nextcloud/apps/calendar/ajax/editcalendar.php

<?php
/**
 * Copyright (c) 2011 Bart Visscher <bartv@thisnet.nl>
 * This file is licensed under the Affero General Public License version 3 or
 * later.
 * See the COPYING-README file.
 */

require_once('../../../lib/base.php');
OC_JSON::checkLoggedIn();
OC_JSON::checkAppEnabled('calendar');

$calendarcolor_options = OC_Calendar_Calendar::getCalendarColorOptions();
$calendar = OC_Calendar_App::getCalendar($_GET['calendarid']);
$tmpl = new OC_Template("calendar", "part.editcalendar");
$tmpl->assign('new', false);
$tmpl->assign('calendarcolor_options', $calendarcolor_options);
$tmpl->assign('calendar', $calendar);
$tmpl->printPage();
?>