Bug 212238 [Regression] Pagebreak on chart does not work when preview in PDF/PPT/PostScritp.
Description: Pagebreak on chart does not work when preview in PDF/PPT/PostScritp. build version: 2.3.0 v20071207-0800. steps to reproduce: 1. New a report. 2. Insert a label in layout. 3. Insert a chart in layout. 4. Add pagebreak: Before Always on chart. 5. Preview in PDF/PPT/Postscript. Expected result: The chart should be displayed on the second page. Actual result: The chart is displayed on the first page.
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/layout/pdf/PDFAbstractLM.java
{
					child.execute( );
					traverse( child );
					child.close( );
				}
			}
		}
	}
	
	public abstract void autoPageBreak();
	
	protected abstract void cancelChildren( );
	public void cancel( )
	{
		if ( executor != null && status != STATUS_END )
		{
			cancelChildren( );
			executor.close( );
		}
	}
	protected void execute( IReportItemExecutor executor, IContent content )
	{
		if ( executor != null )
		{
			while ( executor.hasNextChild( ) )
			{
				IReportItemExecutor childExecutor = executor.getNextChild( );
				if ( childExecutor != null )
				{
					IContent childContent = childExecutor.execute( );