WorldWindOptionsPanelController.java

/*
 * Copyright (C) 2015 by Array Systems Computing Inc. http://www.array.ca
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation; either version 3 of the License, or (at your option)
 * any later version.
 * This program 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 for
 * more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, see http://www.gnu.org/licenses/
 */
package org.esa.snap.worldwind.preferences;

import org.netbeans.spi.options.OptionsPanelController;
import org.openide.util.HelpCtx;
import org.openide.util.Lookup;

import javax.swing.*;
import java.beans.PropertyChangeListener;
import java.beans.PropertyChangeSupport;

@OptionsPanelController.SubRegistration(location = "GeneralPreferences",
        displayName = "#LBL_WorldWindOption_DisplayName",
        keywords = "#LBL_WorldWindOption_Keywords",
        keywordsCategory = "WorldWind",
        id = "WorldWindOptionsPanelController",
        position = 8
)
@org.openide.util.NbBundle.Messages({
        "LBL_WorldWindOption_DisplayName=World View",
        "LBL_WorldWindOption_Keywords=WorldWind,Globe,World,Map"
})
public class WorldWindOptionsPanelController extends OptionsPanelController {

    private WorldWindOptionsPanel panel;
    private final PropertyChangeSupport pcs = new PropertyChangeSupport(this);
    private boolean changed;

    public void update() {
        getPanel().load();
        changed = false;
    }

    public void applyChanges() {
        SwingUtilities.invokeLater(() -> {
            getPanel().store();
            changed = false;
        });
    }

    public void cancel() {
        // need not do anything special, if no changes have been persisted yet
    }

    public boolean isValid() {
        return getPanel().valid();
    }

    public boolean isChanged() {
        return changed;
    }

    @Override
    public HelpCtx getHelpCtx() {
        return new HelpCtx("WorldWind");
    }

    public JComponent getComponent(Lookup masterLookup) {
        return getPanel();
    }

    public void addPropertyChangeListener(PropertyChangeListener l) {
        pcs.addPropertyChangeListener(l);
    }

    public void removePropertyChangeListener(PropertyChangeListener l) {
        pcs.removePropertyChangeListener(l);
    }

    private WorldWindOptionsPanel getPanel() {
        if (panel == null) {
            panel = new WorldWindOptionsPanel(this);
        }
        return panel;
    }

    void changed() {
        if (!changed) {
            changed = true;
            pcs.firePropertyChange(OptionsPanelController.PROP_CHANGED, false, true);
        }
        pcs.firePropertyChange(OptionsPanelController.PROP_VALID, null, null);
    }
}