function(){throw new TypeError("Invalid attempt to destructure non-iterable instance")}()}function i(e,t){for(var n=0;ni.minIndexUser)return void i.minIndexUser++;i.minIndex===i.minIndexUser&&i.minIndexUser++}i.minIndex++},decrementMaxIndex:function(){null!==i.maxIndexUser&&i.maxIndex<=i.maxIndexUser&&i.maxIndexUser--,i.maxIndex--},getAbsMinIndex:function(){return null!==i.minIndexUser?Math.min(i.minIndexUser,i.minIndex):i.minIndex},getAbsMaxIndex:function(){return null!==i.maxIndexUser?Math.max(i.maxIndexUser,i.maxIndex):i.maxIndex},effectiveHeight:function(e){if(!e.length)return 0;var t=Number.MAX_VALUE,n=Number.NEGATIVE_INFINITY;return e.forEach(function(e){e.element[0].offsetParent&&(t=Math.min(t,e.element.offset().top),n=Math.max(n,e.element.offset().top+e.element.outerHeight(!0)))}),Math.max(0,n-t)}}),i.reset(t),i}function u(e,t){if(!(e instanceof t))throw new TypeError("Cannot call a class as a function")}function l(e,t){for(var n=0;nt.index?1:0})}},{key:"remove",value:function(e,t){for(var n=e%1==0?e:e.scope.$index,r=e%1==0?t:"isTop"===e._op,i=this.length-1;0<=i;i--)if(this[i].index===n){this.splice(i,1);break}if(!r)for(var o=this.length-1;0<=o;o--)this[o].index>n&&this[o].index--}},{key:"clear",value:function(){this.length=0}}]),e}();function d(){var e=[];return e.push.apply(e,arguments),Object.setPrototypeOf(e,d.prototype),e}d.prototype=Object.create(Array.prototype),Object.getOwnPropertyNames(f.prototype).forEach(function(e){return d.prototype[e]=f.prototype[e]});var p=function(){function n(e,t){u(this,n),this.element=function(e){if(e.nodeType!==Node.ELEMENT_NODE)throw new Error("ui-scroll directive requires an Element node for templating the view");var t;switch(e.tagName.toLowerCase()){case"dl":throw new Error("ui-scroll directive does not support <".concat(e.tagName,"> as a repeating tag: ").concat(e.outerHTML));case"tr":t=angular.element("
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t=d.height()-e;for(o.scrollTop(o.scrollTop()+t);0<(t-=o.scrollTop());)h.height(h.height()+t),o.scrollTop(o.scrollTop()+t)}},onAfterPrepend:function(e){if(e.prepended.length){var t=c.effectiveHeight(e.prepended),n=d.height()-t;0<=n?d.height(n):(d.height(0),o.scrollTop(o.scrollTop()-n))}},resetTopPadding:function(){d.height(0),d.cache.clear()},resetBottomPadding:function(){h.height(0),h.cache.clear()},removeCacheItem:function(e,t){d.cache.remove(e,t),h.cache.remove(e,t)},removeItem:function(e){return this.removeCacheItem(e),c.remove(e)}}),o}function h(e,t){for(var n=0;n=this.buffer.getAbsMinIndex()&&e<=this.buffer.getAbsMaxIndex()&&angular.isArray(t)&&!t.length&&(this.viewport.removeCacheItem(e,e===this.buffer.minIndex),e===this.buffer.getAbsMinIndex()?this.buffer.incrementMinIndex():this.buffer.decrementMaxIndex())}},{key:"applyUpdate",value:function(t,e){var n=this;if(angular.isArray(e)){var r=this.buffer.indexOf(t);e.reverse().some(function(e){return e===t.item})||(t.op="remove",0!==r||e.length||(t._op="isTop")),e.forEach(function(e){e===t.item?r--:n.buffer.insert(r+1,e,-1===r)})}}},{key:"calculateProperties",value:function(){for(var e=null,t=0,n=!1,r=!1,i=this.buffer.length,o=0;othis.viewport.topVisiblePos()&&(n=!0,this.topVisible=a.item,this.topVisibleElement=a.element,this.topVisibleScope=a.scope),!r&&(l>=this.viewport.bottomVisiblePos()||o===i-1&&this.isEOF())&&(r=!0,this.bottomVisible=a.item,this.bottomVisibleElement=a.element,this.bottomVisibleScope=a.scope),t+=u}if(e=s,n&&r)break}}}])&&h(e.prototype,t),n&&h(e,n),u}();angular.module("ui.scroll",[]).constant("JQLiteExtras",r).run(["JQLiteExtras",function(e){(!angular.element.fn||!angular.element.fn.jquery)&&(new e).registerFor(angular.element),Y.addCSSRules()}]).directive("uiScrollViewport",function(){return{restrict:"A",controller:["$scope","$element",function(e,t){var n=this;return this.container=t,this.viewport=t,this.scope=e,angular.forEach(t.children(),function(e){"tbody"===e.tagName.toLowerCase()&&(n.viewport=angular.element(e))}),this}]}}).directive("uiScroll",["$log","$injector","$rootScope","$timeout","$interval","$q","$parse",function(e,F,R,W,q,z,X){return{require:["?^uiScrollViewport"],restrict:"A",transclude:"element",priority:1e3,terminal:!0,link:function(i,e,t,n,a){var r=t.uiScroll.match(/^\s*(\w+)\s+in\s+([(\w|\$)\.]+)\s*$/);if(!r)throw new Error("Expected uiScroll in form of '_item_ in _datasource_' but got '"+t.uiScroll+"'");function o(e,t,n){return n||(e=null===e?t:Math.floor(e)),isNaN(e)?t:e}function s(e,t,n){var r=X(e)(i);return o(r,t,n)}var u=null,l=r[1],c=r[2],f=n[0],d=Math.max(3,s(t.bufferSize,10)),h=Math.max(.3,s(t.padding,.5,!0)),p=s(t.startIndex,1),m=s(t.rowHeight,null,!1),g="false"!==t.allowVisibilityWatch,v=0,b=[],x=new Y(F,z),y=new J(x,d,p,m),w=new Q(x,y,e,f,R,h,m),I=new G(i,X,t,w,y,H,function(){w.resetTopPadding(),w.resetBottomPadding(),arguments.length&&(p=o(arguments[0],1,!1));y.reset(p),P(u,"minIndex"),P(u,"maxIndex"),H()});f&&(f.adapter=I);var E=function(){return"[object Object]"===Object.prototype.toString.call(u)&&"function"==typeof u.get};if(u=X(c)(i),!E()&&(u=F.get(c),!E()))throw new Error(c+" is not a valid datasource");var $=[];function P(e,t){var n;angular.isNumber(e[t])&&(n=e[t],angular.isNumber(n)&&($=$.filter(function(e){return e.id!==t})).push({id:t,run:function(){return e[t]=n}}))}function T(n,r,i){var o,e=Object.getOwnPropertyDescriptor(n,r);e&&(e.set||e.get)||(P(n,r),Object.defineProperty(n,r,{set:function(e){if(o=e,!b.length||y.length){y[i]=e;var t=w.topDataPos();w.adjustPaddings(),"minIndex"===r&&w.onAfterMinIndexSet(t)}else P(n,r)},get:function(){return o}}))}T(u,"minIndex","minIndexUser"),T(u,"maxIndex","maxIndexUser");var S=2!==u.get.length?function(e){return u.get(y.next,d,e)}:function(e){u.get({index:y.next,append:y.length?y[y.length-1].item:void 0,count:d},e)},k=2!==u.get.length?function(e){return u.get(y.first-d,d,e)}:function(e){u.get({index:y.first-d,prepend:y.length?y[0].item:void 0,count:d},e)};function A(e){return e&&e!==v||i.$$destroyed}function O(){w.unbind("resize",B),w.unbind("scroll",B)}function j(e){return(m||e.element.height())&&e.element[0].offsetParent}function U(e,t){M(e,t,w.insertElement),g&&!j(e)&&(e.unregisterVisibilityWatcher=e.scope.$watch(function(){j(e)&&(y.forEach(function(e){"function"==typeof e.unregisterVisibilityWatcher&&(e.unregisterVisibilityWatcher(),delete e.unregisterVisibilityWatcher)}),b.length||W(function(){return H()}))})),g&&x.hideElement(e)}function M(n,e,r){var i=null,o=0 obj && obj.document && obj.location && obj.alert && obj.setInterval;\r\n\r\n function scrollTo(self, direction, value) {\r\n let elem = self[0];\r\n let [method, prop, preserve] = {\r\n top: [\r\n 'scrollTop',\r\n 'pageYOffset',\r\n 'scrollLeft'\r\n ],\r\n left: [\r\n 'scrollLeft',\r\n 'pageXOffset',\r\n 'scrollTop'\r\n ]\r\n }[direction];\r\n\r\n const isValueDefined = typeof value !== 'undefined';\r\n if (isWindow(elem)) {\r\n if (isValueDefined) {\r\n return elem.scrollTo(self[preserve].call(self), value);\r\n }\r\n return (prop in elem) ? elem[prop] : elem.document.documentElement[method];\r\n } else {\r\n if (isValueDefined) {\r\n elem[method] = value;\r\n }\r\n return elem[method];\r\n }\r\n }\r\n\r\n if (window.getComputedStyle) {\r\n getStyle = (elem) => window.getComputedStyle(elem, null);\r\n convertToPx = (elem, value) => parseFloat(value);\r\n } else {\r\n getStyle = (elem) => elem.currentStyle;\r\n convertToPx = (elem, value) => {\r\n let left, result, rs, rsLeft, style;\r\n let core_pnum = /[+-]?(?:\\d*\\.|)\\d+(?:[eE][+-]?\\d+|)/.source;\r\n let rnumnonpx = new RegExp('^(' + core_pnum + ')(?!px)[a-z%]+$', 'i');\r\n\r\n if (!rnumnonpx.test(value)) {\r\n return parseFloat(value);\r\n }\r\n\r\n // ported from JQuery\r\n style = elem.style;\r\n left = style.left;\r\n rs = elem.runtimeStyle;\r\n rsLeft = rs && rs.left;\r\n if (rs) {\r\n rs.left = style.left;\r\n }\r\n // put in the new values to get a computed style out\r\n style.left = value;\r\n result = style.pixelLeft;\r\n style.left = left;\r\n if (rsLeft) {\r\n rs.left = rsLeft;\r\n }\r\n return result;\r\n };\r\n }\r\n\r\n function getMeasurements(elem, measure) {\r\n let base, borderA, borderB, computedMarginA, computedMarginB, computedStyle, dirA, dirB, marginA, marginB, paddingA, paddingB;\r\n\r\n if (isWindow(elem)) {\r\n base = document.documentElement[{height: 'clientHeight', width: 'clientWidth'}[measure]];\r\n\r\n return {\r\n base: base,\r\n padding: 0,\r\n border: 0,\r\n margin: 0\r\n };\r\n }\r\n\r\n // Start with offset property\r\n [\r\n base,\r\n dirA,\r\n dirB\r\n ] = {\r\n width: [\r\n elem.offsetWidth,\r\n 'Left',\r\n 'Right'\r\n ],\r\n height: [\r\n elem.offsetHeight,\r\n 'Top',\r\n 'Bottom'\r\n ]\r\n }[measure];\r\n\r\n computedStyle = getStyle(elem);\r\n paddingA = convertToPx(elem, computedStyle['padding' + dirA]) || 0;\r\n paddingB = convertToPx(elem, computedStyle['padding' + dirB]) || 0;\r\n borderA = convertToPx(elem, computedStyle['border' + dirA + 'Width']) || 0;\r\n borderB = convertToPx(elem, computedStyle['border' + dirB + 'Width']) || 0;\r\n computedMarginA = computedStyle['margin' + dirA];\r\n computedMarginB = computedStyle['margin' + dirB];\r\n\r\n // I do not care for width for now, so this hack is irrelevant\r\n // if ( !supportsPercentMargin )\r\n // computedMarginA = hackPercentMargin( elem, computedStyle, computedMarginA )\r\n // computedMarginB = hackPercentMargin( elem, computedStyle, computedMarginB )\r\n marginA = convertToPx(elem, computedMarginA) || 0;\r\n marginB = convertToPx(elem, computedMarginB) || 0;\r\n\r\n return {\r\n base: base,\r\n padding: paddingA + paddingB,\r\n border: borderA + borderB,\r\n margin: marginA + marginB\r\n };\r\n }\r\n\r\n function getWidthHeight(elem, direction, measure) {\r\n let computedStyle, result;\r\n\r\n let measurements = getMeasurements(elem, direction);\r\n\r\n if (measurements.base > 0) {\r\n return {\r\n base: measurements.base - measurements.padding - measurements.border,\r\n outer: measurements.base,\r\n outerfull: measurements.base + measurements.margin\r\n }[measure];\r\n }\r\n\r\n // Fall back to computed then uncomputed css if necessary\r\n computedStyle = getStyle(elem);\r\n result = computedStyle[direction];\r\n\r\n if (result < 0 || result === null) {\r\n result = elem.style[direction] || 0;\r\n }\r\n\r\n // Normalize \"\", auto, and prepare for extra\r\n result = parseFloat(result) || 0;\r\n\r\n return {\r\n base: result - measurements.padding - measurements.border,\r\n outer: result,\r\n outerfull: result + measurements.padding + measurements.border + measurements.margin\r\n }[measure];\r\n }\r\n\r\n // define missing methods\r\n return angular.forEach({\r\n before(newElem) {\r\n var children, elem, i, j, parent, ref, self;\r\n self = this;\r\n elem = self[0];\r\n parent = self.parent();\r\n children = parent.contents();\r\n if (children[0] === elem) {\r\n return parent.prepend(newElem);\r\n } else {\r\n for (i = j = 1, ref = children.length - 1; 1 <= ref ? j <= ref : j >= ref; i = 1 <= ref ? ++j : --j) {\r\n if (children[i] === elem) {\r\n angular.element(children[i - 1]).after(newElem);\r\n return;\r\n }\r\n }\r\n throw new Error('invalid DOM structure ' + elem.outerHTML);\r\n }\r\n },\r\n height (value){\r\n var self;\r\n self = this;\r\n if (typeof value !== 'undefined') {\r\n if (angular.isNumber(value)) {\r\n value = value + 'px';\r\n }\r\n return css.call(self, 'height', value);\r\n } else {\r\n return getWidthHeight(this[0], 'height', 'base');\r\n }\r\n },\r\n outerHeight(option) {\r\n return getWidthHeight(this[0], 'height', option ? 'outerfull' : 'outer');\r\n },\r\n outerWidth(option) {\r\n return getWidthHeight(this[0], 'width', option ? 'outerfull' : 'outer');\r\n },\r\n\r\n /*\r\n The offset setter method is not implemented\r\n */\r\n offset(value) {\r\n let docElem, win;\r\n let self = this;\r\n let box = {\r\n top: 0,\r\n left: 0\r\n };\r\n let elem = self[0];\r\n let doc = elem && elem.ownerDocument;\r\n\r\n if (arguments.length) {\r\n if (value === undefined) {\r\n return self;\r\n }\r\n // TODO: implement setter\r\n throw new Error('offset setter method is not implemented');\r\n }\r\n\r\n if (!doc) {\r\n return;\r\n }\r\n\r\n docElem = doc.documentElement;\r\n\r\n // TODO: Make sure it's not a disconnected DOM node\r\n\r\n if (elem.getBoundingClientRect != null) {\r\n box = elem.getBoundingClientRect();\r\n }\r\n\r\n win = doc.defaultView || doc.parentWindow;\r\n\r\n return {\r\n top: box.top + (win.pageYOffset || docElem.scrollTop) - (docElem.clientTop || 0),\r\n left: box.left + (win.pageXOffset || docElem.scrollLeft) - (docElem.clientLeft || 0)\r\n };\r\n },\r\n scrollTop(value) {\r\n return scrollTo(this, 'top', value);\r\n },\r\n scrollLeft(value) {\r\n return scrollTo(this, 'left', value);\r\n }\r\n }, (value, key) => {\r\n if (!element.prototype[key]) {\r\n return element.prototype[key] = value;\r\n }\r\n });\r\n }\r\n\r\n}\r\n","const hideClassToken = 'ng-ui-scroll-hide';\r\n\r\nexport default class ElementRoutines {\r\n\r\n static addCSSRules() {\r\n const selector = '.' + hideClassToken;\r\n const rules = 'display: none';\r\n const sheet = document.styleSheets[0];\r\n let index;\r\n try {\r\n index = sheet.cssRules.length;\r\n } catch (err) {\r\n index = 0;\r\n }\r\n if('insertRule' in sheet) {\r\n sheet.insertRule(selector + '{' + rules + '}', index);\r\n }\r\n else if('addRule' in sheet) {\r\n sheet.addRule(selector, rules, index);\r\n }\r\n }\r\n\r\n constructor($injector, $q) {\r\n this.$animate = ($injector.has && $injector.has('$animate')) ? $injector.get('$animate') : null;\r\n this.isAngularVersionLessThen1_3 = angular.version.major === 1 && angular.version.minor < 3;\r\n this.$q = $q;\r\n }\r\n\r\n hideElement(wrapper) {\r\n wrapper.element.addClass(hideClassToken);\r\n }\r\n\r\n showElement(wrapper) {\r\n wrapper.element.removeClass(hideClassToken);\r\n }\r\n\r\n insertElement(newElement, previousElement) {\r\n previousElement.after(newElement);\r\n return [];\r\n }\r\n\r\n removeElement(wrapper) {\r\n wrapper.element.remove();\r\n wrapper.scope.$destroy();\r\n return [];\r\n }\r\n\r\n insertElementAnimated(newElement, previousElement) {\r\n if (!this.$animate) {\r\n return this.insertElement(newElement, previousElement);\r\n }\r\n\r\n if (this.isAngularVersionLessThen1_3) {\r\n const deferred = this.$q.defer();\r\n // no need for parent - previous element is never null\r\n this.$animate.enter(newElement, null, previousElement, () => deferred.resolve());\r\n\r\n return [deferred.promise];\r\n }\r\n\r\n // no need for parent - previous element is never null\r\n return [this.$animate.enter(newElement, null, previousElement)];\r\n }\r\n\r\n removeElementAnimated(wrapper) {\r\n if (!this.$animate) {\r\n return this.removeElement(wrapper);\r\n }\r\n\r\n if (this.isAngularVersionLessThen1_3) {\r\n const deferred = this.$q.defer();\r\n this.$animate.leave(wrapper.element, () => {\r\n wrapper.scope.$destroy();\r\n return deferred.resolve();\r\n });\r\n\r\n return [deferred.promise];\r\n }\r\n\r\n return [(this.$animate.leave(wrapper.element)).then(() => wrapper.scope.$destroy())];\r\n }\r\n}","export default function ScrollBuffer(elementRoutines, bufferSize, startIndex) {\r\n const buffer = Object.create(Array.prototype);\r\n\r\n angular.extend(buffer, {\r\n size: bufferSize,\r\n\r\n reset(startIndex) {\r\n buffer.remove(0, buffer.length);\r\n buffer.eof = false;\r\n buffer.bof = false;\r\n buffer.first = startIndex;\r\n buffer.next = startIndex;\r\n buffer.minIndex = startIndex;\r\n buffer.maxIndex = startIndex;\r\n buffer.minIndexUser = null;\r\n buffer.maxIndexUser = null;\r\n },\r\n\r\n append(items) {\r\n items.forEach((item) => {\r\n ++buffer.next;\r\n buffer.insert('append', item);\r\n });\r\n buffer.maxIndex = buffer.eof ? buffer.next - 1 : Math.max(buffer.next - 1, buffer.maxIndex);\r\n },\r\n\r\n prepend(items) {\r\n items.reverse().forEach((item) => {\r\n --buffer.first;\r\n buffer.insert('prepend', item);\r\n });\r\n buffer.minIndex = buffer.bof ? buffer.minIndex = buffer.first : Math.min(buffer.first, buffer.minIndex);\r\n },\r\n\r\n /**\r\n * inserts wrapped element in the buffer\r\n * the first argument is either operation keyword (see below) or a number for operation 'insert'\r\n * for insert the number is the index for the buffer element the new one have to be inserted after\r\n * operations: 'append', 'prepend', 'insert', 'remove', 'update', 'none'\r\n */\r\n insert(operation, item, isTop) {\r\n const wrapper = {\r\n item: item\r\n };\r\n\r\n if (operation % 1 === 0) {// it is an insert\r\n wrapper.op = 'insert';\r\n buffer.splice(operation, 0, wrapper);\r\n if(isTop) {\r\n buffer.first--;\r\n }\r\n else {\r\n buffer.next++;\r\n }\r\n } else {\r\n wrapper.op = operation;\r\n switch (operation) {\r\n case 'append':\r\n buffer.push(wrapper);\r\n break;\r\n case 'prepend':\r\n buffer.unshift(wrapper);\r\n break;\r\n }\r\n }\r\n },\r\n\r\n // removes elements from buffer\r\n remove(arg1, arg2) {\r\n if (angular.isNumber(arg1)) {\r\n // removes items from arg1 (including) through arg2 (excluding)\r\n for (let i = arg1; i < arg2; i++) {\r\n elementRoutines.removeElement(buffer[i]);\r\n }\r\n return buffer.splice(arg1, arg2 - arg1);\r\n }\r\n // removes single item(wrapper) from the buffer\r\n buffer.splice(buffer.indexOf(arg1), 1);\r\n if(arg1._op === 'isTop' && buffer.first === this.getAbsMinIndex()) {\r\n this.incrementMinIndex();\r\n }\r\n else {\r\n this.decrementMaxIndex();\r\n }\r\n if(arg1._op === 'isTop') {\r\n buffer.first++;\r\n }\r\n else {\r\n buffer.next--;\r\n }\r\n if(!buffer.length) {\r\n buffer.first = 1;\r\n buffer.next = 1;\r\n }\r\n\r\n return elementRoutines.removeElementAnimated(arg1);\r\n },\r\n\r\n incrementMinIndex() {\r\n if(buffer.minIndexUser !== null) {\r\n if(buffer.minIndex > buffer.minIndexUser) {\r\n buffer.minIndexUser++;\r\n return;\r\n }\r\n if(buffer.minIndex === buffer.minIndexUser) {\r\n buffer.minIndexUser++;\r\n }\r\n }\r\n buffer.minIndex++;\r\n },\r\n\r\n decrementMaxIndex() {\r\n if(buffer.maxIndexUser !== null && buffer.maxIndex <= buffer.maxIndexUser) {\r\n buffer.maxIndexUser--;\r\n }\r\n buffer.maxIndex--;\r\n },\r\n\r\n getAbsMinIndex() {\r\n if(buffer.minIndexUser !== null) {\r\n return Math.min(buffer.minIndexUser, buffer.minIndex);\r\n }\r\n return buffer.minIndex;\r\n },\r\n\r\n getAbsMaxIndex() {\r\n if(buffer.maxIndexUser !== null) {\r\n return Math.max(buffer.maxIndexUser, buffer.maxIndex);\r\n }\r\n return buffer.maxIndex;\r\n },\r\n\r\n effectiveHeight(elements) {\r\n if (!elements.length) {\r\n return 0;\r\n }\r\n let top = Number.MAX_VALUE;\r\n let bottom = Number.NEGATIVE_INFINITY;\r\n elements.forEach((wrapper) => {\r\n if (wrapper.element[0].offsetParent) {\r\n // element style is not display:none\r\n top = Math.min(top, wrapper.element.offset().top);\r\n bottom = Math.max(bottom, wrapper.element.offset().top + wrapper.element.outerHeight(true));\r\n }\r\n });\r\n return Math.max(0, bottom - top);\r\n }\r\n\r\n });\r\n\r\n buffer.reset(startIndex);\r\n\r\n return buffer;\r\n}\r\n","// Can't just extend the Array, due to Babel does not support built-in classes extending\r\n// This solution was taken from https://stackoverflow.com/questions/46897414/es6-class-extends-array-workaround-for-es5-babel-transpile\r\nclass CacheProto {\r\n add(item) {\r\n for (let i = this.length - 1; i >= 0; i--) {\r\n if (this[i].index === item.scope.$index) {\r\n this[i].height = this.rowHeight || item.element.outerHeight();\r\n return;\r\n }\r\n }\r\n this.push({\r\n index: item.scope.$index,\r\n height: this.rowHeight || item.element.outerHeight()\r\n });\r\n this.sort((a, b) => ((a.index < b.index) ? -1 : ((a.index > b.index) ? 1 : 0)));\r\n }\r\n\r\n remove(argument, _isTop) {\r\n const index = argument % 1 === 0 ? argument : argument.scope.$index;\r\n const isTop = argument % 1 === 0 ? _isTop : argument._op === 'isTop';\r\n for (let i = this.length - 1; i >= 0; i--) {\r\n if (this[i].index === index) {\r\n this.splice(i, 1);\r\n break;\r\n }\r\n }\r\n if(!isTop) {\r\n for (let i = this.length - 1; i >= 0; i--) {\r\n if (this[i].index > index) {\r\n this[i].index--;\r\n }\r\n }\r\n }\r\n }\r\n\r\n clear() {\r\n this.length = 0;\r\n }\r\n}\r\n\r\nfunction Cache() {\r\n const instance = [];\r\n instance.push.apply(instance, arguments);\r\n Object.setPrototypeOf(instance, Cache.prototype);\r\n return instance;\r\n}\r\nCache.prototype = Object.create(Array.prototype);\r\nObject.getOwnPropertyNames(CacheProto.prototype).forEach(methodName =>\r\n Cache.prototype[methodName] = CacheProto.prototype[methodName]\r\n);\r\n\r\nfunction generateElement(template) {\r\n if(template.nodeType !== Node.ELEMENT_NODE) {\r\n throw new Error('ui-scroll directive requires an Element node for templating the view');\r\n }\r\n let element;\r\n switch (template.tagName.toLowerCase()) {\r\n case 'dl':\r\n throw new Error(`ui-scroll directive does not support <${template.tagName}> as a repeating tag: ${template.outerHTML}`);\r\n case 'tr':\r\n let table = angular.element('
    ');\r\n element = table.find('tr');\r\n break;\r\n case 'li':\r\n element = angular.element('
  • ');\r\n break;\r\n default:\r\n element = angular.element('
    ');\r\n }\r\n return element;\r\n}\r\n\r\nclass Padding {\r\n constructor(template,rowHeight) {\r\n this.element = generateElement(template);\r\n this.cache = new Cache();\r\n this.cache.rowHeight = rowHeight;\r\n }\r\n\r\n height() {\r\n // When called wit a parameter, this sets the height of the padding\r\n return this.element.height.apply(this.element, arguments);\r\n }\r\n}\r\n\r\nexport default Padding;","import Padding from './padding';\r\n\r\nexport default function Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding, rowHeight) {\r\n let topPadding = null;\r\n let bottomPadding = null;\r\n const viewport = viewportController && viewportController.viewport ? viewportController.viewport : angular.element(window);\r\n const container = viewportController && viewportController.container ? viewportController.container : undefined;\r\n const scope = viewportController && viewportController.scope ? viewportController.scope : $rootScope;\r\n\r\n viewport.css({\r\n 'overflow-anchor': 'none',\r\n 'overflow-y': 'auto',\r\n 'display': 'block'\r\n });\r\n\r\n function bufferPadding() {\r\n return viewport.outerHeight() * padding; // some extra space to initiate preload\r\n }\r\n\r\n angular.extend(viewport, {\r\n getScope() {\r\n return scope;\r\n },\r\n\r\n createPaddingElements(template) {\r\n topPadding = new Padding(template,rowHeight);\r\n bottomPadding = new Padding(template,rowHeight);\r\n element.before(topPadding.element);\r\n element.after(bottomPadding.element);\r\n topPadding.height(0);\r\n bottomPadding.height(0);\r\n },\r\n\r\n applyContainerStyle() {\r\n if (!container) {\r\n return true;\r\n }\r\n if(container !== viewport) {\r\n viewport.css('height', window.getComputedStyle(container[0]).height);\r\n }\r\n return viewport.height() > 0;\r\n },\r\n\r\n bottomDataPos() {\r\n let scrollHeight = viewport[0].scrollHeight;\r\n scrollHeight = scrollHeight != null ? scrollHeight : viewport[0].document.documentElement.scrollHeight;\r\n return scrollHeight - bottomPadding.height();\r\n },\r\n\r\n topDataPos() {\r\n return topPadding.height();\r\n },\r\n\r\n bottomVisiblePos() {\r\n return viewport.scrollTop() + viewport.outerHeight();\r\n },\r\n\r\n topVisiblePos() {\r\n return viewport.scrollTop();\r\n },\r\n\r\n insertElement(e, sibling) {\r\n return elementRoutines.insertElement(e, sibling || topPadding.element);\r\n },\r\n\r\n insertElementAnimated(e, sibling) {\r\n return elementRoutines.insertElementAnimated(e, sibling || topPadding.element);\r\n },\r\n\r\n shouldLoadBottom() {\r\n return !buffer.eof && viewport.bottomDataPos() < viewport.bottomVisiblePos() + bufferPadding();\r\n },\r\n\r\n clipBottom() {\r\n // clip the invisible items off the bottom\r\n let overage = 0;\r\n let overageHeight = 0;\r\n let itemHeight = 0;\r\n let emptySpaceHeight = viewport.bottomDataPos() - viewport.bottomVisiblePos() - bufferPadding();\r\n\r\n // Simple calculation now using the fixed rowHeight if available.\r\n // Might be optimized if needed\r\n for (let i = buffer.length - 1; i >= 0; i--) {\r\n itemHeight = rowHeight ? rowHeight : buffer[i].element.outerHeight(true);\r\n if (overageHeight + itemHeight > emptySpaceHeight) {\r\n break;\r\n }\r\n bottomPadding.cache.add(buffer[i]);\r\n overageHeight += itemHeight;\r\n overage++;\r\n }\r\n\r\n if (overage > 0) {\r\n buffer.eof = false;\r\n buffer.remove(buffer.length - overage, buffer.length);\r\n buffer.next -= overage;\r\n viewport.adjustPaddings();\r\n }\r\n },\r\n\r\n shouldLoadTop() {\r\n return !buffer.bof && (viewport.topDataPos() > viewport.topVisiblePos() - bufferPadding());\r\n },\r\n\r\n clipTop() {\r\n // clip the invisible items off the top\r\n let overage = 0;\r\n let overageHeight = 0;\r\n let itemHeight = 0;\r\n let emptySpaceHeight = viewport.topVisiblePos() - viewport.topDataPos() - bufferPadding();\r\n\r\n // Simple calculation now using the fixed rowHeight if available.\r\n // Might be optimized if needed\r\n for (let i = 0; i < buffer.length; i++) {\r\n itemHeight = rowHeight ? rowHeight : buffer[i].element.outerHeight(true);\r\n if (overageHeight + itemHeight > emptySpaceHeight) {\r\n break;\r\n }\r\n topPadding.cache.add(buffer[i]);\r\n overageHeight += itemHeight;\r\n overage++;\r\n }\r\n\r\n if (overage > 0) {\r\n // we need to adjust top padding element before items are removed from top\r\n // to avoid strange behaviour of scroll bar during remove top items when we are at the very bottom\r\n topPadding.height(topPadding.height() + overageHeight);\r\n buffer.bof = false;\r\n buffer.remove(0, overage);\r\n buffer.first += overage;\r\n }\r\n },\r\n\r\n adjustPaddings() {\r\n if (!buffer.length) {\r\n return;\r\n }\r\n\r\n // precise heights calculation based on items that are in buffer or that were in buffer once\r\n // outerHeight(true) == [height+ padding + border + margin]\r\n // The calculation bellow can certainly be replaced by:\r\n // const visibleItemsHeight = rowHeight ? rowHeight * buffer.length\r\n // : buffer.reduce((summ, item) => summ + item.element.outerHeight(true), 0);\r\n const visibleItemsHeight = buffer.reduce((summ, item) => summ + (rowHeight ? rowHeight : item.element.outerHeight(true)), 0);\r\n\r\n // Sinlarly, the calculation of the paddings (top & bottom) can certanly be optimizez\r\n let topPaddingHeight = 0, topCount = 0;\r\n topPadding.cache.forEach(item => {\r\n if(item.index < buffer.first) {\r\n topPaddingHeight += item.height; // outerHeight(true) is actually stored in this data member\r\n topCount++;\r\n }\r\n });\r\n\r\n let bottomPaddingHeight = 0, bottomCount = 0;\r\n bottomPadding.cache.forEach(item => {\r\n if(item.index >= buffer.next) {\r\n bottomPaddingHeight += item.height; // outerHeight(true) is actually stored in this data member\r\n bottomCount++;\r\n }\r\n });\r\n\r\n const totalHeight = visibleItemsHeight + topPaddingHeight + bottomPaddingHeight;\r\n const averageItemHeight = totalHeight / (topCount + bottomCount + buffer.length);\r\n\r\n // average heights calculation, items that have never been reached\r\n let adjustTopPadding = buffer.minIndexUser !== null && buffer.minIndex > buffer.minIndexUser;\r\n let adjustBottomPadding = buffer.maxIndexUser !== null && buffer.maxIndex < buffer.maxIndexUser;\r\n let topPaddingHeightAdd = adjustTopPadding ? (buffer.minIndex - buffer.minIndexUser) * averageItemHeight : 0;\r\n let bottomPaddingHeightAdd = adjustBottomPadding ? (buffer.maxIndexUser - buffer.maxIndex) * averageItemHeight : 0;\r\n\r\n // paddings combine adjustment\r\n topPadding.height(topPaddingHeight + topPaddingHeightAdd);\r\n bottomPadding.height(bottomPaddingHeight + bottomPaddingHeightAdd);\r\n },\r\n\r\n onAfterMinIndexSet(topPaddingHeightOld) {\r\n // additional scrollTop adjustment in case of datasource.minIndex external set\r\n if (buffer.minIndexUser !== null && buffer.minIndex > buffer.minIndexUser) {\r\n let diff = topPadding.height() - topPaddingHeightOld;\r\n viewport.scrollTop(viewport.scrollTop() + diff);\r\n while((diff -= viewport.scrollTop()) > 0) {\r\n bottomPadding.height(bottomPadding.height() + diff);\r\n viewport.scrollTop(viewport.scrollTop() + diff);\r\n }\r\n }\r\n },\r\n\r\n onAfterPrepend(updates) {\r\n if (!updates.prepended.length)\r\n return;\r\n const height = buffer.effectiveHeight(updates.prepended);\r\n const paddingHeight = topPadding.height() - height;\r\n if (paddingHeight >= 0) {\r\n topPadding.height(paddingHeight);\r\n }\r\n else {\r\n topPadding.height(0);\r\n viewport.scrollTop(viewport.scrollTop() - paddingHeight);\r\n }\r\n },\r\n\r\n resetTopPadding() {\r\n topPadding.height(0);\r\n topPadding.cache.clear();\r\n },\r\n\r\n resetBottomPadding() {\r\n bottomPadding.height(0);\r\n bottomPadding.cache.clear();\r\n },\r\n\r\n removeCacheItem(item, isTop) {\r\n topPadding.cache.remove(item, isTop);\r\n bottomPadding.cache.remove(item, isTop);\r\n },\r\n\r\n removeItem(item) {\r\n this.removeCacheItem(item);\r\n return buffer.remove(item);\r\n }\r\n });\r\n\r\n return viewport;\r\n}\r\n","class Adapter {\r\n\r\n constructor($scope, $parse, $attr, viewport, buffer, doAdjust, reload) {\r\n this.$parse = $parse;\r\n this.$attr = $attr;\r\n this.viewport = viewport;\r\n this.buffer = buffer;\r\n\r\n this.doAdjust = doAdjust;\r\n this.reload = reload;\r\n\r\n this.isLoading = false;\r\n this.disabled = false;\r\n\r\n const viewportScope = viewport.getScope();\r\n this.startScope = viewportScope.$parent ? viewportScope : $scope;\r\n\r\n this.publicContext = {};\r\n this.assignAdapter($attr.adapter);\r\n this.generatePublicContext();\r\n }\r\n\r\n assignAdapter(adapterAttr) {\r\n if (!adapterAttr || !(adapterAttr = adapterAttr.replace(/^\\s+|\\s+$/gm, ''))) {\r\n return;\r\n }\r\n let adapterOnScope;\r\n\r\n try {\r\n this.$parse(adapterAttr).assign(this.startScope, {});\r\n adapterOnScope = this.$parse(adapterAttr)(this.startScope);\r\n }\r\n catch (error) {\r\n error.message = `Angular ui-scroll Adapter assignment exception.\\n` +\r\n `Can't parse \"${adapterAttr}\" expression.\\n` +\r\n error.message;\r\n throw error;\r\n }\r\n\r\n angular.extend(adapterOnScope, this.publicContext);\r\n this.publicContext = adapterOnScope;\r\n }\r\n\r\n generatePublicContext() {\r\n // these methods will be accessible out of ui-scroll via user defined adapter\r\n const publicMethods = ['reload', 'applyUpdates', 'append', 'prepend', 'isBOF', 'isEOF', 'isEmpty'];\r\n for (let i = publicMethods.length - 1; i >= 0; i--) {\r\n this.publicContext[publicMethods[i]] = this[publicMethods[i]].bind(this);\r\n }\r\n\r\n // these read-only props will be accessible out of ui-scroll via user defined adapter\r\n const publicProps = ['isLoading', 'topVisible', 'topVisibleElement', 'topVisibleScope', 'bottomVisible', 'bottomVisibleElement', 'bottomVisibleScope'];\r\n for (let i = publicProps.length - 1; i >= 0; i--) {\r\n let property, attr = this.$attr[publicProps[i]];\r\n Object.defineProperty(this, publicProps[i], {\r\n get: () => property,\r\n set: (value) => {\r\n property = value;\r\n this.publicContext[publicProps[i]] = value;\r\n if (attr) {\r\n this.$parse(attr).assign(this.startScope, value);\r\n }\r\n }\r\n });\r\n }\r\n\r\n // non-read-only public property\r\n Object.defineProperty(this.publicContext, 'disabled', {\r\n get: () => this.disabled,\r\n set: (value) => (!(this.disabled = value)) ? this.doAdjust() : null\r\n });\r\n }\r\n\r\n loading(value) {\r\n this.isLoading = value;\r\n }\r\n\r\n isBOF() {\r\n return this.buffer.bof;\r\n }\r\n\r\n isEOF() {\r\n return this.buffer.eof;\r\n }\r\n\r\n isEmpty() {\r\n return !this.buffer.length;\r\n }\r\n\r\n append(newItems) {\r\n this.buffer.append(newItems);\r\n this.doAdjust();\r\n this.viewport.clipTop();\r\n this.viewport.clipBottom();\r\n }\r\n\r\n prepend(newItems) {\r\n this.buffer.prepend(newItems);\r\n this.doAdjust();\r\n this.viewport.clipTop();\r\n this.viewport.clipBottom();\r\n }\r\n\r\n applyUpdates(arg1, arg2) {\r\n if (typeof arg1 === 'function') {\r\n this.applyUpdatesFunc(arg1);\r\n } else {\r\n this.applyUpdatesIndex(arg1, arg2);\r\n }\r\n this.doAdjust();\r\n }\r\n\r\n applyUpdatesFunc(cb) {\r\n this.buffer.slice(0).forEach((wrapper) => {\r\n // we need to do it on the buffer clone, because buffer content\r\n // may change as we iterate through\r\n this.applyUpdate(wrapper, cb(wrapper.item, wrapper.scope, wrapper.element));\r\n });\r\n }\r\n\r\n applyUpdatesIndex(index, newItems) {\r\n if (index % 1 !== 0) {\r\n throw new Error('applyUpdates - ' + index + ' is not a valid index (should be an integer)');\r\n }\r\n const _index = index - this.buffer.first;\r\n\r\n // apply updates only within buffer\r\n if (_index >= 0 && _index < this.buffer.length) {\r\n this.applyUpdate(this.buffer[_index], newItems);\r\n }\r\n // out-of-buffer case: deletion may affect Paddings\r\n else if(index >= this.buffer.getAbsMinIndex() && index <= this.buffer.getAbsMaxIndex()) {\r\n if(angular.isArray(newItems) && !newItems.length) {\r\n this.viewport.removeCacheItem(index, index === this.buffer.minIndex);\r\n if(index === this.buffer.getAbsMinIndex()) {\r\n this.buffer.incrementMinIndex();\r\n }\r\n else {\r\n this.buffer.decrementMaxIndex();\r\n }\r\n }\r\n }\r\n }\r\n\r\n applyUpdate(wrapper, newItems) {\r\n if (!angular.isArray(newItems)) {\r\n return;\r\n }\r\n let position = this.buffer.indexOf(wrapper);\r\n if (!newItems.reverse().some(newItem => newItem === wrapper.item)) {\r\n wrapper.op = 'remove';\r\n if(position === 0 && !newItems.length) {\r\n wrapper._op = 'isTop'; // to catch \"first\" edge case on remove\r\n }\r\n }\r\n newItems.forEach((newItem) => {\r\n if (newItem === wrapper.item) {\r\n position--;\r\n } else {\r\n // 3 parameter (isTop) is to catch \"first\" edge case on insert\r\n this.buffer.insert(position + 1, newItem, position === -1);\r\n }\r\n });\r\n }\r\n\r\n calculateProperties() {\r\n let rowTop = null, topHeight = 0;\r\n let topDone = false, bottomDone = false;\r\n const length = this.buffer.length;\r\n\r\n for (let i = 0; i < length; i++) {\r\n const item = this.buffer[i];\r\n const itemTop = item.element.offset().top;\r\n\r\n if (rowTop !== itemTop) { // a new row condition\r\n const itemHeight = item.element.outerHeight(true);\r\n const top = this.viewport.topDataPos() + topHeight + itemHeight;\r\n\r\n if (!topDone && top > this.viewport.topVisiblePos()) {\r\n topDone = true;\r\n this['topVisible'] = item.item;\r\n this['topVisibleElement'] = item.element;\r\n this['topVisibleScope'] = item.scope;\r\n }\r\n if (!bottomDone && (top >= this.viewport.bottomVisiblePos() || (i === length - 1 && this.isEOF()))) {\r\n bottomDone = true;\r\n this['bottomVisible'] = item.item;\r\n this['bottomVisibleElement'] = item.element;\r\n this['bottomVisibleScope'] = item.scope;\r\n }\r\n topHeight += itemHeight;\r\n }\r\n rowTop = itemTop;\r\n\r\n if (topDone && bottomDone) {\r\n break;\r\n }\r\n }\r\n }\r\n\r\n}\r\n\r\nexport default Adapter;\r\n","import JQLiteExtras from './modules/jqLiteExtras';\nimport ElementRoutines from './modules/elementRoutines.js';\nimport ScrollBuffer from './modules/buffer.js';\nimport Viewport from './modules/viewport.js';\nimport Adapter from './modules/adapter.js';\n\nangular.module('ui.scroll', [])\n\n .constant('JQLiteExtras', JQLiteExtras)\n .run(['JQLiteExtras', (JQLiteExtras) => {\n !window.jQuery ? (new JQLiteExtras()).registerFor(angular.element) : null;\n ElementRoutines.addCSSRules();\n }])\n\n .directive('uiScrollViewport', function () {\n return {\n restrict: 'A',\n controller: [\n '$scope',\n '$element',\n function (scope, element) {\n this.container = element;\n this.viewport = element;\n this.scope = scope;\n\n angular.forEach(element.children(), child => {\n if (child.tagName.toLowerCase() === 'tbody') {\n this.viewport = angular.element(child);\n }\n });\n\n return this;\n }\n ]\n };\n })\n\n .directive('uiScroll', [\n '$log',\n '$injector',\n '$rootScope',\n '$timeout',\n '$interval',\n '$q',\n '$parse',\n function (console, $injector, $rootScope, $timeout, $interval, $q, $parse) {\n\n return {\n require: ['?^uiScrollViewport'],\n restrict: 'A',\n transclude: 'element',\n priority: 1000,\n terminal: true,\n link: link\n };\n\n function link($scope, element, $attr, controllers, linker) {\n const match = $attr.uiScroll.match(/^\\s*(\\w+)\\s+in\\s+([(\\w|\\$)\\.]+)\\s*$/);\n if (!match) {\n throw new Error('Expected uiScroll in form of \\'_item_ in _datasource_\\' but got \\'' + $attr.uiScroll + '\\'');\n }\n\n function parseNumber(value, defaultValue, isFloat) {\n if (!isFloat) {\n value = value === null ? defaultValue : Math.floor(value);\n }\n return isNaN(value) ? defaultValue : value;\n }\n\n function parseNumericAttr(value, defaultValue, isFloat) {\n const result = $parse(value)($scope);\n return parseNumber(result, defaultValue, isFloat);\n }\n\n const BUFFER_MIN = 3; // Minimum size of the data source request\n const BUFFER_DEFAULT = 10; // Default datasource request size\n const PADDING_MIN = 0.3; // Mininum # of rows in the padding area\n const PADDING_DEFAULT = 0.5; // Default # of rows in the padding area\n const START_INDEX_DEFAULT = 1; // Default start index when requestng the first data block\n const MAX_VIEWPORT_DELAY = 500; // Max time wait (ms) to get the viewport with an height>0\n const VIEWPORT_POLLING_INTERVAL = 50; // Interval used to check the initial viewport height\n\n let datasource = null;\n const itemName = match[1]; // Name of the index variable to publish\n const datasourceName = match[2]; // Name of the datasource to request the rows from\n const viewportController = controllers[0]; // ViewportController, as specified in the require option (http://websystique.com/angularjs/angularjs-custom-directives-controllers-require-option-guide/)\n const bufferSize = Math.max(BUFFER_MIN, parseNumericAttr($attr.bufferSize, BUFFER_DEFAULT)); \n const padding = Math.max(PADDING_MIN, parseNumericAttr($attr.padding, PADDING_DEFAULT, true));\n let startIndex = parseNumericAttr($attr.startIndex, START_INDEX_DEFAULT);\n\n // PHIL: Provide a fixed row height\n // \n const rowHeight = parseNumericAttr($attr.rowHeight, null, false);\n\n // PHIL: Read the visibility watch option, true by default\n const allowVisibilityWatch = $attr.allowVisibilityWatch!=='false';\n\n // Revision IDs\n // \n let ridActual = 0; // current data revision id\n let pending = [];\n\n const elementRoutines = new ElementRoutines($injector, $q);\n const buffer = new ScrollBuffer(elementRoutines, bufferSize, startIndex);\n const viewport = new Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding, rowHeight);\n const adapter = new Adapter($scope, $parse, $attr, viewport, buffer, doAdjust, reload);\n\n if (viewportController) {\n viewportController.adapter = adapter;\n }\n\n const isDatasourceValid = () =>\n Object.prototype.toString.call(datasource) === '[object Object]' && typeof datasource.get === 'function';\n\n datasource = $parse(datasourceName)($scope); // try to get datasource on scope\n if (!isDatasourceValid()) {\n datasource = $injector.get(datasourceName); // try to inject datasource as service\n if (!isDatasourceValid()) {\n throw new Error(datasourceName + ' is not a valid datasource');\n }\n }\n\n let onRenderHandlers = [];\n function onRenderHandlersRunner() {\n onRenderHandlers.forEach(handler => handler.run());\n onRenderHandlers = [];\n }\n function persistDatasourceIndex(datasource, propName) {\n let getter;\n // need to postpone min/maxIndexUser processing if the view is empty\n if(angular.isNumber(datasource[propName])) {\n getter = datasource[propName];\n if(angular.isNumber(getter)) {\n onRenderHandlers = onRenderHandlers.filter(handler => handler.id !== propName);\n onRenderHandlers.push({\n id: propName,\n run: () => datasource[propName] = getter\n });\n }\n }\n }\n\n function defineDatasourceIndex(datasource, propName, propUserName) {\n const descriptor = Object.getOwnPropertyDescriptor(datasource, propName);\n if (descriptor && (descriptor.set || descriptor.get)) {\n return;\n }\n let getter;\n persistDatasourceIndex(datasource, propName);\n Object.defineProperty(datasource, propName, {\n set: (value) => {\n getter = value;\n if(pending.length && !buffer.length) {\n persistDatasourceIndex(datasource, propName);\n return;\n }\n buffer[propUserName] = value;\n const topPaddingHeightOld = viewport.topDataPos();\n viewport.adjustPaddings();\n if (propName === 'minIndex') {\n viewport.onAfterMinIndexSet(topPaddingHeightOld);\n }\n },\n get: () => getter\n });\n }\n\n defineDatasourceIndex(datasource, 'minIndex', 'minIndexUser');\n defineDatasourceIndex(datasource, 'maxIndex', 'maxIndexUser');\n\n const fetchNext = (datasource.get.length !== 2) ?\n (success) => datasource.get(buffer.next, bufferSize, success) :\n (success) => {\n datasource.get({\n index: buffer.next,\n append: buffer.length ? buffer[buffer.length - 1].item : void 0,\n count: bufferSize\n }, success);\n };\n\n const fetchPrevious = (datasource.get.length !== 2) ?\n (success) => datasource.get(buffer.first - bufferSize, bufferSize, success) :\n (success) => {\n datasource.get({\n index: buffer.first - bufferSize,\n prepend: buffer.length ? buffer[0].item : void 0,\n count: bufferSize\n }, success);\n };\n\n const initialize = () => {\n let tryCount = 0;\n if(!viewport.applyContainerStyle()) {\n const timer = $interval(() => {\n tryCount++;\n if(viewport.applyContainerStyle()) {\n $interval.cancel(timer);\n doAdjust();\n }\n if(tryCount * VIEWPORT_POLLING_INTERVAL >= MAX_VIEWPORT_DELAY) {\n $interval.cancel(timer);\n throw Error(`ui-scroll directive requires a viewport with non-zero height in ${MAX_VIEWPORT_DELAY}ms`);\n }\n }, VIEWPORT_POLLING_INTERVAL);\n }\n else {\n doAdjust();\n }\n };\n\n /**\n * Build padding elements\n *\n * Calling linker is the only way I found to get access to the tag name of the template\n * to prevent the directive scope from pollution a new scope is created and destroyed\n * right after the builder creation is completed\n */\n linker((clone, scope) => {\n viewport.createPaddingElements(clone[0]);\n // we do not include the clone in the DOM. It means that the nested directives will not\n // be able to reach the parent directives, but in this case it is intentional because we\n // created the clone to access the template tag name\n scope.$destroy();\n clone.remove();\n });\n\n $scope.$on('$destroy', () => {\n unbindEvents();\n viewport.unbind('mousewheel', wheelHandler);\n });\n\n viewport.bind('mousewheel', wheelHandler);\n\n initialize();\n\n /* Private function definitions */\n\n function isInvalid(rid) {\n return (rid && rid !== ridActual) || $scope.$$destroyed;\n }\n\n function bindEvents() {\n viewport.bind('resize', resizeAndScrollHandler);\n viewport.bind('scroll', resizeAndScrollHandler);\n }\n\n function unbindEvents() {\n viewport.unbind('resize', resizeAndScrollHandler);\n viewport.unbind('scroll', resizeAndScrollHandler);\n }\n\n function reload() {\n viewport.resetTopPadding();\n viewport.resetBottomPadding();\n if (arguments.length) {\n startIndex = parseNumber(arguments[0], START_INDEX_DEFAULT, false);\n }\n buffer.reset(startIndex);\n persistDatasourceIndex(datasource, 'minIndex');\n persistDatasourceIndex(datasource, 'maxIndex');\n doAdjust();\n }\n\n function isElementVisible(wrapper) {\n return (rowHeight || wrapper.element.height()) && wrapper.element[0].offsetParent;\n }\n\n function visibilityWatcher(wrapper) {\n if (isElementVisible(wrapper)) {\n buffer.forEach((item) => {\n if (typeof item.unregisterVisibilityWatcher === 'function') {\n item.unregisterVisibilityWatcher();\n delete item.unregisterVisibilityWatcher;\n }\n });\n if (!pending.length) {\n $timeout(() => doAdjust());\n }\n }\n }\n\n function insertWrapperContent(wrapper, insertAfter) {\n createElement(wrapper, insertAfter, viewport.insertElement);\n if (allowVisibilityWatch && !isElementVisible(wrapper)) {\n wrapper.unregisterVisibilityWatcher = wrapper.scope.$watch(() => visibilityWatcher(wrapper));\n }\n if (allowVisibilityWatch) {\n elementRoutines.hideElement(wrapper); // hide inserted elements before data binding\n }\n }\n\n function createElement(wrapper, insertAfter, insertElement) {\n let promises = null;\n const sibling = (insertAfter > 0) ? buffer[insertAfter - 1].element : undefined;\n linker((clone, scope) => {\n promises = insertElement(clone, sibling);\n wrapper.element = clone;\n wrapper.scope = scope;\n scope[itemName] = wrapper.item;\n });\n // ui-scroll-grid apply\n if (adapter.transform) {\n const tdInitializer = wrapper.scope.uiScrollTdInitializer;\n if (tdInitializer && tdInitializer.linking) {\n adapter.transform(wrapper.scope, wrapper.element);\n } else {\n wrapper.scope.uiScrollTdInitializer = {\n onLink: () => adapter.transform(wrapper.scope, wrapper.element),\n scope: wrapper.scope\n };\n }\n }\n return promises;\n }\n\n function updateDOM() {\n let promises = [];\n const toBePrepended = [];\n const toBeRemoved = [];\n const inserted = [];\n\n buffer.forEach((wrapper, i) => {\n switch (wrapper.op) {\n case 'prepend':\n toBePrepended.unshift(wrapper);\n break;\n case 'append':\n insertWrapperContent(wrapper, i);\n wrapper.op = 'none';\n inserted.push(wrapper);\n break;\n case 'insert':\n promises = promises.concat(createElement(wrapper, i, viewport.insertElementAnimated));\n wrapper.op = 'none';\n inserted.push(wrapper);\n break;\n case 'remove':\n toBeRemoved.push(wrapper);\n }\n });\n\n toBeRemoved.forEach((wrapper) => promises = promises.concat(viewport.removeItem(wrapper)));\n\n if (toBePrepended.length)\n toBePrepended.forEach((wrapper) => {\n insertWrapperContent(wrapper);\n wrapper.op = 'none';\n });\n\n buffer.forEach((item, i) => item.scope.$index = buffer.first + i);\n\n return {\n prepended: toBePrepended,\n removed: toBeRemoved,\n inserted: inserted,\n animated: promises\n };\n\n }\n\n // Adjust the viewport paddings\n // \n function updatePaddings(rid, updates) {\n // schedule another doAdjust after animation completion\n if (updates.animated.length) {\n $q.all(updates.animated).then(() => {\n viewport.adjustPaddings();\n doAdjust(rid);\n });\n } else {\n viewport.adjustPaddings();\n }\n }\n\n function enqueueFetch(rid, updates) {\n if (viewport.shouldLoadBottom()) {\n if (!updates || buffer.effectiveHeight(updates.inserted) > 0) {\n // this means that at least one item appended in the last batch has height > 0\n if (pending.push(true) === 1) {\n adapter.loading(true);\n fetch(rid);\n }\n }\n } else if (viewport.shouldLoadTop()) {\n if ((!updates || buffer.effectiveHeight(updates.prepended) > 0) || pending[0]) {\n // this means that at least one item appended in the last batch has height > 0\n // pending[0] = true means that previous fetch was appending. We need to force at least one prepend\n // BTW there will always be at least 1 element in the pending array because bottom is fetched first\n if (pending.push(false) === 1) {\n adapter.loading(true);\n fetch(rid);\n }\n }\n }\n }\n\n function processUpdates() {\n const updates = updateDOM();\n\n // We need the item bindings to be processed before we can do adjustments\n !$scope.$$phase && !$rootScope.$$phase && $scope.$digest();\n\n if (allowVisibilityWatch) {\n updates.inserted.forEach(w => elementRoutines.showElement(w));\n updates.prepended.forEach(w => elementRoutines.showElement(w));\n }\n\n return updates;\n }\n\n function doAdjust(rid) {\n if (!rid) { // dismiss pending requests\n pending = [];\n rid = ++ridActual;\n }\n\n const updates = processUpdates();\n\n if (isInvalid(rid)) {\n return;\n }\n\n updatePaddings(rid, updates);\n enqueueFetch(rid);\n\n if (!pending.length) {\n adapter.calculateProperties();\n }\n }\n\n function doAdjustAfterFetch(rid) {\n const updates = processUpdates();\n\n viewport.onAfterPrepend(updates);\n\n if (isInvalid(rid)) {\n return;\n }\n\n updatePaddings(rid, updates);\n onRenderHandlersRunner();\n enqueueFetch(rid, updates);\n pending.shift();\n\n if (pending.length)\n fetch(rid);\n else {\n adapter.loading(false);\n bindEvents();\n adapter.calculateProperties();\n }\n }\n\n function fetch(rid) {\n if (pending[0]) {// scrolling down\n if (buffer.length && !viewport.shouldLoadBottom()) {\n doAdjustAfterFetch(rid);\n } else {\n fetchNext((result) => {\n if (isInvalid(rid)) {\n return;\n }\n\n if (result.length < bufferSize) {\n buffer.eof = true;\n }\n\n if (result.length > 0) {\n viewport.clipTop();\n buffer.append(result);\n }\n\n doAdjustAfterFetch(rid);\n });\n }\n } else { // scrolling up\n if (buffer.length && !viewport.shouldLoadTop()) {\n doAdjustAfterFetch(rid);\n } else {\n fetchPrevious((result) => {\n if (isInvalid(rid)) {\n return;\n }\n\n if (result.length < bufferSize) {\n buffer.bof = true;\n // log 'bof is 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\t\t__webpack_require__.r(ns);\n \t\tObject.defineProperty(ns, 'default', { enumerable: true, value: value });\n \t\tif(mode & 2 && typeof value != 'string') for(var key in value) __webpack_require__.d(ns, key, function(key) { return value[key]; }.bind(null, key));\n \t\treturn ns;\n \t};\n\n \t// getDefaultExport function for compatibility with non-harmony modules\n \t__webpack_require__.n = function(module) {\n \t\tvar getter = module && module.__esModule ?\n \t\t\tfunction getDefault() { return module['default']; } :\n \t\t\tfunction getModuleExports() { return module; };\n \t\t__webpack_require__.d(getter, 'a', getter);\n \t\treturn getter;\n \t};\n\n \t// Object.prototype.hasOwnProperty.call\n \t__webpack_require__.o = function(object, property) { return Object.prototype.hasOwnProperty.call(object, property); };\n\n \t// __webpack_public_path__\n \t__webpack_require__.p = \"\";\n\n\n \t// Load entry module and return exports\n \treturn __webpack_require__(__webpack_require__.s = 1);\n","/*!\r\n globals: angular, window\r\n List of used element methods available in JQuery but not in JQuery Lite\r\n element.before(elem)\r\n element.height()\r\n element.outerHeight(true)\r\n element.height(value) = only for Top/Bottom padding elements\r\n element.scrollTop()\r\n element.scrollTop(value)\r\n */\r\n\r\nexport default class JQLiteExtras {\r\n\r\n registerFor(element) {\r\n let convertToPx, css, getStyle, isWindow;\r\n // angular implementation blows up if elem is the window\r\n css = angular.element.prototype.css;\r\n\r\n element.prototype.css = function (name, value) {\r\n let self = this;\r\n let elem = self[0];\r\n if (!(!elem || elem.nodeType === 3 || elem.nodeType === 8 || !elem.style)) {\r\n return css.call(self, name, value);\r\n }\r\n };\r\n\r\n // as defined in angularjs v1.0.5\r\n isWindow = (obj) => obj && obj.document && obj.location && obj.alert && obj.setInterval;\r\n\r\n function scrollTo(self, direction, value) {\r\n let elem = self[0];\r\n let [method, prop, preserve] = {\r\n top: [\r\n 'scrollTop',\r\n 'pageYOffset',\r\n 'scrollLeft'\r\n ],\r\n left: [\r\n 'scrollLeft',\r\n 'pageXOffset',\r\n 'scrollTop'\r\n ]\r\n }[direction];\r\n\r\n const isValueDefined = typeof value !== 'undefined';\r\n if (isWindow(elem)) {\r\n if (isValueDefined) {\r\n return elem.scrollTo(self[preserve].call(self), value);\r\n }\r\n return (prop in elem) ? elem[prop] : elem.document.documentElement[method];\r\n } else {\r\n if (isValueDefined) {\r\n elem[method] = value;\r\n }\r\n return elem[method];\r\n }\r\n }\r\n\r\n if (window.getComputedStyle) {\r\n getStyle = (elem) => window.getComputedStyle(elem, null);\r\n convertToPx = (elem, value) => parseFloat(value);\r\n } else {\r\n getStyle = (elem) => elem.currentStyle;\r\n convertToPx = (elem, value) => {\r\n let left, result, rs, rsLeft, style;\r\n let core_pnum = /[+-]?(?:\\d*\\.|)\\d+(?:[eE][+-]?\\d+|)/.source;\r\n let rnumnonpx = new RegExp('^(' + core_pnum + ')(?!px)[a-z%]+$', 'i');\r\n\r\n if (!rnumnonpx.test(value)) {\r\n return parseFloat(value);\r\n }\r\n\r\n // ported from JQuery\r\n style = elem.style;\r\n left = style.left;\r\n rs = elem.runtimeStyle;\r\n rsLeft = rs && rs.left;\r\n if (rs) {\r\n rs.left = style.left;\r\n }\r\n // put in the new values to get a computed style out\r\n style.left = value;\r\n result = style.pixelLeft;\r\n style.left = left;\r\n if (rsLeft) {\r\n rs.left = rsLeft;\r\n }\r\n return result;\r\n };\r\n }\r\n\r\n function getMeasurements(elem, measure) {\r\n let base, borderA, borderB, computedMarginA, computedMarginB, computedStyle, dirA, dirB, marginA, marginB, paddingA, paddingB;\r\n\r\n if (isWindow(elem)) {\r\n base = document.documentElement[{height: 'clientHeight', width: 'clientWidth'}[measure]];\r\n\r\n return {\r\n base: base,\r\n padding: 0,\r\n border: 0,\r\n margin: 0\r\n };\r\n }\r\n\r\n // Start with offset property\r\n [\r\n base,\r\n dirA,\r\n dirB\r\n ] = {\r\n width: [\r\n elem.offsetWidth,\r\n 'Left',\r\n 'Right'\r\n ],\r\n height: [\r\n elem.offsetHeight,\r\n 'Top',\r\n 'Bottom'\r\n ]\r\n }[measure];\r\n\r\n computedStyle = getStyle(elem);\r\n paddingA = convertToPx(elem, computedStyle['padding' + dirA]) || 0;\r\n paddingB = convertToPx(elem, computedStyle['padding' + dirB]) || 0;\r\n borderA = convertToPx(elem, computedStyle['border' + dirA + 'Width']) || 0;\r\n borderB = convertToPx(elem, computedStyle['border' + dirB + 'Width']) || 0;\r\n computedMarginA = computedStyle['margin' + dirA];\r\n computedMarginB = computedStyle['margin' + dirB];\r\n\r\n // I do not care for width for now, so this hack is irrelevant\r\n // if ( !supportsPercentMargin )\r\n // computedMarginA = hackPercentMargin( elem, computedStyle, computedMarginA )\r\n // computedMarginB = hackPercentMargin( elem, computedStyle, computedMarginB )\r\n marginA = convertToPx(elem, computedMarginA) || 0;\r\n marginB = convertToPx(elem, computedMarginB) || 0;\r\n\r\n return {\r\n base: base,\r\n padding: paddingA + paddingB,\r\n border: borderA + borderB,\r\n margin: marginA + marginB\r\n };\r\n }\r\n\r\n function getWidthHeight(elem, direction, measure) {\r\n let computedStyle, result;\r\n\r\n let measurements = getMeasurements(elem, direction);\r\n\r\n if (measurements.base > 0) {\r\n return {\r\n base: measurements.base - measurements.padding - measurements.border,\r\n outer: measurements.base,\r\n outerfull: measurements.base + measurements.margin\r\n }[measure];\r\n }\r\n\r\n // Fall back to computed then uncomputed css if necessary\r\n computedStyle = getStyle(elem);\r\n result = computedStyle[direction];\r\n\r\n if (result < 0 || result === null) {\r\n result = elem.style[direction] || 0;\r\n }\r\n\r\n // Normalize \"\", auto, and prepare for extra\r\n result = parseFloat(result) || 0;\r\n\r\n return {\r\n base: result - measurements.padding - measurements.border,\r\n outer: result,\r\n outerfull: result + measurements.padding + measurements.border + measurements.margin\r\n }[measure];\r\n }\r\n\r\n // define missing methods\r\n return angular.forEach({\r\n before(newElem) {\r\n var children, elem, i, j, parent, ref, self;\r\n self = this;\r\n elem = self[0];\r\n parent = self.parent();\r\n children = parent.contents();\r\n if (children[0] === elem) {\r\n return parent.prepend(newElem);\r\n } else {\r\n for (i = j = 1, ref = children.length - 1; 1 <= ref ? j <= ref : j >= ref; i = 1 <= ref ? ++j : --j) {\r\n if (children[i] === elem) {\r\n angular.element(children[i - 1]).after(newElem);\r\n return;\r\n }\r\n }\r\n throw new Error('invalid DOM structure ' + elem.outerHTML);\r\n }\r\n },\r\n height (value){\r\n var self;\r\n self = this;\r\n if (typeof value !== 'undefined') {\r\n if (angular.isNumber(value)) {\r\n value = value + 'px';\r\n }\r\n return css.call(self, 'height', value);\r\n } else {\r\n return getWidthHeight(this[0], 'height', 'base');\r\n }\r\n },\r\n outerHeight(option) {\r\n return getWidthHeight(this[0], 'height', option ? 'outerfull' : 'outer');\r\n },\r\n outerWidth(option) {\r\n return getWidthHeight(this[0], 'width', option ? 'outerfull' : 'outer');\r\n },\r\n\r\n /*\r\n The offset setter method is not implemented\r\n */\r\n offset(value) {\r\n let docElem, win;\r\n let self = this;\r\n let box = {\r\n top: 0,\r\n left: 0\r\n };\r\n let elem = self[0];\r\n let doc = elem && elem.ownerDocument;\r\n\r\n if (arguments.length) {\r\n if (value === undefined) {\r\n return self;\r\n }\r\n // TODO: implement setter\r\n throw new Error('offset setter method is not implemented');\r\n }\r\n\r\n if (!doc) {\r\n return;\r\n }\r\n\r\n docElem = doc.documentElement;\r\n\r\n // TODO: Make sure it's not a disconnected DOM node\r\n\r\n if (elem.getBoundingClientRect != null) {\r\n box = elem.getBoundingClientRect();\r\n }\r\n\r\n win = doc.defaultView || doc.parentWindow;\r\n\r\n return {\r\n top: box.top + (win.pageYOffset || docElem.scrollTop) - (docElem.clientTop || 0),\r\n left: box.left + (win.pageXOffset || docElem.scrollLeft) - (docElem.clientLeft || 0)\r\n };\r\n },\r\n scrollTop(value) {\r\n return scrollTo(this, 'top', value);\r\n },\r\n scrollLeft(value) {\r\n return scrollTo(this, 'left', value);\r\n }\r\n }, (value, key) => {\r\n if (!element.prototype[key]) {\r\n return element.prototype[key] = value;\r\n }\r\n });\r\n }\r\n\r\n}\r\n","const hideClassToken = 'ng-ui-scroll-hide';\r\n\r\nexport default class ElementRoutines {\r\n\r\n static addCSSRules() {\r\n const selector = '.' + hideClassToken;\r\n const rules = 'display: none';\r\n const sheet = document.styleSheets[0];\r\n let index;\r\n try {\r\n index = sheet.cssRules.length;\r\n } catch (err) {\r\n index = 0;\r\n }\r\n if('insertRule' in sheet) {\r\n sheet.insertRule(selector + '{' + rules + '}', index);\r\n }\r\n else if('addRule' in sheet) {\r\n sheet.addRule(selector, rules, index);\r\n }\r\n }\r\n\r\n constructor($injector, $q) {\r\n this.$animate = ($injector.has && $injector.has('$animate')) ? $injector.get('$animate') : null;\r\n this.isAngularVersionLessThen1_3 = angular.version.major === 1 && angular.version.minor < 3;\r\n this.$q = $q;\r\n }\r\n\r\n hideElement(wrapper) {\r\n wrapper.element.addClass(hideClassToken);\r\n }\r\n\r\n showElement(wrapper) {\r\n wrapper.element.removeClass(hideClassToken);\r\n }\r\n\r\n insertElement(newElement, previousElement) {\r\n previousElement.after(newElement);\r\n return [];\r\n }\r\n\r\n removeElement(wrapper) {\r\n wrapper.element.remove();\r\n wrapper.scope.$destroy();\r\n return [];\r\n }\r\n\r\n insertElementAnimated(newElement, previousElement) {\r\n if (!this.$animate) {\r\n return this.insertElement(newElement, previousElement);\r\n }\r\n\r\n if (this.isAngularVersionLessThen1_3) {\r\n const deferred = this.$q.defer();\r\n // no need for parent - previous element is never null\r\n this.$animate.enter(newElement, null, previousElement, () => deferred.resolve());\r\n\r\n return [deferred.promise];\r\n }\r\n\r\n // no need for parent - previous element is never null\r\n return [this.$animate.enter(newElement, null, previousElement)];\r\n }\r\n\r\n removeElementAnimated(wrapper) {\r\n if (!this.$animate) {\r\n return this.removeElement(wrapper);\r\n }\r\n\r\n if (this.isAngularVersionLessThen1_3) {\r\n const deferred = this.$q.defer();\r\n this.$animate.leave(wrapper.element, () => {\r\n wrapper.scope.$destroy();\r\n return deferred.resolve();\r\n });\r\n\r\n return [deferred.promise];\r\n }\r\n\r\n return [(this.$animate.leave(wrapper.element)).then(() => wrapper.scope.$destroy())];\r\n }\r\n}","export default function ScrollBuffer(elementRoutines, bufferSize, startIndex, rowHeight) {\r\n const buffer = Object.create(Array.prototype);\r\n\r\n angular.extend(buffer, {\r\n size: bufferSize,\r\n\r\n reset(startIndex) {\r\n buffer.remove(0, buffer.length);\r\n buffer.eof = false;\r\n buffer.bof = false;\r\n buffer.first = startIndex;\r\n buffer.next = startIndex;\r\n buffer.minIndex = startIndex;\r\n buffer.maxIndex = startIndex;\r\n buffer.minIndexUser = null;\r\n buffer.maxIndexUser = null;\r\n },\r\n\r\n append(items) {\r\n items.forEach((item) => {\r\n ++buffer.next;\r\n buffer.insert('append', item);\r\n });\r\n buffer.maxIndex = buffer.eof ? buffer.next - 1 : Math.max(buffer.next - 1, buffer.maxIndex);\r\n },\r\n\r\n prepend(items) {\r\n items.reverse().forEach((item) => {\r\n --buffer.first;\r\n buffer.insert('prepend', item);\r\n });\r\n buffer.minIndex = buffer.bof ? buffer.minIndex = buffer.first : Math.min(buffer.first, buffer.minIndex);\r\n },\r\n\r\n /**\r\n * inserts wrapped element in the buffer\r\n * the first argument is either operation keyword (see below) or a number for operation 'insert'\r\n * for insert the number is the index for the buffer element the new one have to be inserted after\r\n * operations: 'append', 'prepend', 'insert', 'remove', 'update', 'none'\r\n */\r\n insert(operation, item, isTop) {\r\n const wrapper = {\r\n item: item\r\n };\r\n\r\n if (operation % 1 === 0) {// it is an insert\r\n wrapper.op = 'insert';\r\n buffer.splice(operation, 0, wrapper);\r\n if(isTop) {\r\n buffer.first--;\r\n }\r\n else {\r\n buffer.next++;\r\n }\r\n } else {\r\n wrapper.op = operation;\r\n switch (operation) {\r\n case 'append':\r\n buffer.push(wrapper);\r\n break;\r\n case 'prepend':\r\n buffer.unshift(wrapper);\r\n break;\r\n }\r\n }\r\n },\r\n\r\n // removes elements from buffer\r\n remove(arg1, arg2) {\r\n if (angular.isNumber(arg1)) {\r\n // removes items from arg1 (including) through arg2 (excluding)\r\n for (let i = arg1; i < arg2; i++) {\r\n elementRoutines.removeElement(buffer[i]);\r\n }\r\n return buffer.splice(arg1, arg2 - arg1);\r\n }\r\n // removes single item(wrapper) from the buffer\r\n buffer.splice(buffer.indexOf(arg1), 1);\r\n if(arg1._op === 'isTop' && buffer.first === this.getAbsMinIndex()) {\r\n this.incrementMinIndex();\r\n }\r\n else {\r\n this.decrementMaxIndex();\r\n }\r\n if(arg1._op === 'isTop') {\r\n buffer.first++;\r\n }\r\n else {\r\n buffer.next--;\r\n }\r\n if(!buffer.length) {\r\n buffer.first = 1;\r\n buffer.next = 1;\r\n }\r\n\r\n return elementRoutines.removeElementAnimated(arg1);\r\n },\r\n\r\n incrementMinIndex() {\r\n if(buffer.minIndexUser !== null) {\r\n if(buffer.minIndex > buffer.minIndexUser) {\r\n buffer.minIndexUser++;\r\n return;\r\n }\r\n if(buffer.minIndex === buffer.minIndexUser) {\r\n buffer.minIndexUser++;\r\n }\r\n }\r\n buffer.minIndex++;\r\n },\r\n\r\n decrementMaxIndex() {\r\n if(buffer.maxIndexUser !== null && buffer.maxIndex <= buffer.maxIndexUser) {\r\n buffer.maxIndexUser--;\r\n }\r\n buffer.maxIndex--;\r\n },\r\n\r\n getAbsMinIndex() {\r\n if(buffer.minIndexUser !== null) {\r\n return Math.min(buffer.minIndexUser, buffer.minIndex);\r\n }\r\n return buffer.minIndex;\r\n },\r\n\r\n getAbsMaxIndex() {\r\n if(buffer.maxIndexUser !== null) {\r\n return Math.max(buffer.maxIndexUser, buffer.maxIndex);\r\n }\r\n return buffer.maxIndex;\r\n },\r\n\r\n effectiveHeight(elements) {\r\n if (!elements.length) {\r\n return 0;\r\n }\r\n let top = Number.MAX_VALUE;\r\n let bottom = Number.NEGATIVE_INFINITY;\r\n elements.forEach((wrapper) => {\r\n if (wrapper.element[0].offsetParent) {\r\n // element style is not display:none\r\n top = Math.min(top, wrapper.element.offset().top);\r\n bottom = Math.max(bottom, wrapper.element.offset().top + (rowHeight ? rowHeight : wrapper.element.outerHeight(true)));\r\n }\r\n });\r\n return Math.max(0, bottom - top);\r\n }\r\n\r\n });\r\n\r\n buffer.reset(startIndex);\r\n\r\n return buffer;\r\n}\r\n","// Can't just extend the Array, due to Babel does not support built-in classes extending\r\n// This solution was taken from https://stackoverflow.com/questions/46897414/es6-class-extends-array-workaround-for-es5-babel-transpile\r\nclass CacheProto {\r\n add(item) {\r\n for (let i = this.length - 1; i >= 0; i--) {\r\n if (this[i].index === item.scope.$index) {\r\n this[i].height = this.rowHeight || item.element.outerHeight();\r\n return;\r\n }\r\n }\r\n this.push({\r\n index: item.scope.$index,\r\n height: this.rowHeight || item.element.outerHeight()\r\n });\r\n this.sort((a, b) => ((a.index < b.index) ? -1 : ((a.index > b.index) ? 1 : 0)));\r\n }\r\n\r\n remove(argument, _isTop) {\r\n const index = argument % 1 === 0 ? argument : argument.scope.$index;\r\n const isTop = argument % 1 === 0 ? _isTop : argument._op === 'isTop';\r\n for (let i = this.length - 1; i >= 0; i--) {\r\n if (this[i].index === index) {\r\n this.splice(i, 1);\r\n break;\r\n }\r\n }\r\n if(!isTop) {\r\n for (let i = this.length - 1; i >= 0; i--) {\r\n if (this[i].index > index) {\r\n this[i].index--;\r\n }\r\n }\r\n }\r\n }\r\n\r\n clear() {\r\n this.length = 0;\r\n }\r\n}\r\n\r\nfunction Cache() {\r\n const instance = [];\r\n instance.push.apply(instance, arguments);\r\n Object.setPrototypeOf(instance, Cache.prototype);\r\n return instance;\r\n}\r\nCache.prototype = Object.create(Array.prototype);\r\nObject.getOwnPropertyNames(CacheProto.prototype).forEach(methodName =>\r\n Cache.prototype[methodName] = CacheProto.prototype[methodName]\r\n);\r\n\r\nfunction generateElement(template) {\r\n if(template.nodeType !== Node.ELEMENT_NODE) {\r\n throw new Error('ui-scroll directive requires an Element node for templating the view');\r\n }\r\n let element;\r\n switch (template.tagName.toLowerCase()) {\r\n case 'dl':\r\n throw new Error(`ui-scroll directive does not support <${template.tagName}> as a repeating tag: ${template.outerHTML}`);\r\n case 'tr':\r\n let table = angular.element('
    ');\r\n element = table.find('tr');\r\n break;\r\n case 'li':\r\n element = angular.element('
  • ');\r\n break;\r\n default:\r\n element = angular.element('
    ');\r\n }\r\n return element;\r\n}\r\n\r\nclass Padding {\r\n constructor(template,rowHeight) {\r\n this.element = generateElement(template);\r\n this.cache = new Cache();\r\n this.cache.rowHeight = rowHeight;\r\n }\r\n\r\n height() {\r\n // When called wit a parameter, this sets the height of the padding\r\n return this.element.height.apply(this.element, arguments);\r\n }\r\n}\r\n\r\nexport default Padding;","import Padding from './padding';\r\n\r\nexport default function Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding, rowHeight) {\r\n let topPadding = null;\r\n let bottomPadding = null;\r\n const viewport = viewportController && viewportController.viewport ? viewportController.viewport : angular.element(window);\r\n const container = viewportController && viewportController.container ? viewportController.container : undefined;\r\n const scope = viewportController && viewportController.scope ? viewportController.scope : $rootScope;\r\n\r\n viewport.css({\r\n 'overflow-anchor': 'none',\r\n 'overflow-y': 'auto',\r\n 'display': 'block'\r\n });\r\n\r\n function bufferPadding() {\r\n return viewport.outerHeight() * padding; // some extra space to initiate preload\r\n }\r\n\r\n angular.extend(viewport, {\r\n getScope() {\r\n return scope;\r\n },\r\n\r\n createPaddingElements(template) {\r\n topPadding = new Padding(template,rowHeight);\r\n bottomPadding = new Padding(template,rowHeight);\r\n element.before(topPadding.element);\r\n element.after(bottomPadding.element);\r\n topPadding.height(0);\r\n bottomPadding.height(0);\r\n },\r\n\r\n applyContainerStyle() {\r\n if (!container) {\r\n return true;\r\n }\r\n if(container !== viewport) {\r\n viewport.css('height', window.getComputedStyle(container[0]).height);\r\n }\r\n return viewport.height() > 0;\r\n },\r\n\r\n bottomDataPos() {\r\n let scrollHeight = viewport[0].scrollHeight;\r\n scrollHeight = scrollHeight != null ? scrollHeight : viewport[0].document.documentElement.scrollHeight;\r\n return scrollHeight - bottomPadding.height();\r\n },\r\n\r\n topDataPos() {\r\n return topPadding.height();\r\n },\r\n\r\n bottomVisiblePos() {\r\n return viewport.scrollTop() + viewport.outerHeight();\r\n },\r\n\r\n topVisiblePos() {\r\n return viewport.scrollTop();\r\n },\r\n\r\n insertElement(e, sibling) {\r\n return elementRoutines.insertElement(e, sibling || topPadding.element);\r\n },\r\n\r\n insertElementAnimated(e, sibling) {\r\n return elementRoutines.insertElementAnimated(e, sibling || topPadding.element);\r\n },\r\n\r\n shouldLoadBottom() {\r\n return !buffer.eof && viewport.bottomDataPos() < viewport.bottomVisiblePos() + bufferPadding();\r\n },\r\n\r\n clipBottom() {\r\n // clip the invisible items off the bottom\r\n let overage = 0;\r\n let overageHeight = 0;\r\n let itemHeight = 0;\r\n let emptySpaceHeight = viewport.bottomDataPos() - viewport.bottomVisiblePos() - bufferPadding();\r\n\r\n // Simple calculation now using the fixed rowHeight if available.\r\n // Might be optimized if needed\r\n for (let i = buffer.length - 1; i >= 0; i--) {\r\n itemHeight = rowHeight ? rowHeight : buffer[i].element.outerHeight(true);\r\n if (overageHeight + itemHeight > emptySpaceHeight) {\r\n break;\r\n }\r\n bottomPadding.cache.add(buffer[i]);\r\n overageHeight += itemHeight;\r\n overage++;\r\n }\r\n\r\n if (overage > 0) {\r\n buffer.eof = false;\r\n buffer.remove(buffer.length - overage, buffer.length);\r\n buffer.next -= overage;\r\n viewport.adjustPaddings();\r\n }\r\n },\r\n\r\n shouldLoadTop() {\r\n return !buffer.bof && (viewport.topDataPos() > viewport.topVisiblePos() - bufferPadding());\r\n },\r\n\r\n clipTop() {\r\n // clip the invisible items off the top\r\n let overage = 0;\r\n let overageHeight = 0;\r\n let itemHeight = 0;\r\n let emptySpaceHeight = viewport.topVisiblePos() - viewport.topDataPos() - bufferPadding();\r\n\r\n // Simple calculation now using the fixed rowHeight if available.\r\n // Might be optimized if needed\r\n for (let i = 0; i < buffer.length; i++) {\r\n itemHeight = rowHeight ? rowHeight : buffer[i].element.outerHeight(true);\r\n if (overageHeight + itemHeight > emptySpaceHeight) {\r\n break;\r\n }\r\n topPadding.cache.add(buffer[i]);\r\n overageHeight += itemHeight;\r\n overage++;\r\n }\r\n\r\n if (overage > 0) {\r\n // we need to adjust top padding element before items are removed from top\r\n // to avoid strange behaviour of scroll bar during remove top items when we are at the very bottom\r\n topPadding.height(topPadding.height() + overageHeight);\r\n buffer.bof = false;\r\n buffer.remove(0, overage);\r\n buffer.first += overage;\r\n }\r\n },\r\n\r\n adjustPaddings() {\r\n if (!buffer.length) {\r\n return;\r\n }\r\n\r\n // precise heights calculation based on items that are in buffer or that were in buffer once\r\n // outerHeight(true) == [height+ padding + border + margin]\r\n // The calculation bellow can certainly be replaced by:\r\n // const visibleItemsHeight = rowHeight ? rowHeight * buffer.length\r\n // : buffer.reduce((summ, item) => summ + item.element.outerHeight(true), 0);\r\n const visibleItemsHeight = buffer.reduce((summ, item) => summ + (rowHeight ? rowHeight : item.element.outerHeight(true)), 0);\r\n\r\n // Sinlarly, the calculation of the paddings (top & bottom) can certanly be optimizez\r\n let topPaddingHeight = 0, topCount = 0;\r\n topPadding.cache.forEach(item => {\r\n if(item.index < buffer.first) {\r\n topPaddingHeight += item.height; // outerHeight(true) is actually stored in this data member\r\n topCount++;\r\n }\r\n });\r\n\r\n let bottomPaddingHeight = 0, bottomCount = 0;\r\n bottomPadding.cache.forEach(item => {\r\n if(item.index >= buffer.next) {\r\n bottomPaddingHeight += item.height; // outerHeight(true) is actually stored in this data member\r\n bottomCount++;\r\n }\r\n });\r\n\r\n const totalHeight = visibleItemsHeight + topPaddingHeight + bottomPaddingHeight;\r\n const averageItemHeight = totalHeight / (topCount + bottomCount + buffer.length);\r\n\r\n // average heights calculation, items that have never been reached\r\n let adjustTopPadding = buffer.minIndexUser !== null && buffer.minIndex > buffer.minIndexUser;\r\n let adjustBottomPadding = buffer.maxIndexUser !== null && buffer.maxIndex < buffer.maxIndexUser;\r\n let topPaddingHeightAdd = adjustTopPadding ? (buffer.minIndex - buffer.minIndexUser) * averageItemHeight : 0;\r\n let bottomPaddingHeightAdd = adjustBottomPadding ? (buffer.maxIndexUser - buffer.maxIndex) * averageItemHeight : 0;\r\n\r\n // paddings combine adjustment\r\n topPadding.height(topPaddingHeight + topPaddingHeightAdd);\r\n bottomPadding.height(bottomPaddingHeight + bottomPaddingHeightAdd);\r\n },\r\n\r\n onAfterMinIndexSet(topPaddingHeightOld) {\r\n // additional scrollTop adjustment in case of datasource.minIndex external set\r\n if (buffer.minIndexUser !== null && buffer.minIndex > buffer.minIndexUser) {\r\n let diff = topPadding.height() - topPaddingHeightOld;\r\n viewport.scrollTop(viewport.scrollTop() + diff);\r\n while((diff -= viewport.scrollTop()) > 0) {\r\n bottomPadding.height(bottomPadding.height() + diff);\r\n viewport.scrollTop(viewport.scrollTop() + diff);\r\n }\r\n }\r\n },\r\n\r\n onAfterPrepend(updates) {\r\n if (!updates.prepended.length)\r\n return;\r\n const height = buffer.effectiveHeight(updates.prepended);\r\n const paddingHeight = topPadding.height() - height;\r\n if (paddingHeight >= 0) {\r\n topPadding.height(paddingHeight);\r\n }\r\n else {\r\n topPadding.height(0);\r\n viewport.scrollTop(viewport.scrollTop() - paddingHeight);\r\n }\r\n },\r\n\r\n resetTopPadding() {\r\n topPadding.height(0);\r\n topPadding.cache.clear();\r\n },\r\n\r\n resetBottomPadding() {\r\n bottomPadding.height(0);\r\n bottomPadding.cache.clear();\r\n },\r\n\r\n removeCacheItem(item, isTop) {\r\n topPadding.cache.remove(item, isTop);\r\n bottomPadding.cache.remove(item, isTop);\r\n },\r\n\r\n removeItem(item) {\r\n this.removeCacheItem(item);\r\n return buffer.remove(item);\r\n }\r\n });\r\n\r\n return viewport;\r\n}\r\n","class Adapter {\r\n\r\n constructor($scope, $parse, $attr, viewport, buffer, doAdjust, reload) {\r\n this.$parse = $parse;\r\n this.$attr = $attr;\r\n this.viewport = viewport;\r\n this.buffer = buffer;\r\n\r\n this.doAdjust = doAdjust;\r\n this.reload = reload;\r\n\r\n this.isLoading = false;\r\n this.disabled = false;\r\n\r\n const viewportScope = viewport.getScope();\r\n this.startScope = viewportScope.$parent ? viewportScope : $scope;\r\n\r\n this.publicContext = {};\r\n this.assignAdapter($attr.adapter);\r\n this.generatePublicContext();\r\n }\r\n\r\n assignAdapter(adapterAttr) {\r\n if (!adapterAttr || !(adapterAttr = adapterAttr.replace(/^\\s+|\\s+$/gm, ''))) {\r\n return;\r\n }\r\n let adapterOnScope;\r\n\r\n try {\r\n this.$parse(adapterAttr).assign(this.startScope, {});\r\n adapterOnScope = this.$parse(adapterAttr)(this.startScope);\r\n }\r\n catch (error) {\r\n error.message = `Angular ui-scroll Adapter assignment exception.\\n` +\r\n `Can't parse \"${adapterAttr}\" expression.\\n` +\r\n error.message;\r\n throw error;\r\n }\r\n\r\n angular.extend(adapterOnScope, this.publicContext);\r\n this.publicContext = adapterOnScope;\r\n }\r\n\r\n generatePublicContext() {\r\n // these methods will be accessible out of ui-scroll via user defined adapter\r\n const publicMethods = ['reload', 'applyUpdates', 'append', 'prepend', 'isBOF', 'isEOF', 'isEmpty'];\r\n for (let i = publicMethods.length - 1; i >= 0; i--) {\r\n this.publicContext[publicMethods[i]] = this[publicMethods[i]].bind(this);\r\n }\r\n\r\n // these read-only props will be accessible out of ui-scroll via user defined adapter\r\n const publicProps = ['isLoading', 'topVisible', 'topVisibleElement', 'topVisibleScope', 'bottomVisible', 'bottomVisibleElement', 'bottomVisibleScope'];\r\n for (let i = publicProps.length - 1; i >= 0; i--) {\r\n let property, attr = this.$attr[publicProps[i]];\r\n Object.defineProperty(this, publicProps[i], {\r\n get: () => property,\r\n set: (value) => {\r\n property = value;\r\n this.publicContext[publicProps[i]] = value;\r\n if (attr) {\r\n this.$parse(attr).assign(this.startScope, value);\r\n }\r\n }\r\n });\r\n }\r\n\r\n // non-read-only public property\r\n Object.defineProperty(this.publicContext, 'disabled', {\r\n get: () => this.disabled,\r\n set: (value) => (!(this.disabled = value)) ? this.doAdjust() : null\r\n });\r\n }\r\n\r\n loading(value) {\r\n this.isLoading = value;\r\n }\r\n\r\n isBOF() {\r\n return this.buffer.bof;\r\n }\r\n\r\n isEOF() {\r\n return this.buffer.eof;\r\n }\r\n\r\n isEmpty() {\r\n return !this.buffer.length;\r\n }\r\n\r\n append(newItems) {\r\n this.buffer.append(newItems);\r\n this.doAdjust();\r\n this.viewport.clipTop();\r\n this.viewport.clipBottom();\r\n }\r\n\r\n prepend(newItems) {\r\n this.buffer.prepend(newItems);\r\n this.doAdjust();\r\n this.viewport.clipTop();\r\n this.viewport.clipBottom();\r\n }\r\n\r\n applyUpdates(arg1, arg2) {\r\n if (typeof arg1 === 'function') {\r\n this.applyUpdatesFunc(arg1);\r\n } else {\r\n this.applyUpdatesIndex(arg1, arg2);\r\n }\r\n this.doAdjust();\r\n }\r\n\r\n applyUpdatesFunc(cb) {\r\n this.buffer.slice(0).forEach((wrapper) => {\r\n // we need to do it on the buffer clone, because buffer content\r\n // may change as we iterate through\r\n this.applyUpdate(wrapper, cb(wrapper.item, wrapper.scope, wrapper.element));\r\n });\r\n }\r\n\r\n applyUpdatesIndex(index, newItems) {\r\n if (index % 1 !== 0) {\r\n throw new Error('applyUpdates - ' + index + ' is not a valid index (should be an integer)');\r\n }\r\n const _index = index - this.buffer.first;\r\n\r\n // apply updates only within buffer\r\n if (_index >= 0 && _index < this.buffer.length) {\r\n this.applyUpdate(this.buffer[_index], newItems);\r\n }\r\n // out-of-buffer case: deletion may affect Paddings\r\n else if(index >= this.buffer.getAbsMinIndex() && index <= this.buffer.getAbsMaxIndex()) {\r\n if(angular.isArray(newItems) && !newItems.length) {\r\n this.viewport.removeCacheItem(index, index === this.buffer.minIndex);\r\n if(index === this.buffer.getAbsMinIndex()) {\r\n this.buffer.incrementMinIndex();\r\n }\r\n else {\r\n this.buffer.decrementMaxIndex();\r\n }\r\n }\r\n }\r\n }\r\n\r\n applyUpdate(wrapper, newItems) {\r\n if (!angular.isArray(newItems)) {\r\n return;\r\n }\r\n let position = this.buffer.indexOf(wrapper);\r\n if (!newItems.reverse().some(newItem => newItem === wrapper.item)) {\r\n wrapper.op = 'remove';\r\n if(position === 0 && !newItems.length) {\r\n wrapper._op = 'isTop'; // to catch \"first\" edge case on remove\r\n }\r\n }\r\n newItems.forEach((newItem) => {\r\n if (newItem === wrapper.item) {\r\n position--;\r\n } else {\r\n // 3 parameter (isTop) is to catch \"first\" edge case on insert\r\n this.buffer.insert(position + 1, newItem, position === -1);\r\n }\r\n });\r\n }\r\n\r\n calculateProperties() {\r\n let rowTop = null, topHeight = 0;\r\n let topDone = false, bottomDone = false;\r\n const length = this.buffer.length;\r\n\r\n for (let i = 0; i < length; i++) {\r\n const item = this.buffer[i];\r\n const itemTop = item.element.offset().top;\r\n\r\n if (rowTop !== itemTop) { // a new row condition\r\n const itemHeight = item.element.outerHeight(true);\r\n const top = this.viewport.topDataPos() + topHeight + itemHeight;\r\n\r\n if (!topDone && top > this.viewport.topVisiblePos()) {\r\n topDone = true;\r\n this['topVisible'] = item.item;\r\n this['topVisibleElement'] = item.element;\r\n this['topVisibleScope'] = item.scope;\r\n }\r\n if (!bottomDone && (top >= this.viewport.bottomVisiblePos() || (i === length - 1 && this.isEOF()))) {\r\n bottomDone = true;\r\n this['bottomVisible'] = item.item;\r\n this['bottomVisibleElement'] = item.element;\r\n this['bottomVisibleScope'] = item.scope;\r\n }\r\n topHeight += itemHeight;\r\n }\r\n rowTop = itemTop;\r\n\r\n if (topDone && bottomDone) {\r\n break;\r\n }\r\n }\r\n }\r\n\r\n}\r\n\r\nexport default Adapter;\r\n","import JQLiteExtras from './modules/jqLiteExtras';\nimport ElementRoutines from './modules/elementRoutines.js';\nimport ScrollBuffer from './modules/buffer.js';\nimport Viewport from './modules/viewport.js';\nimport Adapter from './modules/adapter.js';\n\nangular.module('ui.scroll', [])\n\n .constant('JQLiteExtras', JQLiteExtras)\n .run(['JQLiteExtras', (JQLiteExtras) => {\n !(angular.element.fn && angular.element.fn.jquery) ? new JQLiteExtras().registerFor(angular.element) : null;\n //!window.jQuery ? (new JQLiteExtras()).registerFor(angular.element) : null;\n ElementRoutines.addCSSRules();\n }])\n\n .directive('uiScrollViewport', function () {\n return {\n restrict: 'A',\n controller: [\n '$scope',\n '$element',\n function (scope, element) {\n this.container = element;\n this.viewport = element;\n this.scope = scope;\n\n angular.forEach(element.children(), child => {\n if (child.tagName.toLowerCase() === 'tbody') {\n this.viewport = angular.element(child);\n }\n });\n\n return this;\n }\n ]\n };\n })\n\n .directive('uiScroll', [\n '$log',\n '$injector',\n '$rootScope',\n '$timeout',\n '$interval',\n '$q',\n '$parse',\n function (console, $injector, $rootScope, $timeout, $interval, $q, $parse) {\n\n return {\n require: ['?^uiScrollViewport'],\n restrict: 'A',\n transclude: 'element',\n priority: 1000,\n terminal: true,\n link: link\n };\n\n function link($scope, element, $attr, controllers, linker) {\n const match = $attr.uiScroll.match(/^\\s*(\\w+)\\s+in\\s+([(\\w|\\$)\\.]+)\\s*$/);\n if (!match) {\n throw new Error('Expected uiScroll in form of \\'_item_ in _datasource_\\' but got \\'' + $attr.uiScroll + '\\'');\n }\n\n function parseNumber(value, defaultValue, isFloat) {\n if (!isFloat) {\n value = value === null ? defaultValue : Math.floor(value);\n }\n return isNaN(value) ? defaultValue : value;\n }\n\n function parseNumericAttr(value, defaultValue, isFloat) {\n const result = $parse(value)($scope);\n return parseNumber(result, defaultValue, isFloat);\n }\n\n const BUFFER_MIN = 3; // Minimum size of the data source request\n const BUFFER_DEFAULT = 10; // Default datasource request size\n const PADDING_MIN = 0.3; // Mininum # of rows in the padding area\n const PADDING_DEFAULT = 0.5; // Default # of rows in the padding area\n const START_INDEX_DEFAULT = 1; // Default start index when requestng the first data block\n const MAX_VIEWPORT_DELAY = 500; // Max time wait (ms) to get the viewport with an height>0\n const VIEWPORT_POLLING_INTERVAL = 50; // Interval used to check the initial viewport height\n\n let datasource = null;\n const itemName = match[1]; // Name of the index variable to publish\n const datasourceName = match[2]; // Name of the datasource to request the rows from\n const viewportController = controllers[0]; // ViewportController, as specified in the require option (http://websystique.com/angularjs/angularjs-custom-directives-controllers-require-option-guide/)\n const bufferSize = Math.max(BUFFER_MIN, parseNumericAttr($attr.bufferSize, BUFFER_DEFAULT)); \n const padding = Math.max(PADDING_MIN, parseNumericAttr($attr.padding, PADDING_DEFAULT, true));\n let startIndex = parseNumericAttr($attr.startIndex, START_INDEX_DEFAULT);\n\n // PHIL: Provide a fixed row height\n // \n const rowHeight = parseNumericAttr($attr.rowHeight, null, false);\n\n // PHIL: Read the visibility watch option, true by default\n const allowVisibilityWatch = $attr.allowVisibilityWatch!=='false';\n\n // Revision IDs\n // \n let ridActual = 0; // current data revision id\n let pending = [];\n\n const elementRoutines = new ElementRoutines($injector, $q);\n const buffer = new ScrollBuffer(elementRoutines, bufferSize, startIndex, rowHeight);\n const viewport = new Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding, rowHeight);\n const adapter = new Adapter($scope, $parse, $attr, viewport, buffer, doAdjust, reload);\n\n if (viewportController) {\n viewportController.adapter = adapter;\n }\n\n const isDatasourceValid = () =>\n Object.prototype.toString.call(datasource) === '[object Object]' && typeof datasource.get === 'function';\n\n datasource = $parse(datasourceName)($scope); // try to get datasource on scope\n if (!isDatasourceValid()) {\n datasource = $injector.get(datasourceName); // try to inject datasource as service\n if (!isDatasourceValid()) {\n throw new Error(datasourceName + ' is not a valid datasource');\n }\n }\n\n let onRenderHandlers = [];\n function onRenderHandlersRunner() {\n onRenderHandlers.forEach(handler => handler.run());\n onRenderHandlers = [];\n }\n function persistDatasourceIndex(datasource, propName) {\n let getter;\n // need to postpone min/maxIndexUser processing if the view is empty\n if(angular.isNumber(datasource[propName])) {\n getter = datasource[propName];\n if(angular.isNumber(getter)) {\n onRenderHandlers = onRenderHandlers.filter(handler => handler.id !== propName);\n onRenderHandlers.push({\n id: propName,\n run: () => datasource[propName] = getter\n });\n }\n }\n }\n\n function defineDatasourceIndex(datasource, propName, propUserName) {\n const descriptor = Object.getOwnPropertyDescriptor(datasource, propName);\n if (descriptor && (descriptor.set || descriptor.get)) {\n return;\n }\n let getter;\n persistDatasourceIndex(datasource, propName);\n Object.defineProperty(datasource, propName, {\n set: (value) => {\n getter = value;\n if(pending.length && !buffer.length) {\n persistDatasourceIndex(datasource, propName);\n return;\n }\n buffer[propUserName] = value;\n const topPaddingHeightOld = viewport.topDataPos();\n viewport.adjustPaddings();\n if (propName === 'minIndex') {\n viewport.onAfterMinIndexSet(topPaddingHeightOld);\n }\n },\n get: () => getter\n });\n }\n\n defineDatasourceIndex(datasource, 'minIndex', 'minIndexUser');\n defineDatasourceIndex(datasource, 'maxIndex', 'maxIndexUser');\n\n const fetchNext = (datasource.get.length !== 2) ?\n (success) => datasource.get(buffer.next, bufferSize, success) :\n (success) => {\n datasource.get({\n index: buffer.next,\n append: buffer.length ? buffer[buffer.length - 1].item : void 0,\n count: bufferSize\n }, success);\n };\n\n const fetchPrevious = (datasource.get.length !== 2) ?\n (success) => datasource.get(buffer.first - bufferSize, bufferSize, success) :\n (success) => {\n datasource.get({\n index: buffer.first - bufferSize,\n prepend: buffer.length ? buffer[0].item : void 0,\n count: bufferSize\n }, success);\n };\n\n const initialize = () => {\n let tryCount = 0;\n if(!viewport.applyContainerStyle()) {\n const timer = $interval(() => {\n tryCount++;\n if(viewport.applyContainerStyle()) {\n $interval.cancel(timer);\n doAdjust();\n }\n if(tryCount * VIEWPORT_POLLING_INTERVAL >= MAX_VIEWPORT_DELAY) {\n $interval.cancel(timer);\n throw Error(`ui-scroll directive requires a viewport with non-zero height in ${MAX_VIEWPORT_DELAY}ms`);\n }\n }, VIEWPORT_POLLING_INTERVAL);\n }\n else {\n doAdjust();\n }\n };\n\n /**\n * Build padding elements\n *\n * Calling linker is the only way I found to get access to the tag name of the template\n * to prevent the directive scope from pollution a new scope is created and destroyed\n * right after the builder creation is completed\n */\n linker((clone, scope) => {\n viewport.createPaddingElements(clone[0]);\n // we do not include the clone in the DOM. It means that the nested directives will not\n // be able to reach the parent directives, but in this case it is intentional because we\n // created the clone to access the template tag name\n scope.$destroy();\n clone.remove();\n });\n\n $scope.$on('$destroy', () => {\n unbindEvents();\n viewport.unbind('mousewheel', wheelHandler);\n });\n\n viewport.bind('mousewheel', wheelHandler);\n\n initialize();\n\n /* Private function definitions */\n\n function isInvalid(rid) {\n return (rid && rid !== ridActual) || $scope.$$destroyed;\n }\n\n function bindEvents() {\n viewport.bind('resize', resizeAndScrollHandler);\n viewport.bind('scroll', resizeAndScrollHandler);\n }\n\n function unbindEvents() {\n viewport.unbind('resize', resizeAndScrollHandler);\n viewport.unbind('scroll', resizeAndScrollHandler);\n }\n\n function reload() {\n viewport.resetTopPadding();\n viewport.resetBottomPadding();\n if (arguments.length) {\n startIndex = parseNumber(arguments[0], START_INDEX_DEFAULT, false);\n }\n buffer.reset(startIndex);\n persistDatasourceIndex(datasource, 'minIndex');\n persistDatasourceIndex(datasource, 'maxIndex');\n doAdjust();\n }\n\n function isElementVisible(wrapper) {\n return (rowHeight || wrapper.element.height()) && wrapper.element[0].offsetParent;\n }\n\n function visibilityWatcher(wrapper) {\n if (isElementVisible(wrapper)) {\n buffer.forEach((item) => {\n if (typeof item.unregisterVisibilityWatcher === 'function') {\n item.unregisterVisibilityWatcher();\n delete item.unregisterVisibilityWatcher;\n }\n });\n if (!pending.length) {\n $timeout(() => doAdjust());\n }\n }\n }\n\n function insertWrapperContent(wrapper, insertAfter) {\n createElement(wrapper, insertAfter, viewport.insertElement);\n if (allowVisibilityWatch && !isElementVisible(wrapper)) {\n wrapper.unregisterVisibilityWatcher = wrapper.scope.$watch(() => visibilityWatcher(wrapper));\n }\n if (allowVisibilityWatch) {\n elementRoutines.hideElement(wrapper); // hide inserted elements before data binding\n }\n }\n\n function createElement(wrapper, insertAfter, insertElement) {\n let promises = null;\n const sibling = (insertAfter > 0) ? buffer[insertAfter - 1].element : undefined;\n linker((clone, scope) => {\n promises = insertElement(clone, sibling);\n wrapper.element = clone;\n wrapper.scope = scope;\n scope[itemName] = wrapper.item;\n });\n // ui-scroll-grid apply\n if (adapter.transform) {\n const tdInitializer = wrapper.scope.uiScrollTdInitializer;\n if (tdInitializer && tdInitializer.linking) {\n adapter.transform(wrapper.scope, wrapper.element);\n } else {\n wrapper.scope.uiScrollTdInitializer = {\n onLink: () => adapter.transform(wrapper.scope, wrapper.element),\n scope: wrapper.scope\n };\n }\n }\n return promises;\n }\n\n function updateDOM() {\n let promises = [];\n const toBePrepended = [];\n const toBeRemoved = [];\n const inserted = [];\n\n buffer.forEach((wrapper, i) => {\n switch (wrapper.op) {\n case 'prepend':\n toBePrepended.unshift(wrapper);\n break;\n case 'append':\n insertWrapperContent(wrapper, i);\n wrapper.op = 'none';\n inserted.push(wrapper);\n break;\n case 'insert':\n promises = promises.concat(createElement(wrapper, i, viewport.insertElementAnimated));\n wrapper.op = 'none';\n inserted.push(wrapper);\n break;\n case 'remove':\n toBeRemoved.push(wrapper);\n }\n });\n\n toBeRemoved.forEach((wrapper) => promises = promises.concat(viewport.removeItem(wrapper)));\n\n if (toBePrepended.length)\n toBePrepended.forEach((wrapper) => {\n insertWrapperContent(wrapper);\n wrapper.op = 'none';\n });\n\n buffer.forEach((item, i) => item.scope.$index = buffer.first + i);\n\n return {\n prepended: toBePrepended,\n removed: toBeRemoved,\n inserted: inserted,\n animated: promises\n };\n\n }\n\n // Adjust the viewport paddings\n // \n function updatePaddings(rid, updates) {\n // schedule another doAdjust after animation completion\n if (updates.animated.length) {\n $q.all(updates.animated).then(() => {\n viewport.adjustPaddings();\n doAdjust(rid);\n });\n } else {\n viewport.adjustPaddings();\n }\n }\n\n function enqueueFetch(rid, updates) {\n if (viewport.shouldLoadBottom()) {\n if (!updates || buffer.effectiveHeight(updates.inserted) > 0) {\n // this means that at least one item appended in the last batch has height > 0\n if (pending.push(true) === 1) {\n adapter.loading(true);\n fetch(rid);\n }\n }\n } else if (viewport.shouldLoadTop()) {\n if ((!updates || buffer.effectiveHeight(updates.prepended) > 0) || pending[0]) {\n // this means that at least one item appended in the last batch has height > 0\n // pending[0] = true means that previous fetch was appending. We need to force at least one prepend\n // BTW there will always be at least 1 element in the pending array because bottom is fetched first\n if (pending.push(false) === 1) {\n adapter.loading(true);\n fetch(rid);\n }\n }\n }\n }\n\n function processUpdates() {\n const updates = updateDOM();\n\n // We need the item bindings to be processed before we can do adjustments\n !$scope.$$phase && !$rootScope.$$phase && $scope.$digest();\n\n if (allowVisibilityWatch) {\n updates.inserted.forEach(w => elementRoutines.showElement(w));\n updates.prepended.forEach(w => elementRoutines.showElement(w));\n }\n\n return updates;\n }\n\n function doAdjust(rid) {\n if (!rid) { // dismiss pending requests\n pending = [];\n rid = ++ridActual;\n }\n\n const updates = processUpdates();\n\n if (isInvalid(rid)) {\n return;\n }\n\n updatePaddings(rid, updates);\n enqueueFetch(rid);\n\n if (!pending.length) {\n adapter.calculateProperties();\n }\n }\n\n function doAdjustAfterFetch(rid) {\n const updates = processUpdates();\n\n viewport.onAfterPrepend(updates);\n\n if (isInvalid(rid)) {\n return;\n }\n\n updatePaddings(rid, updates);\n onRenderHandlersRunner();\n enqueueFetch(rid, updates);\n pending.shift();\n\n if (pending.length)\n fetch(rid);\n else {\n adapter.loading(false);\n bindEvents();\n adapter.calculateProperties();\n }\n }\n\n function fetch(rid) {\n if (pending[0]) {// scrolling down\n if (buffer.length && !viewport.shouldLoadBottom()) {\n doAdjustAfterFetch(rid);\n } else {\n fetchNext((result) => {\n if (isInvalid(rid)) {\n return;\n }\n\n if (result.length < bufferSize) {\n buffer.eof = true;\n }\n\n if (result.length > 0) {\n viewport.clipTop();\n buffer.append(result);\n }\n\n doAdjustAfterFetch(rid);\n });\n }\n } else { // scrolling up\n if (buffer.length && !viewport.shouldLoadTop()) {\n doAdjustAfterFetch(rid);\n } else {\n fetchPrevious((result) => {\n if (isInvalid(rid)) {\n return;\n }\n\n if (result.length < bufferSize) {\n buffer.bof = true;\n // log 'bof is reached'\n }\n\n if (result.length > 0) {\n if (buffer.length) {\n viewport.clipBottom();\n }\n buffer.prepend(result);\n }\n\n doAdjustAfterFetch(rid);\n });\n }\n }\n }\n\n function resizeAndScrollHandler() {\n if (!$rootScope.$$phase && !adapter.isLoading && !adapter.disabled) {\n\n enqueueFetch(ridActual);\n\n if (pending.length) {\n unbindEvents();\n } else {\n adapter.calculateProperties();\n if(!rowHeight) {\n // The digest is forced to calculate the height, which is not necessary when the height is knowm\n !$scope.$$phase && $scope.$digest();\n }\n }\n }\n }\n\n function wheelHandler(event) {\n if (!adapter.disabled) {\n const scrollTop = viewport[0].scrollTop;\n const yMax = viewport[0].scrollHeight - viewport[0].clientHeight;\n\n if ((scrollTop === 0 && !buffer.bof) || (scrollTop === yMax && !buffer.eof)) {\n event.preventDefault();\n }\n }\n }\n }\n\n }\n ]);\n"],"sourceRoot":""} \ No newline at end of file diff --git a/src/modules/buffer.js b/src/modules/buffer.js index 866afe17..8cf707c7 100644 --- a/src/modules/buffer.js +++ b/src/modules/buffer.js @@ -1,4 +1,4 @@ -export default function ScrollBuffer(elementRoutines, bufferSize, startIndex) { +export default function ScrollBuffer(elementRoutines, bufferSize, startIndex, rowHeight) { const buffer = Object.create(Array.prototype); angular.extend(buffer, { @@ -140,7 +140,7 @@ export default function ScrollBuffer(elementRoutines, bufferSize, startIndex) { if (wrapper.element[0].offsetParent) { // element style is not display:none top = Math.min(top, wrapper.element.offset().top); - bottom = Math.max(bottom, wrapper.element.offset().top + wrapper.element.outerHeight(true)); + bottom = Math.max(bottom, wrapper.element.offset().top + (rowHeight ? rowHeight : wrapper.element.outerHeight(true))); } }); return Math.max(0, bottom - top); diff --git a/src/ui-scroll.js b/src/ui-scroll.js index c4be0500..610ae97b 100644 --- a/src/ui-scroll.js +++ b/src/ui-scroll.js @@ -101,7 +101,7 @@ angular.module('ui.scroll', []) let pending = []; const elementRoutines = new ElementRoutines($injector, $q); - const buffer = new ScrollBuffer(elementRoutines, bufferSize, startIndex); + const buffer = new ScrollBuffer(elementRoutines, bufferSize, startIndex, rowHeight); const viewport = new Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding, rowHeight); const adapter = new Adapter($scope, $parse, $attr, viewport, buffer, doAdjust, reload); From 95a6d4a76f605cb1d89832f683b06299ce93d071 Mon Sep 17 00:00:00 2001 From: Philippe Riand Date: Fri, 21 Jun 2019 08:53:43 -0400 Subject: [PATCH 11/18] Reverted bad commit on demo/fixedRowHeight for test purposes --- demo/fixedRowHeight/fixedRowHeight.html | 32 ++++++++++++++++++------- demo/fixedRowHeight/fixedRowHeight.js | 20 +++------------- 2 files changed, 27 insertions(+), 25 deletions(-) diff --git a/demo/fixedRowHeight/fixedRowHeight.html b/demo/fixedRowHeight/fixedRowHeight.html index 5c7012d9..827cc167 100644 --- a/demo/fixedRowHeight/fixedRowHeight.html +++ b/demo/fixedRowHeight/fixedRowHeight.html @@ -4,7 +4,7 @@ Fixed Row Height - + @@ -31,17 +31,33 @@

    Fixed Row Height

    performance decrease coefficient (0 - fastest)
    -
    -
    -
    - {{item}} - - {{value}} +
    +
    +
    + + {{item.text}} + + + + {{getSum(item)}} + {{getMul(item)}} + {{getText(item)}} + + +
    + {{item.text}} + + + + {{getSum(item)}} + {{getMul(item)}} + {{getText(item)}} +
    +
    -
    diff --git a/demo/fixedRowHeight/fixedRowHeight.js b/demo/fixedRowHeight/fixedRowHeight.js index 98e65238..93185574 100644 --- a/demo/fixedRowHeight/fixedRowHeight.js +++ b/demo/fixedRowHeight/fixedRowHeight.js @@ -1,16 +1,6 @@ angular.module('application', ['ui.scroll']) - .directive( 'hello', function() { - return { - restrict: "E", - scope:{ - content: '@' - }, - template: '
    {{"ct="+content}}
    ' - } - }) - - .controller('MainCtrl', ($scope,$timeout) => { + .controller('MainCtrl', ($scope) => { $scope.hello = 'Hello Main Controller!'; let min = -150, max = 200, delay = 0, inputs = 10; @@ -36,11 +26,7 @@ angular.module('application', ['ui.scroll']) $scope.datasource = { get: (index, count, success) => { console.log('Getting ' + count + ' items started from ' + index + '...'); - $timeout(() => { - if(index<0) { - count = Math.max(0,count+index); - index = 0; - } + setTimeout(() => { const result = []; const start = Math.max(min, index); const end = Math.min(index + count - 1, max); @@ -54,7 +40,7 @@ angular.module('application', ['ui.scroll']) } console.log('Got ' + result.length + ' items [' + start + '..' + end + ']'); success(result); - }, 500); + }, delay); } }; From 359d905362a5a4132c4d3dc45b16708592724850 Mon Sep 17 00:00:00 2001 From: dhilt Date: Tue, 16 Jul 2019 03:18:22 +0300 Subject: [PATCH 12/18] fix lodash dependency vulnerability --- package-lock.json | 51 +++++++++++++---------------------------------- 1 file changed, 14 insertions(+), 37 deletions(-) diff --git a/package-lock.json b/package-lock.json index 5cac9765..10aaf113 100644 --- a/package-lock.json +++ b/package-lock.json @@ -1,6 +1,6 @@ { "name": "angular-ui-scroll", - "version": "1.7.3", + "version": "1.7.4", "lockfileVersion": 1, "requires": true, "dependencies": { @@ -4838,9 +4838,9 @@ } }, "lodash": { - "version": "4.17.11", - "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.11.tgz", - "integrity": "sha512-cQKh8igo5QUhZ7lg38DYWAxMvjSAKG0A8wGSVimP07SIUEK2UO+arSRKbRZWtelMtN5V0Hkwh5ryOto/SshYIg==", + "version": "4.17.14", + "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.14.tgz", + "integrity": "sha512-mmKYbW3GLuJeX+iGP+Y7Gp1AiGHGbXHCOh/jZmrawMmsE7MS4znI3RL2FsjbqOyMayHInjOeykW7PEajUk1/xw==", "dev": true }, "log-symbols": { @@ -5120,9 +5120,9 @@ } }, "mixin-deep": { - "version": "1.3.1", - "resolved": "https://registry.npmjs.org/mixin-deep/-/mixin-deep-1.3.1.tgz", - "integrity": "sha512-8ZItLHeEgaqEvd5lYBXfm4EZSFCX29Jb9K+lAHhDKzReKBQKj3R+7NOF6tjqYi9t4oI8VUfaWITJQm86wnXGNQ==", + "version": "1.3.2", + "resolved": "https://registry.npmjs.org/mixin-deep/-/mixin-deep-1.3.2.tgz", + "integrity": "sha512-WRoDn//mXBiJ1H40rqa3vH0toePwSsGb45iInWlTySa+Uu4k3tYUSxa2v1KqAiLtvlrSzaExqS1gtk96A9zvEA==", "dev": true, "requires": { "for-in": "^1.0.2", @@ -6369,9 +6369,9 @@ "dev": true }, "set-value": { - "version": "2.0.0", - "resolved": "https://registry.npmjs.org/set-value/-/set-value-2.0.0.tgz", - "integrity": "sha512-hw0yxk9GT/Hr5yJEYnHNKYXkIA8mVJgd9ditYZCe16ZczcaELYYcfvaXesNACk2O8O0nTiPQcQhGUQj8JLzeeg==", + "version": "2.0.1", + "resolved": "https://registry.npmjs.org/set-value/-/set-value-2.0.1.tgz", + "integrity": "sha512-JxHc1weCN68wRY0fhCoXpyK55m/XPHafOmK4UWD7m2CI14GMcFypt4w/0+NV5f/ZMby2F6S2wwA7fgynh9gWSw==", "dev": true, "requires": { "extend-shallow": "^2.0.1", @@ -7411,38 +7411,15 @@ "dev": true }, "union-value": { - "version": "1.0.0", - "resolved": "https://registry.npmjs.org/union-value/-/union-value-1.0.0.tgz", - "integrity": "sha1-XHHDTLW61dzr4+oM0IIHulqhrqQ=", + "version": "1.0.1", + "resolved": "https://registry.npmjs.org/union-value/-/union-value-1.0.1.tgz", + "integrity": "sha512-tJfXmxMeWYnczCVs7XAEvIV7ieppALdyepWMkHkwciRpZraG/xwT+s2JN8+pr1+8jCRf80FFzvr+MpQeeoF4Xg==", "dev": true, "requires": { "arr-union": "^3.1.0", "get-value": "^2.0.6", "is-extendable": "^0.1.1", - "set-value": "^0.4.3" - }, - "dependencies": { - "extend-shallow": { - "version": "2.0.1", - "resolved": "https://registry.npmjs.org/extend-shallow/-/extend-shallow-2.0.1.tgz", - "integrity": "sha1-Ua99YUrZqfYQ6huvu5idaxxWiQ8=", - "dev": true, - "requires": { - "is-extendable": "^0.1.0" - } - }, - "set-value": { - "version": "0.4.3", - "resolved": "https://registry.npmjs.org/set-value/-/set-value-0.4.3.tgz", - "integrity": "sha1-fbCPnT0i3H945Trzw79GZuzfzPE=", - "dev": true, - "requires": { - "extend-shallow": "^2.0.1", - "is-extendable": "^0.1.1", - "is-plain-object": "^2.0.1", - "to-object-path": "^0.3.0" - } - } + "set-value": "^2.0.1" } }, "unique-filename": { From b174ffc6a9dd98ff7ea2883d5889123c1494bf60 Mon Sep 17 00:00:00 2001 From: dhilt Date: Tue, 16 Jul 2019 04:41:38 +0300 Subject: [PATCH 13/18] gh-pages auto deploy --- .travis.yml | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/.travis.yml b/.travis.yml index 59a1fbd8..c8b8efc5 100644 --- a/.travis.yml +++ b/.travis.yml @@ -15,3 +15,11 @@ before_script: script: - npm run build + +deploy: + provider: pages + skip_cleanup: true + github_token: $github_token + local_dir: demo + on: + branch: master From 0b62060bbdee1d260ee7ca87281791652b964ba2 Mon Sep 17 00:00:00 2001 From: dhilt Date: Tue, 16 Jul 2019 04:55:41 +0300 Subject: [PATCH 14/18] travis.iml updates --- .travis.yml | 17 +++++++++++------ 1 file changed, 11 insertions(+), 6 deletions(-) diff --git a/.travis.yml b/.travis.yml index c8b8efc5..f606527e 100644 --- a/.travis.yml +++ b/.travis.yml @@ -1,17 +1,22 @@ language: node_js node_js: -- '10.12.0' +- "stable" + +install: +- npm install + +cache: + directories: + - "node_modules" addons: firefox: latest -before_install: +before_script: - export DISPLAY=:99.0 - sh -e /etc/init.d/xvfb start - -before_script: -- npm install +- sleep 3 script: - npm run build @@ -20,6 +25,6 @@ deploy: provider: pages skip_cleanup: true github_token: $github_token - local_dir: demo + local_dir: ./ on: branch: master From bbc1a741ac16e59ecff476be3deb127f38c67411 Mon Sep 17 00:00:00 2001 From: Philippe Riand Date: Wed, 31 Jul 2019 08:44:29 -0400 Subject: [PATCH 15/18] Added unbindEvent() to reload. --- dist/ui-scroll-grid.js | 2 +- dist/ui-scroll.js | 3 ++- dist/ui-scroll.js.map | 2 +- dist/ui-scroll.min.js | 2 +- dist/ui-scroll.min.js.map | 2 +- src/ui-scroll.js | 1 + 6 files changed, 7 insertions(+), 5 deletions(-) diff --git a/dist/ui-scroll-grid.js b/dist/ui-scroll-grid.js index 5998a5a5..d7817ab4 100644 --- a/dist/ui-scroll-grid.js +++ b/dist/ui-scroll-grid.js @@ -1,7 +1,7 @@ /*! * angular-ui-scroll * https://github.com/angular-ui/ui-scroll - * Version: 1.7.4 -- 2019-06-19T10:49:07.005Z + * Version: 1.7.4 -- 2019-07-31T12:43:10.830Z * License: MIT */ /******/ (function(modules) { // webpackBootstrap diff --git a/dist/ui-scroll.js b/dist/ui-scroll.js index 55f97859..e3b9e64e 100644 --- a/dist/ui-scroll.js +++ b/dist/ui-scroll.js @@ -1,7 +1,7 @@ /*! * angular-ui-scroll * https://github.com/angular-ui/ui-scroll - * Version: 1.7.4 -- 2019-06-19T10:49:07.005Z + * Version: 1.7.4 -- 2019-07-31T12:43:10.830Z * License: MIT */ /******/ (function(modules) { // webpackBootstrap @@ -1483,6 +1483,7 @@ angular.module('ui.scroll', []).constant('JQLiteExtras', jqLiteExtras_JQLiteExtr } function reload() { + unbindEvents(); viewport.resetTopPadding(); viewport.resetBottomPadding(); diff --git a/dist/ui-scroll.js.map b/dist/ui-scroll.js.map index a5d4f592..c99f2461 100644 --- a/dist/ui-scroll.js.map +++ b/dist/ui-scroll.js.map @@ -1 +1 @@ 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\t\t__webpack_require__.r(ns);\n \t\tObject.defineProperty(ns, 'default', { enumerable: true, value: value });\n \t\tif(mode & 2 && typeof value != 'string') for(var key in value) __webpack_require__.d(ns, key, function(key) { return value[key]; }.bind(null, key));\n \t\treturn ns;\n \t};\n\n \t// getDefaultExport function for compatibility with non-harmony modules\n \t__webpack_require__.n = function(module) {\n \t\tvar getter = module && module.__esModule ?\n \t\t\tfunction getDefault() { return module['default']; } :\n \t\t\tfunction getModuleExports() { return module; };\n \t\t__webpack_require__.d(getter, 'a', getter);\n \t\treturn getter;\n \t};\n\n \t// Object.prototype.hasOwnProperty.call\n \t__webpack_require__.o = function(object, property) { return Object.prototype.hasOwnProperty.call(object, property); };\n\n \t// __webpack_public_path__\n \t__webpack_require__.p = \"\";\n\n\n \t// Load entry module and return exports\n \treturn __webpack_require__(__webpack_require__.s = 1);\n","/*!\r\n globals: angular, window\r\n List of used element methods available in JQuery but not in JQuery Lite\r\n element.before(elem)\r\n element.height()\r\n element.outerHeight(true)\r\n element.height(value) = only for Top/Bottom padding elements\r\n element.scrollTop()\r\n element.scrollTop(value)\r\n */\r\n\r\nexport default class JQLiteExtras {\r\n\r\n registerFor(element) {\r\n let convertToPx, css, getStyle, isWindow;\r\n // angular implementation blows up if elem is the window\r\n css = angular.element.prototype.css;\r\n\r\n element.prototype.css = function (name, value) {\r\n let self = this;\r\n let elem = self[0];\r\n if (!(!elem || elem.nodeType === 3 || elem.nodeType === 8 || !elem.style)) {\r\n return css.call(self, name, value);\r\n }\r\n };\r\n\r\n // as defined in angularjs v1.0.5\r\n isWindow = (obj) => obj && obj.document && obj.location && obj.alert && obj.setInterval;\r\n\r\n function scrollTo(self, direction, value) {\r\n let elem = self[0];\r\n let [method, prop, preserve] = {\r\n top: [\r\n 'scrollTop',\r\n 'pageYOffset',\r\n 'scrollLeft'\r\n ],\r\n left: [\r\n 'scrollLeft',\r\n 'pageXOffset',\r\n 'scrollTop'\r\n ]\r\n }[direction];\r\n\r\n const isValueDefined = typeof value !== 'undefined';\r\n if (isWindow(elem)) {\r\n if (isValueDefined) {\r\n return elem.scrollTo(self[preserve].call(self), value);\r\n }\r\n return (prop in elem) ? elem[prop] : elem.document.documentElement[method];\r\n } else {\r\n if (isValueDefined) {\r\n elem[method] = value;\r\n }\r\n return elem[method];\r\n }\r\n }\r\n\r\n if (window.getComputedStyle) {\r\n getStyle = (elem) => window.getComputedStyle(elem, null);\r\n convertToPx = (elem, value) => parseFloat(value);\r\n } else {\r\n getStyle = (elem) => elem.currentStyle;\r\n convertToPx = (elem, value) => {\r\n let left, result, rs, rsLeft, style;\r\n let core_pnum = /[+-]?(?:\\d*\\.|)\\d+(?:[eE][+-]?\\d+|)/.source;\r\n let rnumnonpx = new RegExp('^(' + core_pnum + ')(?!px)[a-z%]+$', 'i');\r\n\r\n if (!rnumnonpx.test(value)) {\r\n return parseFloat(value);\r\n }\r\n\r\n // ported from JQuery\r\n style = elem.style;\r\n left = style.left;\r\n rs = elem.runtimeStyle;\r\n rsLeft = rs && rs.left;\r\n if (rs) {\r\n rs.left = style.left;\r\n }\r\n // put in the new values to get a computed style out\r\n style.left = value;\r\n result = style.pixelLeft;\r\n style.left = left;\r\n if (rsLeft) {\r\n rs.left = rsLeft;\r\n }\r\n return result;\r\n };\r\n }\r\n\r\n function getMeasurements(elem, measure) {\r\n let base, borderA, borderB, computedMarginA, computedMarginB, computedStyle, dirA, dirB, marginA, marginB, paddingA, paddingB;\r\n\r\n if (isWindow(elem)) {\r\n base = document.documentElement[{height: 'clientHeight', width: 'clientWidth'}[measure]];\r\n\r\n return {\r\n base: base,\r\n padding: 0,\r\n border: 0,\r\n margin: 0\r\n };\r\n }\r\n\r\n // Start with offset property\r\n [\r\n base,\r\n dirA,\r\n dirB\r\n ] = {\r\n width: [\r\n elem.offsetWidth,\r\n 'Left',\r\n 'Right'\r\n ],\r\n height: [\r\n elem.offsetHeight,\r\n 'Top',\r\n 'Bottom'\r\n ]\r\n }[measure];\r\n\r\n computedStyle = getStyle(elem);\r\n paddingA = convertToPx(elem, computedStyle['padding' + dirA]) || 0;\r\n paddingB = convertToPx(elem, computedStyle['padding' + dirB]) || 0;\r\n borderA = convertToPx(elem, computedStyle['border' + dirA + 'Width']) || 0;\r\n borderB = convertToPx(elem, computedStyle['border' + dirB + 'Width']) || 0;\r\n computedMarginA = computedStyle['margin' + dirA];\r\n computedMarginB = computedStyle['margin' + dirB];\r\n\r\n // I do not care for width for now, so this hack is irrelevant\r\n // if ( !supportsPercentMargin )\r\n // computedMarginA = hackPercentMargin( elem, computedStyle, computedMarginA )\r\n // computedMarginB = hackPercentMargin( elem, computedStyle, computedMarginB )\r\n marginA = convertToPx(elem, computedMarginA) || 0;\r\n marginB = convertToPx(elem, computedMarginB) || 0;\r\n\r\n return {\r\n base: base,\r\n padding: paddingA + paddingB,\r\n border: borderA + borderB,\r\n margin: marginA + marginB\r\n };\r\n }\r\n\r\n function getWidthHeight(elem, direction, measure) {\r\n let computedStyle, result;\r\n\r\n let measurements = getMeasurements(elem, direction);\r\n\r\n if (measurements.base > 0) {\r\n return {\r\n base: measurements.base - measurements.padding - measurements.border,\r\n outer: measurements.base,\r\n outerfull: measurements.base + measurements.margin\r\n }[measure];\r\n }\r\n\r\n // Fall back to computed then uncomputed css if necessary\r\n computedStyle = getStyle(elem);\r\n result = computedStyle[direction];\r\n\r\n if (result < 0 || result === null) {\r\n result = elem.style[direction] || 0;\r\n }\r\n\r\n // Normalize \"\", auto, and prepare for extra\r\n result = parseFloat(result) || 0;\r\n\r\n return {\r\n base: result - measurements.padding - measurements.border,\r\n outer: result,\r\n outerfull: result + measurements.padding + measurements.border + measurements.margin\r\n }[measure];\r\n }\r\n\r\n // define missing methods\r\n return angular.forEach({\r\n before(newElem) {\r\n var children, elem, i, j, parent, ref, self;\r\n self = this;\r\n elem = self[0];\r\n parent = self.parent();\r\n children = parent.contents();\r\n if (children[0] === elem) {\r\n return parent.prepend(newElem);\r\n } else {\r\n for (i = j = 1, ref = children.length - 1; 1 <= ref ? j <= ref : j >= ref; i = 1 <= ref ? ++j : --j) {\r\n if (children[i] === elem) {\r\n angular.element(children[i - 1]).after(newElem);\r\n return;\r\n }\r\n }\r\n throw new Error('invalid DOM structure ' + elem.outerHTML);\r\n }\r\n },\r\n height (value){\r\n var self;\r\n self = this;\r\n if (typeof value !== 'undefined') {\r\n if (angular.isNumber(value)) {\r\n value = value + 'px';\r\n }\r\n return css.call(self, 'height', value);\r\n } else {\r\n return getWidthHeight(this[0], 'height', 'base');\r\n }\r\n },\r\n outerHeight(option) {\r\n return getWidthHeight(this[0], 'height', option ? 'outerfull' : 'outer');\r\n },\r\n outerWidth(option) {\r\n return getWidthHeight(this[0], 'width', option ? 'outerfull' : 'outer');\r\n },\r\n\r\n /*\r\n The offset setter method is not implemented\r\n */\r\n offset(value) {\r\n let docElem, win;\r\n let self = this;\r\n let box = {\r\n top: 0,\r\n left: 0\r\n };\r\n let elem = self[0];\r\n let doc = elem && elem.ownerDocument;\r\n\r\n if (arguments.length) {\r\n if (value === undefined) {\r\n return self;\r\n }\r\n // TODO: implement setter\r\n throw new Error('offset setter method is not implemented');\r\n }\r\n\r\n if (!doc) {\r\n return;\r\n }\r\n\r\n docElem = doc.documentElement;\r\n\r\n // TODO: Make sure it's not a disconnected DOM node\r\n\r\n if (elem.getBoundingClientRect != null) {\r\n box = elem.getBoundingClientRect();\r\n }\r\n\r\n win = doc.defaultView || doc.parentWindow;\r\n\r\n return {\r\n top: box.top + (win.pageYOffset || docElem.scrollTop) - (docElem.clientTop || 0),\r\n left: box.left + (win.pageXOffset || docElem.scrollLeft) - (docElem.clientLeft || 0)\r\n };\r\n },\r\n scrollTop(value) {\r\n return scrollTo(this, 'top', value);\r\n },\r\n scrollLeft(value) {\r\n return scrollTo(this, 'left', value);\r\n }\r\n }, (value, key) => {\r\n if (!element.prototype[key]) {\r\n return element.prototype[key] = value;\r\n }\r\n });\r\n }\r\n\r\n}\r\n","const hideClassToken = 'ng-ui-scroll-hide';\r\n\r\nexport default class ElementRoutines {\r\n\r\n static addCSSRules() {\r\n const selector = '.' + hideClassToken;\r\n const rules = 'display: none';\r\n const sheet = document.styleSheets[0];\r\n let index;\r\n try {\r\n index = sheet.cssRules.length;\r\n } catch (err) {\r\n index = 0;\r\n }\r\n if('insertRule' in sheet) {\r\n sheet.insertRule(selector + '{' + rules + '}', index);\r\n }\r\n else if('addRule' in sheet) {\r\n sheet.addRule(selector, rules, index);\r\n }\r\n }\r\n\r\n constructor($injector, $q) {\r\n this.$animate = ($injector.has && $injector.has('$animate')) ? $injector.get('$animate') : null;\r\n this.isAngularVersionLessThen1_3 = angular.version.major === 1 && angular.version.minor < 3;\r\n this.$q = $q;\r\n }\r\n\r\n hideElement(wrapper) {\r\n wrapper.element.addClass(hideClassToken);\r\n }\r\n\r\n showElement(wrapper) {\r\n wrapper.element.removeClass(hideClassToken);\r\n }\r\n\r\n insertElement(newElement, previousElement) {\r\n previousElement.after(newElement);\r\n return [];\r\n }\r\n\r\n removeElement(wrapper) {\r\n wrapper.element.remove();\r\n wrapper.scope.$destroy();\r\n return [];\r\n }\r\n\r\n insertElementAnimated(newElement, previousElement) {\r\n if (!this.$animate) {\r\n return this.insertElement(newElement, previousElement);\r\n }\r\n\r\n if (this.isAngularVersionLessThen1_3) {\r\n const deferred = this.$q.defer();\r\n // no need for parent - previous element is never null\r\n this.$animate.enter(newElement, null, previousElement, () => deferred.resolve());\r\n\r\n return [deferred.promise];\r\n }\r\n\r\n // no need for parent - previous element is never null\r\n return [this.$animate.enter(newElement, null, previousElement)];\r\n }\r\n\r\n removeElementAnimated(wrapper) {\r\n if (!this.$animate) {\r\n return this.removeElement(wrapper);\r\n }\r\n\r\n if (this.isAngularVersionLessThen1_3) {\r\n const deferred = this.$q.defer();\r\n this.$animate.leave(wrapper.element, () => {\r\n wrapper.scope.$destroy();\r\n return deferred.resolve();\r\n });\r\n\r\n return [deferred.promise];\r\n }\r\n\r\n return [(this.$animate.leave(wrapper.element)).then(() => wrapper.scope.$destroy())];\r\n }\r\n}","export default function ScrollBuffer(elementRoutines, bufferSize, startIndex) {\r\n const buffer = Object.create(Array.prototype);\r\n\r\n angular.extend(buffer, {\r\n size: bufferSize,\r\n\r\n reset(startIndex) {\r\n buffer.remove(0, buffer.length);\r\n buffer.eof = false;\r\n buffer.bof = false;\r\n buffer.first = startIndex;\r\n buffer.next = startIndex;\r\n buffer.minIndex = startIndex;\r\n buffer.maxIndex = startIndex;\r\n buffer.minIndexUser = null;\r\n buffer.maxIndexUser = null;\r\n },\r\n\r\n append(items) {\r\n items.forEach((item) => {\r\n ++buffer.next;\r\n buffer.insert('append', item);\r\n });\r\n buffer.maxIndex = buffer.eof ? buffer.next - 1 : Math.max(buffer.next - 1, buffer.maxIndex);\r\n },\r\n\r\n prepend(items) {\r\n items.reverse().forEach((item) => {\r\n --buffer.first;\r\n buffer.insert('prepend', item);\r\n });\r\n buffer.minIndex = buffer.bof ? buffer.minIndex = buffer.first : Math.min(buffer.first, buffer.minIndex);\r\n },\r\n\r\n /**\r\n * inserts wrapped element in the buffer\r\n * the first argument is either operation keyword (see below) or a number for operation 'insert'\r\n * for insert the number is the index for the buffer element the new one have to be inserted after\r\n * operations: 'append', 'prepend', 'insert', 'remove', 'update', 'none'\r\n */\r\n insert(operation, item, isTop) {\r\n const wrapper = {\r\n item: item\r\n };\r\n\r\n if (operation % 1 === 0) {// it is an insert\r\n wrapper.op = 'insert';\r\n buffer.splice(operation, 0, wrapper);\r\n if(isTop) {\r\n buffer.first--;\r\n }\r\n else {\r\n buffer.next++;\r\n }\r\n } else {\r\n wrapper.op = operation;\r\n switch (operation) {\r\n case 'append':\r\n buffer.push(wrapper);\r\n break;\r\n case 'prepend':\r\n buffer.unshift(wrapper);\r\n break;\r\n }\r\n }\r\n },\r\n\r\n // removes elements from buffer\r\n remove(arg1, arg2) {\r\n if (angular.isNumber(arg1)) {\r\n // removes items from arg1 (including) through arg2 (excluding)\r\n for (let i = arg1; i < arg2; i++) {\r\n elementRoutines.removeElement(buffer[i]);\r\n }\r\n return buffer.splice(arg1, arg2 - arg1);\r\n }\r\n // removes single item(wrapper) from the buffer\r\n buffer.splice(buffer.indexOf(arg1), 1);\r\n if(arg1._op === 'isTop' && buffer.first === this.getAbsMinIndex()) {\r\n this.incrementMinIndex();\r\n }\r\n else {\r\n this.decrementMaxIndex();\r\n }\r\n if(arg1._op === 'isTop') {\r\n buffer.first++;\r\n }\r\n else {\r\n buffer.next--;\r\n }\r\n if(!buffer.length) {\r\n buffer.first = 1;\r\n buffer.next = 1;\r\n }\r\n\r\n return elementRoutines.removeElementAnimated(arg1);\r\n },\r\n\r\n incrementMinIndex() {\r\n if(buffer.minIndexUser !== null) {\r\n if(buffer.minIndex > buffer.minIndexUser) {\r\n buffer.minIndexUser++;\r\n return;\r\n }\r\n if(buffer.minIndex === buffer.minIndexUser) {\r\n buffer.minIndexUser++;\r\n }\r\n }\r\n buffer.minIndex++;\r\n },\r\n\r\n decrementMaxIndex() {\r\n if(buffer.maxIndexUser !== null && buffer.maxIndex <= buffer.maxIndexUser) {\r\n buffer.maxIndexUser--;\r\n }\r\n buffer.maxIndex--;\r\n },\r\n\r\n getAbsMinIndex() {\r\n if(buffer.minIndexUser !== null) {\r\n return Math.min(buffer.minIndexUser, buffer.minIndex);\r\n }\r\n return buffer.minIndex;\r\n },\r\n\r\n getAbsMaxIndex() {\r\n if(buffer.maxIndexUser !== null) {\r\n return Math.max(buffer.maxIndexUser, buffer.maxIndex);\r\n }\r\n return buffer.maxIndex;\r\n },\r\n\r\n effectiveHeight(elements) {\r\n if (!elements.length) {\r\n return 0;\r\n }\r\n let top = Number.MAX_VALUE;\r\n let bottom = Number.NEGATIVE_INFINITY;\r\n elements.forEach((wrapper) => {\r\n if (wrapper.element[0].offsetParent) {\r\n // element style is not display:none\r\n top = Math.min(top, wrapper.element.offset().top);\r\n bottom = Math.max(bottom, wrapper.element.offset().top + wrapper.element.outerHeight(true));\r\n }\r\n });\r\n return Math.max(0, bottom - top);\r\n }\r\n\r\n });\r\n\r\n buffer.reset(startIndex);\r\n\r\n return buffer;\r\n}\r\n","// Can't just extend the Array, due to Babel does not support built-in classes extending\r\n// This solution was taken from https://stackoverflow.com/questions/46897414/es6-class-extends-array-workaround-for-es5-babel-transpile\r\nclass CacheProto {\r\n add(item) {\r\n for (let i = this.length - 1; i >= 0; i--) {\r\n if (this[i].index === item.scope.$index) {\r\n this[i].height = item.element.outerHeight();\r\n return;\r\n }\r\n }\r\n this.push({\r\n index: item.scope.$index,\r\n height: item.element.outerHeight()\r\n });\r\n this.sort((a, b) => ((a.index < b.index) ? -1 : ((a.index > b.index) ? 1 : 0)));\r\n }\r\n\r\n remove(argument, _isTop) {\r\n const index = argument % 1 === 0 ? argument : argument.scope.$index;\r\n const isTop = argument % 1 === 0 ? _isTop : argument._op === 'isTop';\r\n for (let i = this.length - 1; i >= 0; i--) {\r\n if (this[i].index === index) {\r\n this.splice(i, 1);\r\n break;\r\n }\r\n }\r\n if(!isTop) {\r\n for (let i = this.length - 1; i >= 0; i--) {\r\n if (this[i].index > index) {\r\n this[i].index--;\r\n }\r\n }\r\n }\r\n }\r\n\r\n clear() {\r\n this.length = 0;\r\n }\r\n}\r\n\r\nfunction Cache() {\r\n const instance = [];\r\n instance.push.apply(instance, arguments);\r\n Object.setPrototypeOf(instance, Cache.prototype);\r\n return instance;\r\n}\r\nCache.prototype = Object.create(Array.prototype);\r\nObject.getOwnPropertyNames(CacheProto.prototype).forEach(methodName =>\r\n Cache.prototype[methodName] = CacheProto.prototype[methodName]\r\n);\r\n\r\nfunction generateElement(template) {\r\n if(template.nodeType !== Node.ELEMENT_NODE) {\r\n throw new Error('ui-scroll directive requires an Element node for templating the view');\r\n }\r\n let element;\r\n switch (template.tagName.toLowerCase()) {\r\n case 'dl':\r\n throw new Error(`ui-scroll directive does not support <${template.tagName}> as a repeating tag: ${template.outerHTML}`);\r\n case 'tr':\r\n let table = angular.element('
    ');\r\n element = table.find('tr');\r\n break;\r\n case 'li':\r\n element = angular.element('
  • ');\r\n break;\r\n default:\r\n element = angular.element('
    ');\r\n }\r\n return element;\r\n}\r\n\r\nclass Padding {\r\n constructor(template) {\r\n this.element = generateElement(template);\r\n this.cache = new Cache();\r\n }\r\n\r\n height() {\r\n return this.element.height.apply(this.element, arguments);\r\n }\r\n}\r\n\r\nexport default Padding;","import Padding from './padding';\r\n\r\nexport default function Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding) {\r\n let topPadding = null;\r\n let bottomPadding = null;\r\n const viewport = viewportController && viewportController.viewport ? viewportController.viewport : angular.element(window);\r\n const container = viewportController && viewportController.container ? viewportController.container : undefined;\r\n const scope = viewportController && viewportController.scope ? viewportController.scope : $rootScope;\r\n\r\n viewport.css({\r\n 'overflow-anchor': 'none',\r\n 'overflow-y': 'auto',\r\n 'display': 'block'\r\n });\r\n\r\n function bufferPadding() {\r\n return viewport.outerHeight() * padding; // some extra space to initiate preload\r\n }\r\n\r\n angular.extend(viewport, {\r\n getScope() {\r\n return scope;\r\n },\r\n\r\n createPaddingElements(template) {\r\n topPadding = new Padding(template);\r\n bottomPadding = new Padding(template);\r\n element.before(topPadding.element);\r\n element.after(bottomPadding.element);\r\n topPadding.height(0);\r\n bottomPadding.height(0);\r\n },\r\n\r\n applyContainerStyle() {\r\n if (!container) {\r\n return true;\r\n }\r\n if(container !== viewport) {\r\n viewport.css('height', window.getComputedStyle(container[0]).height);\r\n }\r\n return viewport.height() > 0;\r\n },\r\n\r\n bottomDataPos() {\r\n let scrollHeight = viewport[0].scrollHeight;\r\n scrollHeight = scrollHeight != null ? scrollHeight : viewport[0].document.documentElement.scrollHeight;\r\n return scrollHeight - bottomPadding.height();\r\n },\r\n\r\n topDataPos() {\r\n return topPadding.height();\r\n },\r\n\r\n bottomVisiblePos() {\r\n return viewport.scrollTop() + viewport.outerHeight();\r\n },\r\n\r\n topVisiblePos() {\r\n return viewport.scrollTop();\r\n },\r\n\r\n insertElement(e, sibling) {\r\n return elementRoutines.insertElement(e, sibling || topPadding.element);\r\n },\r\n\r\n insertElementAnimated(e, sibling) {\r\n return elementRoutines.insertElementAnimated(e, sibling || topPadding.element);\r\n },\r\n\r\n shouldLoadBottom() {\r\n return !buffer.eof && viewport.bottomDataPos() < viewport.bottomVisiblePos() + bufferPadding();\r\n },\r\n\r\n clipBottom() {\r\n // clip the invisible items off the bottom\r\n let overage = 0;\r\n let overageHeight = 0;\r\n let itemHeight = 0;\r\n let emptySpaceHeight = viewport.bottomDataPos() - viewport.bottomVisiblePos() - bufferPadding();\r\n\r\n for (let i = buffer.length - 1; i >= 0; i--) {\r\n itemHeight = buffer[i].element.outerHeight(true);\r\n if (overageHeight + itemHeight > emptySpaceHeight) {\r\n break;\r\n }\r\n bottomPadding.cache.add(buffer[i]);\r\n overageHeight += itemHeight;\r\n overage++;\r\n }\r\n\r\n if (overage > 0) {\r\n buffer.eof = false;\r\n buffer.remove(buffer.length - overage, buffer.length);\r\n buffer.next -= overage;\r\n viewport.adjustPaddings();\r\n }\r\n },\r\n\r\n shouldLoadTop() {\r\n return !buffer.bof && (viewport.topDataPos() > viewport.topVisiblePos() - bufferPadding());\r\n },\r\n\r\n clipTop() {\r\n // clip the invisible items off the top\r\n let overage = 0;\r\n let overageHeight = 0;\r\n let itemHeight = 0;\r\n let emptySpaceHeight = viewport.topVisiblePos() - viewport.topDataPos() - bufferPadding();\r\n\r\n for (let i = 0; i < buffer.length; i++) {\r\n itemHeight = buffer[i].element.outerHeight(true);\r\n if (overageHeight + itemHeight > emptySpaceHeight) {\r\n break;\r\n }\r\n topPadding.cache.add(buffer[i]);\r\n overageHeight += itemHeight;\r\n overage++;\r\n }\r\n\r\n if (overage > 0) {\r\n // we need to adjust top padding element before items are removed from top\r\n // to avoid strange behaviour of scroll bar during remove top items when we are at the very bottom\r\n topPadding.height(topPadding.height() + overageHeight);\r\n buffer.bof = false;\r\n buffer.remove(0, overage);\r\n buffer.first += overage;\r\n }\r\n },\r\n\r\n adjustPaddings() {\r\n if (!buffer.length) {\r\n return;\r\n }\r\n\r\n // precise heights calculation based on items that are in buffer or that were in buffer once\r\n const visibleItemsHeight = buffer.reduce((summ, item) => summ + item.element.outerHeight(true), 0);\r\n\r\n let topPaddingHeight = 0, topCount = 0;\r\n topPadding.cache.forEach(item => {\r\n if(item.index < buffer.first) {\r\n topPaddingHeight += item.height;\r\n topCount++;\r\n }\r\n });\r\n\r\n let bottomPaddingHeight = 0, bottomCount = 0;\r\n bottomPadding.cache.forEach(item => {\r\n if(item.index >= buffer.next) {\r\n bottomPaddingHeight += item.height;\r\n bottomCount++;\r\n }\r\n });\r\n\r\n const totalHeight = visibleItemsHeight + topPaddingHeight + bottomPaddingHeight;\r\n const averageItemHeight = totalHeight / (topCount + bottomCount + buffer.length);\r\n\r\n // average heights calculation, items that have never been reached\r\n let adjustTopPadding = buffer.minIndexUser !== null && buffer.minIndex > buffer.minIndexUser;\r\n let adjustBottomPadding = buffer.maxIndexUser !== null && buffer.maxIndex < buffer.maxIndexUser;\r\n let topPaddingHeightAdd = adjustTopPadding ? (buffer.minIndex - buffer.minIndexUser) * averageItemHeight : 0;\r\n let bottomPaddingHeightAdd = adjustBottomPadding ? (buffer.maxIndexUser - buffer.maxIndex) * averageItemHeight : 0;\r\n\r\n // paddings combine adjustment\r\n topPadding.height(topPaddingHeight + topPaddingHeightAdd);\r\n bottomPadding.height(bottomPaddingHeight + bottomPaddingHeightAdd);\r\n },\r\n\r\n onAfterMinIndexSet(topPaddingHeightOld) {\r\n // additional scrollTop adjustment in case of datasource.minIndex external set\r\n if (buffer.minIndexUser !== null && buffer.minIndex > buffer.minIndexUser) {\r\n let diff = topPadding.height() - topPaddingHeightOld;\r\n viewport.scrollTop(viewport.scrollTop() + diff);\r\n while((diff -= viewport.scrollTop()) > 0) {\r\n bottomPadding.height(bottomPadding.height() + diff);\r\n viewport.scrollTop(viewport.scrollTop() + diff);\r\n }\r\n }\r\n },\r\n\r\n onAfterPrepend(updates) {\r\n if (!updates.prepended.length)\r\n return;\r\n const height = buffer.effectiveHeight(updates.prepended);\r\n const paddingHeight = topPadding.height() - height;\r\n if (paddingHeight >= 0) {\r\n topPadding.height(paddingHeight);\r\n }\r\n else {\r\n topPadding.height(0);\r\n viewport.scrollTop(viewport.scrollTop() - paddingHeight);\r\n }\r\n },\r\n\r\n resetTopPadding() {\r\n topPadding.height(0);\r\n topPadding.cache.clear();\r\n },\r\n\r\n resetBottomPadding() {\r\n bottomPadding.height(0);\r\n bottomPadding.cache.clear();\r\n },\r\n\r\n removeCacheItem(item, isTop) {\r\n topPadding.cache.remove(item, isTop);\r\n bottomPadding.cache.remove(item, isTop);\r\n },\r\n\r\n removeItem(item) {\r\n this.removeCacheItem(item);\r\n return buffer.remove(item);\r\n }\r\n });\r\n\r\n return viewport;\r\n}\r\n","class Adapter {\r\n\r\n constructor($scope, $parse, $attr, viewport, buffer, doAdjust, reload) {\r\n this.$parse = $parse;\r\n this.$attr = $attr;\r\n this.viewport = viewport;\r\n this.buffer = buffer;\r\n\r\n this.doAdjust = doAdjust;\r\n this.reload = reload;\r\n\r\n this.isLoading = false;\r\n this.disabled = false;\r\n\r\n const viewportScope = viewport.getScope();\r\n this.startScope = viewportScope.$parent ? viewportScope : $scope;\r\n\r\n this.publicContext = {};\r\n this.assignAdapter($attr.adapter);\r\n this.generatePublicContext();\r\n }\r\n\r\n assignAdapter(adapterAttr) {\r\n if (!adapterAttr || !(adapterAttr = adapterAttr.replace(/^\\s+|\\s+$/gm, ''))) {\r\n return;\r\n }\r\n let adapterOnScope;\r\n\r\n try {\r\n this.$parse(adapterAttr).assign(this.startScope, {});\r\n adapterOnScope = this.$parse(adapterAttr)(this.startScope);\r\n }\r\n catch (error) {\r\n error.message = `Angular ui-scroll Adapter assignment exception.\\n` +\r\n `Can't parse \"${adapterAttr}\" expression.\\n` +\r\n error.message;\r\n throw error;\r\n }\r\n\r\n angular.extend(adapterOnScope, this.publicContext);\r\n this.publicContext = adapterOnScope;\r\n }\r\n\r\n generatePublicContext() {\r\n // these methods will be accessible out of ui-scroll via user defined adapter\r\n const publicMethods = ['reload', 'applyUpdates', 'append', 'prepend', 'isBOF', 'isEOF', 'isEmpty'];\r\n for (let i = publicMethods.length - 1; i >= 0; i--) {\r\n this.publicContext[publicMethods[i]] = this[publicMethods[i]].bind(this);\r\n }\r\n\r\n // these read-only props will be accessible out of ui-scroll via user defined adapter\r\n const publicProps = ['isLoading', 'topVisible', 'topVisibleElement', 'topVisibleScope', 'bottomVisible', 'bottomVisibleElement', 'bottomVisibleScope'];\r\n for (let i = publicProps.length - 1; i >= 0; i--) {\r\n let property, attr = this.$attr[publicProps[i]];\r\n Object.defineProperty(this, publicProps[i], {\r\n get: () => property,\r\n set: (value) => {\r\n property = value;\r\n this.publicContext[publicProps[i]] = value;\r\n if (attr) {\r\n this.$parse(attr).assign(this.startScope, value);\r\n }\r\n }\r\n });\r\n }\r\n\r\n // non-read-only public property\r\n Object.defineProperty(this.publicContext, 'disabled', {\r\n get: () => this.disabled,\r\n set: (value) => (!(this.disabled = value)) ? this.doAdjust() : null\r\n });\r\n }\r\n\r\n loading(value) {\r\n this.isLoading = value;\r\n }\r\n\r\n isBOF() {\r\n return this.buffer.bof;\r\n }\r\n\r\n isEOF() {\r\n return this.buffer.eof;\r\n }\r\n\r\n isEmpty() {\r\n return !this.buffer.length;\r\n }\r\n\r\n append(newItems) {\r\n this.buffer.append(newItems);\r\n this.doAdjust();\r\n this.viewport.clipTop();\r\n this.viewport.clipBottom();\r\n }\r\n\r\n prepend(newItems) {\r\n this.buffer.prepend(newItems);\r\n this.doAdjust();\r\n this.viewport.clipTop();\r\n this.viewport.clipBottom();\r\n }\r\n\r\n applyUpdates(arg1, arg2) {\r\n if (typeof arg1 === 'function') {\r\n this.applyUpdatesFunc(arg1);\r\n } else {\r\n this.applyUpdatesIndex(arg1, arg2);\r\n }\r\n this.doAdjust();\r\n }\r\n\r\n applyUpdatesFunc(cb) {\r\n this.buffer.slice(0).forEach((wrapper) => {\r\n // we need to do it on the buffer clone, because buffer content\r\n // may change as we iterate through\r\n this.applyUpdate(wrapper, cb(wrapper.item, wrapper.scope, wrapper.element));\r\n });\r\n }\r\n\r\n applyUpdatesIndex(index, newItems) {\r\n if (index % 1 !== 0) {\r\n throw new Error('applyUpdates - ' + index + ' is not a valid index (should be an integer)');\r\n }\r\n const _index = index - this.buffer.first;\r\n\r\n // apply updates only within buffer\r\n if (_index >= 0 && _index < this.buffer.length) {\r\n this.applyUpdate(this.buffer[_index], newItems);\r\n }\r\n // out-of-buffer case: deletion may affect Paddings\r\n else if(index >= this.buffer.getAbsMinIndex() && index <= this.buffer.getAbsMaxIndex()) {\r\n if(angular.isArray(newItems) && !newItems.length) {\r\n this.viewport.removeCacheItem(index, index === this.buffer.minIndex);\r\n if(index === this.buffer.getAbsMinIndex()) {\r\n this.buffer.incrementMinIndex();\r\n }\r\n else {\r\n this.buffer.decrementMaxIndex();\r\n }\r\n }\r\n }\r\n }\r\n\r\n applyUpdate(wrapper, newItems) {\r\n if (!angular.isArray(newItems)) {\r\n return;\r\n }\r\n let position = this.buffer.indexOf(wrapper);\r\n if (!newItems.reverse().some(newItem => newItem === wrapper.item)) {\r\n wrapper.op = 'remove';\r\n if(position === 0 && !newItems.length) {\r\n wrapper._op = 'isTop'; // to catch \"first\" edge case on remove\r\n }\r\n }\r\n newItems.forEach((newItem) => {\r\n if (newItem === wrapper.item) {\r\n position--;\r\n } else {\r\n // 3 parameter (isTop) is to catch \"first\" edge case on insert\r\n this.buffer.insert(position + 1, newItem, position === -1);\r\n }\r\n });\r\n }\r\n\r\n calculateProperties() {\r\n let rowTop = null, topHeight = 0;\r\n let topDone = false, bottomDone = false;\r\n const length = this.buffer.length;\r\n\r\n for (let i = 0; i < length; i++) {\r\n const item = this.buffer[i];\r\n const itemTop = item.element.offset().top;\r\n\r\n if (rowTop !== itemTop) { // a new row condition\r\n const itemHeight = item.element.outerHeight(true);\r\n const top = this.viewport.topDataPos() + topHeight + itemHeight;\r\n\r\n if (!topDone && top > this.viewport.topVisiblePos()) {\r\n topDone = true;\r\n this['topVisible'] = item.item;\r\n this['topVisibleElement'] = item.element;\r\n this['topVisibleScope'] = item.scope;\r\n }\r\n if (!bottomDone && (top >= this.viewport.bottomVisiblePos() || (i === length - 1 && this.isEOF()))) {\r\n bottomDone = true;\r\n this['bottomVisible'] = item.item;\r\n this['bottomVisibleElement'] = item.element;\r\n this['bottomVisibleScope'] = item.scope;\r\n }\r\n topHeight += itemHeight;\r\n }\r\n rowTop = itemTop;\r\n\r\n if (topDone && bottomDone) {\r\n break;\r\n }\r\n }\r\n }\r\n\r\n}\r\n\r\nexport default Adapter;\r\n","import JQLiteExtras from './modules/jqLiteExtras';\nimport ElementRoutines from './modules/elementRoutines.js';\nimport ScrollBuffer from './modules/buffer.js';\nimport Viewport from './modules/viewport.js';\nimport Adapter from './modules/adapter.js';\n\nangular.module('ui.scroll', [])\n\n .constant('JQLiteExtras', JQLiteExtras)\n .run(['JQLiteExtras', (JQLiteExtras) => {\n const elt = angular.element;\n !(window.jQuery && elt.fn && elt.fn.jquery) ? (new JQLiteExtras()).registerFor(elt) : null;\n ElementRoutines.addCSSRules();\n }])\n\n .directive('uiScrollViewport', function () {\n return {\n restrict: 'A',\n controller: [\n '$scope',\n '$element',\n function (scope, element) {\n this.container = element;\n this.viewport = element;\n this.scope = scope;\n\n angular.forEach(element.children(), child => {\n if (child.tagName.toLowerCase() === 'tbody') {\n this.viewport = angular.element(child);\n }\n });\n\n return this;\n }\n ]\n };\n })\n\n .directive('uiScroll', [\n '$log',\n '$injector',\n '$rootScope',\n '$timeout',\n '$interval',\n '$q',\n '$parse',\n function (console, $injector, $rootScope, $timeout, $interval, $q, $parse) {\n\n return {\n require: ['?^uiScrollViewport'],\n restrict: 'A',\n transclude: 'element',\n priority: 1000,\n terminal: true,\n link: link\n };\n\n function link($scope, element, $attr, controllers, linker) {\n const match = $attr.uiScroll.match(/^\\s*(\\w+)\\s+in\\s+([(\\w|\\$)\\.]+)\\s*$/);\n if (!match) {\n throw new Error('Expected uiScroll in form of \\'_item_ in _datasource_\\' but got \\'' + $attr.uiScroll + '\\'');\n }\n\n function parseNumber(value, defaultValue, isFloat) {\n if (!isFloat) {\n value = value === null ? defaultValue : Math.floor(value);\n }\n return isNaN(value) ? defaultValue : value;\n }\n\n function parseNumericAttr(value, defaultValue, isFloat) {\n const result = $parse(value)($scope);\n return parseNumber(result, defaultValue, isFloat);\n }\n\n const BUFFER_MIN = 3;\n const BUFFER_DEFAULT = 10;\n const PADDING_MIN = 0.3;\n const PADDING_DEFAULT = 0.5;\n const START_INDEX_DEFAULT = 1;\n const MAX_VIEWPORT_DELAY = 500;\n const VIEWPORT_POLLING_INTERVAL = 50;\n\n let datasource = null;\n const itemName = match[1];\n const datasourceName = match[2];\n const viewportController = controllers[0];\n const bufferSize = Math.max(BUFFER_MIN, parseNumericAttr($attr.bufferSize, BUFFER_DEFAULT));\n const padding = Math.max(PADDING_MIN, parseNumericAttr($attr.padding, PADDING_DEFAULT, true));\n let startIndex = parseNumericAttr($attr.startIndex, START_INDEX_DEFAULT);\n let ridActual = 0; // current data revision id\n let pending = [];\n\n const elementRoutines = new ElementRoutines($injector, $q);\n const buffer = new ScrollBuffer(elementRoutines, bufferSize, startIndex);\n const viewport = new Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding);\n const adapter = new Adapter($scope, $parse, $attr, viewport, buffer, doAdjust, reload);\n\n if (viewportController) {\n viewportController.adapter = adapter;\n }\n\n const isDatasourceValid = () =>\n Object.prototype.toString.call(datasource) === '[object Object]' && typeof datasource.get === 'function';\n\n datasource = $parse(datasourceName)($scope); // try to get datasource on scope\n if (!isDatasourceValid()) {\n datasource = $injector.get(datasourceName); // try to inject datasource as service\n if (!isDatasourceValid()) {\n throw new Error(datasourceName + ' is not a valid datasource');\n }\n }\n\n let onRenderHandlers = [];\n function onRenderHandlersRunner() {\n onRenderHandlers.forEach(handler => handler.run());\n onRenderHandlers = [];\n }\n function persistDatasourceIndex(datasource, propName) {\n let getter;\n // need to postpone min/maxIndexUser processing if the view is empty\n if(angular.isNumber(datasource[propName])) {\n getter = datasource[propName];\n if(angular.isNumber(getter)) {\n onRenderHandlers = onRenderHandlers.filter(handler => handler.id !== propName);\n onRenderHandlers.push({\n id: propName,\n run: () => datasource[propName] = getter\n });\n }\n }\n }\n\n function defineDatasourceIndex(datasource, propName, propUserName) {\n const descriptor = Object.getOwnPropertyDescriptor(datasource, propName);\n if (descriptor && (descriptor.set || descriptor.get)) {\n return;\n }\n let getter;\n persistDatasourceIndex(datasource, propName);\n Object.defineProperty(datasource, propName, {\n set: (value) => {\n getter = value;\n if(pending.length && !buffer.length) {\n persistDatasourceIndex(datasource, propName);\n return;\n }\n buffer[propUserName] = value;\n const topPaddingHeightOld = viewport.topDataPos();\n viewport.adjustPaddings();\n if (propName === 'minIndex') {\n viewport.onAfterMinIndexSet(topPaddingHeightOld);\n }\n },\n get: () => getter\n });\n }\n\n defineDatasourceIndex(datasource, 'minIndex', 'minIndexUser');\n defineDatasourceIndex(datasource, 'maxIndex', 'maxIndexUser');\n\n const fetchNext = (datasource.get.length !== 2) ?\n (success) => datasource.get(buffer.next, bufferSize, success) :\n (success) => {\n datasource.get({\n index: buffer.next,\n append: buffer.length ? buffer[buffer.length - 1].item : void 0,\n count: bufferSize\n }, success);\n };\n\n const fetchPrevious = (datasource.get.length !== 2) ?\n (success) => datasource.get(buffer.first - bufferSize, bufferSize, success) :\n (success) => {\n datasource.get({\n index: buffer.first - bufferSize,\n prepend: buffer.length ? buffer[0].item : void 0,\n count: bufferSize\n }, success);\n };\n\n const initialize = () => {\n let tryCount = 0;\n if(!viewport.applyContainerStyle()) {\n const timer = $interval(() => {\n tryCount++;\n if(viewport.applyContainerStyle()) {\n $interval.cancel(timer);\n doAdjust();\n }\n if(tryCount * VIEWPORT_POLLING_INTERVAL >= MAX_VIEWPORT_DELAY) {\n $interval.cancel(timer);\n throw Error(`ui-scroll directive requires a viewport with non-zero height in ${MAX_VIEWPORT_DELAY}ms`);\n }\n }, VIEWPORT_POLLING_INTERVAL);\n }\n else {\n doAdjust();\n }\n };\n\n /**\n * Build padding elements\n *\n * Calling linker is the only way I found to get access to the tag name of the template\n * to prevent the directive scope from pollution a new scope is created and destroyed\n * right after the builder creation is completed\n */\n linker((clone, scope) => {\n viewport.createPaddingElements(clone[0]);\n // we do not include the clone in the DOM. It means that the nested directives will not\n // be able to reach the parent directives, but in this case it is intentional because we\n // created the clone to access the template tag name\n scope.$destroy();\n clone.remove();\n });\n\n $scope.$on('$destroy', () => {\n unbindEvents();\n viewport.unbind('mousewheel', wheelHandler);\n });\n\n viewport.bind('mousewheel', wheelHandler);\n\n initialize();\n\n /* Private function definitions */\n\n function isInvalid(rid) {\n return (rid && rid !== ridActual) || $scope.$$destroyed;\n }\n\n function bindEvents() {\n viewport.bind('resize', resizeAndScrollHandler);\n viewport.bind('scroll', resizeAndScrollHandler);\n }\n\n function unbindEvents() {\n viewport.unbind('resize', resizeAndScrollHandler);\n viewport.unbind('scroll', resizeAndScrollHandler);\n }\n\n function reload() {\n viewport.resetTopPadding();\n viewport.resetBottomPadding();\n if (arguments.length) {\n startIndex = parseNumber(arguments[0], START_INDEX_DEFAULT, false);\n }\n buffer.reset(startIndex);\n persistDatasourceIndex(datasource, 'minIndex');\n persistDatasourceIndex(datasource, 'maxIndex');\n doAdjust();\n }\n\n function isElementVisible(wrapper) {\n return wrapper.element.height() && wrapper.element[0].offsetParent;\n }\n\n function visibilityWatcher(wrapper) {\n if (isElementVisible(wrapper)) {\n buffer.forEach((item) => {\n if (typeof item.unregisterVisibilityWatcher === 'function') {\n item.unregisterVisibilityWatcher();\n delete item.unregisterVisibilityWatcher;\n }\n });\n if (!pending.length) {\n $timeout(() => doAdjust());\n }\n }\n }\n\n function insertWrapperContent(wrapper, insertAfter) {\n createElement(wrapper, insertAfter, viewport.insertElement);\n if (!isElementVisible(wrapper)) {\n wrapper.unregisterVisibilityWatcher = wrapper.scope.$watch(() => visibilityWatcher(wrapper));\n }\n elementRoutines.hideElement(wrapper); // hide inserted elements before data binding\n }\n\n function createElement(wrapper, insertAfter, insertElement) {\n let promises = null;\n const sibling = (insertAfter > 0) ? buffer[insertAfter - 1].element : undefined;\n linker((clone, scope) => {\n promises = insertElement(clone, sibling);\n wrapper.element = clone;\n wrapper.scope = scope;\n scope[itemName] = wrapper.item;\n });\n // ui-scroll-grid apply\n if (adapter.transform) {\n const tdInitializer = wrapper.scope.uiScrollTdInitializer;\n if (tdInitializer && tdInitializer.linking) {\n adapter.transform(wrapper.scope, wrapper.element);\n } else {\n wrapper.scope.uiScrollTdInitializer = {\n onLink: () => adapter.transform(wrapper.scope, wrapper.element),\n scope: wrapper.scope\n };\n }\n }\n return promises;\n }\n\n function updateDOM() {\n let promises = [];\n const toBePrepended = [];\n const toBeRemoved = [];\n const inserted = [];\n\n buffer.forEach((wrapper, i) => {\n switch (wrapper.op) {\n case 'prepend':\n toBePrepended.unshift(wrapper);\n break;\n case 'append':\n insertWrapperContent(wrapper, i);\n wrapper.op = 'none';\n inserted.push(wrapper);\n break;\n case 'insert':\n promises = promises.concat(createElement(wrapper, i, viewport.insertElementAnimated));\n wrapper.op = 'none';\n inserted.push(wrapper);\n break;\n case 'remove':\n toBeRemoved.push(wrapper);\n }\n });\n\n toBeRemoved.forEach((wrapper) => promises = promises.concat(viewport.removeItem(wrapper)));\n\n if (toBePrepended.length)\n toBePrepended.forEach((wrapper) => {\n insertWrapperContent(wrapper);\n wrapper.op = 'none';\n });\n\n buffer.forEach((item, i) => item.scope.$index = buffer.first + i);\n\n return {\n prepended: toBePrepended,\n removed: toBeRemoved,\n inserted: inserted,\n animated: promises\n };\n\n }\n\n function updatePaddings(rid, updates) {\n // schedule another doAdjust after animation completion\n if (updates.animated.length) {\n $q.all(updates.animated).then(() => {\n viewport.adjustPaddings();\n doAdjust(rid);\n });\n } else {\n viewport.adjustPaddings();\n }\n }\n\n function enqueueFetch(rid, updates) {\n if (viewport.shouldLoadBottom()) {\n if (!updates || buffer.effectiveHeight(updates.inserted) > 0) {\n // this means that at least one item appended in the last batch has height > 0\n if (pending.push(true) === 1) {\n adapter.loading(true);\n fetch(rid);\n }\n }\n } else if (viewport.shouldLoadTop()) {\n if ((!updates || buffer.effectiveHeight(updates.prepended) > 0) || pending[0]) {\n // this means that at least one item appended in the last batch has height > 0\n // pending[0] = true means that previous fetch was appending. We need to force at least one prepend\n // BTW there will always be at least 1 element in the pending array because bottom is fetched first\n if (pending.push(false) === 1) {\n adapter.loading(true);\n fetch(rid);\n }\n }\n }\n }\n\n function processUpdates() {\n const updates = updateDOM();\n\n // We need the item bindings to be processed before we can do adjustments\n !$scope.$$phase && !$rootScope.$$phase && $scope.$digest();\n\n updates.inserted.forEach(w => elementRoutines.showElement(w));\n updates.prepended.forEach(w => elementRoutines.showElement(w));\n return updates;\n }\n\n function doAdjust(rid) {\n if (!rid) { // dismiss pending requests\n pending = [];\n rid = ++ridActual;\n }\n\n const updates = processUpdates();\n\n if (isInvalid(rid)) {\n return;\n }\n\n updatePaddings(rid, updates);\n enqueueFetch(rid);\n\n if (!pending.length) {\n adapter.calculateProperties();\n }\n }\n\n function doAdjustAfterFetch(rid) {\n const updates = processUpdates();\n\n 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\t\t__webpack_require__.r(ns);\n \t\tObject.defineProperty(ns, 'default', { enumerable: true, value: value });\n \t\tif(mode & 2 && typeof value != 'string') for(var key in value) __webpack_require__.d(ns, key, function(key) { return value[key]; }.bind(null, key));\n \t\treturn ns;\n \t};\n\n \t// getDefaultExport function for compatibility with non-harmony modules\n \t__webpack_require__.n = function(module) {\n \t\tvar getter = module && module.__esModule ?\n \t\t\tfunction getDefault() { return module['default']; } :\n \t\t\tfunction getModuleExports() { return module; };\n \t\t__webpack_require__.d(getter, 'a', getter);\n \t\treturn getter;\n \t};\n\n \t// Object.prototype.hasOwnProperty.call\n \t__webpack_require__.o = function(object, property) { return Object.prototype.hasOwnProperty.call(object, property); };\n\n \t// __webpack_public_path__\n \t__webpack_require__.p = \"\";\n\n\n \t// Load entry module and return exports\n \treturn __webpack_require__(__webpack_require__.s = 1);\n","/*!\r\n globals: angular, window\r\n List of used element methods available in JQuery but not in JQuery Lite\r\n element.before(elem)\r\n element.height()\r\n element.outerHeight(true)\r\n element.height(value) = only for Top/Bottom padding elements\r\n element.scrollTop()\r\n element.scrollTop(value)\r\n */\r\n\r\nexport default class JQLiteExtras {\r\n\r\n registerFor(element) {\r\n let convertToPx, css, getStyle, isWindow;\r\n // angular implementation blows up if elem is the window\r\n css = angular.element.prototype.css;\r\n\r\n element.prototype.css = function (name, value) {\r\n let self = this;\r\n let elem = self[0];\r\n if (!(!elem || elem.nodeType === 3 || elem.nodeType === 8 || !elem.style)) {\r\n return css.call(self, name, value);\r\n }\r\n };\r\n\r\n // as defined in angularjs v1.0.5\r\n isWindow = (obj) => obj && obj.document && obj.location && obj.alert && obj.setInterval;\r\n\r\n function scrollTo(self, direction, value) {\r\n let elem = self[0];\r\n let [method, prop, preserve] = {\r\n top: [\r\n 'scrollTop',\r\n 'pageYOffset',\r\n 'scrollLeft'\r\n ],\r\n left: [\r\n 'scrollLeft',\r\n 'pageXOffset',\r\n 'scrollTop'\r\n ]\r\n }[direction];\r\n\r\n const isValueDefined = typeof value !== 'undefined';\r\n if (isWindow(elem)) {\r\n if (isValueDefined) {\r\n return elem.scrollTo(self[preserve].call(self), value);\r\n }\r\n return (prop in elem) ? elem[prop] : elem.document.documentElement[method];\r\n } else {\r\n if (isValueDefined) {\r\n elem[method] = value;\r\n }\r\n return elem[method];\r\n }\r\n }\r\n\r\n if (window.getComputedStyle) {\r\n getStyle = (elem) => window.getComputedStyle(elem, null);\r\n convertToPx = (elem, value) => parseFloat(value);\r\n } else {\r\n getStyle = (elem) => elem.currentStyle;\r\n convertToPx = (elem, value) => {\r\n let left, result, rs, rsLeft, style;\r\n let core_pnum = /[+-]?(?:\\d*\\.|)\\d+(?:[eE][+-]?\\d+|)/.source;\r\n let rnumnonpx = new RegExp('^(' + core_pnum + ')(?!px)[a-z%]+$', 'i');\r\n\r\n if (!rnumnonpx.test(value)) {\r\n return parseFloat(value);\r\n }\r\n\r\n // ported from JQuery\r\n style = elem.style;\r\n left = style.left;\r\n rs = elem.runtimeStyle;\r\n rsLeft = rs && rs.left;\r\n if (rs) {\r\n rs.left = style.left;\r\n }\r\n // put in the new values to get a computed style out\r\n style.left = value;\r\n result = style.pixelLeft;\r\n style.left = left;\r\n if (rsLeft) {\r\n rs.left = rsLeft;\r\n }\r\n return result;\r\n };\r\n }\r\n\r\n function getMeasurements(elem, measure) {\r\n let base, borderA, borderB, computedMarginA, computedMarginB, computedStyle, dirA, dirB, marginA, marginB, paddingA, paddingB;\r\n\r\n if (isWindow(elem)) {\r\n base = document.documentElement[{height: 'clientHeight', width: 'clientWidth'}[measure]];\r\n\r\n return {\r\n base: base,\r\n padding: 0,\r\n border: 0,\r\n margin: 0\r\n };\r\n }\r\n\r\n // Start with offset property\r\n [\r\n base,\r\n dirA,\r\n dirB\r\n ] = {\r\n width: [\r\n elem.offsetWidth,\r\n 'Left',\r\n 'Right'\r\n ],\r\n height: [\r\n elem.offsetHeight,\r\n 'Top',\r\n 'Bottom'\r\n ]\r\n }[measure];\r\n\r\n computedStyle = getStyle(elem);\r\n paddingA = convertToPx(elem, computedStyle['padding' + dirA]) || 0;\r\n paddingB = convertToPx(elem, computedStyle['padding' + dirB]) || 0;\r\n borderA = convertToPx(elem, computedStyle['border' + dirA + 'Width']) || 0;\r\n borderB = convertToPx(elem, computedStyle['border' + dirB + 'Width']) || 0;\r\n computedMarginA = computedStyle['margin' + dirA];\r\n computedMarginB = computedStyle['margin' + dirB];\r\n\r\n // I do not care for width for now, so this hack is irrelevant\r\n // if ( !supportsPercentMargin )\r\n // computedMarginA = hackPercentMargin( elem, computedStyle, computedMarginA )\r\n // computedMarginB = hackPercentMargin( elem, computedStyle, computedMarginB )\r\n marginA = convertToPx(elem, computedMarginA) || 0;\r\n marginB = convertToPx(elem, computedMarginB) || 0;\r\n\r\n return {\r\n base: base,\r\n padding: paddingA + paddingB,\r\n border: borderA + borderB,\r\n margin: marginA + marginB\r\n };\r\n }\r\n\r\n function getWidthHeight(elem, direction, measure) {\r\n let computedStyle, result;\r\n\r\n let measurements = getMeasurements(elem, direction);\r\n\r\n if (measurements.base > 0) {\r\n return {\r\n base: measurements.base - measurements.padding - measurements.border,\r\n outer: measurements.base,\r\n outerfull: measurements.base + measurements.margin\r\n }[measure];\r\n }\r\n\r\n // Fall back to computed then uncomputed css if necessary\r\n computedStyle = getStyle(elem);\r\n result = computedStyle[direction];\r\n\r\n if (result < 0 || result === null) {\r\n result = elem.style[direction] || 0;\r\n }\r\n\r\n // Normalize \"\", auto, and prepare for extra\r\n result = parseFloat(result) || 0;\r\n\r\n return {\r\n base: result - measurements.padding - measurements.border,\r\n outer: result,\r\n outerfull: result + measurements.padding + measurements.border + measurements.margin\r\n }[measure];\r\n }\r\n\r\n // define missing methods\r\n return angular.forEach({\r\n before(newElem) {\r\n var children, elem, i, j, parent, ref, self;\r\n self = this;\r\n elem = self[0];\r\n parent = self.parent();\r\n children = parent.contents();\r\n if (children[0] === elem) {\r\n return parent.prepend(newElem);\r\n } else {\r\n for (i = j = 1, ref = children.length - 1; 1 <= ref ? j <= ref : j >= ref; i = 1 <= ref ? ++j : --j) {\r\n if (children[i] === elem) {\r\n angular.element(children[i - 1]).after(newElem);\r\n return;\r\n }\r\n }\r\n throw new Error('invalid DOM structure ' + elem.outerHTML);\r\n }\r\n },\r\n height (value){\r\n var self;\r\n self = this;\r\n if (typeof value !== 'undefined') {\r\n if (angular.isNumber(value)) {\r\n value = value + 'px';\r\n }\r\n return css.call(self, 'height', value);\r\n } else {\r\n return getWidthHeight(this[0], 'height', 'base');\r\n }\r\n },\r\n outerHeight(option) {\r\n return getWidthHeight(this[0], 'height', option ? 'outerfull' : 'outer');\r\n },\r\n outerWidth(option) {\r\n return getWidthHeight(this[0], 'width', option ? 'outerfull' : 'outer');\r\n },\r\n\r\n /*\r\n The offset setter method is not implemented\r\n */\r\n offset(value) {\r\n let docElem, win;\r\n let self = this;\r\n let box = {\r\n top: 0,\r\n left: 0\r\n };\r\n let elem = self[0];\r\n let doc = elem && elem.ownerDocument;\r\n\r\n if (arguments.length) {\r\n if (value === undefined) {\r\n return self;\r\n }\r\n // TODO: implement setter\r\n throw new Error('offset setter method is not implemented');\r\n }\r\n\r\n if (!doc) {\r\n return;\r\n }\r\n\r\n docElem = doc.documentElement;\r\n\r\n // TODO: Make sure it's not a disconnected DOM node\r\n\r\n if (elem.getBoundingClientRect != null) {\r\n box = elem.getBoundingClientRect();\r\n }\r\n\r\n win = doc.defaultView || doc.parentWindow;\r\n\r\n return {\r\n top: box.top + (win.pageYOffset || docElem.scrollTop) - (docElem.clientTop || 0),\r\n left: box.left + (win.pageXOffset || docElem.scrollLeft) - (docElem.clientLeft || 0)\r\n };\r\n },\r\n scrollTop(value) {\r\n return scrollTo(this, 'top', value);\r\n },\r\n scrollLeft(value) {\r\n return scrollTo(this, 'left', value);\r\n }\r\n }, (value, key) => {\r\n if (!element.prototype[key]) {\r\n return element.prototype[key] = value;\r\n }\r\n });\r\n }\r\n\r\n}\r\n","const hideClassToken = 'ng-ui-scroll-hide';\r\n\r\nexport default class ElementRoutines {\r\n\r\n static addCSSRules() {\r\n const selector = '.' + hideClassToken;\r\n const rules = 'display: none';\r\n const sheet = document.styleSheets[0];\r\n let index;\r\n try {\r\n index = sheet.cssRules.length;\r\n } catch (err) {\r\n index = 0;\r\n }\r\n if('insertRule' in sheet) {\r\n sheet.insertRule(selector + '{' + rules + '}', index);\r\n }\r\n else if('addRule' in sheet) {\r\n sheet.addRule(selector, rules, index);\r\n }\r\n }\r\n\r\n constructor($injector, $q) {\r\n this.$animate = ($injector.has && $injector.has('$animate')) ? $injector.get('$animate') : null;\r\n this.isAngularVersionLessThen1_3 = angular.version.major === 1 && angular.version.minor < 3;\r\n this.$q = $q;\r\n }\r\n\r\n hideElement(wrapper) {\r\n wrapper.element.addClass(hideClassToken);\r\n }\r\n\r\n showElement(wrapper) {\r\n wrapper.element.removeClass(hideClassToken);\r\n }\r\n\r\n insertElement(newElement, previousElement) {\r\n previousElement.after(newElement);\r\n return [];\r\n }\r\n\r\n removeElement(wrapper) {\r\n wrapper.element.remove();\r\n wrapper.scope.$destroy();\r\n return [];\r\n }\r\n\r\n insertElementAnimated(newElement, previousElement) {\r\n if (!this.$animate) {\r\n return this.insertElement(newElement, previousElement);\r\n }\r\n\r\n if (this.isAngularVersionLessThen1_3) {\r\n const deferred = this.$q.defer();\r\n // no need for parent - previous element is never null\r\n this.$animate.enter(newElement, null, previousElement, () => deferred.resolve());\r\n\r\n return [deferred.promise];\r\n }\r\n\r\n // no need for parent - previous element is never null\r\n return [this.$animate.enter(newElement, null, previousElement)];\r\n }\r\n\r\n removeElementAnimated(wrapper) {\r\n if (!this.$animate) {\r\n return this.removeElement(wrapper);\r\n }\r\n\r\n if (this.isAngularVersionLessThen1_3) {\r\n const deferred = this.$q.defer();\r\n this.$animate.leave(wrapper.element, () => {\r\n wrapper.scope.$destroy();\r\n return deferred.resolve();\r\n });\r\n\r\n return [deferred.promise];\r\n }\r\n\r\n return [(this.$animate.leave(wrapper.element)).then(() => wrapper.scope.$destroy())];\r\n }\r\n}","export default function ScrollBuffer(elementRoutines, bufferSize, startIndex) {\r\n const buffer = Object.create(Array.prototype);\r\n\r\n angular.extend(buffer, {\r\n size: bufferSize,\r\n\r\n reset(startIndex) {\r\n buffer.remove(0, buffer.length);\r\n buffer.eof = false;\r\n buffer.bof = false;\r\n buffer.first = startIndex;\r\n buffer.next = startIndex;\r\n buffer.minIndex = startIndex;\r\n buffer.maxIndex = startIndex;\r\n buffer.minIndexUser = null;\r\n buffer.maxIndexUser = null;\r\n },\r\n\r\n append(items) {\r\n items.forEach((item) => {\r\n ++buffer.next;\r\n buffer.insert('append', item);\r\n });\r\n buffer.maxIndex = buffer.eof ? buffer.next - 1 : Math.max(buffer.next - 1, buffer.maxIndex);\r\n },\r\n\r\n prepend(items) {\r\n items.reverse().forEach((item) => {\r\n --buffer.first;\r\n buffer.insert('prepend', item);\r\n });\r\n buffer.minIndex = buffer.bof ? buffer.minIndex = buffer.first : Math.min(buffer.first, buffer.minIndex);\r\n },\r\n\r\n /**\r\n * inserts wrapped element in the buffer\r\n * the first argument is either operation keyword (see below) or a number for operation 'insert'\r\n * for insert the number is the index for the buffer element the new one have to be inserted after\r\n * operations: 'append', 'prepend', 'insert', 'remove', 'update', 'none'\r\n */\r\n insert(operation, item, isTop) {\r\n const wrapper = {\r\n item: item\r\n };\r\n\r\n if (operation % 1 === 0) {// it is an insert\r\n wrapper.op = 'insert';\r\n buffer.splice(operation, 0, wrapper);\r\n if(isTop) {\r\n buffer.first--;\r\n }\r\n else {\r\n buffer.next++;\r\n }\r\n } else {\r\n wrapper.op = operation;\r\n switch (operation) {\r\n case 'append':\r\n buffer.push(wrapper);\r\n break;\r\n case 'prepend':\r\n buffer.unshift(wrapper);\r\n break;\r\n }\r\n }\r\n },\r\n\r\n // removes elements from buffer\r\n remove(arg1, arg2) {\r\n if (angular.isNumber(arg1)) {\r\n // removes items from arg1 (including) through arg2 (excluding)\r\n for (let i = arg1; i < arg2; i++) {\r\n elementRoutines.removeElement(buffer[i]);\r\n }\r\n return buffer.splice(arg1, arg2 - arg1);\r\n }\r\n // removes single item(wrapper) from the buffer\r\n buffer.splice(buffer.indexOf(arg1), 1);\r\n if(arg1._op === 'isTop' && buffer.first === this.getAbsMinIndex()) {\r\n this.incrementMinIndex();\r\n }\r\n else {\r\n this.decrementMaxIndex();\r\n }\r\n if(arg1._op === 'isTop') {\r\n buffer.first++;\r\n }\r\n else {\r\n buffer.next--;\r\n }\r\n if(!buffer.length) {\r\n buffer.first = 1;\r\n buffer.next = 1;\r\n }\r\n\r\n return elementRoutines.removeElementAnimated(arg1);\r\n },\r\n\r\n incrementMinIndex() {\r\n if(buffer.minIndexUser !== null) {\r\n if(buffer.minIndex > buffer.minIndexUser) {\r\n buffer.minIndexUser++;\r\n return;\r\n }\r\n if(buffer.minIndex === buffer.minIndexUser) {\r\n buffer.minIndexUser++;\r\n }\r\n }\r\n buffer.minIndex++;\r\n },\r\n\r\n decrementMaxIndex() {\r\n if(buffer.maxIndexUser !== null && buffer.maxIndex <= buffer.maxIndexUser) {\r\n buffer.maxIndexUser--;\r\n }\r\n buffer.maxIndex--;\r\n },\r\n\r\n getAbsMinIndex() {\r\n if(buffer.minIndexUser !== null) {\r\n return Math.min(buffer.minIndexUser, buffer.minIndex);\r\n }\r\n return buffer.minIndex;\r\n },\r\n\r\n getAbsMaxIndex() {\r\n if(buffer.maxIndexUser !== null) {\r\n return Math.max(buffer.maxIndexUser, buffer.maxIndex);\r\n }\r\n return buffer.maxIndex;\r\n },\r\n\r\n effectiveHeight(elements) {\r\n if (!elements.length) {\r\n return 0;\r\n }\r\n let top = Number.MAX_VALUE;\r\n let bottom = Number.NEGATIVE_INFINITY;\r\n elements.forEach((wrapper) => {\r\n if (wrapper.element[0].offsetParent) {\r\n // element style is not display:none\r\n top = Math.min(top, wrapper.element.offset().top);\r\n bottom = Math.max(bottom, wrapper.element.offset().top + wrapper.element.outerHeight(true));\r\n }\r\n });\r\n return Math.max(0, bottom - top);\r\n }\r\n\r\n });\r\n\r\n buffer.reset(startIndex);\r\n\r\n return buffer;\r\n}\r\n","// Can't just extend the Array, due to Babel does not support built-in classes extending\r\n// This solution was taken from https://stackoverflow.com/questions/46897414/es6-class-extends-array-workaround-for-es5-babel-transpile\r\nclass CacheProto {\r\n add(item) {\r\n for (let i = this.length - 1; i >= 0; i--) {\r\n if (this[i].index === item.scope.$index) {\r\n this[i].height = item.element.outerHeight();\r\n return;\r\n }\r\n }\r\n this.push({\r\n index: item.scope.$index,\r\n height: item.element.outerHeight()\r\n });\r\n this.sort((a, b) => ((a.index < b.index) ? -1 : ((a.index > b.index) ? 1 : 0)));\r\n }\r\n\r\n remove(argument, _isTop) {\r\n const index = argument % 1 === 0 ? argument : argument.scope.$index;\r\n const isTop = argument % 1 === 0 ? _isTop : argument._op === 'isTop';\r\n for (let i = this.length - 1; i >= 0; i--) {\r\n if (this[i].index === index) {\r\n this.splice(i, 1);\r\n break;\r\n }\r\n }\r\n if(!isTop) {\r\n for (let i = this.length - 1; i >= 0; i--) {\r\n if (this[i].index > index) {\r\n this[i].index--;\r\n }\r\n }\r\n }\r\n }\r\n\r\n clear() {\r\n this.length = 0;\r\n }\r\n}\r\n\r\nfunction Cache() {\r\n const instance = [];\r\n instance.push.apply(instance, arguments);\r\n Object.setPrototypeOf(instance, Cache.prototype);\r\n return instance;\r\n}\r\nCache.prototype = Object.create(Array.prototype);\r\nObject.getOwnPropertyNames(CacheProto.prototype).forEach(methodName =>\r\n Cache.prototype[methodName] = CacheProto.prototype[methodName]\r\n);\r\n\r\nfunction generateElement(template) {\r\n if(template.nodeType !== Node.ELEMENT_NODE) {\r\n throw new Error('ui-scroll directive requires an Element node for templating the view');\r\n }\r\n let element;\r\n switch (template.tagName.toLowerCase()) {\r\n case 'dl':\r\n throw new Error(`ui-scroll directive does not support <${template.tagName}> as a repeating tag: ${template.outerHTML}`);\r\n case 'tr':\r\n let table = angular.element('
    ');\r\n element = table.find('tr');\r\n break;\r\n case 'li':\r\n element = angular.element('
  • ');\r\n break;\r\n default:\r\n element = angular.element('
    ');\r\n }\r\n return element;\r\n}\r\n\r\nclass Padding {\r\n constructor(template) {\r\n this.element = generateElement(template);\r\n this.cache = new Cache();\r\n }\r\n\r\n height() {\r\n return this.element.height.apply(this.element, arguments);\r\n }\r\n}\r\n\r\nexport default Padding;","import Padding from './padding';\r\n\r\nexport default function Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding) {\r\n let topPadding = null;\r\n let bottomPadding = null;\r\n const viewport = viewportController && viewportController.viewport ? viewportController.viewport : angular.element(window);\r\n const container = viewportController && viewportController.container ? viewportController.container : undefined;\r\n const scope = viewportController && viewportController.scope ? viewportController.scope : $rootScope;\r\n\r\n viewport.css({\r\n 'overflow-anchor': 'none',\r\n 'overflow-y': 'auto',\r\n 'display': 'block'\r\n });\r\n\r\n function bufferPadding() {\r\n return viewport.outerHeight() * padding; // some extra space to initiate preload\r\n }\r\n\r\n angular.extend(viewport, {\r\n getScope() {\r\n return scope;\r\n },\r\n\r\n createPaddingElements(template) {\r\n topPadding = new Padding(template);\r\n bottomPadding = new Padding(template);\r\n element.before(topPadding.element);\r\n element.after(bottomPadding.element);\r\n topPadding.height(0);\r\n bottomPadding.height(0);\r\n },\r\n\r\n applyContainerStyle() {\r\n if (!container) {\r\n return true;\r\n }\r\n if(container !== viewport) {\r\n viewport.css('height', window.getComputedStyle(container[0]).height);\r\n }\r\n return viewport.height() > 0;\r\n },\r\n\r\n bottomDataPos() {\r\n let scrollHeight = viewport[0].scrollHeight;\r\n scrollHeight = scrollHeight != null ? scrollHeight : viewport[0].document.documentElement.scrollHeight;\r\n return scrollHeight - bottomPadding.height();\r\n },\r\n\r\n topDataPos() {\r\n return topPadding.height();\r\n },\r\n\r\n bottomVisiblePos() {\r\n return viewport.scrollTop() + viewport.outerHeight();\r\n },\r\n\r\n topVisiblePos() {\r\n return viewport.scrollTop();\r\n },\r\n\r\n insertElement(e, sibling) {\r\n return elementRoutines.insertElement(e, sibling || topPadding.element);\r\n },\r\n\r\n insertElementAnimated(e, sibling) {\r\n return elementRoutines.insertElementAnimated(e, sibling || topPadding.element);\r\n },\r\n\r\n shouldLoadBottom() {\r\n return !buffer.eof && viewport.bottomDataPos() < viewport.bottomVisiblePos() + bufferPadding();\r\n },\r\n\r\n clipBottom() {\r\n // clip the invisible items off the bottom\r\n let overage = 0;\r\n let overageHeight = 0;\r\n let itemHeight = 0;\r\n let emptySpaceHeight = viewport.bottomDataPos() - viewport.bottomVisiblePos() - bufferPadding();\r\n\r\n for (let i = buffer.length - 1; i >= 0; i--) {\r\n itemHeight = buffer[i].element.outerHeight(true);\r\n if (overageHeight + itemHeight > emptySpaceHeight) {\r\n break;\r\n }\r\n bottomPadding.cache.add(buffer[i]);\r\n overageHeight += itemHeight;\r\n overage++;\r\n }\r\n\r\n if (overage > 0) {\r\n buffer.eof = false;\r\n buffer.remove(buffer.length - overage, buffer.length);\r\n buffer.next -= overage;\r\n viewport.adjustPaddings();\r\n }\r\n },\r\n\r\n shouldLoadTop() {\r\n return !buffer.bof && (viewport.topDataPos() > viewport.topVisiblePos() - bufferPadding());\r\n },\r\n\r\n clipTop() {\r\n // clip the invisible items off the top\r\n let overage = 0;\r\n let overageHeight = 0;\r\n let itemHeight = 0;\r\n let emptySpaceHeight = viewport.topVisiblePos() - viewport.topDataPos() - bufferPadding();\r\n\r\n for (let i = 0; i < buffer.length; i++) {\r\n itemHeight = buffer[i].element.outerHeight(true);\r\n if (overageHeight + itemHeight > emptySpaceHeight) {\r\n break;\r\n }\r\n topPadding.cache.add(buffer[i]);\r\n overageHeight += itemHeight;\r\n overage++;\r\n }\r\n\r\n if (overage > 0) {\r\n // we need to adjust top padding element before items are removed from top\r\n // to avoid strange behaviour of scroll bar during remove top items when we are at the very bottom\r\n topPadding.height(topPadding.height() + overageHeight);\r\n buffer.bof = false;\r\n buffer.remove(0, overage);\r\n buffer.first += overage;\r\n }\r\n },\r\n\r\n adjustPaddings() {\r\n if (!buffer.length) {\r\n return;\r\n }\r\n\r\n // precise heights calculation based on items that are in buffer or that were in buffer once\r\n const visibleItemsHeight = buffer.reduce((summ, item) => summ + item.element.outerHeight(true), 0);\r\n\r\n let topPaddingHeight = 0, topCount = 0;\r\n topPadding.cache.forEach(item => {\r\n if(item.index < buffer.first) {\r\n topPaddingHeight += item.height;\r\n topCount++;\r\n }\r\n });\r\n\r\n let bottomPaddingHeight = 0, bottomCount = 0;\r\n bottomPadding.cache.forEach(item => {\r\n if(item.index >= buffer.next) {\r\n bottomPaddingHeight += item.height;\r\n bottomCount++;\r\n }\r\n });\r\n\r\n const totalHeight = visibleItemsHeight + topPaddingHeight + bottomPaddingHeight;\r\n const averageItemHeight = totalHeight / (topCount + bottomCount + buffer.length);\r\n\r\n // average heights calculation, items that have never been reached\r\n let adjustTopPadding = buffer.minIndexUser !== null && buffer.minIndex > buffer.minIndexUser;\r\n let adjustBottomPadding = buffer.maxIndexUser !== null && buffer.maxIndex < buffer.maxIndexUser;\r\n let topPaddingHeightAdd = adjustTopPadding ? (buffer.minIndex - buffer.minIndexUser) * averageItemHeight : 0;\r\n let bottomPaddingHeightAdd = adjustBottomPadding ? (buffer.maxIndexUser - buffer.maxIndex) * averageItemHeight : 0;\r\n\r\n // paddings combine adjustment\r\n topPadding.height(topPaddingHeight + topPaddingHeightAdd);\r\n bottomPadding.height(bottomPaddingHeight + bottomPaddingHeightAdd);\r\n },\r\n\r\n onAfterMinIndexSet(topPaddingHeightOld) {\r\n // additional scrollTop adjustment in case of datasource.minIndex external set\r\n if (buffer.minIndexUser !== null && buffer.minIndex > buffer.minIndexUser) {\r\n let diff = topPadding.height() - topPaddingHeightOld;\r\n viewport.scrollTop(viewport.scrollTop() + diff);\r\n while((diff -= viewport.scrollTop()) > 0) {\r\n bottomPadding.height(bottomPadding.height() + diff);\r\n viewport.scrollTop(viewport.scrollTop() + diff);\r\n }\r\n }\r\n },\r\n\r\n onAfterPrepend(updates) {\r\n if (!updates.prepended.length)\r\n return;\r\n const height = buffer.effectiveHeight(updates.prepended);\r\n const paddingHeight = topPadding.height() - height;\r\n if (paddingHeight >= 0) {\r\n topPadding.height(paddingHeight);\r\n }\r\n else {\r\n topPadding.height(0);\r\n viewport.scrollTop(viewport.scrollTop() - paddingHeight);\r\n }\r\n },\r\n\r\n resetTopPadding() {\r\n topPadding.height(0);\r\n topPadding.cache.clear();\r\n },\r\n\r\n resetBottomPadding() {\r\n bottomPadding.height(0);\r\n bottomPadding.cache.clear();\r\n },\r\n\r\n removeCacheItem(item, isTop) {\r\n topPadding.cache.remove(item, isTop);\r\n bottomPadding.cache.remove(item, isTop);\r\n },\r\n\r\n removeItem(item) {\r\n this.removeCacheItem(item);\r\n return buffer.remove(item);\r\n }\r\n });\r\n\r\n return viewport;\r\n}\r\n","class Adapter {\r\n\r\n constructor($scope, $parse, $attr, viewport, buffer, doAdjust, reload) {\r\n this.$parse = $parse;\r\n this.$attr = $attr;\r\n this.viewport = viewport;\r\n this.buffer = buffer;\r\n\r\n this.doAdjust = doAdjust;\r\n this.reload = reload;\r\n\r\n this.isLoading = false;\r\n this.disabled = false;\r\n\r\n const viewportScope = viewport.getScope();\r\n this.startScope = viewportScope.$parent ? viewportScope : $scope;\r\n\r\n this.publicContext = {};\r\n this.assignAdapter($attr.adapter);\r\n this.generatePublicContext();\r\n }\r\n\r\n assignAdapter(adapterAttr) {\r\n if (!adapterAttr || !(adapterAttr = adapterAttr.replace(/^\\s+|\\s+$/gm, ''))) {\r\n return;\r\n }\r\n let adapterOnScope;\r\n\r\n try {\r\n this.$parse(adapterAttr).assign(this.startScope, {});\r\n adapterOnScope = this.$parse(adapterAttr)(this.startScope);\r\n }\r\n catch (error) {\r\n error.message = `Angular ui-scroll Adapter assignment exception.\\n` +\r\n `Can't parse \"${adapterAttr}\" expression.\\n` +\r\n error.message;\r\n throw error;\r\n }\r\n\r\n angular.extend(adapterOnScope, this.publicContext);\r\n this.publicContext = adapterOnScope;\r\n }\r\n\r\n generatePublicContext() {\r\n // these methods will be accessible out of ui-scroll via user defined adapter\r\n const publicMethods = ['reload', 'applyUpdates', 'append', 'prepend', 'isBOF', 'isEOF', 'isEmpty'];\r\n for (let i = publicMethods.length - 1; i >= 0; i--) {\r\n this.publicContext[publicMethods[i]] = this[publicMethods[i]].bind(this);\r\n }\r\n\r\n // these read-only props will be accessible out of ui-scroll via user defined adapter\r\n const publicProps = ['isLoading', 'topVisible', 'topVisibleElement', 'topVisibleScope', 'bottomVisible', 'bottomVisibleElement', 'bottomVisibleScope'];\r\n for (let i = publicProps.length - 1; i >= 0; i--) {\r\n let property, attr = this.$attr[publicProps[i]];\r\n Object.defineProperty(this, publicProps[i], {\r\n get: () => property,\r\n set: (value) => {\r\n property = value;\r\n this.publicContext[publicProps[i]] = value;\r\n if (attr) {\r\n this.$parse(attr).assign(this.startScope, value);\r\n }\r\n }\r\n });\r\n }\r\n\r\n // non-read-only public property\r\n Object.defineProperty(this.publicContext, 'disabled', {\r\n get: () => this.disabled,\r\n set: (value) => (!(this.disabled = value)) ? this.doAdjust() : null\r\n });\r\n }\r\n\r\n loading(value) {\r\n this.isLoading = value;\r\n }\r\n\r\n isBOF() {\r\n return this.buffer.bof;\r\n }\r\n\r\n isEOF() {\r\n return this.buffer.eof;\r\n }\r\n\r\n isEmpty() {\r\n return !this.buffer.length;\r\n }\r\n\r\n append(newItems) {\r\n this.buffer.append(newItems);\r\n this.doAdjust();\r\n this.viewport.clipTop();\r\n this.viewport.clipBottom();\r\n }\r\n\r\n prepend(newItems) {\r\n this.buffer.prepend(newItems);\r\n this.doAdjust();\r\n this.viewport.clipTop();\r\n this.viewport.clipBottom();\r\n }\r\n\r\n applyUpdates(arg1, arg2) {\r\n if (typeof arg1 === 'function') {\r\n this.applyUpdatesFunc(arg1);\r\n } else {\r\n this.applyUpdatesIndex(arg1, arg2);\r\n }\r\n this.doAdjust();\r\n }\r\n\r\n applyUpdatesFunc(cb) {\r\n this.buffer.slice(0).forEach((wrapper) => {\r\n // we need to do it on the buffer clone, because buffer content\r\n // may change as we iterate through\r\n this.applyUpdate(wrapper, cb(wrapper.item, wrapper.scope, wrapper.element));\r\n });\r\n }\r\n\r\n applyUpdatesIndex(index, newItems) {\r\n if (index % 1 !== 0) {\r\n throw new Error('applyUpdates - ' + index + ' is not a valid index (should be an integer)');\r\n }\r\n const _index = index - this.buffer.first;\r\n\r\n // apply updates only within buffer\r\n if (_index >= 0 && _index < this.buffer.length) {\r\n this.applyUpdate(this.buffer[_index], newItems);\r\n }\r\n // out-of-buffer case: deletion may affect Paddings\r\n else if(index >= this.buffer.getAbsMinIndex() && index <= this.buffer.getAbsMaxIndex()) {\r\n if(angular.isArray(newItems) && !newItems.length) {\r\n this.viewport.removeCacheItem(index, index === this.buffer.minIndex);\r\n if(index === this.buffer.getAbsMinIndex()) {\r\n this.buffer.incrementMinIndex();\r\n }\r\n else {\r\n this.buffer.decrementMaxIndex();\r\n }\r\n }\r\n }\r\n }\r\n\r\n applyUpdate(wrapper, newItems) {\r\n if (!angular.isArray(newItems)) {\r\n return;\r\n }\r\n let position = this.buffer.indexOf(wrapper);\r\n if (!newItems.reverse().some(newItem => newItem === wrapper.item)) {\r\n wrapper.op = 'remove';\r\n if(position === 0 && !newItems.length) {\r\n wrapper._op = 'isTop'; // to catch \"first\" edge case on remove\r\n }\r\n }\r\n newItems.forEach((newItem) => {\r\n if (newItem === wrapper.item) {\r\n position--;\r\n } else {\r\n // 3 parameter (isTop) is to catch \"first\" edge case on insert\r\n this.buffer.insert(position + 1, newItem, position === -1);\r\n }\r\n });\r\n }\r\n\r\n calculateProperties() {\r\n let rowTop = null, topHeight = 0;\r\n let topDone = false, bottomDone = false;\r\n const length = this.buffer.length;\r\n\r\n for (let i = 0; i < length; i++) {\r\n const item = this.buffer[i];\r\n const itemTop = item.element.offset().top;\r\n\r\n if (rowTop !== itemTop) { // a new row condition\r\n const itemHeight = item.element.outerHeight(true);\r\n const top = this.viewport.topDataPos() + topHeight + itemHeight;\r\n\r\n if (!topDone && top > this.viewport.topVisiblePos()) {\r\n topDone = true;\r\n this['topVisible'] = item.item;\r\n this['topVisibleElement'] = item.element;\r\n this['topVisibleScope'] = item.scope;\r\n }\r\n if (!bottomDone && (top >= this.viewport.bottomVisiblePos() || (i === length - 1 && this.isEOF()))) {\r\n bottomDone = true;\r\n this['bottomVisible'] = item.item;\r\n this['bottomVisibleElement'] = item.element;\r\n this['bottomVisibleScope'] = item.scope;\r\n }\r\n topHeight += itemHeight;\r\n }\r\n rowTop = itemTop;\r\n\r\n if (topDone && bottomDone) {\r\n break;\r\n }\r\n }\r\n }\r\n\r\n}\r\n\r\nexport default Adapter;\r\n","import JQLiteExtras from './modules/jqLiteExtras';\nimport ElementRoutines from './modules/elementRoutines.js';\nimport ScrollBuffer from './modules/buffer.js';\nimport Viewport from './modules/viewport.js';\nimport Adapter from './modules/adapter.js';\n\nangular.module('ui.scroll', [])\n\n .constant('JQLiteExtras', JQLiteExtras)\n .run(['JQLiteExtras', (JQLiteExtras) => {\n const elt = angular.element;\n !(window.jQuery && elt.fn && elt.fn.jquery) ? (new JQLiteExtras()).registerFor(elt) : null;\n ElementRoutines.addCSSRules();\n }])\n\n .directive('uiScrollViewport', function () {\n return {\n restrict: 'A',\n controller: [\n '$scope',\n '$element',\n function (scope, element) {\n this.container = element;\n this.viewport = element;\n this.scope = scope;\n\n angular.forEach(element.children(), child => {\n if (child.tagName.toLowerCase() === 'tbody') {\n this.viewport = angular.element(child);\n }\n });\n\n return this;\n }\n ]\n };\n })\n\n .directive('uiScroll', [\n '$log',\n '$injector',\n '$rootScope',\n '$timeout',\n '$interval',\n '$q',\n '$parse',\n function (console, $injector, $rootScope, $timeout, $interval, $q, $parse) {\n\n return {\n require: ['?^uiScrollViewport'],\n restrict: 'A',\n transclude: 'element',\n priority: 1000,\n terminal: true,\n link: link\n };\n\n function link($scope, element, $attr, controllers, linker) {\n const match = $attr.uiScroll.match(/^\\s*(\\w+)\\s+in\\s+([(\\w|\\$)\\.]+)\\s*$/);\n if (!match) {\n throw new Error('Expected uiScroll in form of \\'_item_ in _datasource_\\' but got \\'' + $attr.uiScroll + '\\'');\n }\n\n function parseNumber(value, defaultValue, isFloat) {\n if (!isFloat) {\n value = value === null ? defaultValue : Math.floor(value);\n }\n return isNaN(value) ? defaultValue : value;\n }\n\n function parseNumericAttr(value, defaultValue, isFloat) {\n const result = $parse(value)($scope);\n return parseNumber(result, defaultValue, isFloat);\n }\n\n const BUFFER_MIN = 3;\n const BUFFER_DEFAULT = 10;\n const PADDING_MIN = 0.3;\n const PADDING_DEFAULT = 0.5;\n const START_INDEX_DEFAULT = 1;\n const MAX_VIEWPORT_DELAY = 500;\n const VIEWPORT_POLLING_INTERVAL = 50;\n\n let datasource = null;\n const itemName = match[1];\n const datasourceName = match[2];\n const viewportController = controllers[0];\n const bufferSize = Math.max(BUFFER_MIN, parseNumericAttr($attr.bufferSize, BUFFER_DEFAULT));\n const padding = Math.max(PADDING_MIN, parseNumericAttr($attr.padding, PADDING_DEFAULT, true));\n let startIndex = parseNumericAttr($attr.startIndex, START_INDEX_DEFAULT);\n let ridActual = 0; // current data revision id\n let pending = [];\n\n const elementRoutines = new ElementRoutines($injector, $q);\n const buffer = new ScrollBuffer(elementRoutines, bufferSize, startIndex);\n const viewport = new Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding);\n const adapter = new Adapter($scope, $parse, $attr, viewport, buffer, doAdjust, reload);\n\n if (viewportController) {\n viewportController.adapter = adapter;\n }\n\n const isDatasourceValid = () =>\n Object.prototype.toString.call(datasource) === '[object Object]' && typeof datasource.get === 'function';\n\n datasource = $parse(datasourceName)($scope); // try to get datasource on scope\n if (!isDatasourceValid()) {\n datasource = $injector.get(datasourceName); // try to inject datasource as service\n if (!isDatasourceValid()) {\n throw new Error(datasourceName + ' is not a valid datasource');\n }\n }\n\n let onRenderHandlers = [];\n function onRenderHandlersRunner() {\n onRenderHandlers.forEach(handler => handler.run());\n onRenderHandlers = [];\n }\n function persistDatasourceIndex(datasource, propName) {\n let getter;\n // need to postpone min/maxIndexUser processing if the view is empty\n if(angular.isNumber(datasource[propName])) {\n getter = datasource[propName];\n if(angular.isNumber(getter)) {\n onRenderHandlers = onRenderHandlers.filter(handler => handler.id !== propName);\n onRenderHandlers.push({\n id: propName,\n run: () => datasource[propName] = getter\n });\n }\n }\n }\n\n function defineDatasourceIndex(datasource, propName, propUserName) {\n const descriptor = Object.getOwnPropertyDescriptor(datasource, propName);\n if (descriptor && (descriptor.set || descriptor.get)) {\n return;\n }\n let getter;\n persistDatasourceIndex(datasource, propName);\n Object.defineProperty(datasource, propName, {\n set: (value) => {\n getter = value;\n if(pending.length && !buffer.length) {\n persistDatasourceIndex(datasource, propName);\n return;\n }\n buffer[propUserName] = value;\n const topPaddingHeightOld = viewport.topDataPos();\n viewport.adjustPaddings();\n if (propName === 'minIndex') {\n viewport.onAfterMinIndexSet(topPaddingHeightOld);\n }\n },\n get: () => getter\n });\n }\n\n defineDatasourceIndex(datasource, 'minIndex', 'minIndexUser');\n defineDatasourceIndex(datasource, 'maxIndex', 'maxIndexUser');\n\n const fetchNext = (datasource.get.length !== 2) ?\n (success) => datasource.get(buffer.next, bufferSize, success) :\n (success) => {\n datasource.get({\n index: buffer.next,\n append: buffer.length ? buffer[buffer.length - 1].item : void 0,\n count: bufferSize\n }, success);\n };\n\n const fetchPrevious = (datasource.get.length !== 2) ?\n (success) => datasource.get(buffer.first - bufferSize, bufferSize, success) :\n (success) => {\n datasource.get({\n index: buffer.first - bufferSize,\n prepend: buffer.length ? buffer[0].item : void 0,\n count: bufferSize\n }, success);\n };\n\n const initialize = () => {\n let tryCount = 0;\n if(!viewport.applyContainerStyle()) {\n const timer = $interval(() => {\n tryCount++;\n if(viewport.applyContainerStyle()) {\n $interval.cancel(timer);\n doAdjust();\n }\n if(tryCount * VIEWPORT_POLLING_INTERVAL >= MAX_VIEWPORT_DELAY) {\n $interval.cancel(timer);\n throw Error(`ui-scroll directive requires a viewport with non-zero height in ${MAX_VIEWPORT_DELAY}ms`);\n }\n }, VIEWPORT_POLLING_INTERVAL);\n }\n else {\n doAdjust();\n }\n };\n\n /**\n * Build padding elements\n *\n * Calling linker is the only way I found to get access to the tag name of the template\n * to prevent the directive scope from pollution a new scope is created and destroyed\n * right after the builder creation is completed\n */\n linker((clone, scope) => {\n viewport.createPaddingElements(clone[0]);\n // we do not include the clone in the DOM. It means that the nested directives will not\n // be able to reach the parent directives, but in this case it is intentional because we\n // created the clone to access the template tag name\n scope.$destroy();\n clone.remove();\n });\n\n $scope.$on('$destroy', () => {\n unbindEvents();\n viewport.unbind('mousewheel', wheelHandler);\n });\n\n viewport.bind('mousewheel', wheelHandler);\n\n initialize();\n\n /* Private function definitions */\n\n function isInvalid(rid) {\n return (rid && rid !== ridActual) || $scope.$$destroyed;\n }\n\n function bindEvents() {\n viewport.bind('resize', resizeAndScrollHandler);\n viewport.bind('scroll', resizeAndScrollHandler);\n }\n\n function unbindEvents() {\n viewport.unbind('resize', resizeAndScrollHandler);\n viewport.unbind('scroll', resizeAndScrollHandler);\n }\n\n function reload() {\n unbindEvents();\n viewport.resetTopPadding();\n viewport.resetBottomPadding();\n if (arguments.length) {\n startIndex = parseNumber(arguments[0], START_INDEX_DEFAULT, false);\n }\n buffer.reset(startIndex);\n persistDatasourceIndex(datasource, 'minIndex');\n persistDatasourceIndex(datasource, 'maxIndex');\n doAdjust();\n }\n\n function isElementVisible(wrapper) {\n return wrapper.element.height() && wrapper.element[0].offsetParent;\n }\n\n function visibilityWatcher(wrapper) {\n if (isElementVisible(wrapper)) {\n buffer.forEach((item) => {\n if (typeof item.unregisterVisibilityWatcher === 'function') {\n item.unregisterVisibilityWatcher();\n delete item.unregisterVisibilityWatcher;\n }\n });\n if (!pending.length) {\n $timeout(() => doAdjust());\n }\n }\n }\n\n function insertWrapperContent(wrapper, insertAfter) {\n createElement(wrapper, insertAfter, viewport.insertElement);\n if (!isElementVisible(wrapper)) {\n wrapper.unregisterVisibilityWatcher = wrapper.scope.$watch(() => visibilityWatcher(wrapper));\n }\n elementRoutines.hideElement(wrapper); // hide inserted elements before data binding\n }\n\n function createElement(wrapper, insertAfter, insertElement) {\n let promises = null;\n const sibling = (insertAfter > 0) ? buffer[insertAfter - 1].element : undefined;\n linker((clone, scope) => {\n promises = insertElement(clone, sibling);\n wrapper.element = clone;\n wrapper.scope = scope;\n scope[itemName] = wrapper.item;\n });\n // ui-scroll-grid apply\n if (adapter.transform) {\n const tdInitializer = wrapper.scope.uiScrollTdInitializer;\n if (tdInitializer && tdInitializer.linking) {\n adapter.transform(wrapper.scope, wrapper.element);\n } else {\n wrapper.scope.uiScrollTdInitializer = {\n onLink: () => adapter.transform(wrapper.scope, wrapper.element),\n scope: wrapper.scope\n };\n }\n }\n return promises;\n }\n\n function updateDOM() {\n let promises = [];\n const toBePrepended = [];\n const toBeRemoved = [];\n const inserted = [];\n\n buffer.forEach((wrapper, i) => {\n switch (wrapper.op) {\n case 'prepend':\n toBePrepended.unshift(wrapper);\n break;\n case 'append':\n insertWrapperContent(wrapper, i);\n wrapper.op = 'none';\n inserted.push(wrapper);\n break;\n case 'insert':\n promises = promises.concat(createElement(wrapper, i, viewport.insertElementAnimated));\n wrapper.op = 'none';\n inserted.push(wrapper);\n break;\n case 'remove':\n toBeRemoved.push(wrapper);\n }\n });\n\n toBeRemoved.forEach((wrapper) => promises = promises.concat(viewport.removeItem(wrapper)));\n\n if (toBePrepended.length)\n toBePrepended.forEach((wrapper) => {\n insertWrapperContent(wrapper);\n wrapper.op = 'none';\n });\n\n buffer.forEach((item, i) => item.scope.$index = buffer.first + i);\n\n return {\n prepended: toBePrepended,\n removed: toBeRemoved,\n inserted: inserted,\n animated: promises\n };\n\n }\n\n function updatePaddings(rid, updates) {\n // schedule another doAdjust after animation completion\n if (updates.animated.length) {\n $q.all(updates.animated).then(() => {\n viewport.adjustPaddings();\n doAdjust(rid);\n });\n } else {\n viewport.adjustPaddings();\n }\n }\n\n function enqueueFetch(rid, updates) {\n if (viewport.shouldLoadBottom()) {\n if (!updates || buffer.effectiveHeight(updates.inserted) > 0) {\n // this means that at least one item appended in the last batch has height > 0\n if (pending.push(true) === 1) {\n adapter.loading(true);\n fetch(rid);\n }\n }\n } else if (viewport.shouldLoadTop()) {\n if ((!updates || buffer.effectiveHeight(updates.prepended) > 0) || pending[0]) {\n // this means that at least one item appended in the last batch has height > 0\n // pending[0] = true means that previous fetch was appending. We need to force at least one prepend\n // BTW there will always be at least 1 element in the pending array because bottom is fetched first\n if (pending.push(false) === 1) {\n adapter.loading(true);\n fetch(rid);\n }\n }\n }\n }\n\n function processUpdates() {\n const updates = updateDOM();\n\n // We need the item bindings to be processed before we can do adjustments\n !$scope.$$phase && !$rootScope.$$phase && $scope.$digest();\n\n updates.inserted.forEach(w => elementRoutines.showElement(w));\n updates.prepended.forEach(w => elementRoutines.showElement(w));\n return updates;\n }\n\n function doAdjust(rid) {\n if (!rid) { // dismiss pending requests\n pending = [];\n rid = ++ridActual;\n }\n\n const updates = processUpdates();\n\n if (isInvalid(rid)) {\n return;\n }\n\n updatePaddings(rid, updates);\n enqueueFetch(rid);\n\n if (!pending.length) {\n adapter.calculateProperties();\n }\n }\n\n function doAdjustAfterFetch(rid) {\n const updates = processUpdates();\n\n viewport.onAfterPrepend(updates);\n\n if (isInvalid(rid)) {\n return;\n }\n\n updatePaddings(rid, updates);\n onRenderHandlersRunner();\n enqueueFetch(rid, updates);\n pending.shift();\n\n if (pending.length)\n fetch(rid);\n else {\n adapter.loading(false);\n bindEvents();\n adapter.calculateProperties();\n }\n }\n\n function fetch(rid) {\n if (pending[0]) {// scrolling down\n if (buffer.length && !viewport.shouldLoadBottom()) {\n doAdjustAfterFetch(rid);\n } else {\n fetchNext((result) => {\n if (isInvalid(rid)) {\n return;\n }\n\n if (result.length < bufferSize) {\n buffer.eof = true;\n }\n\n if (result.length > 0) {\n viewport.clipTop();\n buffer.append(result);\n }\n\n doAdjustAfterFetch(rid);\n });\n }\n } else { // scrolling up\n if (buffer.length && !viewport.shouldLoadTop()) {\n doAdjustAfterFetch(rid);\n } else {\n fetchPrevious((result) => {\n if (isInvalid(rid)) {\n return;\n }\n\n if (result.length < bufferSize) {\n buffer.bof = true;\n // log 'bof is reached'\n }\n\n if (result.length > 0) {\n if (buffer.length) {\n viewport.clipBottom();\n }\n buffer.prepend(result);\n }\n\n doAdjustAfterFetch(rid);\n });\n }\n }\n }\n\n function resizeAndScrollHandler() {\n if (!$rootScope.$$phase && !adapter.isLoading && !adapter.disabled) {\n\n enqueueFetch(ridActual);\n\n if (pending.length) {\n unbindEvents();\n } else {\n adapter.calculateProperties();\n !$scope.$$phase && $scope.$digest();\n }\n }\n }\n\n function wheelHandler(event) {\n if (!adapter.disabled) {\n const scrollTop = viewport[0].scrollTop;\n const yMax = viewport[0].scrollHeight - viewport[0].clientHeight;\n\n if ((scrollTop === 0 && !buffer.bof) || (scrollTop === yMax && !buffer.eof)) {\n event.preventDefault();\n }\n }\n }\n }\n\n }\n ]);\n"],"sourceRoot":""} \ No newline at end of file diff --git a/dist/ui-scroll.min.js b/dist/ui-scroll.min.js index 5f5bb746..44924b52 100644 --- a/dist/ui-scroll.min.js +++ b/dist/ui-scroll.min.js @@ -1,2 +1,2 @@ -!function(n){var r={};function i(e){if(r[e])return r[e].exports;var t=r[e]={i:e,l:!1,exports:{}};return n[e].call(t.exports,t,t.exports,i),t.l=!0,t.exports}i.m=n,i.c=r,i.d=function(e,t,n){i.o(e,t)||Object.defineProperty(e,t,{enumerable:!0,get:n})},i.r=function(e){"undefined"!=typeof Symbol&&Symbol.toStringTag&&Object.defineProperty(e,Symbol.toStringTag,{value:"Module"}),Object.defineProperty(e,"__esModule",{value:!0})},i.t=function(t,e){if(1&e&&(t=i(t)),8&e)return t;if(4&e&&"object"==typeof t&&t&&t.__esModule)return t;var n=Object.create(null);if(i.r(n),Object.defineProperty(n,"default",{enumerable:!0,value:t}),2&e&&"string"!=typeof t)for(var r in t)i.d(n,r,function(e){return t[e]}.bind(null,r));return n},i.n=function(e){var t=e&&e.__esModule?function(){return e.default}:function(){return e};return i.d(t,"a",t),t},i.o=function(e,t){return Object.prototype.hasOwnProperty.call(e,t)},i.p="",i(i.s=1)}([,function(e,t,n){"use strict";function g(e,t){return function(e){if(Array.isArray(e))return e}(e)||function(e,t){var n=[],r=!0,i=!1,o=void 0;try{for(var a,s=e[Symbol.iterator]();!(r=(a=s.next()).done)&&(n.push(a.value),!t||n.length!==t);r=!0);}catch(e){i=!0,o=e}finally{try{r||null==s.return||s.return()}finally{if(i)throw o}}return n}(e,t)||function(){throw new TypeError("Invalid attempt to destructure non-iterable instance")}()}function i(e,t){for(var n=0;ni.minIndexUser)return void i.minIndexUser++;i.minIndex===i.minIndexUser&&i.minIndexUser++}i.minIndex++},decrementMaxIndex:function(){null!==i.maxIndexUser&&i.maxIndex<=i.maxIndexUser&&i.maxIndexUser--,i.maxIndex--},getAbsMinIndex:function(){return null!==i.minIndexUser?Math.min(i.minIndexUser,i.minIndex):i.minIndex},getAbsMaxIndex:function(){return null!==i.maxIndexUser?Math.max(i.maxIndexUser,i.maxIndex):i.maxIndex},effectiveHeight:function(e){if(!e.length)return 0;var t=Number.MAX_VALUE,n=Number.NEGATIVE_INFINITY;return e.forEach(function(e){e.element[0].offsetParent&&(t=Math.min(t,e.element.offset().top),n=Math.max(n,e.element.offset().top+e.element.outerHeight(!0)))}),Math.max(0,n-t)}}),i.reset(t),i}function u(e,t){if(!(e instanceof t))throw new TypeError("Cannot call a class as a function")}function l(e,t){for(var n=0;nt.index?1:0})}},{key:"remove",value:function(e,t){for(var n=e%1==0?e:e.scope.$index,r=e%1==0?t:"isTop"===e._op,i=this.length-1;0<=i;i--)if(this[i].index===n){this.splice(i,1);break}if(!r)for(var o=this.length-1;0<=o;o--)this[o].index>n&&this[o].index--}},{key:"clear",value:function(){this.length=0}}]),e}();function d(){var e=[];return e.push.apply(e,arguments),Object.setPrototypeOf(e,d.prototype),e}d.prototype=Object.create(Array.prototype),Object.getOwnPropertyNames(f.prototype).forEach(function(e){return d.prototype[e]=f.prototype[e]});var h=function(){function t(e){u(this,t),this.element=function(e){if(e.nodeType!==Node.ELEMENT_NODE)throw new Error("ui-scroll directive requires an Element node for templating the view");var t;switch(e.tagName.toLowerCase()){case"dl":throw new Error("ui-scroll directive does not support <".concat(e.tagName,"> as a repeating tag: ").concat(e.outerHTML));case"tr":t=angular.element("
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t=f.height()-e;for(o.scrollTop(o.scrollTop()+t);0<(t-=o.scrollTop());)d.height(d.height()+t),o.scrollTop(o.scrollTop()+t)}},onAfterPrepend:function(e){if(e.prepended.length){var t=c.effectiveHeight(e.prepended),n=f.height()-t;0<=n?f.height(n):(f.height(0),o.scrollTop(o.scrollTop()-n))}},resetTopPadding:function(){f.height(0),f.cache.clear()},resetBottomPadding:function(){d.height(0),d.cache.clear()},removeCacheItem:function(e,t){f.cache.remove(e,t),d.cache.remove(e,t)},removeItem:function(e){return this.removeCacheItem(e),c.remove(e)}}),o}function p(e,t){for(var n=0;n=this.buffer.getAbsMinIndex()&&e<=this.buffer.getAbsMaxIndex()&&angular.isArray(t)&&!t.length&&(this.viewport.removeCacheItem(e,e===this.buffer.minIndex),e===this.buffer.getAbsMinIndex()?this.buffer.incrementMinIndex():this.buffer.decrementMaxIndex())}},{key:"applyUpdate",value:function(t,e){var n=this;if(angular.isArray(e)){var r=this.buffer.indexOf(t);e.reverse().some(function(e){return e===t.item})||(t.op="remove",0!==r||e.length||(t._op="isTop")),e.forEach(function(e){e===t.item?r--:n.buffer.insert(r+1,e,-1===r)})}}},{key:"calculateProperties",value:function(){for(var e=null,t=0,n=!1,r=!1,i=this.buffer.length,o=0;othis.viewport.topVisiblePos()&&(n=!0,this.topVisible=a.item,this.topVisibleElement=a.element,this.topVisibleScope=a.scope),!r&&(l>=this.viewport.bottomVisiblePos()||o===i-1&&this.isEOF())&&(r=!0,this.bottomVisible=a.item,this.bottomVisibleElement=a.element,this.bottomVisibleScope=a.scope),t+=u}if(e=s,n&&r)break}}}])&&p(e.prototype,t),n&&p(e,n),u}();angular.module("ui.scroll",[]).constant("JQLiteExtras",r).run(["JQLiteExtras",function(e){var t=angular.element;!(window.jQuery&&t.fn&&t.fn.jquery)&&(new e).registerFor(t),z.addCSSRules()}]).directive("uiScrollViewport",function(){return{restrict:"A",controller:["$scope","$element",function(e,t){var n=this;return this.container=t,this.viewport=t,this.scope=e,angular.forEach(t.children(),function(e){"tbody"===e.tagName.toLowerCase()&&(n.viewport=angular.element(e))}),this}]}}).directive("uiScroll",["$log","$injector","$rootScope","$timeout","$interval","$q","$parse",function(e,B,D,F,R,W,q){return{require:["?^uiScrollViewport"],restrict:"A",transclude:"element",priority:1e3,terminal:!0,link:function(i,e,t,n,a){var r=t.uiScroll.match(/^\s*(\w+)\s+in\s+([(\w|\$)\.]+)\s*$/);if(!r)throw new Error("Expected uiScroll in form of '_item_ in _datasource_' but got '"+t.uiScroll+"'");function o(e,t,n){return n||(e=null===e?t:Math.floor(e)),isNaN(e)?t:e}function s(e,t,n){var r=q(e)(i);return o(r,t,n)}var u=null,l=r[1],c=r[2],f=n[0],d=Math.max(3,s(t.bufferSize,10)),h=Math.max(.3,s(t.padding,.5,!0)),p=s(t.startIndex,1),m=0,g=[],v=new z(B,W),b=new Q(v,d,p),x=new X(v,b,e,f,D,h),y=new Y(i,q,t,x,b,C,function(){k(),x.resetTopPadding(),x.resetBottomPadding(),arguments.length&&(p=o(arguments[0],1,!1));b.reset(p),E(u,"minIndex"),E(u,"maxIndex"),C()});f&&(f.adapter=y);var w=function(){return"[object Object]"===Object.prototype.toString.call(u)&&"function"==typeof u.get};if(u=q(c)(i),!w()&&(u=B.get(c),!w()))throw new Error(c+" is not a valid datasource");var I=[];function E(e,t){var n;angular.isNumber(e[t])&&(n=e[t],angular.isNumber(n)&&(I=I.filter(function(e){return e.id!==t})).push({id:t,run:function(){return e[t]=n}}))}function $(n,r,i){var o,e=Object.getOwnPropertyDescriptor(n,r);e&&(e.set||e.get)||(E(n,r),Object.defineProperty(n,r,{set:function(e){if(o=e,!g.length||b.length){b[i]=e;var t=x.topDataPos();x.adjustPaddings(),"minIndex"===r&&x.onAfterMinIndexSet(t)}else E(n,r)},get:function(){return o}}))}$(u,"minIndex","minIndexUser"),$(u,"maxIndex","maxIndexUser");var P=2!==u.get.length?function(e){return u.get(b.next,d,e)}:function(e){u.get({index:b.next,append:b.length?b[b.length-1].item:void 0,count:d},e)},T=2!==u.get.length?function(e){return u.get(b.first-d,d,e)}:function(e){u.get({index:b.first-d,prepend:b.length?b[0].item:void 0,count:d},e)};function S(e){return e&&e!==m||i.$$destroyed}function k(){x.unbind("resize",_),x.unbind("scroll",_)}function A(e){return e.element.height()&&e.element[0].offsetParent}function O(e,t){j(e,t,x.insertElement),A(e)||(e.unregisterVisibilityWatcher=e.scope.$watch(function(){A(e)&&(b.forEach(function(e){"function"==typeof e.unregisterVisibilityWatcher&&(e.unregisterVisibilityWatcher(),delete e.unregisterVisibilityWatcher)}),g.length||F(function(){return C()}))})),v.hideElement(e)}function j(n,e,r){var i=null,o=0 obj && obj.document && obj.location && obj.alert && obj.setInterval;\r\n\r\n function scrollTo(self, direction, value) {\r\n let elem = self[0];\r\n let [method, prop, preserve] = {\r\n top: [\r\n 'scrollTop',\r\n 'pageYOffset',\r\n 'scrollLeft'\r\n ],\r\n left: [\r\n 'scrollLeft',\r\n 'pageXOffset',\r\n 'scrollTop'\r\n ]\r\n }[direction];\r\n\r\n const isValueDefined = typeof value !== 'undefined';\r\n if (isWindow(elem)) {\r\n if (isValueDefined) {\r\n return elem.scrollTo(self[preserve].call(self), value);\r\n }\r\n return (prop in elem) ? elem[prop] : elem.document.documentElement[method];\r\n } else {\r\n if (isValueDefined) {\r\n elem[method] = value;\r\n }\r\n return elem[method];\r\n }\r\n }\r\n\r\n if (window.getComputedStyle) {\r\n getStyle = (elem) => window.getComputedStyle(elem, null);\r\n convertToPx = (elem, value) => parseFloat(value);\r\n } else {\r\n getStyle = (elem) => elem.currentStyle;\r\n convertToPx = (elem, value) => {\r\n let left, result, rs, rsLeft, style;\r\n let core_pnum = /[+-]?(?:\\d*\\.|)\\d+(?:[eE][+-]?\\d+|)/.source;\r\n let rnumnonpx = new RegExp('^(' + core_pnum + ')(?!px)[a-z%]+$', 'i');\r\n\r\n if (!rnumnonpx.test(value)) {\r\n return parseFloat(value);\r\n }\r\n\r\n // ported from JQuery\r\n style = elem.style;\r\n left = style.left;\r\n rs = elem.runtimeStyle;\r\n rsLeft = rs && rs.left;\r\n if (rs) {\r\n rs.left = style.left;\r\n }\r\n // put in the new values to get a computed style out\r\n style.left = value;\r\n result = style.pixelLeft;\r\n style.left = left;\r\n if (rsLeft) {\r\n rs.left = rsLeft;\r\n }\r\n return result;\r\n };\r\n }\r\n\r\n function getMeasurements(elem, measure) {\r\n let base, borderA, borderB, computedMarginA, computedMarginB, computedStyle, dirA, dirB, marginA, marginB, paddingA, paddingB;\r\n\r\n if (isWindow(elem)) {\r\n base = document.documentElement[{height: 'clientHeight', width: 'clientWidth'}[measure]];\r\n\r\n return {\r\n base: base,\r\n padding: 0,\r\n border: 0,\r\n margin: 0\r\n };\r\n }\r\n\r\n // Start with offset property\r\n [\r\n base,\r\n dirA,\r\n dirB\r\n ] = {\r\n width: [\r\n elem.offsetWidth,\r\n 'Left',\r\n 'Right'\r\n ],\r\n height: [\r\n elem.offsetHeight,\r\n 'Top',\r\n 'Bottom'\r\n ]\r\n }[measure];\r\n\r\n computedStyle = getStyle(elem);\r\n paddingA = convertToPx(elem, computedStyle['padding' + dirA]) || 0;\r\n paddingB = convertToPx(elem, computedStyle['padding' + dirB]) || 0;\r\n borderA = convertToPx(elem, computedStyle['border' + dirA + 'Width']) || 0;\r\n borderB = convertToPx(elem, computedStyle['border' + dirB + 'Width']) || 0;\r\n computedMarginA = computedStyle['margin' + dirA];\r\n computedMarginB = computedStyle['margin' + dirB];\r\n\r\n // I do not care for width for now, so this hack is irrelevant\r\n // if ( !supportsPercentMargin )\r\n // computedMarginA = hackPercentMargin( elem, computedStyle, computedMarginA )\r\n // computedMarginB = hackPercentMargin( elem, computedStyle, computedMarginB )\r\n marginA = convertToPx(elem, computedMarginA) || 0;\r\n marginB = convertToPx(elem, computedMarginB) || 0;\r\n\r\n return {\r\n base: base,\r\n padding: paddingA + paddingB,\r\n border: borderA + borderB,\r\n margin: marginA + marginB\r\n };\r\n }\r\n\r\n function getWidthHeight(elem, direction, measure) {\r\n let computedStyle, result;\r\n\r\n let measurements = getMeasurements(elem, direction);\r\n\r\n if (measurements.base > 0) {\r\n return {\r\n base: measurements.base - measurements.padding - measurements.border,\r\n outer: measurements.base,\r\n outerfull: measurements.base + measurements.margin\r\n }[measure];\r\n }\r\n\r\n // Fall back to computed then uncomputed css if necessary\r\n computedStyle = getStyle(elem);\r\n result = computedStyle[direction];\r\n\r\n if (result < 0 || result === null) {\r\n result = elem.style[direction] || 0;\r\n }\r\n\r\n // Normalize \"\", auto, and prepare for extra\r\n result = parseFloat(result) || 0;\r\n\r\n return {\r\n base: result - measurements.padding - measurements.border,\r\n outer: result,\r\n outerfull: result + measurements.padding + measurements.border + measurements.margin\r\n }[measure];\r\n }\r\n\r\n // define missing methods\r\n return angular.forEach({\r\n before(newElem) {\r\n var children, elem, i, j, parent, ref, self;\r\n self = this;\r\n elem = self[0];\r\n parent = self.parent();\r\n children = parent.contents();\r\n if (children[0] === elem) {\r\n return parent.prepend(newElem);\r\n } else {\r\n for (i = j = 1, ref = children.length - 1; 1 <= ref ? j <= ref : j >= ref; i = 1 <= ref ? ++j : --j) {\r\n if (children[i] === elem) {\r\n angular.element(children[i - 1]).after(newElem);\r\n return;\r\n }\r\n }\r\n throw new Error('invalid DOM structure ' + elem.outerHTML);\r\n }\r\n },\r\n height (value){\r\n var self;\r\n self = this;\r\n if (typeof value !== 'undefined') {\r\n if (angular.isNumber(value)) {\r\n value = value + 'px';\r\n }\r\n return css.call(self, 'height', value);\r\n } else {\r\n return getWidthHeight(this[0], 'height', 'base');\r\n }\r\n },\r\n outerHeight(option) {\r\n return getWidthHeight(this[0], 'height', option ? 'outerfull' : 'outer');\r\n },\r\n outerWidth(option) {\r\n return getWidthHeight(this[0], 'width', option ? 'outerfull' : 'outer');\r\n },\r\n\r\n /*\r\n The offset setter method is not implemented\r\n */\r\n offset(value) {\r\n let docElem, win;\r\n let self = this;\r\n let box = {\r\n top: 0,\r\n left: 0\r\n };\r\n let elem = self[0];\r\n let doc = elem && elem.ownerDocument;\r\n\r\n if (arguments.length) {\r\n if (value === undefined) {\r\n return self;\r\n }\r\n // TODO: implement setter\r\n throw new Error('offset setter method is not implemented');\r\n }\r\n\r\n if (!doc) {\r\n return;\r\n }\r\n\r\n docElem = doc.documentElement;\r\n\r\n // TODO: Make sure it's not a disconnected DOM node\r\n\r\n if (elem.getBoundingClientRect != null) {\r\n box = elem.getBoundingClientRect();\r\n }\r\n\r\n win = doc.defaultView || doc.parentWindow;\r\n\r\n return {\r\n top: box.top + (win.pageYOffset || docElem.scrollTop) - (docElem.clientTop || 0),\r\n left: box.left + (win.pageXOffset || docElem.scrollLeft) - (docElem.clientLeft || 0)\r\n };\r\n },\r\n scrollTop(value) {\r\n return scrollTo(this, 'top', value);\r\n },\r\n scrollLeft(value) {\r\n return scrollTo(this, 'left', value);\r\n }\r\n }, (value, key) => {\r\n if (!element.prototype[key]) {\r\n return element.prototype[key] = value;\r\n }\r\n });\r\n }\r\n\r\n}\r\n","const hideClassToken = 'ng-ui-scroll-hide';\r\n\r\nexport default class ElementRoutines {\r\n\r\n static addCSSRules() {\r\n const selector = '.' + hideClassToken;\r\n const rules = 'display: none';\r\n const sheet = document.styleSheets[0];\r\n let index;\r\n try {\r\n index = sheet.cssRules.length;\r\n } catch (err) {\r\n index = 0;\r\n }\r\n if('insertRule' in sheet) {\r\n sheet.insertRule(selector + '{' + rules + '}', index);\r\n }\r\n else if('addRule' in sheet) {\r\n sheet.addRule(selector, rules, index);\r\n }\r\n }\r\n\r\n constructor($injector, $q) {\r\n this.$animate = ($injector.has && $injector.has('$animate')) ? $injector.get('$animate') : null;\r\n this.isAngularVersionLessThen1_3 = angular.version.major === 1 && angular.version.minor < 3;\r\n this.$q = $q;\r\n }\r\n\r\n hideElement(wrapper) {\r\n wrapper.element.addClass(hideClassToken);\r\n }\r\n\r\n showElement(wrapper) {\r\n wrapper.element.removeClass(hideClassToken);\r\n }\r\n\r\n insertElement(newElement, previousElement) {\r\n previousElement.after(newElement);\r\n return [];\r\n }\r\n\r\n removeElement(wrapper) {\r\n wrapper.element.remove();\r\n wrapper.scope.$destroy();\r\n return [];\r\n }\r\n\r\n insertElementAnimated(newElement, previousElement) {\r\n if (!this.$animate) {\r\n return this.insertElement(newElement, previousElement);\r\n }\r\n\r\n if (this.isAngularVersionLessThen1_3) {\r\n const deferred = this.$q.defer();\r\n // no need for parent - previous element is never null\r\n this.$animate.enter(newElement, null, previousElement, () => deferred.resolve());\r\n\r\n return [deferred.promise];\r\n }\r\n\r\n // no need for parent - previous element is never null\r\n return [this.$animate.enter(newElement, null, previousElement)];\r\n }\r\n\r\n removeElementAnimated(wrapper) {\r\n if (!this.$animate) {\r\n return this.removeElement(wrapper);\r\n }\r\n\r\n if (this.isAngularVersionLessThen1_3) {\r\n const deferred = this.$q.defer();\r\n this.$animate.leave(wrapper.element, () => {\r\n wrapper.scope.$destroy();\r\n return deferred.resolve();\r\n });\r\n\r\n return [deferred.promise];\r\n }\r\n\r\n return [(this.$animate.leave(wrapper.element)).then(() => wrapper.scope.$destroy())];\r\n }\r\n}","export default function ScrollBuffer(elementRoutines, bufferSize, startIndex) {\r\n const buffer = Object.create(Array.prototype);\r\n\r\n angular.extend(buffer, {\r\n size: bufferSize,\r\n\r\n reset(startIndex) {\r\n buffer.remove(0, buffer.length);\r\n buffer.eof = false;\r\n buffer.bof = false;\r\n buffer.first = startIndex;\r\n buffer.next = startIndex;\r\n buffer.minIndex = startIndex;\r\n buffer.maxIndex = startIndex;\r\n buffer.minIndexUser = null;\r\n buffer.maxIndexUser = null;\r\n },\r\n\r\n append(items) {\r\n items.forEach((item) => {\r\n ++buffer.next;\r\n buffer.insert('append', item);\r\n });\r\n buffer.maxIndex = buffer.eof ? buffer.next - 1 : Math.max(buffer.next - 1, buffer.maxIndex);\r\n },\r\n\r\n prepend(items) {\r\n items.reverse().forEach((item) => {\r\n --buffer.first;\r\n buffer.insert('prepend', item);\r\n });\r\n buffer.minIndex = buffer.bof ? buffer.minIndex = buffer.first : Math.min(buffer.first, buffer.minIndex);\r\n },\r\n\r\n /**\r\n * inserts wrapped element in the buffer\r\n * the first argument is either operation keyword (see below) or a number for operation 'insert'\r\n * for insert the number is the index for the buffer element the new one have to be inserted after\r\n * operations: 'append', 'prepend', 'insert', 'remove', 'update', 'none'\r\n */\r\n insert(operation, item, isTop) {\r\n const wrapper = {\r\n item: item\r\n };\r\n\r\n if (operation % 1 === 0) {// it is an insert\r\n wrapper.op = 'insert';\r\n buffer.splice(operation, 0, wrapper);\r\n if(isTop) {\r\n buffer.first--;\r\n }\r\n else {\r\n buffer.next++;\r\n }\r\n } else {\r\n wrapper.op = operation;\r\n switch (operation) {\r\n case 'append':\r\n buffer.push(wrapper);\r\n break;\r\n case 'prepend':\r\n buffer.unshift(wrapper);\r\n break;\r\n }\r\n }\r\n },\r\n\r\n // removes elements from buffer\r\n remove(arg1, arg2) {\r\n if (angular.isNumber(arg1)) {\r\n // removes items from arg1 (including) through arg2 (excluding)\r\n for (let i = arg1; i < arg2; i++) {\r\n elementRoutines.removeElement(buffer[i]);\r\n }\r\n return buffer.splice(arg1, arg2 - arg1);\r\n }\r\n // removes single item(wrapper) from the buffer\r\n buffer.splice(buffer.indexOf(arg1), 1);\r\n if(arg1._op === 'isTop' && buffer.first === this.getAbsMinIndex()) {\r\n this.incrementMinIndex();\r\n }\r\n else {\r\n this.decrementMaxIndex();\r\n }\r\n if(arg1._op === 'isTop') {\r\n buffer.first++;\r\n }\r\n else {\r\n buffer.next--;\r\n }\r\n if(!buffer.length) {\r\n buffer.first = 1;\r\n buffer.next = 1;\r\n }\r\n\r\n return elementRoutines.removeElementAnimated(arg1);\r\n },\r\n\r\n incrementMinIndex() {\r\n if(buffer.minIndexUser !== null) {\r\n if(buffer.minIndex > buffer.minIndexUser) {\r\n buffer.minIndexUser++;\r\n return;\r\n }\r\n if(buffer.minIndex === buffer.minIndexUser) {\r\n buffer.minIndexUser++;\r\n }\r\n }\r\n buffer.minIndex++;\r\n },\r\n\r\n decrementMaxIndex() {\r\n if(buffer.maxIndexUser !== null && buffer.maxIndex <= buffer.maxIndexUser) {\r\n buffer.maxIndexUser--;\r\n }\r\n buffer.maxIndex--;\r\n },\r\n\r\n getAbsMinIndex() {\r\n if(buffer.minIndexUser !== null) {\r\n return Math.min(buffer.minIndexUser, buffer.minIndex);\r\n }\r\n return buffer.minIndex;\r\n },\r\n\r\n getAbsMaxIndex() {\r\n if(buffer.maxIndexUser !== null) {\r\n return Math.max(buffer.maxIndexUser, buffer.maxIndex);\r\n }\r\n return buffer.maxIndex;\r\n },\r\n\r\n effectiveHeight(elements) {\r\n if (!elements.length) {\r\n return 0;\r\n }\r\n let top = Number.MAX_VALUE;\r\n let bottom = Number.NEGATIVE_INFINITY;\r\n elements.forEach((wrapper) => {\r\n if (wrapper.element[0].offsetParent) {\r\n // element style is not display:none\r\n top = Math.min(top, wrapper.element.offset().top);\r\n bottom = Math.max(bottom, wrapper.element.offset().top + wrapper.element.outerHeight(true));\r\n }\r\n });\r\n return Math.max(0, bottom - top);\r\n }\r\n\r\n });\r\n\r\n buffer.reset(startIndex);\r\n\r\n return buffer;\r\n}\r\n","// Can't just extend the Array, due to Babel does not support built-in classes extending\r\n// This solution was taken from https://stackoverflow.com/questions/46897414/es6-class-extends-array-workaround-for-es5-babel-transpile\r\nclass CacheProto {\r\n add(item) {\r\n for (let i = this.length - 1; i >= 0; i--) {\r\n if (this[i].index === item.scope.$index) {\r\n this[i].height = item.element.outerHeight();\r\n return;\r\n }\r\n }\r\n this.push({\r\n index: item.scope.$index,\r\n height: item.element.outerHeight()\r\n });\r\n this.sort((a, b) => ((a.index < b.index) ? -1 : ((a.index > b.index) ? 1 : 0)));\r\n }\r\n\r\n remove(argument, _isTop) {\r\n const index = argument % 1 === 0 ? argument : argument.scope.$index;\r\n const isTop = argument % 1 === 0 ? _isTop : argument._op === 'isTop';\r\n for (let i = this.length - 1; i >= 0; i--) {\r\n if (this[i].index === index) {\r\n this.splice(i, 1);\r\n break;\r\n }\r\n }\r\n if(!isTop) {\r\n for (let i = this.length - 1; i >= 0; i--) {\r\n if (this[i].index > index) {\r\n this[i].index--;\r\n }\r\n }\r\n }\r\n }\r\n\r\n clear() {\r\n this.length = 0;\r\n }\r\n}\r\n\r\nfunction Cache() {\r\n const instance = [];\r\n instance.push.apply(instance, arguments);\r\n Object.setPrototypeOf(instance, Cache.prototype);\r\n return instance;\r\n}\r\nCache.prototype = Object.create(Array.prototype);\r\nObject.getOwnPropertyNames(CacheProto.prototype).forEach(methodName =>\r\n Cache.prototype[methodName] = CacheProto.prototype[methodName]\r\n);\r\n\r\nfunction generateElement(template) {\r\n if(template.nodeType !== Node.ELEMENT_NODE) {\r\n throw new Error('ui-scroll directive requires an Element node for templating the view');\r\n }\r\n let element;\r\n switch (template.tagName.toLowerCase()) {\r\n case 'dl':\r\n throw new Error(`ui-scroll directive does not support <${template.tagName}> as a repeating tag: ${template.outerHTML}`);\r\n case 'tr':\r\n let table = angular.element('
    ');\r\n element = table.find('tr');\r\n break;\r\n case 'li':\r\n element = angular.element('
  • ');\r\n break;\r\n default:\r\n element = angular.element('
    ');\r\n }\r\n return element;\r\n}\r\n\r\nclass Padding {\r\n constructor(template) {\r\n this.element = generateElement(template);\r\n this.cache = new Cache();\r\n }\r\n\r\n height() {\r\n return this.element.height.apply(this.element, arguments);\r\n }\r\n}\r\n\r\nexport default Padding;","import Padding from './padding';\r\n\r\nexport default function Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding) {\r\n let topPadding = null;\r\n let bottomPadding = null;\r\n const viewport = viewportController && viewportController.viewport ? viewportController.viewport : angular.element(window);\r\n const container = viewportController && viewportController.container ? viewportController.container : undefined;\r\n const scope = viewportController && viewportController.scope ? viewportController.scope : $rootScope;\r\n\r\n viewport.css({\r\n 'overflow-anchor': 'none',\r\n 'overflow-y': 'auto',\r\n 'display': 'block'\r\n });\r\n\r\n function bufferPadding() {\r\n return viewport.outerHeight() * padding; // some extra space to initiate preload\r\n }\r\n\r\n angular.extend(viewport, {\r\n getScope() {\r\n return scope;\r\n },\r\n\r\n createPaddingElements(template) {\r\n topPadding = new Padding(template);\r\n bottomPadding = new Padding(template);\r\n element.before(topPadding.element);\r\n element.after(bottomPadding.element);\r\n topPadding.height(0);\r\n bottomPadding.height(0);\r\n },\r\n\r\n applyContainerStyle() {\r\n if (!container) {\r\n return true;\r\n }\r\n if(container !== viewport) {\r\n viewport.css('height', window.getComputedStyle(container[0]).height);\r\n }\r\n return viewport.height() > 0;\r\n },\r\n\r\n bottomDataPos() {\r\n let scrollHeight = viewport[0].scrollHeight;\r\n scrollHeight = scrollHeight != null ? scrollHeight : viewport[0].document.documentElement.scrollHeight;\r\n return scrollHeight - bottomPadding.height();\r\n },\r\n\r\n topDataPos() {\r\n return topPadding.height();\r\n },\r\n\r\n bottomVisiblePos() {\r\n return viewport.scrollTop() + viewport.outerHeight();\r\n },\r\n\r\n topVisiblePos() {\r\n return viewport.scrollTop();\r\n },\r\n\r\n insertElement(e, sibling) {\r\n return elementRoutines.insertElement(e, sibling || topPadding.element);\r\n },\r\n\r\n insertElementAnimated(e, sibling) {\r\n return elementRoutines.insertElementAnimated(e, sibling || topPadding.element);\r\n },\r\n\r\n shouldLoadBottom() {\r\n return !buffer.eof && viewport.bottomDataPos() < viewport.bottomVisiblePos() + bufferPadding();\r\n },\r\n\r\n clipBottom() {\r\n // clip the invisible items off the bottom\r\n let overage = 0;\r\n let overageHeight = 0;\r\n let itemHeight = 0;\r\n let emptySpaceHeight = viewport.bottomDataPos() - viewport.bottomVisiblePos() - bufferPadding();\r\n\r\n for (let i = buffer.length - 1; i >= 0; i--) {\r\n itemHeight = buffer[i].element.outerHeight(true);\r\n if (overageHeight + itemHeight > emptySpaceHeight) {\r\n break;\r\n }\r\n bottomPadding.cache.add(buffer[i]);\r\n overageHeight += itemHeight;\r\n overage++;\r\n }\r\n\r\n if (overage > 0) {\r\n buffer.eof = false;\r\n buffer.remove(buffer.length - overage, buffer.length);\r\n buffer.next -= overage;\r\n viewport.adjustPaddings();\r\n }\r\n },\r\n\r\n shouldLoadTop() {\r\n return !buffer.bof && (viewport.topDataPos() > viewport.topVisiblePos() - bufferPadding());\r\n },\r\n\r\n clipTop() {\r\n // clip the invisible items off the top\r\n let overage = 0;\r\n let overageHeight = 0;\r\n let itemHeight = 0;\r\n let emptySpaceHeight = viewport.topVisiblePos() - viewport.topDataPos() - bufferPadding();\r\n\r\n for (let i = 0; i < buffer.length; i++) {\r\n itemHeight = buffer[i].element.outerHeight(true);\r\n if (overageHeight + itemHeight > emptySpaceHeight) {\r\n break;\r\n }\r\n topPadding.cache.add(buffer[i]);\r\n overageHeight += itemHeight;\r\n overage++;\r\n }\r\n\r\n if (overage > 0) {\r\n // we need to adjust top padding element before items are removed from top\r\n // to avoid strange behaviour of scroll bar during remove top items when we are at the very bottom\r\n topPadding.height(topPadding.height() + overageHeight);\r\n buffer.bof = false;\r\n buffer.remove(0, overage);\r\n buffer.first += overage;\r\n }\r\n },\r\n\r\n adjustPaddings() {\r\n if (!buffer.length) {\r\n return;\r\n }\r\n\r\n // precise heights calculation based on items that are in buffer or that were in buffer once\r\n const visibleItemsHeight = buffer.reduce((summ, item) => summ + item.element.outerHeight(true), 0);\r\n\r\n let topPaddingHeight = 0, topCount = 0;\r\n topPadding.cache.forEach(item => {\r\n if(item.index < buffer.first) {\r\n topPaddingHeight += item.height;\r\n topCount++;\r\n }\r\n });\r\n\r\n let bottomPaddingHeight = 0, bottomCount = 0;\r\n bottomPadding.cache.forEach(item => {\r\n if(item.index >= buffer.next) {\r\n bottomPaddingHeight += item.height;\r\n bottomCount++;\r\n }\r\n });\r\n\r\n const totalHeight = visibleItemsHeight + topPaddingHeight + bottomPaddingHeight;\r\n const averageItemHeight = totalHeight / (topCount + bottomCount + buffer.length);\r\n\r\n // average heights calculation, items that have never been reached\r\n let adjustTopPadding = buffer.minIndexUser !== null && buffer.minIndex > buffer.minIndexUser;\r\n let adjustBottomPadding = buffer.maxIndexUser !== null && buffer.maxIndex < buffer.maxIndexUser;\r\n let topPaddingHeightAdd = adjustTopPadding ? (buffer.minIndex - buffer.minIndexUser) * averageItemHeight : 0;\r\n let bottomPaddingHeightAdd = adjustBottomPadding ? (buffer.maxIndexUser - buffer.maxIndex) * averageItemHeight : 0;\r\n\r\n // paddings combine adjustment\r\n topPadding.height(topPaddingHeight + topPaddingHeightAdd);\r\n bottomPadding.height(bottomPaddingHeight + bottomPaddingHeightAdd);\r\n },\r\n\r\n onAfterMinIndexSet(topPaddingHeightOld) {\r\n // additional scrollTop adjustment in case of datasource.minIndex external set\r\n if (buffer.minIndexUser !== null && buffer.minIndex > buffer.minIndexUser) {\r\n let diff = topPadding.height() - topPaddingHeightOld;\r\n viewport.scrollTop(viewport.scrollTop() + diff);\r\n while((diff -= viewport.scrollTop()) > 0) {\r\n bottomPadding.height(bottomPadding.height() + diff);\r\n viewport.scrollTop(viewport.scrollTop() + diff);\r\n }\r\n }\r\n },\r\n\r\n onAfterPrepend(updates) {\r\n if (!updates.prepended.length)\r\n return;\r\n const height = buffer.effectiveHeight(updates.prepended);\r\n const paddingHeight = topPadding.height() - height;\r\n if (paddingHeight >= 0) {\r\n topPadding.height(paddingHeight);\r\n }\r\n else {\r\n topPadding.height(0);\r\n viewport.scrollTop(viewport.scrollTop() - paddingHeight);\r\n }\r\n },\r\n\r\n resetTopPadding() {\r\n topPadding.height(0);\r\n topPadding.cache.clear();\r\n },\r\n\r\n resetBottomPadding() {\r\n bottomPadding.height(0);\r\n bottomPadding.cache.clear();\r\n },\r\n\r\n removeCacheItem(item, isTop) {\r\n topPadding.cache.remove(item, isTop);\r\n bottomPadding.cache.remove(item, isTop);\r\n },\r\n\r\n removeItem(item) {\r\n this.removeCacheItem(item);\r\n return buffer.remove(item);\r\n }\r\n });\r\n\r\n return viewport;\r\n}\r\n","class Adapter {\r\n\r\n constructor($scope, $parse, $attr, viewport, buffer, doAdjust, reload) {\r\n this.$parse = $parse;\r\n this.$attr = $attr;\r\n this.viewport = viewport;\r\n this.buffer = buffer;\r\n\r\n this.doAdjust = doAdjust;\r\n this.reload = reload;\r\n\r\n this.isLoading = false;\r\n this.disabled = false;\r\n\r\n const viewportScope = viewport.getScope();\r\n this.startScope = viewportScope.$parent ? viewportScope : $scope;\r\n\r\n this.publicContext = {};\r\n this.assignAdapter($attr.adapter);\r\n this.generatePublicContext();\r\n }\r\n\r\n assignAdapter(adapterAttr) {\r\n if (!adapterAttr || !(adapterAttr = adapterAttr.replace(/^\\s+|\\s+$/gm, ''))) {\r\n return;\r\n }\r\n let adapterOnScope;\r\n\r\n try {\r\n this.$parse(adapterAttr).assign(this.startScope, {});\r\n adapterOnScope = this.$parse(adapterAttr)(this.startScope);\r\n }\r\n catch (error) {\r\n error.message = `Angular ui-scroll Adapter assignment exception.\\n` +\r\n `Can't parse \"${adapterAttr}\" expression.\\n` +\r\n error.message;\r\n throw error;\r\n }\r\n\r\n angular.extend(adapterOnScope, this.publicContext);\r\n this.publicContext = adapterOnScope;\r\n }\r\n\r\n generatePublicContext() {\r\n // these methods will be accessible out of ui-scroll via user defined adapter\r\n const publicMethods = ['reload', 'applyUpdates', 'append', 'prepend', 'isBOF', 'isEOF', 'isEmpty'];\r\n for (let i = publicMethods.length - 1; i >= 0; i--) {\r\n this.publicContext[publicMethods[i]] = this[publicMethods[i]].bind(this);\r\n }\r\n\r\n // these read-only props will be accessible out of ui-scroll via user defined adapter\r\n const publicProps = ['isLoading', 'topVisible', 'topVisibleElement', 'topVisibleScope', 'bottomVisible', 'bottomVisibleElement', 'bottomVisibleScope'];\r\n for (let i = publicProps.length - 1; i >= 0; i--) {\r\n let property, attr = this.$attr[publicProps[i]];\r\n Object.defineProperty(this, publicProps[i], {\r\n get: () => property,\r\n set: (value) => {\r\n property = value;\r\n this.publicContext[publicProps[i]] = value;\r\n if (attr) {\r\n this.$parse(attr).assign(this.startScope, value);\r\n }\r\n }\r\n });\r\n }\r\n\r\n // non-read-only public property\r\n Object.defineProperty(this.publicContext, 'disabled', {\r\n get: () => this.disabled,\r\n set: (value) => (!(this.disabled = value)) ? this.doAdjust() : null\r\n });\r\n }\r\n\r\n loading(value) {\r\n this.isLoading = value;\r\n }\r\n\r\n isBOF() {\r\n return this.buffer.bof;\r\n }\r\n\r\n isEOF() {\r\n return this.buffer.eof;\r\n }\r\n\r\n isEmpty() {\r\n return !this.buffer.length;\r\n }\r\n\r\n append(newItems) {\r\n this.buffer.append(newItems);\r\n this.doAdjust();\r\n this.viewport.clipTop();\r\n this.viewport.clipBottom();\r\n }\r\n\r\n prepend(newItems) {\r\n this.buffer.prepend(newItems);\r\n this.doAdjust();\r\n this.viewport.clipTop();\r\n this.viewport.clipBottom();\r\n }\r\n\r\n applyUpdates(arg1, arg2) {\r\n if (typeof arg1 === 'function') {\r\n this.applyUpdatesFunc(arg1);\r\n } else {\r\n this.applyUpdatesIndex(arg1, arg2);\r\n }\r\n this.doAdjust();\r\n }\r\n\r\n applyUpdatesFunc(cb) {\r\n this.buffer.slice(0).forEach((wrapper) => {\r\n // we need to do it on the buffer clone, because buffer content\r\n // may change as we iterate through\r\n this.applyUpdate(wrapper, cb(wrapper.item, wrapper.scope, wrapper.element));\r\n });\r\n }\r\n\r\n applyUpdatesIndex(index, newItems) {\r\n if (index % 1 !== 0) {\r\n throw new Error('applyUpdates - ' + index + ' is not a valid index (should be an integer)');\r\n }\r\n const _index = index - this.buffer.first;\r\n\r\n // apply updates only within buffer\r\n if (_index >= 0 && _index < this.buffer.length) {\r\n this.applyUpdate(this.buffer[_index], newItems);\r\n }\r\n // out-of-buffer case: deletion may affect Paddings\r\n else if(index >= this.buffer.getAbsMinIndex() && index <= this.buffer.getAbsMaxIndex()) {\r\n if(angular.isArray(newItems) && !newItems.length) {\r\n this.viewport.removeCacheItem(index, index === this.buffer.minIndex);\r\n if(index === this.buffer.getAbsMinIndex()) {\r\n this.buffer.incrementMinIndex();\r\n }\r\n else {\r\n this.buffer.decrementMaxIndex();\r\n }\r\n }\r\n }\r\n }\r\n\r\n applyUpdate(wrapper, newItems) {\r\n if (!angular.isArray(newItems)) {\r\n return;\r\n }\r\n let position = this.buffer.indexOf(wrapper);\r\n if (!newItems.reverse().some(newItem => newItem === wrapper.item)) {\r\n wrapper.op = 'remove';\r\n if(position === 0 && !newItems.length) {\r\n wrapper._op = 'isTop'; // to catch \"first\" edge case on remove\r\n }\r\n }\r\n newItems.forEach((newItem) => {\r\n if (newItem === wrapper.item) {\r\n position--;\r\n } else {\r\n // 3 parameter (isTop) is to catch \"first\" edge case on insert\r\n this.buffer.insert(position + 1, newItem, position === -1);\r\n }\r\n });\r\n }\r\n\r\n calculateProperties() {\r\n let rowTop = null, topHeight = 0;\r\n let topDone = false, bottomDone = false;\r\n const length = this.buffer.length;\r\n\r\n for (let i = 0; i < length; i++) {\r\n const item = this.buffer[i];\r\n const itemTop = item.element.offset().top;\r\n\r\n if (rowTop !== itemTop) { // a new row condition\r\n const itemHeight = item.element.outerHeight(true);\r\n const top = this.viewport.topDataPos() + topHeight + itemHeight;\r\n\r\n if (!topDone && top > this.viewport.topVisiblePos()) {\r\n topDone = true;\r\n this['topVisible'] = item.item;\r\n this['topVisibleElement'] = item.element;\r\n this['topVisibleScope'] = item.scope;\r\n }\r\n if (!bottomDone && (top >= this.viewport.bottomVisiblePos() || (i === length - 1 && this.isEOF()))) {\r\n bottomDone = true;\r\n this['bottomVisible'] = item.item;\r\n this['bottomVisibleElement'] = item.element;\r\n this['bottomVisibleScope'] = item.scope;\r\n }\r\n topHeight += itemHeight;\r\n }\r\n rowTop = itemTop;\r\n\r\n if (topDone && bottomDone) {\r\n break;\r\n }\r\n }\r\n }\r\n\r\n}\r\n\r\nexport default Adapter;\r\n","import JQLiteExtras from './modules/jqLiteExtras';\nimport ElementRoutines from './modules/elementRoutines.js';\nimport ScrollBuffer from './modules/buffer.js';\nimport Viewport from './modules/viewport.js';\nimport Adapter from './modules/adapter.js';\n\nangular.module('ui.scroll', [])\n\n .constant('JQLiteExtras', JQLiteExtras)\n .run(['JQLiteExtras', (JQLiteExtras) => {\n const elt = angular.element;\n !(window.jQuery && elt.fn && elt.fn.jquery) ? (new JQLiteExtras()).registerFor(elt) : null;\n ElementRoutines.addCSSRules();\n }])\n\n .directive('uiScrollViewport', function () {\n return {\n restrict: 'A',\n controller: [\n '$scope',\n '$element',\n function (scope, element) {\n this.container = element;\n this.viewport = element;\n this.scope = scope;\n\n angular.forEach(element.children(), child => {\n if (child.tagName.toLowerCase() === 'tbody') {\n this.viewport = angular.element(child);\n }\n });\n\n return this;\n }\n ]\n };\n })\n\n .directive('uiScroll', [\n '$log',\n '$injector',\n '$rootScope',\n '$timeout',\n '$interval',\n '$q',\n '$parse',\n function (console, $injector, $rootScope, $timeout, $interval, $q, $parse) {\n\n return {\n require: ['?^uiScrollViewport'],\n restrict: 'A',\n transclude: 'element',\n priority: 1000,\n terminal: true,\n link: link\n };\n\n function link($scope, element, $attr, controllers, linker) {\n const match = $attr.uiScroll.match(/^\\s*(\\w+)\\s+in\\s+([(\\w|\\$)\\.]+)\\s*$/);\n if (!match) {\n throw new Error('Expected uiScroll in form of \\'_item_ in _datasource_\\' but got \\'' + $attr.uiScroll + '\\'');\n }\n\n function parseNumber(value, defaultValue, isFloat) {\n if (!isFloat) {\n value = value === null ? defaultValue : Math.floor(value);\n }\n return isNaN(value) ? defaultValue : value;\n }\n\n function parseNumericAttr(value, defaultValue, isFloat) {\n const result = $parse(value)($scope);\n return parseNumber(result, defaultValue, isFloat);\n }\n\n const BUFFER_MIN = 3;\n const BUFFER_DEFAULT = 10;\n const PADDING_MIN = 0.3;\n const PADDING_DEFAULT = 0.5;\n const START_INDEX_DEFAULT = 1;\n const MAX_VIEWPORT_DELAY = 500;\n const VIEWPORT_POLLING_INTERVAL = 50;\n\n let datasource = null;\n const itemName = match[1];\n const datasourceName = match[2];\n const viewportController = controllers[0];\n const bufferSize = Math.max(BUFFER_MIN, parseNumericAttr($attr.bufferSize, BUFFER_DEFAULT));\n const padding = Math.max(PADDING_MIN, parseNumericAttr($attr.padding, PADDING_DEFAULT, true));\n let startIndex = parseNumericAttr($attr.startIndex, START_INDEX_DEFAULT);\n let ridActual = 0; // current data revision id\n let pending = [];\n\n const elementRoutines = new ElementRoutines($injector, $q);\n const buffer = new ScrollBuffer(elementRoutines, bufferSize, startIndex);\n const viewport = new Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding);\n const adapter = new Adapter($scope, $parse, $attr, viewport, buffer, doAdjust, reload);\n\n if (viewportController) {\n viewportController.adapter = adapter;\n }\n\n const isDatasourceValid = () =>\n Object.prototype.toString.call(datasource) === '[object Object]' && typeof datasource.get === 'function';\n\n datasource = $parse(datasourceName)($scope); // try to get datasource on scope\n if (!isDatasourceValid()) {\n datasource = $injector.get(datasourceName); // try to inject datasource as service\n if (!isDatasourceValid()) {\n throw new Error(datasourceName + ' is not a valid datasource');\n }\n }\n\n let onRenderHandlers = [];\n function onRenderHandlersRunner() {\n onRenderHandlers.forEach(handler => handler.run());\n onRenderHandlers = [];\n }\n function persistDatasourceIndex(datasource, propName) {\n let getter;\n // need to postpone min/maxIndexUser processing if the view is empty\n if(angular.isNumber(datasource[propName])) {\n getter = datasource[propName];\n if(angular.isNumber(getter)) {\n onRenderHandlers = onRenderHandlers.filter(handler => handler.id !== propName);\n onRenderHandlers.push({\n id: propName,\n run: () => datasource[propName] = getter\n });\n }\n }\n }\n\n function defineDatasourceIndex(datasource, propName, propUserName) {\n const descriptor = Object.getOwnPropertyDescriptor(datasource, propName);\n if (descriptor && (descriptor.set || descriptor.get)) {\n return;\n }\n let getter;\n persistDatasourceIndex(datasource, propName);\n Object.defineProperty(datasource, propName, {\n set: (value) => {\n getter = value;\n if(pending.length && !buffer.length) {\n persistDatasourceIndex(datasource, propName);\n return;\n }\n buffer[propUserName] = value;\n const topPaddingHeightOld = viewport.topDataPos();\n viewport.adjustPaddings();\n if (propName === 'minIndex') {\n viewport.onAfterMinIndexSet(topPaddingHeightOld);\n }\n },\n get: () => getter\n });\n }\n\n defineDatasourceIndex(datasource, 'minIndex', 'minIndexUser');\n defineDatasourceIndex(datasource, 'maxIndex', 'maxIndexUser');\n\n const fetchNext = (datasource.get.length !== 2) ?\n (success) => datasource.get(buffer.next, bufferSize, success) :\n (success) => {\n datasource.get({\n index: buffer.next,\n append: buffer.length ? buffer[buffer.length - 1].item : void 0,\n count: bufferSize\n }, success);\n };\n\n const fetchPrevious = (datasource.get.length !== 2) ?\n (success) => datasource.get(buffer.first - bufferSize, bufferSize, success) :\n (success) => {\n datasource.get({\n index: buffer.first - bufferSize,\n prepend: buffer.length ? buffer[0].item : void 0,\n count: bufferSize\n }, success);\n };\n\n const initialize = () => {\n let tryCount = 0;\n if(!viewport.applyContainerStyle()) {\n const timer = $interval(() => {\n tryCount++;\n if(viewport.applyContainerStyle()) {\n $interval.cancel(timer);\n doAdjust();\n }\n if(tryCount * VIEWPORT_POLLING_INTERVAL >= MAX_VIEWPORT_DELAY) {\n $interval.cancel(timer);\n throw Error(`ui-scroll directive requires a viewport with non-zero height in ${MAX_VIEWPORT_DELAY}ms`);\n }\n }, VIEWPORT_POLLING_INTERVAL);\n }\n else {\n doAdjust();\n }\n };\n\n /**\n * Build padding elements\n *\n * Calling linker is the only way I found to get access to the tag name of the template\n * to prevent the directive scope from pollution a new scope is created and destroyed\n * right after the builder creation is completed\n */\n linker((clone, scope) => {\n viewport.createPaddingElements(clone[0]);\n // we do not include the clone in the DOM. It means that the nested directives will not\n // be able to reach the parent directives, but in this case it is intentional because we\n // created the clone to access the template tag name\n scope.$destroy();\n clone.remove();\n });\n\n $scope.$on('$destroy', () => {\n unbindEvents();\n viewport.unbind('mousewheel', wheelHandler);\n });\n\n viewport.bind('mousewheel', wheelHandler);\n\n initialize();\n\n /* Private function definitions */\n\n function isInvalid(rid) {\n return (rid && rid !== ridActual) || $scope.$$destroyed;\n }\n\n function bindEvents() {\n viewport.bind('resize', resizeAndScrollHandler);\n viewport.bind('scroll', resizeAndScrollHandler);\n }\n\n function unbindEvents() {\n viewport.unbind('resize', resizeAndScrollHandler);\n viewport.unbind('scroll', resizeAndScrollHandler);\n }\n\n function reload() {\n viewport.resetTopPadding();\n viewport.resetBottomPadding();\n if (arguments.length) {\n startIndex = parseNumber(arguments[0], START_INDEX_DEFAULT, false);\n }\n buffer.reset(startIndex);\n persistDatasourceIndex(datasource, 'minIndex');\n persistDatasourceIndex(datasource, 'maxIndex');\n doAdjust();\n }\n\n function isElementVisible(wrapper) {\n return wrapper.element.height() && wrapper.element[0].offsetParent;\n }\n\n function visibilityWatcher(wrapper) {\n if (isElementVisible(wrapper)) {\n buffer.forEach((item) => {\n if (typeof item.unregisterVisibilityWatcher === 'function') {\n item.unregisterVisibilityWatcher();\n delete item.unregisterVisibilityWatcher;\n }\n });\n if (!pending.length) {\n $timeout(() => doAdjust());\n }\n }\n }\n\n function insertWrapperContent(wrapper, insertAfter) {\n createElement(wrapper, insertAfter, viewport.insertElement);\n if (!isElementVisible(wrapper)) {\n wrapper.unregisterVisibilityWatcher = wrapper.scope.$watch(() => visibilityWatcher(wrapper));\n }\n elementRoutines.hideElement(wrapper); // hide inserted elements before data binding\n }\n\n function createElement(wrapper, insertAfter, insertElement) {\n let promises = null;\n const sibling = (insertAfter > 0) ? buffer[insertAfter - 1].element : undefined;\n linker((clone, scope) => {\n promises = insertElement(clone, sibling);\n wrapper.element = clone;\n wrapper.scope = scope;\n scope[itemName] = wrapper.item;\n });\n // ui-scroll-grid apply\n if (adapter.transform) {\n const tdInitializer = wrapper.scope.uiScrollTdInitializer;\n if (tdInitializer && tdInitializer.linking) {\n adapter.transform(wrapper.scope, wrapper.element);\n } else {\n wrapper.scope.uiScrollTdInitializer = {\n onLink: () => adapter.transform(wrapper.scope, wrapper.element),\n scope: wrapper.scope\n };\n }\n }\n return promises;\n }\n\n function updateDOM() {\n let promises = [];\n const toBePrepended = [];\n const toBeRemoved = [];\n const inserted = [];\n\n buffer.forEach((wrapper, i) => {\n switch (wrapper.op) {\n case 'prepend':\n toBePrepended.unshift(wrapper);\n break;\n case 'append':\n insertWrapperContent(wrapper, i);\n wrapper.op = 'none';\n inserted.push(wrapper);\n break;\n case 'insert':\n promises = promises.concat(createElement(wrapper, i, viewport.insertElementAnimated));\n wrapper.op = 'none';\n inserted.push(wrapper);\n break;\n case 'remove':\n toBeRemoved.push(wrapper);\n }\n });\n\n toBeRemoved.forEach((wrapper) => promises = promises.concat(viewport.removeItem(wrapper)));\n\n if (toBePrepended.length)\n toBePrepended.forEach((wrapper) => {\n insertWrapperContent(wrapper);\n wrapper.op = 'none';\n });\n\n buffer.forEach((item, i) => item.scope.$index = buffer.first + i);\n\n return {\n prepended: toBePrepended,\n removed: toBeRemoved,\n inserted: inserted,\n animated: promises\n };\n\n }\n\n function updatePaddings(rid, updates) {\n // schedule another doAdjust after animation completion\n if (updates.animated.length) {\n $q.all(updates.animated).then(() => {\n viewport.adjustPaddings();\n doAdjust(rid);\n });\n } else {\n viewport.adjustPaddings();\n }\n }\n\n function enqueueFetch(rid, updates) {\n if (viewport.shouldLoadBottom()) {\n if (!updates || buffer.effectiveHeight(updates.inserted) > 0) {\n // this means that at least one item appended in the last batch has height > 0\n if (pending.push(true) === 1) {\n adapter.loading(true);\n fetch(rid);\n }\n }\n } else if (viewport.shouldLoadTop()) {\n if ((!updates || buffer.effectiveHeight(updates.prepended) > 0) || pending[0]) {\n // this means that at least one item appended in the last batch has height > 0\n // pending[0] = true means that previous fetch was appending. We need to force at least one prepend\n // BTW there will always be at least 1 element in the pending array because bottom is fetched first\n if (pending.push(false) === 1) {\n adapter.loading(true);\n fetch(rid);\n }\n }\n }\n }\n\n function processUpdates() {\n const updates = updateDOM();\n\n // We need the item bindings to be processed before we can do adjustments\n !$scope.$$phase && !$rootScope.$$phase && $scope.$digest();\n\n updates.inserted.forEach(w => elementRoutines.showElement(w));\n updates.prepended.forEach(w => elementRoutines.showElement(w));\n return updates;\n }\n\n function doAdjust(rid) {\n if (!rid) { // dismiss pending requests\n pending = [];\n rid = ++ridActual;\n }\n\n const updates = processUpdates();\n\n if (isInvalid(rid)) {\n return;\n }\n\n updatePaddings(rid, updates);\n enqueueFetch(rid);\n\n if (!pending.length) {\n adapter.calculateProperties();\n }\n }\n\n function doAdjustAfterFetch(rid) {\n const updates = processUpdates();\n\n 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\t\t__webpack_require__.r(ns);\n \t\tObject.defineProperty(ns, 'default', { enumerable: true, value: value });\n \t\tif(mode & 2 && typeof value != 'string') for(var key in value) __webpack_require__.d(ns, key, function(key) { return value[key]; }.bind(null, key));\n \t\treturn ns;\n \t};\n\n \t// getDefaultExport function for compatibility with non-harmony modules\n \t__webpack_require__.n = function(module) {\n \t\tvar getter = module && module.__esModule ?\n \t\t\tfunction getDefault() { return module['default']; } :\n \t\t\tfunction getModuleExports() { return module; };\n \t\t__webpack_require__.d(getter, 'a', getter);\n \t\treturn getter;\n \t};\n\n \t// Object.prototype.hasOwnProperty.call\n \t__webpack_require__.o = function(object, property) { return Object.prototype.hasOwnProperty.call(object, property); };\n\n \t// __webpack_public_path__\n \t__webpack_require__.p = \"\";\n\n\n \t// Load entry module and return exports\n \treturn __webpack_require__(__webpack_require__.s = 1);\n","/*!\r\n globals: angular, window\r\n List of used element methods available in JQuery but not in JQuery Lite\r\n element.before(elem)\r\n element.height()\r\n element.outerHeight(true)\r\n element.height(value) = only for Top/Bottom padding elements\r\n element.scrollTop()\r\n element.scrollTop(value)\r\n */\r\n\r\nexport default class JQLiteExtras {\r\n\r\n registerFor(element) {\r\n let convertToPx, css, getStyle, isWindow;\r\n // angular implementation blows up if elem is the window\r\n css = angular.element.prototype.css;\r\n\r\n element.prototype.css = function (name, value) {\r\n let self = this;\r\n let elem = self[0];\r\n if (!(!elem || elem.nodeType === 3 || elem.nodeType === 8 || !elem.style)) {\r\n return css.call(self, name, value);\r\n }\r\n };\r\n\r\n // as defined in angularjs v1.0.5\r\n isWindow = (obj) => obj && obj.document && obj.location && obj.alert && obj.setInterval;\r\n\r\n function scrollTo(self, direction, value) {\r\n let elem = self[0];\r\n let [method, prop, preserve] = {\r\n top: [\r\n 'scrollTop',\r\n 'pageYOffset',\r\n 'scrollLeft'\r\n ],\r\n left: [\r\n 'scrollLeft',\r\n 'pageXOffset',\r\n 'scrollTop'\r\n ]\r\n }[direction];\r\n\r\n const isValueDefined = typeof value !== 'undefined';\r\n if (isWindow(elem)) {\r\n if (isValueDefined) {\r\n return elem.scrollTo(self[preserve].call(self), value);\r\n }\r\n return (prop in elem) ? elem[prop] : elem.document.documentElement[method];\r\n } else {\r\n if (isValueDefined) {\r\n elem[method] = value;\r\n }\r\n return elem[method];\r\n }\r\n }\r\n\r\n if (window.getComputedStyle) {\r\n getStyle = (elem) => window.getComputedStyle(elem, null);\r\n convertToPx = (elem, value) => parseFloat(value);\r\n } else {\r\n getStyle = (elem) => elem.currentStyle;\r\n convertToPx = (elem, value) => {\r\n let left, result, rs, rsLeft, style;\r\n let core_pnum = /[+-]?(?:\\d*\\.|)\\d+(?:[eE][+-]?\\d+|)/.source;\r\n let rnumnonpx = new RegExp('^(' + core_pnum + ')(?!px)[a-z%]+$', 'i');\r\n\r\n if (!rnumnonpx.test(value)) {\r\n return parseFloat(value);\r\n }\r\n\r\n // ported from JQuery\r\n style = elem.style;\r\n left = style.left;\r\n rs = elem.runtimeStyle;\r\n rsLeft = rs && rs.left;\r\n if (rs) {\r\n rs.left = style.left;\r\n }\r\n // put in the new values to get a computed style out\r\n style.left = value;\r\n result = style.pixelLeft;\r\n style.left = left;\r\n if (rsLeft) {\r\n rs.left = rsLeft;\r\n }\r\n return result;\r\n };\r\n }\r\n\r\n function getMeasurements(elem, measure) {\r\n let base, borderA, borderB, computedMarginA, computedMarginB, computedStyle, dirA, dirB, marginA, marginB, paddingA, paddingB;\r\n\r\n if (isWindow(elem)) {\r\n base = document.documentElement[{height: 'clientHeight', width: 'clientWidth'}[measure]];\r\n\r\n return {\r\n base: base,\r\n padding: 0,\r\n border: 0,\r\n margin: 0\r\n };\r\n }\r\n\r\n // Start with offset property\r\n [\r\n base,\r\n dirA,\r\n dirB\r\n ] = {\r\n width: [\r\n elem.offsetWidth,\r\n 'Left',\r\n 'Right'\r\n ],\r\n height: [\r\n elem.offsetHeight,\r\n 'Top',\r\n 'Bottom'\r\n ]\r\n }[measure];\r\n\r\n computedStyle = getStyle(elem);\r\n paddingA = convertToPx(elem, computedStyle['padding' + dirA]) || 0;\r\n paddingB = convertToPx(elem, computedStyle['padding' + dirB]) || 0;\r\n borderA = convertToPx(elem, computedStyle['border' + dirA + 'Width']) || 0;\r\n borderB = convertToPx(elem, computedStyle['border' + dirB + 'Width']) || 0;\r\n computedMarginA = computedStyle['margin' + dirA];\r\n computedMarginB = computedStyle['margin' + dirB];\r\n\r\n // I do not care for width for now, so this hack is irrelevant\r\n // if ( !supportsPercentMargin )\r\n // computedMarginA = hackPercentMargin( elem, computedStyle, computedMarginA )\r\n // computedMarginB = hackPercentMargin( elem, computedStyle, computedMarginB )\r\n marginA = convertToPx(elem, computedMarginA) || 0;\r\n marginB = convertToPx(elem, computedMarginB) || 0;\r\n\r\n return {\r\n base: base,\r\n padding: paddingA + paddingB,\r\n border: borderA + borderB,\r\n margin: marginA + marginB\r\n };\r\n }\r\n\r\n function getWidthHeight(elem, direction, measure) {\r\n let computedStyle, result;\r\n\r\n let measurements = getMeasurements(elem, direction);\r\n\r\n if (measurements.base > 0) {\r\n return {\r\n base: measurements.base - measurements.padding - measurements.border,\r\n outer: measurements.base,\r\n outerfull: measurements.base + measurements.margin\r\n }[measure];\r\n }\r\n\r\n // Fall back to computed then uncomputed css if necessary\r\n computedStyle = getStyle(elem);\r\n result = computedStyle[direction];\r\n\r\n if (result < 0 || result === null) {\r\n result = elem.style[direction] || 0;\r\n }\r\n\r\n // Normalize \"\", auto, and prepare for extra\r\n result = parseFloat(result) || 0;\r\n\r\n return {\r\n base: result - measurements.padding - measurements.border,\r\n outer: result,\r\n outerfull: result + measurements.padding + measurements.border + measurements.margin\r\n }[measure];\r\n }\r\n\r\n // define missing methods\r\n return angular.forEach({\r\n before(newElem) {\r\n var children, elem, i, j, parent, ref, self;\r\n self = this;\r\n elem = self[0];\r\n parent = self.parent();\r\n children = parent.contents();\r\n if (children[0] === elem) {\r\n return parent.prepend(newElem);\r\n } else {\r\n for (i = j = 1, ref = children.length - 1; 1 <= ref ? j <= ref : j >= ref; i = 1 <= ref ? ++j : --j) {\r\n if (children[i] === elem) {\r\n angular.element(children[i - 1]).after(newElem);\r\n return;\r\n }\r\n }\r\n throw new Error('invalid DOM structure ' + elem.outerHTML);\r\n }\r\n },\r\n height (value){\r\n var self;\r\n self = this;\r\n if (typeof value !== 'undefined') {\r\n if (angular.isNumber(value)) {\r\n value = value + 'px';\r\n }\r\n return css.call(self, 'height', value);\r\n } else {\r\n return getWidthHeight(this[0], 'height', 'base');\r\n }\r\n },\r\n outerHeight(option) {\r\n return getWidthHeight(this[0], 'height', option ? 'outerfull' : 'outer');\r\n },\r\n outerWidth(option) {\r\n return getWidthHeight(this[0], 'width', option ? 'outerfull' : 'outer');\r\n },\r\n\r\n /*\r\n The offset setter method is not implemented\r\n */\r\n offset(value) {\r\n let docElem, win;\r\n let self = this;\r\n let box = {\r\n top: 0,\r\n left: 0\r\n };\r\n let elem = self[0];\r\n let doc = elem && elem.ownerDocument;\r\n\r\n if (arguments.length) {\r\n if (value === undefined) {\r\n return self;\r\n }\r\n // TODO: implement setter\r\n throw new Error('offset setter method is not implemented');\r\n }\r\n\r\n if (!doc) {\r\n return;\r\n }\r\n\r\n docElem = doc.documentElement;\r\n\r\n // TODO: Make sure it's not a disconnected DOM node\r\n\r\n if (elem.getBoundingClientRect != null) {\r\n box = elem.getBoundingClientRect();\r\n }\r\n\r\n win = doc.defaultView || doc.parentWindow;\r\n\r\n return {\r\n top: box.top + (win.pageYOffset || docElem.scrollTop) - (docElem.clientTop || 0),\r\n left: box.left + (win.pageXOffset || docElem.scrollLeft) - (docElem.clientLeft || 0)\r\n };\r\n },\r\n scrollTop(value) {\r\n return scrollTo(this, 'top', value);\r\n },\r\n scrollLeft(value) {\r\n return scrollTo(this, 'left', value);\r\n }\r\n }, (value, key) => {\r\n if (!element.prototype[key]) {\r\n return element.prototype[key] = value;\r\n }\r\n });\r\n }\r\n\r\n}\r\n","const hideClassToken = 'ng-ui-scroll-hide';\r\n\r\nexport default class ElementRoutines {\r\n\r\n static addCSSRules() {\r\n const selector = '.' + hideClassToken;\r\n const rules = 'display: none';\r\n const sheet = document.styleSheets[0];\r\n let index;\r\n try {\r\n index = sheet.cssRules.length;\r\n } catch (err) {\r\n index = 0;\r\n }\r\n if('insertRule' in sheet) {\r\n sheet.insertRule(selector + '{' + rules + '}', index);\r\n }\r\n else if('addRule' in sheet) {\r\n sheet.addRule(selector, rules, index);\r\n }\r\n }\r\n\r\n constructor($injector, $q) {\r\n this.$animate = ($injector.has && $injector.has('$animate')) ? $injector.get('$animate') : null;\r\n this.isAngularVersionLessThen1_3 = angular.version.major === 1 && angular.version.minor < 3;\r\n this.$q = $q;\r\n }\r\n\r\n hideElement(wrapper) {\r\n wrapper.element.addClass(hideClassToken);\r\n }\r\n\r\n showElement(wrapper) {\r\n wrapper.element.removeClass(hideClassToken);\r\n }\r\n\r\n insertElement(newElement, previousElement) {\r\n previousElement.after(newElement);\r\n return [];\r\n }\r\n\r\n removeElement(wrapper) {\r\n wrapper.element.remove();\r\n wrapper.scope.$destroy();\r\n return [];\r\n }\r\n\r\n insertElementAnimated(newElement, previousElement) {\r\n if (!this.$animate) {\r\n return this.insertElement(newElement, previousElement);\r\n }\r\n\r\n if (this.isAngularVersionLessThen1_3) {\r\n const deferred = this.$q.defer();\r\n // no need for parent - previous element is never null\r\n this.$animate.enter(newElement, null, previousElement, () => deferred.resolve());\r\n\r\n return [deferred.promise];\r\n }\r\n\r\n // no need for parent - previous element is never null\r\n return [this.$animate.enter(newElement, null, previousElement)];\r\n }\r\n\r\n removeElementAnimated(wrapper) {\r\n if (!this.$animate) {\r\n return this.removeElement(wrapper);\r\n }\r\n\r\n if (this.isAngularVersionLessThen1_3) {\r\n const deferred = this.$q.defer();\r\n this.$animate.leave(wrapper.element, () => {\r\n wrapper.scope.$destroy();\r\n return deferred.resolve();\r\n });\r\n\r\n return [deferred.promise];\r\n }\r\n\r\n return [(this.$animate.leave(wrapper.element)).then(() => wrapper.scope.$destroy())];\r\n }\r\n}","export default function ScrollBuffer(elementRoutines, bufferSize, startIndex) {\r\n const buffer = Object.create(Array.prototype);\r\n\r\n angular.extend(buffer, {\r\n size: bufferSize,\r\n\r\n reset(startIndex) {\r\n buffer.remove(0, buffer.length);\r\n buffer.eof = false;\r\n buffer.bof = false;\r\n buffer.first = startIndex;\r\n buffer.next = startIndex;\r\n buffer.minIndex = startIndex;\r\n buffer.maxIndex = startIndex;\r\n buffer.minIndexUser = null;\r\n buffer.maxIndexUser = null;\r\n },\r\n\r\n append(items) {\r\n items.forEach((item) => {\r\n ++buffer.next;\r\n buffer.insert('append', item);\r\n });\r\n buffer.maxIndex = buffer.eof ? buffer.next - 1 : Math.max(buffer.next - 1, buffer.maxIndex);\r\n },\r\n\r\n prepend(items) {\r\n items.reverse().forEach((item) => {\r\n --buffer.first;\r\n buffer.insert('prepend', item);\r\n });\r\n buffer.minIndex = buffer.bof ? buffer.minIndex = buffer.first : Math.min(buffer.first, buffer.minIndex);\r\n },\r\n\r\n /**\r\n * inserts wrapped element in the buffer\r\n * the first argument is either operation keyword (see below) or a number for operation 'insert'\r\n * for insert the number is the index for the buffer element the new one have to be inserted after\r\n * operations: 'append', 'prepend', 'insert', 'remove', 'update', 'none'\r\n */\r\n insert(operation, item, isTop) {\r\n const wrapper = {\r\n item: item\r\n };\r\n\r\n if (operation % 1 === 0) {// it is an insert\r\n wrapper.op = 'insert';\r\n buffer.splice(operation, 0, wrapper);\r\n if(isTop) {\r\n buffer.first--;\r\n }\r\n else {\r\n buffer.next++;\r\n }\r\n } else {\r\n wrapper.op = operation;\r\n switch (operation) {\r\n case 'append':\r\n buffer.push(wrapper);\r\n break;\r\n case 'prepend':\r\n buffer.unshift(wrapper);\r\n break;\r\n }\r\n }\r\n },\r\n\r\n // removes elements from buffer\r\n remove(arg1, arg2) {\r\n if (angular.isNumber(arg1)) {\r\n // removes items from arg1 (including) through arg2 (excluding)\r\n for (let i = arg1; i < arg2; i++) {\r\n elementRoutines.removeElement(buffer[i]);\r\n }\r\n return buffer.splice(arg1, arg2 - arg1);\r\n }\r\n // removes single item(wrapper) from the buffer\r\n buffer.splice(buffer.indexOf(arg1), 1);\r\n if(arg1._op === 'isTop' && buffer.first === this.getAbsMinIndex()) {\r\n this.incrementMinIndex();\r\n }\r\n else {\r\n this.decrementMaxIndex();\r\n }\r\n if(arg1._op === 'isTop') {\r\n buffer.first++;\r\n }\r\n else {\r\n buffer.next--;\r\n }\r\n if(!buffer.length) {\r\n buffer.first = 1;\r\n buffer.next = 1;\r\n }\r\n\r\n return elementRoutines.removeElementAnimated(arg1);\r\n },\r\n\r\n incrementMinIndex() {\r\n if(buffer.minIndexUser !== null) {\r\n if(buffer.minIndex > buffer.minIndexUser) {\r\n buffer.minIndexUser++;\r\n return;\r\n }\r\n if(buffer.minIndex === buffer.minIndexUser) {\r\n buffer.minIndexUser++;\r\n }\r\n }\r\n buffer.minIndex++;\r\n },\r\n\r\n decrementMaxIndex() {\r\n if(buffer.maxIndexUser !== null && buffer.maxIndex <= buffer.maxIndexUser) {\r\n buffer.maxIndexUser--;\r\n }\r\n buffer.maxIndex--;\r\n },\r\n\r\n getAbsMinIndex() {\r\n if(buffer.minIndexUser !== null) {\r\n return Math.min(buffer.minIndexUser, buffer.minIndex);\r\n }\r\n return buffer.minIndex;\r\n },\r\n\r\n getAbsMaxIndex() {\r\n if(buffer.maxIndexUser !== null) {\r\n return Math.max(buffer.maxIndexUser, buffer.maxIndex);\r\n }\r\n return buffer.maxIndex;\r\n },\r\n\r\n effectiveHeight(elements) {\r\n if (!elements.length) {\r\n return 0;\r\n }\r\n let top = Number.MAX_VALUE;\r\n let bottom = Number.NEGATIVE_INFINITY;\r\n elements.forEach((wrapper) => {\r\n if (wrapper.element[0].offsetParent) {\r\n // element style is not display:none\r\n top = Math.min(top, wrapper.element.offset().top);\r\n bottom = Math.max(bottom, wrapper.element.offset().top + wrapper.element.outerHeight(true));\r\n }\r\n });\r\n return Math.max(0, bottom - top);\r\n }\r\n\r\n });\r\n\r\n buffer.reset(startIndex);\r\n\r\n return buffer;\r\n}\r\n","// Can't just extend the Array, due to Babel does not support built-in classes extending\r\n// This solution was taken from https://stackoverflow.com/questions/46897414/es6-class-extends-array-workaround-for-es5-babel-transpile\r\nclass CacheProto {\r\n add(item) {\r\n for (let i = this.length - 1; i >= 0; i--) {\r\n if (this[i].index === item.scope.$index) {\r\n this[i].height = item.element.outerHeight();\r\n return;\r\n }\r\n }\r\n this.push({\r\n index: item.scope.$index,\r\n height: item.element.outerHeight()\r\n });\r\n this.sort((a, b) => ((a.index < b.index) ? -1 : ((a.index > b.index) ? 1 : 0)));\r\n }\r\n\r\n remove(argument, _isTop) {\r\n const index = argument % 1 === 0 ? argument : argument.scope.$index;\r\n const isTop = argument % 1 === 0 ? _isTop : argument._op === 'isTop';\r\n for (let i = this.length - 1; i >= 0; i--) {\r\n if (this[i].index === index) {\r\n this.splice(i, 1);\r\n break;\r\n }\r\n }\r\n if(!isTop) {\r\n for (let i = this.length - 1; i >= 0; i--) {\r\n if (this[i].index > index) {\r\n this[i].index--;\r\n }\r\n }\r\n }\r\n }\r\n\r\n clear() {\r\n this.length = 0;\r\n }\r\n}\r\n\r\nfunction Cache() {\r\n const instance = [];\r\n instance.push.apply(instance, arguments);\r\n Object.setPrototypeOf(instance, Cache.prototype);\r\n return instance;\r\n}\r\nCache.prototype = Object.create(Array.prototype);\r\nObject.getOwnPropertyNames(CacheProto.prototype).forEach(methodName =>\r\n Cache.prototype[methodName] = CacheProto.prototype[methodName]\r\n);\r\n\r\nfunction generateElement(template) {\r\n if(template.nodeType !== Node.ELEMENT_NODE) {\r\n throw new Error('ui-scroll directive requires an Element node for templating the view');\r\n }\r\n let element;\r\n switch (template.tagName.toLowerCase()) {\r\n case 'dl':\r\n throw new Error(`ui-scroll directive does not support <${template.tagName}> as a repeating tag: ${template.outerHTML}`);\r\n case 'tr':\r\n let table = angular.element('
    ');\r\n element = table.find('tr');\r\n break;\r\n case 'li':\r\n element = angular.element('
  • ');\r\n break;\r\n default:\r\n element = angular.element('
    ');\r\n }\r\n return element;\r\n}\r\n\r\nclass Padding {\r\n constructor(template) {\r\n this.element = generateElement(template);\r\n this.cache = new Cache();\r\n }\r\n\r\n height() {\r\n return this.element.height.apply(this.element, arguments);\r\n }\r\n}\r\n\r\nexport default Padding;","import Padding from './padding';\r\n\r\nexport default function Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding) {\r\n let topPadding = null;\r\n let bottomPadding = null;\r\n const viewport = viewportController && viewportController.viewport ? viewportController.viewport : angular.element(window);\r\n const container = viewportController && viewportController.container ? viewportController.container : undefined;\r\n const scope = viewportController && viewportController.scope ? viewportController.scope : $rootScope;\r\n\r\n viewport.css({\r\n 'overflow-anchor': 'none',\r\n 'overflow-y': 'auto',\r\n 'display': 'block'\r\n });\r\n\r\n function bufferPadding() {\r\n return viewport.outerHeight() * padding; // some extra space to initiate preload\r\n }\r\n\r\n angular.extend(viewport, {\r\n getScope() {\r\n return scope;\r\n },\r\n\r\n createPaddingElements(template) {\r\n topPadding = new Padding(template);\r\n bottomPadding = new Padding(template);\r\n element.before(topPadding.element);\r\n element.after(bottomPadding.element);\r\n topPadding.height(0);\r\n bottomPadding.height(0);\r\n },\r\n\r\n applyContainerStyle() {\r\n if (!container) {\r\n return true;\r\n }\r\n if(container !== viewport) {\r\n viewport.css('height', window.getComputedStyle(container[0]).height);\r\n }\r\n return viewport.height() > 0;\r\n },\r\n\r\n bottomDataPos() {\r\n let scrollHeight = viewport[0].scrollHeight;\r\n scrollHeight = scrollHeight != null ? scrollHeight : viewport[0].document.documentElement.scrollHeight;\r\n return scrollHeight - bottomPadding.height();\r\n },\r\n\r\n topDataPos() {\r\n return topPadding.height();\r\n },\r\n\r\n bottomVisiblePos() {\r\n return viewport.scrollTop() + viewport.outerHeight();\r\n },\r\n\r\n topVisiblePos() {\r\n return viewport.scrollTop();\r\n },\r\n\r\n insertElement(e, sibling) {\r\n return elementRoutines.insertElement(e, sibling || topPadding.element);\r\n },\r\n\r\n insertElementAnimated(e, sibling) {\r\n return elementRoutines.insertElementAnimated(e, sibling || topPadding.element);\r\n },\r\n\r\n shouldLoadBottom() {\r\n return !buffer.eof && viewport.bottomDataPos() < viewport.bottomVisiblePos() + bufferPadding();\r\n },\r\n\r\n clipBottom() {\r\n // clip the invisible items off the bottom\r\n let overage = 0;\r\n let overageHeight = 0;\r\n let itemHeight = 0;\r\n let emptySpaceHeight = viewport.bottomDataPos() - viewport.bottomVisiblePos() - bufferPadding();\r\n\r\n for (let i = buffer.length - 1; i >= 0; i--) {\r\n itemHeight = buffer[i].element.outerHeight(true);\r\n if (overageHeight + itemHeight > emptySpaceHeight) {\r\n break;\r\n }\r\n bottomPadding.cache.add(buffer[i]);\r\n overageHeight += itemHeight;\r\n overage++;\r\n }\r\n\r\n if (overage > 0) {\r\n buffer.eof = false;\r\n buffer.remove(buffer.length - overage, buffer.length);\r\n buffer.next -= overage;\r\n viewport.adjustPaddings();\r\n }\r\n },\r\n\r\n shouldLoadTop() {\r\n return !buffer.bof && (viewport.topDataPos() > viewport.topVisiblePos() - bufferPadding());\r\n },\r\n\r\n clipTop() {\r\n // clip the invisible items off the top\r\n let overage = 0;\r\n let overageHeight = 0;\r\n let itemHeight = 0;\r\n let emptySpaceHeight = viewport.topVisiblePos() - viewport.topDataPos() - bufferPadding();\r\n\r\n for (let i = 0; i < buffer.length; i++) {\r\n itemHeight = buffer[i].element.outerHeight(true);\r\n if (overageHeight + itemHeight > emptySpaceHeight) {\r\n break;\r\n }\r\n topPadding.cache.add(buffer[i]);\r\n overageHeight += itemHeight;\r\n overage++;\r\n }\r\n\r\n if (overage > 0) {\r\n // we need to adjust top padding element before items are removed from top\r\n // to avoid strange behaviour of scroll bar during remove top items when we are at the very bottom\r\n topPadding.height(topPadding.height() + overageHeight);\r\n buffer.bof = false;\r\n buffer.remove(0, overage);\r\n buffer.first += overage;\r\n }\r\n },\r\n\r\n adjustPaddings() {\r\n if (!buffer.length) {\r\n return;\r\n }\r\n\r\n // precise heights calculation based on items that are in buffer or that were in buffer once\r\n const visibleItemsHeight = buffer.reduce((summ, item) => summ + item.element.outerHeight(true), 0);\r\n\r\n let topPaddingHeight = 0, topCount = 0;\r\n topPadding.cache.forEach(item => {\r\n if(item.index < buffer.first) {\r\n topPaddingHeight += item.height;\r\n topCount++;\r\n }\r\n });\r\n\r\n let bottomPaddingHeight = 0, bottomCount = 0;\r\n bottomPadding.cache.forEach(item => {\r\n if(item.index >= buffer.next) {\r\n bottomPaddingHeight += item.height;\r\n bottomCount++;\r\n }\r\n });\r\n\r\n const totalHeight = visibleItemsHeight + topPaddingHeight + bottomPaddingHeight;\r\n const averageItemHeight = totalHeight / (topCount + bottomCount + buffer.length);\r\n\r\n // average heights calculation, items that have never been reached\r\n let adjustTopPadding = buffer.minIndexUser !== null && buffer.minIndex > buffer.minIndexUser;\r\n let adjustBottomPadding = buffer.maxIndexUser !== null && buffer.maxIndex < buffer.maxIndexUser;\r\n let topPaddingHeightAdd = adjustTopPadding ? (buffer.minIndex - buffer.minIndexUser) * averageItemHeight : 0;\r\n let bottomPaddingHeightAdd = adjustBottomPadding ? (buffer.maxIndexUser - buffer.maxIndex) * averageItemHeight : 0;\r\n\r\n // paddings combine adjustment\r\n topPadding.height(topPaddingHeight + topPaddingHeightAdd);\r\n bottomPadding.height(bottomPaddingHeight + bottomPaddingHeightAdd);\r\n },\r\n\r\n onAfterMinIndexSet(topPaddingHeightOld) {\r\n // additional scrollTop adjustment in case of datasource.minIndex external set\r\n if (buffer.minIndexUser !== null && buffer.minIndex > buffer.minIndexUser) {\r\n let diff = topPadding.height() - topPaddingHeightOld;\r\n viewport.scrollTop(viewport.scrollTop() + diff);\r\n while((diff -= viewport.scrollTop()) > 0) {\r\n bottomPadding.height(bottomPadding.height() + diff);\r\n viewport.scrollTop(viewport.scrollTop() + diff);\r\n }\r\n }\r\n },\r\n\r\n onAfterPrepend(updates) {\r\n if (!updates.prepended.length)\r\n return;\r\n const height = buffer.effectiveHeight(updates.prepended);\r\n const paddingHeight = topPadding.height() - height;\r\n if (paddingHeight >= 0) {\r\n topPadding.height(paddingHeight);\r\n }\r\n else {\r\n topPadding.height(0);\r\n viewport.scrollTop(viewport.scrollTop() - paddingHeight);\r\n }\r\n },\r\n\r\n resetTopPadding() {\r\n topPadding.height(0);\r\n topPadding.cache.clear();\r\n },\r\n\r\n resetBottomPadding() {\r\n bottomPadding.height(0);\r\n bottomPadding.cache.clear();\r\n },\r\n\r\n removeCacheItem(item, isTop) {\r\n topPadding.cache.remove(item, isTop);\r\n bottomPadding.cache.remove(item, isTop);\r\n },\r\n\r\n removeItem(item) {\r\n this.removeCacheItem(item);\r\n return buffer.remove(item);\r\n }\r\n });\r\n\r\n return viewport;\r\n}\r\n","class Adapter {\r\n\r\n constructor($scope, $parse, $attr, viewport, buffer, doAdjust, reload) {\r\n this.$parse = $parse;\r\n this.$attr = $attr;\r\n this.viewport = viewport;\r\n this.buffer = buffer;\r\n\r\n this.doAdjust = doAdjust;\r\n this.reload = reload;\r\n\r\n this.isLoading = false;\r\n this.disabled = false;\r\n\r\n const viewportScope = viewport.getScope();\r\n this.startScope = viewportScope.$parent ? viewportScope : $scope;\r\n\r\n this.publicContext = {};\r\n this.assignAdapter($attr.adapter);\r\n this.generatePublicContext();\r\n }\r\n\r\n assignAdapter(adapterAttr) {\r\n if (!adapterAttr || !(adapterAttr = adapterAttr.replace(/^\\s+|\\s+$/gm, ''))) {\r\n return;\r\n }\r\n let adapterOnScope;\r\n\r\n try {\r\n this.$parse(adapterAttr).assign(this.startScope, {});\r\n adapterOnScope = this.$parse(adapterAttr)(this.startScope);\r\n }\r\n catch (error) {\r\n error.message = `Angular ui-scroll Adapter assignment exception.\\n` +\r\n `Can't parse \"${adapterAttr}\" expression.\\n` +\r\n error.message;\r\n throw error;\r\n }\r\n\r\n angular.extend(adapterOnScope, this.publicContext);\r\n this.publicContext = adapterOnScope;\r\n }\r\n\r\n generatePublicContext() {\r\n // these methods will be accessible out of ui-scroll via user defined adapter\r\n const publicMethods = ['reload', 'applyUpdates', 'append', 'prepend', 'isBOF', 'isEOF', 'isEmpty'];\r\n for (let i = publicMethods.length - 1; i >= 0; i--) {\r\n this.publicContext[publicMethods[i]] = this[publicMethods[i]].bind(this);\r\n }\r\n\r\n // these read-only props will be accessible out of ui-scroll via user defined adapter\r\n const publicProps = ['isLoading', 'topVisible', 'topVisibleElement', 'topVisibleScope', 'bottomVisible', 'bottomVisibleElement', 'bottomVisibleScope'];\r\n for (let i = publicProps.length - 1; i >= 0; i--) {\r\n let property, attr = this.$attr[publicProps[i]];\r\n Object.defineProperty(this, publicProps[i], {\r\n get: () => property,\r\n set: (value) => {\r\n property = value;\r\n this.publicContext[publicProps[i]] = value;\r\n if (attr) {\r\n this.$parse(attr).assign(this.startScope, value);\r\n }\r\n }\r\n });\r\n }\r\n\r\n // non-read-only public property\r\n Object.defineProperty(this.publicContext, 'disabled', {\r\n get: () => this.disabled,\r\n set: (value) => (!(this.disabled = value)) ? this.doAdjust() : null\r\n });\r\n }\r\n\r\n loading(value) {\r\n this.isLoading = value;\r\n }\r\n\r\n isBOF() {\r\n return this.buffer.bof;\r\n }\r\n\r\n isEOF() {\r\n return this.buffer.eof;\r\n }\r\n\r\n isEmpty() {\r\n return !this.buffer.length;\r\n }\r\n\r\n append(newItems) {\r\n this.buffer.append(newItems);\r\n this.doAdjust();\r\n this.viewport.clipTop();\r\n this.viewport.clipBottom();\r\n }\r\n\r\n prepend(newItems) {\r\n this.buffer.prepend(newItems);\r\n this.doAdjust();\r\n this.viewport.clipTop();\r\n this.viewport.clipBottom();\r\n }\r\n\r\n applyUpdates(arg1, arg2) {\r\n if (typeof arg1 === 'function') {\r\n this.applyUpdatesFunc(arg1);\r\n } else {\r\n this.applyUpdatesIndex(arg1, arg2);\r\n }\r\n this.doAdjust();\r\n }\r\n\r\n applyUpdatesFunc(cb) {\r\n this.buffer.slice(0).forEach((wrapper) => {\r\n // we need to do it on the buffer clone, because buffer content\r\n // may change as we iterate through\r\n this.applyUpdate(wrapper, cb(wrapper.item, wrapper.scope, wrapper.element));\r\n });\r\n }\r\n\r\n applyUpdatesIndex(index, newItems) {\r\n if (index % 1 !== 0) {\r\n throw new Error('applyUpdates - ' + index + ' is not a valid index (should be an integer)');\r\n }\r\n const _index = index - this.buffer.first;\r\n\r\n // apply updates only within buffer\r\n if (_index >= 0 && _index < this.buffer.length) {\r\n this.applyUpdate(this.buffer[_index], newItems);\r\n }\r\n // out-of-buffer case: deletion may affect Paddings\r\n else if(index >= this.buffer.getAbsMinIndex() && index <= this.buffer.getAbsMaxIndex()) {\r\n if(angular.isArray(newItems) && !newItems.length) {\r\n this.viewport.removeCacheItem(index, index === this.buffer.minIndex);\r\n if(index === this.buffer.getAbsMinIndex()) {\r\n this.buffer.incrementMinIndex();\r\n }\r\n else {\r\n this.buffer.decrementMaxIndex();\r\n }\r\n }\r\n }\r\n }\r\n\r\n applyUpdate(wrapper, newItems) {\r\n if (!angular.isArray(newItems)) {\r\n return;\r\n }\r\n let position = this.buffer.indexOf(wrapper);\r\n if (!newItems.reverse().some(newItem => newItem === wrapper.item)) {\r\n wrapper.op = 'remove';\r\n if(position === 0 && !newItems.length) {\r\n wrapper._op = 'isTop'; // to catch \"first\" edge case on remove\r\n }\r\n }\r\n newItems.forEach((newItem) => {\r\n if (newItem === wrapper.item) {\r\n position--;\r\n } else {\r\n // 3 parameter (isTop) is to catch \"first\" edge case on insert\r\n this.buffer.insert(position + 1, newItem, position === -1);\r\n }\r\n });\r\n }\r\n\r\n calculateProperties() {\r\n let rowTop = null, topHeight = 0;\r\n let topDone = false, bottomDone = false;\r\n const length = this.buffer.length;\r\n\r\n for (let i = 0; i < length; i++) {\r\n const item = this.buffer[i];\r\n const itemTop = item.element.offset().top;\r\n\r\n if (rowTop !== itemTop) { // a new row condition\r\n const itemHeight = item.element.outerHeight(true);\r\n const top = this.viewport.topDataPos() + topHeight + itemHeight;\r\n\r\n if (!topDone && top > this.viewport.topVisiblePos()) {\r\n topDone = true;\r\n this['topVisible'] = item.item;\r\n this['topVisibleElement'] = item.element;\r\n this['topVisibleScope'] = item.scope;\r\n }\r\n if (!bottomDone && (top >= this.viewport.bottomVisiblePos() || (i === length - 1 && this.isEOF()))) {\r\n bottomDone = true;\r\n this['bottomVisible'] = item.item;\r\n this['bottomVisibleElement'] = item.element;\r\n this['bottomVisibleScope'] = item.scope;\r\n }\r\n topHeight += itemHeight;\r\n }\r\n rowTop = itemTop;\r\n\r\n if (topDone && bottomDone) {\r\n break;\r\n }\r\n }\r\n }\r\n\r\n}\r\n\r\nexport default Adapter;\r\n","import JQLiteExtras from './modules/jqLiteExtras';\nimport ElementRoutines from './modules/elementRoutines.js';\nimport ScrollBuffer from './modules/buffer.js';\nimport Viewport from './modules/viewport.js';\nimport Adapter from './modules/adapter.js';\n\nangular.module('ui.scroll', [])\n\n .constant('JQLiteExtras', JQLiteExtras)\n .run(['JQLiteExtras', (JQLiteExtras) => {\n const elt = angular.element;\n !(window.jQuery && elt.fn && elt.fn.jquery) ? (new JQLiteExtras()).registerFor(elt) : null;\n ElementRoutines.addCSSRules();\n }])\n\n .directive('uiScrollViewport', function () {\n return {\n restrict: 'A',\n controller: [\n '$scope',\n '$element',\n function (scope, element) {\n this.container = element;\n this.viewport = element;\n this.scope = scope;\n\n angular.forEach(element.children(), child => {\n if (child.tagName.toLowerCase() === 'tbody') {\n this.viewport = angular.element(child);\n }\n });\n\n return this;\n }\n ]\n };\n })\n\n .directive('uiScroll', [\n '$log',\n '$injector',\n '$rootScope',\n '$timeout',\n '$interval',\n '$q',\n '$parse',\n function (console, $injector, $rootScope, $timeout, $interval, $q, $parse) {\n\n return {\n require: ['?^uiScrollViewport'],\n restrict: 'A',\n transclude: 'element',\n priority: 1000,\n terminal: true,\n link: link\n };\n\n function link($scope, element, $attr, controllers, linker) {\n const match = $attr.uiScroll.match(/^\\s*(\\w+)\\s+in\\s+([(\\w|\\$)\\.]+)\\s*$/);\n if (!match) {\n throw new Error('Expected uiScroll in form of \\'_item_ in _datasource_\\' but got \\'' + $attr.uiScroll + '\\'');\n }\n\n function parseNumber(value, defaultValue, isFloat) {\n if (!isFloat) {\n value = value === null ? defaultValue : Math.floor(value);\n }\n return isNaN(value) ? defaultValue : value;\n }\n\n function parseNumericAttr(value, defaultValue, isFloat) {\n const result = $parse(value)($scope);\n return parseNumber(result, defaultValue, isFloat);\n }\n\n const BUFFER_MIN = 3;\n const BUFFER_DEFAULT = 10;\n const PADDING_MIN = 0.3;\n const PADDING_DEFAULT = 0.5;\n const START_INDEX_DEFAULT = 1;\n const MAX_VIEWPORT_DELAY = 500;\n const VIEWPORT_POLLING_INTERVAL = 50;\n\n let datasource = null;\n const itemName = match[1];\n const datasourceName = match[2];\n const viewportController = controllers[0];\n const bufferSize = Math.max(BUFFER_MIN, parseNumericAttr($attr.bufferSize, BUFFER_DEFAULT));\n const padding = Math.max(PADDING_MIN, parseNumericAttr($attr.padding, PADDING_DEFAULT, true));\n let startIndex = parseNumericAttr($attr.startIndex, START_INDEX_DEFAULT);\n let ridActual = 0; // current data revision id\n let pending = [];\n\n const elementRoutines = new ElementRoutines($injector, $q);\n const buffer = new ScrollBuffer(elementRoutines, bufferSize, startIndex);\n const viewport = new Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding);\n const adapter = new Adapter($scope, $parse, $attr, viewport, buffer, doAdjust, reload);\n\n if (viewportController) {\n viewportController.adapter = adapter;\n }\n\n const isDatasourceValid = () =>\n Object.prototype.toString.call(datasource) === '[object Object]' && typeof datasource.get === 'function';\n\n datasource = $parse(datasourceName)($scope); // try to get datasource on scope\n if (!isDatasourceValid()) {\n datasource = $injector.get(datasourceName); // try to inject datasource as service\n if (!isDatasourceValid()) {\n throw new Error(datasourceName + ' is not a valid datasource');\n }\n }\n\n let onRenderHandlers = [];\n function onRenderHandlersRunner() {\n onRenderHandlers.forEach(handler => handler.run());\n onRenderHandlers = [];\n }\n function persistDatasourceIndex(datasource, propName) {\n let getter;\n // need to postpone min/maxIndexUser processing if the view is empty\n if(angular.isNumber(datasource[propName])) {\n getter = datasource[propName];\n if(angular.isNumber(getter)) {\n onRenderHandlers = onRenderHandlers.filter(handler => handler.id !== propName);\n onRenderHandlers.push({\n id: propName,\n run: () => datasource[propName] = getter\n });\n }\n }\n }\n\n function defineDatasourceIndex(datasource, propName, propUserName) {\n const descriptor = Object.getOwnPropertyDescriptor(datasource, propName);\n if (descriptor && (descriptor.set || descriptor.get)) {\n return;\n }\n let getter;\n persistDatasourceIndex(datasource, propName);\n Object.defineProperty(datasource, propName, {\n set: (value) => {\n getter = value;\n if(pending.length && !buffer.length) {\n persistDatasourceIndex(datasource, propName);\n return;\n }\n buffer[propUserName] = value;\n const topPaddingHeightOld = viewport.topDataPos();\n viewport.adjustPaddings();\n if (propName === 'minIndex') {\n viewport.onAfterMinIndexSet(topPaddingHeightOld);\n }\n },\n get: () => getter\n });\n }\n\n defineDatasourceIndex(datasource, 'minIndex', 'minIndexUser');\n defineDatasourceIndex(datasource, 'maxIndex', 'maxIndexUser');\n\n const fetchNext = (datasource.get.length !== 2) ?\n (success) => datasource.get(buffer.next, bufferSize, success) :\n (success) => {\n datasource.get({\n index: buffer.next,\n append: buffer.length ? buffer[buffer.length - 1].item : void 0,\n count: bufferSize\n }, success);\n };\n\n const fetchPrevious = (datasource.get.length !== 2) ?\n (success) => datasource.get(buffer.first - bufferSize, bufferSize, success) :\n (success) => {\n datasource.get({\n index: buffer.first - bufferSize,\n prepend: buffer.length ? buffer[0].item : void 0,\n count: bufferSize\n }, success);\n };\n\n const initialize = () => {\n let tryCount = 0;\n if(!viewport.applyContainerStyle()) {\n const timer = $interval(() => {\n tryCount++;\n if(viewport.applyContainerStyle()) {\n $interval.cancel(timer);\n doAdjust();\n }\n if(tryCount * VIEWPORT_POLLING_INTERVAL >= MAX_VIEWPORT_DELAY) {\n $interval.cancel(timer);\n throw Error(`ui-scroll directive requires a viewport with non-zero height in ${MAX_VIEWPORT_DELAY}ms`);\n }\n }, VIEWPORT_POLLING_INTERVAL);\n }\n else {\n doAdjust();\n }\n };\n\n /**\n * Build padding elements\n *\n * Calling linker is the only way I found to get access to the tag name of the template\n * to prevent the directive scope from pollution a new scope is created and destroyed\n * right after the builder creation is completed\n */\n linker((clone, scope) => {\n viewport.createPaddingElements(clone[0]);\n // we do not include the clone in the DOM. It means that the nested directives will not\n // be able to reach the parent directives, but in this case it is intentional because we\n // created the clone to access the template tag name\n scope.$destroy();\n clone.remove();\n });\n\n $scope.$on('$destroy', () => {\n unbindEvents();\n viewport.unbind('mousewheel', wheelHandler);\n });\n\n viewport.bind('mousewheel', wheelHandler);\n\n initialize();\n\n /* Private function definitions */\n\n function isInvalid(rid) {\n return (rid && rid !== ridActual) || $scope.$$destroyed;\n }\n\n function bindEvents() {\n viewport.bind('resize', resizeAndScrollHandler);\n viewport.bind('scroll', resizeAndScrollHandler);\n }\n\n function unbindEvents() {\n viewport.unbind('resize', resizeAndScrollHandler);\n viewport.unbind('scroll', resizeAndScrollHandler);\n }\n\n function reload() {\n unbindEvents();\n viewport.resetTopPadding();\n viewport.resetBottomPadding();\n if (arguments.length) {\n startIndex = parseNumber(arguments[0], START_INDEX_DEFAULT, false);\n }\n buffer.reset(startIndex);\n persistDatasourceIndex(datasource, 'minIndex');\n persistDatasourceIndex(datasource, 'maxIndex');\n doAdjust();\n }\n\n function isElementVisible(wrapper) {\n return wrapper.element.height() && wrapper.element[0].offsetParent;\n }\n\n function visibilityWatcher(wrapper) {\n if (isElementVisible(wrapper)) {\n buffer.forEach((item) => {\n if (typeof item.unregisterVisibilityWatcher === 'function') {\n item.unregisterVisibilityWatcher();\n delete item.unregisterVisibilityWatcher;\n }\n });\n if (!pending.length) {\n $timeout(() => doAdjust());\n }\n }\n }\n\n function insertWrapperContent(wrapper, insertAfter) {\n createElement(wrapper, insertAfter, viewport.insertElement);\n if (!isElementVisible(wrapper)) {\n wrapper.unregisterVisibilityWatcher = wrapper.scope.$watch(() => visibilityWatcher(wrapper));\n }\n elementRoutines.hideElement(wrapper); // hide inserted elements before data binding\n }\n\n function createElement(wrapper, insertAfter, insertElement) {\n let promises = null;\n const sibling = (insertAfter > 0) ? buffer[insertAfter - 1].element : undefined;\n linker((clone, scope) => {\n promises = insertElement(clone, sibling);\n wrapper.element = clone;\n wrapper.scope = scope;\n scope[itemName] = wrapper.item;\n });\n // ui-scroll-grid apply\n if (adapter.transform) {\n const tdInitializer = wrapper.scope.uiScrollTdInitializer;\n if (tdInitializer && tdInitializer.linking) {\n adapter.transform(wrapper.scope, wrapper.element);\n } else {\n wrapper.scope.uiScrollTdInitializer = {\n onLink: () => adapter.transform(wrapper.scope, wrapper.element),\n scope: wrapper.scope\n };\n }\n }\n return promises;\n }\n\n function updateDOM() {\n let promises = [];\n const toBePrepended = [];\n const toBeRemoved = [];\n const inserted = [];\n\n buffer.forEach((wrapper, i) => {\n switch (wrapper.op) {\n case 'prepend':\n toBePrepended.unshift(wrapper);\n break;\n case 'append':\n insertWrapperContent(wrapper, i);\n wrapper.op = 'none';\n inserted.push(wrapper);\n break;\n case 'insert':\n promises = promises.concat(createElement(wrapper, i, viewport.insertElementAnimated));\n wrapper.op = 'none';\n inserted.push(wrapper);\n break;\n case 'remove':\n toBeRemoved.push(wrapper);\n }\n });\n\n toBeRemoved.forEach((wrapper) => promises = promises.concat(viewport.removeItem(wrapper)));\n\n if (toBePrepended.length)\n toBePrepended.forEach((wrapper) => {\n insertWrapperContent(wrapper);\n wrapper.op = 'none';\n });\n\n buffer.forEach((item, i) => item.scope.$index = buffer.first + i);\n\n return {\n prepended: toBePrepended,\n removed: toBeRemoved,\n inserted: inserted,\n animated: promises\n };\n\n }\n\n function updatePaddings(rid, updates) {\n // schedule another doAdjust after animation completion\n if (updates.animated.length) {\n $q.all(updates.animated).then(() => {\n viewport.adjustPaddings();\n doAdjust(rid);\n });\n } else {\n viewport.adjustPaddings();\n }\n }\n\n function enqueueFetch(rid, updates) {\n if (viewport.shouldLoadBottom()) {\n if (!updates || buffer.effectiveHeight(updates.inserted) > 0) {\n // this means that at least one item appended in the last batch has height > 0\n if (pending.push(true) === 1) {\n adapter.loading(true);\n fetch(rid);\n }\n }\n } else if (viewport.shouldLoadTop()) {\n if ((!updates || buffer.effectiveHeight(updates.prepended) > 0) || pending[0]) {\n // this means that at least one item appended in the last batch has height > 0\n // pending[0] = true means that previous fetch was appending. We need to force at least one prepend\n // BTW there will always be at least 1 element in the pending array because bottom is fetched first\n if (pending.push(false) === 1) {\n adapter.loading(true);\n fetch(rid);\n }\n }\n }\n }\n\n function processUpdates() {\n const updates = updateDOM();\n\n // We need the item bindings to be processed before we can do adjustments\n !$scope.$$phase && !$rootScope.$$phase && $scope.$digest();\n\n updates.inserted.forEach(w => elementRoutines.showElement(w));\n updates.prepended.forEach(w => elementRoutines.showElement(w));\n return updates;\n }\n\n function doAdjust(rid) {\n if (!rid) { // dismiss pending requests\n pending = [];\n rid = ++ridActual;\n }\n\n const updates = processUpdates();\n\n if (isInvalid(rid)) {\n return;\n }\n\n updatePaddings(rid, updates);\n enqueueFetch(rid);\n\n if (!pending.length) {\n adapter.calculateProperties();\n }\n }\n\n function doAdjustAfterFetch(rid) {\n const updates = processUpdates();\n\n viewport.onAfterPrepend(updates);\n\n if (isInvalid(rid)) {\n return;\n }\n\n updatePaddings(rid, updates);\n onRenderHandlersRunner();\n enqueueFetch(rid, updates);\n pending.shift();\n\n if (pending.length)\n fetch(rid);\n else {\n adapter.loading(false);\n bindEvents();\n adapter.calculateProperties();\n }\n }\n\n function fetch(rid) {\n if (pending[0]) {// scrolling down\n if (buffer.length && !viewport.shouldLoadBottom()) {\n doAdjustAfterFetch(rid);\n } else {\n fetchNext((result) => {\n if (isInvalid(rid)) {\n return;\n }\n\n if (result.length < bufferSize) {\n buffer.eof = true;\n }\n\n if (result.length > 0) {\n viewport.clipTop();\n buffer.append(result);\n }\n\n doAdjustAfterFetch(rid);\n });\n }\n } else { // scrolling up\n if (buffer.length && !viewport.shouldLoadTop()) {\n doAdjustAfterFetch(rid);\n } else {\n fetchPrevious((result) => {\n if (isInvalid(rid)) {\n return;\n }\n\n if (result.length < bufferSize) {\n buffer.bof = true;\n // log 'bof is reached'\n }\n\n if (result.length > 0) {\n if (buffer.length) {\n viewport.clipBottom();\n }\n buffer.prepend(result);\n }\n\n doAdjustAfterFetch(rid);\n });\n }\n }\n }\n\n function resizeAndScrollHandler() {\n if (!$rootScope.$$phase && !adapter.isLoading && !adapter.disabled) {\n\n enqueueFetch(ridActual);\n\n if (pending.length) {\n unbindEvents();\n } else {\n adapter.calculateProperties();\n !$scope.$$phase && $scope.$digest();\n }\n }\n }\n\n function wheelHandler(event) {\n if (!adapter.disabled) {\n const scrollTop = viewport[0].scrollTop;\n const yMax = viewport[0].scrollHeight - viewport[0].clientHeight;\n\n if ((scrollTop === 0 && !buffer.bof) || (scrollTop === yMax && !buffer.eof)) {\n event.preventDefault();\n }\n }\n }\n }\n\n }\n ]);\n"],"sourceRoot":""} \ No newline at end of file diff --git a/src/ui-scroll.js b/src/ui-scroll.js index c5ee58a6..09617bbd 100644 --- a/src/ui-scroll.js +++ b/src/ui-scroll.js @@ -241,6 +241,7 @@ angular.module('ui.scroll', []) } function reload() { + unbindEvents(); viewport.resetTopPadding(); viewport.resetBottomPadding(); if (arguments.length) { From dd3bdfc7a54f4cd658d98da44a97d765fbdcbcab Mon Sep 17 00:00:00 2001 From: Philippe Riand Date: Fri, 16 Aug 2019 17:04:34 -0400 Subject: [PATCH 16/18] Support for row-height --- .travis.yml | 23 +- demo/adapterSync/server.js | 322 +++---- demo/append/server.js | 172 ++-- demo/disabled/disabled.html | 86 +- demo/disabled/disabled.js | 36 +- demo/fixedRowHeight/fixedRowHeight.html | 64 ++ demo/fixedRowHeight/fixedRowHeight.js | 74 ++ demo/grid-dnd-widths/grid-dnd-widths.html | 108 +-- demo/grid-dnd-widths/grid-dnd-widths.js | 114 +-- demo/grid-dnd-widths/grid.css | 78 +- demo/index.html | 10 + demo/insideComponent/insideComponent.html | 64 +- demo/insideComponent/insideComponent.js | 90 +- demo/outOfBuffer/outOfBuffer.html | 96 +-- demo/outOfBuffer/outOfBuffer.js | 434 +++++----- demo/remote/remote.html | 66 +- demo/remote/remote.js | 136 +-- .../serviceDatasource.html | 41 + .../serviceDatasource.js | 19 + demo/userIndexes/userIndexes.html | 112 +-- demo/userIndexes/userIndexes.js | 82 +- dist/ui-scroll-grid.js | 2 +- dist/ui-scroll-jqlite.js | 22 +- dist/ui-scroll-jqlite.min.js | 22 +- dist/ui-scroll.js | 436 ++++++++-- dist/ui-scroll.js.map | 2 +- dist/ui-scroll.min.js | 2 +- dist/ui-scroll.min.js.map | 2 +- package-lock.json | 90 +- package.json | 1 + src/modules/adapter.js | 426 ++++----- src/modules/buffer.js | 339 ++++---- src/modules/elementRoutines.js | 162 ++-- src/modules/jqLiteExtras.js | 540 ++++++------ src/modules/padding.js | 174 ++-- src/modules/viewport.js | 507 ++++++----- src/ui-scroll-jqlite.js | 22 +- src/ui-scroll.js | 127 ++- test/PaddingsSpec.js | 808 +++++++++--------- test/config/karma.conf.files.js | 62 +- test/misc/scaffoldingGrid.js | 134 +-- test/misc/test.css | 10 +- 42 files changed, 3399 insertions(+), 2718 deletions(-) create mode 100644 demo/fixedRowHeight/fixedRowHeight.html create mode 100644 demo/fixedRowHeight/fixedRowHeight.js create mode 100644 demo/serviceDatasourceRowHeight/serviceDatasource.html create mode 100644 demo/serviceDatasourceRowHeight/serviceDatasource.js diff --git a/.travis.yml b/.travis.yml index f606527e..59a1fbd8 100644 --- a/.travis.yml +++ b/.travis.yml @@ -1,30 +1,17 @@ language: node_js node_js: -- "stable" - -install: -- npm install - -cache: - directories: - - "node_modules" +- '10.12.0' addons: firefox: latest -before_script: +before_install: - export DISPLAY=:99.0 - sh -e /etc/init.d/xvfb start -- sleep 3 + +before_script: +- npm install script: - npm run build - -deploy: - provider: pages - skip_cleanup: true - github_token: $github_token - local_dir: ./ - on: - branch: master diff --git a/demo/adapterSync/server.js b/demo/adapterSync/server.js index 2d2ce191..23bb6395 100644 --- a/demo/adapterSync/server.js +++ b/demo/adapterSync/server.js @@ -1,161 +1,161 @@ -angular.module('server', []).factory('Server', - ['$timeout', '$q', function ($timeout, $q) { - - var ServerFactory = { - - firstIndex: 1, - - lastIndex: 40, - - delay: 100, - - data: [], - - absIndex: 1, - - generateId: function () { - var d = '-'; - function S4() { - return (((1 + Math.random()) * 0x10000) | 0).toString(16).substring(1); - } - return (S4() + S4() + d + S4() + d + S4() + d + S4() + d + S4() + S4() + S4()); - }, - - generateItem: function (index) { - return { - index: index, - id: this.generateId(), - content: 'Item #' + this.absIndex++ - } - }, - - init: function () { - for (var i = this.firstIndex; i <= this.lastIndex; i++) { - this.data.push(this.generateItem(i)); - } - }, - - getItem: function (index) { - for (var i = this.data.length - 1; i >= 0; i--) { - if (this.data[i].index === index) { - return this.data[i]; - } - } - }, - - returnDeferredResult: function (result) { - var deferred = $q.defer(); - $timeout(function () { - deferred.resolve(result); - }, this.delay); - return deferred.promise; - }, - - request: function (index, count) { - var start = index; - var end = index + count - 1; - var item, result = { - items: [] - }; - if (start <= end) { - for (var i = start; i <= end; i++) { - if (item = this.getItem(i)) { - result.items.push(item); - } - } - } - return this.returnDeferredResult(result); - }, - - prependItem: function (params) { - var newItem = this.generateItem(--this.firstIndex); - newItem.content += params; - this.data.unshift(newItem); - return this.returnDeferredResult(newItem); - }, - - appendItem: function (params) { - var newItem = this.generateItem(++this.lastIndex); - newItem.content += params; - this.data.push(newItem); - return this.returnDeferredResult(newItem); - }, - - removeFirst: function () { - var firstItem = this.data.find(i => i.index === this.firstIndex); - if(!firstItem) { - return $q.reject(); - } - return this.removeItemById(firstItem.id); - }, - - removeLast: function () { - var lastItem = this.data.find(i => i.index === this.lastIndex); - if(!lastItem) { - return $q.reject(); - } - return this.removeItemById(lastItem.id); - }, - - removeItemById: function (itemId) { - var length = this.data.length; - for (var i = 0; i < length; i++) { - if (this.data[i].id === itemId) { - var indexRemoved = this.data[i].index; - if(indexRemoved > this.firstIndex) { - for (var j = i; j < length; j++) { - this.data[j].index--; - } - } - this.data.splice(i, 1); - this.setIndices(); - return this.returnDeferredResult(indexRemoved); - } - } - return this.returnDeferredResult(false); - }, - - insertAfterIndex: function (index, params) { - if(index < this.firstIndex || index > this.lastIndex) { - return this.returnDeferredResult(null); - } - var length = this.data.length, item; - for (var i = 0; i < length; i++) { - if (this.data[i].index === index) { - for (var j = i + 1; j < length; j++) { - this.data[j].index++; - } - item = this.generateItem(index + 1); - item.content += params; - this.data.splice(i + 1, 0, item); - this.setIndices(); - return this.returnDeferredResult(item); - } - } - return this.returnDeferredResult(null); - }, - - setIndices: function () { - if(!this.data.length) { - this.firstIndex = 1; - this.lastIndex = 1; - return; - } - this.firstIndex = this.data[0].index; - this.lastIndex = this.data[0].index; - for (var i = this.data.length - 1; i >= 0; i--) { - if(this.data[i].index > this.lastIndex) { - this.lastIndex = this.data[i].index; - } - if(this.data[i].index < this.firstIndex) { - this.firstIndex = this.data[i].index; - } - } - } - }; - - ServerFactory.init(); - - return ServerFactory; - } -]); +angular.module('server', []).factory('Server', + ['$timeout', '$q', function ($timeout, $q) { + + var ServerFactory = { + + firstIndex: 1, + + lastIndex: 40, + + delay: 100, + + data: [], + + absIndex: 1, + + generateId: function () { + var d = '-'; + function S4() { + return (((1 + Math.random()) * 0x10000) | 0).toString(16).substring(1); + } + return (S4() + S4() + d + S4() + d + S4() + d + S4() + d + S4() + S4() + S4()); + }, + + generateItem: function (index) { + return { + index: index, + id: this.generateId(), + content: 'Item #' + this.absIndex++ + } + }, + + init: function () { + for (var i = this.firstIndex; i <= this.lastIndex; i++) { + this.data.push(this.generateItem(i)); + } + }, + + getItem: function (index) { + for (var i = this.data.length - 1; i >= 0; i--) { + if (this.data[i].index === index) { + return this.data[i]; + } + } + }, + + returnDeferredResult: function (result) { + var deferred = $q.defer(); + $timeout(function () { + deferred.resolve(result); + }, this.delay); + return deferred.promise; + }, + + request: function (index, count) { + var start = index; + var end = index + count - 1; + var item, result = { + items: [] + }; + if (start <= end) { + for (var i = start; i <= end; i++) { + if (item = this.getItem(i)) { + result.items.push(item); + } + } + } + return this.returnDeferredResult(result); + }, + + prependItem: function (params) { + var newItem = this.generateItem(--this.firstIndex); + newItem.content += params; + this.data.unshift(newItem); + return this.returnDeferredResult(newItem); + }, + + appendItem: function (params) { + var newItem = this.generateItem(++this.lastIndex); + newItem.content += params; + this.data.push(newItem); + return this.returnDeferredResult(newItem); + }, + + removeFirst: function () { + var firstItem = this.data.find(i => i.index === this.firstIndex); + if(!firstItem) { + return $q.reject(); + } + return this.removeItemById(firstItem.id); + }, + + removeLast: function () { + var lastItem = this.data.find(i => i.index === this.lastIndex); + if(!lastItem) { + return $q.reject(); + } + return this.removeItemById(lastItem.id); + }, + + removeItemById: function (itemId) { + var length = this.data.length; + for (var i = 0; i < length; i++) { + if (this.data[i].id === itemId) { + var indexRemoved = this.data[i].index; + if(indexRemoved > this.firstIndex) { + for (var j = i; j < length; j++) { + this.data[j].index--; + } + } + this.data.splice(i, 1); + this.setIndices(); + return this.returnDeferredResult(indexRemoved); + } + } + return this.returnDeferredResult(false); + }, + + insertAfterIndex: function (index, params) { + if(index < this.firstIndex || index > this.lastIndex) { + return this.returnDeferredResult(null); + } + var length = this.data.length, item; + for (var i = 0; i < length; i++) { + if (this.data[i].index === index) { + for (var j = i + 1; j < length; j++) { + this.data[j].index++; + } + item = this.generateItem(index + 1); + item.content += params; + this.data.splice(i + 1, 0, item); + this.setIndices(); + return this.returnDeferredResult(item); + } + } + return this.returnDeferredResult(null); + }, + + setIndices: function () { + if(!this.data.length) { + this.firstIndex = 1; + this.lastIndex = 1; + return; + } + this.firstIndex = this.data[0].index; + this.lastIndex = this.data[0].index; + for (var i = this.data.length - 1; i >= 0; i--) { + if(this.data[i].index > this.lastIndex) { + this.lastIndex = this.data[i].index; + } + if(this.data[i].index < this.firstIndex) { + this.firstIndex = this.data[i].index; + } + } + } + }; + + ServerFactory.init(); + + return ServerFactory; + } +]); diff --git a/demo/append/server.js b/demo/append/server.js index 51a90a86..649171ad 100644 --- a/demo/append/server.js +++ b/demo/append/server.js @@ -1,86 +1,86 @@ -angular.module('server', []).factory('Server', - ['$timeout', '$q', function($timeout, $q) { - - var ServerFactory = { - - max: 50, - - first: 1, - - delay: 100, - - data: [], - - prependedData: [], - - appendedData: [], - - generateItem: function(number) { - return { - number: number, - content: 'Item #' + number - } - }, - - init: function() { - for (var i = this.first - 1; i <= this.max; i++) { - this.data.push(this.generateItem(i)); - } - }, - - getItem: function(index) { - if (index < this.first) { - return this.prependedData[(-1) * index]; - } else if (index > this.max) { - return this.appendedData[index - this.max - 1]; - } else { - return this.data[index]; - } - }, - - request: function(index, count) { - var self = this; - var deferred = $q.defer(); - - var start = index; - var end = index + count - 1; - - $timeout(function() { - var item, result = { - items: [] - }; - if (start <= end) { - for (var i = start; i <= end; i++) { - if (item = self.getItem(i)) { - result.items.push(item); - } - } - } - deferred.resolve(result); - }, self.delay); - - return deferred.promise; - }, - - prependItem: function(params) { - var prependedDataIndex = this.first - this.prependedData.length - 1; - var newItem = this.generateItem(prependedDataIndex); - newItem.content += params; - this.prependedData.push(newItem); - return newItem; - }, - - appendItem: function(params) { - var appendedDataIndex = this.max + this.appendedData.length + 1; - var newItem = this.generateItem(appendedDataIndex); - newItem.content += params; - this.appendedData.push(newItem); - return newItem; - } - }; - - ServerFactory.init(); - - return ServerFactory; - } -]); +angular.module('server', []).factory('Server', + ['$timeout', '$q', function($timeout, $q) { + + var ServerFactory = { + + max: 50, + + first: 1, + + delay: 100, + + data: [], + + prependedData: [], + + appendedData: [], + + generateItem: function(number) { + return { + number: number, + content: 'Item #' + number + } + }, + + init: function() { + for (var i = this.first - 1; i <= this.max; i++) { + this.data.push(this.generateItem(i)); + } + }, + + getItem: function(index) { + if (index < this.first) { + return this.prependedData[(-1) * index]; + } else if (index > this.max) { + return this.appendedData[index - this.max - 1]; + } else { + return this.data[index]; + } + }, + + request: function(index, count) { + var self = this; + var deferred = $q.defer(); + + var start = index; + var end = index + count - 1; + + $timeout(function() { + var item, result = { + items: [] + }; + if (start <= end) { + for (var i = start; i <= end; i++) { + if (item = self.getItem(i)) { + result.items.push(item); + } + } + } + deferred.resolve(result); + }, self.delay); + + return deferred.promise; + }, + + prependItem: function(params) { + var prependedDataIndex = this.first - this.prependedData.length - 1; + var newItem = this.generateItem(prependedDataIndex); + newItem.content += params; + this.prependedData.push(newItem); + return newItem; + }, + + appendItem: function(params) { + var appendedDataIndex = this.max + this.appendedData.length + 1; + var newItem = this.generateItem(appendedDataIndex); + newItem.content += params; + this.appendedData.push(newItem); + return newItem; + } + }; + + ServerFactory.init(); + + return ServerFactory; + } +]); diff --git a/demo/disabled/disabled.html b/demo/disabled/disabled.html index c9b4a3b4..2b41caa4 100644 --- a/demo/disabled/disabled.html +++ b/demo/disabled/disabled.html @@ -1,44 +1,44 @@ - - - - - Disabling - - - - - - - -
    - - browse other examples - -

    Disabled attribute

    - -
    - There is an property "disabled" on the ui-scroll adapter which allows to ignore user scroll/resize events: - -
    - 
    <div ui-scroll="item in datasource" adapter="myAdapter">{{item}}</div>
    -
    - Here we have two-way binding, so just set the property in appropriate time: -
    - 
    $scope.myAdapter.disabled = true;
    -
    - Since "disabled" is true no user scroll is being processed by ui-scroll engine. - -
    - -
    - User scroll processing is {{myAdapter.disabled ? "disabled" : "enabled"}} now
    - -
    - -
    -
    {{item}}
    -
    - -
    - + + + + + Disabling + + + + + + + +
    + + browse other examples + +

    Disabled attribute

    + +
    + There is an property "disabled" on the ui-scroll adapter which allows to ignore user scroll/resize events: + +
    + 
    <div ui-scroll="item in datasource" adapter="myAdapter">{{item}}</div>
    +
    + Here we have two-way binding, so just set the property in appropriate time: +
    + 
    $scope.myAdapter.disabled = true;
    +
    + Since "disabled" is true no user scroll is being processed by ui-scroll engine. + +
    + +
    + User scroll processing is {{myAdapter.disabled ? "disabled" : "enabled"}} now
    + +
    + +
    +
    {{item}}
    +
    + +
    + \ No newline at end of file diff --git a/demo/disabled/disabled.js b/demo/disabled/disabled.js index 30219f1a..7c873bc8 100644 --- a/demo/disabled/disabled.js +++ b/demo/disabled/disabled.js @@ -1,18 +1,18 @@ -angular.module('application', ['ui.scroll']) - .controller('mainController', [ - '$scope', '$log', '$timeout', function ($scope, console, $timeout) { - var datasource = {}; - - datasource.get = function (index, count, success) { - $timeout(function () { - var result = []; - for (var i = index; i <= index + count - 1; i++) { - result.push("item #" + i); - } - success(result); - }, 100); - }; - - $scope.datasource = datasource; - } - ]); +angular.module('application', ['ui.scroll']) + .controller('mainController', [ + '$scope', '$log', '$timeout', function ($scope, console, $timeout) { + var datasource = {}; + + datasource.get = function (index, count, success) { + $timeout(function () { + var result = []; + for (var i = index; i <= index + count - 1; i++) { + result.push("item #" + i); + } + success(result); + }, 100); + }; + + $scope.datasource = datasource; + } + ]); diff --git a/demo/fixedRowHeight/fixedRowHeight.html b/demo/fixedRowHeight/fixedRowHeight.html new file mode 100644 index 00000000..827cc167 --- /dev/null +++ b/demo/fixedRowHeight/fixedRowHeight.html @@ -0,0 +1,64 @@ + + + + + + Fixed Row Height + + + + + + + + +
    + + browse other examples + +

    Fixed Row Height

    + +
    +

    + If the height of all the viewport rows is known and not going to be changed, + it might be passed as "row-height" attribute. + This reduces inner calculations and browser reflows, + which leads to a performance increase. +

    +
    + +
    + performance decrease coefficient (0 - fastest) +
    + +
    +
    +
    + + {{item.text}} + + + + {{getSum(item)}} + {{getMul(item)}} + {{getText(item)}} + + +
    + {{item.text}} + + + + {{getSum(item)}} + {{getMul(item)}} + {{getText(item)}} +
    +     + +
    +
    +
    + + + + \ No newline at end of file diff --git a/demo/fixedRowHeight/fixedRowHeight.js b/demo/fixedRowHeight/fixedRowHeight.js new file mode 100644 index 00000000..93185574 --- /dev/null +++ b/demo/fixedRowHeight/fixedRowHeight.js @@ -0,0 +1,74 @@ +angular.module('application', ['ui.scroll']) + + .controller('MainCtrl', ($scope) => { + $scope.hello = 'Hello Main Controller!'; + + let min = -150, max = 200, delay = 0, inputs = 10; + + const getInput = index => { + const result = []; + for (let i = 0; i < inputs; i++) { + result.push({ value: ((index % 2 === 0 ? -1 : 1) * (i + 1)).toString() }); + } + return result; + } + + const data = []; + for (let i = min; i <= max; i++) { + height = 50 + (i + 1); + data.push({ + index: i, + text: 'item #' + i, + input: getInput(i) + }); + } + + $scope.datasource = { + get: (index, count, success) => { + console.log('Getting ' + count + ' items started from ' + index + '...'); + setTimeout(() => { + const result = []; + const start = Math.max(min, index); + const end = Math.min(index + count - 1, max); + if (start <= end) { + for (let i = start; i <= end; i++) { + const _item = data.find(item => item.index === i); + if (_item) { + result.push(_item); + } + } + } + console.log('Got ' + result.length + ' items [' + start + '..' + end + ']'); + success(result); + }, delay); + } + }; + + $scope.getSum = item => + item.input.reduce((a, i) => a + Number(i.value), 0); + + $scope.getMul = item => + item.input.reduce((a, i) => a * Number(i.value), 1); + + $scope.getText = item => { + const num = $scope.getMul(item).toString(); + const result = []; + for (let i = 0; i < item.text.length; i++) { + result.push(item.text[i]); + result.push(i < num.length ? num[i] : 'x'); + } + return result.join(''); + } + + const perfSlowCountDefault = 2; + $scope.perfSlowCount = perfSlowCountDefault; + $scope.perfSlowCountList = []; + $scope.$watch('perfSlowCount', () => { + let size = Number($scope.perfSlowCount); + if (isNaN(size)) { + size = perfSlowCountDefault; + } + $scope.perfSlowCountList = (new Array(size)).fill(0); + }) + + }); diff --git a/demo/grid-dnd-widths/grid-dnd-widths.html b/demo/grid-dnd-widths/grid-dnd-widths.html index 06f05182..678a0bb1 100644 --- a/demo/grid-dnd-widths/grid-dnd-widths.html +++ b/demo/grid-dnd-widths/grid-dnd-widths.html @@ -1,55 +1,55 @@ - - - - - Grid dnd widths - - - - - - - - -
    - - browse other examples - -

    Grid drag and drop widths

    - -
    - To manipulate grid columns widths .css method on gridAdapter column is available: -
    - 
    -$scope.adapter.gridAdapter.columns[0].css('width', '200px');
    -
    - You also can set any css property this way. -
    - - - - - - - - - - - - - - -
    - num - - text
    {{item.col1}}{{item.col2}}
    - -
    - + + + + + Grid dnd widths + + + + + + + + +
    + + browse other examples + +

    Grid drag and drop widths

    + +
    + To manipulate grid columns widths .css method on gridAdapter column is available: +
    + 
    +$scope.adapter.gridAdapter.columns[0].css('width', '200px');
    +
    + You also can set any css property this way. +
    + + + + + + + + + + + + + + +
    + num + + text
    {{item.col1}}{{item.col2}}
    + +
    + \ No newline at end of file diff --git a/demo/grid-dnd-widths/grid-dnd-widths.js b/demo/grid-dnd-widths/grid-dnd-widths.js index 9404aeca..629bcd84 100644 --- a/demo/grid-dnd-widths/grid-dnd-widths.js +++ b/demo/grid-dnd-widths/grid-dnd-widths.js @@ -1,57 +1,57 @@ -angular.module('application', ['ui.scroll', 'ui.scroll.grid']) - .controller('gridController', [ - '$scope', '$log', '$timeout', function ($scope, console, $timeout) { - var datasource = {}; - - datasource.get = function (index, count, success) { - $timeout(function () { - var result = []; - for (var i = index; i <= index + count - 1; i++) { - result.push({ - col1: i, - col2: 'item #' + i - }); - } - success(result); - }, 100); - }; - - $scope.datasource = datasource; - - var splitter = angular.element(document.getElementById('splitter')); - var startX = 0; - var right = 0; - var startDrag = false; - - $scope.dragStart = function (evt) { - if(startDrag) { - return false; - } - splitter.addClass('active'); - startDrag = true; - startX = right + evt.clientX; - }; - - $scope.dragOver = function (evt) { - if(!startDrag) { - return false; - } - - right = startX - evt.clientX; - $scope.adapter.gridAdapter.columns[1].css('width', (200 + right) + 'px'); - $scope.adapter.gridAdapter.columns[0].css('width', (80 - right) + 'px'); - splitter.css('right', '0'); - - return false; - }; - - $scope.dragDrop = function (evt) { - startDrag = false; - splitter.removeClass('active'); - } - - - } - ]); - - +angular.module('application', ['ui.scroll', 'ui.scroll.grid']) + .controller('gridController', [ + '$scope', '$log', '$timeout', function ($scope, console, $timeout) { + var datasource = {}; + + datasource.get = function (index, count, success) { + $timeout(function () { + var result = []; + for (var i = index; i <= index + count - 1; i++) { + result.push({ + col1: i, + col2: 'item #' + i + }); + } + success(result); + }, 100); + }; + + $scope.datasource = datasource; + + var splitter = angular.element(document.getElementById('splitter')); + var startX = 0; + var right = 0; + var startDrag = false; + + $scope.dragStart = function (evt) { + if(startDrag) { + return false; + } + splitter.addClass('active'); + startDrag = true; + startX = right + evt.clientX; + }; + + $scope.dragOver = function (evt) { + if(!startDrag) { + return false; + } + + right = startX - evt.clientX; + $scope.adapter.gridAdapter.columns[1].css('width', (200 + right) + 'px'); + $scope.adapter.gridAdapter.columns[0].css('width', (80 - right) + 'px'); + splitter.css('right', '0'); + + return false; + }; + + $scope.dragDrop = function (evt) { + startDrag = false; + splitter.removeClass('active'); + } + + + } + ]); + + diff --git a/demo/grid-dnd-widths/grid.css b/demo/grid-dnd-widths/grid.css index 1fe6cc7b..f5d16e11 100644 --- a/demo/grid-dnd-widths/grid.css +++ b/demo/grid-dnd-widths/grid.css @@ -1,40 +1,40 @@ -.grid { - height: 300px; -} - -.grid tbody { - width: 300px; - } - -.col1 { - width: 80px; -} - -td.col1 { - font-style: italic; -} - -.col2 { - width: 200px; -} - -.splitter{ - cursor: e-resize; - float: right; - border: 2px solid black; - height: 20px; - position: relative; - right: 0; -} - -td, th { - border: 0 dashed #999; - border-left-width: 1px; -} -th { - border-bottom-width: 1px; -} - -.active { - border: 2px solid red; +.grid { + height: 300px; +} + +.grid tbody { + width: 300px; + } + +.col1 { + width: 80px; +} + +td.col1 { + font-style: italic; +} + +.col2 { + width: 200px; +} + +.splitter{ + cursor: e-resize; + float: right; + border: 2px solid black; + height: 20px; + position: relative; + right: 0; +} + +td, th { + border: 0 dashed #999; + border-left-width: 1px; +} +th { + border-bottom-width: 1px; +} + +.active { + border: 2px solid red; } \ No newline at end of file diff --git a/demo/index.html b/demo/index.html index d2c32b7c..7db6cb35 100644 --- a/demo/index.html +++ b/demo/index.html @@ -16,6 +16,11 @@

    Scroller Examples

    Datasource as service +
  • + + Datasource as service with a fixed rowHeight + +
  • Datasource on scope (not as service) @@ -64,6 +69,11 @@

    Scroller Examples

    Bottom visible (Adapter)
    • +
  • + + Fixed row height (higher perfromance) + +
  • Reload datasource to specified index diff --git a/demo/insideComponent/insideComponent.html b/demo/insideComponent/insideComponent.html index 01dc6c92..37cdebf4 100644 --- a/demo/insideComponent/insideComponent.html +++ b/demo/insideComponent/insideComponent.html @@ -1,32 +1,32 @@ - - - - - Inside Angular 1.5+ component - - - - - - - -
    - - browse other examples - -

    Scroller inside Angular 1.5+ Component

    - -
    - This sample demonstrates encapsulation of the ui-scroll directive inside some custom component (Angular 1.5+). - - To demonstrate the work of the Adapter, click on any row. The text of the item should change after click. - - The controller of this Component is implemented as ES6 class. Note that this demo might not work in old browsers which don't support ES6 classes. -
    - - - -
    - - - + + + + + Inside Angular 1.5+ component + + + + + + + +
    + + browse other examples + +

    Scroller inside Angular 1.5+ Component

    + +
    + This sample demonstrates encapsulation of the ui-scroll directive inside some custom component (Angular 1.5+). + + To demonstrate the work of the Adapter, click on any row. The text of the item should change after click. + + The controller of this Component is implemented as ES6 class. Note that this demo might not work in old browsers which don't support ES6 classes. +
    + + + +
    + + + diff --git a/demo/insideComponent/insideComponent.js b/demo/insideComponent/insideComponent.js index 24c7ce6b..41a59005 100644 --- a/demo/insideComponent/insideComponent.js +++ b/demo/insideComponent/insideComponent.js @@ -1,45 +1,45 @@ -(function (angular) { - - class Ctrl { - constructor($timeout, $scope) { - this.timeout = $timeout; - this.show = true; - this.$scope = $scope; - } - - get(index, count, success) { - this.timeout(function () { - var result = []; - for (var i = index; i <= index + count - 1; i++) { - result.push({ - id: i, - name: "item #" + i - }); - } - success(result); - }, 100); - } - - update(id) { - return this.scrollAdapter.applyUpdates(function (item) { - if (item.id === id) { - item.name += " *"; - } - }); - } - } - - angular - .module('application', ['ui.scroll']) - .component('myComponent', { - controllerAs: 'ctrl', - template: - '
    ' + - '
    ' + - '
    {{item.name}}
    ' + - '
    ' + - '
    ', - controller: Ctrl - }); - -})(angular); +(function (angular) { + + class Ctrl { + constructor($timeout, $scope) { + this.timeout = $timeout; + this.show = true; + this.$scope = $scope; + } + + get(index, count, success) { + this.timeout(function () { + var result = []; + for (var i = index; i <= index + count - 1; i++) { + result.push({ + id: i, + name: "item #" + i + }); + } + success(result); + }, 100); + } + + update(id) { + return this.scrollAdapter.applyUpdates(function (item) { + if (item.id === id) { + item.name += " *"; + } + }); + } + } + + angular + .module('application', ['ui.scroll']) + .component('myComponent', { + controllerAs: 'ctrl', + template: + '
    ' + + '
    ' + + '
    {{item.name}}
    ' + + '
    ' + + '
    ', + controller: Ctrl + }); + +})(angular); diff --git a/demo/outOfBuffer/outOfBuffer.html b/demo/outOfBuffer/outOfBuffer.html index 3c639946..4fe1f3bf 100644 --- a/demo/outOfBuffer/outOfBuffer.html +++ b/demo/outOfBuffer/outOfBuffer.html @@ -1,49 +1,49 @@ - - - - - Adapter sync - - - - - - - - -
    - -
    - - - - - -
    - -
    - -
      -
    • -
      - {{$index}}: {{item.content}} ({{item.id}}) - [x] -
      -
      • -
    - -
    - + + + + + Adapter sync + + + + + + + + +
    + +
    + + + + + +
    + +
    + +
      +
    • +
      + {{$index}}: {{item.content}} ({{item.id}}) + [x] +
      +
      • +
    + +
    + \ No newline at end of file diff --git a/demo/outOfBuffer/outOfBuffer.js b/demo/outOfBuffer/outOfBuffer.js index bc932b22..0b946a01 100644 --- a/demo/outOfBuffer/outOfBuffer.js +++ b/demo/outOfBuffer/outOfBuffer.js @@ -1,217 +1,217 @@ -var app = angular.module('application', ['ui.scroll']); - -app.factory('Server', [ - '$timeout', '$q', function ($timeout, $q) { - - var ServerFactory = { - - firstIndex: 1, - - lastIndex: 40, - - delay: 100, - - data: [], - - absIndex: 1, - - generateId: function () { - var d = '-'; - function S4() { - return (((1 + Math.random()) * 0x10000) | 0).toString(16).substring(1); - } - return (S4() + S4() + d + S4() + d + S4() + d + S4() + d + S4() + S4() + S4()); - }, - - generateItem: function (index) { - return { - index: index, - id: this.generateId(), - content: 'Item #' + this.absIndex++ - } - }, - - init: function () { - for (var i = this.firstIndex; i <= this.lastIndex; i++) { - this.data.push(this.generateItem(i)); - } - }, - - getItem: function (index) { - for (var i = this.data.length - 1; i >= 0; i--) { - if (this.data[i].index === index) { - return this.data[i]; - } - } - }, - - returnDeferredResult: function (result) { - var deferred = $q.defer(); - $timeout(function () { - deferred.resolve(result); - }, this.delay); - return deferred.promise; - }, - - request: function (index, count) { - var start = index; - var end = index + count - 1; - var item, result = { - items: [] - }; - if (start <= end) { - for (var i = start; i <= end; i++) { - if (item = this.getItem(i)) { - result.items.push(item); - } - } - } - return this.returnDeferredResult(result); - }, - - prependItem: function (params) { - var newItem = this.generateItem(--this.firstIndex); - newItem.content += params; - this.data.unshift(newItem); - return this.returnDeferredResult(newItem); - }, - - appendItem: function (params) { - var newItem = this.generateItem(++this.lastIndex); - newItem.content += params; - this.data.push(newItem); - return this.returnDeferredResult(newItem); - }, - - removeFirst: function () { - var firstItem = this.data.find(i => i.index === this.firstIndex); - if(!firstItem) { - return; - } - return this.removeItemById(firstItem.id); - }, - - removeLast: function () { - var lastItem = this.data.find(i => i.index === this.lastIndex); - if(!lastItem) { - return; - } - return this.removeItemById(lastItem.id); - }, - - removeItemById: function (itemId) { - var length = this.data.length; - for (var i = 0; i < length; i++) { - if (this.data[i].id === itemId) { - var indexRemoved = this.data[i].index; - this.data.splice(i, 1); - this.setIndices(); - return this.returnDeferredResult(indexRemoved); - } - } - return this.returnDeferredResult(false); - }, - - setIndices: function() { - if(!this.data.length) { - this.firstIndex = 1; - this.lastIndex = 1; - return; - } - this.firstIndex = this.data[0].index; - this.lastIndex = this.data[0].index; - for (var i = this.data.length - 1; i >= 0; i--) { - if(this.data[i].index > this.lastIndex) { - this.lastIndex = this.data[i].index; - } - if(this.data[i].index < this.firstIndex) { - this.firstIndex = this.data[i].index; - } - } - } - }; - - ServerFactory.init(); - - return ServerFactory; - - } -]); - - -app.controller('mainController', [ - '$scope', 'Server', function ($scope, Server) { - - var ctrl = this; - - ctrl.datasource = { - get: function (index, count, success) { - console.log('request by index = ' + index + ', count = ' + count); - Server.request(index, count).then(function (result) { - if (result.items) { - console.log('resolved ' + result.items.length + ' items'); - } - success(result.items); - }); - } - }; - - $scope.$watch('adapter', (prev, next) => { - console.log('The adapter has been initialized'); - }); - - ctrl.prepend = function () { - Server.prependItem(' ***').then(function (newItem) { - if (ctrl.adapter.isBOF()) { - ctrl.adapter.prepend([newItem]); - } - }); - }; - - ctrl.append = function () { - Server.appendItem(' ***').then(function (newItem) { - if (ctrl.adapter.isEOF()) { - ctrl.adapter.append([newItem]); - } - }); - }; - - // todo dhilt : need to implement it properly - ctrl.removeAll = function () { - ctrl.adapter.applyUpdates(function (item) { - if (item.id) { - Server.removeItemById(item.id); - return []; - } - }); - }; - - ctrl.remove = function (itemRemove) { - Server.removeItemById(itemRemove.id).then(function (result) { - if (result !== false) { - ctrl.adapter.applyUpdates(function (item) { - if (item.id === itemRemove.id) { - return []; - } - }); - } - }); - }; - - ctrl.removeFirst = function () { - Server.removeFirst().then(function (indexRemoved) { - if (indexRemoved !== false) { - ctrl.adapter.applyUpdates(indexRemoved, []); - } - }); - }; - - ctrl.removeLast = function () { - Server.removeLast().then(function (indexRemoved) { - if (indexRemoved !== false) { - ctrl.adapter.applyUpdates(indexRemoved, []); - } - }); - }; - } -]); +var app = angular.module('application', ['ui.scroll']); + +app.factory('Server', [ + '$timeout', '$q', function ($timeout, $q) { + + var ServerFactory = { + + firstIndex: 1, + + lastIndex: 40, + + delay: 100, + + data: [], + + absIndex: 1, + + generateId: function () { + var d = '-'; + function S4() { + return (((1 + Math.random()) * 0x10000) | 0).toString(16).substring(1); + } + return (S4() + S4() + d + S4() + d + S4() + d + S4() + d + S4() + S4() + S4()); + }, + + generateItem: function (index) { + return { + index: index, + id: this.generateId(), + content: 'Item #' + this.absIndex++ + } + }, + + init: function () { + for (var i = this.firstIndex; i <= this.lastIndex; i++) { + this.data.push(this.generateItem(i)); + } + }, + + getItem: function (index) { + for (var i = this.data.length - 1; i >= 0; i--) { + if (this.data[i].index === index) { + return this.data[i]; + } + } + }, + + returnDeferredResult: function (result) { + var deferred = $q.defer(); + $timeout(function () { + deferred.resolve(result); + }, this.delay); + return deferred.promise; + }, + + request: function (index, count) { + var start = index; + var end = index + count - 1; + var item, result = { + items: [] + }; + if (start <= end) { + for (var i = start; i <= end; i++) { + if (item = this.getItem(i)) { + result.items.push(item); + } + } + } + return this.returnDeferredResult(result); + }, + + prependItem: function (params) { + var newItem = this.generateItem(--this.firstIndex); + newItem.content += params; + this.data.unshift(newItem); + return this.returnDeferredResult(newItem); + }, + + appendItem: function (params) { + var newItem = this.generateItem(++this.lastIndex); + newItem.content += params; + this.data.push(newItem); + return this.returnDeferredResult(newItem); + }, + + removeFirst: function () { + var firstItem = this.data.find(i => i.index === this.firstIndex); + if(!firstItem) { + return; + } + return this.removeItemById(firstItem.id); + }, + + removeLast: function () { + var lastItem = this.data.find(i => i.index === this.lastIndex); + if(!lastItem) { + return; + } + return this.removeItemById(lastItem.id); + }, + + removeItemById: function (itemId) { + var length = this.data.length; + for (var i = 0; i < length; i++) { + if (this.data[i].id === itemId) { + var indexRemoved = this.data[i].index; + this.data.splice(i, 1); + this.setIndices(); + return this.returnDeferredResult(indexRemoved); + } + } + return this.returnDeferredResult(false); + }, + + setIndices: function() { + if(!this.data.length) { + this.firstIndex = 1; + this.lastIndex = 1; + return; + } + this.firstIndex = this.data[0].index; + this.lastIndex = this.data[0].index; + for (var i = this.data.length - 1; i >= 0; i--) { + if(this.data[i].index > this.lastIndex) { + this.lastIndex = this.data[i].index; + } + if(this.data[i].index < this.firstIndex) { + this.firstIndex = this.data[i].index; + } + } + } + }; + + ServerFactory.init(); + + return ServerFactory; + + } +]); + + +app.controller('mainController', [ + '$scope', 'Server', function ($scope, Server) { + + var ctrl = this; + + ctrl.datasource = { + get: function (index, count, success) { + console.log('request by index = ' + index + ', count = ' + count); + Server.request(index, count).then(function (result) { + if (result.items) { + console.log('resolved ' + result.items.length + ' items'); + } + success(result.items); + }); + } + }; + + $scope.$watch('adapter', (prev, next) => { + console.log('The adapter has been initialized'); + }); + + ctrl.prepend = function () { + Server.prependItem(' ***').then(function (newItem) { + if (ctrl.adapter.isBOF()) { + ctrl.adapter.prepend([newItem]); + } + }); + }; + + ctrl.append = function () { + Server.appendItem(' ***').then(function (newItem) { + if (ctrl.adapter.isEOF()) { + ctrl.adapter.append([newItem]); + } + }); + }; + + // todo dhilt : need to implement it properly + ctrl.removeAll = function () { + ctrl.adapter.applyUpdates(function (item) { + if (item.id) { + Server.removeItemById(item.id); + return []; + } + }); + }; + + ctrl.remove = function (itemRemove) { + Server.removeItemById(itemRemove.id).then(function (result) { + if (result !== false) { + ctrl.adapter.applyUpdates(function (item) { + if (item.id === itemRemove.id) { + return []; + } + }); + } + }); + }; + + ctrl.removeFirst = function () { + Server.removeFirst().then(function (indexRemoved) { + if (indexRemoved !== false) { + ctrl.adapter.applyUpdates(indexRemoved, []); + } + }); + }; + + ctrl.removeLast = function () { + Server.removeLast().then(function (indexRemoved) { + if (indexRemoved !== false) { + ctrl.adapter.applyUpdates(indexRemoved, []); + } + }); + }; + } +]); diff --git a/demo/remote/remote.html b/demo/remote/remote.html index d589fb11..2b3f0079 100644 --- a/demo/remote/remote.html +++ b/demo/remote/remote.html @@ -1,34 +1,34 @@ - - - - - - Remote server emulation - - - - - - - -
    - browse other examples -

    Remote server emulation

    -
    - This demo implements Remote server emulation factory, so the datasource get method looks like -
    - 
    -datasource.get = function(index, count, success) {
-  Server.request(index, count).then(success);
-};
    -
    -
    -
    -
    - {{item.content}} -
    -
    -
    - - + + + + + + Remote server emulation + + + + + + + +
    + browse other examples +

    Remote server emulation

    +
    + This demo implements Remote server emulation factory, so the datasource get method looks like +
    + 
    +datasource.get = function(index, count, success) {
+  Server.request(index, count).then(success);
+};
    +
    +
    +
    +
    + {{item.content}} +
    +
    +
    + + \ No newline at end of file diff --git a/demo/remote/remote.js b/demo/remote/remote.js index acf218c1..5114b0c2 100644 --- a/demo/remote/remote.js +++ b/demo/remote/remote.js @@ -1,69 +1,69 @@ -angular.module('application', ['ui.scroll']) - - .factory('Server', function($timeout, $q) { - return { - - default: { - first: 0, - max: 99, - delay: 100 - }, - - data: [], - - init: function(settings = {}) { - this.first = settings.hasOwnProperty('first') ? settings.first : this.default.first; - this.max = settings.hasOwnProperty('max') ? settings.max : this.default.max; - this.delay = settings.hasOwnProperty('delay') ? settings.delay : this.default.delay; - for (var i = this.first; i <= this.max; i++) { - this.data[i] = { - index: i, - content: 'Item #' + i - }; - } - }, - - request: function(index, count) { - var self = this; - var deferred = $q.defer(); - - var start = index; - var end = index + count - 1; - - $timeout(function() { - var item, result = []; - if (start <= end) { - for (var i = start; i <= end; i++) { - if (item = self.data[i]) { - result.push(item); - } - } - } - deferred.resolve(result); - }, self.delay); - - return deferred.promise; - } - }; - }) - - .controller('mainController', function($scope, Server) { - - $scope.firstIndex = 1; - - Server.init({ - first: $scope.firstIndex, - max: 100, - delay: 40 - }); - - $scope.datasource = { - get: function(index, count, success) { - console.log('requested index = ' + index + ', count = ' + count); - Server.request(index, count).then(function(result) { - console.log('resolved ' + result.length + ' items'); - success(result); - }); - } - }; +angular.module('application', ['ui.scroll']) + + .factory('Server', function($timeout, $q) { + return { + + default: { + first: 0, + max: 99, + delay: 100 + }, + + data: [], + + init: function(settings = {}) { + this.first = settings.hasOwnProperty('first') ? settings.first : this.default.first; + this.max = settings.hasOwnProperty('max') ? settings.max : this.default.max; + this.delay = settings.hasOwnProperty('delay') ? settings.delay : this.default.delay; + for (var i = this.first; i <= this.max; i++) { + this.data[i] = { + index: i, + content: 'Item #' + i + }; + } + }, + + request: function(index, count) { + var self = this; + var deferred = $q.defer(); + + var start = index; + var end = index + count - 1; + + $timeout(function() { + var item, result = []; + if (start <= end) { + for (var i = start; i <= end; i++) { + if (item = self.data[i]) { + result.push(item); + } + } + } + deferred.resolve(result); + }, self.delay); + + return deferred.promise; + } + }; + }) + + .controller('mainController', function($scope, Server) { + + $scope.firstIndex = 1; + + Server.init({ + first: $scope.firstIndex, + max: 100, + delay: 40 + }); + + $scope.datasource = { + get: function(index, count, success) { + console.log('requested index = ' + index + ', count = ' + count); + Server.request(index, count).then(function(result) { + console.log('resolved ' + result.length + ' items'); + success(result); + }); + } + }; }); \ No newline at end of file diff --git a/demo/serviceDatasourceRowHeight/serviceDatasource.html b/demo/serviceDatasourceRowHeight/serviceDatasource.html new file mode 100644 index 00000000..e7cab253 --- /dev/null +++ b/demo/serviceDatasourceRowHeight/serviceDatasource.html @@ -0,0 +1,41 @@ + + + + + Datasource as service + + + + + + + +
    + + browse other examples + +

    Datasource as service with fixed row height

    + +
    +

    This sample shows the optimizations provided by a fixed row height, in particular when scrolling + fast through a large list of items as it uses the scrollTo() method for a direct jump.

    + +

    To see the optimization in action, scroll down to item #500, and then scroll back to top using the scrollbar + or by pressing 'Home' or 'cmd+ArrowUp' on your keyboard.

    + + The page is identical to the standard Datasource as service + demo, with the fixed row-height attribute set for the directive: +
    + 
    <li ui-scroll="item in datasource" row-height="26">{{item}}</li>
    +
    + +
    + +
    +
    {{item}}
    +
    + +
    + + + \ No newline at end of file diff --git a/demo/serviceDatasourceRowHeight/serviceDatasource.js b/demo/serviceDatasourceRowHeight/serviceDatasource.js new file mode 100644 index 00000000..b8eab711 --- /dev/null +++ b/demo/serviceDatasourceRowHeight/serviceDatasource.js @@ -0,0 +1,19 @@ +angular.module('application', ['ui.scroll']) + .factory('datasource', ['$log', '$timeout', + function (console, $timeout) { + + var get = function (index, count, success) { + $timeout(function () { + var result = []; + for (var i = index; i <= index + count - 1; i++) { + result.push("item #" + i); + } + success(result); + }, 100); + }; + + return { + get: get + }; + } + ]); diff --git a/demo/userIndexes/userIndexes.html b/demo/userIndexes/userIndexes.html index f6dcdfdc..0d62dfcf 100644 --- a/demo/userIndexes/userIndexes.html +++ b/demo/userIndexes/userIndexes.html @@ -1,57 +1,57 @@ - - - - - User min and max indexes - - - - - - - - -
    - - browse other examples - -

    Set user min and max indexes

    - -
    - Here we provide an ability of external min and max indexes setting to let the viewport know how many items do we have. -
    - 
    <li ui-scroll="item in datasource">{{item}}</li>
    -
    - Then you can play with minIndex and maxIndex properties which are being accessible on your datasource after the ui-scroll directive is linked: -
    - 
    -datasource.minIndex = -100;
-datasource.maxIndex = 100;
    -
    - Such setting does not not lead to data fetching but the scroll bar params do match datasource size defined this way. -
    - -
    - - minIndex value to set -
    - - maxIndex value to set -
    - -
    - -
    -
    {{item}}
    -
    - -
    - - + + + + + User min and max indexes + + + + + + + + +
    + + browse other examples + +

    Set user min and max indexes

    + +
    + Here we provide an ability of external min and max indexes setting to let the viewport know how many items do we have. +
    + 
    <li ui-scroll="item in datasource">{{item}}</li>
    +
    + Then you can play with minIndex and maxIndex properties which are being accessible on your datasource after the ui-scroll directive is linked: +
    + 
    +datasource.minIndex = -100;
+datasource.maxIndex = 100;
    +
    + Such setting does not not lead to data fetching but the scroll bar params do match datasource size defined this way. +
    + +
    + + minIndex value to set +
    + + maxIndex value to set +
    + +
    + +
    +
    {{item}}
    +
    + +
    + + \ No newline at end of file diff --git a/demo/userIndexes/userIndexes.js b/demo/userIndexes/userIndexes.js index 7a1e5720..93f35c68 100644 --- a/demo/userIndexes/userIndexes.js +++ b/demo/userIndexes/userIndexes.js @@ -1,42 +1,42 @@ -angular.module('application', ['ui.scroll']) - .controller('mainController', [ - '$scope', '$log', '$timeout', function ($scope, console, $timeout) { - var datasource = {}; - - datasource.get = function (index, count, success) { - $timeout(function () { - var result = []; - for (var i = index; i <= index + count - 1; i++) { - result.push("item #" + i); - } - success(result); - }, 100); - }; - - $scope.datasource = datasource; - $scope.adapter = {}; - - $scope.setUserMinIndex = function () { - var userMinIndex = parseInt($scope.userMinIndex, 10); - if(!isNaN(userMinIndex)) - $scope.datasource.minIndex = userMinIndex; - }; - - $scope.setUserMaxIndex = function () { - var userMaxIndex = parseInt($scope.userMaxIndex, 10); - if(!isNaN(userMaxIndex)) - $scope.datasource.maxIndex = userMaxIndex; - }; - - $scope.setUserIndexes = function () { - $scope.setUserMinIndex(); - $scope.setUserMaxIndex(); - }; - - $scope.delay = false; - $timeout(function() { - $scope.delay = true; - }, 500); - - } +angular.module('application', ['ui.scroll']) + .controller('mainController', [ + '$scope', '$log', '$timeout', function ($scope, console, $timeout) { + var datasource = {}; + + datasource.get = function (index, count, success) { + $timeout(function () { + var result = []; + for (var i = index; i <= index + count - 1; i++) { + result.push("item #" + i); + } + success(result); + }, 100); + }; + + $scope.datasource = datasource; + $scope.adapter = {}; + + $scope.setUserMinIndex = function () { + var userMinIndex = parseInt($scope.userMinIndex, 10); + if(!isNaN(userMinIndex)) + $scope.datasource.minIndex = userMinIndex; + }; + + $scope.setUserMaxIndex = function () { + var userMaxIndex = parseInt($scope.userMaxIndex, 10); + if(!isNaN(userMaxIndex)) + $scope.datasource.maxIndex = userMaxIndex; + }; + + $scope.setUserIndexes = function () { + $scope.setUserMinIndex(); + $scope.setUserMaxIndex(); + }; + + $scope.delay = false; + $timeout(function() { + $scope.delay = true; + }, 500); + + } ]); \ No newline at end of file diff --git a/dist/ui-scroll-grid.js b/dist/ui-scroll-grid.js index d7817ab4..6ccf3f2e 100644 --- a/dist/ui-scroll-grid.js +++ b/dist/ui-scroll-grid.js @@ -1,7 +1,7 @@ /*! * angular-ui-scroll * https://github.com/angular-ui/ui-scroll - * Version: 1.7.4 -- 2019-07-31T12:43:10.830Z + * Version: 1.7.4 -- 2019-08-16T21:00:27.398Z * License: MIT */ /******/ (function(modules) { // webpackBootstrap diff --git a/dist/ui-scroll-jqlite.js b/dist/ui-scroll-jqlite.js index c542a1a4..7fae71e5 100644 --- a/dist/ui-scroll-jqlite.js +++ b/dist/ui-scroll-jqlite.js @@ -1,12 +1,12 @@ -/*! - * angular-ui-scroll - * https://github.com/angular-ui/ui-scroll.git - * This module is deprecated since 1.6.0 and will be removed in future versions! - * License: MIT - */ -(function () { - 'use strict'; - - angular.module('ui.scroll.jqlite', []); - +/*! + * angular-ui-scroll + * https://github.com/angular-ui/ui-scroll.git + * This module is deprecated since 1.6.0 and will be removed in future versions! + * License: MIT + */ +(function () { + 'use strict'; + + angular.module('ui.scroll.jqlite', []); + })(); \ No newline at end of file diff --git a/dist/ui-scroll-jqlite.min.js b/dist/ui-scroll-jqlite.min.js index c542a1a4..7fae71e5 100644 --- a/dist/ui-scroll-jqlite.min.js +++ b/dist/ui-scroll-jqlite.min.js @@ -1,12 +1,12 @@ -/*! - * angular-ui-scroll - * https://github.com/angular-ui/ui-scroll.git - * This module is deprecated since 1.6.0 and will be removed in future versions! - * License: MIT - */ -(function () { - 'use strict'; - - angular.module('ui.scroll.jqlite', []); - +/*! + * angular-ui-scroll + * https://github.com/angular-ui/ui-scroll.git + * This module is deprecated since 1.6.0 and will be removed in future versions! + * License: MIT + */ +(function () { + 'use strict'; + + angular.module('ui.scroll.jqlite', []); + })(); \ No newline at end of file diff --git a/dist/ui-scroll.js b/dist/ui-scroll.js index e3b9e64e..c005a5d4 100644 --- a/dist/ui-scroll.js +++ b/dist/ui-scroll.js @@ -1,7 +1,7 @@ /*! * angular-ui-scroll * https://github.com/angular-ui/ui-scroll - * Version: 1.7.4 -- 2019-07-31T12:43:10.830Z + * Version: 1.7.4 -- 2019-08-16T21:00:27.398Z * License: MIT */ /******/ (function(modules) { // webpackBootstrap @@ -113,15 +113,15 @@ function _defineProperties(target, props) { for (var i = 0; i < props.length; i+ function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; } -/*! - globals: angular, window - List of used element methods available in JQuery but not in JQuery Lite - element.before(elem) - element.height() - element.outerHeight(true) - element.height(value) = only for Top/Bottom padding elements - element.scrollTop() - element.scrollTop(value) +/*! + globals: angular, window + List of used element methods available in JQuery but not in JQuery Lite + element.before(elem) + element.height() + element.outerHeight(true) + element.height(value) = only for Top/Bottom padding elements + element.scrollTop() + element.scrollTop(value) */ var jqLiteExtras_JQLiteExtras = /*#__PURE__*/ @@ -342,8 +342,8 @@ function () { return getWidthHeight(this[0], 'width', option ? 'outerfull' : 'outer'); }, - /* - The offset setter method is not implemented + /* + The offset setter method is not implemented */ offset: function offset(value) { var docElem, win; @@ -509,7 +509,7 @@ function () { // CONCATENATED MODULE: ./src/modules/buffer.js -function ScrollBuffer(elementRoutines, bufferSize, startIndex) { +function ScrollBuffer(elementRoutines, bufferSize, startIndex, rowHeight) { var buffer = Object.create(Array.prototype); angular.extend(buffer, { size: bufferSize, @@ -519,11 +519,23 @@ function ScrollBuffer(elementRoutines, bufferSize, startIndex) { buffer.bof = false; buffer.first = startIndex; buffer.next = startIndex; - buffer.minIndex = startIndex; + buffer.minIndex = startIndex; // Calculated when data is effectively accessed + buffer.maxIndex = startIndex; - buffer.minIndexUser = null; + buffer.minIndexUser = null; // as set by the user (datasource) + buffer.maxIndexUser = null; }, + // PHIL: set the new index to be displayed without resettng the sroll and the calculated min/max + // Note that this actually make sense with a fixed rowHeight when the scroll value can be calculated + // for a # of rows + resetStartIndex: function resetStartIndex(startIndex) { + buffer.remove(0, buffer.length); + buffer.eof = buffer.eof && startIndex == buffer.maxIndex; + buffer.bof = buffer.bof && startIndex == buffer.maxIndex; + buffer.first = startIndex; + buffer.next = startIndex; + }, append: function append(items) { items.forEach(function (item) { ++buffer.next; @@ -539,11 +551,11 @@ function ScrollBuffer(elementRoutines, bufferSize, startIndex) { buffer.minIndex = buffer.bof ? buffer.minIndex = buffer.first : Math.min(buffer.first, buffer.minIndex); }, - /** - * inserts wrapped element in the buffer - * the first argument is either operation keyword (see below) or a number for operation 'insert' - * for insert the number is the index for the buffer element the new one have to be inserted after - * operations: 'append', 'prepend', 'insert', 'remove', 'update', 'none' + /** + * inserts wrapped element in the buffer + * the first argument is either operation keyword (see below) or a number for operation 'insert' + * for insert the number is the index for the buffer element the new one have to be inserted after + * operations: 'append', 'prepend', 'insert', 'remove', 'update', 'none' */ insert: function insert(operation, item, isTop) { var wrapper = { @@ -653,10 +665,33 @@ function ScrollBuffer(elementRoutines, bufferSize, startIndex) { if (wrapper.element[0].offsetParent) { // element style is not display:none top = Math.min(top, wrapper.element.offset().top); - bottom = Math.max(bottom, wrapper.element.offset().top + wrapper.element.outerHeight(true)); + bottom = Math.max(bottom, wrapper.element.offset().top + (rowHeight || wrapper.element.outerHeight(true))); } }); return Math.max(0, bottom - top); + }, + getItems: function getItems() { + return buffer.filter(function (item) { + return item.op === 'none'; + }); + }, + getFirstItem: function getFirstItem() { + var list = buffer.getItems(); + + if (!list.length) { + return null; + } + + return list[0].item; + }, + getLastItem: function getLastItem() { + var list = buffer.getItems(); + + if (!list.length) { + return null; + } + + return list[list.length - 1].item; } }); buffer.reset(startIndex); @@ -764,21 +799,30 @@ function generateElement(template) { } return element; -} +} // +// Padding represents the dummy element added to both the top and the bottom of the scrolling container +// It holds the element, as well as a cache for the items (rows) height. In case of a fixed rowHeight, the +// cache is not used and thus is not created. +// + var Padding = /*#__PURE__*/ function () { - function Padding(template) { + function Padding(template, useCache) { padding_classCallCheck(this, Padding); this.element = generateElement(template); - this.cache = new Cache(); + + if (useCache) { + this.cache = new Cache(); + } } padding_createClass(Padding, [{ key: "height", value: function height() { + // When called with a parameter, this sets the height of the padding return this.element.height.apply(this.element, arguments); } }]); @@ -789,7 +833,7 @@ function () { /* harmony default export */ var modules_padding = (Padding); // CONCATENATED MODULE: ./src/modules/viewport.js -function Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding) { +function Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding, rowHeight) { var topPadding = null; var bottomPadding = null; var viewport = viewportController && viewportController.viewport ? viewportController.viewport : angular.element(window); @@ -803,15 +847,41 @@ function Viewport(elementRoutines, buffer, element, viewportController, $rootSco function bufferPadding() { return viewport.outerHeight() * padding; // some extra space to initiate preload - } + } // + // Viewport measurements + // + // +----------------+ 0 + // | top | + // | padding | + // +----------------+ topDataPos() [=topPadding.height] + // | not visible | + // | items | + // +----------------+ topVisiblePos() [=viewport.scrollTop] + // | | + // | visible | + // | items | + // | | + // +----------------+ bottomVisiblePos() [=viewport.scrollTop+viewport.height] + // | not visible | + // | items | + // +----------------+ bottomDataPos() [=scrollHeight-bottomPadding.height] + // | bottom | + // | padding | + // +----------------+ scrollHeight + // + // bufferPadding is some extra space we have top & bottom to allow infinite scrolling + // bufferPadding = viewport.outerHeight() * padding + // + // bottomVisiblePos() - topVisiblePos() == viewport.outerHeight() + angular.extend(viewport, { getScope: function getScope() { return scope; }, createPaddingElements: function createPaddingElements(template) { - topPadding = new modules_padding(template); - bottomPadding = new modules_padding(template); + topPadding = new modules_padding(template, !rowHeight); + bottomPadding = new modules_padding(template, !rowHeight); element.before(topPadding.element); element.after(bottomPadding.element); topPadding.height(0); @@ -854,20 +924,25 @@ function Viewport(elementRoutines, buffer, element, viewportController, $rootSco clipBottom: function clipBottom() { // clip the invisible items off the bottom var overage = 0; - var overageHeight = 0; - var itemHeight = 0; var emptySpaceHeight = viewport.bottomDataPos() - viewport.bottomVisiblePos() - bufferPadding(); - for (var i = buffer.length - 1; i >= 0; i--) { - itemHeight = buffer[i].element.outerHeight(true); + if (rowHeight) { + overage = Math.min(buffer.length, Math.floor(emptySpaceHeight / rowHeight)); + } else { + var itemHeight = 0; + var overageHeight = 0; - if (overageHeight + itemHeight > emptySpaceHeight) { - break; - } + for (var i = buffer.length - 1; i >= 0; i--) { + itemHeight = buffer[i].element.outerHeight(true); - bottomPadding.cache.add(buffer[i]); - overageHeight += itemHeight; - overage++; + if (overageHeight + itemHeight > emptySpaceHeight) { + break; + } + + bottomPadding.cache.add(buffer[i]); + overageHeight += itemHeight; + overage++; + } } if (overage > 0) { @@ -884,19 +959,25 @@ function Viewport(elementRoutines, buffer, element, viewportController, $rootSco // clip the invisible items off the top var overage = 0; var overageHeight = 0; - var itemHeight = 0; var emptySpaceHeight = viewport.topVisiblePos() - viewport.topDataPos() - bufferPadding(); - for (var i = 0; i < buffer.length; i++) { - itemHeight = buffer[i].element.outerHeight(true); + if (rowHeight) { + overage = Math.min(buffer.length, Math.floor(emptySpaceHeight / rowHeight)); + overageHeight = overage * rowHeight; + } else { + var itemHeight = 0; - if (overageHeight + itemHeight > emptySpaceHeight) { - break; - } + for (var i = 0; i < buffer.length; i++) { + itemHeight = buffer[i].element.outerHeight(true); + + if (overageHeight + itemHeight > emptySpaceHeight) { + break; + } - topPadding.cache.add(buffer[i]); - overageHeight += itemHeight; - overage++; + topPadding.cache.add(buffer[i]); + overageHeight += itemHeight; + overage++; + } } if (overage > 0) { @@ -908,7 +989,37 @@ function Viewport(elementRoutines, buffer, element, viewportController, $rootSco buffer.first += overage; } }, + // PHIL: remove all the entries in the buffer without changing the scrollbar, nor the scroll position + // and update the padding accordingly + // It is designed to work with non fixed rowHeight, although it will need more tests in this area... + scrollTo: function scrollTo(first) { + if (rowHeight) { + first = Math.min(first, buffer.maxIndex); + first = Math.max(first, buffer.minIndex); + var min = buffer.getAbsMinIndex(); + var max = buffer.getAbsMaxIndex(); // Adjust the paddings before removing the elements to avoid touching the scroll top position + + topPadding.height((first - min) * rowHeight); + bottomPadding.height((max + 1 - first) * rowHeight); + buffer.resetStartIndex(first); + } else { + buffer.resetStartIndex(first); + viewport.adjustPaddings(); + } + }, adjustPaddings: function adjustPaddings() { + if (rowHeight) { + var min = buffer.getAbsMinIndex(); + var max = buffer.getAbsMaxIndex(); + topPadding.height((buffer.first - min) * rowHeight); // PHIL: next points to the next possible item, while max is the index of the last one. + // In order to make them compatible, we should add one to max + // Also, it looks like buffer is not changing maxIndex when an element is inserted/appended + // Not sure if this can have a consequence or not.... + + bottomPadding.height((max + 1 - buffer.next) * rowHeight); + return; + } + if (!buffer.length) { return; } // precise heights calculation based on items that are in buffer or that were in buffer once @@ -970,15 +1081,26 @@ function Viewport(elementRoutines, buffer, element, viewportController, $rootSco }, resetTopPadding: function resetTopPadding() { topPadding.height(0); - topPadding.cache.clear(); + + if (topPadding.cache) { + topPadding.cache.clear(); + } }, resetBottomPadding: function resetBottomPadding() { bottomPadding.height(0); - bottomPadding.cache.clear(); + + if (bottomPadding.cache) { + bottomPadding.cache.clear(); + } }, removeCacheItem: function removeCacheItem(item, isTop) { - topPadding.cache.remove(item, isTop); - bottomPadding.cache.remove(item, isTop); + if (topPadding.cache) { + topPadding.cache.remove(item, isTop); + } + + if (bottomPadding.cache) { + bottomPadding.cache.remove(item, isTop); + } }, removeItem: function removeItem(item) { this.removeCacheItem(item); @@ -1070,6 +1192,21 @@ function () { for (var _i = publicProps.length - 1; _i >= 0; _i--) { _loop(_i); + } // read-only immediately calculated public properties + + + var publicPropsImmediate = ['bufferFirst', 'bufferLast', 'bufferLength']; + + var _loop2 = function _loop2(_i2) { + Object.defineProperty(_this.publicContext, publicPropsImmediate[_i2], { + get: function get() { + return _this[publicPropsImmediate[_i2]]; + } + }); + }; + + for (var _i2 = publicPropsImmediate.length - 1; _i2 >= 0; _i2--) { + _loop2(_i2); } // non-read-only public property @@ -1120,29 +1257,31 @@ function () { } }, { key: "applyUpdates", - value: function applyUpdates(arg1, arg2) { + value: function applyUpdates(arg1, arg2, arg3) { if (typeof arg1 === 'function') { - this.applyUpdatesFunc(arg1); + this.applyUpdatesFunc(arg1, arg2); } else { - this.applyUpdatesIndex(arg1, arg2); + this.applyUpdatesIndex(arg1, arg2, arg3); } this.doAdjust(); } }, { key: "applyUpdatesFunc", - value: function applyUpdatesFunc(cb) { + value: function applyUpdatesFunc(cb, options) { var _this2 = this; this.buffer.slice(0).forEach(function (wrapper) { // we need to do it on the buffer clone, because buffer content // may change as we iterate through - _this2.applyUpdate(wrapper, cb(wrapper.item, wrapper.scope, wrapper.element)); + _this2.applyUpdate(wrapper, cb(wrapper.item, wrapper.scope, wrapper.element), options); }); } }, { key: "applyUpdatesIndex", value: function applyUpdatesIndex(index, newItems) { + var options = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : {}; + if (index % 1 !== 0) { throw new Error('applyUpdates - ' + index + ' is not a valid index (should be an integer)'); } @@ -1151,13 +1290,13 @@ function () { if (_index >= 0 && _index < this.buffer.length) { - this.applyUpdate(this.buffer[_index], newItems); + this.applyUpdate(this.buffer[_index], newItems, options); } // out-of-buffer case: deletion may affect Paddings else if (index >= this.buffer.getAbsMinIndex() && index <= this.buffer.getAbsMaxIndex()) { if (angular.isArray(newItems) && !newItems.length) { - this.viewport.removeCacheItem(index, index === this.buffer.minIndex); + this.viewport.removeCacheItem(index, !options.immutableTop && index === this.buffer.minIndex); - if (index === this.buffer.getAbsMinIndex()) { + if (!options.immutableTop && index === this.buffer.getAbsMinIndex()) { this.buffer.incrementMinIndex(); } else { this.buffer.decrementMaxIndex(); @@ -1170,6 +1309,8 @@ function () { value: function applyUpdate(wrapper, newItems) { var _this3 = this; + var options = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : {}; + if (!angular.isArray(newItems)) { return; } @@ -1181,7 +1322,7 @@ function () { })) { wrapper.op = 'remove'; - if (position === 0 && !newItems.length) { + if (!options.immutableTop && position === 0 && !newItems.length) { wrapper._op = 'isTop'; // to catch "first" edge case on remove } } @@ -1191,7 +1332,7 @@ function () { position--; } else { // 3 parameter (isTop) is to catch "first" edge case on insert - _this3.buffer.insert(position + 1, newItem, position === -1); + _this3.buffer.insert(position + 1, newItem, !options.immutableTop && position === -1); } }); } @@ -1237,6 +1378,21 @@ function () { } } } + }, { + key: "bufferLength", + get: function get() { + return this.buffer.getItems().length; + } + }, { + key: "bufferFirst", + get: function get() { + return this.buffer.getFirstItem(); + } + }, { + key: "bufferLast", + get: function get() { + return this.buffer.getLastItem(); + } }]); return Adapter; @@ -1300,31 +1456,52 @@ angular.module('ui.scroll', []).constant('JQLiteExtras', jqLiteExtras_JQLiteExtr return parseNumber(result, defaultValue, isFloat); } - var BUFFER_MIN = 3; - var BUFFER_DEFAULT = 10; - var PADDING_MIN = 0.3; - var PADDING_DEFAULT = 0.5; - var START_INDEX_DEFAULT = 1; - var MAX_VIEWPORT_DELAY = 500; - var VIEWPORT_POLLING_INTERVAL = 50; + var BUFFER_MIN = 3; // Minimum size of the data source request + + var BUFFER_DEFAULT = 10; // Default datasource request size + + var PADDING_MIN = 0.3; // Mininum # of rows in the padding area + + var PADDING_DEFAULT = 0.5; // Default # of rows in the padding area + + var START_INDEX_DEFAULT = 1; // Default start index when requestng the first data block + + var MAX_VIEWPORT_DELAY = 500; // Max time wait (ms) to get the viewport with an height>0 + + var VIEWPORT_POLLING_INTERVAL = 50; // Interval used to check the initial viewport height + var datasource = null; - var itemName = match[1]; - var datasourceName = match[2]; - var viewportController = controllers[0]; + var itemName = match[1]; // Name of the index variable to publish + + var datasourceName = match[2]; // Name of the datasource to request the rows from + + var viewportController = controllers[0]; // ViewportController, as specified in the require option (http://websystique.com/angularjs/angularjs-custom-directives-controllers-require-option-guide/) + var bufferSize = Math.max(BUFFER_MIN, parseNumericAttr($attr.bufferSize, BUFFER_DEFAULT)); var padding = Math.max(PADDING_MIN, parseNumericAttr($attr.padding, PADDING_DEFAULT, true)); - var startIndex = parseNumericAttr($attr.startIndex, START_INDEX_DEFAULT); + var startIndex = parseNumericAttr($attr.startIndex, START_INDEX_DEFAULT); // PHIL: Provide a fixed row height + // + + var rowHeight = parseNumericAttr($attr.rowHeight, null, false); // PHIL: Read the visibility watch option, true by default + + var allowVisibilityWatch = $attr.allowVisibilityWatch !== 'false'; // Revision IDs + // + var ridActual = 0; // current data revision id var pending = []; var elementRoutines = new ElementRoutines($injector, $q); - var buffer = new ScrollBuffer(elementRoutines, bufferSize, startIndex); - var viewport = new Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding); + var buffer = new ScrollBuffer(elementRoutines, bufferSize, startIndex, rowHeight); + var viewport = new Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding, rowHeight); var adapter = new modules_adapter($scope, $parse, $attr, viewport, buffer, doAdjust, reload); if (viewportController) { viewportController.adapter = adapter; - } + } // Currently, we only debounce the scroll events when a fixed rowHeight is provided + // as the unit tests will have to be adapted to support this feature + + + var scPreviousScrollTop = -1; var isDatasourceValid = function isDatasourceValid() { return Object.prototype.toString.call(datasource) === '[object Object]' && typeof datasource.get === 'function'; @@ -1474,7 +1651,12 @@ angular.module('ui.scroll', []).constant('JQLiteExtras', jqLiteExtras_JQLiteExtr function bindEvents() { viewport.bind('resize', resizeAndScrollHandler); - viewport.bind('scroll', resizeAndScrollHandler); + viewport.bind('scroll', resizeAndScrollHandler); // If a scroll event happened while the handler was not bounded, emit the scroll + + if (isPendingScroll()) { + // Do it immediately + _resizeAndScrollHandler(); + } } function unbindEvents() { @@ -1492,13 +1674,21 @@ angular.module('ui.scroll', []).constant('JQLiteExtras', jqLiteExtras_JQLiteExtr } buffer.reset(startIndex); + scPreviousScrollTop = -1; // Avoid isScrollPending() to be true + persistDatasourceIndex(datasource, 'minIndex'); persistDatasourceIndex(datasource, 'maxIndex'); doAdjust(); } + function scrollTo(first) { + unbindEvents(); + viewport.scrollTo(first); + doAdjust(); + } + function isElementVisible(wrapper) { - return wrapper.element.height() && wrapper.element[0].offsetParent; + return (rowHeight || wrapper.element.height()) && wrapper.element[0].offsetParent; } function visibilityWatcher(wrapper) { @@ -1521,13 +1711,15 @@ angular.module('ui.scroll', []).constant('JQLiteExtras', jqLiteExtras_JQLiteExtr function insertWrapperContent(wrapper, insertAfter) { createElement(wrapper, insertAfter, viewport.insertElement); - if (!isElementVisible(wrapper)) { + if (allowVisibilityWatch && !isElementVisible(wrapper)) { wrapper.unregisterVisibilityWatcher = wrapper.scope.$watch(function () { return visibilityWatcher(wrapper); }); } - elementRoutines.hideElement(wrapper); // hide inserted elements before data binding + if (allowVisibilityWatch) { + elementRoutines.hideElement(wrapper); // hide inserted elements before data binding + } } function createElement(wrapper, insertAfter, insertElement) { @@ -1601,7 +1793,9 @@ angular.module('ui.scroll', []).constant('JQLiteExtras', jqLiteExtras_JQLiteExtr inserted: inserted, animated: promises }; - } + } // Adjust the viewport paddings + // + function updatePaddings(rid, updates) { // schedule another doAdjust after animation completion @@ -1616,6 +1810,14 @@ angular.module('ui.scroll', []).constant('JQLiteExtras', jqLiteExtras_JQLiteExtr } function enqueueFetch(rid, updates) { + // If there is a scroll pending, we don't enqueue the fetch as the scroll might be an absolute scroll + // So we don't need to load top or bottom + // This happens when there is a scroll frenzi, and the $digest is slow enough, so it stacks the calls without + // giving a chance to the scroll event to be emitted and processed. + if (isPendingScroll()) { + return; + } + if (viewport.shouldLoadBottom()) { if (!updates || buffer.effectiveHeight(updates.inserted) > 0) { // this means that at least one item appended in the last batch has height > 0 @@ -1639,14 +1841,23 @@ angular.module('ui.scroll', []).constant('JQLiteExtras', jqLiteExtras_JQLiteExtr function processUpdates() { var updates = updateDOM(); // We need the item bindings to be processed before we can do adjustments + // If there are no changes and the row-height is static, then ignore it! + + var changes = updates.animated.length + updates.inserted.length + updates.prepended.length + updates.removed.length; + + if (changes || !rowHeight) { + !$scope.$$phase && !$rootScope.$$phase && $scope.$digest(); + } + + if (allowVisibilityWatch) { + updates.inserted.forEach(function (w) { + return elementRoutines.showElement(w); + }); + updates.prepended.forEach(function (w) { + return elementRoutines.showElement(w); + }); + } - !$scope.$$phase && !$rootScope.$$phase && $scope.$digest(); - updates.inserted.forEach(function (w) { - return elementRoutines.showElement(w); - }); - updates.prepended.forEach(function (w) { - return elementRoutines.showElement(w); - }); return updates; } @@ -1741,15 +1952,64 @@ angular.module('ui.scroll', []).constant('JQLiteExtras', jqLiteExtras_JQLiteExtr } } + function isPendingScroll() { + if (rowHeight) { + // Maybe the scroll changed but the event has *not* yet being dispatched + // because of the $digest running and taking to long + var sc = viewport.scrollTop(); + + if (sc != scPreviousScrollTop && scPreviousScrollTop >= 0) { + return true; + } + } + + return false; + } // Deboucing the scroll events avois intermediate $digest when scrolling fast + + + var scTimer; + function resizeAndScrollHandler() { + if (rowHeight) { + if (scTimer) clearTimeout(scTimer); + scTimer = setTimeout(_resizeAndScrollHandler, 20); + } else { + _resizeAndScrollHandler(); + } + } + + function _resizeAndScrollHandler() { if (!$rootScope.$$phase && !adapter.isLoading && !adapter.disabled) { + // Absolute positioning currently only works when a fixed rowHeight is provided + // We might isolate the averegaRowHeight calculation in the viewport to provide an estimate + // and provide a reasonable behavior with variable height as well + if (rowHeight) { + scPreviousScrollTop = viewport.scrollTop(); + var newFirst = Math.floor(viewport.scrollTop() / rowHeight) + buffer.minIndex; + newFirst = Math.max(buffer.minIndex, Math.min(buffer.maxIndex, newFirst)); // Bound the scroll + + if (newFirst < buffer.first - bufferSize) { + scrollTo(newFirst); + return; + } + + if (newFirst >= buffer.next) { + scrollTo(newFirst); + return; + } + } + enqueueFetch(ridActual); if (pending.length) { unbindEvents(); } else { adapter.calculateProperties(); - !$scope.$$phase && $scope.$digest(); + + if (!rowHeight) { + // The digest is forced to calculate the height, which is not necessary when the height is knowm + !$scope.$$phase && $scope.$digest(); + } } } } diff --git a/dist/ui-scroll.js.map b/dist/ui-scroll.js.map index c99f2461..56f186e9 100644 --- a/dist/ui-scroll.js.map +++ b/dist/ui-scroll.js.map @@ -1 +1 @@ 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\t\t__webpack_require__.r(ns);\n \t\tObject.defineProperty(ns, 'default', { enumerable: true, value: value });\n \t\tif(mode & 2 && typeof value != 'string') for(var key in value) __webpack_require__.d(ns, key, function(key) { return value[key]; }.bind(null, key));\n \t\treturn ns;\n \t};\n\n \t// getDefaultExport function for compatibility with non-harmony modules\n \t__webpack_require__.n = function(module) {\n \t\tvar getter = module && module.__esModule ?\n \t\t\tfunction getDefault() { return module['default']; } :\n \t\t\tfunction getModuleExports() { return module; };\n \t\t__webpack_require__.d(getter, 'a', getter);\n \t\treturn getter;\n \t};\n\n \t// Object.prototype.hasOwnProperty.call\n \t__webpack_require__.o = function(object, property) { return Object.prototype.hasOwnProperty.call(object, property); };\n\n \t// __webpack_public_path__\n \t__webpack_require__.p = \"\";\n\n\n \t// Load entry module and return exports\n \treturn __webpack_require__(__webpack_require__.s = 1);\n","/*!\r\n globals: angular, window\r\n List of used element methods available in JQuery but not in JQuery Lite\r\n element.before(elem)\r\n element.height()\r\n element.outerHeight(true)\r\n element.height(value) = only for Top/Bottom padding elements\r\n element.scrollTop()\r\n element.scrollTop(value)\r\n */\r\n\r\nexport default class JQLiteExtras {\r\n\r\n registerFor(element) {\r\n let convertToPx, css, getStyle, isWindow;\r\n // angular implementation blows up if elem is the window\r\n css = angular.element.prototype.css;\r\n\r\n element.prototype.css = function (name, value) {\r\n let self = this;\r\n let elem = self[0];\r\n if (!(!elem || elem.nodeType === 3 || elem.nodeType === 8 || !elem.style)) {\r\n return css.call(self, name, value);\r\n }\r\n };\r\n\r\n // as defined in angularjs v1.0.5\r\n isWindow = (obj) => obj && obj.document && obj.location && obj.alert && obj.setInterval;\r\n\r\n function scrollTo(self, direction, value) {\r\n let elem = self[0];\r\n let [method, prop, preserve] = {\r\n top: [\r\n 'scrollTop',\r\n 'pageYOffset',\r\n 'scrollLeft'\r\n ],\r\n left: [\r\n 'scrollLeft',\r\n 'pageXOffset',\r\n 'scrollTop'\r\n ]\r\n }[direction];\r\n\r\n const isValueDefined = typeof value !== 'undefined';\r\n if (isWindow(elem)) {\r\n if (isValueDefined) {\r\n return elem.scrollTo(self[preserve].call(self), value);\r\n }\r\n return (prop in elem) ? elem[prop] : elem.document.documentElement[method];\r\n } else {\r\n if (isValueDefined) {\r\n elem[method] = value;\r\n }\r\n return elem[method];\r\n }\r\n }\r\n\r\n if (window.getComputedStyle) {\r\n getStyle = (elem) => window.getComputedStyle(elem, null);\r\n convertToPx = (elem, value) => parseFloat(value);\r\n } else {\r\n getStyle = (elem) => elem.currentStyle;\r\n convertToPx = (elem, value) => {\r\n let left, result, rs, rsLeft, style;\r\n let core_pnum = /[+-]?(?:\\d*\\.|)\\d+(?:[eE][+-]?\\d+|)/.source;\r\n let rnumnonpx = new RegExp('^(' + core_pnum + ')(?!px)[a-z%]+$', 'i');\r\n\r\n if (!rnumnonpx.test(value)) {\r\n return parseFloat(value);\r\n }\r\n\r\n // ported from JQuery\r\n style = elem.style;\r\n left = style.left;\r\n rs = elem.runtimeStyle;\r\n rsLeft = rs && rs.left;\r\n if (rs) {\r\n rs.left = style.left;\r\n }\r\n // put in the new values to get a computed style out\r\n style.left = value;\r\n result = style.pixelLeft;\r\n style.left = left;\r\n if (rsLeft) {\r\n rs.left = rsLeft;\r\n }\r\n return result;\r\n };\r\n }\r\n\r\n function getMeasurements(elem, measure) {\r\n let base, borderA, borderB, computedMarginA, computedMarginB, computedStyle, dirA, dirB, marginA, marginB, paddingA, paddingB;\r\n\r\n if (isWindow(elem)) {\r\n base = document.documentElement[{height: 'clientHeight', width: 'clientWidth'}[measure]];\r\n\r\n return {\r\n base: base,\r\n padding: 0,\r\n border: 0,\r\n margin: 0\r\n };\r\n }\r\n\r\n // Start with offset property\r\n [\r\n base,\r\n dirA,\r\n dirB\r\n ] = {\r\n width: [\r\n elem.offsetWidth,\r\n 'Left',\r\n 'Right'\r\n ],\r\n height: [\r\n elem.offsetHeight,\r\n 'Top',\r\n 'Bottom'\r\n ]\r\n }[measure];\r\n\r\n computedStyle = getStyle(elem);\r\n paddingA = convertToPx(elem, computedStyle['padding' + dirA]) || 0;\r\n paddingB = convertToPx(elem, computedStyle['padding' + dirB]) || 0;\r\n borderA = convertToPx(elem, computedStyle['border' + dirA + 'Width']) || 0;\r\n borderB = convertToPx(elem, computedStyle['border' + dirB + 'Width']) || 0;\r\n computedMarginA = computedStyle['margin' + dirA];\r\n computedMarginB = computedStyle['margin' + dirB];\r\n\r\n // I do not care for width for now, so this hack is irrelevant\r\n // if ( !supportsPercentMargin )\r\n // computedMarginA = hackPercentMargin( elem, computedStyle, computedMarginA )\r\n // computedMarginB = hackPercentMargin( elem, computedStyle, computedMarginB )\r\n marginA = convertToPx(elem, computedMarginA) || 0;\r\n marginB = convertToPx(elem, computedMarginB) || 0;\r\n\r\n return {\r\n base: base,\r\n padding: paddingA + paddingB,\r\n border: borderA + borderB,\r\n margin: marginA + marginB\r\n };\r\n }\r\n\r\n function getWidthHeight(elem, direction, measure) {\r\n let computedStyle, result;\r\n\r\n let measurements = getMeasurements(elem, direction);\r\n\r\n if (measurements.base > 0) {\r\n return {\r\n base: measurements.base - measurements.padding - measurements.border,\r\n outer: measurements.base,\r\n outerfull: measurements.base + measurements.margin\r\n }[measure];\r\n }\r\n\r\n // Fall back to computed then uncomputed css if necessary\r\n computedStyle = getStyle(elem);\r\n result = computedStyle[direction];\r\n\r\n if (result < 0 || result === null) {\r\n result = elem.style[direction] || 0;\r\n }\r\n\r\n // Normalize \"\", auto, and prepare for extra\r\n result = parseFloat(result) || 0;\r\n\r\n return {\r\n base: result - measurements.padding - measurements.border,\r\n outer: result,\r\n outerfull: result + measurements.padding + measurements.border + measurements.margin\r\n }[measure];\r\n }\r\n\r\n // define missing methods\r\n return angular.forEach({\r\n before(newElem) {\r\n var children, elem, i, j, parent, ref, self;\r\n self = this;\r\n elem = self[0];\r\n parent = self.parent();\r\n children = parent.contents();\r\n if (children[0] === elem) {\r\n return parent.prepend(newElem);\r\n } else {\r\n for (i = j = 1, ref = children.length - 1; 1 <= ref ? j <= ref : j >= ref; i = 1 <= ref ? ++j : --j) {\r\n if (children[i] === elem) {\r\n angular.element(children[i - 1]).after(newElem);\r\n return;\r\n }\r\n }\r\n throw new Error('invalid DOM structure ' + elem.outerHTML);\r\n }\r\n },\r\n height (value){\r\n var self;\r\n self = this;\r\n if (typeof value !== 'undefined') {\r\n if (angular.isNumber(value)) {\r\n value = value + 'px';\r\n }\r\n return css.call(self, 'height', value);\r\n } else {\r\n return getWidthHeight(this[0], 'height', 'base');\r\n }\r\n },\r\n outerHeight(option) {\r\n return getWidthHeight(this[0], 'height', option ? 'outerfull' : 'outer');\r\n },\r\n outerWidth(option) {\r\n return getWidthHeight(this[0], 'width', option ? 'outerfull' : 'outer');\r\n },\r\n\r\n /*\r\n The offset setter method is not implemented\r\n */\r\n offset(value) {\r\n let docElem, win;\r\n let self = this;\r\n let box = {\r\n top: 0,\r\n left: 0\r\n };\r\n let elem = self[0];\r\n let doc = elem && elem.ownerDocument;\r\n\r\n if (arguments.length) {\r\n if (value === undefined) {\r\n return self;\r\n }\r\n // TODO: implement setter\r\n throw new Error('offset setter method is not implemented');\r\n }\r\n\r\n if (!doc) {\r\n return;\r\n }\r\n\r\n docElem = doc.documentElement;\r\n\r\n // TODO: Make sure it's not a disconnected DOM node\r\n\r\n if (elem.getBoundingClientRect != null) {\r\n box = elem.getBoundingClientRect();\r\n }\r\n\r\n win = doc.defaultView || doc.parentWindow;\r\n\r\n return {\r\n top: box.top + (win.pageYOffset || docElem.scrollTop) - (docElem.clientTop || 0),\r\n left: box.left + (win.pageXOffset || docElem.scrollLeft) - (docElem.clientLeft || 0)\r\n };\r\n },\r\n scrollTop(value) {\r\n return scrollTo(this, 'top', value);\r\n },\r\n scrollLeft(value) {\r\n return scrollTo(this, 'left', value);\r\n }\r\n }, (value, key) => {\r\n if (!element.prototype[key]) {\r\n return element.prototype[key] = value;\r\n }\r\n });\r\n }\r\n\r\n}\r\n","const hideClassToken = 'ng-ui-scroll-hide';\r\n\r\nexport default class ElementRoutines {\r\n\r\n static addCSSRules() {\r\n const selector = '.' + hideClassToken;\r\n const rules = 'display: none';\r\n const sheet = document.styleSheets[0];\r\n let index;\r\n try {\r\n index = sheet.cssRules.length;\r\n } catch (err) {\r\n index = 0;\r\n }\r\n if('insertRule' in sheet) {\r\n sheet.insertRule(selector + '{' + rules + '}', index);\r\n }\r\n else if('addRule' in sheet) {\r\n sheet.addRule(selector, rules, index);\r\n }\r\n }\r\n\r\n constructor($injector, $q) {\r\n this.$animate = ($injector.has && $injector.has('$animate')) ? $injector.get('$animate') : null;\r\n this.isAngularVersionLessThen1_3 = angular.version.major === 1 && angular.version.minor < 3;\r\n this.$q = $q;\r\n }\r\n\r\n hideElement(wrapper) {\r\n wrapper.element.addClass(hideClassToken);\r\n }\r\n\r\n showElement(wrapper) {\r\n wrapper.element.removeClass(hideClassToken);\r\n }\r\n\r\n insertElement(newElement, previousElement) {\r\n previousElement.after(newElement);\r\n return [];\r\n }\r\n\r\n removeElement(wrapper) {\r\n wrapper.element.remove();\r\n wrapper.scope.$destroy();\r\n return [];\r\n }\r\n\r\n insertElementAnimated(newElement, previousElement) {\r\n if (!this.$animate) {\r\n return this.insertElement(newElement, previousElement);\r\n }\r\n\r\n if (this.isAngularVersionLessThen1_3) {\r\n const deferred = this.$q.defer();\r\n // no need for parent - previous element is never null\r\n this.$animate.enter(newElement, null, previousElement, () => deferred.resolve());\r\n\r\n return [deferred.promise];\r\n }\r\n\r\n // no need for parent - previous element is never null\r\n return [this.$animate.enter(newElement, null, previousElement)];\r\n }\r\n\r\n removeElementAnimated(wrapper) {\r\n if (!this.$animate) {\r\n return this.removeElement(wrapper);\r\n }\r\n\r\n if (this.isAngularVersionLessThen1_3) {\r\n const deferred = this.$q.defer();\r\n this.$animate.leave(wrapper.element, () => {\r\n wrapper.scope.$destroy();\r\n return deferred.resolve();\r\n });\r\n\r\n return [deferred.promise];\r\n }\r\n\r\n return [(this.$animate.leave(wrapper.element)).then(() => wrapper.scope.$destroy())];\r\n }\r\n}","export default function ScrollBuffer(elementRoutines, bufferSize, startIndex) {\r\n const buffer = Object.create(Array.prototype);\r\n\r\n angular.extend(buffer, {\r\n size: bufferSize,\r\n\r\n reset(startIndex) {\r\n buffer.remove(0, buffer.length);\r\n buffer.eof = false;\r\n buffer.bof = false;\r\n buffer.first = startIndex;\r\n buffer.next = startIndex;\r\n buffer.minIndex = startIndex;\r\n buffer.maxIndex = startIndex;\r\n buffer.minIndexUser = null;\r\n buffer.maxIndexUser = null;\r\n },\r\n\r\n append(items) {\r\n items.forEach((item) => {\r\n ++buffer.next;\r\n buffer.insert('append', item);\r\n });\r\n buffer.maxIndex = buffer.eof ? buffer.next - 1 : Math.max(buffer.next - 1, buffer.maxIndex);\r\n },\r\n\r\n prepend(items) {\r\n items.reverse().forEach((item) => {\r\n --buffer.first;\r\n buffer.insert('prepend', item);\r\n });\r\n buffer.minIndex = buffer.bof ? buffer.minIndex = buffer.first : Math.min(buffer.first, buffer.minIndex);\r\n },\r\n\r\n /**\r\n * inserts wrapped element in the buffer\r\n * the first argument is either operation keyword (see below) or a number for operation 'insert'\r\n * for insert the number is the index for the buffer element the new one have to be inserted after\r\n * operations: 'append', 'prepend', 'insert', 'remove', 'update', 'none'\r\n */\r\n insert(operation, item, isTop) {\r\n const wrapper = {\r\n item: item\r\n };\r\n\r\n if (operation % 1 === 0) {// it is an insert\r\n wrapper.op = 'insert';\r\n buffer.splice(operation, 0, wrapper);\r\n if(isTop) {\r\n buffer.first--;\r\n }\r\n else {\r\n buffer.next++;\r\n }\r\n } else {\r\n wrapper.op = operation;\r\n switch (operation) {\r\n case 'append':\r\n buffer.push(wrapper);\r\n break;\r\n case 'prepend':\r\n buffer.unshift(wrapper);\r\n break;\r\n }\r\n }\r\n },\r\n\r\n // removes elements from buffer\r\n remove(arg1, arg2) {\r\n if (angular.isNumber(arg1)) {\r\n // removes items from arg1 (including) through arg2 (excluding)\r\n for (let i = arg1; i < arg2; i++) {\r\n elementRoutines.removeElement(buffer[i]);\r\n }\r\n return buffer.splice(arg1, arg2 - arg1);\r\n }\r\n // removes single item(wrapper) from the buffer\r\n buffer.splice(buffer.indexOf(arg1), 1);\r\n if(arg1._op === 'isTop' && buffer.first === this.getAbsMinIndex()) {\r\n this.incrementMinIndex();\r\n }\r\n else {\r\n this.decrementMaxIndex();\r\n }\r\n if(arg1._op === 'isTop') {\r\n buffer.first++;\r\n }\r\n else {\r\n buffer.next--;\r\n }\r\n if(!buffer.length) {\r\n buffer.first = 1;\r\n buffer.next = 1;\r\n }\r\n\r\n return elementRoutines.removeElementAnimated(arg1);\r\n },\r\n\r\n incrementMinIndex() {\r\n if(buffer.minIndexUser !== null) {\r\n if(buffer.minIndex > buffer.minIndexUser) {\r\n buffer.minIndexUser++;\r\n return;\r\n }\r\n if(buffer.minIndex === buffer.minIndexUser) {\r\n buffer.minIndexUser++;\r\n }\r\n }\r\n buffer.minIndex++;\r\n },\r\n\r\n decrementMaxIndex() {\r\n if(buffer.maxIndexUser !== null && buffer.maxIndex <= buffer.maxIndexUser) {\r\n buffer.maxIndexUser--;\r\n }\r\n buffer.maxIndex--;\r\n },\r\n\r\n getAbsMinIndex() {\r\n if(buffer.minIndexUser !== null) {\r\n return Math.min(buffer.minIndexUser, buffer.minIndex);\r\n }\r\n return buffer.minIndex;\r\n },\r\n\r\n getAbsMaxIndex() {\r\n if(buffer.maxIndexUser !== null) {\r\n return Math.max(buffer.maxIndexUser, buffer.maxIndex);\r\n }\r\n return buffer.maxIndex;\r\n },\r\n\r\n effectiveHeight(elements) {\r\n if (!elements.length) {\r\n return 0;\r\n }\r\n let top = Number.MAX_VALUE;\r\n let bottom = Number.NEGATIVE_INFINITY;\r\n elements.forEach((wrapper) => {\r\n if (wrapper.element[0].offsetParent) {\r\n // element style is not display:none\r\n top = Math.min(top, wrapper.element.offset().top);\r\n bottom = Math.max(bottom, wrapper.element.offset().top + wrapper.element.outerHeight(true));\r\n }\r\n });\r\n return Math.max(0, bottom - top);\r\n }\r\n\r\n });\r\n\r\n buffer.reset(startIndex);\r\n\r\n return buffer;\r\n}\r\n","// Can't just extend the Array, due to Babel does not support built-in classes extending\r\n// This solution was taken from https://stackoverflow.com/questions/46897414/es6-class-extends-array-workaround-for-es5-babel-transpile\r\nclass CacheProto {\r\n add(item) {\r\n for (let i = this.length - 1; i >= 0; i--) {\r\n if (this[i].index === item.scope.$index) {\r\n this[i].height = item.element.outerHeight();\r\n return;\r\n }\r\n }\r\n this.push({\r\n index: item.scope.$index,\r\n height: item.element.outerHeight()\r\n });\r\n this.sort((a, b) => ((a.index < b.index) ? -1 : ((a.index > b.index) ? 1 : 0)));\r\n }\r\n\r\n remove(argument, _isTop) {\r\n const index = argument % 1 === 0 ? argument : argument.scope.$index;\r\n const isTop = argument % 1 === 0 ? _isTop : argument._op === 'isTop';\r\n for (let i = this.length - 1; i >= 0; i--) {\r\n if (this[i].index === index) {\r\n this.splice(i, 1);\r\n break;\r\n }\r\n }\r\n if(!isTop) {\r\n for (let i = this.length - 1; i >= 0; i--) {\r\n if (this[i].index > index) {\r\n this[i].index--;\r\n }\r\n }\r\n }\r\n }\r\n\r\n clear() {\r\n this.length = 0;\r\n }\r\n}\r\n\r\nfunction Cache() {\r\n const instance = [];\r\n instance.push.apply(instance, arguments);\r\n Object.setPrototypeOf(instance, Cache.prototype);\r\n return instance;\r\n}\r\nCache.prototype = Object.create(Array.prototype);\r\nObject.getOwnPropertyNames(CacheProto.prototype).forEach(methodName =>\r\n Cache.prototype[methodName] = CacheProto.prototype[methodName]\r\n);\r\n\r\nfunction generateElement(template) {\r\n if(template.nodeType !== Node.ELEMENT_NODE) {\r\n throw new Error('ui-scroll directive requires an Element node for templating the view');\r\n }\r\n let element;\r\n switch (template.tagName.toLowerCase()) {\r\n case 'dl':\r\n throw new Error(`ui-scroll directive does not support <${template.tagName}> as a repeating tag: ${template.outerHTML}`);\r\n case 'tr':\r\n let table = angular.element('
    ');\r\n element = table.find('tr');\r\n break;\r\n case 'li':\r\n element = angular.element('
  • ');\r\n break;\r\n default:\r\n element = angular.element('
    ');\r\n }\r\n return element;\r\n}\r\n\r\nclass Padding {\r\n constructor(template) {\r\n this.element = generateElement(template);\r\n this.cache = new Cache();\r\n }\r\n\r\n height() {\r\n return this.element.height.apply(this.element, arguments);\r\n }\r\n}\r\n\r\nexport default Padding;","import Padding from './padding';\r\n\r\nexport default function Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding) {\r\n let topPadding = null;\r\n let bottomPadding = null;\r\n const viewport = viewportController && viewportController.viewport ? viewportController.viewport : angular.element(window);\r\n const container = viewportController && viewportController.container ? viewportController.container : undefined;\r\n const scope = viewportController && viewportController.scope ? viewportController.scope : $rootScope;\r\n\r\n viewport.css({\r\n 'overflow-anchor': 'none',\r\n 'overflow-y': 'auto',\r\n 'display': 'block'\r\n });\r\n\r\n function bufferPadding() {\r\n return viewport.outerHeight() * padding; // some extra space to initiate preload\r\n }\r\n\r\n angular.extend(viewport, {\r\n getScope() {\r\n return scope;\r\n },\r\n\r\n createPaddingElements(template) {\r\n topPadding = new Padding(template);\r\n bottomPadding = new Padding(template);\r\n element.before(topPadding.element);\r\n element.after(bottomPadding.element);\r\n topPadding.height(0);\r\n bottomPadding.height(0);\r\n },\r\n\r\n applyContainerStyle() {\r\n if (!container) {\r\n return true;\r\n }\r\n if(container !== viewport) {\r\n viewport.css('height', window.getComputedStyle(container[0]).height);\r\n }\r\n return viewport.height() > 0;\r\n },\r\n\r\n bottomDataPos() {\r\n let scrollHeight = viewport[0].scrollHeight;\r\n scrollHeight = scrollHeight != null ? scrollHeight : viewport[0].document.documentElement.scrollHeight;\r\n return scrollHeight - bottomPadding.height();\r\n },\r\n\r\n topDataPos() {\r\n return topPadding.height();\r\n },\r\n\r\n bottomVisiblePos() {\r\n return viewport.scrollTop() + viewport.outerHeight();\r\n },\r\n\r\n topVisiblePos() {\r\n return viewport.scrollTop();\r\n },\r\n\r\n insertElement(e, sibling) {\r\n return elementRoutines.insertElement(e, sibling || topPadding.element);\r\n },\r\n\r\n insertElementAnimated(e, sibling) {\r\n return elementRoutines.insertElementAnimated(e, sibling || topPadding.element);\r\n },\r\n\r\n shouldLoadBottom() {\r\n return !buffer.eof && viewport.bottomDataPos() < viewport.bottomVisiblePos() + bufferPadding();\r\n },\r\n\r\n clipBottom() {\r\n // clip the invisible items off the bottom\r\n let overage = 0;\r\n let overageHeight = 0;\r\n let itemHeight = 0;\r\n let emptySpaceHeight = viewport.bottomDataPos() - viewport.bottomVisiblePos() - bufferPadding();\r\n\r\n for (let i = buffer.length - 1; i >= 0; i--) {\r\n itemHeight = buffer[i].element.outerHeight(true);\r\n if (overageHeight + itemHeight > emptySpaceHeight) {\r\n break;\r\n }\r\n bottomPadding.cache.add(buffer[i]);\r\n overageHeight += itemHeight;\r\n overage++;\r\n }\r\n\r\n if (overage > 0) {\r\n buffer.eof = false;\r\n buffer.remove(buffer.length - overage, buffer.length);\r\n buffer.next -= overage;\r\n viewport.adjustPaddings();\r\n }\r\n },\r\n\r\n shouldLoadTop() {\r\n return !buffer.bof && (viewport.topDataPos() > viewport.topVisiblePos() - bufferPadding());\r\n },\r\n\r\n clipTop() {\r\n // clip the invisible items off the top\r\n let overage = 0;\r\n let overageHeight = 0;\r\n let itemHeight = 0;\r\n let emptySpaceHeight = viewport.topVisiblePos() - viewport.topDataPos() - bufferPadding();\r\n\r\n for (let i = 0; i < buffer.length; i++) {\r\n itemHeight = buffer[i].element.outerHeight(true);\r\n if (overageHeight + itemHeight > emptySpaceHeight) {\r\n break;\r\n }\r\n topPadding.cache.add(buffer[i]);\r\n overageHeight += itemHeight;\r\n overage++;\r\n }\r\n\r\n if (overage > 0) {\r\n // we need to adjust top padding element before items are removed from top\r\n // to avoid strange behaviour of scroll bar during remove top items when we are at the very bottom\r\n topPadding.height(topPadding.height() + overageHeight);\r\n buffer.bof = false;\r\n buffer.remove(0, overage);\r\n buffer.first += overage;\r\n }\r\n },\r\n\r\n adjustPaddings() {\r\n if (!buffer.length) {\r\n return;\r\n }\r\n\r\n // precise heights calculation based on items that are in buffer or that were in buffer once\r\n const visibleItemsHeight = buffer.reduce((summ, item) => summ + item.element.outerHeight(true), 0);\r\n\r\n let topPaddingHeight = 0, topCount = 0;\r\n topPadding.cache.forEach(item => {\r\n if(item.index < buffer.first) {\r\n topPaddingHeight += item.height;\r\n topCount++;\r\n }\r\n });\r\n\r\n let bottomPaddingHeight = 0, bottomCount = 0;\r\n bottomPadding.cache.forEach(item => {\r\n if(item.index >= buffer.next) {\r\n bottomPaddingHeight += item.height;\r\n bottomCount++;\r\n }\r\n });\r\n\r\n const totalHeight = visibleItemsHeight + topPaddingHeight + bottomPaddingHeight;\r\n const averageItemHeight = totalHeight / (topCount + bottomCount + buffer.length);\r\n\r\n // average heights calculation, items that have never been reached\r\n let adjustTopPadding = buffer.minIndexUser !== null && buffer.minIndex > buffer.minIndexUser;\r\n let adjustBottomPadding = buffer.maxIndexUser !== null && buffer.maxIndex < buffer.maxIndexUser;\r\n let topPaddingHeightAdd = adjustTopPadding ? (buffer.minIndex - buffer.minIndexUser) * averageItemHeight : 0;\r\n let bottomPaddingHeightAdd = adjustBottomPadding ? (buffer.maxIndexUser - buffer.maxIndex) * averageItemHeight : 0;\r\n\r\n // paddings combine adjustment\r\n topPadding.height(topPaddingHeight + topPaddingHeightAdd);\r\n bottomPadding.height(bottomPaddingHeight + bottomPaddingHeightAdd);\r\n },\r\n\r\n onAfterMinIndexSet(topPaddingHeightOld) {\r\n // additional scrollTop adjustment in case of datasource.minIndex external set\r\n if (buffer.minIndexUser !== null && buffer.minIndex > buffer.minIndexUser) {\r\n let diff = topPadding.height() - topPaddingHeightOld;\r\n viewport.scrollTop(viewport.scrollTop() + diff);\r\n while((diff -= viewport.scrollTop()) > 0) {\r\n bottomPadding.height(bottomPadding.height() + diff);\r\n viewport.scrollTop(viewport.scrollTop() + diff);\r\n }\r\n }\r\n },\r\n\r\n onAfterPrepend(updates) {\r\n if (!updates.prepended.length)\r\n return;\r\n const height = buffer.effectiveHeight(updates.prepended);\r\n const paddingHeight = topPadding.height() - height;\r\n if (paddingHeight >= 0) {\r\n topPadding.height(paddingHeight);\r\n }\r\n else {\r\n topPadding.height(0);\r\n viewport.scrollTop(viewport.scrollTop() - paddingHeight);\r\n }\r\n },\r\n\r\n resetTopPadding() {\r\n topPadding.height(0);\r\n topPadding.cache.clear();\r\n },\r\n\r\n resetBottomPadding() {\r\n bottomPadding.height(0);\r\n bottomPadding.cache.clear();\r\n },\r\n\r\n removeCacheItem(item, isTop) {\r\n topPadding.cache.remove(item, isTop);\r\n bottomPadding.cache.remove(item, isTop);\r\n },\r\n\r\n removeItem(item) {\r\n this.removeCacheItem(item);\r\n return buffer.remove(item);\r\n }\r\n });\r\n\r\n return viewport;\r\n}\r\n","class Adapter {\r\n\r\n constructor($scope, $parse, $attr, viewport, buffer, doAdjust, reload) {\r\n this.$parse = $parse;\r\n this.$attr = $attr;\r\n this.viewport = viewport;\r\n this.buffer = buffer;\r\n\r\n this.doAdjust = doAdjust;\r\n this.reload = reload;\r\n\r\n this.isLoading = false;\r\n this.disabled = false;\r\n\r\n const viewportScope = viewport.getScope();\r\n this.startScope = viewportScope.$parent ? viewportScope : $scope;\r\n\r\n this.publicContext = {};\r\n this.assignAdapter($attr.adapter);\r\n this.generatePublicContext();\r\n }\r\n\r\n assignAdapter(adapterAttr) {\r\n if (!adapterAttr || !(adapterAttr = adapterAttr.replace(/^\\s+|\\s+$/gm, ''))) {\r\n return;\r\n }\r\n let adapterOnScope;\r\n\r\n try {\r\n this.$parse(adapterAttr).assign(this.startScope, {});\r\n adapterOnScope = this.$parse(adapterAttr)(this.startScope);\r\n }\r\n catch (error) {\r\n error.message = `Angular ui-scroll Adapter assignment exception.\\n` +\r\n `Can't parse \"${adapterAttr}\" expression.\\n` +\r\n error.message;\r\n throw error;\r\n }\r\n\r\n angular.extend(adapterOnScope, this.publicContext);\r\n this.publicContext = adapterOnScope;\r\n }\r\n\r\n generatePublicContext() {\r\n // these methods will be accessible out of ui-scroll via user defined adapter\r\n const publicMethods = ['reload', 'applyUpdates', 'append', 'prepend', 'isBOF', 'isEOF', 'isEmpty'];\r\n for (let i = publicMethods.length - 1; i >= 0; i--) {\r\n this.publicContext[publicMethods[i]] = this[publicMethods[i]].bind(this);\r\n }\r\n\r\n // these read-only props will be accessible out of ui-scroll via user defined adapter\r\n const publicProps = ['isLoading', 'topVisible', 'topVisibleElement', 'topVisibleScope', 'bottomVisible', 'bottomVisibleElement', 'bottomVisibleScope'];\r\n for (let i = publicProps.length - 1; i >= 0; i--) {\r\n let property, attr = this.$attr[publicProps[i]];\r\n Object.defineProperty(this, publicProps[i], {\r\n get: () => property,\r\n set: (value) => {\r\n property = value;\r\n this.publicContext[publicProps[i]] = value;\r\n if (attr) {\r\n this.$parse(attr).assign(this.startScope, value);\r\n }\r\n }\r\n });\r\n }\r\n\r\n // non-read-only public property\r\n Object.defineProperty(this.publicContext, 'disabled', {\r\n get: () => this.disabled,\r\n set: (value) => (!(this.disabled = value)) ? this.doAdjust() : null\r\n });\r\n }\r\n\r\n loading(value) {\r\n this.isLoading = value;\r\n }\r\n\r\n isBOF() {\r\n return this.buffer.bof;\r\n }\r\n\r\n isEOF() {\r\n return this.buffer.eof;\r\n }\r\n\r\n isEmpty() {\r\n return !this.buffer.length;\r\n }\r\n\r\n append(newItems) {\r\n this.buffer.append(newItems);\r\n this.doAdjust();\r\n this.viewport.clipTop();\r\n this.viewport.clipBottom();\r\n }\r\n\r\n prepend(newItems) {\r\n this.buffer.prepend(newItems);\r\n this.doAdjust();\r\n this.viewport.clipTop();\r\n this.viewport.clipBottom();\r\n }\r\n\r\n applyUpdates(arg1, arg2) {\r\n if (typeof arg1 === 'function') {\r\n this.applyUpdatesFunc(arg1);\r\n } else {\r\n this.applyUpdatesIndex(arg1, arg2);\r\n }\r\n this.doAdjust();\r\n }\r\n\r\n applyUpdatesFunc(cb) {\r\n this.buffer.slice(0).forEach((wrapper) => {\r\n // we need to do it on the buffer clone, because buffer content\r\n // may change as we iterate through\r\n this.applyUpdate(wrapper, cb(wrapper.item, wrapper.scope, wrapper.element));\r\n });\r\n }\r\n\r\n applyUpdatesIndex(index, newItems) {\r\n if (index % 1 !== 0) {\r\n throw new Error('applyUpdates - ' + index + ' is not a valid index (should be an integer)');\r\n }\r\n const _index = index - this.buffer.first;\r\n\r\n // apply updates only within buffer\r\n if (_index >= 0 && _index < this.buffer.length) {\r\n this.applyUpdate(this.buffer[_index], newItems);\r\n }\r\n // out-of-buffer case: deletion may affect Paddings\r\n else if(index >= this.buffer.getAbsMinIndex() && index <= this.buffer.getAbsMaxIndex()) {\r\n if(angular.isArray(newItems) && !newItems.length) {\r\n this.viewport.removeCacheItem(index, index === this.buffer.minIndex);\r\n if(index === this.buffer.getAbsMinIndex()) {\r\n this.buffer.incrementMinIndex();\r\n }\r\n else {\r\n this.buffer.decrementMaxIndex();\r\n }\r\n }\r\n }\r\n }\r\n\r\n applyUpdate(wrapper, newItems) {\r\n if (!angular.isArray(newItems)) {\r\n return;\r\n }\r\n let position = this.buffer.indexOf(wrapper);\r\n if (!newItems.reverse().some(newItem => newItem === wrapper.item)) {\r\n wrapper.op = 'remove';\r\n if(position === 0 && !newItems.length) {\r\n wrapper._op = 'isTop'; // to catch \"first\" edge case on remove\r\n }\r\n }\r\n newItems.forEach((newItem) => {\r\n if (newItem === wrapper.item) {\r\n position--;\r\n } else {\r\n // 3 parameter (isTop) is to catch \"first\" edge case on insert\r\n this.buffer.insert(position + 1, newItem, position === -1);\r\n }\r\n });\r\n }\r\n\r\n calculateProperties() {\r\n let rowTop = null, topHeight = 0;\r\n let topDone = false, bottomDone = false;\r\n const length = this.buffer.length;\r\n\r\n for (let i = 0; i < length; i++) {\r\n const item = this.buffer[i];\r\n const itemTop = item.element.offset().top;\r\n\r\n if (rowTop !== itemTop) { // a new row condition\r\n const itemHeight = item.element.outerHeight(true);\r\n const top = this.viewport.topDataPos() + topHeight + itemHeight;\r\n\r\n if (!topDone && top > this.viewport.topVisiblePos()) {\r\n topDone = true;\r\n this['topVisible'] = item.item;\r\n this['topVisibleElement'] = item.element;\r\n this['topVisibleScope'] = item.scope;\r\n }\r\n if (!bottomDone && (top >= this.viewport.bottomVisiblePos() || (i === length - 1 && this.isEOF()))) {\r\n bottomDone = true;\r\n this['bottomVisible'] = item.item;\r\n this['bottomVisibleElement'] = item.element;\r\n this['bottomVisibleScope'] = item.scope;\r\n }\r\n topHeight += itemHeight;\r\n }\r\n rowTop = itemTop;\r\n\r\n if (topDone && bottomDone) {\r\n break;\r\n }\r\n }\r\n }\r\n\r\n}\r\n\r\nexport default Adapter;\r\n","import JQLiteExtras from './modules/jqLiteExtras';\nimport ElementRoutines from './modules/elementRoutines.js';\nimport ScrollBuffer from './modules/buffer.js';\nimport Viewport from './modules/viewport.js';\nimport Adapter from './modules/adapter.js';\n\nangular.module('ui.scroll', [])\n\n .constant('JQLiteExtras', JQLiteExtras)\n .run(['JQLiteExtras', (JQLiteExtras) => {\n const elt = angular.element;\n !(window.jQuery && elt.fn && elt.fn.jquery) ? (new JQLiteExtras()).registerFor(elt) : null;\n ElementRoutines.addCSSRules();\n }])\n\n .directive('uiScrollViewport', function () {\n return {\n restrict: 'A',\n controller: [\n '$scope',\n '$element',\n function (scope, element) {\n this.container = element;\n this.viewport = element;\n this.scope = scope;\n\n angular.forEach(element.children(), child => {\n if (child.tagName.toLowerCase() === 'tbody') {\n this.viewport = angular.element(child);\n }\n });\n\n return this;\n }\n ]\n };\n })\n\n .directive('uiScroll', [\n '$log',\n '$injector',\n '$rootScope',\n '$timeout',\n '$interval',\n '$q',\n '$parse',\n function (console, $injector, $rootScope, $timeout, $interval, $q, $parse) {\n\n return {\n require: ['?^uiScrollViewport'],\n restrict: 'A',\n transclude: 'element',\n priority: 1000,\n terminal: true,\n link: link\n };\n\n function link($scope, element, $attr, controllers, linker) {\n const match = $attr.uiScroll.match(/^\\s*(\\w+)\\s+in\\s+([(\\w|\\$)\\.]+)\\s*$/);\n if (!match) {\n throw new Error('Expected uiScroll in form of \\'_item_ in _datasource_\\' but got \\'' + $attr.uiScroll + '\\'');\n }\n\n function parseNumber(value, defaultValue, isFloat) {\n if (!isFloat) {\n value = value === null ? defaultValue : Math.floor(value);\n }\n return isNaN(value) ? defaultValue : value;\n }\n\n function parseNumericAttr(value, defaultValue, isFloat) {\n const result = $parse(value)($scope);\n return parseNumber(result, defaultValue, isFloat);\n }\n\n const BUFFER_MIN = 3;\n const BUFFER_DEFAULT = 10;\n const PADDING_MIN = 0.3;\n const PADDING_DEFAULT = 0.5;\n const START_INDEX_DEFAULT = 1;\n const MAX_VIEWPORT_DELAY = 500;\n const VIEWPORT_POLLING_INTERVAL = 50;\n\n let datasource = null;\n const itemName = match[1];\n const datasourceName = match[2];\n const viewportController = controllers[0];\n const bufferSize = Math.max(BUFFER_MIN, parseNumericAttr($attr.bufferSize, BUFFER_DEFAULT));\n const padding = Math.max(PADDING_MIN, parseNumericAttr($attr.padding, PADDING_DEFAULT, true));\n let startIndex = parseNumericAttr($attr.startIndex, START_INDEX_DEFAULT);\n let ridActual = 0; // current data revision id\n let pending = [];\n\n const elementRoutines = new ElementRoutines($injector, $q);\n const buffer = new ScrollBuffer(elementRoutines, bufferSize, startIndex);\n const viewport = new Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding);\n const adapter = new Adapter($scope, $parse, $attr, viewport, buffer, doAdjust, reload);\n\n if (viewportController) {\n viewportController.adapter = adapter;\n }\n\n const isDatasourceValid = () =>\n Object.prototype.toString.call(datasource) === '[object Object]' && typeof datasource.get === 'function';\n\n datasource = $parse(datasourceName)($scope); // try to get datasource on scope\n if (!isDatasourceValid()) {\n datasource = $injector.get(datasourceName); // try to inject datasource as service\n if (!isDatasourceValid()) {\n throw new Error(datasourceName + ' is not a valid datasource');\n }\n }\n\n let onRenderHandlers = [];\n function onRenderHandlersRunner() {\n onRenderHandlers.forEach(handler => handler.run());\n onRenderHandlers = [];\n }\n function persistDatasourceIndex(datasource, propName) {\n let getter;\n // need to postpone min/maxIndexUser processing if the view is empty\n if(angular.isNumber(datasource[propName])) {\n getter = datasource[propName];\n if(angular.isNumber(getter)) {\n onRenderHandlers = onRenderHandlers.filter(handler => handler.id !== propName);\n onRenderHandlers.push({\n id: propName,\n run: () => datasource[propName] = getter\n });\n }\n }\n }\n\n function defineDatasourceIndex(datasource, propName, propUserName) {\n const descriptor = Object.getOwnPropertyDescriptor(datasource, propName);\n if (descriptor && (descriptor.set || descriptor.get)) {\n return;\n }\n let getter;\n persistDatasourceIndex(datasource, propName);\n Object.defineProperty(datasource, propName, {\n set: (value) => {\n getter = value;\n if(pending.length && !buffer.length) {\n persistDatasourceIndex(datasource, propName);\n return;\n }\n buffer[propUserName] = value;\n const topPaddingHeightOld = viewport.topDataPos();\n viewport.adjustPaddings();\n if (propName === 'minIndex') {\n viewport.onAfterMinIndexSet(topPaddingHeightOld);\n }\n },\n get: () => getter\n });\n }\n\n defineDatasourceIndex(datasource, 'minIndex', 'minIndexUser');\n defineDatasourceIndex(datasource, 'maxIndex', 'maxIndexUser');\n\n const fetchNext = (datasource.get.length !== 2) ?\n (success) => datasource.get(buffer.next, bufferSize, success) :\n (success) => {\n datasource.get({\n index: buffer.next,\n append: buffer.length ? buffer[buffer.length - 1].item : void 0,\n count: bufferSize\n }, success);\n };\n\n const fetchPrevious = (datasource.get.length !== 2) ?\n (success) => datasource.get(buffer.first - bufferSize, bufferSize, success) :\n (success) => {\n datasource.get({\n index: buffer.first - bufferSize,\n prepend: buffer.length ? buffer[0].item : void 0,\n count: bufferSize\n }, success);\n };\n\n const initialize = () => {\n let tryCount = 0;\n if(!viewport.applyContainerStyle()) {\n const timer = $interval(() => {\n tryCount++;\n if(viewport.applyContainerStyle()) {\n $interval.cancel(timer);\n doAdjust();\n }\n if(tryCount * VIEWPORT_POLLING_INTERVAL >= MAX_VIEWPORT_DELAY) {\n $interval.cancel(timer);\n throw Error(`ui-scroll directive requires a viewport with non-zero height in ${MAX_VIEWPORT_DELAY}ms`);\n }\n }, VIEWPORT_POLLING_INTERVAL);\n }\n else {\n doAdjust();\n }\n };\n\n /**\n * Build padding elements\n *\n * Calling linker is the only way I found to get access to the tag name of the template\n * to prevent the directive scope from pollution a new scope is created and destroyed\n * right after the builder creation is completed\n */\n linker((clone, scope) => {\n viewport.createPaddingElements(clone[0]);\n // we do not include the clone in the DOM. It means that the nested directives will not\n // be able to reach the parent directives, but in this case it is intentional because we\n // created the clone to access the template tag name\n scope.$destroy();\n clone.remove();\n });\n\n $scope.$on('$destroy', () => {\n unbindEvents();\n viewport.unbind('mousewheel', wheelHandler);\n });\n\n viewport.bind('mousewheel', wheelHandler);\n\n initialize();\n\n /* Private function definitions */\n\n function isInvalid(rid) {\n return (rid && rid !== ridActual) || $scope.$$destroyed;\n }\n\n function bindEvents() {\n viewport.bind('resize', resizeAndScrollHandler);\n viewport.bind('scroll', resizeAndScrollHandler);\n }\n\n function unbindEvents() {\n viewport.unbind('resize', resizeAndScrollHandler);\n viewport.unbind('scroll', resizeAndScrollHandler);\n }\n\n function reload() {\n unbindEvents();\n viewport.resetTopPadding();\n viewport.resetBottomPadding();\n if (arguments.length) {\n startIndex = parseNumber(arguments[0], START_INDEX_DEFAULT, false);\n }\n buffer.reset(startIndex);\n persistDatasourceIndex(datasource, 'minIndex');\n persistDatasourceIndex(datasource, 'maxIndex');\n doAdjust();\n }\n\n function isElementVisible(wrapper) {\n return wrapper.element.height() && wrapper.element[0].offsetParent;\n }\n\n function visibilityWatcher(wrapper) {\n if (isElementVisible(wrapper)) {\n buffer.forEach((item) => {\n if (typeof item.unregisterVisibilityWatcher === 'function') {\n item.unregisterVisibilityWatcher();\n delete item.unregisterVisibilityWatcher;\n }\n });\n if (!pending.length) {\n $timeout(() => doAdjust());\n }\n }\n }\n\n function insertWrapperContent(wrapper, insertAfter) {\n createElement(wrapper, insertAfter, viewport.insertElement);\n if (!isElementVisible(wrapper)) {\n wrapper.unregisterVisibilityWatcher = wrapper.scope.$watch(() => visibilityWatcher(wrapper));\n }\n elementRoutines.hideElement(wrapper); // hide inserted elements before data binding\n }\n\n function createElement(wrapper, insertAfter, insertElement) {\n let promises = null;\n const sibling = (insertAfter > 0) ? buffer[insertAfter - 1].element : undefined;\n linker((clone, scope) => {\n promises = insertElement(clone, sibling);\n wrapper.element = clone;\n wrapper.scope = scope;\n scope[itemName] = wrapper.item;\n });\n // ui-scroll-grid apply\n if (adapter.transform) {\n const tdInitializer = wrapper.scope.uiScrollTdInitializer;\n if (tdInitializer && tdInitializer.linking) {\n adapter.transform(wrapper.scope, wrapper.element);\n } else {\n wrapper.scope.uiScrollTdInitializer = {\n onLink: () => adapter.transform(wrapper.scope, wrapper.element),\n scope: wrapper.scope\n };\n }\n }\n return promises;\n }\n\n function updateDOM() {\n let promises = [];\n const toBePrepended = [];\n const toBeRemoved = [];\n const inserted = [];\n\n buffer.forEach((wrapper, i) => {\n switch (wrapper.op) {\n case 'prepend':\n toBePrepended.unshift(wrapper);\n break;\n case 'append':\n insertWrapperContent(wrapper, i);\n wrapper.op = 'none';\n inserted.push(wrapper);\n break;\n case 'insert':\n promises = promises.concat(createElement(wrapper, i, viewport.insertElementAnimated));\n wrapper.op = 'none';\n inserted.push(wrapper);\n break;\n case 'remove':\n toBeRemoved.push(wrapper);\n }\n });\n\n toBeRemoved.forEach((wrapper) => promises = promises.concat(viewport.removeItem(wrapper)));\n\n if (toBePrepended.length)\n toBePrepended.forEach((wrapper) => {\n insertWrapperContent(wrapper);\n wrapper.op = 'none';\n });\n\n buffer.forEach((item, i) => item.scope.$index = buffer.first + i);\n\n return {\n prepended: toBePrepended,\n removed: toBeRemoved,\n inserted: inserted,\n animated: promises\n };\n\n }\n\n function updatePaddings(rid, updates) {\n // schedule another doAdjust after animation completion\n if (updates.animated.length) {\n $q.all(updates.animated).then(() => {\n viewport.adjustPaddings();\n doAdjust(rid);\n });\n } else {\n viewport.adjustPaddings();\n }\n }\n\n function enqueueFetch(rid, updates) {\n if (viewport.shouldLoadBottom()) {\n if (!updates || buffer.effectiveHeight(updates.inserted) > 0) {\n // this means that at least one item appended in the last batch has height > 0\n if (pending.push(true) === 1) {\n adapter.loading(true);\n fetch(rid);\n }\n }\n } else if (viewport.shouldLoadTop()) {\n if ((!updates || buffer.effectiveHeight(updates.prepended) > 0) || pending[0]) {\n // this means that at least one item appended in the last batch has height > 0\n // pending[0] = true means that previous fetch was appending. We need to force at least one prepend\n // BTW there will always be at least 1 element in the pending array because bottom is fetched first\n if (pending.push(false) === 1) {\n adapter.loading(true);\n fetch(rid);\n }\n }\n }\n }\n\n function processUpdates() {\n const updates = updateDOM();\n\n // We need the item bindings to be processed before we can do adjustments\n !$scope.$$phase && !$rootScope.$$phase && $scope.$digest();\n\n updates.inserted.forEach(w => elementRoutines.showElement(w));\n updates.prepended.forEach(w => elementRoutines.showElement(w));\n return updates;\n }\n\n function doAdjust(rid) {\n if (!rid) { // dismiss pending requests\n pending = [];\n rid = ++ridActual;\n }\n\n const updates = processUpdates();\n\n if (isInvalid(rid)) {\n return;\n }\n\n updatePaddings(rid, updates);\n enqueueFetch(rid);\n\n if (!pending.length) {\n adapter.calculateProperties();\n }\n }\n\n function doAdjustAfterFetch(rid) {\n const updates = processUpdates();\n\n 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1);\n","/*!\n globals: angular, window\n List of used element methods available in JQuery but not in JQuery Lite\n element.before(elem)\n element.height()\n element.outerHeight(true)\n element.height(value) = only for Top/Bottom padding elements\n element.scrollTop()\n element.scrollTop(value)\n */\n\nexport default class JQLiteExtras {\n\n registerFor(element) {\n let convertToPx, css, getStyle, isWindow;\n // angular implementation blows up if elem is the window\n css = angular.element.prototype.css;\n\n element.prototype.css = function (name, value) {\n let self = this;\n let elem = self[0];\n if (!(!elem || elem.nodeType === 3 || elem.nodeType === 8 || !elem.style)) {\n return css.call(self, name, value);\n }\n };\n\n // as defined in angularjs v1.0.5\n isWindow = (obj) => obj && obj.document && obj.location && obj.alert && obj.setInterval;\n\n function scrollTo(self, direction, value) {\n let elem = self[0];\n let [method, prop, preserve] = {\n top: [\n 'scrollTop',\n 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'outerfull' : 'outer');\n },\n outerWidth(option) {\n return getWidthHeight(this[0], 'width', option ? 'outerfull' : 'outer');\n },\n\n /*\n The offset setter method is not implemented\n */\n offset(value) {\n let docElem, win;\n let self = this;\n let box = {\n top: 0,\n left: 0\n };\n let elem = self[0];\n let doc = elem && elem.ownerDocument;\n\n if (arguments.length) {\n if (value === undefined) {\n return self;\n }\n // TODO: implement setter\n throw new Error('offset setter method is not implemented');\n }\n\n if (!doc) {\n return;\n }\n\n docElem = doc.documentElement;\n\n // TODO: Make sure it's not a disconnected DOM node\n\n if (elem.getBoundingClientRect != null) {\n box = elem.getBoundingClientRect();\n }\n\n win = doc.defaultView || doc.parentWindow;\n\n return {\n top: box.top + (win.pageYOffset || docElem.scrollTop) - (docElem.clientTop || 0),\n left: box.left + (win.pageXOffset || docElem.scrollLeft) - (docElem.clientLeft || 0)\n };\n },\n scrollTop(value) {\n return scrollTo(this, 'top', value);\n },\n scrollLeft(value) {\n return scrollTo(this, 'left', value);\n }\n }, (value, key) => {\n if (!element.prototype[key]) {\n return element.prototype[key] = value;\n }\n });\n }\n\n}\n","const hideClassToken = 'ng-ui-scroll-hide';\n\nexport default class ElementRoutines {\n\n static addCSSRules() {\n const selector = '.' + hideClassToken;\n const rules = 'display: none';\n const sheet = document.styleSheets[0];\n let index;\n try {\n index = sheet.cssRules.length;\n } catch (err) {\n index = 0;\n }\n if('insertRule' in sheet) {\n sheet.insertRule(selector + '{' + rules + '}', index);\n }\n else if('addRule' in sheet) {\n sheet.addRule(selector, rules, index);\n }\n }\n\n constructor($injector, $q) {\n this.$animate = ($injector.has && $injector.has('$animate')) ? $injector.get('$animate') : null;\n this.isAngularVersionLessThen1_3 = angular.version.major === 1 && angular.version.minor < 3;\n this.$q = $q;\n }\n\n hideElement(wrapper) {\n wrapper.element.addClass(hideClassToken);\n }\n\n showElement(wrapper) {\n wrapper.element.removeClass(hideClassToken);\n }\n\n insertElement(newElement, previousElement) {\n previousElement.after(newElement);\n return [];\n }\n\n removeElement(wrapper) {\n wrapper.element.remove();\n wrapper.scope.$destroy();\n return [];\n }\n\n insertElementAnimated(newElement, previousElement) {\n if (!this.$animate) {\n return this.insertElement(newElement, previousElement);\n }\n\n if (this.isAngularVersionLessThen1_3) {\n const deferred = this.$q.defer();\n // no need for parent - previous element is never null\n this.$animate.enter(newElement, null, previousElement, () => deferred.resolve());\n\n return [deferred.promise];\n }\n\n // no need for parent - previous element is never null\n return [this.$animate.enter(newElement, null, previousElement)];\n }\n\n removeElementAnimated(wrapper) {\n if (!this.$animate) {\n return this.removeElement(wrapper);\n }\n\n if (this.isAngularVersionLessThen1_3) {\n const deferred = this.$q.defer();\n this.$animate.leave(wrapper.element, () => {\n wrapper.scope.$destroy();\n return deferred.resolve();\n });\n\n return [deferred.promise];\n }\n\n return [(this.$animate.leave(wrapper.element)).then(() => wrapper.scope.$destroy())];\n }\n}","export default function ScrollBuffer(elementRoutines, bufferSize, startIndex, rowHeight) {\n const buffer = Object.create(Array.prototype);\n\n angular.extend(buffer, {\n size: bufferSize,\n\n reset(startIndex) {\n buffer.remove(0, buffer.length);\n buffer.eof = false;\n buffer.bof = false;\n buffer.first = startIndex;\n buffer.next = startIndex;\n buffer.minIndex = startIndex; // Calculated when data is effectively accessed\n buffer.maxIndex = startIndex;\n buffer.minIndexUser = null; // as set by the user (datasource)\n buffer.maxIndexUser = null;\n },\n \n // PHIL: set the new index to be displayed without resettng the sroll and the calculated min/max\n // Note that this actually make sense with a fixed rowHeight when the scroll value can be calculated\n // for a # of rows\n resetStartIndex: function resetStartIndex(startIndex) {\n buffer.remove(0, buffer.length);\n buffer.eof = buffer.eof && startIndex==buffer.maxIndex;\n buffer.bof = buffer.bof && startIndex==buffer.maxIndex;\n buffer.first = startIndex;\n buffer.next = startIndex;\n },\n\n append(items) {\n items.forEach((item) => {\n ++buffer.next;\n buffer.insert('append', item);\n });\n buffer.maxIndex = buffer.eof ? buffer.next - 1 : Math.max(buffer.next - 1, buffer.maxIndex);\n },\n\n prepend(items) {\n items.reverse().forEach((item) => {\n --buffer.first;\n buffer.insert('prepend', item);\n });\n buffer.minIndex = buffer.bof ? buffer.minIndex = buffer.first : Math.min(buffer.first, buffer.minIndex);\n },\n\n /**\n * inserts wrapped element in the buffer\n * the first argument is either operation keyword (see below) or a number for operation 'insert'\n * for insert the number is the index for the buffer element the new one have to be inserted after\n * operations: 'append', 'prepend', 'insert', 'remove', 'update', 'none'\n */\n insert(operation, item, isTop) {\n const wrapper = {\n item: item\n };\n\n if (operation % 1 === 0) {// it is an insert\n wrapper.op = 'insert';\n buffer.splice(operation, 0, wrapper);\n if(isTop) {\n buffer.first--;\n }\n else {\n buffer.next++;\n }\n } else {\n wrapper.op = operation;\n switch (operation) {\n case 'append':\n buffer.push(wrapper);\n break;\n case 'prepend':\n buffer.unshift(wrapper);\n break;\n }\n }\n },\n\n // removes elements from buffer\n remove(arg1, arg2) {\n if (angular.isNumber(arg1)) {\n // removes items from arg1 (including) through arg2 (excluding)\n for (let i = arg1; i < arg2; i++) {\n elementRoutines.removeElement(buffer[i]);\n }\n return buffer.splice(arg1, arg2 - arg1);\n }\n // removes single item(wrapper) from the buffer\n buffer.splice(buffer.indexOf(arg1), 1);\n if(arg1._op === 'isTop' && buffer.first === this.getAbsMinIndex()) {\n this.incrementMinIndex();\n }\n else {\n this.decrementMaxIndex();\n }\n if(arg1._op === 'isTop') {\n buffer.first++;\n }\n else {\n buffer.next--;\n }\n if(!buffer.length) {\n buffer.first = 1;\n buffer.next = 1;\n }\n\n return elementRoutines.removeElementAnimated(arg1);\n },\n\n incrementMinIndex() {\n if(buffer.minIndexUser !== null) {\n if(buffer.minIndex > buffer.minIndexUser) {\n buffer.minIndexUser++;\n return;\n }\n if(buffer.minIndex === buffer.minIndexUser) {\n buffer.minIndexUser++;\n }\n }\n buffer.minIndex++;\n },\n\n decrementMaxIndex() {\n if(buffer.maxIndexUser !== null && buffer.maxIndex <= buffer.maxIndexUser) {\n buffer.maxIndexUser--;\n }\n buffer.maxIndex--;\n },\n\n getAbsMinIndex() {\n if(buffer.minIndexUser !== null) {\n return Math.min(buffer.minIndexUser, buffer.minIndex);\n }\n return buffer.minIndex;\n },\n\n getAbsMaxIndex() {\n if(buffer.maxIndexUser !== null) {\n return Math.max(buffer.maxIndexUser, buffer.maxIndex);\n }\n return buffer.maxIndex;\n },\n\n effectiveHeight(elements) {\n if (!elements.length) {\n return 0;\n }\n let top = Number.MAX_VALUE;\n let bottom = Number.NEGATIVE_INFINITY;\n elements.forEach((wrapper) => {\n if (wrapper.element[0].offsetParent) {\n // element style is not display:none\n top = Math.min(top, wrapper.element.offset().top);\n bottom = Math.max(bottom, wrapper.element.offset().top + (rowHeight || wrapper.element.outerHeight(true)));\n }\n });\n return Math.max(0, bottom - top);\n },\n\n getItems() {\n return buffer.filter(item => item.op === 'none');\n },\n\n getFirstItem() {\n const list = buffer.getItems();\n if (!list.length) {\n return null;\n }\n return list[0].item;\n },\n\n getLastItem() {\n const list = buffer.getItems();\n if (!list.length) {\n return null;\n }\n return list[list.length - 1].item;\n }\n\n });\n\n buffer.reset(startIndex);\n\n return buffer;\n}\n","// Can't just extend the Array, due to Babel does not support built-in classes extending\n// This solution was taken from https://stackoverflow.com/questions/46897414/es6-class-extends-array-workaround-for-es5-babel-transpile\nclass CacheProto {\n add(item) {\n for (let i = this.length - 1; i >= 0; i--) {\n if (this[i].index === item.scope.$index) {\n this[i].height = item.element.outerHeight();\n return;\n }\n }\n this.push({\n index: item.scope.$index,\n height: item.element.outerHeight()\n });\n this.sort((a, b) => ((a.index < b.index) ? -1 : ((a.index > b.index) ? 1 : 0)));\n }\n\n remove(argument, _isTop) {\n const index = argument % 1 === 0 ? argument : argument.scope.$index;\n const isTop = argument % 1 === 0 ? _isTop : argument._op === 'isTop';\n for (let i = this.length - 1; i >= 0; i--) {\n if (this[i].index === index) {\n this.splice(i, 1);\n break;\n }\n }\n if(!isTop) {\n for (let i = this.length - 1; i >= 0; i--) {\n if (this[i].index > index) {\n this[i].index--;\n }\n }\n }\n }\n\n clear() {\n this.length = 0;\n }\n}\n\nfunction Cache() {\n const instance = [];\n instance.push.apply(instance, arguments);\n Object.setPrototypeOf(instance, Cache.prototype);\n return instance;\n}\nCache.prototype = Object.create(Array.prototype);\nObject.getOwnPropertyNames(CacheProto.prototype).forEach(methodName =>\n Cache.prototype[methodName] = CacheProto.prototype[methodName]\n);\n\nfunction generateElement(template) {\n if(template.nodeType !== Node.ELEMENT_NODE) {\n throw new Error('ui-scroll directive requires an Element node for templating the view');\n }\n let element;\n switch (template.tagName.toLowerCase()) {\n case 'dl':\n throw new Error(`ui-scroll directive does not support <${template.tagName}> as a repeating tag: ${template.outerHTML}`);\n case 'tr':\n let table = angular.element('
    ');\n element = table.find('tr');\n break;\n case 'li':\n element = angular.element('
  • ');\n break;\n default:\n element = angular.element('
    ');\n }\n return element;\n}\n\n//\n// Padding represents the dummy element added to both the top and the bottom of the scrolling container\n// It holds the element, as well as a cache for the items (rows) height. In case of a fixed rowHeight, the \n// cache is not used and thus is not created.\n//\nclass Padding {\n constructor(template,useCache) {\n this.element = generateElement(template);\n if(useCache) {\n this.cache = new Cache();\n }\n }\n\n height() {\n // When called with a parameter, this sets the height of the padding\n return this.element.height.apply(this.element, arguments);\n }\n}\n\nexport default Padding;","import Padding from './padding';\n\nexport default function Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding, rowHeight) {\n let topPadding = null;\n let bottomPadding = null;\n const viewport = viewportController && viewportController.viewport ? viewportController.viewport : angular.element(window);\n const container = viewportController && viewportController.container ? viewportController.container : undefined;\n const scope = viewportController && viewportController.scope ? viewportController.scope : $rootScope;\n\n viewport.css({\n 'overflow-anchor': 'none',\n 'overflow-y': 'auto',\n 'display': 'block'\n });\n\n function bufferPadding() {\n return viewport.outerHeight() * padding; // some extra space to initiate preload\n }\n\n // \n // Viewport measurements\n //\n // +----------------+ 0\n // | top |\n // | padding |\n // +----------------+ topDataPos() [=topPadding.height]\n // | not visible |\n // | items |\n // +----------------+ topVisiblePos() [=viewport.scrollTop]\n // | |\n // | visible |\n // | items |\n // | |\n // +----------------+ bottomVisiblePos() [=viewport.scrollTop+viewport.height]\n // | not visible |\n // | items |\n // +----------------+ bottomDataPos() [=scrollHeight-bottomPadding.height]\n // | bottom |\n // | padding |\n // +----------------+ scrollHeight \n //\n // bufferPadding is some extra space we have top & bottom to allow infinite scrolling\n // bufferPadding = viewport.outerHeight() * padding\n //\n // bottomVisiblePos() - topVisiblePos() == viewport.outerHeight()\n \n\n angular.extend(viewport, {\n getScope() {\n return scope;\n },\n\n createPaddingElements(template) {\n topPadding = new Padding(template,!rowHeight);\n bottomPadding = new Padding(template,!rowHeight);\n element.before(topPadding.element);\n element.after(bottomPadding.element);\n topPadding.height(0);\n bottomPadding.height(0);\n },\n\n applyContainerStyle() {\n if (!container) {\n return true;\n }\n if(container !== viewport) {\n viewport.css('height', window.getComputedStyle(container[0]).height);\n }\n return viewport.height() > 0;\n },\n\n bottomDataPos() {\n let scrollHeight = viewport[0].scrollHeight;\n scrollHeight = scrollHeight != null ? scrollHeight : viewport[0].document.documentElement.scrollHeight;\n return scrollHeight - bottomPadding.height();\n },\n\n topDataPos() {\n return topPadding.height();\n },\n\n bottomVisiblePos() {\n return viewport.scrollTop() + viewport.outerHeight();\n },\n\n topVisiblePos() {\n return viewport.scrollTop();\n },\n\n insertElement(e, sibling) {\n return elementRoutines.insertElement(e, sibling || topPadding.element);\n },\n\n insertElementAnimated(e, sibling) {\n return elementRoutines.insertElementAnimated(e, sibling || topPadding.element);\n },\n\n shouldLoadBottom() {\n return !buffer.eof && viewport.bottomDataPos() < viewport.bottomVisiblePos() + bufferPadding();\n },\n\n clipBottom() {\n // clip the invisible items off the bottom\n let overage = 0;\n let emptySpaceHeight = viewport.bottomDataPos() - viewport.bottomVisiblePos() - bufferPadding();\n if(rowHeight) {\n overage = Math.min(buffer.length,Math.floor(emptySpaceHeight/rowHeight));\n } else {\n let itemHeight = 0;\n let overageHeight = 0;\n\n for (let i = buffer.length - 1; i >= 0; i--) {\n itemHeight = buffer[i].element.outerHeight(true);\n if (overageHeight + itemHeight > emptySpaceHeight) {\n break;\n }\n bottomPadding.cache.add(buffer[i]);\n overageHeight += itemHeight;\n overage++;\n }\n }\n\n if (overage > 0) {\n buffer.eof = false;\n buffer.remove(buffer.length - overage, buffer.length);\n buffer.next -= overage;\n viewport.adjustPaddings();\n }\n },\n\n shouldLoadTop() {\n return !buffer.bof && (viewport.topDataPos() > viewport.topVisiblePos() - bufferPadding());\n },\n\n clipTop() {\n // clip the invisible items off the top\n let overage = 0;\n let overageHeight = 0;\n let emptySpaceHeight = viewport.topVisiblePos() - viewport.topDataPos() - bufferPadding();\n if(rowHeight) {\n overage = Math.min(buffer.length,Math.floor(emptySpaceHeight/rowHeight));\n overageHeight = overage * rowHeight;\n } else {\n let itemHeight = 0;\n\n for (let i = 0; i < buffer.length; i++) {\n itemHeight = buffer[i].element.outerHeight(true);\n if (overageHeight + itemHeight > emptySpaceHeight) {\n break;\n }\n topPadding.cache.add(buffer[i]);\n overageHeight += itemHeight;\n overage++;\n }\n }\n\n if (overage > 0) {\n // we need to adjust top padding element before items are removed from top\n // to avoid strange behaviour of scroll bar during remove top items when we are at the very bottom\n topPadding.height(topPadding.height() + overageHeight);\n buffer.bof = false;\n buffer.remove(0, overage);\n buffer.first += overage;\n }\n },\n\n // PHIL: remove all the entries in the buffer without changing the scrollbar, nor the scroll position\n // and update the padding accordingly\n // It is designed to work with non fixed rowHeight, although it will need more tests in this area...\n scrollTo(first) {\n if(rowHeight) {\n first = Math.min(first, buffer.maxIndex);\n first = Math.max(first, buffer.minIndex);\n const min = buffer.getAbsMinIndex(); \n const max = buffer.getAbsMaxIndex();\n // Adjust the paddings before removing the elements to avoid touching the scroll top position\n topPadding.height((first-min)*rowHeight);\n bottomPadding.height(((max+1)-first)*rowHeight);\n buffer.resetStartIndex(first);\n } else {\n buffer.resetStartIndex(first);\n viewport.adjustPaddings();\n } \n },\n \n adjustPaddings() {\n if(rowHeight) {\n const min = buffer.getAbsMinIndex(); \n const max = buffer.getAbsMaxIndex();\n topPadding.height((buffer.first-min)*rowHeight);\n // PHIL: next points to the next possible item, while max is the index of the last one.\n // In order to make them compatible, we should add one to max\n // Also, it looks like buffer is not changing maxIndex when an element is inserted/appended\n // Not sure if this can have a consequence or not....\n bottomPadding.height(((max+1)-buffer.next)*rowHeight);\n return;\n }\n\n if (!buffer.length) {\n return;\n }\n\n // precise heights calculation based on items that are in buffer or that were in buffer once\n const visibleItemsHeight = buffer.reduce((summ, item) => summ + item.element.outerHeight(true), 0);\n let topPaddingHeight = 0, topCount = 0;\n topPadding.cache.forEach(item => {\n if(item.index < buffer.first) {\n topPaddingHeight += item.height;\n topCount++;\n }\n });\n \n let bottomPaddingHeight = 0, bottomCount = 0;\n bottomPadding.cache.forEach(item => {\n if(item.index >= buffer.next) {\n bottomPaddingHeight += item.height;\n bottomCount++;\n }\n });\n \n const totalHeight = visibleItemsHeight + topPaddingHeight + bottomPaddingHeight;\n const averageItemHeight = totalHeight / (topCount + bottomCount + buffer.length); \n\n // average heights calculation, items that have never been reached\n let adjustTopPadding = buffer.minIndexUser !== null && buffer.minIndex > buffer.minIndexUser;\n let adjustBottomPadding = buffer.maxIndexUser !== null && buffer.maxIndex < buffer.maxIndexUser;\n let topPaddingHeightAdd = adjustTopPadding ? (buffer.minIndex - buffer.minIndexUser) * averageItemHeight : 0;\n let bottomPaddingHeightAdd = adjustBottomPadding ? (buffer.maxIndexUser - buffer.maxIndex) * averageItemHeight : 0;\n\n // paddings combine adjustment\n topPadding.height(topPaddingHeight + topPaddingHeightAdd);\n bottomPadding.height(bottomPaddingHeight + bottomPaddingHeightAdd);\n },\n\n onAfterMinIndexSet(topPaddingHeightOld) {\n // additional scrollTop adjustment in case of datasource.minIndex external set\n if (buffer.minIndexUser !== null && buffer.minIndex > buffer.minIndexUser) {\n let diff = topPadding.height() - topPaddingHeightOld;\n viewport.scrollTop(viewport.scrollTop() + diff);\n while((diff -= viewport.scrollTop()) > 0) {\n bottomPadding.height(bottomPadding.height() + diff);\n viewport.scrollTop(viewport.scrollTop() + diff);\n }\n }\n },\n\n onAfterPrepend(updates) {\n if (!updates.prepended.length)\n return;\n const height = buffer.effectiveHeight(updates.prepended);\n const paddingHeight = topPadding.height() - height;\n if (paddingHeight >= 0) {\n topPadding.height(paddingHeight);\n }\n else {\n topPadding.height(0);\n viewport.scrollTop(viewport.scrollTop() - paddingHeight);\n }\n },\n\n resetTopPadding() {\n topPadding.height(0);\n if(topPadding.cache) {\n topPadding.cache.clear();\n }\n },\n\n resetBottomPadding() {\n bottomPadding.height(0);\n if(bottomPadding.cache) {\n bottomPadding.cache.clear();\n }\n },\n\n removeCacheItem(item, isTop) {\n if(topPadding.cache) {\n topPadding.cache.remove(item, isTop);\n }\n if(bottomPadding.cache) {\n bottomPadding.cache.remove(item, isTop);\n }\n },\n\n removeItem(item) {\n this.removeCacheItem(item);\n return buffer.remove(item);\n }\n });\n\n return viewport;\n}\n","class Adapter {\n\n constructor($scope, $parse, $attr, viewport, buffer, doAdjust, reload) {\n this.$parse = $parse;\n this.$attr = $attr;\n this.viewport = viewport;\n this.buffer = buffer;\n\n this.doAdjust = doAdjust;\n this.reload = reload;\n\n this.isLoading = false;\n this.disabled = false;\n\n const viewportScope = viewport.getScope();\n this.startScope = viewportScope.$parent ? viewportScope : $scope;\n\n this.publicContext = {};\n this.assignAdapter($attr.adapter);\n this.generatePublicContext();\n }\n\n assignAdapter(adapterAttr) {\n if (!adapterAttr || !(adapterAttr = adapterAttr.replace(/^\\s+|\\s+$/gm, ''))) {\n return;\n }\n let adapterOnScope;\n\n try {\n this.$parse(adapterAttr).assign(this.startScope, {});\n adapterOnScope = this.$parse(adapterAttr)(this.startScope);\n }\n catch (error) {\n error.message = `Angular ui-scroll Adapter assignment exception.\\n` +\n `Can't parse \"${adapterAttr}\" expression.\\n` +\n error.message;\n throw error;\n }\n\n angular.extend(adapterOnScope, this.publicContext);\n this.publicContext = adapterOnScope;\n }\n\n generatePublicContext() {\n // these methods will be accessible out of ui-scroll via user defined adapter\n const publicMethods = ['reload', 'applyUpdates', 'append', 'prepend', 'isBOF', 'isEOF', 'isEmpty'];\n for (let i = publicMethods.length - 1; i >= 0; i--) {\n this.publicContext[publicMethods[i]] = this[publicMethods[i]].bind(this);\n }\n\n // these read-only props will be accessible out of ui-scroll via user defined adapter\n const publicProps = ['isLoading', 'topVisible', 'topVisibleElement', 'topVisibleScope', 'bottomVisible', 'bottomVisibleElement', 'bottomVisibleScope'];\n for (let i = publicProps.length - 1; i >= 0; i--) {\n let property, attr = this.$attr[publicProps[i]];\n Object.defineProperty(this, publicProps[i], {\n get: () => property,\n set: (value) => {\n property = value;\n this.publicContext[publicProps[i]] = value;\n if (attr) {\n this.$parse(attr).assign(this.startScope, value);\n }\n }\n });\n }\n\n // read-only immediately calculated public properties\n const publicPropsImmediate = ['bufferFirst', 'bufferLast', 'bufferLength'];\n for (let i = publicPropsImmediate.length - 1; i >= 0; i--) {\n Object.defineProperty(this.publicContext, publicPropsImmediate[i], {\n get: () => this[publicPropsImmediate[i]]\n });\n }\n\n // non-read-only public property\n Object.defineProperty(this.publicContext, 'disabled', {\n get: () => this.disabled,\n set: (value) => (!(this.disabled = value)) ? this.doAdjust() : null\n });\n }\n\n loading(value) {\n this.isLoading = value;\n }\n\n isBOF() {\n return this.buffer.bof;\n }\n\n isEOF() {\n return this.buffer.eof;\n }\n\n isEmpty() {\n return !this.buffer.length;\n }\n\n get bufferLength() {\n return this.buffer.getItems().length;\n }\n\n get bufferFirst() {\n return this.buffer.getFirstItem();\n }\n\n get bufferLast() {\n return this.buffer.getLastItem();\n }\n\n append(newItems) {\n this.buffer.append(newItems);\n this.doAdjust();\n this.viewport.clipTop();\n this.viewport.clipBottom();\n }\n\n prepend(newItems) {\n this.buffer.prepend(newItems);\n this.doAdjust();\n this.viewport.clipTop();\n this.viewport.clipBottom();\n }\n\n applyUpdates(arg1, arg2, arg3) {\n if (typeof arg1 === 'function') {\n this.applyUpdatesFunc(arg1, arg2);\n } else {\n this.applyUpdatesIndex(arg1, arg2, arg3);\n }\n this.doAdjust();\n }\n\n applyUpdatesFunc(cb, options) {\n this.buffer.slice(0).forEach((wrapper) => {\n // we need to do it on the buffer clone, because buffer content\n // may change as we iterate through\n this.applyUpdate(wrapper, cb(wrapper.item, wrapper.scope, wrapper.element), options);\n });\n }\n\n applyUpdatesIndex(index, newItems, options = {}) {\n if (index % 1 !== 0) {\n throw new Error('applyUpdates - ' + index + ' is not a valid index (should be an integer)');\n }\n const _index = index - this.buffer.first;\n\n // apply updates only within buffer\n if (_index >= 0 && _index < this.buffer.length) {\n this.applyUpdate(this.buffer[_index], newItems, options);\n }\n // out-of-buffer case: deletion may affect Paddings\n else if(index >= this.buffer.getAbsMinIndex() && index <= this.buffer.getAbsMaxIndex()) {\n if(angular.isArray(newItems) && !newItems.length) {\n this.viewport.removeCacheItem(index, !options.immutableTop && index === this.buffer.minIndex);\n if (!options.immutableTop && index === this.buffer.getAbsMinIndex()) {\n this.buffer.incrementMinIndex();\n }\n else {\n this.buffer.decrementMaxIndex();\n }\n }\n }\n }\n\n applyUpdate(wrapper, newItems, options = {}) {\n if (!angular.isArray(newItems)) {\n return;\n }\n let position = this.buffer.indexOf(wrapper);\n if (!newItems.reverse().some(newItem => newItem === wrapper.item)) {\n wrapper.op = 'remove';\n if (!options.immutableTop && position === 0 && !newItems.length) {\n wrapper._op = 'isTop'; // to catch \"first\" edge case on remove\n }\n }\n newItems.forEach((newItem) => {\n if (newItem === wrapper.item) {\n position--;\n } else {\n // 3 parameter (isTop) is to catch \"first\" edge case on insert\n this.buffer.insert(position + 1, newItem, !options.immutableTop && position === -1);\n }\n });\n }\n\n calculateProperties() {\n let rowTop = null, topHeight = 0;\n let topDone = false, bottomDone = false;\n const length = this.buffer.length;\n\n for (let i = 0; i < length; i++) {\n const item = this.buffer[i];\n const itemTop = item.element.offset().top;\n\n if (rowTop !== itemTop) { // a new row condition\n const itemHeight = item.element.outerHeight(true);\n const top = this.viewport.topDataPos() + topHeight + itemHeight;\n\n if (!topDone && top > this.viewport.topVisiblePos()) {\n topDone = true;\n this['topVisible'] = item.item;\n this['topVisibleElement'] = item.element;\n this['topVisibleScope'] = item.scope;\n }\n if (!bottomDone && (top >= this.viewport.bottomVisiblePos() || (i === length - 1 && this.isEOF()))) {\n bottomDone = true;\n this['bottomVisible'] = item.item;\n this['bottomVisibleElement'] = item.element;\n this['bottomVisibleScope'] = item.scope;\n }\n topHeight += itemHeight;\n }\n rowTop = itemTop;\n\n if (topDone && bottomDone) {\n break;\n }\n }\n }\n\n}\n\nexport default Adapter;\n","import JQLiteExtras from './modules/jqLiteExtras';\nimport ElementRoutines from './modules/elementRoutines.js';\nimport ScrollBuffer from './modules/buffer.js';\nimport Viewport from './modules/viewport.js';\nimport Adapter from './modules/adapter.js';\n\nangular.module('ui.scroll', [])\n\n .constant('JQLiteExtras', JQLiteExtras)\n .run(['JQLiteExtras', (JQLiteExtras) => {\n const elt = angular.element;\n !(window.jQuery && elt.fn && elt.fn.jquery) ? (new JQLiteExtras()).registerFor(elt) : null;\n ElementRoutines.addCSSRules();\n }])\n\n .directive('uiScrollViewport', function () {\n return {\n restrict: 'A',\n controller: [\n '$scope',\n '$element',\n function (scope, element) {\n this.container = element;\n this.viewport = element;\n this.scope = scope;\n\n angular.forEach(element.children(), child => {\n if (child.tagName.toLowerCase() === 'tbody') {\n this.viewport = angular.element(child);\n }\n });\n\n return this;\n }\n ]\n };\n })\n\n .directive('uiScroll', [\n '$log',\n '$injector',\n '$rootScope',\n '$timeout',\n '$interval',\n '$q',\n '$parse',\n function (console, $injector, $rootScope, $timeout, $interval, $q, $parse) {\n\n return {\n require: ['?^uiScrollViewport'],\n restrict: 'A',\n transclude: 'element',\n priority: 1000,\n terminal: true,\n link: link\n };\n\n function link($scope, element, $attr, controllers, linker) {\n const match = $attr.uiScroll.match(/^\\s*(\\w+)\\s+in\\s+([(\\w|\\$)\\.]+)\\s*$/);\n if (!match) {\n throw new Error('Expected uiScroll in form of \\'_item_ in _datasource_\\' but got \\'' + $attr.uiScroll + '\\'');\n }\n\n function parseNumber(value, defaultValue, isFloat) {\n if (!isFloat) {\n value = value === null ? defaultValue : Math.floor(value);\n }\n return isNaN(value) ? defaultValue : value;\n }\n\n function parseNumericAttr(value, defaultValue, isFloat) {\n const result = $parse(value)($scope);\n return parseNumber(result, defaultValue, isFloat);\n }\n\n const BUFFER_MIN = 3; // Minimum size of the data source request\n const BUFFER_DEFAULT = 10; // Default datasource request size\n const PADDING_MIN = 0.3; // Mininum # of rows in the padding area\n const PADDING_DEFAULT = 0.5; // Default # of rows in the padding area\n const START_INDEX_DEFAULT = 1; // Default start index when requestng the first data block\n const MAX_VIEWPORT_DELAY = 500; // Max time wait (ms) to get the viewport with an height>0\n const VIEWPORT_POLLING_INTERVAL = 50; // Interval used to check the initial viewport height\n\n let datasource = null;\n const itemName = match[1]; // Name of the index variable to publish\n const datasourceName = match[2]; // Name of the datasource to request the rows from\n const viewportController = controllers[0]; // ViewportController, as specified in the require option (http://websystique.com/angularjs/angularjs-custom-directives-controllers-require-option-guide/)\n const bufferSize = Math.max(BUFFER_MIN, parseNumericAttr($attr.bufferSize, BUFFER_DEFAULT)); \n const padding = Math.max(PADDING_MIN, parseNumericAttr($attr.padding, PADDING_DEFAULT, true));\n let startIndex = parseNumericAttr($attr.startIndex, START_INDEX_DEFAULT);\n\n // PHIL: Provide a fixed row height\n // \n const rowHeight = parseNumericAttr($attr.rowHeight, null, false);\n\n // PHIL: Read the visibility watch option, true by default\n const allowVisibilityWatch = $attr.allowVisibilityWatch!=='false';\n\n // Revision IDs\n // \n let ridActual = 0; // current data revision id\n let pending = [];\n\n const elementRoutines = new ElementRoutines($injector, $q);\n const buffer = new ScrollBuffer(elementRoutines, bufferSize, startIndex, rowHeight);\n const viewport = new Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding, rowHeight);\n const adapter = new Adapter($scope, $parse, $attr, viewport, buffer, doAdjust, reload);\n\n if (viewportController) {\n viewportController.adapter = adapter;\n }\n\n // Currently, we only debounce the scroll events when a fixed rowHeight is provided\n // as the unit tests will have to be adapted to support this feature\n let scPreviousScrollTop=-1;\n\n const isDatasourceValid = () =>\n Object.prototype.toString.call(datasource) === '[object Object]' && typeof datasource.get === 'function';\n\n datasource = $parse(datasourceName)($scope); // try to get datasource on scope\n if (!isDatasourceValid()) {\n datasource = $injector.get(datasourceName); // try to inject datasource as service\n if (!isDatasourceValid()) {\n throw new Error(datasourceName + ' is not a valid datasource');\n }\n }\n\n let onRenderHandlers = [];\n function onRenderHandlersRunner() {\n onRenderHandlers.forEach(handler => handler.run());\n onRenderHandlers = [];\n }\n function persistDatasourceIndex(datasource, propName) {\n let getter;\n // need to postpone min/maxIndexUser processing if the view is empty\n if(angular.isNumber(datasource[propName])) {\n getter = datasource[propName];\n if(angular.isNumber(getter)) {\n onRenderHandlers = onRenderHandlers.filter(handler => handler.id !== propName);\n onRenderHandlers.push({\n id: propName,\n run: () => datasource[propName] = getter\n });\n }\n }\n }\n\n function defineDatasourceIndex(datasource, propName, propUserName) {\n const descriptor = Object.getOwnPropertyDescriptor(datasource, propName);\n if (descriptor && (descriptor.set || descriptor.get)) {\n return;\n }\n let getter;\n persistDatasourceIndex(datasource, propName);\n Object.defineProperty(datasource, propName, {\n set: (value) => {\n getter = value;\n if(pending.length && !buffer.length) {\n persistDatasourceIndex(datasource, propName);\n return;\n }\n buffer[propUserName] = value;\n const topPaddingHeightOld = viewport.topDataPos();\n viewport.adjustPaddings();\n if (propName === 'minIndex') {\n viewport.onAfterMinIndexSet(topPaddingHeightOld);\n }\n },\n get: () => getter\n });\n }\n\n defineDatasourceIndex(datasource, 'minIndex', 'minIndexUser');\n defineDatasourceIndex(datasource, 'maxIndex', 'maxIndexUser');\n\n const fetchNext = (datasource.get.length !== 2) ?\n (success) => datasource.get(buffer.next, bufferSize, success) :\n (success) => {\n datasource.get({\n index: buffer.next,\n append: buffer.length ? buffer[buffer.length - 1].item : void 0,\n count: bufferSize\n }, success);\n };\n\n const fetchPrevious = (datasource.get.length !== 2) ?\n (success) => datasource.get(buffer.first - bufferSize, bufferSize, success) :\n (success) => {\n datasource.get({\n index: buffer.first - bufferSize,\n prepend: buffer.length ? buffer[0].item : void 0,\n count: bufferSize\n }, success);\n };\n\n const initialize = () => {\n let tryCount = 0;\n if(!viewport.applyContainerStyle()) {\n const timer = $interval(() => {\n tryCount++;\n if(viewport.applyContainerStyle()) {\n $interval.cancel(timer);\n doAdjust();\n }\n if(tryCount * VIEWPORT_POLLING_INTERVAL >= MAX_VIEWPORT_DELAY) {\n $interval.cancel(timer);\n throw Error(`ui-scroll directive requires a viewport with non-zero height in ${MAX_VIEWPORT_DELAY}ms`);\n }\n }, VIEWPORT_POLLING_INTERVAL);\n }\n else {\n doAdjust();\n }\n };\n\n /**\n * Build padding elements\n *\n * Calling linker is the only way I found to get access to the tag name of the template\n * to prevent the directive scope from pollution a new scope is created and destroyed\n * right after the builder creation is completed\n */\n linker((clone, scope) => {\n viewport.createPaddingElements(clone[0]);\n // we do not include the clone in the DOM. It means that the nested directives will not\n // be able to reach the parent directives, but in this case it is intentional because we\n // created the clone to access the template tag name\n scope.$destroy();\n clone.remove();\n });\n\n $scope.$on('$destroy', () => {\n unbindEvents();\n viewport.unbind('mousewheel', wheelHandler);\n });\n\n viewport.bind('mousewheel', wheelHandler);\n\n initialize();\n\n /* Private function definitions */\n\n function isInvalid(rid) {\n return (rid && rid !== ridActual) || $scope.$$destroyed;\n }\n\n function bindEvents() {\n viewport.bind('resize', resizeAndScrollHandler);\n viewport.bind('scroll', resizeAndScrollHandler);\n // If a scroll event happened while the handler was not bounded, emit the scroll\n if(isPendingScroll()) {\n // Do it immediately\n _resizeAndScrollHandler();\n }\n }\n\n function unbindEvents() {\n viewport.unbind('resize', resizeAndScrollHandler);\n viewport.unbind('scroll', resizeAndScrollHandler);\n }\n\n function reload() {\n unbindEvents();\n viewport.resetTopPadding();\n viewport.resetBottomPadding();\n if (arguments.length) {\n startIndex = parseNumber(arguments[0], START_INDEX_DEFAULT, false);\n }\n buffer.reset(startIndex);\n scPreviousScrollTop = -1; // Avoid isScrollPending() to be true\n persistDatasourceIndex(datasource, 'minIndex');\n persistDatasourceIndex(datasource, 'maxIndex');\n doAdjust();\n }\n\n function scrollTo(first) {\n unbindEvents();\n viewport.scrollTo(first);\n doAdjust();\n }\n\n function isElementVisible(wrapper) {\n return (rowHeight || wrapper.element.height()) && wrapper.element[0].offsetParent;\n }\n\n function visibilityWatcher(wrapper) {\n if (isElementVisible(wrapper)) {\n buffer.forEach((item) => {\n if (typeof item.unregisterVisibilityWatcher === 'function') {\n item.unregisterVisibilityWatcher();\n delete item.unregisterVisibilityWatcher;\n }\n });\n if (!pending.length) {\n $timeout(() => doAdjust());\n }\n }\n }\n\n function insertWrapperContent(wrapper, insertAfter) {\n createElement(wrapper, insertAfter, viewport.insertElement);\n if (allowVisibilityWatch && !isElementVisible(wrapper)) {\n wrapper.unregisterVisibilityWatcher = wrapper.scope.$watch(() => visibilityWatcher(wrapper));\n }\n if (allowVisibilityWatch) {\n elementRoutines.hideElement(wrapper); // hide inserted elements before data binding\n }\n }\n\n function createElement(wrapper, insertAfter, insertElement) {\n let promises = null;\n const sibling = (insertAfter > 0) ? buffer[insertAfter - 1].element : undefined;\n linker((clone, scope) => {\n promises = insertElement(clone, sibling);\n wrapper.element = clone;\n wrapper.scope = scope;\n scope[itemName] = wrapper.item;\n });\n // ui-scroll-grid apply\n if (adapter.transform) {\n const tdInitializer = wrapper.scope.uiScrollTdInitializer;\n if (tdInitializer && tdInitializer.linking) {\n adapter.transform(wrapper.scope, wrapper.element);\n } else {\n wrapper.scope.uiScrollTdInitializer = {\n onLink: () => adapter.transform(wrapper.scope, wrapper.element),\n scope: wrapper.scope\n };\n }\n }\n return promises;\n }\n\n function updateDOM() {\n let promises = [];\n const toBePrepended = [];\n const toBeRemoved = [];\n const inserted = [];\n\n buffer.forEach((wrapper, i) => {\n switch (wrapper.op) {\n case 'prepend':\n toBePrepended.unshift(wrapper);\n break;\n case 'append':\n insertWrapperContent(wrapper, i);\n wrapper.op = 'none';\n inserted.push(wrapper);\n break;\n case 'insert':\n promises = promises.concat(createElement(wrapper, i, viewport.insertElementAnimated));\n wrapper.op = 'none';\n inserted.push(wrapper);\n break;\n case 'remove':\n toBeRemoved.push(wrapper);\n }\n });\n\n toBeRemoved.forEach((wrapper) => promises = promises.concat(viewport.removeItem(wrapper)));\n\n if (toBePrepended.length)\n toBePrepended.forEach((wrapper) => {\n insertWrapperContent(wrapper);\n wrapper.op = 'none';\n });\n\n buffer.forEach((item, i) => item.scope.$index = buffer.first + i);\n\n return {\n prepended: toBePrepended,\n removed: toBeRemoved,\n inserted: inserted,\n animated: promises\n };\n\n }\n\n // Adjust the viewport paddings\n // \n function updatePaddings(rid, updates) {\n // schedule another doAdjust after animation completion\n if (updates.animated.length) {\n $q.all(updates.animated).then(() => {\n viewport.adjustPaddings();\n doAdjust(rid);\n });\n } else {\n viewport.adjustPaddings();\n }\n }\n\n function enqueueFetch(rid, updates) {\n // If there is a scroll pending, we don't enqueue the fetch as the scroll might be an absolute scroll\n // So we don't need to load top or bottom\n // This happens when there is a scroll frenzi, and the $digest is slow enough, so it stacks the calls without\n // giving a chance to the scroll event to be emitted and processed.\n if(isPendingScroll()) {\n return;\n }\n\n if (viewport.shouldLoadBottom()) {\n if (!updates || buffer.effectiveHeight(updates.inserted) > 0) {\n // this means that at least one item appended in the last batch has height > 0\n if (pending.push(true) === 1) {\n adapter.loading(true);\n fetch(rid);\n }\n }\n } else if (viewport.shouldLoadTop()) {\n if ((!updates || buffer.effectiveHeight(updates.prepended) > 0) || pending[0]) {\n // this means that at least one item appended in the last batch has height > 0\n // pending[0] = true means that previous fetch was appending. We need to force at least one prepend\n // BTW there will always be at least 1 element in the pending array because bottom is fetched first\n if (pending.push(false) === 1) {\n adapter.loading(true);\n fetch(rid);\n }\n }\n }\n }\n\n function processUpdates() {\n const updates = updateDOM();\n\n // We need the item bindings to be processed before we can do adjustments\n // If there are no changes and the row-height is static, then ignore it!\n const changes = updates.animated.length+updates.inserted.length+updates.prepended.length+updates.removed.length;\n if(changes || !rowHeight) {\n !$scope.$$phase && !$rootScope.$$phase && $scope.$digest();\n }\n\n if (allowVisibilityWatch) {\n updates.inserted.forEach(w => elementRoutines.showElement(w));\n updates.prepended.forEach(w => elementRoutines.showElement(w));\n }\n\n return updates;\n }\n\n function doAdjust(rid) {\n if (!rid) { // dismiss pending requests\n pending = [];\n rid = ++ridActual;\n }\n\n const updates = processUpdates();\n\n if (isInvalid(rid)) {\n return;\n }\n\n updatePaddings(rid, updates);\n enqueueFetch(rid);\n\n if (!pending.length) {\n adapter.calculateProperties();\n }\n }\n\n function doAdjustAfterFetch(rid) {\n const updates = processUpdates();\n\n viewport.onAfterPrepend(updates);\n\n if (isInvalid(rid)) {\n return;\n }\n\n updatePaddings(rid, updates);\n onRenderHandlersRunner();\n enqueueFetch(rid, updates);\n pending.shift();\n\n if (pending.length)\n fetch(rid);\n else {\n adapter.loading(false);\n bindEvents();\n adapter.calculateProperties();\n }\n }\n\n function fetch(rid) {\n if (pending[0]) {// scrolling down\n if (buffer.length && !viewport.shouldLoadBottom()) {\n doAdjustAfterFetch(rid);\n } else {\n fetchNext((result) => {\n if (isInvalid(rid)) {\n return;\n }\n\n if (result.length < bufferSize) {\n buffer.eof = true;\n }\n\n if (result.length > 0) {\n viewport.clipTop();\n buffer.append(result);\n }\n\n doAdjustAfterFetch(rid);\n });\n }\n } else { // scrolling up\n if (buffer.length && !viewport.shouldLoadTop()) {\n doAdjustAfterFetch(rid);\n } else {\n fetchPrevious((result) => {\n if (isInvalid(rid)) {\n return;\n }\n\n if (result.length < bufferSize) {\n buffer.bof = true;\n // log 'bof is reached'\n }\n\n if (result.length > 0) {\n if (buffer.length) {\n viewport.clipBottom();\n }\n buffer.prepend(result);\n }\n\n doAdjustAfterFetch(rid);\n });\n }\n }\n }\n \n function isPendingScroll() {\n if(rowHeight) {\n // Maybe the scroll changed but the event has *not* yet being dispatched\n // because of the $digest running and taking to long\n var sc = viewport.scrollTop();\n if(sc!=scPreviousScrollTop && scPreviousScrollTop>=0) {\n return true;\n }\n }\n return false;\n }\n\n // Deboucing the scroll events avois intermediate $digest when scrolling fast\n let scTimer;\n function resizeAndScrollHandler() {\n if (rowHeight) {\n if (scTimer) clearTimeout(scTimer);\n scTimer = setTimeout(_resizeAndScrollHandler, 20);\n } else {\n _resizeAndScrollHandler();\n }\n }\n\n function _resizeAndScrollHandler() {\n if (!$rootScope.$$phase && !adapter.isLoading && !adapter.disabled) {\n // Absolute positioning currently only works when a fixed rowHeight is provided\n // We might isolate the averegaRowHeight calculation in the viewport to provide an estimate\n // and provide a reasonable behavior with variable height as well\n if(rowHeight) {\n scPreviousScrollTop = viewport.scrollTop();\n let newFirst = Math.floor(viewport.scrollTop() / rowHeight) + buffer.minIndex;\n newFirst = Math.max(buffer.minIndex, Math.min(buffer.maxIndex,newFirst)); // Bound the scroll\n if (newFirst=buffer.next) {\n scrollTo(newFirst);\n return;\n } \n }\n\n enqueueFetch(ridActual);\n\n if (pending.length) {\n unbindEvents();\n } else {\n adapter.calculateProperties();\n if(!rowHeight) {\n // The digest is forced to calculate the height, which is not necessary when the height is knowm\n !$scope.$$phase && $scope.$digest();\n }\n }\n }\n }\n\n function wheelHandler(event) {\n if (!adapter.disabled) {\n const scrollTop = viewport[0].scrollTop;\n const yMax = viewport[0].scrollHeight - viewport[0].clientHeight;\n\n if ((scrollTop === 0 && !buffer.bof) || (scrollTop === yMax && !buffer.eof)) {\n event.preventDefault();\n }\n }\n }\n }\n\n }\n ]);\n"],"sourceRoot":""} \ No newline at end of file diff --git a/dist/ui-scroll.min.js b/dist/ui-scroll.min.js index 44924b52..68eb950c 100644 --- a/dist/ui-scroll.min.js +++ b/dist/ui-scroll.min.js @@ -1,2 +1,2 @@ -!function(n){var r={};function i(e){if(r[e])return r[e].exports;var t=r[e]={i:e,l:!1,exports:{}};return n[e].call(t.exports,t,t.exports,i),t.l=!0,t.exports}i.m=n,i.c=r,i.d=function(e,t,n){i.o(e,t)||Object.defineProperty(e,t,{enumerable:!0,get:n})},i.r=function(e){"undefined"!=typeof Symbol&&Symbol.toStringTag&&Object.defineProperty(e,Symbol.toStringTag,{value:"Module"}),Object.defineProperty(e,"__esModule",{value:!0})},i.t=function(t,e){if(1&e&&(t=i(t)),8&e)return t;if(4&e&&"object"==typeof t&&t&&t.__esModule)return t;var n=Object.create(null);if(i.r(n),Object.defineProperty(n,"default",{enumerable:!0,value:t}),2&e&&"string"!=typeof t)for(var r in t)i.d(n,r,function(e){return t[e]}.bind(null,r));return n},i.n=function(e){var t=e&&e.__esModule?function(){return e.default}:function(){return e};return i.d(t,"a",t),t},i.o=function(e,t){return Object.prototype.hasOwnProperty.call(e,t)},i.p="",i(i.s=1)}([,function(e,t,n){"use strict";function g(e,t){return function(e){if(Array.isArray(e))return e}(e)||function(e,t){var n=[],r=!0,i=!1,o=void 0;try{for(var a,s=e[Symbol.iterator]();!(r=(a=s.next()).done)&&(n.push(a.value),!t||n.length!==t);r=!0);}catch(e){i=!0,o=e}finally{try{r||null==s.return||s.return()}finally{if(i)throw o}}return n}(e,t)||function(){throw new TypeError("Invalid attempt to destructure non-iterable instance")}()}function i(e,t){for(var n=0;ni.minIndexUser)return void i.minIndexUser++;i.minIndex===i.minIndexUser&&i.minIndexUser++}i.minIndex++},decrementMaxIndex:function(){null!==i.maxIndexUser&&i.maxIndex<=i.maxIndexUser&&i.maxIndexUser--,i.maxIndex--},getAbsMinIndex:function(){return null!==i.minIndexUser?Math.min(i.minIndexUser,i.minIndex):i.minIndex},getAbsMaxIndex:function(){return null!==i.maxIndexUser?Math.max(i.maxIndexUser,i.maxIndex):i.maxIndex},effectiveHeight:function(e){if(!e.length)return 0;var t=Number.MAX_VALUE,n=Number.NEGATIVE_INFINITY;return e.forEach(function(e){e.element[0].offsetParent&&(t=Math.min(t,e.element.offset().top),n=Math.max(n,e.element.offset().top+e.element.outerHeight(!0)))}),Math.max(0,n-t)}}),i.reset(t),i}function u(e,t){if(!(e instanceof t))throw new TypeError("Cannot call a class as a function")}function l(e,t){for(var n=0;nt.index?1:0})}},{key:"remove",value:function(e,t){for(var n=e%1==0?e:e.scope.$index,r=e%1==0?t:"isTop"===e._op,i=this.length-1;0<=i;i--)if(this[i].index===n){this.splice(i,1);break}if(!r)for(var o=this.length-1;0<=o;o--)this[o].index>n&&this[o].index--}},{key:"clear",value:function(){this.length=0}}]),e}();function d(){var e=[];return e.push.apply(e,arguments),Object.setPrototypeOf(e,d.prototype),e}d.prototype=Object.create(Array.prototype),Object.getOwnPropertyNames(f.prototype).forEach(function(e){return d.prototype[e]=f.prototype[e]});var h=function(){function t(e){u(this,t),this.element=function(e){if(e.nodeType!==Node.ELEMENT_NODE)throw new Error("ui-scroll directive requires an Element node for templating the view");var t;switch(e.tagName.toLowerCase()){case"dl":throw new Error("ui-scroll directive does not support <".concat(e.tagName,"> as a repeating tag: ").concat(e.outerHTML));case"tr":t=angular.element("
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\t\t__webpack_require__.r(ns);\n \t\tObject.defineProperty(ns, 'default', { enumerable: true, value: value });\n \t\tif(mode & 2 && typeof value != 'string') for(var key in value) __webpack_require__.d(ns, key, function(key) { return value[key]; }.bind(null, key));\n \t\treturn ns;\n \t};\n\n \t// getDefaultExport function for compatibility with non-harmony modules\n \t__webpack_require__.n = function(module) {\n \t\tvar getter = module && module.__esModule ?\n \t\t\tfunction getDefault() { return module['default']; } :\n \t\t\tfunction getModuleExports() { return module; };\n \t\t__webpack_require__.d(getter, 'a', getter);\n \t\treturn getter;\n \t};\n\n \t// Object.prototype.hasOwnProperty.call\n \t__webpack_require__.o = function(object, property) { return Object.prototype.hasOwnProperty.call(object, property); };\n\n \t// __webpack_public_path__\n \t__webpack_require__.p = \"\";\n\n\n \t// Load entry module and return exports\n \treturn __webpack_require__(__webpack_require__.s = 1);\n","/*!\r\n globals: angular, window\r\n List of used element methods available in JQuery but not in JQuery Lite\r\n element.before(elem)\r\n element.height()\r\n element.outerHeight(true)\r\n element.height(value) = only for Top/Bottom padding elements\r\n element.scrollTop()\r\n element.scrollTop(value)\r\n */\r\n\r\nexport default class JQLiteExtras {\r\n\r\n registerFor(element) {\r\n let convertToPx, css, getStyle, isWindow;\r\n // angular implementation blows up if elem is the window\r\n css = angular.element.prototype.css;\r\n\r\n element.prototype.css = function (name, value) {\r\n let self = this;\r\n let elem = self[0];\r\n if (!(!elem || elem.nodeType === 3 || elem.nodeType === 8 || !elem.style)) {\r\n return css.call(self, name, value);\r\n }\r\n };\r\n\r\n // as defined in angularjs v1.0.5\r\n isWindow = (obj) => obj && obj.document && obj.location && obj.alert && obj.setInterval;\r\n\r\n function scrollTo(self, direction, value) {\r\n let elem = self[0];\r\n let [method, prop, preserve] = {\r\n top: [\r\n 'scrollTop',\r\n 'pageYOffset',\r\n 'scrollLeft'\r\n ],\r\n left: [\r\n 'scrollLeft',\r\n 'pageXOffset',\r\n 'scrollTop'\r\n ]\r\n }[direction];\r\n\r\n const isValueDefined = typeof value !== 'undefined';\r\n if (isWindow(elem)) {\r\n if (isValueDefined) {\r\n return elem.scrollTo(self[preserve].call(self), value);\r\n }\r\n return (prop in elem) ? elem[prop] : elem.document.documentElement[method];\r\n } else {\r\n if (isValueDefined) {\r\n elem[method] = value;\r\n }\r\n return elem[method];\r\n }\r\n }\r\n\r\n if (window.getComputedStyle) {\r\n getStyle = (elem) => window.getComputedStyle(elem, null);\r\n convertToPx = (elem, value) => parseFloat(value);\r\n } else {\r\n getStyle = (elem) => elem.currentStyle;\r\n convertToPx = (elem, value) => {\r\n let left, result, rs, rsLeft, style;\r\n let core_pnum = /[+-]?(?:\\d*\\.|)\\d+(?:[eE][+-]?\\d+|)/.source;\r\n let rnumnonpx = new RegExp('^(' + core_pnum + ')(?!px)[a-z%]+$', 'i');\r\n\r\n if (!rnumnonpx.test(value)) {\r\n return parseFloat(value);\r\n }\r\n\r\n // ported from JQuery\r\n style = elem.style;\r\n left = style.left;\r\n rs = elem.runtimeStyle;\r\n rsLeft = rs && rs.left;\r\n if (rs) {\r\n rs.left = style.left;\r\n }\r\n // put in the new values to get a computed style out\r\n style.left = value;\r\n result = style.pixelLeft;\r\n style.left = left;\r\n if (rsLeft) {\r\n rs.left = rsLeft;\r\n }\r\n return result;\r\n };\r\n }\r\n\r\n function getMeasurements(elem, measure) {\r\n let base, borderA, borderB, computedMarginA, computedMarginB, computedStyle, dirA, dirB, marginA, marginB, paddingA, paddingB;\r\n\r\n if (isWindow(elem)) {\r\n base = document.documentElement[{height: 'clientHeight', width: 'clientWidth'}[measure]];\r\n\r\n return {\r\n base: base,\r\n padding: 0,\r\n border: 0,\r\n margin: 0\r\n };\r\n }\r\n\r\n // Start with offset property\r\n [\r\n base,\r\n dirA,\r\n dirB\r\n ] = {\r\n width: [\r\n elem.offsetWidth,\r\n 'Left',\r\n 'Right'\r\n ],\r\n height: [\r\n elem.offsetHeight,\r\n 'Top',\r\n 'Bottom'\r\n ]\r\n }[measure];\r\n\r\n computedStyle = getStyle(elem);\r\n paddingA = convertToPx(elem, computedStyle['padding' + dirA]) || 0;\r\n paddingB = convertToPx(elem, computedStyle['padding' + dirB]) || 0;\r\n borderA = convertToPx(elem, computedStyle['border' + dirA + 'Width']) || 0;\r\n borderB = convertToPx(elem, computedStyle['border' + dirB + 'Width']) || 0;\r\n computedMarginA = computedStyle['margin' + dirA];\r\n computedMarginB = computedStyle['margin' + dirB];\r\n\r\n // I do not care for width for now, so this hack is irrelevant\r\n // if ( !supportsPercentMargin )\r\n // computedMarginA = hackPercentMargin( elem, computedStyle, computedMarginA )\r\n // computedMarginB = hackPercentMargin( elem, computedStyle, computedMarginB )\r\n marginA = convertToPx(elem, computedMarginA) || 0;\r\n marginB = convertToPx(elem, computedMarginB) || 0;\r\n\r\n return {\r\n base: base,\r\n padding: paddingA + paddingB,\r\n border: borderA + borderB,\r\n margin: marginA + marginB\r\n };\r\n }\r\n\r\n function getWidthHeight(elem, direction, measure) {\r\n let computedStyle, result;\r\n\r\n let measurements = getMeasurements(elem, direction);\r\n\r\n if (measurements.base > 0) {\r\n return {\r\n base: measurements.base - measurements.padding - measurements.border,\r\n outer: measurements.base,\r\n outerfull: measurements.base + measurements.margin\r\n }[measure];\r\n }\r\n\r\n // Fall back to computed then uncomputed css if necessary\r\n computedStyle = getStyle(elem);\r\n result = computedStyle[direction];\r\n\r\n if (result < 0 || result === null) {\r\n result = elem.style[direction] || 0;\r\n }\r\n\r\n // Normalize \"\", auto, and prepare for extra\r\n result = parseFloat(result) || 0;\r\n\r\n return {\r\n base: result - measurements.padding - measurements.border,\r\n outer: result,\r\n outerfull: result + measurements.padding + measurements.border + measurements.margin\r\n }[measure];\r\n }\r\n\r\n // define missing methods\r\n return angular.forEach({\r\n before(newElem) {\r\n var children, elem, i, j, parent, ref, self;\r\n self = this;\r\n elem = self[0];\r\n parent = self.parent();\r\n children = parent.contents();\r\n if (children[0] === elem) {\r\n return parent.prepend(newElem);\r\n } else {\r\n for (i = j = 1, ref = children.length - 1; 1 <= ref ? j <= ref : j >= ref; i = 1 <= ref ? ++j : --j) {\r\n if (children[i] === elem) {\r\n angular.element(children[i - 1]).after(newElem);\r\n return;\r\n }\r\n }\r\n throw new Error('invalid DOM structure ' + elem.outerHTML);\r\n }\r\n },\r\n height (value){\r\n var self;\r\n self = this;\r\n if (typeof value !== 'undefined') {\r\n if (angular.isNumber(value)) {\r\n value = value + 'px';\r\n }\r\n return css.call(self, 'height', value);\r\n } else {\r\n return getWidthHeight(this[0], 'height', 'base');\r\n }\r\n },\r\n outerHeight(option) {\r\n return getWidthHeight(this[0], 'height', option ? 'outerfull' : 'outer');\r\n },\r\n outerWidth(option) {\r\n return getWidthHeight(this[0], 'width', option ? 'outerfull' : 'outer');\r\n },\r\n\r\n /*\r\n The offset setter method is not implemented\r\n */\r\n offset(value) {\r\n let docElem, win;\r\n let self = this;\r\n let box = {\r\n top: 0,\r\n left: 0\r\n };\r\n let elem = self[0];\r\n let doc = elem && elem.ownerDocument;\r\n\r\n if (arguments.length) {\r\n if (value === undefined) {\r\n return self;\r\n }\r\n // TODO: implement setter\r\n throw new Error('offset setter method is not implemented');\r\n }\r\n\r\n if (!doc) {\r\n return;\r\n }\r\n\r\n docElem = doc.documentElement;\r\n\r\n // TODO: Make sure it's not a disconnected DOM node\r\n\r\n if (elem.getBoundingClientRect != null) {\r\n box = elem.getBoundingClientRect();\r\n }\r\n\r\n win = doc.defaultView || doc.parentWindow;\r\n\r\n return {\r\n top: box.top + (win.pageYOffset || docElem.scrollTop) - (docElem.clientTop || 0),\r\n left: box.left + (win.pageXOffset || docElem.scrollLeft) - (docElem.clientLeft || 0)\r\n };\r\n },\r\n scrollTop(value) {\r\n return scrollTo(this, 'top', value);\r\n },\r\n scrollLeft(value) {\r\n return scrollTo(this, 'left', value);\r\n }\r\n }, (value, key) => {\r\n if (!element.prototype[key]) {\r\n return element.prototype[key] = value;\r\n }\r\n });\r\n }\r\n\r\n}\r\n","const hideClassToken = 'ng-ui-scroll-hide';\r\n\r\nexport default class ElementRoutines {\r\n\r\n static addCSSRules() {\r\n const selector = '.' + hideClassToken;\r\n const rules = 'display: none';\r\n const sheet = document.styleSheets[0];\r\n let index;\r\n try {\r\n index = sheet.cssRules.length;\r\n } catch (err) {\r\n index = 0;\r\n }\r\n if('insertRule' in sheet) {\r\n sheet.insertRule(selector + '{' + rules + '}', index);\r\n }\r\n else if('addRule' in sheet) {\r\n sheet.addRule(selector, rules, index);\r\n }\r\n }\r\n\r\n constructor($injector, $q) {\r\n this.$animate = ($injector.has && $injector.has('$animate')) ? $injector.get('$animate') : null;\r\n this.isAngularVersionLessThen1_3 = angular.version.major === 1 && angular.version.minor < 3;\r\n this.$q = $q;\r\n }\r\n\r\n hideElement(wrapper) {\r\n wrapper.element.addClass(hideClassToken);\r\n }\r\n\r\n showElement(wrapper) {\r\n wrapper.element.removeClass(hideClassToken);\r\n }\r\n\r\n insertElement(newElement, previousElement) {\r\n previousElement.after(newElement);\r\n return [];\r\n }\r\n\r\n removeElement(wrapper) {\r\n wrapper.element.remove();\r\n wrapper.scope.$destroy();\r\n return [];\r\n }\r\n\r\n insertElementAnimated(newElement, previousElement) {\r\n if (!this.$animate) {\r\n return this.insertElement(newElement, previousElement);\r\n }\r\n\r\n if (this.isAngularVersionLessThen1_3) {\r\n const deferred = this.$q.defer();\r\n // no need for parent - previous element is never null\r\n this.$animate.enter(newElement, null, previousElement, () => deferred.resolve());\r\n\r\n return [deferred.promise];\r\n }\r\n\r\n // no need for parent - previous element is never null\r\n return [this.$animate.enter(newElement, null, previousElement)];\r\n }\r\n\r\n removeElementAnimated(wrapper) {\r\n if (!this.$animate) {\r\n return this.removeElement(wrapper);\r\n }\r\n\r\n if (this.isAngularVersionLessThen1_3) {\r\n const deferred = this.$q.defer();\r\n this.$animate.leave(wrapper.element, () => {\r\n wrapper.scope.$destroy();\r\n return deferred.resolve();\r\n });\r\n\r\n return [deferred.promise];\r\n }\r\n\r\n return [(this.$animate.leave(wrapper.element)).then(() => wrapper.scope.$destroy())];\r\n }\r\n}","export default function ScrollBuffer(elementRoutines, bufferSize, startIndex) {\r\n const buffer = Object.create(Array.prototype);\r\n\r\n angular.extend(buffer, {\r\n size: bufferSize,\r\n\r\n reset(startIndex) {\r\n buffer.remove(0, buffer.length);\r\n buffer.eof = false;\r\n buffer.bof = false;\r\n buffer.first = startIndex;\r\n buffer.next = startIndex;\r\n buffer.minIndex = startIndex;\r\n buffer.maxIndex = startIndex;\r\n buffer.minIndexUser = null;\r\n buffer.maxIndexUser = null;\r\n },\r\n\r\n append(items) {\r\n items.forEach((item) => {\r\n ++buffer.next;\r\n buffer.insert('append', item);\r\n });\r\n buffer.maxIndex = buffer.eof ? buffer.next - 1 : Math.max(buffer.next - 1, buffer.maxIndex);\r\n },\r\n\r\n prepend(items) {\r\n items.reverse().forEach((item) => {\r\n --buffer.first;\r\n buffer.insert('prepend', item);\r\n });\r\n buffer.minIndex = buffer.bof ? buffer.minIndex = buffer.first : Math.min(buffer.first, buffer.minIndex);\r\n },\r\n\r\n /**\r\n * inserts wrapped element in the buffer\r\n * the first argument is either operation keyword (see below) or a number for operation 'insert'\r\n * for insert the number is the index for the buffer element the new one have to be inserted after\r\n * operations: 'append', 'prepend', 'insert', 'remove', 'update', 'none'\r\n */\r\n insert(operation, item, isTop) {\r\n const wrapper = {\r\n item: item\r\n };\r\n\r\n if (operation % 1 === 0) {// it is an insert\r\n wrapper.op = 'insert';\r\n buffer.splice(operation, 0, wrapper);\r\n if(isTop) {\r\n buffer.first--;\r\n }\r\n else {\r\n buffer.next++;\r\n }\r\n } else {\r\n wrapper.op = operation;\r\n switch (operation) {\r\n case 'append':\r\n buffer.push(wrapper);\r\n break;\r\n case 'prepend':\r\n buffer.unshift(wrapper);\r\n break;\r\n }\r\n }\r\n },\r\n\r\n // removes elements from buffer\r\n remove(arg1, arg2) {\r\n if (angular.isNumber(arg1)) {\r\n // removes items from arg1 (including) through arg2 (excluding)\r\n for (let i = arg1; i < arg2; i++) {\r\n elementRoutines.removeElement(buffer[i]);\r\n }\r\n return buffer.splice(arg1, arg2 - arg1);\r\n }\r\n // removes single item(wrapper) from the buffer\r\n buffer.splice(buffer.indexOf(arg1), 1);\r\n if(arg1._op === 'isTop' && buffer.first === this.getAbsMinIndex()) {\r\n this.incrementMinIndex();\r\n }\r\n else {\r\n this.decrementMaxIndex();\r\n }\r\n if(arg1._op === 'isTop') {\r\n buffer.first++;\r\n }\r\n else {\r\n buffer.next--;\r\n }\r\n if(!buffer.length) {\r\n buffer.first = 1;\r\n buffer.next = 1;\r\n }\r\n\r\n return elementRoutines.removeElementAnimated(arg1);\r\n },\r\n\r\n incrementMinIndex() {\r\n if(buffer.minIndexUser !== null) {\r\n if(buffer.minIndex > buffer.minIndexUser) {\r\n buffer.minIndexUser++;\r\n return;\r\n }\r\n if(buffer.minIndex === buffer.minIndexUser) {\r\n buffer.minIndexUser++;\r\n }\r\n }\r\n buffer.minIndex++;\r\n },\r\n\r\n decrementMaxIndex() {\r\n if(buffer.maxIndexUser !== null && buffer.maxIndex <= buffer.maxIndexUser) {\r\n buffer.maxIndexUser--;\r\n }\r\n buffer.maxIndex--;\r\n },\r\n\r\n getAbsMinIndex() {\r\n if(buffer.minIndexUser !== null) {\r\n return Math.min(buffer.minIndexUser, buffer.minIndex);\r\n }\r\n return buffer.minIndex;\r\n },\r\n\r\n getAbsMaxIndex() {\r\n if(buffer.maxIndexUser !== null) {\r\n return Math.max(buffer.maxIndexUser, buffer.maxIndex);\r\n }\r\n return buffer.maxIndex;\r\n },\r\n\r\n effectiveHeight(elements) {\r\n if (!elements.length) {\r\n return 0;\r\n }\r\n let top = Number.MAX_VALUE;\r\n let bottom = Number.NEGATIVE_INFINITY;\r\n elements.forEach((wrapper) => {\r\n if (wrapper.element[0].offsetParent) {\r\n // element style is not display:none\r\n top = Math.min(top, wrapper.element.offset().top);\r\n bottom = Math.max(bottom, wrapper.element.offset().top + wrapper.element.outerHeight(true));\r\n }\r\n });\r\n return Math.max(0, bottom - top);\r\n }\r\n\r\n });\r\n\r\n buffer.reset(startIndex);\r\n\r\n return buffer;\r\n}\r\n","// Can't just extend the Array, due to Babel does not support built-in classes extending\r\n// This solution was taken from https://stackoverflow.com/questions/46897414/es6-class-extends-array-workaround-for-es5-babel-transpile\r\nclass CacheProto {\r\n add(item) {\r\n for (let i = this.length - 1; i >= 0; i--) {\r\n if (this[i].index === item.scope.$index) {\r\n this[i].height = item.element.outerHeight();\r\n return;\r\n }\r\n }\r\n this.push({\r\n index: item.scope.$index,\r\n height: item.element.outerHeight()\r\n });\r\n this.sort((a, b) => ((a.index < b.index) ? -1 : ((a.index > b.index) ? 1 : 0)));\r\n }\r\n\r\n remove(argument, _isTop) {\r\n const index = argument % 1 === 0 ? argument : argument.scope.$index;\r\n const isTop = argument % 1 === 0 ? _isTop : argument._op === 'isTop';\r\n for (let i = this.length - 1; i >= 0; i--) {\r\n if (this[i].index === index) {\r\n this.splice(i, 1);\r\n break;\r\n }\r\n }\r\n if(!isTop) {\r\n for (let i = this.length - 1; i >= 0; i--) {\r\n if (this[i].index > index) {\r\n this[i].index--;\r\n }\r\n }\r\n }\r\n }\r\n\r\n clear() {\r\n this.length = 0;\r\n }\r\n}\r\n\r\nfunction Cache() {\r\n const instance = [];\r\n instance.push.apply(instance, arguments);\r\n Object.setPrototypeOf(instance, Cache.prototype);\r\n return instance;\r\n}\r\nCache.prototype = Object.create(Array.prototype);\r\nObject.getOwnPropertyNames(CacheProto.prototype).forEach(methodName =>\r\n Cache.prototype[methodName] = CacheProto.prototype[methodName]\r\n);\r\n\r\nfunction generateElement(template) {\r\n if(template.nodeType !== Node.ELEMENT_NODE) {\r\n throw new Error('ui-scroll directive requires an Element node for templating the view');\r\n }\r\n let element;\r\n switch (template.tagName.toLowerCase()) {\r\n case 'dl':\r\n throw new Error(`ui-scroll directive does not support <${template.tagName}> as a repeating tag: ${template.outerHTML}`);\r\n case 'tr':\r\n let table = angular.element('
    ');\r\n element = table.find('tr');\r\n break;\r\n case 'li':\r\n element = angular.element('
  • ');\r\n break;\r\n default:\r\n element = angular.element('
    ');\r\n }\r\n return element;\r\n}\r\n\r\nclass Padding {\r\n constructor(template) {\r\n this.element = generateElement(template);\r\n this.cache = new Cache();\r\n }\r\n\r\n height() {\r\n return this.element.height.apply(this.element, arguments);\r\n }\r\n}\r\n\r\nexport default Padding;","import Padding from './padding';\r\n\r\nexport default function Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding) {\r\n let topPadding = null;\r\n let bottomPadding = null;\r\n const viewport = viewportController && viewportController.viewport ? viewportController.viewport : angular.element(window);\r\n const container = viewportController && viewportController.container ? viewportController.container : undefined;\r\n const scope = viewportController && viewportController.scope ? viewportController.scope : $rootScope;\r\n\r\n viewport.css({\r\n 'overflow-anchor': 'none',\r\n 'overflow-y': 'auto',\r\n 'display': 'block'\r\n });\r\n\r\n function bufferPadding() {\r\n return viewport.outerHeight() * padding; // some extra space to initiate preload\r\n }\r\n\r\n angular.extend(viewport, {\r\n getScope() {\r\n return scope;\r\n },\r\n\r\n createPaddingElements(template) {\r\n topPadding = new Padding(template);\r\n bottomPadding = new Padding(template);\r\n element.before(topPadding.element);\r\n element.after(bottomPadding.element);\r\n topPadding.height(0);\r\n bottomPadding.height(0);\r\n },\r\n\r\n applyContainerStyle() {\r\n if (!container) {\r\n return true;\r\n }\r\n if(container !== viewport) {\r\n viewport.css('height', window.getComputedStyle(container[0]).height);\r\n }\r\n return viewport.height() > 0;\r\n },\r\n\r\n bottomDataPos() {\r\n let scrollHeight = viewport[0].scrollHeight;\r\n scrollHeight = scrollHeight != null ? scrollHeight : viewport[0].document.documentElement.scrollHeight;\r\n return scrollHeight - bottomPadding.height();\r\n },\r\n\r\n topDataPos() {\r\n return topPadding.height();\r\n },\r\n\r\n bottomVisiblePos() {\r\n return viewport.scrollTop() + viewport.outerHeight();\r\n },\r\n\r\n topVisiblePos() {\r\n return viewport.scrollTop();\r\n },\r\n\r\n insertElement(e, sibling) {\r\n return elementRoutines.insertElement(e, sibling || topPadding.element);\r\n },\r\n\r\n insertElementAnimated(e, sibling) {\r\n return elementRoutines.insertElementAnimated(e, sibling || topPadding.element);\r\n },\r\n\r\n shouldLoadBottom() {\r\n return !buffer.eof && viewport.bottomDataPos() < viewport.bottomVisiblePos() + bufferPadding();\r\n },\r\n\r\n clipBottom() {\r\n // clip the invisible items off the bottom\r\n let overage = 0;\r\n let overageHeight = 0;\r\n let itemHeight = 0;\r\n let emptySpaceHeight = viewport.bottomDataPos() - viewport.bottomVisiblePos() - bufferPadding();\r\n\r\n for (let i = buffer.length - 1; i >= 0; i--) {\r\n itemHeight = buffer[i].element.outerHeight(true);\r\n if (overageHeight + itemHeight > emptySpaceHeight) {\r\n break;\r\n }\r\n bottomPadding.cache.add(buffer[i]);\r\n overageHeight += itemHeight;\r\n overage++;\r\n }\r\n\r\n if (overage > 0) {\r\n buffer.eof = false;\r\n buffer.remove(buffer.length - overage, buffer.length);\r\n buffer.next -= overage;\r\n viewport.adjustPaddings();\r\n }\r\n },\r\n\r\n shouldLoadTop() {\r\n return !buffer.bof && (viewport.topDataPos() > viewport.topVisiblePos() - bufferPadding());\r\n },\r\n\r\n clipTop() {\r\n // clip the invisible items off the top\r\n let overage = 0;\r\n let overageHeight = 0;\r\n let itemHeight = 0;\r\n let emptySpaceHeight = viewport.topVisiblePos() - viewport.topDataPos() - bufferPadding();\r\n\r\n for (let i = 0; i < buffer.length; i++) {\r\n itemHeight = buffer[i].element.outerHeight(true);\r\n if (overageHeight + itemHeight > emptySpaceHeight) {\r\n break;\r\n }\r\n topPadding.cache.add(buffer[i]);\r\n overageHeight += itemHeight;\r\n overage++;\r\n }\r\n\r\n if (overage > 0) {\r\n // we need to adjust top padding element before items are removed from top\r\n // to avoid strange behaviour of scroll bar during remove top items when we are at the very bottom\r\n topPadding.height(topPadding.height() + overageHeight);\r\n buffer.bof = false;\r\n buffer.remove(0, overage);\r\n buffer.first += overage;\r\n }\r\n },\r\n\r\n adjustPaddings() {\r\n if (!buffer.length) {\r\n return;\r\n }\r\n\r\n // precise heights calculation based on items that are in buffer or that were in buffer once\r\n const visibleItemsHeight = buffer.reduce((summ, item) => summ + item.element.outerHeight(true), 0);\r\n\r\n let topPaddingHeight = 0, topCount = 0;\r\n topPadding.cache.forEach(item => {\r\n if(item.index < buffer.first) {\r\n topPaddingHeight += item.height;\r\n topCount++;\r\n }\r\n });\r\n\r\n let bottomPaddingHeight = 0, bottomCount = 0;\r\n bottomPadding.cache.forEach(item => {\r\n if(item.index >= buffer.next) {\r\n bottomPaddingHeight += item.height;\r\n bottomCount++;\r\n }\r\n });\r\n\r\n const totalHeight = visibleItemsHeight + topPaddingHeight + bottomPaddingHeight;\r\n const averageItemHeight = totalHeight / (topCount + bottomCount + buffer.length);\r\n\r\n // average heights calculation, items that have never been reached\r\n let adjustTopPadding = buffer.minIndexUser !== null && buffer.minIndex > buffer.minIndexUser;\r\n let adjustBottomPadding = buffer.maxIndexUser !== null && buffer.maxIndex < buffer.maxIndexUser;\r\n let topPaddingHeightAdd = adjustTopPadding ? (buffer.minIndex - buffer.minIndexUser) * averageItemHeight : 0;\r\n let bottomPaddingHeightAdd = adjustBottomPadding ? (buffer.maxIndexUser - buffer.maxIndex) * averageItemHeight : 0;\r\n\r\n // paddings combine adjustment\r\n topPadding.height(topPaddingHeight + topPaddingHeightAdd);\r\n bottomPadding.height(bottomPaddingHeight + bottomPaddingHeightAdd);\r\n },\r\n\r\n onAfterMinIndexSet(topPaddingHeightOld) {\r\n // additional scrollTop adjustment in case of datasource.minIndex external set\r\n if (buffer.minIndexUser !== null && buffer.minIndex > buffer.minIndexUser) {\r\n let diff = topPadding.height() - topPaddingHeightOld;\r\n viewport.scrollTop(viewport.scrollTop() + diff);\r\n while((diff -= viewport.scrollTop()) > 0) {\r\n bottomPadding.height(bottomPadding.height() + diff);\r\n viewport.scrollTop(viewport.scrollTop() + diff);\r\n }\r\n }\r\n },\r\n\r\n onAfterPrepend(updates) {\r\n if (!updates.prepended.length)\r\n return;\r\n const height = buffer.effectiveHeight(updates.prepended);\r\n const paddingHeight = topPadding.height() - height;\r\n if (paddingHeight >= 0) {\r\n topPadding.height(paddingHeight);\r\n }\r\n else {\r\n topPadding.height(0);\r\n viewport.scrollTop(viewport.scrollTop() - paddingHeight);\r\n }\r\n },\r\n\r\n resetTopPadding() {\r\n topPadding.height(0);\r\n topPadding.cache.clear();\r\n },\r\n\r\n resetBottomPadding() {\r\n bottomPadding.height(0);\r\n bottomPadding.cache.clear();\r\n },\r\n\r\n removeCacheItem(item, isTop) {\r\n topPadding.cache.remove(item, isTop);\r\n bottomPadding.cache.remove(item, isTop);\r\n },\r\n\r\n removeItem(item) {\r\n this.removeCacheItem(item);\r\n return buffer.remove(item);\r\n }\r\n });\r\n\r\n return viewport;\r\n}\r\n","class Adapter {\r\n\r\n constructor($scope, $parse, $attr, viewport, buffer, doAdjust, reload) {\r\n this.$parse = $parse;\r\n this.$attr = $attr;\r\n this.viewport = viewport;\r\n this.buffer = buffer;\r\n\r\n this.doAdjust = doAdjust;\r\n this.reload = reload;\r\n\r\n this.isLoading = false;\r\n this.disabled = false;\r\n\r\n const viewportScope = viewport.getScope();\r\n this.startScope = viewportScope.$parent ? viewportScope : $scope;\r\n\r\n this.publicContext = {};\r\n this.assignAdapter($attr.adapter);\r\n this.generatePublicContext();\r\n }\r\n\r\n assignAdapter(adapterAttr) {\r\n if (!adapterAttr || !(adapterAttr = adapterAttr.replace(/^\\s+|\\s+$/gm, ''))) {\r\n return;\r\n }\r\n let adapterOnScope;\r\n\r\n try {\r\n this.$parse(adapterAttr).assign(this.startScope, {});\r\n adapterOnScope = this.$parse(adapterAttr)(this.startScope);\r\n }\r\n catch (error) {\r\n error.message = `Angular ui-scroll Adapter assignment exception.\\n` +\r\n `Can't parse \"${adapterAttr}\" expression.\\n` +\r\n error.message;\r\n throw error;\r\n }\r\n\r\n angular.extend(adapterOnScope, this.publicContext);\r\n this.publicContext = adapterOnScope;\r\n }\r\n\r\n generatePublicContext() {\r\n // these methods will be accessible out of ui-scroll via user defined adapter\r\n const publicMethods = ['reload', 'applyUpdates', 'append', 'prepend', 'isBOF', 'isEOF', 'isEmpty'];\r\n for (let i = publicMethods.length - 1; i >= 0; i--) {\r\n this.publicContext[publicMethods[i]] = this[publicMethods[i]].bind(this);\r\n }\r\n\r\n // these read-only props will be accessible out of ui-scroll via user defined adapter\r\n const publicProps = ['isLoading', 'topVisible', 'topVisibleElement', 'topVisibleScope', 'bottomVisible', 'bottomVisibleElement', 'bottomVisibleScope'];\r\n for (let i = publicProps.length - 1; i >= 0; i--) {\r\n let property, attr = this.$attr[publicProps[i]];\r\n Object.defineProperty(this, publicProps[i], {\r\n get: () => property,\r\n set: (value) => {\r\n property = value;\r\n this.publicContext[publicProps[i]] = value;\r\n if (attr) {\r\n this.$parse(attr).assign(this.startScope, value);\r\n }\r\n }\r\n });\r\n }\r\n\r\n // non-read-only public property\r\n Object.defineProperty(this.publicContext, 'disabled', {\r\n get: () => this.disabled,\r\n set: (value) => (!(this.disabled = value)) ? this.doAdjust() : null\r\n });\r\n }\r\n\r\n loading(value) {\r\n this.isLoading = value;\r\n }\r\n\r\n isBOF() {\r\n return this.buffer.bof;\r\n }\r\n\r\n isEOF() {\r\n return this.buffer.eof;\r\n }\r\n\r\n isEmpty() {\r\n return !this.buffer.length;\r\n }\r\n\r\n append(newItems) {\r\n this.buffer.append(newItems);\r\n this.doAdjust();\r\n this.viewport.clipTop();\r\n this.viewport.clipBottom();\r\n }\r\n\r\n prepend(newItems) {\r\n this.buffer.prepend(newItems);\r\n this.doAdjust();\r\n this.viewport.clipTop();\r\n this.viewport.clipBottom();\r\n }\r\n\r\n applyUpdates(arg1, arg2) {\r\n if (typeof arg1 === 'function') {\r\n this.applyUpdatesFunc(arg1);\r\n } else {\r\n this.applyUpdatesIndex(arg1, arg2);\r\n }\r\n this.doAdjust();\r\n }\r\n\r\n applyUpdatesFunc(cb) {\r\n this.buffer.slice(0).forEach((wrapper) => {\r\n // we need to do it on the buffer clone, because buffer content\r\n // may change as we iterate through\r\n this.applyUpdate(wrapper, cb(wrapper.item, wrapper.scope, wrapper.element));\r\n });\r\n }\r\n\r\n applyUpdatesIndex(index, newItems) {\r\n if (index % 1 !== 0) {\r\n throw new Error('applyUpdates - ' + index + ' is not a valid index (should be an integer)');\r\n }\r\n const _index = index - this.buffer.first;\r\n\r\n // apply updates only within buffer\r\n if (_index >= 0 && _index < this.buffer.length) {\r\n this.applyUpdate(this.buffer[_index], newItems);\r\n }\r\n // out-of-buffer case: deletion may affect Paddings\r\n else if(index >= this.buffer.getAbsMinIndex() && index <= this.buffer.getAbsMaxIndex()) {\r\n if(angular.isArray(newItems) && !newItems.length) {\r\n this.viewport.removeCacheItem(index, index === this.buffer.minIndex);\r\n if(index === this.buffer.getAbsMinIndex()) {\r\n this.buffer.incrementMinIndex();\r\n }\r\n else {\r\n this.buffer.decrementMaxIndex();\r\n }\r\n }\r\n }\r\n }\r\n\r\n applyUpdate(wrapper, newItems) {\r\n if (!angular.isArray(newItems)) {\r\n return;\r\n }\r\n let position = this.buffer.indexOf(wrapper);\r\n if (!newItems.reverse().some(newItem => newItem === wrapper.item)) {\r\n wrapper.op = 'remove';\r\n if(position === 0 && !newItems.length) {\r\n wrapper._op = 'isTop'; // to catch \"first\" edge case on remove\r\n }\r\n }\r\n newItems.forEach((newItem) => {\r\n if (newItem === wrapper.item) {\r\n position--;\r\n } else {\r\n // 3 parameter (isTop) is to catch \"first\" edge case on insert\r\n this.buffer.insert(position + 1, newItem, position === -1);\r\n }\r\n });\r\n }\r\n\r\n calculateProperties() {\r\n let rowTop = null, topHeight = 0;\r\n let topDone = false, bottomDone = false;\r\n const length = this.buffer.length;\r\n\r\n for (let i = 0; i < length; i++) {\r\n const item = this.buffer[i];\r\n const itemTop = item.element.offset().top;\r\n\r\n if (rowTop !== itemTop) { // a new row condition\r\n const itemHeight = item.element.outerHeight(true);\r\n const top = this.viewport.topDataPos() + topHeight + itemHeight;\r\n\r\n if (!topDone && top > this.viewport.topVisiblePos()) {\r\n topDone = true;\r\n this['topVisible'] = item.item;\r\n this['topVisibleElement'] = item.element;\r\n this['topVisibleScope'] = item.scope;\r\n }\r\n if (!bottomDone && (top >= this.viewport.bottomVisiblePos() || (i === length - 1 && this.isEOF()))) {\r\n bottomDone = true;\r\n this['bottomVisible'] = item.item;\r\n this['bottomVisibleElement'] = item.element;\r\n this['bottomVisibleScope'] = item.scope;\r\n }\r\n topHeight += itemHeight;\r\n }\r\n rowTop = itemTop;\r\n\r\n if (topDone && bottomDone) {\r\n break;\r\n }\r\n }\r\n }\r\n\r\n}\r\n\r\nexport default Adapter;\r\n","import JQLiteExtras from './modules/jqLiteExtras';\nimport ElementRoutines from './modules/elementRoutines.js';\nimport ScrollBuffer from './modules/buffer.js';\nimport Viewport from './modules/viewport.js';\nimport Adapter from './modules/adapter.js';\n\nangular.module('ui.scroll', [])\n\n .constant('JQLiteExtras', JQLiteExtras)\n .run(['JQLiteExtras', (JQLiteExtras) => {\n const elt = angular.element;\n !(window.jQuery && elt.fn && elt.fn.jquery) ? (new JQLiteExtras()).registerFor(elt) : null;\n ElementRoutines.addCSSRules();\n }])\n\n .directive('uiScrollViewport', function () {\n return {\n restrict: 'A',\n controller: [\n '$scope',\n '$element',\n function (scope, element) {\n this.container = element;\n this.viewport = element;\n this.scope = scope;\n\n angular.forEach(element.children(), child => {\n if (child.tagName.toLowerCase() === 'tbody') {\n this.viewport = angular.element(child);\n }\n });\n\n return this;\n }\n ]\n };\n })\n\n .directive('uiScroll', [\n '$log',\n '$injector',\n '$rootScope',\n '$timeout',\n '$interval',\n '$q',\n '$parse',\n function (console, $injector, $rootScope, $timeout, $interval, $q, $parse) {\n\n return {\n require: ['?^uiScrollViewport'],\n restrict: 'A',\n transclude: 'element',\n priority: 1000,\n terminal: true,\n link: link\n };\n\n function link($scope, element, $attr, controllers, linker) {\n const match = $attr.uiScroll.match(/^\\s*(\\w+)\\s+in\\s+([(\\w|\\$)\\.]+)\\s*$/);\n if (!match) {\n throw new Error('Expected uiScroll in form of \\'_item_ in _datasource_\\' but got \\'' + $attr.uiScroll + '\\'');\n }\n\n function parseNumber(value, defaultValue, isFloat) {\n if (!isFloat) {\n value = value === null ? defaultValue : Math.floor(value);\n }\n return isNaN(value) ? defaultValue : value;\n }\n\n function parseNumericAttr(value, defaultValue, isFloat) {\n const result = $parse(value)($scope);\n return parseNumber(result, defaultValue, isFloat);\n }\n\n const BUFFER_MIN = 3;\n const BUFFER_DEFAULT = 10;\n const PADDING_MIN = 0.3;\n const PADDING_DEFAULT = 0.5;\n const START_INDEX_DEFAULT = 1;\n const MAX_VIEWPORT_DELAY = 500;\n const VIEWPORT_POLLING_INTERVAL = 50;\n\n let datasource = null;\n const itemName = match[1];\n const datasourceName = match[2];\n const viewportController = controllers[0];\n const bufferSize = Math.max(BUFFER_MIN, parseNumericAttr($attr.bufferSize, BUFFER_DEFAULT));\n const padding = Math.max(PADDING_MIN, parseNumericAttr($attr.padding, PADDING_DEFAULT, true));\n let startIndex = parseNumericAttr($attr.startIndex, START_INDEX_DEFAULT);\n let ridActual = 0; // current data revision id\n let pending = [];\n\n const elementRoutines = new ElementRoutines($injector, $q);\n const buffer = new ScrollBuffer(elementRoutines, bufferSize, startIndex);\n const viewport = new Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding);\n const adapter = new Adapter($scope, $parse, $attr, viewport, buffer, doAdjust, reload);\n\n if (viewportController) {\n viewportController.adapter = adapter;\n }\n\n const isDatasourceValid = () =>\n Object.prototype.toString.call(datasource) === '[object Object]' && typeof datasource.get === 'function';\n\n datasource = $parse(datasourceName)($scope); // try to get datasource on scope\n if (!isDatasourceValid()) {\n datasource = $injector.get(datasourceName); // try to inject datasource as service\n if (!isDatasourceValid()) {\n throw new Error(datasourceName + ' is not a valid datasource');\n }\n }\n\n let onRenderHandlers = [];\n function onRenderHandlersRunner() {\n onRenderHandlers.forEach(handler => handler.run());\n onRenderHandlers = [];\n }\n function persistDatasourceIndex(datasource, propName) {\n let getter;\n // need to postpone min/maxIndexUser processing if the view is empty\n if(angular.isNumber(datasource[propName])) {\n getter = datasource[propName];\n if(angular.isNumber(getter)) {\n onRenderHandlers = onRenderHandlers.filter(handler => handler.id !== propName);\n onRenderHandlers.push({\n id: propName,\n run: () => datasource[propName] = getter\n });\n }\n }\n }\n\n function defineDatasourceIndex(datasource, propName, propUserName) {\n const descriptor = Object.getOwnPropertyDescriptor(datasource, propName);\n if (descriptor && (descriptor.set || descriptor.get)) {\n return;\n }\n let getter;\n persistDatasourceIndex(datasource, propName);\n Object.defineProperty(datasource, propName, {\n set: (value) => {\n getter = value;\n if(pending.length && !buffer.length) {\n persistDatasourceIndex(datasource, propName);\n return;\n }\n buffer[propUserName] = value;\n const topPaddingHeightOld = viewport.topDataPos();\n viewport.adjustPaddings();\n if (propName === 'minIndex') {\n viewport.onAfterMinIndexSet(topPaddingHeightOld);\n }\n },\n get: () => getter\n });\n }\n\n defineDatasourceIndex(datasource, 'minIndex', 'minIndexUser');\n defineDatasourceIndex(datasource, 'maxIndex', 'maxIndexUser');\n\n const fetchNext = (datasource.get.length !== 2) ?\n (success) => datasource.get(buffer.next, bufferSize, success) :\n (success) => {\n datasource.get({\n index: buffer.next,\n append: buffer.length ? buffer[buffer.length - 1].item : void 0,\n count: bufferSize\n }, success);\n };\n\n const fetchPrevious = (datasource.get.length !== 2) ?\n (success) => datasource.get(buffer.first - bufferSize, bufferSize, success) :\n (success) => {\n datasource.get({\n index: buffer.first - bufferSize,\n prepend: buffer.length ? buffer[0].item : void 0,\n count: bufferSize\n }, success);\n };\n\n const initialize = () => {\n let tryCount = 0;\n if(!viewport.applyContainerStyle()) {\n const timer = $interval(() => {\n tryCount++;\n if(viewport.applyContainerStyle()) {\n $interval.cancel(timer);\n doAdjust();\n }\n if(tryCount * VIEWPORT_POLLING_INTERVAL >= MAX_VIEWPORT_DELAY) {\n $interval.cancel(timer);\n throw Error(`ui-scroll directive requires a viewport with non-zero height in ${MAX_VIEWPORT_DELAY}ms`);\n }\n }, VIEWPORT_POLLING_INTERVAL);\n }\n else {\n doAdjust();\n }\n };\n\n /**\n * Build padding elements\n *\n * Calling linker is the only way I found to get access to the tag name of the template\n * to prevent the directive scope from pollution a new scope is created and destroyed\n * right after the builder creation is completed\n */\n linker((clone, scope) => {\n viewport.createPaddingElements(clone[0]);\n // we do not include the clone in the DOM. It means that the nested directives will not\n // be able to reach the parent directives, but in this case it is intentional because we\n // created the clone to access the template tag name\n scope.$destroy();\n clone.remove();\n });\n\n $scope.$on('$destroy', () => {\n unbindEvents();\n viewport.unbind('mousewheel', wheelHandler);\n });\n\n viewport.bind('mousewheel', wheelHandler);\n\n initialize();\n\n /* Private function definitions */\n\n function isInvalid(rid) {\n return (rid && rid !== ridActual) || $scope.$$destroyed;\n }\n\n function bindEvents() {\n viewport.bind('resize', resizeAndScrollHandler);\n viewport.bind('scroll', resizeAndScrollHandler);\n }\n\n function unbindEvents() {\n viewport.unbind('resize', resizeAndScrollHandler);\n viewport.unbind('scroll', resizeAndScrollHandler);\n }\n\n function reload() {\n unbindEvents();\n viewport.resetTopPadding();\n viewport.resetBottomPadding();\n if (arguments.length) {\n startIndex = parseNumber(arguments[0], START_INDEX_DEFAULT, false);\n }\n buffer.reset(startIndex);\n persistDatasourceIndex(datasource, 'minIndex');\n persistDatasourceIndex(datasource, 'maxIndex');\n doAdjust();\n }\n\n function isElementVisible(wrapper) {\n return wrapper.element.height() && wrapper.element[0].offsetParent;\n }\n\n function visibilityWatcher(wrapper) {\n if (isElementVisible(wrapper)) {\n buffer.forEach((item) => {\n if (typeof item.unregisterVisibilityWatcher === 'function') {\n item.unregisterVisibilityWatcher();\n delete item.unregisterVisibilityWatcher;\n }\n });\n if (!pending.length) {\n $timeout(() => doAdjust());\n }\n }\n }\n\n function insertWrapperContent(wrapper, insertAfter) {\n createElement(wrapper, insertAfter, viewport.insertElement);\n if (!isElementVisible(wrapper)) {\n wrapper.unregisterVisibilityWatcher = wrapper.scope.$watch(() => visibilityWatcher(wrapper));\n }\n elementRoutines.hideElement(wrapper); // hide inserted elements before data binding\n }\n\n function createElement(wrapper, insertAfter, insertElement) {\n let promises = null;\n const sibling = (insertAfter > 0) ? buffer[insertAfter - 1].element : undefined;\n linker((clone, scope) => {\n promises = insertElement(clone, sibling);\n wrapper.element = clone;\n wrapper.scope = scope;\n scope[itemName] = wrapper.item;\n });\n // ui-scroll-grid apply\n if (adapter.transform) {\n const tdInitializer = wrapper.scope.uiScrollTdInitializer;\n if (tdInitializer && tdInitializer.linking) {\n adapter.transform(wrapper.scope, wrapper.element);\n } else {\n wrapper.scope.uiScrollTdInitializer = {\n onLink: () => adapter.transform(wrapper.scope, wrapper.element),\n scope: wrapper.scope\n };\n }\n }\n return promises;\n }\n\n function updateDOM() {\n let promises = [];\n const toBePrepended = [];\n const toBeRemoved = [];\n const inserted = [];\n\n buffer.forEach((wrapper, i) => {\n switch (wrapper.op) {\n case 'prepend':\n toBePrepended.unshift(wrapper);\n break;\n case 'append':\n insertWrapperContent(wrapper, i);\n wrapper.op = 'none';\n inserted.push(wrapper);\n break;\n case 'insert':\n promises = promises.concat(createElement(wrapper, i, viewport.insertElementAnimated));\n wrapper.op = 'none';\n inserted.push(wrapper);\n break;\n case 'remove':\n toBeRemoved.push(wrapper);\n }\n });\n\n toBeRemoved.forEach((wrapper) => promises = promises.concat(viewport.removeItem(wrapper)));\n\n if (toBePrepended.length)\n toBePrepended.forEach((wrapper) => {\n insertWrapperContent(wrapper);\n wrapper.op = 'none';\n });\n\n buffer.forEach((item, i) => item.scope.$index = buffer.first + i);\n\n return {\n prepended: toBePrepended,\n removed: toBeRemoved,\n inserted: inserted,\n animated: promises\n };\n\n }\n\n function updatePaddings(rid, updates) {\n // schedule another doAdjust after animation completion\n if (updates.animated.length) {\n $q.all(updates.animated).then(() => {\n viewport.adjustPaddings();\n doAdjust(rid);\n });\n } else {\n viewport.adjustPaddings();\n }\n }\n\n function enqueueFetch(rid, updates) {\n if (viewport.shouldLoadBottom()) {\n if (!updates || buffer.effectiveHeight(updates.inserted) > 0) {\n // this means that at least one item appended in the last batch has height > 0\n if (pending.push(true) === 1) {\n adapter.loading(true);\n fetch(rid);\n }\n }\n } else if (viewport.shouldLoadTop()) {\n if ((!updates || buffer.effectiveHeight(updates.prepended) > 0) || pending[0]) {\n // this means that at least one item appended in the last batch has height > 0\n // pending[0] = true means that previous fetch was appending. We need to force at least one prepend\n // BTW there will always be at least 1 element in the pending array because bottom is fetched first\n if (pending.push(false) === 1) {\n adapter.loading(true);\n fetch(rid);\n }\n }\n }\n }\n\n function processUpdates() {\n const updates = updateDOM();\n\n // We need the item bindings to be processed before we can do adjustments\n !$scope.$$phase && !$rootScope.$$phase && $scope.$digest();\n\n updates.inserted.forEach(w => elementRoutines.showElement(w));\n updates.prepended.forEach(w => elementRoutines.showElement(w));\n return updates;\n }\n\n function doAdjust(rid) {\n if (!rid) { // dismiss pending requests\n pending = [];\n rid = ++ridActual;\n }\n\n const updates = processUpdates();\n\n if (isInvalid(rid)) {\n return;\n }\n\n updatePaddings(rid, updates);\n enqueueFetch(rid);\n\n if (!pending.length) {\n adapter.calculateProperties();\n }\n }\n\n function doAdjustAfterFetch(rid) {\n const updates = processUpdates();\n\n viewport.onAfterPrepend(updates);\n\n if (isInvalid(rid)) {\n return;\n }\n\n updatePaddings(rid, updates);\n onRenderHandlersRunner();\n enqueueFetch(rid, updates);\n pending.shift();\n\n if (pending.length)\n fetch(rid);\n else {\n adapter.loading(false);\n bindEvents();\n adapter.calculateProperties();\n }\n }\n\n function fetch(rid) {\n if (pending[0]) {// scrolling down\n if (buffer.length && !viewport.shouldLoadBottom()) {\n doAdjustAfterFetch(rid);\n } else {\n fetchNext((result) => {\n if (isInvalid(rid)) {\n return;\n }\n\n if (result.length < bufferSize) {\n buffer.eof = true;\n }\n\n if (result.length > 0) {\n viewport.clipTop();\n buffer.append(result);\n }\n\n doAdjustAfterFetch(rid);\n });\n }\n } else { // scrolling up\n if (buffer.length && !viewport.shouldLoadTop()) {\n doAdjustAfterFetch(rid);\n } else {\n fetchPrevious((result) => {\n if (isInvalid(rid)) {\n return;\n }\n\n if (result.length < bufferSize) {\n buffer.bof = true;\n // log 'bof is reached'\n }\n\n if (result.length > 0) {\n if (buffer.length) {\n viewport.clipBottom();\n }\n buffer.prepend(result);\n }\n\n doAdjustAfterFetch(rid);\n });\n }\n }\n }\n\n function resizeAndScrollHandler() {\n if (!$rootScope.$$phase && !adapter.isLoading && !adapter.disabled) {\n\n enqueueFetch(ridActual);\n\n if (pending.length) {\n unbindEvents();\n } else {\n adapter.calculateProperties();\n !$scope.$$phase && $scope.$digest();\n }\n }\n }\n\n function wheelHandler(event) {\n if (!adapter.disabled) {\n const scrollTop = viewport[0].scrollTop;\n const yMax = viewport[0].scrollHeight - viewport[0].clientHeight;\n\n if ((scrollTop === 0 && !buffer.bof) || (scrollTop === yMax && !buffer.eof)) {\n event.preventDefault();\n }\n }\n }\n }\n\n }\n ]);\n"],"sourceRoot":""} \ No newline at end of file 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<= ref ? j <= ref : j >= ref; i = 1 <= ref ? ++j : --j) {\n if (children[i] === elem) {\n angular.element(children[i - 1]).after(newElem);\n return;\n }\n }\n throw new Error('invalid DOM structure ' + elem.outerHTML);\n }\n },\n height (value){\n var self;\n self = this;\n if (typeof value !== 'undefined') {\n if (angular.isNumber(value)) {\n value = value + 'px';\n }\n return css.call(self, 'height', value);\n } else {\n return getWidthHeight(this[0], 'height', 'base');\n }\n },\n outerHeight(option) {\n return getWidthHeight(this[0], 'height', option ? 'outerfull' : 'outer');\n },\n outerWidth(option) {\n return getWidthHeight(this[0], 'width', option ? 'outerfull' : 'outer');\n },\n\n /*\n The offset setter method is not implemented\n */\n offset(value) {\n let docElem, win;\n let self = this;\n let box = {\n top: 0,\n left: 0\n };\n let elem = self[0];\n let doc = elem && elem.ownerDocument;\n\n if (arguments.length) {\n if (value === undefined) {\n return self;\n }\n // TODO: implement setter\n throw new Error('offset setter method is not implemented');\n }\n\n if (!doc) {\n return;\n }\n\n docElem = doc.documentElement;\n\n // TODO: Make sure it's not a disconnected DOM node\n\n if (elem.getBoundingClientRect != null) {\n box = elem.getBoundingClientRect();\n }\n\n win = doc.defaultView || doc.parentWindow;\n\n return {\n top: box.top + (win.pageYOffset || docElem.scrollTop) - (docElem.clientTop || 0),\n left: box.left + (win.pageXOffset || docElem.scrollLeft) - (docElem.clientLeft || 0)\n };\n },\n scrollTop(value) {\n return scrollTo(this, 'top', value);\n },\n scrollLeft(value) {\n return scrollTo(this, 'left', value);\n }\n }, (value, key) => {\n if (!element.prototype[key]) {\n return element.prototype[key] = value;\n }\n });\n }\n\n}\n","const hideClassToken = 'ng-ui-scroll-hide';\n\nexport default class ElementRoutines {\n\n static addCSSRules() {\n const selector = '.' + hideClassToken;\n const rules = 'display: none';\n const sheet = document.styleSheets[0];\n let index;\n try {\n index = sheet.cssRules.length;\n } catch (err) {\n index = 0;\n }\n if('insertRule' in sheet) {\n sheet.insertRule(selector + '{' + rules + '}', index);\n }\n else if('addRule' in sheet) {\n sheet.addRule(selector, rules, index);\n }\n }\n\n constructor($injector, $q) {\n this.$animate = ($injector.has && $injector.has('$animate')) ? $injector.get('$animate') : null;\n this.isAngularVersionLessThen1_3 = angular.version.major === 1 && angular.version.minor < 3;\n this.$q = $q;\n }\n\n hideElement(wrapper) {\n wrapper.element.addClass(hideClassToken);\n }\n\n showElement(wrapper) {\n wrapper.element.removeClass(hideClassToken);\n }\n\n insertElement(newElement, previousElement) {\n previousElement.after(newElement);\n return [];\n }\n\n removeElement(wrapper) {\n wrapper.element.remove();\n wrapper.scope.$destroy();\n return [];\n }\n\n insertElementAnimated(newElement, previousElement) {\n if (!this.$animate) {\n return this.insertElement(newElement, previousElement);\n }\n\n if (this.isAngularVersionLessThen1_3) {\n const deferred = this.$q.defer();\n // no need for parent - previous element is never null\n this.$animate.enter(newElement, null, previousElement, () => deferred.resolve());\n\n return [deferred.promise];\n }\n\n // no need for parent - previous element is never null\n return [this.$animate.enter(newElement, null, previousElement)];\n }\n\n removeElementAnimated(wrapper) {\n if (!this.$animate) {\n return this.removeElement(wrapper);\n }\n\n if (this.isAngularVersionLessThen1_3) {\n const deferred = this.$q.defer();\n this.$animate.leave(wrapper.element, () => {\n wrapper.scope.$destroy();\n return deferred.resolve();\n });\n\n return [deferred.promise];\n }\n\n return [(this.$animate.leave(wrapper.element)).then(() => wrapper.scope.$destroy())];\n }\n}","export default function ScrollBuffer(elementRoutines, bufferSize, startIndex, rowHeight) {\n const buffer = Object.create(Array.prototype);\n\n angular.extend(buffer, {\n size: bufferSize,\n\n reset(startIndex) {\n buffer.remove(0, buffer.length);\n buffer.eof = false;\n buffer.bof = false;\n buffer.first = startIndex;\n buffer.next = startIndex;\n buffer.minIndex = startIndex; // Calculated when data is effectively accessed\n buffer.maxIndex = startIndex;\n buffer.minIndexUser = null; // as set by the user (datasource)\n buffer.maxIndexUser = null;\n },\n \n // PHIL: set the new index to be displayed without resettng the sroll and the calculated min/max\n // Note that this actually make sense with a fixed rowHeight when the scroll value can be calculated\n // for a # of rows\n resetStartIndex: function resetStartIndex(startIndex) {\n buffer.remove(0, buffer.length);\n buffer.eof = buffer.eof && startIndex==buffer.maxIndex;\n buffer.bof = buffer.bof && startIndex==buffer.maxIndex;\n buffer.first = startIndex;\n buffer.next = startIndex;\n },\n\n append(items) {\n items.forEach((item) => {\n ++buffer.next;\n buffer.insert('append', item);\n });\n buffer.maxIndex = buffer.eof ? buffer.next - 1 : Math.max(buffer.next - 1, buffer.maxIndex);\n },\n\n prepend(items) {\n items.reverse().forEach((item) => {\n --buffer.first;\n buffer.insert('prepend', item);\n });\n buffer.minIndex = buffer.bof ? buffer.minIndex = buffer.first : Math.min(buffer.first, buffer.minIndex);\n },\n\n /**\n * inserts wrapped element in the buffer\n * the first argument is either operation keyword (see below) or a number for operation 'insert'\n * for insert the number is the index for the buffer element the new one have to be inserted after\n * operations: 'append', 'prepend', 'insert', 'remove', 'update', 'none'\n */\n insert(operation, item, isTop) {\n const wrapper = {\n item: item\n };\n\n if (operation % 1 === 0) {// it is an insert\n wrapper.op = 'insert';\n buffer.splice(operation, 0, wrapper);\n if(isTop) {\n buffer.first--;\n }\n else {\n buffer.next++;\n }\n } else {\n wrapper.op = operation;\n switch (operation) {\n case 'append':\n buffer.push(wrapper);\n break;\n case 'prepend':\n buffer.unshift(wrapper);\n break;\n }\n }\n },\n\n // removes elements from buffer\n remove(arg1, arg2) {\n if (angular.isNumber(arg1)) {\n // removes items from arg1 (including) through arg2 (excluding)\n for (let i = arg1; i < arg2; i++) {\n elementRoutines.removeElement(buffer[i]);\n }\n return buffer.splice(arg1, arg2 - arg1);\n }\n // removes single item(wrapper) from the buffer\n buffer.splice(buffer.indexOf(arg1), 1);\n if(arg1._op === 'isTop' && buffer.first === this.getAbsMinIndex()) {\n this.incrementMinIndex();\n }\n else {\n this.decrementMaxIndex();\n }\n if(arg1._op === 'isTop') {\n buffer.first++;\n }\n else {\n buffer.next--;\n }\n if(!buffer.length) {\n buffer.first = 1;\n buffer.next = 1;\n }\n\n return elementRoutines.removeElementAnimated(arg1);\n },\n\n incrementMinIndex() {\n if(buffer.minIndexUser !== null) {\n if(buffer.minIndex > buffer.minIndexUser) {\n buffer.minIndexUser++;\n return;\n }\n if(buffer.minIndex === buffer.minIndexUser) {\n buffer.minIndexUser++;\n }\n }\n buffer.minIndex++;\n },\n\n decrementMaxIndex() {\n if(buffer.maxIndexUser !== null && buffer.maxIndex <= buffer.maxIndexUser) {\n buffer.maxIndexUser--;\n }\n buffer.maxIndex--;\n },\n\n getAbsMinIndex() {\n if(buffer.minIndexUser !== null) {\n return Math.min(buffer.minIndexUser, buffer.minIndex);\n }\n return buffer.minIndex;\n },\n\n getAbsMaxIndex() {\n if(buffer.maxIndexUser !== null) {\n return Math.max(buffer.maxIndexUser, buffer.maxIndex);\n }\n return buffer.maxIndex;\n },\n\n effectiveHeight(elements) {\n if (!elements.length) {\n return 0;\n }\n let top = Number.MAX_VALUE;\n let bottom = Number.NEGATIVE_INFINITY;\n elements.forEach((wrapper) => {\n if (wrapper.element[0].offsetParent) {\n // element style is not display:none\n top = Math.min(top, wrapper.element.offset().top);\n bottom = Math.max(bottom, wrapper.element.offset().top + (rowHeight || wrapper.element.outerHeight(true)));\n }\n });\n return Math.max(0, bottom - top);\n },\n\n getItems() {\n return buffer.filter(item => item.op === 'none');\n },\n\n getFirstItem() {\n const list = buffer.getItems();\n if (!list.length) {\n return null;\n }\n return list[0].item;\n },\n\n getLastItem() {\n const list = buffer.getItems();\n if (!list.length) {\n return null;\n }\n return list[list.length - 1].item;\n }\n\n });\n\n buffer.reset(startIndex);\n\n return buffer;\n}\n","// Can't just extend the Array, due to Babel does not support built-in classes extending\n// This solution was taken from https://stackoverflow.com/questions/46897414/es6-class-extends-array-workaround-for-es5-babel-transpile\nclass CacheProto {\n add(item) {\n for (let i = this.length - 1; i >= 0; i--) {\n if (this[i].index === item.scope.$index) {\n this[i].height = item.element.outerHeight();\n return;\n }\n }\n this.push({\n index: item.scope.$index,\n height: item.element.outerHeight()\n });\n this.sort((a, b) => ((a.index < b.index) ? -1 : ((a.index > b.index) ? 1 : 0)));\n }\n\n remove(argument, _isTop) {\n const index = argument % 1 === 0 ? argument : argument.scope.$index;\n const isTop = argument % 1 === 0 ? _isTop : argument._op === 'isTop';\n for (let i = this.length - 1; i >= 0; i--) {\n if (this[i].index === index) {\n this.splice(i, 1);\n break;\n }\n }\n if(!isTop) {\n for (let i = this.length - 1; i >= 0; i--) {\n if (this[i].index > index) {\n this[i].index--;\n }\n }\n }\n }\n\n clear() {\n this.length = 0;\n }\n}\n\nfunction Cache() {\n const instance = [];\n instance.push.apply(instance, arguments);\n Object.setPrototypeOf(instance, Cache.prototype);\n return instance;\n}\nCache.prototype = Object.create(Array.prototype);\nObject.getOwnPropertyNames(CacheProto.prototype).forEach(methodName =>\n Cache.prototype[methodName] = CacheProto.prototype[methodName]\n);\n\nfunction generateElement(template) {\n if(template.nodeType !== Node.ELEMENT_NODE) {\n throw new Error('ui-scroll directive requires an Element node for templating the view');\n }\n let element;\n switch (template.tagName.toLowerCase()) {\n case 'dl':\n throw new Error(`ui-scroll directive does not support <${template.tagName}> as a repeating tag: ${template.outerHTML}`);\n case 'tr':\n let table = angular.element('
    ');\n element = table.find('tr');\n break;\n case 'li':\n element = angular.element('
  • ');\n break;\n default:\n element = angular.element('
    ');\n }\n return element;\n}\n\n//\n// Padding represents the dummy element added to both the top and the bottom of the scrolling container\n// It holds the element, as well as a cache for the items (rows) height. In case of a fixed rowHeight, the \n// cache is not used and thus is not created.\n//\nclass Padding {\n constructor(template,useCache) {\n this.element = generateElement(template);\n if(useCache) {\n this.cache = new Cache();\n }\n }\n\n height() {\n // When called with a parameter, this sets the height of the padding\n return this.element.height.apply(this.element, arguments);\n }\n}\n\nexport default Padding;","import Padding from './padding';\n\nexport default function Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding, rowHeight) {\n let topPadding = null;\n let bottomPadding = null;\n const viewport = viewportController && viewportController.viewport ? viewportController.viewport : angular.element(window);\n const container = viewportController && viewportController.container ? viewportController.container : undefined;\n const scope = viewportController && viewportController.scope ? viewportController.scope : $rootScope;\n\n viewport.css({\n 'overflow-anchor': 'none',\n 'overflow-y': 'auto',\n 'display': 'block'\n });\n\n function bufferPadding() {\n return viewport.outerHeight() * padding; // some extra space to initiate preload\n }\n\n // \n // Viewport measurements\n //\n // +----------------+ 0\n // | top |\n // | padding |\n // +----------------+ topDataPos() [=topPadding.height]\n // | not visible |\n // | items |\n // +----------------+ topVisiblePos() [=viewport.scrollTop]\n // | |\n // | visible |\n // | items |\n // | |\n // +----------------+ bottomVisiblePos() [=viewport.scrollTop+viewport.height]\n // | not visible |\n // | items |\n // +----------------+ bottomDataPos() [=scrollHeight-bottomPadding.height]\n // | bottom |\n // | padding |\n // +----------------+ scrollHeight \n //\n // bufferPadding is some extra space we have top & bottom to allow infinite scrolling\n // bufferPadding = viewport.outerHeight() * padding\n //\n // bottomVisiblePos() - topVisiblePos() == viewport.outerHeight()\n \n\n angular.extend(viewport, {\n getScope() {\n return scope;\n },\n\n createPaddingElements(template) {\n topPadding = new Padding(template,!rowHeight);\n bottomPadding = new Padding(template,!rowHeight);\n element.before(topPadding.element);\n element.after(bottomPadding.element);\n topPadding.height(0);\n bottomPadding.height(0);\n },\n\n applyContainerStyle() {\n if (!container) {\n return true;\n }\n if(container !== viewport) {\n viewport.css('height', window.getComputedStyle(container[0]).height);\n }\n return viewport.height() > 0;\n },\n\n bottomDataPos() {\n let scrollHeight = viewport[0].scrollHeight;\n scrollHeight = scrollHeight != null ? scrollHeight : viewport[0].document.documentElement.scrollHeight;\n return scrollHeight - bottomPadding.height();\n },\n\n topDataPos() {\n return topPadding.height();\n },\n\n bottomVisiblePos() {\n return viewport.scrollTop() + viewport.outerHeight();\n },\n\n topVisiblePos() {\n return viewport.scrollTop();\n },\n\n insertElement(e, sibling) {\n return elementRoutines.insertElement(e, sibling || topPadding.element);\n },\n\n insertElementAnimated(e, sibling) {\n return elementRoutines.insertElementAnimated(e, sibling || topPadding.element);\n },\n\n shouldLoadBottom() {\n return !buffer.eof && viewport.bottomDataPos() < viewport.bottomVisiblePos() + bufferPadding();\n },\n\n clipBottom() {\n // clip the invisible items off the bottom\n let overage = 0;\n let emptySpaceHeight = viewport.bottomDataPos() - viewport.bottomVisiblePos() - bufferPadding();\n if(rowHeight) {\n overage = Math.min(buffer.length,Math.floor(emptySpaceHeight/rowHeight));\n } else {\n let itemHeight = 0;\n let overageHeight = 0;\n\n for (let i = buffer.length - 1; i >= 0; i--) {\n itemHeight = buffer[i].element.outerHeight(true);\n if (overageHeight + itemHeight > emptySpaceHeight) {\n break;\n }\n bottomPadding.cache.add(buffer[i]);\n overageHeight += itemHeight;\n overage++;\n }\n }\n\n if (overage > 0) {\n buffer.eof = false;\n buffer.remove(buffer.length - overage, buffer.length);\n buffer.next -= overage;\n viewport.adjustPaddings();\n }\n },\n\n shouldLoadTop() {\n return !buffer.bof && (viewport.topDataPos() > viewport.topVisiblePos() - bufferPadding());\n },\n\n clipTop() {\n // clip the invisible items off the top\n let overage = 0;\n let overageHeight = 0;\n let emptySpaceHeight = viewport.topVisiblePos() - viewport.topDataPos() - bufferPadding();\n if(rowHeight) {\n overage = Math.min(buffer.length,Math.floor(emptySpaceHeight/rowHeight));\n overageHeight = overage * rowHeight;\n } else {\n let itemHeight = 0;\n\n for (let i = 0; i < buffer.length; i++) {\n itemHeight = buffer[i].element.outerHeight(true);\n if (overageHeight + itemHeight > emptySpaceHeight) {\n break;\n }\n topPadding.cache.add(buffer[i]);\n overageHeight += itemHeight;\n overage++;\n }\n }\n\n if (overage > 0) {\n // we need to adjust top padding element before items are removed from top\n // to avoid strange behaviour of scroll bar during remove top items when we are at the very bottom\n topPadding.height(topPadding.height() + overageHeight);\n buffer.bof = false;\n buffer.remove(0, overage);\n buffer.first += overage;\n }\n },\n\n // PHIL: remove all the entries in the buffer without changing the scrollbar, nor the scroll position\n // and update the padding accordingly\n // It is designed to work with non fixed rowHeight, although it will need more tests in this area...\n scrollTo(first) {\n if(rowHeight) {\n first = Math.min(first, buffer.maxIndex);\n first = Math.max(first, buffer.minIndex);\n const min = buffer.getAbsMinIndex(); \n const max = buffer.getAbsMaxIndex();\n // Adjust the paddings before removing the elements to avoid touching the scroll top position\n topPadding.height((first-min)*rowHeight);\n bottomPadding.height(((max+1)-first)*rowHeight);\n buffer.resetStartIndex(first);\n } else {\n buffer.resetStartIndex(first);\n viewport.adjustPaddings();\n } \n },\n \n adjustPaddings() {\n if(rowHeight) {\n const min = buffer.getAbsMinIndex(); \n const max = buffer.getAbsMaxIndex();\n topPadding.height((buffer.first-min)*rowHeight);\n // PHIL: next points to the next possible item, while max is the index of the last one.\n // In order to make them compatible, we should add one to max\n // Also, it looks like buffer is not changing maxIndex when an element is inserted/appended\n // Not sure if this can have a consequence or not....\n bottomPadding.height(((max+1)-buffer.next)*rowHeight);\n return;\n }\n\n if (!buffer.length) {\n return;\n }\n\n // precise heights calculation based on items that are in buffer or that were in buffer once\n const visibleItemsHeight = buffer.reduce((summ, item) => summ + item.element.outerHeight(true), 0);\n let topPaddingHeight = 0, topCount = 0;\n topPadding.cache.forEach(item => {\n if(item.index < buffer.first) {\n topPaddingHeight += item.height;\n topCount++;\n }\n });\n \n let bottomPaddingHeight = 0, bottomCount = 0;\n bottomPadding.cache.forEach(item => {\n if(item.index >= buffer.next) {\n bottomPaddingHeight += item.height;\n bottomCount++;\n }\n });\n \n const totalHeight = visibleItemsHeight + topPaddingHeight + bottomPaddingHeight;\n const averageItemHeight = totalHeight / (topCount + bottomCount + buffer.length); \n\n // average heights calculation, items that have never been reached\n let adjustTopPadding = buffer.minIndexUser !== null && buffer.minIndex > buffer.minIndexUser;\n let adjustBottomPadding = buffer.maxIndexUser !== null && buffer.maxIndex < buffer.maxIndexUser;\n let topPaddingHeightAdd = adjustTopPadding ? (buffer.minIndex - buffer.minIndexUser) * averageItemHeight : 0;\n let bottomPaddingHeightAdd = adjustBottomPadding ? (buffer.maxIndexUser - buffer.maxIndex) * averageItemHeight : 0;\n\n // paddings combine adjustment\n topPadding.height(topPaddingHeight + topPaddingHeightAdd);\n bottomPadding.height(bottomPaddingHeight + bottomPaddingHeightAdd);\n },\n\n onAfterMinIndexSet(topPaddingHeightOld) {\n // additional scrollTop adjustment in case of datasource.minIndex external set\n if (buffer.minIndexUser !== null && buffer.minIndex > buffer.minIndexUser) {\n let diff = topPadding.height() - topPaddingHeightOld;\n viewport.scrollTop(viewport.scrollTop() + diff);\n while((diff -= viewport.scrollTop()) > 0) {\n bottomPadding.height(bottomPadding.height() + diff);\n viewport.scrollTop(viewport.scrollTop() + diff);\n }\n }\n },\n\n onAfterPrepend(updates) {\n if (!updates.prepended.length)\n return;\n const height = buffer.effectiveHeight(updates.prepended);\n const paddingHeight = topPadding.height() - height;\n if (paddingHeight >= 0) {\n topPadding.height(paddingHeight);\n }\n else {\n topPadding.height(0);\n viewport.scrollTop(viewport.scrollTop() - paddingHeight);\n }\n },\n\n resetTopPadding() {\n topPadding.height(0);\n if(topPadding.cache) {\n topPadding.cache.clear();\n }\n },\n\n resetBottomPadding() {\n bottomPadding.height(0);\n if(bottomPadding.cache) {\n bottomPadding.cache.clear();\n }\n },\n\n removeCacheItem(item, isTop) {\n if(topPadding.cache) {\n topPadding.cache.remove(item, isTop);\n }\n if(bottomPadding.cache) {\n bottomPadding.cache.remove(item, isTop);\n }\n },\n\n removeItem(item) {\n this.removeCacheItem(item);\n return buffer.remove(item);\n }\n });\n\n return viewport;\n}\n","class Adapter {\n\n constructor($scope, $parse, $attr, viewport, buffer, doAdjust, reload) {\n this.$parse = $parse;\n this.$attr = $attr;\n this.viewport = viewport;\n this.buffer = buffer;\n\n this.doAdjust = doAdjust;\n this.reload = reload;\n\n this.isLoading = false;\n this.disabled = false;\n\n const viewportScope = viewport.getScope();\n this.startScope = viewportScope.$parent ? viewportScope : $scope;\n\n this.publicContext = {};\n this.assignAdapter($attr.adapter);\n this.generatePublicContext();\n }\n\n assignAdapter(adapterAttr) {\n if (!adapterAttr || !(adapterAttr = adapterAttr.replace(/^\\s+|\\s+$/gm, ''))) {\n return;\n }\n let adapterOnScope;\n\n try {\n this.$parse(adapterAttr).assign(this.startScope, {});\n adapterOnScope = this.$parse(adapterAttr)(this.startScope);\n }\n catch (error) {\n error.message = `Angular ui-scroll Adapter assignment exception.\\n` +\n `Can't parse \"${adapterAttr}\" expression.\\n` +\n error.message;\n throw error;\n }\n\n angular.extend(adapterOnScope, this.publicContext);\n this.publicContext = adapterOnScope;\n }\n\n generatePublicContext() {\n // these methods will be accessible out of ui-scroll via user defined adapter\n const publicMethods = ['reload', 'applyUpdates', 'append', 'prepend', 'isBOF', 'isEOF', 'isEmpty'];\n for (let i = publicMethods.length - 1; i >= 0; i--) {\n this.publicContext[publicMethods[i]] = this[publicMethods[i]].bind(this);\n }\n\n // these read-only props will be accessible out of ui-scroll via user defined adapter\n const publicProps = ['isLoading', 'topVisible', 'topVisibleElement', 'topVisibleScope', 'bottomVisible', 'bottomVisibleElement', 'bottomVisibleScope'];\n for (let i = publicProps.length - 1; i >= 0; i--) {\n let property, attr = this.$attr[publicProps[i]];\n Object.defineProperty(this, publicProps[i], {\n get: () => property,\n set: (value) => {\n property = value;\n this.publicContext[publicProps[i]] = value;\n if (attr) {\n this.$parse(attr).assign(this.startScope, value);\n }\n }\n });\n }\n\n // read-only immediately calculated public properties\n const publicPropsImmediate = ['bufferFirst', 'bufferLast', 'bufferLength'];\n for (let i = publicPropsImmediate.length - 1; i >= 0; i--) {\n Object.defineProperty(this.publicContext, publicPropsImmediate[i], {\n get: () => this[publicPropsImmediate[i]]\n });\n }\n\n // non-read-only public property\n Object.defineProperty(this.publicContext, 'disabled', {\n get: () => this.disabled,\n set: (value) => (!(this.disabled = value)) ? this.doAdjust() : null\n });\n }\n\n loading(value) {\n this.isLoading = value;\n }\n\n isBOF() {\n return this.buffer.bof;\n }\n\n isEOF() {\n return this.buffer.eof;\n }\n\n isEmpty() {\n return !this.buffer.length;\n }\n\n get bufferLength() {\n return this.buffer.getItems().length;\n }\n\n get bufferFirst() {\n return this.buffer.getFirstItem();\n }\n\n get bufferLast() {\n return this.buffer.getLastItem();\n }\n\n append(newItems) {\n this.buffer.append(newItems);\n this.doAdjust();\n this.viewport.clipTop();\n this.viewport.clipBottom();\n }\n\n prepend(newItems) {\n this.buffer.prepend(newItems);\n this.doAdjust();\n this.viewport.clipTop();\n this.viewport.clipBottom();\n }\n\n applyUpdates(arg1, arg2, arg3) {\n if (typeof arg1 === 'function') {\n this.applyUpdatesFunc(arg1, arg2);\n } else {\n this.applyUpdatesIndex(arg1, arg2, arg3);\n }\n this.doAdjust();\n }\n\n applyUpdatesFunc(cb, options) {\n this.buffer.slice(0).forEach((wrapper) => {\n // we need to do it on the buffer clone, because buffer content\n // may change as we iterate through\n this.applyUpdate(wrapper, cb(wrapper.item, wrapper.scope, wrapper.element), options);\n });\n }\n\n applyUpdatesIndex(index, newItems, options = {}) {\n if (index % 1 !== 0) {\n throw new Error('applyUpdates - ' + index + ' is not a valid index (should be an integer)');\n }\n const _index = index - this.buffer.first;\n\n // apply updates only within buffer\n if (_index >= 0 && _index < this.buffer.length) {\n this.applyUpdate(this.buffer[_index], newItems, options);\n }\n // out-of-buffer case: deletion may affect Paddings\n else if(index >= this.buffer.getAbsMinIndex() && index <= this.buffer.getAbsMaxIndex()) {\n if(angular.isArray(newItems) && !newItems.length) {\n this.viewport.removeCacheItem(index, !options.immutableTop && index === this.buffer.minIndex);\n if (!options.immutableTop && index === this.buffer.getAbsMinIndex()) {\n this.buffer.incrementMinIndex();\n }\n else {\n this.buffer.decrementMaxIndex();\n }\n }\n }\n }\n\n applyUpdate(wrapper, newItems, options = {}) {\n if (!angular.isArray(newItems)) {\n return;\n }\n let position = this.buffer.indexOf(wrapper);\n if (!newItems.reverse().some(newItem => newItem === wrapper.item)) {\n wrapper.op = 'remove';\n if (!options.immutableTop && position === 0 && !newItems.length) {\n wrapper._op = 'isTop'; // to catch \"first\" edge case on remove\n }\n }\n newItems.forEach((newItem) => {\n if (newItem === wrapper.item) {\n position--;\n } else {\n // 3 parameter (isTop) is to catch \"first\" edge case on insert\n this.buffer.insert(position + 1, newItem, !options.immutableTop && position === -1);\n }\n });\n }\n\n calculateProperties() {\n let rowTop = null, topHeight = 0;\n let topDone = false, bottomDone = false;\n const length = this.buffer.length;\n\n for (let i = 0; i < length; i++) {\n const item = this.buffer[i];\n const itemTop = item.element.offset().top;\n\n if (rowTop !== itemTop) { // a new row condition\n const itemHeight = item.element.outerHeight(true);\n const top = this.viewport.topDataPos() + topHeight + itemHeight;\n\n if (!topDone && top > this.viewport.topVisiblePos()) {\n topDone = true;\n this['topVisible'] = item.item;\n this['topVisibleElement'] = item.element;\n this['topVisibleScope'] = item.scope;\n }\n if (!bottomDone && (top >= this.viewport.bottomVisiblePos() || (i === length - 1 && this.isEOF()))) {\n bottomDone = true;\n this['bottomVisible'] = item.item;\n this['bottomVisibleElement'] = item.element;\n this['bottomVisibleScope'] = item.scope;\n }\n topHeight += itemHeight;\n }\n rowTop = itemTop;\n\n if (topDone && bottomDone) {\n break;\n }\n }\n }\n\n}\n\nexport default Adapter;\n","import JQLiteExtras from './modules/jqLiteExtras';\nimport ElementRoutines from './modules/elementRoutines.js';\nimport ScrollBuffer from './modules/buffer.js';\nimport Viewport from './modules/viewport.js';\nimport Adapter from './modules/adapter.js';\n\nangular.module('ui.scroll', [])\n\n .constant('JQLiteExtras', JQLiteExtras)\n .run(['JQLiteExtras', (JQLiteExtras) => {\n const elt = angular.element;\n !(window.jQuery && elt.fn && elt.fn.jquery) ? (new JQLiteExtras()).registerFor(elt) : null;\n ElementRoutines.addCSSRules();\n }])\n\n .directive('uiScrollViewport', function () {\n return {\n restrict: 'A',\n controller: [\n '$scope',\n '$element',\n function (scope, element) {\n this.container = element;\n this.viewport = element;\n this.scope = scope;\n\n angular.forEach(element.children(), child => {\n if (child.tagName.toLowerCase() === 'tbody') {\n this.viewport = angular.element(child);\n }\n });\n\n return this;\n }\n ]\n };\n })\n\n .directive('uiScroll', [\n '$log',\n '$injector',\n '$rootScope',\n '$timeout',\n '$interval',\n '$q',\n '$parse',\n function (console, $injector, $rootScope, $timeout, $interval, $q, $parse) {\n\n return {\n require: ['?^uiScrollViewport'],\n restrict: 'A',\n transclude: 'element',\n priority: 1000,\n terminal: true,\n link: link\n };\n\n function link($scope, element, $attr, controllers, linker) {\n const match = $attr.uiScroll.match(/^\\s*(\\w+)\\s+in\\s+([(\\w|\\$)\\.]+)\\s*$/);\n if (!match) {\n throw new Error('Expected uiScroll in form of \\'_item_ in _datasource_\\' but got \\'' + $attr.uiScroll + '\\'');\n }\n\n function parseNumber(value, defaultValue, isFloat) {\n if (!isFloat) {\n value = value === null ? defaultValue : Math.floor(value);\n }\n return isNaN(value) ? defaultValue : value;\n }\n\n function parseNumericAttr(value, defaultValue, isFloat) {\n const result = $parse(value)($scope);\n return parseNumber(result, defaultValue, isFloat);\n }\n\n const BUFFER_MIN = 3; // Minimum size of the data source request\n const BUFFER_DEFAULT = 10; // Default datasource request size\n const PADDING_MIN = 0.3; // Mininum # of rows in the padding area\n const PADDING_DEFAULT = 0.5; // Default # of rows in the padding area\n const START_INDEX_DEFAULT = 1; // Default start index when requestng the first data block\n const MAX_VIEWPORT_DELAY = 500; // Max time wait (ms) to get the viewport with an height>0\n const VIEWPORT_POLLING_INTERVAL = 50; // Interval used to check the initial viewport height\n\n let datasource = null;\n const itemName = match[1]; // Name of the index variable to publish\n const datasourceName = match[2]; // Name of the datasource to request the rows from\n const viewportController = controllers[0]; // ViewportController, as specified in the require option (http://websystique.com/angularjs/angularjs-custom-directives-controllers-require-option-guide/)\n const bufferSize = Math.max(BUFFER_MIN, parseNumericAttr($attr.bufferSize, BUFFER_DEFAULT)); \n const padding = Math.max(PADDING_MIN, parseNumericAttr($attr.padding, PADDING_DEFAULT, true));\n let startIndex = parseNumericAttr($attr.startIndex, START_INDEX_DEFAULT);\n\n // PHIL: Provide a fixed row height\n // \n const rowHeight = parseNumericAttr($attr.rowHeight, null, false);\n\n // PHIL: Read the visibility watch option, true by default\n const allowVisibilityWatch = $attr.allowVisibilityWatch!=='false';\n\n // Revision IDs\n // \n let ridActual = 0; // current data revision id\n let pending = [];\n\n const elementRoutines = new ElementRoutines($injector, $q);\n const buffer = new ScrollBuffer(elementRoutines, bufferSize, startIndex, rowHeight);\n const viewport = new Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding, rowHeight);\n const adapter = new Adapter($scope, $parse, $attr, viewport, buffer, doAdjust, reload);\n\n if (viewportController) {\n viewportController.adapter = adapter;\n }\n\n // Currently, we only debounce the scroll events when a fixed rowHeight is provided\n // as the unit tests will have to be adapted to support this feature\n let scPreviousScrollTop=-1;\n\n const isDatasourceValid = () =>\n Object.prototype.toString.call(datasource) === '[object Object]' && typeof datasource.get === 'function';\n\n datasource = $parse(datasourceName)($scope); // try to get datasource on scope\n if (!isDatasourceValid()) {\n datasource = $injector.get(datasourceName); // try to inject datasource as service\n if (!isDatasourceValid()) {\n throw new Error(datasourceName + ' is not a valid datasource');\n }\n }\n\n let onRenderHandlers = [];\n function onRenderHandlersRunner() {\n onRenderHandlers.forEach(handler => handler.run());\n onRenderHandlers = [];\n }\n function persistDatasourceIndex(datasource, propName) {\n let getter;\n // need to postpone min/maxIndexUser processing if the view is empty\n if(angular.isNumber(datasource[propName])) {\n getter = datasource[propName];\n if(angular.isNumber(getter)) {\n onRenderHandlers = onRenderHandlers.filter(handler => handler.id !== propName);\n onRenderHandlers.push({\n id: propName,\n run: () => datasource[propName] = getter\n });\n }\n }\n }\n\n function defineDatasourceIndex(datasource, propName, propUserName) {\n const descriptor = Object.getOwnPropertyDescriptor(datasource, propName);\n if (descriptor && (descriptor.set || descriptor.get)) {\n return;\n }\n let getter;\n persistDatasourceIndex(datasource, propName);\n Object.defineProperty(datasource, propName, {\n set: (value) => {\n getter = value;\n if(pending.length && !buffer.length) {\n persistDatasourceIndex(datasource, propName);\n return;\n }\n buffer[propUserName] = value;\n const topPaddingHeightOld = viewport.topDataPos();\n viewport.adjustPaddings();\n if (propName === 'minIndex') {\n viewport.onAfterMinIndexSet(topPaddingHeightOld);\n }\n },\n get: () => getter\n });\n }\n\n defineDatasourceIndex(datasource, 'minIndex', 'minIndexUser');\n defineDatasourceIndex(datasource, 'maxIndex', 'maxIndexUser');\n\n const fetchNext = (datasource.get.length !== 2) ?\n (success) => datasource.get(buffer.next, bufferSize, success) :\n (success) => {\n datasource.get({\n index: buffer.next,\n append: buffer.length ? buffer[buffer.length - 1].item : void 0,\n count: bufferSize\n }, success);\n };\n\n const fetchPrevious = (datasource.get.length !== 2) ?\n (success) => datasource.get(buffer.first - bufferSize, bufferSize, success) :\n (success) => {\n datasource.get({\n index: buffer.first - bufferSize,\n prepend: buffer.length ? buffer[0].item : void 0,\n count: bufferSize\n }, success);\n };\n\n const initialize = () => {\n let tryCount = 0;\n if(!viewport.applyContainerStyle()) {\n const timer = $interval(() => {\n tryCount++;\n if(viewport.applyContainerStyle()) {\n $interval.cancel(timer);\n doAdjust();\n }\n if(tryCount * VIEWPORT_POLLING_INTERVAL >= MAX_VIEWPORT_DELAY) {\n $interval.cancel(timer);\n throw Error(`ui-scroll directive requires a viewport with non-zero height in ${MAX_VIEWPORT_DELAY}ms`);\n }\n }, VIEWPORT_POLLING_INTERVAL);\n }\n else {\n doAdjust();\n }\n };\n\n /**\n * Build padding elements\n *\n * Calling linker is the only way I found to get access to the tag name of the template\n * to prevent the directive scope from pollution a new scope is created and destroyed\n * right after the builder creation is completed\n */\n linker((clone, scope) => {\n viewport.createPaddingElements(clone[0]);\n // we do not include the clone in the DOM. It means that the nested directives will not\n // be able to reach the parent directives, but in this case it is intentional because we\n // created the clone to access the template tag name\n scope.$destroy();\n clone.remove();\n });\n\n $scope.$on('$destroy', () => {\n unbindEvents();\n viewport.unbind('mousewheel', wheelHandler);\n });\n\n viewport.bind('mousewheel', wheelHandler);\n\n initialize();\n\n /* Private function definitions */\n\n function isInvalid(rid) {\n return (rid && rid !== ridActual) || $scope.$$destroyed;\n }\n\n function bindEvents() {\n viewport.bind('resize', resizeAndScrollHandler);\n viewport.bind('scroll', resizeAndScrollHandler);\n // If a scroll event happened while the handler was not bounded, emit the scroll\n if(isPendingScroll()) {\n // Do it immediately\n _resizeAndScrollHandler();\n }\n }\n\n function unbindEvents() {\n viewport.unbind('resize', resizeAndScrollHandler);\n viewport.unbind('scroll', resizeAndScrollHandler);\n }\n\n function reload() {\n unbindEvents();\n viewport.resetTopPadding();\n viewport.resetBottomPadding();\n if (arguments.length) {\n startIndex = parseNumber(arguments[0], START_INDEX_DEFAULT, false);\n }\n buffer.reset(startIndex);\n scPreviousScrollTop = -1; // Avoid isScrollPending() to be true\n persistDatasourceIndex(datasource, 'minIndex');\n persistDatasourceIndex(datasource, 'maxIndex');\n doAdjust();\n }\n\n function scrollTo(first) {\n unbindEvents();\n viewport.scrollTo(first);\n doAdjust();\n }\n\n function isElementVisible(wrapper) {\n return (rowHeight || wrapper.element.height()) && wrapper.element[0].offsetParent;\n }\n\n function visibilityWatcher(wrapper) {\n if (isElementVisible(wrapper)) {\n buffer.forEach((item) => {\n if (typeof item.unregisterVisibilityWatcher === 'function') {\n item.unregisterVisibilityWatcher();\n delete item.unregisterVisibilityWatcher;\n }\n });\n if (!pending.length) {\n $timeout(() => doAdjust());\n }\n }\n }\n\n function insertWrapperContent(wrapper, insertAfter) {\n createElement(wrapper, insertAfter, viewport.insertElement);\n if (allowVisibilityWatch && !isElementVisible(wrapper)) {\n wrapper.unregisterVisibilityWatcher = wrapper.scope.$watch(() => visibilityWatcher(wrapper));\n }\n if (allowVisibilityWatch) {\n elementRoutines.hideElement(wrapper); // hide inserted elements before data binding\n }\n }\n\n function createElement(wrapper, insertAfter, insertElement) {\n let promises = null;\n const sibling = (insertAfter > 0) ? buffer[insertAfter - 1].element : undefined;\n linker((clone, scope) => {\n promises = insertElement(clone, sibling);\n wrapper.element = clone;\n wrapper.scope = scope;\n scope[itemName] = wrapper.item;\n });\n // ui-scroll-grid apply\n if (adapter.transform) {\n const tdInitializer = wrapper.scope.uiScrollTdInitializer;\n if (tdInitializer && tdInitializer.linking) {\n adapter.transform(wrapper.scope, wrapper.element);\n } else {\n wrapper.scope.uiScrollTdInitializer = {\n onLink: () => adapter.transform(wrapper.scope, wrapper.element),\n scope: wrapper.scope\n };\n }\n }\n return promises;\n }\n\n function updateDOM() {\n let promises = [];\n const toBePrepended = [];\n const toBeRemoved = [];\n const inserted = [];\n\n buffer.forEach((wrapper, i) => {\n switch (wrapper.op) {\n case 'prepend':\n toBePrepended.unshift(wrapper);\n break;\n case 'append':\n insertWrapperContent(wrapper, i);\n wrapper.op = 'none';\n inserted.push(wrapper);\n break;\n case 'insert':\n promises = promises.concat(createElement(wrapper, i, viewport.insertElementAnimated));\n wrapper.op = 'none';\n inserted.push(wrapper);\n break;\n case 'remove':\n toBeRemoved.push(wrapper);\n }\n });\n\n toBeRemoved.forEach((wrapper) => promises = promises.concat(viewport.removeItem(wrapper)));\n\n if (toBePrepended.length)\n toBePrepended.forEach((wrapper) => {\n insertWrapperContent(wrapper);\n wrapper.op = 'none';\n });\n\n buffer.forEach((item, i) => item.scope.$index = buffer.first + i);\n\n return {\n prepended: toBePrepended,\n removed: toBeRemoved,\n inserted: inserted,\n animated: promises\n };\n\n }\n\n // Adjust the viewport paddings\n // \n function updatePaddings(rid, updates) {\n // schedule another doAdjust after animation completion\n if (updates.animated.length) {\n $q.all(updates.animated).then(() => {\n viewport.adjustPaddings();\n doAdjust(rid);\n });\n } else {\n viewport.adjustPaddings();\n }\n }\n\n function enqueueFetch(rid, updates) {\n // If there is a scroll pending, we don't enqueue the fetch as the scroll might be an absolute scroll\n // So we don't need to load top or bottom\n // This happens when there is a scroll frenzi, and the $digest is slow enough, so it stacks the calls without\n // giving a chance to the scroll event to be emitted and processed.\n if(isPendingScroll()) {\n return;\n }\n\n if (viewport.shouldLoadBottom()) {\n if (!updates || buffer.effectiveHeight(updates.inserted) > 0) {\n // this means that at least one item appended in the last batch has height > 0\n if (pending.push(true) === 1) {\n adapter.loading(true);\n fetch(rid);\n }\n }\n } else if (viewport.shouldLoadTop()) {\n if ((!updates || buffer.effectiveHeight(updates.prepended) > 0) || pending[0]) {\n // this means that at least one item appended in the last batch has height > 0\n // pending[0] = true means that previous fetch was appending. We need to force at least one prepend\n // BTW there will always be at least 1 element in the pending array because bottom is fetched first\n if (pending.push(false) === 1) {\n adapter.loading(true);\n fetch(rid);\n }\n }\n }\n }\n\n function processUpdates() {\n const updates = updateDOM();\n\n // We need the item bindings to be processed before we can do adjustments\n // If there are no changes and the row-height is static, then ignore it!\n const changes = updates.animated.length+updates.inserted.length+updates.prepended.length+updates.removed.length;\n if(changes || !rowHeight) {\n !$scope.$$phase && !$rootScope.$$phase && $scope.$digest();\n }\n\n if (allowVisibilityWatch) {\n updates.inserted.forEach(w => elementRoutines.showElement(w));\n updates.prepended.forEach(w => elementRoutines.showElement(w));\n }\n\n return updates;\n }\n\n function doAdjust(rid) {\n if (!rid) { // dismiss pending requests\n pending = [];\n rid = ++ridActual;\n }\n\n const updates = processUpdates();\n\n if (isInvalid(rid)) {\n return;\n }\n\n updatePaddings(rid, updates);\n enqueueFetch(rid);\n\n if (!pending.length) {\n adapter.calculateProperties();\n }\n }\n\n function doAdjustAfterFetch(rid) {\n const updates = processUpdates();\n\n viewport.onAfterPrepend(updates);\n\n if (isInvalid(rid)) {\n return;\n }\n\n updatePaddings(rid, updates);\n onRenderHandlersRunner();\n enqueueFetch(rid, updates);\n pending.shift();\n\n if (pending.length)\n fetch(rid);\n else {\n adapter.loading(false);\n bindEvents();\n adapter.calculateProperties();\n }\n }\n\n function fetch(rid) {\n if (pending[0]) {// scrolling down\n if (buffer.length && !viewport.shouldLoadBottom()) {\n doAdjustAfterFetch(rid);\n } else {\n fetchNext((result) => {\n if (isInvalid(rid)) {\n return;\n }\n\n if (result.length < bufferSize) {\n buffer.eof = true;\n }\n\n if (result.length > 0) {\n viewport.clipTop();\n buffer.append(result);\n }\n\n doAdjustAfterFetch(rid);\n });\n }\n } else { // scrolling up\n if (buffer.length && !viewport.shouldLoadTop()) {\n doAdjustAfterFetch(rid);\n } else {\n fetchPrevious((result) => {\n if (isInvalid(rid)) {\n return;\n }\n\n if (result.length < bufferSize) {\n buffer.bof = true;\n // log 'bof is reached'\n }\n\n if (result.length > 0) {\n if (buffer.length) {\n viewport.clipBottom();\n }\n buffer.prepend(result);\n }\n\n doAdjustAfterFetch(rid);\n });\n }\n }\n }\n \n function isPendingScroll() {\n if(rowHeight) {\n // Maybe the scroll changed but the event has *not* yet being dispatched\n // because of the $digest running and taking to long\n var sc = viewport.scrollTop();\n if(sc!=scPreviousScrollTop && scPreviousScrollTop>=0) {\n return true;\n }\n }\n return false;\n }\n\n // Deboucing the scroll events avois intermediate $digest when scrolling fast\n let scTimer;\n function resizeAndScrollHandler() {\n if (rowHeight) {\n if (scTimer) clearTimeout(scTimer);\n scTimer = setTimeout(_resizeAndScrollHandler, 20);\n } else {\n _resizeAndScrollHandler();\n }\n }\n\n function _resizeAndScrollHandler() {\n if (!$rootScope.$$phase && !adapter.isLoading && !adapter.disabled) {\n // Absolute positioning currently only works when a fixed rowHeight is provided\n // We might isolate the averegaRowHeight calculation in the viewport to provide an estimate\n // and provide a reasonable behavior with variable height as well\n if(rowHeight) {\n scPreviousScrollTop = viewport.scrollTop();\n let newFirst = Math.floor(viewport.scrollTop() / rowHeight) + buffer.minIndex;\n newFirst = Math.max(buffer.minIndex, Math.min(buffer.maxIndex,newFirst)); // Bound the scroll\n if (newFirst=buffer.next) {\n scrollTo(newFirst);\n return;\n } \n }\n\n enqueueFetch(ridActual);\n\n if (pending.length) {\n unbindEvents();\n } else {\n adapter.calculateProperties();\n if(!rowHeight) {\n // The digest is forced to calculate the height, which is not necessary when the height is knowm\n !$scope.$$phase && $scope.$digest();\n }\n }\n }\n }\n\n function wheelHandler(event) {\n if (!adapter.disabled) {\n const scrollTop = viewport[0].scrollTop;\n const yMax = viewport[0].scrollHeight - viewport[0].clientHeight;\n\n if ((scrollTop === 0 && !buffer.bof) || (scrollTop === yMax && !buffer.eof)) {\n event.preventDefault();\n }\n }\n }\n }\n\n }\n ]);\n"],"sourceRoot":""} \ No newline at end of file diff --git a/package-lock.json b/package-lock.json index 10aaf113..d7cda5ec 100644 --- a/package-lock.json +++ b/package-lock.json @@ -3288,8 +3288,7 @@ "version": "2.1.1", "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-2.1.1.tgz", "integrity": "sha1-w7M6te42DYbg5ijwRorn7yfWVN8=", - "dev": true, - "optional": true + "dev": true }, "aproba": { "version": "1.2.0", @@ -3313,15 +3312,13 @@ "version": "1.0.0", "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.0.tgz", "integrity": "sha1-ibTRmasr7kneFk6gK4nORi1xt2c=", - "dev": true, - "optional": true + "dev": true }, "brace-expansion": { "version": "1.1.11", "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.11.tgz", "integrity": "sha512-iCuPHDFgrHX7H2vEI/5xpz07zSHB00TpugqhmYtVmMO6518mCuRMoOYFldEBl0g187ufozdaHgWKcYFb61qGiA==", "dev": true, - "optional": true, "requires": { "balanced-match": "^1.0.0", "concat-map": "0.0.1" @@ -3338,22 +3335,19 @@ "version": "1.1.0", "resolved": "https://registry.npmjs.org/code-point-at/-/code-point-at-1.1.0.tgz", "integrity": "sha1-DQcLTQQ6W+ozovGkDi7bPZpMz3c=", - "dev": true, - "optional": true + "dev": true }, "concat-map": { "version": "0.0.1", "resolved": "https://registry.npmjs.org/concat-map/-/concat-map-0.0.1.tgz", "integrity": "sha1-2Klr13/Wjfd5OnMDajug1UBdR3s=", - "dev": true, - "optional": true + "dev": true }, "console-control-strings": { "version": "1.1.0", "resolved": "https://registry.npmjs.org/console-control-strings/-/console-control-strings-1.1.0.tgz", "integrity": "sha1-PXz0Rk22RG6mRL9LOVB/mFEAjo4=", - "dev": true, - "optional": true + "dev": true }, "core-util-is": { "version": "1.0.2", @@ -3484,8 +3478,7 @@ "version": "2.0.3", "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.3.tgz", "integrity": "sha1-Yzwsg+PaQqUC9SRmAiSA9CCCYd4=", - "dev": true, - "optional": true + "dev": true }, "ini": { "version": "1.3.5", @@ -3499,7 +3492,6 @@ "resolved": "https://registry.npmjs.org/is-fullwidth-code-point/-/is-fullwidth-code-point-1.0.0.tgz", "integrity": "sha1-754xOG8DGn8NZDr4L95QxFfvAMs=", "dev": true, - "optional": true, "requires": { "number-is-nan": "^1.0.0" } @@ -3516,7 +3508,6 @@ "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-3.0.4.tgz", "integrity": "sha512-yJHVQEhyqPLUTgt9B83PXu6W3rx4MvvHvSUvToogpwoGDOUQ+yDrR0HRot+yOCdCO7u4hX3pWft6kWBBcqh0UA==", "dev": true, - "optional": true, "requires": { "brace-expansion": "^1.1.7" } @@ -3525,15 +3516,13 @@ "version": "0.0.8", "resolved": "https://registry.npmjs.org/minimist/-/minimist-0.0.8.tgz", "integrity": "sha1-hX/Kv8M5fSYluCKCYuhqp6ARsF0=", - "dev": true, - "optional": true + "dev": true }, "minipass": { "version": "2.3.5", "resolved": "https://registry.npmjs.org/minipass/-/minipass-2.3.5.tgz", "integrity": "sha512-Gi1W4k059gyRbyVUZQ4mEqLm0YIUiGYfvxhF6SIlk3ui1WVxMTGfGdQ2SInh3PDrRTVvPKgULkpJtT4RH10+VA==", "dev": true, - "optional": true, "requires": { "safe-buffer": "^5.1.2", "yallist": "^3.0.0" @@ -3554,7 +3543,6 @@ "resolved": "https://registry.npmjs.org/mkdirp/-/mkdirp-0.5.1.tgz", "integrity": "sha1-MAV0OOrGz3+MR2fzhkjWaX11yQM=", "dev": true, - "optional": true, "requires": { "minimist": "0.0.8" } @@ -3643,8 +3631,7 @@ "version": "1.0.1", "resolved": "https://registry.npmjs.org/number-is-nan/-/number-is-nan-1.0.1.tgz", "integrity": "sha1-CXtgK1NCKlIsGvuHkDGDNpQaAR0=", - "dev": true, - "optional": true + "dev": true }, "object-assign": { "version": "4.1.1", @@ -3658,7 +3645,6 @@ "resolved": "https://registry.npmjs.org/once/-/once-1.4.0.tgz", "integrity": "sha1-WDsap3WWHUsROsF9nFC6753Xa9E=", "dev": true, - "optional": true, "requires": { "wrappy": "1" } @@ -3754,8 +3740,7 @@ "version": "5.1.2", "resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.1.2.tgz", "integrity": "sha512-Gd2UZBJDkXlY7GbJxfsE8/nvKkUEU1G38c1siN6QP6a9PT9MmHB8GnpscSmMJSoF8LOIrt8ud/wPtojys4G6+g==", - "dev": true, - "optional": true + "dev": true }, "safer-buffer": { "version": "2.1.2", @@ -3797,7 +3782,6 @@ "resolved": "https://registry.npmjs.org/string-width/-/string-width-1.0.2.tgz", "integrity": "sha1-EYvfW4zcUaKn5w0hHgfisLmxB9M=", "dev": true, - "optional": true, "requires": { "code-point-at": "^1.0.0", "is-fullwidth-code-point": "^1.0.0", @@ -3819,7 +3803,6 @@ "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-3.0.1.tgz", "integrity": "sha1-ajhfuIU9lS1f8F0Oiq+UJ43GPc8=", "dev": true, - "optional": true, "requires": { "ansi-regex": "^2.0.0" } @@ -3868,15 +3851,13 @@ "version": "1.0.2", "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz", "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8=", - "dev": true, - "optional": true + "dev": true }, "yallist": { "version": "3.0.3", "resolved": "https://registry.npmjs.org/yallist/-/yallist-3.0.3.tgz", "integrity": "sha512-S+Zk8DEWE6oKpV+vI3qWkaK+jSbIK86pCwe2IF/xwIpQ8jEuxpw9NyaGjmp9+BoJv5FV2piqCDcoCtStppiq2A==", - "dev": true, - "optional": true + "dev": true } } }, @@ -4838,9 +4819,9 @@ } }, "lodash": { - "version": "4.17.14", - "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.14.tgz", - "integrity": "sha512-mmKYbW3GLuJeX+iGP+Y7Gp1AiGHGbXHCOh/jZmrawMmsE7MS4znI3RL2FsjbqOyMayHInjOeykW7PEajUk1/xw==", + "version": "4.17.11", + "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.11.tgz", + "integrity": "sha512-cQKh8igo5QUhZ7lg38DYWAxMvjSAKG0A8wGSVimP07SIUEK2UO+arSRKbRZWtelMtN5V0Hkwh5ryOto/SshYIg==", "dev": true }, "log-symbols": { @@ -5120,9 +5101,9 @@ } }, "mixin-deep": { - "version": "1.3.2", - "resolved": "https://registry.npmjs.org/mixin-deep/-/mixin-deep-1.3.2.tgz", - "integrity": "sha512-WRoDn//mXBiJ1H40rqa3vH0toePwSsGb45iInWlTySa+Uu4k3tYUSxa2v1KqAiLtvlrSzaExqS1gtk96A9zvEA==", + "version": "1.3.1", + "resolved": "https://registry.npmjs.org/mixin-deep/-/mixin-deep-1.3.1.tgz", + "integrity": "sha512-8ZItLHeEgaqEvd5lYBXfm4EZSFCX29Jb9K+lAHhDKzReKBQKj3R+7NOF6tjqYi9t4oI8VUfaWITJQm86wnXGNQ==", "dev": true, "requires": { "for-in": "^1.0.2", @@ -6369,9 +6350,9 @@ "dev": true }, "set-value": { - "version": "2.0.1", - "resolved": "https://registry.npmjs.org/set-value/-/set-value-2.0.1.tgz", - "integrity": "sha512-JxHc1weCN68wRY0fhCoXpyK55m/XPHafOmK4UWD7m2CI14GMcFypt4w/0+NV5f/ZMby2F6S2wwA7fgynh9gWSw==", + "version": "2.0.0", + "resolved": "https://registry.npmjs.org/set-value/-/set-value-2.0.0.tgz", + "integrity": "sha512-hw0yxk9GT/Hr5yJEYnHNKYXkIA8mVJgd9ditYZCe16ZczcaELYYcfvaXesNACk2O8O0nTiPQcQhGUQj8JLzeeg==", "dev": true, "requires": { "extend-shallow": "^2.0.1", @@ -7411,15 +7392,38 @@ "dev": true }, "union-value": { - "version": "1.0.1", - "resolved": "https://registry.npmjs.org/union-value/-/union-value-1.0.1.tgz", - "integrity": "sha512-tJfXmxMeWYnczCVs7XAEvIV7ieppALdyepWMkHkwciRpZraG/xwT+s2JN8+pr1+8jCRf80FFzvr+MpQeeoF4Xg==", + "version": "1.0.0", + "resolved": "https://registry.npmjs.org/union-value/-/union-value-1.0.0.tgz", + "integrity": "sha1-XHHDTLW61dzr4+oM0IIHulqhrqQ=", "dev": true, "requires": { "arr-union": "^3.1.0", "get-value": "^2.0.6", "is-extendable": "^0.1.1", - "set-value": "^2.0.1" + "set-value": "^0.4.3" + }, + "dependencies": { + "extend-shallow": { + "version": "2.0.1", + "resolved": "https://registry.npmjs.org/extend-shallow/-/extend-shallow-2.0.1.tgz", + "integrity": "sha1-Ua99YUrZqfYQ6huvu5idaxxWiQ8=", + "dev": true, + "requires": { + "is-extendable": "^0.1.0" + } + }, + "set-value": { + "version": "0.4.3", + "resolved": "https://registry.npmjs.org/set-value/-/set-value-0.4.3.tgz", + "integrity": "sha1-fbCPnT0i3H945Trzw79GZuzfzPE=", + "dev": true, + "requires": { + "extend-shallow": "^2.0.1", + "is-extendable": "^0.1.1", + "is-plain-object": "^2.0.1", + "to-object-path": "^0.3.0" + } + } } }, "unique-filename": { diff --git a/package.json b/package.json index c9f3ef8c..fa219e3a 100644 --- a/package.json +++ b/package.json @@ -26,6 +26,7 @@ "hint-test": "jshint --verbose test", "hint-src": "jshint --verbose src", "build": "npm run hint-src && npm run prod-build && npm run hint-test && npm run prod-test", + "build-dev": "npm run hint-src && npm run prod-build", "dev": "npm-run-all --parallel dev-server dev-test", "test": "npm run dev-test", "start": "npm run dev-server" diff --git a/src/modules/adapter.js b/src/modules/adapter.js index 09e8767a..fc4c7f5f 100644 --- a/src/modules/adapter.js +++ b/src/modules/adapter.js @@ -1,203 +1,223 @@ -class Adapter { - - constructor($scope, $parse, $attr, viewport, buffer, doAdjust, reload) { - this.$parse = $parse; - this.$attr = $attr; - this.viewport = viewport; - this.buffer = buffer; - - this.doAdjust = doAdjust; - this.reload = reload; - - this.isLoading = false; - this.disabled = false; - - const viewportScope = viewport.getScope(); - this.startScope = viewportScope.$parent ? viewportScope : $scope; - - this.publicContext = {}; - this.assignAdapter($attr.adapter); - this.generatePublicContext(); - } - - assignAdapter(adapterAttr) { - if (!adapterAttr || !(adapterAttr = adapterAttr.replace(/^\s+|\s+$/gm, ''))) { - return; - } - let adapterOnScope; - - try { - this.$parse(adapterAttr).assign(this.startScope, {}); - adapterOnScope = this.$parse(adapterAttr)(this.startScope); - } - catch (error) { - error.message = `Angular ui-scroll Adapter assignment exception.\n` + - `Can't parse "${adapterAttr}" expression.\n` + - error.message; - throw error; - } - - angular.extend(adapterOnScope, this.publicContext); - this.publicContext = adapterOnScope; - } - - generatePublicContext() { - // these methods will be accessible out of ui-scroll via user defined adapter - const publicMethods = ['reload', 'applyUpdates', 'append', 'prepend', 'isBOF', 'isEOF', 'isEmpty']; - for (let i = publicMethods.length - 1; i >= 0; i--) { - this.publicContext[publicMethods[i]] = this[publicMethods[i]].bind(this); - } - - // these read-only props will be accessible out of ui-scroll via user defined adapter - const publicProps = ['isLoading', 'topVisible', 'topVisibleElement', 'topVisibleScope', 'bottomVisible', 'bottomVisibleElement', 'bottomVisibleScope']; - for (let i = publicProps.length - 1; i >= 0; i--) { - let property, attr = this.$attr[publicProps[i]]; - Object.defineProperty(this, publicProps[i], { - get: () => property, - set: (value) => { - property = value; - this.publicContext[publicProps[i]] = value; - if (attr) { - this.$parse(attr).assign(this.startScope, value); - } - } - }); - } - - // non-read-only public property - Object.defineProperty(this.publicContext, 'disabled', { - get: () => this.disabled, - set: (value) => (!(this.disabled = value)) ? this.doAdjust() : null - }); - } - - loading(value) { - this.isLoading = value; - } - - isBOF() { - return this.buffer.bof; - } - - isEOF() { - return this.buffer.eof; - } - - isEmpty() { - return !this.buffer.length; - } - - append(newItems) { - this.buffer.append(newItems); - this.doAdjust(); - this.viewport.clipTop(); - this.viewport.clipBottom(); - } - - prepend(newItems) { - this.buffer.prepend(newItems); - this.doAdjust(); - this.viewport.clipTop(); - this.viewport.clipBottom(); - } - - applyUpdates(arg1, arg2) { - if (typeof arg1 === 'function') { - this.applyUpdatesFunc(arg1); - } else { - this.applyUpdatesIndex(arg1, arg2); - } - this.doAdjust(); - } - - applyUpdatesFunc(cb) { - this.buffer.slice(0).forEach((wrapper) => { - // we need to do it on the buffer clone, because buffer content - // may change as we iterate through - this.applyUpdate(wrapper, cb(wrapper.item, wrapper.scope, wrapper.element)); - }); - } - - applyUpdatesIndex(index, newItems) { - if (index % 1 !== 0) { - throw new Error('applyUpdates - ' + index + ' is not a valid index (should be an integer)'); - } - const _index = index - this.buffer.first; - - // apply updates only within buffer - if (_index >= 0 && _index < this.buffer.length) { - this.applyUpdate(this.buffer[_index], newItems); - } - // out-of-buffer case: deletion may affect Paddings - else if(index >= this.buffer.getAbsMinIndex() && index <= this.buffer.getAbsMaxIndex()) { - if(angular.isArray(newItems) && !newItems.length) { - this.viewport.removeCacheItem(index, index === this.buffer.minIndex); - if(index === this.buffer.getAbsMinIndex()) { - this.buffer.incrementMinIndex(); - } - else { - this.buffer.decrementMaxIndex(); - } - } - } - } - - applyUpdate(wrapper, newItems) { - if (!angular.isArray(newItems)) { - return; - } - let position = this.buffer.indexOf(wrapper); - if (!newItems.reverse().some(newItem => newItem === wrapper.item)) { - wrapper.op = 'remove'; - if(position === 0 && !newItems.length) { - wrapper._op = 'isTop'; // to catch "first" edge case on remove - } - } - newItems.forEach((newItem) => { - if (newItem === wrapper.item) { - position--; - } else { - // 3 parameter (isTop) is to catch "first" edge case on insert - this.buffer.insert(position + 1, newItem, position === -1); - } - }); - } - - calculateProperties() { - let rowTop = null, topHeight = 0; - let topDone = false, bottomDone = false; - const length = this.buffer.length; - - for (let i = 0; i < length; i++) { - const item = this.buffer[i]; - const itemTop = item.element.offset().top; - - if (rowTop !== itemTop) { // a new row condition - const itemHeight = item.element.outerHeight(true); - const top = this.viewport.topDataPos() + topHeight + itemHeight; - - if (!topDone && top > this.viewport.topVisiblePos()) { - topDone = true; - this['topVisible'] = item.item; - this['topVisibleElement'] = item.element; - this['topVisibleScope'] = item.scope; - } - if (!bottomDone && (top >= this.viewport.bottomVisiblePos() || (i === length - 1 && this.isEOF()))) { - bottomDone = true; - this['bottomVisible'] = item.item; - this['bottomVisibleElement'] = item.element; - this['bottomVisibleScope'] = item.scope; - } - topHeight += itemHeight; - } - rowTop = itemTop; - - if (topDone && bottomDone) { - break; - } - } - } - -} - -export default Adapter; +class Adapter { + + constructor($scope, $parse, $attr, viewport, buffer, doAdjust, reload) { + this.$parse = $parse; + this.$attr = $attr; + this.viewport = viewport; + this.buffer = buffer; + + this.doAdjust = doAdjust; + this.reload = reload; + + this.isLoading = false; + this.disabled = false; + + const viewportScope = viewport.getScope(); + this.startScope = viewportScope.$parent ? viewportScope : $scope; + + this.publicContext = {}; + this.assignAdapter($attr.adapter); + this.generatePublicContext(); + } + + assignAdapter(adapterAttr) { + if (!adapterAttr || !(adapterAttr = adapterAttr.replace(/^\s+|\s+$/gm, ''))) { + return; + } + let adapterOnScope; + + try { + this.$parse(adapterAttr).assign(this.startScope, {}); + adapterOnScope = this.$parse(adapterAttr)(this.startScope); + } + catch (error) { + error.message = `Angular ui-scroll Adapter assignment exception.\n` + + `Can't parse "${adapterAttr}" expression.\n` + + error.message; + throw error; + } + + angular.extend(adapterOnScope, this.publicContext); + this.publicContext = adapterOnScope; + } + + generatePublicContext() { + // these methods will be accessible out of ui-scroll via user defined adapter + const publicMethods = ['reload', 'applyUpdates', 'append', 'prepend', 'isBOF', 'isEOF', 'isEmpty']; + for (let i = publicMethods.length - 1; i >= 0; i--) { + this.publicContext[publicMethods[i]] = this[publicMethods[i]].bind(this); + } + + // these read-only props will be accessible out of ui-scroll via user defined adapter + const publicProps = ['isLoading', 'topVisible', 'topVisibleElement', 'topVisibleScope', 'bottomVisible', 'bottomVisibleElement', 'bottomVisibleScope']; + for (let i = publicProps.length - 1; i >= 0; i--) { + let property, attr = this.$attr[publicProps[i]]; + Object.defineProperty(this, publicProps[i], { + get: () => property, + set: (value) => { + property = value; + this.publicContext[publicProps[i]] = value; + if (attr) { + this.$parse(attr).assign(this.startScope, value); + } + } + }); + } + + // read-only immediately calculated public properties + const publicPropsImmediate = ['bufferFirst', 'bufferLast', 'bufferLength']; + for (let i = publicPropsImmediate.length - 1; i >= 0; i--) { + Object.defineProperty(this.publicContext, publicPropsImmediate[i], { + get: () => this[publicPropsImmediate[i]] + }); + } + + // non-read-only public property + Object.defineProperty(this.publicContext, 'disabled', { + get: () => this.disabled, + set: (value) => (!(this.disabled = value)) ? this.doAdjust() : null + }); + } + + loading(value) { + this.isLoading = value; + } + + isBOF() { + return this.buffer.bof; + } + + isEOF() { + return this.buffer.eof; + } + + isEmpty() { + return !this.buffer.length; + } + + get bufferLength() { + return this.buffer.getItems().length; + } + + get bufferFirst() { + return this.buffer.getFirstItem(); + } + + get bufferLast() { + return this.buffer.getLastItem(); + } + + append(newItems) { + this.buffer.append(newItems); + this.doAdjust(); + this.viewport.clipTop(); + this.viewport.clipBottom(); + } + + prepend(newItems) { + this.buffer.prepend(newItems); + this.doAdjust(); + this.viewport.clipTop(); + this.viewport.clipBottom(); + } + + applyUpdates(arg1, arg2, arg3) { + if (typeof arg1 === 'function') { + this.applyUpdatesFunc(arg1, arg2); + } else { + this.applyUpdatesIndex(arg1, arg2, arg3); + } + this.doAdjust(); + } + + applyUpdatesFunc(cb, options) { + this.buffer.slice(0).forEach((wrapper) => { + // we need to do it on the buffer clone, because buffer content + // may change as we iterate through + this.applyUpdate(wrapper, cb(wrapper.item, wrapper.scope, wrapper.element), options); + }); + } + + applyUpdatesIndex(index, newItems, options = {}) { + if (index % 1 !== 0) { + throw new Error('applyUpdates - ' + index + ' is not a valid index (should be an integer)'); + } + const _index = index - this.buffer.first; + + // apply updates only within buffer + if (_index >= 0 && _index < this.buffer.length) { + this.applyUpdate(this.buffer[_index], newItems, options); + } + // out-of-buffer case: deletion may affect Paddings + else if(index >= this.buffer.getAbsMinIndex() && index <= this.buffer.getAbsMaxIndex()) { + if(angular.isArray(newItems) && !newItems.length) { + this.viewport.removeCacheItem(index, !options.immutableTop && index === this.buffer.minIndex); + if (!options.immutableTop && index === this.buffer.getAbsMinIndex()) { + this.buffer.incrementMinIndex(); + } + else { + this.buffer.decrementMaxIndex(); + } + } + } + } + + applyUpdate(wrapper, newItems, options = {}) { + if (!angular.isArray(newItems)) { + return; + } + let position = this.buffer.indexOf(wrapper); + if (!newItems.reverse().some(newItem => newItem === wrapper.item)) { + wrapper.op = 'remove'; + if (!options.immutableTop && position === 0 && !newItems.length) { + wrapper._op = 'isTop'; // to catch "first" edge case on remove + } + } + newItems.forEach((newItem) => { + if (newItem === wrapper.item) { + position--; + } else { + // 3 parameter (isTop) is to catch "first" edge case on insert + this.buffer.insert(position + 1, newItem, !options.immutableTop && position === -1); + } + }); + } + + calculateProperties() { + let rowTop = null, topHeight = 0; + let topDone = false, bottomDone = false; + const length = this.buffer.length; + + for (let i = 0; i < length; i++) { + const item = this.buffer[i]; + const itemTop = item.element.offset().top; + + if (rowTop !== itemTop) { // a new row condition + const itemHeight = item.element.outerHeight(true); + const top = this.viewport.topDataPos() + topHeight + itemHeight; + + if (!topDone && top > this.viewport.topVisiblePos()) { + topDone = true; + this['topVisible'] = item.item; + this['topVisibleElement'] = item.element; + this['topVisibleScope'] = item.scope; + } + if (!bottomDone && (top >= this.viewport.bottomVisiblePos() || (i === length - 1 && this.isEOF()))) { + bottomDone = true; + this['bottomVisible'] = item.item; + this['bottomVisibleElement'] = item.element; + this['bottomVisibleScope'] = item.scope; + } + topHeight += itemHeight; + } + rowTop = itemTop; + + if (topDone && bottomDone) { + break; + } + } + } + +} + +export default Adapter; diff --git a/src/modules/buffer.js b/src/modules/buffer.js index 866afe17..47484244 100644 --- a/src/modules/buffer.js +++ b/src/modules/buffer.js @@ -1,154 +1,185 @@ -export default function ScrollBuffer(elementRoutines, bufferSize, startIndex) { - const buffer = Object.create(Array.prototype); - - angular.extend(buffer, { - size: bufferSize, - - reset(startIndex) { - buffer.remove(0, buffer.length); - buffer.eof = false; - buffer.bof = false; - buffer.first = startIndex; - buffer.next = startIndex; - buffer.minIndex = startIndex; - buffer.maxIndex = startIndex; - buffer.minIndexUser = null; - buffer.maxIndexUser = null; - }, - - append(items) { - items.forEach((item) => { - ++buffer.next; - buffer.insert('append', item); - }); - buffer.maxIndex = buffer.eof ? buffer.next - 1 : Math.max(buffer.next - 1, buffer.maxIndex); - }, - - prepend(items) { - items.reverse().forEach((item) => { - --buffer.first; - buffer.insert('prepend', item); - }); - buffer.minIndex = buffer.bof ? buffer.minIndex = buffer.first : Math.min(buffer.first, buffer.minIndex); - }, - - /** - * inserts wrapped element in the buffer - * the first argument is either operation keyword (see below) or a number for operation 'insert' - * for insert the number is the index for the buffer element the new one have to be inserted after - * operations: 'append', 'prepend', 'insert', 'remove', 'update', 'none' - */ - insert(operation, item, isTop) { - const wrapper = { - item: item - }; - - if (operation % 1 === 0) {// it is an insert - wrapper.op = 'insert'; - buffer.splice(operation, 0, wrapper); - if(isTop) { - buffer.first--; - } - else { - buffer.next++; - } - } else { - wrapper.op = operation; - switch (operation) { - case 'append': - buffer.push(wrapper); - break; - case 'prepend': - buffer.unshift(wrapper); - break; - } - } - }, - - // removes elements from buffer - remove(arg1, arg2) { - if (angular.isNumber(arg1)) { - // removes items from arg1 (including) through arg2 (excluding) - for (let i = arg1; i < arg2; i++) { - elementRoutines.removeElement(buffer[i]); - } - return buffer.splice(arg1, arg2 - arg1); - } - // removes single item(wrapper) from the buffer - buffer.splice(buffer.indexOf(arg1), 1); - if(arg1._op === 'isTop' && buffer.first === this.getAbsMinIndex()) { - this.incrementMinIndex(); - } - else { - this.decrementMaxIndex(); - } - if(arg1._op === 'isTop') { - buffer.first++; - } - else { - buffer.next--; - } - if(!buffer.length) { - buffer.first = 1; - buffer.next = 1; - } - - return elementRoutines.removeElementAnimated(arg1); - }, - - incrementMinIndex() { - if(buffer.minIndexUser !== null) { - if(buffer.minIndex > buffer.minIndexUser) { - buffer.minIndexUser++; - return; - } - if(buffer.minIndex === buffer.minIndexUser) { - buffer.minIndexUser++; - } - } - buffer.minIndex++; - }, - - decrementMaxIndex() { - if(buffer.maxIndexUser !== null && buffer.maxIndex <= buffer.maxIndexUser) { - buffer.maxIndexUser--; - } - buffer.maxIndex--; - }, - - getAbsMinIndex() { - if(buffer.minIndexUser !== null) { - return Math.min(buffer.minIndexUser, buffer.minIndex); - } - return buffer.minIndex; - }, - - getAbsMaxIndex() { - if(buffer.maxIndexUser !== null) { - return Math.max(buffer.maxIndexUser, buffer.maxIndex); - } - return buffer.maxIndex; - }, - - effectiveHeight(elements) { - if (!elements.length) { - return 0; - } - let top = Number.MAX_VALUE; - let bottom = Number.NEGATIVE_INFINITY; - elements.forEach((wrapper) => { - if (wrapper.element[0].offsetParent) { - // element style is not display:none - top = Math.min(top, wrapper.element.offset().top); - bottom = Math.max(bottom, wrapper.element.offset().top + wrapper.element.outerHeight(true)); - } - }); - return Math.max(0, bottom - top); - } - - }); - - buffer.reset(startIndex); - - return buffer; -} +export default function ScrollBuffer(elementRoutines, bufferSize, startIndex, rowHeight) { + const buffer = Object.create(Array.prototype); + + angular.extend(buffer, { + size: bufferSize, + + reset(startIndex) { + buffer.remove(0, buffer.length); + buffer.eof = false; + buffer.bof = false; + buffer.first = startIndex; + buffer.next = startIndex; + buffer.minIndex = startIndex; // Calculated when data is effectively accessed + buffer.maxIndex = startIndex; + buffer.minIndexUser = null; // as set by the user (datasource) + buffer.maxIndexUser = null; + }, + + // PHIL: set the new index to be displayed without resettng the sroll and the calculated min/max + // Note that this actually make sense with a fixed rowHeight when the scroll value can be calculated + // for a # of rows + resetStartIndex: function resetStartIndex(startIndex) { + buffer.remove(0, buffer.length); + buffer.eof = buffer.eof && startIndex==buffer.maxIndex; + buffer.bof = buffer.bof && startIndex==buffer.maxIndex; + buffer.first = startIndex; + buffer.next = startIndex; + }, + + append(items) { + items.forEach((item) => { + ++buffer.next; + buffer.insert('append', item); + }); + buffer.maxIndex = buffer.eof ? buffer.next - 1 : Math.max(buffer.next - 1, buffer.maxIndex); + }, + + prepend(items) { + items.reverse().forEach((item) => { + --buffer.first; + buffer.insert('prepend', item); + }); + buffer.minIndex = buffer.bof ? buffer.minIndex = buffer.first : Math.min(buffer.first, buffer.minIndex); + }, + + /** + * inserts wrapped element in the buffer + * the first argument is either operation keyword (see below) or a number for operation 'insert' + * for insert the number is the index for the buffer element the new one have to be inserted after + * operations: 'append', 'prepend', 'insert', 'remove', 'update', 'none' + */ + insert(operation, item, isTop) { + const wrapper = { + item: item + }; + + if (operation % 1 === 0) {// it is an insert + wrapper.op = 'insert'; + buffer.splice(operation, 0, wrapper); + if(isTop) { + buffer.first--; + } + else { + buffer.next++; + } + } else { + wrapper.op = operation; + switch (operation) { + case 'append': + buffer.push(wrapper); + break; + case 'prepend': + buffer.unshift(wrapper); + break; + } + } + }, + + // removes elements from buffer + remove(arg1, arg2) { + if (angular.isNumber(arg1)) { + // removes items from arg1 (including) through arg2 (excluding) + for (let i = arg1; i < arg2; i++) { + elementRoutines.removeElement(buffer[i]); + } + return buffer.splice(arg1, arg2 - arg1); + } + // removes single item(wrapper) from the buffer + buffer.splice(buffer.indexOf(arg1), 1); + if(arg1._op === 'isTop' && buffer.first === this.getAbsMinIndex()) { + this.incrementMinIndex(); + } + else { + this.decrementMaxIndex(); + } + if(arg1._op === 'isTop') { + buffer.first++; + } + else { + buffer.next--; + } + if(!buffer.length) { + buffer.first = 1; + buffer.next = 1; + } + + return elementRoutines.removeElementAnimated(arg1); + }, + + incrementMinIndex() { + if(buffer.minIndexUser !== null) { + if(buffer.minIndex > buffer.minIndexUser) { + buffer.minIndexUser++; + return; + } + if(buffer.minIndex === buffer.minIndexUser) { + buffer.minIndexUser++; + } + } + buffer.minIndex++; + }, + + decrementMaxIndex() { + if(buffer.maxIndexUser !== null && buffer.maxIndex <= buffer.maxIndexUser) { + buffer.maxIndexUser--; + } + buffer.maxIndex--; + }, + + getAbsMinIndex() { + if(buffer.minIndexUser !== null) { + return Math.min(buffer.minIndexUser, buffer.minIndex); + } + return buffer.minIndex; + }, + + getAbsMaxIndex() { + if(buffer.maxIndexUser !== null) { + return Math.max(buffer.maxIndexUser, buffer.maxIndex); + } + return buffer.maxIndex; + }, + + effectiveHeight(elements) { + if (!elements.length) { + return 0; + } + let top = Number.MAX_VALUE; + let bottom = Number.NEGATIVE_INFINITY; + elements.forEach((wrapper) => { + if (wrapper.element[0].offsetParent) { + // element style is not display:none + top = Math.min(top, wrapper.element.offset().top); + bottom = Math.max(bottom, wrapper.element.offset().top + (rowHeight || wrapper.element.outerHeight(true))); + } + }); + return Math.max(0, bottom - top); + }, + + getItems() { + return buffer.filter(item => item.op === 'none'); + }, + + getFirstItem() { + const list = buffer.getItems(); + if (!list.length) { + return null; + } + return list[0].item; + }, + + getLastItem() { + const list = buffer.getItems(); + if (!list.length) { + return null; + } + return list[list.length - 1].item; + } + + }); + + buffer.reset(startIndex); + + return buffer; +} diff --git a/src/modules/elementRoutines.js b/src/modules/elementRoutines.js index b4c7dda5..a9c877f6 100644 --- a/src/modules/elementRoutines.js +++ b/src/modules/elementRoutines.js @@ -1,82 +1,82 @@ -const hideClassToken = 'ng-ui-scroll-hide'; - -export default class ElementRoutines { - - static addCSSRules() { - const selector = '.' + hideClassToken; - const rules = 'display: none'; - const sheet = document.styleSheets[0]; - let index; - try { - index = sheet.cssRules.length; - } catch (err) { - index = 0; - } - if('insertRule' in sheet) { - sheet.insertRule(selector + '{' + rules + '}', index); - } - else if('addRule' in sheet) { - sheet.addRule(selector, rules, index); - } - } - - constructor($injector, $q) { - this.$animate = ($injector.has && $injector.has('$animate')) ? $injector.get('$animate') : null; - this.isAngularVersionLessThen1_3 = angular.version.major === 1 && angular.version.minor < 3; - this.$q = $q; - } - - hideElement(wrapper) { - wrapper.element.addClass(hideClassToken); - } - - showElement(wrapper) { - wrapper.element.removeClass(hideClassToken); - } - - insertElement(newElement, previousElement) { - previousElement.after(newElement); - return []; - } - - removeElement(wrapper) { - wrapper.element.remove(); - wrapper.scope.$destroy(); - return []; - } - - insertElementAnimated(newElement, previousElement) { - if (!this.$animate) { - return this.insertElement(newElement, previousElement); - } - - if (this.isAngularVersionLessThen1_3) { - const deferred = this.$q.defer(); - // no need for parent - previous element is never null - this.$animate.enter(newElement, null, previousElement, () => deferred.resolve()); - - return [deferred.promise]; - } - - // no need for parent - previous element is never null - return [this.$animate.enter(newElement, null, previousElement)]; - } - - removeElementAnimated(wrapper) { - if (!this.$animate) { - return this.removeElement(wrapper); - } - - if (this.isAngularVersionLessThen1_3) { - const deferred = this.$q.defer(); - this.$animate.leave(wrapper.element, () => { - wrapper.scope.$destroy(); - return deferred.resolve(); - }); - - return [deferred.promise]; - } - - return [(this.$animate.leave(wrapper.element)).then(() => wrapper.scope.$destroy())]; - } +const hideClassToken = 'ng-ui-scroll-hide'; + +export default class ElementRoutines { + + static addCSSRules() { + const selector = '.' + hideClassToken; + const rules = 'display: none'; + const sheet = document.styleSheets[0]; + let index; + try { + index = sheet.cssRules.length; + } catch (err) { + index = 0; + } + if('insertRule' in sheet) { + sheet.insertRule(selector + '{' + rules + '}', index); + } + else if('addRule' in sheet) { + sheet.addRule(selector, rules, index); + } + } + + constructor($injector, $q) { + this.$animate = ($injector.has && $injector.has('$animate')) ? $injector.get('$animate') : null; + this.isAngularVersionLessThen1_3 = angular.version.major === 1 && angular.version.minor < 3; + this.$q = $q; + } + + hideElement(wrapper) { + wrapper.element.addClass(hideClassToken); + } + + showElement(wrapper) { + wrapper.element.removeClass(hideClassToken); + } + + insertElement(newElement, previousElement) { + previousElement.after(newElement); + return []; + } + + removeElement(wrapper) { + wrapper.element.remove(); + wrapper.scope.$destroy(); + return []; + } + + insertElementAnimated(newElement, previousElement) { + if (!this.$animate) { + return this.insertElement(newElement, previousElement); + } + + if (this.isAngularVersionLessThen1_3) { + const deferred = this.$q.defer(); + // no need for parent - previous element is never null + this.$animate.enter(newElement, null, previousElement, () => deferred.resolve()); + + return [deferred.promise]; + } + + // no need for parent - previous element is never null + return [this.$animate.enter(newElement, null, previousElement)]; + } + + removeElementAnimated(wrapper) { + if (!this.$animate) { + return this.removeElement(wrapper); + } + + if (this.isAngularVersionLessThen1_3) { + const deferred = this.$q.defer(); + this.$animate.leave(wrapper.element, () => { + wrapper.scope.$destroy(); + return deferred.resolve(); + }); + + return [deferred.promise]; + } + + return [(this.$animate.leave(wrapper.element)).then(() => wrapper.scope.$destroy())]; + } } \ No newline at end of file diff --git a/src/modules/jqLiteExtras.js b/src/modules/jqLiteExtras.js index e730f2ec..bba9b7f7 100644 --- a/src/modules/jqLiteExtras.js +++ b/src/modules/jqLiteExtras.js @@ -1,270 +1,270 @@ -/*! - globals: angular, window - List of used element methods available in JQuery but not in JQuery Lite - element.before(elem) - element.height() - element.outerHeight(true) - element.height(value) = only for Top/Bottom padding elements - element.scrollTop() - element.scrollTop(value) - */ - -export default class JQLiteExtras { - - registerFor(element) { - let convertToPx, css, getStyle, isWindow; - // angular implementation blows up if elem is the window - css = angular.element.prototype.css; - - element.prototype.css = function (name, value) { - let self = this; - let elem = self[0]; - if (!(!elem || elem.nodeType === 3 || elem.nodeType === 8 || !elem.style)) { - return css.call(self, name, value); - } - }; - - // as defined in angularjs v1.0.5 - isWindow = (obj) => obj && obj.document && obj.location && obj.alert && obj.setInterval; - - function scrollTo(self, direction, value) { - let elem = self[0]; - let [method, prop, preserve] = { - top: [ - 'scrollTop', - 'pageYOffset', - 'scrollLeft' - ], - left: [ - 'scrollLeft', - 'pageXOffset', - 'scrollTop' - ] - }[direction]; - - const isValueDefined = typeof value !== 'undefined'; - if (isWindow(elem)) { - if (isValueDefined) { - return elem.scrollTo(self[preserve].call(self), value); - } - return (prop in elem) ? elem[prop] : elem.document.documentElement[method]; - } else { - if (isValueDefined) { - elem[method] = value; - } - return elem[method]; - } - } - - if (window.getComputedStyle) { - getStyle = (elem) => window.getComputedStyle(elem, null); - convertToPx = (elem, value) => parseFloat(value); - } else { - getStyle = (elem) => elem.currentStyle; - convertToPx = (elem, value) => { - let left, result, rs, rsLeft, style; - let core_pnum = /[+-]?(?:\d*\.|)\d+(?:[eE][+-]?\d+|)/.source; - let rnumnonpx = new RegExp('^(' + core_pnum + ')(?!px)[a-z%]+$', 'i'); - - if (!rnumnonpx.test(value)) { - return parseFloat(value); - } - - // ported from JQuery - style = elem.style; - left = style.left; - rs = elem.runtimeStyle; - rsLeft = rs && rs.left; - if (rs) { - rs.left = style.left; - } - // put in the new values to get a computed style out - style.left = value; - result = style.pixelLeft; - style.left = left; - if (rsLeft) { - rs.left = rsLeft; - } - return result; - }; - } - - function getMeasurements(elem, measure) { - let base, borderA, borderB, computedMarginA, computedMarginB, computedStyle, dirA, dirB, marginA, marginB, paddingA, paddingB; - - if (isWindow(elem)) { - base = document.documentElement[{height: 'clientHeight', width: 'clientWidth'}[measure]]; - - return { - base: base, - padding: 0, - border: 0, - margin: 0 - }; - } - - // Start with offset property - [ - base, - dirA, - dirB - ] = { - width: [ - elem.offsetWidth, - 'Left', - 'Right' - ], - height: [ - elem.offsetHeight, - 'Top', - 'Bottom' - ] - }[measure]; - - computedStyle = getStyle(elem); - paddingA = convertToPx(elem, computedStyle['padding' + dirA]) || 0; - paddingB = convertToPx(elem, computedStyle['padding' + dirB]) || 0; - borderA = convertToPx(elem, computedStyle['border' + dirA + 'Width']) || 0; - borderB = convertToPx(elem, computedStyle['border' + dirB + 'Width']) || 0; - computedMarginA = computedStyle['margin' + dirA]; - computedMarginB = computedStyle['margin' + dirB]; - - // I do not care for width for now, so this hack is irrelevant - // if ( !supportsPercentMargin ) - // computedMarginA = hackPercentMargin( elem, computedStyle, computedMarginA ) - // computedMarginB = hackPercentMargin( elem, computedStyle, computedMarginB ) - marginA = convertToPx(elem, computedMarginA) || 0; - marginB = convertToPx(elem, computedMarginB) || 0; - - return { - base: base, - padding: paddingA + paddingB, - border: borderA + borderB, - margin: marginA + marginB - }; - } - - function getWidthHeight(elem, direction, measure) { - let computedStyle, result; - - let measurements = getMeasurements(elem, direction); - - if (measurements.base > 0) { - return { - base: measurements.base - measurements.padding - measurements.border, - outer: measurements.base, - outerfull: measurements.base + measurements.margin - }[measure]; - } - - // Fall back to computed then uncomputed css if necessary - computedStyle = getStyle(elem); - result = computedStyle[direction]; - - if (result < 0 || result === null) { - result = elem.style[direction] || 0; - } - - // Normalize "", auto, and prepare for extra - result = parseFloat(result) || 0; - - return { - base: result - measurements.padding - measurements.border, - outer: result, - outerfull: result + measurements.padding + measurements.border + measurements.margin - }[measure]; - } - - // define missing methods - return angular.forEach({ - before(newElem) { - var children, elem, i, j, parent, ref, self; - self = this; - elem = self[0]; - parent = self.parent(); - children = parent.contents(); - if (children[0] === elem) { - return parent.prepend(newElem); - } else { - for (i = j = 1, ref = children.length - 1; 1 <= ref ? j <= ref : j >= ref; i = 1 <= ref ? ++j : --j) { - if (children[i] === elem) { - angular.element(children[i - 1]).after(newElem); - return; - } - } - throw new Error('invalid DOM structure ' + elem.outerHTML); - } - }, - height (value){ - var self; - self = this; - if (typeof value !== 'undefined') { - if (angular.isNumber(value)) { - value = value + 'px'; - } - return css.call(self, 'height', value); - } else { - return getWidthHeight(this[0], 'height', 'base'); - } - }, - outerHeight(option) { - return getWidthHeight(this[0], 'height', option ? 'outerfull' : 'outer'); - }, - outerWidth(option) { - return getWidthHeight(this[0], 'width', option ? 'outerfull' : 'outer'); - }, - - /* - The offset setter method is not implemented - */ - offset(value) { - let docElem, win; - let self = this; - let box = { - top: 0, - left: 0 - }; - let elem = self[0]; - let doc = elem && elem.ownerDocument; - - if (arguments.length) { - if (value === undefined) { - return self; - } - // TODO: implement setter - throw new Error('offset setter method is not implemented'); - } - - if (!doc) { - return; - } - - docElem = doc.documentElement; - - // TODO: Make sure it's not a disconnected DOM node - - if (elem.getBoundingClientRect != null) { - box = elem.getBoundingClientRect(); - } - - win = doc.defaultView || doc.parentWindow; - - return { - top: box.top + (win.pageYOffset || docElem.scrollTop) - (docElem.clientTop || 0), - left: box.left + (win.pageXOffset || docElem.scrollLeft) - (docElem.clientLeft || 0) - }; - }, - scrollTop(value) { - return scrollTo(this, 'top', value); - }, - scrollLeft(value) { - return scrollTo(this, 'left', value); - } - }, (value, key) => { - if (!element.prototype[key]) { - return element.prototype[key] = value; - } - }); - } - -} +/*! + globals: angular, window + List of used element methods available in JQuery but not in JQuery Lite + element.before(elem) + element.height() + element.outerHeight(true) + element.height(value) = only for Top/Bottom padding elements + element.scrollTop() + element.scrollTop(value) + */ + +export default class JQLiteExtras { + + registerFor(element) { + let convertToPx, css, getStyle, isWindow; + // angular implementation blows up if elem is the window + css = angular.element.prototype.css; + + element.prototype.css = function (name, value) { + let self = this; + let elem = self[0]; + if (!(!elem || elem.nodeType === 3 || elem.nodeType === 8 || !elem.style)) { + return css.call(self, name, value); + } + }; + + // as defined in angularjs v1.0.5 + isWindow = (obj) => obj && obj.document && obj.location && obj.alert && obj.setInterval; + + function scrollTo(self, direction, value) { + let elem = self[0]; + let [method, prop, preserve] = { + top: [ + 'scrollTop', + 'pageYOffset', + 'scrollLeft' + ], + left: [ + 'scrollLeft', + 'pageXOffset', + 'scrollTop' + ] + }[direction]; + + const isValueDefined = typeof value !== 'undefined'; + if (isWindow(elem)) { + if (isValueDefined) { + return elem.scrollTo(self[preserve].call(self), value); + } + return (prop in elem) ? elem[prop] : elem.document.documentElement[method]; + } else { + if (isValueDefined) { + elem[method] = value; + } + return elem[method]; + } + } + + if (window.getComputedStyle) { + getStyle = (elem) => window.getComputedStyle(elem, null); + convertToPx = (elem, value) => parseFloat(value); + } else { + getStyle = (elem) => elem.currentStyle; + convertToPx = (elem, value) => { + let left, result, rs, rsLeft, style; + let core_pnum = /[+-]?(?:\d*\.|)\d+(?:[eE][+-]?\d+|)/.source; + let rnumnonpx = new RegExp('^(' + core_pnum + ')(?!px)[a-z%]+$', 'i'); + + if (!rnumnonpx.test(value)) { + return parseFloat(value); + } + + // ported from JQuery + style = elem.style; + left = style.left; + rs = elem.runtimeStyle; + rsLeft = rs && rs.left; + if (rs) { + rs.left = style.left; + } + // put in the new values to get a computed style out + style.left = value; + result = style.pixelLeft; + style.left = left; + if (rsLeft) { + rs.left = rsLeft; + } + return result; + }; + } + + function getMeasurements(elem, measure) { + let base, borderA, borderB, computedMarginA, computedMarginB, computedStyle, dirA, dirB, marginA, marginB, paddingA, paddingB; + + if (isWindow(elem)) { + base = document.documentElement[{height: 'clientHeight', width: 'clientWidth'}[measure]]; + + return { + base: base, + padding: 0, + border: 0, + margin: 0 + }; + } + + // Start with offset property + [ + base, + dirA, + dirB + ] = { + width: [ + elem.offsetWidth, + 'Left', + 'Right' + ], + height: [ + elem.offsetHeight, + 'Top', + 'Bottom' + ] + }[measure]; + + computedStyle = getStyle(elem); + paddingA = convertToPx(elem, computedStyle['padding' + dirA]) || 0; + paddingB = convertToPx(elem, computedStyle['padding' + dirB]) || 0; + borderA = convertToPx(elem, computedStyle['border' + dirA + 'Width']) || 0; + borderB = convertToPx(elem, computedStyle['border' + dirB + 'Width']) || 0; + computedMarginA = computedStyle['margin' + dirA]; + computedMarginB = computedStyle['margin' + dirB]; + + // I do not care for width for now, so this hack is irrelevant + // if ( !supportsPercentMargin ) + // computedMarginA = hackPercentMargin( elem, computedStyle, computedMarginA ) + // computedMarginB = hackPercentMargin( elem, computedStyle, computedMarginB ) + marginA = convertToPx(elem, computedMarginA) || 0; + marginB = convertToPx(elem, computedMarginB) || 0; + + return { + base: base, + padding: paddingA + paddingB, + border: borderA + borderB, + margin: marginA + marginB + }; + } + + function getWidthHeight(elem, direction, measure) { + let computedStyle, result; + + let measurements = getMeasurements(elem, direction); + + if (measurements.base > 0) { + return { + base: measurements.base - measurements.padding - measurements.border, + outer: measurements.base, + outerfull: measurements.base + measurements.margin + }[measure]; + } + + // Fall back to computed then uncomputed css if necessary + computedStyle = getStyle(elem); + result = computedStyle[direction]; + + if (result < 0 || result === null) { + result = elem.style[direction] || 0; + } + + // Normalize "", auto, and prepare for extra + result = parseFloat(result) || 0; + + return { + base: result - measurements.padding - measurements.border, + outer: result, + outerfull: result + measurements.padding + measurements.border + measurements.margin + }[measure]; + } + + // define missing methods + return angular.forEach({ + before(newElem) { + var children, elem, i, j, parent, ref, self; + self = this; + elem = self[0]; + parent = self.parent(); + children = parent.contents(); + if (children[0] === elem) { + return parent.prepend(newElem); + } else { + for (i = j = 1, ref = children.length - 1; 1 <= ref ? j <= ref : j >= ref; i = 1 <= ref ? ++j : --j) { + if (children[i] === elem) { + angular.element(children[i - 1]).after(newElem); + return; + } + } + throw new Error('invalid DOM structure ' + elem.outerHTML); + } + }, + height (value){ + var self; + self = this; + if (typeof value !== 'undefined') { + if (angular.isNumber(value)) { + value = value + 'px'; + } + return css.call(self, 'height', value); + } else { + return getWidthHeight(this[0], 'height', 'base'); + } + }, + outerHeight(option) { + return getWidthHeight(this[0], 'height', option ? 'outerfull' : 'outer'); + }, + outerWidth(option) { + return getWidthHeight(this[0], 'width', option ? 'outerfull' : 'outer'); + }, + + /* + The offset setter method is not implemented + */ + offset(value) { + let docElem, win; + let self = this; + let box = { + top: 0, + left: 0 + }; + let elem = self[0]; + let doc = elem && elem.ownerDocument; + + if (arguments.length) { + if (value === undefined) { + return self; + } + // TODO: implement setter + throw new Error('offset setter method is not implemented'); + } + + if (!doc) { + return; + } + + docElem = doc.documentElement; + + // TODO: Make sure it's not a disconnected DOM node + + if (elem.getBoundingClientRect != null) { + box = elem.getBoundingClientRect(); + } + + win = doc.defaultView || doc.parentWindow; + + return { + top: box.top + (win.pageYOffset || docElem.scrollTop) - (docElem.clientTop || 0), + left: box.left + (win.pageXOffset || docElem.scrollLeft) - (docElem.clientLeft || 0) + }; + }, + scrollTop(value) { + return scrollTo(this, 'top', value); + }, + scrollLeft(value) { + return scrollTo(this, 'left', value); + } + }, (value, key) => { + if (!element.prototype[key]) { + return element.prototype[key] = value; + } + }); + } + +} diff --git a/src/modules/padding.js b/src/modules/padding.js index ce66e22d..6b9766dd 100644 --- a/src/modules/padding.js +++ b/src/modules/padding.js @@ -1,84 +1,92 @@ -// Can't just extend the Array, due to Babel does not support built-in classes extending -// This solution was taken from https://stackoverflow.com/questions/46897414/es6-class-extends-array-workaround-for-es5-babel-transpile -class CacheProto { - add(item) { - for (let i = this.length - 1; i >= 0; i--) { - if (this[i].index === item.scope.$index) { - this[i].height = item.element.outerHeight(); - return; - } - } - this.push({ - index: item.scope.$index, - height: item.element.outerHeight() - }); - this.sort((a, b) => ((a.index < b.index) ? -1 : ((a.index > b.index) ? 1 : 0))); - } - - remove(argument, _isTop) { - const index = argument % 1 === 0 ? argument : argument.scope.$index; - const isTop = argument % 1 === 0 ? _isTop : argument._op === 'isTop'; - for (let i = this.length - 1; i >= 0; i--) { - if (this[i].index === index) { - this.splice(i, 1); - break; - } - } - if(!isTop) { - for (let i = this.length - 1; i >= 0; i--) { - if (this[i].index > index) { - this[i].index--; - } - } - } - } - - clear() { - this.length = 0; - } -} - -function Cache() { - const instance = []; - instance.push.apply(instance, arguments); - Object.setPrototypeOf(instance, Cache.prototype); - return instance; -} -Cache.prototype = Object.create(Array.prototype); -Object.getOwnPropertyNames(CacheProto.prototype).forEach(methodName => - Cache.prototype[methodName] = CacheProto.prototype[methodName] -); - -function generateElement(template) { - if(template.nodeType !== Node.ELEMENT_NODE) { - throw new Error('ui-scroll directive requires an Element node for templating the view'); - } - let element; - switch (template.tagName.toLowerCase()) { - case 'dl': - throw new Error(`ui-scroll directive does not support <${template.tagName}> as a repeating tag: ${template.outerHTML}`); - case 'tr': - let table = angular.element('
    '); - element = table.find('tr'); - break; - case 'li': - element = angular.element('
  • '); - break; - default: - element = angular.element('
    '); - } - return element; -} - -class Padding { - constructor(template) { - this.element = generateElement(template); - this.cache = new Cache(); - } - - height() { - return this.element.height.apply(this.element, arguments); - } -} - +// Can't just extend the Array, due to Babel does not support built-in classes extending +// This solution was taken from https://stackoverflow.com/questions/46897414/es6-class-extends-array-workaround-for-es5-babel-transpile +class CacheProto { + add(item) { + for (let i = this.length - 1; i >= 0; i--) { + if (this[i].index === item.scope.$index) { + this[i].height = item.element.outerHeight(); + return; + } + } + this.push({ + index: item.scope.$index, + height: item.element.outerHeight() + }); + this.sort((a, b) => ((a.index < b.index) ? -1 : ((a.index > b.index) ? 1 : 0))); + } + + remove(argument, _isTop) { + const index = argument % 1 === 0 ? argument : argument.scope.$index; + const isTop = argument % 1 === 0 ? _isTop : argument._op === 'isTop'; + for (let i = this.length - 1; i >= 0; i--) { + if (this[i].index === index) { + this.splice(i, 1); + break; + } + } + if(!isTop) { + for (let i = this.length - 1; i >= 0; i--) { + if (this[i].index > index) { + this[i].index--; + } + } + } + } + + clear() { + this.length = 0; + } +} + +function Cache() { + const instance = []; + instance.push.apply(instance, arguments); + Object.setPrototypeOf(instance, Cache.prototype); + return instance; +} +Cache.prototype = Object.create(Array.prototype); +Object.getOwnPropertyNames(CacheProto.prototype).forEach(methodName => + Cache.prototype[methodName] = CacheProto.prototype[methodName] +); + +function generateElement(template) { + if(template.nodeType !== Node.ELEMENT_NODE) { + throw new Error('ui-scroll directive requires an Element node for templating the view'); + } + let element; + switch (template.tagName.toLowerCase()) { + case 'dl': + throw new Error(`ui-scroll directive does not support <${template.tagName}> as a repeating tag: ${template.outerHTML}`); + case 'tr': + let table = angular.element('
    '); + element = table.find('tr'); + break; + case 'li': + element = angular.element('
  • '); + break; + default: + element = angular.element('
    '); + } + return element; +} + +// +// Padding represents the dummy element added to both the top and the bottom of the scrolling container +// It holds the element, as well as a cache for the items (rows) height. In case of a fixed rowHeight, the +// cache is not used and thus is not created. +// +class Padding { + constructor(template,useCache) { + this.element = generateElement(template); + if(useCache) { + this.cache = new Cache(); + } + } + + height() { + // When called with a parameter, this sets the height of the padding + return this.element.height.apply(this.element, arguments); + } +} + export default Padding; \ No newline at end of file diff --git a/src/modules/viewport.js b/src/modules/viewport.js index 4f64acb9..5fc5e0f5 100644 --- a/src/modules/viewport.js +++ b/src/modules/viewport.js @@ -1,216 +1,291 @@ -import Padding from './padding'; - -export default function Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding) { - let topPadding = null; - let bottomPadding = null; - const viewport = viewportController && viewportController.viewport ? viewportController.viewport : angular.element(window); - const container = viewportController && viewportController.container ? viewportController.container : undefined; - const scope = viewportController && viewportController.scope ? viewportController.scope : $rootScope; - - viewport.css({ - 'overflow-anchor': 'none', - 'overflow-y': 'auto', - 'display': 'block' - }); - - function bufferPadding() { - return viewport.outerHeight() * padding; // some extra space to initiate preload - } - - angular.extend(viewport, { - getScope() { - return scope; - }, - - createPaddingElements(template) { - topPadding = new Padding(template); - bottomPadding = new Padding(template); - element.before(topPadding.element); - element.after(bottomPadding.element); - topPadding.height(0); - bottomPadding.height(0); - }, - - applyContainerStyle() { - if (!container) { - return true; - } - if(container !== viewport) { - viewport.css('height', window.getComputedStyle(container[0]).height); - } - return viewport.height() > 0; - }, - - bottomDataPos() { - let scrollHeight = viewport[0].scrollHeight; - scrollHeight = scrollHeight != null ? scrollHeight : viewport[0].document.documentElement.scrollHeight; - return scrollHeight - bottomPadding.height(); - }, - - topDataPos() { - return topPadding.height(); - }, - - bottomVisiblePos() { - return viewport.scrollTop() + viewport.outerHeight(); - }, - - topVisiblePos() { - return viewport.scrollTop(); - }, - - insertElement(e, sibling) { - return elementRoutines.insertElement(e, sibling || topPadding.element); - }, - - insertElementAnimated(e, sibling) { - return elementRoutines.insertElementAnimated(e, sibling || topPadding.element); - }, - - shouldLoadBottom() { - return !buffer.eof && viewport.bottomDataPos() < viewport.bottomVisiblePos() + bufferPadding(); - }, - - clipBottom() { - // clip the invisible items off the bottom - let overage = 0; - let overageHeight = 0; - let itemHeight = 0; - let emptySpaceHeight = viewport.bottomDataPos() - viewport.bottomVisiblePos() - bufferPadding(); - - for (let i = buffer.length - 1; i >= 0; i--) { - itemHeight = buffer[i].element.outerHeight(true); - if (overageHeight + itemHeight > emptySpaceHeight) { - break; - } - bottomPadding.cache.add(buffer[i]); - overageHeight += itemHeight; - overage++; - } - - if (overage > 0) { - buffer.eof = false; - buffer.remove(buffer.length - overage, buffer.length); - buffer.next -= overage; - viewport.adjustPaddings(); - } - }, - - shouldLoadTop() { - return !buffer.bof && (viewport.topDataPos() > viewport.topVisiblePos() - bufferPadding()); - }, - - clipTop() { - // clip the invisible items off the top - let overage = 0; - let overageHeight = 0; - let itemHeight = 0; - let emptySpaceHeight = viewport.topVisiblePos() - viewport.topDataPos() - bufferPadding(); - - for (let i = 0; i < buffer.length; i++) { - itemHeight = buffer[i].element.outerHeight(true); - if (overageHeight + itemHeight > emptySpaceHeight) { - break; - } - topPadding.cache.add(buffer[i]); - overageHeight += itemHeight; - overage++; - } - - if (overage > 0) { - // we need to adjust top padding element before items are removed from top - // to avoid strange behaviour of scroll bar during remove top items when we are at the very bottom - topPadding.height(topPadding.height() + overageHeight); - buffer.bof = false; - buffer.remove(0, overage); - buffer.first += overage; - } - }, - - adjustPaddings() { - if (!buffer.length) { - return; - } - - // precise heights calculation based on items that are in buffer or that were in buffer once - const visibleItemsHeight = buffer.reduce((summ, item) => summ + item.element.outerHeight(true), 0); - - let topPaddingHeight = 0, topCount = 0; - topPadding.cache.forEach(item => { - if(item.index < buffer.first) { - topPaddingHeight += item.height; - topCount++; - } - }); - - let bottomPaddingHeight = 0, bottomCount = 0; - bottomPadding.cache.forEach(item => { - if(item.index >= buffer.next) { - bottomPaddingHeight += item.height; - bottomCount++; - } - }); - - const totalHeight = visibleItemsHeight + topPaddingHeight + bottomPaddingHeight; - const averageItemHeight = totalHeight / (topCount + bottomCount + buffer.length); - - // average heights calculation, items that have never been reached - let adjustTopPadding = buffer.minIndexUser !== null && buffer.minIndex > buffer.minIndexUser; - let adjustBottomPadding = buffer.maxIndexUser !== null && buffer.maxIndex < buffer.maxIndexUser; - let topPaddingHeightAdd = adjustTopPadding ? (buffer.minIndex - buffer.minIndexUser) * averageItemHeight : 0; - let bottomPaddingHeightAdd = adjustBottomPadding ? (buffer.maxIndexUser - buffer.maxIndex) * averageItemHeight : 0; - - // paddings combine adjustment - topPadding.height(topPaddingHeight + topPaddingHeightAdd); - bottomPadding.height(bottomPaddingHeight + bottomPaddingHeightAdd); - }, - - onAfterMinIndexSet(topPaddingHeightOld) { - // additional scrollTop adjustment in case of datasource.minIndex external set - if (buffer.minIndexUser !== null && buffer.minIndex > buffer.minIndexUser) { - let diff = topPadding.height() - topPaddingHeightOld; - viewport.scrollTop(viewport.scrollTop() + diff); - while((diff -= viewport.scrollTop()) > 0) { - bottomPadding.height(bottomPadding.height() + diff); - viewport.scrollTop(viewport.scrollTop() + diff); - } - } - }, - - onAfterPrepend(updates) { - if (!updates.prepended.length) - return; - const height = buffer.effectiveHeight(updates.prepended); - const paddingHeight = topPadding.height() - height; - if (paddingHeight >= 0) { - topPadding.height(paddingHeight); - } - else { - topPadding.height(0); - viewport.scrollTop(viewport.scrollTop() - paddingHeight); - } - }, - - resetTopPadding() { - topPadding.height(0); - topPadding.cache.clear(); - }, - - resetBottomPadding() { - bottomPadding.height(0); - bottomPadding.cache.clear(); - }, - - removeCacheItem(item, isTop) { - topPadding.cache.remove(item, isTop); - bottomPadding.cache.remove(item, isTop); - }, - - removeItem(item) { - this.removeCacheItem(item); - return buffer.remove(item); - } - }); - - return viewport; -} +import Padding from './padding'; + +export default function Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding, rowHeight) { + let topPadding = null; + let bottomPadding = null; + const viewport = viewportController && viewportController.viewport ? viewportController.viewport : angular.element(window); + const container = viewportController && viewportController.container ? viewportController.container : undefined; + const scope = viewportController && viewportController.scope ? viewportController.scope : $rootScope; + + viewport.css({ + 'overflow-anchor': 'none', + 'overflow-y': 'auto', + 'display': 'block' + }); + + function bufferPadding() { + return viewport.outerHeight() * padding; // some extra space to initiate preload + } + + // + // Viewport measurements + // + // +----------------+ 0 + // | top | + // | padding | + // +----------------+ topDataPos() [=topPadding.height] + // | not visible | + // | items | + // +----------------+ topVisiblePos() [=viewport.scrollTop] + // | | + // | visible | + // | items | + // | | + // +----------------+ bottomVisiblePos() [=viewport.scrollTop+viewport.height] + // | not visible | + // | items | + // +----------------+ bottomDataPos() [=scrollHeight-bottomPadding.height] + // | bottom | + // | padding | + // +----------------+ scrollHeight + // + // bufferPadding is some extra space we have top & bottom to allow infinite scrolling + // bufferPadding = viewport.outerHeight() * padding + // + // bottomVisiblePos() - topVisiblePos() == viewport.outerHeight() + + + angular.extend(viewport, { + getScope() { + return scope; + }, + + createPaddingElements(template) { + topPadding = new Padding(template,!rowHeight); + bottomPadding = new Padding(template,!rowHeight); + element.before(topPadding.element); + element.after(bottomPadding.element); + topPadding.height(0); + bottomPadding.height(0); + }, + + applyContainerStyle() { + if (!container) { + return true; + } + if(container !== viewport) { + viewport.css('height', window.getComputedStyle(container[0]).height); + } + return viewport.height() > 0; + }, + + bottomDataPos() { + let scrollHeight = viewport[0].scrollHeight; + scrollHeight = scrollHeight != null ? scrollHeight : viewport[0].document.documentElement.scrollHeight; + return scrollHeight - bottomPadding.height(); + }, + + topDataPos() { + return topPadding.height(); + }, + + bottomVisiblePos() { + return viewport.scrollTop() + viewport.outerHeight(); + }, + + topVisiblePos() { + return viewport.scrollTop(); + }, + + insertElement(e, sibling) { + return elementRoutines.insertElement(e, sibling || topPadding.element); + }, + + insertElementAnimated(e, sibling) { + return elementRoutines.insertElementAnimated(e, sibling || topPadding.element); + }, + + shouldLoadBottom() { + return !buffer.eof && viewport.bottomDataPos() < viewport.bottomVisiblePos() + bufferPadding(); + }, + + clipBottom() { + // clip the invisible items off the bottom + let overage = 0; + let emptySpaceHeight = viewport.bottomDataPos() - viewport.bottomVisiblePos() - bufferPadding(); + if(rowHeight) { + overage = Math.min(buffer.length,Math.floor(emptySpaceHeight/rowHeight)); + } else { + let itemHeight = 0; + let overageHeight = 0; + + for (let i = buffer.length - 1; i >= 0; i--) { + itemHeight = buffer[i].element.outerHeight(true); + if (overageHeight + itemHeight > emptySpaceHeight) { + break; + } + bottomPadding.cache.add(buffer[i]); + overageHeight += itemHeight; + overage++; + } + } + + if (overage > 0) { + buffer.eof = false; + buffer.remove(buffer.length - overage, buffer.length); + buffer.next -= overage; + viewport.adjustPaddings(); + } + }, + + shouldLoadTop() { + return !buffer.bof && (viewport.topDataPos() > viewport.topVisiblePos() - bufferPadding()); + }, + + clipTop() { + // clip the invisible items off the top + let overage = 0; + let overageHeight = 0; + let emptySpaceHeight = viewport.topVisiblePos() - viewport.topDataPos() - bufferPadding(); + if(rowHeight) { + overage = Math.min(buffer.length,Math.floor(emptySpaceHeight/rowHeight)); + overageHeight = overage * rowHeight; + } else { + let itemHeight = 0; + + for (let i = 0; i < buffer.length; i++) { + itemHeight = buffer[i].element.outerHeight(true); + if (overageHeight + itemHeight > emptySpaceHeight) { + break; + } + topPadding.cache.add(buffer[i]); + overageHeight += itemHeight; + overage++; + } + } + + if (overage > 0) { + // we need to adjust top padding element before items are removed from top + // to avoid strange behaviour of scroll bar during remove top items when we are at the very bottom + topPadding.height(topPadding.height() + overageHeight); + buffer.bof = false; + buffer.remove(0, overage); + buffer.first += overage; + } + }, + + // PHIL: remove all the entries in the buffer without changing the scrollbar, nor the scroll position + // and update the padding accordingly + // It is designed to work with non fixed rowHeight, although it will need more tests in this area... + scrollTo(first) { + if(rowHeight) { + first = Math.min(first, buffer.maxIndex); + first = Math.max(first, buffer.minIndex); + const min = buffer.getAbsMinIndex(); + const max = buffer.getAbsMaxIndex(); + // Adjust the paddings before removing the elements to avoid touching the scroll top position + topPadding.height((first-min)*rowHeight); + bottomPadding.height(((max+1)-first)*rowHeight); + buffer.resetStartIndex(first); + } else { + buffer.resetStartIndex(first); + viewport.adjustPaddings(); + } + }, + + adjustPaddings() { + if(rowHeight) { + const min = buffer.getAbsMinIndex(); + const max = buffer.getAbsMaxIndex(); + topPadding.height((buffer.first-min)*rowHeight); + // PHIL: next points to the next possible item, while max is the index of the last one. + // In order to make them compatible, we should add one to max + // Also, it looks like buffer is not changing maxIndex when an element is inserted/appended + // Not sure if this can have a consequence or not.... + bottomPadding.height(((max+1)-buffer.next)*rowHeight); + return; + } + + if (!buffer.length) { + return; + } + + // precise heights calculation based on items that are in buffer or that were in buffer once + const visibleItemsHeight = buffer.reduce((summ, item) => summ + item.element.outerHeight(true), 0); + let topPaddingHeight = 0, topCount = 0; + topPadding.cache.forEach(item => { + if(item.index < buffer.first) { + topPaddingHeight += item.height; + topCount++; + } + }); + + let bottomPaddingHeight = 0, bottomCount = 0; + bottomPadding.cache.forEach(item => { + if(item.index >= buffer.next) { + bottomPaddingHeight += item.height; + bottomCount++; + } + }); + + const totalHeight = visibleItemsHeight + topPaddingHeight + bottomPaddingHeight; + const averageItemHeight = totalHeight / (topCount + bottomCount + buffer.length); + + // average heights calculation, items that have never been reached + let adjustTopPadding = buffer.minIndexUser !== null && buffer.minIndex > buffer.minIndexUser; + let adjustBottomPadding = buffer.maxIndexUser !== null && buffer.maxIndex < buffer.maxIndexUser; + let topPaddingHeightAdd = adjustTopPadding ? (buffer.minIndex - buffer.minIndexUser) * averageItemHeight : 0; + let bottomPaddingHeightAdd = adjustBottomPadding ? (buffer.maxIndexUser - buffer.maxIndex) * averageItemHeight : 0; + + // paddings combine adjustment + topPadding.height(topPaddingHeight + topPaddingHeightAdd); + bottomPadding.height(bottomPaddingHeight + bottomPaddingHeightAdd); + }, + + onAfterMinIndexSet(topPaddingHeightOld) { + // additional scrollTop adjustment in case of datasource.minIndex external set + if (buffer.minIndexUser !== null && buffer.minIndex > buffer.minIndexUser) { + let diff = topPadding.height() - topPaddingHeightOld; + viewport.scrollTop(viewport.scrollTop() + diff); + while((diff -= viewport.scrollTop()) > 0) { + bottomPadding.height(bottomPadding.height() + diff); + viewport.scrollTop(viewport.scrollTop() + diff); + } + } + }, + + onAfterPrepend(updates) { + if (!updates.prepended.length) + return; + const height = buffer.effectiveHeight(updates.prepended); + const paddingHeight = topPadding.height() - height; + if (paddingHeight >= 0) { + topPadding.height(paddingHeight); + } + else { + topPadding.height(0); + viewport.scrollTop(viewport.scrollTop() - paddingHeight); + } + }, + + resetTopPadding() { + topPadding.height(0); + if(topPadding.cache) { + topPadding.cache.clear(); + } + }, + + resetBottomPadding() { + bottomPadding.height(0); + if(bottomPadding.cache) { + bottomPadding.cache.clear(); + } + }, + + removeCacheItem(item, isTop) { + if(topPadding.cache) { + topPadding.cache.remove(item, isTop); + } + if(bottomPadding.cache) { + bottomPadding.cache.remove(item, isTop); + } + }, + + removeItem(item) { + this.removeCacheItem(item); + return buffer.remove(item); + } + }); + + return viewport; +} diff --git a/src/ui-scroll-jqlite.js b/src/ui-scroll-jqlite.js index c542a1a4..7fae71e5 100644 --- a/src/ui-scroll-jqlite.js +++ b/src/ui-scroll-jqlite.js @@ -1,12 +1,12 @@ -/*! - * angular-ui-scroll - * https://github.com/angular-ui/ui-scroll.git - * This module is deprecated since 1.6.0 and will be removed in future versions! - * License: MIT - */ -(function () { - 'use strict'; - - angular.module('ui.scroll.jqlite', []); - +/*! + * angular-ui-scroll + * https://github.com/angular-ui/ui-scroll.git + * This module is deprecated since 1.6.0 and will be removed in future versions! + * License: MIT + */ +(function () { + 'use strict'; + + angular.module('ui.scroll.jqlite', []); + })(); \ No newline at end of file diff --git a/src/ui-scroll.js b/src/ui-scroll.js index 09617bbd..70028b21 100644 --- a/src/ui-scroll.js +++ b/src/ui-scroll.js @@ -73,33 +73,47 @@ angular.module('ui.scroll', []) return parseNumber(result, defaultValue, isFloat); } - const BUFFER_MIN = 3; - const BUFFER_DEFAULT = 10; - const PADDING_MIN = 0.3; - const PADDING_DEFAULT = 0.5; - const START_INDEX_DEFAULT = 1; - const MAX_VIEWPORT_DELAY = 500; - const VIEWPORT_POLLING_INTERVAL = 50; + const BUFFER_MIN = 3; // Minimum size of the data source request + const BUFFER_DEFAULT = 10; // Default datasource request size + const PADDING_MIN = 0.3; // Mininum # of rows in the padding area + const PADDING_DEFAULT = 0.5; // Default # of rows in the padding area + const START_INDEX_DEFAULT = 1; // Default start index when requestng the first data block + const MAX_VIEWPORT_DELAY = 500; // Max time wait (ms) to get the viewport with an height>0 + const VIEWPORT_POLLING_INTERVAL = 50; // Interval used to check the initial viewport height let datasource = null; - const itemName = match[1]; - const datasourceName = match[2]; - const viewportController = controllers[0]; - const bufferSize = Math.max(BUFFER_MIN, parseNumericAttr($attr.bufferSize, BUFFER_DEFAULT)); + const itemName = match[1]; // Name of the index variable to publish + const datasourceName = match[2]; // Name of the datasource to request the rows from + const viewportController = controllers[0]; // ViewportController, as specified in the require option (http://websystique.com/angularjs/angularjs-custom-directives-controllers-require-option-guide/) + const bufferSize = Math.max(BUFFER_MIN, parseNumericAttr($attr.bufferSize, BUFFER_DEFAULT)); const padding = Math.max(PADDING_MIN, parseNumericAttr($attr.padding, PADDING_DEFAULT, true)); let startIndex = parseNumericAttr($attr.startIndex, START_INDEX_DEFAULT); + + // PHIL: Provide a fixed row height + // + const rowHeight = parseNumericAttr($attr.rowHeight, null, false); + + // PHIL: Read the visibility watch option, true by default + const allowVisibilityWatch = $attr.allowVisibilityWatch!=='false'; + + // Revision IDs + // let ridActual = 0; // current data revision id let pending = []; const elementRoutines = new ElementRoutines($injector, $q); - const buffer = new ScrollBuffer(elementRoutines, bufferSize, startIndex); - const viewport = new Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding); + const buffer = new ScrollBuffer(elementRoutines, bufferSize, startIndex, rowHeight); + const viewport = new Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding, rowHeight); const adapter = new Adapter($scope, $parse, $attr, viewport, buffer, doAdjust, reload); if (viewportController) { viewportController.adapter = adapter; } + // Currently, we only debounce the scroll events when a fixed rowHeight is provided + // as the unit tests will have to be adapted to support this feature + let scPreviousScrollTop=-1; + const isDatasourceValid = () => Object.prototype.toString.call(datasource) === '[object Object]' && typeof datasource.get === 'function'; @@ -233,6 +247,11 @@ angular.module('ui.scroll', []) function bindEvents() { viewport.bind('resize', resizeAndScrollHandler); viewport.bind('scroll', resizeAndScrollHandler); + // If a scroll event happened while the handler was not bounded, emit the scroll + if(isPendingScroll()) { + // Do it immediately + _resizeAndScrollHandler(); + } } function unbindEvents() { @@ -248,13 +267,20 @@ angular.module('ui.scroll', []) startIndex = parseNumber(arguments[0], START_INDEX_DEFAULT, false); } buffer.reset(startIndex); + scPreviousScrollTop = -1; // Avoid isScrollPending() to be true persistDatasourceIndex(datasource, 'minIndex'); persistDatasourceIndex(datasource, 'maxIndex'); doAdjust(); } + function scrollTo(first) { + unbindEvents(); + viewport.scrollTo(first); + doAdjust(); + } + function isElementVisible(wrapper) { - return wrapper.element.height() && wrapper.element[0].offsetParent; + return (rowHeight || wrapper.element.height()) && wrapper.element[0].offsetParent; } function visibilityWatcher(wrapper) { @@ -273,10 +299,12 @@ angular.module('ui.scroll', []) function insertWrapperContent(wrapper, insertAfter) { createElement(wrapper, insertAfter, viewport.insertElement); - if (!isElementVisible(wrapper)) { + if (allowVisibilityWatch && !isElementVisible(wrapper)) { wrapper.unregisterVisibilityWatcher = wrapper.scope.$watch(() => visibilityWatcher(wrapper)); } - elementRoutines.hideElement(wrapper); // hide inserted elements before data binding + if (allowVisibilityWatch) { + elementRoutines.hideElement(wrapper); // hide inserted elements before data binding + } } function createElement(wrapper, insertAfter, insertElement) { @@ -348,6 +376,8 @@ angular.module('ui.scroll', []) } + // Adjust the viewport paddings + // function updatePaddings(rid, updates) { // schedule another doAdjust after animation completion if (updates.animated.length) { @@ -361,6 +391,14 @@ angular.module('ui.scroll', []) } function enqueueFetch(rid, updates) { + // If there is a scroll pending, we don't enqueue the fetch as the scroll might be an absolute scroll + // So we don't need to load top or bottom + // This happens when there is a scroll frenzi, and the $digest is slow enough, so it stacks the calls without + // giving a chance to the scroll event to be emitted and processed. + if(isPendingScroll()) { + return; + } + if (viewport.shouldLoadBottom()) { if (!updates || buffer.effectiveHeight(updates.inserted) > 0) { // this means that at least one item appended in the last batch has height > 0 @@ -386,10 +424,17 @@ angular.module('ui.scroll', []) const updates = updateDOM(); // We need the item bindings to be processed before we can do adjustments - !$scope.$$phase && !$rootScope.$$phase && $scope.$digest(); + // If there are no changes and the row-height is static, then ignore it! + const changes = updates.animated.length+updates.inserted.length+updates.prepended.length+updates.removed.length; + if(changes || !rowHeight) { + !$scope.$$phase && !$rootScope.$$phase && $scope.$digest(); + } + + if (allowVisibilityWatch) { + updates.inserted.forEach(w => elementRoutines.showElement(w)); + updates.prepended.forEach(w => elementRoutines.showElement(w)); + } - updates.inserted.forEach(w => elementRoutines.showElement(w)); - updates.prepended.forEach(w => elementRoutines.showElement(w)); return updates; } @@ -484,9 +529,48 @@ angular.module('ui.scroll', []) } } } + + function isPendingScroll() { + if(rowHeight) { + // Maybe the scroll changed but the event has *not* yet being dispatched + // because of the $digest running and taking to long + var sc = viewport.scrollTop(); + if(sc!=scPreviousScrollTop && scPreviousScrollTop>=0) { + return true; + } + } + return false; + } + // Deboucing the scroll events avois intermediate $digest when scrolling fast + let scTimer; function resizeAndScrollHandler() { + if (rowHeight) { + if (scTimer) clearTimeout(scTimer); + scTimer = setTimeout(_resizeAndScrollHandler, 20); + } else { + _resizeAndScrollHandler(); + } + } + + function _resizeAndScrollHandler() { if (!$rootScope.$$phase && !adapter.isLoading && !adapter.disabled) { + // Absolute positioning currently only works when a fixed rowHeight is provided + // We might isolate the averegaRowHeight calculation in the viewport to provide an estimate + // and provide a reasonable behavior with variable height as well + if(rowHeight) { + scPreviousScrollTop = viewport.scrollTop(); + let newFirst = Math.floor(viewport.scrollTop() / rowHeight) + buffer.minIndex; + newFirst = Math.max(buffer.minIndex, Math.min(buffer.maxIndex,newFirst)); // Bound the scroll + if (newFirst=buffer.next) { + scrollTo(newFirst); + return; + } + } enqueueFetch(ridActual); @@ -494,7 +578,10 @@ angular.module('ui.scroll', []) unbindEvents(); } else { adapter.calculateProperties(); - !$scope.$$phase && $scope.$digest(); + if(!rowHeight) { + // The digest is forced to calculate the height, which is not necessary when the height is knowm + !$scope.$$phase && $scope.$digest(); + } } } } diff --git a/test/PaddingsSpec.js b/test/PaddingsSpec.js index df80b4b1..362d881b 100644 --- a/test/PaddingsSpec.js +++ b/test/PaddingsSpec.js @@ -1,404 +1,404 @@ -describe('uiScroll Paddings spec.', () => { - 'use strict'; - - let datasource; - beforeEach(module('ui.scroll')); - beforeEach(module('ui.scroll.test.datasources')); - beforeEach( - inject(function(myResponsiveDatasource) { - datasource = myResponsiveDatasource; - }) - ); - - const itemsCount = 30; - const itemHeight = 100; - const viewportHeight = 500; - const MAX = 3; // maximum scrolling interations to reach out the EOF/BOF - - const scrollSettings = { - datasource: 'myResponsiveDatasource', - adapter: 'adapter', - itemHeight: itemHeight, - viewportHeight: viewportHeight - }; - - function appendTitle(outside, indices) { - return (outside ? ' outside' : ' inside') + ' the buffer' + (indices ? ' when min/max indices are set': ''); - } - - function setUserIndices() { - datasource.minIndex = datasource.min; - datasource.maxIndex = datasource.max; - } - - function scrollBottom(viewport, count = 1) { - for (var i = 0; i < count; i++) { - viewport.scrollTop(99999); - viewport.trigger('scroll'); - } - } - - function scrollTop(viewport, count = 1) { - for (var i = 0; i < count; i++) { - viewport.scrollTop(0); - viewport.trigger('scroll'); - } - } - - function removeItem(datasource, index) { - if(index >= datasource.min && index <= datasource.max) { - const indexRemoved = datasource.data.indexOf(datasource.data[index - datasource.min]); - if(indexRemoved > -1) { - datasource.data.splice(indexRemoved, 1); - if(index === datasource.min) { - datasource.min++; - } - else { - datasource.max--; - } - } - } - } - - function insertItems(datasource, index, items = []) { - if(index >= datasource.min && index <= datasource.max && items.length) { - const indexToInsert = datasource.data.indexOf(datasource.data[index - datasource.min]); - if(indexToInsert > -1) { - datasource.data.splice(indexToInsert, 0, items); - datasource.max += items.length; - } - } - } - - function checkRow(viewport, row, content, tail = false) { - var children = viewport.children(); - if(tail) { - row = children.length - 1 - row; - } - const rowElement = children[row]; - expect(rowElement.innerHTML).toBe(content); - } - - function checkRowBack(viewport, row, content) { - checkRow(viewport, row, content, true); - } - - it('\nshould set up properly', () => { - runTest(scrollSettings, - () => { - expect(datasource.min).toBe(1); - expect(datasource.max).toBe(itemsCount); - } - ); - }); - - describe('Removing items via indexed-based applyUpdates\n', () => { - - [true, false].forEach(outside => - [true, false].forEach(userIndices => - it('should remove last row' + appendTitle(outside, userIndices), () => - runTest(scrollSettings, - (viewport, scope) => { - userIndices && setUserIndices(); - - scrollBottom(viewport, MAX); - outside && scrollTop(viewport); - const initialBottomHeight = Helper.getBottomPadding(viewport); - - removeItem(datasource, datasource.max); - scope.adapter.applyUpdates(itemsCount, []); - outside && expect(Helper.getBottomPadding(viewport)).toBe(initialBottomHeight - itemHeight); - - !outside && scrollTop(viewport); - scrollBottom(viewport, MAX); - expect(viewport.scrollTop()).toBe(itemsCount * itemHeight - viewportHeight - itemHeight); - checkRowBack(viewport, 1, (itemsCount - 1) + ': item' + (itemsCount - 1)); - } - ) - ) - ) - ); - - [true, false].forEach(outside => - [true, false].forEach(userIndices => - it('should remove last row and then the next after last' + appendTitle(outside, userIndices), () => - runTest(scrollSettings, - (viewport, scope) => { - userIndices && setUserIndices(); - - scrollBottom(viewport, MAX); - outside && scrollTop(viewport); - - const initialBottomHeight = Helper.getBottomPadding(viewport); - removeItem(datasource, datasource.max); - scope.adapter.applyUpdates(itemsCount, []); - removeItem(datasource, datasource.max); - scope.adapter.applyUpdates(itemsCount - 1, []); - outside && expect(Helper.getBottomPadding(viewport)).toBe(initialBottomHeight - itemHeight * 2); - - !outside && scrollTop(viewport); - scrollBottom(viewport, MAX); - expect(viewport.scrollTop()).toBe(itemsCount * itemHeight - viewportHeight - itemHeight * 2); - checkRowBack(viewport, 1, (itemsCount - 2) + ': item' + (itemsCount - 2)); - } - ) - ) - ) - ); - - [true, false].forEach(outside => - [true, false].forEach(userIndices => - it('should remove pre-last row' + appendTitle(outside, userIndices), () => - runTest(scrollSettings, - (viewport, scope) => { - userIndices && setUserIndices(); - - scrollBottom(viewport, MAX); - outside && scrollTop(viewport); - - const initialBottomHeight = Helper.getBottomPadding(viewport); - removeItem(datasource, datasource.max - 1); - scope.adapter.applyUpdates(itemsCount - 1, []); - outside && expect(Helper.getBottomPadding(viewport)).toBe(initialBottomHeight - itemHeight); - - !outside && scrollTop(viewport); - scrollBottom(viewport, MAX); - expect(viewport.scrollTop()).toBe(itemsCount * itemHeight - viewportHeight - itemHeight); - checkRowBack(viewport, 1, (itemsCount - 1) + ': item' + itemsCount); - checkRowBack(viewport, 2, (itemsCount - 2) + ': item' + (itemsCount - 2)); - } - ) - ) - ) - ); - - [true, false].forEach(outside => - [true, false].forEach(userIndices => - it('should remove first row' + appendTitle(outside, userIndices), () => - runTest(scrollSettings, - (viewport, scope) => { - userIndices && setUserIndices(); - - outside && scrollBottom(viewport, MAX); - - const initialTopHeight = Helper.getTopPadding(viewport); - removeItem(datasource, datasource.min); - scope.adapter.applyUpdates(1, []); - outside && expect(Helper.getTopPadding(viewport)).toBe(initialTopHeight - itemHeight); - - !outside && scrollBottom(viewport, MAX); - expect(Helper.getBottomPadding(viewport)).toBe(0); - - scrollTop(viewport); - expect(Helper.getTopPadding(viewport)).toBe(0); - checkRow(viewport, 1, '2: item2'); - } - ) - ) - ) - ); - - [true, false].forEach(outside => - [true, false].forEach(userIndices => - it('should remove first row and then the next after first' + appendTitle(outside, userIndices), () => - runTest(scrollSettings, - (viewport, scope) => { - userIndices && setUserIndices(); - - outside && scrollBottom(viewport, MAX); - - const initialTopHeight = Helper.getTopPadding(viewport); - removeItem(datasource, datasource.min); - scope.adapter.applyUpdates(1, []); - removeItem(datasource, datasource.min); - scope.adapter.applyUpdates(2, []); - outside && expect(Helper.getTopPadding(viewport)).toBe(initialTopHeight - itemHeight * 2); - - !outside && scrollBottom(viewport, MAX); - expect(Helper.getBottomPadding(viewport)).toBe(0); - - scrollTop(viewport); - expect(Helper.getTopPadding(viewport)).toBe(0); - checkRow(viewport, 1, '3: item3'); - } - ) - ) - ) - ); - - [true, false].forEach(outside => - [true, false].forEach(userIndices => - it('should remove second row' + appendTitle(outside, userIndices), () => - runTest(scrollSettings, - (viewport, scope) => { - userIndices && setUserIndices(); - - outside && scrollBottom(viewport, MAX); - - const initialTopHeight = Helper.getTopPadding(viewport); - removeItem(datasource, datasource.min + 1); - scope.adapter.applyUpdates(2, []); - outside && expect(Helper.getTopPadding(viewport)).toBe(initialTopHeight - itemHeight * 1); - - !outside && scrollBottom(viewport, MAX); - expect(Helper.getBottomPadding(viewport)).toBe(0); - - scrollTop(viewport); - expect(Helper.getTopPadding(viewport)).toBe(0); - checkRow(viewport, 1, '1: item1'); - checkRow(viewport, 2, '2: item3'); - } - ) - ) - ) - ); - }); - - describe('Appending inside the buffer\n', () => { - - it('should append 3 rows via index-based applyUpdates', () => { - runTest(Object.assign({}, scrollSettings, { startIndex: 28 }), - (viewport, scope) => { - const newItems = [ - 'item' + (datasource.max + 1), - 'item' + (datasource.max + 2), - 'item' + (datasource.max + 3) - ]; - const oldMax = datasource.max; - const _scrollTop = viewport.scrollTop(); - - insertItems(datasource, datasource.max, newItems); - scope.adapter.applyUpdates(oldMax, ['item' + oldMax, ...newItems]); - - scrollBottom(viewport); - expect(viewport.scrollTop()).toBe(_scrollTop + newItems.length * itemHeight); - - checkRowBack(viewport, 1, (datasource.max - 0) + ': ' + newItems[2]); - checkRowBack(viewport, 2, (datasource.max - 1) + ': ' + newItems[1]); - checkRowBack(viewport, 3, (datasource.max - 2) + ': ' + newItems[0]); - checkRowBack(viewport, 4, oldMax + ': item' + oldMax); - } - ); - }); - - it('should append 3 rows via index-based applyUpdates when min/max indices are set', () => { - runTest(Object.assign({}, scrollSettings, { startIndex: 28 }), - (viewport, scope) => { - const newItems = [ - 'item' + (datasource.max + 1), - 'item' + (datasource.max + 2), - 'item' + (datasource.max + 3) - ]; - const oldMax = datasource.max; - - datasource.minIndex = datasource.min; - datasource.maxIndex = datasource.max; - const _scrollTop = viewport.scrollTop(); - - insertItems(datasource, datasource.max, newItems); - scope.adapter.applyUpdates(oldMax, ['item' + oldMax, ...newItems]); - - scrollBottom(viewport); - expect(viewport.scrollTop()).toBe(_scrollTop + newItems.length * itemHeight); - - checkRowBack(viewport, 1, (datasource.max - 0) + ': ' + newItems[2]); - checkRowBack(viewport, 2, (datasource.max - 1) + ': ' + newItems[1]); - checkRowBack(viewport, 3, (datasource.max - 2) + ': ' + newItems[0]); - checkRowBack(viewport, 4, oldMax + ': item' + oldMax); - } - ); - }); - }); - - - describe('Removing items via indexed-based applyUpdates when neither BOF nor EOF are reached\n', () => { - const _scrollSettings = Object.assign({}, scrollSettings, { startIndex: 12 }); - - [true, false].forEach(userIndices => - it('should remove first buffered row' + appendTitle(true, userIndices), () => - runTest(_scrollSettings, - (viewport, scope) => { - userIndices && setUserIndices(); - - removeItem(datasource, 2); - scope.adapter.applyUpdates(2, []); - - scrollBottom(viewport, MAX); - expect(Helper.getBottomPadding(viewport)).toBe(0); - checkRowBack(viewport, 1, (itemsCount - 1) + ': item' + itemsCount); - - scrollTop(viewport); - expect(Helper.getTopPadding(viewport)).toBe(0); - checkRow(viewport, 1, '1: item1'); - checkRow(viewport, 2, '2: item3'); - } - ) - ) - ); - - [true, false].forEach(userIndices => - it('should remove last buffered row' + appendTitle(true, userIndices), () => - runTest(_scrollSettings, - (viewport, scope) => { - userIndices && setUserIndices(); - - removeItem(datasource, 19); - scope.adapter.applyUpdates(19, []); - - scrollBottom(viewport); - expect(Helper.getBottomPadding(viewport)).toBe(0); - checkRowBack(viewport, 1, (itemsCount - 1) + ': item' + itemsCount); - - scrollTop(viewport); - expect(Helper.getTopPadding(viewport)).toBe(0); - } - ) - ) - ); - - [true, false].forEach(userIndices => - it('should remove absolute first row' + appendTitle(true, userIndices), () => - runTest(_scrollSettings, - (viewport, scope) => { - userIndices && setUserIndices(); - - removeItem(datasource, 1); - scope.adapter.applyUpdates(1, []); - - scrollBottom(viewport, MAX); - expect(Helper.getBottomPadding(viewport)).toBe(0); - checkRowBack(viewport, 1, itemsCount + ': item' + itemsCount); - - scrollTop(viewport); - expect(Helper.getTopPadding(viewport)).toBe(0); - checkRow(viewport, 1, '2: item2'); - checkRow(viewport, 2, '3: item3'); - } - ) - ) - ); - - [true, false].forEach(userIndices => - it('should remove absolute last row' + appendTitle(true, userIndices), () => - runTest(_scrollSettings, - (viewport, scope) => { - userIndices && setUserIndices(); - - removeItem(datasource, itemsCount); - scope.adapter.applyUpdates(itemsCount, []); - - scrollBottom(viewport, MAX); - expect(Helper.getBottomPadding(viewport)).toBe(0); - checkRowBack(viewport, 1, (itemsCount - 1) + ': item' + (itemsCount - 1)); - - scrollTop(viewport); - expect(Helper.getTopPadding(viewport)).toBe(0); - checkRow(viewport, 1, '1: item1'); - checkRow(viewport, 2, '2: item2'); - } - ) - ) - ); - }); - -}); +describe('uiScroll Paddings spec.', () => { + 'use strict'; + + let datasource; + beforeEach(module('ui.scroll')); + beforeEach(module('ui.scroll.test.datasources')); + beforeEach( + inject(function(myResponsiveDatasource) { + datasource = myResponsiveDatasource; + }) + ); + + const itemsCount = 30; + const itemHeight = 100; + const viewportHeight = 500; + const MAX = 3; // maximum scrolling interations to reach out the EOF/BOF + + const scrollSettings = { + datasource: 'myResponsiveDatasource', + adapter: 'adapter', + itemHeight: itemHeight, + viewportHeight: viewportHeight + }; + + function appendTitle(outside, indices) { + return (outside ? ' outside' : ' inside') + ' the buffer' + (indices ? ' when min/max indices are set': ''); + } + + function setUserIndices() { + datasource.minIndex = datasource.min; + datasource.maxIndex = datasource.max; + } + + function scrollBottom(viewport, count = 1) { + for (var i = 0; i < count; i++) { + viewport.scrollTop(99999); + viewport.trigger('scroll'); + } + } + + function scrollTop(viewport, count = 1) { + for (var i = 0; i < count; i++) { + viewport.scrollTop(0); + viewport.trigger('scroll'); + } + } + + function removeItem(datasource, index) { + if(index >= datasource.min && index <= datasource.max) { + const indexRemoved = datasource.data.indexOf(datasource.data[index - datasource.min]); + if(indexRemoved > -1) { + datasource.data.splice(indexRemoved, 1); + if(index === datasource.min) { + datasource.min++; + } + else { + datasource.max--; + } + } + } + } + + function insertItems(datasource, index, items = []) { + if(index >= datasource.min && index <= datasource.max && items.length) { + const indexToInsert = datasource.data.indexOf(datasource.data[index - datasource.min]); + if(indexToInsert > -1) { + datasource.data.splice(indexToInsert, 0, items); + datasource.max += items.length; + } + } + } + + function checkRow(viewport, row, content, tail = false) { + var children = viewport.children(); + if(tail) { + row = children.length - 1 - row; + } + const rowElement = children[row]; + expect(rowElement.innerHTML).toBe(content); + } + + function checkRowBack(viewport, row, content) { + checkRow(viewport, row, content, true); + } + + it('\nshould set up properly', () => { + runTest(scrollSettings, + () => { + expect(datasource.min).toBe(1); + expect(datasource.max).toBe(itemsCount); + } + ); + }); + + describe('Removing items via indexed-based applyUpdates\n', () => { + + [true, false].forEach(outside => + [true, false].forEach(userIndices => + it('should remove last row' + appendTitle(outside, userIndices), () => + runTest(scrollSettings, + (viewport, scope) => { + userIndices && setUserIndices(); + + scrollBottom(viewport, MAX); + outside && scrollTop(viewport); + const initialBottomHeight = Helper.getBottomPadding(viewport); + + removeItem(datasource, datasource.max); + scope.adapter.applyUpdates(itemsCount, []); + outside && expect(Helper.getBottomPadding(viewport)).toBe(initialBottomHeight - itemHeight); + + !outside && scrollTop(viewport); + scrollBottom(viewport, MAX); + expect(viewport.scrollTop()).toBe(itemsCount * itemHeight - viewportHeight - itemHeight); + checkRowBack(viewport, 1, (itemsCount - 1) + ': item' + (itemsCount - 1)); + } + ) + ) + ) + ); + + [true, false].forEach(outside => + [true, false].forEach(userIndices => + it('should remove last row and then the next after last' + appendTitle(outside, userIndices), () => + runTest(scrollSettings, + (viewport, scope) => { + userIndices && setUserIndices(); + + scrollBottom(viewport, MAX); + outside && scrollTop(viewport); + + const initialBottomHeight = Helper.getBottomPadding(viewport); + removeItem(datasource, datasource.max); + scope.adapter.applyUpdates(itemsCount, []); + removeItem(datasource, datasource.max); + scope.adapter.applyUpdates(itemsCount - 1, []); + outside && expect(Helper.getBottomPadding(viewport)).toBe(initialBottomHeight - itemHeight * 2); + + !outside && scrollTop(viewport); + scrollBottom(viewport, MAX); + expect(viewport.scrollTop()).toBe(itemsCount * itemHeight - viewportHeight - itemHeight * 2); + checkRowBack(viewport, 1, (itemsCount - 2) + ': item' + (itemsCount - 2)); + } + ) + ) + ) + ); + + [true, false].forEach(outside => + [true, false].forEach(userIndices => + it('should remove pre-last row' + appendTitle(outside, userIndices), () => + runTest(scrollSettings, + (viewport, scope) => { + userIndices && setUserIndices(); + + scrollBottom(viewport, MAX); + outside && scrollTop(viewport); + + const initialBottomHeight = Helper.getBottomPadding(viewport); + removeItem(datasource, datasource.max - 1); + scope.adapter.applyUpdates(itemsCount - 1, []); + outside && expect(Helper.getBottomPadding(viewport)).toBe(initialBottomHeight - itemHeight); + + !outside && scrollTop(viewport); + scrollBottom(viewport, MAX); + expect(viewport.scrollTop()).toBe(itemsCount * itemHeight - viewportHeight - itemHeight); + checkRowBack(viewport, 1, (itemsCount - 1) + ': item' + itemsCount); + checkRowBack(viewport, 2, (itemsCount - 2) + ': item' + (itemsCount - 2)); + } + ) + ) + ) + ); + + [true, false].forEach(outside => + [true, false].forEach(userIndices => + it('should remove first row' + appendTitle(outside, userIndices), () => + runTest(scrollSettings, + (viewport, scope) => { + userIndices && setUserIndices(); + + outside && scrollBottom(viewport, MAX); + + const initialTopHeight = Helper.getTopPadding(viewport); + removeItem(datasource, datasource.min); + scope.adapter.applyUpdates(1, []); + outside && expect(Helper.getTopPadding(viewport)).toBe(initialTopHeight - itemHeight); + + !outside && scrollBottom(viewport, MAX); + expect(Helper.getBottomPadding(viewport)).toBe(0); + + scrollTop(viewport); + expect(Helper.getTopPadding(viewport)).toBe(0); + checkRow(viewport, 1, '2: item2'); + } + ) + ) + ) + ); + + [true, false].forEach(outside => + [true, false].forEach(userIndices => + it('should remove first row and then the next after first' + appendTitle(outside, userIndices), () => + runTest(scrollSettings, + (viewport, scope) => { + userIndices && setUserIndices(); + + outside && scrollBottom(viewport, MAX); + + const initialTopHeight = Helper.getTopPadding(viewport); + removeItem(datasource, datasource.min); + scope.adapter.applyUpdates(1, []); + removeItem(datasource, datasource.min); + scope.adapter.applyUpdates(2, []); + outside && expect(Helper.getTopPadding(viewport)).toBe(initialTopHeight - itemHeight * 2); + + !outside && scrollBottom(viewport, MAX); + expect(Helper.getBottomPadding(viewport)).toBe(0); + + scrollTop(viewport); + expect(Helper.getTopPadding(viewport)).toBe(0); + checkRow(viewport, 1, '3: item3'); + } + ) + ) + ) + ); + + [true, false].forEach(outside => + [true, false].forEach(userIndices => + it('should remove second row' + appendTitle(outside, userIndices), () => + runTest(scrollSettings, + (viewport, scope) => { + userIndices && setUserIndices(); + + outside && scrollBottom(viewport, MAX); + + const initialTopHeight = Helper.getTopPadding(viewport); + removeItem(datasource, datasource.min + 1); + scope.adapter.applyUpdates(2, []); + outside && expect(Helper.getTopPadding(viewport)).toBe(initialTopHeight - itemHeight * 1); + + !outside && scrollBottom(viewport, MAX); + expect(Helper.getBottomPadding(viewport)).toBe(0); + + scrollTop(viewport); + expect(Helper.getTopPadding(viewport)).toBe(0); + checkRow(viewport, 1, '1: item1'); + checkRow(viewport, 2, '2: item3'); + } + ) + ) + ) + ); + }); + + describe('Appending inside the buffer\n', () => { + + it('should append 3 rows via index-based applyUpdates', () => { + runTest(Object.assign({}, scrollSettings, { startIndex: 28 }), + (viewport, scope) => { + const newItems = [ + 'item' + (datasource.max + 1), + 'item' + (datasource.max + 2), + 'item' + (datasource.max + 3) + ]; + const oldMax = datasource.max; + const _scrollTop = viewport.scrollTop(); + + insertItems(datasource, datasource.max, newItems); + scope.adapter.applyUpdates(oldMax, ['item' + oldMax, ...newItems]); + + scrollBottom(viewport); + expect(viewport.scrollTop()).toBe(_scrollTop + newItems.length * itemHeight); + + checkRowBack(viewport, 1, (datasource.max - 0) + ': ' + newItems[2]); + checkRowBack(viewport, 2, (datasource.max - 1) + ': ' + newItems[1]); + checkRowBack(viewport, 3, (datasource.max - 2) + ': ' + newItems[0]); + checkRowBack(viewport, 4, oldMax + ': item' + oldMax); + } + ); + }); + + it('should append 3 rows via index-based applyUpdates when min/max indices are set', () => { + runTest(Object.assign({}, scrollSettings, { startIndex: 28 }), + (viewport, scope) => { + const newItems = [ + 'item' + (datasource.max + 1), + 'item' + (datasource.max + 2), + 'item' + (datasource.max + 3) + ]; + const oldMax = datasource.max; + + datasource.minIndex = datasource.min; + datasource.maxIndex = datasource.max; + const _scrollTop = viewport.scrollTop(); + + insertItems(datasource, datasource.max, newItems); + scope.adapter.applyUpdates(oldMax, ['item' + oldMax, ...newItems]); + + scrollBottom(viewport); + expect(viewport.scrollTop()).toBe(_scrollTop + newItems.length * itemHeight); + + checkRowBack(viewport, 1, (datasource.max - 0) + ': ' + newItems[2]); + checkRowBack(viewport, 2, (datasource.max - 1) + ': ' + newItems[1]); + checkRowBack(viewport, 3, (datasource.max - 2) + ': ' + newItems[0]); + checkRowBack(viewport, 4, oldMax + ': item' + oldMax); + } + ); + }); + }); + + + describe('Removing items via indexed-based applyUpdates when neither BOF nor EOF are reached\n', () => { + const _scrollSettings = Object.assign({}, scrollSettings, { startIndex: 12 }); + + [true, false].forEach(userIndices => + it('should remove first buffered row' + appendTitle(true, userIndices), () => + runTest(_scrollSettings, + (viewport, scope) => { + userIndices && setUserIndices(); + + removeItem(datasource, 2); + scope.adapter.applyUpdates(2, []); + + scrollBottom(viewport, MAX); + expect(Helper.getBottomPadding(viewport)).toBe(0); + checkRowBack(viewport, 1, (itemsCount - 1) + ': item' + itemsCount); + + scrollTop(viewport); + expect(Helper.getTopPadding(viewport)).toBe(0); + checkRow(viewport, 1, '1: item1'); + checkRow(viewport, 2, '2: item3'); + } + ) + ) + ); + + [true, false].forEach(userIndices => + it('should remove last buffered row' + appendTitle(true, userIndices), () => + runTest(_scrollSettings, + (viewport, scope) => { + userIndices && setUserIndices(); + + removeItem(datasource, 19); + scope.adapter.applyUpdates(19, []); + + scrollBottom(viewport); + expect(Helper.getBottomPadding(viewport)).toBe(0); + checkRowBack(viewport, 1, (itemsCount - 1) + ': item' + itemsCount); + + scrollTop(viewport); + expect(Helper.getTopPadding(viewport)).toBe(0); + } + ) + ) + ); + + [true, false].forEach(userIndices => + it('should remove absolute first row' + appendTitle(true, userIndices), () => + runTest(_scrollSettings, + (viewport, scope) => { + userIndices && setUserIndices(); + + removeItem(datasource, 1); + scope.adapter.applyUpdates(1, []); + + scrollBottom(viewport, MAX); + expect(Helper.getBottomPadding(viewport)).toBe(0); + checkRowBack(viewport, 1, itemsCount + ': item' + itemsCount); + + scrollTop(viewport); + expect(Helper.getTopPadding(viewport)).toBe(0); + checkRow(viewport, 1, '2: item2'); + checkRow(viewport, 2, '3: item3'); + } + ) + ) + ); + + [true, false].forEach(userIndices => + it('should remove absolute last row' + appendTitle(true, userIndices), () => + runTest(_scrollSettings, + (viewport, scope) => { + userIndices && setUserIndices(); + + removeItem(datasource, itemsCount); + scope.adapter.applyUpdates(itemsCount, []); + + scrollBottom(viewport, MAX); + expect(Helper.getBottomPadding(viewport)).toBe(0); + checkRowBack(viewport, 1, (itemsCount - 1) + ': item' + (itemsCount - 1)); + + scrollTop(viewport); + expect(Helper.getTopPadding(viewport)).toBe(0); + checkRow(viewport, 1, '1: item1'); + checkRow(viewport, 2, '2: item2'); + } + ) + ) + ); + }); + +}); diff --git a/test/config/karma.conf.files.js b/test/config/karma.conf.files.js index 3570fb61..905af763 100644 --- a/test/config/karma.conf.files.js +++ b/test/config/karma.conf.files.js @@ -1,31 +1,31 @@ -const files = [ - 'https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js', - 'https://ajax.googleapis.com/ajax/libs/angularjs/1.6.5/angular.js', - 'https://ajax.googleapis.com/ajax/libs/angularjs/1.6.5/angular-mocks.js', - '../misc/test.css', - '../misc/datasources.js', - '../misc/scaffolding*.js', - '../misc/helpers.js', - { - pattern: '../*Spec.js', - watched: false, - served: true, - included: true - } -]; - -module.exports.development = [ - ...files, - '../../src/ui-scroll.js', - '../../src/ui-scroll-grid.js' -]; - -module.exports.production = [ - ...files, - '../../dist/ui-scroll.min.js', - '../../dist/ui-scroll-grid.min.js', - { - pattern: '../../dist/*.js.map', - included: false - } -]; +const files = [ + 'https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js', + 'https://ajax.googleapis.com/ajax/libs/angularjs/1.6.5/angular.js', + 'https://ajax.googleapis.com/ajax/libs/angularjs/1.6.5/angular-mocks.js', + '../misc/test.css', + '../misc/datasources.js', + '../misc/scaffolding*.js', + '../misc/helpers.js', + { + pattern: '../*Spec.js', + watched: false, + served: true, + included: true + } +]; + +module.exports.development = [ + ...files, + '../../src/ui-scroll.js', + '../../src/ui-scroll-grid.js' +]; + +module.exports.production = [ + ...files, + '../../dist/ui-scroll.min.js', + '../../dist/ui-scroll-grid.min.js', + { + pattern: '../../dist/*.js.map', + included: false + } +]; diff --git a/test/misc/scaffoldingGrid.js b/test/misc/scaffoldingGrid.js index 5f9a3408..04475533 100644 --- a/test/misc/scaffoldingGrid.js +++ b/test/misc/scaffoldingGrid.js @@ -1,68 +1,68 @@ -/* exported runGridTest */ - -function createGridHtml (settings) { - 'use strict'; - var viewportStyle = ' style="height:' + (settings.viewportHeight || 200) + 'px"'; - var columns = ['col0', 'col1', 'col2', 'col3']; - - var html = - '' + - '' + - ''; - columns.forEach(col => { html += - ''; - }); html += - '' + - '' + - '' + - ''; - if(settings.rowTemplate) { - html += settings.rowTemplate; - } else { - columns.forEach(col => { html += - ''; - }); - } html += - '' + - '' + - '
    ' + col + '
    {{item.' + col + '}}
    '; - return html; -} - -function finalize(scroller, options, scope, $timeout) { - 'use strict'; - options = options || {}; - scroller.remove(); - - if (typeof options.cleanupTest === 'function') { - options.cleanupTest(scroller, scope, $timeout); - } -} - -function runGridTest(scrollSettings, run, options) { - 'use strict'; - options = options || {}; - inject(function($rootScope, $compile, $window, $timeout) { - var scroller = angular.element(createGridHtml(scrollSettings)); - var scope = $rootScope.$new(); - - angular.element(document).find('body').append(scroller); - var head = angular.element(scroller.children()[0]); - var body = angular.element(scroller.children()[1]); - - if (options.scope) { - angular.extend(scope, options.scope); - } - - $compile(scroller)(scope); - - scope.$apply(); - $timeout.flush(); - - try { - run(head, body, scope, $timeout); - } finally { - finalize(scroller, options, scope, $timeout); - } - }); +/* exported runGridTest */ + +function createGridHtml (settings) { + 'use strict'; + var viewportStyle = ' style="height:' + (settings.viewportHeight || 200) + 'px"'; + var columns = ['col0', 'col1', 'col2', 'col3']; + + var html = + '' + + '' + + ''; + columns.forEach(col => { html += + ''; + }); html += + '' + + '' + + '' + + ''; + if(settings.rowTemplate) { + html += settings.rowTemplate; + } else { + columns.forEach(col => { html += + ''; + }); + } html += + '' + + '' + + '
    ' + col + '
    {{item.' + col + '}}
    '; + return html; +} + +function finalize(scroller, options, scope, $timeout) { + 'use strict'; + options = options || {}; + scroller.remove(); + + if (typeof options.cleanupTest === 'function') { + options.cleanupTest(scroller, scope, $timeout); + } +} + +function runGridTest(scrollSettings, run, options) { + 'use strict'; + options = options || {}; + inject(function($rootScope, $compile, $window, $timeout) { + var scroller = angular.element(createGridHtml(scrollSettings)); + var scope = $rootScope.$new(); + + angular.element(document).find('body').append(scroller); + var head = angular.element(scroller.children()[0]); + var body = angular.element(scroller.children()[1]); + + if (options.scope) { + angular.extend(scope, options.scope); + } + + $compile(scroller)(scope); + + scope.$apply(); + $timeout.flush(); + + try { + run(head, body, scope, $timeout); + } finally { + finalize(scroller, options, scope, $timeout); + } + }); } \ No newline at end of file diff --git a/test/misc/test.css b/test/misc/test.css index d7af5c04..70657749 100644 --- a/test/misc/test.css +++ b/test/misc/test.css @@ -1,6 +1,6 @@ -.grid { width: 250px; } -.col0 { width: 40px; } -.col1 { width: 80px; } -.col2 { width: 40px; } -.col3 { width: 50px; } +.grid { width: 250px; } +.col0 { width: 40px; } +.col1 { width: 80px; } +.col2 { width: 40px; } +.col3 { width: 50px; } .item:nth-child(odd) { background-color: #e6e6e6; } \ No newline at end of file From 07e7047f60f33ca1b4d11b19801f29054f710576 Mon Sep 17 00:00:00 2001 From: Philippe Riand Date: Fri, 16 Aug 2019 17:10:49 -0400 Subject: [PATCH 17/18] compiled files --- dist/ui-scroll-grid.js | 2 +- dist/ui-scroll.js | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/dist/ui-scroll-grid.js b/dist/ui-scroll-grid.js index 6ccf3f2e..1e0b76a0 100644 --- a/dist/ui-scroll-grid.js +++ b/dist/ui-scroll-grid.js @@ -1,7 +1,7 @@ /*! * angular-ui-scroll * https://github.com/angular-ui/ui-scroll - * Version: 1.7.4 -- 2019-08-16T21:00:27.398Z + * Version: 1.7.4 -- 2019-08-16T21:09:14.732Z * License: MIT */ /******/ (function(modules) { // webpackBootstrap diff --git a/dist/ui-scroll.js b/dist/ui-scroll.js index c005a5d4..c8e6a893 100644 --- a/dist/ui-scroll.js +++ b/dist/ui-scroll.js @@ -1,7 +1,7 @@ /*! * angular-ui-scroll * https://github.com/angular-ui/ui-scroll - * Version: 1.7.4 -- 2019-08-16T21:00:27.398Z + * Version: 1.7.4 -- 2019-08-16T21:09:14.732Z * License: MIT */ /******/ (function(modules) { // webpackBootstrap From 9c26d388f965140a4ef51bdd3ccc7b2f760e1d6f Mon Sep 17 00:00:00 2001 From: Philippe Riand Date: Mon, 26 Aug 2019 11:36:04 -0400 Subject: [PATCH 18/18] Latest code dealing with row height. --- dist/ui-scroll-grid.js | 2 +- dist/ui-scroll.js | 52 +++++++++++++++++++++++++-------------- dist/ui-scroll.js.map | 2 +- dist/ui-scroll.min.js | 2 +- dist/ui-scroll.min.js.map | 2 +- src/modules/adapter.js | 2 ++ src/modules/buffer.js | 7 +++--- src/modules/viewport.js | 3 +-- src/ui-scroll.js | 36 ++++++++++++++++++--------- 9 files changed, 69 insertions(+), 39 deletions(-) diff --git a/dist/ui-scroll-grid.js b/dist/ui-scroll-grid.js index 1e0b76a0..0199247b 100644 --- a/dist/ui-scroll-grid.js +++ b/dist/ui-scroll-grid.js @@ -1,7 +1,7 @@ /*! * angular-ui-scroll * https://github.com/angular-ui/ui-scroll - * Version: 1.7.4 -- 2019-08-16T21:09:14.732Z + * Version: 1.7.4 -- 2019-08-26T15:34:13.140Z * License: MIT */ /******/ (function(modules) { // webpackBootstrap diff --git a/dist/ui-scroll.js b/dist/ui-scroll.js index c8e6a893..8133dc1b 100644 --- a/dist/ui-scroll.js +++ b/dist/ui-scroll.js @@ -1,7 +1,7 @@ /*! * angular-ui-scroll * https://github.com/angular-ui/ui-scroll - * Version: 1.7.4 -- 2019-08-16T21:09:14.732Z + * Version: 1.7.4 -- 2019-08-26T15:34:13.140Z * License: MIT */ /******/ (function(modules) { // webpackBootstrap @@ -532,7 +532,7 @@ function ScrollBuffer(elementRoutines, bufferSize, startIndex, rowHeight) { resetStartIndex: function resetStartIndex(startIndex) { buffer.remove(0, buffer.length); buffer.eof = buffer.eof && startIndex == buffer.maxIndex; - buffer.bof = buffer.bof && startIndex == buffer.maxIndex; + buffer.bof = buffer.bof && startIndex == buffer.minIndex; buffer.first = startIndex; buffer.next = startIndex; }, @@ -613,8 +613,9 @@ function ScrollBuffer(elementRoutines, bufferSize, startIndex, rowHeight) { } if (!buffer.length) { - buffer.first = 1; - buffer.next = 1; + buffer.first = buffer.minIndex % 1 ? buffer.minIndex : startIndex; + buffer.next = buffer.first; + buffer.eof = buffer.eof && buffer.first == buffer.maxIndex; } return elementRoutines.removeElementAnimated(arg1); @@ -994,10 +995,9 @@ function Viewport(elementRoutines, buffer, element, viewportController, $rootSco // It is designed to work with non fixed rowHeight, although it will need more tests in this area... scrollTo: function scrollTo(first) { if (rowHeight) { - first = Math.min(first, buffer.maxIndex); - first = Math.max(first, buffer.minIndex); var min = buffer.getAbsMinIndex(); - var max = buffer.getAbsMaxIndex(); // Adjust the paddings before removing the elements to avoid touching the scroll top position + var max = buffer.getAbsMaxIndex(); + first = Math.min(Math.max(first, min), max); // Adjust the paddings before removing the elements to avoid touching the scroll top position topPadding.height((first - min) * rowHeight); bottomPadding.height((max + 1 - first) * rowHeight); @@ -1260,8 +1260,10 @@ function () { value: function applyUpdates(arg1, arg2, arg3) { if (typeof arg1 === 'function') { this.applyUpdatesFunc(arg1, arg2); + if (arg2 && arg2.noAdjust) return; } else { this.applyUpdatesIndex(arg1, arg2, arg3); + if (arg3 && arg3.noAdjust) return; } this.doAdjust(); @@ -1814,7 +1816,10 @@ angular.module('ui.scroll', []).constant('JQLiteExtras', jqLiteExtras_JQLiteExtr // So we don't need to load top or bottom // This happens when there is a scroll frenzi, and the $digest is slow enough, so it stacks the calls without // giving a chance to the scroll event to be emitted and processed. - if (isPendingScroll()) { + // We also do that if it leads to an absolute scroll + if (isPendingScroll() && calculateAbsoluteScroll() !== undefined) { + // Looks like the event is swallowed on some browsers (FF) on some scroll configuration + resizeAndScrollHandler(); return; } @@ -1972,7 +1977,7 @@ angular.module('ui.scroll', []).constant('JQLiteExtras', jqLiteExtras_JQLiteExtr function resizeAndScrollHandler() { if (rowHeight) { if (scTimer) clearTimeout(scTimer); - scTimer = setTimeout(_resizeAndScrollHandler, 20); + scTimer = setTimeout(_resizeAndScrollHandler, 50); } else { _resizeAndScrollHandler(); } @@ -1984,16 +1989,9 @@ angular.module('ui.scroll', []).constant('JQLiteExtras', jqLiteExtras_JQLiteExtr // We might isolate the averegaRowHeight calculation in the viewport to provide an estimate // and provide a reasonable behavior with variable height as well if (rowHeight) { - scPreviousScrollTop = viewport.scrollTop(); - var newFirst = Math.floor(viewport.scrollTop() / rowHeight) + buffer.minIndex; - newFirst = Math.max(buffer.minIndex, Math.min(buffer.maxIndex, newFirst)); // Bound the scroll - - if (newFirst < buffer.first - bufferSize) { - scrollTo(newFirst); - return; - } + var newFirst = calculateAbsoluteScroll(); - if (newFirst >= buffer.next) { + if (newFirst !== undefined) { scrollTo(newFirst); return; } @@ -2014,6 +2012,24 @@ angular.module('ui.scroll', []).constant('JQLiteExtras', jqLiteExtras_JQLiteExtr } } + function calculateAbsoluteScroll() { + if (rowHeight) { + scPreviousScrollTop = viewport.scrollTop(); + var newFirst = Math.floor(viewport.scrollTop() / rowHeight) + buffer.getAbsMinIndex(); + newFirst = Math.max(buffer.getAbsMinIndex(), Math.min(buffer.getAbsMaxIndex(), newFirst)); // Bound the scroll + + if (newFirst < buffer.first - bufferSize) { + return newFirst; + } + + if (newFirst > buffer.next + bufferSize) { + return newFirst; + } + } + + return undefined; + } + function wheelHandler(event) { if (!adapter.disabled) { var scrollTop = viewport[0].scrollTop; diff --git a/dist/ui-scroll.js.map b/dist/ui-scroll.js.map index 56f186e9..526bc9b9 100644 --- a/dist/ui-scroll.js.map +++ b/dist/ui-scroll.js.map @@ -1 +1 @@ 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1);\n","/*!\n globals: angular, window\n List of used element methods available in JQuery but not in JQuery Lite\n element.before(elem)\n element.height()\n element.outerHeight(true)\n element.height(value) = only for Top/Bottom padding elements\n element.scrollTop()\n element.scrollTop(value)\n */\n\nexport default class JQLiteExtras {\n\n registerFor(element) {\n let convertToPx, css, getStyle, isWindow;\n // angular implementation blows up if elem is the window\n css = angular.element.prototype.css;\n\n element.prototype.css = function (name, value) {\n let self = this;\n let elem = self[0];\n if (!(!elem || elem.nodeType === 3 || elem.nodeType === 8 || !elem.style)) {\n return css.call(self, name, value);\n }\n };\n\n // as defined in angularjs v1.0.5\n isWindow = (obj) => obj && obj.document && obj.location && obj.alert && obj.setInterval;\n\n function scrollTo(self, direction, value) {\n let elem = self[0];\n let [method, prop, preserve] = {\n top: [\n 'scrollTop',\n 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'outerfull' : 'outer');\n },\n outerWidth(option) {\n return getWidthHeight(this[0], 'width', option ? 'outerfull' : 'outer');\n },\n\n /*\n The offset setter method is not implemented\n */\n offset(value) {\n let docElem, win;\n let self = this;\n let box = {\n top: 0,\n left: 0\n };\n let elem = self[0];\n let doc = elem && elem.ownerDocument;\n\n if (arguments.length) {\n if (value === undefined) {\n return self;\n }\n // TODO: implement setter\n throw new Error('offset setter method is not implemented');\n }\n\n if (!doc) {\n return;\n }\n\n docElem = doc.documentElement;\n\n // TODO: Make sure it's not a disconnected DOM node\n\n if (elem.getBoundingClientRect != null) {\n box = elem.getBoundingClientRect();\n }\n\n win = doc.defaultView || doc.parentWindow;\n\n return {\n top: box.top + (win.pageYOffset || docElem.scrollTop) - (docElem.clientTop || 0),\n left: box.left + (win.pageXOffset || docElem.scrollLeft) - (docElem.clientLeft || 0)\n };\n },\n scrollTop(value) {\n return scrollTo(this, 'top', value);\n },\n scrollLeft(value) {\n return scrollTo(this, 'left', value);\n }\n }, (value, key) => {\n if (!element.prototype[key]) {\n return element.prototype[key] = value;\n }\n });\n }\n\n}\n","const hideClassToken = 'ng-ui-scroll-hide';\n\nexport default class ElementRoutines {\n\n static addCSSRules() {\n const selector = '.' + hideClassToken;\n const rules = 'display: none';\n const sheet = document.styleSheets[0];\n let index;\n try {\n index = sheet.cssRules.length;\n } catch (err) {\n index = 0;\n }\n if('insertRule' in sheet) {\n sheet.insertRule(selector + '{' + rules + '}', index);\n }\n else if('addRule' in sheet) {\n sheet.addRule(selector, rules, index);\n }\n }\n\n constructor($injector, $q) {\n this.$animate = ($injector.has && $injector.has('$animate')) ? $injector.get('$animate') : null;\n this.isAngularVersionLessThen1_3 = angular.version.major === 1 && angular.version.minor < 3;\n this.$q = $q;\n }\n\n hideElement(wrapper) {\n wrapper.element.addClass(hideClassToken);\n }\n\n showElement(wrapper) {\n wrapper.element.removeClass(hideClassToken);\n }\n\n insertElement(newElement, previousElement) {\n previousElement.after(newElement);\n return [];\n }\n\n removeElement(wrapper) {\n wrapper.element.remove();\n wrapper.scope.$destroy();\n return [];\n }\n\n insertElementAnimated(newElement, previousElement) {\n if (!this.$animate) {\n return this.insertElement(newElement, previousElement);\n }\n\n if (this.isAngularVersionLessThen1_3) {\n const deferred = this.$q.defer();\n // no need for parent - previous element is never null\n this.$animate.enter(newElement, null, previousElement, () => deferred.resolve());\n\n return [deferred.promise];\n }\n\n // no need for parent - previous element is never null\n return [this.$animate.enter(newElement, null, previousElement)];\n }\n\n removeElementAnimated(wrapper) {\n if (!this.$animate) {\n return this.removeElement(wrapper);\n }\n\n if (this.isAngularVersionLessThen1_3) {\n const deferred = this.$q.defer();\n this.$animate.leave(wrapper.element, () => {\n wrapper.scope.$destroy();\n return deferred.resolve();\n });\n\n return [deferred.promise];\n }\n\n return [(this.$animate.leave(wrapper.element)).then(() => wrapper.scope.$destroy())];\n }\n}","export default function ScrollBuffer(elementRoutines, bufferSize, startIndex, rowHeight) {\n const buffer = Object.create(Array.prototype);\n\n angular.extend(buffer, {\n size: bufferSize,\n\n reset(startIndex) {\n buffer.remove(0, buffer.length);\n buffer.eof = false;\n buffer.bof = false;\n buffer.first = startIndex;\n buffer.next = startIndex;\n buffer.minIndex = startIndex; // Calculated when data is effectively accessed\n buffer.maxIndex = startIndex;\n buffer.minIndexUser = null; // as set by the user (datasource)\n buffer.maxIndexUser = null;\n },\n \n // PHIL: set the new index to be displayed without resettng the sroll and the calculated min/max\n // Note that this actually make sense with a fixed rowHeight when the scroll value can be calculated\n // for a # of rows\n resetStartIndex: function resetStartIndex(startIndex) {\n buffer.remove(0, buffer.length);\n buffer.eof = buffer.eof && startIndex==buffer.maxIndex;\n buffer.bof = buffer.bof && startIndex==buffer.maxIndex;\n buffer.first = startIndex;\n buffer.next = startIndex;\n },\n\n append(items) {\n items.forEach((item) => {\n ++buffer.next;\n buffer.insert('append', item);\n });\n buffer.maxIndex = buffer.eof ? buffer.next - 1 : Math.max(buffer.next - 1, buffer.maxIndex);\n },\n\n prepend(items) {\n items.reverse().forEach((item) => {\n --buffer.first;\n buffer.insert('prepend', item);\n });\n buffer.minIndex = buffer.bof ? buffer.minIndex = buffer.first : Math.min(buffer.first, buffer.minIndex);\n },\n\n /**\n * inserts wrapped element in the buffer\n * the first argument is either operation keyword (see below) or a number for operation 'insert'\n * for insert the number is the index for the buffer element the new one have to be inserted after\n * operations: 'append', 'prepend', 'insert', 'remove', 'update', 'none'\n */\n insert(operation, item, isTop) {\n const wrapper = {\n item: item\n };\n\n if (operation % 1 === 0) {// it is an insert\n wrapper.op = 'insert';\n buffer.splice(operation, 0, wrapper);\n if(isTop) {\n buffer.first--;\n }\n else {\n buffer.next++;\n }\n } else {\n wrapper.op = operation;\n switch (operation) {\n case 'append':\n buffer.push(wrapper);\n break;\n case 'prepend':\n buffer.unshift(wrapper);\n break;\n }\n }\n },\n\n // removes elements from buffer\n remove(arg1, arg2) {\n if (angular.isNumber(arg1)) {\n // removes items from arg1 (including) through arg2 (excluding)\n for (let i = arg1; i < arg2; i++) {\n elementRoutines.removeElement(buffer[i]);\n }\n return buffer.splice(arg1, arg2 - arg1);\n }\n // removes single item(wrapper) from the buffer\n buffer.splice(buffer.indexOf(arg1), 1);\n if(arg1._op === 'isTop' && buffer.first === this.getAbsMinIndex()) {\n this.incrementMinIndex();\n }\n else {\n this.decrementMaxIndex();\n }\n if(arg1._op === 'isTop') {\n buffer.first++;\n }\n else {\n buffer.next--;\n }\n if(!buffer.length) {\n buffer.first = 1;\n buffer.next = 1;\n }\n\n return elementRoutines.removeElementAnimated(arg1);\n },\n\n incrementMinIndex() {\n if(buffer.minIndexUser !== null) {\n if(buffer.minIndex > buffer.minIndexUser) {\n buffer.minIndexUser++;\n return;\n }\n if(buffer.minIndex === buffer.minIndexUser) {\n buffer.minIndexUser++;\n }\n }\n buffer.minIndex++;\n },\n\n decrementMaxIndex() {\n if(buffer.maxIndexUser !== null && buffer.maxIndex <= buffer.maxIndexUser) {\n buffer.maxIndexUser--;\n }\n buffer.maxIndex--;\n },\n\n getAbsMinIndex() {\n if(buffer.minIndexUser !== null) {\n return Math.min(buffer.minIndexUser, buffer.minIndex);\n }\n return buffer.minIndex;\n },\n\n getAbsMaxIndex() {\n if(buffer.maxIndexUser !== null) {\n return Math.max(buffer.maxIndexUser, buffer.maxIndex);\n }\n return buffer.maxIndex;\n },\n\n effectiveHeight(elements) {\n if (!elements.length) {\n return 0;\n }\n let top = Number.MAX_VALUE;\n let bottom = Number.NEGATIVE_INFINITY;\n elements.forEach((wrapper) => {\n if (wrapper.element[0].offsetParent) {\n // element style is not display:none\n top = Math.min(top, wrapper.element.offset().top);\n bottom = Math.max(bottom, wrapper.element.offset().top + (rowHeight || wrapper.element.outerHeight(true)));\n }\n });\n return Math.max(0, bottom - top);\n },\n\n getItems() {\n return buffer.filter(item => item.op === 'none');\n },\n\n getFirstItem() {\n const list = buffer.getItems();\n if (!list.length) {\n return null;\n }\n return list[0].item;\n },\n\n getLastItem() {\n const list = buffer.getItems();\n if (!list.length) {\n return null;\n }\n return list[list.length - 1].item;\n }\n\n });\n\n buffer.reset(startIndex);\n\n return buffer;\n}\n","// Can't just extend the Array, due to Babel does not support built-in classes extending\n// This solution was taken from https://stackoverflow.com/questions/46897414/es6-class-extends-array-workaround-for-es5-babel-transpile\nclass CacheProto {\n add(item) {\n for (let i = this.length - 1; i >= 0; i--) {\n if (this[i].index === item.scope.$index) {\n this[i].height = item.element.outerHeight();\n return;\n }\n }\n this.push({\n index: item.scope.$index,\n height: item.element.outerHeight()\n });\n this.sort((a, b) => ((a.index < b.index) ? -1 : ((a.index > b.index) ? 1 : 0)));\n }\n\n remove(argument, _isTop) {\n const index = argument % 1 === 0 ? argument : argument.scope.$index;\n const isTop = argument % 1 === 0 ? _isTop : argument._op === 'isTop';\n for (let i = this.length - 1; i >= 0; i--) {\n if (this[i].index === index) {\n this.splice(i, 1);\n break;\n }\n }\n if(!isTop) {\n for (let i = this.length - 1; i >= 0; i--) {\n if (this[i].index > index) {\n this[i].index--;\n }\n }\n }\n }\n\n clear() {\n this.length = 0;\n }\n}\n\nfunction Cache() {\n const instance = [];\n instance.push.apply(instance, arguments);\n Object.setPrototypeOf(instance, Cache.prototype);\n return instance;\n}\nCache.prototype = Object.create(Array.prototype);\nObject.getOwnPropertyNames(CacheProto.prototype).forEach(methodName =>\n Cache.prototype[methodName] = CacheProto.prototype[methodName]\n);\n\nfunction generateElement(template) {\n if(template.nodeType !== Node.ELEMENT_NODE) {\n throw new Error('ui-scroll directive requires an Element node for templating the view');\n }\n let element;\n switch (template.tagName.toLowerCase()) {\n case 'dl':\n throw new Error(`ui-scroll directive does not support <${template.tagName}> as a repeating tag: ${template.outerHTML}`);\n case 'tr':\n let table = angular.element('
    ');\n element = table.find('tr');\n break;\n case 'li':\n element = angular.element('
  • ');\n break;\n default:\n element = angular.element('
    ');\n }\n return element;\n}\n\n//\n// Padding represents the dummy element added to both the top and the bottom of the scrolling container\n// It holds the element, as well as a cache for the items (rows) height. In case of a fixed rowHeight, the \n// cache is not used and thus is not created.\n//\nclass Padding {\n constructor(template,useCache) {\n this.element = generateElement(template);\n if(useCache) {\n this.cache = new Cache();\n }\n }\n\n height() {\n // When called with a parameter, this sets the height of the padding\n return this.element.height.apply(this.element, arguments);\n }\n}\n\nexport default Padding;","import Padding from './padding';\n\nexport default function Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding, rowHeight) {\n let topPadding = null;\n let bottomPadding = null;\n const viewport = viewportController && viewportController.viewport ? viewportController.viewport : angular.element(window);\n const container = viewportController && viewportController.container ? viewportController.container : undefined;\n const scope = viewportController && viewportController.scope ? viewportController.scope : $rootScope;\n\n viewport.css({\n 'overflow-anchor': 'none',\n 'overflow-y': 'auto',\n 'display': 'block'\n });\n\n function bufferPadding() {\n return viewport.outerHeight() * padding; // some extra space to initiate preload\n }\n\n // \n // Viewport measurements\n //\n // +----------------+ 0\n // | top |\n // | padding |\n // +----------------+ topDataPos() [=topPadding.height]\n // | not visible |\n // | items |\n // +----------------+ topVisiblePos() [=viewport.scrollTop]\n // | |\n // | visible |\n // | items |\n // | |\n // +----------------+ bottomVisiblePos() [=viewport.scrollTop+viewport.height]\n // | not visible |\n // | items |\n // +----------------+ bottomDataPos() [=scrollHeight-bottomPadding.height]\n // | bottom |\n // | padding |\n // +----------------+ scrollHeight \n //\n // bufferPadding is some extra space we have top & bottom to allow infinite scrolling\n // bufferPadding = viewport.outerHeight() * padding\n //\n // bottomVisiblePos() - topVisiblePos() == viewport.outerHeight()\n \n\n angular.extend(viewport, {\n getScope() {\n return scope;\n },\n\n createPaddingElements(template) {\n topPadding = new Padding(template,!rowHeight);\n bottomPadding = new Padding(template,!rowHeight);\n element.before(topPadding.element);\n element.after(bottomPadding.element);\n topPadding.height(0);\n bottomPadding.height(0);\n },\n\n applyContainerStyle() {\n if (!container) {\n return true;\n }\n if(container !== viewport) {\n viewport.css('height', window.getComputedStyle(container[0]).height);\n }\n return viewport.height() > 0;\n },\n\n bottomDataPos() {\n let scrollHeight = viewport[0].scrollHeight;\n scrollHeight = scrollHeight != null ? scrollHeight : viewport[0].document.documentElement.scrollHeight;\n return scrollHeight - bottomPadding.height();\n },\n\n topDataPos() {\n return topPadding.height();\n },\n\n bottomVisiblePos() {\n return viewport.scrollTop() + viewport.outerHeight();\n },\n\n topVisiblePos() {\n return viewport.scrollTop();\n },\n\n insertElement(e, sibling) {\n return elementRoutines.insertElement(e, sibling || topPadding.element);\n },\n\n insertElementAnimated(e, sibling) {\n return elementRoutines.insertElementAnimated(e, sibling || topPadding.element);\n },\n\n shouldLoadBottom() {\n return !buffer.eof && viewport.bottomDataPos() < viewport.bottomVisiblePos() + bufferPadding();\n },\n\n clipBottom() {\n // clip the invisible items off the bottom\n let overage = 0;\n let emptySpaceHeight = viewport.bottomDataPos() - viewport.bottomVisiblePos() - bufferPadding();\n if(rowHeight) {\n overage = Math.min(buffer.length,Math.floor(emptySpaceHeight/rowHeight));\n } else {\n let itemHeight = 0;\n let overageHeight = 0;\n\n for (let i = buffer.length - 1; i >= 0; i--) {\n itemHeight = buffer[i].element.outerHeight(true);\n if (overageHeight + itemHeight > emptySpaceHeight) {\n break;\n }\n bottomPadding.cache.add(buffer[i]);\n overageHeight += itemHeight;\n overage++;\n }\n }\n\n if (overage > 0) {\n buffer.eof = false;\n buffer.remove(buffer.length - overage, buffer.length);\n buffer.next -= overage;\n viewport.adjustPaddings();\n }\n },\n\n shouldLoadTop() {\n return !buffer.bof && (viewport.topDataPos() > viewport.topVisiblePos() - bufferPadding());\n },\n\n clipTop() {\n // clip the invisible items off the top\n let overage = 0;\n let overageHeight = 0;\n let emptySpaceHeight = viewport.topVisiblePos() - viewport.topDataPos() - bufferPadding();\n if(rowHeight) {\n overage = Math.min(buffer.length,Math.floor(emptySpaceHeight/rowHeight));\n overageHeight = overage * rowHeight;\n } else {\n let itemHeight = 0;\n\n for (let i = 0; i < buffer.length; i++) {\n itemHeight = buffer[i].element.outerHeight(true);\n if (overageHeight + itemHeight > emptySpaceHeight) {\n break;\n }\n topPadding.cache.add(buffer[i]);\n overageHeight += itemHeight;\n overage++;\n }\n }\n\n if (overage > 0) {\n // we need to adjust top padding element before items are removed from top\n // to avoid strange behaviour of scroll bar during remove top items when we are at the very bottom\n topPadding.height(topPadding.height() + overageHeight);\n buffer.bof = false;\n buffer.remove(0, overage);\n buffer.first += overage;\n }\n },\n\n // PHIL: remove all the entries in the buffer without changing the scrollbar, nor the scroll position\n // and update the padding accordingly\n // It is designed to work with non fixed rowHeight, although it will need more tests in this area...\n scrollTo(first) {\n if(rowHeight) {\n first = Math.min(first, buffer.maxIndex);\n first = Math.max(first, buffer.minIndex);\n const min = buffer.getAbsMinIndex(); \n const max = buffer.getAbsMaxIndex();\n // Adjust the paddings before removing the elements to avoid touching the scroll top position\n topPadding.height((first-min)*rowHeight);\n bottomPadding.height(((max+1)-first)*rowHeight);\n buffer.resetStartIndex(first);\n } else {\n buffer.resetStartIndex(first);\n viewport.adjustPaddings();\n } \n },\n \n adjustPaddings() {\n if(rowHeight) {\n const min = buffer.getAbsMinIndex(); \n const max = buffer.getAbsMaxIndex();\n topPadding.height((buffer.first-min)*rowHeight);\n // PHIL: next points to the next possible item, while max is the index of the last one.\n // In order to make them compatible, we should add one to max\n // Also, it looks like buffer is not changing maxIndex when an element is inserted/appended\n // Not sure if this can have a consequence or not....\n bottomPadding.height(((max+1)-buffer.next)*rowHeight);\n return;\n }\n\n if (!buffer.length) {\n return;\n }\n\n // precise heights calculation based on items that are in buffer or that were in buffer once\n const visibleItemsHeight = buffer.reduce((summ, item) => summ + item.element.outerHeight(true), 0);\n let topPaddingHeight = 0, topCount = 0;\n topPadding.cache.forEach(item => {\n if(item.index < buffer.first) {\n topPaddingHeight += item.height;\n topCount++;\n }\n });\n \n let bottomPaddingHeight = 0, bottomCount = 0;\n bottomPadding.cache.forEach(item => {\n if(item.index >= buffer.next) {\n bottomPaddingHeight += item.height;\n bottomCount++;\n }\n });\n \n const totalHeight = visibleItemsHeight + topPaddingHeight + bottomPaddingHeight;\n const averageItemHeight = totalHeight / (topCount + bottomCount + buffer.length); \n\n // average heights calculation, items that have never been reached\n let adjustTopPadding = buffer.minIndexUser !== null && buffer.minIndex > buffer.minIndexUser;\n let adjustBottomPadding = buffer.maxIndexUser !== null && buffer.maxIndex < buffer.maxIndexUser;\n let topPaddingHeightAdd = adjustTopPadding ? (buffer.minIndex - buffer.minIndexUser) * averageItemHeight : 0;\n let bottomPaddingHeightAdd = adjustBottomPadding ? (buffer.maxIndexUser - buffer.maxIndex) * averageItemHeight : 0;\n\n // paddings combine adjustment\n topPadding.height(topPaddingHeight + topPaddingHeightAdd);\n bottomPadding.height(bottomPaddingHeight + bottomPaddingHeightAdd);\n },\n\n onAfterMinIndexSet(topPaddingHeightOld) {\n // additional scrollTop adjustment in case of datasource.minIndex external set\n if (buffer.minIndexUser !== null && buffer.minIndex > buffer.minIndexUser) {\n let diff = topPadding.height() - topPaddingHeightOld;\n viewport.scrollTop(viewport.scrollTop() + diff);\n while((diff -= viewport.scrollTop()) > 0) {\n bottomPadding.height(bottomPadding.height() + diff);\n viewport.scrollTop(viewport.scrollTop() + diff);\n }\n }\n },\n\n onAfterPrepend(updates) {\n if (!updates.prepended.length)\n return;\n const height = buffer.effectiveHeight(updates.prepended);\n const paddingHeight = topPadding.height() - height;\n if (paddingHeight >= 0) {\n topPadding.height(paddingHeight);\n }\n else {\n topPadding.height(0);\n viewport.scrollTop(viewport.scrollTop() - paddingHeight);\n }\n },\n\n resetTopPadding() {\n topPadding.height(0);\n if(topPadding.cache) {\n topPadding.cache.clear();\n }\n },\n\n resetBottomPadding() {\n bottomPadding.height(0);\n if(bottomPadding.cache) {\n bottomPadding.cache.clear();\n }\n },\n\n removeCacheItem(item, isTop) {\n if(topPadding.cache) {\n topPadding.cache.remove(item, isTop);\n }\n if(bottomPadding.cache) {\n bottomPadding.cache.remove(item, isTop);\n }\n },\n\n removeItem(item) {\n this.removeCacheItem(item);\n return buffer.remove(item);\n }\n });\n\n return viewport;\n}\n","class Adapter {\n\n constructor($scope, $parse, $attr, viewport, buffer, doAdjust, reload) {\n this.$parse = $parse;\n this.$attr = $attr;\n this.viewport = viewport;\n this.buffer = buffer;\n\n this.doAdjust = doAdjust;\n this.reload = reload;\n\n this.isLoading = false;\n this.disabled = false;\n\n const viewportScope = viewport.getScope();\n this.startScope = viewportScope.$parent ? viewportScope : $scope;\n\n this.publicContext = {};\n this.assignAdapter($attr.adapter);\n this.generatePublicContext();\n }\n\n assignAdapter(adapterAttr) {\n if (!adapterAttr || !(adapterAttr = adapterAttr.replace(/^\\s+|\\s+$/gm, ''))) {\n return;\n }\n let adapterOnScope;\n\n try {\n this.$parse(adapterAttr).assign(this.startScope, {});\n adapterOnScope = this.$parse(adapterAttr)(this.startScope);\n }\n catch (error) {\n error.message = `Angular ui-scroll Adapter assignment exception.\\n` +\n `Can't parse \"${adapterAttr}\" expression.\\n` +\n error.message;\n throw error;\n }\n\n angular.extend(adapterOnScope, this.publicContext);\n this.publicContext = adapterOnScope;\n }\n\n generatePublicContext() {\n // these methods will be accessible out of ui-scroll via user defined adapter\n const publicMethods = ['reload', 'applyUpdates', 'append', 'prepend', 'isBOF', 'isEOF', 'isEmpty'];\n for (let i = publicMethods.length - 1; i >= 0; i--) {\n this.publicContext[publicMethods[i]] = this[publicMethods[i]].bind(this);\n }\n\n // these read-only props will be accessible out of ui-scroll via user defined adapter\n const publicProps = ['isLoading', 'topVisible', 'topVisibleElement', 'topVisibleScope', 'bottomVisible', 'bottomVisibleElement', 'bottomVisibleScope'];\n for (let i = publicProps.length - 1; i >= 0; i--) {\n let property, attr = this.$attr[publicProps[i]];\n Object.defineProperty(this, publicProps[i], {\n get: () => property,\n set: (value) => {\n property = value;\n this.publicContext[publicProps[i]] = value;\n if (attr) {\n this.$parse(attr).assign(this.startScope, value);\n }\n }\n });\n }\n\n // read-only immediately calculated public properties\n const publicPropsImmediate = ['bufferFirst', 'bufferLast', 'bufferLength'];\n for (let i = publicPropsImmediate.length - 1; i >= 0; i--) {\n Object.defineProperty(this.publicContext, publicPropsImmediate[i], {\n get: () => this[publicPropsImmediate[i]]\n });\n }\n\n // non-read-only public property\n Object.defineProperty(this.publicContext, 'disabled', {\n get: () => this.disabled,\n set: (value) => (!(this.disabled = value)) ? this.doAdjust() : null\n });\n }\n\n loading(value) {\n this.isLoading = value;\n }\n\n isBOF() {\n return this.buffer.bof;\n }\n\n isEOF() {\n return this.buffer.eof;\n }\n\n isEmpty() {\n return !this.buffer.length;\n }\n\n get bufferLength() {\n return this.buffer.getItems().length;\n }\n\n get bufferFirst() {\n return this.buffer.getFirstItem();\n }\n\n get bufferLast() {\n return this.buffer.getLastItem();\n }\n\n append(newItems) {\n this.buffer.append(newItems);\n this.doAdjust();\n this.viewport.clipTop();\n this.viewport.clipBottom();\n }\n\n prepend(newItems) {\n this.buffer.prepend(newItems);\n this.doAdjust();\n this.viewport.clipTop();\n this.viewport.clipBottom();\n }\n\n applyUpdates(arg1, arg2, arg3) {\n if (typeof arg1 === 'function') {\n this.applyUpdatesFunc(arg1, arg2);\n } else {\n this.applyUpdatesIndex(arg1, arg2, arg3);\n }\n this.doAdjust();\n }\n\n applyUpdatesFunc(cb, options) {\n this.buffer.slice(0).forEach((wrapper) => {\n // we need to do it on the buffer clone, because buffer content\n // may change as we iterate through\n this.applyUpdate(wrapper, cb(wrapper.item, wrapper.scope, wrapper.element), options);\n });\n }\n\n applyUpdatesIndex(index, newItems, options = {}) {\n if (index % 1 !== 0) {\n throw new Error('applyUpdates - ' + index + ' is not a valid index (should be an integer)');\n }\n const _index = index - this.buffer.first;\n\n // apply updates only within buffer\n if (_index >= 0 && _index < this.buffer.length) {\n this.applyUpdate(this.buffer[_index], newItems, options);\n }\n // out-of-buffer case: deletion may affect Paddings\n else if(index >= this.buffer.getAbsMinIndex() && index <= this.buffer.getAbsMaxIndex()) {\n if(angular.isArray(newItems) && !newItems.length) {\n this.viewport.removeCacheItem(index, !options.immutableTop && index === this.buffer.minIndex);\n if (!options.immutableTop && index === this.buffer.getAbsMinIndex()) {\n this.buffer.incrementMinIndex();\n }\n else {\n this.buffer.decrementMaxIndex();\n }\n }\n }\n }\n\n applyUpdate(wrapper, newItems, options = {}) {\n if (!angular.isArray(newItems)) {\n return;\n }\n let position = this.buffer.indexOf(wrapper);\n if (!newItems.reverse().some(newItem => newItem === wrapper.item)) {\n wrapper.op = 'remove';\n if (!options.immutableTop && position === 0 && !newItems.length) {\n wrapper._op = 'isTop'; // to catch \"first\" edge case on remove\n }\n }\n newItems.forEach((newItem) => {\n if (newItem === wrapper.item) {\n position--;\n } else {\n // 3 parameter (isTop) is to catch \"first\" edge case on insert\n this.buffer.insert(position + 1, newItem, !options.immutableTop && position === -1);\n }\n });\n }\n\n calculateProperties() {\n let rowTop = null, topHeight = 0;\n let topDone = false, bottomDone = false;\n const length = this.buffer.length;\n\n for (let i = 0; i < length; i++) {\n const item = this.buffer[i];\n const itemTop = item.element.offset().top;\n\n if (rowTop !== itemTop) { // a new row condition\n const itemHeight = item.element.outerHeight(true);\n const top = this.viewport.topDataPos() + topHeight + itemHeight;\n\n if (!topDone && top > this.viewport.topVisiblePos()) {\n topDone = true;\n this['topVisible'] = item.item;\n this['topVisibleElement'] = item.element;\n this['topVisibleScope'] = item.scope;\n }\n if (!bottomDone && (top >= this.viewport.bottomVisiblePos() || (i === length - 1 && this.isEOF()))) {\n bottomDone = true;\n this['bottomVisible'] = item.item;\n this['bottomVisibleElement'] = item.element;\n this['bottomVisibleScope'] = item.scope;\n }\n topHeight += itemHeight;\n }\n rowTop = itemTop;\n\n if (topDone && bottomDone) {\n break;\n }\n }\n }\n\n}\n\nexport default Adapter;\n","import JQLiteExtras from './modules/jqLiteExtras';\nimport ElementRoutines from './modules/elementRoutines.js';\nimport ScrollBuffer from './modules/buffer.js';\nimport Viewport from './modules/viewport.js';\nimport Adapter from './modules/adapter.js';\n\nangular.module('ui.scroll', [])\n\n .constant('JQLiteExtras', JQLiteExtras)\n .run(['JQLiteExtras', (JQLiteExtras) => {\n const elt = angular.element;\n !(window.jQuery && elt.fn && elt.fn.jquery) ? (new JQLiteExtras()).registerFor(elt) : null;\n ElementRoutines.addCSSRules();\n }])\n\n .directive('uiScrollViewport', function () {\n return {\n restrict: 'A',\n controller: [\n '$scope',\n '$element',\n function (scope, element) {\n this.container = element;\n this.viewport = element;\n this.scope = scope;\n\n angular.forEach(element.children(), child => {\n if (child.tagName.toLowerCase() === 'tbody') {\n this.viewport = angular.element(child);\n }\n });\n\n return this;\n }\n ]\n };\n })\n\n .directive('uiScroll', [\n '$log',\n '$injector',\n '$rootScope',\n '$timeout',\n '$interval',\n '$q',\n '$parse',\n function (console, $injector, $rootScope, $timeout, $interval, $q, $parse) {\n\n return {\n require: ['?^uiScrollViewport'],\n restrict: 'A',\n transclude: 'element',\n priority: 1000,\n terminal: true,\n link: link\n };\n\n function link($scope, element, $attr, controllers, linker) {\n const match = $attr.uiScroll.match(/^\\s*(\\w+)\\s+in\\s+([(\\w|\\$)\\.]+)\\s*$/);\n if (!match) {\n throw new Error('Expected uiScroll in form of \\'_item_ in _datasource_\\' but got \\'' + $attr.uiScroll + '\\'');\n }\n\n function parseNumber(value, defaultValue, isFloat) {\n if (!isFloat) {\n value = value === null ? defaultValue : Math.floor(value);\n }\n return isNaN(value) ? defaultValue : value;\n }\n\n function parseNumericAttr(value, defaultValue, isFloat) {\n const result = $parse(value)($scope);\n return parseNumber(result, defaultValue, isFloat);\n }\n\n const BUFFER_MIN = 3; // Minimum size of the data source request\n const BUFFER_DEFAULT = 10; // Default datasource request size\n const PADDING_MIN = 0.3; // Mininum # of rows in the padding area\n const PADDING_DEFAULT = 0.5; // Default # of rows in the padding area\n const START_INDEX_DEFAULT = 1; // Default start index when requestng the first data block\n const MAX_VIEWPORT_DELAY = 500; // Max time wait (ms) to get the viewport with an height>0\n const VIEWPORT_POLLING_INTERVAL = 50; // Interval used to check the initial viewport height\n\n let datasource = null;\n const itemName = match[1]; // Name of the index variable to publish\n const datasourceName = match[2]; // Name of the datasource to request the rows from\n const viewportController = controllers[0]; // ViewportController, as specified in the require option (http://websystique.com/angularjs/angularjs-custom-directives-controllers-require-option-guide/)\n const bufferSize = Math.max(BUFFER_MIN, parseNumericAttr($attr.bufferSize, BUFFER_DEFAULT)); \n const padding = Math.max(PADDING_MIN, parseNumericAttr($attr.padding, PADDING_DEFAULT, true));\n let startIndex = parseNumericAttr($attr.startIndex, START_INDEX_DEFAULT);\n\n // PHIL: Provide a fixed row height\n // \n const rowHeight = parseNumericAttr($attr.rowHeight, null, false);\n\n // PHIL: Read the visibility watch option, true by default\n const allowVisibilityWatch = $attr.allowVisibilityWatch!=='false';\n\n // Revision IDs\n // \n let ridActual = 0; // current data revision id\n let pending = [];\n\n const elementRoutines = new ElementRoutines($injector, $q);\n const buffer = new ScrollBuffer(elementRoutines, bufferSize, startIndex, rowHeight);\n const viewport = new Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding, rowHeight);\n const adapter = new Adapter($scope, $parse, $attr, viewport, buffer, doAdjust, reload);\n\n if (viewportController) {\n viewportController.adapter = adapter;\n }\n\n // Currently, we only debounce the scroll events when a fixed rowHeight is provided\n // as the unit tests will have to be adapted to support this feature\n let scPreviousScrollTop=-1;\n\n const isDatasourceValid = () =>\n Object.prototype.toString.call(datasource) === '[object Object]' && typeof datasource.get === 'function';\n\n datasource = $parse(datasourceName)($scope); // try to get datasource on scope\n if (!isDatasourceValid()) {\n datasource = $injector.get(datasourceName); // try to inject datasource as service\n if (!isDatasourceValid()) {\n throw new Error(datasourceName + ' is not a valid datasource');\n }\n }\n\n let onRenderHandlers = [];\n function onRenderHandlersRunner() {\n onRenderHandlers.forEach(handler => handler.run());\n onRenderHandlers = [];\n }\n function persistDatasourceIndex(datasource, propName) {\n let getter;\n // need to postpone min/maxIndexUser processing if the view is empty\n if(angular.isNumber(datasource[propName])) {\n getter = datasource[propName];\n if(angular.isNumber(getter)) {\n onRenderHandlers = onRenderHandlers.filter(handler => handler.id !== propName);\n onRenderHandlers.push({\n id: propName,\n run: () => datasource[propName] = getter\n });\n }\n }\n }\n\n function defineDatasourceIndex(datasource, propName, propUserName) {\n const descriptor = Object.getOwnPropertyDescriptor(datasource, propName);\n if (descriptor && (descriptor.set || descriptor.get)) {\n return;\n }\n let getter;\n persistDatasourceIndex(datasource, propName);\n Object.defineProperty(datasource, propName, {\n set: (value) => {\n getter = value;\n if(pending.length && !buffer.length) {\n persistDatasourceIndex(datasource, propName);\n return;\n }\n buffer[propUserName] = value;\n const topPaddingHeightOld = viewport.topDataPos();\n viewport.adjustPaddings();\n if (propName === 'minIndex') {\n viewport.onAfterMinIndexSet(topPaddingHeightOld);\n }\n },\n get: () => getter\n });\n }\n\n defineDatasourceIndex(datasource, 'minIndex', 'minIndexUser');\n defineDatasourceIndex(datasource, 'maxIndex', 'maxIndexUser');\n\n const fetchNext = (datasource.get.length !== 2) ?\n (success) => datasource.get(buffer.next, bufferSize, success) :\n (success) => {\n datasource.get({\n index: buffer.next,\n append: buffer.length ? buffer[buffer.length - 1].item : void 0,\n count: bufferSize\n }, success);\n };\n\n const fetchPrevious = (datasource.get.length !== 2) ?\n (success) => datasource.get(buffer.first - bufferSize, bufferSize, success) :\n (success) => {\n datasource.get({\n index: buffer.first - bufferSize,\n prepend: buffer.length ? buffer[0].item : void 0,\n count: bufferSize\n }, success);\n };\n\n const initialize = () => {\n let tryCount = 0;\n if(!viewport.applyContainerStyle()) {\n const timer = $interval(() => {\n tryCount++;\n if(viewport.applyContainerStyle()) {\n $interval.cancel(timer);\n doAdjust();\n }\n if(tryCount * VIEWPORT_POLLING_INTERVAL >= MAX_VIEWPORT_DELAY) {\n $interval.cancel(timer);\n throw Error(`ui-scroll directive requires a viewport with non-zero height in ${MAX_VIEWPORT_DELAY}ms`);\n }\n }, VIEWPORT_POLLING_INTERVAL);\n }\n else {\n doAdjust();\n }\n };\n\n /**\n * Build padding elements\n *\n * Calling linker is the only way I found to get access to the tag name of the template\n * to prevent the directive scope from pollution a new scope is created and destroyed\n * right after the builder creation is completed\n */\n linker((clone, scope) => {\n viewport.createPaddingElements(clone[0]);\n // we do not include the clone in the DOM. It means that the nested directives will not\n // be able to reach the parent directives, but in this case it is intentional because we\n // created the clone to access the template tag name\n scope.$destroy();\n clone.remove();\n });\n\n $scope.$on('$destroy', () => {\n unbindEvents();\n viewport.unbind('mousewheel', wheelHandler);\n });\n\n viewport.bind('mousewheel', wheelHandler);\n\n initialize();\n\n /* Private function definitions */\n\n function isInvalid(rid) {\n return (rid && rid !== ridActual) || $scope.$$destroyed;\n }\n\n function bindEvents() {\n viewport.bind('resize', resizeAndScrollHandler);\n viewport.bind('scroll', resizeAndScrollHandler);\n // If a scroll event happened while the handler was not bounded, emit the scroll\n if(isPendingScroll()) {\n // Do it immediately\n _resizeAndScrollHandler();\n }\n }\n\n function unbindEvents() {\n viewport.unbind('resize', resizeAndScrollHandler);\n viewport.unbind('scroll', resizeAndScrollHandler);\n }\n\n function reload() {\n unbindEvents();\n viewport.resetTopPadding();\n viewport.resetBottomPadding();\n if (arguments.length) {\n startIndex = parseNumber(arguments[0], START_INDEX_DEFAULT, false);\n }\n buffer.reset(startIndex);\n scPreviousScrollTop = -1; // Avoid isScrollPending() to be true\n persistDatasourceIndex(datasource, 'minIndex');\n persistDatasourceIndex(datasource, 'maxIndex');\n doAdjust();\n }\n\n function scrollTo(first) {\n unbindEvents();\n viewport.scrollTo(first);\n doAdjust();\n }\n\n function isElementVisible(wrapper) {\n return (rowHeight || wrapper.element.height()) && wrapper.element[0].offsetParent;\n }\n\n function visibilityWatcher(wrapper) {\n if (isElementVisible(wrapper)) {\n buffer.forEach((item) => {\n if (typeof item.unregisterVisibilityWatcher === 'function') {\n item.unregisterVisibilityWatcher();\n delete item.unregisterVisibilityWatcher;\n }\n });\n if (!pending.length) {\n $timeout(() => doAdjust());\n }\n }\n }\n\n function insertWrapperContent(wrapper, insertAfter) {\n createElement(wrapper, insertAfter, viewport.insertElement);\n if (allowVisibilityWatch && !isElementVisible(wrapper)) {\n wrapper.unregisterVisibilityWatcher = wrapper.scope.$watch(() => visibilityWatcher(wrapper));\n }\n if (allowVisibilityWatch) {\n elementRoutines.hideElement(wrapper); // hide inserted elements before data binding\n }\n }\n\n function createElement(wrapper, insertAfter, insertElement) {\n let promises = null;\n const sibling = (insertAfter > 0) ? buffer[insertAfter - 1].element : undefined;\n linker((clone, scope) => {\n promises = insertElement(clone, sibling);\n wrapper.element = clone;\n wrapper.scope = scope;\n scope[itemName] = wrapper.item;\n });\n // ui-scroll-grid apply\n if (adapter.transform) {\n const tdInitializer = wrapper.scope.uiScrollTdInitializer;\n if (tdInitializer && tdInitializer.linking) {\n adapter.transform(wrapper.scope, wrapper.element);\n } else {\n wrapper.scope.uiScrollTdInitializer = {\n onLink: () => adapter.transform(wrapper.scope, wrapper.element),\n scope: wrapper.scope\n };\n }\n }\n return promises;\n }\n\n function updateDOM() {\n let promises = [];\n const toBePrepended = [];\n const toBeRemoved = [];\n const inserted = [];\n\n buffer.forEach((wrapper, i) => {\n switch (wrapper.op) {\n case 'prepend':\n toBePrepended.unshift(wrapper);\n break;\n case 'append':\n insertWrapperContent(wrapper, i);\n wrapper.op = 'none';\n inserted.push(wrapper);\n break;\n case 'insert':\n promises = promises.concat(createElement(wrapper, i, viewport.insertElementAnimated));\n wrapper.op = 'none';\n inserted.push(wrapper);\n break;\n case 'remove':\n toBeRemoved.push(wrapper);\n }\n });\n\n toBeRemoved.forEach((wrapper) => promises = promises.concat(viewport.removeItem(wrapper)));\n\n if (toBePrepended.length)\n toBePrepended.forEach((wrapper) => {\n insertWrapperContent(wrapper);\n wrapper.op = 'none';\n });\n\n buffer.forEach((item, i) => item.scope.$index = buffer.first + i);\n\n return {\n prepended: toBePrepended,\n removed: toBeRemoved,\n inserted: inserted,\n animated: promises\n };\n\n }\n\n // Adjust the viewport paddings\n // \n function updatePaddings(rid, updates) {\n // schedule another doAdjust after animation completion\n if (updates.animated.length) {\n $q.all(updates.animated).then(() => {\n viewport.adjustPaddings();\n doAdjust(rid);\n });\n } else {\n viewport.adjustPaddings();\n }\n }\n\n function enqueueFetch(rid, updates) {\n // If there is a scroll pending, we don't enqueue the fetch as the scroll might be an absolute scroll\n // So we don't need to load top or bottom\n // This happens when there is a scroll frenzi, and the $digest is slow enough, so it stacks the calls without\n // giving a chance to the scroll event to be emitted and processed.\n if(isPendingScroll()) {\n return;\n }\n\n if (viewport.shouldLoadBottom()) {\n if (!updates || buffer.effectiveHeight(updates.inserted) > 0) {\n // this means that at least one item appended in the last batch has height > 0\n if (pending.push(true) === 1) {\n adapter.loading(true);\n fetch(rid);\n }\n }\n } else if (viewport.shouldLoadTop()) {\n if ((!updates || buffer.effectiveHeight(updates.prepended) > 0) || pending[0]) {\n // this means that at least one item appended in the last batch has height > 0\n // pending[0] = true means that previous fetch was appending. We need to force at least one prepend\n // BTW there will always be at least 1 element in the pending array because bottom is fetched first\n if (pending.push(false) === 1) {\n adapter.loading(true);\n fetch(rid);\n }\n }\n }\n }\n\n function processUpdates() {\n const updates = updateDOM();\n\n // We need the item bindings to be processed before we can do adjustments\n // If there are no changes and the row-height is static, then ignore it!\n const changes = updates.animated.length+updates.inserted.length+updates.prepended.length+updates.removed.length;\n if(changes || !rowHeight) {\n !$scope.$$phase && !$rootScope.$$phase && $scope.$digest();\n }\n\n if (allowVisibilityWatch) {\n updates.inserted.forEach(w => elementRoutines.showElement(w));\n updates.prepended.forEach(w => elementRoutines.showElement(w));\n }\n\n return updates;\n }\n\n function doAdjust(rid) {\n if (!rid) { // dismiss pending requests\n pending = [];\n rid = ++ridActual;\n }\n\n const updates = processUpdates();\n\n if (isInvalid(rid)) {\n return;\n }\n\n updatePaddings(rid, updates);\n enqueueFetch(rid);\n\n if (!pending.length) {\n adapter.calculateProperties();\n }\n }\n\n function doAdjustAfterFetch(rid) {\n const updates = processUpdates();\n\n viewport.onAfterPrepend(updates);\n\n if (isInvalid(rid)) {\n return;\n }\n\n updatePaddings(rid, updates);\n onRenderHandlersRunner();\n enqueueFetch(rid, updates);\n pending.shift();\n\n if (pending.length)\n fetch(rid);\n else {\n adapter.loading(false);\n bindEvents();\n adapter.calculateProperties();\n }\n }\n\n function fetch(rid) {\n if (pending[0]) {// scrolling down\n if (buffer.length && !viewport.shouldLoadBottom()) {\n doAdjustAfterFetch(rid);\n } else {\n fetchNext((result) => {\n if (isInvalid(rid)) {\n return;\n }\n\n if (result.length < bufferSize) {\n buffer.eof = true;\n }\n\n if (result.length > 0) {\n viewport.clipTop();\n buffer.append(result);\n }\n\n doAdjustAfterFetch(rid);\n });\n }\n } else { // scrolling up\n if (buffer.length && !viewport.shouldLoadTop()) {\n doAdjustAfterFetch(rid);\n } else {\n fetchPrevious((result) => {\n if (isInvalid(rid)) {\n return;\n }\n\n if (result.length < bufferSize) {\n buffer.bof = true;\n // log 'bof is reached'\n }\n\n if (result.length > 0) {\n if (buffer.length) {\n viewport.clipBottom();\n }\n buffer.prepend(result);\n }\n\n doAdjustAfterFetch(rid);\n });\n }\n }\n }\n \n function isPendingScroll() {\n if(rowHeight) {\n // Maybe the scroll changed but the event has *not* yet being dispatched\n // because of the $digest running and taking to long\n var sc = viewport.scrollTop();\n if(sc!=scPreviousScrollTop && scPreviousScrollTop>=0) {\n return true;\n }\n }\n return false;\n }\n\n // Deboucing the scroll events avois intermediate $digest when scrolling fast\n let scTimer;\n function resizeAndScrollHandler() {\n if (rowHeight) {\n if (scTimer) clearTimeout(scTimer);\n scTimer = setTimeout(_resizeAndScrollHandler, 20);\n } else {\n _resizeAndScrollHandler();\n }\n }\n\n function _resizeAndScrollHandler() {\n if (!$rootScope.$$phase && !adapter.isLoading && !adapter.disabled) {\n // Absolute positioning currently only works when a fixed rowHeight is provided\n // We might isolate the averegaRowHeight calculation in the viewport to provide an estimate\n // and provide a reasonable behavior with variable height as well\n if(rowHeight) {\n scPreviousScrollTop = viewport.scrollTop();\n let newFirst = Math.floor(viewport.scrollTop() / rowHeight) + buffer.minIndex;\n newFirst = Math.max(buffer.minIndex, Math.min(buffer.maxIndex,newFirst)); // Bound the scroll\n if (newFirst=buffer.next) {\n scrollTo(newFirst);\n return;\n } \n }\n\n enqueueFetch(ridActual);\n\n if (pending.length) {\n unbindEvents();\n } else {\n adapter.calculateProperties();\n if(!rowHeight) {\n // The digest is forced to calculate the height, which is not necessary when the height is knowm\n !$scope.$$phase && $scope.$digest();\n }\n }\n }\n }\n\n function wheelHandler(event) {\n if (!adapter.disabled) {\n const scrollTop = viewport[0].scrollTop;\n const yMax = viewport[0].scrollHeight - viewport[0].clientHeight;\n\n if ((scrollTop === 0 && !buffer.bof) || (scrollTop === yMax && !buffer.eof)) {\n event.preventDefault();\n }\n }\n }\n }\n\n }\n ]);\n"],"sourceRoot":""} \ No newline at end of file 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<= ref ? j <= ref : j >= ref; i = 1 <= ref ? ++j : --j) {\n if (children[i] === elem) {\n angular.element(children[i - 1]).after(newElem);\n return;\n }\n }\n throw new Error('invalid DOM structure ' + elem.outerHTML);\n }\n },\n height (value){\n var self;\n self = this;\n if (typeof value !== 'undefined') {\n if (angular.isNumber(value)) {\n value = value + 'px';\n }\n return css.call(self, 'height', value);\n } else {\n return getWidthHeight(this[0], 'height', 'base');\n }\n },\n outerHeight(option) {\n return getWidthHeight(this[0], 'height', option ? 'outerfull' : 'outer');\n },\n outerWidth(option) {\n return getWidthHeight(this[0], 'width', option ? 'outerfull' : 'outer');\n },\n\n /*\n The offset setter method is not implemented\n */\n offset(value) {\n let docElem, win;\n let self = this;\n let box = {\n top: 0,\n left: 0\n };\n let elem = self[0];\n let doc = elem && elem.ownerDocument;\n\n if (arguments.length) {\n if (value === undefined) {\n return self;\n }\n // TODO: implement setter\n throw new Error('offset setter method is not implemented');\n }\n\n if (!doc) {\n return;\n }\n\n docElem = doc.documentElement;\n\n // TODO: Make sure it's not a disconnected DOM node\n\n if (elem.getBoundingClientRect != null) {\n box = elem.getBoundingClientRect();\n }\n\n win = doc.defaultView || doc.parentWindow;\n\n return {\n top: box.top + (win.pageYOffset || docElem.scrollTop) - (docElem.clientTop || 0),\n left: box.left + (win.pageXOffset || docElem.scrollLeft) - (docElem.clientLeft || 0)\n };\n },\n scrollTop(value) {\n return scrollTo(this, 'top', value);\n },\n scrollLeft(value) {\n return scrollTo(this, 'left', value);\n }\n }, (value, key) => {\n if (!element.prototype[key]) {\n return element.prototype[key] = value;\n }\n });\n }\n\n}\n","const hideClassToken = 'ng-ui-scroll-hide';\n\nexport default class ElementRoutines {\n\n static addCSSRules() {\n const selector = '.' + hideClassToken;\n const rules = 'display: none';\n const sheet = document.styleSheets[0];\n let index;\n try {\n index = sheet.cssRules.length;\n } catch (err) {\n index = 0;\n }\n if('insertRule' in sheet) {\n sheet.insertRule(selector + '{' + rules + '}', index);\n }\n else if('addRule' in sheet) {\n sheet.addRule(selector, rules, index);\n }\n }\n\n constructor($injector, $q) {\n this.$animate = ($injector.has && $injector.has('$animate')) ? $injector.get('$animate') : null;\n this.isAngularVersionLessThen1_3 = angular.version.major === 1 && angular.version.minor < 3;\n this.$q = $q;\n }\n\n hideElement(wrapper) {\n wrapper.element.addClass(hideClassToken);\n }\n\n showElement(wrapper) {\n wrapper.element.removeClass(hideClassToken);\n }\n\n insertElement(newElement, previousElement) {\n previousElement.after(newElement);\n return [];\n }\n\n removeElement(wrapper) {\n wrapper.element.remove();\n wrapper.scope.$destroy();\n return [];\n }\n\n insertElementAnimated(newElement, previousElement) {\n if (!this.$animate) {\n return this.insertElement(newElement, previousElement);\n }\n\n if (this.isAngularVersionLessThen1_3) {\n const deferred = this.$q.defer();\n // no need for parent - previous element is never null\n this.$animate.enter(newElement, null, previousElement, () => deferred.resolve());\n\n return [deferred.promise];\n }\n\n // no need for parent - previous element is never null\n return [this.$animate.enter(newElement, null, previousElement)];\n }\n\n removeElementAnimated(wrapper) {\n if (!this.$animate) {\n return this.removeElement(wrapper);\n }\n\n if (this.isAngularVersionLessThen1_3) {\n const deferred = this.$q.defer();\n this.$animate.leave(wrapper.element, () => {\n wrapper.scope.$destroy();\n return deferred.resolve();\n });\n\n return [deferred.promise];\n }\n\n return [(this.$animate.leave(wrapper.element)).then(() => wrapper.scope.$destroy())];\n }\n}","export default function ScrollBuffer(elementRoutines, bufferSize, startIndex, rowHeight) {\n const buffer = Object.create(Array.prototype);\n\n angular.extend(buffer, {\n size: bufferSize,\n\n reset(startIndex) {\n buffer.remove(0, buffer.length);\n buffer.eof = false;\n buffer.bof = false;\n buffer.first = startIndex;\n buffer.next = startIndex;\n buffer.minIndex = startIndex; // Calculated when data is effectively accessed\n buffer.maxIndex = startIndex;\n buffer.minIndexUser = null; // as set by the user (datasource)\n buffer.maxIndexUser = null;\n },\n \n // PHIL: set the new index to be displayed without resettng the sroll and the calculated min/max\n // Note that this actually make sense with a fixed rowHeight when the scroll value can be calculated\n // for a # of rows\n resetStartIndex: function resetStartIndex(startIndex) {\n buffer.remove(0, buffer.length);\n buffer.eof = buffer.eof && startIndex==buffer.maxIndex;\n buffer.bof = buffer.bof && startIndex==buffer.minIndex;\n buffer.first = startIndex;\n buffer.next = startIndex;\n },\n\n append(items) {\n items.forEach((item) => {\n ++buffer.next;\n buffer.insert('append', item);\n });\n buffer.maxIndex = buffer.eof ? buffer.next - 1 : Math.max(buffer.next - 1, buffer.maxIndex);\n },\n\n prepend(items) {\n items.reverse().forEach((item) => {\n --buffer.first;\n buffer.insert('prepend', item);\n });\n buffer.minIndex = buffer.bof ? buffer.minIndex = buffer.first : Math.min(buffer.first, buffer.minIndex);\n },\n\n /**\n * inserts wrapped element in the buffer\n * the first argument is either operation keyword (see below) or a number for operation 'insert'\n * for insert the number is the index for the buffer element the new one have to be inserted after\n * operations: 'append', 'prepend', 'insert', 'remove', 'update', 'none'\n */\n insert(operation, item, isTop) {\n const wrapper = {\n item: item\n };\n\n if (operation % 1 === 0) {// it is an insert\n wrapper.op = 'insert';\n buffer.splice(operation, 0, wrapper);\n if(isTop) {\n buffer.first--;\n }\n else {\n buffer.next++;\n }\n } else {\n wrapper.op = operation;\n switch (operation) {\n case 'append':\n buffer.push(wrapper);\n break;\n case 'prepend':\n buffer.unshift(wrapper);\n break;\n }\n }\n },\n\n // removes elements from buffer\n remove(arg1, arg2) {\n if (angular.isNumber(arg1)) {\n // removes items from arg1 (including) through arg2 (excluding)\n for (let i = arg1; i < arg2; i++) {\n elementRoutines.removeElement(buffer[i]);\n }\n return buffer.splice(arg1, arg2 - arg1);\n }\n // removes single item(wrapper) from the buffer\n buffer.splice(buffer.indexOf(arg1), 1);\n if(arg1._op === 'isTop' && buffer.first === this.getAbsMinIndex()) {\n this.incrementMinIndex();\n }\n else {\n this.decrementMaxIndex();\n }\n if(arg1._op === 'isTop') {\n buffer.first++;\n }\n else {\n buffer.next--;\n }\n if(!buffer.length) {\n buffer.first = buffer.minIndex%1 ? buffer.minIndex : startIndex;\n buffer.next = buffer.first;\n buffer.eof = buffer.eof && buffer.first==buffer.maxIndex;\n }\n\n return elementRoutines.removeElementAnimated(arg1);\n },\n\n incrementMinIndex() {\n if(buffer.minIndexUser !== null) {\n if(buffer.minIndex > buffer.minIndexUser) {\n buffer.minIndexUser++;\n return;\n }\n if(buffer.minIndex === buffer.minIndexUser) {\n buffer.minIndexUser++;\n }\n }\n buffer.minIndex++;\n },\n\n decrementMaxIndex() {\n if(buffer.maxIndexUser !== null && buffer.maxIndex <= buffer.maxIndexUser) {\n buffer.maxIndexUser--;\n }\n buffer.maxIndex--;\n },\n\n getAbsMinIndex() {\n if(buffer.minIndexUser !== null) {\n return Math.min(buffer.minIndexUser, buffer.minIndex);\n }\n return buffer.minIndex;\n },\n\n getAbsMaxIndex() {\n if(buffer.maxIndexUser !== null) {\n return Math.max(buffer.maxIndexUser, buffer.maxIndex);\n }\n return buffer.maxIndex;\n },\n\n effectiveHeight(elements) {\n if (!elements.length) {\n return 0;\n }\n let top = Number.MAX_VALUE;\n let bottom = Number.NEGATIVE_INFINITY;\n elements.forEach((wrapper) => {\n if (wrapper.element[0].offsetParent) {\n // element style is not display:none\n top = Math.min(top, wrapper.element.offset().top);\n bottom = Math.max(bottom, wrapper.element.offset().top + (rowHeight || wrapper.element.outerHeight(true)));\n }\n });\n return Math.max(0, bottom - top);\n },\n\n getItems() {\n return buffer.filter(item => item.op === 'none');\n },\n\n getFirstItem() {\n const list = buffer.getItems();\n if (!list.length) {\n return null;\n }\n return list[0].item;\n },\n\n getLastItem() {\n const list = buffer.getItems();\n if (!list.length) {\n return null;\n }\n return list[list.length - 1].item;\n }\n\n });\n\n buffer.reset(startIndex);\n\n return buffer;\n}\n","// Can't just extend the Array, due to Babel does not support built-in classes extending\n// This solution was taken from https://stackoverflow.com/questions/46897414/es6-class-extends-array-workaround-for-es5-babel-transpile\nclass CacheProto {\n add(item) {\n for (let i = this.length - 1; i >= 0; i--) {\n if (this[i].index === item.scope.$index) {\n this[i].height = item.element.outerHeight();\n return;\n }\n }\n this.push({\n index: item.scope.$index,\n height: item.element.outerHeight()\n });\n this.sort((a, b) => ((a.index < b.index) ? -1 : ((a.index > b.index) ? 1 : 0)));\n }\n\n remove(argument, _isTop) {\n const index = argument % 1 === 0 ? argument : argument.scope.$index;\n const isTop = argument % 1 === 0 ? _isTop : argument._op === 'isTop';\n for (let i = this.length - 1; i >= 0; i--) {\n if (this[i].index === index) {\n this.splice(i, 1);\n break;\n }\n }\n if(!isTop) {\n for (let i = this.length - 1; i >= 0; i--) {\n if (this[i].index > index) {\n this[i].index--;\n }\n }\n }\n }\n\n clear() {\n this.length = 0;\n }\n}\n\nfunction Cache() {\n const instance = [];\n instance.push.apply(instance, arguments);\n Object.setPrototypeOf(instance, Cache.prototype);\n return instance;\n}\nCache.prototype = Object.create(Array.prototype);\nObject.getOwnPropertyNames(CacheProto.prototype).forEach(methodName =>\n Cache.prototype[methodName] = CacheProto.prototype[methodName]\n);\n\nfunction generateElement(template) {\n if(template.nodeType !== Node.ELEMENT_NODE) {\n throw new Error('ui-scroll directive requires an Element node for templating the view');\n }\n let element;\n switch (template.tagName.toLowerCase()) {\n case 'dl':\n throw new Error(`ui-scroll directive does not support <${template.tagName}> as a repeating tag: ${template.outerHTML}`);\n case 'tr':\n let table = angular.element('
    ');\n element = table.find('tr');\n break;\n case 'li':\n element = angular.element('
  • ');\n break;\n default:\n element = angular.element('
    ');\n }\n return element;\n}\n\n//\n// Padding represents the dummy element added to both the top and the bottom of the scrolling container\n// It holds the element, as well as a cache for the items (rows) height. In case of a fixed rowHeight, the \n// cache is not used and thus is not created.\n//\nclass Padding {\n constructor(template,useCache) {\n this.element = generateElement(template);\n if(useCache) {\n this.cache = new Cache();\n }\n }\n\n height() {\n // When called with a parameter, this sets the height of the padding\n return this.element.height.apply(this.element, arguments);\n }\n}\n\nexport default Padding;","import Padding from './padding';\n\nexport default function Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding, rowHeight) {\n let topPadding = null;\n let bottomPadding = null;\n const viewport = viewportController && viewportController.viewport ? viewportController.viewport : angular.element(window);\n const container = viewportController && viewportController.container ? viewportController.container : undefined;\n const scope = viewportController && viewportController.scope ? viewportController.scope : $rootScope;\n\n viewport.css({\n 'overflow-anchor': 'none',\n 'overflow-y': 'auto',\n 'display': 'block'\n });\n\n function bufferPadding() {\n return viewport.outerHeight() * padding; // some extra space to initiate preload\n }\n\n // \n // Viewport measurements\n //\n // +----------------+ 0\n // | top |\n // | padding |\n // +----------------+ topDataPos() [=topPadding.height]\n // | not visible |\n // | items |\n // +----------------+ topVisiblePos() [=viewport.scrollTop]\n // | |\n // | visible |\n // | items |\n // | |\n // +----------------+ bottomVisiblePos() [=viewport.scrollTop+viewport.height]\n // | not visible |\n // | items |\n // +----------------+ bottomDataPos() [=scrollHeight-bottomPadding.height]\n // | bottom |\n // | padding |\n // +----------------+ scrollHeight \n //\n // bufferPadding is some extra space we have top & bottom to allow infinite scrolling\n // bufferPadding = viewport.outerHeight() * padding\n //\n // bottomVisiblePos() - topVisiblePos() == viewport.outerHeight()\n \n\n angular.extend(viewport, {\n getScope() {\n return scope;\n },\n\n createPaddingElements(template) {\n topPadding = new Padding(template,!rowHeight);\n bottomPadding = new Padding(template,!rowHeight);\n element.before(topPadding.element);\n element.after(bottomPadding.element);\n topPadding.height(0);\n bottomPadding.height(0);\n },\n\n applyContainerStyle() {\n if (!container) {\n return true;\n }\n if(container !== viewport) {\n viewport.css('height', window.getComputedStyle(container[0]).height);\n }\n return viewport.height() > 0;\n },\n\n bottomDataPos() {\n let scrollHeight = viewport[0].scrollHeight;\n scrollHeight = scrollHeight != null ? scrollHeight : viewport[0].document.documentElement.scrollHeight;\n return scrollHeight - bottomPadding.height();\n },\n\n topDataPos() {\n return topPadding.height();\n },\n\n bottomVisiblePos() {\n return viewport.scrollTop() + viewport.outerHeight();\n },\n\n topVisiblePos() {\n return viewport.scrollTop();\n },\n\n insertElement(e, sibling) {\n return elementRoutines.insertElement(e, sibling || topPadding.element);\n },\n\n insertElementAnimated(e, sibling) {\n return elementRoutines.insertElementAnimated(e, sibling || topPadding.element);\n },\n\n shouldLoadBottom() {\n return !buffer.eof && viewport.bottomDataPos() < viewport.bottomVisiblePos() + bufferPadding();\n },\n\n clipBottom() {\n // clip the invisible items off the bottom\n let overage = 0;\n let emptySpaceHeight = viewport.bottomDataPos() - viewport.bottomVisiblePos() - bufferPadding();\n if(rowHeight) {\n overage = Math.min(buffer.length,Math.floor(emptySpaceHeight/rowHeight));\n } else {\n let itemHeight = 0;\n let overageHeight = 0;\n\n for (let i = buffer.length - 1; i >= 0; i--) {\n itemHeight = buffer[i].element.outerHeight(true);\n if (overageHeight + itemHeight > emptySpaceHeight) {\n break;\n }\n bottomPadding.cache.add(buffer[i]);\n overageHeight += itemHeight;\n overage++;\n }\n }\n\n if (overage > 0) {\n buffer.eof = false;\n buffer.remove(buffer.length - overage, buffer.length);\n buffer.next -= overage;\n viewport.adjustPaddings();\n }\n },\n\n shouldLoadTop() {\n return !buffer.bof && (viewport.topDataPos() > viewport.topVisiblePos() - bufferPadding());\n },\n\n clipTop() {\n // clip the invisible items off the top\n let overage = 0;\n let overageHeight = 0;\n let emptySpaceHeight = viewport.topVisiblePos() - viewport.topDataPos() - bufferPadding();\n if(rowHeight) {\n overage = Math.min(buffer.length,Math.floor(emptySpaceHeight/rowHeight));\n overageHeight = overage * rowHeight;\n } else {\n let itemHeight = 0;\n\n for (let i = 0; i < buffer.length; i++) {\n itemHeight = buffer[i].element.outerHeight(true);\n if (overageHeight + itemHeight > emptySpaceHeight) {\n break;\n }\n topPadding.cache.add(buffer[i]);\n overageHeight += itemHeight;\n overage++;\n }\n }\n\n if (overage > 0) {\n // we need to adjust top padding element before items are removed from top\n // to avoid strange behaviour of scroll bar during remove top items when we are at the very bottom\n topPadding.height(topPadding.height() + overageHeight);\n buffer.bof = false;\n buffer.remove(0, overage);\n buffer.first += overage;\n }\n },\n\n // PHIL: remove all the entries in the buffer without changing the scrollbar, nor the scroll position\n // and update the padding accordingly\n // It is designed to work with non fixed rowHeight, although it will need more tests in this area...\n scrollTo(first) {\n if(rowHeight) {\n const min = buffer.getAbsMinIndex(); \n const max = buffer.getAbsMaxIndex();\n first = Math.min(Math.max(first, min),max);\n // Adjust the paddings before removing the elements to avoid touching the scroll top position\n topPadding.height((first-min)*rowHeight);\n bottomPadding.height(((max+1)-first)*rowHeight);\n buffer.resetStartIndex(first);\n } else {\n buffer.resetStartIndex(first);\n viewport.adjustPaddings();\n } \n },\n \n adjustPaddings() {\n if(rowHeight) {\n const min = buffer.getAbsMinIndex(); \n const max = buffer.getAbsMaxIndex();\n topPadding.height((buffer.first-min)*rowHeight);\n // PHIL: next points to the next possible item, while max is the index of the last one.\n // In order to make them compatible, we should add one to max\n // Also, it looks like buffer is not changing maxIndex when an element is inserted/appended\n // Not sure if this can have a consequence or not....\n bottomPadding.height(((max+1)-buffer.next)*rowHeight);\n return;\n }\n\n if (!buffer.length) {\n return;\n }\n\n // precise heights calculation based on items that are in buffer or that were in buffer once\n const visibleItemsHeight = buffer.reduce((summ, item) => summ + item.element.outerHeight(true), 0);\n let topPaddingHeight = 0, topCount = 0;\n topPadding.cache.forEach(item => {\n if(item.index < buffer.first) {\n topPaddingHeight += item.height;\n topCount++;\n }\n });\n \n let bottomPaddingHeight = 0, bottomCount = 0;\n bottomPadding.cache.forEach(item => {\n if(item.index >= buffer.next) {\n bottomPaddingHeight += item.height;\n bottomCount++;\n }\n });\n \n const totalHeight = visibleItemsHeight + topPaddingHeight + bottomPaddingHeight;\n const averageItemHeight = totalHeight / (topCount + bottomCount + buffer.length); \n\n // average heights calculation, items that have never been reached\n let adjustTopPadding = buffer.minIndexUser !== null && buffer.minIndex > buffer.minIndexUser;\n let adjustBottomPadding = buffer.maxIndexUser !== null && buffer.maxIndex < buffer.maxIndexUser;\n let topPaddingHeightAdd = adjustTopPadding ? (buffer.minIndex - buffer.minIndexUser) * averageItemHeight : 0;\n let bottomPaddingHeightAdd = adjustBottomPadding ? (buffer.maxIndexUser - buffer.maxIndex) * averageItemHeight : 0;\n\n // paddings combine adjustment\n topPadding.height(topPaddingHeight + topPaddingHeightAdd);\n bottomPadding.height(bottomPaddingHeight + bottomPaddingHeightAdd);\n },\n\n onAfterMinIndexSet(topPaddingHeightOld) {\n // additional scrollTop adjustment in case of datasource.minIndex external set\n if (buffer.minIndexUser !== null && buffer.minIndex > buffer.minIndexUser) {\n let diff = topPadding.height() - topPaddingHeightOld;\n viewport.scrollTop(viewport.scrollTop() + diff);\n while((diff -= viewport.scrollTop()) > 0) {\n bottomPadding.height(bottomPadding.height() + diff);\n viewport.scrollTop(viewport.scrollTop() + diff);\n }\n }\n },\n\n onAfterPrepend(updates) {\n if (!updates.prepended.length)\n return;\n const height = buffer.effectiveHeight(updates.prepended);\n const paddingHeight = topPadding.height() - height;\n if (paddingHeight >= 0) {\n topPadding.height(paddingHeight);\n }\n else {\n topPadding.height(0);\n viewport.scrollTop(viewport.scrollTop() - paddingHeight);\n }\n },\n\n resetTopPadding() {\n topPadding.height(0);\n if(topPadding.cache) {\n topPadding.cache.clear();\n }\n },\n\n resetBottomPadding() {\n bottomPadding.height(0);\n if(bottomPadding.cache) {\n bottomPadding.cache.clear();\n }\n },\n\n removeCacheItem(item, isTop) {\n if(topPadding.cache) {\n topPadding.cache.remove(item, isTop);\n }\n if(bottomPadding.cache) {\n bottomPadding.cache.remove(item, isTop);\n }\n },\n\n removeItem(item) {\n this.removeCacheItem(item);\n return buffer.remove(item);\n }\n });\n\n return viewport;\n}\n","class Adapter {\n\n constructor($scope, $parse, $attr, viewport, buffer, doAdjust, reload) {\n this.$parse = $parse;\n this.$attr = $attr;\n this.viewport = viewport;\n this.buffer = buffer;\n\n this.doAdjust = doAdjust;\n this.reload = reload;\n\n this.isLoading = false;\n this.disabled = false;\n\n const viewportScope = viewport.getScope();\n this.startScope = viewportScope.$parent ? viewportScope : $scope;\n\n this.publicContext = {};\n this.assignAdapter($attr.adapter);\n this.generatePublicContext();\n }\n\n assignAdapter(adapterAttr) {\n if (!adapterAttr || !(adapterAttr = adapterAttr.replace(/^\\s+|\\s+$/gm, ''))) {\n return;\n }\n let adapterOnScope;\n\n try {\n this.$parse(adapterAttr).assign(this.startScope, {});\n adapterOnScope = this.$parse(adapterAttr)(this.startScope);\n }\n catch (error) {\n error.message = `Angular ui-scroll Adapter assignment exception.\\n` +\n `Can't parse \"${adapterAttr}\" expression.\\n` +\n error.message;\n throw error;\n }\n\n angular.extend(adapterOnScope, this.publicContext);\n this.publicContext = adapterOnScope;\n }\n\n generatePublicContext() {\n // these methods will be accessible out of ui-scroll via user defined adapter\n const publicMethods = ['reload', 'applyUpdates', 'append', 'prepend', 'isBOF', 'isEOF', 'isEmpty'];\n for (let i = publicMethods.length - 1; i >= 0; i--) {\n this.publicContext[publicMethods[i]] = this[publicMethods[i]].bind(this);\n }\n\n // these read-only props will be accessible out of ui-scroll via user defined adapter\n const publicProps = ['isLoading', 'topVisible', 'topVisibleElement', 'topVisibleScope', 'bottomVisible', 'bottomVisibleElement', 'bottomVisibleScope'];\n for (let i = publicProps.length - 1; i >= 0; i--) {\n let property, attr = this.$attr[publicProps[i]];\n Object.defineProperty(this, publicProps[i], {\n get: () => property,\n set: (value) => {\n property = value;\n this.publicContext[publicProps[i]] = value;\n if (attr) {\n this.$parse(attr).assign(this.startScope, value);\n }\n }\n });\n }\n\n // read-only immediately calculated public properties\n const publicPropsImmediate = ['bufferFirst', 'bufferLast', 'bufferLength'];\n for (let i = publicPropsImmediate.length - 1; i >= 0; i--) {\n Object.defineProperty(this.publicContext, publicPropsImmediate[i], {\n get: () => this[publicPropsImmediate[i]]\n });\n }\n\n // non-read-only public property\n Object.defineProperty(this.publicContext, 'disabled', {\n get: () => this.disabled,\n set: (value) => (!(this.disabled = value)) ? this.doAdjust() : null\n });\n }\n\n loading(value) {\n this.isLoading = value;\n }\n\n isBOF() {\n return this.buffer.bof;\n }\n\n isEOF() {\n return this.buffer.eof;\n }\n\n isEmpty() {\n return !this.buffer.length;\n }\n\n get bufferLength() {\n return this.buffer.getItems().length;\n }\n\n get bufferFirst() {\n return this.buffer.getFirstItem();\n }\n\n get bufferLast() {\n return this.buffer.getLastItem();\n }\n\n append(newItems) {\n this.buffer.append(newItems);\n this.doAdjust();\n this.viewport.clipTop();\n this.viewport.clipBottom();\n }\n\n prepend(newItems) {\n this.buffer.prepend(newItems);\n this.doAdjust();\n this.viewport.clipTop();\n this.viewport.clipBottom();\n }\n\n applyUpdates(arg1, arg2, arg3) {\n if (typeof arg1 === 'function') {\n this.applyUpdatesFunc(arg1, arg2);\n if(arg2 && arg2.noAdjust) return;\n } else {\n this.applyUpdatesIndex(arg1, arg2, arg3);\n if(arg3 && arg3.noAdjust) return;\n }\n this.doAdjust();\n }\n\n applyUpdatesFunc(cb, options) {\n this.buffer.slice(0).forEach((wrapper) => {\n // we need to do it on the buffer clone, because buffer content\n // may change as we iterate through\n this.applyUpdate(wrapper, cb(wrapper.item, wrapper.scope, wrapper.element), options);\n });\n }\n\n applyUpdatesIndex(index, newItems, options = {}) {\n if (index % 1 !== 0) {\n throw new Error('applyUpdates - ' + index + ' is not a valid index (should be an integer)');\n }\n const _index = index - this.buffer.first;\n\n // apply updates only within buffer\n if (_index >= 0 && _index < this.buffer.length) {\n this.applyUpdate(this.buffer[_index], newItems, options);\n }\n // out-of-buffer case: deletion may affect Paddings\n else if(index >= this.buffer.getAbsMinIndex() && index <= this.buffer.getAbsMaxIndex()) {\n if(angular.isArray(newItems) && !newItems.length) {\n this.viewport.removeCacheItem(index, !options.immutableTop && index === this.buffer.minIndex);\n if (!options.immutableTop && index === this.buffer.getAbsMinIndex()) {\n this.buffer.incrementMinIndex();\n }\n else {\n this.buffer.decrementMaxIndex();\n }\n }\n }\n }\n\n applyUpdate(wrapper, newItems, options = {}) {\n if (!angular.isArray(newItems)) {\n return;\n }\n let position = this.buffer.indexOf(wrapper);\n if (!newItems.reverse().some(newItem => newItem === wrapper.item)) {\n wrapper.op = 'remove';\n if (!options.immutableTop && position === 0 && !newItems.length) {\n wrapper._op = 'isTop'; // to catch \"first\" edge case on remove\n }\n }\n newItems.forEach((newItem) => {\n if (newItem === wrapper.item) {\n position--;\n } else {\n // 3 parameter (isTop) is to catch \"first\" edge case on insert\n this.buffer.insert(position + 1, newItem, !options.immutableTop && position === -1);\n }\n });\n }\n\n calculateProperties() {\n let rowTop = null, topHeight = 0;\n let topDone = false, bottomDone = false;\n const length = this.buffer.length;\n\n for (let i = 0; i < length; i++) {\n const item = this.buffer[i];\n const itemTop = item.element.offset().top;\n\n if (rowTop !== itemTop) { // a new row condition\n const itemHeight = item.element.outerHeight(true);\n const top = this.viewport.topDataPos() + topHeight + itemHeight;\n\n if (!topDone && top > this.viewport.topVisiblePos()) {\n topDone = true;\n this['topVisible'] = item.item;\n this['topVisibleElement'] = item.element;\n this['topVisibleScope'] = item.scope;\n }\n if (!bottomDone && (top >= this.viewport.bottomVisiblePos() || (i === length - 1 && this.isEOF()))) {\n bottomDone = true;\n this['bottomVisible'] = item.item;\n this['bottomVisibleElement'] = item.element;\n this['bottomVisibleScope'] = item.scope;\n }\n topHeight += itemHeight;\n }\n rowTop = itemTop;\n\n if (topDone && bottomDone) {\n break;\n }\n }\n }\n\n}\n\nexport default Adapter;\n","import JQLiteExtras from './modules/jqLiteExtras';\nimport ElementRoutines from './modules/elementRoutines.js';\nimport ScrollBuffer from './modules/buffer.js';\nimport Viewport from './modules/viewport.js';\nimport Adapter from './modules/adapter.js';\n\nangular.module('ui.scroll', [])\n\n .constant('JQLiteExtras', JQLiteExtras)\n .run(['JQLiteExtras', (JQLiteExtras) => {\n const elt = angular.element;\n !(window.jQuery && elt.fn && elt.fn.jquery) ? (new JQLiteExtras()).registerFor(elt) : null;\n ElementRoutines.addCSSRules();\n }])\n\n .directive('uiScrollViewport', function () {\n return {\n restrict: 'A',\n controller: [\n '$scope',\n '$element',\n function (scope, element) {\n this.container = element;\n this.viewport = element;\n this.scope = scope;\n\n angular.forEach(element.children(), child => {\n if (child.tagName.toLowerCase() === 'tbody') {\n this.viewport = angular.element(child);\n }\n });\n\n return this;\n }\n ]\n };\n })\n\n .directive('uiScroll', [\n '$log',\n '$injector',\n '$rootScope',\n '$timeout',\n '$interval',\n '$q',\n '$parse',\n function (console, $injector, $rootScope, $timeout, $interval, $q, $parse) {\n\n return {\n require: ['?^uiScrollViewport'],\n restrict: 'A',\n transclude: 'element',\n priority: 1000,\n terminal: true,\n link: link\n };\n\n function link($scope, element, $attr, controllers, linker) {\n const match = $attr.uiScroll.match(/^\\s*(\\w+)\\s+in\\s+([(\\w|\\$)\\.]+)\\s*$/);\n if (!match) {\n throw new Error('Expected uiScroll in form of \\'_item_ in _datasource_\\' but got \\'' + $attr.uiScroll + '\\'');\n }\n\n function parseNumber(value, defaultValue, isFloat) {\n if (!isFloat) {\n value = value === null ? defaultValue : Math.floor(value);\n }\n return isNaN(value) ? defaultValue : value;\n }\n\n function parseNumericAttr(value, defaultValue, isFloat) {\n const result = $parse(value)($scope);\n return parseNumber(result, defaultValue, isFloat);\n }\n\n const BUFFER_MIN = 3; // Minimum size of the data source request\n const BUFFER_DEFAULT = 10; // Default datasource request size\n const PADDING_MIN = 0.3; // Mininum # of rows in the padding area\n const PADDING_DEFAULT = 0.5; // Default # of rows in the padding area\n const START_INDEX_DEFAULT = 1; // Default start index when requestng the first data block\n const MAX_VIEWPORT_DELAY = 500; // Max time wait (ms) to get the viewport with an height>0\n const VIEWPORT_POLLING_INTERVAL = 50; // Interval used to check the initial viewport height\n\n let datasource = null;\n const itemName = match[1]; // Name of the index variable to publish\n const datasourceName = match[2]; // Name of the datasource to request the rows from\n const viewportController = controllers[0]; // ViewportController, as specified in the require option (http://websystique.com/angularjs/angularjs-custom-directives-controllers-require-option-guide/)\n const bufferSize = Math.max(BUFFER_MIN, parseNumericAttr($attr.bufferSize, BUFFER_DEFAULT)); \n const padding = Math.max(PADDING_MIN, parseNumericAttr($attr.padding, PADDING_DEFAULT, true));\n let startIndex = parseNumericAttr($attr.startIndex, START_INDEX_DEFAULT);\n\n // PHIL: Provide a fixed row height\n // \n const rowHeight = parseNumericAttr($attr.rowHeight, null, false);\n\n // PHIL: Read the visibility watch option, true by default\n const allowVisibilityWatch = $attr.allowVisibilityWatch!=='false';\n\n // Revision IDs\n // \n let ridActual = 0; // current data revision id\n let pending = [];\n\n const elementRoutines = new ElementRoutines($injector, $q);\n const buffer = new ScrollBuffer(elementRoutines, bufferSize, startIndex, rowHeight);\n const viewport = new Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding, rowHeight);\n const adapter = new Adapter($scope, $parse, $attr, viewport, buffer, doAdjust, reload);\n\n if (viewportController) {\n viewportController.adapter = adapter;\n }\n\n // Currently, we only debounce the scroll events when a fixed rowHeight is provided\n // as the unit tests will have to be adapted to support this feature\n let scPreviousScrollTop=-1;\n\n const isDatasourceValid = () =>\n Object.prototype.toString.call(datasource) === '[object Object]' && typeof datasource.get === 'function';\n\n datasource = $parse(datasourceName)($scope); // try to get datasource on scope\n if (!isDatasourceValid()) {\n datasource = $injector.get(datasourceName); // try to inject datasource as service\n if (!isDatasourceValid()) {\n throw new Error(datasourceName + ' is not a valid datasource');\n }\n }\n\n let onRenderHandlers = [];\n function onRenderHandlersRunner() {\n onRenderHandlers.forEach(handler => handler.run());\n onRenderHandlers = [];\n }\n function persistDatasourceIndex(datasource, propName) {\n let getter;\n // need to postpone min/maxIndexUser processing if the view is empty\n if(angular.isNumber(datasource[propName])) {\n getter = datasource[propName];\n if(angular.isNumber(getter)) {\n onRenderHandlers = onRenderHandlers.filter(handler => handler.id !== propName);\n onRenderHandlers.push({\n id: propName,\n run: () => datasource[propName] = getter\n });\n }\n }\n }\n\n function defineDatasourceIndex(datasource, propName, propUserName) {\n const descriptor = Object.getOwnPropertyDescriptor(datasource, propName);\n if (descriptor && (descriptor.set || descriptor.get)) {\n return;\n }\n let getter;\n persistDatasourceIndex(datasource, propName);\n Object.defineProperty(datasource, propName, {\n set: (value) => {\n getter = value;\n if(pending.length && !buffer.length) {\n persistDatasourceIndex(datasource, propName);\n return;\n }\n buffer[propUserName] = value;\n const topPaddingHeightOld = viewport.topDataPos();\n viewport.adjustPaddings();\n if (propName === 'minIndex') {\n viewport.onAfterMinIndexSet(topPaddingHeightOld);\n }\n },\n get: () => getter\n });\n }\n\n defineDatasourceIndex(datasource, 'minIndex', 'minIndexUser');\n defineDatasourceIndex(datasource, 'maxIndex', 'maxIndexUser');\n\n const fetchNext = (datasource.get.length !== 2) ?\n (success) => datasource.get(buffer.next, bufferSize, success) :\n (success) => {\n datasource.get({\n index: buffer.next,\n append: buffer.length ? buffer[buffer.length - 1].item : void 0,\n count: bufferSize\n }, success);\n };\n\n const fetchPrevious = (datasource.get.length !== 2) ?\n (success) => datasource.get(buffer.first - bufferSize, bufferSize, success) :\n (success) => {\n datasource.get({\n index: buffer.first - bufferSize,\n prepend: buffer.length ? buffer[0].item : void 0,\n count: bufferSize\n }, success);\n };\n\n const initialize = () => {\n let tryCount = 0;\n if(!viewport.applyContainerStyle()) {\n const timer = $interval(() => {\n tryCount++;\n if(viewport.applyContainerStyle()) {\n $interval.cancel(timer);\n doAdjust();\n }\n if(tryCount * VIEWPORT_POLLING_INTERVAL >= MAX_VIEWPORT_DELAY) {\n $interval.cancel(timer);\n throw Error(`ui-scroll directive requires a viewport with non-zero height in ${MAX_VIEWPORT_DELAY}ms`);\n }\n }, VIEWPORT_POLLING_INTERVAL);\n }\n else {\n doAdjust();\n }\n };\n\n /**\n * Build padding elements\n *\n * Calling linker is the only way I found to get access to the tag name of the template\n * to prevent the directive scope from pollution a new scope is created and destroyed\n * right after the builder creation is completed\n */\n linker((clone, scope) => {\n viewport.createPaddingElements(clone[0]);\n // we do not include the clone in the DOM. It means that the nested directives will not\n // be able to reach the parent directives, but in this case it is intentional because we\n // created the clone to access the template tag name\n scope.$destroy();\n clone.remove();\n });\n\n $scope.$on('$destroy', () => {\n unbindEvents();\n viewport.unbind('mousewheel', wheelHandler);\n });\n\n viewport.bind('mousewheel', wheelHandler);\n\n initialize();\n\n /* Private function definitions */\n\n function isInvalid(rid) {\n return (rid && rid !== ridActual) || $scope.$$destroyed;\n }\n\n function bindEvents() {\n viewport.bind('resize', resizeAndScrollHandler);\n viewport.bind('scroll', resizeAndScrollHandler);\n // If a scroll event happened while the handler was not bounded, emit the scroll\n if(isPendingScroll()) {\n // Do it immediately\n _resizeAndScrollHandler();\n }\n }\n\n function unbindEvents() {\n viewport.unbind('resize', resizeAndScrollHandler);\n viewport.unbind('scroll', resizeAndScrollHandler);\n }\n\n function reload() {\n unbindEvents();\n viewport.resetTopPadding();\n viewport.resetBottomPadding();\n if (arguments.length) {\n startIndex = parseNumber(arguments[0], START_INDEX_DEFAULT, false);\n }\n buffer.reset(startIndex);\n scPreviousScrollTop = -1; // Avoid isScrollPending() to be true\n persistDatasourceIndex(datasource, 'minIndex');\n persistDatasourceIndex(datasource, 'maxIndex');\n doAdjust();\n }\n\n function scrollTo(first) {\n unbindEvents();\n viewport.scrollTo(first);\n doAdjust();\n }\n\n function isElementVisible(wrapper) {\n return (rowHeight || wrapper.element.height()) && wrapper.element[0].offsetParent;\n }\n\n function visibilityWatcher(wrapper) {\n if (isElementVisible(wrapper)) {\n buffer.forEach((item) => {\n if (typeof item.unregisterVisibilityWatcher === 'function') {\n item.unregisterVisibilityWatcher();\n delete item.unregisterVisibilityWatcher;\n }\n });\n if (!pending.length) {\n $timeout(() => doAdjust());\n }\n }\n }\n\n function insertWrapperContent(wrapper, insertAfter) {\n createElement(wrapper, insertAfter, viewport.insertElement);\n if (allowVisibilityWatch && !isElementVisible(wrapper)) {\n wrapper.unregisterVisibilityWatcher = wrapper.scope.$watch(() => visibilityWatcher(wrapper));\n }\n if (allowVisibilityWatch) {\n elementRoutines.hideElement(wrapper); // hide inserted elements before data binding\n }\n }\n\n function createElement(wrapper, insertAfter, insertElement) {\n let promises = null;\n const sibling = (insertAfter > 0) ? buffer[insertAfter - 1].element : undefined;\n linker((clone, scope) => {\n promises = insertElement(clone, sibling);\n wrapper.element = clone;\n wrapper.scope = scope;\n scope[itemName] = wrapper.item;\n });\n // ui-scroll-grid apply\n if (adapter.transform) {\n const tdInitializer = wrapper.scope.uiScrollTdInitializer;\n if (tdInitializer && tdInitializer.linking) {\n adapter.transform(wrapper.scope, wrapper.element);\n } else {\n wrapper.scope.uiScrollTdInitializer = {\n onLink: () => adapter.transform(wrapper.scope, wrapper.element),\n scope: wrapper.scope\n };\n }\n }\n return promises;\n }\n\n function updateDOM() {\n let promises = [];\n const toBePrepended = [];\n const toBeRemoved = [];\n const inserted = [];\n\n buffer.forEach((wrapper, i) => {\n switch (wrapper.op) {\n case 'prepend':\n toBePrepended.unshift(wrapper);\n break;\n case 'append':\n insertWrapperContent(wrapper, i);\n wrapper.op = 'none';\n inserted.push(wrapper);\n break;\n case 'insert':\n promises = promises.concat(createElement(wrapper, i, viewport.insertElementAnimated));\n wrapper.op = 'none';\n inserted.push(wrapper);\n break;\n case 'remove':\n toBeRemoved.push(wrapper);\n }\n });\n\n toBeRemoved.forEach((wrapper) => promises = promises.concat(viewport.removeItem(wrapper)));\n\n if (toBePrepended.length)\n toBePrepended.forEach((wrapper) => {\n insertWrapperContent(wrapper);\n wrapper.op = 'none';\n });\n\n buffer.forEach((item, i) => item.scope.$index = buffer.first + i);\n\n return {\n prepended: toBePrepended,\n removed: toBeRemoved,\n inserted: inserted,\n animated: promises\n };\n\n }\n\n // Adjust the viewport paddings\n // \n function updatePaddings(rid, updates) {\n // schedule another doAdjust after animation completion\n if (updates.animated.length) {\n $q.all(updates.animated).then(() => {\n viewport.adjustPaddings();\n doAdjust(rid);\n });\n } else {\n viewport.adjustPaddings();\n }\n }\n\n function enqueueFetch(rid, updates) {\n // If there is a scroll pending, we don't enqueue the fetch as the scroll might be an absolute scroll\n // So we don't need to load top or bottom\n // This happens when there is a scroll frenzi, and the $digest is slow enough, so it stacks the calls without\n // giving a chance to the scroll event to be emitted and processed.\n // We also do that if it leads to an absolute scroll\n if(isPendingScroll() && calculateAbsoluteScroll()!==undefined) {\n // Looks like the event is swallowed on some browsers (FF) on some scroll configuration\n resizeAndScrollHandler();\n return;\n }\n\n if (viewport.shouldLoadBottom()) {\n if (!updates || buffer.effectiveHeight(updates.inserted) > 0) {\n // this means that at least one item appended in the last batch has height > 0\n if (pending.push(true) === 1) {\n adapter.loading(true);\n fetch(rid);\n }\n }\n } else if (viewport.shouldLoadTop()) {\n if ((!updates || buffer.effectiveHeight(updates.prepended) > 0) || pending[0]) {\n // this means that at least one item appended in the last batch has height > 0\n // pending[0] = true means that previous fetch was appending. We need to force at least one prepend\n // BTW there will always be at least 1 element in the pending array because bottom is fetched first\n if (pending.push(false) === 1) {\n adapter.loading(true);\n fetch(rid);\n }\n }\n }\n }\n\n function processUpdates() {\n const updates = updateDOM();\n\n // We need the item bindings to be processed before we can do adjustments\n // If there are no changes and the row-height is static, then ignore it!\n const changes = updates.animated.length+updates.inserted.length+updates.prepended.length+updates.removed.length;\n if(changes || !rowHeight) {\n !$scope.$$phase && !$rootScope.$$phase && $scope.$digest();\n }\n\n if (allowVisibilityWatch) {\n updates.inserted.forEach(w => elementRoutines.showElement(w));\n updates.prepended.forEach(w => elementRoutines.showElement(w));\n }\n\n return updates;\n }\n\n function doAdjust(rid) {\n if (!rid) { // dismiss pending requests\n pending = [];\n rid = ++ridActual;\n }\n\n const updates = processUpdates();\n\n if (isInvalid(rid)) {\n return;\n }\n\n updatePaddings(rid, updates);\n enqueueFetch(rid);\n\n if (!pending.length) {\n adapter.calculateProperties();\n }\n }\n\n function doAdjustAfterFetch(rid) {\n const updates = processUpdates();\n\n viewport.onAfterPrepend(updates);\n\n if (isInvalid(rid)) {\n return;\n }\n\n updatePaddings(rid, updates);\n onRenderHandlersRunner();\n enqueueFetch(rid, updates);\n pending.shift();\n\n if (pending.length)\n fetch(rid);\n else {\n adapter.loading(false);\n bindEvents();\n adapter.calculateProperties();\n }\n }\n\n function fetch(rid) {\n if (pending[0]) {// scrolling down\n if (buffer.length && !viewport.shouldLoadBottom()) {\n doAdjustAfterFetch(rid);\n } else {\n fetchNext((result) => {\n if (isInvalid(rid)) {\n return;\n }\n\n if (result.length < bufferSize) {\n buffer.eof = true;\n }\n\n if (result.length > 0) {\n viewport.clipTop();\n buffer.append(result);\n }\n\n doAdjustAfterFetch(rid);\n });\n }\n } else { // scrolling up\n if (buffer.length && !viewport.shouldLoadTop()) {\n doAdjustAfterFetch(rid);\n } else {\n fetchPrevious((result) => {\n if (isInvalid(rid)) {\n return;\n }\n\n if (result.length < bufferSize) {\n buffer.bof = true;\n // log 'bof is reached'\n }\n\n if (result.length > 0) {\n if (buffer.length) {\n viewport.clipBottom();\n }\n buffer.prepend(result);\n }\n\n doAdjustAfterFetch(rid);\n });\n }\n }\n }\n\n function isPendingScroll() {\n if(rowHeight) {\n // Maybe the scroll changed but the event has *not* yet being dispatched\n // because of the $digest running and taking to long\n var sc = viewport.scrollTop();\n if(sc!=scPreviousScrollTop && scPreviousScrollTop>=0) {\n return true;\n }\n }\n return false;\n }\n\n // Deboucing the scroll events avois intermediate $digest when scrolling fast\n let scTimer;\n function resizeAndScrollHandler() {\n if (rowHeight) {\n if (scTimer) clearTimeout(scTimer);\n scTimer = setTimeout(_resizeAndScrollHandler, 50);\n } else {\n _resizeAndScrollHandler();\n }\n }\n\n function _resizeAndScrollHandler() {\n if (!$rootScope.$$phase && !adapter.isLoading && !adapter.disabled) {\n // Absolute positioning currently only works when a fixed rowHeight is provided\n // We might isolate the averegaRowHeight calculation in the viewport to provide an estimate\n // and provide a reasonable behavior with variable height as well\n if(rowHeight) {\n const newFirst = calculateAbsoluteScroll();\n if(newFirst!==undefined) {\n scrollTo(newFirst);\n return;\n }\n }\n\n enqueueFetch(ridActual);\n\n if (pending.length) {\n unbindEvents();\n } else {\n adapter.calculateProperties();\n if(!rowHeight) {\n // The digest is forced to calculate the height, which is not necessary when the height is knowm\n !$scope.$$phase && $scope.$digest();\n }\n }\n }\n }\n\n function calculateAbsoluteScroll() {\n if(rowHeight) {\n scPreviousScrollTop = viewport.scrollTop();\n let newFirst = Math.floor(viewport.scrollTop() / rowHeight) + buffer.getAbsMinIndex();\n newFirst = Math.max(buffer.getAbsMinIndex(), Math.min(buffer.getAbsMaxIndex(),newFirst)); // Bound the scroll\n if (newFirstbuffer.next+bufferSize) {\n return newFirst;\n } \n }\n return undefined;\n }\n\n function wheelHandler(event) {\n if (!adapter.disabled) {\n const scrollTop = viewport[0].scrollTop;\n const yMax = viewport[0].scrollHeight - viewport[0].clientHeight;\n\n if ((scrollTop === 0 && !buffer.bof) || (scrollTop === yMax && !buffer.eof)) {\n event.preventDefault();\n }\n }\n }\n }\n\n }\n ]);\n"],"sourceRoot":""} \ No newline at end of file diff --git a/dist/ui-scroll.min.js b/dist/ui-scroll.min.js index 68eb950c..483f5356 100644 --- a/dist/ui-scroll.min.js +++ b/dist/ui-scroll.min.js @@ -1,2 +1,2 @@ -!function(n){var r={};function i(e){if(r[e])return r[e].exports;var t=r[e]={i:e,l:!1,exports:{}};return n[e].call(t.exports,t,t.exports,i),t.l=!0,t.exports}i.m=n,i.c=r,i.d=function(e,t,n){i.o(e,t)||Object.defineProperty(e,t,{enumerable:!0,get:n})},i.r=function(e){"undefined"!=typeof Symbol&&Symbol.toStringTag&&Object.defineProperty(e,Symbol.toStringTag,{value:"Module"}),Object.defineProperty(e,"__esModule",{value:!0})},i.t=function(t,e){if(1&e&&(t=i(t)),8&e)return t;if(4&e&&"object"==typeof t&&t&&t.__esModule)return t;var n=Object.create(null);if(i.r(n),Object.defineProperty(n,"default",{enumerable:!0,value:t}),2&e&&"string"!=typeof t)for(var r in t)i.d(n,r,function(e){return t[e]}.bind(null,r));return n},i.n=function(e){var t=e&&e.__esModule?function(){return e.default}:function(){return e};return i.d(t,"a",t),t},i.o=function(e,t){return Object.prototype.hasOwnProperty.call(e,t)},i.p="",i(i.s=1)}([,function(e,t,n){"use strict";function g(e,t){return function(e){if(Array.isArray(e))return e}(e)||function(e,t){var n=[],r=!0,i=!1,o=void 0;try{for(var a,u=e[Symbol.iterator]();!(r=(a=u.next()).done)&&(n.push(a.value),!t||n.length!==t);r=!0);}catch(e){i=!0,o=e}finally{try{r||null==u.return||u.return()}finally{if(i)throw o}}return n}(e,t)||function(){throw new TypeError("Invalid attempt to destructure non-iterable instance")}()}function i(e,t){for(var n=0;no.minIndexUser)return void o.minIndexUser++;o.minIndex===o.minIndexUser&&o.minIndexUser++}o.minIndex++},decrementMaxIndex:function(){null!==o.maxIndexUser&&o.maxIndex<=o.maxIndexUser&&o.maxIndexUser--,o.maxIndex--},getAbsMinIndex:function(){return null!==o.minIndexUser?Math.min(o.minIndexUser,o.minIndex):o.minIndex},getAbsMaxIndex:function(){return null!==o.maxIndexUser?Math.max(o.maxIndexUser,o.maxIndex):o.maxIndex},effectiveHeight:function(e){if(!e.length)return 0;var t=Number.MAX_VALUE,n=Number.NEGATIVE_INFINITY;return e.forEach(function(e){e.element[0].offsetParent&&(t=Math.min(t,e.element.offset().top),n=Math.max(n,e.element.offset().top+(i||e.element.outerHeight(!0))))}),Math.max(0,n-t)},getItems:function(){return o.filter(function(e){return"none"===e.op})},getFirstItem:function(){var e=o.getItems();return e.length?e[0].item:null},getLastItem:function(){var e=o.getItems();return e.length?e[e.length-1].item:null}}),o.reset(t),o}function s(e,t){if(!(e instanceof t))throw new TypeError("Cannot call a class as a function")}function l(e,t){for(var n=0;nt.index?1:0})}},{key:"remove",value:function(e,t){for(var n=e%1==0?e:e.scope.$index,r=e%1==0?t:"isTop"===e._op,i=this.length-1;0<=i;i--)if(this[i].index===n){this.splice(i,1);break}if(!r)for(var o=this.length-1;0<=o;o--)this[o].index>n&&this[o].index--}},{key:"clear",value:function(){this.length=0}}]),e}();function d(){var e=[];return e.push.apply(e,arguments),Object.setPrototypeOf(e,d.prototype),e}d.prototype=Object.create(Array.prototype),Object.getOwnPropertyNames(f.prototype).forEach(function(e){return d.prototype[e]=f.prototype[e]});var v=function(){function n(e,t){s(this,n),this.element=function(e){if(e.nodeType!==Node.ELEMENT_NODE)throw new Error("ui-scroll directive requires an Element node for templating the view");var t;switch(e.tagName.toLowerCase()){case"dl":throw new Error("ui-scroll directive does not support <".concat(e.tagName,"> as a repeating tag: ").concat(e.outerHTML));case"tr":t=angular.element("
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<= ref ? j <= ref : j >= ref; i = 1 <= ref ? ++j : --j) {\n if (children[i] === elem) {\n angular.element(children[i - 1]).after(newElem);\n return;\n }\n }\n throw new Error('invalid DOM structure ' + elem.outerHTML);\n }\n },\n height (value){\n var self;\n self = this;\n if (typeof value !== 'undefined') {\n if (angular.isNumber(value)) {\n value = value + 'px';\n }\n return css.call(self, 'height', value);\n } else {\n return getWidthHeight(this[0], 'height', 'base');\n }\n },\n outerHeight(option) {\n return getWidthHeight(this[0], 'height', option ? 'outerfull' : 'outer');\n },\n outerWidth(option) {\n return getWidthHeight(this[0], 'width', option ? 'outerfull' : 'outer');\n },\n\n /*\n The offset setter method is not implemented\n */\n offset(value) {\n let docElem, win;\n let self = this;\n let box = {\n top: 0,\n left: 0\n };\n let elem = self[0];\n let doc = elem && elem.ownerDocument;\n\n if (arguments.length) {\n if (value === undefined) {\n return self;\n }\n // TODO: implement setter\n throw new Error('offset setter method is not implemented');\n }\n\n if (!doc) {\n return;\n }\n\n docElem = doc.documentElement;\n\n // TODO: Make sure it's not a disconnected DOM node\n\n if (elem.getBoundingClientRect != null) {\n box = elem.getBoundingClientRect();\n }\n\n win = doc.defaultView || doc.parentWindow;\n\n return {\n top: box.top + (win.pageYOffset || docElem.scrollTop) - (docElem.clientTop || 0),\n left: box.left + (win.pageXOffset || docElem.scrollLeft) - (docElem.clientLeft || 0)\n };\n },\n scrollTop(value) {\n return scrollTo(this, 'top', value);\n },\n scrollLeft(value) {\n return scrollTo(this, 'left', value);\n }\n }, (value, key) => {\n if (!element.prototype[key]) {\n return element.prototype[key] = value;\n }\n });\n }\n\n}\n","const hideClassToken = 'ng-ui-scroll-hide';\n\nexport default class ElementRoutines {\n\n static addCSSRules() {\n const selector = '.' + hideClassToken;\n const rules = 'display: none';\n const sheet = document.styleSheets[0];\n let index;\n try {\n index = sheet.cssRules.length;\n } catch (err) {\n index = 0;\n }\n if('insertRule' in sheet) {\n sheet.insertRule(selector + '{' + rules + '}', index);\n }\n else if('addRule' in sheet) {\n sheet.addRule(selector, rules, index);\n }\n }\n\n constructor($injector, $q) {\n this.$animate = ($injector.has && $injector.has('$animate')) ? $injector.get('$animate') : null;\n this.isAngularVersionLessThen1_3 = angular.version.major === 1 && angular.version.minor < 3;\n this.$q = $q;\n }\n\n hideElement(wrapper) {\n wrapper.element.addClass(hideClassToken);\n }\n\n showElement(wrapper) {\n wrapper.element.removeClass(hideClassToken);\n }\n\n insertElement(newElement, previousElement) {\n previousElement.after(newElement);\n return [];\n }\n\n removeElement(wrapper) {\n wrapper.element.remove();\n wrapper.scope.$destroy();\n return [];\n }\n\n insertElementAnimated(newElement, previousElement) {\n if (!this.$animate) {\n return this.insertElement(newElement, previousElement);\n }\n\n if (this.isAngularVersionLessThen1_3) {\n const deferred = this.$q.defer();\n // no need for parent - previous element is never null\n this.$animate.enter(newElement, null, previousElement, () => deferred.resolve());\n\n return [deferred.promise];\n }\n\n // no need for parent - previous element is never null\n return [this.$animate.enter(newElement, null, previousElement)];\n }\n\n removeElementAnimated(wrapper) {\n if (!this.$animate) {\n return this.removeElement(wrapper);\n }\n\n if (this.isAngularVersionLessThen1_3) {\n const deferred = this.$q.defer();\n this.$animate.leave(wrapper.element, () => {\n wrapper.scope.$destroy();\n return deferred.resolve();\n });\n\n return [deferred.promise];\n }\n\n return [(this.$animate.leave(wrapper.element)).then(() => wrapper.scope.$destroy())];\n }\n}","export default function ScrollBuffer(elementRoutines, bufferSize, startIndex, rowHeight) {\n const buffer = Object.create(Array.prototype);\n\n angular.extend(buffer, {\n size: bufferSize,\n\n reset(startIndex) {\n buffer.remove(0, buffer.length);\n buffer.eof = false;\n buffer.bof = false;\n buffer.first = startIndex;\n buffer.next = startIndex;\n buffer.minIndex = startIndex; // Calculated when data is effectively accessed\n buffer.maxIndex = startIndex;\n buffer.minIndexUser = null; // as set by the user (datasource)\n buffer.maxIndexUser = null;\n },\n \n // PHIL: set the new index to be displayed without resettng the sroll and the calculated min/max\n // Note that this actually make sense with a fixed rowHeight when the scroll value can be calculated\n // for a # of rows\n resetStartIndex: function resetStartIndex(startIndex) {\n buffer.remove(0, buffer.length);\n buffer.eof = buffer.eof && startIndex==buffer.maxIndex;\n buffer.bof = buffer.bof && startIndex==buffer.maxIndex;\n buffer.first = startIndex;\n buffer.next = startIndex;\n },\n\n append(items) {\n items.forEach((item) => {\n ++buffer.next;\n buffer.insert('append', item);\n });\n buffer.maxIndex = buffer.eof ? buffer.next - 1 : Math.max(buffer.next - 1, buffer.maxIndex);\n },\n\n prepend(items) {\n items.reverse().forEach((item) => {\n --buffer.first;\n buffer.insert('prepend', item);\n });\n buffer.minIndex = buffer.bof ? buffer.minIndex = buffer.first : Math.min(buffer.first, buffer.minIndex);\n },\n\n /**\n * inserts wrapped element in the buffer\n * the first argument is either operation keyword (see below) or a number for operation 'insert'\n * for insert the number is the index for the buffer element the new one have to be inserted after\n * operations: 'append', 'prepend', 'insert', 'remove', 'update', 'none'\n */\n insert(operation, item, isTop) {\n const wrapper = {\n item: item\n };\n\n if (operation % 1 === 0) {// it is an insert\n wrapper.op = 'insert';\n buffer.splice(operation, 0, wrapper);\n if(isTop) {\n buffer.first--;\n }\n else {\n buffer.next++;\n }\n } else {\n wrapper.op = operation;\n switch (operation) {\n case 'append':\n buffer.push(wrapper);\n break;\n case 'prepend':\n buffer.unshift(wrapper);\n break;\n }\n }\n },\n\n // removes elements from buffer\n remove(arg1, arg2) {\n if (angular.isNumber(arg1)) {\n // removes items from arg1 (including) through arg2 (excluding)\n for (let i = arg1; i < arg2; i++) {\n elementRoutines.removeElement(buffer[i]);\n }\n return buffer.splice(arg1, arg2 - arg1);\n }\n // removes single item(wrapper) from the buffer\n buffer.splice(buffer.indexOf(arg1), 1);\n if(arg1._op === 'isTop' && buffer.first === this.getAbsMinIndex()) {\n this.incrementMinIndex();\n }\n else {\n this.decrementMaxIndex();\n }\n if(arg1._op === 'isTop') {\n buffer.first++;\n }\n else {\n buffer.next--;\n }\n if(!buffer.length) {\n buffer.first = 1;\n buffer.next = 1;\n }\n\n return elementRoutines.removeElementAnimated(arg1);\n },\n\n incrementMinIndex() {\n if(buffer.minIndexUser !== null) {\n if(buffer.minIndex > buffer.minIndexUser) {\n buffer.minIndexUser++;\n return;\n }\n if(buffer.minIndex === buffer.minIndexUser) {\n buffer.minIndexUser++;\n }\n }\n buffer.minIndex++;\n },\n\n decrementMaxIndex() {\n if(buffer.maxIndexUser !== null && buffer.maxIndex <= buffer.maxIndexUser) {\n buffer.maxIndexUser--;\n }\n buffer.maxIndex--;\n },\n\n getAbsMinIndex() {\n if(buffer.minIndexUser !== null) {\n return Math.min(buffer.minIndexUser, buffer.minIndex);\n }\n return buffer.minIndex;\n },\n\n getAbsMaxIndex() {\n if(buffer.maxIndexUser !== null) {\n return Math.max(buffer.maxIndexUser, buffer.maxIndex);\n }\n return buffer.maxIndex;\n },\n\n effectiveHeight(elements) {\n if (!elements.length) {\n return 0;\n }\n let top = Number.MAX_VALUE;\n let bottom = Number.NEGATIVE_INFINITY;\n elements.forEach((wrapper) => {\n if (wrapper.element[0].offsetParent) {\n // element style is not display:none\n top = Math.min(top, wrapper.element.offset().top);\n bottom = Math.max(bottom, wrapper.element.offset().top + (rowHeight || wrapper.element.outerHeight(true)));\n }\n });\n return Math.max(0, bottom - top);\n },\n\n getItems() {\n return buffer.filter(item => item.op === 'none');\n },\n\n getFirstItem() {\n const list = buffer.getItems();\n if (!list.length) {\n return null;\n }\n return list[0].item;\n },\n\n getLastItem() {\n const list = buffer.getItems();\n if (!list.length) {\n return null;\n }\n return list[list.length - 1].item;\n }\n\n });\n\n buffer.reset(startIndex);\n\n return buffer;\n}\n","// Can't just extend the Array, due to Babel does not support built-in classes extending\n// This solution was taken from https://stackoverflow.com/questions/46897414/es6-class-extends-array-workaround-for-es5-babel-transpile\nclass CacheProto {\n add(item) {\n for (let i = this.length - 1; i >= 0; i--) {\n if (this[i].index === item.scope.$index) {\n this[i].height = item.element.outerHeight();\n return;\n }\n }\n this.push({\n index: item.scope.$index,\n height: item.element.outerHeight()\n });\n this.sort((a, b) => ((a.index < b.index) ? -1 : ((a.index > b.index) ? 1 : 0)));\n }\n\n remove(argument, _isTop) {\n const index = argument % 1 === 0 ? argument : argument.scope.$index;\n const isTop = argument % 1 === 0 ? _isTop : argument._op === 'isTop';\n for (let i = this.length - 1; i >= 0; i--) {\n if (this[i].index === index) {\n this.splice(i, 1);\n break;\n }\n }\n if(!isTop) {\n for (let i = this.length - 1; i >= 0; i--) {\n if (this[i].index > index) {\n this[i].index--;\n }\n }\n }\n }\n\n clear() {\n this.length = 0;\n }\n}\n\nfunction Cache() {\n const instance = [];\n instance.push.apply(instance, arguments);\n Object.setPrototypeOf(instance, Cache.prototype);\n return instance;\n}\nCache.prototype = Object.create(Array.prototype);\nObject.getOwnPropertyNames(CacheProto.prototype).forEach(methodName =>\n Cache.prototype[methodName] = CacheProto.prototype[methodName]\n);\n\nfunction generateElement(template) {\n if(template.nodeType !== Node.ELEMENT_NODE) {\n throw new Error('ui-scroll directive requires an Element node for templating the view');\n }\n let element;\n switch (template.tagName.toLowerCase()) {\n case 'dl':\n throw new Error(`ui-scroll directive does not support <${template.tagName}> as a repeating tag: ${template.outerHTML}`);\n case 'tr':\n let table = angular.element('
    ');\n element = table.find('tr');\n break;\n case 'li':\n element = angular.element('
  • ');\n break;\n default:\n element = angular.element('
    ');\n }\n return element;\n}\n\n//\n// Padding represents the dummy element added to both the top and the bottom of the scrolling container\n// It holds the element, as well as a cache for the items (rows) height. In case of a fixed rowHeight, the \n// cache is not used and thus is not created.\n//\nclass Padding {\n constructor(template,useCache) {\n this.element = generateElement(template);\n if(useCache) {\n this.cache = new Cache();\n }\n }\n\n height() {\n // When called with a parameter, this sets the height of the padding\n return this.element.height.apply(this.element, arguments);\n }\n}\n\nexport default Padding;","import Padding from './padding';\n\nexport default function Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding, rowHeight) {\n let topPadding = null;\n let bottomPadding = null;\n const viewport = viewportController && viewportController.viewport ? viewportController.viewport : angular.element(window);\n const container = viewportController && viewportController.container ? viewportController.container : undefined;\n const scope = viewportController && viewportController.scope ? viewportController.scope : $rootScope;\n\n viewport.css({\n 'overflow-anchor': 'none',\n 'overflow-y': 'auto',\n 'display': 'block'\n });\n\n function bufferPadding() {\n return viewport.outerHeight() * padding; // some extra space to initiate preload\n }\n\n // \n // Viewport measurements\n //\n // +----------------+ 0\n // | top |\n // | padding |\n // +----------------+ topDataPos() [=topPadding.height]\n // | not visible |\n // | items |\n // +----------------+ topVisiblePos() [=viewport.scrollTop]\n // | |\n // | visible |\n // | items |\n // | |\n // +----------------+ bottomVisiblePos() [=viewport.scrollTop+viewport.height]\n // | not visible |\n // | items |\n // +----------------+ bottomDataPos() [=scrollHeight-bottomPadding.height]\n // | bottom |\n // | padding |\n // +----------------+ scrollHeight \n //\n // bufferPadding is some extra space we have top & bottom to allow infinite scrolling\n // bufferPadding = viewport.outerHeight() * padding\n //\n // bottomVisiblePos() - topVisiblePos() == viewport.outerHeight()\n \n\n angular.extend(viewport, {\n getScope() {\n return scope;\n },\n\n createPaddingElements(template) {\n topPadding = new Padding(template,!rowHeight);\n bottomPadding = new Padding(template,!rowHeight);\n element.before(topPadding.element);\n element.after(bottomPadding.element);\n topPadding.height(0);\n bottomPadding.height(0);\n },\n\n applyContainerStyle() {\n if (!container) {\n return true;\n }\n if(container !== viewport) {\n viewport.css('height', window.getComputedStyle(container[0]).height);\n }\n return viewport.height() > 0;\n },\n\n bottomDataPos() {\n let scrollHeight = viewport[0].scrollHeight;\n scrollHeight = scrollHeight != null ? scrollHeight : viewport[0].document.documentElement.scrollHeight;\n return scrollHeight - bottomPadding.height();\n },\n\n topDataPos() {\n return topPadding.height();\n },\n\n bottomVisiblePos() {\n return viewport.scrollTop() + viewport.outerHeight();\n },\n\n topVisiblePos() {\n return viewport.scrollTop();\n },\n\n insertElement(e, sibling) {\n return elementRoutines.insertElement(e, sibling || topPadding.element);\n },\n\n insertElementAnimated(e, sibling) {\n return elementRoutines.insertElementAnimated(e, sibling || topPadding.element);\n },\n\n shouldLoadBottom() {\n return !buffer.eof && viewport.bottomDataPos() < viewport.bottomVisiblePos() + bufferPadding();\n },\n\n clipBottom() {\n // clip the invisible items off the bottom\n let overage = 0;\n let emptySpaceHeight = viewport.bottomDataPos() - viewport.bottomVisiblePos() - bufferPadding();\n if(rowHeight) {\n overage = Math.min(buffer.length,Math.floor(emptySpaceHeight/rowHeight));\n } else {\n let itemHeight = 0;\n let overageHeight = 0;\n\n for (let i = buffer.length - 1; i >= 0; i--) {\n itemHeight = buffer[i].element.outerHeight(true);\n if (overageHeight + itemHeight > emptySpaceHeight) {\n break;\n }\n bottomPadding.cache.add(buffer[i]);\n overageHeight += itemHeight;\n overage++;\n }\n }\n\n if (overage > 0) {\n buffer.eof = false;\n buffer.remove(buffer.length - overage, buffer.length);\n buffer.next -= overage;\n viewport.adjustPaddings();\n }\n },\n\n shouldLoadTop() {\n return !buffer.bof && (viewport.topDataPos() > viewport.topVisiblePos() - bufferPadding());\n },\n\n clipTop() {\n // clip the invisible items off the top\n let overage = 0;\n let overageHeight = 0;\n let emptySpaceHeight = viewport.topVisiblePos() - viewport.topDataPos() - bufferPadding();\n if(rowHeight) {\n overage = Math.min(buffer.length,Math.floor(emptySpaceHeight/rowHeight));\n overageHeight = overage * rowHeight;\n } else {\n let itemHeight = 0;\n\n for (let i = 0; i < buffer.length; i++) {\n itemHeight = buffer[i].element.outerHeight(true);\n if (overageHeight + itemHeight > emptySpaceHeight) {\n break;\n }\n topPadding.cache.add(buffer[i]);\n overageHeight += itemHeight;\n overage++;\n }\n }\n\n if (overage > 0) {\n // we need to adjust top padding element before items are removed from top\n // to avoid strange behaviour of scroll bar during remove top items when we are at the very bottom\n topPadding.height(topPadding.height() + overageHeight);\n buffer.bof = false;\n buffer.remove(0, overage);\n buffer.first += overage;\n }\n },\n\n // PHIL: remove all the entries in the buffer without changing the scrollbar, nor the scroll position\n // and update the padding accordingly\n // It is designed to work with non fixed rowHeight, although it will need more tests in this area...\n scrollTo(first) {\n if(rowHeight) {\n first = Math.min(first, buffer.maxIndex);\n first = Math.max(first, buffer.minIndex);\n const min = buffer.getAbsMinIndex(); \n const max = buffer.getAbsMaxIndex();\n // Adjust the paddings before removing the elements to avoid touching the scroll top position\n topPadding.height((first-min)*rowHeight);\n bottomPadding.height(((max+1)-first)*rowHeight);\n buffer.resetStartIndex(first);\n } else {\n buffer.resetStartIndex(first);\n viewport.adjustPaddings();\n } \n },\n \n adjustPaddings() {\n if(rowHeight) {\n const min = buffer.getAbsMinIndex(); \n const max = buffer.getAbsMaxIndex();\n topPadding.height((buffer.first-min)*rowHeight);\n // PHIL: next points to the next possible item, while max is the index of the last one.\n // In order to make them compatible, we should add one to max\n // Also, it looks like buffer is not changing maxIndex when an element is inserted/appended\n // Not sure if this can have a consequence or not....\n bottomPadding.height(((max+1)-buffer.next)*rowHeight);\n return;\n }\n\n if (!buffer.length) {\n return;\n }\n\n // precise heights calculation based on items that are in buffer or that were in buffer once\n const visibleItemsHeight = buffer.reduce((summ, item) => summ + item.element.outerHeight(true), 0);\n let topPaddingHeight = 0, topCount = 0;\n topPadding.cache.forEach(item => {\n if(item.index < buffer.first) {\n topPaddingHeight += item.height;\n topCount++;\n }\n });\n \n let bottomPaddingHeight = 0, bottomCount = 0;\n bottomPadding.cache.forEach(item => {\n if(item.index >= buffer.next) {\n bottomPaddingHeight += item.height;\n bottomCount++;\n }\n });\n \n const totalHeight = visibleItemsHeight + topPaddingHeight + bottomPaddingHeight;\n const averageItemHeight = totalHeight / (topCount + bottomCount + buffer.length); \n\n // average heights calculation, items that have never been reached\n let adjustTopPadding = buffer.minIndexUser !== null && buffer.minIndex > buffer.minIndexUser;\n let adjustBottomPadding = buffer.maxIndexUser !== null && buffer.maxIndex < buffer.maxIndexUser;\n let topPaddingHeightAdd = adjustTopPadding ? (buffer.minIndex - buffer.minIndexUser) * averageItemHeight : 0;\n let bottomPaddingHeightAdd = adjustBottomPadding ? (buffer.maxIndexUser - buffer.maxIndex) * averageItemHeight : 0;\n\n // paddings combine adjustment\n topPadding.height(topPaddingHeight + topPaddingHeightAdd);\n bottomPadding.height(bottomPaddingHeight + bottomPaddingHeightAdd);\n },\n\n onAfterMinIndexSet(topPaddingHeightOld) {\n // additional scrollTop adjustment in case of datasource.minIndex external set\n if (buffer.minIndexUser !== null && buffer.minIndex > buffer.minIndexUser) {\n let diff = topPadding.height() - topPaddingHeightOld;\n viewport.scrollTop(viewport.scrollTop() + diff);\n while((diff -= viewport.scrollTop()) > 0) {\n bottomPadding.height(bottomPadding.height() + diff);\n viewport.scrollTop(viewport.scrollTop() + diff);\n }\n }\n },\n\n onAfterPrepend(updates) {\n if (!updates.prepended.length)\n return;\n const height = buffer.effectiveHeight(updates.prepended);\n const paddingHeight = topPadding.height() - height;\n if (paddingHeight >= 0) {\n topPadding.height(paddingHeight);\n }\n else {\n topPadding.height(0);\n viewport.scrollTop(viewport.scrollTop() - paddingHeight);\n }\n },\n\n resetTopPadding() {\n topPadding.height(0);\n if(topPadding.cache) {\n topPadding.cache.clear();\n }\n },\n\n resetBottomPadding() {\n bottomPadding.height(0);\n if(bottomPadding.cache) {\n bottomPadding.cache.clear();\n }\n },\n\n removeCacheItem(item, isTop) {\n if(topPadding.cache) {\n topPadding.cache.remove(item, isTop);\n }\n if(bottomPadding.cache) {\n bottomPadding.cache.remove(item, isTop);\n }\n },\n\n removeItem(item) {\n this.removeCacheItem(item);\n return buffer.remove(item);\n }\n });\n\n return viewport;\n}\n","class Adapter {\n\n constructor($scope, $parse, $attr, viewport, buffer, doAdjust, reload) {\n this.$parse = $parse;\n this.$attr = $attr;\n this.viewport = viewport;\n this.buffer = buffer;\n\n this.doAdjust = doAdjust;\n this.reload = reload;\n\n this.isLoading = false;\n this.disabled = false;\n\n const viewportScope = viewport.getScope();\n this.startScope = viewportScope.$parent ? viewportScope : $scope;\n\n this.publicContext = {};\n this.assignAdapter($attr.adapter);\n this.generatePublicContext();\n }\n\n assignAdapter(adapterAttr) {\n if (!adapterAttr || !(adapterAttr = adapterAttr.replace(/^\\s+|\\s+$/gm, ''))) {\n return;\n }\n let adapterOnScope;\n\n try {\n this.$parse(adapterAttr).assign(this.startScope, {});\n adapterOnScope = this.$parse(adapterAttr)(this.startScope);\n }\n catch (error) {\n error.message = `Angular ui-scroll Adapter assignment exception.\\n` +\n `Can't parse \"${adapterAttr}\" expression.\\n` +\n error.message;\n throw error;\n }\n\n angular.extend(adapterOnScope, this.publicContext);\n this.publicContext = adapterOnScope;\n }\n\n generatePublicContext() {\n // these methods will be accessible out of ui-scroll via user defined adapter\n const publicMethods = ['reload', 'applyUpdates', 'append', 'prepend', 'isBOF', 'isEOF', 'isEmpty'];\n for (let i = publicMethods.length - 1; i >= 0; i--) {\n this.publicContext[publicMethods[i]] = this[publicMethods[i]].bind(this);\n }\n\n // these read-only props will be accessible out of ui-scroll via user defined adapter\n const publicProps = ['isLoading', 'topVisible', 'topVisibleElement', 'topVisibleScope', 'bottomVisible', 'bottomVisibleElement', 'bottomVisibleScope'];\n for (let i = publicProps.length - 1; i >= 0; i--) {\n let property, attr = this.$attr[publicProps[i]];\n Object.defineProperty(this, publicProps[i], {\n get: () => property,\n set: (value) => {\n property = value;\n this.publicContext[publicProps[i]] = value;\n if (attr) {\n this.$parse(attr).assign(this.startScope, value);\n }\n }\n });\n }\n\n // read-only immediately calculated public properties\n const publicPropsImmediate = ['bufferFirst', 'bufferLast', 'bufferLength'];\n for (let i = publicPropsImmediate.length - 1; i >= 0; i--) {\n Object.defineProperty(this.publicContext, publicPropsImmediate[i], {\n get: () => this[publicPropsImmediate[i]]\n });\n }\n\n // non-read-only public property\n Object.defineProperty(this.publicContext, 'disabled', {\n get: () => this.disabled,\n set: (value) => (!(this.disabled = value)) ? this.doAdjust() : null\n });\n }\n\n loading(value) {\n this.isLoading = value;\n }\n\n isBOF() {\n return this.buffer.bof;\n }\n\n isEOF() {\n return this.buffer.eof;\n }\n\n isEmpty() {\n return !this.buffer.length;\n }\n\n get bufferLength() {\n return this.buffer.getItems().length;\n }\n\n get bufferFirst() {\n return this.buffer.getFirstItem();\n }\n\n get bufferLast() {\n return this.buffer.getLastItem();\n }\n\n append(newItems) {\n this.buffer.append(newItems);\n this.doAdjust();\n this.viewport.clipTop();\n this.viewport.clipBottom();\n }\n\n prepend(newItems) {\n this.buffer.prepend(newItems);\n this.doAdjust();\n this.viewport.clipTop();\n this.viewport.clipBottom();\n }\n\n applyUpdates(arg1, arg2, arg3) {\n if (typeof arg1 === 'function') {\n this.applyUpdatesFunc(arg1, arg2);\n } else {\n this.applyUpdatesIndex(arg1, arg2, arg3);\n }\n this.doAdjust();\n }\n\n applyUpdatesFunc(cb, options) {\n this.buffer.slice(0).forEach((wrapper) => {\n // we need to do it on the buffer clone, because buffer content\n // may change as we iterate through\n this.applyUpdate(wrapper, cb(wrapper.item, wrapper.scope, wrapper.element), options);\n });\n }\n\n applyUpdatesIndex(index, newItems, options = {}) {\n if (index % 1 !== 0) {\n throw new Error('applyUpdates - ' + index + ' is not a valid index (should be an integer)');\n }\n const _index = index - this.buffer.first;\n\n // apply updates only within buffer\n if (_index >= 0 && _index < this.buffer.length) {\n this.applyUpdate(this.buffer[_index], newItems, options);\n }\n // out-of-buffer case: deletion may affect Paddings\n else if(index >= this.buffer.getAbsMinIndex() && index <= this.buffer.getAbsMaxIndex()) {\n if(angular.isArray(newItems) && !newItems.length) {\n this.viewport.removeCacheItem(index, !options.immutableTop && index === this.buffer.minIndex);\n if (!options.immutableTop && index === this.buffer.getAbsMinIndex()) {\n this.buffer.incrementMinIndex();\n }\n else {\n this.buffer.decrementMaxIndex();\n }\n }\n }\n }\n\n applyUpdate(wrapper, newItems, options = {}) {\n if (!angular.isArray(newItems)) {\n return;\n }\n let position = this.buffer.indexOf(wrapper);\n if (!newItems.reverse().some(newItem => newItem === wrapper.item)) {\n wrapper.op = 'remove';\n if (!options.immutableTop && position === 0 && !newItems.length) {\n wrapper._op = 'isTop'; // to catch \"first\" edge case on remove\n }\n }\n newItems.forEach((newItem) => {\n if (newItem === wrapper.item) {\n position--;\n } else {\n // 3 parameter (isTop) is to catch \"first\" edge case on insert\n this.buffer.insert(position + 1, newItem, !options.immutableTop && position === -1);\n }\n });\n }\n\n calculateProperties() {\n let rowTop = null, topHeight = 0;\n let topDone = false, bottomDone = false;\n const length = this.buffer.length;\n\n for (let i = 0; i < length; i++) {\n const item = this.buffer[i];\n const itemTop = item.element.offset().top;\n\n if (rowTop !== itemTop) { // a new row condition\n const itemHeight = item.element.outerHeight(true);\n const top = this.viewport.topDataPos() + topHeight + itemHeight;\n\n if (!topDone && top > this.viewport.topVisiblePos()) {\n topDone = true;\n this['topVisible'] = item.item;\n this['topVisibleElement'] = item.element;\n this['topVisibleScope'] = item.scope;\n }\n if (!bottomDone && (top >= this.viewport.bottomVisiblePos() || (i === length - 1 && this.isEOF()))) {\n bottomDone = true;\n this['bottomVisible'] = item.item;\n this['bottomVisibleElement'] = item.element;\n this['bottomVisibleScope'] = item.scope;\n }\n topHeight += itemHeight;\n }\n rowTop = itemTop;\n\n if (topDone && bottomDone) {\n break;\n }\n }\n }\n\n}\n\nexport default Adapter;\n","import JQLiteExtras from './modules/jqLiteExtras';\nimport ElementRoutines from './modules/elementRoutines.js';\nimport ScrollBuffer from './modules/buffer.js';\nimport Viewport from './modules/viewport.js';\nimport Adapter from './modules/adapter.js';\n\nangular.module('ui.scroll', [])\n\n .constant('JQLiteExtras', JQLiteExtras)\n .run(['JQLiteExtras', (JQLiteExtras) => {\n const elt = angular.element;\n !(window.jQuery && elt.fn && elt.fn.jquery) ? (new JQLiteExtras()).registerFor(elt) : null;\n ElementRoutines.addCSSRules();\n }])\n\n .directive('uiScrollViewport', function () {\n return {\n restrict: 'A',\n controller: [\n '$scope',\n '$element',\n function (scope, element) {\n this.container = element;\n this.viewport = element;\n this.scope = scope;\n\n angular.forEach(element.children(), child => {\n if (child.tagName.toLowerCase() === 'tbody') {\n this.viewport = angular.element(child);\n }\n });\n\n return this;\n }\n ]\n };\n })\n\n .directive('uiScroll', [\n '$log',\n '$injector',\n '$rootScope',\n '$timeout',\n '$interval',\n '$q',\n '$parse',\n function (console, $injector, $rootScope, $timeout, $interval, $q, $parse) {\n\n return {\n require: ['?^uiScrollViewport'],\n restrict: 'A',\n transclude: 'element',\n priority: 1000,\n terminal: true,\n link: link\n };\n\n function link($scope, element, $attr, controllers, linker) {\n const match = $attr.uiScroll.match(/^\\s*(\\w+)\\s+in\\s+([(\\w|\\$)\\.]+)\\s*$/);\n if (!match) {\n throw new Error('Expected uiScroll in form of \\'_item_ in _datasource_\\' but got \\'' + $attr.uiScroll + '\\'');\n }\n\n function parseNumber(value, defaultValue, isFloat) {\n if (!isFloat) {\n value = value === null ? defaultValue : Math.floor(value);\n }\n return isNaN(value) ? defaultValue : value;\n }\n\n function parseNumericAttr(value, defaultValue, isFloat) {\n const result = $parse(value)($scope);\n return parseNumber(result, defaultValue, isFloat);\n }\n\n const BUFFER_MIN = 3; // Minimum size of the data source request\n const BUFFER_DEFAULT = 10; // Default datasource request size\n const PADDING_MIN = 0.3; // Mininum # of rows in the padding area\n const PADDING_DEFAULT = 0.5; // Default # of rows in the padding area\n const START_INDEX_DEFAULT = 1; // Default start index when requestng the first data block\n const MAX_VIEWPORT_DELAY = 500; // Max time wait (ms) to get the viewport with an height>0\n const VIEWPORT_POLLING_INTERVAL = 50; // Interval used to check the initial viewport height\n\n let datasource = null;\n const itemName = match[1]; // Name of the index variable to publish\n const datasourceName = match[2]; // Name of the datasource to request the rows from\n const viewportController = controllers[0]; // ViewportController, as specified in the require option (http://websystique.com/angularjs/angularjs-custom-directives-controllers-require-option-guide/)\n const bufferSize = Math.max(BUFFER_MIN, parseNumericAttr($attr.bufferSize, BUFFER_DEFAULT)); \n const padding = Math.max(PADDING_MIN, parseNumericAttr($attr.padding, PADDING_DEFAULT, true));\n let startIndex = parseNumericAttr($attr.startIndex, START_INDEX_DEFAULT);\n\n // PHIL: Provide a fixed row height\n // \n const rowHeight = parseNumericAttr($attr.rowHeight, null, false);\n\n // PHIL: Read the visibility watch option, true by default\n const allowVisibilityWatch = $attr.allowVisibilityWatch!=='false';\n\n // Revision IDs\n // \n let ridActual = 0; // current data revision id\n let pending = [];\n\n const elementRoutines = new ElementRoutines($injector, $q);\n const buffer = new ScrollBuffer(elementRoutines, bufferSize, startIndex, rowHeight);\n const viewport = new Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding, rowHeight);\n const adapter = new Adapter($scope, $parse, $attr, viewport, buffer, doAdjust, reload);\n\n if (viewportController) {\n viewportController.adapter = adapter;\n }\n\n // Currently, we only debounce the scroll events when a fixed rowHeight is provided\n // as the unit tests will have to be adapted to support this feature\n let scPreviousScrollTop=-1;\n\n const isDatasourceValid = () =>\n Object.prototype.toString.call(datasource) === '[object Object]' && typeof datasource.get === 'function';\n\n datasource = $parse(datasourceName)($scope); // try to get datasource on scope\n if (!isDatasourceValid()) {\n datasource = $injector.get(datasourceName); // try to inject datasource as service\n if (!isDatasourceValid()) {\n throw new Error(datasourceName + ' is not a valid datasource');\n }\n }\n\n let onRenderHandlers = [];\n function onRenderHandlersRunner() {\n onRenderHandlers.forEach(handler => handler.run());\n onRenderHandlers = [];\n }\n function persistDatasourceIndex(datasource, propName) {\n let getter;\n // need to postpone min/maxIndexUser processing if the view is empty\n if(angular.isNumber(datasource[propName])) {\n getter = datasource[propName];\n if(angular.isNumber(getter)) {\n onRenderHandlers = onRenderHandlers.filter(handler => handler.id !== propName);\n onRenderHandlers.push({\n id: propName,\n run: () => datasource[propName] = getter\n });\n }\n }\n }\n\n function defineDatasourceIndex(datasource, propName, propUserName) {\n const descriptor = Object.getOwnPropertyDescriptor(datasource, propName);\n if (descriptor && (descriptor.set || descriptor.get)) {\n return;\n }\n let getter;\n persistDatasourceIndex(datasource, propName);\n Object.defineProperty(datasource, propName, {\n set: (value) => {\n getter = value;\n if(pending.length && !buffer.length) {\n persistDatasourceIndex(datasource, propName);\n return;\n }\n buffer[propUserName] = value;\n const topPaddingHeightOld = viewport.topDataPos();\n viewport.adjustPaddings();\n if (propName === 'minIndex') {\n viewport.onAfterMinIndexSet(topPaddingHeightOld);\n }\n },\n get: () => getter\n });\n }\n\n defineDatasourceIndex(datasource, 'minIndex', 'minIndexUser');\n defineDatasourceIndex(datasource, 'maxIndex', 'maxIndexUser');\n\n const fetchNext = (datasource.get.length !== 2) ?\n (success) => datasource.get(buffer.next, bufferSize, success) :\n (success) => {\n datasource.get({\n index: buffer.next,\n append: buffer.length ? buffer[buffer.length - 1].item : void 0,\n count: bufferSize\n }, success);\n };\n\n const fetchPrevious = (datasource.get.length !== 2) ?\n (success) => datasource.get(buffer.first - bufferSize, bufferSize, success) :\n (success) => {\n datasource.get({\n index: buffer.first - bufferSize,\n prepend: buffer.length ? buffer[0].item : void 0,\n count: bufferSize\n }, success);\n };\n\n const initialize = () => {\n let tryCount = 0;\n if(!viewport.applyContainerStyle()) {\n const timer = $interval(() => {\n tryCount++;\n if(viewport.applyContainerStyle()) {\n $interval.cancel(timer);\n doAdjust();\n }\n if(tryCount * VIEWPORT_POLLING_INTERVAL >= MAX_VIEWPORT_DELAY) {\n $interval.cancel(timer);\n throw Error(`ui-scroll directive requires a viewport with non-zero height in ${MAX_VIEWPORT_DELAY}ms`);\n }\n }, VIEWPORT_POLLING_INTERVAL);\n }\n else {\n doAdjust();\n }\n };\n\n /**\n * Build padding elements\n *\n * Calling linker is the only way I found to get access to the tag name of the template\n * to prevent the directive scope from pollution a new scope is created and destroyed\n * right after the builder creation is completed\n */\n linker((clone, scope) => {\n viewport.createPaddingElements(clone[0]);\n // we do not include the clone in the DOM. It means that the nested directives will not\n // be able to reach the parent directives, but in this case it is intentional because we\n // created the clone to access the template tag name\n scope.$destroy();\n clone.remove();\n });\n\n $scope.$on('$destroy', () => {\n unbindEvents();\n viewport.unbind('mousewheel', wheelHandler);\n });\n\n viewport.bind('mousewheel', wheelHandler);\n\n initialize();\n\n /* Private function definitions */\n\n function isInvalid(rid) {\n return (rid && rid !== ridActual) || $scope.$$destroyed;\n }\n\n function bindEvents() {\n viewport.bind('resize', resizeAndScrollHandler);\n viewport.bind('scroll', resizeAndScrollHandler);\n // If a scroll event happened while the handler was not bounded, emit the scroll\n if(isPendingScroll()) {\n // Do it immediately\n _resizeAndScrollHandler();\n }\n }\n\n function unbindEvents() {\n viewport.unbind('resize', resizeAndScrollHandler);\n viewport.unbind('scroll', resizeAndScrollHandler);\n }\n\n function reload() {\n unbindEvents();\n viewport.resetTopPadding();\n viewport.resetBottomPadding();\n if (arguments.length) {\n startIndex = parseNumber(arguments[0], START_INDEX_DEFAULT, false);\n }\n buffer.reset(startIndex);\n scPreviousScrollTop = -1; // Avoid isScrollPending() to be true\n persistDatasourceIndex(datasource, 'minIndex');\n persistDatasourceIndex(datasource, 'maxIndex');\n doAdjust();\n }\n\n function scrollTo(first) {\n unbindEvents();\n viewport.scrollTo(first);\n doAdjust();\n }\n\n function isElementVisible(wrapper) {\n return (rowHeight || wrapper.element.height()) && wrapper.element[0].offsetParent;\n }\n\n function visibilityWatcher(wrapper) {\n if (isElementVisible(wrapper)) {\n buffer.forEach((item) => {\n if (typeof item.unregisterVisibilityWatcher === 'function') {\n item.unregisterVisibilityWatcher();\n delete item.unregisterVisibilityWatcher;\n }\n });\n if (!pending.length) {\n $timeout(() => doAdjust());\n }\n }\n }\n\n function insertWrapperContent(wrapper, insertAfter) {\n createElement(wrapper, insertAfter, viewport.insertElement);\n if (allowVisibilityWatch && !isElementVisible(wrapper)) {\n wrapper.unregisterVisibilityWatcher = wrapper.scope.$watch(() => visibilityWatcher(wrapper));\n }\n if (allowVisibilityWatch) {\n elementRoutines.hideElement(wrapper); // hide inserted elements before data binding\n }\n }\n\n function createElement(wrapper, insertAfter, insertElement) {\n let promises = null;\n const sibling = (insertAfter > 0) ? buffer[insertAfter - 1].element : undefined;\n linker((clone, scope) => {\n promises = insertElement(clone, sibling);\n wrapper.element = clone;\n wrapper.scope = scope;\n scope[itemName] = wrapper.item;\n });\n // ui-scroll-grid apply\n if (adapter.transform) {\n const tdInitializer = wrapper.scope.uiScrollTdInitializer;\n if (tdInitializer && tdInitializer.linking) {\n adapter.transform(wrapper.scope, wrapper.element);\n } else {\n wrapper.scope.uiScrollTdInitializer = {\n onLink: () => adapter.transform(wrapper.scope, wrapper.element),\n scope: wrapper.scope\n };\n }\n }\n return promises;\n }\n\n function updateDOM() {\n let promises = [];\n const toBePrepended = [];\n const toBeRemoved = [];\n const inserted = [];\n\n buffer.forEach((wrapper, i) => {\n switch (wrapper.op) {\n case 'prepend':\n toBePrepended.unshift(wrapper);\n break;\n case 'append':\n insertWrapperContent(wrapper, i);\n wrapper.op = 'none';\n inserted.push(wrapper);\n break;\n case 'insert':\n promises = promises.concat(createElement(wrapper, i, viewport.insertElementAnimated));\n wrapper.op = 'none';\n inserted.push(wrapper);\n break;\n case 'remove':\n toBeRemoved.push(wrapper);\n }\n });\n\n toBeRemoved.forEach((wrapper) => promises = promises.concat(viewport.removeItem(wrapper)));\n\n if (toBePrepended.length)\n toBePrepended.forEach((wrapper) => {\n insertWrapperContent(wrapper);\n wrapper.op = 'none';\n });\n\n buffer.forEach((item, i) => item.scope.$index = buffer.first + i);\n\n return {\n prepended: toBePrepended,\n removed: toBeRemoved,\n inserted: inserted,\n animated: promises\n };\n\n }\n\n // Adjust the viewport paddings\n // \n function updatePaddings(rid, updates) {\n // schedule another doAdjust after animation completion\n if (updates.animated.length) {\n $q.all(updates.animated).then(() => {\n viewport.adjustPaddings();\n doAdjust(rid);\n });\n } else {\n viewport.adjustPaddings();\n }\n }\n\n function enqueueFetch(rid, updates) {\n // If there is a scroll pending, we don't enqueue the fetch as the scroll might be an absolute scroll\n // So we don't need to load top or bottom\n // This happens when there is a scroll frenzi, and the $digest is slow enough, so it stacks the calls without\n // giving a chance to the scroll event to be emitted and processed.\n if(isPendingScroll()) {\n return;\n }\n\n if (viewport.shouldLoadBottom()) {\n if (!updates || buffer.effectiveHeight(updates.inserted) > 0) {\n // this means that at least one item appended in the last batch has height > 0\n if (pending.push(true) === 1) {\n adapter.loading(true);\n fetch(rid);\n }\n }\n } else if (viewport.shouldLoadTop()) {\n if ((!updates || buffer.effectiveHeight(updates.prepended) > 0) || pending[0]) {\n // this means that at least one item appended in the last batch has height > 0\n // pending[0] = true means that previous fetch was appending. We need to force at least one prepend\n // BTW there will always be at least 1 element in the pending array because bottom is fetched first\n if (pending.push(false) === 1) {\n adapter.loading(true);\n fetch(rid);\n }\n }\n }\n }\n\n function processUpdates() {\n const updates = updateDOM();\n\n // We need the item bindings to be processed before we can do adjustments\n // If there are no changes and the row-height is static, then ignore it!\n const changes = updates.animated.length+updates.inserted.length+updates.prepended.length+updates.removed.length;\n if(changes || !rowHeight) {\n !$scope.$$phase && !$rootScope.$$phase && $scope.$digest();\n }\n\n if (allowVisibilityWatch) {\n updates.inserted.forEach(w => elementRoutines.showElement(w));\n updates.prepended.forEach(w => elementRoutines.showElement(w));\n }\n\n return updates;\n }\n\n function doAdjust(rid) {\n if (!rid) { // dismiss pending requests\n pending = [];\n rid = ++ridActual;\n }\n\n const updates = processUpdates();\n\n if (isInvalid(rid)) {\n return;\n }\n\n updatePaddings(rid, updates);\n enqueueFetch(rid);\n\n if (!pending.length) {\n adapter.calculateProperties();\n }\n }\n\n function doAdjustAfterFetch(rid) {\n const updates = processUpdates();\n\n viewport.onAfterPrepend(updates);\n\n if (isInvalid(rid)) {\n return;\n }\n\n updatePaddings(rid, updates);\n onRenderHandlersRunner();\n enqueueFetch(rid, updates);\n pending.shift();\n\n if (pending.length)\n fetch(rid);\n else {\n adapter.loading(false);\n bindEvents();\n adapter.calculateProperties();\n }\n }\n\n function fetch(rid) {\n if (pending[0]) {// scrolling down\n if (buffer.length && !viewport.shouldLoadBottom()) {\n doAdjustAfterFetch(rid);\n } else {\n fetchNext((result) => {\n if (isInvalid(rid)) {\n return;\n }\n\n if (result.length < bufferSize) {\n buffer.eof = true;\n }\n\n if (result.length > 0) {\n viewport.clipTop();\n buffer.append(result);\n }\n\n doAdjustAfterFetch(rid);\n });\n }\n } else { // scrolling up\n if (buffer.length && !viewport.shouldLoadTop()) {\n doAdjustAfterFetch(rid);\n } else {\n fetchPrevious((result) => {\n if (isInvalid(rid)) {\n return;\n }\n\n if (result.length < bufferSize) {\n buffer.bof = true;\n // log 'bof is reached'\n }\n\n if (result.length > 0) {\n if (buffer.length) {\n viewport.clipBottom();\n }\n buffer.prepend(result);\n }\n\n doAdjustAfterFetch(rid);\n });\n }\n }\n }\n \n function isPendingScroll() {\n if(rowHeight) {\n // Maybe the scroll changed but the event has *not* yet being dispatched\n // because of the $digest running and taking to long\n var sc = viewport.scrollTop();\n if(sc!=scPreviousScrollTop && scPreviousScrollTop>=0) {\n return true;\n }\n }\n return false;\n }\n\n // Deboucing the scroll events avois intermediate $digest when scrolling fast\n let scTimer;\n function resizeAndScrollHandler() {\n if (rowHeight) {\n if (scTimer) clearTimeout(scTimer);\n scTimer = setTimeout(_resizeAndScrollHandler, 20);\n } else {\n _resizeAndScrollHandler();\n }\n }\n\n function _resizeAndScrollHandler() {\n if (!$rootScope.$$phase && !adapter.isLoading && !adapter.disabled) {\n // Absolute positioning currently only works when a fixed rowHeight is provided\n // We might isolate the averegaRowHeight calculation in the viewport to provide an estimate\n // and provide a reasonable behavior with variable height as well\n if(rowHeight) {\n scPreviousScrollTop = viewport.scrollTop();\n let newFirst = Math.floor(viewport.scrollTop() / rowHeight) + buffer.minIndex;\n newFirst = Math.max(buffer.minIndex, Math.min(buffer.maxIndex,newFirst)); // Bound the scroll\n if (newFirst=buffer.next) {\n scrollTo(newFirst);\n return;\n } \n }\n\n enqueueFetch(ridActual);\n\n if (pending.length) {\n unbindEvents();\n } else {\n adapter.calculateProperties();\n if(!rowHeight) {\n // The digest is forced to calculate the height, which is not necessary when the height is knowm\n !$scope.$$phase && $scope.$digest();\n }\n }\n }\n }\n\n function wheelHandler(event) {\n if (!adapter.disabled) {\n const scrollTop = viewport[0].scrollTop;\n const yMax = viewport[0].scrollHeight - viewport[0].clientHeight;\n\n if ((scrollTop === 0 && !buffer.bof) || (scrollTop === yMax && !buffer.eof)) {\n event.preventDefault();\n }\n }\n }\n }\n\n }\n ]);\n"],"sourceRoot":""} \ No newline at end of file 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<= ref ? j <= ref : j >= ref; i = 1 <= ref ? ++j : --j) {\n if (children[i] === elem) {\n angular.element(children[i - 1]).after(newElem);\n return;\n }\n }\n throw new Error('invalid DOM structure ' + elem.outerHTML);\n }\n },\n height (value){\n var self;\n self = this;\n if (typeof value !== 'undefined') {\n if (angular.isNumber(value)) {\n value = value + 'px';\n }\n return css.call(self, 'height', value);\n } else {\n return getWidthHeight(this[0], 'height', 'base');\n }\n },\n outerHeight(option) {\n return getWidthHeight(this[0], 'height', option ? 'outerfull' : 'outer');\n },\n outerWidth(option) {\n return getWidthHeight(this[0], 'width', option ? 'outerfull' : 'outer');\n },\n\n /*\n The offset setter method is not implemented\n */\n offset(value) {\n let docElem, win;\n let self = this;\n let box = {\n top: 0,\n left: 0\n };\n let elem = self[0];\n let doc = elem && elem.ownerDocument;\n\n if (arguments.length) {\n if (value === undefined) {\n return self;\n }\n // TODO: implement setter\n throw new Error('offset setter method is not implemented');\n }\n\n if (!doc) {\n return;\n }\n\n docElem = doc.documentElement;\n\n // TODO: Make sure it's not a disconnected DOM node\n\n if (elem.getBoundingClientRect != null) {\n box = elem.getBoundingClientRect();\n }\n\n win = doc.defaultView || doc.parentWindow;\n\n return {\n top: box.top + (win.pageYOffset || docElem.scrollTop) - (docElem.clientTop || 0),\n left: box.left + (win.pageXOffset || docElem.scrollLeft) - (docElem.clientLeft || 0)\n };\n },\n scrollTop(value) {\n return scrollTo(this, 'top', value);\n },\n scrollLeft(value) {\n return scrollTo(this, 'left', value);\n }\n }, (value, key) => {\n if (!element.prototype[key]) {\n return element.prototype[key] = value;\n }\n });\n }\n\n}\n","const hideClassToken = 'ng-ui-scroll-hide';\n\nexport default class ElementRoutines {\n\n static addCSSRules() {\n const selector = '.' + hideClassToken;\n const rules = 'display: none';\n const sheet = document.styleSheets[0];\n let index;\n try {\n index = sheet.cssRules.length;\n } catch (err) {\n index = 0;\n }\n if('insertRule' in sheet) {\n sheet.insertRule(selector + '{' + rules + '}', index);\n }\n else if('addRule' in sheet) {\n sheet.addRule(selector, rules, index);\n }\n }\n\n constructor($injector, $q) {\n this.$animate = ($injector.has && $injector.has('$animate')) ? $injector.get('$animate') : null;\n this.isAngularVersionLessThen1_3 = angular.version.major === 1 && angular.version.minor < 3;\n this.$q = $q;\n }\n\n hideElement(wrapper) {\n wrapper.element.addClass(hideClassToken);\n }\n\n showElement(wrapper) {\n wrapper.element.removeClass(hideClassToken);\n }\n\n insertElement(newElement, previousElement) {\n previousElement.after(newElement);\n return [];\n }\n\n removeElement(wrapper) {\n wrapper.element.remove();\n wrapper.scope.$destroy();\n return [];\n }\n\n insertElementAnimated(newElement, previousElement) {\n if (!this.$animate) {\n return this.insertElement(newElement, previousElement);\n }\n\n if (this.isAngularVersionLessThen1_3) {\n const deferred = this.$q.defer();\n // no need for parent - previous element is never null\n this.$animate.enter(newElement, null, previousElement, () => deferred.resolve());\n\n return [deferred.promise];\n }\n\n // no need for parent - previous element is never null\n return [this.$animate.enter(newElement, null, previousElement)];\n }\n\n removeElementAnimated(wrapper) {\n if (!this.$animate) {\n return this.removeElement(wrapper);\n }\n\n if (this.isAngularVersionLessThen1_3) {\n const deferred = this.$q.defer();\n this.$animate.leave(wrapper.element, () => {\n wrapper.scope.$destroy();\n return deferred.resolve();\n });\n\n return [deferred.promise];\n }\n\n return [(this.$animate.leave(wrapper.element)).then(() => wrapper.scope.$destroy())];\n }\n}","export default function ScrollBuffer(elementRoutines, bufferSize, startIndex, rowHeight) {\n const buffer = Object.create(Array.prototype);\n\n angular.extend(buffer, {\n size: bufferSize,\n\n reset(startIndex) {\n buffer.remove(0, buffer.length);\n buffer.eof = false;\n buffer.bof = false;\n buffer.first = startIndex;\n buffer.next = startIndex;\n buffer.minIndex = startIndex; // Calculated when data is effectively accessed\n buffer.maxIndex = startIndex;\n buffer.minIndexUser = null; // as set by the user (datasource)\n buffer.maxIndexUser = null;\n },\n \n // PHIL: set the new index to be displayed without resettng the sroll and the calculated min/max\n // Note that this actually make sense with a fixed rowHeight when the scroll value can be calculated\n // for a # of rows\n resetStartIndex: function resetStartIndex(startIndex) {\n buffer.remove(0, buffer.length);\n buffer.eof = buffer.eof && startIndex==buffer.maxIndex;\n buffer.bof = buffer.bof && startIndex==buffer.minIndex;\n buffer.first = startIndex;\n buffer.next = startIndex;\n },\n\n append(items) {\n items.forEach((item) => {\n ++buffer.next;\n buffer.insert('append', item);\n });\n buffer.maxIndex = buffer.eof ? buffer.next - 1 : Math.max(buffer.next - 1, buffer.maxIndex);\n },\n\n prepend(items) {\n items.reverse().forEach((item) => {\n --buffer.first;\n buffer.insert('prepend', item);\n });\n buffer.minIndex = buffer.bof ? buffer.minIndex = buffer.first : Math.min(buffer.first, buffer.minIndex);\n },\n\n /**\n * inserts wrapped element in the buffer\n * the first argument is either operation keyword (see below) or a number for operation 'insert'\n * for insert the number is the index for the buffer element the new one have to be inserted after\n * operations: 'append', 'prepend', 'insert', 'remove', 'update', 'none'\n */\n insert(operation, item, isTop) {\n const wrapper = {\n item: item\n };\n\n if (operation % 1 === 0) {// it is an insert\n wrapper.op = 'insert';\n buffer.splice(operation, 0, wrapper);\n if(isTop) {\n buffer.first--;\n }\n else {\n buffer.next++;\n }\n } else {\n wrapper.op = operation;\n switch (operation) {\n case 'append':\n buffer.push(wrapper);\n break;\n case 'prepend':\n buffer.unshift(wrapper);\n break;\n }\n }\n },\n\n // removes elements from buffer\n remove(arg1, arg2) {\n if (angular.isNumber(arg1)) {\n // removes items from arg1 (including) through arg2 (excluding)\n for (let i = arg1; i < arg2; i++) {\n elementRoutines.removeElement(buffer[i]);\n }\n return buffer.splice(arg1, arg2 - arg1);\n }\n // removes single item(wrapper) from the buffer\n buffer.splice(buffer.indexOf(arg1), 1);\n if(arg1._op === 'isTop' && buffer.first === this.getAbsMinIndex()) {\n this.incrementMinIndex();\n }\n else {\n this.decrementMaxIndex();\n }\n if(arg1._op === 'isTop') {\n buffer.first++;\n }\n else {\n buffer.next--;\n }\n if(!buffer.length) {\n buffer.first = buffer.minIndex%1 ? buffer.minIndex : startIndex;\n buffer.next = buffer.first;\n buffer.eof = buffer.eof && buffer.first==buffer.maxIndex;\n }\n\n return elementRoutines.removeElementAnimated(arg1);\n },\n\n incrementMinIndex() {\n if(buffer.minIndexUser !== null) {\n if(buffer.minIndex > buffer.minIndexUser) {\n buffer.minIndexUser++;\n return;\n }\n if(buffer.minIndex === buffer.minIndexUser) {\n buffer.minIndexUser++;\n }\n }\n buffer.minIndex++;\n },\n\n decrementMaxIndex() {\n if(buffer.maxIndexUser !== null && buffer.maxIndex <= buffer.maxIndexUser) {\n buffer.maxIndexUser--;\n }\n buffer.maxIndex--;\n },\n\n getAbsMinIndex() {\n if(buffer.minIndexUser !== null) {\n return Math.min(buffer.minIndexUser, buffer.minIndex);\n }\n return buffer.minIndex;\n },\n\n getAbsMaxIndex() {\n if(buffer.maxIndexUser !== null) {\n return Math.max(buffer.maxIndexUser, buffer.maxIndex);\n }\n return buffer.maxIndex;\n },\n\n effectiveHeight(elements) {\n if (!elements.length) {\n return 0;\n }\n let top = Number.MAX_VALUE;\n let bottom = Number.NEGATIVE_INFINITY;\n elements.forEach((wrapper) => {\n if (wrapper.element[0].offsetParent) {\n // element style is not display:none\n top = Math.min(top, wrapper.element.offset().top);\n bottom = Math.max(bottom, wrapper.element.offset().top + (rowHeight || wrapper.element.outerHeight(true)));\n }\n });\n return Math.max(0, bottom - top);\n },\n\n getItems() {\n return buffer.filter(item => item.op === 'none');\n },\n\n getFirstItem() {\n const list = buffer.getItems();\n if (!list.length) {\n return null;\n }\n return list[0].item;\n },\n\n getLastItem() {\n const list = buffer.getItems();\n if (!list.length) {\n return null;\n }\n return list[list.length - 1].item;\n }\n\n });\n\n buffer.reset(startIndex);\n\n return buffer;\n}\n","// Can't just extend the Array, due to Babel does not support built-in classes extending\n// This solution was taken from https://stackoverflow.com/questions/46897414/es6-class-extends-array-workaround-for-es5-babel-transpile\nclass CacheProto {\n add(item) {\n for (let i = this.length - 1; i >= 0; i--) {\n if (this[i].index === item.scope.$index) {\n this[i].height = item.element.outerHeight();\n return;\n }\n }\n this.push({\n index: item.scope.$index,\n height: item.element.outerHeight()\n });\n this.sort((a, b) => ((a.index < b.index) ? -1 : ((a.index > b.index) ? 1 : 0)));\n }\n\n remove(argument, _isTop) {\n const index = argument % 1 === 0 ? argument : argument.scope.$index;\n const isTop = argument % 1 === 0 ? _isTop : argument._op === 'isTop';\n for (let i = this.length - 1; i >= 0; i--) {\n if (this[i].index === index) {\n this.splice(i, 1);\n break;\n }\n }\n if(!isTop) {\n for (let i = this.length - 1; i >= 0; i--) {\n if (this[i].index > index) {\n this[i].index--;\n }\n }\n }\n }\n\n clear() {\n this.length = 0;\n }\n}\n\nfunction Cache() {\n const instance = [];\n instance.push.apply(instance, arguments);\n Object.setPrototypeOf(instance, Cache.prototype);\n return instance;\n}\nCache.prototype = Object.create(Array.prototype);\nObject.getOwnPropertyNames(CacheProto.prototype).forEach(methodName =>\n Cache.prototype[methodName] = CacheProto.prototype[methodName]\n);\n\nfunction generateElement(template) {\n if(template.nodeType !== Node.ELEMENT_NODE) {\n throw new Error('ui-scroll directive requires an Element node for templating the view');\n }\n let element;\n switch (template.tagName.toLowerCase()) {\n case 'dl':\n throw new Error(`ui-scroll directive does not support <${template.tagName}> as a repeating tag: ${template.outerHTML}`);\n case 'tr':\n let table = angular.element('
    ');\n element = table.find('tr');\n break;\n case 'li':\n element = angular.element('
  • ');\n break;\n default:\n element = angular.element('
    ');\n }\n return element;\n}\n\n//\n// Padding represents the dummy element added to both the top and the bottom of the scrolling container\n// It holds the element, as well as a cache for the items (rows) height. In case of a fixed rowHeight, the \n// cache is not used and thus is not created.\n//\nclass Padding {\n constructor(template,useCache) {\n this.element = generateElement(template);\n if(useCache) {\n this.cache = new Cache();\n }\n }\n\n height() {\n // When called with a parameter, this sets the height of the padding\n return this.element.height.apply(this.element, arguments);\n }\n}\n\nexport default Padding;","import Padding from './padding';\n\nexport default function Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding, rowHeight) {\n let topPadding = null;\n let bottomPadding = null;\n const viewport = viewportController && viewportController.viewport ? viewportController.viewport : angular.element(window);\n const container = viewportController && viewportController.container ? viewportController.container : undefined;\n const scope = viewportController && viewportController.scope ? viewportController.scope : $rootScope;\n\n viewport.css({\n 'overflow-anchor': 'none',\n 'overflow-y': 'auto',\n 'display': 'block'\n });\n\n function bufferPadding() {\n return viewport.outerHeight() * padding; // some extra space to initiate preload\n }\n\n // \n // Viewport measurements\n //\n // +----------------+ 0\n // | top |\n // | padding |\n // +----------------+ topDataPos() [=topPadding.height]\n // | not visible |\n // | items |\n // +----------------+ topVisiblePos() [=viewport.scrollTop]\n // | |\n // | visible |\n // | items |\n // | |\n // +----------------+ bottomVisiblePos() [=viewport.scrollTop+viewport.height]\n // | not visible |\n // | items |\n // +----------------+ bottomDataPos() [=scrollHeight-bottomPadding.height]\n // | bottom |\n // | padding |\n // +----------------+ scrollHeight \n //\n // bufferPadding is some extra space we have top & bottom to allow infinite scrolling\n // bufferPadding = viewport.outerHeight() * padding\n //\n // bottomVisiblePos() - topVisiblePos() == viewport.outerHeight()\n \n\n angular.extend(viewport, {\n getScope() {\n return scope;\n },\n\n createPaddingElements(template) {\n topPadding = new Padding(template,!rowHeight);\n bottomPadding = new Padding(template,!rowHeight);\n element.before(topPadding.element);\n element.after(bottomPadding.element);\n topPadding.height(0);\n bottomPadding.height(0);\n },\n\n applyContainerStyle() {\n if (!container) {\n return true;\n }\n if(container !== viewport) {\n viewport.css('height', window.getComputedStyle(container[0]).height);\n }\n return viewport.height() > 0;\n },\n\n bottomDataPos() {\n let scrollHeight = viewport[0].scrollHeight;\n scrollHeight = scrollHeight != null ? scrollHeight : viewport[0].document.documentElement.scrollHeight;\n return scrollHeight - bottomPadding.height();\n },\n\n topDataPos() {\n return topPadding.height();\n },\n\n bottomVisiblePos() {\n return viewport.scrollTop() + viewport.outerHeight();\n },\n\n topVisiblePos() {\n return viewport.scrollTop();\n },\n\n insertElement(e, sibling) {\n return elementRoutines.insertElement(e, sibling || topPadding.element);\n },\n\n insertElementAnimated(e, sibling) {\n return elementRoutines.insertElementAnimated(e, sibling || topPadding.element);\n },\n\n shouldLoadBottom() {\n return !buffer.eof && viewport.bottomDataPos() < viewport.bottomVisiblePos() + bufferPadding();\n },\n\n clipBottom() {\n // clip the invisible items off the bottom\n let overage = 0;\n let emptySpaceHeight = viewport.bottomDataPos() - viewport.bottomVisiblePos() - bufferPadding();\n if(rowHeight) {\n overage = Math.min(buffer.length,Math.floor(emptySpaceHeight/rowHeight));\n } else {\n let itemHeight = 0;\n let overageHeight = 0;\n\n for (let i = buffer.length - 1; i >= 0; i--) {\n itemHeight = buffer[i].element.outerHeight(true);\n if (overageHeight + itemHeight > emptySpaceHeight) {\n break;\n }\n bottomPadding.cache.add(buffer[i]);\n overageHeight += itemHeight;\n overage++;\n }\n }\n\n if (overage > 0) {\n buffer.eof = false;\n buffer.remove(buffer.length - overage, buffer.length);\n buffer.next -= overage;\n viewport.adjustPaddings();\n }\n },\n\n shouldLoadTop() {\n return !buffer.bof && (viewport.topDataPos() > viewport.topVisiblePos() - bufferPadding());\n },\n\n clipTop() {\n // clip the invisible items off the top\n let overage = 0;\n let overageHeight = 0;\n let emptySpaceHeight = viewport.topVisiblePos() - viewport.topDataPos() - bufferPadding();\n if(rowHeight) {\n overage = Math.min(buffer.length,Math.floor(emptySpaceHeight/rowHeight));\n overageHeight = overage * rowHeight;\n } else {\n let itemHeight = 0;\n\n for (let i = 0; i < buffer.length; i++) {\n itemHeight = buffer[i].element.outerHeight(true);\n if (overageHeight + itemHeight > emptySpaceHeight) {\n break;\n }\n topPadding.cache.add(buffer[i]);\n overageHeight += itemHeight;\n overage++;\n }\n }\n\n if (overage > 0) {\n // we need to adjust top padding element before items are removed from top\n // to avoid strange behaviour of scroll bar during remove top items when we are at the very bottom\n topPadding.height(topPadding.height() + overageHeight);\n buffer.bof = false;\n buffer.remove(0, overage);\n buffer.first += overage;\n }\n },\n\n // PHIL: remove all the entries in the buffer without changing the scrollbar, nor the scroll position\n // and update the padding accordingly\n // It is designed to work with non fixed rowHeight, although it will need more tests in this area...\n scrollTo(first) {\n if(rowHeight) {\n const min = buffer.getAbsMinIndex(); \n const max = buffer.getAbsMaxIndex();\n first = Math.min(Math.max(first, min),max);\n // Adjust the paddings before removing the elements to avoid touching the scroll top position\n topPadding.height((first-min)*rowHeight);\n bottomPadding.height(((max+1)-first)*rowHeight);\n buffer.resetStartIndex(first);\n } else {\n buffer.resetStartIndex(first);\n viewport.adjustPaddings();\n } \n },\n \n adjustPaddings() {\n if(rowHeight) {\n const min = buffer.getAbsMinIndex(); \n const max = buffer.getAbsMaxIndex();\n topPadding.height((buffer.first-min)*rowHeight);\n // PHIL: next points to the next possible item, while max is the index of the last one.\n // In order to make them compatible, we should add one to max\n // Also, it looks like buffer is not changing maxIndex when an element is inserted/appended\n // Not sure if this can have a consequence or not....\n bottomPadding.height(((max+1)-buffer.next)*rowHeight);\n return;\n }\n\n if (!buffer.length) {\n return;\n }\n\n // precise heights calculation based on items that are in buffer or that were in buffer once\n const visibleItemsHeight = buffer.reduce((summ, item) => summ + item.element.outerHeight(true), 0);\n let topPaddingHeight = 0, topCount = 0;\n topPadding.cache.forEach(item => {\n if(item.index < buffer.first) {\n topPaddingHeight += item.height;\n topCount++;\n }\n });\n \n let bottomPaddingHeight = 0, bottomCount = 0;\n bottomPadding.cache.forEach(item => {\n if(item.index >= buffer.next) {\n bottomPaddingHeight += item.height;\n bottomCount++;\n }\n });\n \n const totalHeight = visibleItemsHeight + topPaddingHeight + bottomPaddingHeight;\n const averageItemHeight = totalHeight / (topCount + bottomCount + buffer.length); \n\n // average heights calculation, items that have never been reached\n let adjustTopPadding = buffer.minIndexUser !== null && buffer.minIndex > buffer.minIndexUser;\n let adjustBottomPadding = buffer.maxIndexUser !== null && buffer.maxIndex < buffer.maxIndexUser;\n let topPaddingHeightAdd = adjustTopPadding ? (buffer.minIndex - buffer.minIndexUser) * averageItemHeight : 0;\n let bottomPaddingHeightAdd = adjustBottomPadding ? (buffer.maxIndexUser - buffer.maxIndex) * averageItemHeight : 0;\n\n // paddings combine adjustment\n topPadding.height(topPaddingHeight + topPaddingHeightAdd);\n bottomPadding.height(bottomPaddingHeight + bottomPaddingHeightAdd);\n },\n\n onAfterMinIndexSet(topPaddingHeightOld) {\n // additional scrollTop adjustment in case of datasource.minIndex external set\n if (buffer.minIndexUser !== null && buffer.minIndex > buffer.minIndexUser) {\n let diff = topPadding.height() - topPaddingHeightOld;\n viewport.scrollTop(viewport.scrollTop() + diff);\n while((diff -= viewport.scrollTop()) > 0) {\n bottomPadding.height(bottomPadding.height() + diff);\n viewport.scrollTop(viewport.scrollTop() + diff);\n }\n }\n },\n\n onAfterPrepend(updates) {\n if (!updates.prepended.length)\n return;\n const height = buffer.effectiveHeight(updates.prepended);\n const paddingHeight = topPadding.height() - height;\n if (paddingHeight >= 0) {\n topPadding.height(paddingHeight);\n }\n else {\n topPadding.height(0);\n viewport.scrollTop(viewport.scrollTop() - paddingHeight);\n }\n },\n\n resetTopPadding() {\n topPadding.height(0);\n if(topPadding.cache) {\n topPadding.cache.clear();\n }\n },\n\n resetBottomPadding() {\n bottomPadding.height(0);\n if(bottomPadding.cache) {\n bottomPadding.cache.clear();\n }\n },\n\n removeCacheItem(item, isTop) {\n if(topPadding.cache) {\n topPadding.cache.remove(item, isTop);\n }\n if(bottomPadding.cache) {\n bottomPadding.cache.remove(item, isTop);\n }\n },\n\n removeItem(item) {\n this.removeCacheItem(item);\n return buffer.remove(item);\n }\n });\n\n return viewport;\n}\n","class Adapter {\n\n constructor($scope, $parse, $attr, viewport, buffer, doAdjust, reload) {\n this.$parse = $parse;\n this.$attr = $attr;\n this.viewport = viewport;\n this.buffer = buffer;\n\n this.doAdjust = doAdjust;\n this.reload = reload;\n\n this.isLoading = false;\n this.disabled = false;\n\n const viewportScope = viewport.getScope();\n this.startScope = viewportScope.$parent ? viewportScope : $scope;\n\n this.publicContext = {};\n this.assignAdapter($attr.adapter);\n this.generatePublicContext();\n }\n\n assignAdapter(adapterAttr) {\n if (!adapterAttr || !(adapterAttr = adapterAttr.replace(/^\\s+|\\s+$/gm, ''))) {\n return;\n }\n let adapterOnScope;\n\n try {\n this.$parse(adapterAttr).assign(this.startScope, {});\n adapterOnScope = this.$parse(adapterAttr)(this.startScope);\n }\n catch (error) {\n error.message = `Angular ui-scroll Adapter assignment exception.\\n` +\n `Can't parse \"${adapterAttr}\" expression.\\n` +\n error.message;\n throw error;\n }\n\n angular.extend(adapterOnScope, this.publicContext);\n this.publicContext = adapterOnScope;\n }\n\n generatePublicContext() {\n // these methods will be accessible out of ui-scroll via user defined adapter\n const publicMethods = ['reload', 'applyUpdates', 'append', 'prepend', 'isBOF', 'isEOF', 'isEmpty'];\n for (let i = publicMethods.length - 1; i >= 0; i--) {\n this.publicContext[publicMethods[i]] = this[publicMethods[i]].bind(this);\n }\n\n // these read-only props will be accessible out of ui-scroll via user defined adapter\n const publicProps = ['isLoading', 'topVisible', 'topVisibleElement', 'topVisibleScope', 'bottomVisible', 'bottomVisibleElement', 'bottomVisibleScope'];\n for (let i = publicProps.length - 1; i >= 0; i--) {\n let property, attr = this.$attr[publicProps[i]];\n Object.defineProperty(this, publicProps[i], {\n get: () => property,\n set: (value) => {\n property = value;\n this.publicContext[publicProps[i]] = value;\n if (attr) {\n this.$parse(attr).assign(this.startScope, value);\n }\n }\n });\n }\n\n // read-only immediately calculated public properties\n const publicPropsImmediate = ['bufferFirst', 'bufferLast', 'bufferLength'];\n for (let i = publicPropsImmediate.length - 1; i >= 0; i--) {\n Object.defineProperty(this.publicContext, publicPropsImmediate[i], {\n get: () => this[publicPropsImmediate[i]]\n });\n }\n\n // non-read-only public property\n Object.defineProperty(this.publicContext, 'disabled', {\n get: () => this.disabled,\n set: (value) => (!(this.disabled = value)) ? this.doAdjust() : null\n });\n }\n\n loading(value) {\n this.isLoading = value;\n }\n\n isBOF() {\n return this.buffer.bof;\n }\n\n isEOF() {\n return this.buffer.eof;\n }\n\n isEmpty() {\n return !this.buffer.length;\n }\n\n get bufferLength() {\n return this.buffer.getItems().length;\n }\n\n get bufferFirst() {\n return this.buffer.getFirstItem();\n }\n\n get bufferLast() {\n return this.buffer.getLastItem();\n }\n\n append(newItems) {\n this.buffer.append(newItems);\n this.doAdjust();\n this.viewport.clipTop();\n this.viewport.clipBottom();\n }\n\n prepend(newItems) {\n this.buffer.prepend(newItems);\n this.doAdjust();\n this.viewport.clipTop();\n this.viewport.clipBottom();\n }\n\n applyUpdates(arg1, arg2, arg3) {\n if (typeof arg1 === 'function') {\n this.applyUpdatesFunc(arg1, arg2);\n if(arg2 && arg2.noAdjust) return;\n } else {\n this.applyUpdatesIndex(arg1, arg2, arg3);\n if(arg3 && arg3.noAdjust) return;\n }\n this.doAdjust();\n }\n\n applyUpdatesFunc(cb, options) {\n this.buffer.slice(0).forEach((wrapper) => {\n // we need to do it on the buffer clone, because buffer content\n // may change as we iterate through\n this.applyUpdate(wrapper, cb(wrapper.item, wrapper.scope, wrapper.element), options);\n });\n }\n\n applyUpdatesIndex(index, newItems, options = {}) {\n if (index % 1 !== 0) {\n throw new Error('applyUpdates - ' + index + ' is not a valid index (should be an integer)');\n }\n const _index = index - this.buffer.first;\n\n // apply updates only within buffer\n if (_index >= 0 && _index < this.buffer.length) {\n this.applyUpdate(this.buffer[_index], newItems, options);\n }\n // out-of-buffer case: deletion may affect Paddings\n else if(index >= this.buffer.getAbsMinIndex() && index <= this.buffer.getAbsMaxIndex()) {\n if(angular.isArray(newItems) && !newItems.length) {\n this.viewport.removeCacheItem(index, !options.immutableTop && index === this.buffer.minIndex);\n if (!options.immutableTop && index === this.buffer.getAbsMinIndex()) {\n this.buffer.incrementMinIndex();\n }\n else {\n this.buffer.decrementMaxIndex();\n }\n }\n }\n }\n\n applyUpdate(wrapper, newItems, options = {}) {\n if (!angular.isArray(newItems)) {\n return;\n }\n let position = this.buffer.indexOf(wrapper);\n if (!newItems.reverse().some(newItem => newItem === wrapper.item)) {\n wrapper.op = 'remove';\n if (!options.immutableTop && position === 0 && !newItems.length) {\n wrapper._op = 'isTop'; // to catch \"first\" edge case on remove\n }\n }\n newItems.forEach((newItem) => {\n if (newItem === wrapper.item) {\n position--;\n } else {\n // 3 parameter (isTop) is to catch \"first\" edge case on insert\n this.buffer.insert(position + 1, newItem, !options.immutableTop && position === -1);\n }\n });\n }\n\n calculateProperties() {\n let rowTop = null, topHeight = 0;\n let topDone = false, bottomDone = false;\n const length = this.buffer.length;\n\n for (let i = 0; i < length; i++) {\n const item = this.buffer[i];\n const itemTop = item.element.offset().top;\n\n if (rowTop !== itemTop) { // a new row condition\n const itemHeight = item.element.outerHeight(true);\n const top = this.viewport.topDataPos() + topHeight + itemHeight;\n\n if (!topDone && top > this.viewport.topVisiblePos()) {\n topDone = true;\n this['topVisible'] = item.item;\n this['topVisibleElement'] = item.element;\n this['topVisibleScope'] = item.scope;\n }\n if (!bottomDone && (top >= this.viewport.bottomVisiblePos() || (i === length - 1 && this.isEOF()))) {\n bottomDone = true;\n this['bottomVisible'] = item.item;\n this['bottomVisibleElement'] = item.element;\n this['bottomVisibleScope'] = item.scope;\n }\n topHeight += itemHeight;\n }\n rowTop = itemTop;\n\n if (topDone && bottomDone) {\n break;\n }\n }\n }\n\n}\n\nexport default Adapter;\n","import JQLiteExtras from './modules/jqLiteExtras';\nimport ElementRoutines from './modules/elementRoutines.js';\nimport ScrollBuffer from './modules/buffer.js';\nimport Viewport from './modules/viewport.js';\nimport Adapter from './modules/adapter.js';\n\nangular.module('ui.scroll', [])\n\n .constant('JQLiteExtras', JQLiteExtras)\n .run(['JQLiteExtras', (JQLiteExtras) => {\n const elt = angular.element;\n !(window.jQuery && elt.fn && elt.fn.jquery) ? (new JQLiteExtras()).registerFor(elt) : null;\n ElementRoutines.addCSSRules();\n }])\n\n .directive('uiScrollViewport', function () {\n return {\n restrict: 'A',\n controller: [\n '$scope',\n '$element',\n function (scope, element) {\n this.container = element;\n this.viewport = element;\n this.scope = scope;\n\n angular.forEach(element.children(), child => {\n if (child.tagName.toLowerCase() === 'tbody') {\n this.viewport = angular.element(child);\n }\n });\n\n return this;\n }\n ]\n };\n })\n\n .directive('uiScroll', [\n '$log',\n '$injector',\n '$rootScope',\n '$timeout',\n '$interval',\n '$q',\n '$parse',\n function (console, $injector, $rootScope, $timeout, $interval, $q, $parse) {\n\n return {\n require: ['?^uiScrollViewport'],\n restrict: 'A',\n transclude: 'element',\n priority: 1000,\n terminal: true,\n link: link\n };\n\n function link($scope, element, $attr, controllers, linker) {\n const match = $attr.uiScroll.match(/^\\s*(\\w+)\\s+in\\s+([(\\w|\\$)\\.]+)\\s*$/);\n if (!match) {\n throw new Error('Expected uiScroll in form of \\'_item_ in _datasource_\\' but got \\'' + $attr.uiScroll + '\\'');\n }\n\n function parseNumber(value, defaultValue, isFloat) {\n if (!isFloat) {\n value = value === null ? defaultValue : Math.floor(value);\n }\n return isNaN(value) ? defaultValue : value;\n }\n\n function parseNumericAttr(value, defaultValue, isFloat) {\n const result = $parse(value)($scope);\n return parseNumber(result, defaultValue, isFloat);\n }\n\n const BUFFER_MIN = 3; // Minimum size of the data source request\n const BUFFER_DEFAULT = 10; // Default datasource request size\n const PADDING_MIN = 0.3; // Mininum # of rows in the padding area\n const PADDING_DEFAULT = 0.5; // Default # of rows in the padding area\n const START_INDEX_DEFAULT = 1; // Default start index when requestng the first data block\n const MAX_VIEWPORT_DELAY = 500; // Max time wait (ms) to get the viewport with an height>0\n const VIEWPORT_POLLING_INTERVAL = 50; // Interval used to check the initial viewport height\n\n let datasource = null;\n const itemName = match[1]; // Name of the index variable to publish\n const datasourceName = match[2]; // Name of the datasource to request the rows from\n const viewportController = controllers[0]; // ViewportController, as specified in the require option (http://websystique.com/angularjs/angularjs-custom-directives-controllers-require-option-guide/)\n const bufferSize = Math.max(BUFFER_MIN, parseNumericAttr($attr.bufferSize, BUFFER_DEFAULT)); \n const padding = Math.max(PADDING_MIN, parseNumericAttr($attr.padding, PADDING_DEFAULT, true));\n let startIndex = parseNumericAttr($attr.startIndex, START_INDEX_DEFAULT);\n\n // PHIL: Provide a fixed row height\n // \n const rowHeight = parseNumericAttr($attr.rowHeight, null, false);\n\n // PHIL: Read the visibility watch option, true by default\n const allowVisibilityWatch = $attr.allowVisibilityWatch!=='false';\n\n // Revision IDs\n // \n let ridActual = 0; // current data revision id\n let pending = [];\n\n const elementRoutines = new ElementRoutines($injector, $q);\n const buffer = new ScrollBuffer(elementRoutines, bufferSize, startIndex, rowHeight);\n const viewport = new Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding, rowHeight);\n const adapter = new Adapter($scope, $parse, $attr, viewport, buffer, doAdjust, reload);\n\n if (viewportController) {\n viewportController.adapter = adapter;\n }\n\n // Currently, we only debounce the scroll events when a fixed rowHeight is provided\n // as the unit tests will have to be adapted to support this feature\n let scPreviousScrollTop=-1;\n\n const isDatasourceValid = () =>\n Object.prototype.toString.call(datasource) === '[object Object]' && typeof datasource.get === 'function';\n\n datasource = $parse(datasourceName)($scope); // try to get datasource on scope\n if (!isDatasourceValid()) {\n datasource = $injector.get(datasourceName); // try to inject datasource as service\n if (!isDatasourceValid()) {\n throw new Error(datasourceName + ' is not a valid datasource');\n }\n }\n\n let onRenderHandlers = [];\n function onRenderHandlersRunner() {\n onRenderHandlers.forEach(handler => handler.run());\n onRenderHandlers = [];\n }\n function persistDatasourceIndex(datasource, propName) {\n let getter;\n // need to postpone min/maxIndexUser processing if the view is empty\n if(angular.isNumber(datasource[propName])) {\n getter = datasource[propName];\n if(angular.isNumber(getter)) {\n onRenderHandlers = onRenderHandlers.filter(handler => handler.id !== propName);\n onRenderHandlers.push({\n id: propName,\n run: () => datasource[propName] = getter\n });\n }\n }\n }\n\n function defineDatasourceIndex(datasource, propName, propUserName) {\n const descriptor = Object.getOwnPropertyDescriptor(datasource, propName);\n if (descriptor && (descriptor.set || descriptor.get)) {\n return;\n }\n let getter;\n persistDatasourceIndex(datasource, propName);\n Object.defineProperty(datasource, propName, {\n set: (value) => {\n getter = value;\n if(pending.length && !buffer.length) {\n persistDatasourceIndex(datasource, propName);\n return;\n }\n buffer[propUserName] = value;\n const topPaddingHeightOld = viewport.topDataPos();\n viewport.adjustPaddings();\n if (propName === 'minIndex') {\n viewport.onAfterMinIndexSet(topPaddingHeightOld);\n }\n },\n get: () => getter\n });\n }\n\n defineDatasourceIndex(datasource, 'minIndex', 'minIndexUser');\n defineDatasourceIndex(datasource, 'maxIndex', 'maxIndexUser');\n\n const fetchNext = (datasource.get.length !== 2) ?\n (success) => datasource.get(buffer.next, bufferSize, success) :\n (success) => {\n datasource.get({\n index: buffer.next,\n append: buffer.length ? buffer[buffer.length - 1].item : void 0,\n count: bufferSize\n }, success);\n };\n\n const fetchPrevious = (datasource.get.length !== 2) ?\n (success) => datasource.get(buffer.first - bufferSize, bufferSize, success) :\n (success) => {\n datasource.get({\n index: buffer.first - bufferSize,\n prepend: buffer.length ? buffer[0].item : void 0,\n count: bufferSize\n }, success);\n };\n\n const initialize = () => {\n let tryCount = 0;\n if(!viewport.applyContainerStyle()) {\n const timer = $interval(() => {\n tryCount++;\n if(viewport.applyContainerStyle()) {\n $interval.cancel(timer);\n doAdjust();\n }\n if(tryCount * VIEWPORT_POLLING_INTERVAL >= MAX_VIEWPORT_DELAY) {\n $interval.cancel(timer);\n throw Error(`ui-scroll directive requires a viewport with non-zero height in ${MAX_VIEWPORT_DELAY}ms`);\n }\n }, VIEWPORT_POLLING_INTERVAL);\n }\n else {\n doAdjust();\n }\n };\n\n /**\n * Build padding elements\n *\n * Calling linker is the only way I found to get access to the tag name of the template\n * to prevent the directive scope from pollution a new scope is created and destroyed\n * right after the builder creation is completed\n */\n linker((clone, scope) => {\n viewport.createPaddingElements(clone[0]);\n // we do not include the clone in the DOM. It means that the nested directives will not\n // be able to reach the parent directives, but in this case it is intentional because we\n // created the clone to access the template tag name\n scope.$destroy();\n clone.remove();\n });\n\n $scope.$on('$destroy', () => {\n unbindEvents();\n viewport.unbind('mousewheel', wheelHandler);\n });\n\n viewport.bind('mousewheel', wheelHandler);\n\n initialize();\n\n /* Private function definitions */\n\n function isInvalid(rid) {\n return (rid && rid !== ridActual) || $scope.$$destroyed;\n }\n\n function bindEvents() {\n viewport.bind('resize', resizeAndScrollHandler);\n viewport.bind('scroll', resizeAndScrollHandler);\n // If a scroll event happened while the handler was not bounded, emit the scroll\n if(isPendingScroll()) {\n // Do it immediately\n _resizeAndScrollHandler();\n }\n }\n\n function unbindEvents() {\n viewport.unbind('resize', resizeAndScrollHandler);\n viewport.unbind('scroll', resizeAndScrollHandler);\n }\n\n function reload() {\n unbindEvents();\n viewport.resetTopPadding();\n viewport.resetBottomPadding();\n if (arguments.length) {\n startIndex = parseNumber(arguments[0], START_INDEX_DEFAULT, false);\n }\n buffer.reset(startIndex);\n scPreviousScrollTop = -1; // Avoid isScrollPending() to be true\n persistDatasourceIndex(datasource, 'minIndex');\n persistDatasourceIndex(datasource, 'maxIndex');\n doAdjust();\n }\n\n function scrollTo(first) {\n unbindEvents();\n viewport.scrollTo(first);\n doAdjust();\n }\n\n function isElementVisible(wrapper) {\n return (rowHeight || wrapper.element.height()) && wrapper.element[0].offsetParent;\n }\n\n function visibilityWatcher(wrapper) {\n if (isElementVisible(wrapper)) {\n buffer.forEach((item) => {\n if (typeof item.unregisterVisibilityWatcher === 'function') {\n item.unregisterVisibilityWatcher();\n delete item.unregisterVisibilityWatcher;\n }\n });\n if (!pending.length) {\n $timeout(() => doAdjust());\n }\n }\n }\n\n function insertWrapperContent(wrapper, insertAfter) {\n createElement(wrapper, insertAfter, viewport.insertElement);\n if (allowVisibilityWatch && !isElementVisible(wrapper)) {\n wrapper.unregisterVisibilityWatcher = wrapper.scope.$watch(() => visibilityWatcher(wrapper));\n }\n if (allowVisibilityWatch) {\n elementRoutines.hideElement(wrapper); // hide inserted elements before data binding\n }\n }\n\n function createElement(wrapper, insertAfter, insertElement) {\n let promises = null;\n const sibling = (insertAfter > 0) ? buffer[insertAfter - 1].element : undefined;\n linker((clone, scope) => {\n promises = insertElement(clone, sibling);\n wrapper.element = clone;\n wrapper.scope = scope;\n scope[itemName] = wrapper.item;\n });\n // ui-scroll-grid apply\n if (adapter.transform) {\n const tdInitializer = wrapper.scope.uiScrollTdInitializer;\n if (tdInitializer && tdInitializer.linking) {\n adapter.transform(wrapper.scope, wrapper.element);\n } else {\n wrapper.scope.uiScrollTdInitializer = {\n onLink: () => adapter.transform(wrapper.scope, wrapper.element),\n scope: wrapper.scope\n };\n }\n }\n return promises;\n }\n\n function updateDOM() {\n let promises = [];\n const toBePrepended = [];\n const toBeRemoved = [];\n const inserted = [];\n\n buffer.forEach((wrapper, i) => {\n switch (wrapper.op) {\n case 'prepend':\n toBePrepended.unshift(wrapper);\n break;\n case 'append':\n insertWrapperContent(wrapper, i);\n wrapper.op = 'none';\n inserted.push(wrapper);\n break;\n case 'insert':\n promises = promises.concat(createElement(wrapper, i, viewport.insertElementAnimated));\n wrapper.op = 'none';\n inserted.push(wrapper);\n break;\n case 'remove':\n toBeRemoved.push(wrapper);\n }\n });\n\n toBeRemoved.forEach((wrapper) => promises = promises.concat(viewport.removeItem(wrapper)));\n\n if (toBePrepended.length)\n toBePrepended.forEach((wrapper) => {\n insertWrapperContent(wrapper);\n wrapper.op = 'none';\n });\n\n buffer.forEach((item, i) => item.scope.$index = buffer.first + i);\n\n return {\n prepended: toBePrepended,\n removed: toBeRemoved,\n inserted: inserted,\n animated: promises\n };\n\n }\n\n // Adjust the viewport paddings\n // \n function updatePaddings(rid, updates) {\n // schedule another doAdjust after animation completion\n if (updates.animated.length) {\n $q.all(updates.animated).then(() => {\n viewport.adjustPaddings();\n doAdjust(rid);\n });\n } else {\n viewport.adjustPaddings();\n }\n }\n\n function enqueueFetch(rid, updates) {\n // If there is a scroll pending, we don't enqueue the fetch as the scroll might be an absolute scroll\n // So we don't need to load top or bottom\n // This happens when there is a scroll frenzi, and the $digest is slow enough, so it stacks the calls without\n // giving a chance to the scroll event to be emitted and processed.\n // We also do that if it leads to an absolute scroll\n if(isPendingScroll() && calculateAbsoluteScroll()!==undefined) {\n // Looks like the event is swallowed on some browsers (FF) on some scroll configuration\n resizeAndScrollHandler();\n return;\n }\n\n if (viewport.shouldLoadBottom()) {\n if (!updates || buffer.effectiveHeight(updates.inserted) > 0) {\n // this means that at least one item appended in the last batch has height > 0\n if (pending.push(true) === 1) {\n adapter.loading(true);\n fetch(rid);\n }\n }\n } else if (viewport.shouldLoadTop()) {\n if ((!updates || buffer.effectiveHeight(updates.prepended) > 0) || pending[0]) {\n // this means that at least one item appended in the last batch has height > 0\n // pending[0] = true means that previous fetch was appending. We need to force at least one prepend\n // BTW there will always be at least 1 element in the pending array because bottom is fetched first\n if (pending.push(false) === 1) {\n adapter.loading(true);\n fetch(rid);\n }\n }\n }\n }\n\n function processUpdates() {\n const updates = updateDOM();\n\n // We need the item bindings to be processed before we can do adjustments\n // If there are no changes and the row-height is static, then ignore it!\n const changes = updates.animated.length+updates.inserted.length+updates.prepended.length+updates.removed.length;\n if(changes || !rowHeight) {\n !$scope.$$phase && !$rootScope.$$phase && $scope.$digest();\n }\n\n if (allowVisibilityWatch) {\n updates.inserted.forEach(w => elementRoutines.showElement(w));\n updates.prepended.forEach(w => elementRoutines.showElement(w));\n }\n\n return updates;\n }\n\n function doAdjust(rid) {\n if (!rid) { // dismiss pending requests\n pending = [];\n rid = ++ridActual;\n }\n\n const updates = processUpdates();\n\n if (isInvalid(rid)) {\n return;\n }\n\n updatePaddings(rid, updates);\n enqueueFetch(rid);\n\n if (!pending.length) {\n adapter.calculateProperties();\n }\n }\n\n function doAdjustAfterFetch(rid) {\n const updates = processUpdates();\n\n viewport.onAfterPrepend(updates);\n\n if (isInvalid(rid)) {\n return;\n }\n\n updatePaddings(rid, updates);\n onRenderHandlersRunner();\n enqueueFetch(rid, updates);\n pending.shift();\n\n if (pending.length)\n fetch(rid);\n else {\n adapter.loading(false);\n bindEvents();\n adapter.calculateProperties();\n }\n }\n\n function fetch(rid) {\n if (pending[0]) {// scrolling down\n if (buffer.length && !viewport.shouldLoadBottom()) {\n doAdjustAfterFetch(rid);\n } else {\n fetchNext((result) => {\n if (isInvalid(rid)) {\n return;\n }\n\n if (result.length < bufferSize) {\n buffer.eof = true;\n }\n\n if (result.length > 0) {\n viewport.clipTop();\n buffer.append(result);\n }\n\n doAdjustAfterFetch(rid);\n });\n }\n } else { // scrolling up\n if (buffer.length && !viewport.shouldLoadTop()) {\n doAdjustAfterFetch(rid);\n } else {\n fetchPrevious((result) => {\n if (isInvalid(rid)) {\n return;\n }\n\n if (result.length < bufferSize) {\n buffer.bof = true;\n // log 'bof is reached'\n }\n\n if (result.length > 0) {\n if (buffer.length) {\n viewport.clipBottom();\n }\n buffer.prepend(result);\n }\n\n doAdjustAfterFetch(rid);\n });\n }\n }\n }\n\n function isPendingScroll() {\n if(rowHeight) {\n // Maybe the scroll changed but the event has *not* yet being dispatched\n // because of the $digest running and taking to long\n var sc = viewport.scrollTop();\n if(sc!=scPreviousScrollTop && scPreviousScrollTop>=0) {\n return true;\n }\n }\n return false;\n }\n\n // Deboucing the scroll events avois intermediate $digest when scrolling fast\n let scTimer;\n function resizeAndScrollHandler() {\n if (rowHeight) {\n if (scTimer) clearTimeout(scTimer);\n scTimer = setTimeout(_resizeAndScrollHandler, 50);\n } else {\n _resizeAndScrollHandler();\n }\n }\n\n function _resizeAndScrollHandler() {\n if (!$rootScope.$$phase && !adapter.isLoading && !adapter.disabled) {\n // Absolute positioning currently only works when a fixed rowHeight is provided\n // We might isolate the averegaRowHeight calculation in the viewport to provide an estimate\n // and provide a reasonable behavior with variable height as well\n if(rowHeight) {\n const newFirst = calculateAbsoluteScroll();\n if(newFirst!==undefined) {\n scrollTo(newFirst);\n return;\n }\n }\n\n enqueueFetch(ridActual);\n\n if (pending.length) {\n unbindEvents();\n } else {\n adapter.calculateProperties();\n if(!rowHeight) {\n // The digest is forced to calculate the height, which is not necessary when the height is knowm\n !$scope.$$phase && $scope.$digest();\n }\n }\n }\n }\n\n function calculateAbsoluteScroll() {\n if(rowHeight) {\n scPreviousScrollTop = viewport.scrollTop();\n let newFirst = Math.floor(viewport.scrollTop() / rowHeight) + buffer.getAbsMinIndex();\n newFirst = Math.max(buffer.getAbsMinIndex(), Math.min(buffer.getAbsMaxIndex(),newFirst)); // Bound the scroll\n if (newFirstbuffer.next+bufferSize) {\n return newFirst;\n } \n }\n return undefined;\n }\n\n function wheelHandler(event) {\n if (!adapter.disabled) {\n const scrollTop = viewport[0].scrollTop;\n const yMax = viewport[0].scrollHeight - viewport[0].clientHeight;\n\n if ((scrollTop === 0 && !buffer.bof) || (scrollTop === yMax && !buffer.eof)) {\n event.preventDefault();\n }\n }\n }\n }\n\n }\n ]);\n"],"sourceRoot":""} \ No newline at end of file diff --git a/src/modules/adapter.js b/src/modules/adapter.js index fc4c7f5f..d37115f8 100644 --- a/src/modules/adapter.js +++ b/src/modules/adapter.js @@ -124,8 +124,10 @@ class Adapter { applyUpdates(arg1, arg2, arg3) { if (typeof arg1 === 'function') { this.applyUpdatesFunc(arg1, arg2); + if(arg2 && arg2.noAdjust) return; } else { this.applyUpdatesIndex(arg1, arg2, arg3); + if(arg3 && arg3.noAdjust) return; } this.doAdjust(); } diff --git a/src/modules/buffer.js b/src/modules/buffer.js index 47484244..71c7b875 100644 --- a/src/modules/buffer.js +++ b/src/modules/buffer.js @@ -22,7 +22,7 @@ export default function ScrollBuffer(elementRoutines, bufferSize, startIndex, ro resetStartIndex: function resetStartIndex(startIndex) { buffer.remove(0, buffer.length); buffer.eof = buffer.eof && startIndex==buffer.maxIndex; - buffer.bof = buffer.bof && startIndex==buffer.maxIndex; + buffer.bof = buffer.bof && startIndex==buffer.minIndex; buffer.first = startIndex; buffer.next = startIndex; }, @@ -100,8 +100,9 @@ export default function ScrollBuffer(elementRoutines, bufferSize, startIndex, ro buffer.next--; } if(!buffer.length) { - buffer.first = 1; - buffer.next = 1; + buffer.first = buffer.minIndex%1 ? buffer.minIndex : startIndex; + buffer.next = buffer.first; + buffer.eof = buffer.eof && buffer.first==buffer.maxIndex; } return elementRoutines.removeElementAnimated(arg1); diff --git a/src/modules/viewport.js b/src/modules/viewport.js index 5fc5e0f5..c6744e41 100644 --- a/src/modules/viewport.js +++ b/src/modules/viewport.js @@ -169,10 +169,9 @@ export default function Viewport(elementRoutines, buffer, element, viewportContr // It is designed to work with non fixed rowHeight, although it will need more tests in this area... scrollTo(first) { if(rowHeight) { - first = Math.min(first, buffer.maxIndex); - first = Math.max(first, buffer.minIndex); const min = buffer.getAbsMinIndex(); const max = buffer.getAbsMaxIndex(); + first = Math.min(Math.max(first, min),max); // Adjust the paddings before removing the elements to avoid touching the scroll top position topPadding.height((first-min)*rowHeight); bottomPadding.height(((max+1)-first)*rowHeight); diff --git a/src/ui-scroll.js b/src/ui-scroll.js index 70028b21..73284808 100644 --- a/src/ui-scroll.js +++ b/src/ui-scroll.js @@ -395,7 +395,10 @@ angular.module('ui.scroll', []) // So we don't need to load top or bottom // This happens when there is a scroll frenzi, and the $digest is slow enough, so it stacks the calls without // giving a chance to the scroll event to be emitted and processed. - if(isPendingScroll()) { + // We also do that if it leads to an absolute scroll + if(isPendingScroll() && calculateAbsoluteScroll()!==undefined) { + // Looks like the event is swallowed on some browsers (FF) on some scroll configuration + resizeAndScrollHandler(); return; } @@ -529,7 +532,7 @@ angular.module('ui.scroll', []) } } } - + function isPendingScroll() { if(rowHeight) { // Maybe the scroll changed but the event has *not* yet being dispatched @@ -547,7 +550,7 @@ angular.module('ui.scroll', []) function resizeAndScrollHandler() { if (rowHeight) { if (scTimer) clearTimeout(scTimer); - scTimer = setTimeout(_resizeAndScrollHandler, 20); + scTimer = setTimeout(_resizeAndScrollHandler, 50); } else { _resizeAndScrollHandler(); } @@ -559,17 +562,11 @@ angular.module('ui.scroll', []) // We might isolate the averegaRowHeight calculation in the viewport to provide an estimate // and provide a reasonable behavior with variable height as well if(rowHeight) { - scPreviousScrollTop = viewport.scrollTop(); - let newFirst = Math.floor(viewport.scrollTop() / rowHeight) + buffer.minIndex; - newFirst = Math.max(buffer.minIndex, Math.min(buffer.maxIndex,newFirst)); // Bound the scroll - if (newFirst=buffer.next) { - scrollTo(newFirst); - return; - } + } } enqueueFetch(ridActual); @@ -586,6 +583,21 @@ angular.module('ui.scroll', []) } } + function calculateAbsoluteScroll() { + if(rowHeight) { + scPreviousScrollTop = viewport.scrollTop(); + let newFirst = Math.floor(viewport.scrollTop() / rowHeight) + buffer.getAbsMinIndex(); + newFirst = Math.max(buffer.getAbsMinIndex(), Math.min(buffer.getAbsMaxIndex(),newFirst)); // Bound the scroll + if (newFirstbuffer.next+bufferSize) { + return newFirst; + } + } + return undefined; + } + function wheelHandler(event) { if (!adapter.disabled) { const scrollTop = viewport[0].scrollTop;