Upstream version 7.36.149.0
[platform/framework/web/crosswalk.git] / src / ash / system / chromeos / power / video_activity_notifier.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 ASH_SYSTEM_CHROMEOS_POWER_VIDEO_ACTIVITY_NOTIFIER_H_
6 #define ASH_SYSTEM_CHROMEOS_POWER_VIDEO_ACTIVITY_NOTIFIER_H_
7
8 #include "ash/wm/video_detector.h"
9 #include "base/basictypes.h"
10 #include "base/compiler_specific.h"
11 #include "base/time/time.h"
12
13 namespace ash {
14
15 // Notifies the power manager when a video is playing.
16 class VideoActivityNotifier : public VideoDetectorObserver,
17                               public ShellObserver {
18  public:
19   explicit VideoActivityNotifier(VideoDetector* detector);
20   virtual ~VideoActivityNotifier();
21
22   // VideoDetectorObserver implementation.
23   virtual void OnVideoDetected(bool is_fullscreen) OVERRIDE;
24
25   // ShellObserver implementation.
26   virtual void OnLockStateChanged(bool locked) OVERRIDE;
27
28  private:
29   VideoDetector* detector_;  // not owned
30
31   // Last time that the power manager was notified.
32   base::TimeTicks last_notify_time_;
33
34   // True if the screen is currently locked.
35   bool screen_is_locked_;
36
37   DISALLOW_COPY_AND_ASSIGN(VideoActivityNotifier);
38 };
39
40 }  // namespace ash
41
42 #endif  // ASH_SYSTEM_CHROMEOS_POWER_VIDEO_ACTIVITY_NOTIFIER_H_