/*

* Copyright (c) 2008-2009 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:    List utilities

*

*/

#ifndef __GLXLISTUTILS_H__

#define __GLXLISTUTILS_H__

#include <e32std.h>

// constants

const TUint KGlxDefaultVisibleItemsGranularity = 15;

const TUint KGlxQHDVisibleItemsGranularity = 20;

const TUint KGlxVGAVisibleItemsGranularity = 21;

/**

 *  GlxListUtils

 *

 *  @author Aki Vanhatalo

 *

 * @internal reviewed 16/07/2007 by Kimmo Hoikka

 */

class GlxListUtils

	{

public:

	/** 

	 * Normalises index in a loop into the range. If aIndex is outside the 

	 * list indexes (i.e., 0 and list size), this function "loops the list"

	 * to return the correct index normalised to inside the list.

	 * This function must not be called if the list is empty.

     * @param aIndex Index to normalise

     * @param aListLength Length of the list

	 */

	static TInt NormalizedIndex( TInt aIndex, TInt aListLength );

    /**

     * Returns Visible items granularity based on feature 

     * layout (i.e., qHD, VGA)  

     * @return TInt visible items granularity / count

     */

	static TInt VisibleItemsGranularityL();

	};

#endif // __GLXLISTUTILS_H__