/**
  * Save sorting settings
  * @param ilPropertyFormGUI $form
  */
 protected function saveSortingSettings(ilPropertyFormGUI $form)
 {
     include_once 'Services/Container/classes/class.ilContainerSortingSettings.php';
     $settings = new ilContainerSortingSettings($this->object->getId());
     $settings->setSortMode($form->getInput("sorting"));
     switch ($form->getInput('sorting')) {
         case ilContainer::SORT_TITLE:
             $settings->setSortDirection($form->getInput('title_sorting_direction'));
             break;
         case ilContainer::SORT_ACTIVATION:
             $settings->setSortDirection($form->getInput('activation_sorting_direction'));
             break;
         case ilContainer::SORT_CREATION:
             $settings->setSortDirection($form->getInput('creation_sorting_direction'));
             break;
         case ilContainer::SORT_MANUAL:
             $settings->setSortNewItemsPosition($form->getInput('manual_new_items_position'));
             $settings->setSortNewItemsOrder($form->getInput('manual_new_items_order'));
             $settings->setSortDirection($form->getInput('manual_sorting_direction'));
             break;
     }
     $settings->update();
 }