MOBILE-3643 forum: Migrate tag-area handler

src/addons/mod/forum/forum.module.ts

@@ -34,6 +34,8 @@ import { AddonModForumDiscussionLinkHandler } from './services/handlers/discussi
 import { AddonModForumIndexLinkHandler } from './services/handlers/index-link';
 import { AddonModForumListLinkHandler } from './services/handlers/list-link';
 import { AddonModForumPostLinkHandler } from './services/handlers/post-link';
+import { CoreTagAreaDelegate } from '@features/tag/services/tag-area-delegate';
+import { AddonModForumTagAreaHandler } from './services/handlers/tag-area';
 
 const mainMenuRoutes: Routes = [
     {
@@ -94,6 +96,7 @@ const courseContentsRoutes: Routes = conditionalRoutes(
                 CoreContentLinksDelegate.instance.registerHandler(AddonModForumIndexLinkHandler.instance);
                 CoreContentLinksDelegate.instance.registerHandler(AddonModForumListLinkHandler.instance);
                 CoreContentLinksDelegate.instance.registerHandler(AddonModForumPostLinkHandler.instance);
+                CoreTagAreaDelegate.instance.registerHandler(AddonModForumTagAreaHandler.instance);
             },
         },
     ],

src/addons/mod/forum/services/handlers/tag-area.ts

@@ -0,0 +1,62 @@
+// (C) Copyright 2015 Moodle Pty Ltd.
+//
+// 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 { Injectable, Type } from '@angular/core';
+
+import { CoreTagAreaHandler } from '@features/tag/services/tag-area-delegate';
+import { CoreTagFeedComponent } from '@features/tag/components/feed/feed';
+import { CoreTagHelper, CoreTagFeedElement } from '@features/tag/services/tag-helper';
+import { makeSingleton } from '@singletons';
+
+/**
+ * Handler to support tags.
+ */
+@Injectable({ providedIn: 'root' })
+export class AddonModForumTagAreaHandlerService implements CoreTagAreaHandler {
+
+    name = 'AddonModForumTagAreaHandler';
+    type = 'mod_forum/forum_posts';
+
+    /**
+     * Whether or not the handler is enabled on a site level.
+     *
+     * @return Whether or not the handler is enabled on a site level.
+     */
+    async isEnabled(): Promise<boolean> {
+        return true;
+    }
+
+    /**
+     * Parses the rendered content of a tag index and returns the items.
+     *
+     * @param content Rendered content.
+     * @return Area items (or promise resolved with the items).
+     */
+    parseContent(content: string): CoreTagFeedElement[] {
+        return CoreTagHelper.instance.parseFeedContent(content);
+    }
+
+    /**
+     * Get the component to use to display items.
+     *
+     * @param injector Injector.
+     * @return The component (or promise resolved with component) to use, undefined if not found.
+     */
+    getComponent(): Type<unknown> | Promise<Type<unknown>> {
+        return CoreTagFeedComponent;
+    }
+
+}
+
+export class AddonModForumTagAreaHandler extends makeSingleton(AddonModForumTagAreaHandlerService) {}