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/*
 * Copyright (C) 2012 United States Government as represented by the Administrator of the
 * National Aeronautics and Space Administration.
 * All Rights Reserved.
 */

package gov.nasa.worldwind.ogc.kml;

import gov.nasa.worldwind.geom.Position;
import gov.nasa.worldwind.util.Logging;
import gov.nasa.worldwind.util.xml.XMLEventParserContext;

import javax.xml.stream.XMLStreamException;
import javax.xml.stream.events.XMLEvent;

/**
 * Represents the KML Point element and provides access to its contents.
 *
 * @author tag
 * @version $Id: KMLPoint.java 1171 2013-02-11 21:45:02Z dcollins $
 */
public class KMLPoint extends KMLAbstractGeometry
{
    protected Position coordinates;

    /**
     * Construct an instance.
     *
     * @param namespaceURI the qualifying namespace URI. May be null to indicate no namespace qualification.
     */
    public KMLPoint(String namespaceURI)
    {
        super(namespaceURI);
    }

    @Override
    protected void doAddEventContent(Object o, XMLEventParserContext ctx, XMLEvent event, Object... args)
        throws XMLStreamException
    {
        if (event.asStartElement().getName().getLocalPart().equals("coordinates"))
            this.setCoordinates((Position.PositionList) o);
        else
            super.doAddEventContent(o, ctx, event, args);
    }

    public boolean isExtrude()
    {
        return this.getExtrude() == Boolean.TRUE;
    }

    public Boolean getExtrude()
    {
        return (Boolean) this.getField("extrude");
    }

    public String getAltitudeMode()
    {
        return (String) this.getField("altitudeMode");
    }

    public Position getCoordinates()
    {
        return this.coordinates;
    }

    protected void setCoordinates(Position.PositionList coordsList)
    {
        if (coordsList != null && coordsList.list.size() > 0)
            this.coordinates = coordsList.list.get(0);
    }

    @Override
    public void applyChange(KMLAbstractObject sourceValues)
    {
        if (!(sourceValues instanceof KMLPoint))
        {
            String message = Logging.getMessage("nullValue.SourceIsNull");
            Logging.logger().warning(message);
            throw new IllegalArgumentException(message);
        }

        KMLPoint point = (KMLPoint) sourceValues;

        if (point.getCoordinates() != null)
            this.coordinates = point.getCoordinates();

        super.applyChange(sourceValues); // sends geometry-changed notification
    }
}