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 #include "ui/gfx/display_observer.h"
  12
  13 namespace ash {
  14
  15 namespace system {
  16 class TrayAudioDelegate;
  17 }
  18
  19 namespace tray {
  20 class VolumeView;
  21 }
  22
  23 class TrayAudio : public TrayImageItem,
  24                   public AudioObserver,
  25                   public gfx::DisplayObserver {
  26  public:
  27   TrayAudio(SystemTray* system_tray,
  28             scoped_ptr<system::TrayAudioDelegate> audio_delegate);
  29   ~TrayAudio() override;
  30
  31   static bool ShowAudioDeviceMenu();
  32
  33  protected:
  34   // Overridden from gfx::DisplayObserver.
  35   void OnDisplayAdded(const gfx::Display& new_display) override;
  36   void OnDisplayRemoved(const gfx::Display& old_display) override;
  37   void OnDisplayMetricsChanged(const gfx::Display& display,
  38                                uint32_t changed_metrics) override;
  39
  40   virtual void Update();
  41
  42   scoped_ptr<system::TrayAudioDelegate> audio_delegate_;
  43   tray::VolumeView* volume_view_;
  44
  45   // True if VolumeView should be created for accelerator pop up;
  46   // Otherwise, it should be created for detailed view in ash tray bubble.
  47   bool pop_up_volume_view_;
  48
  49  private:
  50   // Overridden from TrayImageItem.
  51   bool GetInitialVisibility() override;
  52
  53   // Overridden from SystemTrayItem.
  54   views::View* CreateDefaultView(user::LoginStatus status) override;
  55   views::View* CreateDetailedView(user::LoginStatus status) override;
  56   void DestroyDefaultView() override;
  57   void DestroyDetailedView() override;
  58   bool ShouldHideArrow() const override;
  59   bool ShouldShowShelf() const override;
  60
  61   // Overridden from AudioObserver.
  62   void OnOutputNodeVolumeChanged(uint64_t node_id, double volume) override;
  63   void OnOutputMuteChanged(bool mute_on, bool system_adjust) override;
  64   void OnAudioNodesChanged() override;
  65   void OnActiveOutputNodeChanged() override;
  66   void OnActiveInputNodeChanged() override;
  67
  68   void ChangeInternalSpeakerChannelMode();
  69
  70   DISALLOW_COPY_AND_ASSIGN(TrayAudio);
  71 };
  72
  73 }  // namespace ash
  74
  75 #endif  // ASH_SYSTEM_AUDIO_TRAY_AUDIO_H_