public function copy_menus_callback()
 {
     if (!$this->can_edit_role_menus()) {
         echo '[]';
         die;
     }
     if (!empty($_POST['role'])) {
         $role = $_POST['role'];
         $entity = new WPFront_User_Role_Editor_Entity_Menu_Editor();
         $data = $entity->get_all_by_role($role);
         $json = array();
         foreach ($data as $value) {
             if (!$value->get_enabled()) {
                 $json[] = '["' . esc_attr(urlencode($value->get_menu_slug())) . '","' . esc_attr(urlencode($value->get_parent_menu_slug())) . '"]';
             }
         }
         echo '[' . implode(',', $json) . ']';
     }
     die;
 }