comparison core/misc/announce.js @ 0:c75dbcec494b

Initial commit from drush-created site

+/**
+* DO NOT EDIT THIS FILE.
+* See the following change record for more information,
+* https://www.drupal.org/node/2815083
+* @preserve
+**/
+
+(function (Drupal, debounce) {
+  var liveElement = void 0;
+  var announcements = [];
+
+  Drupal.behaviors.drupalAnnounce = {
+    attach: function attach(context) {
+      if (!liveElement) {
+        liveElement = document.createElement('div');
+        liveElement.id = 'drupal-live-announce';
+        liveElement.className = 'visually-hidden';
+        liveElement.setAttribute('aria-live', 'polite');
+        liveElement.setAttribute('aria-busy', 'false');
+        document.body.appendChild(liveElement);
+      }
+    }
+  };
+
+  function announce() {
+    var text = [];
+    var priority = 'polite';
+    var announcement = void 0;
+
+    var il = announcements.length;
+    for (var i = 0; i < il; i++) {
+      announcement = announcements.pop();
+      text.unshift(announcement.text);
+
+      if (announcement.priority === 'assertive') {
+        priority = 'assertive';
+      }
+    }
+
+    if (text.length) {
+      liveElement.innerHTML = '';
+
+      liveElement.setAttribute('aria-busy', 'true');
+
+      liveElement.setAttribute('aria-live', priority);
+
+      liveElement.innerHTML = text.join('\n');
+
+      liveElement.setAttribute('aria-busy', 'false');
+    }
+  }
+
+  Drupal.announce = function (text, priority) {
+    announcements.push({
+      text: text,
+      priority: priority
+    });
+
+    return debounce(announce, 200)();
+  };
+})(Drupal, Drupal.debounce);