1 /* 2 * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 8 * - Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 11 * - Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * - Neither the name of Oracle nor the names of its 16 * contributors may be used to endorse or promote products derived 17 * from this software without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS 20 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 21 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR 23 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 24 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 25 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 26 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 27 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 28 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 29 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /* 33 * This source code is provided to illustrate the usage of a given feature 34 * or technique and has been deliberately simplified. Additional steps 35 * required for a production-quality application, such as security checks, 36 * input validation and proper error handling, might not be present in 37 * this sample code. 38 */ 39 40 41 42 import javax.swing.tree.DefaultTreeModel; 43 import javax.swing.tree.TreeNode; 44 import javax.swing.tree.TreePath; 45 import javax.swing.tree.DefaultMutableTreeNode; 46 import java.awt.Color; 47 48 49 /** 50 * SampleTreeModel extends JTreeModel to extends valueForPathChanged. 51 * This method is called as a result of the user editing a value in 52 * the tree. If you allow editing in your tree, are using TreeNodes 53 * and the user object of the TreeNodes is not a String, then you're going 54 * to have to subclass JTreeModel as this example does. 55 * 56 * @author Scott Violet 57 */ 58 @SuppressWarnings("serial") 59 public class SampleTreeModel extends DefaultTreeModel { 60 61 /** 62 * Creates a new instance of SampleTreeModel with newRoot set 63 * to the root of this model. 64 */ SampleTreeModel(TreeNode newRoot)65 public SampleTreeModel(TreeNode newRoot) { 66 super(newRoot); 67 } 68 69 /** 70 * Subclassed to message setString() to the changed path item. 71 */ 72 @Override valueForPathChanged(TreePath path, Object newValue)73 public void valueForPathChanged(TreePath path, Object newValue) { 74 /* Update the user object. */ 75 DefaultMutableTreeNode aNode = (DefaultMutableTreeNode) path. 76 getLastPathComponent(); 77 SampleData sampleData = (SampleData) aNode.getUserObject(); 78 79 sampleData.setString((String) newValue); 80 /* UUUhhhhh, pretty colors. */ 81 sampleData.setColor(Color.green); 82 83 /* Since we've changed how the data is to be displayed, message 84 nodeChanged. */ 85 nodeChanged(aNode); 86 } 87 } 88