if (lockCtrl == null) {
//success -> create new User deletion workflow
activatePaneInDetailView = null;
removeAsListenerAndDispose(contentCtr);
contentCtr = new TabbedPaneController(ureq, getWindowControl());
listenTo(contentCtr);
return contentCtr.getInitialComponent();
} else {
//failure -> monolog controller with message that lock failed
return lockCtrl.getInitialComponent();