--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/components/visual-panels/core/src/java/util/com/oracle/solaris/vp/util/swing/ExtListSelectionModel.java	Thu May 24 04:16:47 2012 -0400
@@ -0,0 +1,119 @@
+/*
+ * 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.util.swing;
+
+import javax.swing.DefaultListSelectionModel;
+import com.oracle.solaris.vp.util.swing.event.*;
+
+/**
+ * The {@code ExtListSelectionModel} class provides an event mechanism that
+ * reports a higher level of detail about changes in the model than its
+ * superclass.
+ */
+@SuppressWarnings({"serial"})
+public class ExtListSelectionModel extends DefaultListSelectionModel {
+    //
+    // Instance data
+    //
+
+    private ExtListSelectionListeners listeners =
+	new ExtListSelectionListeners();
+
+    //
+    // ListSelectionModel methods
+    //
+
+    @Override
+    public void addSelectionInterval(int index0, int index1) {
+	super.addSelectionInterval(index0, index1);
+
+	ExtListSelectionEvent event = new ExtListSelectionEvent(
+	    this, ExtListSelectionEvent.Type.ADD, index0, index1,
+	    getValueIsAdjusting());
+
+	fireExtListSelectionEvent(event);
+    }
+
+    @Override
+    public void clearSelection() {
+	super.clearSelection();
+
+	ExtListSelectionEvent event = new ExtListSelectionEvent(
+	    this, ExtListSelectionEvent.Type.CLEAR, -1, -1,
+	    getValueIsAdjusting());
+
+	fireExtListSelectionEvent(event);
+    }
+
+    @Override
+    public void insertIndexInterval(int index, int length, boolean before) {
+	try {
+	    super.insertIndexInterval(index, length, before);
+	} catch (IndexOutOfBoundsException e) {
+	    clearSelection();
+	}
+    }
+
+    @Override
+    public void removeSelectionInterval(int index0, int index1) {
+	super.removeSelectionInterval(index0, index1);
+
+	ExtListSelectionEvent event = new ExtListSelectionEvent(
+	    this, ExtListSelectionEvent.Type.REMOVE, index0, index1,
+	    getValueIsAdjusting());
+
+	fireExtListSelectionEvent(event);
+    }
+
+    @Override
+    public void setSelectionInterval(int index0, int index1) {
+	super.setSelectionInterval(index0, index1);
+
+	ExtListSelectionEvent event = new ExtListSelectionEvent(
+	    this, ExtListSelectionEvent.Type.SET, index0, index1,
+	    getValueIsAdjusting());
+
+	fireExtListSelectionEvent(event);
+    }
+
+    //
+    // ExtListSelectionModel methods
+    //
+
+    public void addExtListSelectionListener(
+	ExtListSelectionListener listener) {
+	listeners.add(listener);
+    }
+
+    public void removeExtListSelectionListener(
+	ExtListSelectionListener listener) {
+	listeners.remove(listener);
+    }
+
+    public void fireExtListSelectionEvent(ExtListSelectionEvent e) {
+	listeners.selectionChanged(e);
+    }
+}