DEV: convert TopicMapExpanded widget to glimmer component (#26027)

* DEV: add topic-map-expanded glimmer component

* DEV: remove topic-map-expanded widgets from topic-map

* DEV: add noreferrer for _blank target and add table grouping to template

* DEV: negate base styling of tbody element so expanded topic map retains current look

* DEV: pass in title to TopicParticipants as internationalized string instead of renderable HTML and set TRUNCATED_LINKS_LIMIT constant

app/assets/javascripts/discourse/app/components/topic-map/topic-map-expanded.gjs

@@ -0,0 +1,125 @@
+import Component from "@glimmer/component";
+import { tracked } from "@glimmer/tracking";
+import { action } from "@ember/object";
+import DButton from "discourse/components/d-button";
+import TopicParticipants from "discourse/components/topic-map/topic-participants";
+import replaceEmoji from "discourse/helpers/replace-emoji";
+import i18n from "discourse-common/helpers/i18n";
+import and from "truth-helpers/helpers/and";
+import lt from "truth-helpers/helpers/lt";
+import not from "truth-helpers/helpers/not";
+
+const TRUNCATED_LINKS_LIMIT = 5;
+
+export default class TopicMapExpanded extends Component {
+  @tracked allLinksShown = false;
+
+  @action
+  showAllLinks() {
+    this.allLinksShown = true;
+  }
+
+  get linksToShow() {
+    return this.allLinksShown
+      ? this.args.postAttrs.topicLinks
+      : this.args.postAttrs.topicLinks.slice(0, TRUNCATED_LINKS_LIMIT);
+  }
+
+  <template>
+    {{#if @postAttrs.participants}}
+      <section class="avatars">
+        <TopicParticipants
+          @title={{i18n "topic_map.participants_title"}}
+          @userFilters={{@postAttrs.userFilters}}
+          @participants={{@postAttrs.participants}}
+        />
+      </section>
+    {{/if}}
+    {{#if @postAttrs.topicLinks}}
+      <section class="links">
+        <h3>{{i18n "topic_map.links_title"}}</h3>
+        <table class="topic-links">
+          <tbody>
+            {{#each this.linksToShow as |link|}}
+              <tr>
+                <td>
+                  <span
+                    class="badge badge-notification clicks"
+                    title={{i18n "topic_map.clicks" count=link.clicks}}
+                  >
+                    {{link.clicks}}
+                  </span>
+                </td>
+                <td>
+                  <TopicMapLink
+                    @attachment={{link.attachment}}
+                    @title={{link.title}}
+                    @rootDomain={{link.root_domain}}
+                    @url={{link.url}}
+                    @userId={{link.user_id}}
+                  />
+                </td>
+              </tr>
+            {{/each}}
+          </tbody>
+        </table>
+        {{#if
+          (and
+            (not this.allLinksShown)
+            (lt TRUNCATED_LINKS_LIMIT @postAttrs.topicLinks.length)
+          )
+        }}
+          <div class="link-summary">
+            <span>
+              <DButton
+                @action={{this.showAllLinks}}
+                @title="topic_map.links_shown"
+                @icon="chevron-down"
+                class="btn-flat"
+              />
+            </span>
+          </div>
+        {{/if}}
+      </section>
+    {{/if}}
+  </template>
+}
+
+class TopicMapLink extends Component {
+  get linkClasses() {
+    return this.args.attachment
+      ? "topic-link track-link attachment"
+      : "topic-link track-link";
+  }
+
+  get truncatedContent() {
+    const truncateLength = 85;
+    const content = this.args.title || this.args.url;
+    return content.length > truncateLength
+      ? `${content.slice(0, truncateLength).trim()}...`
+      : content;
+  }
+
+  <template>
+    <a
+      class={{this.linkClasses}}
+      href={{@url}}
+      title={{@url}}
+      data-user-id={{@userId}}
+      data-ignore-post-id="true"
+      target="_blank"
+      rel="nofollow ugc noopener noreferrer"
+    >
+      {{#if @title}}
+        {{replaceEmoji this.truncatedContent}}
+      {{else}}
+        {{this.truncatedContent}}
+      {{/if}}
+    </a>
+    {{#if (and @title @rootDomain)}}
+      <span class="domain">
+        {{@rootDomain}}
+      </span>
+    {{/if}}
+  </template>
+}

app/assets/javascripts/discourse/app/components/topic-map/topic-participants.gjs

@@ -2,11 +2,12 @@ import Component from "@glimmer/component";
 import TopicParticipant from "discourse/components/topic-map/topic-participant";
 
 export default class TopicParticipants extends Component {
-  // prettier-ignore
   toggledUsers = new Set(this.args.userFilters);
 
   <template>
-    {{@title}}
+    {{#if @title}}
+      <h3>{{@title}}</h3>
+    {{/if}}
     {{#each @participants as |participant|}}
       <TopicParticipant
         @participant={{participant}}

app/assets/javascripts/discourse/app/widgets/topic-map.js

@@ -1,155 +1,6 @@
-import { htmlSafe } from "@ember/template";
 import { hbs } from "ember-cli-htmlbars";
-import { h } from "virtual-dom";
-import { replaceEmoji } from "discourse/widgets/emoji";
 import RenderGlimmer from "discourse/widgets/render-glimmer";
 import { createWidget } from "discourse/widgets/widget";
-import I18n from "discourse-i18n";
-
-const LINKS_SHOWN = 5;
-
-function renderParticipants(wrapperElement, title, userFilters, participants) {
-  return new RenderGlimmer(
-    this,
-    wrapperElement,
-    hbs`<TopicMap::TopicParticipants
-        @title={{@data.title}}
-        @participants={{@data.participants}}
-        @userFilters={{@data.userFilters}}
-      />`,
-    {
-      title,
-      userFilters,
-      participants,
-    }
-  );
-}
-
-createWidget("topic-map-show-links", {
-  tagName: "div.link-summary",
-  html() {
-    return h(
-      "span",
-      this.attach("button", {
-        title: "topic_map.links_shown",
-        icon: "chevron-down",
-        action: "showLinks",
-        className: "btn btn-flat",
-      })
-    );
-  },
-
-  showLinks() {
-    this.sendWidgetAction("showAllLinks");
-  },
-});
-
-createWidget("topic-map-link", {
-  tagName: "a.topic-link.track-link",
-
-  buildClasses(attrs) {
-    if (attrs.attachment) {
-      return "attachment";
-    }
-  },
-
-  buildAttributes(attrs) {
-    return {
-      href: attrs.url,
-      target: "_blank",
-      "data-user-id": attrs.user_id,
-      "data-ignore-post-id": "true",
-      title: attrs.url,
-      rel: "nofollow ugc noopener",
-    };
-  },
-
-  html(attrs) {
-    let content = attrs.title || attrs.url;
-    const truncateLength = 85;
-
-    if (content.length > truncateLength) {
-      content = `${content.slice(0, truncateLength).trim()}...`;
-    }
-
-    return attrs.title ? replaceEmoji(content) : content;
-  },
-});
-
-createWidget("topic-map-expanded", {
-  tagName: "section.topic-map-expanded#topic-map-expanded",
-  buildKey: (attrs) => `topic-map-expanded-${attrs.id}`,
-
-  defaultState() {
-    return { allLinksShown: false };
-  },
-
-  html(attrs, state) {
-    let avatars;
-
-    if (attrs.participants && attrs.participants.length > 0) {
-      avatars = renderParticipants.call(
-        this,
-        "section.avatars",
-        htmlSafe(`<h3>${I18n.t("topic_map.participants_title")}</h3>`),
-        attrs.userFilters,
-        attrs.participants
-      );
-    }
-
-    const result = [avatars];
-    if (attrs.topicLinks) {
-      const toShow = state.allLinksShown
-        ? attrs.topicLinks
-        : attrs.topicLinks.slice(0, LINKS_SHOWN);
-
-      const links = toShow.map((l) => {
-        let host = "";
-
-        if (l.title && l.title.length) {
-          const rootDomain = l.root_domain;
-
-          if (rootDomain && rootDomain.length) {
-            host = h("span.domain", rootDomain);
-          }
-        }
-
-        return h("tr", [
-          h(
-            "td",
-            h(
-              "span.badge.badge-notification.clicks",
-              {
-                attributes: {
-                  title: I18n.t("topic_map.clicks", { count: l.clicks }),
-                },
-              },
-              l.clicks.toString()
-            )
-          ),
-          h("td", [this.attach("topic-map-link", l), " ", host]),
-        ]);
-      });
-
-      const showAllLinksContent = [
-        h("h3", I18n.t("topic_map.links_title")),
-        h("table.topic-links", links),
-      ];
-
-      if (!state.allLinksShown && links.length < attrs.topicLinks.length) {
-        showAllLinksContent.push(this.attach("topic-map-show-links"));
-      }
-
-      const section = h("section.links", showAllLinksContent);
-      result.push(section);
-    }
-    return result;
-  },
-
-  showAllLinks() {
-    this.state.allLinksShown = true;
-  },
-});
 
 export default createWidget("topic-map", {
   tagName: "div.topic-map",
@@ -163,7 +14,7 @@ export default createWidget("topic-map", {
     const contents = [this.buildTopicMapSummary(attrs, state)];
 
     if (!state.collapsed) {
-      contents.push(this.attach("topic-map-expanded", attrs));
+      contents.push(this.buildTopicMapExpanded(attrs));
     }
 
     if (attrs.hasTopRepliesSummary || attrs.summarizable) {
@@ -203,6 +54,19 @@ export default createWidget("topic-map", {
     );
   },
 
+  buildTopicMapExpanded(attrs) {
+    return new RenderGlimmer(
+      this,
+      "section.topic-map-expanded",
+      hbs`<TopicMap::TopicMapExpanded
+        @postAttrs={{@data.postAttrs}}
+      />`,
+      {
+        postAttrs: attrs,
+      }
+    );
+  },
+
   buildSummaryBox(attrs) {
     return new RenderGlimmer(
       this,

app/assets/javascripts/discourse/tests/integration/components/widgets/post-test.js

@@ -787,18 +787,10 @@ module("Integration | Component | Widget | post", function (hooks) {
     });
 
     await render(hbs`<MountWidget @widget="post" @args={{this.args}} />`);
-
-    assert.ok(
-      !exists("li.avatars a.poster"),
-      "shows no participants when collapsed"
-    );
+    assert.dom("li.avatars a.poster").doesNotExist();
 
     await click("nav.buttons button");
-    assert.strictEqual(
-      count(".topic-map-expanded a.poster"),
-      2,
-      "shows all when expanded"
-    );
+    assert.dom(".topic-map-expanded a.poster").exists({ count: 2 });
   });
 
   test("topic map - participants", async function (assert) {
@@ -815,21 +807,12 @@ module("Integration | Component | Widget | post", function (hooks) {
     });
 
     await render(hbs`<MountWidget @widget="post" @args={{this.args}} />`);
-
-    assert.strictEqual(
-      count("li.avatars a.poster"),
-      3,
-      "limits to three participants"
-    );
+    assert.dom("li.avatars a.poster").exists({ count: 3 });
 
     await click("nav.buttons button");
-    assert.ok(!exists("li.avatars a.poster"));
-    assert.strictEqual(
-      count(".topic-map-expanded a.poster"),
-      4,
-      "shows all when expanded"
-    );
-    assert.strictEqual(count("a.poster.toggled"), 2, "two are toggled");
+    assert.dom("li.avatars a.poster").doesNotExist();
+    assert.dom(".topic-map-expanded a.poster").exists({ count: 4 });
+    assert.dom("a.poster.toggled").exists({ count: 2 });
   });
 
   test("topic map - links", async function (assert) {
@@ -847,26 +830,18 @@ module("Integration | Component | Widget | post", function (hooks) {
 
     await render(hbs`<MountWidget @widget="post" @args={{this.args}} />`);
 
-    assert.strictEqual(count(".topic-map"), 1);
-    assert.strictEqual(count(".map.map-collapsed"), 1);
-    assert.ok(!exists(".topic-map-expanded"));
+    assert.dom(".topic-map").exists({ count: 1 });
+    assert.dom(".map.map-collapsed").exists({ count: 1 });
+    assert.dom(".topic-map-expanded").doesNotExist();
 
     await click("nav.buttons button");
-    assert.ok(!exists(".map.map-collapsed"));
-    assert.strictEqual(count(".topic-map .d-icon-chevron-up"), 1);
-    assert.strictEqual(count(".topic-map-expanded"), 1);
-    assert.strictEqual(
-      count(".topic-map-expanded .topic-link"),
-      5,
-      "it limits the links displayed"
-    );
+    assert.dom(".map.map-collapsed").doesNotExist();
+    assert.dom(".topic-map .d-icon-chevron-up").exists({ count: 1 });
+    assert.dom(".topic-map-expanded").exists({ count: 1 });
+    assert.dom(".topic-map-expanded .topic-link").exists({ count: 5 });
 
     await click(".link-summary button");
-    assert.strictEqual(
-      count(".topic-map-expanded .topic-link"),
-      6,
-      "all links now shown"
-    );
+    assert.dom(".topic-map-expanded .topic-link").exists({ count: 6 });
   });
 
   test("topic map - no summary", async function (assert) {

app/assets/stylesheets/common/base/topic-post.scss

@@ -751,6 +751,9 @@ aside.quote {
   }
 
   .topic-links {
+    tbody {
+      border: none;
+    }
     tr {
       border: none;
     }