Issue #3238915: Refactor (if feasible) uses of the jQuery ready function to use VanillaJS

core/modules/ckeditor5/js/ckeditor5.dialog.fix.es6.js

@@ -7,23 +7,12 @@
  */
 
 (($) => {
-  // Get core version of the _focusTabbable method.
-  const oldFocusTabbable = $.ui.dialog._proto._focusTabbable;
-
   $.widget('ui.dialog', $.ui.dialog, {
-    // Override core override of jQuery UI's `_focusTabbable()` so that
+    // Override core override of jQuery UI's `_allowInteraction()` so that
     // CKEditor 5 in modals can work as expected.
-    _focusTabbable() {
-      // When the focused element is a CKEditor 5 instance, disable jQuery UI
-      // focus trap and delegate focus trap to CKEditor 5.
-      const hasFocus = this._focusedElement
-        ? this._focusedElement.get(0)
-        : null;
-      // In case the element is a CKEditor 5 instance, do not change focus
-      // management.
-      if (!(hasFocus && hasFocus.ckeditorInstance)) {
-        oldFocusTabbable.call(this);
-      }
+    // @see https://api.jqueryui.com/dialog/#method-_allowInteraction
+    _allowInteraction(event) {
+      return event.target.classList.contains('ck') || this._super(event);
     },
   });
 })(jQuery);