/*

* Copyright (c) 2005 Nokia Corporation and/or its subsidiary(-ies). 

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description: This is a header file for engine class of Location satellite info

*

*/

#ifndef __SATELLITEENG_H__

#define __SATELLITEENG_H__

//  INCLUDES

#include <e32base.h>

#include <s32std.h>

#include <lbs.h>

#include <lbssatellite.h>

#include "MSatelliteEng.h"

#include "msatellitemeasurementsettingobserver.h"

// FORWARD DECLARATION

class CEikonEnv;

class CSatelliteMeasurementSetting;

// CLASS DECLARATION

/**

 *

 */

NONSHARABLE_CLASS( CSatelliteEng ) : public CActive, public MSatelliteEng,

									public MSatelliteMeasurementSettingObserver

    {

    public:

        /**

         * Two-phased constructor.

         *

         * @return CSatelliteEng object.

         */

        static CSatelliteEng* NewL();

        /**

         * Destructor.

         */

        ~CSatelliteEng();

    private:

        /**

         * By default Symbian 2nd phase constructor is private.

         */

        void ConstructL();

        /**

         * C++ default constructor.

         */

        CSatelliteEng();

    public: // from CActive

        void RunL();

        void DoCancel();

        TInt RunError(TInt aError);        

    private: //from MSatelliteEng

        void SetObserver(MEngObserver& aObserver);

        void RequestSatelliteDataL( const TDesC& aNameOfRule );

        TInt GetSatelliteData(TUint aIndex, 

                              TSatelliteData& aSatelliteData) const;

		void GetPosition(TPosition& aPosition);

        void GetCourse(TCourse& aCourse);

        TLocSystemofMeasurementValues SysOfMeasurementL();

        TInt NumberOfSatellitesUsed();

        TInt NumberOfSatellites();

        void StopRequesting();

        void StartRequestingL();

        void SortVisibleSatellitesDataL();

        void UpdateIntervalL();

        void ClearSatelliteData();

        TBool IsSatelliteDataAvailable();

        void ObjectElevationAzimuth(TInt aIndex, TReal& aAzimuth, TReal& aElevation );

        void SortSatelliteDataL();

        void GetSunAzimuthElevation(TReal& aAzimuth, TReal& aElevation );

        void GetMoonAzimuthElevation(TReal& aAzimuth, TReal& aElevation );

        void Julian(TReal& aJulianDay,

        			TReal& aJulianCentury, 

        			TInt aDay,

        			TInt aMonth,

        			TInt aYear,

        			TReal universalTime);

        void TrueLongToRaDeltadec(TReal& aRa,TReal& aDd,TReal aTrueLongitude);

        TReal Kepler(TReal aE, TReal aM);

        void LocationCoordinates(TReal& aAzimuth, 

								 TReal& aElevation, 

								 TReal aTau,

								 TReal aDd, 

								 TReal aLatitude);

		TReal SideRealTime(TReal aJulianDay, 

						   TReal aJulianCentury,

						   TReal aLongitude,

						   TReal aRa);		

    private: //from MSatelliteMeasurementSettingObserver

		void HandleSysMeasureValueL();

    private:    // data

        /// Own: iServer

        RPositionServer iServer;

        /// Own: RPositioner

        RPositioner iPositioner;

        /// Own: TPositionSatelliteInfo

        TPositionSatelliteInfo iSatelliteInfo;

        /// Own: CSatelliteMeasurementSetting

        CSatelliteMeasurementSetting* iMeasurementSetting;

        /// Ref: Refrence to the observer for position notification

        MEngObserver* iObserver;

        /// Own: Start and stop requesting

        TBool iRequesting;

        /// Number of modules

        TUint iNumberOfModules;

        /// used modules index

        TInt iModuleIndex;

        /// used as an sorted index array to the satellite info data

        TFixedArray<TUint8, KPositionMaxSatellitesInView> iSortIndices;

        // Own: Array to sort the satellite data in increasing order of 

        // the signal strengths

        RArray<TSatelliteData> iSortedSatData;

        // Keplers constant for sun and moon position calculations

        struct TKeplers

        	{

        	struct params

        		{

        		TReal iA0;

        		TReal iA1;

        		};

        	params iM;

        	params iW;

        	params iE;

        	};

        TKeplers iKeplers[2];

    };

#endif // __SATELLITEENG_H__

// End of File