select method

void select(dynamic o)

Change the option status to be selected. Which option to select can be defined by the index (String) or by the option (T) object itself.

Will clear and select o when mode is SelectionMode.single. When mode is SelectionMode.sameGroup, will clear and select o if the group for this o is not currently selected.

Implementation

void select(dynamic o) {
  assert(o is String || o is T);
  if (o is T) o = indexGetter(o);

  if (mode == SelectionMode.single) {
    _selected = {o};
  } else if (mode == SelectionMode.sameGroup) {
    if (isGroupSelected(_groups[o])) {
      _selected.add(o);
    } else {
      // switch group
      _selected = {o};
    }
  } else {
    _selected.add(o);
  }
}