ApplicationTypesOptionsPanelController.java

/*
 * Copyright (c) 2007, 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.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * 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
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package com.sun.tools.visualvm.modules.customtype.options;

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 Jaroslav Bachorik
 */
public class ApplicationTypesOptionsPanelController extends OptionsPanelController{
    volatile private ApplicationTypeOptionsPanel panel;
    final private PropertyChangeSupport pcs = new PropertyChangeSupport(this);
    
    @Override
    public void addPropertyChangeListener(PropertyChangeListener listener) {
        pcs.addPropertyChangeListener(listener);
    }

    @Override
    public void applyChanges() {
        getPanel().store();
    }

    @Override
    public void cancel() {
        // no-op
    }

    @Override
    public JComponent getComponent(Lookup arg0) {
        return getPanel();
    }

    @Override
    public HelpCtx getHelpCtx() {
        return null;
    }

    @Override
    public boolean isChanged() {
        return true;
    }

    @Override
    public boolean isValid() {
        return true;
    }

    @Override
    public void removePropertyChangeListener(PropertyChangeListener listener) {
        pcs.removePropertyChangeListener(listener);
    }

    @Override
    public void update() {
        getPanel().load();
    }

    synchronized private ApplicationTypeOptionsPanel getPanel() {
        if (panel == null) {
            panel = new ApplicationTypeOptionsPanel();
        }
        return panel;
    }

}