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// Copyright (c) 2012 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_SHELL_OBSERVER_H_
#define ASH_SHELL_OBSERVER_H_
#include "ash/ash_export.h"
#include "ash/system/user/login_status.h"
namespace aura {
class Window;
}
namespace ash {
class ASH_EXPORT ShellObserver {
public:
// Invoked after the screen's work area insets changes.
virtual void OnDisplayWorkAreaInsetsChanged() {}
// Invoked when the user logs in.
virtual void OnLoginStateChanged(user::LoginStatus status) {}
// Invoked when the application is exiting.
virtual void OnAppTerminating() {}
// Invoked when the screen is locked (after the lock window is visible) or
// unlocked.
virtual void OnLockStateChanged(bool locked) {}
// Invoked when the shelf alignment in |root_window| is changed.
virtual void OnShelfAlignmentChanged(aura::Window* root_window) {}
// Invoked when the projection touch HUD is toggled.
virtual void OnTouchHudProjectionToggled(bool enabled) {}
// Invoked when entering or exiting fullscreen mode in |root_window|.
virtual void OnFullscreenStateChanged(bool is_fullscreen,
aura::Window* root_window) {}
protected:
virtual ~ShellObserver() {}
};
} // namespace ash
#endif // ASH_SHELL_OBSERVER_H_
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