DEV: Refactor PostList cooked HTML rendering (#31307)

- Remove JQuery

- Move decoration into `components/post-item`, instead of managing it
from the top-level user-stream component

- Use new `DecoratedHtml` component

app/assets/javascripts/discourse/app/components/post-list/item/index.gjs

@@ -2,18 +2,22 @@ import Component from "@glimmer/component";
 import { fn } from "@ember/helper";
 import { service } from "@ember/service";
 import { htmlSafe } from "@ember/template";
+import { or } from "truth-helpers";
 import DButton from "discourse/components/d-button";
+import DecoratedHtml from "discourse/components/decorated-html";
 import ExpandPost from "discourse/components/expand-post";
 import PostListItemDetails from "discourse/components/post-list/item/details";
 import avatar from "discourse/helpers/avatar";
 import concatClass from "discourse/helpers/concat-class";
 import icon from "discourse/helpers/d-icon";
+import { bind } from "discourse/lib/decorators";
 import { userPath } from "discourse/lib/url";
 
 export default class PostListItem extends Component {
   @service site;
   @service siteSettings;
   @service currentUser;
+  @service appEvents;
 
   get moderatorActionClass() {
     return this.args.post.post_type === this.site.post_types.moderator_action
@@ -70,6 +74,15 @@ export default class PostListItem extends Component {
     }
   }
 
+  @bind
+  decoratePostContent(element, helper) {
+    this.appEvents.trigger(
+      "decorate-non-stream-cooked-element",
+      element,
+      helper
+    );
+  }
+
   <template>
     <div
       class="post-list-item
@@ -147,11 +160,11 @@ export default class PostListItem extends Component {
         data-user-id={{@post.user_id}}
         class="excerpt"
       >
-        {{#if @post.expandedExcerpt}}
-          {{~htmlSafe @post.expandedExcerpt~}}
-        {{else}}
-          {{~htmlSafe @post.excerpt~}}
-        {{/if}}
+        <DecoratedHtml
+          @html={{htmlSafe (or @post.expandedExcerpt @post.excerpt)}}
+          @decorate={{this.decoratePostContent}}
+          @className="cooked"
+        />
       </div>
 
       {{yield to="belowPostItem"}}

app/assets/javascripts/discourse/app/components/user-stream.gjs

@@ -1,12 +1,9 @@
 import Component from "@glimmer/component";
-import { tracked } from "@glimmer/tracking";
 import { hash } from "@ember/helper";
+import { on } from "@ember/modifier";
 import { action } from "@ember/object";
 import { getOwner } from "@ember/owner";
-import { later } from "@ember/runloop";
 import { service } from "@ember/service";
-import { modifier } from "ember-modifier";
-import $ from "jquery";
 import PluginOutlet from "discourse/components/plugin-outlet";
 import PostActionDescription from "discourse/components/post-action-description";
 import PostList from "discourse/components/post-list";
@@ -26,28 +23,6 @@ export default class UserStreamComponent extends Component {
   @service appEvents;
   @service currentUser;
   @service router;
-  @tracked lastDecoratedElement;
-
-  eventListeners = modifier((element) => {
-    $(element).on("click.details-disabled", "details.disabled", () => false);
-    $(element).on("click.discourse-redirect", ".excerpt a", (e) => {
-      return ClickTrack.trackClick(e, getOwner(this));
-    });
-    later(() => {
-      this.updateLastDecoratedElement();
-      this.appEvents.trigger("decorate-non-stream-cooked-element", element);
-    });
-
-    return () => {
-      $(element).off("click.details-disabled", "details.disabled");
-      // Unbind link tracking
-      $(element).off("click.discourse-redirect", ".excerpt a");
-    };
-  });
-
-  constructor() {
-    super(...arguments);
-  }
 
   get filterClassName() {
     const filter = this.args.stream?.filter;
@@ -68,20 +43,6 @@ export default class UserStreamComponent extends Component {
     return "username";
   }
 
-  @action
-  updateLastDecoratedElement() {
-    const nodes = document.querySelectorAll(".user-stream-item");
-    if (!nodes || nodes.length === 0) {
-      return;
-    }
-
-    const lastElement = nodes[nodes.length - 1];
-    if (lastElement === this.lastDecoratedElement) {
-      return;
-    }
-    this.lastDecoratedElement = lastElement;
-  }
-
   @action
   async removeBookmark(userAction) {
     try {
@@ -140,19 +101,21 @@ export default class UserStreamComponent extends Component {
       return [];
     }
 
-    later(() => {
-      let element = this.lastDecoratedElement?.nextElementSibling;
-      while (element) {
-        this.appEvents.trigger("user-stream:new-item-inserted", element);
-        this.appEvents.trigger("decorate-non-stream-cooked-element", element);
-        element = element.nextElementSibling;
-      }
-      this.updateLastDecoratedElement();
-    });
-
     return this.args.stream.content;
   }
 
+  @action
+  handleClick(event) {
+    if (event.target.matches("details.disabled")) {
+      event.preventDefault();
+      return;
+    }
+
+    if (event.target.matches(".excerpt a")) {
+      return ClickTrack.trackClick(event, getOwner(this));
+    }
+  }
+
   <template>
     <PostList
       @posts={{@stream.content}}
@@ -166,7 +129,7 @@ export default class UserStreamComponent extends Component {
       @resumeDraft={{this.resumeDraft}}
       @removeDraft={{this.removeDraft}}
       class={{concatClass "user-stream" this.filterClassName}}
-      {{this.eventListeners @stream}}
+      {{on "click" this.handleClick}}
     >
       <:abovePostItemHeader as |post|>
         <PluginOutlet

app/assets/javascripts/discourse/app/models/post.js

@@ -165,6 +165,8 @@ export default class Post extends RestModel {
   @trackedPostProperty user_deleted;
   @trackedPostProperty user_id;
   @trackedPostProperty yours;
+  @trackedPostProperty expandedExcerpt;
+  @trackedPostProperty excerpt;
 
   customShare = null;
 

app/assets/javascripts/discourse/tests/acceptance/user-drafts-stream-test.js

@@ -40,7 +40,7 @@ acceptance("User Drafts", function (needs) {
     assert.dom(".user-stream-item").exists("has drafts");
     assert.dom(".user-stream-item:nth-child(3) .category").hasText("meta");
     assert
-      .dom(".user-stream-item:nth-child(3) .excerpt")
+      .dom(".user-stream-item:nth-child(3) .excerpt .cooked")
       .hasHtml(
         `here goes a reply to a PM <img src="/images/emoji/twitter/slight_smile.png?v=${IMAGE_VERSION}" title=":slight_smile:" class="emoji" alt=":slight_smile:" loading="lazy" width="20" height="20" style="aspect-ratio: 20 / 20;">`,
         "shows the excerpt"