private @NotNull JBPopup createLightWeightPopup(@NotNull MyInputValidator validator,
                                                  @NotNull Consumer<? super PsiElement[]> consumer) {
    NewItemSimplePopupPanel contentPanel = new NewItemSimplePopupPanel();
    JTextField nameField = contentPanel.getTextField();
    JBPopup popup = NewItemPopupUtil.createNewItemPopup(IdeBundle.message("title.new.file"), contentPanel, nameField);
    contentPanel.setApplyAction(event -> {
      String name = nameField.getText();
      if (validator.checkInput(name) && validator.canClose(name)) {
        popup.closeOk(event);
        consumer.accept(validator.getCreatedElements());
      }
      else {
        String errorMessage = validator instanceof InputValidatorEx
                              ? ((InputValidatorEx)validator).getErrorText(name)
                              : LangBundle.message("incorrect.name");
        contentPanel.setError(errorMessage);
      }
    });

    return popup;
  }
private @NotNull JBPopup createLightWeightPopup(@NotNull MyInputValidator validator,
                                                  @NotNull Consumer<? super PsiElement[]> consumer)