131 lines
4.3 KiB
Java
131 lines
4.3 KiB
Java
/*
|
|
* Copyright (c) 2012, 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
|
|
* @key headful
|
|
* @bug 6505523
|
|
* @summary NullPointerException in BasicTreeUI when a node is removed by expansion listener
|
|
* @author Alexandr Scherbatiy
|
|
* @run main bug6505523
|
|
*/
|
|
import java.awt.Point;
|
|
import java.awt.Rectangle;
|
|
import java.awt.Robot;
|
|
import java.awt.event.InputEvent;
|
|
import javax.swing.JFrame;
|
|
import javax.swing.JScrollPane;
|
|
import javax.swing.JTree;
|
|
import javax.swing.SwingUtilities;
|
|
import javax.swing.event.TreeExpansionEvent;
|
|
import javax.swing.event.TreeExpansionListener;
|
|
import javax.swing.tree.DefaultMutableTreeNode;
|
|
import javax.swing.tree.DefaultTreeModel;
|
|
import javax.swing.tree.TreeNode;
|
|
|
|
public class bug6505523 {
|
|
|
|
private static JTree tree;
|
|
|
|
public static void main(String[] args) throws Exception {
|
|
Robot robot = new Robot();
|
|
robot.setAutoDelay(50);
|
|
|
|
SwingUtilities.invokeAndWait(new Runnable() {
|
|
|
|
@Override
|
|
public void run() {
|
|
createAndShowGUI();
|
|
}
|
|
});
|
|
|
|
robot.waitForIdle();
|
|
|
|
Point point = getRowPointToClick(2);
|
|
robot.mouseMove(point.x, point.y);
|
|
robot.mousePress(InputEvent.BUTTON1_MASK);
|
|
robot.mouseRelease(InputEvent.BUTTON1_MASK);
|
|
|
|
robot.waitForIdle();
|
|
|
|
}
|
|
|
|
private static Point getRowPointToClick(final int row) throws Exception {
|
|
|
|
final Point[] result = new Point[1];
|
|
|
|
SwingUtilities.invokeAndWait(new Runnable() {
|
|
|
|
@Override
|
|
public void run() {
|
|
Rectangle rect = tree.getRowBounds(row);
|
|
Point point = new Point(rect.x - 5, rect.y + rect.height / 2);
|
|
SwingUtilities.convertPointToScreen(point, tree);
|
|
result[0] = point;
|
|
}
|
|
});
|
|
|
|
return result[0];
|
|
}
|
|
|
|
private static void createAndShowGUI() {
|
|
final DefaultMutableTreeNode root = new DefaultMutableTreeNode("Problem with NPE under JDK 1.6");
|
|
final DefaultMutableTreeNode problematic = new DefaultMutableTreeNode("Expand me and behold a NPE in stderr");
|
|
problematic.add(new DefaultMutableTreeNode("some content"));
|
|
root.add(new DefaultMutableTreeNode("irrelevant..."));
|
|
root.add(problematic);
|
|
|
|
final DefaultTreeModel model = new DefaultTreeModel(root);
|
|
tree = new JTree(model);
|
|
tree.setRootVisible(true);
|
|
tree.setShowsRootHandles(true);
|
|
tree.expandRow(0);
|
|
tree.collapseRow(2);
|
|
|
|
// this is critical - without dragEnabled everything works
|
|
tree.setDragEnabled(true);
|
|
|
|
tree.addTreeExpansionListener(new TreeExpansionListener() {
|
|
|
|
@Override
|
|
public void treeExpanded(TreeExpansionEvent event) {
|
|
TreeNode parent = problematic.getParent();
|
|
if (parent instanceof DefaultMutableTreeNode) {
|
|
model.removeNodeFromParent(problematic);
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public void treeCollapsed(TreeExpansionEvent event) {
|
|
}
|
|
});
|
|
|
|
JFrame frame = new JFrame("JTree Problem");
|
|
frame.add(new JScrollPane(tree));
|
|
frame.setSize(500, 300);
|
|
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
|
|
frame.setLocationRelativeTo(null);
|
|
frame.setVisible(true);
|
|
}
|
|
}
|