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
}
		else if ( e.getSource( ).equals( btnFormatSpecifier ) )
		{
			if ( lstComponents.getSelectionCount( ) == 0 )
			{
				return;
			}
			int iSelected = lstComponents.getSelectionIndices( )[0];
			if ( iSelected != -1 )
			{
				setDataPointComponentFormatSpecifier( iSelected );
			}
		}
		else if ( e.getSource( ).equals( lstComponents ) )
		{
			refreshDataPointButtons( );
		}
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.swt.events.SelectionListener#widgetDefaultSelected(org.eclipse.swt.events.SelectionEvent)
	 */
	public void widgetDefaultSelected( SelectionEvent e )
	{
	}
	private void refreshDataPointButtons( )
	{
		btnFormatSpecifier.setEnabled( lstComponents.getSelectionIndex( ) != -1 );
		btnRemoveComponent.setEnabled( lstComponents.getSelectionIndex( ) != -1 );