How to use

getSelectedCount

method

in

org.fujion.component.Listbox

/**
 * Updates controls to reflect the current selection state.
 */
private void updateControls() {
  btnInvite.setDisabled(lstSessions.getSelectedCount() == 0);
}

private void processListResponses() {
  List<?> responses = control.getResponses();
  listbox.setVisible(true);
  
  for (Object rsp : responses) {
    DialogResponse<?> response = (DialogResponse<?>) rsp;
    Listitem item = new Listitem(StrUtil.formatMessage(response.getLabel()));
    item.addEventListener(DblclickEvent.TYPE, clickListener);
    item.setData(response);
    listbox.addChild(item);
    
    if (response.isDefault()) {
      item.setSelected(true);
    }
  }
  
  if (listbox.getSelectedCount() == 0) {
    listbox.setSelectedItem(listbox.getChild(Listitem.class));
  }
  
  addButton(LABEL_ID_CANCEL, "danger", (event) -> {
    close(null);
  });
  
  addButton(LABEL_ID_OK, "success", (event) -> {
    close(listbox.getSelectedItem());
  });
}