refactor(ios): add a uiManager getter for UIView

For compatibility,
some third-party components want to get UIManager
or HippyBridge directly through UIView,
although there is a slight performance penalty doing this.

renderer/native/ios/renderer/HippyUIManager.h

@@ -33,6 +33,7 @@
 @class HippyComponentMap;
 @protocol HippyImageProviderProtocol;
 
+NS_ASSUME_NONNULL_BEGIN
 
 /**
  * Posted whenever a new root view is registered with HippyUIManager. The userInfo property
@@ -156,3 +157,5 @@ HIPPY_EXTERN NSString *const HippyUIManagerDidEndBatchNotification;
 @property (nonatomic, strong, readonly) id<HippyCustomTouchHandlerProtocol> customTouchHandler;
 
 @end
+
+NS_ASSUME_NONNULL_END

renderer/native/ios/renderer/HippyUIManager.mm

@@ -162,6 +162,18 @@ static void NativeRenderTraverseViewNodes(id<HippyComponent> view, void (^block)
     }
 }
 
+
+@interface UIView (HippyUIManagerPrivate)
+
+/// Bind UIView with HippyUIManager
+/// This is a convenient method for UIView to get HippyUIManager instance.
+/// - Parameter uiManager: HippyUIManager instance
+- (void)setUiManager:(HippyUIManager *)uiManager;
+
+@end
+
+#pragma mark -
+
 #define AssertMainQueue() NSAssert(HippyIsMainQueue(), @"This function must be called on the main thread")
 
 NSString *const HippyUIManagerDidRegisterRootViewNotification = @"HippyUIManagerDidRegisterRootViewNotification";
@@ -318,8 +330,8 @@ - (void)registerRootView:(UIView *)rootView asRootNode:(std::weak_ptr<RootNode>)
     
     // Register view
     [_viewRegistry addRootComponent:rootView rootNode:rootNode forTag:hippyTag];
-    
-    [rootView addObserver:self forKeyPath:@"frame" 
+    rootView.uiManager = self;
+    [rootView addObserver:self forKeyPath:@"frame"
                   options:(NSKeyValueObservingOptionOld | NSKeyValueObservingOptionNew)
                   context:NULL];
     CGRect frame = rootView.frame;
@@ -516,6 +528,7 @@ - (UIView *)createViewFromShadowView:(HippyShadowView *)shadowView {
             view.viewName = viewName;
             view.rootTag = rootTag;
             view.hippyShadowView = shadowView;
+            view.uiManager = self;
             [componentData setProps:props forView:view];  // Must be done before bgColor to prevent wrong default
         }
     }
@@ -1523,7 +1536,5 @@ - (void)setCustomTouchHandler:(id<HippyCustomTouchHandlerProtocol>)customTouchHa
     objc_setAssociatedObject(self, @selector(customTouchHandler), customTouchHandler, OBJC_ASSOCIATION_RETAIN);
 }
 
-
 @end
 
-

renderer/native/ios/renderer/component/view/UIView+Render.h

@@ -0,0 +1,37 @@
+/*!
+ * iOS SDK
+ *
+ * Tencent is pleased to support the open source community by making
+ * Hippy available.
+ *
+ * Copyright (C) 2019 THL A29 Limited, a Tencent company.
+ * All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <UIKit/UIKit.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+@class HippyUIManager;
+/// UIView's UIManager category
+@interface UIView (HippyUIManager)
+
+/// Convenient method to get HippyUIManager instance,
+/// UIView's uiManager property is set when created.
+- (nullable HippyUIManager *)uiManager;
+
+@end
+
+NS_ASSUME_NONNULL_END

renderer/native/ios/renderer/component/view/UIView+Render.m

@@ -0,0 +1,38 @@
+/*!
+ * iOS SDK
+ *
+ * Tencent is pleased to support the open source community by making
+ * Hippy available.
+ *
+ * Copyright (C) 2019 THL A29 Limited, a Tencent company.
+ * All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "UIView+Render.h"
+#import <objc/runtime.h>
+
+@implementation UIView (HippyUIManager)
+
+- (HippyUIManager *)uiManager {
+    NSValue *weakValue = objc_getAssociatedObject(self, @selector(uiManager));
+    return [weakValue nonretainedObjectValue];
+}
+
+- (void)setUiManager:(HippyUIManager *)uiManager {
+    NSValue *weakValue = [NSValue valueWithNonretainedObject:uiManager];
+    objc_setAssociatedObject(self, @selector(uiManager), weakValue, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
+}
+
+@end

tests/ios/HippyUIViewCategoryTest.m

@@ -21,7 +21,18 @@
  */
 
 #import <XCTest/XCTest.h>
-#import "UIView+Hippy.h"
+#import <hippy/UIView+Hippy.h>
+#import <hippy/UIView+Render.h>
+#import <hippy/HippyUIManager.h>
+
+@interface UIView (HippyUIManagerUnitTest)
+
+/// Bind UIView with HippyUIManager
+/// This is a convenient method for UIView to get HippyUIManager instance.
+/// - Parameter uiManager: HippyUIManager instance
+- (void)setUiManager:(HippyUIManager *)uiManager;
+
+@end
 
 @interface HippyUIViewCategoryTest : XCTestCase
 
@@ -47,8 +58,15 @@ - (void)testGetHippyRootView {
     XCTAssert([testView hippyRootView] == testSuperView);
     testView.hippyTag = @(11);
     XCTAssert([testView hippyRootView] == nil);
+}
+
+- (void)testGetHippyUIManager {
+    UIView *testView = [UIView new];
+    XCTAssertNil([testView uiManager]);
 
-
+    HippyUIManager *uiManager = [[HippyUIManager alloc] init];
+    XCTAssertNoThrow(testView.uiManager = uiManager);
+    XCTAssertTrue(testView.uiManager == uiManager);
 }