@Nullable
    @Override
    protected JComponent createCenterPanel() {
      JLabel informationalLabel = new JLabel();
      informationalLabel.setText(PropertiesBundle.message("copy.property.0.label", ContainerUtil.getFirstItem(myProperties).getName()));
      informationalLabel.setFont(informationalLabel.getFont().deriveFont(Font.BOLD));

      final Collection<PropertiesFile> propertiesFiles = new ArrayList<>();

      GlobalSearchScope searchScope = ProjectScope.getContentScope(myProject);
      PropertiesReferenceManager
        .getInstance(myProject)
        .processPropertiesFiles(searchScope,
                                (baseName, propertiesFile) -> {
                                  propertiesFiles.add(propertiesFile);
                                  return true;
                                }, BundleNameEvaluator.BASE_NAME);

      PsiFileSystemItem[] resourceBundlesAsFileSystemItems = propertiesFiles
        .stream()
        .map(PropertiesFile::getResourceBundle)
        .distinct()
        .filter(b -> b.getBaseDirectory() != null)
        .sorted(Comparator.comparing(ResourceBundle::getBaseName))
        .map(ResourceBundleAsFileSystemItem::new)
        .toArray(PsiFileSystemItem[]::new);
      final ComboBox<PsiFileSystemItem> resourceBundleComboBox = new ComboBox<>(resourceBundlesAsFileSystemItems);
      ComboboxSpeedSearch search = new ComboboxSpeedSearch(resourceBundleComboBox, null) {
        @Override
        protected String getElementText(Object element) {
          return ((PsiFileSystemItem)element).getName();
        }
      };
      search.setupListeners();

      resourceBundleComboBox.setRenderer(new GotoFileCellRenderer(500) {
        @Override
        public Component getListCellRendererComponent(JList list, Object value, int index, boolean isSelected, boolean cellHasFocus) {
          final Component component = super.getListCellRendererComponent(list, value, index, isSelected, cellHasFocus);
          UIUtil.setBackgroundRecursively(component, isSelected ? UIUtil.getListSelectionBackground(true) : resourceBundleComboBox.getBackground());
          return component;
        }
      });
      resourceBundleComboBox.addItemListener(new ItemListener() {
        @Override
        public void itemStateChanged(@NotNull ItemEvent e) {
          myCurrentResourceBundle = ((ResourceBundleAsFileSystemItem)e.getItem()).getResourceBundle();
        }
      });
      resourceBundleComboBox.setSelectedItem(new ResourceBundleAsFileSystemItem(myCurrentResourceBundle));

      myPropertyNameTextField = new JBTextField(ContainerUtil.getFirstItem(myProperties).getKey());
      myPropertyNameTextField.getDocument().addDocumentListener(new DocumentAdapter() {
        @Override
        protected void textChanged(@NotNull DocumentEvent e) {
          myCurrentPropertyName = myPropertyNameTextField.getText();
        }
      });
      return FormBuilder
        .createFormBuilder()
        .addComponent(informationalLabel)
        .addLabeledComponent(PropertiesBundle.message("copy.destination.new.name.label"), myPropertyNameTextField, UIUtil.LARGE_VGAP)
        .addLabeledComponent(PropertiesBundle.message("copy.destination.resource.bundle.label"), resourceBundleComboBox)
        .getPanel();
    }
@Nullable
    @Override
    protected JComponent createCenterPanel()