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assets/webapps/uitest.gaiamobile.org/shared/js/accessibility_helper.js

@@ -0,0 +1,23 @@
+'use strict';
+
+(function(exports) {
+
+  var AccessibilityHelper = {
+    /**
+     * For a set of tab elements, set aria-selected attribute in accordance with
+     * the current selection.
+     * @param {Object} selectedTab a tab to select object.
+     * @param {Array} tabs an array of tabs.
+     */
+    setAriaSelected: function ah_setAriaSelected(selectedTab, tabs) {
+      // In case tabs is a NodeList, that does not have forEach.
+      Array.prototype.forEach.call(tabs, function setAriaSelectedAttr(tab) {
+        tab.setAttribute('aria-selected',
+          tab === selectedTab ? 'true' : 'false');
+      });
+    }
+  };
+
+  exports.AccessibilityHelper = AccessibilityHelper;
+
+})(window);