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