8074500: java.awt.Checkbox.setState() call causes ItemEvent to be filed

Reviewed-by: alexsch, azvegint

src/macosx/classes/sun/lwawt/LWCheckboxPeer.java

 /*
- * Copyright (c) 2011, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2011, 2015, 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
@@ -132,7 +132,9 @@ final class LWCheckboxPeer
     @Override
     public void setState(final boolean state) {
         synchronized (getDelegateLock()) {
+            getDelegate().getCurrentButton().removeItemListener(this);
             getDelegate().setSelected(state);
+            getDelegate().getCurrentButton().addItemListener(this);
         }
         repaintPeer();
     }

test/java/awt/Checkbox/SetStateExcessEvent/SetStateExcessEvent.java

+/*
+ * Copyright (c) 2015, 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.
+ */
+
+import java.awt.Checkbox;
+import java.awt.CheckboxGroup;
+import java.awt.Frame;
+import java.awt.GridBagLayout;
+import java.awt.Robot;
+
+/**
+ * @test
+ * @bug 8074500
+ * @summary Checkbox.setState() call should not post ItemEvent
+ * @author Sergey Bylokhov
+ */
+public final class SetStateExcessEvent {
+
+    private static boolean failed;
+
+    public static void main(final String[] args) throws Exception {
+        final Robot robot = new Robot();
+        final CheckboxGroup group = new CheckboxGroup();
+        final Checkbox[] cbs = {new Checkbox("checkbox1", true, group),
+                                new Checkbox("checkbox2", false, group),
+                                new Checkbox("checkbox3", true, group),
+
+                                new Checkbox("checkbox4", true),
+                                new Checkbox("checkbox5", false),
+                                new Checkbox("checkbox6", true)};
+        final Frame frame = new Frame();
+        frame.setLayout(new GridBagLayout());
+        try {
+            for (final Checkbox cb : cbs) {
+                cb.addItemListener(e -> {
+                    failed = true;
+                });
+            }
+            for (final Checkbox cb : cbs) {
+                frame.add(cb);
+            }
+            frame.pack();
+
+            for (final Checkbox cb : cbs) {
+                cb.setState(!cb.getState());
+            }
+
+            for (final Checkbox cb : cbs) {
+                group.setSelectedCheckbox(cb);
+            }
+            robot.waitForIdle();
+        } finally {
+            frame.dispose();
+        }
+        if (failed) {
+            throw new RuntimeException("Listener should not be called");
+        }
+        System.out.println("Test passed");
+    }
+}