function wfGetTreeData($rsargs = null)
{
global $wgAjaxCachePolicy, $wgRequest;
$callback = $wgRequest->getVal('callback');
$orn = $wgRequest->getVal('orn');
$titleText = $wgRequest->getVal('id');
$setRoot = $wgRequest->getBool('setRoot');
$numDescLevels = $wgRequest->getVal('descLevels');
if ($numDescLevels > 10) {
$numDescLevels = 10;
}
$numAncLevels = $wgRequest->getVal('ancLevels');
if ($numAncLevels > 20) {
$numAncLevels = 20;
}
// set cache policy
$wgAjaxCachePolicy->setPolicy(0);
// set content type
$wgAjaxCachePolicy->setContentType($callback ? 'application/javascript' : 'application/json');
$data = null;
$treeData = new TreeData();
if ($titleText) {
$title = Title::newFromText($titleText);
if ($title) {
if ($setRoot) {
// we can get a person initially and when someone sets a new root
if ($orn == 'left') {
$numDescLevels = 0;
if (!$numAncLevels) {
$numAncLevels = $title->getNamespace() == NS_PERSON ? 7 : 6;
}
} else {
if (!$numDescLevels) {
$numDescLevels = $title->getNamespace() == NS_PERSON ? 1 : 2;
}
$numAncLevels = 0;
}
} else {
if ($orn == 'left') {
$numDescLevels = 0;
if (!$numAncLevels) {
$numAncLevels = 2;
}
} else {
if ($orn == 'right') {
if (!$numDescLevels) {
$numDescLevels = 2;
}
$numAncLevels = 0;
} else {
// make sure we have the final redirect
$title = StructuredData::getRedirectToTitle($title);
$orn = 'center';
if ($title->getNamespace() == NS_PERSON) {
if (!$numDescLevels) {
$numDescLevels = 1;
}
if (!$numAncLevels) {
$numAncLevels = 7;
}
} else {
if (!$numDescLevels) {
$numDescLevels = 2;
}
if (!$numAncLevels) {
$numAncLevels = 6;
}
}
}
}
}
if ($title->getNamespace() == NS_PERSON) {
$data = $treeData->getPersonData($title->getText(), $orn, $numDescLevels, $numAncLevels);
} else {
if ($title->getNamespace() == NS_FAMILY) {
$data = $treeData->getFamilyData($title->getText(), $orn, $numDescLevels, $numAncLevels);
}
}
}
}
if (!$data) {
$data = array('error' => 'invalid title');
}
$json = StructuredData::json_encode($data);
if ($callback) {
$json = $callback . '(' . $json . ');';
}
return $json;
}
