Fix FontFamily and Size button actions

lib/src/widgets/quill/quill_controller.dart

@@ -14,7 +14,6 @@ import '../../models/structs/doc_change.dart';
 import '../../models/structs/image_url.dart';
 import '../../models/structs/offset_value.dart';
 import '../../utils/delta.dart';
-import '../toolbar/buttons/toggle_style_button.dart';
 
 typedef ReplaceTextCallback = bool Function(int index, int len, Object? data);
 typedef DeleteCallback = void Function(int cursorPosition, bool forward);
@@ -67,40 +66,6 @@ class QuillController extends ChangeNotifier {
     notifyListeners();
   }
 
-  // Thoses 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
-  MapEntry<String, String>? _selectedFontFamily;
-
-  /// The current font family, null to use the default one
-  MapEntry<String, String>? get selectedFontFamily => _selectedFontFamily;
-
-  void selectFontFamily(MapEntry<String, String>? newFontFamily) {
-    _selectedFontFamily = newFontFamily;
-  }
-
-  /// The current font size, null to use the default one
-  MapEntry<String, String>? _selectedFontSize;
-
-  /// The current font size, null to use the default one
-  MapEntry<String, String>? get selectedFontSize => _selectedFontSize;
-
-  void selectFontSize(MapEntry<String, String>? newFontSize) {
-    _selectedFontSize = newFontSize;
-  }
-
-  /// For the [QuillToolbarToggleStyleButton]
-  final Map<Attribute, bool?> _selectedStyles = {};
-
-  /// For the [QuillToolbarToggleStyleButton]
-  Map<Attribute, bool?> get selectedStyles => _selectedStyles;
-
-  /// For the [QuillToolbarToggleStyleButton]
-  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/buttons/font_family_button.dart

@@ -67,12 +67,10 @@ class QuillToolbarFontFamilyButtonState
    @override
    void didUpdateWidget(covariant QuillToolbarFontFamilyButton oldWidget) {
      super.didUpdateWidget(oldWidget);
-     if (oldWidget.controller == controller) {
-       return;
+     if (oldWidget.controller != controller) {
+       oldWidget.controller.removeListener(_didChangeEditingValue);
+       controller.addListener(_didChangeEditingValue);
      }
-     controller
-       ..removeListener(_didChangeEditingValue)
-       ..addListener(_didChangeEditingValue);
    }
 
   @override
@@ -218,12 +216,6 @@ class QuillToolbarFontFamilyButtonState
                     options.onSelected?.call(newValue);
                   }
                 });
-
-                if (fontFamily.value == 'Clear') {
-                  controller.selectFontFamily(null);
-                  return;
-                }
-                controller.selectFontFamily(fontFamily);
                 },
               child: Text(
                 fontFamily.key.toString(),

lib/src/widgets/toolbar/buttons/font_size_button.dart

@@ -91,12 +91,10 @@ class QuillToolbarFontSizeButtonState
   @override
   void didUpdateWidget(covariant QuillToolbarFontSizeButton oldWidget) {
     super.didUpdateWidget(oldWidget);
-    if (oldWidget.controller == controller) {
-      return;
+    if (oldWidget.controller != controller) {
+      oldWidget.controller.removeListener(_didChangeEditingValue);
+      controller.addListener(_didChangeEditingValue);
     }
-    controller
-      ..removeListener(_didChangeEditingValue)
-      ..addListener(_didChangeEditingValue);
   }
 
   @override
@@ -208,12 +206,6 @@ class QuillToolbarFontSizeButtonState
                 options.onSelected?.call(newValue);
               }
             });
-
-            if (fontSize.value == '0') {
-              controller.selectFontSize(null);
-              return;
-            }
-            controller.selectFontSize(fontSize);
           },
           child: Text(
             fontSize.key.toString(),

lib/src/widgets/toolbar/buttons/toggle_style_button.dart

@@ -218,12 +218,11 @@ class QuillToolbarToggleStyleButtonState
 
   void _toggleAttribute() {
     controller
-      ..formatSelection(
+      .formatSelection(
         (_isToggled ?? false)
             ? Attribute.clone(widget.attribute, null)
             : widget.attribute,
-      )
-      ..selectStyle(widget.attribute, _isToggled ?? false);
+      );
   }
 }