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/*******************************************************************************
 * Copyright (c) 2004 Actuate Corporation.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *  Actuate Corporation  - initial API and implementation
 *******************************************************************************/

package org.eclipse.birt.report.engine.ir;

import java.util.ArrayList;

/**
 * Container Object.
 * 
 * the content of container should be ReportItem also.
 * 
 */
public class FreeFormItemDesign extends ReportItemDesign
{

	/**
	 * items in this container.
	 */
	protected ArrayList items = new ArrayList( );

	/**
	 * get items in this container.
	 * 
	 * @return items in this container.
	 */
	public ArrayList getItems( )
	{
		return this.items;
	}

	/**
	 * add item into the container.
	 * 
	 * @param item
	 *            item to be added.
	 */
	public void addItem( ReportItemDesign item )
	{
		this.items.add( item );
	}

	/**
	 * get total items in the container.
	 * 
	 * @return item count
	 */
	public int getItemCount( )
	{
		return this.items.size( );
	}

	/**
	 * get item at index index.
	 * 
	 * @param index
	 *            item index. the index must >= 0 and < item.count.
	 * @return item
	 */
	public ReportItemDesign getItem( int index )
	{
		assert ( index >= 0 && index < this.items.size( ) );
		return (ReportItemDesign) this.items.get( index );
	}

	public Object accept( IReportItemVisitor visitor, Object value)
	{
		return visitor.visitFreeFormItem( this , value);
	}
}