third_party/polymer/v1_0/components/iron-menu-behavior/iron-menubar-behavior.html

   1 <!--
   2 @license
   3 Copyright (c) 2015 The Polymer Project Authors. All rights reserved.
   4 This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
   5 The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
   6 The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
   7 Code distributed by Google as part of the polymer project is also
   8 subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
   9 -->
  10
  11 <link rel="import" href="../polymer/polymer.html">
  12 <link rel="import" href="iron-menu-behavior.html">
  13
  14 <script>
  15
  16   /**
  17    * `Polymer.IronMenubarBehavior` implements accessible menubar behavior.
  18    *
  19    * @polymerBehavior Polymer.IronMenubarBehavior
  20    */
  21   Polymer.IronMenubarBehaviorImpl = {
  22
  23     hostAttributes: {
  24       'role': 'menubar'
  25     },
  26
  27     keyBindings: {
  28       'left': '_onLeftKey',
  29       'right': '_onRightKey'
  30     },
  31
  32     _onUpKey: function(event) {
  33       this._activateFocused(event.detail.keyboardEvent);
  34     },
  35
  36     _onDownKey: function(event) {
  37       this._activateFocused(event.detail.keyboardEvent);
  38     },
  39
  40     _onLeftKey: function() {
  41       this._focusPrevious();
  42     },
  43
  44     _onRightKey: function() {
  45       this._focusNext();
  46     },
  47
  48     _onKeydown: function(event) {
  49       if (this.keyboardEventMatchesKeys(event, 'up down left right esc enter')) {
  50         return;
  51       }
  52
  53       // all other keys focus the menu item starting with that character
  54       this._focusWithKeyboardEvent(event);
  55     }
  56
  57   };
  58
  59   /** @polymerBehavior Polymer.IronMenubarBehavior */
  60   Polymer.IronMenubarBehavior = [
  61     Polymer.IronMenuBehavior,
  62     Polymer.IronMenubarBehaviorImpl
  63   ];
  64
  65 </script>