7034614: The insets of TitledBorder vary, will be modified by another method, in JDK7

Reviewed-by: rupashka

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

@@ -240,9 +240,7 @@ public class TitledBorder extends AbstractBorder
             int edge = (border instanceof TitledBorder) ? 0 : EDGE_SPACING;
             JLabel label = getLabel(c);
             Dimension size = label.getPreferredSize();
-            Insets insets = (border != null)
-                    ? border.getBorderInsets(c)
-                    : new Insets(0, 0, 0, 0);
+            Insets insets = getBorderInsets(border, c, new Insets(0, 0, 0, 0));
 
             int borderX = x + edge;
             int borderY = y + edge;
@@ -348,17 +346,8 @@ public class TitledBorder extends AbstractBorder
      */
     public Insets getBorderInsets(Component c, Insets insets) {
         Border border = getBorder();
-        if (border == null) {
-            insets.set(0, 0, 0, 0);
-        }
-        else if (border instanceof AbstractBorder) {
-            AbstractBorder ab = (AbstractBorder) border;
-            insets = ab.getBorderInsets(c, insets);
-        }
-        else {
-            Insets i = border.getBorderInsets(c);
-            insets.set(i.top, i.left, i.bottom, i.right);
-        }
+        insets = getBorderInsets(border, c, insets);
+
         String title = getTitle();
         if ((title != null) && !title.isEmpty()) {
             int edge = (border instanceof TitledBorder) ? 0 : EDGE_SPACING;
@@ -588,9 +577,7 @@ public class TitledBorder extends AbstractBorder
             int edge = (border instanceof TitledBorder) ? 0 : EDGE_SPACING;
             JLabel label = getLabel(c);
             Dimension size = label.getPreferredSize();
-            Insets insets = (border != null)
-                    ? border.getBorderInsets(c)
-                    : new Insets(0, 0, 0, 0);
+            Insets insets = getBorderInsets(border, c, new Insets(0, 0, 0, 0));
 
             int baseline = label.getBaseline(size.width, size.height);
             switch (getPosition()) {
@@ -728,4 +715,19 @@ public class TitledBorder extends AbstractBorder
         this.label.setEnabled(c.isEnabled());
         return this.label;
     }
+
+    private static Insets getBorderInsets(Border border, Component c, Insets insets) {
+        if (border == null) {
+            insets.set(0, 0, 0, 0);
+        }
+        else if (border instanceof AbstractBorder) {
+            AbstractBorder ab = (AbstractBorder) border;
+            insets = ab.getBorderInsets(c, insets);
+        }
+        else {
+            Insets i = border.getBorderInsets(c);
+            insets.set(i.top, i.left, i.bottom, i.right);
+        }
+        return insets;
+    }
 }

test/javax/swing/border/Test7034614.java

+/*
+ * Copyright (c) 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 7034614
+ * @summary Tests that TitledBorder does not modify Insets
+ * @author Sergey Malenkov
+ */
+
+import java.awt.Component;
+import java.awt.Graphics;
+import java.awt.Insets;
+import java.awt.image.BufferedImage;
+import javax.swing.border.Border;
+import javax.swing.border.TitledBorder;
+
+public class Test7034614 {
+
+    public static void main(String[] args) {
+        Graphics g = new BufferedImage(9, 9, 9).getGraphics();
+
+        BrokenBorder broken = new BrokenBorder();
+        TitledBorder titled = new TitledBorder(broken, broken.getClass().getName());
+
+        Insets insets = (Insets) broken.getBorderInsets(broken).clone();
+        titled.getBorderInsets(broken);
+        broken.validate(insets);
+        for (int i = 0; i < 10; i++) {
+            titled.paintBorder(broken, g, 0, 0, i, i);
+            broken.validate(insets);
+            titled.getBaseline(broken, i, i);
+            broken.validate(insets);
+        }
+    }
+
+    private static class BrokenBorder extends Component implements Border {
+        private Insets insets = new Insets(1, 2, 3, 4);
+
+        private void validate(Insets insets) {
+            if (!this.insets.equals(insets)) {
+                throw new Error("unexpected change");
+            }
+        }
+
+        public Insets getBorderInsets(Component c) {
+            return this.insets;
+        }
+
+        public boolean isBorderOpaque() {
+            return false;
+        }
+
+        public void paintBorder(Component c, Graphics g, int x, int y, int w, int h) {
+        }
+    }
+}