/**
* Returns an Ajax response to generate preview of an entity.
*
* Expects the the HTML element as GET parameter.
*
* @param \Symfony\Component\HttpFoundation\Request $request
* The request object.
* @param \Drupal\editor\EditorInterface $editor
* The editor.
* @param \Drupal\embed\EmbedButtonInterface $embed_button
* The embed button.
*
* @throws \Symfony\Component\HttpKernel\Exception\NotFoundHttpException
* Throws an exception if 'value' parameter is not found in the request.
*
* @return \Symfony\Component\HttpFoundation\Response
* The preview of the embedded item specified by the data attributes.
*/
public function previewEditor(Request $request, EditorInterface $editor, EmbedButtonInterface $embed_button)
{
return $this->preview($request, $editor->getFilterFormat());
}
