7076791: closed/javax/swing/JColorChooser/Test6827032.java failed on windows

Reviewed-by: rupashka
Contributed-by: alexandr.scherbatiy@oracle.com

test/javax/swing/JColorChooser/Test6827032.java

+/*
+ * Copyright (c) 2007, 2011, 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 6827032
+ * @summary Color chooser with drag enabled shouldn't throw NPE
+ * @author Peter Zhelezniakov
+ * @library ../regtesthelpers
+ */
+
+import sun.awt.SunToolkit;
+
+import java.awt.*;
+import java.awt.event.*;
+
+import javax.swing.*;
+import javax.swing.plaf.nimbus.NimbusLookAndFeel;
+
+
+public class Test6827032 {
+
+    private static volatile Point point;
+    private static JColorChooser cc;
+
+    public static void main(String[] args) throws Exception {
+        UIManager.setLookAndFeel(new NimbusLookAndFeel());
+
+        Robot robot = new Robot();
+        robot.setAutoDelay(50);
+
+        SunToolkit toolkit = (SunToolkit) Toolkit.getDefaultToolkit();
+
+        SwingUtilities.invokeAndWait(new Runnable() {
+            public void run() {
+                createAndShowGUI();
+            }
+        });
+
+        toolkit.realSync();
+
+        SwingUtilities.invokeAndWait(new Runnable() {
+            public void run() {
+                Component previewPanel = Util.findSubComponent(cc, "javax.swing.colorchooser.DefaultPreviewPanel");
+                point = previewPanel.getLocationOnScreen();
+            }
+        });
+
+        point.translate(5, 5);
+
+        robot.mouseMove(point.x, point.y);
+        robot.mousePress(InputEvent.BUTTON1_MASK);
+        robot.mouseRelease(InputEvent.BUTTON1_MASK);
+    }
+
+
+    private static void createAndShowGUI() {
+        JFrame frame = new JFrame(Test6827032.class.getName());
+        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
+        cc = new JColorChooser();
+        cc.setDragEnabled(true);
+        frame.add(cc);
+        frame.pack();
+        frame.setVisible(true);
+    }
+}

test/javax/swing/regtesthelpers/Util.java

@@ -116,4 +116,28 @@ public class Util {
 
         System.out.println("Got OOME");
     }
+
+    /**
+     * Find a sub component by class name.
+     * Always run this method on the EDT thread
+     */
+    public static Component findSubComponent(Component parent, String className) {
+        String parentClassName = parent.getClass().getName();
+
+        if (parentClassName.contains(className)) {
+            return parent;
+        }
+
+        if (parent instanceof Container) {
+            for (Component child : ((Container) parent).getComponents()) {
+                Component subComponent = findSubComponent(child, className);
+
+                if (subComponent != null) {
+                    return subComponent;
+                }
+            }
+        }
+
+        return null;
+    }
 }