fix: Split the controller into a configration and controller.

example/.metadata

@@ -1,11 +1,11 @@
 # This file tracks properties of this Flutter project.
 # Used by Flutter tool to assess capabilities and perform upgrades etc.
 #
-# This file should be version controlled.
+# This file should be version controlled and should not be manually edited.
 
 version:
-  revision: b8f7f1f9869bb2d116aa6a70dbeac61000b52849
+  revision: "6c4930c4ac86fb286f30e31d0ec8bffbcbb9953e"
-  channel: stable
+  channel: "stable"
 
 project_type: app
 
@@ -13,11 +13,26 @@ project_type: app
 migration:
   platforms:
     - platform: root
-      create_revision: b8f7f1f9869bb2d116aa6a70dbeac61000b52849
+      create_revision: 6c4930c4ac86fb286f30e31d0ec8bffbcbb9953e
-      base_revision: b8f7f1f9869bb2d116aa6a70dbeac61000b52849
+      base_revision: 6c4930c4ac86fb286f30e31d0ec8bffbcbb9953e
+    - platform: android
+      create_revision: 6c4930c4ac86fb286f30e31d0ec8bffbcbb9953e
+      base_revision: 6c4930c4ac86fb286f30e31d0ec8bffbcbb9953e
+    - platform: ios
+      create_revision: 6c4930c4ac86fb286f30e31d0ec8bffbcbb9953e
+      base_revision: 6c4930c4ac86fb286f30e31d0ec8bffbcbb9953e
+    - platform: linux
+      create_revision: 6c4930c4ac86fb286f30e31d0ec8bffbcbb9953e
+      base_revision: 6c4930c4ac86fb286f30e31d0ec8bffbcbb9953e
+    - platform: macos
+      create_revision: 6c4930c4ac86fb286f30e31d0ec8bffbcbb9953e
+      base_revision: 6c4930c4ac86fb286f30e31d0ec8bffbcbb9953e
     - platform: web
-      create_revision: b8f7f1f9869bb2d116aa6a70dbeac61000b52849
+      create_revision: 6c4930c4ac86fb286f30e31d0ec8bffbcbb9953e
-      base_revision: b8f7f1f9869bb2d116aa6a70dbeac61000b52849
+      base_revision: 6c4930c4ac86fb286f30e31d0ec8bffbcbb9953e
+    - platform: windows
+      create_revision: 6c4930c4ac86fb286f30e31d0ec8bffbcbb9953e
+      base_revision: 6c4930c4ac86fb286f30e31d0ec8bffbcbb9953e
 
   # User provided section
 

example/lib/main.dart

@@ -158,6 +158,8 @@ class DatePickerDemo extends StatelessWidget {
             onTimerPickerSheetChange: (value) {},
             controller: DateTimePickerController(
               initialDate: DateTime.now(),
+            ),
+            configuration: DateTimePickerConfiguration(
               highlightToday: true,
               alwaysUse24HourFormat: true,
               markedDates: [DateTime.now().subtract(const Duration(days: 1))],

example/pubspec.lock

@@ -68,7 +68,7 @@ packages:
       path: ".."
       relative: true
     source: path
-    version: "3.3.3"
+    version: "4.0.0"
   flutter_lints:
     dependency: "direct dev"
     description:

lib/flutter_date_time_picker.dart

@@ -6,6 +6,7 @@ library flutter_date_time_picker;
 
 export 'src/drag_down_date_time_picker.dart' show DragDownDateTimePicker;
 export 'src/utils/date_time_picker_controller.dart';
+export 'src/utils/date_time_picker_config.dart';
 export 'src/overlay_date_time_picker.dart' show OverlayDateTimePicker;
 export 'src/models/date_constraint.dart';
 export 'src/enums/date_box_shape.dart';

lib/src/drag_down_date_time_picker.dart

@@ -3,6 +3,7 @@
 // SPDX-License-Identifier: BSD-3-Clause
 
 import 'package:flutter/material.dart';
+import 'package:flutter_date_time_picker/src/utils/date_time_picker_config.dart';
 
 import 'package:flutter_date_time_picker/src/utils/date_time_picker_controller.dart';
 import 'package:flutter_date_time_picker/src/widgets/month_date_time_picker/month_date_time_picker_sheet.dart';
@@ -16,6 +17,7 @@ class DragDownDateTimePicker extends StatefulWidget {
 
   const DragDownDateTimePicker({
     required this.controller,
+    required this.configuration,
     this.onTimerPickerSheetChange,
     this.wrongTimeDialog,
     this.child,
@@ -23,6 +25,7 @@ class DragDownDateTimePicker extends StatefulWidget {
   });
 
   final DateTimePickerController controller;
+  final DateTimePickerConfiguration configuration;
 
   /// The child contained by the DatePicker.
   final Widget? child;
@@ -78,9 +81,9 @@ class _DragDownDateTimePickerState extends State<DragDownDateTimePicker> {
           child: DraggableScrollableSheet(
             controller: _dragController,
             snap: true,
-            minChildSize: _dateTimePickerController.theme.weekViewSize,
+            minChildSize: widget.configuration.theme.weekViewSize,
-            initialChildSize: _dateTimePickerController.theme.weekViewSize,
+            initialChildSize: widget.configuration.theme.weekViewSize,
-            maxChildSize: _dateTimePickerController.theme.monthViewSize,
+            maxChildSize: widget.configuration.theme.monthViewSize,
             builder: (context, scrollController) {
               double dragSize =
                   _dragController.isAttached ? _dragController.size : 0;
@@ -96,8 +99,7 @@ class _DragDownDateTimePickerState extends State<DragDownDateTimePicker> {
                         padding: const EdgeInsets.only(bottom: 12.5),
                         child: Container(
                           decoration: BoxDecoration(
-                            color:
+                            color: widget.configuration.theme.backgroundColor,
-                                _dateTimePickerController.theme.backgroundColor,
                             borderRadius: const BorderRadius.only(
                               bottomLeft: Radius.circular(20),
                               bottomRight: Radius.circular(20),
@@ -110,21 +112,25 @@ class _DragDownDateTimePickerState extends State<DragDownDateTimePicker> {
                             ],
                           ),
                           child: dragSize <
-                                  _dateTimePickerController
+                                  widget
-                                      .theme.weekMonthTriggerSize
+                                      .configuration.theme.weekMonthTriggerSize
                               ? WeekDateTimePickerSheet(
                                   dateTimePickerController:
                                       _dateTimePickerController,
-                                  weekDateBoxSize:
+                                  dateTimePickerConfiguration:
-                                      widget.controller.theme.weekDateBoxSize,
+                                      widget.configuration,
+                                  weekDateBoxSize: widget
+                                      .configuration.theme.weekDateBoxSize,
                                 )
                               : MonthDateTimePickerSheet(
                                   dateTimePickerController:
                                       _dateTimePickerController,
-                                  monthDateBoxSize:
+                                  dateTimePickerConfiguration:
-                                      widget.controller.theme.monthDateBoxSize,
+                                      widget.configuration,
-                                  monthDatePadding:
+                                  monthDateBoxSize: widget
-                                      widget.controller.theme.monthDatePadding,
+                                      .configuration.theme.monthDateBoxSize,
+                                  monthDatePadding: widget
+                                      .configuration.theme.monthDatePadding,
                                 ),
                         ),
                       ),

lib/src/overlay_date_time_picker.dart

@@ -4,6 +4,7 @@
 
 import 'package:flutter/material.dart';
 import 'package:flutter_date_time_picker/src/models/date_time_picker_theme.dart';
+import 'package:flutter_date_time_picker/src/utils/date_time_picker_config.dart';
 import 'package:flutter_date_time_picker/src/utils/date_time_picker_controller.dart';
 import 'package:flutter_date_time_picker/src/models/date_constraint.dart';
 import 'package:flutter_date_time_picker/src/widgets/overlay_date_time_picker/overlay.dart';
@@ -106,6 +107,15 @@ class _OverlayDateTimePickerState extends State<OverlayDateTimePicker> {
 
   late bool _isShown = widget.isShown;
   late final DateTimePickerController _dateTimePickerController;
+  late final _dateTimePickerConfiguration = DateTimePickerConfiguration(
+    highlightToday: widget.highlightToday,
+    alwaysUse24HourFormat: widget.alwaysUse24HourFormat,
+    pickTime: widget.pickTime,
+    theme: widget.theme,
+    markedDates: widget.markedDates,
+    disabledDates: widget.disabledDates,
+    disabledTimes: widget.disabledTimes,
+  );
 
   _DropdownRoute? _dropdownRoute;
 
@@ -114,13 +124,6 @@ class _OverlayDateTimePickerState extends State<OverlayDateTimePicker> {
     super.initState();
     initializeDateFormatting();
     _dateTimePickerController = DateTimePickerController(
-      highlightToday: widget.highlightToday,
-      alwaysUse24HourFormat: widget.alwaysUse24HourFormat,
-      pickTime: widget.pickTime,
-      theme: widget.theme,
-      markedDates: widget.markedDates,
-      disabledDates: widget.disabledDates,
-      disabledTimes: widget.disabledTimes,
       onTapDayCallBack: (date) {
         widget.onTapDay?.call(date);
         if (widget.closeOnSelectDate) {
@@ -231,6 +234,7 @@ class _OverlayDateTimePickerState extends State<OverlayDateTimePicker> {
             weekdayTextStyle: widget.textStyle,
             size: widget.size,
             controller: _dateTimePickerController,
+            configuration: _dateTimePickerConfiguration,
             showWeekDays: true,
             onNextDate: nextDate,
             onPreviousDate: previousDate,

lib/src/utils/date_time_picker_config.dart

@@ -0,0 +1,47 @@
+// SPDX-FileCopyrightText: 2023 Iconica
+//
+// SPDX-License-Identifier: BSD-3-Clause
+
+import 'package:flutter/material.dart';
+import 'package:flutter_date_time_picker/flutter_date_time_picker.dart';
+
+class DateTimePickerConfiguration {
+  DateTimePickerConfiguration({
+    required this.theme,
+    this.pickTime = false,
+    this.highlightToday = true,
+    this.alwaysUse24HourFormat,
+    this.header,
+    this.wrongTimeDialog,
+    this.markedDates,
+    this.disabledDates,
+    this.disabledTimes,
+  });
+
+  /// Whether the current day should be highlighted in the [DragDownDateTimePicker]
+  final bool highlightToday;
+
+  /// a [bool] to set de clock on [TimePickerDialog] to a fixed 24 or 12-hour format.
+  /// By default this gets determined by the settings on the user device.
+  final bool? alwaysUse24HourFormat;
+
+  /// Widget shown at the top of the [DragDownDateTimePicker]
+  final Widget? header;
+
+  final Widget? wrongTimeDialog;
+
+  /// Visual properties for the [DragDownDateTimePicker]
+  final DateTimePickerTheme theme;
+
+  /// [markedDates] contain the dates [DateTime] that will be marked in the [DragDownDateTimePicker] by a small dot.
+  final List<DateTime>? markedDates;
+
+  /// a [List] of [DateTime] objects that will be disabled and cannot be interacted with whatsoever.
+  final List<DateTime>? disabledDates;
+
+  /// a [List] of [TimeOfDay] objects that cannot be picked in the [TimePickerDialog].
+  final List<TimeOfDay>? disabledTimes;
+
+  /// [pickTime] is a [bool] that determines if the user is able to pick a time after picking a date using the [TimePickerDialog].
+  final bool pickTime;
+}

lib/src/utils/date_time_picker_controller.dart

@@ -3,51 +3,14 @@
 // SPDX-License-Identifier: BSD-3-Clause
 
 import 'package:flutter/material.dart';
-import 'package:flutter_date_time_picker/src/models/date_time_picker_theme.dart';
 
 class DateTimePickerController extends ChangeNotifier {
   DateTimePickerController({
-    required this.theme,
-    required this.highlightToday,
     required this.initialDate,
-    this.pickTime = false,
-    this.alwaysUse24HourFormat,
-    this.header,
-    this.wrongTimeDialog,
-    this.markedDates,
-    this.disabledDates,
-    this.disabledTimes,
     this.onTapDayCallBack,
     this.onBorderScrollCallback,
   });
 
-  /// Whether the current day should be highlighted in the [DragDownDateTimePicker]
-  final bool highlightToday;
-
-  /// a [bool] to set de clock on [TimePickerDialog] to a fixed 24 or 12-hour format.
-  /// By default this gets determined by the settings on the user device.
-  final bool? alwaysUse24HourFormat;
-
-  /// Widget shown at the top of the [DragDownDateTimePicker]
-  final Widget? header;
-
-  final Widget? wrongTimeDialog;
-
-  /// Visual properties for the [DragDownDateTimePicker]
-  final DateTimePickerTheme theme;
-
-  /// [markedDates] contain the dates [DateTime] that will be marked in the [DragDownDateTimePicker] by a small dot.
-  final List<DateTime>? markedDates;
-
-  /// a [List] of [DateTime] objects that will be disabled and cannot be interacted with whatsoever.
-  final List<DateTime>? disabledDates;
-
-  /// a [List] of [TimeOfDay] objects that cannot be picked in the [TimePickerDialog].
-  final List<TimeOfDay>? disabledTimes;
-
-  /// [pickTime] is a [bool] that determines if the user is able to pick a time after picking a date using the [TimePickerDialog].
-  final bool pickTime;
-
   /// Callback that provides the date tapped on as a [DateTime] object.
   final Function(DateTime)? onTapDayCallBack;
 

lib/src/widgets/date_time_picker/date_time_picker.dart

@@ -1,5 +1,6 @@
 import 'package:flutter/material.dart';
 import 'package:flutter_date_time_picker/flutter_date_time_picker.dart';
+import 'package:flutter_date_time_picker/src/utils/date_time_picker_config.dart';
 import 'package:flutter_date_time_picker/src/widgets/overlay_date_time_picker/overlay.dart';
 
 class DateTimePicker extends StatefulWidget {
@@ -91,13 +92,6 @@ class DateTimePicker extends StatefulWidget {
 class _DateTimePickerState extends State<DateTimePicker> {
   late final DateTimePickerController _dateTimePickerController =
       DateTimePickerController(
-    highlightToday: widget.highlightToday,
-    alwaysUse24HourFormat: widget.alwaysUse24HourFormat,
-    pickTime: widget.pickTime,
-    theme: widget.theme,
-    markedDates: widget.markedDates,
-    disabledDates: widget.disabledDates,
-    disabledTimes: widget.disabledTimes,
     onTapDayCallBack: (date) {
       widget.onTapDay?.call(date);
       if (widget.closeOnSelectDate) {
@@ -106,6 +100,16 @@ class _DateTimePickerState extends State<DateTimePicker> {
     },
     initialDate: widget.initialDate ?? DateTime.now(),
   );
+  late final _dateTimePickerConfiguration = DateTimePickerConfiguration(
+    highlightToday: widget.highlightToday,
+    alwaysUse24HourFormat: widget.alwaysUse24HourFormat,
+    pickTime: widget.pickTime,
+    theme: widget.theme,
+    markedDates: widget.markedDates,
+    disabledDates: widget.disabledDates,
+    disabledTimes: widget.disabledTimes,
+  );
+
   @override
   Widget build(BuildContext context) {
     var size = MediaQuery.of(context).size;
@@ -147,6 +151,7 @@ class _DateTimePickerState extends State<DateTimePicker> {
             weekdayTextStyle: widget.weekdayTextStyle,
             size: widget.size ?? Size(size.width, size.height),
             controller: _dateTimePickerController,
+            configuration: _dateTimePickerConfiguration,
             showWeekDays: true,
             onNextDate: nextDate,
             onPreviousDate: previousDate,

lib/src/widgets/month_date_time_picker/month_date_time_picker.dart

@@ -8,6 +8,7 @@ import 'package:flutter_date_time_picker/src/extensions/date_time.dart';
 import 'package:flutter_date_time_picker/src/extensions/time_of_day.dart';
 import 'package:flutter_date_time_picker/src/models/date_box_current_theme.dart';
 import 'package:flutter_date_time_picker/src/models/date_time_picker_theme.dart';
+import 'package:flutter_date_time_picker/src/utils/date_time_picker_config.dart';
 import 'package:flutter_date_time_picker/src/utils/date_time_picker_controller.dart';
 import 'package:flutter_date_time_picker/src/widgets/marked_icon.dart';
 import 'package:intl/intl.dart';
@@ -17,11 +18,13 @@ class MonthDateTimePicker extends StatelessWidget {
     required this.date,
     required this.dateTimePickerController,
     required this.monthDateBoxSize,
+    required this.dateTimePickerConfiguration,
     Key? key,
   }) : super(key: key);
 
   final DateTime date;
   final DateTimePickerController dateTimePickerController;
+  final DateTimePickerConfiguration dateTimePickerConfiguration;
   final double monthDateBoxSize;
 
   @override
@@ -39,7 +42,7 @@ class MonthDateTimePicker extends StatelessWidget {
       child: Center(
         child: Column(
           children: [
-            if (dateTimePickerController.theme.monthWeekDayHeaders)
+            if (dateTimePickerConfiguration.theme.monthWeekDayHeaders)
               Row(
                 children: List.generate(
                   7,
@@ -51,8 +54,8 @@ class MonthDateTimePicker extends StatelessWidget {
                               date.daysOfWeek().elementAt(index),
                             )
                             .toUpperCase()[0],
-                        style:
+                        style: dateTimePickerConfiguration
-                            dateTimePickerController.theme.baseTheme.textStyle,
+                            .theme.baseTheme.textStyle,
                       ),
                     ),
                   ),
@@ -79,8 +82,11 @@ class MonthDateTimePicker extends StatelessWidget {
                       return const SizedBox.shrink();
                     }
 
-                    currentDateBoxTheme = determineCurrentDateBoxTheme(context,
+                    currentDateBoxTheme = determineCurrentDateBoxTheme(
-                        addedIndex, daysToSkip, dateTimePickerController.theme);
+                        context,
+                        addedIndex,
+                        daysToSkip,
+                        dateTimePickerConfiguration.theme);
 
                     return GestureDetector(
                       onTap: isDisabled(
@@ -99,23 +105,24 @@ class MonthDateTimePicker extends StatelessWidget {
 
                               timeOfDay = const TimeOfDay(hour: 0, minute: 0);
 
-                              if (dateTimePickerController.pickTime) {
+                              if (dateTimePickerConfiguration.pickTime) {
                                 timeOfDay = await displayTimePicker(
-                                    context, dateTimePickerController);
+                                    context, dateTimePickerConfiguration);
                               }
 
-                              if (dateTimePickerController.wrongTimeDialog !=
+                              if (dateTimePickerConfiguration.wrongTimeDialog !=
                                   null) {
                                 if (timeOfDay != null &&
                                     timeOfDay.containsAny(
-                                      dateTimePickerController.disabledTimes ??
+                                      dateTimePickerConfiguration
+                                              .disabledTimes ??
                                           [],
                                     )) {
                                   if (context.mounted) {
                                     showDialog(
                                       context: context,
                                       builder: (context) =>
-                                          dateTimePickerController
+                                          dateTimePickerConfiguration
                                               .wrongTimeDialog!,
                                     );
                                   }
@@ -138,8 +145,8 @@ class MonthDateTimePicker extends StatelessWidget {
                             vertical: 5, horizontal: 5),
                         decoration: BoxDecoration(
                           color: currentDateBoxTheme.backgroundColor,
-                          borderRadius:
+                          borderRadius: _determineBorderRadius(
-                              _determineBorderRadius(dateTimePickerController),
+                              dateTimePickerConfiguration),
                         ),
                         height: monthDateBoxSize,
                         width: monthDateBoxSize,
@@ -157,7 +164,7 @@ class MonthDateTimePicker extends StatelessWidget {
                               MarkedIcon(
                                 width: monthDateBoxSize / 4,
                                 height: monthDateBoxSize / 4,
-                                color: dateTimePickerController
+                                color: dateTimePickerConfiguration
                                     .theme.markedIndicatorColor,
                               ),
                             ],
@@ -181,7 +188,7 @@ class MonthDateTimePicker extends StatelessWidget {
       date.month,
       index + 1 - daysToSkip,
     ).equals(
-      dateTimePickerController.highlightToday
+      dateTimePickerConfiguration.highlightToday
           ? DateTime.now()
           : dateTimePickerController.selectedDate,
     );
@@ -228,7 +235,7 @@ class MonthDateTimePicker extends StatelessWidget {
       date.month,
       index + 1 - daysToSkip,
     ).containsAny(
-      dateTimePickerController.disabledDates ?? [],
+      dateTimePickerConfiguration.disabledDates ?? [],
     );
   }
 
@@ -246,7 +253,7 @@ class MonthDateTimePicker extends StatelessWidget {
           date.month,
           index + 1 - daysToSkip,
         ).equals(
-          dateTimePickerController.highlightToday
+          dateTimePickerConfiguration.highlightToday
               ? DateTime.now()
               : dateTimePickerController.selectedDate,
         ) &&
@@ -255,13 +262,13 @@ class MonthDateTimePicker extends StatelessWidget {
           date.month,
           index + 1 - daysToSkip,
         ).containsAny(
-          dateTimePickerController.markedDates ?? [],
+          dateTimePickerConfiguration.markedDates ?? [],
         );
   }
 
   BorderRadius _determineBorderRadius(
-      DateTimePickerController dateTimePickerController) {
+      DateTimePickerConfiguration dateTimePickerConfiguration) {
-    switch (dateTimePickerController.theme.dateBoxShape) {
+    switch (dateTimePickerConfiguration.theme.dateBoxShape) {
       case DateBoxShape.circle:
         return BorderRadius.circular(monthDateBoxSize * 2);
       case DateBoxShape.rectangle:
@@ -273,7 +280,7 @@ class MonthDateTimePicker extends StatelessWidget {
 }
 
 displayTimePicker(BuildContext context,
-    DateTimePickerController dateTimePickerController) async {
+    DateTimePickerConfiguration dateTimePickerConfiguration) async {
   return await showTimePicker(
       context: context,
       initialTime: TimeOfDay.now(),
@@ -281,7 +288,7 @@ displayTimePicker(BuildContext context,
         return MediaQuery(
           data: MediaQuery.of(context).copyWith(
               alwaysUse24HourFormat:
-                  dateTimePickerController.alwaysUse24HourFormat),
+                  dateTimePickerConfiguration.alwaysUse24HourFormat),
           child: child!,
         );
       });

lib/src/widgets/month_date_time_picker/month_date_time_picker_sheet.dart

@@ -4,6 +4,7 @@
 
 import 'package:flutter/material.dart';
 import 'package:flutter_date_time_picker/src/extensions/date_time.dart';
+import 'package:flutter_date_time_picker/src/utils/date_time_picker_config.dart';
 import 'package:flutter_date_time_picker/src/utils/date_time_picker_controller.dart';
 import 'package:flutter_date_time_picker/src/widgets/month_date_time_picker/month_date_time_picker.dart';
 import 'package:intl/intl.dart';
@@ -11,26 +12,28 @@ import 'package:intl/intl.dart';
 class MonthDateTimePickerSheet extends StatelessWidget {
   const MonthDateTimePickerSheet({
     required this.dateTimePickerController,
+    required this.dateTimePickerConfiguration,
     required this.monthDateBoxSize,
     required this.monthDatePadding,
     super.key,
   });
 
   final DateTimePickerController dateTimePickerController;
+  final DateTimePickerConfiguration dateTimePickerConfiguration;
   final double monthDateBoxSize;
   final EdgeInsetsGeometry monthDatePadding;
 
   @override
   Widget build(BuildContext context) {
-    var theme = dateTimePickerController.theme;
+    var theme = dateTimePickerConfiguration.theme;
     var size = MediaQuery.of(context).size;
 
     return Column(
       children: [
-        if (dateTimePickerController.header != null) ...[
+        if (dateTimePickerConfiguration.header != null) ...[
           Align(
             alignment: Alignment.topCenter,
-            child: dateTimePickerController.header!,
+            child: dateTimePickerConfiguration.header!,
           ),
         ],
         Padding(
@@ -80,7 +83,9 @@ class MonthDateTimePickerSheet extends StatelessWidget {
                     : DateTime(dateTimePickerController.browsingDate.year,
                         dateTimePickerController.browsingDate.month - 1, 1),
                 monthDateBoxSize: monthDateBoxSize,
-                  dateTimePickerController: dateTimePickerController),
+                dateTimePickerController: dateTimePickerController,
+                dateTimePickerConfiguration: dateTimePickerConfiguration,
+              ),
               MonthDateTimePicker(
                   date: DateTime(
                     dateTimePickerController.browsingDate.year,
@@ -88,6 +93,7 @@ class MonthDateTimePickerSheet extends StatelessWidget {
                     1,
                   ),
                   dateTimePickerController: dateTimePickerController,
+                  dateTimePickerConfiguration: dateTimePickerConfiguration,
                   monthDateBoxSize: monthDateBoxSize),
               MonthDateTimePicker(
                   date: dateTimePickerController.browsingDate.month == 12
@@ -99,6 +105,7 @@ class MonthDateTimePickerSheet extends StatelessWidget {
                       : DateTime(dateTimePickerController.browsingDate.year,
                           dateTimePickerController.browsingDate.month + 1, 1),
                   dateTimePickerController: dateTimePickerController,
+                  dateTimePickerConfiguration: dateTimePickerConfiguration,
                   monthDateBoxSize: monthDateBoxSize),
             ],
           ),

lib/src/widgets/overlay_date_time_picker/date_picker.dart

@@ -5,6 +5,7 @@
 import 'package:flutter/material.dart';
 import 'package:flutter_date_time_picker/flutter_date_time_picker.dart';
 import 'package:flutter_date_time_picker/src/extensions/date_time.dart';
+import 'package:flutter_date_time_picker/src/utils/date_time_picker_config.dart';
 import 'package:flutter_date_time_picker/src/widgets/overlay_date_time_picker/pickable_date.dart';
 import 'package:intl/intl.dart';
 
@@ -12,6 +13,7 @@ class DatePicker extends StatelessWidget {
   const DatePicker({
     super.key,
     required this.controller,
+    required this.configuration,
     required this.theme,
     required this.weekdayTextStyle,
     required this.onSelectDate,
@@ -21,6 +23,7 @@ class DatePicker extends StatelessWidget {
   });
 
   final DateTimePickerController controller;
+  final DateTimePickerConfiguration configuration;
   final DateTimePickerTheme theme;
   final TextStyle weekdayTextStyle;
   final void Function(DateTime date) onSelectDate;
@@ -94,7 +97,7 @@ class DatePicker extends StatelessWidget {
                 return Padding(
                   padding: const EdgeInsets.all(2.0),
                   child: PickableDate(
-                    isMarked: controller.markedDates?.any(
+                    isMarked: configuration.markedDates?.any(
                           (e) => isSameDay(e, todayDate),
                         ) ??
                         false,
@@ -102,7 +105,7 @@ class DatePicker extends StatelessWidget {
                     isDisabled:
                         isDisabled(addedIndex + index, daysToSkip, todayDate),
                     isSelected: controller.selectedDate == todayDate,
-                    isToday: isToday(todayDate) && controller.highlightToday,
+                    isToday: isToday(todayDate) && configuration.highlightToday,
                     theme: theme,
                     date: todayDate,
                     onPressed: onSelectDate,
@@ -130,7 +133,7 @@ class DatePicker extends StatelessWidget {
           date.month,
           index + 1 - daysToSkip,
         ).containsAny(
-          controller.disabledDates ?? [],
+          configuration.disabledDates ?? [],
         ) ||
         !dateTimeConstraint.inRange(date);
   }

lib/src/widgets/overlay_date_time_picker/overlay.dart

@@ -4,6 +4,7 @@
 
 import 'package:flutter/material.dart';
 import 'package:flutter_date_time_picker/src/models/date_time_picker_theme.dart';
+import 'package:flutter_date_time_picker/src/utils/date_time_picker_config.dart';
 import 'package:flutter_date_time_picker/src/utils/date_time_picker_controller.dart';
 import 'package:flutter_date_time_picker/src/utils/locking_page_scroll_physics.dart';
 import 'package:flutter_date_time_picker/src/widgets/overlay_date_time_picker/date_picker.dart';
@@ -17,6 +18,7 @@ class OverlayDateTimeContent extends StatefulWidget {
     required this.weekdayTextStyle,
     required this.size,
     required this.controller,
+    required this.configuration,
     required this.showWeekDays,
     required this.onNextDate,
     required this.onPreviousDate,
@@ -29,6 +31,7 @@ class OverlayDateTimeContent extends StatefulWidget {
   final TextStyle weekdayTextStyle;
   final Size size;
   final DateTimePickerController controller;
+  final DateTimePickerConfiguration configuration;
   final bool showWeekDays;
   final DateTimeConstraint dateTimeConstraint;
 
@@ -149,6 +152,7 @@ class _OverlayDateTimeContentState extends State<OverlayDateTimeContent> {
             children: [
               DatePicker(
                 controller: widget.controller,
+                configuration: widget.configuration,
                 onSelectDate: _onSelectDate,
                 theme: widget.theme,
                 weekdayTextStyle: widget.weekdayTextStyle,
@@ -158,6 +162,7 @@ class _OverlayDateTimeContentState extends State<OverlayDateTimeContent> {
               ),
               DatePicker(
                 controller: widget.controller,
+                configuration: widget.configuration,
                 onSelectDate: _onSelectDate,
                 theme: widget.theme,
                 weekdayTextStyle: widget.weekdayTextStyle,
@@ -167,6 +172,7 @@ class _OverlayDateTimeContentState extends State<OverlayDateTimeContent> {
               ),
               DatePicker(
                 controller: widget.controller,
+                configuration: widget.configuration,
                 onSelectDate: _onSelectDate,
                 theme: widget.theme,
                 weekdayTextStyle: widget.weekdayTextStyle,

lib/src/widgets/week_date_time_picker/week_date_time_picker.dart

@@ -7,18 +7,21 @@ import 'package:flutter_date_time_picker/flutter_date_time_picker.dart';
 import 'package:flutter_date_time_picker/src/extensions/date_time.dart';
 import 'package:flutter_date_time_picker/src/extensions/time_of_day.dart';
 import 'package:flutter_date_time_picker/src/models/date_box_current_theme.dart';
+import 'package:flutter_date_time_picker/src/utils/date_time_picker_config.dart';
 import 'package:flutter_date_time_picker/src/widgets/marked_icon.dart';
 import 'package:intl/intl.dart';
 
 class WeekDateTimePicker extends StatelessWidget {
   const WeekDateTimePicker({
     required this.dateTimePickerController,
+    required this.dateTimePickerConfiguration,
     required this.date,
     required this.weekDateBoxSize,
     Key? key,
   }) : super(key: key);
 
   final DateTimePickerController dateTimePickerController;
+  final DateTimePickerConfiguration dateTimePickerConfiguration;
 
   final DateTime date;
 
@@ -34,7 +37,7 @@ class WeekDateTimePicker extends StatelessWidget {
           late DateBoxCurrentTheme currentDateBoxTheme;
 
           currentDateBoxTheme = determineCurrentDateBoxTheme(
-              context, index, dateTimePickerController.theme);
+              context, index, dateTimePickerConfiguration.theme);
           return GestureDetector(
             onTap: isDisabled(
               index,
@@ -47,21 +50,21 @@ class WeekDateTimePicker extends StatelessWidget {
 
                     timeOfDay = const TimeOfDay(hour: 0, minute: 0);
 
-                    if (dateTimePickerController.pickTime) {
+                    if (dateTimePickerConfiguration.pickTime) {
                       timeOfDay = await displayTimePicker(
                           context, dateTimePickerController);
                     }
 
-                    if (dateTimePickerController.wrongTimeDialog != null) {
+                    if (dateTimePickerConfiguration.wrongTimeDialog != null) {
                       if (timeOfDay != null &&
                           timeOfDay.containsAny(
-                            dateTimePickerController.disabledTimes ?? [],
+                            dateTimePickerConfiguration.disabledTimes ?? [],
                           )) {
                         if (context.mounted) {
                           showDialog(
                             context: context,
                             builder: (context) =>
-                                dateTimePickerController.wrongTimeDialog!,
+                                dateTimePickerConfiguration.wrongTimeDialog!,
                           );
                         }
                       }
@@ -89,7 +92,7 @@ class WeekDateTimePicker extends StatelessWidget {
                           date.daysOfWeek().elementAt(index),
                         )
                         .toUpperCase()[0],
-                    style: dateTimePickerController.theme.baseTheme.textStyle,
+                    style: dateTimePickerConfiguration.theme.baseTheme.textStyle,
                   ),
                   const Spacer(),
                   Container(
@@ -98,7 +101,7 @@ class WeekDateTimePicker extends StatelessWidget {
                     decoration: BoxDecoration(
                       color: currentDateBoxTheme.backgroundColor,
                       borderRadius:
-                          _determineBorderRadius(dateTimePickerController),
+                          _determineBorderRadius(dateTimePickerConfiguration),
                     ),
                     child: Stack(
                       children: [
@@ -112,7 +115,7 @@ class WeekDateTimePicker extends StatelessWidget {
                           MarkedIcon(
                             width: weekDateBoxSize / 3,
                             height: weekDateBoxSize / 3,
-                            color: dateTimePickerController
+                            color: dateTimePickerConfiguration
                                 .theme.markedIndicatorColor,
                           )
                         ],
@@ -165,7 +168,7 @@ class WeekDateTimePicker extends StatelessWidget {
 
   bool shouldHighlight(int index) {
     return date.daysOfWeek().elementAt(index).equals(
-          dateTimePickerController.highlightToday
+          dateTimePickerConfiguration.highlightToday
               ? DateTime.now()
               : dateTimePickerController.selectedDate,
         );
@@ -182,24 +185,24 @@ class WeekDateTimePicker extends StatelessWidget {
     return date
         .daysOfWeek()
         .elementAt(index)
-        .containsAny(dateTimePickerController.disabledDates ?? []);
+        .containsAny(dateTimePickerConfiguration.disabledDates ?? []);
   }
 
   bool shouldMark(int index) {
     return !date.daysOfWeek().elementAt(index).equals(
-              dateTimePickerController.highlightToday
+              dateTimePickerConfiguration.highlightToday
                   ? DateTime.now()
                   : dateTimePickerController.selectedDate,
             ) &&
         date
             .daysOfWeek()
             .elementAt(index)
-            .containsAny(dateTimePickerController.markedDates ?? []);
+            .containsAny(dateTimePickerConfiguration.markedDates ?? []);
   }
 
   BorderRadius _determineBorderRadius(
-      DateTimePickerController dateTimePickerController) {
+      DateTimePickerConfiguration dateTimePickerConfiguration) {
-    switch (dateTimePickerController.theme.dateBoxShape) {
+    switch (dateTimePickerConfiguration.theme.dateBoxShape) {
       case DateBoxShape.circle:
         return BorderRadius.circular(weekDateBoxSize * 2);
       case DateBoxShape.rectangle:
@@ -218,7 +221,7 @@ class WeekDateTimePicker extends StatelessWidget {
           return MediaQuery(
             data: MediaQuery.of(context).copyWith(
                 alwaysUse24HourFormat:
-                    dateTimePickerController.alwaysUse24HourFormat),
+                    dateTimePickerConfiguration.alwaysUse24HourFormat),
             child: child!,
           );
         });

lib/src/widgets/week_date_time_picker/week_date_time_picker_sheet.dart

@@ -4,6 +4,7 @@
 
 import 'package:flutter/material.dart';
 import 'package:flutter_date_time_picker/src/extensions/date_time.dart';
+import 'package:flutter_date_time_picker/src/utils/date_time_picker_config.dart';
 import 'package:flutter_date_time_picker/src/utils/date_time_picker_controller.dart';
 import 'package:flutter_date_time_picker/src/widgets/week_date_time_picker/week_date_time_picker.dart';
 import 'package:intl/intl.dart';
@@ -11,12 +12,14 @@ import 'package:intl/intl.dart';
 class WeekDateTimePickerSheet extends StatelessWidget {
   const WeekDateTimePickerSheet({
     required this.dateTimePickerController,
+    required this.dateTimePickerConfiguration,
     required this.weekDateBoxSize,
     this.showHeader = false,
     Key? key,
   }) : super(key: key);
 
   final DateTimePickerController dateTimePickerController;
+  final DateTimePickerConfiguration dateTimePickerConfiguration;
   final bool showHeader;
   final double weekDateBoxSize;
 
@@ -36,14 +39,14 @@ class WeekDateTimePickerSheet extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
-    var theme = dateTimePickerController.theme;
+    var theme = dateTimePickerConfiguration.theme;
 
     return Column(
       children: [
-        if (dateTimePickerController.header != null)
+        if (dateTimePickerConfiguration.header != null)
           Align(
             alignment: Alignment.topCenter,
-            child: dateTimePickerController.header!,
+            child: dateTimePickerConfiguration.header!,
           ),
         const SizedBox(
           height: 10,
@@ -80,6 +83,7 @@ class WeekDateTimePickerSheet extends StatelessWidget {
             children: [
               WeekDateTimePicker(
                 dateTimePickerController: dateTimePickerController,
+                dateTimePickerConfiguration: dateTimePickerConfiguration,
                 date: dateTimePickerController.browsingDate.subtract(
                   const Duration(days: 7),
                 ),
@@ -87,11 +91,13 @@ class WeekDateTimePickerSheet extends StatelessWidget {
               ),
               WeekDateTimePicker(
                 dateTimePickerController: dateTimePickerController,
+                dateTimePickerConfiguration: dateTimePickerConfiguration,
                 date: dateTimePickerController.browsingDate,
                 weekDateBoxSize: weekDateBoxSize,
               ),
               WeekDateTimePicker(
                 dateTimePickerController: dateTimePickerController,
+                dateTimePickerConfiguration: dateTimePickerConfiguration,
                 date: dateTimePickerController.browsingDate.add(
                   const Duration(days: 7),
                 ),

test/flutter_date_time_picker_test.dart

@@ -4,6 +4,7 @@
 
 import 'package:flutter/material.dart';
 import 'package:flutter_date_time_picker/flutter_date_time_picker.dart';
+import 'package:flutter_date_time_picker/src/utils/date_time_picker_config.dart';
 import 'package:flutter_test/flutter_test.dart';
 
 void main() {
@@ -14,9 +15,11 @@ void main() {
         appBar: AppBar(),
         body: DragDownDateTimePicker(
           controller: DateTimePickerController(
+            initialDate: DateTime.now(),
+          ),
+          configuration: DateTimePickerConfiguration(
             theme: const DateTimePickerTheme(),
             highlightToday: true,
-            initialDate: DateTime.now(),
             pickTime: false,
           ),
           child: Container(),
@@ -33,9 +36,11 @@ void main() {
         appBar: AppBar(),
         body: DragDownDateTimePicker(
           controller: DateTimePickerController(
+            initialDate: DateTime.now(),
+          ),
+          configuration: DateTimePickerConfiguration(
             theme: const DateTimePickerTheme(),
             highlightToday: true,
-            initialDate: DateTime.now(),
             pickTime: false,
           ),
           child: Container(),