| // 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 UI_ANDROID_WINDOW_ANDROID_OBSERVER_H_ |
| #define UI_ANDROID_WINDOW_ANDROID_OBSERVER_H_ |
| |
| #include "ui/android/ui_android_export.h" |
| |
| namespace ui { |
| |
| class UI_ANDROID_EXPORT WindowAndroidObserver { |
| public: |
| virtual void OnCompositingDidCommit() = 0; |
| virtual void OnRootWindowVisibilityChanged(bool visible) = 0; |
| virtual void OnAttachCompositor() = 0; |
| virtual void OnDetachCompositor() = 0; |
| virtual void OnAnimate(base::TimeTicks frame_begin_time) {} |
| |
| // Note that activity state callbacks will only be made if the WindowAndroid |
| // has been explicitly subscribed to receive them. The observer instance |
| // should account for whether or not this is the case. |
| virtual void OnActivityStopped() = 0; |
| virtual void OnActivityStarted() = 0; |
| |
| protected: |
| virtual ~WindowAndroidObserver() {} |
| }; |
| |
| } // namespace ui |
| |
| #endif // UI_ANDROID_WINDOW_ANDROID_OBSERVER_H_ |