validator method

  1. @override
EmailValidationError? validator(
  1. String value
)
override

A function that must return a validation error if the provided value is invalid and null otherwise.

Implementation

@override
EmailValidationError? validator(String value) {
  if (value.isEmpty) {
    return EmailValidationError.empty;
  } else {
    if (emailRegExp != null) {
      if (!emailRegExp!.hasMatch(value)) {
        return EmailValidationError.invalid;
      }
    } else if (!_defaultEmailRegExp.hasMatch(value)) {
      return EmailValidationError.invalid;
    }
  }
  return null;
}