/**
  * Display this class
  */
 private function prepareSmarty()
 {
     $this->smarty = new Template();
     $this->smarty->assign('heading', $this->file->filename);
     $this->smarty->assign('title', $this->file->filename);
     $this->smarty->assign('file', $this->file);
     $this->smarty->requireResource('file');
     $select = new Select('permission', '', FilePermissions::getAll());
     $select->selected_value = $this->file->permission;
     $this->smarty->assign('permission', $select->render());
 }