/*

* 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:  CMnrpNaviModel class definition

*

*/

#ifndef MNRP_NAVIMODEL_H

#define MNRP_NAVIMODEL_H

#include <coecntrl.h>

#include "mnrppositionrequest.h"

class CMnrpEngine;

class CPosLandmark;

/** Model observer class */

class MNaviModelObserver

    {

    public:

        virtual void HandleModelUpdateL() =0;

    };

/** Navigation view model. 

 *	Prepares data to be shown on navigation view

 */

class CMnrpNaviModel : public CBase, public MMnrpPositionObserver

    {

    public:

        static CMnrpNaviModel* NewL( MNaviModelObserver& aObserver, CMnrpEngine& aEngine );

		/** Called by service class to inform that client has changed 

		 *	navigation target */

        void SetDestinationL( const CPosLandmark& aNewDestination );

		/** List item information */

        class CListItem : public CBase

            {

            public:

                static CListItem* NewL( 

                	const TDesC& aItemHeader, 

                	const TDesC& aItemValue );

                ~CListItem();

                const TDesC& Header() { return *iHeader; };

                const TDesC& Value() { return *iValue; };

            private:

            	/** List item header */

                HBufC* iHeader;

            	/** List item text */

                HBufC* iValue;                

            };

		/** Returns list items to be shown on Navigation view */

        TArray<CListItem*> ListItemsL();

        ~CMnrpNaviModel();

    public:  // from MMnrpPositionObserver

		/** Informs navigation view that data has been changed */

        void HandlePositionRequestCompletedL( TInt aError );

    private: 

        void ConstructL();

        CMnrpNaviModel( MNaviModelObserver& aObserver, CMnrpEngine& aEngine );

    private:

        CMnrpEngine&                    iEngine;

        CMnrpPositionRequest*   		iPositionRequest;

        TPositionInfo                   iPosInfo;

        CPosLandmark*                   iDestination;

        MNaviModelObserver&             iObserver;

        RPointerArray<CListItem>        iListItems;

    };

#endif // MNRP_NAVIMODEL_H