/*

* Copyright (c) 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:  FreestyleEmailUi  list model and model item 

*				 abstract base classes definitions

*

*/

#ifndef __FREESTYLEEMAILUI_LISTMODEL_H__

#define __FREESTYLEEMAILUI_LISTMODEL_H__

#include <e32base.h>

//<cmail>

#include "cfsmailmessage.h"

//</cmail>

// LIST ITEM MODEL DEFINITION

class MFSListModelItem

    {

public:

    /** Virtual destructor. */

    virtual ~MFSListModelItem() {}

    };

/**

 * An interface for a list model. This mixin class provides storage methods for 

 * accessing, adding and removing list data.

 * 

 * Logic code and visualisation is done elsewhere.

 */

class MFSEmailListModel

    {

public:

	/**

	* Add an item to the end of the list.

	*/

	virtual void AppendL(MFSListModelItem* aItem) = 0;

	/**

	* Insert an item at the given index.

	*/	

	virtual void InsertL(MFSListModelItem* aItem, TInt aIndex) = 0;

	/**

	* Remove item by its index.

	*/	

	virtual void RemoveAndDestroy(TInt aIndex) = 0;

	/**

	* get an item by its index.

	* 

	* @return NULL if out of range.

	*/

	virtual MFSListModelItem* Item(TInt aIndex) = 0;

	/**

	* Get number of items in list.

	* 

	* @return Number of items.

	*/		

	virtual TInt Count() const = 0;

    };

#endif //__FREESTYLEEMAILUI_LISTMODEL_H__