public MavenArchetypesStep(MavenModuleBuilder builder, @Nullable StepAdapter step) {
    myBuilder = builder;
    myStep = step;
    Disposer.register(this, myLoadingIcon);

    myArchetypesTree = new Tree();
    myArchetypesTree.setModel(new DefaultTreeModel(new DefaultMutableTreeNode()));
    JScrollPane archetypesScrollPane = ScrollPaneFactory.createScrollPane(myArchetypesTree);

    myArchetypesPanel.add(archetypesScrollPane, "archetypes");

    JPanel loadingPanel = new JPanel(new GridBagLayout());
    JPanel bp = new JPanel(new BorderLayout(10, 10));
    bp.add(new JLabel("Loading archetype list..."), BorderLayout.NORTH);
    bp.add(myLoadingIcon, BorderLayout.CENTER);

    loadingPanel.add(bp, new GridBagConstraints());

    myArchetypesPanel.add(ScrollPaneFactory.createScrollPane(loadingPanel), "loading");
    ((CardLayout) myArchetypesPanel.getLayout()).show(myArchetypesPanel, "archetypes");

    myUseArchetypeCheckBox.addItemListener(
        new ItemListener() {
          @Override
          public void itemStateChanged(ItemEvent e) {
            updateComponents();
            archetypeMayBeChanged();
          }
        });

    myAddArchetypeButton.addActionListener(
        new ActionListener() {
          public void actionPerformed(ActionEvent e) {
            doAddArchetype();
          }
        });

    myArchetypesTree.setRootVisible(false);
    myArchetypesTree.setShowsRootHandles(true);
    myArchetypesTree.setCellRenderer(new MyRenderer());
    myArchetypesTree.getSelectionModel().setSelectionMode(TreeSelectionModel.SINGLE_TREE_SELECTION);

    myArchetypesTree
        .getSelectionModel()
        .addTreeSelectionListener(
            new TreeSelectionListener() {
              public void valueChanged(TreeSelectionEvent e) {
                updateArchetypeDescription();
                archetypeMayBeChanged();
              }
            });

    new TreeSpeedSearch(
            myArchetypesTree,
            new Convertor<TreePath, String>() {
              public String convert(TreePath path) {
                MavenArchetype info =
                    getArchetypeInfoFromPathComponent(path.getLastPathComponent());
                return info.groupId + ":" + info.artifactId + ":" + info.version;
              }
            })
        .setComparator(new SpeedSearchComparator(false));

    myArchetypeDescriptionField.setEditable(false);
    myArchetypeDescriptionField.setBackground(UIUtil.getPanelBackground());

    requestUpdate();
    updateComponents();
  }