lastColumn method

Future<Map<String, Cell>?> lastColumn({ int fromRow = 1, int mapTo = 1, int length = -1, bool inRange = false, })

Fetches last column, maps it to other column and returns map.

Expands current sheet's size if requested range is out of sheet's bounds.

fromRow - optional (defaults to 1), index of a row that requested column starts from (cells before fromRow will be skipped), rows start at index 1

length - optional (defaults to -1), the length of a requested column if length is -1, all cells starting from fromRow will be returned

mapTo - optional (defaults to 1), index of a column to map cells to (keys of returned map), columns start at index 1 (column A)

inRange - optional (defaults to false), whether should be fetched last column in range (respects fromRow and length) or last column in table

Returns column as Future Map of String to Cell. Returns Future null if there are less than 2 columns.

Throws GSheetsException.

Implementation

Future<Map<String, Cell>?> lastColumn({
  int fromRow = 1,
  int mapTo = 1,
  int length = -1,
  bool inRange = false,
}) async {
  checkIndex('mapTo', mapTo);
  if (inRange) {
    final columns = await _cells._ws.values.allColumns(
      fromRow: fromRow,
      length: length,
    );
    final column = columns.length;
    if (column < 2) return null;
    checkMapTo(column, mapTo);
    final keys = get(columns, at: mapTo - 1, or: <String>[])!;
    final values = columns[column - 1];
    return _wrapColumn(keys, values, column, fromRow);
  } else {
    checkIndex('fromRow', fromRow);
    final columns = await _cells._ws.values.allColumns();
    final column = columns.length;
    if (column < 2) return null;
    checkMapTo(column, mapTo);
    final keys = extractSublist(
      get(columns, at: mapTo - 1, or: <String>[])!,
      from: fromRow - 1,
      length: length,
    );
    final values = extractSublist(
      columns[column - 1],
      from: fromRow - 1,
      length: length,
    );
    return _wrapColumn(keys, values, column, fromRow);
  }
}