/* * @(#)TreeDemo.java 1.13 05/11/17 * * Copyright (c) 2006 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: * * -Redistribution of source code must retain the above copyright notice, this * list of conditions and the following disclaimer. * * -Redistribution 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. * * 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 MIDROSYSTEMS, INC. ("SUN") * AND ITS LICENSORS SHALL NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE * AS A RESULT OF USING, MODIFYING OR DISTRIBUTING THIS 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 THIS SOFTWARE, * EVEN IF SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. * * You acknowledge that this software is not designed, licensed or intended * for use in the design, construction, operation or maintenance of any * nuclear facility. */ /* * @(#)TreeDemo.java 1.13 05/11/17 */ 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 1.13 11/17/05 * @author Jeff Dinkins */ public class TreeDemo extends DemoModule { JTree tree; /** * 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, "UTF-8"); 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) { } tree = new JTree(top) { public Insets getInsets() { return new Insets(5,5,5,5); } }; tree.setEditable(true); return new JScrollPane(tree); } void updateDragEnabled(boolean dragEnabled) { tree.setDragEnabled(dragEnabled); } }
