Value setting Stateful toolbar buttons derive from base class

lib/src/widgets/quill/quill_controller.dart

@@ -72,6 +72,49 @@ class QuillController extends ChangeNotifier {
     notifyListeners();
   }
 
+  // Those are the values that the user selects and not the one
+  // from the current line
+
+  /// The current font family, null to use the default one
+  @Deprecated('No longer used')
+  MapEntry<String, String>? _selectedFontFamily;
+
+  /// The current font family, null to use the default one
+  @Deprecated('No longer used')
+  MapEntry<String, String>? get selectedFontFamily => _selectedFontFamily;
+
+  @Deprecated('No longer used')
+  void selectFontFamily(MapEntry<String, String>? newFontFamily) {
+    _selectedFontFamily = newFontFamily;
+  }
+
+  /// The current font size, null to use the default one
+  @Deprecated('No longer used')
+  MapEntry<String, String>? _selectedFontSize;
+
+  /// The current font size, null to use the default one
+  @Deprecated('No longer used')
+  MapEntry<String, String>? get selectedFontSize => _selectedFontSize;
+
+  @Deprecated('No longer used')
+  void selectFontSize(MapEntry<String, String>? newFontSize) {
+    _selectedFontSize = newFontSize;
+  }
+
+  /// For the [QuillToolbarToggleStyleButton]
+  @Deprecated('No longer used')
+  final Map<Attribute, bool?> _selectedStyles = {};
+
+  /// For the [QuillToolbarToggleStyleButton]
+  @Deprecated('No longer used')
+  Map<Attribute, bool?> get selectedStyles => _selectedStyles;
+
+  /// For the [QuillToolbarToggleStyleButton]
+  @Deprecated('No longer used')
+  void selectStyle(Attribute attribute, bool value) {
+    _selectedStyles[attribute] = value;
+  }
+
   /// Tells whether to keep or reset the [toggledStyle]
   /// when user adds a new line.
   final bool keepStyleOnNewLine;

lib/src/widgets/toolbar/base_button/stateful_base_button_ex.dart

@@ -0,0 +1,83 @@
+import 'package:flutter/cupertino.dart';
+import 'package:flutter/material.dart';
+
+import '../../../../flutter_quill.dart';
+
+/// The [T] is the options for the button
+/// The [E] is the extra options for the button
+abstract class QuillToolbarStatefulBaseButton<
+    T extends QuillToolbarBaseButtonOptions<T, E>,
+    E extends QuillToolbarBaseButtonExtraOptions> extends StatefulWidget {
+  const QuillToolbarStatefulBaseButton(
+      {required this.controller, required this.options, super.key});
+
+  final T options;
+
+  final QuillController controller;
+}
+
+/// The [W] is the widget that creates this State
+abstract class QuillToolbarBaseButtonState<
+    W extends QuillToolbarStatefulBaseButton<T, E>,
+    T extends QuillToolbarBaseButtonOptions<T, E>,
+    E extends QuillToolbarBaseButtonExtraOptions> extends State<W> {
+  T get options => widget.options;
+
+  QuillController get controller => widget.controller;
+
+  @override
+  void initState() {
+    super.initState();
+    controller.addListener(didChangeEditingValue);
+  }
+
+  void didChangeEditingValue();
+
+  @override
+  void dispose() {
+    controller.removeListener(didChangeEditingValue);
+    super.dispose();
+  }
+
+  @override
+  void didUpdateWidget(covariant W oldWidget) {
+    super.didUpdateWidget(oldWidget);
+    if (oldWidget.controller != controller) {
+      oldWidget.controller.removeListener(didChangeEditingValue);
+      controller.addListener(didChangeEditingValue);
+    }
+  }
+
+  String get defaultTooltip;
+
+  String get tooltip {
+    return options.tooltip ??
+        context.quillToolbarBaseButtonOptions?.tooltip ??
+        defaultTooltip;
+  }
+
+  double get iconSize {
+    final baseFontSize = context.quillToolbarBaseButtonOptions?.iconSize;
+    final iconSize = options.iconSize;
+    return iconSize ?? baseFontSize ?? kDefaultIconSize;
+  }
+
+  double get iconButtonFactor {
+    final baseIconFactor = baseButtonExtraOptions?.iconButtonFactor;
+    final iconButtonFactor = options.iconButtonFactor;
+    return iconButtonFactor ?? baseIconFactor ?? kDefaultIconButtonFactor;
+  }
+
+  QuillIconTheme? get iconTheme {
+    return options.iconTheme ?? baseButtonExtraOptions?.iconTheme;
+  }
+
+  QuillToolbarBaseButtonOptions? get baseButtonExtraOptions {
+    return context.quillToolbarBaseButtonOptions;
+  }
+
+  VoidCallback? get afterButtonPressed {
+    return options.afterButtonPressed ??
+        baseButtonExtraOptions?.afterButtonPressed;
+  }
+}