Merge branch '4.13' of https://github.com/craftcms/cms into 5.5

CHANGELOG-WIP.md

@@ -18,6 +18,7 @@
 ### Administration
 - All relation fields can now be selected as field layouts’ thumbnail providers. ([#15651](https://github.com/craftcms/cms/discussions/15651))
 - Added the “Markdown” field layout UI element type. ([#15674](https://github.com/craftcms/cms/pull/15674), [#15664](https://github.com/craftcms/cms/discussions/15664))
+- Added the “Language” element condition rule. ([#15952](https://github.com/craftcms/cms/discussions/15952))
 - The Sections index table can now be sorted by Name, Handle, and Type. ([#15936](https://github.com/craftcms/cms/pull/15936))
 - Sections are no longer required to have unique names. ([#9829](https://github.com/craftcms/cms/discussions/9829))
 - Customize Sources modals now display native sources’ handles, when known.
@@ -47,7 +48,6 @@
 - Added `craft\filters\BasicHttpAuthLogin`. ([#15720](https://github.com/craftcms/cms/pull/15720))
 - Added `craft\filters\BasicHttpAuthStatic`. ([#15720](https://github.com/craftcms/cms/pull/15720))
 - Added `craft\filters\ConditionalFilterTrait`. ([#15948](https://github.com/craftcms/cms/pull/15948))
-- Added `craft\filters\SiteFilterTrait::$enabled`. ([#15720](https://github.com/craftcms/cms/pull/15720))
 - Added `craft\filters\UtilityAccess`.
 - Added `craft\helpers\Console::indent()`.
 - Added `craft\helpers\Console::indentStr()`.

src/elements/conditions/ElementCondition.php

@@ -179,6 +179,7 @@ protected function selectableConditionRules(): array
 
         if (Craft::$app->getIsMultiSite() && (!$elementType || $elementType::isLocalized())) {
             $types[] = SiteConditionRule::class;
+            $types[] = LanguageConditionRule::class;
 
             if (count(Craft::$app->getSites()->getAllGroups()) > 1) {
                 $types[] = SiteGroupConditionRule::class;

src/elements/conditions/LanguageConditionRule.php

@@ -0,0 +1,63 @@
+<?php
+
+namespace craft\elements\conditions;
+
+use Craft;
+use craft\base\conditions\BaseMultiSelectConditionRule;
+use craft\base\ElementInterface;
+use craft\elements\db\ElementQueryInterface;
+use craft\helpers\ArrayHelper;
+use craft\i18n\Locale;
+
+/**
+ * Site condition rule.
+ *
+ * @author Pixel & Tonic, Inc. <[email protected]>
+ * @since 5.5.0
+ */
+class LanguageConditionRule extends BaseMultiSelectConditionRule implements ElementConditionRuleInterface
+{
+    /**
+     * @inheritdoc
+     */
+    public function getLabel(): string
+    {
+        return Craft::t('app', 'Language');
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function getExclusiveQueryParams(): array
+    {
+        return ['site', 'siteId'];
+    }
+
+    /**
+     * @inheritdoc
+     */
+    protected function options(): array
+    {
+        return ArrayHelper::map(
+            Craft::$app->getI18n()->getSiteLocales(),
+            fn(Locale $locale) => $locale->id,
+            fn(Locale $locale) => $locale->getDisplayName(Craft::$app->language),
+        );
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function modifyQuery(ElementQueryInterface $query): void
+    {
+        $query->language($this->paramValue());
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function matchElement(ElementInterface $element): bool
+    {
+        return $this->matchValue($element->getLanguage());
+    }
+}