/**
  * Get location of all editor.css files
  *
  * @return array
  */
 protected function getEditorCSS()
 {
     $editor = array();
     // Add standard editor.css
     $editor[] = Director::absoluteURL(FRAMEWORK_ADMIN_DIR . '/client/dist/styles/editor.css');
     // Themed editor.css
     $themedEditor = ThemeResourceLoader::instance()->findThemedCSS('editor', SSViewer::get_themes());
     if ($themedEditor) {
         $editor[] = Director::absoluteURL($themedEditor, Director::BASE);
     }
     return $editor;
 }