/*

* 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:  Private snapshot item header

*

*/

#ifndef __SNAPSHOTITEM_H__

#define __SNAPSHOTITEM_H__

// INCLUDES

#include <msvids.h>

#include <nsmlsnapshotitem.h>

#include "smsdataproviderdefs.h"

typedef TBuf<KMaxFolderNameLength> TFolderName;

// CLASS DECLARATION

/**

* @brief TSnapshotItem

* This class represents a single item in the ChangeFinder snapshot.

* It's derived from the generic snapshot item and extended

* to contain the read/unread information, which is mandatory when 

* partial update of the messages is required.

*/

class TSnapshotItem : public TNSmlSnapshotItem

	{ 

public:

	/**

    * Constructor

    */

	TSnapshotItem();

	/**

    * Constructor

    * 

    * @param aItemId   IN: id of the item.

    * @param aParent   IN: parent item, 0 as default.

    * @param aUnread   IN: read/unread information, the default is read.

    */

	TSnapshotItem( const TSmlDbItemUid& aItemId, const TSmlDbItemUid& aParent = 0, TBool aUnread = EFalse );

	/**

    * Writes the item to a stream.

    * 

    * @param aStream   IN: a reference to a stream, where this item is to be written.

    */

	void ExternalizeL( RWriteStream& aStream ) const;

	/**

    * Reads item from a stream.

    * 

    * @param aStream   IN: a reference to a stream, where this item is read from.

    */

	void InternalizeL( RReadStream& aStream );	

	/**

    * Sets the read flag

    * 

    * @param aState   IN: a new state.

    */

	void SetUnread( TBool aState ); 

	/**

    * Sets the read flag

    * 

    * @return TBool, ETrue if the item is not read and EFalse if it has been read.

    */

	TBool Unread() const;	

	void SetFolderNameL( const TDesC& aFolderName );

	const TDesC& FolderName() const;

private:

    /**

    * Read / Unread information

    */

	TBool       iUnread;

	TFolderName iFolderName;

    };

#endif