/*

* Copyright (c) 2002-2004 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:  Visitor class interface 

*

*/

#ifndef MXN_DOM_VISITOR_H

#define MXN_DOM_VISITOR_H

// CLASS FORWARD

class CXnDomNode;

// CLASS DECLARATION

/**

*  Visitor class modifies DOM node element's data.

*

*  @lib xndomvisitor.dll

*  @since Series 60 3.1

*/

class MXnDomVisitor

    {

    public: // New functions

        /**

        * Check in-memory plugin version.

        * @return ETrue if version match

        */

        virtual TBool IsVersion( const TDesC8& aVersion )=0;

        /**

        * Modifies data

        * @param aData Data to modify

        */

        virtual void ModifyDataL( CXnDomNode& aNode )=0;

        /**

        * Sets element content type (TContentType) from XnDomNode.h

        * @param aNode Node to modify

        */

        virtual void SetElementTypeL( CXnDomNode& aNode )=0;

        /**

        * Ecom passes a destructor key at the time when plugin is created

        * and requires that key when plugin is destroyed.

        * @param aKey ECom required destructor key

        */ 

        virtual void SetDtorKey( const TUid aDtorKey )=0;

        /**

        * Release resources

        */

        virtual void Release()=0;

    protected:

        /**

        * Plugin can only be destroyed by calling Release().

        */

        ~MXnDomVisitor(){};

    };

#endif      // MXN_DOM_VISITOR_H  

// End of File