protected function renderControlNonEditable()
 {
     assert('$this->model instanceof EmailMessage');
     if ($this->model->folder->type == EmailFolder::TYPE_SENT) {
         return parent::renderControlNonEditable();
     }
     return Zurmo::t('EmailMessagesModule', 'Currently in the {folderType} folder', array('{folderType}' => EmailFolder::getTranslatedFolderNameByType($this->model->folder->type)));
 }