Source Code Cross Referenced for SLDChannelSelectionBinding.java in  » GIS » GeoTools-2.4.1 » org » geotools » sld » bindings » Java Source Code / Java DocumentationJava Source Code and Java Documentation

001:        /*
002:         *    GeoTools - OpenSource mapping toolkit
003:         *    http://geotools.org
004:         *    (C) 2002-2006, GeoTools Project Managment Committee (PMC)
005:         *
006:         *    This library is free software; you can redistribute it and/or
007:         *    modify it under the terms of the GNU Lesser General Public
008:         *    License as published by the Free Software Foundation;
009:         *    version 2.1 of the License.
010:         *
011:         *    This library is distributed in the hope that it will be useful,
012:         *    but WITHOUT ANY WARRANTY; without even the implied warranty of
013:         *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
014:         *    Lesser General Public License for more details.
015:         */
016:        package org.geotools.sld.bindings;
017:
018:        import org.picocontainer.MutablePicoContainer;
019:        import org.w3c.dom.Document;
020:        import org.w3c.dom.Element;
021:        import javax.xml.namespace.QName;
022:        import org.geotools.styling.ChannelSelection;
023:        import org.geotools.styling.SelectedChannelType;
024:        import org.geotools.styling.StyleFactory;
025:        import org.geotools.xml.*;
026:
027:        /**
028:         * Binding object for the element http://www.opengis.net/sld:ChannelSelection.
029:         *
030:         * <p>
031:         *
032:         * <pre>
033:         *         <code>
034:         *   &lt;xsd:element name=&quot;ChannelSelection&quot;&gt;
035:         *       &lt;xsd:annotation&gt;
036:         *           &lt;xsd:documentation&gt;         &quot;ChannelSelection&quot;
037:         *               specifies the false-color channel selection         for a
038:         *               multi-spectral raster source.       &lt;/xsd:documentation&gt;
039:         *       &lt;/xsd:annotation&gt;
040:         *       &lt;xsd:complexType&gt;
041:         *           &lt;xsd:choice&gt;
042:         *               &lt;xsd:sequence&gt;
043:         *                   &lt;xsd:element ref=&quot;sld:RedChannel&quot;/&gt;
044:         *                   &lt;xsd:element ref=&quot;sld:GreenChannel&quot;/&gt;
045:         *                   &lt;xsd:element ref=&quot;sld:BlueChannel&quot;/&gt;
046:         *               &lt;/xsd:sequence&gt;
047:         *               &lt;xsd:element ref=&quot;sld:GrayChannel&quot;/&gt;
048:         *           &lt;/xsd:choice&gt;
049:         *       &lt;/xsd:complexType&gt;
050:         *   &lt;/xsd:element&gt;
051:         *
052:         *
053:         * </code>
054:         *         </pre>
055:         *
056:         * </p>
057:         *
058:         * @generated
059:         */
060:        public class SLDChannelSelectionBinding extends AbstractComplexBinding {
061:            StyleFactory styleFactory;
062:
063:            public SLDChannelSelectionBinding(StyleFactory styleFactory) {
064:                this .styleFactory = styleFactory;
065:            }
066:
067:            /**
068:             * @generated
069:             */
070:            public QName getTarget() {
071:                return SLD.CHANNELSELECTION;
072:            }
073:
074:            /**
075:             * <!-- begin-user-doc --> <!-- end-user-doc -->
076:             *
077:             * @generated modifiable
078:             */
079:            public int getExecutionMode() {
080:                return AFTER;
081:            }
082:
083:            /**
084:             * <!-- begin-user-doc --> <!-- end-user-doc -->
085:             *
086:             * @generated modifiable
087:             */
088:            public Class getType() {
089:                return ChannelSelection.class;
090:            }
091:
092:            /**
093:             * <!-- begin-user-doc --> <!-- end-user-doc -->
094:             *
095:             * @generated modifiable
096:             */
097:            public void initialize(ElementInstance instance, Node node,
098:                    MutablePicoContainer context) {
099:            }
100:
101:            /**
102:             * <!-- begin-user-doc --> <!-- end-user-doc -->
103:             *
104:             * @generated modifiable
105:             */
106:            public Object parse(ElementInstance instance, Node node,
107:                    Object value) throws Exception {
108:                if ((node.getChild("RedChannel") == null)
109:                        || (node.getChild("BlueChannel") == null)
110:                        || (node.getChild("GreenChannel") == null)
111:                        || (node.getChild("GrayChannel") == null)) {
112:                    String msg = "All of Red,Blue,Green,Gray must be specified";
113:                    throw new RuntimeException(msg);
114:                }
115:
116:                SelectedChannelType[] rgb = new SelectedChannelType[] {
117:                        (SelectedChannelType) node.getChildValue("RedChannel"),
118:                        (SelectedChannelType) node
119:                                .getChildValue("GreenChannel"),
120:                        (SelectedChannelType) node.getChildValue("BlueChannel") };
121:                SelectedChannelType gray = (SelectedChannelType) node
122:                        .getChildValue("GrayChannel");
123:
124:                ChannelSelection cs = styleFactory.createChannelSelection(null);
125:                cs.setGrayChannel(gray);
126:                cs.setRGBChannels(rgb);
127:
128:                return cs;
129:            }
130:        }