// tabs are full: TODO
// user error message is generated in BaseFullWebappController, nothing
// to do here
} else {
WindowControl bwControl = BusinessControlFactory.getInstance().createBusinessWindowControl(bc, dt.getWindowControl());
Controller launchC = typeHandler.createController(mainCe, ureq, bwControl);
dt.setController(launchC);
dts.addDTab(dt);
}