/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is mozilla.org code.
 *
 * The Initial Developer of the Original Code is Mozilla Foundation
 * Portions created by the Initial Developer are Copyright (C) 2011
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *   Kan-Ru Chen <kchen@mozilla.com> (Original Author)
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either of the GNU General Public License Version 2 or later (the "GPL"),
 * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of either the GPL or the LGPL, and not to allow others to
 * use your version of this file under the terms of the MPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the MPL, the GPL or the LGPL.
 *
 * ***** END LICENSE BLOCK ***** */
#ifndef mozilla_dom_power_PowerManagerService_h
#define mozilla_dom_power_PowerManagerService_h

#include "nsCOMPtr.h"
#include "nsDataHashtable.h"
#include "nsHashKeys.h"
#include "nsTArray.h"
#include "nsIPowerManagerService.h"
#include "mozilla/Observer.h"
#include "Types.h"

namespace mozilla {
namespace dom {
namespace power {

class PowerManagerService
  : public nsIPowerManagerService
  , public WakeLockObserver
{
public:
  NS_DECL_ISUPPORTS
  NS_DECL_NSIPOWERMANAGERSERVICE

  static already_AddRefed<nsIPowerManagerService> GetInstance();

  void Init();

  // Implement WakeLockObserver
  void Notify(const hal::WakeLockInformation& aWakeLockInfo);

private:

  ~PowerManagerService();

  void ComputeWakeLockState(const hal::WakeLockInformation& aWakeLockInfo,
                            nsAString &aState);

  static nsRefPtr<PowerManagerService> sSingleton;

  nsTArray<nsCOMPtr<nsIDOMMozWakeLockListener> > mWakeLockListeners;
};

} // namespace power
} // namespace dom
} // namespace mozilla

#endif // mozilla_dom_power_PowerManagerService_h