| /* |
| * |
| * Copyright (c) 2007, Oracle and/or its affiliates. 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. |
| * |
| * - 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. |
| * |
| * - Neither the name of Oracle nor the names of its |
| * contributors may be used to endorse or promote products derived |
| * from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT OWNER 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. |
| */ |
| |
| |
| 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 |
| * |
| * @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); |
| } |
| |
| } |