1// Copyright 2013 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#ifndef CONTENT_BROWSER_POWER_MONITOR_MESSAGE_BROADCASTER_H_
6#define CONTENT_BROWSER_POWER_MONITOR_MESSAGE_BROADCASTER_H_
7
8#include "base/basictypes.h"
9#include "base/memory/ref_counted.h"
10#include "base/power_monitor/power_observer.h"
11#include "content/common/content_export.h"
12#include "content/public/browser/browser_thread.h"
13
14namespace IPC {
15  class Sender;
16}
17
18namespace content {
19
20// A class used to monitor the power state change and communicate it to child
21// processes via IPC.
22class CONTENT_EXPORT PowerMonitorMessageBroadcaster
23    : public base::PowerObserver {
24 public:
25  explicit PowerMonitorMessageBroadcaster(IPC::Sender* sender);
26  virtual ~PowerMonitorMessageBroadcaster();
27
28  // Implement PowerObserver.
29  virtual void OnPowerStateChange(bool on_battery_power) OVERRIDE;
30  virtual void OnSuspend() OVERRIDE;
31  virtual void OnResume() OVERRIDE;
32
33 private:
34  IPC::Sender* sender_;
35
36  DISALLOW_COPY_AND_ASSIGN(PowerMonitorMessageBroadcaster);
37};
38
39}  // namespace base
40
41#endif  // CONTENT_BROWSER_POWER_MONITOR_MESSAGE_BROADCASTER_H_