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/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
  14 namespace IPC {
  15   class Sender;
  16 }
  17
  18 namespace content {
  19
  20 // A class used to monitor the power state change and communicate it to child
  21 // processes via IPC.
  22 class 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_