super_form_field 1.5.1

GeniusLink design-system form fields for Flutter with unified InputDecoration APIs, badge validation, responsive interactions, light/dark themes, and LTR/RTL support.

super_form_field

A Flutter form-field toolkit for ERP and business applications, built on the GeniusLink design system. It provides consistent decoration, validation, responsive interaction, controller support, light and dark themes, and English and Arabic layouts.

The package includes:

• SuperTextFormField
• SuperNumericFormField
• SuperAttachmentFormField
• SuperDateFormField
• SuperSelectFormField<T>
• SuperMultiSelectFormField<T>
• SuperBoolFormField
• SuperChoiceFormField<T>

Features

• One InputDecoration contract across all fields.
• Typed values and dedicated controllers for every field.
• Built-in required, range, length, format, and selection validation.
• Custom validators with first-error-wins behavior.
• Validation errors displayed through compact error badges and tooltips.
• Responsive date input for mobile, tablet, and desktop.
• Searchable single-select and multi-select menus.
• Picker-agnostic file attachments.
• Light and dark theme support through super_core.
• English and Arabic package localizations.
• LTR and RTL layout support.

Requirements

Dependency	Minimum version
Dart	3.8.0
Flutter	3.32.0
super_core	3.0.0

Installation

Add the package with Flutter:

flutter pub add super_form_field

Or add it manually to pubspec.yaml:

dependencies:
  super_form_field: ^1.5.1

Import the public library:

import 'package:super_form_field/super_form_field.dart';

Application code should normally import only this barrel file. It exports the form fields, their controllers, shared value types, localization helpers, and the required super_core design-system APIs.

App setup

Use SuperMaterialThemeData and register the package localization delegates at the application root:

import 'package:flutter/material.dart';
import 'package:super_form_field/super_form_field.dart';

void main() {
  runApp(const App());
}

class App extends StatelessWidget {
  const App({super.key});

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      debugShowCheckedModeBanner: false,
      theme: SuperMaterialThemeData.light(),
      darkTheme: SuperMaterialThemeData.dark(),
      themeMode: ThemeMode.system,
      localizationsDelegates:
          SuperFormLocalizations.localizationsDelegates,
      supportedLocales: SuperFormLocalizations.supportedLocales,
      home: const AccountFormPage(),
    );
  }
}

All controls read their colors, typography, spacing, sizing, and interaction tokens from the active SuperThemeData supplied by super_core.

Quick start

class AccountFormPage extends StatefulWidget {
  const AccountFormPage({super.key});

  @override
  State<AccountFormPage> createState() => _AccountFormPageState();
}

class _AccountFormPageState extends State<AccountFormPage> {
  final _nameController = SuperTextFieldController();
  final _typeController = SuperSelectFieldController<String>();

  bool _forceErrors = false;
  String? _nameError;
  String? _typeError;

  bool get _isValid => _nameError == null && _typeError == null;

  void _submit() {
    setState(() => _forceErrors = true);

    if (!_isValid) return;

    final name = _nameController.value;
    final type = _typeController.value;

    // Send name and type to the application layer.
  }

  @override
  void dispose() {
    _nameController.dispose();
    _typeController.dispose();
    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(title: const Text('Create account')),
      body: ListView(
        padding: const EdgeInsets.all(24),
        children: [
          SuperTextFormField(
            controller: _nameController,
            decoration: const InputDecoration(
              labelText: 'Account name',
              hintText: 'Enter the account name',
            ),
            required: true,
            minLength: 3,
            forceError: _forceErrors,
            onValidity: (error) => _nameError = error,
          ),
          const SizedBox(height: 20),
          SuperSelectFormField<String>(
            controller: _typeController,
            decoration: const InputDecoration(
              labelText: 'Account type',
              hintText: 'Select a type',
            ),
            required: true,
            searchable: true,
            options: const [
              SuperOption(value: 'asset', label: 'Asset'),
              SuperOption(value: 'liability', label: 'Liability'),
              SuperOption(value: 'equity', label: 'Equity'),
            ],
            forceError: _forceErrors,
            onValidity: (error) => _typeError = error,
          ),
          const SizedBox(height: 24),
          FilledButton(
            onPressed: _submit,
            child: const Text('Create account'),
          ),
        ],
      ),
    );
  }
}

Input decoration

Every public field accepts decoration. Use it as the single source for labels, hints, helper text, icons, prefixes, suffixes, counters, and external errors.

SuperTextFormField(
  decoration: const InputDecoration(
    labelText: 'Reference',
    hintText: 'Enter a reference',
    helperText: 'Visible in reports',
    prefixIcon: Icon(SffIcons.hash),
    suffixText: 'ERP',
  ),
);

InputDecoration property	Package behavior
label / labelText	External field label
hint / hintText	Empty-value prompt or field statement
helper / helperText	Supporting content below the control
icon, prefixIcon, prefix, prefixText	Leading adornments
suffix, suffixText, suffixIcon	Trailing adornments
counter / counterText	Counter content where supported
errorText	External error displayed through the package error badge

The package keeps ownership of field geometry, borders, fill, focus states, disabled states, and error presentation so all field types remain visually consistent. Use errorText for an external string error. The widget form of InputDecoration.error is not adapted because the package error surface requires a message for its tooltip.

Fields

Text field

SuperTextFormField supports regular text, email, password, and multiline input.

SuperTextFormField(
  decoration: const InputDecoration(
    labelText: 'Email address',
    hintText: '[e-mail]',
    prefixIcon: Icon(SffIcons.mail),
  ),
  type: SuperTextType.email,
  required: true,
  clearable: true,
  maxLength: 120,
);

Common options:

• type: text, email, or password.
• multiline and rows for long-form input.
• minLength, maxLength, pattern, and patternMessage.
• showCounter, clearable, and autofocus.
• disabled, readOnly, arabic, and forceError.

Numeric field

SuperNumericFormField supports grouped display values, decimal precision, range validation, negative-value control, keyboard shortcuts, and an optional stepper.

SuperNumericFormField(
  decoration: const InputDecoration(
    labelText: 'Amount',
    hintText: '0.00',
    prefixText: 'SAR',
  ),
  required: true,
  decimals: 2,
  min: 0,
  max: 1000000,
  step: 0.25,
  largeStep: 100,
);

While focused, Arrow Up and Arrow Down change the value by step. Page Up and Page Down use largeStep, or step * 10 when largeStep is not supplied. Set keyboardShortcuts: false or stepper: false when those interactions are not needed.

Attachment field

SuperAttachmentFormField renders an attachment drop zone and a validated list of SuperFile values. File acquisition remains the responsibility of the host application, so the package does not depend on a picker plugin.

SuperAttachmentFormField(
  decoration: const InputDecoration(
    labelText: 'Supporting documents',
    hintText: 'Browse or drop files here',
    helperText: 'PDF and DOCX files only',
    prefixIcon: Icon(SffIcons.uploadCloud),
  ),
  required: true,
  accept: '.pdf,.docx',
  maxSizeMB: 10,
  maxFiles: 5,
  onBrowse: () async {
    // Use file_picker, image_picker, or an application service here.
    return <SuperFile>[];
  },
);

A SuperFile carries platform-neutral metadata:

final file = SuperFile(
  id: 'invoice-42',
  name: 'invoice.pdf',
  size: 245760,
  mimeType: 'application/pdf',
  path: '/local/path/invoice.pdf',
);

For desktop drag-and-drop adapters, pass an external SuperAttachmentFieldController and call setDragOver, add, remove, or clear from the host integration.

Date field

SuperDateFormField provides segmented date editing, configurable formats, range validation, keyboard navigation, and a responsive calendar picker.

SuperDateFormField(
  decoration: const InputDecoration(
    labelText: 'Posting date',
    helperText: 'Must be inside the open fiscal period',
  ),
  required: true,
  format: SuperDateFormat.yearMonthDay,
  minDate: DateTime(2026, 1, 1),
  maxDate: DateTime(2026, 12, 31),
  clearable: true,
);

Available formats:

Value	Display
SuperDateFormat.yearMonthDay	YYYY-MM-DD
SuperDateFormat.yearMonth	YYYY-MM
SuperDateFormat.year	YYYY
SuperDateFormat.monthDay	MM-DD
SuperDateFormat.month	MM
SuperDateFormat.day	DD

On mobile, the calendar opens in a modal bottom sheet and segmented editing is adapted for software keyboards. Tablet and desktop use an anchored popover with hardware-key navigation. Set calendar: false or keyboardShortcuts: false to disable those behaviors.

The leading calendar icon is used when no leading decoration is supplied. Use prefixIcon to replace it, or prefixIcon: SizedBox.shrink() to suppress it.

Select field

SuperSelectFormField<T> is a typed single-select control with optional search, clear behavior, disabled options, descriptions, icons, and option groups.

SuperSelectFormField<int>(
  decoration: const InputDecoration(
    labelText: 'Parent account',
    hintText: 'Select an account',
  ),
  searchable: true,
  clearable: true,
  options: const [
    SuperOption(
      value: 1000,
      label: 'Cash',
      description: 'Current assets',
      icon: SffIcons.hash,
      group: 'Assets',
    ),
    SuperOption(
      value: 2000,
      label: 'Accounts payable',
      group: 'Liabilities',
    ),
  ],
  onChanged: (accountId) {},
);

Search matches both label and description, without case sensitivity.

Multi-select field

SuperMultiSelectFormField<T> displays selected values as removable chips and keeps the options menu open while values are toggled.

SuperMultiSelectFormField<String>(
  decoration: const InputDecoration(
    labelText: 'Permissions',
    hintText: 'Select permissions',
  ),
  searchable: true,
  required: true,
  minSelections: 1,
  maxSelections: 4,
  showCount: true,
  options: const [
    SuperOption(value: 'read', label: 'Read'),
    SuperOption(value: 'create', label: 'Create'),
    SuperOption(value: 'update', label: 'Update'),
    SuperOption(value: 'delete', label: 'Delete'),
  ],
  onChanged: (permissions) {},
);

maxSelections is enforced as a hard selection cap. The field value is always List<T>.

Boolean field

SuperBoolFormField renders either a toggle or a checkbox. Use mustBeTrue for acknowledgement and compliance gates.

SuperBoolFormField(
  decoration: const InputDecoration(
    labelText: 'Confirmation',
    hintText: 'I confirm that this entry was reviewed',
  ),
  style: SuperBoolStyle.checkbox,
  mustBeTrue: true,
  mustBeTrueMessage: 'Confirmation is required',
);

When decoration.hint and decoration.hintText are absent, the control shows enabledLabel or disabledLabel according to its current value.

Choice field

SuperChoiceFormField<T> renders a small fixed option set inline as a segmented control, radio list, or checkbox list.

SuperChoiceFormField<String>(
  decoration: const InputDecoration(
    labelText: 'Entry status',
    helperText: 'Choose the initial workflow state',
  ),
  style: SuperChoiceStyle.segmented,
  options: const [
    SuperOption(value: 'draft', label: 'Draft'),
    SuperOption(value: 'posted', label: 'Posted'),
  ],
  onChanged: (values) {},
);

Use:

• SuperChoiceStyle.segmented for two to four short options.
• SuperChoiceStyle.radio for a single selection from a longer inline list.
• SuperChoiceStyle.checkbox with multiple: true for multiple selections.

The value is always List<T>. For single-select use, read the first value or use SuperChoiceFieldController<T>.single.

Options

SuperOption<T> separates the displayed label from the domain value:

const option = SuperOption<String>(
  value: 'asset',
  label: 'Asset',
  description: 'Resources controlled by the business',
  icon: SffIcons.hash,
  group: 'Balance sheet',
);

Use disabled: true to keep an option visible but unavailable. For simple value-to-label mappings, use SuperOption.fromMap:

final options = SuperOption.fromMap<int>({
  1: 'Cash',
  2: 'Bank',
  3: 'Inventory',
});

Validation

A validator returns an error message or null:

String? positiveAmount(num? value) {
  if (value == null || value <= 0) {
    return 'Enter an amount greater than zero';
  }
  return null;
}

Pass custom validators through validators:

SuperNumericFormField(
  decoration: const InputDecoration(labelText: 'Amount'),
  required: true,
  validators: [positiveAmount],
  onValidity: (error) {
    // error is null when the field is valid.
  },
);

Built-in validators run before custom validators, and the first error wins. Errors remain visually quiet until the field is touched, unless forceError is true. onValidity reports the current raw error whenever it changes.

The validation API is intentionally controller- and callback-based. These widgets do not rely on FormState.validate(). Aggregate field errors in the screen controller, state object, Bloc, Cubit, or other presentation-state layer used by the application.

Controllers

Each widget can create and dispose its own controller, or receive an external controller when imperative access is required.

Field	Controller	Value
SuperTextFormField	SuperTextFieldController	String
SuperNumericFormField	SuperNumericFieldController	num?
SuperAttachmentFormField	SuperAttachmentFieldController	List<SuperFile>
SuperDateFormField	SuperDateFieldController	DateTime?
SuperSelectFormField<T>	SuperSelectFieldController<T>	T?
SuperMultiSelectFormField<T>	SuperMultiSelectFieldController<T>	List<T>
SuperBoolFormField	SuperBoolFieldController	bool
SuperChoiceFormField<T>	SuperChoiceFieldController<T>	List<T>

Example:

class ControlledAmountField extends StatefulWidget {
  const ControlledAmountField({super.key});

  @override
  State<ControlledAmountField> createState() =>
      _ControlledAmountFieldState();
}

class _ControlledAmountFieldState extends State<ControlledAmountField> {
  final _controller = SuperNumericFieldController(initialValue: 100);

  @override
  void dispose() {
    _controller.dispose();
    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    return Column(
      children: [
        SuperNumericFormField(
          controller: _controller,
          decoration: const InputDecoration(labelText: 'Amount'),
          decimals: 2,
        ),
        TextButton(
          onPressed: () => _controller.setValue(0),
          child: const Text('Reset amount'),
        ),
      ],
    );
  }
}

External controllers must be disposed by the owner that created them.

Common imperative operations include:

Controller	Common operations
SuperTextFieldController	setValue, clear, markTouched, toggleObscure
SuperNumericFieldController	setValue, bump, bumpLarge
SuperAttachmentFieldController	add, remove, clear, setDragOver
SuperDateFieldController	setValue, pick, clear, markTouched
SuperSelectFieldController<T>	select, setValue, clear, markTouched
SuperMultiSelectFieldController<T>	toggle, removeValue, setValues, clear
SuperBoolFieldController	set, setValue, toggle, markTouched
SuperChoiceFieldController<T>	pick, setValues, setSingle, clear

Localization and RTL

The package includes English and Arabic strings for built-in validation messages, search and empty states, attachment actions, numeric controls, boolean captions, and calendar content.

Register the delegates once:

MaterialApp(
  locale: const Locale('ar'),
  localizationsDelegates:
      SuperFormLocalizations.localizationsDelegates,
  supportedLocales: SuperFormLocalizations.supportedLocales,
  theme: SuperMaterialThemeData.light(),
  darkTheme: SuperMaterialThemeData.dark(),
  home: const ArabicFormPage(),
);

Use normal Flutter directionality and set arabic: true when the field should use the package's Arabic typography behavior:

Directionality(
  textDirection: TextDirection.rtl,
  child: SuperTextFormField(
    arabic: true,
    decoration: const InputDecoration(
      labelText: 'اسم الحساب',
      hintText: 'أدخل اسم الحساب',
    ),
  ),
);

Application-owned labels, option text, helper text, and custom validation messages are not translated automatically. Numeric and segmented date editing retain Western digits and LTR editing behavior inside RTL layouts.

Responsive behavior

Most visual sizing comes from the active SuperThemeData and its SuperDeviceMode. The date field also changes its interaction model:

Device mode	Date interaction
Mobile	Software-keyboard-safe segmented editing and modal bottom-sheet calendar
Tablet	Hardware-key segmented editing and anchored calendar popover
Desktop	Hardware-key navigation, stepping shortcuts, and anchored calendar popover

Use FieldDensity on supported fields when the screen requires a denser or more comfortable control layout.

Advanced public API

The main barrel also exports lower-level building blocks for custom controls. Prefer the eight form-field widgets for normal application screens.

Shared values and helpers

API	Purpose
SuperOption<T>	Typed option descriptor for select and choice fields
SuperFile	Platform-neutral attachment descriptor
Validator<T>	Custom validation callback type
ValidityChanged	Validation-state callback type
FieldDensity	Shared compact or comfortable field-density setting
SuperFormLocalizations	Supported locales and localization delegates
SuperFormTranslation	Generated package translation lookup
SffIcons	Package icon vocabulary
SuperFieldContextX	context.sffTheme and context.sffColorScheme

Field foundation

API	Purpose
FieldShell	External label, helper, counter, and field layout
FieldBox	Bordered shell for composed custom controls
FieldIconButton	Design-system icon action used inside fields
FieldPopover	Anchored responsive popover surface
OptionMenu	Menu container for option-driven controls
OptionTile	Selectable option row
OptionGroupHeader	Group label inside an option menu
MenuSearchField	Search input for option menus
SuperChip	Removable selected-value chip
CountPill	Compact count indicator
ErrorBadge	Tooltip-based validation error indicator

Pure logic and date interaction

The package exports pure logic helpers such as DateLogic, NumericLogic, SelectLogic, MultiSelectLogic, ChoiceLogic, and AttachmentLogic for unit testing or advanced integrations. It also exports DateInputIntent, DesktopDateInputUseCase, MobileDateInputUseCase, and MiniCalendar for custom date-input adapters.

Example application

Run the included gallery from the package root:

cd example
flutter pub get
flutter run

The gallery demonstrates all eight fields, controller-driven values, validation flows, date formats, linked ranges, light and dark themes, and LTR and RTL layouts.

Additional information

• Repository
• Issue tracker
• Changelog
• License

This package is licensed under the MIT License.