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// Copyright 2016 The Chromium Authors
// 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"
#include "base/memory/raw_ptr.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_in_session_alignment(ShelfAlignment value) {
in_session_alignment_ = value;
}
ShelfAlignment in_session_alignment() const { return in_session_alignment_; }
ShelfAutoHideBehavior in_session_auto_hide_behavior() const {
return in_session_auto_hide_behavior_;
}
// 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();
const raw_ptr<Shelf> shelf_;
bool session_locked_ = false;
bool screen_locked_ = false;
// In session shelf alignment. This is used for setting shelf to/from
// temporary `kBottomLocked` alignment.
ShelfAlignment in_session_alignment_ = ShelfAlignment::kBottomLocked;
// In session shelf auto hide behavior. This is used for work area insects
// calculation for application windows.
ShelfAutoHideBehavior in_session_auto_hide_behavior_ =
ShelfAutoHideBehavior::kNever;
ScopedSessionObserver scoped_session_observer_;
};
} // namespace ash
#endif // ASH_SHELF_SHELF_LOCKING_MANAGER_H_
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