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- // Copyright 2016 The Chromium Authors. All rights reserved.
- // Use of this source code is governed by a BSD-style license that can be
- // found in the LICENSE file.
- #ifndef ASH_SHELF_SHELF_LOCKING_MANAGER_H_
- #define ASH_SHELF_SHELF_LOCKING_MANAGER_H_
- #include "ash/ash_export.h"
- #include "ash/public/cpp/session/session_observer.h"
- #include "ash/public/cpp/shelf_types.h"
- #include "ash/wm/lock_state_observer.h"
- namespace ash {
- class Shelf;
- // ShelfLockingManager observes screen and session events to align the shelf at
- // the bottom of the screen when the screen is locked.
- class ASH_EXPORT ShelfLockingManager : public SessionObserver,
- public LockStateObserver {
- public:
- explicit ShelfLockingManager(Shelf* shelf);
- ShelfLockingManager(const ShelfLockingManager&) = delete;
- ShelfLockingManager& operator=(const ShelfLockingManager&) = delete;
- ~ShelfLockingManager() override;
- bool is_locked() const { return session_locked_ || screen_locked_; }
- void set_stored_alignment(ShelfAlignment value) { stored_alignment_ = value; }
- ShelfAlignment stored_alignment() const { return stored_alignment_; }
- // SessionObserver:
- void OnLockStateChanged(bool locked) override;
- void OnSessionStateChanged(session_manager::SessionState state) override;
- // LockStateObserver:
- void OnLockStateEvent(EventType event) override;
- private:
- // Update the shelf state for session and screen lock changes.
- void UpdateLockedState();
- Shelf* const shelf_;
- bool session_locked_ = false;
- bool screen_locked_ = false;
- ShelfAlignment stored_alignment_ = ShelfAlignment::kBottomLocked;
- ScopedSessionObserver scoped_session_observer_;
- };
- } // namespace ash
- #endif // ASH_SHELF_SHELF_LOCKING_MANAGER_H_
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