| // Copyright 2015 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_METRICS_DESKTOP_TASK_SWITCH_METRIC_RECORDER_H_ |
| #define ASH_METRICS_DESKTOP_TASK_SWITCH_METRIC_RECORDER_H_ |
| |
| #include "ash/ash_export.h" |
| #include "base/memory/raw_ptr.h" |
| #include "ui/wm/public/activation_change_observer.h" |
| |
| namespace ash { |
| |
| // Tracks metrics for task switches caused by the user activating a task window |
| // by clicking or tapping on it. |
| class ASH_EXPORT DesktopTaskSwitchMetricRecorder |
| : public ::wm::ActivationChangeObserver { |
| public: |
| DesktopTaskSwitchMetricRecorder(); |
| |
| DesktopTaskSwitchMetricRecorder(const DesktopTaskSwitchMetricRecorder&) = |
| delete; |
| DesktopTaskSwitchMetricRecorder& operator=( |
| const DesktopTaskSwitchMetricRecorder&) = delete; |
| |
| ~DesktopTaskSwitchMetricRecorder() override; |
| |
| // wm::ActivationChangeObserver: |
| void OnWindowActivated( |
| ::wm::ActivationChangeObserver::ActivationReason reason, |
| aura::Window* gained_active, |
| aura::Window* lost_active) override; |
| |
| private: |
| // Tracks the last active task window. |
| raw_ptr<aura::Window, DanglingUntriaged> last_active_task_window_; |
| }; |
| |
| } // namespace ash |
| |
| #endif // ASH_METRICS_DESKTOP_TASK_SWITCH_METRIC_RECORDER_H_ |