Fix conflict with the exsisting solution

lib/src/widgets/quill/quill_controller.dart

@@ -1,6 +1,6 @@
 import 'dart:math' as math;
 
-import 'package:flutter/services.dart';
+import 'package:flutter/services.dart' show ClipboardData, Clipboard;
 import 'package:flutter/widgets.dart';
 import 'package:html2md/html2md.dart' as html2md;
 import 'package:markdown/markdown.dart' as md;
@@ -26,14 +26,13 @@ class QuillController extends ChangeNotifier {
   QuillController({
     required Document document,
     required TextSelection selection,
-    bool keepStyleOnNewLine = false,
+    this.keepStyleOnNewLine = true,
     this.onReplaceText,
     this.onDelete,
     this.onSelectionCompleted,
     this.onSelectionChanged,
   })  : _document = document,
-        _selection = selection,
-        _keepStyleOnNewLine = keepStyleOnNewLine;
+        _selection = selection;
 
   factory QuillController.basic() {
     return QuillController(
@@ -71,6 +70,9 @@ 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
   String? _selectedFontFamily;
 
@@ -87,6 +89,10 @@ class QuillController extends ChangeNotifier {
   /// The current font size, null to use the default one
   String? get selectedFontSize => _selectedFontSize;
 
+  void selectFontSize(String? newFontSize) {
+    _selectedFontSize = newFontSize;
+  }
+
   /// For the [QuillToolbarToggleStyleButton]
   final Map<Attribute, bool?> _selectedStyles = {};
 
@@ -98,13 +104,9 @@ class QuillController extends ChangeNotifier {
     _selectedStyles[attribute] = value;
   }
 
-  void selectFontSize(String? newFontSize) {
-    _selectedFontSize = newFontSize;
-  }
-
   /// Tells whether to keep or reset the [toggledStyle]
   /// when user adds a new line.
-  final bool _keepStyleOnNewLine;
+  final bool keepStyleOnNewLine;
 
   /// Currently selected text within the [document].
   TextSelection get selection => _selection;
@@ -283,6 +285,7 @@ class QuillController extends ChangeNotifier {
     Object? data,
     TextSelection? textSelection, {
     bool ignoreFocus = false,
+    bool shouldNotifyListeners = true,
   }) {
     assert(data is String || data is Embeddable);
 
@@ -338,7 +341,9 @@ class QuillController extends ChangeNotifier {
     if (ignoreFocus) {
       ignoreFocusOnTextChange = true;
     }
-    notifyListeners();
+    if (shouldNotifyListeners) {
+      notifyListeners();
+    }
     ignoreFocusOnTextChange = false;
   }
 
@@ -356,7 +361,12 @@ class QuillController extends ChangeNotifier {
     });
   }
 
-  void formatText(int index, int len, Attribute? attribute) {
+  void formatText(
+    int index,
+    int len,
+    Attribute? attribute, {
+    bool shouldNotifyListeners = true,
+  }) {
     if (len == 0 &&
         attribute!.isInline &&
         attribute.key != Attribute.link.key) {
@@ -375,11 +385,19 @@ class QuillController extends ChangeNotifier {
     if (selection != adjustedSelection) {
       _updateSelection(adjustedSelection, ChangeSource.local);
     }
-    notifyListeners();
+    if (shouldNotifyListeners) {
+      notifyListeners();
+    }
   }
 
-  void formatSelection(Attribute? attribute) {
-    formatText(selection.start, selection.end - selection.start, attribute);
+  void formatSelection(Attribute? attribute,
+      {bool shouldNotifyListeners = true}) {
+    formatText(
+      selection.start,
+      selection.end - selection.start,
+      attribute,
+      shouldNotifyListeners: shouldNotifyListeners,
+    );
   }
 
   void moveCursorToStart() {
@@ -461,7 +479,7 @@ class QuillController extends ChangeNotifier {
     _selection = selection.copyWith(
         baseOffset: math.min(selection.baseOffset, end),
         extentOffset: math.min(selection.extentOffset, end));
-    if (_keepStyleOnNewLine) {
+    if (keepStyleOnNewLine) {
       final style = getSelectionStyle();
       final ignoredStyles = style.attributes.values.where(
         (s) => !s.isInline || s.key == Attribute.link.key,

lib/src/widgets/raw_editor/raw_editor_state_text_input_client_mixin.dart

@@ -208,8 +208,6 @@ mixin RawEditorStateTextInputClientMixin on EditorState
         value.selection,
       );
 
-      // TODO: There is a bug here, the first character is not being formatted
-
       if (widget.configurations.controller.selectedFontFamily != null) {
         widget.configurations.controller.formatSelection(
           Attribute.fromKeyValue(
@@ -219,8 +217,6 @@ mixin RawEditorStateTextInputClientMixin on EditorState
         );
       }
 
-      // TODO: The same bug here
-
       if (widget.configurations.controller.selectedFontSize != null) {
         widget.configurations.controller.formatSelection(
           Attribute.fromKeyValue(
@@ -232,14 +228,13 @@ mixin RawEditorStateTextInputClientMixin on EditorState
           ),
         );
       }
-
-      // TODO: The same bug here
-
-      widget.configurations.controller.selectedStyles.forEach((key, value) {
-        if (value ?? false) {
-          widget.configurations.controller.formatSelection(key);
-        }
-      });
+      // if (widget.configurations.controller.keepStyleOnNewLine) {
+      //   widget.configurations.controller.selectedStyles.forEach((key, value) {
+      //     if (value ?? false) {
+      //       widget.configurations.controller.formatSelection(key);
+      //     }
+      //   });
+      // }
     }
   }