--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/visualizer/Settings/src/com/sun/hotspot/igv/settings/ViewOptionsPanelController.java	Tue Feb 07 22:41:09 2012 +0100
@@ -0,0 +1,104 @@
+/*
+ * Copyright (c) 2008, 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.
+ *
+ */
+package com.sun.hotspot.igv.settings;
+
+import java.beans.PropertyChangeListener;
+import java.beans.PropertyChangeSupport;
+import javax.swing.JComponent;
+import org.netbeans.spi.options.OptionsPanelController;
+import org.openide.util.HelpCtx;
+import org.openide.util.Lookup;
+
+/**
+ *
+ * @author Thomas Wuerthinger
+ */
+final class ViewOptionsPanelController extends OptionsPanelController {
+
+    private ViewPanel panel;
+    private final PropertyChangeSupport pcs = new PropertyChangeSupport(this);
+    private boolean changed;
+
+    @Override
+    public void update() {
+        getPanel().load();
+        changed = false;
+    }
+
+    @Override
+    public void applyChanges() {
+        getPanel().store();
+        changed = false;
+    }
+
+    @Override
+    public void cancel() {
+    // need not do anything special, if no changes have been persisted yet
+    }
+
+    @Override
+    public boolean isValid() {
+        return getPanel().valid();
+    }
+
+    @Override
+    public boolean isChanged() {
+        return changed;
+    }
+
+    @Override
+    public HelpCtx getHelpCtx() {
+        return null; // new HelpCtx("...ID") if you have a help set
+    }
+
+    @Override
+    public JComponent getComponent(Lookup masterLookup) {
+        return getPanel();
+    }
+
+    @Override
+    public void addPropertyChangeListener(PropertyChangeListener l) {
+        pcs.addPropertyChangeListener(l);
+    }
+
+    @Override
+    public void removePropertyChangeListener(PropertyChangeListener l) {
+        pcs.removePropertyChangeListener(l);
+    }
+
+    private ViewPanel getPanel() {
+        if (panel == null) {
+            panel = new ViewPanel(this);
+        }
+        return panel;
+    }
+
+    void changed() {
+        if (!changed) {
+            changed = true;
+            pcs.firePropertyChange(OptionsPanelController.PROP_CHANGED, false, true);
+        }
+        pcs.firePropertyChange(OptionsPanelController.PROP_VALID, null, null);
+    }
+}