/*

* Copyright (c) 2007-2008 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:   

*

*/

#ifndef C_HNMDVALUEBASE_H

#define C_HNMDVALUEBASE_H

#include <e32base.h>

class CLiwGenericParamList;

struct THnMdCommonPointers;

class TXmlEngElement;

class CHnAttributeBase;

enum THnMdValueType

    {

    EHnTextType, 

    EHnImageType

    };

/**

 * Value Base

 * 

 * Based class used for output transformation.

 * Specific classes based on information from XML make correct transformation

 * 

 * @lib hnmetadatamodel

 * @since S60 5.0

 * @ingroup group_hnmetadatamodel

 */

NONSHARABLE_CLASS(CHnMdValueBase) : public CBase

    {

public:

    /**

     * Create specific class based on parameter

     * 

     * @param aElement XML element.

     * @param aCmnPtrs Pointer to common pointer structure.

     */

    static CHnMdValueBase* CreateL( const TXmlEngElement& aElement, 

                                THnMdCommonPointers* aCmnPtrs );

    /**

     * Get value from spefic class

     * 

     * @param aQueriesResultsList query results use for dynnamic data

     * @param aPos position if data are in list format.

     * @return A pointer to the CHnAttributeBase object.

     */

    virtual CHnAttributeBase* CreateAttributeL( 

            const CLiwGenericParamList* aQueriesResultsList, TInt aPos ) = 0;

    };

#endif /*C_HNMDVALUEBASE_H*/