Merge pull request #1713 from sul-dlss/t1688-media-content-tab-roles

Set appropriate aria-role, aria-selected, and aria-controls for the content thumbnails
sul-dlss · Nov 9, 2023 · 214c0df · 214c0df
2 parents 87cac54 + e99a5e6
commit 214c0df
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Showing 3 changed files with 13 additions and 3 deletions.
diff --git a/app/components/embed/media_with_companion_windows_component.html.erb b/app/components/embed/media_with_companion_windows_component.html.erb
@@ -76,7 +76,7 @@
             <h3>Media Content</h3>
           </div>
 
-          <ul class="contentsList" data-media-tag-target="list"></ul>
+          <ul class="contentsList" data-media-tag-target="list" role="tablist"></ul>
         </section>
         <section id="rights" data-media-target="rights" role="tabpanel" hidden>
           <div class="header-background">
@@ -87,7 +87,7 @@
         </section>
       </div>
     </aside>
-    <div class='sul-embed-body sul-embed-media'>
+    <div class='sul-embed-body sul-embed-media' id='sul-embed-body'>
       <%= render Embed::MediaTagComponent.with_collection(resources_with_primary_file,
                                                           include_transcripts:,
                                                           druid:,

diff --git a/app/javascript/src/controllers/thumbnail_controller.js b/app/javascript/src/controllers/thumbnail_controller.js
@@ -8,5 +8,15 @@ export default class extends Controller {
     evt.preventDefault();
     const event = new CustomEvent('thumbnail-clicked', { detail: { index: evt.params.index } })
     window.dispatchEvent(event)
+
+    const tabs = this.element.closest('[role="tablist"]').querySelectorAll('[role="tab"]')
+    tabs.forEach((target) => {
+      target.classList.remove('active')
+      target.setAttribute("aria-selected", false)
+    })
+
+    const target = this.element
+    target.classList.add('active')
+    target.setAttribute("aria-selected", true)
   }
 }
diff --git a/app/javascript/src/modules/media_thumbnail_builder.js b/app/javascript/src/modules/media_thumbnail_builder.js
@@ -28,7 +28,7 @@ export default function(dataset, index) {
     const fileLabel = dataset.fileLabel || '';
     const duration = dataset.duration || '';
     // Note: the "position: relative" is required for the stretched-link style.
-    return `<li class="sul-embed-media-slider-thumb ${activeClass}" data-controller="thumbnail" data-action="click->thumbnail#activate" data-thumbnail-index-param="${index}" style="position: relative;">
+    return `<li class="sul-embed-media-slider-thumb ${activeClass}" data-controller="thumbnail" data-action="click->thumbnail#activate" data-thumbnail-index-param="${index}" style="position: relative;" aria-controls="sul-embed-body" role="tab">
         <a class="sul-embed-stretched-link" href="#">
           ${thumbnailIcon}
           <span class="${labelClass}">