buildFooterRows method

@override List<DataRowY> buildFooterRows()

Implementation

@override
List<DataRowY> buildFooterRows() {
  List<DataRowY> footerRows = [];
  List<List<DataCellY>> lsList = _dataColumnCells.mapList((e) => e.buildFooterCell());
  int? rowCount = lsList.map((e) => e.length).maxValue();
  if (rowCount == null || rowCount == 0) return [];
  for (int row = 0; row < rowCount; ++row) {
    List<DataCellY> cells = [];
    for (int c = 0; c < _dataColumnCells.length; c++) {
      DataCellY? cell = lsList[c].getOr(row);
      if (cell != null) {
        cells.add(cell);
      } else {
        cells.add(DataCellY.empty);
      }
    }
    DataRowY tr = DataRowY(cells: cells);
    footerRows.add(tr);
  }
  return footerRows;
}