$selectedcategoryid = optional_param('selectedcategory', null, PARAM_INT);
$outcome->outcome = \core_course\management\helper::action_category_hide_by_id($categoryid);
$outcome->categoryvisibility = \core_course\management\helper::get_category_children_visibility($categoryid);
$outcome->coursevisibility = \core_course\management\helper::get_category_courses_visibility($categoryid);
if ($selectedcategoryid !== null) {
$outcome->coursevisibility = array_merge($outcome->coursevisibility, \core_course\management\helper::get_category_courses_visibility($selectedcategoryid));
}
break;
case 'showcategory':
$categoryid = required_param('categoryid', PARAM_INT);
$selectedcategoryid = optional_param('selectedcategory', null, PARAM_INT);
$outcome->outcome = \core_course\management\helper::action_category_show_by_id($categoryid);
$outcome->categoryvisibility = \core_course\management\helper::get_category_children_visibility($categoryid);
$outcome->coursevisibility = \core_course\management\helper::get_category_courses_visibility($categoryid);
if ($selectedcategoryid !== null) {
$outcome->coursevisibility = array_merge($outcome->coursevisibility, \core_course\management\helper::get_category_courses_visibility($selectedcategoryid));
}
break;
case 'expandcategory':
$categoryid = required_param('categoryid', PARAM_INT);
$coursecat = coursecat::get($categoryid);
\core_course\management\helper::record_expanded_category($coursecat);
$outcome->outcome = true;
break;
case 'collapsecategory':
$categoryid = required_param('categoryid', PARAM_INT);
$coursecat = coursecat::get($categoryid);
\core_course\management\helper::record_expanded_category($coursecat, false);
$outcome->outcome = true;
break;
case 'getsubcategorieshtml':
