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      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    * @type {remoting.WcsIqClient}
     29    * @private
     30    */
     31   this.wcsIqClient_ = wcsIqClient;
     32 
     33   /**
     34    * The OAuth2 access token.
     35    * @type {string}
     36    * @private
     37    */
     38   this.token_ = token;
     39 
     40   /**
     41    * The function called when the WCS client has received a full JID.
     42    * @type {?function(string): void}
     43    * @private
     44    */
     45   this.onReady_ = onReady;
     46 
     47   /**
     48    * The full JID of the WCS client.
     49    * @type {string}
     50    * @private
     51    */
     52   this.clientFullJid_ = '';
     53 
     54   /**
     55    * A function called when an IQ stanza is received.
     56    * @param {string} stanza The IQ stanza.
     57    * @private
     58    */
     59   this.onIq_ = function(stanza) {};
     60 
     61   // Handle messages from the WcsIqClient.
     62   this.wcsIqClient_.setOnMessage(this.onMessage_.bind(this));
     63 
     64   // Start the WcsIqClient.
     65   this.wcsIqClient_.connectChannel();
     66 };
     67 
     68 /**
     69  * Passes an access token to the WcsIqClient, if the token has been updated.
     70  *
     71  * @param {string} tokenNew A (possibly updated) access token.
     72  * @return {void} Nothing.
     73  */
     74 remoting.Wcs.prototype.updateAccessToken = function(tokenNew) {
     75   if (tokenNew != this.token_) {
     76     this.token_ = tokenNew;
     77     this.wcsIqClient_.updateAccessToken(this.token_);
     78   }
     79 };
     80 
     81 /**
     82  * Handles a message coming from the WcsIqClient.
     83  *
     84  * @param {Array.<string>} msg The message.
     85  * @return {void} Nothing.
     86  * @private
     87  */
     88 remoting.Wcs.prototype.onMessage_ = function(msg) {
     89   if (msg[0] == 'is') {
     90     this.onIq_(msg[1]);
     91   } else if (msg[0] == 'cfj') {
     92     this.clientFullJid_ = msg[1];
     93     console.log('Received JID: ' + this.clientFullJid_);
     94     if (this.onReady_) {
     95       this.onReady_(this.clientFullJid_);
     96       this.onReady_ = null;
     97     }
     98   }
     99 };
    100 
    101 /**
    102  * Gets the full JID of the WCS client.
    103  *
    104  * @return {string} The full JID.
    105  */
    106 remoting.Wcs.prototype.getJid = function() {
    107   return this.clientFullJid_;
    108 };
    109 
    110 /**
    111  * Sends an IQ stanza.
    112  *
    113  * @param {string} stanza An IQ stanza.
    114  * @return {void} Nothing.
    115  */
    116 remoting.Wcs.prototype.sendIq = function(stanza) {
    117   this.wcsIqClient_.sendIq(stanza);
    118 };
    119 
    120 /**
    121  * Sets the function called when an IQ stanza is received.
    122  *
    123  * @param {function(string): void} onIq The function called when an IQ stanza
    124  *     is received.
    125  * @return {void} Nothing.
    126  */
    127 remoting.Wcs.prototype.setOnIq = function(onIq) {
    128   this.onIq_ = onIq;
    129 };
    130