1// Copyright (c) 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_CHILD_POWER_MONITOR_BROADCAST_SOURCE_H_
6#define CONTENT_CHILD_POWER_MONITOR_BROADCAST_SOURCE_H_
7
8#include "base/power_monitor/power_monitor_source.h"
9#include "content/common/content_export.h"
10#include "ipc/ipc_channel.h"
11
12namespace IPC {
13class MessageFilter;
14}
15
16namespace content {
17
18class PowerMessageFilter;
19
20// Receives Power Monitor IPC messages sent from the browser process and relays
21// them to the PowerMonitor of the current process.
22class CONTENT_EXPORT PowerMonitorBroadcastSource :
23    public base::PowerMonitorSource {
24 public:
25  explicit PowerMonitorBroadcastSource();
26  virtual ~PowerMonitorBroadcastSource();
27
28  IPC::MessageFilter* GetMessageFilter();
29
30 private:
31  friend class PowerMessageFilter;
32
33  virtual bool IsOnBatteryPowerImpl() OVERRIDE;
34
35  void OnPowerStateChange(bool on_battery_power);
36  void OnSuspend();
37  void OnResume();
38
39  bool last_reported_battery_power_state_;
40  scoped_refptr<PowerMessageFilter> message_filter_;
41
42  DISALLOW_COPY_AND_ASSIGN(PowerMonitorBroadcastSource);
43};
44
45}  // namespace content
46
47#endif  // CONTENT_CHILD_POWER_MONITOR_MESSAGE_FILTER_H_
48