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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
/**
* @fileoverview
* Class handling creation and teardown of a remoting host session.
*
* This abstracts a <embed> element and controls the plugin which does the
* actual remoting work. There should be no UI code inside this class. It
* should be purely thought of as a controller of sorts.
*/
'use strict';
/** @suppress {duplicate} */
var remoting = remoting || {};
/**
* @constructor
*/
remoting.HostSession = function() {
};
/** @type {remoting.HostPlugin} */
remoting.HostSession.prototype.plugin = null;
// Note that these values are copied directly from host_script_object.h and
// must be kept in sync.
/** @enum {number} */
remoting.HostSession.State = {
UNKNOWN: -1,
DISCONNECTED: 0,
STARTING: 1,
REQUESTED_ACCESS_CODE: 2,
RECEIVED_ACCESS_CODE: 3,
CONNECTED: 4,
DISCONNECTING: 5,
ERROR: 6,
INVALID_DOMAIN_ERROR: 7
};
/**
* Create an instance of the host plugin.
* @return {remoting.HostPlugin} The new plugin instance.
*/
remoting.HostSession.createPlugin = function() {
var plugin = document.createElement('embed');
plugin.type = remoting.PLUGIN_MIMETYPE;
// Hiding the plugin means it doesn't load, so make it size zero instead.
plugin.width = 0;
plugin.height = 0;
return /** @type {remoting.HostPlugin} */ (plugin);
};
/**
* Create the host plugin and initiate a connection.
* @param {Element} container The parent element to which to add the plugin.
* @param {string} email The user's email address.
* @param {string} accessToken A valid OAuth2 access token.
* @param {function(boolean):void} onNatTraversalPolicyChanged Callback
* for notification of changes to the NAT traversal policy.
* @param {function(remoting.HostSession.State):void} onStateChanged
* Callback for notifications of changes to the host plugin's state.
* @param {function(string):void} logDebugInfo Callback allowing the plugin
* to log messages to the debug log.
*/
remoting.HostSession.prototype.createPluginAndConnect =
function(container, email, accessToken,
onNatTraversalPolicyChanged, onStateChanged, logDebugInfo) {
this.plugin = remoting.HostSession.createPlugin();
container.appendChild(this.plugin);
this.plugin.onNatTraversalPolicyChanged = onNatTraversalPolicyChanged;
this.plugin.onStateChanged = onStateChanged;
this.plugin.logDebugInfo = logDebugInfo;
this.plugin.localize(chrome.i18n.getMessage);
this.plugin.connect(email, 'oauth2:' + accessToken);
};
/**
* Get the access code generated by the host plugin. Valid only after the
* plugin state is RECEIVED_ACCESS_CODE.
* @return {string} The access code.
*/
remoting.HostSession.prototype.getAccessCode = function() {
return this.plugin.accessCode;
};
/**
* Get the lifetime for the access code. Valid only after the plugin state is
* RECEIVED_ACCESS_CODE.
* @return {number} The access code lifetime, in seconds.
*/
remoting.HostSession.prototype.getAccessCodeLifetime = function() {
return this.plugin.accessCodeLifetime;
};
/**
* Get the email address of the connected client. Valid only after the plugin
* state is CONNECTED.
* @return {string} The client's email address.
*/
remoting.HostSession.prototype.getClient = function() {
return this.plugin.client;
};
/**
* Disconnect the client.
* @return {void} Nothing.
*/
remoting.HostSession.prototype.disconnect = function() {
this.plugin.disconnect();
};
/**
* Remove the plugin element from the document.
* @return {void} Nothing.
*/
remoting.HostSession.prototype.removePlugin = function() {
this.plugin.parentNode.removeChild(this.plugin);
};
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