Selection completion customizable via callback

lib/src/widgets/controller.dart

@@ -20,6 +20,7 @@ class QuillController extends ChangeNotifier {
     bool keepStyleOnNewLine = false,
     this.onReplaceText,
     this.onDelete,
+    this.onSelectionCompleted,
   })  : _selection = selection,
         _keepStyleOnNewLine = keepStyleOnNewLine;
 
@@ -48,6 +49,8 @@ class QuillController extends ChangeNotifier {
   /// Custom delete handler
   DeleteCallback? onDelete;
 
+  void Function()? onSelectionCompleted;
+
   /// Store any styles attribute that got toggled by the tap of a button
   /// and that has not been applied yet.
   /// It gets reset after each format action within the [document].
@@ -242,10 +245,6 @@ class QuillController extends ChangeNotifier {
     notifyListeners();
   }
 
-  // callback sub classes can override to implement actions when a selection is
-  // completed.
-  void selectionCompleted() {}
-
   void compose(Delta delta, TextSelection textSelection, ChangeSource source) {
     if (delta.isNotEmpty) {
       document.compose(delta, source);

lib/src/widgets/raw_editor.dart

@@ -377,7 +377,7 @@ class RawEditorState extends EditorState
   }
 
   void _handleSelectionCompleted() {
-    widget.controller.selectionCompleted();
+    widget.controller.onSelectionCompleted?.call();
   }
 
   /// Updates the checkbox positioned at [offset] in document