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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 ASH_SYSTEM_TRAY_TIME_TO_CLICK_RECORDER_H_
- #define ASH_SYSTEM_TRAY_TIME_TO_CLICK_RECORDER_H_
- #include "ui/events/event_handler.h"
- namespace views {
- class View;
- } // namespace views
- namespace ash {
- // An event handler that will be installed as PreTargetHandler of |target_view|
- // to record TimeToClick metrics.
- class TimeToClickRecorder : public ui::EventHandler {
- public:
- class Delegate {
- public:
- virtual ~Delegate() {}
- // Record TimeToClick metrics. Called by TimeToClickRecorder which is a
- // PreTargetHandler of |target_view|.
- virtual void RecordTimeToClick() = 0;
- };
- TimeToClickRecorder(Delegate* delegate, views::View* target_view);
- TimeToClickRecorder(const TimeToClickRecorder&) = delete;
- TimeToClickRecorder& operator=(const TimeToClickRecorder&) = delete;
- ~TimeToClickRecorder() override = default;
- private:
- // ui::EventHandler:
- void OnEvent(ui::Event* event) override;
- Delegate* const delegate_;
- };
- } // namespace ash
- #endif // ASH_SYSTEM_TRAY_TIME_TO_CLICK_RECORDER_H_
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