/***********************************************************************
 * 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.layout.pdf;

import org.eclipse.birt.core.exception.BirtException;
import org.eclipse.birt.report.engine.content.IContent;
import org.eclipse.birt.report.engine.content.IGroupContent;
import org.eclipse.birt.report.engine.extension.IReportItemExecutor;
import org.eclipse.birt.report.engine.layout.IBlockStackingLayoutManager;

public abstract class PDFGroupLM extends PDFBlockStackingLM
		implements
			IBlockStackingLayoutManager
{

	protected IGroupContent groupContent;

	protected int repeatCount = 0;
	

	public PDFGroupLM( PDFLayoutEngineContext context, PDFStackingLM parent,
			IContent content, IReportItemExecutor executor )
	{
		super( context, parent, content, executor );
		groupContent = (IGroupContent) content;
	}

	public void setRepeatCount(int repeatCount)
	{
		this.repeatCount = repeatCount;
	}
	
	
	protected boolean traverseChildren( ) throws BirtException
	{
		repeatHeader();
		boolean hasNextPage = super.traverseChildren( );
		return hasNextPage;
	}

	protected boolean isRepeatHeader( )
	{
		return ( (IGroupContent) content ).isHeaderRepeat( );
	}

	protected abstract void repeatHeader( ) throws BirtException;

	protected boolean isRootEmpty( )
	{
		return !(( root != null && root.getChildrenCount( ) > repeatCount ) || isLast);
	}
	

}
