content/browser/renderer_host/gamepad_browser_message_filter.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.

#ifndef CONTENT_BROWSER_RENDERER_HOST_GAMEPAD_BROWSER_MESSAGE_FILTER_H_
#define CONTENT_BROWSER_RENDERER_HOST_GAMEPAD_BROWSER_MESSAGE_FILTER_H_

#include "base/compiler_specific.h"
#include "base/memory/shared_memory.h"
#include "content/browser/gamepad/gamepad_consumer.h"
#include "content/public/browser/browser_message_filter.h"

namespace content {

class GamepadService;
class RenderProcessHost;

class GamepadBrowserMessageFilter :
    public BrowserMessageFilter,
    public GamepadConsumer {
 public:
  GamepadBrowserMessageFilter();

  // BrowserMessageFilter implementation.
  virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;

  // GamepadConsumer implementation.
  virtual void OnGamepadConnected(
      unsigned index,
      const blink::WebGamepad& gamepad) OVERRIDE;
  virtual void OnGamepadDisconnected(
      unsigned index,
      const blink::WebGamepad& gamepad) OVERRIDE;

 private:
  virtual ~GamepadBrowserMessageFilter();

  void OnGamepadStartPolling(base::SharedMemoryHandle* renderer_handle);
  void OnGamepadStopPolling();

  bool is_started_;

  DISALLOW_COPY_AND_ASSIGN(GamepadBrowserMessageFilter);
};

}  // namespace content

#endif  // CONTENT_BROWSER_RENDERER_HOST_GAMEPAD_BROWSER_MESSAGE_FILTER_H_