validate method

Implementation

@override
void validate(String? newValue) {
  final String? _newValue = newValue;

  if (_newValue == null || _newValue.isEmpty) {
    if (isRequired) {
      throw RequiredValueException();
    } else {
      return;
    }
  }

  final int? maxLenghtLocal = maxLenght;
  final int? minLenghtLocal = minLenght;

  if (maxLenghtLocal == null && minLenghtLocal == null) {
    return;
  }

  final String? parsedString = valueText;

  if (parsedString == null) {
    throw RequiredValueException();
  }

  if (maxLenghtLocal != null) {
    if (parsedString.length > maxLenghtLocal) {
      throw TooLongValueException();
    }
  }

  if (minLenghtLocal != null) {
    if (parsedString.length < minLenghtLocal) {
      throw TooShortValueException();
    }
  }
}