--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/components/visual-panels/core/src/java/util/com/oracle/solaris/vp/util/swing/ExtRootPane.java	Thu May 24 04:16:47 2012 -0400
@@ -0,0 +1,140 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License (the "License").
+ * You may not use this file except in compliance with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+
+/*
+ * Copyright (c) 2010, 2012, Oracle and/or its affiliates. All rights reserved.
+ */
+
+package com.oracle.solaris.vp.util.swing;
+
+import java.awt.*;
+import javax.swing.*;
+
+/**
+ * The {@code ExtRootPane} class, when {@link #validate validated}, can
+ * optionally:
+ * <ol>
+ *   <li>
+ *     {@link #setAutoResizeEnabled automatically} resize its enclosing {@code
+ *     Window} to it's preferred size
+ *   </li>
+ *   <li>
+ *     {@link #setAutoMinSizeEnabled automatically} set its enclosing {@code
+ *     Window}'s minimum size to it's preferred size
+ *   </li>
+ * </ol>
+ *
+ * Additionally, the {@code ExtRootPane} takes any visible glass pane into
+ * account when calculating its preferred size.
+ *
+ * @see         ExtDialog
+ * @see         ExtFrame
+ */
+@SuppressWarnings({"serial"})
+public class ExtRootPane extends JRootPane {
+    //
+    // Instance data
+    //
+
+    private boolean doingValidate;
+    private boolean autoResizeEnabled = true;
+    private boolean autoMinSizeEnabled = true;
+
+    //
+    // Component methods
+    //
+
+    @Override
+    public void validate() {
+	if (!doingValidate && (autoResizeEnabled || autoMinSizeEnabled)) {
+	    doingValidate = true;
+	    try {
+		Window window = SwingUtilities.getWindowAncestor(this);
+		if (window != null) {
+		    if (autoResizeEnabled) {
+			window.pack();
+		    }
+		    if (autoMinSizeEnabled) {
+			window.setMinimumSize(window.getPreferredSize());
+		    }
+		}
+	    } finally {
+		doingValidate = false;
+	    }
+	}
+	super.validate();
+    }
+
+    @Override
+    public Dimension getPreferredSize() {
+        Dimension size = super.getPreferredSize();
+	if (isPreferredSizeSet()) {
+	    return size;
+	}
+
+        Component glass = getGlassPane();
+
+        // Resize for glass pane
+        if (glass.isVisible()) {
+            Dimension gSize = glass.getPreferredSize();
+	    if (gSize.width > size.width) {
+		size.width = gSize.width;
+	    }
+	    if (gSize.height > size.height) {
+		size.height = gSize.height;
+	    }
+	}
+
+        return size;
+    }
+
+    //
+    // ExtRootPane methods
+    //
+
+    /**
+     * Gets whether auto-minimum size is enabled.
+     */
+    public boolean isAutoMinSizeEnabled() {
+	return autoMinSizeEnabled;
+    }
+
+    /**
+     * Gets whether auto-resize is enabled.
+     */
+    public boolean isAutoResizeEnabled() {
+	return autoResizeEnabled;
+    }
+
+    /**
+     * Sets whether auto-minimum size is enabled.
+     */
+    public void setAutoMinSizeEnabled(boolean autoMinSizeEnabled) {
+	this.autoMinSizeEnabled = autoMinSizeEnabled;
+    }
+
+    /**
+     * Sets whether auto-resize is enabled.
+     */
+    public void setAutoResizeEnabled(boolean autoResizeEnabled) {
+	this.autoResizeEnabled = autoResizeEnabled;
+    }
+}