Examples of javax.swing.tree.DefaultMutableTreeNode$PathBetweenNodesEnumeration

javax.swing.tree.DefaultMutableTreeNode
oracle.com/javase/tutorial/uiswing/components/tree.html">How to Use Trees in The Java Tutorial.
A tree node may have at most one parent and 0 or more children. DefaultMutableTreeNode provides operations for examining and modifying a node's parent and children and also operations for examining the tree that the node is a part of. A node's tree is the set of all nodes that can be reached by starting at the node and following all the possible links to parents and children. A node with no parent is the root of its tree; a node with no children is a leaf. A tree may consist of many subtrees, each node acting as the root for its own subtree.
This class provides enumerations for efficiently traversing a tree or subtree in various orders or for following the path between two nodes. A DefaultMutableTreeNode may also hold a reference to a user object, the use of which is left to the user. Asking a DefaultMutableTreeNode for its string representation with toString() returns the string representation of its user object.
This is not a thread safe class.If you intend to use a DefaultMutableTreeNode (or a tree of TreeNodes) in more than one thread, you need to do your own synchronizing. A good convention to adopt is synchronizing on the root node of a tree.
While DefaultMutableTreeNode implements the MutableTreeNode interface and will allow you to add in any implementation of MutableTreeNode not all of the methods in DefaultMutableTreeNode will be applicable to all MutableTreeNodes implementations. Especially with some of the enumerations that are provided, using some of these methods assumes the DefaultMutableTreeNode contains only DefaultMutableNode instances. All of the TreeNode/MutableTreeNode methods will behave as defined no matter what implementations are added.
Warning: Serialized objects of this class will not be compatible with future Swing releases. The current serialization support is appropriate for short term storage or RMI between applications running the same version of Swing. As of 1.4, support for long term storage of all JavaBeans™ has been added to the java.beans package. Please see {@link java.beans.XMLEncoder}. @see MutableTreeNode @author Rob Davis

            rootTreeNode.add(createHelpTreeNode(rootNode.getChildAt(i)));
        }
    }


    private DefaultMutableTreeNode createHelpTreeNode(HelpNode hn){
        DefaultMutableTreeNode ret = new DefaultMutableTreeNode((Object)hn);


        // Update node table
        targetToNodeTable.put(hn.getLink(), ret);


        // Add its children
        for(int i =0; i< hn.getChildrenCount();i++){
            ret.add( createHelpTreeNode(hn.getChildAt(i)));
        }
        return ret;
    }

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            boolean containsAllKeyword= (keywords.length!=0);
            for(int j=0;j<keywords.length;j++)
                containsAllKeyword&= (result.indexOf(keywords[j])!=-1);


            if (containsAllKeyword){
                searchRootTreeNode.add( new DefaultMutableTreeNode(node) );
            }
        }


        // Do the search on children pages
        for(int i=0;i< node.getChildrenCount();i++){

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    /* (non-Javadoc)
     * @see javax.swing.event.TreeSelectionListener#valueChanged(javax.swing.event.TreeSelectionEvent)
     */
    public void valueChanged(TreeSelectionEvent e){
        DefaultMutableTreeNode  f = (DefaultMutableTreeNode) e.getPath().getLastPathComponent();
        HelpNode hn = (HelpNode)f.getUserObject();
        if (hn!=null){
            displayPageEvent(hn.getLink());
        }


    }

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            // Set as current page
            currentPage = page;
            
            // Get page tree path
            DefaultMutableTreeNode node = (DefaultMutableTreeNode)targetToNodeTable.get(page);
            if (node != null){
                TreePath path = new TreePath(node.getPath());


                // If page path has changed, update help tree and back stack
                if (!path.equals(helpTree.getSelectionPath())){
                    helpTree.scrollPathToVisible(path);
                    helpTree.setSelectionPath(path);

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              {
                // Clear the attributes table!
                DefaultTableModel model = (DefaultTableModel)table.getModel();
                model.setRowCount(0);


                DefaultMutableTreeNode node = (DefaultMutableTreeNode)tree.getLastSelectedPathComponent();
                if(node == null)
                  return;


                // Show the current node attributes into the table!
                Object nodeValue = node.getUserObject();
                if(nodeValue instanceof ContentNodeValue)
                {showContentAttributes(((ContentNodeValue)nodeValue).getContent(), model);}
                else if(nodeValue instanceof PageNodeValue)
                {showPageAttributes(((PageNodeValue)nodeValue).getPage().getContents(), model);}


                pack(table);
              }
            }
            );
          tree.addTreeWillExpandListener(
            new TreeWillExpandListener()
            {
              @Override
              public void treeWillCollapse(TreeExpansionEvent event) throws ExpandVetoException
              {/* NOOP */}
              @Override
              public void treeWillExpand(TreeExpansionEvent event) throws ExpandVetoException
              {
                DefaultMutableTreeNode node = (DefaultMutableTreeNode)event.getPath().getLastPathComponent();
                Object nodeValue = node.getUserObject();
                if(nodeValue instanceof PageNodeValue)
                {
                  // Content placeholder?
                  if(((DefaultMutableTreeNode)node.getFirstChild()).getUserObject() == null)
                  {
                    // Remove the content placeholder!
                    node.removeAllChildren();


                    // Create the page content nodes!
                    createContentNodes(
                      ((PageNodeValue)nodeValue).getPage().getContents(),
                      node

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    {throw new RuntimeException(file.getAbsolutePath() + " file has a bad file format.",e);}
    catch(Exception e)
    {throw new RuntimeException(file.getAbsolutePath() + " file access error.",e);}


    // Create the root node!
    DefaultMutableTreeNode fileNode = new DefaultMutableTreeNode(file.getName());
    ((DefaultTreeModel)tree.getModel()).setRoot(fileNode);


    // Create the page nodes!
    createPageNodes(fileNode);

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    DefaultMutableTreeNode parentNode
    )
  {
    for(ContentObject content : contents)
    {
      DefaultMutableTreeNode contentNode = new DefaultMutableTreeNode(
        new ContentNodeValue(content)
        );
      parentNode.add(contentNode);


      if(content instanceof CompositeObject)

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    DefaultMutableTreeNode fileNode
    )
  {
    for(Page page : file.getDocument().getPages())
    {
      DefaultMutableTreeNode pageNode = new DefaultMutableTreeNode(
        new PageNodeValue(page)
        );
      fileNode.add(pageNode);


      // Add a placeholder node to postpone content parsing!
      DefaultMutableTreeNode contentPlaceholderNode = new DefaultMutableTreeNode();
      pageNode.add(contentPlaceholderNode);
    }
  }

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         }
      }
      clearSelection();




      DefaultMutableTreeNode parent = (DefaultMutableTreeNode) nodes[0].getParent();


      if (parent != null)
      {
         parent.removeAllChildren();
         startExpandingTree((ObjectTreeNode) parent, false, selectedPathNames, true);
      }
      else
      {
         nodes[0].removeAllChildren();

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    /**
     * Sets the tree up
     */
    private void setupTree() {
        root = new DefaultMutableTreeNode(resources.getString("preferences"));
        topNode = new DefaultMutableTreeNode(resources.getString("preferences"));
        root.add(topNode);


        DefaultTreeCellRenderer renderer = new DefaultTreeCellRenderer() {
            public Component getTreeCellRendererComponent(JTree tree,
                    Object value, boolean sel, boolean expanded, boolean leaf,
                    int row, boolean hasFocus) {
                super.getTreeCellRendererComponent(tree, value, sel, expanded,
                        leaf, row, hasFocus);


                DefaultMutableTreeNode node = (DefaultMutableTreeNode) value;
                setText(((String) node.getUserObject()).replaceAll("^a\\d+ ",
                        ""));


                return this;
            }
        };
        renderer.setLeafIcon(null);


        Iterator i = prefsDialog.getPanels().keySet().iterator();


        while (i.hasNext()) {
            topNode.add(new DefaultMutableTreeNode((String) i.next()));
        }


        TreeMap plugins = PreferencesDialog.getPluginPanels();
        if (plugins.size() > 0) {
            pluginsNode = new DefaultMutableTreeNode(resources
                    .getString("pluginPreferences"));
            i = plugins.keySet().iterator();
            while (i.hasNext()) {
                pluginsNode.add(new DefaultMutableTreeNode((String) i.next()));
            }
            root.add(pluginsNode);
        }


        tree = new JTree(root);

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