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/*
Swing, Second Edition
by Matthew Robinson, Pavel Vorobiev
*/
import java.awt.*;
import java.awt.event.*;
import java.util.*;
import javax.swing.*;
import javax.swing.tree.*;
import javax.swing.event.*;
public class Tree1
extends JFrame
{
protected JTree m_tree = null;
protected DefaultTreeModel m_model = null;
protected JTextField m_display;
public Tree1()
{
super("Sample Tree [OID]");
setSize(400, 300);
Object[] nodes = new Object[5];
DefaultMutableTreeNode top = new DefaultMutableTreeNode(
new OidNode(1, "ISO"));
DefaultMutableTreeNode parent = top;
nodes[0] = top;
DefaultMutableTreeNode node = new DefaultMutableTreeNode(
new OidNode(0, "standard"));
parent.add(node);
node = new DefaultMutableTreeNode(new OidNode(2,
"member-body"));
parent.add(node);
node = new DefaultMutableTreeNode(new OidNode(3, "org"));
parent.add(node);
parent = node;
nodes[1] = parent;
node = new DefaultMutableTreeNode(new OidNode(6, "dod"));
parent.add(node);
parent = node;
nodes[2] = parent;
node = new DefaultMutableTreeNode(new OidNode(1,
"internet"));
parent.add(node);
parent = node;
nodes[3] = parent;
node = new DefaultMutableTreeNode(new OidNode(1,
"directory"));
parent.add(node);
node = new DefaultMutableTreeNode(new OidNode(2,
"mgmt"));
parent.add(node);
nodes[4] = node;
node.add(new DefaultMutableTreeNode(new OidNode(1,
"mib-2")));
node = new DefaultMutableTreeNode(new OidNode(3,
"experimental"));
parent.add(node);
node = new DefaultMutableTreeNode(new OidNode(4,
"private"));
node.add(new DefaultMutableTreeNode(new OidNode(1,
"enterprises")));
parent.add(node);
node = new DefaultMutableTreeNode(new OidNode(5,
"security"));
parent.add(node);
node = new DefaultMutableTreeNode(new OidNode(6,
"snmpV2"));
parent.add(node);
node = new DefaultMutableTreeNode(new OidNode(7,
"mail"));
parent.add(node);
m_model = new DefaultTreeModel(top);
m_tree = new JTree(m_model);
DefaultTreeCellRenderer renderer = new
DefaultTreeCellRenderer();
renderer.setOpenIcon(new ImageIcon("opened.gif"));
renderer.setClosedIcon(new ImageIcon("closed.gif"));
renderer.setLeafIcon(new ImageIcon("leaf.gif"));
m_tree.setCellRenderer(renderer);
m_tree.setShowsRootHandles(true);
m_tree.setEditable(false);
TreePath path = new TreePath(nodes);
m_tree.setSelectionPath(path);
m_tree.addTreeSelectionListener(new
OidSelectionListener());
JScrollPane s = new JScrollPane();
s.getViewport().add(m_tree);
getContentPane().add(s, BorderLayout.CENTER);
m_display = new JTextField();
m_display.setEditable(false);
getContentPane().add(m_display, BorderLayout.SOUTH);
WindowListener wndCloser = new WindowAdapter()
{
public void windowClosing(WindowEvent e)
{
System.exit(0);
}
};
addWindowListener(wndCloser);
setVisible(true);
}
public static void main(String argv[])
{
new Tree1();
}
class OidSelectionListener
implements TreeSelectionListener
{
public void valueChanged(TreeSelectionEvent e)
{
TreePath path = e.getPath();
Object[] nodes = path.getPath();
String oid = "";
for (int k=0; k<nodes.length; k++)
{
DefaultMutableTreeNode node =
(DefaultMutableTreeNode)nodes[k];
OidNode nd = (OidNode)node.getUserObject();
oid += "."+nd.getId();
}
m_display.setText(oid);
}
}
}
class OidNode
{
protected int m_id;
protected String m_name;
public OidNode(int id, String name)
{
m_id = id;
m_name = name;
}
public int getId()
{
return m_id;
}
public String getName()
{
return m_name;
}
public String toString()
{
return m_name;
}
}
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