8326606: Test javax/swing/text/BoxView/6494356/bug6494356.java performs a synchronization on a value based class

Backport-of: 013aff87ce7ece5cd4676aa452557ea3f222cede

Author: GoeLin

test/jdk/javax/swing/text/BoxView/bug6494356.java

@@ -0,0 +1,135 @@
+/*
+ * Copyright (c) 2011, 2024, 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 6494356
+ * @key headful
+ * @summary Test that BoxView.layout() is not called with negative arguments
+ * @run main bug6494356
+ */
+
+import java.awt.Dimension;
+import java.awt.Toolkit;
+import java.beans.PropertyChangeEvent;
+import java.beans.PropertyChangeListener;
+import java.io.Writer;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.util.concurrent.CountDownLatch;
+import javax.swing.JEditorPane;
+import javax.swing.JFrame;
+import javax.swing.SwingUtilities;
+import javax.swing.text.Element;
+import javax.swing.text.StyleConstants;
+import javax.swing.text.View;
+import javax.swing.text.ViewFactory;
+import javax.swing.text.html.HTML;
+import javax.swing.text.html.HTMLEditorKit;
+import javax.swing.text.html.ParagraphView;
+
+public class bug6494356 {
+    static JEditorPane ep;
+    private static final CountDownLatch latch = new CountDownLatch(1);
+
+    public static void main(final String[] args) throws Exception {
+        final Path file = Path.of("bug6494356.html");
+        try (Writer writer = Files.newBufferedWriter(file)) {
+            writer.write("<p>Paragraph</p>");
+        }
+        try {
+            SwingUtilities.invokeLater(new Runnable() {
+                public void run() {
+                    ep = new JEditorPane();
+                    ep.setEditorKitForContentType("text/html", new MyEditorKit());
+                    ep.addPropertyChangeListener("page", new PropertyChangeListener() {
+                        public void propertyChange(PropertyChangeEvent pce) {
+                            if (pce.getPropertyName().equals("page")) {
+                                latch.countDown();
+                            }
+                        }
+                    });
+                    JFrame f = new JFrame();
+                    f.setTitle("6494356");
+                    f.setSize(new Dimension(
+                        Toolkit.getDefaultToolkit().getScreenSize().width, 600));
+                    f.setContentPane(ep);
+                    f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
+                    f.setVisible(true);
+                    try {
+                        ep.setPage("file:" + file);
+                    } catch (Exception ex) {
+                        testPassed = false;
+                        throw new RuntimeException(ex);
+                    }
+                }
+            });
+
+            latch.await();
+            if (!testPassed) {
+                throw new RuntimeException("test failed.");
+            }
+        } finally {
+            Files.delete(file);
+        }
+        System.out.println("6494356 OK");
+    }
+
+    static volatile boolean testPassed = true;
+
+    static class MyEditorKit extends HTMLEditorKit {
+        static class MyViewFactory extends HTMLFactory {
+            public View create(Element elem) {
+                HTML.Tag tag = (HTML.Tag) elem.getAttributes().getAttribute(
+                        StyleConstants.NameAttribute);
+                if ((tag != null) && (tag == HTML.Tag.P)) {
+                    return new MyParagraphView(elem);
+                } else {
+                    return super.create(elem);
+                }
+            }
+
+            static class MyParagraphView extends ParagraphView {
+                MyParagraphView(Element elem) {
+                    super(elem);
+                }
+
+                protected void layout(int width, int height) {
+                    if ((width < 0) || (height < 0)) {
+                        testPassed = false;
+                        throw new RuntimeException("w=" + width + " h=" + height);
+                    }
+                    super.layout(width, height);
+                }
+            }
+
+        }
+
+        final ViewFactory viewFactory = new MyViewFactory();
+
+        public ViewFactory getViewFactory() {
+            return viewFactory;
+        }
+    }
+
+}
+