private void traverseToLeaves(
     final PackageDependenciesNode treeNode,
     final StringBuffer denyRules,
     final StringBuffer allowRules) {
   final Enumeration enumeration = treeNode.breadthFirstEnumeration();
   while (enumeration.hasMoreElements()) {
     PsiElement childPsiElement =
         ((PackageDependenciesNode) enumeration.nextElement()).getPsiElement();
     if (myIllegalDependencies.containsKey(childPsiElement)) {
       final Map<DependencyRule, Set<PsiFile>> illegalDeps =
           myIllegalDependencies.get(childPsiElement);
       for (final DependencyRule rule : illegalDeps.keySet()) {
         if (rule.isDenyRule()) {
           if (denyRules.indexOf(rule.getDisplayText()) == -1) {
             denyRules.append(rule.getDisplayText());
             denyRules.append("\n");
           }
         } else {
           if (allowRules.indexOf(rule.getDisplayText()) == -1) {
             allowRules.append(rule.getDisplayText());
             allowRules.append("\n");
           }
         }
       }
     }
   }
 }
 private void checkNodeValidity(@NotNull DefaultMutableTreeNode node) {
   Enumeration enumeration = node.children();
   while (enumeration.hasMoreElements()) {
     checkNodeValidity((DefaultMutableTreeNode) enumeration.nextElement());
   }
   if (node instanceof Node && node != getModelRoot()) ((Node) node).update(this);
 }
 private void step() {
   myNext = null;
   while (myEnum.hasMoreElements()) {
     final Object o = myEnum.nextElement();
     if (o instanceof FileTreeNode) {
       myNext = ((FileTreeNode) o).getFilePointer();
       break;
     }
   }
 }
  private static void sortNode(ParentNode node, final Comparator<ElementNode> sortComparator) {
    ArrayList<MemberNode> arrayList = new ArrayList<MemberNode>();
    Enumeration<MemberNode> children = node.children();
    while (children.hasMoreElements()) {
      arrayList.add(children.nextElement());
    }

    Collections.sort(arrayList, sortComparator);

    replaceChildren(node, arrayList);
  }
  protected void doSort() {
    Pair<ElementNode, List<ElementNode>> pair = storeSelection();

    Enumeration<ParentNode> children = getRootNodeChildren();
    while (children.hasMoreElements()) {
      ParentNode classNode = children.nextElement();
      sortNode(classNode, myComparator);
      myTreeModel.nodeStructureChanged(classNode);
    }

    restoreSelection(pair);
  }
  private void selectElementInLeftTree(PsiElement elt) {
    PsiManager manager = PsiManager.getInstance(myProject);

    PackageDependenciesNode root = (PackageDependenciesNode) myLeftTree.getModel().getRoot();
    Enumeration enumeration = root.breadthFirstEnumeration();
    while (enumeration.hasMoreElements()) {
      PackageDependenciesNode child = (PackageDependenciesNode) enumeration.nextElement();
      if (manager.areElementsEquivalent(child.getPsiElement(), elt)) {
        myLeftTree.setSelectionPath(
            new TreePath(((DefaultTreeModel) myLeftTree.getModel()).getPathToRoot(child)));
        break;
      }
    }
  }
  private static void collectUsages(
      @NotNull DefaultMutableTreeNode node, @NotNull Set<Usage> usages) {
    if (node instanceof UsageNode) {
      UsageNode usageNode = (UsageNode) node;
      final Usage usage = usageNode.getUsage();
      usages.add(usage);
    }

    Enumeration enumeration = node.children();
    while (enumeration.hasMoreElements()) {
      DefaultMutableTreeNode child = (DefaultMutableTreeNode) enumeration.nextElement();
      collectUsages(child, usages);
    }
  }
  public void reset() {
    loadComponentState();
    myHasDeletedItems = false;
    ((DefaultTreeModel) myTree.getModel()).reload();
    // myTree.requestFocus();
    myState.getProportions().restoreSplitterProportions(myWholePanel);

    final Enumeration enumeration = myRoot.breadthFirstEnumeration();
    boolean selected = false;
    while (enumeration.hasMoreElements()) {
      final MyNode node = (MyNode) enumeration.nextElement();
      if (node instanceof MyRootNode) continue;
      final String path = getNodePathString(node);
      if (!selected && Comparing.strEqual(path, myState.getLastEditedConfigurable())) {
        TreeUtil.selectInTree(node, false, myTree);
        selected = true;
      }
    }
    if (!selected) {
      TreeUtil.selectFirstNode(myTree);
    }
    updateSelectionFromTree();
  }
  protected void restoreTree() {
    Pair<ElementNode, List<ElementNode>> selection = storeSelection();

    DefaultMutableTreeNode root = getRootNode();
    if (!myShowClasses || myContainerNodes.isEmpty()) {
      List<ParentNode> otherObjects = new ArrayList<ParentNode>();
      Enumeration<ParentNode> children = getRootNodeChildren();
      ParentNode newRoot =
          new ParentNode(
              null, new MemberChooserObjectBase(getAllContainersNodeName()), new Ref<Integer>(0));
      while (children.hasMoreElements()) {
        final ParentNode nextElement = children.nextElement();
        if (nextElement instanceof ContainerNode) {
          final ContainerNode containerNode = (ContainerNode) nextElement;
          Enumeration<MemberNode> memberNodes = containerNode.children();
          List<MemberNode> memberNodesList = new ArrayList<MemberNode>();
          while (memberNodes.hasMoreElements()) {
            memberNodesList.add(memberNodes.nextElement());
          }
          for (MemberNode memberNode : memberNodesList) {
            newRoot.add(memberNode);
          }
        } else {
          otherObjects.add(nextElement);
        }
      }
      replaceChildren(root, otherObjects);
      sortNode(newRoot, myComparator);
      if (newRoot.children().hasMoreElements()) root.add(newRoot);
    } else {
      Enumeration<ParentNode> children = getRootNodeChildren();
      while (children.hasMoreElements()) {
        ParentNode allClassesNode = children.nextElement();
        Enumeration<MemberNode> memberNodes = allClassesNode.children();
        ArrayList<MemberNode> arrayList = new ArrayList<MemberNode>();
        while (memberNodes.hasMoreElements()) {
          arrayList.add(memberNodes.nextElement());
        }
        Collections.sort(arrayList, myComparator);
        for (MemberNode memberNode : arrayList) {
          myNodeToParentMap.get(memberNode).add(memberNode);
        }
      }
      replaceChildren(root, myContainerNodes);
    }
    myTreeModel.nodeStructureChanged(root);

    defaultExpandTree();

    restoreSelection(selection);
  }