private void initTree(final MyTree tree) {
    tree.getSelectionModel().setSelectionMode(TreeSelectionModel.SINGLE_TREE_SELECTION);
    tree.setCellRenderer(new MyTreeCellRenderer(tree == myLeftTree));
    tree.setRootVisible(false);
    tree.setShowsRootHandles(true);
    TreeUtil.installActions(tree);
    SmartExpander.installOn(tree);
    EditSourceOnDoubleClickHandler.install(tree);
    TreeUIHelper.getInstance().installTreeSpeedSearch(tree);

    PopupHandler.installPopupMenu(tree, createTreePopupActions(), "CyclicDependenciesPopup");
  }
private void initTree(final MyTree tree)