ash/system/audio/tray_audio.h

   1 // Copyright 2014 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_AUDIO_H_
   6 #define ASH_SYSTEM_AUDIO_TRAY_AUDIO_H_
   7
   8 #include "ash/system/audio/audio_observer.h"
   9 #include "ash/system/tray/tray_image_item.h"
  10 #include "base/memory/scoped_ptr.h"
  11
  12 namespace ash {
  13
  14 namespace system {
  15 class TrayAudioDelegate;
  16 }
  17
  18 namespace tray {
  19 class VolumeView;
  20 }
  21
  22 class TrayAudio : public TrayImageItem,
  23                   public AudioObserver {
  24  public:
  25   TrayAudio(SystemTray* system_tray,
  26             scoped_ptr<system::TrayAudioDelegate> audio_delegate);
  27   virtual ~TrayAudio();
  28
  29   static bool ShowAudioDeviceMenu();
  30
  31  protected:
  32   virtual void Update();
  33
  34   scoped_ptr<system::TrayAudioDelegate> audio_delegate_;
  35   tray::VolumeView* volume_view_;
  36
  37   // True if VolumeView should be created for accelerator pop up;
  38   // Otherwise, it should be created for detailed view in ash tray bubble.
  39   bool pop_up_volume_view_;
  40
  41  private:
  42   // Overridden from TrayImageItem.
  43   virtual bool GetInitialVisibility() OVERRIDE;
  44
  45   // Overridden from SystemTrayItem.
  46   virtual views::View* CreateDefaultView(user::LoginStatus status) OVERRIDE;
  47   virtual views::View* CreateDetailedView(user::LoginStatus status) OVERRIDE;
  48   virtual void DestroyDefaultView() OVERRIDE;
  49   virtual void DestroyDetailedView() OVERRIDE;
  50   virtual bool ShouldHideArrow() const OVERRIDE;
  51   virtual bool ShouldShowShelf() const OVERRIDE;
  52
  53   // Overridden from AudioObserver.
  54   virtual void OnOutputVolumeChanged() OVERRIDE;
  55   virtual void OnOutputMuteChanged() OVERRIDE;
  56   virtual void OnAudioNodesChanged() OVERRIDE;
  57   virtual void OnActiveOutputNodeChanged() OVERRIDE;
  58   virtual void OnActiveInputNodeChanged() OVERRIDE;
  59
  60   DISALLOW_COPY_AND_ASSIGN(TrayAudio);
  61 };
  62
  63 }  // namespace ash
  64
  65 #endif  // ASH_SYSTEM_AUDIO_TRAY_AUDIO_H_