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/*
* 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
#include "core/page/Page.h"
#include "core/page/PageLifecycleObserver.h"
#include "modules/geolocation/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 : public Supplement<Page>, public PageLifecycleObserver {
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();
// Inherited from PageLifecycleObserver.
virtual void pageVisibilityChanged() OVERRIDE;
static const char* supplementName();
static GeolocationController* from(Page* page) { return static_cast<GeolocationController*>(Supplement<Page>::from(page, supplementName())); }
private:
GeolocationController(Page*, GeolocationClient*);
void startUpdatingIfNeeded();
void stopUpdatingIfNeeded();
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;
bool m_isClientUpdating;
};
} // namespace WebCore
#endif // GeolocationController_h
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