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// Copyright 2021 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef ASH_CLIPBOARD_CONTROL_V_HISTOGRAM_RECORDER_H_
#define ASH_CLIPBOARD_CONTROL_V_HISTOGRAM_RECORDER_H_
#include "base/time/time.h"
#include "ui/events/event_handler.h"
namespace ui {
class KeyEvent;
} // namespace ui
namespace ash {
// A `Shell` pretarget `EventHandler` to record timings for users'
// accelerator-initiated pastes.
class ControlVHistogramRecorder : public ui::EventHandler {
public:
ControlVHistogramRecorder() = default;
ControlVHistogramRecorder(const ControlVHistogramRecorder&) = delete;
ControlVHistogramRecorder& operator=(const ControlVHistogramRecorder&) =
delete;
~ControlVHistogramRecorder() override = default;
// ui::EventHandler:
void OnKeyEvent(ui::KeyEvent* event) override;
private:
// If a Ctrl+V paste sequence was in progress, records an entry for the
// Ash.ClipboardHistory.ControlVHeldTime histogram and resets state so that
// new entries can be recorded. Otherwise, does nothing.
void MaybeRecordControlVHeldTime();
// The last time a user pressed Ctrl. Reset to null when V is pressed and an
// entry is recorded for the Ash.ClipboardHistory.ControlToVDelayV2 histogram.
base::TimeTicks ctrl_pressed_time_;
// The last time a user pressed V with Ctrl held. Reset to null when the paste
// sequence ends and an entry is recorded for the
// Ash.ClipboardHistory.ControlVHeldTime histogram.
base::TimeTicks ctrl_v_pressed_time_;
};
} // namespace ash
#endif // ASH_CLIPBOARD_CONTROL_V_HISTOGRAM_RECORDER_H_
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