content/browser/power_monitor_message_broadcaster.h

   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/power_monitor/power_observer.h"
  10 #include "content/common/content_export.h"
  11
  12 namespace IPC {
  13 class Sender;
  14 }
  15
  16 namespace content {
  17
  18 // A class used to monitor the power state change and communicate it to child
  19 // processes via IPC.
  20 class CONTENT_EXPORT PowerMonitorMessageBroadcaster
  21     : public base::PowerObserver {
  22  public:
  23   explicit PowerMonitorMessageBroadcaster(IPC::Sender* sender);
  24   ~PowerMonitorMessageBroadcaster() override;
  25
  26   // Implement PowerObserver.
  27   void OnPowerStateChange(bool on_battery_power) override;
  28   void OnSuspend() override;
  29   void OnResume() override;
  30
  31   void Init();
  32
  33  private:
  34   IPC::Sender* sender_;
  35
  36   DISALLOW_COPY_AND_ASSIGN(PowerMonitorMessageBroadcaster);
  37 };
  38
  39 }  // namespace content
  40
  41 #endif  // CONTENT_BROWSER_POWER_MONITOR_MESSAGE_BROADCASTER_H_