6741426: ClassCastException from ComboBoxEditableState (Nimbus LaF) in JDK 1.6.0_10 RC

Reviewed-by: rupashka

src/share/classes/javax/swing/plaf/nimbus/skin.laf

@@ -4202,7 +4202,8 @@
             <stateType key="Focused"/>
             <stateType key="Editable">
                 <codeSnippet><![CDATA[
-                          return ((JComboBox)c).isEditable();]]></codeSnippet>
+        return c instanceof JComboBox && ((JComboBox)c).isEditable();
+                ]]></codeSnippet>
             </stateType>
          </stateTypes>
          <contentMargins top="0" bottom="0" left="0" right="0"/>
@@ -16160,12 +16161,14 @@
             <stateType key="Disabled"/>
             <stateType key="Indeterminate">
                <codeSnippet><![CDATA[
-                        return ((JProgressBar)c).isIndeterminate();
+        return c instanceof JProgressBar &&
+               ((JProgressBar)c).isIndeterminate();
                ]]></codeSnippet>
             </stateType>
             <stateType key="Finished">
                <codeSnippet><![CDATA[
-                        return ((JProgressBar)c).getPercentComplete() == 1.0;
+        return c instanceof JProgressBar &&
+               ((JProgressBar)c).getPercentComplete() == 1.0;
                 ]]></codeSnippet>
             </stateType>
          </stateTypes>
@@ -25845,26 +25848,26 @@
          <stateTypes>
             <stateType key="North">
                <codeSnippet><![CDATA[
-        JToolBar toolbar = (JToolBar)c;
-        return NimbusLookAndFeel.resolveToolbarConstraint(toolbar) == BorderLayout.NORTH;
+        return (c instanceof JToolBar) &&
+               NimbusLookAndFeel.resolveToolbarConstraint((JToolBar)c) == BorderLayout.NORTH;
                ]]></codeSnippet>
             </stateType>
             <stateType key="East">
                <codeSnippet><![CDATA[
-        JToolBar toolbar = (JToolBar)c;
-        return NimbusLookAndFeel.resolveToolbarConstraint(toolbar) == BorderLayout.EAST;
+        return (c instanceof JToolBar) &&
+               NimbusLookAndFeel.resolveToolbarConstraint((JToolBar)c) == BorderLayout.EAST;
                ]]></codeSnippet>
             </stateType>
             <stateType key="West">
                <codeSnippet><![CDATA[
-        JToolBar toolbar = (JToolBar)c;
-        return NimbusLookAndFeel.resolveToolbarConstraint(toolbar) == BorderLayout.WEST;
+        return (c instanceof JToolBar) &&
+               NimbusLookAndFeel.resolveToolbarConstraint((JToolBar)c) == BorderLayout.WEST;
                ]]></codeSnippet>
             </stateType>
             <stateType key="South">
                <codeSnippet><![CDATA[
-        JToolBar toolbar = (JToolBar)c;
-        return NimbusLookAndFeel.resolveToolbarConstraint(toolbar) == BorderLayout.SOUTH;
+        return (c instanceof JToolBar) &&
+               NimbusLookAndFeel.resolveToolbarConstraint((JToolBar)c) == BorderLayout.SOUTH;
                ]]></codeSnippet>
             </stateType>
          </stateTypes>

test/javax/swing/plaf/nimbus/Test6741426.java

+/*
+ * Copyright 2008 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+/* @test
+   @bug 6741426
+   @summary Tests reusing Nimbus borders across different components (JComboBox border set on a JTextField)
+   @author Peter Zhelezniakov
+   @run main Test6741426
+*/
+
+import com.sun.java.swing.plaf.nimbus.NimbusLookAndFeel;
+import javax.swing.*;
+import java.awt.image.BufferedImage;
+
+
+public class Test6741426 implements Runnable {
+
+    static final int WIDTH = 160;
+    static final int HEIGHT = 80;
+
+    @Override public void run() {
+        JComboBox cb = new JComboBox();
+        JTextField tf = new JTextField();
+        tf.setBorder(cb.getBorder());
+        BufferedImage img =
+                new BufferedImage(WIDTH, HEIGHT, BufferedImage.TYPE_INT_ARGB);
+        tf.setSize(WIDTH, HEIGHT);
+        tf.paint(img.getGraphics());
+    }
+
+    public static void main(String[] args) throws Exception {
+        UIManager.setLookAndFeel(new NimbusLookAndFeel());
+        SwingUtilities.invokeAndWait(new Test6741426());
+    }
+}