when<TResult extends Object?> method

@optionalTypeArgs TResult when<TResult extends Object?>(TResult $default(String contentText, String okText, String cancelText, Widget? content, Widget? title,))

A switch-like method, using callbacks.

As opposed to map, this offers destructuring. It is equivalent to doing:

switch (sealedClass) {
  case Subclass(:final field):
    return ...;
  case Subclass2(:final field2):
    return ...;
}

Implementation

@optionalTypeArgs
TResult when<TResult extends Object?>(
  TResult Function(String contentText, String okText, String cancelText,
          @igFreezedJson Widget? content, @igFreezedJson Widget? title)
      $default,
) {
  final _that = this;
  switch (_that) {
    case _AskOkDialogParams():
      return $default(_that.contentText, _that.okText, _that.cancelText,
          _that.content, _that.title);
  }
}