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// Copyright 2018 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_NULL_WINDOW_TARGETER_H_
#define UI_AURA_NULL_WINDOW_TARGETER_H_
#include "ui/aura/aura_export.h"
#include "ui/aura/window_targeter.h"
namespace aura {
// NullWindowTargeter can be installed on a root window to prevent it from
// dispatching events such as during shutdown.
class AURA_EXPORT NullWindowTargeter : public WindowTargeter {
public:
NullWindowTargeter();
~NullWindowTargeter() override;
// EventTargeter:
ui::EventTarget* FindTargetForEvent(ui::EventTarget* root,
ui::Event* event) override;
ui::EventTarget* FindNextBestTarget(ui::EventTarget* previous_target,
ui::Event* event) override;
private:
DISALLOW_COPY_AND_ASSIGN(NullWindowTargeter);
};
} // namespace aura
#endif // UI_AURA_NULL_WINDOW_TARGETER_H_
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