new RedirectMediaResource(StaticMediaDispatcher.createStaticURIFor("closewindow.html")));
// release all resources and close window
WindowBackOffice wbo = getWindowControl().getWindowBackOffice();
Window w = wbo.getWindow();
Windows.getWindows(ureq).deregisterWindow(w);
wbo.dispose();
} else if (source == langSelection) {
String langKey = langSelection.getSelectedKey();
Locale locale = I18nManager.getInstance().getLocaleOrDefault(langKey);
setLocale(locale, true);