text: /*
   * Copyright (C) 2009 Apple Inc. All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in the
   *    documentation and/or other materials provided with the distribution.
   *
   * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
   * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
   * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
   * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
   * THE POSSIBILITY OF SUCH DAMAGE.
   */
  
  #ifndef GeolocationController_h
  #define GeolocationController_h
  
  #if ENABLE(CLIENT_BASED_GEOLOCATION)
  
  #include "Geolocation.h"
  #include <wtf/HashSet.h>
  #include <wtf/Noncopyable.h>
  #include <wtf/RefPtr.h>
  
  namespace WebCore {
  
  class GeolocationClient;
  class GeolocationError;
  class GeolocationPosition;
  class Page;
  
  class GeolocationController {
      WTF_MAKE_NONCOPYABLE(GeolocationController);
  public:
      ~GeolocationController();
  
      static PassOwnPtr<GeolocationController> create(Page*, GeolocationClient*);
  
      void addObserver(Geolocation*, bool enableHighAccuracy);
      void removeObserver(Geolocation*);
  
      void requestPermission(Geolocation*);
      void cancelPermissionRequest(Geolocation*);
  
      void positionChanged(GeolocationPosition*);
      void errorOccurred(GeolocationError*);
  
      GeolocationPosition* lastPosition();
  
      GeolocationClient* client() { return m_client; }
  
  private:
      GeolocationController(Page*, GeolocationClient*);
  
      Page* m_page;
      GeolocationClient* m_client;
  
      RefPtr<GeolocationPosition> m_lastPosition;
      typedef HashSet<RefPtr<Geolocation> > ObserversSet;
      // All observers; both those requesting high accuracy and those not.
      ObserversSet m_observers;
      ObserversSet m_highAccuracyObservers;
  };
  
  } // namespace WebCore
  
  #endif // ENABLE(CLIENT_BASED_GEOLOCATION)
  
  #endif // GeolocationController_h
  