Bug 193467 URL hyperlink can't work in chart viewer
chart/org.eclipse.birt.chart.reportitem/src/org/eclipse/birt/chart/reportitem/ChartReportItemPresentationImpl.java
if ( renderContext instanceof HTMLRenderContext )
			{
				IRenderOption renderOption = ( (HTMLRenderContext) renderContext ).getRenderOption( );
				if ( renderOption instanceof HTMLRenderOption )
				{
					if ( ( (HTMLRenderOption) renderOption ).getHtmlRtLFlag( ) )
					{
						rtc.setRightToLeft( true );
					}
				}
			}
			gcs = gr.build( idr.getDisplayServer( ),
					cm,
					bo,
					externalContext,
					rtc,
					new ChartReportStyleProcessor( handle, this.style ) );
			
			logger.log( ILogger.INFORMATION,
					Messages.getString( "ChartReportItemPresentationImpl.log.onRowSetsRendering" ) ); 
			ByteArrayOutputStream baos = new ByteArrayOutputStream( );
			BufferedOutputStream bos = new BufferedOutputStream( baos );
			idr.setProperty( IDeviceRenderer.FILE_IDENTIFIER, bos );
			idr.setProperty( IDeviceRenderer.UPDATE_NOTIFIER,
					new EmptyUpdateNotifier( cm, gcs.getChartModel( ) ) );
			gr.render( idr, gcs );
			
			rowAdapter.close( );
			
			try