popup = new Popup();
		popup.getContent().add(new Text("This is a test"));
		
		listView.setOnContextMenuRequested(new EventHandler<ContextMenuEvent>() {
			
			@Override
			public void handle(ContextMenuEvent arg0) {
				popup.hide();
				popup.show(listView, arg0.getScreenX()+5, arg0.getScreenY());
			}
			
		});