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****************************************************************************/

#ifndef QGEOPOSITIONINFOSOURCE_NPE_BACKEND_H
#define QGEOPOSITIONINFOSOURCE_NPE_BACKEND_H

//
//  W A R N I N G
//  -------------
//
// This file is not part of the Qt API.  It exists purely as an
// implementation detail.  This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//

#include <qgeopositioninfosource.h>
#include <mt-client/variantstream.h>
#include <private/jsondb-strings_p.h>
#include <qlocalsocket.h>
#include <qeventloop.h>
#include <qtimer.h>

Q_USE_JSONDB_NAMESPACE

class QGeoPositionInfoSourceNpeBackend : public QGeoPositionInfoSource
{
    Q_OBJECT

public:
    QGeoPositionInfoSourceNpeBackend(QObject *parent = 0);
    bool init();
    void setUpdateInterval(int interval);
    void setPreferredPositioningMethods(PositioningMethods sources);
    QGeoPositionInfo lastKnownPosition(bool fromSatellitePositioningMethodsOnly = false) const;
    PositioningMethods supportedPositioningMethods() const;
    int minimumUpdateInterval() const;

public Q_SLOTS:
    void startUpdates();
    void stopUpdates();
    void requestUpdate(int timeout = 5000);

private:
    QLocalSocket* mSocket;
    VariantStream* mStream;
    int minInterval;
    uint supportedMethods;
    QGeoPositionInfo lastPosition;
    bool locationOngoing;
    bool timeoutSent;
    QTimer* requestTimer;
    void shutdownRequestSession();

Q_SIGNALS:
    void minimumUpdateIntervalReceived();
    void supportedPositioningMethodsReceived();
    void lastKnownPositionReceived();

private Q_SLOTS:
    void onStreamReceived(const QVariantMap& map);
    void onSocketConnected();
    void onSocketDisconnected();
    void requestTimerExpired();
};

#endif // QGEOPOSITIONINFOSOURCE_NPE_BACKEND_H