chrome/browser/resources/extensions/extension_commands_overlay.js

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 <include src="extension_command_list.js">
   6
   7 cr.define('extensions', function() {
   8   'use strict';
   9
  10   // The Extension Commands list object that will be used to show the commands
  11   // on the page.
  12   var ExtensionCommandList = options.ExtensionCommandList;
  13
  14   /**
  15    * ExtensionCommandsOverlay class
  16    * Encapsulated handling of the 'Extension Commands' overlay page.
  17    * @constructor
  18    */
  19   function ExtensionCommandsOverlay() {
  20   }
  21
  22   cr.addSingletonGetter(ExtensionCommandsOverlay);
  23
  24   ExtensionCommandsOverlay.prototype = {
  25     /**
  26      * Initialize the page.
  27      */
  28     initializePage: function() {
  29       var overlay = $('overlay');
  30       cr.ui.overlay.setupOverlay(overlay);
  31       cr.ui.overlay.globalInitialization();
  32       overlay.addEventListener('cancelOverlay', this.handleDismiss_.bind(this));
  33
  34       this.extensionCommandList_ = new ExtensionCommandList(
  35           /**@type {HTMLDivElement} */($('extension-command-list')));
  36
  37       $('extension-commands-dismiss').addEventListener('click', function() {
  38         cr.dispatchSimpleEvent(overlay, 'cancelOverlay');
  39       });
  40
  41       // The ExtensionList will update us with its data, so we don't need to
  42       // handle that here.
  43     },
  44
  45     /**
  46      * Handles a click on the dismiss button.
  47      * @param {Event} e The click event.
  48      */
  49     handleDismiss_: function(e) {
  50       extensions.ExtensionSettings.showOverlay(null);
  51     },
  52   };
  53
  54   /**
  55    * Called by the dom_ui_ to re-populate the page with data representing
  56    * the current state of extension commands.
  57    * @param {!Array<ExtensionInfo>} extensionsData
  58    */
  59   ExtensionCommandsOverlay.updateExtensionsData = function(extensionsData) {
  60     var overlay = ExtensionCommandsOverlay.getInstance();
  61     overlay.extensionCommandList_.setData(extensionsData);
  62
  63     var hasAnyCommands = false;
  64     for (var i = 0; i < extensionsData.length; ++i) {
  65       if (extensionsData[i].commands.length > 0) {
  66         hasAnyCommands = true;
  67         break;
  68       }
  69     }
  70
  71     // Make sure the config link is visible, since there are commands to show
  72     // and potentially configure.
  73     document.querySelector('.extension-commands-config').hidden =
  74         !hasAnyCommands;
  75
  76     $('no-commands').hidden = hasAnyCommands;
  77     overlay.extensionCommandList_.classList.toggle(
  78         'empty-extension-commands-list', !hasAnyCommands);
  79   };
  80
  81   // Export
  82   return {
  83     ExtensionCommandsOverlay: ExtensionCommandsOverlay
  84   };
  85 });