| // Copyright 2017 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_AURA_MUS_FOCUS_SYNCHRONIZER_OBSERVER_H_ |
| #define UI_AURA_MUS_FOCUS_SYNCHRONIZER_OBSERVER_H_ |
| |
| #include "ui/aura/aura_export.h" |
| |
| namespace aura { |
| class Window; |
| |
| namespace client { |
| class FocusClient; |
| } |
| |
| // FocusSynchronizerObserver gets notified when the active focus client and the |
| // window it's associated with (active focus client root) maintained by |
| // FocusSynchronizer changed. To get notified when the actual focused window |
| // gets changed, use FocusChangeObserver instead. |
| class AURA_EXPORT FocusSynchronizerObserver { |
| public: |
| // Called from FocusSynchronizer::SetActiveFocusClient() to notify its |
| // observers of active focus client and active focus client root changes. |
| virtual void OnActiveFocusClientChanged(client::FocusClient* focus_client, |
| Window* focus_client_root) {} |
| |
| protected: |
| virtual ~FocusSynchronizerObserver() {} |
| }; |
| |
| } // namespace aura |
| |
| #endif // UI_AURA_MUS_FOCUS_SYNCHRONIZER_OBSERVER_H_ |