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// Copyright 2015 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.
#include "base/compiler_specific.h"
#include "base/macros.h"
#include "ui/events/event_targeter.h"
#include "ui/events/events_export.h"
namespace ui {
// NullEventTargeter can be installed on a root window to prevent it from
// dispatching events such as during shutdown.
class EVENTS_EXPORT NullEventTargeter : public EventTargeter {
public:
NullEventTargeter();
~NullEventTargeter() override;
// EventTargeter:
EventTarget* FindTargetForEvent(EventTarget* root, Event* event) override;
EventTarget* FindNextBestTarget(EventTarget* previous_target,
Event* event) override;
private:
DISALLOW_COPY_AND_ASSIGN(NullEventTargeter);
};
} // namespace ui
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