validate method

bool validate()

Implementation

bool validate() {
  for (ARule<TValue> rule in rules) {
    String? error = rule.call(value);
    if (error != null) {
      Scrollable.ensureVisible(context);
      setState(() {
        __errorText = error;
      });
      return false;
    }
  }
  setState(() {
    __errorText = null;
  });
  return true;
}