Merge pull request #31 from Iconica-Development/feature/default_style

feat: default styling

.github/workflows/component-documentation.yml

@@ -0,0 +1,14 @@
+name: Iconica Standard Component Documentation Workflow
+# Workflow Caller version: 1.0.0
+
+on:
+  release:
+    types: [published]
+
+  workflow_dispatch:
+
+jobs:
+  call-iconica-component-documentation-workflow:
+    uses: Iconica-Development/.github/.github/workflows/component-documentation.yml@master
+    secrets: inherit
+    permissions: write-all

.gitignore

@@ -34,3 +34,8 @@ migrate_working_dir/
 build/
 .flutter-plugins
 .flutter-plugins-dependencies
+.metadata
+
+# FVM Version Cache
+.fvm/
+.fvmrc

CHANGELOG.md

@@ -3,6 +3,46 @@ SPDX-FileCopyrightText: 2022 Iconica
 
 SPDX-License-Identifier: GPL-3.0-or-later
 -->
+# 3.0.0
+- fix: fixed the issue with the scrollController when the `pageToReturnTo` is null.
+- feat: Added default styling and theme.
+- feat: Added Iconica linter.
+# 2.0.4
+- feat: added maxFormWidth to AuthScreen
+
+# 2.0.3
+- feat: added default registrationOptions
+
+# 2.0.2
+- fix: fixed the issue with values not being saved when calling nextStep.
+
+# 2.0.1
+- feat: added circular progress indicator while awaiting registration of user
+- feat: added alignment option for buttons
+
+# 2.0.0
+- feat(buttons): Added the possiblity to only have a next button by return zero on the previous button builder
+- feat: exposed input decoration in AuthTextField
+- feat: added title widget and login button builder
+- feat(bool): Add a boolean field. Can be used for accepting terms and conditions
+- feat(pass): Add dedicated password screen that manages state internally 
+- fix: Small refactor and brought back the normal alignment for the screens
+- fix: Fixed alignment and spacing when opening keyboard
+- feat: add auth drop down field
+- fix: added step to button builders
+- fix: exported auth_pass_field
+- feat: added validation to disable next button
+- feat(auth-screen): add flexible spacing between fields
+- fix(keyboard-focus): add unfocus for onPrevious
+- fix: add empty and required constructors for the RegistrationTranslations
+
+# 1.2.0
+
+- feat: Added the ability to have an async register function so you can call it asynchronous. 
+
+# 1.1.0
+
+- feat: Added the ability to go to specific page on error
 
 # 1.0.0
 

analysis_options.yaml

@@ -1,4 +1,9 @@
-include: package:flutter_lints/flutter.yaml
+include: package:flutter_iconica_analysis/components_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:

bitbucket-pipelines.yml

@@ -1,48 +0,0 @@
-# SPDX-FileCopyrightText: 2022 Iconica
-#
-# SPDX-License-Identifier: GPL-3.0-or-later
-
-image: cirrusci/flutter
-
-pipelines:
-  pull-requests:
-    feature/*:
-      - step:
-         caches:
-          - gradle
-          - gradlewrapper
-          - flutter
-         name: Run analyzer & test
-         script:
-          - flutter pub get
-          - flutter format -o none --set-exit-if-changed .
-          - flutter analyze
-
-    develop:
-      - step:
-         caches:
-          - gradle
-          - gradlewrapper
-          - flutter
-         name: Run analyzer & test
-         script:
-          - flutter pub get
-          - flutter format -o none --set-exit-if-changed .
-          - flutter analyze
-
-    hotfix/*:
-      - step:
-         caches:
-          - gradle
-          - gradlewrapper
-          - flutter
-         name: Run analyzer & test
-         script:
-          - flutter pub get
-          - flutter format -o none --set-exit-if-changed .
-          - flutter analyze
-
-definitions:
-  caches:
-    gradlewrapper: ~/.gradle/wrapper
-    flutter: ~/.pub-cache

example/android/build.gradle

@@ -26,6 +26,6 @@ subprojects {
     project.evaluationDependsOn(':app')
 }
 
-task clean(type: Delete) {
+tasks.register("clean", Delete) {
     delete rootProject.buildDir
 }

example/lib/main.dart

@@ -2,27 +2,81 @@
 //
 // SPDX-License-Identifier: BSD-3-Clause
 
+import 'package:flutter/gestures.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_registration/flutter_registration.dart';
 import 'example_registration_repository.dart';
 
 void main() {
   runApp(
-    const MaterialApp(
+    MaterialApp(
-      home: FlutterRegistrationDemo(),
+      theme: ThemeData(
+        inputDecorationTheme: const InputDecorationTheme(
+          errorStyle: TextStyle(color: Colors.red),
+        ),
+      ),
+      home: const FlutterRegistrationDemo(),
     ),
   );
 }
 
-class FlutterRegistrationDemo extends StatelessWidget {
+class FlutterRegistrationDemo extends StatefulWidget {
-  const FlutterRegistrationDemo({Key? key}) : super(key: key);
+  const FlutterRegistrationDemo({super.key});
+
+  @override
+  State<FlutterRegistrationDemo> createState() =>
+      _FlutterRegistrationDemoState();
+}
+
+class _FlutterRegistrationDemoState extends State<FlutterRegistrationDemo> {
+  late List<AuthStep> steps;
+
+  @override
+  void initState() {
+    super.initState();
+
+    steps = RegistrationOptions.getDefaultSteps();
+
+    steps[1].fields.add(
+          AuthBoolField(
+            name: 'termsConditions',
+            widgetType: BoolWidgetType.checkbox,
+            validators: [
+              (value) {
+                if (value == null || !value) {
+                  return 'Required';
+                }
+
+                return null;
+              },
+            ],
+            rightWidget: Text.rich(
+              TextSpan(
+                text: 'I agree with the ',
+                children: <TextSpan>[
+                  TextSpan(
+                    text: 'terms & conditions',
+                    style: const TextStyle(
+                      decoration: TextDecoration.underline,
+                    ),
+                    recognizer: TapGestureRecognizer()
+                      ..onTap = () {
+                        debugPrint('Open terms and conditions');
+                      },
+                  ),
+                ],
+              ),
+            ),
+          ),
+        );
+  }
 
   @override
   Widget build(BuildContext context) {
     return RegistrationScreen(
       registrationOptions: RegistrationOptions(
         registrationRepository: ExampleRegistrationRepository(),
-        registrationSteps: RegistrationOptions.getDefaultSteps(),
+        registrationSteps: steps,
         afterRegistration: () {
           debugPrint('Registered!');
         },
@@ -32,8 +86,7 @@ class FlutterRegistrationDemo extends StatelessWidget {
 }
 
 class ProtectedScreen extends StatelessWidget {
-  const ProtectedScreen({Key? key}) : super(key: key);
+  const ProtectedScreen({super.key});
-
   @override
   Widget build(BuildContext context) {
     return const Scaffold(

example/pubspec.lock

@@ -37,18 +37,18 @@ packages:
     dependency: transitive
     description:
       name: collection
-      sha256: f092b211a4319e98e5ff58223576de6c2803db36221657b46c82574721240687
+      sha256: ee67cb0715911d28db6bf4af1026078bd6f0128b07a5f66fb2ed94ec6783c09a
       url: "https://pub.dev"
     source: hosted
-    version: "1.17.2"
+    version: "1.18.0"
   cupertino_icons:
     dependency: "direct main"
     description:
       name: cupertino_icons
-      sha256: e35129dc44c9118cee2a5603506d823bab99c68393879edb440e0090d07586be
+      sha256: d57953e10f9f8327ce64a508a355f0b1ec902193f66288e8cb5070e7c47eeb2d
       url: "https://pub.dev"
     source: hosted
-    version: "1.0.5"
+    version: "1.0.6"
   fake_async:
     dependency: transitive
     description:
@@ -62,14 +62,22 @@ packages:
     description: flutter
     source: sdk
     version: "0.0.0"
+  flutter_input_library:
+    dependency: transitive
+    description:
+      name: flutter_input_library
+      sha256: db8d9d57c31f166ed7c4ec3d060d18891533c57877a30c6c2668231efa1a44f8
+      url: "https://forgejo.internal.iconica.nl/api/packages/internal/pub/"
+    source: hosted
+    version: "3.6.0"
   flutter_lints:
     dependency: "direct dev"
     description:
       name: flutter_lints
-      sha256: aeb0b80a8b3709709c9cc496cdc027c5b3216796bc0af0ce1007eaf24464fd4c
+      sha256: a25a15ebbdfc33ab1cd26c63a6ee519df92338a9c10f122adda92938253bef04
       url: "https://pub.dev"
     source: hosted
-    version: "2.0.1"
+    version: "2.0.3"
   flutter_localizations:
     dependency: transitive
     description: flutter
@@ -81,7 +89,7 @@ packages:
       path: ".."
       relative: true
     source: path
-    version: "0.5.0"
+    version: "2.0.4"
   flutter_test:
     dependency: "direct dev"
     description: flutter
@@ -91,50 +99,74 @@ packages:
     dependency: transitive
     description:
       name: intl
-      sha256: "3bc132a9dbce73a7e4a21a17d06e1878839ffbf975568bc875c60537824b0c4d"
+      sha256: d6f56758b7d3014a48af9701c085700aac781a92a87a62b1333b46d8879661cf
       url: "https://pub.dev"
     source: hosted
-    version: "0.18.1"
+    version: "0.19.0"
+  leak_tracker:
+    dependency: transitive
+    description:
+      name: leak_tracker
+      sha256: "7f0df31977cb2c0b88585095d168e689669a2cc9b97c309665e3386f3e9d341a"
+      url: "https://pub.dev"
+    source: hosted
+    version: "10.0.4"
+  leak_tracker_flutter_testing:
+    dependency: transitive
+    description:
+      name: leak_tracker_flutter_testing
+      sha256: "06e98f569d004c1315b991ded39924b21af84cf14cc94791b8aea337d25b57f8"
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.0.3"
+  leak_tracker_testing:
+    dependency: transitive
+    description:
+      name: leak_tracker_testing
+      sha256: "6ba465d5d76e67ddf503e1161d1f4a6bc42306f9d66ca1e8f079a47290fb06d3"
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.0.1"
   lints:
     dependency: transitive
     description:
       name: lints
-      sha256: "5cfd6509652ff5e7fe149b6df4859e687fca9048437857cb2e65c8d780f396e3"
+      sha256: "0a217c6c989d21039f1498c3ed9f3ed71b354e69873f13a8dfc3c9fe76f1b452"
       url: "https://pub.dev"
     source: hosted
-    version: "2.0.0"
+    version: "2.1.1"
   matcher:
     dependency: transitive
     description:
       name: matcher
-      sha256: "1803e76e6653768d64ed8ff2e1e67bea3ad4b923eb5c56a295c3e634bad5960e"
+      sha256: d2323aa2060500f906aa31a895b4030b6da3ebdcc5619d14ce1aada65cd161cb
       url: "https://pub.dev"
     source: hosted
-    version: "0.12.16"
+    version: "0.12.16+1"
   material_color_utilities:
     dependency: transitive
     description:
       name: material_color_utilities
-      sha256: "9528f2f296073ff54cb9fee677df673ace1218163c3bc7628093e7eed5203d41"
+      sha256: "0e0a020085b65b6083975e499759762399b4475f766c21668c4ecca34ea74e5a"
       url: "https://pub.dev"
     source: hosted
-    version: "0.5.0"
+    version: "0.8.0"
   meta:
     dependency: transitive
     description:
       name: meta
-      sha256: "3c74dbf8763d36539f114c799d8a2d87343b5067e9d796ca22b5eb8437090ee3"
+      sha256: "7687075e408b093f36e6bbf6c91878cc0d4cd10f409506f7bc996f68220b9136"
       url: "https://pub.dev"
     source: hosted
-    version: "1.9.1"
+    version: "1.12.0"
   path:
     dependency: transitive
     description:
       name: path
-      sha256: "8829d8a55c13fc0e37127c29fedf290c102f4e40ae94ada574091fe0ff96c917"
+      sha256: "087ce49c3f0dc39180befefc60fdb4acd8f8620e5682fe2476afd0b3688bb4af"
       url: "https://pub.dev"
     source: hosted
-    version: "1.8.3"
+    version: "1.9.0"
   sky_engine:
     dependency: transitive
     description: flutter
@@ -152,18 +184,18 @@ packages:
     dependency: transitive
     description:
       name: stack_trace
-      sha256: c3c7d8edb15bee7f0f74debd4b9c5f3c2ea86766fe4178eb2a18eb30a0bdaed5
+      sha256: "73713990125a6d93122541237550ee3352a2d84baad52d375a4cad2eb9b7ce0b"
       url: "https://pub.dev"
     source: hosted
-    version: "1.11.0"
+    version: "1.11.1"
   stream_channel:
     dependency: transitive
     description:
       name: stream_channel
-      sha256: "83615bee9045c1d322bbbd1ba209b7a749c2cbcdcb3fdd1df8eb488b3279c1c8"
+      sha256: ba2aa5d8cc609d96bbb2899c28934f9e1af5cddbd60a827822ea467161eb54e7
       url: "https://pub.dev"
     source: hosted
-    version: "2.1.1"
+    version: "2.1.2"
   string_scanner:
     dependency: transitive
     description:
@@ -184,10 +216,10 @@ packages:
     dependency: transitive
     description:
       name: test_api
-      sha256: "75760ffd7786fffdfb9597c35c5b27eaeec82be8edfb6d71d32651128ed7aab8"
+      sha256: "9955ae474176f7ac8ee4e989dadfb411a58c30415bcfb648fa04b2b8a03afa7f"
       url: "https://pub.dev"
     source: hosted
-    version: "0.6.0"
+    version: "0.7.0"
   vector_math:
     dependency: transitive
     description:
@@ -196,14 +228,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "2.1.4"
-  web:
+  vm_service:
     dependency: transitive
     description:
-      name: web
+      name: vm_service
-      sha256: dc8ccd225a2005c1be616fe02951e2e342092edf968cf0844220383757ef8f10
+      sha256: "3923c89304b715fb1eb6423f017651664a03bf5f4b29983627c4da791f74a4ec"
       url: "https://pub.dev"
     source: hosted
-    version: "0.1.4-beta"
+    version: "14.2.1"
 sdks:
-  dart: ">=3.1.0-185.0.dev <4.0.0"
+  dart: ">=3.3.0 <4.0.0"
-  flutter: ">=1.17.0"
+  flutter: ">=3.18.0-18.0.pre.54"

lib/flutter_registration.dart

@@ -1,14 +1,21 @@
 // SPDX-FileCopyrightText: 2022 Iconica
 //
 // SPDX-License-Identifier: BSD-3-Clause
-
+/// Flutter registration component that provides a registration
+/// screen with multiple registration steps.
 library flutter_registration;
 
-export 'src/config/registration_options.dart';
+export "package:flutter_input_library/flutter_input_library.dart"
-export 'src/config/registration_translations.dart';
+    show BoolWidgetType;
-export 'src/model/auth_exception.dart';
+
-export 'src/model/auth_field.dart';
+export "src/config/registration_options.dart";
-export 'src/model/auth_step.dart';
+export "src/config/registration_translations.dart";
-export 'src/model/auth_text_field.dart';
+export "src/model/auth_bool_field.dart";
-export 'src/registration_screen.dart';
+export "src/model/auth_drop_down.dart";
-export 'src/service/registration_repository.dart';
+export "src/model/auth_exception.dart";
+export "src/model/auth_field.dart";
+export "src/model/auth_pass_field.dart";
+export "src/model/auth_step.dart";
+export "src/model/auth_text_field.dart";
+export "src/registration_screen.dart";
+export "src/service/registration_repository.dart";

lib/src/auth_screen.dart

@@ -2,63 +2,171 @@
 //
 // SPDX-License-Identifier: BSD-3-Clause
 
-import 'dart:collection';
+import "dart:async";
-import 'package:flutter/material.dart';
+import "dart:collection";
-import 'package:flutter_registration/flutter_registration.dart';
+import "package:flutter/material.dart";
+import "package:flutter_registration/flutter_registration.dart";
 
+/// A widget for handling multi-step authentication processes.
 class AuthScreen extends StatefulWidget {
+  /// Constructs an [AuthScreen] object.
+  ///
+  /// [appBarTitle] specifies the title of the app bar.
+  ///
+  /// [onFinish] is a function called upon
+  /// completion of the authentication process.
+  ///
+  /// [steps] is a list of authentication steps to be completed.
+  ///
+  /// [submitBtnTitle] specifies the title of the submit button.
+  ///
+  /// [nextBtnTitle] specifies the title of the next button.
+  ///
+  /// [previousBtnTitle] specifies the title of the previous button.
+  ///
+  /// [customAppBar] allows customization of the app bar.
+  ///
+  /// [buttonMainAxisAlignment] specifies the alignment of the buttons.
+  ///
+  /// [customBackgroundColor] allows customization of the background color.
+  ///
+  /// [nextButtonBuilder] allows customization of the next button.
+  ///
+  /// [previousButtonBuilder] allows customization of the previous button.
+  ///
+  /// [titleWidget] specifies a custom widget
+  /// to be displayed at the top of the screen.
+  ///
+  /// [loginButton] specifies a custom login button widget.
+  ///
+  /// [titleFlex] specifies the flex value for the title widget.
+  ///
+  /// [formFlex] specifies the flex value for the form widget.
+  ///
+  /// [beforeTitleFlex] specifies the flex value before the title widget.
+  ///
+  /// [afterTitleFlex] specifies the flex value after the title widget.
+
   const AuthScreen({
-    required this.title,
+    required this.appBarTitle,
     required this.steps,
     required this.submitBtnTitle,
     required this.nextBtnTitle,
     required this.previousBtnTitle,
     required this.onFinish,
     this.customAppBar,
+    this.buttonMainAxisAlignment,
     this.customBackgroundColor,
     this.nextButtonBuilder,
     this.previousButtonBuilder,
+    this.titleWidget,
+    this.loginButton,
+    this.titleFlex,
+    this.formFlex,
+    this.beforeTitleFlex,
+    this.afterTitleFlex,
+    this.maxFormWidth,
     super.key,
-  }) : assert(steps.length > 0, 'At least one step is required');
+  }) : assert(steps.length > 0, "At least one step is required");
 
-  final String title;
+  /// The title of the app bar.
-  final Function({
+  final String appBarTitle;
-    required HashMap<String, String> values,
+
-    required VoidCallback onError,
+  /// A function called upon completion of the authentication process.
+  final Future<void> Function({
+    required HashMap<String, dynamic> values,
+    required void Function(int? pageToReturn) onError,
   }) onFinish;
+
+  /// The authentication steps to be completed.
   final List<AuthStep> steps;
+
+  /// The title of the submit button.
   final String submitBtnTitle;
+
+  /// The title of the next button.
   final String nextBtnTitle;
+
+  /// The title of the previous button.
   final String previousBtnTitle;
+
+  /// A custom app bar widget.
   final AppBar? customAppBar;
+
+  /// The alignment of the buttons.
+  final MainAxisAlignment? buttonMainAxisAlignment;
+
+  /// The background color of the screen.
   final Color? customBackgroundColor;
-  final Widget Function(VoidCallback, String)? nextButtonBuilder;
+
-  final Widget Function(VoidCallback, String)? previousButtonBuilder;
+  /// A custom widget for the button.
+  final Widget Function(
+    Future<void> Function()? onPressed,
+    String label,
+    int step,
+    // ignore: avoid_positional_boolean_parameters
+    bool enabled,
+  )? nextButtonBuilder;
+
+  /// A custom widget for the button.
+  final Widget? Function(VoidCallback onPressed, String label, int step)?
+      previousButtonBuilder;
+
+  /// A custom widget for the title.
+  final Widget? titleWidget;
+
+  /// A custom widget for the login button.
+  final Widget? loginButton;
+
+  /// The flex value for the title widget.
+  final int? titleFlex;
+
+  /// The flex value for the form widget.
+  final int? formFlex;
+
+  /// The flex value before the title widget.
+  final int? beforeTitleFlex;
+
+  /// The flex value after the title widget.
+  final int? afterTitleFlex;
+
+  /// The maximum width of the form.
+  final double? maxFormWidth;
 
   @override
   State<AuthScreen> createState() => _AuthScreenState();
 }
 
+/// The state for [AuthScreen].
 class _AuthScreenState extends State<AuthScreen> {
   final _formKey = GlobalKey<FormState>();
   final _pageController = PageController();
   final _animationDuration = const Duration(milliseconds: 300);
   final _animationCurve = Curves.ease;
+  bool _formValid = false;
 
+  /// Gets the app bar.
   AppBar get _appBar =>
       widget.customAppBar ??
       AppBar(
-        title: Text(widget.title),
+        backgroundColor: const Color(0xffFAF9F6),
+        title: Text(widget.appBarTitle),
       );
 
+  /// Handles previous button press.
   void onPrevious() {
-    _pageController.previousPage(
+    FocusScope.of(context).unfocus();
-      duration: _animationDuration,
+    _validate(_pageController.page!.toInt() - 1);
-      curve: _animationCurve,
+    unawaited(
+      _pageController.previousPage(
+        duration: _animationDuration,
+        curve: _animationCurve,
+      ),
     );
   }
 
-  void onNext(AuthStep step) {
+  /// Handles next button press.
+  Future<void> onNext(AuthStep step) async {
     if (!_formKey.currentState!.validate()) {
       return;
     }
@@ -68,141 +176,246 @@ class _AuthScreenState extends State<AuthScreen> {
     FocusScope.of(context).unfocus();
 
     if (widget.steps.last == step) {
-      var values = HashMap<String, String>();
+      var values = HashMap<String, dynamic>();
 
       for (var step in widget.steps) {
         for (var field in step.fields) {
-          values[field.name] =
+          values[field.name] = field.value;
-              (field as AuthTextField).textController.value.text;
         }
       }
 
-      widget.onFinish(
+      await widget.onFinish(
         values: values,
-        onError: () => _pageController.animateToPage(
+        onError: (int? pageToReturn) {
-          0,
+          if (pageToReturn == null) {
-          duration: _animationDuration,
+            return;
-          curve: _animationCurve,
+          }
-        ),
+          _pageController.animateToPage(
+            pageToReturn,
+            duration: _animationDuration,
+            curve: _animationCurve,
+          );
+        },
       );
 
       return;
     } else {
-      _pageController.nextPage(
+      _validate(_pageController.page!.toInt() + 1);
-        duration: _animationDuration,
+      unawaited(
-        curve: _animationCurve,
+        _pageController.nextPage(
+          duration: _animationDuration,
+          curve: _animationCurve,
+        ),
       );
     }
   }
 
+  /// Validates the current step.
+  void _validate(int currentPage) {
+    var isStepValid = true;
+
+    // Loop through each field in the current step
+    for (var field in widget.steps[currentPage].fields) {
+      for (var validator in field.validators) {
+        var validationResult = validator(field.value);
+        if (validationResult != null) {
+          // If any validator returns an error, mark step as invalid and break
+          isStepValid = false;
+          break;
+        }
+      }
+      if (!isStepValid) {
+        break; // No need to check further fields if one is already invalid
+      }
+    }
+
+    setState(() {
+      _formValid = isStepValid;
+    });
+  }
+
   @override
   Widget build(BuildContext context) {
+    var theme = Theme.of(context);
     return Scaffold(
-      backgroundColor: widget.customBackgroundColor ?? Colors.white,
+      backgroundColor: widget.customBackgroundColor ?? const Color(0xffFAF9F6),
       appBar: _appBar,
-      body: Form(
+      body: SafeArea(
-        key: _formKey,
+        child: Form(
-        child: PageView(
+          key: _formKey,
-          physics: const NeverScrollableScrollPhysics(),
+          child: PageView(
-          controller: _pageController,
+            physics: const NeverScrollableScrollPhysics(),
-          children: <Widget>[
+            controller: _pageController,
-            for (AuthStep step in widget.steps)
+            children: <Widget>[
-              Column(
+              for (var currentStep = 0;
-                mainAxisAlignment: MainAxisAlignment.spaceBetween,
+                  currentStep < widget.steps.length;
-                children: [
+                  currentStep++)
-                  Flexible(
+                Column(
-                    child: Center(
+                  mainAxisSize: MainAxisSize.min,
-                      child: ListView(
+                  mainAxisAlignment: MainAxisAlignment.spaceBetween,
-                        physics: const ClampingScrollPhysics(),
+                  children: [
-                        shrinkWrap: true,
+                    if (widget.titleWidget != null) ...[
-                        padding: const EdgeInsets.symmetric(
+                      Expanded(
-                          vertical: 8.0,
+                        flex: widget.titleFlex ?? 1,
-                          horizontal: 30.0,
+                        child: Column(
+                          mainAxisAlignment: MainAxisAlignment.start,
+                          mainAxisSize: MainAxisSize.min,
+                          children: [
+                            Expanded(
+                              flex: widget.beforeTitleFlex ?? 2,
+                              child: Container(),
+                            ),
+                            widget.titleWidget!,
+                            Expanded(
+                              flex: widget.afterTitleFlex ?? 2,
+                              child: Container(),
+                            ),
+                          ],
                         ),
-                        children: [
+                      ),
-                          for (AuthField field in step.fields)
+                    ],
-                            Align(
+                    Expanded(
-                              child: Column(
+                      flex: widget.formFlex ?? 3,
-                                crossAxisAlignment: CrossAxisAlignment.start,
+                      child: Align(
-                                children: [
+                        alignment: Alignment.topCenter,
-                                  if (field.title != null) ...[
+                        child: ConstrainedBox(
-                                    field.title!,
+                          constraints: BoxConstraints(
-                                  ],
+                            maxWidth: widget.maxFormWidth ?? 300,
-                                  field.build(),
+                          ),
+                          child: Column(
+                            children: [
+                              for (AuthField field
+                                  in widget.steps[currentStep].fields) ...[
+                                if (field.title != null) ...[
+                                  wrapWithDefaultStyle(
+                                    style: theme.textTheme.headlineLarge!,
+                                    widget: field.title!,
+                                  ),
                                 ],
-                              ),
+                                field.build(context, () {
-                            )
+                                  _validate(currentStep);
-                        ],
+                                }),
+                              ],
+                            ],
+                          ),
+                        ),
                       ),
                     ),
-                  ),
+                    Column(
-                  Padding(
-                    padding: const EdgeInsets.only(
-                      top: 15.0,
-                      bottom: 30.0,
-                      left: 30.0,
-                      right: 30.0,
-                    ),
-                    child: Row(
-                      mainAxisAlignment: widget.steps.first != step
-                          ? MainAxisAlignment.spaceBetween
-                          : MainAxisAlignment.end,
                       children: [
-                        if (widget.steps.first != step)
+                        SizedBox(
-                          widget.previousButtonBuilder?.call(
+                          width: MediaQuery.of(context).size.width,
-                                onPrevious,
+                          child: Padding(
-                                widget.previousBtnTitle,
+                            padding: const EdgeInsets.symmetric(
-                              ) ??
+                              horizontal: 20,
-                              ElevatedButton(
+                            ),
-                                onPressed: onPrevious,
+                            child: Row(
-                                child: Row(
+                              mainAxisAlignment: widget.steps.first !=
-                                  children: [
+                                      widget.steps[currentStep]
-                                    const Icon(
+                                  ? MainAxisAlignment.spaceBetween
-                                      Icons.arrow_back,
+                                  : MainAxisAlignment.end,
-                                      size: 18,
+                              children: [
-                                    ),
+                                if (widget.steps.first !=
-                                    Padding(
+                                    widget.steps[currentStep]) ...[
-                                      padding: const EdgeInsets.only(left: 4.0),
+                                  widget.previousButtonBuilder?.call(
-                                      child: Text(widget.previousBtnTitle),
+                                        onPrevious,
-                                    ),
+                                        widget.previousBtnTitle,
-                                  ],
+                                        currentStep,
-                                ),
+                                      ) ??
-                              ),
+                                      _stepButton(
-                        widget.nextButtonBuilder?.call(
+                                        buttonText: widget.previousBtnTitle,
-                              () => onNext(step),
+                                        onTap: () async => onPrevious(),
-                              widget.steps.last == step
+                                      ),
-                                  ? widget.submitBtnTitle
+                                  const SizedBox(
-                                  : widget.nextBtnTitle,
+                                    width: 8,
-                            ) ??
-                            ElevatedButton(
-                              onPressed: () {
-                                onNext(step);
-                              },
-                              child: Row(
-                                children: [
-                                  Text(
-                                    widget.steps.last == step
-                                        ? widget.submitBtnTitle
-                                        : widget.nextBtnTitle,
-                                  ),
-                                  const Padding(
-                                    padding: EdgeInsets.only(left: 4.0),
-                                    child: Icon(
-                                      Icons.arrow_forward,
-                                      size: 18,
-                                    ),
                                   ),
                                 ],
-                              ),
+                                widget.nextButtonBuilder?.call(
+                                      !_formValid
+                                          ? null
+                                          : () async {
+                                              await onNext(
+                                                widget.steps[currentStep],
+                                              );
+                                            },
+                                      widget.steps.last ==
+                                              widget.steps[currentStep]
+                                          ? widget.submitBtnTitle
+                                          : widget.nextBtnTitle,
+                                      currentStep,
+                                      _formValid,
+                                    ) ??
+                                    _stepButton(
+                                      buttonText: widget.steps.last ==
+                                              widget.steps[currentStep]
+                                          ? widget.submitBtnTitle
+                                          : widget.nextBtnTitle,
+                                      onTap: () async {
+                                        await onNext(
+                                          widget.steps[currentStep],
+                                        );
+                                      },
+                                    ),
+                              ],
                             ),
+                          ),
+                        ),
+                        const SizedBox(
+                          height: 8,
+                        ),
+                        if (widget.loginButton != null)
+                          Padding(
+                            padding: const EdgeInsets.only(top: 20.0),
+                            child: widget.loginButton,
+                          ),
                       ],
                     ),
-                  )
+                  ],
-                ],
+                ),
-              ),
+            ],
-          ],
+          ),
         ),
       ),
     );
   }
+
+  Widget _stepButton({
+    required String buttonText,
+    required Future Function()? onTap,
+  }) {
+    var theme = Theme.of(context);
+    return Flexible(
+      child: InkWell(
+        onTap: onTap,
+        child: Container(
+          width: double.infinity,
+          constraints: const BoxConstraints(
+            maxWidth: 180,
+          ),
+          decoration: BoxDecoration(
+            borderRadius: BorderRadius.circular(20),
+            border: Border.all(
+              color: const Color(
+                0xff979797,
+              ),
+            ),
+          ),
+          child: Padding(
+            padding: const EdgeInsets.all(4),
+            child: Text(
+              buttonText,
+              style: theme.textTheme.bodyMedium,
+              textAlign: TextAlign.center,
+            ),
+          ),
+        ),
+      ),
+    );
+  }
+
+  Widget wrapWithDefaultStyle({
+    required Widget widget,
+    required TextStyle style,
+  }) =>
+      DefaultTextStyle(style: style, child: widget);
 }

lib/src/config/example_registration_repository.dart

@@ -0,0 +1,12 @@
+import "dart:collection";
+import "package:flutter/material.dart";
+import "package:flutter_registration/flutter_registration.dart";
+
+/// A registration repository that does nothing.
+class ExampleRegistrationRepository with RegistrationRepository {
+  @override
+  Future<String?> register(HashMap values) {
+    debugPrint("register $values");
+    return Future.value(null);
+  }
+}

lib/src/config/registration_options.dart

@@ -2,167 +2,227 @@
 //
 // SPDX-License-Identifier: BSD-3-Clause
 
-import 'package:flutter/material.dart';
+import "dart:async";
-import 'package:flutter_registration/flutter_registration.dart';
 
+import "package:flutter/material.dart";
+import "package:flutter_registration/flutter_registration.dart";
+import "package:flutter_registration/src/config/example_registration_repository.dart";
+
+/// A set of options for configuring the
+/// registration process in a Flutter application.
 class RegistrationOptions {
+  /// Registration options Constructor
   RegistrationOptions({
-    required this.registrationRepository,
-    required this.registrationSteps,
     required this.afterRegistration,
-    this.registrationTranslations = const RegistrationTranslations(),
+    this.registrationRepository,
+    this.registrationSteps,
+    this.titleFlex,
+    this.formFlex,
+    this.beforeTitleFlex,
+    this.afterTitleFlex,
+    this.registrationTranslations = const RegistrationTranslations.empty(),
     this.onError,
-    this.customAppbarBuilder,
+    this.customAppbarBuilder = _createCustomAppBar,
     this.nextButtonBuilder,
     this.previousButtonBuilder,
+    this.buttonMainAxisAlignment,
     this.backgroundColor,
-  });
+    this.titleWidget,
+    this.loginButton,
+    this.maxFormWidth,
+    this.beforeRegistration,
+  }) {
+    if (registrationSteps == null || registrationSteps!.isEmpty) {
+      steps = RegistrationOptions.getDefaultSteps();
+    } else {
+      steps = registrationSteps!;
+    }
+    registrationRepository ??= ExampleRegistrationRepository();
+  }
 
+  /// Translations for registration-related messages and prompts.
   final RegistrationTranslations registrationTranslations;
-  final List<AuthStep> registrationSteps;
+
-  final void Function(String error)? onError;
+  /// The steps involved in the registration process.
+  final List<AuthStep>? registrationSteps;
+
+  /// The steps involved in the registration process.
+  List<AuthStep> steps = [];
+
+  /// A function that handles errors during registration.
+  final int? Function(String error)? onError;
+
+  /// A callback function executed after successful registration.
   final VoidCallback afterRegistration;
-  final RegistrationRepository registrationRepository;
+
+  /// The repository responsible for registration.
+  RegistrationRepository? registrationRepository;
+
+  /// A function for customizing the app bar displayed during registration.
   final AppBar Function(String title)? customAppbarBuilder;
-  final Widget Function(VoidCallback onPressed, String label)?
+
-      nextButtonBuilder;
+  /// A function for customizing the "Next" button.
-  final Widget Function(VoidCallback onPressed, String label)?
+  final Widget Function(
+    Future<void> Function()? onPressed,
+    String label,
+    int step,
+    // ignore: avoid_positional_boolean_parameters
+    bool enabled,
+  )? nextButtonBuilder;
+
+  /// A function for customizing the "Previous" button.
+  final Widget? Function(VoidCallback onPressed, String label, int step)?
       previousButtonBuilder;
+
+  /// Specifies the alignment of buttons.
+  final MainAxisAlignment? buttonMainAxisAlignment;
+
+  /// The background color of the registration screen.
   final Color? backgroundColor;
 
+  /// A custom widget for displaying the registration title.
+  final Widget? titleWidget;
+
+  /// A custom widget for displaying a login button.
+  final Widget? loginButton;
+
+  /// The number of flex units for the title.
+  final int? titleFlex;
+
+  /// The number of flex units for the form.
+  final int? formFlex;
+
+  /// The number of flex units for the buttons.
+  final int? beforeTitleFlex;
+
+  /// The number of flex units for the buttons.
+  final int? afterTitleFlex;
+
+  /// The maximum width of the form. Defaults to 300.
+  final double? maxFormWidth;
+
+  /// This function gets called before the user gets registered.
+  final Future<void> Function()? beforeRegistration;
+
+  /// Generates default registration steps.
+  ///
+  /// [emailController] controller for email input.
+  ///
+  /// [pass1Controller] controller for first password input.
+  ///
+  /// [pass1Hidden] whether the first password field is initially hidden.
+  ///
+  /// [pass2Controller] controller for second password input.
+  ///
+  /// [pass2Hidden] whether the second password field is initially hidden.
+  ///
+  /// [passHideOnChange] function triggered when password visibility changes.
+  ///
+  /// [translations] translations for default registration messages and prompts.
+  ///
+  /// [titleBuilder] function for customizing step titles.
+  ///
+  /// [labelBuilder] function for customizing field labels.
+  ///
+  /// [textStyle] text style for input fields.
+  ///
+  /// [initialEmail] initial value for email input.
   static List<AuthStep> getDefaultSteps({
     TextEditingController? emailController,
-    TextEditingController? pass1Controller,
+    TextEditingController? passController,
-    bool pass1Hidden = true,
+    bool passHidden = true,
-    TextEditingController? pass2Controller,
+    // ignore: avoid_positional_boolean_parameters
-    bool pass2Hidden = true,
     Function(bool mainPass, bool value)? passHideOnChange,
-    RegistrationTranslations translations = const RegistrationTranslations(),
+    RegistrationTranslations translations =
+        const RegistrationTranslations.empty(),
     Function(String title)? titleBuilder,
     Function(String label)? labelBuilder,
     TextStyle? textStyle,
+    TextStyle? hintStyle,
     String? initialEmail,
-  }) {
+  }) =>
-    var password1 = '';
+      [
-
+        AuthStep(
-    return [
+          fields: [
-      AuthStep(
+            AuthTextField(
-        fields: [
+              name: "email",
-          AuthTextField(
+              textEditingController: emailController,
-            name: 'email',
+              value: initialEmail ?? "",
-            textEditingController: emailController,
+              title: titleBuilder?.call(translations.defaultEmailTitle) ??
-            value: initialEmail ?? '',
+                  Padding(
-            title: titleBuilder?.call(
+                    padding: const EdgeInsets.only(top: 180),
-                  translations.defaultEmailTitle,
+                    child: Text(
-                ) ??
+                      translations.defaultEmailTitle,
-                Padding(
-                  padding: const EdgeInsets.only(
-                    top: 24.0,
-                    bottom: 12.0,
-                  ),
-                  child: Text(
-                    translations.defaultEmailTitle,
-                    style: const TextStyle(
-                      fontWeight: FontWeight.bold,
                     ),
                   ),
-                ),
+              textInputType: TextInputType.emailAddress,
-            label: labelBuilder?.call(translations.defaultEmailLabel),
+              textFieldDecoration: InputDecoration(
-            hintText: translations.defaultEmailHint,
+                hintStyle: hintStyle,
-            textStyle: textStyle,
+                contentPadding: const EdgeInsets.symmetric(horizontal: 8),
-            validators: [
+                label: labelBuilder?.call(translations.defaultEmailLabel),
-              (email) => (email == null || email.isEmpty)
+                hintText: translations.defaultEmailHint,
-                  ? translations.defaultEmailEmpty
+                border: const OutlineInputBorder(),
-                  : null,
+                focusedBorder: const OutlineInputBorder(),
-              (email) =>
+              ),
-                  RegExp(r"""(?:[a-z0-9!#$%&'*+/=?^_`{|}~-]+(?:\.[a-z0-9!#$%&'*+/=?^_`{|}~-]+)*|"(?:[\x01-\x08\x0b\x0c\x0e-\x1f\x21\x23-\x5b\x5d-\x7f]|\\[\x01-\x09\x0b\x0c\x0e-\x7f])*")@(?:(?:[a-z0-9](?:[a-z0-9-]*[a-z0-9])?\.)+[a-z0-9](?:[a-z0-9-]*[a-z0-9])?|\[(?:(?:(2(5[0-5]|[0-4][0-9])|1[0-9][0-9]|[1-9]?[0-9]))\.){3}(?:(2(5[0-5]|[0-4][0-9])|1[0-9][0-9]|[1-9]?[0-9])|[a-z0-9-]*[a-z0-9]:(?:[\x01-\x08\x0b\x0c\x0e-\x1f\x21-\x5a\x53-\x7f]|\\[\x01-\x09\x0b\x0c\x0e-\x7f])+)\])""")
+              textStyle: textStyle,
-                          .hasMatch(email!)
+              padding: const EdgeInsets.symmetric(vertical: 20),
-                      ? null
+              validators: [
-                      : translations.defaultEmailValidatorMessage,
+                // ignore: avoid_dynamic_calls
-            ],
+                (email) => (email == null || email.isEmpty)
-          )
+                    ? translations.defaultEmailEmpty
-        ],
+                    : null,
-      ),
+                (email) =>
-      AuthStep(
+                    RegExp(r"""(?:[a-z0-9!#$%&'*+/=?^_`{|}~-]+(?:\.[a-z0-9!#$%&'*+/=?^_`{|}~-]+)*|"(?:[\x01-\x08\x0b\x0c\x0e-\x1f\x21\x23-\x5b\x5d-\x7f]|\\[\x01-\x09\x0b\x0c\x0e-\x7f])*")@(?:(?:[a-z0-9](?:[a-z0-9-]*[a-z0-9])?\.)+[a-z0-9](?:[a-z0-9-]*[a-z0-9])?|\[(?:(?:(2(5[0-5]|[0-4][0-9])|1[0-9][0-9]|[1-9]?[0-9]))\.){3}(?:(2(5[0-5]|[0-4][0-9])|1[0-9][0-9]|[1-9]?[0-9])|[a-z0-9-]*[a-z0-9]:(?:[\x01-\x08\x0b\x0c\x0e-\x1f\x21-\x5a\x53-\x7f]|\\[\x01-\x09\x0b\x0c\x0e-\x7f])+)\])""")
-        fields: [
+                            .hasMatch(email!)
-          AuthTextField(
+                        ? null
-            name: 'password1',
+                        : translations.defaultEmailValidatorMessage,
-            textEditingController: pass1Controller,
+              ],
-            title: titleBuilder?.call(
+            ),
-                  translations.defaultPassword1Title,
+          ],
-                ) ??
+        ),
-                Padding(
+        AuthStep(
-                  padding: const EdgeInsets.only(
+          fields: [
-                    top: 24.0,
+            AuthPassField(
-                    bottom: 12.0,
+              name: "password",
-                  ),
+              textEditingController: passController,
-                  child: Text(
+              title: titleBuilder?.call(translations.defaultPasswordTitle) ??
-                    translations.defaultPassword1Title,
+                  Padding(
-                    style: const TextStyle(
+                    padding: const EdgeInsets.only(top: 180),
-                      fontWeight: FontWeight.bold,
+                    child: Text(
+                      translations.defaultPasswordTitle,
                     ),
                   ),
-                ),
+              textFieldDecoration: InputDecoration(
-            label: labelBuilder?.call(translations.defaultPassword1Label),
+                hintStyle: hintStyle,
-            hintText: translations.defaultPassword1Hint,
+                contentPadding: const EdgeInsets.symmetric(horizontal: 8),
-            textStyle: textStyle,
+                label: labelBuilder?.call(translations.defaultPasswordLabel),
-            obscureText: true,
+                hintText: translations.defaultPasswordHint,
-            validators: [
+                border: const OutlineInputBorder(),
-              (value) => (value == null || value.isEmpty)
+                focusedBorder: const OutlineInputBorder(),
-                  ? translations.defaultPassword1ValidatorMessage
+              ),
-                  : null,
+              padding: const EdgeInsets.symmetric(vertical: 20),
-            ],
+              textStyle: textStyle,
-            onChange: (value) {
+              validators: [
-              password1 = value;
+                (value) {
-            },
+                  // ignore: avoid_dynamic_calls
-            hidden: pass1Hidden,
+                  if (value == null || value.isEmpty) {
-            onPassChanged: (value) {
+                    return translations.defaultPasswordValidatorMessage;
-              passHideOnChange?.call(true, value);
-            },
-          ),
-          AuthTextField(
-            name: 'password2',
-            textEditingController: pass2Controller,
-            title: titleBuilder?.call(
-                  translations.defaultPassword2Title,
-                ) ??
-                Padding(
-                  padding: const EdgeInsets.only(
-                    top: 24.0,
-                    bottom: 12.0,
-                  ),
-                  child: Text(
-                    translations.defaultPassword2Title,
-                    style: const TextStyle(
-                      fontWeight: FontWeight.bold,
-                    ),
-                  ),
-                ),
-            label: labelBuilder?.call(translations.defaultPassword2Label),
-            hintText: translations.defaultPassword2Hint,
-            textStyle: textStyle,
-            obscureText: true,
-            validators: [
-              (value) {
-                if (pass1Controller != null) {
-                  if (value != pass1Controller.value.text) {
-                    return translations.defaultPassword2ValidatorMessage;
                   }
-                } else {
+                  // ignore: avoid_dynamic_calls
-                  if (value != password1) {
+                  if (value.length < 6) {
-                    return translations.defaultPassword2ValidatorMessage;
+                    return translations.defaultPasswordToShortValidatorMessage;
                   }
-                }
+                  return null;
-                return null;
+                },
-              }
+              ],
-            ],
+            ),
-            hidden: pass2Hidden,
+          ],
-            onPassChanged: (value) {
+        ),
-              passHideOnChange?.call(false, value);
+      ];
-            },
-          ),
-        ],
-      ),
-    ];
-  }
 }
+
+AppBar _createCustomAppBar(String title) => AppBar(
+      iconTheme: const IconThemeData(color: Colors.black, size: 16),
+      title: Text(title),
+      backgroundColor: Colors.transparent,
+    );

lib/src/config/registration_translations.dart

@@ -2,44 +2,129 @@
 //
 // SPDX-License-Identifier: BSD-3-Clause
 
+/// Holds all the translations for the standard elements
+/// on the registration screen.
 class RegistrationTranslations {
+  /// Constructs a [RegistrationTranslations] object.
   const RegistrationTranslations({
-    this.title = 'Register',
+    required this.title,
-    this.registerBtn = 'Register',
+    required this.registerBtn,
-    this.previousStepBtn = 'Previous',
+    required this.previousStepBtn,
-    this.nextStepBtn = 'Next',
+    required this.nextStepBtn,
-    this.closeBtn = 'Close',
+    required this.closeBtn,
-    this.defaultEmailTitle = 'What is your email?',
+    required this.defaultEmailTitle,
-    this.defaultEmailLabel = '',
+    required this.defaultEmailLabel,
-    this.defaultEmailHint = 'john.doe@domain.com',
+    required this.defaultEmailHint,
-    this.defaultEmailEmpty = 'Enter your email',
+    required this.defaultEmailEmpty,
-    this.defaultEmailValidatorMessage = 'Enter a valid email address',
+    required this.defaultEmailValidatorMessage,
-    this.defaultPassword1Title = 'Enter a password',
+    required this.defaultPasswordTitle,
-    this.defaultPassword1Label = '',
+    required this.defaultPasswordLabel,
-    this.defaultPassword1Hint = '',
+    required this.defaultPasswordHint,
-    this.defaultPassword1ValidatorMessage = 'Enter a valid password',
+    required this.defaultPasswordValidatorMessage,
-    this.defaultPassword2Title = 'Re-enter password',
+    required this.defaultPasswordToShortValidatorMessage,
-    this.defaultPassword2Label = '',
-    this.defaultPassword2Hint = '',
-    this.defaultPassword2ValidatorMessage = 'Passwords have to be equal',
   });
 
+  /// Constructs a [RegistrationTranslations] object with empty strings.
+  const RegistrationTranslations.empty()
+      : title = "",
+        registerBtn = "Register",
+        previousStepBtn = "Previous",
+        nextStepBtn = "Next",
+        closeBtn = "Close",
+        defaultEmailTitle = "enter your email address",
+        defaultEmailLabel = "",
+        defaultEmailHint = "Email address",
+        defaultEmailEmpty = "Please enter your email address.",
+        defaultEmailValidatorMessage = "Please enter a valid email address.",
+        defaultPasswordTitle = "choose a password",
+        defaultPasswordLabel = "",
+        defaultPasswordHint = "Password",
+        defaultPasswordValidatorMessage = "Enter a valid password",
+        defaultPasswordToShortValidatorMessage =
+            "Password needs to be at least 6 characters long";
+
+  /// The title of the registration screen.
   final String title;
+
+  /// The text for the registration button.
   final String registerBtn;
+
+  /// The text for the previous step button.
   final String previousStepBtn;
+
+  /// The text for the next step button.
   final String nextStepBtn;
+
+  /// The text for the close button.
   final String closeBtn;
+
+  /// The title for the default email field.
   final String defaultEmailTitle;
+
+  /// The label for the default email field.
   final String defaultEmailLabel;
+
+  /// The hint for the default email field.
   final String defaultEmailHint;
+
+  /// The message for an empty default email field.
   final String defaultEmailEmpty;
+
+  /// The message for an invalid default email field.
   final String defaultEmailValidatorMessage;
-  final String defaultPassword1Title;
+
-  final String defaultPassword1Label;
+  /// The title for the default password field.
-  final String defaultPassword1Hint;
+  final String defaultPasswordTitle;
-  final String defaultPassword1ValidatorMessage;
+
-  final String defaultPassword2Title;
+  /// The label for the default password field.
-  final String defaultPassword2Label;
+  final String defaultPasswordLabel;
-  final String defaultPassword2Hint;
+
-  final String defaultPassword2ValidatorMessage;
+  /// The hint for the default password field.
+  final String defaultPasswordHint;
+
+  /// The message for an invalid default password field.
+  final String defaultPasswordValidatorMessage;
+
+  /// The message for a default password that is too short.
+  final String defaultPasswordToShortValidatorMessage;
+
+  /// create a copywith
+  RegistrationTranslations copyWith({
+    String? title,
+    String? registerBtn,
+    String? previousStepBtn,
+    String? nextStepBtn,
+    String? closeBtn,
+    String? defaultEmailTitle,
+    String? defaultEmailLabel,
+    String? defaultEmailHint,
+    String? defaultEmailEmpty,
+    String? defaultEmailValidatorMessage,
+    String? defaultPasswordTitle,
+    String? defaultPasswordLabel,
+    String? defaultPasswordHint,
+    String? defaultPasswordValidatorMessage,
+    String? defaultPasswordToShortValidatorMessage,
+  }) =>
+      RegistrationTranslations(
+        title: title ?? this.title,
+        registerBtn: registerBtn ?? this.registerBtn,
+        previousStepBtn: previousStepBtn ?? this.previousStepBtn,
+        nextStepBtn: nextStepBtn ?? this.nextStepBtn,
+        closeBtn: closeBtn ?? this.closeBtn,
+        defaultEmailTitle: defaultEmailTitle ?? this.defaultEmailTitle,
+        defaultEmailLabel: defaultEmailLabel ?? this.defaultEmailLabel,
+        defaultEmailHint: defaultEmailHint ?? this.defaultEmailHint,
+        defaultEmailEmpty: defaultEmailEmpty ?? this.defaultEmailEmpty,
+        defaultEmailValidatorMessage:
+            defaultEmailValidatorMessage ?? this.defaultEmailValidatorMessage,
+        defaultPasswordTitle: defaultPasswordTitle ?? this.defaultPasswordTitle,
+        defaultPasswordLabel: defaultPasswordLabel ?? this.defaultPasswordLabel,
+        defaultPasswordHint: defaultPasswordHint ?? this.defaultPasswordHint,
+        defaultPasswordValidatorMessage: defaultPasswordValidatorMessage ??
+            this.defaultPasswordValidatorMessage,
+        defaultPasswordToShortValidatorMessage:
+            defaultPasswordToShortValidatorMessage ??
+                this.defaultPasswordToShortValidatorMessage,
+      );
 }

lib/src/model/auth_action.dart

@@ -2,14 +2,19 @@
 //
 // SPDX-License-Identifier: BSD-3-Clause
 
-import 'package:flutter/material.dart';
+import "package:flutter/material.dart";
 
+/// An action that can be performed during authentication.
 class AuthAction {
+  /// Constructs an [AuthAction] object.
   AuthAction({
     required this.title,
     required this.onPress,
   });
 
+  /// The title of the action.
   final String title;
+
+  /// A callback function triggered when the action is pressed.
   final VoidCallback onPress;
 }

lib/src/model/auth_bool_field.dart

@@ -0,0 +1,78 @@
+// SPDX-FileCopyrightText: 2022 Iconica
+//
+// SPDX-License-Identifier: BSD-3-Clause
+
+import "package:flutter/material.dart";
+import "package:flutter_input_library/flutter_input_library.dart";
+import "package:flutter_registration/flutter_registration.dart";
+
+/// A field for capturing boolean values in a Flutter form.
+///
+/// Extends [AuthField].
+class AuthBoolField extends AuthField {
+  /// Constructs an [AuthBoolField] object.
+  ///
+  /// [name] specifies the name of the field.
+  ///
+  /// [widgetType] defines the type of boolean widget to use.
+  ///
+  /// [title] specifies the title of the field (optional).
+  ///
+  /// [validators] defines a list of validation functions for the field.
+  ///
+  /// [value] specifies the initial value of the field (default is false).
+  ///
+  /// [leftWidget] is a widget to be displayed on the
+  /// left side of the boolean widget.
+  ///
+  /// [rightWidget] is a widget to be displayed on the
+  /// right side of the boolean widget.
+  ///
+  /// [onChange] is a callback function triggered when
+  /// the value of the field changes.
+  AuthBoolField({
+    required super.name,
+    required this.widgetType,
+    super.title,
+    super.validators = const [],
+    super.value = false,
+    this.leftWidget,
+    this.rightWidget,
+    this.onChange,
+  });
+
+  /// A widget to be displayed on the left side of the boolean widget.
+  final Widget? leftWidget;
+
+  /// A widget to be displayed on the right side of the boolean widget.
+  final Widget? rightWidget;
+
+  /// The type of boolean widget to use.
+  final BoolWidgetType widgetType;
+
+  /// A callback function triggered when the value of the field changes.
+  final Function(String value)? onChange;
+
+  @override
+  Widget build(BuildContext context, Function onValueChanged) =>
+      FlutterFormInputBool(
+        widgetType: widgetType,
+        onChanged: (v) {
+          value = v;
+          onChange?.call(value);
+          // ignore: avoid_dynamic_calls
+          onValueChanged();
+        },
+        validator: (value) {
+          for (var validator in validators) {
+            var output = validator(value);
+            if (output != null) {
+              return output;
+            }
+          }
+          return null;
+        },
+        leftWidget: leftWidget,
+        rightWidget: rightWidget,
+      );
+}

lib/src/model/auth_drop_down.dart

@@ -0,0 +1,78 @@
+import "package:flutter/material.dart";
+import "package:flutter_registration/flutter_registration.dart";
+
+/// A field for capturing dropdown selections in a Flutter form.
+///
+/// Extends [AuthField].
+class AuthDropdownField extends AuthField {
+  /// Constructs an [AuthDropdownField] object.
+  AuthDropdownField({
+    required super.name,
+    required this.items,
+    required this.onChanged,
+    required super.value,
+    this.dropdownDecoration,
+    this.padding = const EdgeInsets.all(8.0),
+    this.textStyle,
+    this.icon = const Icon(Icons.keyboard_arrow_down),
+  }) {
+    selectedValue = value ?? items.first;
+  }
+
+  /// The list of items for the dropdown.
+  final List<String> items;
+
+  /// A callback function triggered when the dropdown value changes.
+  final Function(String?) onChanged;
+
+  /// The currently selected value in the dropdown.
+  String? selectedValue;
+
+  /// The decoration for the dropdown.
+  final InputDecoration? dropdownDecoration;
+
+  /// The padding around the dropdown.
+  final EdgeInsets padding;
+
+  /// The text style for the dropdown.
+  final TextStyle? textStyle;
+
+  /// The icon to be displayed with the dropdown.
+  final Icon icon;
+
+  @override
+  Widget build(BuildContext context, Function onValueChanged) => Padding(
+        padding: padding,
+        child: DropdownButtonFormField<String>(
+          icon: icon,
+          style: textStyle,
+          value: selectedValue,
+          decoration: dropdownDecoration,
+          items: items
+              .map(
+                (String value) => DropdownMenuItem<String>(
+                  value: value,
+                  child: Text(value),
+                ),
+              )
+              .toList(),
+          onChanged: (newValue) {
+            selectedValue = newValue;
+            onChanged(newValue);
+            // ignore: avoid_dynamic_calls
+            onValueChanged();
+          },
+          validator: (value) {
+            if (validators.isNotEmpty) {
+              for (var validator in validators) {
+                var output = validator(value);
+                if (output != null) {
+                  return output;
+                }
+              }
+            }
+            return null;
+          },
+        ),
+      );
+}

lib/src/model/auth_exception.dart

@@ -2,12 +2,14 @@
 //
 // SPDX-License-Identifier: BSD-3-Clause
 
+/// An exception thrown when an authentication error occurs.
 class AuthException implements Exception {
+  /// Constructs an [AuthException] object.
   AuthException(this.message);
+
+  /// The error message.
   final String message;
 
   @override
-  String toString() {
+  String toString() => message;
-    return message;
-  }
 }

lib/src/model/auth_field.dart

@@ -2,20 +2,53 @@
 //
 // SPDX-License-Identifier: BSD-3-Clause
 
-import 'package:flutter/material.dart';
+import "package:flutter/material.dart";
 
-abstract class AuthField {
+/// An abstract class representing a field in a Flutter form.
+///
+/// [T] represents the type of value stored in the field.
+abstract class AuthField<T> {
+  /// Constructs an [AuthField] object.
+  ///
+  /// [name] specifies the name of the field.
+  ///
+  /// [value] specifies the initial value of the field.
+  ///
+  /// [onValueChanged] is a callback function triggered when the
+  /// value of the field changes (optional).
+  ///
+  /// [title] specifies the title widget of the field (optional).
+  ///
+  /// [validators] defines a list of validation
+  /// functions for the field (optional).
   AuthField({
     required this.name,
+    required this.value,
+    this.onValueChanged,
     this.title,
     this.validators = const [],
-    this.value = '',
   });
 
+  /// The name of the field.
   final String name;
-  final Widget? title;
-  List<String? Function(String?)> validators;
-  String value;
 
-  Widget build();
+  /// The initial value of the field.
+  T value;
+
+  /// A callback function triggered when the value of the field changes.
+  final Function(T)? onValueChanged;
+
+  /// The title widget of the field.
+  final Widget? title;
+
+  /// A list of validation functions for the field.
+  List<String? Function(T?)> validators;
+
+  /// Builds the widget representing the field.
+  ///
+  /// [context] The build context.
+  ///
+  /// [onValueChanged] A function to be called when
+  /// the value of the field changes.
+  Widget build(BuildContext context, Function onValueChanged);
 }

lib/src/model/auth_pass_field.dart

@@ -0,0 +1,96 @@
+// SPDX-FileCopyrightText: 2024 Iconica
+//
+// SPDX-License-Identifier: BSD-3-Clause
+
+import "package:flutter/material.dart";
+import "package:flutter_input_library/flutter_input_library.dart";
+import "package:flutter_registration/flutter_registration.dart";
+
+/// A field for capturing password inputs in a Flutter form.
+///
+/// Extends [AuthField].
+class AuthPassField extends AuthField {
+  /// Constructs an [AuthPassField] object.
+  ///
+  /// [name] specifies the name of the field.
+  ///
+  /// [textEditingController] controller for the password input (optional).
+  ///
+  /// [title] specifies the title widget of the field (optional).
+  ///
+  /// [validators] defines a list of validation
+  /// functions for the field (optional).
+  ///
+  /// [value] specifies the initial value of the
+  /// field (default is an empty string).
+  ///
+  /// [textStyle] defines the text style for the password input.
+  ///
+  /// [onChange] is a callback function triggered when
+  /// the value of the field changes.
+  ///
+  /// [iconSize] specifies the size of the icon displayed
+  /// with the password input (optional).
+  ///
+  /// [textFieldDecoration] defines the decoration for the
+  /// password input field (optional).
+  ///
+  /// [padding] defines the padding around the password input
+  /// field (default is EdgeInsets.all(8.0)).
+  AuthPassField({
+    required super.name,
+    this.textEditingController,
+    super.title,
+    super.validators = const [],
+    super.value = "",
+    this.textStyle,
+    this.onChange,
+    this.iconSize,
+    this.textFieldDecoration,
+    this.padding = const EdgeInsets.all(8.0),
+  });
+
+  /// The text style for the password input.
+  final TextStyle? textStyle;
+
+  /// The size of the icon displayed with the password input.
+  final double? iconSize;
+
+  /// A callback function triggered when the value of the field changes.
+  final Function(String value)? onChange;
+
+  /// The decoration for the password input field.
+  final InputDecoration? textFieldDecoration;
+
+  /// The padding around the password input field.
+  final EdgeInsets padding;
+
+  /// The controller for the password input.
+  final TextEditingController? textEditingController;
+
+  @override
+  Widget build(BuildContext context, Function onValueChanged) => Padding(
+        padding: padding,
+        child: FlutterFormInputPassword(
+          style: textStyle,
+          iconSize: iconSize ?? 24.0,
+          decoration: textFieldDecoration,
+          onChanged: (v) {
+            value = v;
+            onChange?.call(value);
+            // ignore: avoid_dynamic_calls
+            onValueChanged();
+          },
+          validator: (value) {
+            for (var validator in validators) {
+              var output = validator(value);
+              if (output != null) {
+                return output;
+              }
+            }
+
+            return null;
+          },
+        ),
+      );
+}

lib/src/model/auth_step.dart

@@ -2,12 +2,15 @@
 //
 // SPDX-License-Identifier: BSD-3-Clause
 
-import 'package:flutter_registration/src/model/auth_field.dart';
+import "package:flutter_registration/src/model/auth_field.dart";
 
+/// A step in the authentication process.
 class AuthStep {
+  /// Constructs an [AuthStep] object.
   AuthStep({
     required this.fields,
   });
 
+  /// The fields in the step.
   List<AuthField> fields;
 }

lib/src/model/auth_text_field.dart

@@ -2,82 +2,95 @@
 //
 // SPDX-License-Identifier: BSD-3-Clause
 
-import 'package:flutter/material.dart';
+import "package:flutter/material.dart";
-import 'package:flutter_registration/flutter_registration.dart';
+import "package:flutter_registration/flutter_registration.dart";
 
+/// A field for capturing text inputs in a Flutter form.
+///
+/// Extends [AuthField].
 class AuthTextField extends AuthField {
+  /// Constructs an [AuthTextField] object.
+  ///
+  /// [name] specifies the name of the field.
+  ///
+  /// [textEditingController] controller for the text input (optional).
+  ///
+  /// [title] specifies the title widget of the field (optional).
+  ///
+  /// [validators] defines a list of validation
+  /// functions for the field (optional).
+  ///
+  /// [value] specifies the initial value of the
+  /// field (default is an empty string).
+  ///
+  /// [textStyle] defines the text style for the text input.
+  ///
+  /// [onChange] is a callback function triggered
+  /// when the value of the field changes.
+  ///
+  /// [textFieldDecoration] defines the decoration
+  /// for the text input field (optional).
+  ///
+  /// [padding] defines the padding around the text
+  /// input field (default is EdgeInsets.all(8.0)).
   AuthTextField({
     required super.name,
     TextEditingController? textEditingController,
     super.title,
     super.validators = const [],
-    super.value = '',
+    super.value = "",
-    this.obscureText = false,
-    this.hintText,
-    this.label,
     this.textStyle,
     this.onChange,
-    this.hidden,
+    this.textFieldDecoration,
-    this.onPassChanged,
+    this.padding = const EdgeInsets.all(8.0),
+    this.textInputType,
   }) {
     textController =
         textEditingController ?? TextEditingController(text: value);
   }
 
+  /// The controller for the text input.
   late TextEditingController textController;
-  final bool obscureText;
+
-  final String? hintText;
+  /// The text style for the text input.
-  final Widget? label;
   final TextStyle? textStyle;
+
+  /// A callback function triggered when the value of the field changes.
   final Function(String value)? onChange;
-  final bool? hidden;
+
-  final Function(bool value)? onPassChanged;
+  /// The decoration for the text input field.
+  final InputDecoration? textFieldDecoration;
+
+  /// The padding around the text input field.
+  final EdgeInsets padding;
+
+  /// The type of text input.
+  final TextInputType? textInputType;
 
   @override
-  Widget build() {
+  Widget build(BuildContext context, Function onValueChanged) => Padding(
-    Widget? suffix;
+        padding: padding,
-
+        child: TextFormField(
-    if (hidden != null) {
+          keyboardType: textInputType,
-      if (hidden!) {
+          style: textStyle,
-        suffix = GestureDetector(
+          decoration: textFieldDecoration,
-          onTap: () {
+          controller: textController,
-            onPassChanged?.call(!hidden!);
+          onChanged: (v) {
+            value = v;
+            onChange?.call(value);
+            // ignore: avoid_dynamic_calls
+            onValueChanged();
           },
-          child: const Icon(Icons.visibility),
+          validator: (value) {
-        );
+            for (var validator in validators) {
-      } else {
+              var output = validator(value);
-        suffix = GestureDetector(
+              if (output != null) {
-          onTap: () {
+                return output;
-            onPassChanged?.call(!hidden!);
+              }
+            }
+
+            return null;
           },
-          child: const Icon(Icons.visibility_off),
+        ),
-        );
+      );
-      }
-    }
-
-    return TextFormField(
-      style: textStyle,
-      decoration: InputDecoration(
-        label: label,
-        hintText: hintText,
-        suffix: suffix,
-      ),
-      controller: textController,
-      obscureText: hidden ?? obscureText,
-      onChanged: (v) {
-        value = v;
-        onChange?.call(value);
-      },
-      validator: (value) {
-        for (var validator in validators) {
-          var output = validator(value);
-          if (output != null) {
-            return output;
-          }
-        }
-
-        return null;
-      },
-    );
-  }
 }

lib/src/registration_screen.dart

@@ -1,57 +1,77 @@
-// SPDX-FileCopyrightText: 2022 Iconica
+import "dart:collection";
-//
-// SPDX-License-Identifier: BSD-3-Clause
 
-import 'dart:collection';
+import "package:flutter/material.dart";
+import "package:flutter_registration/flutter_registration.dart";
+import "package:flutter_registration/src/auth_screen.dart";
 
-import 'package:flutter/material.dart';
+/// A screen for user registration.
-import 'package:flutter_registration/flutter_registration.dart';
+class RegistrationScreen extends StatefulWidget {
-import 'package:flutter_registration/src/auth_screen.dart';
+  /// Constructs a [RegistrationScreen] object.
-
+  ///
-class RegistrationScreen extends StatelessWidget {
+  /// [registrationOptions] specifies the registration options.
   const RegistrationScreen({
     required this.registrationOptions,
     super.key,
   });
 
+  /// The registration options.
   final RegistrationOptions registrationOptions;
 
-  Future<void> register({
+  @override
-    required HashMap<String, String> values,
+  RegistrationScreenState createState() => RegistrationScreenState();
-    required VoidCallback onError,
+}
+
+/// The state for [RegistrationScreen].
+class RegistrationScreenState extends State<RegistrationScreen> {
+  /// Registers the user.
+  Future<void> _register({
+    required HashMap<String, dynamic> values,
+    required void Function(int? pageToReturn) onError,
   }) async {
     try {
-      var registered =
+      await widget.registrationOptions.beforeRegistration?.call();
-          await registrationOptions.registrationRepository.register(values);
+
+      var registered = await widget.registrationOptions.registrationRepository!
+          .register(values);
 
       if (registered == null) {
-        registrationOptions.afterRegistration();
+        widget.registrationOptions.afterRegistration();
       } else {
-        registrationOptions.onError?.call(registered);
+        var pageToReturn = widget.registrationOptions.onError?.call(registered);
-        onError();
+
+        onError(pageToReturn);
       }
-    } catch (e) {
+    } on Exception catch (_) {
-      onError();
+      onError(null);
     }
   }
 
   @override
   Widget build(BuildContext context) {
-    var translations = registrationOptions.registrationTranslations;
+    var translations = widget.registrationOptions.registrationTranslations;
 
     return AuthScreen(
-      steps: registrationOptions.registrationSteps,
+      steps: widget.registrationOptions.steps,
-      customAppBar: registrationOptions.customAppbarBuilder?.call(
+      customAppBar: widget.registrationOptions.customAppbarBuilder?.call(
         translations.title,
       ),
-      onFinish: register,
+      onFinish: _register,
-      title: translations.title,
+      appBarTitle: translations.title,
       submitBtnTitle: translations.registerBtn,
       nextBtnTitle: translations.nextStepBtn,
       previousBtnTitle: translations.previousStepBtn,
-      nextButtonBuilder: registrationOptions.nextButtonBuilder,
+      nextButtonBuilder: widget.registrationOptions.nextButtonBuilder,
-      previousButtonBuilder: registrationOptions.previousButtonBuilder,
+      previousButtonBuilder: widget.registrationOptions.previousButtonBuilder,
-      customBackgroundColor: registrationOptions.backgroundColor,
+      buttonMainAxisAlignment:
+          widget.registrationOptions.buttonMainAxisAlignment,
+      customBackgroundColor: widget.registrationOptions.backgroundColor,
+      titleWidget: widget.registrationOptions.titleWidget,
+      loginButton: widget.registrationOptions.loginButton,
+      titleFlex: widget.registrationOptions.titleFlex,
+      formFlex: widget.registrationOptions.formFlex,
+      beforeTitleFlex: widget.registrationOptions.beforeTitleFlex,
+      afterTitleFlex: widget.registrationOptions.afterTitleFlex,
+      maxFormWidth: widget.registrationOptions.maxFormWidth,
     );
   }
 }

lib/src/service/registration_repository.dart

@@ -2,8 +2,10 @@
 //
 // SPDX-License-Identifier: BSD-3-Clause
 
-import 'dart:collection';
+import "dart:collection";
 
+/// A mixin for a registration repository.
 mixin RegistrationRepository {
+  /// Registers a user with the given values.
   Future<String?> register(HashMap values);
 }

pubspec.yaml

@@ -4,14 +4,20 @@
 
 name: flutter_registration
 description: A Flutter Registration package
-version: 1.0.0
+version: 3.0.0
 repository: https://github.com/Iconica-Development/flutter_registration
 
+publish_to: https://forgejo.internal.iconica.nl/api/packages/internal/pub
+
 environment:
-  sdk: ">=2.18.0 <3.0.0"
+  sdk: ">=3.0.0 <4.0.0"
   flutter: ">=1.17.0"
 
 dependencies:
+  flutter_input_library:
+    hosted: https://forgejo.internal.iconica.nl/api/packages/internal/pub
+    version: ^3.6.0
+
   flutter:
     sdk: flutter
   flutter_localizations:
@@ -20,6 +26,9 @@ 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: 7.0.0
 
 flutter:

test/flutter_email_password_login_test.dart

@@ -3,10 +3,10 @@
 // SPDX-License-Identifier: BSD-3-Clause
 // SPDX-License-Identifier: GPL-3.0-or-later
 
-import 'package:flutter_test/flutter_test.dart';
+import "package:flutter_test/flutter_test.dart";
 
 void main() {
-  test('test', () {
+  test("test", () {
     expect(true, true);
   });
 }