protected function getNotificationTargetUserIds()
{
global $tree;
if ($this->getTutorNotificationTarget() == self::NOTIFICATION_INVITED_USERS) {
$user_ids = $this->getInvitedUsers();
} else {
$parent_grp_ref_id = $tree->checkForParentType($this->getRefId(), "grp");
if ($parent_grp_ref_id) {
include_once "Modules/Group/classes/class.ilGroupParticipants.php";
$part = new ilGroupParticipants(ilObject::_lookupObjId($parent_grp_ref_id));
$user_ids = $part->getMembers();
} else {
$parent_crs_ref_id = $tree->checkForParentType($this->getRefId(), "crs");
if ($parent_crs_ref_id) {
include_once "Modules/Course/classes/class.ilCourseParticipants.php";
$part = new ilCourseParticipants(ilObject::_lookupObjId($parent_crs_ref_id));
$user_ids = $part->getMembers();
}
}
}
return $user_ids;
}
