ash/system/audio/tray_volume.h

   1 // Copyright (c) 2012 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_AUDIO_TRAY_VOLUME_H_
   6 #define ASH_SYSTEM_AUDIO_TRAY_VOLUME_H_
   7 #pragma once
   8
   9 #include "ash/system/audio/audio_observer.h"
  10 #include "ash/system/tray/system_tray_item.h"
  11 #include "base/memory/scoped_ptr.h"
  12
  13 namespace ash {
  14 namespace internal {
  15
  16 namespace tray {
  17 class VolumeView;
  18 }
  19
  20 class TrayVolume : public SystemTrayItem,
  21                    public AudioObserver {
  22  public:
  23   TrayVolume();
  24   virtual ~TrayVolume();
  25
  26  private:
  27   // Overridden from SystemTrayItem.
  28   virtual views::View* CreateTrayView(user::LoginStatus status) OVERRIDE;
  29   virtual views::View* CreateDefaultView(user::LoginStatus status) OVERRIDE;
  30   virtual views::View* CreateDetailedView(user::LoginStatus status) OVERRIDE;
  31   virtual void DestroyTrayView() OVERRIDE;
  32   virtual void DestroyDefaultView() OVERRIDE;
  33   virtual void DestroyDetailedView() OVERRIDE;
  34
  35   // Overridden from AudioObserver.
  36   virtual void OnVolumeChanged(float percent) OVERRIDE;
  37
  38   scoped_ptr<tray::VolumeView> volume_view_;
  39
  40   DISALLOW_COPY_AND_ASSIGN(TrayVolume);
  41 };
  42
  43 }  // namespace internal
  44 }  // namespace ash
  45
  46 #endif  // ASH_SYSTEM_AUDIO_TRAY_VOLUME_H_