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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_POWER_SCREEN_LOCK_OBSERVER_H_
      6 #define CHROME_BROWSER_CHROMEOS_POWER_SCREEN_LOCK_OBSERVER_H_
      7 
      8 #include "base/basictypes.h"
      9 #include "base/compiler_specific.h"
     10 #include "chromeos/dbus/session_manager_client.h"
     11 
     12 namespace chromeos {
     13 
     14 // A class to observe screen lock events and dispatch onScreenUnlocked extension
     15 // API events.
     16 class ScreenLockObserver : public SessionManagerClient::Observer {
     17  public:
     18   // This class registers/unregisters itself as an observer in ctor/dtor.
     19   ScreenLockObserver();
     20   virtual ~ScreenLockObserver();
     21 
     22   // SessionManagerClient::Observer override.
     23   virtual void UnlockScreen() OVERRIDE;
     24  private:
     25   DISALLOW_COPY_AND_ASSIGN(ScreenLockObserver);
     26 };
     27 
     28 }  // namespace chromeos
     29 
     30 #endif  // CHROME_BROWSER_CHROMEOS_POWER_SCREEN_LOCK_OBSERVER_H_
     31