/*

* Copyright (c) 2006 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:  CMnrpGeocodingService class definition

*

*/

#ifndef MNRP_GEOCODINGSERVICE_H

#define MNRP_GEOCODINGSERVICE_H

#include "mngeocodingservicebase.h"

class CPosLandmark;

class CMnrpEngine;

/** Implementation of geocoding service (KMnAppGeocodingService). 

 *	It uses CIdle to simulate asynchronous processing. All the geocoding

 *	job is done using the CMnrpEngine class.

 */

class CMnrpGeocodingService : public CMnGeocodingServiceBase

    {

    public :

        static CMnrpGeocodingService* NewL( CMnrpEngine& aEngine );

    protected :

        CMnrpGeocodingService( CMnrpEngine& aEngine );

        virtual ~CMnrpGeocodingService();

        void ConstructL();

		/** Prevents parallel asynchronous requests */

        void LeaveIfBusyL();

        /** Starts processing of new request by starting CIdle.*/

        void StartProcessingL();

        /** Callback for CIdle. Parameter is the pointer to this. */

        static TInt GeocodingProcessingCallBack( TAny* aPtr );

        /** Non-leaving part of geocoding. Calls FinishProcessingL and if

         *	it leaves, completes client's request with error.*/

        void HandleGeocodingCompleted();

        /** Does the geocoding and completes user's request.*/

        void FinishProcessingL();

        /** Asks user to select one of best Coord to Addr matches */

        CPosLandmark* LetUserSelectBestMatchL( const CPosLandmark& aReference );

    protected: // from CMnGeocodingServiceBase

        /** Handles client's request for finding address by given coordinate. */

        void HandleFindAddressByCoordinateL( const CPosLandmark& aLandmark );

        /** Handles client's request for finding coordinate by given address. */

        void HandleFindCoordinateByAddressL( const CPosLandmark& aLandmark );

        /** Handles client's request for finding coordinate by given address. */

        void HandleFindCoordinateByAddressL( const TDesC& aAddress );

    protected: // from CMnServiceBase

        /** Reports that client cancelled request */

        void DoCancel();

    private:

        CMnrpEngine&            iEngine;

        enum TServiceType

            {

            ENone,

            ECoordToAddr,

            EAddrToCoord,

            EPlainToCoord

            };

        /** Type of last received request to make correct request to Engine */    

        TServiceType            iCurrentService;

    	/** Keeps client's data */

        CPosLandmark*           iLandmark;

    	/** Keeps client's data */

        HBufC*                  iPlainAddress;

        /** Keeps client's option */

        TBool                   iDialogAllowed;

		/** Asynchronous geocoding processor */        

        CIdle*                  iProcessor;

    };

#endif // MNRP_GEOCODINGSERVICE_H