Add APIs to the client plugin to re-map and trap key events.

remoting/client/plugin/chromoting_instance.h

 // 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.
 
 // TODO(ajwong): We need to come up with a better description of the
 // responsibilities for each thread.
 
 #ifndef REMOTING_CLIENT_PLUGIN_CHROMOTING_INSTANCE_H_
 #define REMOTING_CLIENT_PLUGIN_CHROMOTING_INSTANCE_H_
 
 #include <string>
 
 #include "base/gtest_prod_util.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "ppapi/c/pp_instance.h"
 #include "ppapi/c/pp_rect.h"
 #include "ppapi/c/pp_resource.h"
 #include "ppapi/cpp/var.h"
 
 // Windows defines 'PostMessage', so we have to undef it before we
 // include instance_private.h
 #if defined(PostMessage)
 #undef PostMessage
 #endif
 
 #include "ppapi/cpp/private/instance_private.h"
 #include "remoting/base/scoped_thread_proxy.h"
 #include "remoting/client/client_context.h"
+#include "remoting/client/key_event_mapper.h"
 #include "remoting/client/plugin/pepper_plugin_thread_delegate.h"
 #include "remoting/proto/event.pb.h"
 #include "remoting/protocol/clipboard_stub.h"
 #include "remoting/protocol/connection_to_host.h"
 
 namespace base {
 class DictionaryValue;
 }  // namespace base
 
 namespace pp {
@@ skipping 94 matching lines @@
   // Convenience wrapper to get the ChromotingScriptableObject.
   ChromotingScriptableObject* GetScriptableObject();
 
   // Message handlers for messages that come from JavaScript. Called
   // from HandleMessage() and ChromotingScriptableObject.
   void Connect(const ClientConfig& config);
   void Disconnect();
   void OnIncomingIq(const std::string& iq);
   void ReleaseAllKeys();
   void InjectKeyEvent(const protocol::KeyEvent& event);
+  void RemapKey(uint32 in_usb_keycode, uint32 out_usb_keycode);
+  void TrapKey(uint32 usb_keycode, bool trap);
   void SendClipboardItem(const std::string& mime_type, const std::string& item);
 
   // Return statistics record by ChromotingClient.
   // If no connection is currently active then NULL will be returned.
   ChromotingStats* GetStats();
 
   // Registers a global log message handler that redirects the log output to
   // our plugin instance.
   // This is called by the plugin's PPP_InitializeModule.
   // Note that no logging will be processed unless a ChromotingInstance has been
@@ skipping 15 matching lines @@
   static bool LogToUI(int severity, const char* file, int line,
                       size_t message_start, const std::string& str);
 
  private:
   FRIEND_TEST_ALL_PREFIXES(ChromotingInstanceTest, TestCaseSetup);
 
   // Helper method to post messages to the webapp.
   void PostChromotingMessage(const std::string& method,
                              scoped_ptr<base::DictionaryValue> data);
 
+  // Posts trapped keys to the web-app to handle.
+  void SendTrappedKey(uint32 usb_keycode, bool pressed);
+
   // Callback for PepperXmppProxy.
   void SendOutgoingIq(const std::string& iq);
 
   void SendPerfStats();
 
   void ProcessLogToUI(const std::string& message);
 
   bool initialized_;
 
   PepperPluginThreadDelegate plugin_thread_delegate_;
   scoped_refptr<PluginMessageLoopProxy> plugin_message_loop_;
   ClientContext context_;
   scoped_ptr<protocol::ConnectionToHost> host_connection_;
   scoped_ptr<PepperView> view_;
 
   scoped_refptr<RectangleUpdateDecoder> rectangle_decoder_;
   scoped_ptr<MouseInputFilter> mouse_input_filter_;
   scoped_ptr<protocol::InputEventTracker> input_tracker_;
+  KeyEventMapper key_mapper_;
   scoped_ptr<PepperInputHandler> input_handler_;
   scoped_ptr<ChromotingClient> client_;
 
   // XmppProxy is a refcounted interface used to perform thread-switching and
   // detaching between objects whose lifetimes are controlled by pepper, and
   // jingle_glue objects. This is used when if we start a sandboxed jingle
   // connection.
   scoped_refptr<PepperXmppProxy> xmpp_proxy_;
 
   // JavaScript interface to control this instance.
   // This wraps a ChromotingScriptableObject in a pp::Var.
   pp::Var instance_object_;
 
   scoped_ptr<ScopedThreadProxy> thread_proxy_;
 
   DISALLOW_COPY_AND_ASSIGN(ChromotingInstance);
 };
 
 }  // namespace remoting
 
 #endif  // REMOTING_CLIENT_PLUGIN_CHROMOTING_INSTANCE_H_