chrome/browser/resources/uber/uber_page_manager_observer.js

   1 // Copyright 2014 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 cr.define('uber', function() {
   6   var PageManager = cr.ui.pageManager.PageManager;
   7
   8   /**
   9    * A PageManager observer that updates the uber page.
  10    * @constructor
  11    * @implements {cr.ui.pageManager.PageManager.Observer}
  12    */
  13   function PageManagerObserver() {}
  14
  15   PageManagerObserver.prototype = {
  16     __proto__: PageManager.Observer.prototype,
  17
  18     /**
  19      * Informs the uber page when a top-level overlay is opened or closed.
  20      * @param {cr.ui.pageManager.Page} page The page that is being shown or was
  21      *     hidden.
  22      * @override
  23      */
  24     onPageVisibilityChanged: function(page) {
  25       if (PageManager.isTopLevelOverlay(page)) {
  26         if (page.visible)
  27           uber.invokeMethodOnParent('beginInterceptingEvents');
  28         else
  29           uber.invokeMethodOnParent('stopInterceptingEvents');
  30       }
  31     },
  32
  33     /**
  34      * Uses uber to set the title.
  35      * @param {string} title The title to set.
  36      * @override
  37      */
  38     updateTitle: function(title) {
  39       uber.setTitle(title);
  40     },
  41
  42     /**
  43      * Pushes the current page onto the history stack, replacing the current
  44      * entry if appropriate.
  45      * @param {string} path The path of the page to push onto the stack.
  46      * @param {boolean} replace If true, allow no history events to be created.
  47      * @override
  48      */
  49     updateHistory: function(path, replace) {
  50       var historyFunction = replace ? uber.replaceState : uber.pushState;
  51       historyFunction({}, path);
  52     },
  53   };
  54
  55   // Export
  56   return {
  57     PageManagerObserver: PageManagerObserver
  58   };
  59 });