/**
* Checks if the embed button is enabled in an editor configuration.
*
* @param \Drupal\embed\EmbedButtonInterface $embed_button
* The embed button entity to check.
* @param \Drupal\editor\EditorInterface $editor
* The editor entity to check.
*
* @return \Drupal\Core\Access\AccessResultInterface
*
* @throws \Symfony\Component\HttpKernel\Exception\HttpException
* When the received Text Editor entity does not use CKEditor. This is
* currently only capable of detecting buttons used by CKEditor.
*/
protected function checkButtonEditorAccess(EmbedButtonInterface $embed_button, EditorInterface $editor)
{
if ($editor->getEditor() !== 'ckeditor') {
throw new HttpException(500, 'Currently, only CKEditor is supported.');
}
$has_button = FALSE;
$settings = $editor->getSettings();
foreach ($settings['toolbar']['rows'] as $row) {
foreach ($row as $group) {
if (in_array($embed_button->id(), $group['items'])) {
$has_button = TRUE;
break 2;
}
}
}
return AccessResult::allowedIf($has_button)->addCacheableDependency($embed_button)->addCacheableDependency($editor);
}
/**
* 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());
}