Insert tree node
/*
* 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();
}
}
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