public DefaultMutableTreeNode findNode(DefaultMutableTreeNode parent, String match) {
if (parent == null) return null;
// Commented by Balan on 15/03/03
// String treename = (String)parent.getUserObject ();
// Comment Ends
// Added by Balan on 15/03/03
String treename = "" + ((Hashtable) parent.getUserObject()).get("TREE-NAME");
// Add Ends
if (treename != null) {
if (treename.equals(match)) return parent;
}
if (frame.model.isLeaf(parent)) return null;
Enumeration en = parent.children();
if ((en == null) || (!en.hasMoreElements())) return null;
for (; en.hasMoreElements(); ) {
DefaultMutableTreeNode child = (DefaultMutableTreeNode) en.nextElement();
DefaultMutableTreeNode returnNode = findNode(child, match);
if (returnNode != null) return returnNode;
}
return null;
}
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);
}
// {{{ traverseNodes() method
public static boolean traverseNodes(
DefaultMutableTreeNode node, HyperSearchTreeNodeCallback callbackInterface) {
if (!callbackInterface.processNode(node)) return false;
for (Enumeration e = node.children(); e.hasMoreElements(); ) {
DefaultMutableTreeNode childNode = (DefaultMutableTreeNode) e.nextElement();
if (!traverseNodes(childNode, callbackInterface)) return false;
}
return true;
} // }}}
@Override
public void actionPerformed(ActionEvent evt) {
TreePath path = resultTree.getSelectionPath();
DefaultMutableTreeNode operNode = (DefaultMutableTreeNode) path.getLastPathComponent();
for (Enumeration e = operNode.children(); e.hasMoreElements(); ) {
DefaultMutableTreeNode node = (DefaultMutableTreeNode) e.nextElement();
resultTree.collapsePath(new TreePath(node.getPath()));
}
resultTree.scrollPathToVisible(new TreePath(operNode.getPath()));
}
/**
* Update the layouts tree.
*
* @param current The name of the current layout or <CODE>null</CODE> if none.
*/
public void updateLayouts(Path current) throws PipelineException {
DefaultMutableTreeNode root = null;
{
root = new DefaultMutableTreeNode(new TreeData(), true);
{
Path path = new Path(PackageInfo.getSettingsPath(), "layouts");
rebuildTreeModel(path, new Path("/"), root);
}
DefaultTreeModel model = (DefaultTreeModel) pTree.getModel();
model.setRoot(root);
{
Enumeration e = root.depthFirstEnumeration();
if (e != null) {
while (e.hasMoreElements()) {
DefaultMutableTreeNode tnode = (DefaultMutableTreeNode) e.nextElement();
pTree.expandPath(new TreePath(tnode.getPath()));
}
}
}
}
pTree.clearSelection();
if (current != null) {
TreePath tpath = null;
DefaultMutableTreeNode tnode = root;
for (String comp : current.getComponents()) {
DefaultMutableTreeNode next = null;
Enumeration e = tnode.children();
if (e != null) {
while (e.hasMoreElements()) {
DefaultMutableTreeNode child = (DefaultMutableTreeNode) e.nextElement();
TreeData data = (TreeData) child.getUserObject();
if (data.toString().equals(comp)) {
tpath = new TreePath(child.getPath());
next = child;
break;
}
}
}
if (next == null) break;
tnode = next;
}
if (tpath != null) {
pTree.setSelectionPath(tpath);
pTree.makeVisible(tpath);
}
}
}
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 JTrees() {
JFrame frame = new JFrame("JTree Demo");
Container c = frame.getContentPane();
c.setLayout(new BorderLayout());
// Create top node of a tree
final DefaultMutableTreeNode top = new DefaultMutableTreeNode("Course");
// Create a subtree UG
final DefaultMutableTreeNode UG = new DefaultMutableTreeNode("UG");
top.add(UG);
final DefaultMutableTreeNode a1 = new DefaultMutableTreeNode("B.E");
UG.add(a1);
final DefaultMutableTreeNode a2 = new DefaultMutableTreeNode("B.C.A");
UG.add(a2);
final DefaultMutableTreeNode a3 = new DefaultMutableTreeNode("B.Sc");
UG.add(a3);
final DefaultMutableTreeNode a4 = new DefaultMutableTreeNode("B.Com");
UG.add(a4);
final DefaultMutableTreeNode a5 = new DefaultMutableTreeNode("B.A");
UG.add(a5);
// Create a subtree PG
final DefaultMutableTreeNode PG = new DefaultMutableTreeNode("PG");
top.add(PG);
final DefaultMutableTreeNode b1 = new DefaultMutableTreeNode("M.E");
PG.add(b1);
final DefaultMutableTreeNode b2 = new DefaultMutableTreeNode("M.C.A");
PG.add(b2);
final DefaultMutableTreeNode b3 = new DefaultMutableTreeNode("M.Sc");
PG.add(b3);
final DefaultMutableTreeNode b4 = new DefaultMutableTreeNode("M.Com");
PG.add(b4);
final DefaultMutableTreeNode b5 = new DefaultMutableTreeNode("M.A");
PG.add(b5);
// Creating tree
final JTree tree = new JTree(top);
int v = ScrollPaneConstants.VERTICAL_SCROLLBAR_AS_NEEDED;
int h = ScrollPaneConstants.HORIZONTAL_SCROLLBAR_AS_NEEDED;
final JScrollPane jsp = new JScrollPane(tree, v, h);
c.add(jsp, BorderLayout.CENTER);
final JTextField text = new JTextField("", 20);
c.add(text, BorderLayout.SOUTH);
tree.addMouseListener(
new MouseAdapter() {
public void mouseClicked(MouseEvent me) {
TreePath tp = tree.getPathForLocation(me.getX(), me.getY());
if (tp != null) text.setText(tp.toString());
else text.setText("");
}
});
if (top.children() == b1) {
System.out.println("M.E Cource Selected");
}
frame.setSize(300, 200);
frame.setVisible(true);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
public void valueChanged(TreeSelectionEvent event) {
// DefaultMutableTreeNode node = new DefaultMutableTreeNode();
DefaultMutableTreeNode node;
TreePath paths[] = event.getPaths();
// Statistical variables
Object bestNode;
Object worstNode;
double avgFitness = 0;
double bestFitness = -1;
double worstFitness = -1;
// Update Selection Panel to reflect current selections
for (int i = 0; i < paths.length; i++) {
// If a parent node is selected, select all children nodes
DefaultMutableTreeNode tmpNode = (DefaultMutableTreeNode) paths[i].getLastPathComponent();
// If Root is selected, clear all selections
if (tmpNode.isRoot()) {
tree.clearSelection();
selectedChildrenPaths.removeAllElements();
break;
}
if (tmpNode.getAllowsChildren()) {
ArrayList tmpNodeChildren = new ArrayList();
for (Enumeration e = tmpNode.children(); e.hasMoreElements(); ) {
DefaultMutableTreeNode childNode = (DefaultMutableTreeNode) e.nextElement();
TreePath treePath = new TreePath(childNode.getPath());
if (event.isAddedPath(paths[i])) {
if (!selectedChildrenPaths.contains(treePath))
selectedChildrenPaths.addElement(treePath);
} else selectedChildrenPaths.removeElement(treePath);
}
// TreePath [] treePaths = new TreePath[tmpNodeChildren.size()];
// if ( event.isAddedPath(paths[i]) )
// tree.addSelectionPaths( (TreePath []) tmpNodeChildren.toArray(treePaths) );
// else
// tree.removeSelectionPaths( (TreePath[]) tmpNodeChildren.toArray(treePaths) );
// Collapse parent view -- commented for future use, DO NOT IMPLEMENT AS SHOWN
// tree.collapsePath( paths[i] );
} else // only a single node is being examined
{
if (event.isAddedPath(paths[i])) {
if (!selectedChildrenPaths.contains(paths[i]))
selectedChildrenPaths.addElement(paths[i]);
} else selectedChildrenPaths.removeElement(paths[i]);
}
}
// If selections exist, enabled "Save Selected" menu item
if (selectedChildrenPaths.size() > 0) miSave.setEnabled(true);
else miSave.setEnabled(false);
// Calculate selection information statistics
for (int j = 0; j < selectedChildrenPaths.size(); j++) {
double fitness = 0;
node =
(DefaultMutableTreeNode)
((TreePath) selectedChildrenPaths.elementAt(j)).getLastPathComponent();
fitness = gaMonitor.getFitness(node.getUserObject());
avgFitness += fitness;
if (fitness > bestFitness || bestFitness == -1) {
bestFitness = fitness;
bestNode = node;
}
if (fitness < worstFitness || worstFitness == -1) {
worstFitness = fitness;
worstNode = node;
}
}
// Finialize Statistics
if (bestFitness != -1) avgFitness = avgFitness / (double) selectedChildrenPaths.size();
// Panel may not exist! If null, ignore
if (selectionStatsPanel != null) {
if (bestFitness != -1)
selectionStatsPanel.setSelectionStats(
selectedChildrenPaths.size(), avgFitness, bestFitness, worstFitness);
else selectionStatsPanel.setEmptySelection();
}
}