TextFieldState constructor

Implementation

TextFieldState({
  String? text,
  this.onChanged,
  this.onFocus,
  this.onSubmitted,
  RxStatus? status,
  FocusNode? focus,
  bool approvable = false,
  bool editable = true,
  bool submitted = true,
  String? error,
}) : focus = focus ?? FocusNode() {
  controller = TextEditingController(text: text);
  isEmpty = RxBool(text?.isEmpty ?? true);

  this.editable = RxBool(editable);
  this.status = Rx(status ?? RxStatus.empty());
  this.approvable = approvable;
  this.error.value = error;

  if (submitted) {
    _previousSubmit = text;
  }

  _previousText = text;

  changed.value = _previousSubmit != text;

  String prev = controller.text;

  controller.addListener(() {
    PlatformUtils.keepActive();

    changed.value = controller.text != (_previousSubmit ?? '');

    if (controller.text != prev) {
      onChanged?.call(this);

      prev = controller.text;
      this.error.value = null;
      resubmitOnError.value = false;
    }
  });

  this.focus.addListener(() async {
    isFocused.value = this.focus.hasFocus;

    if (onFocus != null) {
      if (controller.text != _previousText &&
          (_previousText != null || controller.text.isNotEmpty)) {
        isEmpty.value = controller.text.isEmpty;
        if (!this.focus.hasFocus) {
          await onFocus?.call(this);
          _previousText = controller.text;
        }
      }
    }
  });
}