Line 15-22

ckeditor-3.0.js

insert: function(content) {
    content = this.prepareContent(content);
    if (CKEDITOR.env.webkit || CKEDITOR.env.chrome || CKEDITOR.env.opera || CKEDITOR.env.safari) {
      // Works around a WebKit bug which removes wrapper elements.
      // @see https://drupal.org/node/1927968
      var tmp = new CKEDITOR.dom.element('div'), children, skip = 0, item;
      tmp.setHtml(content);
      children = tmp.getChildren();
      skip = 0;
      while (children.count() > skip) {
        item = children.getItem(skip);
        switch(item.type) {
          case 1:
            CKEDITOR.instances[this.field].insertElement(item);
            // Widget initialization support.
            // @see http://stackoverflow.com/a/20245520/292408
            var widgets = CKEDITOR.instances[this.field].widgets.registered;
            for (var widgetName in widgets) {
              if (widgets.hasOwnProperty(widgetName)) {
                CKEDITOR.instances[this.field].widgets.initOn(item, widgetName);
              }
            }
            break;
          case 3:
            CKEDITOR.instances[this.field].insertText(item.getText());
            skip++;
            break;
          case 8:
            CKEDITOR.instances[this.field].insertHtml(item.getOuterHtml());
            skip++;
            break;
        }
      }
    }
    else {
      CKEDITOR.instances[this.field].insertHtml(content);
    }
  },

var widgetName = CKEDITOR.instances[this.field].widgets.registered[0]; // not really index 0 as it is an object with string as key.
CKEDITOR.instances[this.field].widgets.initOn( item, 'embed-external-widget');