/*

* 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:  Image transaction element

*

*/

#ifndef C_IMAGETRANSACTIONELEMENT_H

#define C_IMAGETRANSACTIONELEMENT_H

#include "transactionelement.h"

class CGulIcon;

class CXnNodeAppIf;

class RFile;

namespace AiUtility

    {

    class CContentPriorityMap;

    }

namespace AiXmlUiController

{

class CKamikazeImageDecoder;    

/**

 *  @ingroup group_xmluicontroller

 * 

 *  CImageTransactionElement is a transaction element for publishing images.

 *

 *  @lib AiXmlUiMain

 */

class CImageTransactionElement : public CTransactionElement

    {

public:

    static CImageTransactionElement*

        NewL( AiUtility::CContentPriorityMap& aContentPriorityMap );

    virtual ~CImageTransactionElement();

    /**

     * Initializes this transaction element.

     *

     * @param aTarget the node to publish bitmap and mask.

     * @param aIcon the icon to publish. Ownership is transferred.

     */

    void InitializeL(CXnNodeAppIf& aTarget, CGulIcon* aIcon );

    /**

     * Initializes this transaction element from file.

     *

     * @param aTarget the node to publish bitmap.

     * @param aFile the open file handle to read bitmap data.

     */

    void InitializeL(CXnNodeAppIf& aTarget,

                     RFile& aFile);

    static TBool IsSupported( CXnNodeAppIf& aTarget );

    void Reset();

    void UpdateDataL();

private:

    CImageTransactionElement( AiUtility::CContentPriorityMap& aContentPriorityMap );

    void CheckTypeL( CXnNodeAppIf& aTarget );

private: // data

    /**

     * Icon to be published.

     * Own.

     */

    CGulIcon* iNewIcon;

    /**

     * Asynchronous image decoder. Executed and 

     * self destroyed when decoding is ready. Not own.

     */

    CKamikazeImageDecoder* iImageDecoder;

    };

} // namespace AiXmlUiController

#endif // C_IMAGETRANSACTIONELEMENT_H