diff -r c6aad84d2493 -r 0944d8c0158b components/visual-panels/apache/src/java/vpanels/app/apache/com/oracle/solaris/vp/panels/apache/client/swing/PropertyGroupNamePool.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/components/visual-panels/apache/src/java/vpanels/app/apache/com/oracle/solaris/vp/panels/apache/client/swing/PropertyGroupNamePool.java	Thu May 24 04:16:47 2012 -0400
@@ -0,0 +1,149 @@
+/*
+ * 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) 2009, 2012, Oracle and/or its affiliates. All rights reserved.
+ */
+
+package com.oracle.solaris.vp.panels.apache.client.swing;
+
+import java.util.*;
+import com.oracle.solaris.scf.common.ScfException;
+import com.oracle.solaris.vp.panel.common.api.smf_old.*;
+import com.oracle.solaris.vp.panel.common.smf.ServiceMXBean;
+
+public class PropertyGroupNamePool {
+    //
+    // Static data
+    //
+
+    private static final int MINIMUM = 1;
+
+    //
+    // Instance data
+    //
+
+    private ServiceMXBean service;
+    private String prefix;
+    private List<Integer> existing = new LinkedList<Integer>();
+    private List<Integer> reserved = new LinkedList<Integer>();
+    private int next;
+
+    //
+    // Constructors
+    //
+
+    public PropertyGroupNamePool(ServiceMXBean service, String prefix)
+	throws ScfException {
+
+	this.service = service;
+	this.prefix = prefix;
+
+	refresh();
+    }
+
+    //
+    // PropertyGroupNamePool methods
+    //
+
+    public String get() {
+	String name = prefix + next;
+
+	int index = Collections.binarySearch(reserved, next);
+	assert index < 0;
+	index = -1 - index;
+	reserved.add(index, next);
+
+	next = getNext(next);
+
+	return name;
+    }
+
+    @SuppressWarnings({"unchecked"})
+    public boolean put(int ord) {
+	boolean found = false;
+	List[] lists = {
+	    reserved, existing
+	};
+
+	for (List<Integer> list : lists) {
+	    int index = Collections.binarySearch(list, ord);
+	    found = index >= 0;
+	    if (found) {
+		list.remove(index);
+		if (ord < next) {
+		    next = ord;
+		}
+		break;
+	    }
+	}
+
+	return found;
+    }
+
+    public boolean put(String name) {
+	try {
+	    return put(toOrd(name));
+	} catch (NumberFormatException e) {
+	    return false;
+	}
+    }
+
+    public void refresh() throws ScfException {
+	existing.clear();
+	for (PropertyGroup pg : service.getPropertyGroups()) {
+	    String name = pg.getName();
+	    try {
+		int ord = toOrd(name);
+		int index = Collections.binarySearch(existing, ord);
+		if (index < 0) {
+		    index = -1 - index;
+		    existing.add(index, ord);
+		}
+		index = Collections.binarySearch(reserved, ord);
+		if (index >= 0) {
+		    reserved.remove(index);
+		}
+	    } catch (NumberFormatException skip) {
+	    }
+	}
+	next = getNext(MINIMUM);
+    }
+
+    //
+    // Private methods
+    //
+
+    private int getNext(int from) {
+	while (Collections.binarySearch(existing, from) >= 0 ||
+	    Collections.binarySearch(reserved, from) >= 0) {
+	    from++;
+	}
+	return from;
+    }
+
+    private int toOrd(String name) {
+	if (name.startsWith(prefix)) {
+	    return Integer.parseInt(name.substring(prefix.length()));
+	}
+	throw new NumberFormatException();
+    }
+}