apply<T extends DataGridRow> method

@override DataGridState<T>? apply<T extends DataGridRow>(EventContext<T> context)

Apply this event's transformation to the state. Returns the new state, or null if no state change should occur. Can return a Future for async operations.

Implementation

@override
DataGridState<T>? apply<T extends DataGridRow>(EventContext<T> context) {
  final row = context.state.rowsById[rowId];
  if (row == null) {
    return null;
  }

  final column = context.state.columns.firstWhere((c) => c.id == columnId);
  if (column.cellValueSetter == null) {
    return null;
  }

  column.cellValueSetter!(row, value);
  context.notifyCellValueChanged?.call(
    CellValueChange(
      rowId: rowId,
      columnId: columnId,
      value: value,
      source: CellValueChangeSource.programmatic,
    ),
  );

  return context.state;
}