/**
  * Listen to the routing.load_configuration event
  *
  * @param sfEvent $event
  */
 public function listenToRoutingLoadConfigurationEvent(sfEvent $event)
 {
     $event->getSubject()->prependRoute('knp_markdown_preview', new sfRoute('/markdown/preview', array('module' => 'knpMarkdown', 'action' => 'preview'), array(), array()));
     sfWidgetFormMarkdown::setRouting($event->getSubject());
 }
 /**
  * Sets a routing instance
  * 
  * @param sfRouting $routing
  */
 public static function setRouting(sfRouting $routing)
 {
     self::$routing = $routing;
 }