Bug 193467 URL hyperlink can't work in chart viewer
chart/org.eclipse.birt.chart.reportitem/src/org/eclipse/birt/chart/reportitem/ChartReportItemPresentationImpl.java
{
				registeredDevices.add( formats[i][0] );
			}
		}
		catch ( ChartException e )
		{
			logger.log( e );
		}
	}
	/**
	 * check if the format is supported by the browser and device renderer.
	 */
	private boolean isOutputRendererSupported( String format )
	{
		if ( format != null )
		{
			if ( sSupportedFormats != null
					&& ( sSupportedFormats.indexOf( format ) != -1 ) )
			{
				return registeredDevices.contains( format );
			}
		}
		return false;
	}
	private String getFirstSupportedFormat( String formats )
	{
		if ( formats != null && formats.length( ) > 0 )
		{
			int idx = formats.indexOf( ';' );
			if ( idx == -1 )