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Java Source | 2002-09-06 | 4.1 KB | 138 lines |
- /*
- * Copyright (c) 2002 Sun Microsystems, Inc. All Rights Reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * -Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * -Redistribution in binary form must reproduct the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the distribution.
- *
- * Neither the name of Sun Microsystems, Inc. or the names of contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * This software is provided "AS IS," without a warranty of any kind. ALL
- * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING
- * ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE
- * OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN AND ITS LICENSORS SHALL NOT
- * BE LIABLE FOR ANY DAMAGES OR LIABILITIES SUFFERED BY LICENSEE AS A RESULT
- * OF OR RELATING TO USE, MODIFICATION OR DISTRIBUTION OF THE SOFTWARE OR ITS
- * DERIVATIVES. IN NO EVENT WILL SUN OR ITS LICENSORS BE LIABLE FOR ANY LOST
- * REVENUE, PROFIT OR DATA, OR FOR DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL,
- * INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY
- * OF LIABILITY, ARISING OUT OF THE USE OF OR INABILITY TO USE SOFTWARE, EVEN
- * IF SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
- *
- * You acknowledge that Software is not designed, licensed or intended for
- * use in the design, construction, operation or maintenance of any nuclear
- * facility.
- */
-
- /*
- * @(#)TreeDemo.java 1.6 02/06/13
- */
-
-
- import javax.swing.*;
- import javax.swing.event.*;
- import javax.swing.tree.*;
- import javax.accessibility.*;
-
- import java.awt.*;
- import java.awt.event.*;
- import java.beans.*;
- import java.util.*;
- import java.io.*;
- import java.applet.*;
- import java.net.*;
-
- /**
- * JTree Demo
- *
- * @version 1.6 06/13/02
- * @author Jeff Dinkins
- */
- public class TreeDemo extends DemoModule {
-
- /**
- * main method allows us to run as a standalone demo.
- */
- public static void main(String[] args) {
- TreeDemo demo = new TreeDemo(null);
- demo.mainImpl();
- }
-
- /**
- * TreeDemo Constructor
- */
- public TreeDemo(SwingSet2 swingset) {
- // Set the title for this demo, and an icon used to represent this
- // demo inside the SwingSet2 app.
- super(swingset, "TreeDemo", "toolbar/JTree.gif");
-
- getDemoPanel().add(createTree(), BorderLayout.CENTER);
- }
-
- public JScrollPane createTree() {
- DefaultMutableTreeNode top = new DefaultMutableTreeNode(getString("TreeDemo.music"));
- DefaultMutableTreeNode catagory = null ;
- DefaultMutableTreeNode artist = null;
- DefaultMutableTreeNode record = null;
-
- // open tree data
- URL url = getClass().getResource("/resources/tree.txt");
-
- try {
- // convert url to buffered string
- InputStream is = url.openStream();
- InputStreamReader isr = new InputStreamReader(is);
- BufferedReader reader = new BufferedReader(isr);
-
- // read one line at a time, put into tree
- String line = reader.readLine();
- while(line != null) {
- // System.out.println("reading in: ->" + line + "<-");
- char linetype = line.charAt(0);
- switch(linetype) {
- case 'C':
- catagory = new DefaultMutableTreeNode(line.substring(2));
- top.add(catagory);
- break;
- case 'A':
- if(catagory != null) {
- catagory.add(artist = new DefaultMutableTreeNode(line.substring(2)));
- }
- break;
- case 'R':
- if(artist != null) {
- artist.add(record = new DefaultMutableTreeNode(line.substring(2)));
- }
- break;
- case 'S':
- if(record != null) {
- record.add(new DefaultMutableTreeNode(line.substring(2)));
- }
- break;
- default:
- break;
- }
- line = reader.readLine();
- }
- } catch (IOException e) {
- }
-
- JTree tree = new JTree(top) {
- public Insets getInsets() {
- return new Insets(5,5,5,5);
- }
- };
- return new JScrollPane(tree);
- }
-
- }
-