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
int pageCount = pageSetup.getMasterPageCount( );
		if ( pageCount > 0 )
		{
			MasterPageDesign pageDesign =  pageSetup.getMasterPage( 0 );
			context.setMasterPage( pageDesign.getName( ) );
			return pageDesign;
		}
		return null;
	}
	protected boolean handleVisibility( )
	{
		if ( isHidden( ) )
		{
			traverse( executor );
			return true;
		}
		else
		{
			return false;
		}
	}
	private void traverse( IReportItemExecutor executor )
	{
		if ( executor != null )
		{
			while ( executor.hasNextChild( ) )
			{
				IReportItemExecutor child = (IReportItemExecutor) executor
						.getNextChild( );
				if ( child != null )