| // 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 after a non-primary root window is created. |
| virtual void OnRootWindowAdded(aura::Window* root_window) {} |
| |
| // Invoked after the shelf has been created for |root_window|. |
| virtual void OnShelfCreatedForRootWindow(aura::Window* root_window) {} |
| |
| // 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) {} |
| |
| // Called when the overview mode is about to be started (before the windows |
| // get re-arranged). |
| virtual void OnOverviewModeStarting() {} |
| |
| // Called before the overview mode is ending (before the windows get arranged |
| // to their final position). |
| virtual void OnOverviewModeEnding() {} |
| |
| // Called when the always maximize mode has started. Windows might still |
| // animate though. |
| virtual void OnMaximizeModeStarted() {} |
| |
| // Called when the always maximize mode has ended. Windows may still be |
| // animating but have been restored. |
| virtual void OnMaximizeModeEnded() {} |
| |
| protected: |
| virtual ~ShellObserver() {} |
| }; |
| |
| } // namespace ash |
| |
| #endif // ASH_SHELL_OBSERVER_H_ |