/*

* Copyright (c) 2008 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 <s32strm.h>

#include <nsmlsnapshotitem.h>

// CLASS DECLARATION

class CContactGroup;

// Defines the maximum length of a hash.

const TInt KMaxHashLength = 20;

typedef TBuf8<KMaxHashLength> THashValue;

/**

* @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 hash (name and url) information.

*/

class TSnapshotItem : public TNSmlSnapshotItem

	{ 

public:

	/**

    * Constructor

    */

	TSnapshotItem();

	/**

    * Constructor

    * 

    * @param aItemId   IN: id of the item.

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

    */

	TSnapshotItem( const TSmlDbItemUid& aItemId,

	    const TSmlDbItemUid& aParent = 0 );

	/**

    * 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 );	

	/**

    * Creates hash from name and url

    *

    * @param aName, name to used

    * @param aUrl, url to used

    * @return none.

    */

	void CreateHashL( const TDesC& aName, const TDesC& aUrl );

	void CreateHashL( CContactGroup& aGroup );

	/**

    * Reads hash

    * 

    * @return TDesC8& hash.

    */

	const TDesC8& Hash() const;

private:

    THashValue       iHash;

    };

#endif