final CellAddress cellAddress = (CellAddress) cellSource;
final CellInfo cellInfo = new CellInfoImpl( cellAddress, _cell.getName() );
final SectionModel sectionModel = _cell.getSection();
final Object sectionSource = sectionModel.getSource();
final RangeAddress range = sectionSource instanceof RangeAddress ? (RangeAddress) sectionSource : null;
final SectionInfo sectionInfo = new SectionInfoImpl( sectionModel.getName(), range, -1 );
final boolean input = _cell.isInput();
final boolean output = _cell.isOutput();
final SpreadsheetCellComputationEvent event = new SpreadsheetCellComputationEvent( cellInfo, sectionInfo,
_value, input, output );
this.listener.constantCellCalculated( event );