build method

Implementation

@override
Widget build({required BuildContext context, required FormMapper mapper, required TypeProperty property, required Keywords args}) {
  TextEditingController? controller;
  FocusNode? focusNode;

  WidgetProperty? widgetProperty = mapper.findWidget(property.path);

  var (displayValue, parseValue, validate, textInputType, inputFormatters) = customize(property);

  bool blurred = false;
  SmartFormState? form;

  //final key = GlobalKey<FormFieldState>();

  void Function() getFocusListener(FocusNode focusNode) {
    return () {
      if ( !focusNode.hasFocus && property.isDirty()) {
        blurred = true;
        form!.triggerValidation();
        //key.currentState?.validate();
      }
    };
  }

  if ( widgetProperty != null) {
    controller = widgetProperty.arg("controller");
    focusNode = widgetProperty.arg("focusNode");
  }
  else {
    controller = TextEditingController();
    focusNode = FocusNode();

    focusNode.addListener(getFocusListener(focusNode));

    controller.addListener(() {
      try {
        var value = parseValue(controller!.text);
        mapper.notifyChange(property: property, value: value);

        if (form != null) {
          form!.triggerValidation();
          //key.currentState?.validate();
        }
      }
      catch(e) {
        // noop? the validation should take care
      }
    });
  } // else

  String? Function(String? value) getValidator() {
    return (String? value) {
      final hasSubmitted = form?.submitted ?? false;
      final error = validate(value);

      // show only if for is submitted or the user has touched the field

      final showError = hasSubmitted || (property.isDirty() && blurred);

      return showError ? error : null;
    };
  }

  CupertinoTextFormFieldRow result = CupertinoTextFormFieldRow(
        key: ValueKey(property.path), // key
        controller: controller,
        focusNode: focusNode,
        prefix: args.get<String>('prefix') != null ? Text(args.get<String>('prefix')!) : null,
        placeholder:  args.get<String>('placeholder'),
        style: args.get<TextStyle>('style'),
        padding: args.get<EdgeInsetsGeometry>('padding'),
        validator: getValidator(),
        keyboardType: textInputType,
        inputFormatters: inputFormatters
    );

  //key.currentState?.validate();

  // new binding

  mapper.map(property: property, widget: result, adapter: this, displayValue: displayValue, parseValue: parseValue);

  if ( widgetProperty == null) {
    widgetProperty = mapper.findWidget(property.path)!;

    widgetProperty.setArg("controller", controller);
    widgetProperty.setArg("focusNode", focusNode);
  }

  return Builder(
      builder: (ctx) {
        form = SmartForm.of(ctx);

        return result;
      });
}