Home | History | Annotate | Download | only in power 
      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_POWER_POWER_BUTTON_OBSERVER_H_
      6 #define CHROME_BROWSER_CHROMEOS_POWER_POWER_BUTTON_OBSERVER_H_
      7 
      8 #include "base/basictypes.h"
      9 #include "base/compiler_specific.h"
     10 #include "chromeos/dbus/power_manager_client.h"
     11 #include "chromeos/dbus/session_manager_client.h"
     12 #include "content/public/browser/notification_observer.h"
     13 #include "content/public/browser/notification_registrar.h"
     14 
     15 namespace chromeos {
     16 
     17 // Listens for power button, login, and screen lock events and passes them to
     18 // the Aura shell's PowerButtonController class.
     19 class PowerButtonObserver : public content::NotificationObserver,
     20                             public PowerManagerClient::Observer,
     21                             public SessionManagerClient::Observer {
     22  public:
     23   // This class registers/unregisters itself as an observer in ctor/dtor.
     24   PowerButtonObserver();
     25   virtual ~PowerButtonObserver();
     26 
     27  private:
     28   // content::NotificationObserver implementation:
     29   virtual void Observe(int type,
     30                        const content::NotificationSource& source,
     31                        const content::NotificationDetails& details) OVERRIDE;
     32 
     33   // PowerManagerObserver implementation:
     34   virtual void PowerButtonEventReceived(
     35       bool down, const base::TimeTicks& timestamp) OVERRIDE;
     36 
     37   content::NotificationRegistrar registrar_;
     38 
     39   DISALLOW_COPY_AND_ASSIGN(PowerButtonObserver);
     40 };
     41 
     42 }  // namespace chromeos
     43 
     44 #endif  // CHROME_BROWSER_CHROMEOS_POWER_POWER_BUTTON_OBSERVER_H_
     45