JTreeDemo.java Source code

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Here is the source code for JTreeDemo.java

Source

/*
 * Copyright (c) Ian F. Darwin, http://www.darwinsys.com/, 1996-2002.
 * All rights reserved. Software written by Ian F. Darwin and others.
 * $Id: LICENSE,v 1.8 2004/02/09 03:33:38 ian Exp $
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS''
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 * 
 * Java, the Duke mascot, and all variants of Sun's Java "steaming coffee
 * cup" logo are trademarks of Sun Microsystems. Sun's, and James Gosling's,
 * pioneering role in inventing and promulgating (and standardizing) the Java 
 * language and environment is gratefully acknowledged.
 * 
 * The pioneering role of Dennis Ritchie and Bjarne Stroustrup, of AT&T, for
 * inventing predecessor languages C and C++ is also gratefully acknowledged.
 */

import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTree;
import javax.swing.tree.DefaultMutableTreeNode;
import javax.swing.tree.DefaultTreeModel;

/**
 * Simple JFC JTree demo
 * 
 * @version $Id: JTreeDemo.java,v 1.4 2002/08/25 01:31:29 ian Exp $
 */
public class JTreeDemo extends JFrame {
    JButton addButton, quitButton;

    JTree myTree;

    DefaultMutableTreeNode root, child;

    /** "main program" method - construct and show */
    public static void main(String[] av) {
        // create a JTreeDemo object, tell it to show up
        new JTreeDemo().setVisible(true);
    }

    /** Construct the object including its GUI */
    public JTreeDemo() {
        super("JTreeDemo");
        Container cp = getContentPane();
        cp.setLayout(new BorderLayout());

        root = new DefaultMutableTreeNode("root");

        child = new DefaultMutableTreeNode("Colors");
        root.add(child);
        child.add(new DefaultMutableTreeNode("Cyan"));
        child.add(new DefaultMutableTreeNode("Magenta"));
        child.add(new DefaultMutableTreeNode("Yellow"));
        child.add(new DefaultMutableTreeNode("Black"));

        myTree = new JTree(root);

        // cp.add(BorderLayout.CENTER, myTree);
        //JScrollPane scroller = new JScrollPane();
        //scroller.getViewport().add(myTree);
        JScrollPane scroller = new JScrollPane(myTree);
        cp.add(BorderLayout.CENTER, scroller);

        cp.add(BorderLayout.NORTH, addButton = new JButton("Add"));
        addButton.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {

                // Insert more nodes into the tree
                child = new DefaultMutableTreeNode("Flavors");
                child.add(new DefaultMutableTreeNode("Java"));
                child.add(new DefaultMutableTreeNode("Espresso"));
                child.add(new DefaultMutableTreeNode("Hey Joe!"));
                child.add(new DefaultMutableTreeNode("Charcoal"));
                child.add(new DefaultMutableTreeNode("Paint Remover"));

                // Notify the model, which will add it and create an event, and
                // send it up the tree...

                ((DefaultTreeModel) myTree.getModel()).insertNodeInto(child, root, 0);
            }
        });

        cp.add(BorderLayout.SOUTH, quitButton = new JButton("Exit"));
        quitButton.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                setVisible(false);
                dispose();
                System.exit(0);
            }
        });
        addWindowListener(new WindowAdapter() {
            public void windowClosing(WindowEvent e) {
                setVisible(false);
                dispose();
                System.exit(0);
            }
        });
        pack();
    }
}