updateValueAndValidity

Source

void updateValueAndValidity({bool onlySelf, bool emitEvent}) {
  onlySelf = onlySelf == true;
  emitEvent = emitEvent ?? true;
  this._updateValue();
  this._errors = this._runValidator();
  this._status = this._calculateStatus();
  if (this._status == VALID || this._status == PENDING) {
    this._runAsyncValidator(emitEvent);
  }
  if (emitEvent) {
    this._valueChanges.add(this._value);
    this._statusChanges.add(this._status);
  }
  if (_parent != null && !onlySelf) {
    this
        ._parent
        .updateValueAndValidity(onlySelf: onlySelf, emitEvent: emitEvent);
  }
}