code: protected void openNewDialog(String id) {
  
          CmsBasicDialog dialog = null;
          String caption = "";
  
          if (id.equals(ID_GROUP)) {
              dialog = new CmsGroupEditDialog(m_cms, m_window, m_ou, m_app);
              caption = CmsVaadinUtils.getMessageText(Messages.GUI_USERMANAGEMENT_ADD_GROUP_0);
          }
          if (id.equals(ID_OU)) {
              dialog = new CmsOUEditDialog(m_cms, m_window, m_ou, m_app);
              caption = CmsVaadinUtils.getMessageText(Messages.GUI_USERMANAGEMENT_ADD_OU_0);
  
          }
          if (id.equals(ID_USER)) {
              dialog = new CmsUserEditDialog(m_cms, m_window, m_ou, m_app);
              caption = CmsVaadinUtils.getMessageText(Messages.GUI_USERMANAGEMENT_ADD_USER_0);
          }
  
          if (dialog != null) {
              m_window.setContent(dialog);
              m_window.setCaption(caption);
              m_window.center();
          }
      }
docs: Opens the dialog.<p>
  
  @param id of selected item