Feature/pt 2136 progress bar does not trigger any screen reader status

CHANGELOG-WIP.md

@@ -26,6 +26,7 @@
 - Improved the accessibility of “More” and “Advanced” toggle triggers. ([#16293]](https://github.com/craftcms/cms/pull/16293))
 - Improved the accessibility of the Craft Support widget. ([#16293]](https://github.com/craftcms/cms/pull/16293))
 - Improved the accessibility of field translatable indicators and tooltips.
+- Progress bars now announce their progress to screen readers. ([#16398](https://github.com/craftcms/cms/pull/16398))
 
 ### Administration
 - Added the “Affiliated Site” native user field. ([#16174](https://github.com/craftcms/cms/pull/16174))
@@ -148,6 +149,7 @@
 - `_includes/forms/autosuggest.twig` now supports a `suggestTemplates` variable. 
 - `_includes/forms/colorSelect.twig` now supports `options` and `withBlankOption` variables.
 - `_includes/forms/selectize.twig` now supports a `color` property in option data, which can be set to a hex value or a color name.
+- Added `Craft.IntervalManager`. ([#16398](https://github.com/craftcms/cms/pull/16398))
 - Sortable checkbox selects now always display the selected options first on initial render.
 
 ### System

packages/craftcms-webpack/Craft.d.ts

@@ -1,6 +1,10 @@
 // Set up interfaces and types
 interface ProgressBarInterface {
-  new ($element: JQuery, displaySteps?: boolean): ProgressBarInterface;
+  new (
+    $element: JQuery,
+    displaySteps?: boolean,
+    settings?: Object
+  ): ProgressBarInterface;
 
   $progressBar: JQuery;
 
@@ -13,6 +17,14 @@ interface ProgressBarInterface {
   showProgressBar(): void;
 }
 
+interface IntervalManagerInterface {
+  new (settings?: Object): IntervalManagerInterface;
+
+  stop(): void;
+
+  start(): void;
+}
+
 type Site = {
   handle: string;
   id: number;
@@ -25,6 +37,7 @@ declare var Craft: {
   csrfTokenName?: string;
   csrfTokenValue?: string;
   ProgressBar: ProgressBarInterface;
+  IntervalManager: IntervalManagerInterface;
   t(category: string, message: string, params?: object): string;
   sendActionRequest(method: string, action: string, options?: object): Promise;
   initUiElements($container: JQuery): void;

src/translations/en/app.php

@@ -830,6 +830,7 @@
     'Includes suspending, unsuspending, and unlocking user accounts.' => 'Includes suspending, unsuspending, and unlocking user accounts.',
     'Incorrect current password.' => 'Incorrect current password.',
     'Incorrect password.' => 'Incorrect password.',
+    'Indexing assets: {progress}' => 'Indexing assets: {progress}',
     'Indigo' => 'Indigo',
     'Information' => 'Information',
     'Initial Rows' => 'Initial Rows',
@@ -1242,6 +1243,8 @@
     'Primary fields' => 'Primary fields',
     'Primary {type} page' => 'Primary {type} page',
     'Primary' => 'Primary',
+    'Process complete' => 'Process complete',
+    'Processing' => 'Processing',
     'Profile Twig templates when Dev Mode is disabled' => 'Profile Twig templates when Dev Mode is disabled',
     'Profile' => 'Profile',
     'Progress' => 'Progress',
@@ -2190,6 +2193,7 @@
     '{name} should be at least {value}.' => '{name} should be at least {value}.',
     '{name} sorted by {attribute}, {direction}' => '{name} sorted by {attribute}, {direction}',
     '{nestedType} can only be created after the {ownerType} has been saved.' => '{nestedType} can only be created after the {ownerType} has been saved.',
+    '{num} percent complete' => '{num} percent complete',
     '{num, number} {num, plural, =1{Available Update} other{Available Updates}}' => '{num, number} {num, plural, =1{Available Update} other{Available Updates}}',
     '{num, number} {num, plural, =1{column} other{columns}}' => '{num, number} {num, plural, =1{column} other{columns}}',
     '{num, number} {num, plural, =1{day} other{days}}' => '{num, number} {num, plural, =1{day} other{days}}',

src/web/assets/assetindexes/src/AssetIndexer.ts

@@ -60,6 +60,7 @@ export class AssetIndexer {
   private _priorityTasks: ConcurrentTask[] = [];
   private _prunedSessionIds: number[] = [];
   private _currentlyReviewing = false;
+  private intervalAnnouncer: IntervalManagerInterface | null = null;
 
   private indexingSessions: {
     [key: number]: AssetIndexingSession;
@@ -77,6 +78,7 @@ export class AssetIndexer {
     this._maxConcurrentConnections = maxConcurrentConnections;
     this.$indexingSessionTable = $indexingSessionTable;
     this.indexingSessions = {};
+
     let reviewSessionId: number = 0;
 
     for (const sessionModel of sessions) {
@@ -101,6 +103,8 @@ export class AssetIndexer {
     }
 
     if (this._currentIndexingSession) {
+      this._createProgressAnnouncer();
+      this._startProgressAnnouncer();
       this.performIndexingStep();
     }
   }
@@ -109,6 +113,17 @@ export class AssetIndexer {
     return this._currentIndexingSession;
   }
 
+  /**
+   * Get progress info for the current session
+   */
+  getCurrentSessionProgressInfo(): string | null {
+    if (this.currentIndexingSession !== null) {
+      const session = this.indexingSessions[this.currentIndexingSession];
+      return session.getProgressInfo();
+    }
+    return null;
+  }
+
   /**
    * Update indexing session store
    * @param session
@@ -261,6 +276,8 @@ export class AssetIndexer {
       return;
     }
 
+    this._stopProgressAnnouncer();
+
     this._currentlyReviewing = true;
     this.pruneWaitingTasks(session.getSessionId());
     let $confirmBody = $('<div></div>');
@@ -478,6 +495,34 @@ export class AssetIndexer {
       .then((response) => this.processSuccessResponse(response))
       .catch(({response}) => this.processFailureResponse(response))
       .finally(() => cb());
+
+    // Begin making intermittent announcements
+    if (!this.intervalAnnouncer) {
+      this._createProgressAnnouncer();
+      this._startProgressAnnouncer();
+    }
+  }
+
+  private _createProgressAnnouncer(): void {
+    this.intervalAnnouncer = new Craft.IntervalManager({
+      onInterval: () => {
+        if (this.currentIndexingSession !== null) {
+          Craft.cp.announce(
+            Craft.t('app', 'Indexing assets: {progress}', {
+              progress: this.getCurrentSessionProgressInfo(),
+            })
+          );
+        }
+      },
+    });
+  }
+
+  private _stopProgressAnnouncer(): void {
+    this.intervalAnnouncer?.stop();
+  }
+
+  private _startProgressAnnouncer(): void {
+    this.intervalAnnouncer?.start();
   }
 
   public performIndexingStep(): void {
@@ -646,6 +691,10 @@ class AssetIndexingSession {
     return this.indexingSessionData.listEmptyFolders;
   }
 
+  public getProgressInfo(): string {
+    return `${this.indexingSessionData.processedEntries} / ${this.indexingSessionData.totalEntries}`;
+  }
+
   /**
    * Get the remaining entry count for this sessions.
    */
@@ -698,7 +747,10 @@ class AssetIndexingSession {
     ).css('position', 'relative');
     const progressBar = new Craft.ProgressBar(
       $progressCell.find('.progressContainer'),
-      false
+      false,
+      {
+        announceProgress: false,
+      }
     );
 
     progressBar.setItemCount(this.indexingSessionData.totalEntries);
@@ -710,9 +762,7 @@ class AssetIndexingSession {
     $progressCell.data('progressBar', progressBar);
     $progressCell
       .find('.progressContainer')
-      .append(
-        `<div class="progressInfo">${this.indexingSessionData.processedEntries} / ${this.indexingSessionData.totalEntries}</div>`
-      );
+      .append(`<div class="progressInfo">${this.getProgressInfo()}</div>`);
     $tr.append($progressCell);
 
     $tr.append('<td>' + this.getSessionStatusMessage() + '</td>');