doc: create documentation for files

lib/src/utils/form_page_controller.dart

@@ -4,20 +4,26 @@
 
 import 'package:flutter_form_wizard/flutter_form.dart';
 
+/// Controller class for managing input controllers in a Flutter form.
 class FlutterFormPageController {
+  /// List of input controllers.
   List<FlutterFormInputController> _controllers = [];
 
+  /// Registers an input controller.
   void register(FlutterFormInputController inputController) {
     _controllers.add(inputController);
   }
 
+  /// Clears all registered input controllers.
   void clearControllers() {
     _controllers = [];
   }
 
+  /// Checks if an input controller is registered with a given ID.
   bool _isRegisteredById(String id) =>
       _controllers.any((element) => element.id == id);
 
+  /// Retrieves the input controller associated with the provided ID.
   FlutterFormInputController? getController(String key) {
     if (_isRegisteredById(key)) {
       return _controllers.firstWhere((element) => element.id == key);
@@ -25,6 +31,7 @@ class FlutterFormPageController {
     return null;
   }
 
+  /// Retrieves all values from registered input controllers.
   Map<String, dynamic> getAllValues() {
     var values = <String, dynamic>{};
 

lib/src/utils/formstate.dart

@@ -5,15 +5,19 @@
 import 'package:flutter/material.dart';
 import 'package:flutter_form_wizard/src/utils/form_page_controller.dart';
 
+/// Widget for managing form state and providing access to form controller.
 class FormState extends InheritedWidget {
+  /// Constructor for FormState.
   const FormState({
     required super.child,
     required this.formController,
     super.key,
   });
 
+  /// The form controller associated with this FormState.
   final FlutterFormPageController formController;
 
+  /// Retrieves the nearest ancestor FormState from the given context.
   static FormState of(BuildContext context) {
     var result = context.dependOnInheritedWidgetOfExactType<FormState>();
     assert(result != null, 'No FormStat found in context');

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

@@ -13,6 +13,22 @@ import 'package:intl/intl.dart';
 ///
 /// Standard controller is [FlutterFormInputDateController].
 class FlutterFormInputDateTime extends FlutterFormInputWidget<String> {
+  /// Creates a [FlutterFormInputDateTime].
+  ///
+  /// The [controller], [inputType], [dateFormat] are required parameters.
+  /// The [label] parameter specifies the label of the input field.
+  /// The [showIcon] parameter determines whether to show an icon
+  /// with the input field.
+  /// The [firstDate] and [lastDate] parameters specify the range
+  /// of selectable dates.
+  /// The [initialDate] parameter specifies the initial date for
+  /// the input field.
+  /// The [initialDateTimeRange] parameter specifies the initial
+  /// date time range for the input field.
+  /// The [icon] parameter specifies the icon to show with the input field.
+  /// The [enabled] parameter specifies whether the input field is enabled.
+  /// The [onTapEnabled] parameter specifies whether tapping on
+  /// the input field is enabled.
   const FlutterFormInputDateTime({
     required super.controller,
     required this.inputType,
@@ -70,6 +86,12 @@ class FlutterFormInputDateTime extends FlutterFormInputWidget<String> {
 /// Mainly used by [FlutterFormInputDateTime].
 class FlutterFormInputDateTimeController
     implements FlutterFormInputController<String> {
+  /// Creates a [FlutterFormInputDateTimeController].
+  ///
+  /// The [id], [dateTimeType], and [dateFormat] are required parameters.
+  /// The [mandatory] parameter specifies whether the input is mandatory.
+  /// The [value], [initialDate], [initialDateTimeRange], [checkPageTitle],
+  /// [checkPageDescription], and [onChanged] parameters are optional.
   FlutterFormInputDateTimeController({
     required this.id,
     required this.dateTimeType,

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

@@ -10,6 +10,10 @@ import 'package:flutter_input_library/flutter_input_library.dart' as input;
 ///
 /// Standard controller is [FlutterFormInputEmailController].
 class FlutterFormInputEmail extends FlutterFormInputWidget<String> {
+  /// Creates a [FlutterFormInputEmail].
+  ///
+  /// The [controller] parameter is required.
+  /// The [key], [focusNode], [label], and [enabled] parameters are optional.
   const FlutterFormInputEmail({
     required super.controller,
     super.key,
@@ -49,6 +53,12 @@ class FlutterFormInputEmail extends FlutterFormInputWidget<String> {
 /// Mainly used by [FlutterFormInputEmail].
 class FlutterFormInputEmailController
     implements FlutterFormInputController<String> {
+  /// Creates a [FlutterFormInputEmailController].
+  ///
+  /// The [id] parameter specifies the unique identifier for the controller.
+  /// The [mandatory] parameter specifies whether the input is mandatory.
+  /// The [value], [checkPageTitle], [checkPageDescription], [onChanged],
+  /// and [onSubmit] parameters are optional.
   FlutterFormInputEmailController({
     required this.id,
     this.mandatory = true,

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

@@ -41,8 +41,18 @@ class FlutterFormInputNumberPicker extends FlutterFormInputWidget<int> {
   }
 }
 
+/// Controller for numbers used by a [FlutterFormInputWidget] used in a
+/// [FlutterForm].
+///
+/// Mainly used by [FlutterFormInputNumberPicker].
 class FlutterFormInputNumberPickerController
     implements FlutterFormInputController<int> {
+  /// Creates a [FlutterFormInputNumberPickerController].
+  ///
+  /// The [id] parameter specifies the unique identifier for the controller.
+  /// The [mandatory] parameter specifies whether the input is mandatory.
+  /// The [value], [checkPageTitle], [checkPageDescription],
+  /// and [onChanged] parameters are optional.
   FlutterFormInputNumberPickerController({
     required this.id,
     this.mandatory = true,

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

@@ -44,6 +44,12 @@ class FlutterFormInputPassword extends FlutterFormInputWidget<String> {
 /// Mainly used by [FlutterFormInputPassword].
 class FlutterFormInputPasswordController
     implements FlutterFormInputController<String> {
+  /// Creates a [FlutterFormInputPasswordController].
+  ///
+  /// The [id] parameter specifies the unique identifier for the controller.
+  /// The [mandatory] parameter specifies whether the input is mandatory.
+  /// The [value], [checkPageTitle], [checkPageDescription], [onChanged],
+  ///  and [onSubmit] parameters are optional.
   FlutterFormInputPasswordController({
     required this.id,
     this.mandatory = true,

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

@@ -12,6 +12,12 @@ import 'package:flutter_input_library/flutter_input_library.dart' as input;
 ///
 /// Standard controller is [FlutterFormInputPlainTextController].
 class FlutterFormInputPlainText extends FlutterFormInputWidget<String> {
+  /// Creates a [FlutterFormInputPlainText].
+  ///
+  /// The [controller] parameter is required.
+  /// The [key], [focusNode], [label], [decoration], [textAlignVertical],
+  /// [expands], [maxLines], [scrollPadding], [maxLength], [keyboardType],
+  /// [enabled], [style], and [textCapitalization] parameters are optional.
   const FlutterFormInputPlainText({
     required super.controller,
     super.key,
@@ -92,13 +98,25 @@ class FlutterFormInputMultiLine extends StatelessWidget {
     this.textCapitalization = TextCapitalization.sentences,
   });
 
+  /// The controller for the multi-line input.
   final FlutterFormInputController<String> controller;
+
+  /// The optional label widget for the input.
   final Widget? label;
+
+  /// The optional focus node for the input.
   final FocusNode? focusNode;
 
+  /// The optional hint text displayed inside the input field.
   final String? hint;
+
+  /// The optional maximum number of characters allowed in the input field.
   final int? maxCharacters;
+
+  /// A flag indicating whether the input field is enabled.
   final bool enabled;
+
+  /// The capitalization behavior for the input field.
   final TextCapitalization textCapitalization;
 
   @override
@@ -126,6 +144,12 @@ class FlutterFormInputMultiLine extends StatelessWidget {
 /// Mainly used by [FlutterFormInputPlainText].
 class FlutterFormInputPlainTextController
     implements FlutterFormInputController<String> {
+  /// Creates a [FlutterFormInputPlainTextController].
+  ///
+  /// The [id] parameter specifies the unique identifier for the controller.
+  /// The [mandatory] parameter specifies whether the input is mandatory.
+  /// The [value], [checkPageTitle], [checkPageDescription], [onChanged],
+  /// and [onSubmit] parameters are optional.
   FlutterFormInputPlainTextController({
     required this.id,
     this.mandatory = false,

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

@@ -11,6 +11,12 @@ import 'package:flutter_input_library/flutter_input_library.dart' as input;
 ///
 /// Standard controller is [FlutterFormInputSliderController].
 class FlutterFormInputSlider extends FlutterFormInputWidget<double> {
+  /// Creates a [FlutterFormInputPassword].
+  ///
+  /// The [controller] parameter is required.
+  /// The [focusNode] parameter specifies the focus node of the input field.
+  /// The [label] parameter specifies the label of the input field.
+  /// The [enabled] parameter specifies whether the input field is enabled.
   const FlutterFormInputSlider({
     required super.controller,
     super.key,
@@ -43,6 +49,12 @@ class FlutterFormInputSlider extends FlutterFormInputWidget<double> {
 /// Mainly used by [FlutterFormInputSlider].
 class FlutterFormInputSliderController
     implements FlutterFormInputController<double> {
+  /// Creates a [FlutterFormInputPasswordController].
+  ///
+  /// The [id] parameter specifies the unique identifier for the controller.
+  /// The [mandatory] parameter specifies whether the input is mandatory.
+  /// The [value], [checkPageTitle], [checkPageDescription], [onChanged],
+  /// and [onSubmit] parameters are optional.
   FlutterFormInputSliderController({
     required this.id,
     this.mandatory = true,

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

@@ -42,6 +42,12 @@ class FlutterFormInputSwitch extends FlutterFormInputWidget<bool> {
 /// Mainly used by [FlutterFormInputSwitch].
 class FlutterFormInputSwitchController
     implements FlutterFormInputController<bool> {
+  /// Creates a [FlutterFormInputSwitchController].
+  ///
+  /// The [id] parameter specifies the unique identifier for the controller.
+  /// The [mandatory] parameter specifies whether the input is mandatory.
+  /// The [value], [checkPageTitle], [checkPageDescription],
+  /// and [onChanged] parameters are optional.
   FlutterFormInputSwitchController({
     required this.id,
     this.mandatory = true,