wrapInFormField<T> static method

Widget wrapInFormField<T>({ required FormFieldValidator<T>? validator, required Widget child, String? labelText, bool? filled, InputBorder? border, double childTopPadding = 5, EdgeInsetsGeometry? contentPadding, Widget? suffixIcon, })

Wraps a widget in a FormField with InputDecorator for validation display.

Parameters:

• validator: Form field validator function
• child: The widget to wrap
• labelText: Optional label text
• filled: Whether the field is filled
• border: Optional input border
• childTopPadding: Top padding for child. Defaults to 5
• contentPadding: Optional content padding
• suffixIcon: Optional suffix icon widget

Useful for adding validation to custom widgets that aren't form fields.

Implementation

static Widget wrapInFormField<T>({required FormFieldValidator<T>? validator,
  required Widget child, String? labelText, bool? filled, InputBorder? border, double childTopPadding = 5,
  EdgeInsetsGeometry? contentPadding,
Widget? suffixIcon})
{
  return FormField(
      validator: validator,
      builder: (field) {
        return InputDecorator(
            decoration: InputDecoration(
              //isDense: true,
              contentPadding: contentPadding ?? EdgeInsets.zero,
              border: border,
              //fillColor: Colors.transparent,
              errorText: field.errorText,
              //errorBorder: InputBorder.none,
              labelText: labelText,
                //border: InputBorder.none,
              filled: filled,
              suffixIcon: suffixIcon
            ),
          child: child.paddingTop(childTopPadding),
        );
      },
  );
}