chrome/browser/chromeos/extensions/extension_system_event_observer.h

   1 // Copyright 2013 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_EXTENSIONS_EXTENSION_SYSTEM_EVENT_OBSERVER_H_
   6 #define CHROME_BROWSER_CHROMEOS_EXTENSIONS_EXTENSION_SYSTEM_EVENT_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
  13 namespace chromeos {
  14
  15 // Dispatches extension events in response to system events.
  16 class ExtensionSystemEventObserver : public PowerManagerClient::Observer,
  17                                      public SessionManagerClient::Observer {
  18  public:
  19   // This class registers/unregisters itself as an observer in ctor/dtor.
  20   ExtensionSystemEventObserver();
  21   virtual ~ExtensionSystemEventObserver();
  22
  23   // PowerManagerClient::Observer overrides:
  24   virtual void BrightnessChanged(int level, bool user_initiated) OVERRIDE;
  25   virtual void SystemResumed(const base::TimeDelta& sleep_duration) OVERRIDE;
  26
  27   // SessionManagerClient::Observer override.
  28   virtual void ScreenIsUnlocked() OVERRIDE;
  29
  30  private:
  31   DISALLOW_COPY_AND_ASSIGN(ExtensionSystemEventObserver);
  32 };
  33
  34 }  // namespace chromeos
  35
  36 #endif  // CHROME_BROWSER_CHROMEOS_EXTENSIONS_EXTENSION_SYSTEM_EVENT_OBSERVER_H_