Hangouts remote desktop part IV - Host installer

remoting/webapp/host_install_dialog.js

 // Copyright 2014 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.
 
 'use strict';
 
 /** @suppress {duplicate} */
 var remoting = remoting || {};
 
 /**
@@ skipping 10 matching lines @@
       'host-install-retry');
 
   this.onOkClickedHandler_ = this.onOkClicked_.bind(this);
   this.onCancelClickedHandler_ = this.onCancelClicked_.bind(this);
   this.onRetryClickedHandler_ = this.onRetryClicked_.bind(this);
 
   this.continueInstallButton_.disabled = false;
   this.cancelInstallButton_.disabled = false;
 
   /** @private*/
-  this.onDoneHandler_ = function() {}
+  this.onDoneHandler_ = function() {};
 
   /** @param {remoting.Error} error @private */
-  this.onErrorHandler_ = function(error) {}
-};
+  this.onErrorHandler_ = function(error) {};
 
-/** @type {Object.<string,string>} */
-remoting.HostInstallDialog.hostDownloadUrls = {
-  'Win32' : 'http://dl.google.com/dl/edgedl/chrome-remote-desktop/' +
-      'chromeremotedesktophost.msi',
-  'MacIntel' : 'https://dl.google.com/chrome-remote-desktop/' +
-      'chromeremotedesktop.dmg',
-  'Linux x86_64' : 'https://dl.google.com/linux/direct/' +
-      'chrome-remote-desktop_current_amd64.deb',
-  'Linux i386' : 'https://dl.google.com/linux/direct/' +
-      'chrome-remote-desktop_current_i386.deb'
+  /**
+   * @type {remoting.HostInstaller}
+   * @private
+   */
+  this.hostInstaller_ = new remoting.HostInstaller();
 };
 
 /**
  * Starts downloading host components and shows installation prompt.
  *
  * @param {function():void} onDone Callback called when user clicks Ok,
  * presumably after installing the host. The handler must verify that the host
  * has been installed and call tryAgain() otherwise.
  * @param {function(remoting.Error):void} onError Callback called when user
  *    clicks Cancel button or there is some other unexpected error.
  * @return {void}
  */
 remoting.HostInstallDialog.prototype.show = function(onDone, onError) {
   this.continueInstallButton_.addEventListener(
       'click', this.onOkClickedHandler_, false);
   this.cancelInstallButton_.addEventListener(
       'click', this.onCancelClickedHandler_, false);
   remoting.setMode(remoting.AppMode.HOST_INSTALL_PROMPT);
 
-  var hostPackageUrl =
-      remoting.HostInstallDialog.hostDownloadUrls[navigator.platform];
-  if (hostPackageUrl === undefined) {
-    this.onErrorHandler_(remoting.Error.CANCELLED);
-    return;
-  }
-
-  // Start downloading the package.
-  if (remoting.isAppsV2) {
-    // TODO(jamiewalch): Use chrome.downloads when it is available to
-    // apps v2 (http://crbug.com/174046)
-    window.open(hostPackageUrl);
-  } else {
-    window.location = hostPackageUrl;
-  }
-
   /** @type {function():void} */
   this.onDoneHandler_ = onDone;
 
   /** @type {function(remoting.Error):void} */
   this.onErrorHandler_ = onError;
-}
+
+  /** @type {remoting.HostInstaller} */
+  var hostInstaller = new remoting.HostInstaller();
+
+  /** @type {remoting.HostInstallDialog} */
+  var that = this;
+
+  this.hostInstaller_.downloadAndWaitForInstall().then(function() {
+    that.continueInstallButton_.click();
+    that.hostInstaller_.cancel();
+  }, function(){
+    that.onErrorHandler_(remoting.Error.CANCELLED);
+    that.hostInstaller_.cancel();
+  });
+};
 
 /**
  * In manual host installation, onDone handler must call this method if it
  * detects that the host components are still unavailable. The same onDone
  * and onError callbacks will be used when user clicks Ok or Cancel.
  */
 remoting.HostInstallDialog.prototype.tryAgain = function() {
   this.retryInstallButton_.addEventListener(
       'click', this.onRetryClickedHandler_.bind(this), false);
   remoting.setMode(remoting.AppMode.HOST_INSTALL_PENDING);
   this.continueInstallButton_.disabled = false;
   this.cancelInstallButton_.disabled = false;
 };
 
 remoting.HostInstallDialog.prototype.onOkClicked_ = function() {
   this.continueInstallButton_.removeEventListener(
       'click', this.onOkClickedHandler_, false);
   this.cancelInstallButton_.removeEventListener(
       'click', this.onCancelClickedHandler_, false);
   this.continueInstallButton_.disabled = true;
   this.cancelInstallButton_.disabled = true;
 
   this.onDoneHandler_();
-}
+};
 
 remoting.HostInstallDialog.prototype.onCancelClicked_ = function() {
   this.continueInstallButton_.removeEventListener(
       'click', this.onOkClickedHandler_, false);
   this.cancelInstallButton_.removeEventListener(
       'click', this.onCancelClickedHandler_, false);
+  this.hostInstaller_.cancel();
   this.onErrorHandler_(remoting.Error.CANCELLED);
-}
+};
 
 remoting.HostInstallDialog.prototype.onRetryClicked_ = function() {
   this.retryInstallButton_.removeEventListener(
       'click', this.onRetryClickedHandler_.bind(this), false);
   this.continueInstallButton_.addEventListener(
       'click', this.onOkClickedHandler_, false);
   this.cancelInstallButton_.addEventListener(
       'click', this.onCancelClickedHandler_, false);
   remoting.setMode(remoting.AppMode.HOST_INSTALL_PROMPT);
 };