onToggleColumn method

void onToggleColumn(
  1. String value
)

Implementation

void onToggleColumn(String value) {
  final oldValue = _selectColumns[value];
  if (oldValue != null) {
    _selectColumns[value] = !oldValue;
    if (!_selectColumns.values.contains(false)) {
      selectAllColumns();
    }
    createQuery();
  }
}