Touch Events capability negotiation

remoting/webapp/crd/js/client_plugin_impl.js

 // 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 that wraps low-level details of interacting with the client plugin.
  *
  * This abstracts a <embed> element and controls the plugin which does
  * the actual remoting work. It also handles differences between
@@ skipping 617 matching lines @@
 remoting.ClientPluginImpl.prototype.sendClipboardItem =
     function(mimeType, item) {
   if (!this.hasFeature(remoting.ClientPlugin.Feature.SEND_CLIPBOARD_ITEM))
     return;
   this.plugin_.postMessage(JSON.stringify(
       { method: 'sendClipboardItem',
         data: { mimeType: mimeType, item: item }}));
 };
 
 /**
+ * Notifies the plugin that touch events should be handled by the plugin.
+ *
+ * @return {void} Nothing.
+ */
+remoting.ClientPluginImpl.prototype.enableTouchEvents = function() {
+  this.plugin_.postMessage(
+      JSON.stringify({method: 'enableTouchEvents', data: {}}));

[Wez, 2015/03/30 17:10:07]

This makes enabling touch events a one-way function - once disabled you can
never disable them.

If you allow a bool enable/disable flag then we'd have the option of switching
touch events on or off based on user preferences, UX state, etc mid-session.

[Rintaro Kuroiwa, 2015/04/08 03:27:43]

Done.

+};
+
+/**
  * Notifies the host that the client has the specified size and pixel density.
  *
  * @param {number} width The available client width in DIPs.
  * @param {number} height The available client height in DIPs.
  * @param {number} device_scale The number of device pixels per DIP.
  */
 remoting.ClientPluginImpl.prototype.notifyClientResolution =
     function(width, height, device_scale) {
   this.hostDesktop_.resize(width, height, device_scale);
 };
@@ skipping 208 matching lines @@
 remoting.DefaultClientPluginFactory.prototype.preloadPlugin = function() {
   if (remoting.settings.CLIENT_PLUGIN_TYPE != 'pnacl') {
     return;
   }
 
   var plugin = remoting.ClientPluginImpl.createPluginElement_();
   plugin.addEventListener(
       'loadend', function() { document.body.removeChild(plugin); }, false);
   document.body.appendChild(plugin);
 };