Value setting Stateful toolbar buttons derive from base class

lib/src/controller/quill_controller.dart

@@ -81,6 +81,49 @@ 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;