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  * This class manages all the message windows (remoting.MessageWindow).
  12  * @param {base.WindowMessageDispatcher} windowMessageDispatcher
  13  * @constructor
  14  * @implements {base.Disposable}
  15  */
  16 remoting.MessageWindowManager = function(windowMessageDispatcher) {
  17   /**
  18    * @type {!Object<number, remoting.MessageWindow>}
  19    * @private
  20    */
  21   this.messageWindows_ = {};
  22
  23   /**
  24    * The next window id to auto-assign.
  25    * @private {number}
  26    */
  27   this.nextId_ = 1;
  28
  29   /** @private {base.WindowMessageDispatcher} */
  30   this.windowMessageDispatcher_ = windowMessageDispatcher;
  31
  32   this.windowMessageDispatcher_.registerMessageHandler(
  33       'message-window', this.onMessage_.bind(this));
  34 };
  35
  36 remoting.MessageWindowManager.prototype.dispose = function() {
  37   this.windowMessageDispatcher_.unregisterMessageHandler('message-window');
  38 };
  39
  40 /**
  41  * @param {remoting.MessageWindow} window The window to associate
  42  *     with the window id.
  43  * @return {number} The window id.
  44  */
  45 remoting.MessageWindowManager.prototype.addMessageWindow = function(window) {
  46   var id = ++this.nextId_;
  47   this.messageWindows_[id] = window;
  48   return id;
  49 };
  50
  51 /**
  52  * @param {number} id The window id.
  53  * @return {remoting.MessageWindow}
  54  */
  55 remoting.MessageWindowManager.prototype.getMessageWindow = function(id) {
  56   return this.messageWindows_[id];
  57 };
  58
  59 /**
  60  * @param {number} id The window id to delete.
  61  */
  62 remoting.MessageWindowManager.prototype.deleteMessageWindow = function(id) {
  63   delete this.messageWindows_[id];
  64 };
  65
  66 /**
  67  * Close all of the registered MessageWindows
  68  */
  69 remoting.MessageWindowManager.prototype.closeAllMessageWindows = function() {
  70   /** @type {Array<remoting.MessageWindow>} */
  71   var windows = [];
  72   // Make a list of the windows to close.
  73   // We don't delete the window directly in this loop because close() can
  74   // call deleteMessageWindow which will update messageWindows_.
  75   for (var win_id in this.messageWindows_) {
  76     /** @type {remoting.MessageWindow} */
  77     var win = this.getMessageWindow(parseInt(win_id, 10));
  78     console.assert(win != null, 'Unknown window id ' + win_id + '.');
  79     windows.push(win);
  80   }
  81   for (var i = 0; i < windows.length; i++) {
  82     /** @type {remoting.MessageWindow} */(windows[i]).close();
  83   }
  84 };
  85
  86 /**
  87  * Dispatch a message box result to the appropriate callback.
  88  *
  89  * @param {Event} event
  90  * @private
  91  */
  92 remoting.MessageWindowManager.prototype.onMessage_ = function(event) {
  93   console.assert(typeof event.data === 'object',
  94                  'Unexpected data. Expected object, got ' + event.data + '.');
  95   console.assert(event.data['source'] == 'message-window',
  96                 'Bad event source: ' +
  97                 /** @type {string} */ (event.data['source']) + '.');
  98
  99   if (event.data['command'] == 'messageWindowResult') {
 100     var id = /** @type {number} */ (event.data['id']);
 101     var result = /** @type {number} */ (event.data['result']);
 102
 103     if (typeof(id) != 'number' || typeof(result) != 'number') {
 104       console.log('Poorly formatted id or result');
 105       return;
 106     }
 107
 108     var messageWindow = this.getMessageWindow(id);
 109     if (!messageWindow) {
 110       console.log('Ignoring unknown message window id:', id);
 111       return;
 112     }
 113
 114     messageWindow.handleResult(result);
 115     messageWindow.close();
 116   }
 117 };
 118
 119 /** @type {remoting.MessageWindowManager} */
 120 remoting.messageWindowManager = null;