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/*
* Copyright (c) 2002, 2023, 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 4745001
* @summary JTree with setLargeModel(true) not display correctly
* when we expand/collapse nodes
* @key headful
* @run main bug4745001
*/
import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.Robot;
import javax.swing.JFrame;
import javax.swing.JTree;
import javax.swing.tree.DefaultMutableTreeNode;
import javax.swing.tree.DefaultTreeModel;
import javax.swing.tree.TreePath;
import javax.swing.event.TreeExpansionEvent;
import javax.swing.event.TreeExpansionListener;
import javax.swing.SwingUtilities;
public class bug4745001 {
static JTree tree;
static JFrame fr;
boolean stateChanged;
public static void main(String[] args) throws Exception {
Robot robot = new Robot();
robot.setAutoDelay(100);
bug4745001 test = new bug4745001();
try {
SwingUtilities.invokeAndWait(() -> test.init());
robot.waitForIdle();
robot.delay(1000);
test.start();
robot.delay(1000);
test.destroy();
} finally {
SwingUtilities.invokeAndWait(() -> {
if (fr != null) {
fr.dispose();
}
});
}
}
public void init() {
fr = new JFrame("Test");
fr.getContentPane().setLayout(new FlowLayout());
tree = new JTree();
tree.setRowHeight(20);
tree.setLargeModel(true);
tree.setPreferredSize(new Dimension(100, 400));
tree.setRootVisible(false);
tree.setShowsRootHandles(true);
DefaultMutableTreeNode root = new DefaultMutableTreeNode("");
DefaultMutableTreeNode a = new DefaultMutableTreeNode("a");
DefaultMutableTreeNode b = new DefaultMutableTreeNode("b");
DefaultMutableTreeNode c = new DefaultMutableTreeNode("c");
root.add(a);
root.add(b);
root.add(c);
b.add(new DefaultMutableTreeNode("b1"));
c.add(new DefaultMutableTreeNode("c2"));
tree.setModel(new DefaultTreeModel(root));
fr.getContentPane().add(tree);
tree.addTreeExpansionListener(new TreeExpansionListener() {
public void treeExpanded(TreeExpansionEvent e) {
TreePath path = e.getPath();
if (path != null) {
DefaultMutableTreeNode node =
(DefaultMutableTreeNode)path.getLastPathComponent();
node.removeAllChildren();
String s = (String)node.getUserObject();
node.add(new DefaultMutableTreeNode(s + "1"));
node.add(new DefaultMutableTreeNode(s + "2"));
node.add(new DefaultMutableTreeNode(s + "3"));
DefaultTreeModel model = (DefaultTreeModel)tree.getModel();
model.nodeStructureChanged(node);
synchronized (bug4745001.this) {
stateChanged = true;
bug4745001.this.notifyAll();
}
}
}
public void treeCollapsed(TreeExpansionEvent e) {
synchronized (bug4745001.this) {
stateChanged = true;
bug4745001.this.notifyAll();
}
}
});
fr.pack();
fr.setVisible(true);
}
void changeNodeStateForRow(final int row, final boolean expand) throws Exception {
try {
stateChanged = false;
SwingUtilities.invokeAndWait(new Runnable() {
public void run() {
try {
if (expand) {
tree.expandRow(row);
} else {
tree.collapseRow(row);
}
} catch (Exception ex) {
ex.printStackTrace();
}
}
});
synchronized (this) {
while (!stateChanged) {
bug4745001.this.wait();
}
}
} catch (Throwable t) {
t.printStackTrace();
}
}
public void start() throws Exception {
// expand node "c"
changeNodeStateForRow(2, true);
// expand node "b"
changeNodeStateForRow(1, true);
// collapse node "c"
changeNodeStateForRow(1, false);
}
String[] expected = new String[] {"a", "b", "c", "c1", "c2", "c3"};
public void destroy() {
for (int i = 0; i < expected.length; i++) {
Object obj = tree.getPathForRow(i).getLastPathComponent();
if (!obj.toString().equals(expected[i])) {
throw new RuntimeException("Unexpected node at row "+i);
}
}
}
}
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