phpQuery::getDocument PHP Method

    public static function getDocument($id = null)
    {
        if ($id) {
            self::selectDocument($id);
        } else {
            $id = self::$defaultDocumentID;
        }
        return new phpQueryObject($id);
    }

 /**
  * Trigger a type of event on every matched element.
  *
  * @param DOMNode|phpQueryObject|string $document
  * @param unknown_type $type
  * @param unknown_type $data
  *
  * @TODO exclusive events (with !)
  * @TODO global events (test)
  * @TODO support more than event in $type (space-separated)
  */
 public static function trigger($document, $type, $data = array(), $node = null)
 {
     // trigger: function(type, data, elem, donative, extra) {
     $documentID = phpQuery::getDocumentID($document);
     $namespace = null;
     if (strpos($type, '.') !== false) {
         list($name, $namespace) = explode('.', $type);
     } else {
         $name = $type;
     }
     if (!$node) {
         if (self::issetGlobal($documentID, $type)) {
             $pq = phpQuery::getDocument($documentID);
             // TODO check add($pq->document)
             $pq->find('*')->add($pq->document)->trigger($type, $data);
         }
     } else {
         if (isset($data[0]) && $data[0] instanceof DOMEvent) {
             $event = $data[0];
             $event->relatedTarget = $event->target;
             $event->target = $node;
             $data = array_slice($data, 1);
         } else {
             $event = new DOMEvent(array('type' => $type, 'target' => $node, 'timeStamp' => time()));
         }
         $i = 0;
         while ($node) {
             // TODO whois
             phpQuery::debug("Triggering " . ($i ? "bubbled " : '') . "event '{$type}' on " . "node \n");
             //.phpQueryObject::whois($node)."\n");
             $event->currentTarget = $node;
             $eventNode = self::getNode($documentID, $node);
             if (isset($eventNode->eventHandlers)) {
                 foreach ($eventNode->eventHandlers as $eventType => $handlers) {
                     $eventNamespace = null;
                     if (strpos($type, '.') !== false) {
                         list($eventName, $eventNamespace) = explode('.', $eventType);
                     } else {
                         $eventName = $eventType;
                     }
                     if ($name != $eventName) {
                         continue;
                     }
                     if ($namespace && $eventNamespace && $namespace != $eventNamespace) {
                         continue;
                     }
                     foreach ($handlers as $handler) {
                         phpQuery::debug("Calling event handler\n");
                         $event->data = $handler['data'] ? $handler['data'] : null;
                         $params = array_merge(array($event), $data);
                         $return = phpQuery::callbackRun($handler['callback'], $params);
                         if ($return === false) {
                             $event->bubbles = false;
                         }
                     }
                 }
             }
             // to bubble or not to bubble...
             if (!$event->bubbles) {
                 break;
             }
             $node = $node->parentNode;
             $i++;
         }
     }
 }