Bug 161429 center position missing for gantt chart
When designing a gantt chart, it should be possible to display the labels inside the bar, using a new "center" attribute. See how it should like in UI and output in attached screenshot.
chart/org.eclipse.birt.chart.ui.extension/src/org/eclipse/birt/chart/ui/swt/wizard/format/popup/series/SeriesLabelSheet.java
IDataPointDefinition dpd = PluginSettings.instance( )
					.getDataPointDefinition( getSeriesForProcessing( ).getClass( ) );
			if ( dpd != null )
			{
				String[] dpType = dpd.getDataPointTypes( );
				String[] dpTypeDisplay = new String[dpType.length];
				for ( int i = 0; i < dpType.length; i++ )
				{
					dpTypeDisplay[i] = dpd.getDisplayText( dpType[i] );
					mapDataPointNames.put( dpType[i], dpTypeDisplay[i] );
					mapDataPointNames.put( dpTypeDisplay[i], dpType[i] );
				}
				componentsDisplayName = concatenateArrays( dpTypeDisplay,
						componentsDisplayName );
			}
		}
		catch ( ChartException e )
		{
			WizardBase.displayException( e );
		}
		cmbComponentTypes.setItems( componentsDisplayName );
		cmbComponentTypes.select( 0 );
		
		this.lstComponents.setItems( getDataPointComponents( series.getDataPoint( ) ) );
		String str = series.getDataPoint( ).getPrefix( );
		this.txtPrefix.setText( ( str == null ) ? "" : str ); 
		str = series.getDataPoint( ).getSuffix( );
		this.txtSuffix.setText( ( str == null ) ? "" : str ); 
		str = series.getDataPoint( ).getSeparator( );
		this.txtSeparator.setText( ( str == null ) ? "" : str );