Bug 124599 Shortcut delete and menu delete act different in table column.
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/internal/ui/editors/schematic/editparts/TableUtil.java
TableLayout.WorkingData data = (TableLayout.WorkingData) figure.getLayoutManager( )
				.getConstraint( figure );
		if ( data == null )
		{
			return 0;
		}
		if ( rowNumber <= data.rowHeights.length )
		{
			return data.findRowData( rowNumber ).minRowHeight;
		}
		return 0;
	}
	/**
	 * Get minimum width of column.
	 * 
	 * @param part
	 * @param columnNumber
	 * @return
	 */
	public static int getMinWidth( TableEditPart part, int columnNumber )
	{
		IFigure figure = part.getLayer( LayerConstants.PRIMARY_LAYER );
		TableLayout.WorkingData data = (TableLayout.WorkingData) figure.getLayoutManager( )
				.getConstraint( figure );
		if ( data == null )
		{
			return 0;
		}
		if ( columnNumber <= data.columnWidths.length )
		{