Merge branch 'fix/add_ci_linter'

.github/workflows/component-ci.yml

@@ -0,0 +1,14 @@
+name: Iconica Standard Component CI Workflow
+# Workflow Caller version: 2.0.0
+
+on:
+  pull_request:
+  workflow_dispatch:
+
+jobs:
+  call-global-iconica-workflow:
+    uses: Iconica-Development/.github/.github/workflows/component-ci.yml@master
+    secrets: inherit
+    permissions: write-all
+    with:
+      subfolder: "." # add optional subfolder to run workflow in

.github/workflows/flutter.yml

@@ -1,32 +0,0 @@
-name: CI
-
-on:
-  push:
-    branches: [master]
-  pull_request:
-    branches:
-      - master
-      - feature/*
-      - bugfix/*
-      - hotfix/*
-
-jobs:
-  lint:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v3
-      - uses: actions/cache@v3
-        with:
-          path: |
-            ~/.gradle/wrapper
-            /opt/hostedtoolcache/flutter
-          key: ${{ runner.OS }}-flutter-install-cache
-      - uses: subosito/flutter-action@v2
-        with:
-          channel: "stable"
-      - name: Flutter pub get
-        run: flutter pub get
-      - name: Dart format
-        run: dart format -o none --set-exit-if-changed .
-      - name: Flutter analyze
-        run: flutter analyze

CHANGELOG.md

@@ -114,4 +114,8 @@
 - Pass on the `initialValue` property to FlutterFormMultiLine
 
 ## 6.2.2 - February 6th 2024
-- Updated the `flutter_input_library` from 2.6.0 to 3.0.0
+- Updated the `flutter_input_library` from 2.6.0 to 3.0.0
+
+## 6.2.3 - February 7th 2024
+
+- Added CI and linter

analysis_options.yaml

@@ -1,4 +1,9 @@
-include: package:flutter_lints/flutter.yaml
+include: package:flutter_iconica_analysis/analysis_options.yaml
 
-# Additional information about this file can be found at
+# Possible to overwrite the rules from the package
-# https://dart.dev/guides/language/analysis-options
+
+analyzer:
+  exclude:
+
+linter:
+  rules:

example/pubspec.lock

@@ -68,7 +68,7 @@ packages:
       path: ".."
       relative: true
     source: path
-    version: "6.2.1"
+    version: "6.2.2"
   flutter_input_library:
     dependency: transitive
     description:

lib/flutter_form.dart

@@ -2,10 +2,11 @@
 //
 // SPDX-License-Identifier: BSD-3-Clause
 
+export 'package:flutter_input_library/flutter_input_library.dart'
+    show FlutterFormDateTimeType;
+
 export 'src/form.dart';
 export 'src/widgets/input/abstractions.dart';
 export 'src/widgets/input/input_types/input_types.dart';
-export 'package:flutter_input_library/flutter_input_library.dart'
-    show FlutterFormDateTimeType;
-export 'utils/translation_service.dart';
 export 'utils/form.dart';
+export 'utils/translation_service.dart';

lib/src/form.dart

@@ -3,18 +3,23 @@
 // SPDX-License-Identifier: BSD-3-Clause
 
 import 'package:flutter/material.dart';
-import '../flutter_form.dart';
+import 'package:flutter_form_wizard/flutter_form.dart';
-import 'utils/form_page_controller.dart';
+import 'package:flutter_form_wizard/src/utils/form_page_controller.dart';
-import 'utils/formstate.dart' as fs;
+import 'package:flutter_form_wizard/src/utils/formstate.dart' as fs;
 
-/// A wrapper for flutters [Form] that can be controlled by a controller and provides multiple pre-defined input types/fields
+/// A wrapper for flutters [Form] that can be controlled by a controller and
-/// [FlutterForm] also provides multi page forms and a check page for validation.
+/// provides multiple pre-defined input types/fields
+/// [FlutterForm] also provides multi page forms and a check page
+/// for validation.
 ///
-/// A [FlutterFormController] has to be given to control what happens to values and pages within the FlutterForm.
+/// A [FlutterFormController] has to be given to control what happens to values
+/// and pages within the FlutterForm.
 ///
-/// [FlutterFormOptions] have to be provided to control the appearance of the form.
+/// [FlutterFormOptions] have to be provided to control the appearance of
+/// the form.
 ///
-/// WARNING Define your FormInputController above your FlutterForm. Otherwise when rebuild the controller will differ from the registered ones.
+/// WARNING Define your FormInputController above your FlutterForm. Otherwise
+/// when rebuild the controller will differ from the registered ones.
 /// ``` dart
 /// FlutterFormInputEmailController emailController =
 ///     FlutterFormInputEmailController(id: 'email');
@@ -180,10 +185,10 @@ import 'utils/formstate.dart' as fs;
 /// ```
 class FlutterForm extends StatefulWidget {
   const FlutterForm({
-    Key? key,
     required this.options,
     required this.formController,
-  }) : super(key: key);
+    super.key,
+  });
 
   final FlutterFormOptions options;
   final FlutterFormController formController;
@@ -203,9 +208,9 @@ class _FlutterFormState extends State<FlutterForm> {
 
     _formController.setFlutterFormOptions(widget.options);
 
-    List<GlobalKey<FormState>> keys = [];
+    var keys = <GlobalKey<FormState>>[];
 
-    for (FlutterFormPage _ in widget.options.pages) {
+    for (var _ in widget.options.pages) {
       keys.add(GlobalKey<FormState>());
     }
 
@@ -215,9 +220,9 @@ class _FlutterFormState extends State<FlutterForm> {
       setState(() {});
     });
 
-    List<FlutterFormPageController> controllers = [];
+    var controllers = <FlutterFormPageController>[];
 
-    for (int i = 0; i < widget.options.pages.length; i++) {
+    for (var i = 0; i < widget.options.pages.length; i++) {
       controllers.add(FlutterFormPageController());
     }
 
@@ -278,27 +283,37 @@ class _FlutterFormState extends State<FlutterForm> {
               ),
           ],
         ),
-        widget.options.nextButton != null
+        if (widget.options.nextButton != null)
-            ? widget.options.nextButton!(_formController.getCurrentStep(),
+          widget.options.nextButton!(
-                _formController.getCheckpages())
+            _formController.getCurrentStep(),
-            : Align(
+            _formController.getCheckpages(),
-                alignment: AlignmentDirectional.bottomCenter,
+          )
-                child: ElevatedButton(
+        else
-                  style: ElevatedButton.styleFrom(
+          Align(
-                      backgroundColor: Theme.of(context).primaryColor,
+            alignment: AlignmentDirectional.bottomCenter,
-                      padding: const EdgeInsets.symmetric(
+            child: ElevatedButton(
-                          horizontal: 40, vertical: 15),
+              style: ElevatedButton.styleFrom(
-                      textStyle: const TextStyle(
+                backgroundColor: Theme.of(context).primaryColor,
-                          fontSize: 20, fontWeight: FontWeight.bold)),
+                padding: const EdgeInsets.symmetric(
-                  onPressed: () async {
+                  horizontal: 40,
-                    await _formController.autoNextStep();
+                  vertical: 15,
-                  },
+                ),
-                  child: Text(_formController.getCurrentStep() >=
+                textStyle: const TextStyle(
-                          widget.options.pages.length - 1
+                  fontSize: 20,
-                      ? "Finish"
+                  fontWeight: FontWeight.bold,
-                      : "Next"),
                 ),
               ),
+              onPressed: () async {
+                await _formController.autoNextStep();
+              },
+              child: Text(
+                _formController.getCurrentStep() >=
+                        widget.options.pages.length - 1
+                    ? 'Finish'
+                    : 'Next',
+              ),
+            ),
+          ),
         if (widget.options.backButton != null)
           widget.options.backButton!(
             _formController.getCurrentStep(),
@@ -310,12 +325,12 @@ class _FlutterFormState extends State<FlutterForm> {
   }
 
   List<Widget> getResultWidgets() {
-    List<Widget> widgets = [];
+    var widgets = <Widget>[];
 
     _formController.getAllResults().forEach(
       (pageNumber, pageResults) {
         pageResults.forEach((inputId, inputResult) {
-          FlutterFormInputController? inputController = _formController
+          var inputController = _formController
               .getFormPageControllers()[pageNumber]
               .getController(inputId);
 
@@ -327,10 +342,8 @@ class _FlutterFormState extends State<FlutterForm> {
                   inputController.checkPageTitle != null
                       ? inputController.checkPageTitle!(inputController.value)
                       : inputController.value.toString(),
-                  inputController.checkPageDescription != null
+                  inputController.checkPageDescription
-                      ? inputController
+                      ?.call(inputController.value),
-                          .checkPageDescription!(inputController.value)
-                      : null,
                   () async {
                     await _formController.jumpToPage(pageNumber);
                   },
@@ -378,7 +391,7 @@ class _FlutterFormState extends State<FlutterForm> {
                         Text(
                           inputController.checkPageDescription!(inputResult),
                           style: const TextStyle(fontSize: 16),
-                        )
+                        ),
                     ],
                   ),
                 ),
@@ -412,15 +425,14 @@ class FlutterFormController extends ChangeNotifier {
 
   late List<FlutterFormPageController> _formPageControllers;
 
-  List<FlutterFormPageController> getFormPageControllers() {
+  List<FlutterFormPageController> getFormPageControllers() =>
-    return _formPageControllers;
+      _formPageControllers;
-  }
 
-  setFormPageControllers(List<FlutterFormPageController> controllers) {
+  void setFormPageControllers(List<FlutterFormPageController> controllers) {
     _formPageControllers = controllers;
   }
 
-  disableCheckingPages() {
+  void voidisableCheckingPages() {
     _checkingPages = false;
 
     for (var controller in _formPageControllers) {
@@ -436,7 +448,9 @@ class FlutterFormController extends ChangeNotifier {
         FocusManager.instance.primaryFocus?.unfocus();
 
         _options.onNext(
-            _currentStep, _formPageControllers[_currentStep].getAllValues());
+          _currentStep,
+          _formPageControllers[_currentStep].getAllValues(),
+        );
 
         if (_currentStep >= _options.pages.length - 1 &&
                 _options.checkPage == null ||
@@ -449,9 +463,11 @@ class FlutterFormController extends ChangeNotifier {
 
             notifyListeners();
 
-            await _pageController.animateToPage(_currentStep,
+            await _pageController.animateToPage(
-                duration: const Duration(milliseconds: 250),
+              _currentStep,
-                curve: Curves.ease);
+              duration: const Duration(milliseconds: 250),
+              curve: Curves.ease,
+            );
           } else {
             _currentStep += 1;
 
@@ -462,9 +478,11 @@ class FlutterFormController extends ChangeNotifier {
 
             notifyListeners();
 
-            await _pageController.animateToPage(_currentStep,
+            await _pageController.animateToPage(
-                duration: const Duration(milliseconds: 250),
+              _currentStep,
-                curve: Curves.ease);
+              duration: const Duration(milliseconds: 250),
+              curve: Curves.ease,
+            );
           }
         }
       }
@@ -507,13 +525,14 @@ class FlutterFormController extends ChangeNotifier {
     return false;
   }
 
-  Map<String, dynamic> getCurrentStepResults() {
+  Map<String, dynamic> getCurrentStepResults() =>
-    return _formPageControllers[_currentStep].getAllValues();
+      _formPageControllers[_currentStep].getAllValues();
-  }
 
   Future<void> nextStep() async {
     _options.onNext(
-        _currentStep, _formPageControllers[_currentStep].getAllValues());
+      _currentStep,
+      _formPageControllers[_currentStep].getAllValues(),
+    );
 
     _currentStep += 1;
 
@@ -523,16 +542,19 @@ class FlutterFormController extends ChangeNotifier {
 
     notifyListeners();
 
-    await _pageController.animateToPage(_currentStep,
+    await _pageController.animateToPage(
-        duration: const Duration(milliseconds: 250), curve: Curves.ease);
+      _currentStep,
+      duration: const Duration(milliseconds: 250),
+      curve: Curves.ease,
+    );
   }
 
-  finishForm() {
+  void finishForm() {
     _options.onFinished(getAllResults());
   }
 
   Map<int, Map<String, dynamic>> getAllResults() {
-    Map<int, Map<String, dynamic>> allValues = {};
+    var allValues = <int, Map<String, dynamic>>{};
 
     for (var i = 0; i < _options.pages.length; i++) {
       allValues.addAll({i: _formPageControllers[i].getAllValues()});
@@ -540,27 +562,19 @@ class FlutterFormController extends ChangeNotifier {
     return allValues;
   }
 
-  setFlutterFormOptions(FlutterFormOptions options) {
+  void setFlutterFormOptions(FlutterFormOptions options) {
     _options = options;
   }
 
-  setKeys(List<GlobalKey<FormState>> keys) {
+  void setKeys(List<GlobalKey<FormState>> keys) {
     _keys = keys;
   }
 
-  List<GlobalKey<FormState>> getKeys() {
+  List<GlobalKey<FormState>> getKeys() => _keys;
-    return _keys;
-  }
 
-  int getCurrentStep() {
+  int getCurrentStep() => _currentStep;
-    return _currentStep;
-  }
 
-  bool getCheckpages() {
+  bool getCheckpages() => _checkingPages;
-    return _checkingPages;
-  }
 
-  PageController getPageController() {
+  PageController getPageController() => _pageController;
-    return _pageController;
-  }
 }

lib/src/utils/form_page_controller.dart

@@ -11,13 +11,12 @@ class FlutterFormPageController {
     _controllers.add(inputController);
   }
 
-  clearControllers() {
+  void clearControllers() {
     _controllers = [];
   }
 
-  bool _isRegisteredById(String id) {
+  bool _isRegisteredById(String id) =>
-    return _controllers.any((element) => (element.id == id));
+      _controllers.any((element) => element.id == id);
-  }
 
   FlutterFormInputController? getController(String key) {
     if (_isRegisteredById(key)) {
@@ -27,9 +26,9 @@ class FlutterFormPageController {
   }
 
   Map<String, dynamic> getAllValues() {
-    Map<String, dynamic> values = {};
+    var values = <String, dynamic>{};
 
-    for (FlutterFormInputController controller in _controllers) {
+    for (var controller in _controllers) {
       if (controller.value != null) {
         values.addAll({controller.id!: controller.value});
       }

lib/src/utils/formstate.dart

@@ -3,20 +3,19 @@
 // SPDX-License-Identifier: BSD-3-Clause
 
 import 'package:flutter/material.dart';
-import 'form_page_controller.dart';
+import 'package:flutter_form_wizard/src/utils/form_page_controller.dart';
 
 class FormState extends InheritedWidget {
   const FormState({
-    Key? key,
+    required super.child,
-    required Widget child,
     required this.formController,
-  }) : super(key: key, child: child);
+    super.key,
+  });
 
   final FlutterFormPageController formController;
 
   static FormState of(BuildContext context) {
-    final FormState? result =
+    var result = context.dependOnInheritedWidgetOfExactType<FormState>();
-        context.dependOnInheritedWidgetOfExactType<FormState>();
     assert(result != null, 'No FormStat found in context');
     return result!;
   }

lib/src/widgets/input/abstractions.dart

@@ -3,7 +3,7 @@
 // SPDX-License-Identifier: BSD-3-Clause
 
 import 'package:flutter/material.dart';
-import '/src/utils/formstate.dart' as fs;
+import 'package:flutter_form_wizard/src/utils/formstate.dart' as fs;
 
 /// Abstract class for the input widgets used in a [FlutterForm].
 ///
@@ -12,18 +12,19 @@ import '/src/utils/formstate.dart' as fs;
 ///
 /// label is a standard parameter to normally sets the label of the input.
 ///
-/// [registerController] should be called to register the given [controller] to the form page.
+/// [registerController] should be called to register the given [controller] to
+/// the form page.
 abstract class FlutterFormInputWidget<T> extends StatelessWidget {
   const FlutterFormInputWidget({
-    Key? key,
     required this.controller,
+    super.key,
     this.focusNode,
     this.label,
     this.enabled = true,
-    String? hintText,
+  });
-  }) : super(key: key);
 
-  /// The [controller] which determines how the value is handled and how the value is shown on the checkpage.
+  /// The [controller] which determines how the value is handled and how the
+  /// value is shown on the checkpage.
   final FlutterFormInputController<T> controller;
 
   /// [label] is a standard parameter to normally sets the label of the input.
@@ -33,9 +34,10 @@ abstract class FlutterFormInputWidget<T> extends StatelessWidget {
 
   final bool enabled;
 
-  /// [registerController] should be called to register the given [controller] to the form page.
+  /// [registerController] should be called to register the given [controller]
-  registerController(BuildContext context) {
+  /// to the form page.
-    FlutterFormInputController? localController =
+  void registerController(BuildContext context) {
+    var localController =
         fs.FormState.of(context).formController.getController(controller.id!);
 
     if (localController == null) {
@@ -48,11 +50,13 @@ abstract class FlutterFormInputWidget<T> extends StatelessWidget {
 ///
 /// The [id] determines the key in the [Map] returned by the [FlutterForm].
 ///
-/// [value] is a way to set a initial value and will be the value when change by the user.
+/// [value] is a way to set a initial value and will be the value when change
+/// by the user.
 ///
 /// [mandatory] determines if the input is mandatory.
 ///
-/// [checkPageTitle] is a function where you can transform the value from the input into something representable.
+/// [checkPageTitle] is a function where you can transform the value from the
+/// input into something representable.
 /// This value will be given when defining the check page widgets.
 /// If this function is not set, the value will be used as is.
 /// Example:
@@ -62,27 +66,32 @@ abstract class FlutterFormInputWidget<T> extends StatelessWidget {
 /// },
 /// ```
 ///
-/// [checkPageDescription] is the same as checkPageTitle but for the description.
+/// [checkPageDescription] is the same as checkPageTitle but for the 
-/// If null no description will be shown.
+/// description. If null no description will be shown.
 ///
-/// [onChanged] can be set to get the value whenever the user changes it. Should not be used to save the value.
+/// [onChanged] can be set to get the value whenever the user changes it. 
+/// Should not be used to save the value.
 ///
-/// [onSubmit] can be set to get the value whenever the user submits it. Should not be used to save the value.
+/// [onSubmit] can be set to get the value whenever the user submits it. 
+/// Should not be used to save the value.
 ///
-/// [onSaved] goes of when the save function is called for the page if [onValidate] return null.
+/// [onSaved] goes of when the save function is called for the page if 
+/// [onValidate] return null.
 ///
 /// [onValidate] is used to validate the given input by the user.
 abstract class FlutterFormInputController<T> {
   /// The [id] determines the key in the [Map] returned by the [FlutterForm].
   String? id;
 
-  /// [value] is a way to set a initial value and will be the value when change by the user.
+  /// [value] is a way to set a initial value and will be the value when 
+  /// change by the user.
   T? value;
 
   /// [mandatory] determines if the input is mandatory.
   bool mandatory = false;
 
-  /// [checkPageTitle] is a function where you can transform the value from the input into something representable.
+  /// [checkPageTitle] is a function where you can transform the value from the 
+  /// input into something representable.
   /// This value will be given when defining the check page widgets.
   /// If this function is not set, the value will be used as is.
   /// Example:
@@ -93,20 +102,26 @@ abstract class FlutterFormInputController<T> {
   /// ```
   String Function(T? value)? checkPageTitle;
 
-  /// [checkPageDescription] is the same as checkPageTitle but for the description.
+  /// [checkPageDescription] is the same as checkPageTitle but for the 
+  /// description.
   /// If null no description will be shown.
   String Function(T? value)? checkPageDescription;
 
-  /// [onChanged] can be set to get the value whenever the user changes it. Should not be used to save the value.
+  /// [onChanged] can be set to get the value whenever the user changes it. 
+  /// Should not be used to save the value.
   void Function(T? value)? onChanged;
 
-  /// [onSubmit] can be set to get the value whenever the user submits it. Should not be used to save the value.
+  /// [onSubmit] can be set to get the value whenever the user submits it. 
+  /// Should not be used to save the value.
   void Function(T? value)? onSubmit;
 
-  /// [onSaved] goes of when the save function is called for the page if [onValidate] return null.
+  /// [onSaved] goes of when the save function is called for the page if 
+  /// [onValidate] return null.
   void onSaved(T? value);
 
   /// [onValidate] is used to validate the given input by the user.
   String? onValidate(
-      T? value, String Function(String, {List<String>? params}) translator);
+    T? value,
+    String Function(String, {List<String>? params}) translator,
+  );
 }

lib/src/widgets/input/input_types/input_carousel/input_carousel.dart

@@ -15,24 +15,24 @@ import 'package:flutter_input_library/flutter_input_library.dart' as input;
 /// Height sets the height of the inputfield. Default to 425.
 class FlutterFormInputCarousel extends FlutterFormInputWidget<int> {
   const FlutterFormInputCarousel({
-    Key? key,
+    required super.controller,
-    required FlutterFormInputController<int> controller,
-    Widget? label,
     required this.items,
+    super.key,
+    super.label,
     this.height = 425,
-  }) : super(key: key, controller: controller, label: label);
+  });
 
   final List<Widget> items;
   final double height;
 
   @override
   Widget build(BuildContext context) {
-    String Function(String, {List<String>? params}) _ = getTranslator(context);
+    var _ = getTranslator(context);
 
     super.registerController(context);
 
     return input.FlutterFormInputCarousel(
-      onSaved: (value) => controller.onSaved(value),
+      onSaved: controller.onSaved,
       validator: (value) => controller.onValidate(value, _),
       onChanged: controller.onChanged,
       initialValue: controller.value ?? 0,
@@ -42,7 +42,8 @@ class FlutterFormInputCarousel extends FlutterFormInputWidget<int> {
   }
 }
 
-/// Controller for the carousel used by a [FlutterFormInputWidget] used in a [FlutterForm].
+/// Controller for the carousel used by a [FlutterFormInputWidget] used in 
+/// a [FlutterForm].
 ///
 /// Mainly used by [FlutterFormInputCarousel].
 class FlutterFormInputCarouselController
@@ -84,7 +85,9 @@ class FlutterFormInputCarouselController
 
   @override
   String? onValidate(
-      int? value, String Function(String, {List<String>? params}) translator) {
+    int? value,
+    String Function(String, {List<String>? params}) translator,
+  ) {
     if (mandatory) {}
 
     return null;

lib/src/widgets/input/input_types/input_date_picker/input_date_picker.dart

@@ -5,22 +5,21 @@
 // ignore_for_file: overridden_fields, annotate_overrides
 
 import 'package:flutter/material.dart';
+import 'package:flutter_form_wizard/flutter_form.dart';
 import 'package:flutter_input_library/flutter_input_library.dart' as input;
 import 'package:intl/intl.dart';
 
-import '../../../../../flutter_form.dart';
-
 /// Input for a dateTime used in a [FlutterForm].
 ///
 /// Standard controller is [FlutterFormInputDateController].
 class FlutterFormInputDateTime extends FlutterFormInputWidget<String> {
   const FlutterFormInputDateTime({
-    Key? key,
+    required super.controller,
-    required FlutterFormInputController<String> controller,
-    Widget? label,
-    this.showIcon = true,
     required this.inputType,
     required this.dateFormat,
+    super.key,
+    super.label,
+    this.showIcon = true,
     this.firstDate,
     this.lastDate,
     this.initialDate,
@@ -28,11 +27,7 @@ class FlutterFormInputDateTime extends FlutterFormInputWidget<String> {
     this.icon = Icons.calendar_today,
     this.enabled = true,
     this.onTapEnabled = true,
-  }) : super(
+  });
-          key: key,
-          controller: controller,
-          label: label,
-        );
   final bool showIcon;
   final input.FlutterFormDateTimeType inputType;
   final DateFormat dateFormat;
@@ -46,7 +41,7 @@ class FlutterFormInputDateTime extends FlutterFormInputWidget<String> {
 
   @override
   Widget build(BuildContext context) {
-    String Function(String, {List<String>? params}) _ = getTranslator(context);
+    var _ = getTranslator(context);
     super.registerController(context);
 
     return input.FlutterFormInputDateTime(
@@ -59,7 +54,7 @@ class FlutterFormInputDateTime extends FlutterFormInputWidget<String> {
       lastDate: lastDate,
       inputType: inputType,
       onChanged: (value) => controller.onChanged?.call(value),
-      onSaved: (value) => controller.onSaved(value),
+      onSaved: controller.onSaved,
       validator: (value) => controller.onValidate(value, _),
       initialValue: controller.value,
       dateFormat: dateFormat,
@@ -69,21 +64,22 @@ class FlutterFormInputDateTime extends FlutterFormInputWidget<String> {
   }
 }
 
-/// Controller for dates used by a [FlutterFormInputWidget] used in a [FlutterForm].
+/// Controller for dates used by a [FlutterFormInputWidget] used in a 
+/// [FlutterForm].
 ///
 /// Mainly used by [FlutterFormInputDateTime].
 class FlutterFormInputDateTimeController
     implements FlutterFormInputController<String> {
   FlutterFormInputDateTimeController({
     required this.id,
+    required this.dateTimeType,
+    required this.dateFormat,
     this.mandatory = true,
     this.value,
     this.checkPageTitle,
     this.checkPageDescription,
     this.initialDate,
     this.initialDateTimeRange,
-    required this.dateTimeType,
-    required this.dateFormat,
     this.onChanged,
   }) {
     if (value != null) {
@@ -118,13 +114,15 @@ class FlutterFormInputDateTimeController
   void Function(String? value)? onSubmit;
 
   @override
-  void onSaved(dynamic value) {
+  void onSaved(value) {
     this.value = value;
   }
 
   @override
-  String? onValidate(String? value,
+  String? onValidate(
-      String Function(String, {List<String>? params}) translator) {
+    String? value,
+    String Function(String, {List<String>? params}) translator,
+  ) {
     if (mandatory) {
       if (value == null || value.isEmpty) {
         return translator('shell.form.error.empty');

lib/src/widgets/input/input_types/input_email.dart

@@ -3,31 +3,26 @@
 // SPDX-License-Identifier: BSD-3-Clause
 
 import 'package:flutter/material.dart';
+import 'package:flutter_form_wizard/flutter_form.dart';
 import 'package:flutter_input_library/flutter_input_library.dart' as input;
 
-import '../../../../flutter_form.dart';
-
 /// Input for an email used in a [FlutterForm].
 ///
 /// Standard controller is [FlutterFormInputEmailController].
 class FlutterFormInputEmail extends FlutterFormInputWidget<String> {
   const FlutterFormInputEmail({
-    Key? key,
+    required super.controller,
-    required FlutterFormInputController<String> controller,
+    super.key,
-    FocusNode? focusNode,
+    super.focusNode,
-    Widget? label,
+    super.label,
     bool? enabled,
   }) : super(
-          key: key,
-          controller: controller,
-          focusNode: focusNode,
-          label: label,
           enabled: enabled ?? true,
         );
 
   @override
   Widget build(BuildContext context) {
-    String Function(String, {List<String>? params}) _ = getTranslator(context);
+    var _ = getTranslator(context);
 
     super.registerController(context);
 
@@ -42,13 +37,14 @@ class FlutterFormInputEmail extends FlutterFormInputWidget<String> {
       onChanged: (value) => controller.onChanged?.call(value),
       decoration: InputDecoration(
         focusColor: Theme.of(context).primaryColor,
-        label: label ?? const Text("Email"),
+        label: label ?? const Text('Email'),
       ),
     );
   }
 }
 
-/// Controller for emails used by a [FlutterFormInputWidget] used in a [FlutterForm].
+/// Controller for emails used by a [FlutterFormInputWidget] used in
+/// a [FlutterForm].
 ///
 /// Mainly used by [FlutterFormInputEmail].
 class FlutterFormInputEmailController
@@ -85,21 +81,23 @@ class FlutterFormInputEmailController
   void Function(String? value)? onSubmit;
 
   @override
-  void onSaved(dynamic value) {
+  void onSaved(value) {
     this.value = value;
   }
 
   @override
-  String? onValidate(String? value,
+  String? onValidate(
-      String Function(String, {List<String>? params}) translator) {
+    String? value,
+    String Function(String, {List<String>? params}) translator,
+  ) {
     if (mandatory) {
       if (value == null || value.isEmpty) {
         return translator('shell.form.error.empty');
       }
 
       if (!RegExp(
-              r"^[a-zA-Z0-9.a-zA-Z0-9.!#$%&'*+-/=?^_`{|}~]+@[a-zA-Z0-9]+\.[a-zA-Z]+")
+        r"^[a-zA-Z0-9.a-zA-Z0-9.!#$%&'*+-/=?^_`{|}~]+@[a-zA-Z0-9]+\.[a-zA-Z]+",
-          .hasMatch(value)) {
+      ).hasMatch(value)) {
         return translator('shell.form.error.email.notValid');
       }
     }

lib/src/widgets/input/input_types/input_number_picker/input_number_picker.dart

@@ -3,8 +3,8 @@
 // SPDX-License-Identifier: BSD-3-Clause
 
 import 'package:flutter/material.dart';
+import 'package:flutter_form_wizard/flutter_form.dart';
 import 'package:flutter_input_library/flutter_input_library.dart' as input;
-import '../../../../../flutter_form.dart';
 
 /// Input for a number used in a [FlutterForm].
 ///
@@ -14,28 +14,26 @@ import '../../../../../flutter_form.dart';
 /// Standard controller is [FlutterFormInputNumberPickerController].
 class FlutterFormInputNumberPicker extends FlutterFormInputWidget<int> {
   const FlutterFormInputNumberPicker({
-    Key? key,
+    required super.controller,
-    required FlutterFormInputController<int> controller,
+    super.key,
-    Widget? label,
+    super.label,
-    FocusNode? focusNode,
     this.minValue = 0,
     this.maxValue = 100,
-  })  : assert(minValue < maxValue),
+  }) : assert(minValue < maxValue, 'minValue must be less than maxValue');
-        super(key: key, controller: controller, label: label);
 
   final int minValue;
   final int maxValue;
 
   @override
   Widget build(BuildContext context) {
-    String Function(String, {List<String>? params}) _ = getTranslator(context);
+    var _ = getTranslator(context);
 
     super.registerController(context);
 
     return input.FlutterFormInputNumberPicker(
       minValue: minValue,
       maxValue: maxValue,
-      onSaved: (value) => controller.onSaved(value),
+      onSaved: controller.onSaved,
       validator: (value) => controller.onValidate(value, _),
       onChanged: (value) => controller.onChanged?.call(value),
       initialValue: controller.value ?? minValue,
@@ -82,7 +80,9 @@ class FlutterFormInputNumberPickerController
 
   @override
   String? onValidate(
-      int? value, String Function(String, {List<String>? params}) translator) {
+    int? value,
+    String Function(String, {List<String>? params}) translator,
+  ) {
     if (mandatory) {}
 
     return null;

lib/src/widgets/input/input_types/input_password/input_password.dart

@@ -3,24 +3,20 @@
 // SPDX-License-Identifier: BSD-3-Clause
 
 import 'package:flutter/material.dart';
+import 'package:flutter_form_wizard/flutter_form.dart';
 import 'package:flutter_input_library/flutter_input_library.dart' as input;
-import '../../../../../flutter_form.dart';
 
 /// Input for a password used in a [FlutterForm].
 ///
 /// Standard controller is [FlutterFormInputEmailController].
 class FlutterFormInputPassword extends FlutterFormInputWidget<String> {
   const FlutterFormInputPassword({
-    Key? key,
+    required super.controller,
-    required FlutterFormInputController<String> controller,
+    super.key,
-    FocusNode? focusNode,
+    super.focusNode,
-    Widget? label,
+    super.label,
     bool? enabled,
   }) : super(
-          key: key,
-          controller: controller,
-          focusNode: focusNode,
-          label: label,
           enabled: enabled ?? true,
         );
 
@@ -28,13 +24,13 @@ class FlutterFormInputPassword extends FlutterFormInputWidget<String> {
   Widget build(BuildContext context) {
     super.registerController(context);
 
-    String Function(String, {List<String>? params}) _ = getTranslator(context);
+    var _ = getTranslator(context);
 
     return input.FlutterFormInputPassword(
       enabled: enabled,
       initialValue: controller.value,
       focusNode: focusNode,
-      onSaved: (value) => controller.onSaved(value),
+      onSaved: controller.onSaved,
       validator: (value) => controller.onValidate(value, _),
       onChanged: (value) => controller.onChanged?.call(value),
       onFieldSubmitted: (value) => controller.onSubmit?.call(value),
@@ -42,7 +38,8 @@ class FlutterFormInputPassword extends FlutterFormInputWidget<String> {
   }
 }
 
-/// Controller for passwords used by a [FlutterFormInputWidget] used in a [ShellFrom].
+/// Controller for passwords used by a [FlutterFormInputWidget] used in a
+/// [ShellFrom].
 ///
 /// Mainly used by [FlutterFormInputPassword].
 class FlutterFormInputPasswordController
@@ -79,13 +76,15 @@ class FlutterFormInputPasswordController
   void Function(String? value)? onSubmit;
 
   @override
-  void onSaved(dynamic value) {
+  void onSaved(value) {
     this.value = value;
   }
 
   @override
-  String? onValidate(String? value,
+  String? onValidate(
-      String Function(String, {List<String>? params}) translator) {
+    String? value,
+    String Function(String, {List<String>? params}) translator,
+  ) {
     if (mandatory) {
       if (value == null || value.isEmpty) {
         return translator('Field can not be empty');

lib/src/widgets/input/input_types/input_plain_text.dart

@@ -5,19 +5,18 @@
 // ignore_for_file: overridden_fields
 
 import 'package:flutter/material.dart';
+import 'package:flutter_form_wizard/flutter_form.dart';
 import 'package:flutter_input_library/flutter_input_library.dart' as input;
 
-import '../../../../flutter_form.dart';
-
 /// Input for plain text input used in a [FlutterForm].
 ///
 /// Standard controller is [FlutterFormInputPlainTextController].
 class FlutterFormInputPlainText extends FlutterFormInputWidget<String> {
   const FlutterFormInputPlainText({
-    Key? key,
+    required super.controller,
-    required FlutterFormInputController<String> controller,
+    super.key,
-    FocusNode? focusNode,
+    super.focusNode,
-    Widget? label,
+    super.label,
     this.decoration,
     this.textAlignVertical,
     this.expands = false,
@@ -28,11 +27,7 @@ class FlutterFormInputPlainText extends FlutterFormInputWidget<String> {
     this.enabled = true,
     this.style,
     this.textCapitalization = TextCapitalization.none,
-  }) : super(
+  });
-            key: key,
-            controller: controller,
-            focusNode: focusNode,
-            label: label);
 
   final InputDecoration? decoration;
   final TextAlignVertical? textAlignVertical;
@@ -48,13 +43,13 @@ class FlutterFormInputPlainText extends FlutterFormInputWidget<String> {
 
   @override
   Widget build(BuildContext context) {
-    String Function(String, {List<String>? params}) _ = getTranslator(context);
+    var _ = getTranslator(context);
 
     super.registerController(context);
 
-    InputDecoration inputDecoration = decoration ??
+    var inputDecoration = decoration ??
         InputDecoration(
-          label: label ?? const Text("Plain text"),
+          label: label ?? const Text('Plain text'),
         );
 
     return input.FlutterFormInputPlainText(
@@ -63,7 +58,7 @@ class FlutterFormInputPlainText extends FlutterFormInputWidget<String> {
       scrollPadding: scrollPadding ?? const EdgeInsets.all(20.0),
       initialValue: controller.value,
       focusNode: focusNode,
-      onSaved: (value) => controller.onSaved(value),
+      onSaved: controller.onSaved,
       validator: (value) => controller.onValidate(value, _),
       onChanged: (value) => controller.onChanged?.call(value),
       onFieldSubmitted: (value) => controller.onSubmit?.call(value),
@@ -87,15 +82,15 @@ class FlutterFormInputPlainText extends FlutterFormInputWidget<String> {
 /// MaxCharacters can be set to set a maximum amount of characters.
 class FlutterFormInputMultiLine extends StatelessWidget {
   const FlutterFormInputMultiLine({
-    Key? key,
     required this.controller,
+    super.key,
     this.focusNode,
     this.label,
     this.hint,
     this.maxCharacters,
     this.enabled = true,
     this.textCapitalization = TextCapitalization.sentences,
-  }) : super(key: key);
+  });
 
   final FlutterFormInputController<String> controller;
   final Widget? label;
@@ -108,7 +103,7 @@ class FlutterFormInputMultiLine extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
-    String Function(String, {List<String>? params}) _ = getTranslator(context);
+    var _ = getTranslator(context);
 
     return input.FlutterFormInputMultiLine(
       enabled: enabled,
@@ -125,7 +120,8 @@ class FlutterFormInputMultiLine extends StatelessWidget {
   }
 }
 
-/// Controller for plain text used by a [FlutterFormInputWidget] used in a [FlutterForm].
+/// Controller for plain text used by a [FlutterFormInputWidget] used in a
+/// [FlutterForm].
 ///
 /// Mainly used by [FlutterFormInputPlainText].
 class FlutterFormInputPlainTextController
@@ -167,8 +163,10 @@ class FlutterFormInputPlainTextController
   }
 
   @override
-  String? onValidate(String? value,
+  String? onValidate(
-      String Function(String, {List<String>? params}) translator) {
+    String? value,
+    String Function(String, {List<String>? params}) translator,
+  ) {
     if (mandatory) {
       if (value == null || value.isEmpty) {
         return translator('Field can not be empty');

lib/src/widgets/input/input_types/input_slider/input_slider.dart

@@ -3,46 +3,42 @@
 // SPDX-License-Identifier: BSD-3-Clause
 
 import 'package:flutter/material.dart';
+import 'package:flutter_form_wizard/flutter_form.dart';
 import 'package:flutter_input_library/flutter_input_library.dart' as input;
 
-import '../../../../../flutter_form.dart';
+/// Input for a number value between two values via a slider. Used in a
-
+/// [FlutterForm].
-/// Input for a number value between two values via a slider. Used in a [FlutterForm].
 ///
 /// Standard controller is [FlutterFormInputSliderController].
 class FlutterFormInputSlider extends FlutterFormInputWidget<double> {
   const FlutterFormInputSlider({
-    Key? key,
+    required super.controller,
-    required FlutterFormInputController<double> controller,
+    super.key,
-    FocusNode? focusNode,
+    super.focusNode,
-    Widget? label,
+    super.label,
     this.minValue = 0,
     this.maxValue = 100,
-  })  : assert(minValue < maxValue),
+  }) : assert(minValue < maxValue, 'minValue must be less than maxValue');
-        super(
-            key: key,
-            controller: controller,
-            focusNode: focusNode,
-            label: label);
 
   final int minValue;
   final int maxValue;
 
   @override
   Widget build(BuildContext context) {
-    String Function(String, {List<String>? params}) _ = getTranslator(context);
+    var _ = getTranslator(context);
 
     super.registerController(context);
 
     return input.FlutterFormInputSlider(
       focusNode: focusNode,
-      onSaved: (value) => controller.onSaved(value),
+      onSaved: controller.onSaved,
       validator: (value) => controller.onValidate(value, _),
     );
   }
 }
 
-/// Controller for slider used by a [FlutterFormInputWidget] used in a [FlutterForm].
+/// Controller for slider used by a [FlutterFormInputWidget] used in a
+/// [FlutterForm].
 ///
 /// Mainly used by [FlutterFormInputSlider].
 class FlutterFormInputSliderController
@@ -83,8 +79,10 @@ class FlutterFormInputSliderController
   }
 
   @override
-  String? onValidate(double? value,
+  String? onValidate(
-      String Function(String, {List<String>? params}) translator) {
+    double? value,
+    String Function(String, {List<String>? params}) translator,
+  ) {
     if (mandatory) {}
 
     return null;

lib/src/widgets/input/input_types/input_switch/input_switch.dart

@@ -2,6 +2,8 @@
 //
 // SPDX-License-Identifier: BSD-3-Clause
 
+// ignore_for_file: avoid_positional_boolean_parameters
+
 import 'package:flutter/material.dart';
 import 'package:flutter_form_wizard/flutter_form.dart';
 import 'package:flutter_input_library/flutter_input_library.dart' as input;
@@ -11,25 +13,21 @@ import 'package:flutter_input_library/flutter_input_library.dart' as input;
 /// Standard controller is [FlutterFormInputSwitchController].
 class FlutterFormInputSwitch extends FlutterFormInputWidget<bool> {
   const FlutterFormInputSwitch({
-    Key? key,
+    required super.controller,
-    required FlutterFormInputController<bool> controller,
+    super.key,
-    FocusNode? focusNode,
+    super.focusNode,
-    Widget? label,
+    super.label,
-  }) : super(
+  });
-            key: key,
-            controller: controller,
-            focusNode: focusNode,
-            label: label);
 
   @override
   Widget build(BuildContext context) {
-    String Function(String, {List<String>? params}) _ = getTranslator(context);
+    var _ = getTranslator(context);
 
     super.registerController(context);
 
     return input.FlutterFormInputBool(
       focusNode: focusNode,
-      onSaved: (value) => controller.onSaved(value),
+      onSaved: controller.onSaved,
       onChanged: controller.onChanged,
       validator: (value) => controller.onValidate(value, _),
       initialValue: controller.value ?? false,
@@ -38,7 +36,8 @@ class FlutterFormInputSwitch extends FlutterFormInputWidget<bool> {
   }
 }
 
-/// Controller for the switch used by a [FlutterFormInputWidget] used in a [FlutterForm].
+/// Controller for the switch used by a [FlutterFormInputWidget] used in a
+/// [FlutterForm].
 ///
 /// Mainly used by [FlutterFormInputSwitch].
 class FlutterFormInputSwitchController
@@ -80,7 +79,8 @@ class FlutterFormInputSwitchController
 
   @override
   String? onValidate(
-      bool? value, String Function(String, {List<String>? params}) translator) {
+    bool? value,
-    return null;
+    String Function(String, {List<String>? params}) translator,
-  }
+  ) =>
+      null;
 }

lib/src/widgets/input/input_types/input_types.dart

@@ -3,10 +3,10 @@
 // SPDX-License-Identifier: BSD-3-Clause
 
 export 'input_carousel/input_carousel.dart';
+export 'input_date_picker/input_date_picker.dart';
 export 'input_email.dart';
 export 'input_number_picker/input_number_picker.dart';
 export 'input_password/input_password.dart';
 export 'input_plain_text.dart';
 export 'input_slider/input_slider.dart';
 export 'input_switch/input_switch.dart';
-export 'input_date_picker/input_date_picker.dart';

lib/utils/form.dart

@@ -2,27 +2,45 @@
 //
 // SPDX-License-Identifier: BSD-3-Clause
 
+// ignore_for_file: avoid_positional_boolean_parameters
+
 import 'package:flutter/material.dart';
 
 /// The options used to set parameters to a [FlutterForm].
 ///
-/// The pages determine what pages the pageview will contain via a [List] of [FlutterFormPage]s.
+/// The pages determine what pages the pageview will contain via a [List] of
+/// [FlutterFormPage]s.
 ///
-/// Using a checkpage gives the ability for the user to check all input values before commiting by [CheckPage].
+/// Using a checkpage gives the ability for the user to check all input values
+/// before commiting by [CheckPage].
 /// If [checkPage] is null no check page will be shown.
 ///
 /// [nextButton] and [backButton] are both a way to give controls to user.
-/// Both are just plain widgets used in a [Stack]. So the widgets can be aligned where ever.
+/// Both are just plain widgets used in a [Stack]. So the widgets can be
+/// aligned where ever.
 /// The formcontroller of [FlutterForm] should be used to give control to the widgets/buttons.
 ///
 /// [onFinished] and [onNext] are both callbacks which give the users results.
 /// [onNext] is called when the user goes to the next page.
-/// [onFinished] is called when the form is finished. When checkpage is set [onFinished] is called when the checkpage is finished.
+/// [onFinished] is called when the form is finished. When checkpage is set
+/// [onFinished] is called when the checkpage is finished.
 ///
-/// [scrollDirection] can be set to change the Axis on which the pageview slides. Defaults to horizontal.
+/// [scrollDirection] can be set to change the Axis on which the pageview
+/// slides. Defaults to horizontal.
 ///
-/// [scrollPhysics] can be set to set the scroll phyisics of the scroll views in each page. Default to [ClampingScrollPhysics].
+/// [scrollPhysics] can be set to set the scroll phyisics of the scroll views
+/// in each page. Default to [ClampingScrollPhysics].
 class FlutterFormOptions {
+  const FlutterFormOptions({
+    required this.pages,
+    required this.onFinished,
+    required this.onNext,
+    this.checkPage,
+    this.nextButton,
+    this.backButton,
+    this.scrollDirection = Axis.horizontal,
+    this.scrollPhysics,
+  });
   final List<FlutterFormPage> pages;
 
   final CheckPage? checkPage;
@@ -33,30 +51,19 @@ class FlutterFormOptions {
   final void Function(int pageNumber, Map<String, dynamic>) onNext;
   final Axis scrollDirection;
   final ScrollPhysics? scrollPhysics;
-
-  const FlutterFormOptions({
-    required this.pages,
-    this.checkPage,
-    this.nextButton,
-    this.backButton,
-    required this.onFinished,
-    required this.onNext,
-    this.scrollDirection = Axis.horizontal,
-    this.scrollPhysics,
-  });
 }
 
 /// The defines every page in a [FlutterForm].
 class FlutterFormPage {
-  final Widget child;
-
   FlutterFormPage({
     required this.child,
   });
+  final Widget child;
 }
 
 /// [CheckPage] is used to set a check page at the end of a [FlutterForm].
-/// A [CheckPage] is a page where the user can check all input values before commiting.
+/// A [CheckPage] is a page where the user can check all input values before 
+/// commiting.
 ///
 /// [title] is the widget shown at the top of the page.
 ///
@@ -64,22 +71,28 @@ class FlutterFormPage {
 ///
 /// [inputCheckWidget] determines how every input is represented on the page.
 /// [title] is the value given in the input.
-/// This input can be modified by setting the [checkPageTitle] of that input controller.
+/// This input can be modified by setting the [checkPageTitle] of that input 
+/// controller.
 ///
-/// Same for the [description] but if the description is not set in the input controller no description will be given.
+/// Same for the [description] but if the description is not set in the input 
+/// controller no description will be given.
 ///
-/// [onPressed] can be set so that when the user triggers it the user will be sent back to the page including the input.
+/// [onPressed] can be set so that when the user triggers it the user will be 
-/// Here the user can modify the input and save it. Afterwards the user will be sent back to the check page.
+/// sent back to the page including the input.
+/// Here the user can modify the input and save it. Afterwards the user will be 
+/// sent back to the check page.
 class CheckPage {
-  final Widget? title;
-  final MainAxisAlignment mainAxisAlignment;
-  final Widget Function(
-          String id, String title, String? description, Function onPressed)?
-      inputCheckWidget;
-
   const CheckPage({
     this.title,
     this.inputCheckWidget,
     this.mainAxisAlignment = MainAxisAlignment.start,
   });
+  final Widget? title;
+  final MainAxisAlignment mainAxisAlignment;
+  final Widget Function(
+    String id,
+    String title,
+    String? description,
+    Function onPressed,
+  )? inputCheckWidget;
 }

lib/utils/translation_service.dart

@@ -23,14 +23,11 @@ typedef Translator = String Function(
 
 class ShellTranslationService implements TranslationService {
   @override
-  String number(double value) {
+  String number(double value) => value.toStringAsFixed(2);
-    return value.toStringAsFixed(2);
-  }
 
   @override
-  String translate(BuildContext context, String key, {List<String>? params}) {
+  String translate(BuildContext context, String key, {List<String>? params}) =>
-    return key;
+      key;
-  }
 }
 
 Translator getTranslator(BuildContext context) {
@@ -39,15 +36,13 @@ Translator getTranslator(BuildContext context) {
     return (
       String key, {
       List<String>? params,
-    }) {
+    }) =>
-      return translator(context, key, params: params);
+        translator(context, key, params: params);
-    };
+  } on Exception catch (_) {
-  } catch (e) {
     return (
       String key, {
       List<String>? params,
-    }) {
+    }) =>
-      return key;
+        key;
-    };
   }
 }

pubspec.yaml

@@ -1,6 +1,6 @@
 name: flutter_form_wizard
 description: A new Flutter package project.
-version: 6.2.2
+version: 6.2.3
 homepage: https://github.com/Iconica-Development/flutter_form_wizard
 
 publish_to: none
@@ -23,7 +23,10 @@ dependencies:
 dev_dependencies:
   flutter_test:
     sdk: flutter
-  flutter_lints: ^2.0.0
+  flutter_iconica_analysis:
+    git:
+      url: https://github.com/Iconica-Development/flutter_iconica_analysis
+      ref: 6.0.0
 
 flutter:
 

test/flutter_form_test.dart

@@ -8,7 +8,7 @@ import 'package:flutter_test/flutter_test.dart';
 
 void main() {
   testWidgets('Normal walk through without check page', (tester) async {
-    FlutterFormController formController = FlutterFormController();
+    var formController = FlutterFormController();
 
     var testField1Controller = FlutterFormInputPlainTextController(
       id: 'Field1',
@@ -28,21 +28,21 @@ void main() {
         home: Material(
           child: FlutterForm(
             options: FlutterFormOptions(
-              nextButton: (pageNumber, checkingPages) {
+              nextButton: (pageNumber, checkingPages) => Align(
-                return Align(
+                alignment: Alignment.bottomCenter,
-                  alignment: Alignment.bottomCenter,
+                child: ElevatedButton(
-                  child: ElevatedButton(
+                  onPressed: () async {
-                    onPressed: () async {
+                    await formController.autoNextStep();
-                      await formController.autoNextStep();
+                  },
-                    },
+                  child: Text(
-                    child: Text(pageNumber == 0
+                    pageNumber == 0
                         ? 'next1'
                         : pageNumber == 1
                             ? 'next2'
-                            : 'finish'),
+                            : 'finish',
                   ),
-                );
+                ),
-              },
+              ),
               onFinished: (Map<int, Map<String, dynamic>> results) {
                 onFinishResults = results;
               },
@@ -76,7 +76,9 @@ void main() {
     );
 
     await tester.enterText(
-        find.widgetWithText(TextFormField, 'Field1Label'), 'Field1Input');
+      find.widgetWithText(TextFormField, 'Field1Label'),
+      'Field1Input',
+    );
     await tester.tap(find.widgetWithText(ElevatedButton, 'next1'));
     await tester.pumpAndSettle();
 
@@ -84,21 +86,26 @@ void main() {
     expect({'Field1': 'Field1Input'}, onNextResults);
 
     await tester.enterText(
-        find.widgetWithText(TextFormField, 'Field2Label'), 'Field2Input');
+      find.widgetWithText(TextFormField, 'Field2Label'),
+      'Field2Input',
+    );
     await tester.tap(find.widgetWithText(ElevatedButton, 'next2'));
     await tester.pumpAndSettle();
 
     expect(1, onNextPageNumber);
     expect({'Field2': 'Field2Input'}, onNextResults);
 
-    expect({
+    expect(
-      0: {'Field1': 'Field1Input'},
+      {
-      1: {'Field2': 'Field2Input'}
+        0: {'Field1': 'Field1Input'},
-    }, onFinishResults);
+        1: {'Field2': 'Field2Input'},
+      },
+      onFinishResults,
+    );
   });
 
   testWidgets('Normal walk through with check page', (tester) async {
-    FlutterFormController formController = FlutterFormController();
+    var formController = FlutterFormController();
 
     var testField1Controller = FlutterFormInputPlainTextController(
       id: 'Field1',
@@ -119,21 +126,21 @@ void main() {
           child: FlutterForm(
             options: FlutterFormOptions(
               checkPage: const CheckPage(),
-              nextButton: (pageNumber, checkingPages) {
+              nextButton: (pageNumber, checkingPages) => Align(
-                return Align(
+                alignment: Alignment.bottomCenter,
-                  alignment: Alignment.bottomCenter,
+                child: ElevatedButton(
-                  child: ElevatedButton(
+                  onPressed: () async {
-                    onPressed: () async {
+                    await formController.autoNextStep();
-                      await formController.autoNextStep();
+                  },
-                    },
+                  child: Text(
-                    child: Text(pageNumber == 0
+                    pageNumber == 0
                         ? 'next1'
                         : pageNumber == 1
                             ? 'next2'
-                            : 'finish'),
+                            : 'finish',
                   ),
-                );
+                ),
-              },
+              ),
               onFinished: (Map<int, Map<String, dynamic>> results) {
                 onFinishResults = results;
               },
@@ -167,7 +174,9 @@ void main() {
     );
 
     await tester.enterText(
-        find.widgetWithText(TextFormField, 'Field1Label'), 'Field1Input');
+      find.widgetWithText(TextFormField, 'Field1Label'),
+      'Field1Input',
+    );
     await tester.tap(find.widgetWithText(ElevatedButton, 'next1'));
     await tester.pumpAndSettle();
 
@@ -175,7 +184,9 @@ void main() {
     expect({'Field1': 'Field1Input'}, onNextResults);
 
     await tester.enterText(
-        find.widgetWithText(TextFormField, 'Field2Label'), 'Field2Input');
+      find.widgetWithText(TextFormField, 'Field2Label'),
+      'Field2Input',
+    );
     await tester.tap(find.widgetWithText(ElevatedButton, 'next2'));
     await tester.pumpAndSettle();
 
@@ -186,24 +197,29 @@ void main() {
     await tester.pumpAndSettle();
 
     await tester.enterText(
-        find.widgetWithText(TextFormField, 'Field1Label'), 'Field1Input2');
+      find.widgetWithText(TextFormField, 'Field1Label'),
+      'Field1Input2',
+    );
     await tester.tap(find.widgetWithText(ElevatedButton, 'next1'));
     await tester.pumpAndSettle();
 
     expect(0, onNextPageNumber);
     expect({'Field1': 'Field1Input2'}, onNextResults);
 
-    await tester.tap(find.widgetWithText(ElevatedButton, "finish"));
+    await tester.tap(find.widgetWithText(ElevatedButton, 'finish'));
     await tester.pumpAndSettle();
 
-    expect({
+    expect(
-      0: {'Field1': 'Field1Input2'},
+      {
-      1: {'Field2': 'Field2Input'}
+        0: {'Field1': 'Field1Input2'},
-    }, onFinishResults);
+        1: {'Field2': 'Field2Input'},
+      },
+      onFinishResults,
+    );
   });
 
   testWidgets('Wrong input with mandatory validator', (tester) async {
-    FlutterFormController formController = FlutterFormController();
+    var formController = FlutterFormController();
 
     var testField1Controller = FlutterFormInputPlainTextController(
       id: 'Field1',
@@ -220,17 +236,15 @@ void main() {
         home: Material(
           child: FlutterForm(
             options: FlutterFormOptions(
-              nextButton: (pageNumber, checkingPages) {
+              nextButton: (pageNumber, checkingPages) => Align(
-                return Align(
+                alignment: Alignment.bottomCenter,
-                  alignment: Alignment.bottomCenter,
+                child: ElevatedButton(
-                  child: ElevatedButton(
+                  onPressed: () async {
-                    onPressed: () async {
+                    await formController.autoNextStep();
-                      await formController.autoNextStep();
+                  },
-                    },
+                  child: const Text('finish'),
-                    child: const Text('finish'),
+                ),
-                  ),
+              ),
-                );
-              },
               onFinished: (Map<int, Map<String, dynamic>> results) {
                 // print('finished results: $results');
                 onFinishResults = results;
@@ -263,20 +277,25 @@ void main() {
     expect(null, onNextPageNumber);
     expect(null, onNextResults);
 
-    final errorMessageFinder = find.text('Field can not be empty');
+    var errorMessageFinder = find.text('Field can not be empty');
 
     expect(errorMessageFinder, findsOneWidget);
 
     await tester.enterText(
-        find.widgetWithText(TextFormField, 'Field1Label'), 'Field1Input');
+      find.widgetWithText(TextFormField, 'Field1Label'),
+      'Field1Input',
+    );
     await tester.tap(find.widgetWithText(ElevatedButton, 'finish'));
     await tester.pumpAndSettle();
 
     expect(0, onNextPageNumber);
     expect({'Field1': 'Field1Input'}, onNextResults);
 
-    expect({
+    expect(
-      0: {'Field1': 'Field1Input'},
+      {
-    }, onFinishResults);
+        0: {'Field1': 'Field1Input'},
+      },
+      onFinishResults,
+    );
   });
 }