/*

* Copyright (c) 2005-2007 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:  Data buffer transaction

*

*/

#ifndef C_DATABUFFERTRANSACTIONELEMENT_H

#define C_DATABUFFERTRANSACTIONELEMENT_H

#include "transactionelement.h"

namespace AiUtility

    {

    class CContentPriorityMap;

    }

class CXnNodeAppIf;

namespace AiXmlUiController

{

/**

 *  @ingroup group_xmluicontroller

 * 

 * CDataBufferTransactionElement corresponds one text content publishing operation.

 *

 *  @lib AiXmlUiMain

 */

class CDataBufferTransactionElement : public CTransactionElement

    {

public:  // Constructors and destructor

    static CDataBufferTransactionElement*

        NewL( AiUtility::CContentPriorityMap& aContentPriorityMap );

    virtual ~CDataBufferTransactionElement();

// New functions

    /**

    * Initializes this transaction element to publish content aData

    * to node aTarget.

    *

    * @param aTarget - the target of publishing.

    * @param aData - the content. 

    */

    void InitializeL(CXnNodeAppIf& aTarget, const TDesC8& aData);

    /**

    * Initializes this transaction element to publish content aData

    * to node aTarget.

    *

    * @param aTarget - the target of publishing.

    * @param aData - the content. 

    * @param aCid - the content id.

    * @param aIndex - the content index.

    */    

    void InitializeL(CXnNodeAppIf& aTarget, const TDesC8& aData, 

        const TDesC& aCid, TInt aIndex);

    /**

     * Checks if given content type is supported by target ui element.

     *

     * @param aTarget target ui element.

     * @param aContentType content type

     * @return ETrue if content type is supported

     */

    static TBool IsSupported( CXnNodeAppIf& aTarget,

                              const TDesC8& aContentType );

// Functions from CTransactionElement

    void Reset();

    void UpdateDataL();

private:

    CDataBufferTransactionElement(

        AiUtility::CContentPriorityMap& aContentPriorityMap );

    void CheckTypeL( CXnNodeAppIf& aTarget );

    void SetDataL();

private:    // Data

    /**

     * New content, owned.

     */

    HBufC8* iNewData;

    /**

     * Content id, owned.

     */

    HBufC* iCid;

    /*

     * Content index

     */

    TInt iIndex;

    };

}   // namespace AiXmlUiController

#endif      // C_TEXTTRANSACTIONELEMENT_H  

//  End of File