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/*
* Copyright (c) 1999, 2025, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/*
* @test
* @bug 4199472
* @summary Tests that node changed for the root of the tree update the
* structure.
* @run main NodeChangedTest
*/
import javax.swing.JTree;
import javax.swing.tree.DefaultMutableTreeNode;
import javax.swing.tree.DefaultTreeModel;
public class NodeChangedTest {
public static void main(String[] args) {
// Create 3 nodes
final DefaultMutableTreeNode root = new DefaultMutableTreeNode("root",
true);
final DefaultMutableTreeNode child = new DefaultMutableTreeNode("child",
true);
final DefaultMutableTreeNode leaf = new DefaultMutableTreeNode("leaf",
false);
root.add(child);
child.add(leaf);
final JTree tree = new JTree(root);
// Change the root node
root.setUserObject("New root");
((DefaultTreeModel) tree.getModel()).nodeChanged(root);
// Check
if (!root.getUserObject().toString().equals("New root")) {
throw new RuntimeException("Failed changing root node for default model.");
}
// Change to large model
tree.setLargeModel(true);
tree.setRowHeight(20);
root.setUserObject("root");
tree.setModel(new DefaultTreeModel(root));
root.setUserObject("New root");
((DefaultTreeModel) tree.getModel()).nodeChanged(root);
// Check again
if (!root.getUserObject().toString().equals("New root")) {
throw new RuntimeException("Failed changing root node for large model.");
}
}
}
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