WebCore/platform/android/GeolocationServiceAndroid.h

/*
 * 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. ``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
 * 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 GeolocationServiceAndroid_h
#define GeolocationServiceAndroid_h

#include "GeolocationService.h"
#include "Timer.h"
#include <wtf/OwnPtr.h>
#include <wtf/PassRefPtr.h>
#include <wtf/RefPtr.h>

namespace WebCore {

    // The GeolocationServiceBridge is the bridge to the Java implementation of
    // the Geolocation service. It is an implementation detail of
    // GeolocationServiceAndroid.
    class GeolocationServiceBridge;

    class GeolocationServiceAndroid : public GeolocationService {
    public:
        static GeolocationService* create(GeolocationServiceClient*);

        GeolocationServiceAndroid(GeolocationServiceClient*);
        virtual ~GeolocationServiceAndroid() {};

        virtual bool startUpdating(PositionOptions*);
        virtual void stopUpdating();

        virtual Geoposition* lastPosition() const { return m_lastPosition.get(); }
        virtual PositionError* lastError() const { return m_lastError.get(); }

        // Android-specific
        void newPositionAvailable(PassRefPtr<Geoposition>);
        void newErrorAvailable(PassRefPtr<PositionError>);
        void timerFired(Timer<GeolocationServiceAndroid>* timer);

    private:
        static bool isPositionMovement(Geoposition* position1, Geoposition* position2);
        static bool isPositionMoreAccurate(Geoposition* position1, Geoposition* position2);
        static bool isPositionMoreTimely(Geoposition* position1, Geoposition* position2);

        Timer<GeolocationServiceAndroid> m_timer;
        RefPtr<Geoposition> m_lastPosition;
        RefPtr<PositionError> m_lastError;
        OwnPtr<GeolocationServiceBridge> m_javaBridge;
    };

} // namespace WebCore

#endif // GeolocationServiceAndroid_h