package org.geotools.gml4wcs.bindings;

import javax.xml.namespace.QName;

import org.geotools.coverage.grid.GeneralGridEnvelope;
import org.geotools.geometry.GeneralEnvelope;
import org.geotools.gml4wcs.GML;
import org.geotools.xml.AbstractComplexBinding;
import org.geotools.xml.ElementInstance;
import org.geotools.xml.Node;
import org.opengis.coverage.grid.GridEnvelope;
import org.w3c.dom.Document;
import org.w3c.dom.Element;

/**
 * Binding object for the type http://www.opengis.net/gml:GridEnvelopeType.
 * 
 * <p>
 * 
 * <pre>
 *	 <code>
 *  <complexType name="GridEnvelopeType">
 *      <annotation>
 *          <documentation>Provides grid coordinate values for the diametrically opposed corners of an envelope that bounds a section of grid. The value of a single coordinate is the number of offsets from the origin of the grid in the direction of a specific axis.</documentation>
 *      </annotation>
 *      <sequence>
 *          <element name="low" type="gml:integerList"/>
 *          <element name="high" type="gml:integerList"/>
 *      </sequence>
 *  </complexType> 
 * 	
 * </code>
 *	 </pre>
 * 
 * </p>
 * 
 * @generated
 *
 * @source $URL: http://svn.osgeo.org/geotools/trunk/modules/extension/xsd/xsd-wcs/src/main/java/org/geotools/gml4wcs/bindings/GridEnvelopeTypeBinding.java $
 */
public class GridEnvelopeTypeBinding extends AbstractComplexBinding {

    /**
     * @generated
     */
    public QName getTarget() {
        return GML.GridEnvelopeType;
    }

    /**
     * <!-- begin-user-doc --> <!-- end-user-doc -->
     * 
     * @generated modifiable
     */
    public Class getType() {
        return GridEnvelope.class;
    }

    /**
     * <!-- begin-user-doc --> <!-- end-user-doc -->
     * 
     * @generated modifiable
     */
    public Object parse(ElementInstance instance, Node node, Object value)
            throws Exception {
        if (node.getChild("low") != null) {
            int[] l = (int[]) node.getChildValue("low");
            int[] h = (int[]) node.getChildValue("high");

            GridEnvelope envelope = new GeneralGridEnvelope(l, h, true);
            return envelope;
        }

        return null;
    }

    public Element encode(Object object, Document document, Element value)
            throws Exception {
        GeneralEnvelope envelope = (GeneralEnvelope) object;

        if (envelope.isNull()) {
            value.appendChild(document.createElementNS(GML.NAMESPACE, org.geotools.gml3.GML.Null.getLocalPart()));
        }

        return null;
    }

    public Object getProperty(Object object, QName name) {
        GridEnvelope envelope = (GridEnvelope) object;

        if (envelope == null) {
            return null;
        }

        if (name.getLocalPart().equals("low")) {
            return envelope.getLow().getCoordinateValues();
        }

        if (name.getLocalPart().equals("high")) {
            return envelope.getHigh().getCoordinateValues();
        }

        return null;
    }
}