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#include "ash/wm/maximize_mode/maximize_mode_controller.h"
11
12namespace ash {
13
14namespace tray {
15class RotationLockDefaultView;
16}  // namespace tray
17
18// TrayRotationLock is a provider of views for the SystemTray. Both a tray view
19// and a default view are provided. Each view indicates the current state of
20// the rotation lock for the display which it appears on. The default view can
21// be interacted with, it toggles the state of the rotation lock.
22// TrayRotationLock is only available on the primary display.
23class ASH_EXPORT TrayRotationLock : public TrayImageItem,
24                                    public MaximizeModeController::Observer,
25                                    public ShellObserver {
26 public:
27  explicit TrayRotationLock(SystemTray* system_tray);
28  virtual ~TrayRotationLock();
29
30  // MaximizeModeController::Observer:
31  virtual void OnRotationLockChanged(bool rotation_locked) OVERRIDE;
32
33  // SystemTrayItem:
34  virtual views::View* CreateDefaultView(user::LoginStatus status) OVERRIDE;
35
36  // ShellObserver:
37  virtual void OnMaximizeModeStarted() OVERRIDE;
38  virtual void OnMaximizeModeEnded() OVERRIDE;
39
40 protected:
41  // TrayImageItem:
42  virtual bool GetInitialVisibility() OVERRIDE;
43
44 private:
45  friend class TrayRotationLockTest;
46
47  // True if |on_primary_display_|, maximize mode is enabled, and rotation is
48  // locked.
49  bool ShouldBeVisible();
50
51  // True if this has been created by a SystemTray on the primary display.
52  bool on_primary_display_;
53
54  DISALLOW_COPY_AND_ASSIGN(TrayRotationLock);
55};
56
57}  // namespace ash
58
59#endif  // ASH_SYSTEM_CHROMEOS_ROTATION_TRAY_ROTATION_LOCK_H_
60