/**
  * Delete info files
  *
  * @access public
  * 
  */
 public function deleteInfoFilesObject()
 {
     if (!count($_POST['file_id'])) {
         ilUtil::sendFailure($this->lng->txt('select_one'));
         $this->editInfoObject();
         return false;
     }
     include_once 'Modules/Course/classes/class.ilCourseFile.php';
     foreach ($_POST['file_id'] as $file_id) {
         $file = new ilCourseFile($file_id);
         if ($this->object->getId() == $file->getCourseId()) {
             $file->delete();
         }
     }
     ilUtil::sendSuccess($this->lng->txt('settings_saved'));
     $this->editInfoObject();
     return true;
 }