/**
* Constructor
*
* @param Sabre_DAVACL_IPrincipalBackend $principalBackend
* @param Sabre_CalDAV_Backend_BackendInterface $caldavBackend
* @param array $calendarInfo
*/
public function __construct(Sabre_DAVACL_IPrincipalBackend $principalBackend, Sabre_CalDAV_Backend_BackendInterface $caldavBackend, $calendarInfo)
{
$required = array('{http://calendarserver.org/ns/}shared-url', '{http://sabredav.org/ns}owner-principal', '{http://sabredav.org/ns}read-only');
foreach ($required as $r) {
if (!isset($calendarInfo[$r])) {
throw new InvalidArgumentException('The ' . $r . ' property must be specified for SharedCalendar(s)');
}
}
parent::__construct($principalBackend, $caldavBackend, $calendarInfo);
}
