| // Copyright 2013 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_LAYOUT_MANAGER_OBSERVER_H_ |
| #define ASH_SHELF_SHELF_LAYOUT_MANAGER_OBSERVER_H_ |
| |
| #include "ash/ash_export.h" |
| #include "ash/public/cpp/shelf_types.h" |
| #include "ash/shelf/shelf_background_animator.h" |
| |
| namespace ash { |
| |
| enum class AnimationChangeType; |
| |
| class ASH_EXPORT ShelfLayoutManagerObserver { |
| public: |
| virtual ~ShelfLayoutManagerObserver() {} |
| |
| // Called when the target ShelfLayoutManager will be deleted. |
| virtual void WillDeleteShelfLayoutManager() {} |
| |
| // Called when the visibility change is scheduled. |
| virtual void WillChangeVisibilityState(ShelfVisibilityState new_state) {} |
| |
| // Called when the auto hide state is changed. |
| virtual void OnAutoHideStateChanged(ShelfAutoHideState new_state) {} |
| |
| // Called when shelf background animation is started. |
| virtual void OnBackgroundUpdated(ShelfBackgroundType background_type, |
| AnimationChangeType change_type) {} |
| }; |
| |
| } // namespace ash |
| |
| #endif // ASH_SHELF_SHELF_LAYOUT_MANAGER_OBSERVER_H_ |