| // 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 THIRD_PARTY_BLINK_RENDERER_CORE_PAGE_FOCUS_CHANGED_OBSERVER_H_ |
| #define THIRD_PARTY_BLINK_RENDERER_CORE_PAGE_FOCUS_CHANGED_OBSERVER_H_ |
| |
| #include "third_party/blink/renderer/core/core_export.h" |
| #include "third_party/blink/renderer/platform/heap/handle.h" |
| |
| namespace blink { |
| |
| class LocalFrame; |
| class Page; |
| |
| class CORE_EXPORT FocusChangedObserver : public GarbageCollectedMixin { |
| public: |
| explicit FocusChangedObserver(Page*); |
| virtual void FocusedFrameChanged() = 0; |
| |
| protected: |
| bool IsFrameFocused(LocalFrame*); |
| virtual ~FocusChangedObserver() = default; |
| }; |
| |
| } // namespace blink |
| |
| #endif // THIRD_PARTY_BLINK_RENDERER_CORE_PAGE_FOCUS_CHANGED_OBSERVER_H_ |