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#ifndef QMLBACKENDAO_H

#define QMLBACKENDAO_H

#include <e32base.h>    // For CActive, link against: euser.lib

#include <lbs.h>

#include <lbscommon.h>

#include <lbssatellite.h>

#include "qgeopositioninfosource.h"

//#include "qgeopositioninfosources60.h"

QTM_BEGIN_NAMESPACE

class CQGeoPositionInfoSourceS60 ;

class CQGeoSatelliteInfoSourceS60;

// Types of request

enum RequestType {

    RegularUpdate = 1,  // Regular updates

    OnceUpdate,     // request update

    DeviceStatus       // device updates

};

//

class CQMLBackendAO : public CActive

{

public:

    // Cancel and destroy

    ~CQMLBackendAO();

    // Two-phased constructor.

    static CQMLBackendAO* NewL(QObject *aRequester,

                               RequestType  aRequestType, TPositionModuleId  aModId = TUid::Uid(0)

                              );

    // Two-phased constructor.

    static CQMLBackendAO* NewLC(QObject *aRequester,

                                RequestType  aRequestType, TPositionModuleId  aModID);

    // checks any pending request in activeobject

    bool isRequestPending();

    // Async call to get notifications about device status.

    void notifyDeviceStatus(TPositionModuleStatusEventBase &aStatusEvent) ;

    // requesting for position update once

    void requestUpdate(int aTimeout);

    // cancels an outstanding update request

    void cancelUpdate();

    // Sets an interval in millisecs for regular notifications

    int setUpdateInterval(int aMilliSec);

    void startUpdates();

private:

    // C++ constructor

    CQMLBackendAO();

    // Second-phase constructor

    TInt ConstructL(QObject *aRequester, RequestType  aRequestType,

                    TPositionModuleId  aModId);

    // Device Notifications are handled

    void handleDeviceNotification(int aError);

    // regular position notifications are handled

    void handlePosUpdateNotification(int aError);

    void CancelAll();

    bool initializePosInfo();

private:

    // From CActive

    // Handle completion

    void RunL();

    // How to cancel me

    void DoCancel();

    // Override to handle leaves from RunL(). Default implementation causes

    // the active scheduler to panic.

    int RunError(int aError);

private:

    HPositionGenericInfo *mPosInfo;

    // Request is a device or a regular

    CQGeoPositionInfoSourceS60 *mRequester;

    //Request is a device for Satellite update only

    CQGeoSatelliteInfoSourceS60 *mRequesterSatellite;

    // Request type once, regular, device

    RequestType  mRequestType;

    // Positioning Information

    RPositioner mPositioner;

    TPositionSatelliteInfo mPosSatInfo;

};

QTM_END_NAMESPACE

#endif // QMLBACKENDAO_H