chrome/browser/chromeos/idle_detector.h

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CHROME_BROWSER_CHROMEOS_IDLE_DETECTOR_H_
   6 #define CHROME_BROWSER_CHROMEOS_IDLE_DETECTOR_H_
   7
   8 #include "base/basictypes.h"
   9 #include "base/callback.h"
  10 #include "base/compiler_specific.h"
  11 #include "base/time/time.h"
  12 #include "base/timer/timer.h"
  13 #include "ui/base/user_activity/user_activity_observer.h"
  14
  15 namespace chromeos {
  16
  17 class IdleDetector : public ui::UserActivityObserver {
  18  public:
  19   explicit IdleDetector(const base::Closure& on_idle_callback);
  20   ~IdleDetector() override;
  21
  22   void Start(const base::TimeDelta& timeout);
  23
  24  private:
  25   // ui::UserActivityObserver overrides:
  26   void OnUserActivity(const ui::Event* event) override;
  27
  28   // Resets |timer_| to fire when we reach our idle timeout.
  29   void ResetTimer();
  30
  31   base::OneShotTimer<IdleDetector> timer_;
  32
  33   base::Closure idle_callback_;
  34
  35   base::TimeDelta timeout_;
  36
  37   DISALLOW_COPY_AND_ASSIGN(IdleDetector);
  38 };
  39
  40 }  // namespace chromeos
  41
  42 #endif  // CHROME_BROWSER_CHROMEOS_IDLE_DETECTOR_H_