/*
 *    GeoTools - The Open Source Java GIS Toolkit
 *    http://geotools.org
 *
 *    (C) 2008, Open Source Geospatial Foundation (OSGeo)
 *
 *    This library is free software; you can redistribute it and/or
 *    modify it under the terms of the GNU Lesser General Public
 *    License as published by the Free Software Foundation;
 *    version 2.1 of the License.
 *
 *    This library 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
 *    Lesser General Public License for more details.
 */
package org.geotools.wps.bindings;

import javax.xml.namespace.QName;

import net.opengis.wps10.DefaultType2;
import net.opengis.wps10.LanguagesType;
import net.opengis.wps10.LanguagesType1;
import net.opengis.wps10.Wps10Factory;

import org.geotools.ows.v1_1.OWS;
import org.geotools.wps.WPS;
import org.geotools.xml.AbstractComplexBinding;
import org.geotools.xml.ElementInstance;
import org.geotools.xml.Node;
import org.w3c.dom.Document;
import org.w3c.dom.Element;

/**
 * Manual binding for 'wps:Languages' in wpsGetCapabilibies_response.xsd'. 
 *<p>
 *This binding is implemented because it is an anonymous complex type which contains another
 *anonymous complex type. On top of all that its name conflicts with another type in the schema.
 *</p>
 * <pre>
 * <element name="Languages">
 *   <annotation>
 *       <documentation>Listing of the default and other languages supported by this service. </documentation>
 *   </annotation>
 *   <complexType>
 *       <sequence>
 *         <element name="Default">
 *           <annotation>
 *              <documentation>Identifies the default language that will be used unless the operation request specifies another supported language. </documentation>
 *           </annotation>
 *           <complexType>
 *              <sequence>
 *                  <element ref="ows:Language">
 *                  </element>
 *               </sequence>
 *           </complexType>
 *         </element>
 *         <element name="Supported" type="wps:LanguagesType">
 *           <annotation>
 *                    <documentation>Unordered list of references to all of the languages supported by this service. The default language shall be included in this list.</documentation>
 *           </annotation>
 *         </element>
 *       </sequence>
 *     </complexType>
 *   </element>
 *
 * </pre>
 * @author Justin Deoliveira, The Open Planning Project
 *
 *
 *
 * @source $URL$
 */
public class LanguagesBinding extends AbstractComplexBinding {

    Wps10Factory factory;
    public LanguagesBinding( Wps10Factory factory ) {
        this.factory = factory;
    }
    
    public QName getTarget() {
        return WPS._Languages;
    }

    public Class getType() {
        return LanguagesType1.class;
    }
    
    public Object parse(ElementInstance instance, Node node, Object value) throws Exception {
        LanguagesType1 langs = factory.createLanguagesType1();
        
        DefaultType2 def = factory.createDefaultType2();
        langs.setDefault( def );
        def.setLanguage( (String) node.getChildValue( "Default") );
        
        LanguagesType supported = (LanguagesType) node.getChildValue( "Supported" );
        langs.setSupported( supported );
        
        return langs;
    }
    
    @Override
    public Element encode(Object object, Document document, Element value)
            throws Exception {
        
        LanguagesType1 langs = (LanguagesType1) object;
        
        //add the default manually
        Element def = document.createElementNS( WPS.NAMESPACE, "Default");
        value.appendChild( def );
        
        Element lang = document.createElementNS( OWS.NAMESPACE, OWS.Language.getLocalPart() );
        def.appendChild( lang );
        
        lang.appendChild( document.createTextNode( langs.getDefault().getLanguage() ) );
        
        return value;
    }
    
    @Override
    public Object getProperty(Object object, QName name) throws Exception {
        LanguagesType1 langs = (LanguagesType1) object;
        
        if ( "Supported".equals( name.getLocalPart() ) ) {
            return langs.getSupported();
        }
        
        return null;
    }

}