7022041: TitleBorder Null Pointer Exception

Added check if getTitleFont() and getTitleColor() don't return null

Reviewed-by: alexsch

jdk/src/share/classes/javax/swing/border/TitledBorder.java

@@ -440,7 +440,7 @@ public class TitledBorder extends AbstractBorder
      * @return the title-font of the titled border
      */
     public Font getTitleFont() {
-        return titleFont;
+        return titleFont == null ? UIManager.getFont("TitledBorder.font") : titleFont;
     }
 
     /**
@@ -449,7 +449,7 @@ public class TitledBorder extends AbstractBorder
      * @return the title-color of the titled border
      */
     public Color getTitleColor() {
-        return titleColor;
+        return titleColor == null ? UIManager.getColor("TitledBorder.titleColor") : titleColor;
     }
 
 
@@ -681,10 +681,6 @@ public class TitledBorder extends AbstractBorder
         if (font != null) {
             return font;
         }
-        font = UIManager.getFont("TitledBorder.font");
-        if (font != null) {
-            return font;
-        }
         if (c != null) {
             font = c.getFont();
             if (font != null) {
@@ -699,10 +695,6 @@ public class TitledBorder extends AbstractBorder
         if (color != null) {
             return color;
         }
-        color = UIManager.getColor("TitledBorder.titleColor");
-        if (color != null) {
-            return color;
-        }
         return (c != null)
                 ? c.getForeground()
                 : null;

jdk/test/javax/swing/border/Test7022041.java

@@ -0,0 +1,133 @@
+/*
+ * Copyright 2012 Red Hat, Inc. All Rights Reserved.
+ * 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.
+ */
+
+import java.awt.Color;
+import java.awt.Font;
+
+import javax.swing.border.EmptyBorder;
+import javax.swing.border.TitledBorder;
+import javax.swing.UIManager;
+import javax.swing.UnsupportedLookAndFeelException;
+
+/* @test
+ * @bug 7022041
+ * @summary This test check the behaviour of getTitleFont() and getTitleColor()
+ *          methods of the TitledBorder class.
+ * @author Pavel Tisnovsky
+ */
+public class Test7022041 {
+
+    public static void main(String[] args) throws Exception {
+        UIManager.LookAndFeelInfo[] installedLookAndFeels = UIManager.getInstalledLookAndFeels();
+        // try to test all installed Look and Feels
+        for (UIManager.LookAndFeelInfo lookAndFeel : installedLookAndFeels) {
+            String name = lookAndFeel.getName();
+            System.out.println("Testing " + name);
+            // Some Look and Feels work only when test is run in a GUI environment
+            // (GTK+ LAF is an example)
+            try {
+                UIManager.setLookAndFeel(lookAndFeel.getClassName());
+                checkTitleColor();
+                System.out.println("    titleColor test ok");
+                checkTitleFont();
+                System.out.println("    titleFont test ok");
+            }
+            catch (UnsupportedLookAndFeelException e) {
+                System.out.println("    Note: LookAndFeel " + name
+                                 + " is not supported on this configuration");
+            }
+        }
+    }
+
+    /**
+      * Check behaviour of method TitledBorder.getTitleColor()
+      */
+    private static void checkTitleColor() {
+        TitledBorder titledBorder = new TitledBorder(new EmptyBorder(1, 1, 1, 1));
+        Color defaultColor = UIManager.getLookAndFeelDefaults().getColor("TitledBorder.titleColor");
+        Color titledBorderColor = titledBorder.getTitleColor();
+
+        // check default configuration
+        if (defaultColor == null) {
+            if (titledBorderColor == null) {
+                return;
+            }
+            else {
+                throw new RuntimeException("TitledBorder default color should be null");
+            }
+        }
+        if (!defaultColor.equals(titledBorderColor)) {
+            throw new RuntimeException("L&F default color " + defaultColor.toString()
+                                     + " differs from TitledBorder color " + titledBorderColor.toString());
+        }
+
+        // title color is explicitly specified
+        Color color = Color.green;
+        titledBorder.setTitleColor(color);
+        if (!color.equals(titledBorder.getTitleColor())) {
+            throw new RuntimeException("TitledBorder color should be " + color.toString());
+        }
+
+        // title color is unspecified
+        titledBorder.setTitleColor(null);
+        if (!defaultColor.equals(titledBorder.getTitleColor())) {
+            throw new RuntimeException("L&F default color " + defaultColor.toString()
+                                     + " differs from TitledBorder color " + titledBorderColor.toString());
+        }
+    }
+
+    /**
+      * Check behaviour of method TitledBorder.getTitleFont()
+      */
+    private static void checkTitleFont() {
+        TitledBorder titledBorder = new TitledBorder(new EmptyBorder(1, 1, 1, 1));
+        Font defaultFont = UIManager.getLookAndFeelDefaults().getFont("TitledBorder.font");
+        Font titledBorderFont = titledBorder.getTitleFont();
+
+        // check default configuration
+        if (defaultFont == null) {
+            if (titledBorderFont == null) {
+                return;
+            }
+            else {
+                throw new RuntimeException("TitledBorder default font should be null");
+            }
+        }
+        if (!defaultFont.equals(titledBorderFont)) {
+            throw new RuntimeException("L&F default font " + defaultFont.toString()
+                                     + " differs from TitledBorder font " + titledBorderFont.toString());
+        }
+
+        // title font is explicitly specified
+        Font font = new Font("Dialog", Font.PLAIN, 10);
+        titledBorder.setTitleFont(font);
+        if (!font.equals(titledBorder.getTitleFont())) {
+            throw new RuntimeException("TitledBorder font should be " + font.toString());
+        }
+
+        // title Font is unspecified
+        titledBorder.setTitleFont(null);
+        if (!defaultFont.equals(titledBorder.getTitleFont())) {
+            throw new RuntimeException("L&F default font " + defaultFont.toString()
+                                     + " differs from TitledBorder font " + titledBorderFont.toString());
+        }
+    }
+}
+