remoting/webapp/crd/js/wcs.js

   1 /* Copyright (c) 2012 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
   6 /**
   7  * @fileoverview
   8  * A class that provides an interface to a WCS connection.
   9  */
  10
  11 'use strict';
  12
  13 /** @suppress {duplicate} */
  14 var remoting = remoting || {};
  15
  16 /** @type {remoting.Wcs} */
  17 remoting.wcs = null;
  18
  19 /**
  20  * @constructor
  21  * @param {remoting.WcsIqClient} wcsIqClient The WCS client.
  22  * @param {string} token An OAuth2 access token.
  23  * @param {function(string): void} onReady Called with the WCS client's JID.
  24  */
  25 remoting.Wcs = function(wcsIqClient, token, onReady) {
  26   /**
  27    * The WCS client.
  28    * @private {remoting.WcsIqClient}
  29    */
  30   this.wcsIqClient_ = wcsIqClient;
  31
  32   /**
  33    * The OAuth2 access token.
  34    * @private {string}
  35    */
  36   this.token_ = token;
  37
  38   /**
  39    * The function called when the WCS client has received a full JID.
  40    * @private {?function(string): void}
  41    */
  42   this.onReady_ = onReady;
  43
  44   /**
  45    * The full JID of the WCS client.
  46    * @private {string}
  47    */
  48   this.clientFullJid_ = '';
  49
  50   /**
  51    * A function called when an IQ stanza is received.
  52    * @param {string} stanza The IQ stanza.
  53    * @private
  54    */
  55   this.onIq_ = function(stanza) {};
  56
  57   // Handle messages from the WcsIqClient.
  58   this.wcsIqClient_.setOnMessage(this.onMessage_.bind(this));
  59
  60   // Start the WcsIqClient.
  61   this.wcsIqClient_.connectChannel();
  62 };
  63
  64 /**
  65  * Passes an access token to the WcsIqClient, if the token has been updated.
  66  *
  67  * @param {string} tokenNew A (possibly updated) access token.
  68  * @return {void} Nothing.
  69  */
  70 remoting.Wcs.prototype.updateAccessToken = function(tokenNew) {
  71   if (tokenNew != this.token_) {
  72     this.token_ = tokenNew;
  73     this.wcsIqClient_.updateAccessToken(this.token_);
  74   }
  75 };
  76
  77 /**
  78  * Handles a message coming from the WcsIqClient.
  79  *
  80  * @param {Array<string>} msg The message.
  81  * @return {void} Nothing.
  82  * @private
  83  */
  84 remoting.Wcs.prototype.onMessage_ = function(msg) {
  85   if (msg[0] == 'is') {
  86     this.onIq_(msg[1]);
  87   } else if (msg[0] == 'cfj') {
  88     this.clientFullJid_ = msg[1];
  89     console.log('Received JID: ' + this.clientFullJid_);
  90     if (this.onReady_) {
  91       this.onReady_(this.clientFullJid_);
  92       this.onReady_ = null;
  93     }
  94   }
  95 };
  96
  97 /**
  98  * Gets the full JID of the WCS client.
  99  *
 100  * @return {string} The full JID.
 101  */
 102 remoting.Wcs.prototype.getJid = function() {
 103   return this.clientFullJid_;
 104 };
 105
 106 /**
 107  * Sends an IQ stanza.
 108  *
 109  * @param {string} stanza An IQ stanza.
 110  * @return {void} Nothing.
 111  */
 112 remoting.Wcs.prototype.sendIq = function(stanza) {
 113   this.wcsIqClient_.sendIq(stanza);
 114 };
 115
 116 /**
 117  * Sets the function called when an IQ stanza is received.
 118  *
 119  * @param {function(string): void} onIq The function called when an IQ stanza
 120  *     is received.
 121  * @return {void} Nothing.
 122  */
 123 remoting.Wcs.prototype.setOnIq = function(onIq) {
 124   this.onIq_ = onIq;
 125 };