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shelf_locking_manager.h
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shelf_locking_manager.h
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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/common/session/session_state_observer.h"
#include "ash/common/shell_observer.h"
#include "ash/public/cpp/shelf_types.h"
#include "ash/wm/lock_state_observer.h"
namespace ash {
class WmShelf;
// ShelfLockingManager observes screen and session events to [un]lock the shelf.
class ASH_EXPORT ShelfLockingManager : public ShellObserver,
public SessionStateObserver,
public LockStateObserver {
public:
explicit ShelfLockingManager(WmShelf* shelf);
~ShelfLockingManager() override;
bool is_locked() const { return session_locked_ || screen_locked_; }
void set_stored_alignment(ShelfAlignment value) { stored_alignment_ = value; }
// ShellObserver:
void OnLockStateChanged(bool locked) override;
// SessionStateObserver:
void SessionStateChanged(session_manager::SessionState state) override;
// LockStateObserver:
void OnLockStateEvent(EventType event) override;
private:
// Update the shelf state for session and screen lock changes.
void UpdateLockedState();
WmShelf* shelf_;
bool session_locked_ = false;
bool screen_locked_ = false;
ShelfAlignment stored_alignment_ = SHELF_ALIGNMENT_BOTTOM;
DISALLOW_COPY_AND_ASSIGN(ShelfLockingManager);
};
} // namespace ash
#endif // ASH_SHELF_SHELF_LOCKING_MANAGER_H_