remoting/webapp/app_remoting/js/ar_background.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 /** @type {chrome.app.window.AppWindow} */
   6 var mainWindow = null;
   7
   8 /**
   9  * The main window cannot delete its context menu entries on close because it
  10  * is being torn down at that point and doesn't have access to the necessary
  11  * APIs. Instead, it notifies the background page of the entries it creates,
  12  * and the background pages deletes them when the window is closed.
  13  *
  14  * @type {!Object}
  15  */
  16 var contextMenuIds = {};
  17
  18 /** @param {chrome.app.runtime.LaunchData=} opt_launchData */
  19 function createWindow(opt_launchData) {
  20   // If there is already a window, give it focus.
  21   if (mainWindow) {
  22     mainWindow.focus();
  23     return;
  24   }
  25
  26   var typed_screen = /** @type {{availWidth: number, availHeight: number}} */
  27       (screen);
  28
  29   var windowAttributes = {
  30     resizable: false,
  31     frame: remoting.platformIsMac() ? 'chrome' : 'none',
  32     bounds: {
  33       width: typed_screen.availWidth,
  34       height: typed_screen.availHeight,
  35       left: undefined,
  36       top: undefined
  37     }
  38   };
  39
  40   function onClosed() {
  41     mainWindow = null;
  42     var ids = Object.keys(contextMenuIds);
  43     for (var i = 0; i < ids.length; ++i) {
  44       chrome.contextMenus.remove(ids[i]);
  45     }
  46     contextMenuIds = {};
  47   };
  48
  49   /** @param {chrome.app.window.AppWindow} appWindow */
  50   function onCreate(appWindow) {
  51     // Set the global window.
  52     mainWindow = appWindow;
  53
  54     // Clean up the windows sub-menu when the application quits.
  55     appWindow.onClosed.addListener(onClosed);
  56   };
  57
  58   // TODO(garykac) Add code to switch between dev and prod shared modules.
  59   chrome.app.window.create(
  60       '_modules/koejkfhmphamcgafjmkellhnekdkopod/main.html',
  61       windowAttributes, onCreate);
  62 };
  63
  64 /** @param {Event} event */
  65 function onWindowMessage(event) {
  66   var method = /** @type {string} */ (event.data['method']);
  67   var id = /** @type {string} */ (event.data['id']);
  68   switch (method) {
  69     case 'addContextMenuId':
  70       contextMenuIds[id] = true;
  71       break;
  72     case 'removeContextMenuId':
  73       delete contextMenuIds[id];
  74       break;
  75   }
  76 };
  77
  78 chrome.app.runtime.onLaunched.addListener(createWindow);
  79 window.addEventListener('message', onWindowMessage, false);