Refactor channel dispatchers on the host side.

remoting/protocol/host_message_dispatcher.h

-// Copyright (c) 2011 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.
-
-#ifndef REMOTING_PROTOCOL_HOST_MESSAGE_DISPATCHER_H_
-#define REMOTING_PROTOCOL_HOST_MESSAGE_DISPATCHER_H_
-
-#include "base/basictypes.h"
-#include "base/memory/scoped_ptr.h"
-#include "base/task.h"
-#include "remoting/protocol/message_reader.h"
-
-namespace remoting {
-namespace protocol {
-
-class ConnectionToClient;
-class ControlMessage;
-class EventMessage;
-class HostStub;
-class InputStub;
-class Session;
-
-// A message dispatcher used to listen for messages received in
-// protocol::Session. It dispatches messages to the corresponding
-// handler.
-//
-// Internally it contains an EventStreamReader that decodes data on
-// communications channels into protocol buffer messages.
-// EventStreamReader is registered with protocol::Session given to it.
-//
-// Object of this class is owned by ConnectionToClient to dispatch messages
-// to itself.
-class HostMessageDispatcher {
- public:
-  // Construct a message dispatcher.
-  HostMessageDispatcher();
-  virtual ~HostMessageDispatcher();
-
-  // Initialize the message dispatcher with the given connection and
-  // message handlers.
-  void Initialize(ConnectionToClient* connection,
-                  HostStub* host_stub, InputStub* input_stub);
-
- private:
-  // This method is called by |control_channel_reader_| when a control
-  // message is received.
-  void OnControlMessageReceived(ControlMessage* message,
-                                const base::Closure& done_task);
-
-  // This method is called by |event_channel_reader_| when a event
-  // message is received.
-  void OnEventMessageReceived(EventMessage* message,
-                              const base::Closure& done_task);
-
-  // MessageReader that runs on the control channel. It runs a loop
-  // that parses data on the channel and then delegates the message to this
-  // class.
-  scoped_ptr<ProtobufMessageReader<ControlMessage> > control_message_reader_;
-
-  // MessageReader that runs on the event channel.
-  scoped_ptr<ProtobufMessageReader<EventMessage> > event_message_reader_;
-
-  // Connection that this object belongs to.
-  ConnectionToClient* connection_;
-
-  // Stubs for host and input. These objects are not owned.
-  // They are called on the thread there data is received, i.e. jingle thread.
-  HostStub* host_stub_;
-  InputStub* input_stub_;
-};
-
-}  // namespace protocol
-}  // namespace remoting
-
-#endif  // REMOTING_PROTOCOL_HOST_MESSAGE_DISPATCHER_H_