remoting/webapp/base/js/message_window_manager.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 'use strict';
   6
   7 /** @suppress {duplicate} */
   8 var remoting = remoting || {};
   9
  10 /**
  11  * Namespace for window manager functions.
  12  * @type {Object}
  13  */
  14 remoting.MessageWindowManager = {};
  15
  16 /**
  17  * Mapping from window id to corresponding MessageWindow.
  18  *
  19  * @private {Object<number, remoting.MessageWindow>}
  20  */
  21 remoting.MessageWindowManager.messageWindows_ = {};
  22
  23 /**
  24  * The next window id to auto-assign.
  25  * @private {number}
  26  */
  27 remoting.MessageWindowManager.nextId_ = 1;
  28
  29 /**
  30  * @param {remoting.MessageWindow} window The window to associate
  31  *     with the window id.
  32  * @return {number} The window id.
  33  */
  34 remoting.MessageWindowManager.addMessageWindow = function(window) {
  35   var id = ++remoting.MessageWindowManager.nextId_;
  36   remoting.MessageWindowManager.messageWindows_[id] = window;
  37   return id;
  38 };
  39
  40 /**
  41  * @param {number} id The window id.
  42  * @return {remoting.MessageWindow}
  43  */
  44 remoting.MessageWindowManager.getMessageWindow = function(id) {
  45   return remoting.MessageWindowManager.messageWindows_[id];
  46 };
  47
  48 /**
  49  * @param {number} id The window id to delete.
  50  */
  51 remoting.MessageWindowManager.deleteMessageWindow = function(id) {
  52   delete remoting.MessageWindowManager.messageWindows_[id];
  53 };
  54
  55 /**
  56  * Close all of the registered MessageWindows
  57  */
  58 remoting.MessageWindowManager.closeAllMessageWindows = function() {
  59   /** @type {Array<remoting.MessageWindow>} */
  60   var windows = [];
  61   // Make a list of the windows to close.
  62   // We don't delete the window directly in this loop because close() can
  63   // call deleteMessageWindow which will update messageWindows_.
  64   for (var win_id in remoting.MessageWindowManager.messageWindows_) {
  65     /** @type {remoting.MessageWindow} */
  66     var win = remoting.MessageWindowManager.getMessageWindow(
  67         parseInt(win_id, 10));
  68     base.debug.assert(win != null);
  69     windows.push(win);
  70   }
  71   for (var i = 0; i < windows.length; i++) {
  72     /** @type {remoting.MessageWindow} */(windows[i]).close();
  73   }
  74 };
  75
  76 /**
  77  * Dispatch a message box result to the appropriate callback.
  78  *
  79  * @param {Event} event
  80  * @private
  81  */
  82 remoting.MessageWindowManager.onMessage_ = function(event) {
  83   if (typeof(event.data) != 'object') {
  84     return;
  85   }
  86
  87   if (event.data['command'] == 'messageWindowResult') {
  88     var id = /** @type {number} */ (event.data['id']);
  89     var result = /** @type {number} */ (event.data['result']);
  90
  91     if (typeof(id) != 'number' || typeof(result) != 'number') {
  92       console.log('Poorly formatted id or result');
  93       return;
  94     }
  95
  96     var messageWindow = remoting.MessageWindowManager.getMessageWindow(id);
  97     if (!messageWindow) {
  98       console.log('Ignoring unknown message window id:', id);
  99       return;
 100     }
 101
 102     messageWindow.handleResult(result);
 103     messageWindow.close();
 104   }
 105 };
 106
 107
 108 window.addEventListener('message', remoting.MessageWindowManager.onMessage_,
 109                         false);