private void refreshServerList() {
    if (FilterType.HOST.equals(serverStore.getFilter())) {
      String selectedHost = hostStore.getSelectedHost();

      List<Server> serverModel = Collections.EMPTY_LIST;
      if (selectedHost != null) {
        serverModel = serverStore.getServerForHost(hostStore.getSelectedHost());
      }

      getView().updateServerList(serverModel);
    } else if (FilterType.GROUP.equals(serverStore.getFilter())) {
      List<Server> serverModel = serverStore.getServerForGroup(serverStore.getSelectedGroup());
      getView().updateServerList(serverModel);
    }
  }
 public String getSelectedGroup() {
   return serverStore.getSelectedGroup();
 }