Added option to disable cancellation

Added Select All / Deselect All to checkbox selection

Author: PhonicCanine

Diff for: example/lib/main.dart

@@ -239,13 +239,17 @@ class _TestPageState extends State<TestPage> {
           child: ElevatedButton(
             child: const Text('Checkbox Picker'),
             onPressed: () => showMaterialCheckboxPicker<PickerModel>(
-              context: context,
-              title: 'Pick Your Toppings',
-              items: ExampleModel.iceCreamToppings,
-              selectedItems: model.selectedIceCreamToppings,
-              onChanged: (value) =>
-                  setState(() => model.selectedIceCreamToppings = value),
-            ),
+                context: context,
+                title: 'Pick Your Toppings',
+                items: ExampleModel.iceCreamToppings,
+                selectedItems: model.selectedIceCreamToppings,
+                onChanged: (value) =>
+                    setState(() => model.selectedIceCreamToppings = value),
+                selectAllConfig: SelectAllConfig(
+                  const Text('Select All'),
+                  const Text('Deselect All'),
+                ),
+                cancellable: false),
           ),
         ),
         Expanded(

Diff for: example/windows/flutter/generated_plugins.cmake

@@ -5,6 +5,9 @@
 list(APPEND FLUTTER_PLUGIN_LIST
 )
 
+list(APPEND FLUTTER_FFI_PLUGIN_LIST
+)
+
 set(PLUGIN_BUNDLED_LIBRARIES)
 
 foreach(plugin ${FLUTTER_PLUGIN_LIST})
@@ -13,3 +16,8 @@ foreach(plugin ${FLUTTER_PLUGIN_LIST})
   list(APPEND PLUGIN_BUNDLED_LIBRARIES $<TARGET_FILE:${plugin}_plugin>)
   list(APPEND PLUGIN_BUNDLED_LIBRARIES ${${plugin}_bundled_libraries})
 endforeach(plugin)
+
+foreach(ffi_plugin ${FLUTTER_FFI_PLUGIN_LIST})
+  add_subdirectory(flutter/ephemeral/.plugin_symlinks/${ffi_plugin}/windows plugins/${ffi_plugin})
+  list(APPEND PLUGIN_BUNDLED_LIBRARIES ${${ffi_plugin}_bundled_libraries})
+endforeach(ffi_plugin)

Diff for: lib/dialogs/checkbox_picker_dialog.dart

@@ -2,6 +2,7 @@
 // is governed by the MIT license that can be found in the LICENSE file.
 
 import 'package:flutter/material.dart';
+import 'package:flutter_material_pickers/models/select_all_config.dart';
 import 'package:flutter_material_pickers/pickers/checkbox_picker.dart';
 
 import '../flutter_material_pickers.dart';
@@ -12,20 +13,22 @@ import 'responsive_dialog.dart';
 /// It is designed to be used in the showDialog method of other fields.
 class CheckboxPickerDialog<T> extends StatefulWidget
     implements ICommonDialogProperties {
-  CheckboxPickerDialog({
-    this.title,
-    required this.items,
-    required this.selectedItems,
-    this.transformer,
-    this.headerColor,
-    this.headerTextColor,
-    this.backgroundColor,
-    this.buttonTextColor,
-    this.maxLongSide,
-    this.maxShortSide,
-    this.confirmText,
-    this.cancelText,
-  });
+  CheckboxPickerDialog(
+      {this.title,
+      required this.items,
+      required this.selectedItems,
+      this.transformer,
+      this.headerColor,
+      this.headerTextColor,
+      this.backgroundColor,
+      this.buttonTextColor,
+      this.maxLongSide,
+      this.maxShortSide,
+      this.confirmText,
+      this.cancelButtonVisible = true,
+      this.cancelText,
+      this.onSelectionChanged,
+      this.selectAllConfig});
 
   // Variables
   final List<T> items;
@@ -49,6 +52,9 @@ class CheckboxPickerDialog<T> extends StatefulWidget
   final String? confirmText;
   @override
   final String? cancelText;
+  final ValueChanged<List<T>>? onSelectionChanged;
+  final SelectAllConfig? selectAllConfig;
+  final bool cancelButtonVisible;
 
   @override
   State<CheckboxPickerDialog> createState() =>
@@ -78,10 +84,13 @@ class _CheckboxPickerDialogState<T> extends State<CheckboxPickerDialog<T>> {
       maxShortSide: widget.maxLongSide,
       confirmText: widget.confirmText,
       cancelText: widget.cancelText,
+      cancelButtonVisible: widget.cancelButtonVisible,
       child: CheckboxPicker<T>(
         items: widget.items,
         selectedItems: selectedItems,
         transformer: widget.transformer,
+        onSelectionChanged: widget.onSelectionChanged,
+        selectAllConfig: widget.selectAllConfig,
       ),
       okPressed: () => Navigator.of(context).pop(selectedItems),
     );

Diff for: lib/dialogs/radio_picker_dialog.dart

@@ -25,6 +25,7 @@ class RadioPickerDialog<T> extends StatefulWidget
     this.maxShortSide,
     this.confirmText,
     this.cancelText,
+    this.cancelButtonVisible = true,
   });
 
   // Variables
@@ -49,6 +50,7 @@ class RadioPickerDialog<T> extends StatefulWidget
   final String? confirmText;
   @override
   final String? cancelText;
+  final bool cancelButtonVisible;
 
   @override
   State<RadioPickerDialog> createState() =>
@@ -73,6 +75,7 @@ class _RadioPickerDialogState<T> extends State<RadioPickerDialog<T>> {
       maxShortSide: widget.maxLongSide,
       confirmText: widget.confirmText,
       cancelText: widget.cancelText,
+      cancelButtonVisible: widget.cancelButtonVisible,
       child: RadioPicker<T>(
         items: widget.items,
         initialValue: selectedItem,

Diff for: lib/dialogs/responsive_dialog.dart

@@ -28,6 +28,7 @@ class ResponsiveDialog extends StatefulWidget
     this.cancelPressed,
     this.confirmText,
     this.cancelText,
+    this.cancelButtonVisible = true,
   })  : title = title ?? "Title Here",
         child = child ?? Text("Content Here"),
         maxLongSide = maxLongSide ?? 600,
@@ -56,6 +57,7 @@ class ResponsiveDialog extends StatefulWidget
   final String? confirmText;
   @override
   final String? cancelText;
+  final bool cancelButtonVisible;
 
   // Events
   final VoidCallback? cancelPressed;
@@ -108,15 +110,17 @@ class _ResponsiveDialogState extends State<ResponsiveDialog> {
         ),
         child: ButtonBar(
           children: <Widget>[
-            TextButton(
-              child: Text(
-                widget.cancelText ?? localizations.cancelButtonLabel,
-                style: TextStyle(color: _buttonTextColor),
-              ),
-              onPressed: () => (widget.cancelPressed == null)
-                  ? Navigator.of(context).pop()
-                  : widget.cancelPressed!(),
-            ),
+            widget.cancelButtonVisible
+                ? TextButton(
+                    child: Text(
+                      widget.cancelText ?? localizations.cancelButtonLabel,
+                      style: TextStyle(color: _buttonTextColor),
+                    ),
+                    onPressed: () => (widget.cancelPressed == null)
+                        ? Navigator.of(context).pop()
+                        : widget.cancelPressed!(),
+                  )
+                : Container(),
             TextButton(
               child: Text(
                 widget.confirmText ?? localizations.okButtonLabel,

Diff for: lib/dialogs/scroll_picker_dialog.dart

@@ -26,6 +26,7 @@ class ScrollPickerDialog<T> extends StatefulWidget
     this.showDivider: true,
     this.confirmText,
     this.cancelText,
+    this.cancelButtonVisible = true,
   });
 
   // Variables
@@ -50,6 +51,7 @@ class ScrollPickerDialog<T> extends StatefulWidget
   final String? confirmText;
   @override
   final String? cancelText;
+  final bool cancelButtonVisible;
 
   final bool showDivider;
 
@@ -76,6 +78,7 @@ class _ScrollPickerDialogState<T> extends State<ScrollPickerDialog<T>> {
       maxShortSide: widget.maxLongSide,
       confirmText: widget.confirmText,
       cancelText: widget.cancelText,
+      cancelButtonVisible: widget.cancelButtonVisible,
       child: ScrollPicker<T>(
         items: widget.items,
         selectedItem: selectedItem,

Diff for: lib/dialogs/selection_picker_dialog.dart

@@ -26,6 +26,7 @@ class SelectionPickerDialog<T> extends StatefulWidget
     this.maxShortSide,
     this.confirmText,
     this.cancelText,
+    this.cancelButtonVisible = true,
   });
 
   final List<T> items;
@@ -50,6 +51,7 @@ class SelectionPickerDialog<T> extends StatefulWidget
   final String? confirmText;
   @override
   final String? cancelText;
+  final bool cancelButtonVisible;
 
   @override
   State<SelectionPickerDialog> createState() =>
@@ -74,6 +76,7 @@ class _SelectionPickerDialogState<T> extends State<SelectionPickerDialog<T>> {
       maxShortSide: widget.maxLongSide,
       confirmText: widget.confirmText,
       cancelText: widget.cancelText,
+      cancelButtonVisible: widget.cancelButtonVisible,
       child: SelectionPicker<T>(
         items: widget.items,
         initialValue: selectedItem,

Diff for: lib/flutter_material_pickers.dart

@@ -18,6 +18,7 @@ export 'package:flutter_material_pickers/helpers/show_responsive_dialog.dart';
 
 /// Models
 export 'package:flutter_material_pickers/models/picker_model.dart';
+export 'package:flutter_material_pickers/models/select_all_config.dart';
 
 /// Helpers
 export 'package:flutter_material_pickers/helpers/show_scroll_picker.dart';

Diff for: lib/helpers/show_checkbox_picker.dart

@@ -3,6 +3,7 @@
 
 import 'package:flutter/material.dart';
 import 'package:flutter_material_pickers/dialogs/checkbox_picker_dialog.dart';
+import 'package:flutter_material_pickers/models/select_all_config.dart';
 
 import '../flutter_material_pickers.dart';
 
@@ -34,6 +35,9 @@ Future<List<T>?> showMaterialCheckboxPicker<T>({
   /// Text to display in the confirm button
   String? confirmText,
 
+  /// Whether to display a cancel button
+  bool cancellable = true,
+
   /// Text to display in the cancel button
   String? cancelText,
 
@@ -46,6 +50,12 @@ Future<List<T>?> showMaterialCheckboxPicker<T>({
   /// Function that gets called when the value is changed
   ValueChanged<List<T>>? onChanged,
 
+  /// Function that gets called each time the selection changes
+  ValueChanged<List<T>>? onSelectionChanged,
+
+  /// If enabled, adds a Select All / Deselect All button at the top
+  SelectAllConfig? selectAllConfig,
+
   /// Function that gets called when the confirm button is pressed
   VoidCallback? onConfirmed,
 
@@ -58,6 +68,7 @@ Future<List<T>?> showMaterialCheckboxPicker<T>({
 }) {
   return showDialog<List<T>>(
     context: context,
+    barrierDismissible: cancellable,
     builder: (BuildContext context) {
       return CheckboxPickerDialog<T>(
         title: title,
@@ -72,6 +83,9 @@ Future<List<T>?> showMaterialCheckboxPicker<T>({
         maxLongSide: maxLongSide,
         maxShortSide: maxLongSide,
         transformer: transformer,
+        onSelectionChanged: onSelectionChanged,
+        selectAllConfig: selectAllConfig,
+        cancelButtonVisible: cancellable,
       );
     },
   ).then((selection) {

Diff for: lib/helpers/show_color_picker.dart

@@ -45,11 +45,15 @@ Future<Color?> showMaterialColorPicker({
   /// Function that gets called when the confirm button is pressed
   VoidCallback? onConfirmed,
 
+  /// Whether to display a cancel button
+  bool cancellable = true,
+
   /// Function that gets called when the cancel button is pressed
   VoidCallback? onCancelled,
 }) {
   return showDialog<Color>(
     context: context,
+    barrierDismissible: cancellable,
     builder: (BuildContext context) {
       return OrientationBuilder(
         builder: (context, orientation) {
@@ -65,6 +69,7 @@ Future<Color?> showMaterialColorPicker({
             maxLongSide: maxLongSide,
             maxShortSide: maxLongSide,
             forcePortrait: true,
+            cancelButtonVisible: cancellable,
             child: SingleChildScrollView(
               child: ColorPicker(
                 pickerColor: selectedColor,

Diff for: lib/helpers/show_date_picker.dart

@@ -35,6 +35,9 @@ Future<DateTime?> showMaterialDatePicker({
   /// Text to display in the confirm button
   String? confirmText,
 
+  /// Whether to display a cancel button
+  bool cancellable = true,
+
   /// Text to display in the cancel button
   String? cancelText,
 
@@ -55,6 +58,7 @@ Future<DateTime?> showMaterialDatePicker({
 }) {
   return showDialog<DateTime>(
     context: context,
+    barrierDismissible: cancellable,
     builder: (BuildContext context) {
       return OrientationBuilder(
         builder: (context, orientation) {
@@ -69,6 +73,7 @@ Future<DateTime?> showMaterialDatePicker({
             cancelText: cancelText,
             maxLongSide: maxLongSide,
             maxShortSide: maxLongSide,
+            cancelButtonVisible: cancellable,
             child: SingleChildScrollView(
               child: CalendarDatePicker(
                 initialDate: selectedDate,

Diff for: lib/helpers/show_number_picker.dart

@@ -40,6 +40,9 @@ Future<int?> showMaterialNumberPicker({
   /// Text to display in the confirm button
   String? confirmText,
 
+  /// Whether to display a cancel button
+  bool cancellable = true,
+
   /// Text to display in the cancel button
   String? cancelText,
 
@@ -70,6 +73,7 @@ Future<int?> showMaterialNumberPicker({
 
   return showDialog<int>(
     context: context,
+    barrierDismissible: cancellable,
     builder: (BuildContext context) {
       return ScrollPickerDialog<int>(
         items: items,
@@ -81,6 +85,7 @@ Future<int?> showMaterialNumberPicker({
         buttonTextColor: buttonTextColor,
         confirmText: confirmText,
         cancelText: cancelText,
+        cancelButtonVisible: cancellable,
         maxLongSide: maxLongSide,
         maxShortSide: maxLongSide,
       );

Diff for: lib/helpers/show_palette_picker.dart

@@ -30,6 +30,9 @@ Future<Color?> showMaterialPalettePicker({
   /// Text to display in the confirm button
   String? confirmText,
 
+  /// Whether to display a cancel button
+  bool cancellable = true,
+
   /// Text to display in the cancel button
   String? cancelText,
 
@@ -50,6 +53,7 @@ Future<Color?> showMaterialPalettePicker({
 }) {
   return showDialog<Color>(
     context: context,
+    barrierDismissible: cancellable,
     builder: (BuildContext context) {
       return OrientationBuilder(
         builder: (context, orientation) {