| // Copyright 2014 The Chromium Authors |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef UI_AURA_SCOPED_WINDOW_TARGETER_H_ |
| #define UI_AURA_SCOPED_WINDOW_TARGETER_H_ |
| |
| #include <memory> |
| |
| #include "base/memory/raw_ptr.h" |
| #include "ui/aura/window_observer.h" |
| |
| namespace aura { |
| |
| class Window; |
| class WindowTargeter; |
| |
| // ScopedWindowTargeter is used to temporarily replace the event-targeter for a |
| // window. Upon construction, it installs a new targeter on the window, and upon |
| // destruction, it restores the previous event-targeter on the window. |
| class AURA_EXPORT ScopedWindowTargeter : public WindowObserver { |
| public: |
| ScopedWindowTargeter(Window* window, |
| std::unique_ptr<WindowTargeter> new_targeter); |
| |
| ScopedWindowTargeter(const ScopedWindowTargeter&) = delete; |
| ScopedWindowTargeter& operator=(const ScopedWindowTargeter&) = delete; |
| |
| ~ScopedWindowTargeter() override; |
| |
| WindowTargeter* old_targeter() { return old_targeter_.get(); } |
| |
| private: |
| // WindowObserver: |
| void OnWindowDestroyed(Window* window) override; |
| |
| raw_ptr<Window> window_; |
| std::unique_ptr<WindowTargeter> old_targeter_; |
| }; |
| |
| } // namespace aura |
| |
| #endif // UI_AURA_SCOPED_WINDOW_TARGETER_H_ |