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1 // Copyright 2016 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_COMMON_SHELF_SHELF_LOCKING_MANAGER_H_ | |
6 #define ASH_COMMON_SHELF_SHELF_LOCKING_MANAGER_H_ | |
7 | |
8 #include "ash/ash_export.h" | |
9 #include "ash/common/session/session_state_observer.h" | |
10 #include "ash/common/shell_observer.h" | |
11 #include "ash/common/wm/lock_state_observer.h" | |
12 #include "ash/public/cpp/shelf_types.h" | |
13 | |
14 namespace ash { | |
15 | |
16 class WmShelf; | |
17 | |
18 // ShelfLockingManager observes screen and session events to [un]lock the shelf. | |
19 class ASH_EXPORT ShelfLockingManager : public ShellObserver, | |
20 public SessionStateObserver, | |
21 public LockStateObserver { | |
22 public: | |
23 explicit ShelfLockingManager(WmShelf* shelf); | |
24 ~ShelfLockingManager() override; | |
25 | |
26 bool is_locked() const { return session_locked_ || screen_locked_; } | |
27 void set_stored_alignment(ShelfAlignment value) { stored_alignment_ = value; } | |
28 | |
29 // ShellObserver: | |
30 void OnLockStateChanged(bool locked) override; | |
31 | |
32 // SessionStateObserver: | |
33 void SessionStateChanged(session_manager::SessionState state) override; | |
34 | |
35 // LockStateObserver: | |
36 void OnLockStateEvent(EventType event) override; | |
37 | |
38 private: | |
39 // Update the shelf state for session and screen lock changes. | |
40 void UpdateLockedState(); | |
41 | |
42 WmShelf* shelf_; | |
43 bool session_locked_ = false; | |
44 bool screen_locked_ = false; | |
45 ShelfAlignment stored_alignment_ = SHELF_ALIGNMENT_BOTTOM; | |
46 | |
47 DISALLOW_COPY_AND_ASSIGN(ShelfLockingManager); | |
48 }; | |
49 | |
50 } // namespace ash | |
51 | |
52 #endif // ASH_COMMON_SHELF_SHELF_LOCKING_MANAGER_H_ | |
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