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      1 // Copyright (c) 2012 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_KIOSK_MODE_KIOSK_MODE_IDLE_LOGOUT_H_
      6 #define CHROME_BROWSER_CHROMEOS_KIOSK_MODE_KIOSK_MODE_IDLE_LOGOUT_H_
      7 
      8 #include "ash/wm/user_activity_observer.h"
      9 #include "base/basictypes.h"
     10 #include "base/compiler_specific.h"
     11 #include "base/timer/timer.h"
     12 #include "content/public/browser/notification_observer.h"
     13 #include "content/public/browser/notification_registrar.h"
     14 
     15 namespace chromeos {
     16 
     17 class KioskModeIdleLogout : public ash::UserActivityObserver,
     18                             public content::NotificationObserver {
     19  public:
     20   static void Initialize();
     21 
     22   KioskModeIdleLogout();
     23   virtual ~KioskModeIdleLogout();
     24 
     25  private:
     26   friend class KioskModeIdleLogoutTest;
     27 
     28   // Really initialize idle logout when KioskModeHelper is initialized.
     29   void Setup();
     30 
     31   // Overridden from content::NotificationObserver:
     32   virtual void Observe(int type,
     33                        const content::NotificationSource& source,
     34                        const content::NotificationDetails& details) OVERRIDE;
     35 
     36   // UserActivityObserver overrides:
     37   virtual void OnUserActivity(const ui::Event* event) OVERRIDE;
     38 
     39   // Begins listening for user activity and calls ResetTimer().
     40   void Start();
     41 
     42   // Resets |timer_| to fire when the logout dialog should be shown.
     43   void ResetTimer();
     44 
     45   // Invoked by |timer_| to display the logout dialog.
     46   void OnTimeout();
     47 
     48   content::NotificationRegistrar registrar_;
     49 
     50   base::OneShotTimer<KioskModeIdleLogout> timer_;
     51 
     52   DISALLOW_COPY_AND_ASSIGN(KioskModeIdleLogout);
     53 };
     54 
     55 }  // namespace chromeos
     56 
     57 #endif  // CHROME_BROWSER_CHROMEOS_KIOSK_MODE_KIOSK_MODE_IDLE_LOGOUT_H_
     58