/**
  * Apply template
  * @param int $a_tpl_id
  */
 public function applyDidacticTemplate($a_tpl_id)
 {
     if (!$a_tpl_id) {
         return true;
     }
     include_once './Services/DidacticTemplate/classes/class.ilDidacticTemplateObjSettings.php';
     ilDidacticTemplateObjSettings::assignTemplate($this->getRefId(), $this->getId(), (int) $a_tpl_id);
     include_once './Services/DidacticTemplate/classes/class.ilDidacticTemplateActionFactory.php';
     foreach (ilDidacticTemplateActionFactory::getActionsByTemplateId($a_tpl_id) as $action) {
         $action->setRefId($this->getRefId());
         $action->apply();
     }
 }
 /**
  * Switch Template
  */
 protected function switchTemplate()
 {
     global $ilCtrl;
     $new_tpl_id = (int) $_REQUEST['tplid'];
     include_once './Services/DidacticTemplate/classes/class.ilDidacticTemplateObjSettings.php';
     $current_tpl_id = ilDidacticTemplateObjSettings::lookupTemplateId($this->getParentObject()->object->getRefId());
     // Revert current template
     if ($current_tpl_id) {
         include_once './Services/DidacticTemplate/classes/class.ilDidacticTemplateActionFactory.php';
         foreach (ilDidacticTemplateActionFactory::getActionsByTemplateId($current_tpl_id) as $action) {
             $action->setRefId($this->getParentObject()->object->getRefId());
             $action->revert();
         }
     }
     if ($new_tpl_id) {
         include_once './Services/DidacticTemplate/classes/class.ilDidacticTemplateActionFactory.php';
         foreach (ilDidacticTemplateActionFactory::getActionsByTemplateId($new_tpl_id) as $action) {
             $action->setRefId($this->getParentObject()->object->getRefId());
             $action->apply();
         }
     }
     // Assign template id to object
     ilDidacticTemplateObjSettings::assignTemplate($this->getParentObject()->object->getRefId(), $this->getParentObject()->object->getId(), $new_tpl_id);
     ilUtil::sendSuccess($this->lng->txt('didactic_template_applied'), true);
     $ilCtrl->returnToParent($this);
 }