ash/system/chromeos/rotation/tray_rotation_lock.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_CHROMEOS_ROTATION_TRAY_ROTATION_LOCK_H_
   6 #define ASH_SYSTEM_CHROMEOS_ROTATION_TRAY_ROTATION_LOCK_H_
   7
   8 #include "ash/shell_observer.h"
   9 #include "ash/system/tray/tray_image_item.h"
  10
  11 namespace ash {
  12
  13 namespace tray {
  14 class RotationLockDefaultView;
  15 }  // namespace tray
  16
  17 // TrayRotationLock is a provider of views for the SystemTray. Both a tray view
  18 // and a default view are provided. Each view indicates the current state of
  19 // the rotation lock for the display which it appears on. The default view can
  20 // be interacted with, it toggles the state of the rotation lock.
  21 // TrayRotationLock is only available on the primary display.
  22 class ASH_EXPORT TrayRotationLock : public TrayImageItem,
  23                                     public ShellObserver {
  24  public:
  25   explicit TrayRotationLock(SystemTray* system_tray);
  26   virtual ~TrayRotationLock();
  27
  28   // SystemTrayItem:
  29   virtual views::View* CreateDefaultView(user::LoginStatus status) OVERRIDE;
  30
  31   // ShellObserver:
  32   virtual void OnMaximizeModeStarted() OVERRIDE;
  33   virtual void OnMaximizeModeEnded() OVERRIDE;
  34
  35  protected:
  36   // TrayImageItem:
  37   virtual bool GetInitialVisibility() OVERRIDE;
  38
  39  private:
  40   friend class TrayRotationLockTest;
  41
  42   // True if this has been created by a SystemTray on the primary display.
  43   bool on_primary_display_;
  44
  45   DISALLOW_COPY_AND_ASSIGN(TrayRotationLock);
  46 };
  47
  48 }  // namespace ash
  49
  50 #endif  // ASH_SYSTEM_CHROMEOS_ROTATION_TRAY_ROTATION_LOCK_H_