/*

* Copyright (c) 2005,2006 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:  Represent single xmluiml attribute

*

*/

#ifndef XN_DOM_ATTRIBUTE_H

#define XN_DOM_ATTRIBUTE_H

//  INCLUDES

#include    <e32base.h>

#include    <s32strm.h>

#include    "mxndomlistitem.h"

//CLASS FORWARD

class CXnDomStringPool;

// CLASS DECLARATION

/**

*  @ingroup group_domdocument

*  Represent attribute name and value as strings. 

*

*  @lib xndomdocument.lib

*  @since Series 60 3.1

*/

class CXnDomAttribute : public CBase, public MXnDomListItem

    {

    public:  // Constructors and destructor

        /**

        * Two-phased constructor 8 bit.

        */

        IMPORT_C static CXnDomAttribute* NewL( 

            const TDesC8& aName, 

            CXnDomStringPool* aStringPool );

        /**

        * Two-phased stream constructor.

        */

        static CXnDomAttribute* NewL( 

            RReadStream& aStream, 

            CXnDomStringPool* aStringPool );

        /**

        * Destructor.

        */

        IMPORT_C virtual ~CXnDomAttribute();

    public: // New functions

        /**

        * Makes a copy from original attribute.

        * @since Series 60 3.1

        * @return Pointer to attribute. Attribute ownership is transferred to a caller

        */

        IMPORT_C CXnDomAttribute* CloneL();        

        /**

        * Makes a copy from original property.

        * @since Series 60 3.1

        * @param Original string pool clone.

        * @return Pointer to an attribute. Ownership is transferred to a caller.

        */

        CXnDomAttribute* CloneL( CXnDomStringPool& aStringPool );        

        /**

        * Get the attribute value.

        * @since Series 60 3.1

        * @return Pointer to a attribute value string. If value is not set KNullDesC8 is returned. 

        */

        IMPORT_C const TDesC8& Value();

        /**

        * Set attribute value.

        * @since Series 60 3.1

        * @param aValue Attribute string value

        */

        IMPORT_C void SetValueL( const TDesC8& aValue );

        /**

        * Get the attributes name string pool index. 

        * @since Series 60 3.1

        * @return String pool index.

        */

        IMPORT_C TInt16 NameStringPoolIndex()const;

        /**

        * Get the attributes value string pool index. 

        * @since Series 60 3.1

        * @return String pool index.

        */

        IMPORT_C TInt16 ValueStringPoolIndex()const;

        /**

         * Swap used string pool.

         * 

         * @param aStringPool   New string pool to be used.

         *                      Ownership not transferred!

         */

        IMPORT_C void SwapStringPoolL( CXnDomStringPool* aStringPool );        

    public: //From CXnDomListItem

        /**

        * Documented in CXnDomListItem::Size

        */

        IMPORT_C const TDesC8& Name();

        /**

        * Documented in CXnDomListItem::Size

        */

        TInt Size() const;

        /**

        * Documented in CXnDomListItem::Size

        */

        void ExternalizeL( RWriteStream& aStream ) const;

        /**

        * Internalize property.

        * @since Series 60 3.1

        * @param aStream Input stream

        */

        void InternalizeL( RReadStream& aStream );    

    private:

        /**

        * C++ default constructor.

        */

        CXnDomAttribute( CXnDomStringPool* aStringPool );

        /**

        * By default Symbian 2nd phase constructor is private.

        */

        void ConstructL( const TDesC8& aName );

    private:    // Data

        //String pool to get string for references, not owned

        CXnDomStringPool* iStringPool;

        //Attribute name reference

        TInt16         iNameRef;

        //Attribute value reference

        TInt16         iValueRef;

    };

#endif      // XN_DOM_ATTRIBUTE_H   

// End of File