#3401611 Replace jquery/once by core/once

js/widget_engine.make_preview.js

@@ -5,7 +5,7 @@
 
 var Widget = Widget || {};
 
-(function ($, Drupal, drupalSettings, document, html2canvas) {
+(function ($, Drupal, drupalSettings, document, html2canvas, once) {
   "use strict";
 
   /**
@@ -108,7 +108,7 @@ var Widget = Widget || {};
     attach: function (context) {
       $(document).delegate('.ief-widget-table', 'afterSaveWidget', function (ev, data) {
         var $self = $(this);
-        $(this).once('widgetItem').each(function () {
+        $(once('widgetItem', $(this))).each(function () {
           Widget.checkEmptyPreview($self);
         });
       });
@@ -121,7 +121,7 @@ var Widget = Widget || {};
    */
   Drupal.behaviors.widgetGeneratePreview = {
     attach: function (context) {
-      $('#widget-generate-preview').once('widgetPreview').each(function () {
+      $(once('widgetPreview', '#widget-generate-preview')).each(function () {
         if (typeof drupalSettings.widget_engine === 'undefined') {
           return false;
         }
@@ -131,4 +131,4 @@ var Widget = Widget || {};
     }
   };
 
-}(jQuery, Drupal, drupalSettings, document, html2canvas));
+}(jQuery, Drupal, drupalSettings, document, html2canvas, once));