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// 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_
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