package org.geotools.gml4wcs.bindings;

import javax.xml.namespace.QName;

import org.geotools.geometry.GeneralDirectPosition;
import org.geotools.gml4wcs.GML;
import org.geotools.xml.AbstractComplexBinding;
import org.geotools.xml.ElementInstance;
import org.geotools.xml.Node;
import org.opengis.geometry.DirectPosition;
import org.w3c.dom.Document;
import org.w3c.dom.Element;

/**
 * Binding object for the type http://www.opengis.net/gml:DirectPositionType.
 * 
 * <p>
 * 
 * <pre>
 *	 <code>
 *  <complexType name="DirectPositionType">
 *      <annotation>
 *          <documentation>DirectPosition instances hold the coordinates for a position within some coordinate reference system (CRS). Since DirectPositions, as data types, will often be included in larger objects (such as geometry elements) that have references to CRS, the "srsName" attribute will in general be missing, if this particular DirectPosition is included in a larger element with such a reference to a CRS. In this case, the CRS is implicitly assumed to take on the value of the containing object's CRS.</documentation>
 *      </annotation>
 *      <simpleContent>
 *          <extension base="gml:doubleList">
 *              <attribute name="dimension" type="positiveInteger" use="optional">
 *                  <annotation>
 *                      <documentation>The attribute "dimension" is the length of coordinate sequence (the number of entries in the list). This is determined by the coordinate reference system.</documentation>
 *                  </annotation>
 *              </attribute>
 *          </extension>
 *      </simpleContent>
 *  </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/DirectPositionTypeBinding.java $
 */
public class DirectPositionTypeBinding extends AbstractComplexBinding {

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

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

    /**
     * <!-- begin-user-doc --> <!-- end-user-doc -->
     * 
     * @generated modifiable
     */
    public Object parse(ElementInstance instance, Node node, Object value)
            throws Exception {
        DirectPosition dp = null;

        if ("pos".equals(instance.getName())) {
            String[] CP = instance.getText().split(" ");
            double[] coordinates = new double[CP.length];
            int c = 0;
            for (String coord : CP) {
                coordinates[c++] = Double.parseDouble(coord.trim());
            }

            dp = new GeneralDirectPosition(coordinates);
        }

        return dp;
    }

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

        if (dp == null) {
            value.appendChild(document.createElementNS(GML.NAMESPACE, org.geotools.gml3.GML.Null.getLocalPart()));
        }
        
        double[] coordinates = dp.getCoordinate();
        StringBuilder sb = new StringBuilder();

        for (int i = 0; i < coordinates.length; i++) {
            sb.append(String.valueOf(coordinates[i]));

            if (i != (coordinates.length - 1)) {
                sb.append(" ");
            }
        }

        value.appendChild(document.createTextNode(sb.toString()));
        return null;
    }
    
    public Object getProperty(Object object, QName name) {
        DirectPosition dp = (DirectPosition) object;
        
        if (name.getLocalPart().equals("dimension")) {
            return dp.getDimension();
        }
        
        return null;
    }
}