blob: 54c8e4dd6bd1a56ed1cf2d95c48b7b7fe34c1fdb [file] [log] [blame]
// 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.
#include "ash/ash_export.h"
#include "ash/public/cpp/shelf_types.h"
#include "ash/session/session_observer.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 {
explicit ShelfLockingManager(Shelf* shelf);
~ShelfLockingManager() override;
bool is_locked() const { return session_locked_ || screen_locked_; }
void set_stored_alignment(ShelfAlignment value) { stored_alignment_ = value; }
// SessionObserver:
void OnLockStateChanged(bool locked) override;
void OnSessionStateChanged(session_manager::SessionState state) override;
// LockStateObserver:
void OnLockStateEvent(EventType event) override;
// Update the shelf state for session and screen lock changes.
void UpdateLockedState();
Shelf* shelf_;
bool session_locked_ = false;
bool screen_locked_ = false;
ShelfAlignment stored_alignment_;
ScopedSessionObserver scoped_session_observer_;
} // namespace ash