| // 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_ |