/**
  *
  * @param $url
  * @param string
  * @return \FormValidator
  */
 private function getForm($url, $tool)
 {
     $toolbar_set = 'IntroductionTool';
     $width = '100%';
     $height = '300';
     $editor_config = array('ToolbarSet' => $toolbar_set, 'Width' => $width, 'Height' => $height);
     $form = new \FormValidator('form', 'post', $url);
     $form->add_html_editor('content', null, null, false, $editor_config);
     if ($tool == 'course_homepage') {
         $form->addElement('label', get_lang('YouCanUseAllTheseTags'), '((' . implode(')) <br /> ((', \CourseHome::availableTools()) . '))');
     }
     $form->addElement('button', 'submit', get_lang('SaveIntroText'));
     return $form;
 }