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+/* Copyright (c) 2006-2013 by OpenLayers Contributors (see authors.txt for
+ * full list of contributors). Published under the 2-clause BSD license.
+ * See license.txt in the OpenLayers distribution or repository for the
+ * full text of the license. */
+
+/**
+ * @requires OpenLayers/Format/XML.js
+ * @requires OpenLayers/Feature/Vector.js
+ * @requires OpenLayers/Geometry/Point.js
+ * @requires OpenLayers/Geometry/MultiPoint.js
+ * @requires OpenLayers/Geometry/LineString.js
+ * @requires OpenLayers/Geometry/MultiLineString.js
+ * @requires OpenLayers/Geometry/Polygon.js
+ * @requires OpenLayers/Geometry/MultiPolygon.js
+ */
+
+/**
+ * Class: OpenLayers.Format.GML
+ * Read/Write GML. Create a new instance with the <OpenLayers.Format.GML>
+ * constructor. Supports the GML simple features profile.
+ *
+ * Inherits from:
+ * - <OpenLayers.Format.XML>
+ */
+OpenLayers.Format.GML = OpenLayers.Class(OpenLayers.Format.XML, {
+
+ /**
+ * APIProperty: featureNS
+ * {String} Namespace used for feature attributes. Default is
+ * "http://mapserver.gis.umn.edu/mapserver".
+ */
+ featureNS: "http://mapserver.gis.umn.edu/mapserver",
+
+ /**
+ * APIProperty: featurePrefix
+ * {String} Namespace alias (or prefix) for feature nodes. Default is
+ * "feature".
+ */
+ featurePrefix: "feature",
+
+ /**
+ * APIProperty: featureName
+ * {String} Element name for features. Default is "featureMember".
+ */
+ featureName: "featureMember",
+
+ /**
+ * APIProperty: layerName
+ * {String} Name of data layer. Default is "features".
+ */
+ layerName: "features",
+
+ /**
+ * APIProperty: geometryName
+ * {String} Name of geometry element. Defaults to "geometry".
+ */
+ geometryName: "geometry",
+
+ /**
+ * APIProperty: collectionName
+ * {String} Name of featureCollection element.
+ */
+ collectionName: "FeatureCollection",
+
+ /**
+ * APIProperty: gmlns
+ * {String} GML Namespace.
+ */
+ gmlns: "http://www.opengis.net/gml",
+
+ /**
+ * APIProperty: extractAttributes
+ * {Boolean} Extract attributes from GML.
+ */
+ extractAttributes: true,
+
+ /**
+ * APIProperty: xy
+ * {Boolean} Order of the GML coordinate true:(x,y) or false:(y,x)
+ * Changing is not recommended, a new Format should be instantiated.
+ */
+ xy: true,
+
+ /**
+ * Constructor: OpenLayers.Format.GML
+ * Create a new parser for GML.
+ *
+ * Parameters:
+ * options - {Object} An optional object whose properties will be set on
+ * this instance.
+ */
+ initialize: function(options) {
+ // compile regular expressions once instead of every time they are used
+ this.regExes = {
+ trimSpace: (/^\s*|\s*$/g),
+ removeSpace: (/\s*/g),
+ splitSpace: (/\s+/),
+ trimComma: (/\s*,\s*/g)
+ };
+ OpenLayers.Format.XML.prototype.initialize.apply(this, [options]);
+ },
+
+ /**
+ * APIMethod: read
+ * Read data from a string, and return a list of features.
+ *
+ * Parameters:
+ * data - {String} or {DOMElement} data to read/parse.
+ *
+ * Returns:
+ * {Array(<OpenLayers.Feature.Vector>)} An array of features.
+ */
+ read: function(data) {
+ if(typeof data == "string") {
+ data = OpenLayers.Format.XML.prototype.read.apply(this, [data]);
+ }
+ var featureNodes = this.getElementsByTagNameNS(data.documentElement,
+ this.gmlns,
+ this.featureName);
+ var features = [];
+ for(var i=0; i<featureNodes.length; i++) {
+ var feature = this.parseFeature(featureNodes[i]);
+ if(feature) {
+ features.push(feature);
+ }
+ }
+ return features;
+ },
+
+ /**
+ * Method: parseFeature
+ * This function is the core of the GML parsing code in OpenLayers.
+ * It creates the geometries that are then attached to the returned
+ * feature, and calls parseAttributes() to get attribute data out.
+ *
+ * Parameters:
+ * node - {DOMElement} A GML feature node.
+ */
+ parseFeature: function(node) {
+ // only accept one geometry per feature - look for highest "order"
+ var order = ["MultiPolygon", "Polygon",
+ "MultiLineString", "LineString",
+ "MultiPoint", "Point", "Envelope"];
+ // FIXME: In case we parse a feature with no geometry, but boundedBy an Envelope,
+ // this code creates a geometry derived from the Envelope. This is not correct.
+ var type, nodeList, geometry, parser;
+ for(var i=0; i<order.length; ++i) {
+ type = order[i];
+ nodeList = this.getElementsByTagNameNS(node, this.gmlns, type);
+ if(nodeList.length > 0) {
+ // only deal with first geometry of this type
+ parser = this.parseGeometry[type.toLowerCase()];
+ if(parser) {
+ geometry = parser.apply(this, [nodeList[0]]);
+ if (this.internalProjection && this.externalProjection) {
+ geometry.transform(this.externalProjection,
+ this.internalProjection);
+ }
+ } else {
+ throw new TypeError("Unsupported geometry type: " + type);
+ }
+ // stop looking for different geometry types
+ break;
+ }
+ }
+
+ var bounds;
+ var boxNodes = this.getElementsByTagNameNS(node, this.gmlns, "Box");
+ for(i=0; i<boxNodes.length; ++i) {
+ var boxNode = boxNodes[i];
+ var box = this.parseGeometry["box"].apply(this, [boxNode]);
+ var parentNode = boxNode.parentNode;
+ var parentName = parentNode.localName ||
+ parentNode.nodeName.split(":").pop();
+ if(parentName === "boundedBy") {
+ bounds = box;
+ } else {
+ geometry = box.toGeometry();
+ }
+ }
+
+ // construct feature (optionally with attributes)
+ var attributes;
+ if(this.extractAttributes) {
+ attributes = this.parseAttributes(node);
+ }
+ var feature = new OpenLayers.Feature.Vector(geometry, attributes);
+ feature.bounds = bounds;
+
+ feature.gml = {
+ featureType: node.firstChild.nodeName.split(":")[1],
+ featureNS: node.firstChild.namespaceURI,
+ featureNSPrefix: node.firstChild.prefix
+ };
+
+ // assign fid - this can come from a "fid" or "id" attribute
+ var childNode = node.firstChild;
+ var fid;
+ while(childNode) {
+ if(childNode.nodeType == 1) {
+ fid = childNode.getAttribute("fid") ||
+ childNode.getAttribute("id");
+ if(fid) {
+ break;
+ }
+ }
+ childNode = childNode.nextSibling;
+ }
+ feature.fid = fid;
+ return feature;
+ },
+
+ /**
+ * Property: parseGeometry
+ * Properties of this object are the functions that parse geometries based
+ * on their type.
+ */
+ parseGeometry: {
+
+ /**
+ * Method: parseGeometry.point
+ * Given a GML node representing a point geometry, create an OpenLayers
+ * point geometry.
+ *
+ * Parameters:
+ * node - {DOMElement} A GML node.
+ *
+ * Returns:
+ * {<OpenLayers.Geometry.Point>} A point geometry.
+ */
+ point: function(node) {
+ /**
+ * Three coordinate variations to consider:
+ * 1) <gml:pos>x y z</gml:pos>
+ * 2) <gml:coordinates>x, y, z</gml:coordinates>
+ * 3) <gml:coord><gml:X>x</gml:X><gml:Y>y</gml:Y></gml:coord>
+ */
+ var nodeList, coordString;
+ var coords = [];
+
+ // look for <gml:pos>
+ var nodeList = this.getElementsByTagNameNS(node, this.gmlns, "pos");
+ if(nodeList.length > 0) {
+ coordString = nodeList[0].firstChild.nodeValue;
+ coordString = coordString.replace(this.regExes.trimSpace, "");
+ coords = coordString.split(this.regExes.splitSpace);
+ }
+
+ // look for <gml:coordinates>
+ if(coords.length == 0) {
+ nodeList = this.getElementsByTagNameNS(node, this.gmlns,
+ "coordinates");
+ if(nodeList.length > 0) {
+ coordString = nodeList[0].firstChild.nodeValue;
+ coordString = coordString.replace(this.regExes.removeSpace,
+ "");
+ coords = coordString.split(",");
+ }
+ }
+
+ // look for <gml:coord>
+ if(coords.length == 0) {
+ nodeList = this.getElementsByTagNameNS(node, this.gmlns,
+ "coord");
+ if(nodeList.length > 0) {
+ var xList = this.getElementsByTagNameNS(nodeList[0],
+ this.gmlns, "X");
+ var yList = this.getElementsByTagNameNS(nodeList[0],
+ this.gmlns, "Y");
+ if(xList.length > 0 && yList.length > 0) {
+ coords = [xList[0].firstChild.nodeValue,
+ yList[0].firstChild.nodeValue];
+ }
+ }
+ }
+
+ // preserve third dimension
+ if(coords.length == 2) {
+ coords[2] = null;
+ }
+
+ if (this.xy) {
+ return new OpenLayers.Geometry.Point(coords[0], coords[1],
+ coords[2]);
+ }
+ else{
+ return new OpenLayers.Geometry.Point(coords[1], coords[0],
+ coords[2]);
+ }
+ },
+
+ /**
+ * Method: parseGeometry.multipoint
+ * Given a GML node representing a multipoint geometry, create an
+ * OpenLayers multipoint geometry.
+ *
+ * Parameters:
+ * node - {DOMElement} A GML node.
+ *
+ * Returns:
+ * {<OpenLayers.Geometry.MultiPoint>} A multipoint geometry.
+ */
+ multipoint: function(node) {
+ var nodeList = this.getElementsByTagNameNS(node, this.gmlns,
+ "Point");
+ var components = [];
+ if(nodeList.length > 0) {
+ var point;
+ for(var i=0; i<nodeList.length; ++i) {
+ point = this.parseGeometry.point.apply(this, [nodeList[i]]);
+ if(point) {
+ components.push(point);
+ }
+ }
+ }
+ return new OpenLayers.Geometry.MultiPoint(components);
+ },
+
+ /**
+ * Method: parseGeometry.linestring
+ * Given a GML node representing a linestring geometry, create an
+ * OpenLayers linestring geometry.
+ *
+ * Parameters:
+ * node - {DOMElement} A GML node.
+ *
+ * Returns:
+ * {<OpenLayers.Geometry.LineString>} A linestring geometry.
+ */
+ linestring: function(node, ring) {
+ /**
+ * Two coordinate variations to consider:
+ * 1) <gml:posList dimension="d">x0 y0 z0 x1 y1 z1</gml:posList>
+ * 2) <gml:coordinates>x0, y0, z0 x1, y1, z1</gml:coordinates>
+ */
+ var nodeList, coordString;
+ var coords = [];
+ var points = [];
+
+ // look for <gml:posList>
+ nodeList = this.getElementsByTagNameNS(node, this.gmlns, "posList");
+ if(nodeList.length > 0) {
+ coordString = this.getChildValue(nodeList[0]);
+ coordString = coordString.replace(this.regExes.trimSpace, "");
+ coords = coordString.split(this.regExes.splitSpace);
+ var dim = parseInt(nodeList[0].getAttribute("dimension"));
+ var j, x, y, z;
+ for(var i=0; i<coords.length/dim; ++i) {
+ j = i * dim;
+ x = coords[j];
+ y = coords[j+1];
+ z = (dim == 2) ? null : coords[j+2];
+ if (this.xy) {
+ points.push(new OpenLayers.Geometry.Point(x, y, z));
+ } else {
+ points.push(new OpenLayers.Geometry.Point(y, x, z));
+ }
+ }
+ }
+
+ // look for <gml:coordinates>
+ if(coords.length == 0) {
+ nodeList = this.getElementsByTagNameNS(node, this.gmlns,
+ "coordinates");
+ if(nodeList.length > 0) {
+ coordString = this.getChildValue(nodeList[0]);
+ coordString = coordString.replace(this.regExes.trimSpace,
+ "");
+ coordString = coordString.replace(this.regExes.trimComma,
+ ",");
+ var pointList = coordString.split(this.regExes.splitSpace);
+ for(var i=0; i<pointList.length; ++i) {
+ coords = pointList[i].split(",");
+ if(coords.length == 2) {
+ coords[2] = null;
+ }
+ if (this.xy) {
+ points.push(new OpenLayers.Geometry.Point(coords[0],
+ coords[1],
+ coords[2]));
+ } else {
+ points.push(new OpenLayers.Geometry.Point(coords[1],
+ coords[0],
+ coords[2]));
+ }
+ }
+ }
+ }
+
+ var line = null;
+ if(points.length != 0) {
+ if(ring) {
+ line = new OpenLayers.Geometry.LinearRing(points);
+ } else {
+ line = new OpenLayers.Geometry.LineString(points);
+ }
+ }
+ return line;
+ },
+
+ /**
+ * Method: parseGeometry.multilinestring
+ * Given a GML node representing a multilinestring geometry, create an
+ * OpenLayers multilinestring geometry.
+ *
+ * Parameters:
+ * node - {DOMElement} A GML node.
+ *
+ * Returns:
+ * {<OpenLayers.Geometry.MultiLineString>} A multilinestring geometry.
+ */
+ multilinestring: function(node) {
+ var nodeList = this.getElementsByTagNameNS(node, this.gmlns,
+ "LineString");
+ var components = [];
+ if(nodeList.length > 0) {
+ var line;
+ for(var i=0; i<nodeList.length; ++i) {
+ line = this.parseGeometry.linestring.apply(this,
+ [nodeList[i]]);
+ if(line) {
+ components.push(line);
+ }
+ }
+ }
+ return new OpenLayers.Geometry.MultiLineString(components);
+ },
+
+ /**
+ * Method: parseGeometry.polygon
+ * Given a GML node representing a polygon geometry, create an
+ * OpenLayers polygon geometry.
+ *
+ * Parameters:
+ * node - {DOMElement} A GML node.
+ *
+ * Returns:
+ * {<OpenLayers.Geometry.Polygon>} A polygon geometry.
+ */
+ polygon: function(node) {
+ var nodeList = this.getElementsByTagNameNS(node, this.gmlns,
+ "LinearRing");
+ var components = [];
+ if(nodeList.length > 0) {
+ // this assumes exterior ring first, inner rings after
+ var ring;
+ for(var i=0; i<nodeList.length; ++i) {
+ ring = this.parseGeometry.linestring.apply(this,
+ [nodeList[i], true]);
+ if(ring) {
+ components.push(ring);
+ }
+ }
+ }
+ return new OpenLayers.Geometry.Polygon(components);
+ },
+
+ /**
+ * Method: parseGeometry.multipolygon
+ * Given a GML node representing a multipolygon geometry, create an
+ * OpenLayers multipolygon geometry.
+ *
+ * Parameters:
+ * node - {DOMElement} A GML node.
+ *
+ * Returns:
+ * {<OpenLayers.Geometry.MultiPolygon>} A multipolygon geometry.
+ */
+ multipolygon: function(node) {
+ var nodeList = this.getElementsByTagNameNS(node, this.gmlns,
+ "Polygon");
+ var components = [];
+ if(nodeList.length > 0) {
+ var polygon;
+ for(var i=0; i<nodeList.length; ++i) {
+ polygon = this.parseGeometry.polygon.apply(this,
+ [nodeList[i]]);
+ if(polygon) {
+ components.push(polygon);
+ }
+ }
+ }
+ return new OpenLayers.Geometry.MultiPolygon(components);
+ },
+
+ envelope: function(node) {
+ var components = [];
+ var coordString;
+ var envelope;
+
+ var lpoint = this.getElementsByTagNameNS(node, this.gmlns, "lowerCorner");
+ if (lpoint.length > 0) {
+ var coords = [];
+
+ if(lpoint.length > 0) {
+ coordString = lpoint[0].firstChild.nodeValue;
+ coordString = coordString.replace(this.regExes.trimSpace, "");
+ coords = coordString.split(this.regExes.splitSpace);
+ }
+
+ if(coords.length == 2) {
+ coords[2] = null;
+ }
+ if (this.xy) {
+ var lowerPoint = new OpenLayers.Geometry.Point(coords[0], coords[1],coords[2]);
+ } else {
+ var lowerPoint = new OpenLayers.Geometry.Point(coords[1], coords[0],coords[2]);
+ }
+ }
+
+ var upoint = this.getElementsByTagNameNS(node, this.gmlns, "upperCorner");
+ if (upoint.length > 0) {
+ var coords = [];
+
+ if(upoint.length > 0) {
+ coordString = upoint[0].firstChild.nodeValue;
+ coordString = coordString.replace(this.regExes.trimSpace, "");
+ coords = coordString.split(this.regExes.splitSpace);
+ }
+
+ if(coords.length == 2) {
+ coords[2] = null;
+ }
+ if (this.xy) {
+ var upperPoint = new OpenLayers.Geometry.Point(coords[0], coords[1],coords[2]);
+ } else {
+ var upperPoint = new OpenLayers.Geometry.Point(coords[1], coords[0],coords[2]);
+ }
+ }
+
+ if (lowerPoint && upperPoint) {
+ components.push(new OpenLayers.Geometry.Point(lowerPoint.x, lowerPoint.y));
+ components.push(new OpenLayers.Geometry.Point(upperPoint.x, lowerPoint.y));
+ components.push(new OpenLayers.Geometry.Point(upperPoint.x, upperPoint.y));
+ components.push(new OpenLayers.Geometry.Point(lowerPoint.x, upperPoint.y));
+ components.push(new OpenLayers.Geometry.Point(lowerPoint.x, lowerPoint.y));
+
+ var ring = new OpenLayers.Geometry.LinearRing(components);
+ envelope = new OpenLayers.Geometry.Polygon([ring]);
+ }
+ return envelope;
+ },
+
+ /**
+ * Method: parseGeometry.box
+ * Given a GML node representing a box geometry, create an
+ * OpenLayers.Bounds.
+ *
+ * Parameters:
+ * node - {DOMElement} A GML node.
+ *
+ * Returns:
+ * {<OpenLayers.Bounds>} A bounds representing the box.
+ */
+ box: function(node) {
+ var nodeList = this.getElementsByTagNameNS(node, this.gmlns,
+ "coordinates");
+ var coordString;
+ var coords, beginPoint = null, endPoint = null;
+ if (nodeList.length > 0) {
+ coordString = nodeList[0].firstChild.nodeValue;
+ coords = coordString.split(" ");
+ if (coords.length == 2) {
+ beginPoint = coords[0].split(",");
+ endPoint = coords[1].split(",");
+ }
+ }
+ if (beginPoint !== null && endPoint !== null) {
+ return new OpenLayers.Bounds(parseFloat(beginPoint[0]),
+ parseFloat(beginPoint[1]),
+ parseFloat(endPoint[0]),
+ parseFloat(endPoint[1]) );
+ }
+ }
+
+ },
+
+ /**
+ * Method: parseAttributes
+ *
+ * Parameters:
+ * node - {DOMElement}
+ *
+ * Returns:
+ * {Object} An attributes object.
+ */
+ parseAttributes: function(node) {
+ var attributes = {};
+ // assume attributes are children of the first type 1 child
+ var childNode = node.firstChild;
+ var children, i, child, grandchildren, grandchild, name, value;
+ while(childNode) {
+ if(childNode.nodeType == 1) {
+ // attributes are type 1 children with one type 3 child
+ children = childNode.childNodes;
+ for(i=0; i<children.length; ++i) {
+ child = children[i];
+ if(child.nodeType == 1) {
+ grandchildren = child.childNodes;
+ if(grandchildren.length == 1) {
+ grandchild = grandchildren[0];
+ if(grandchild.nodeType == 3 ||
+ grandchild.nodeType == 4) {
+ name = (child.prefix) ?
+ child.nodeName.split(":")[1] :
+ child.nodeName;
+ value = grandchild.nodeValue.replace(
+ this.regExes.trimSpace, "");
+ attributes[name] = value;
+ }
+ } else {
+ // If child has no childNodes (grandchildren),
+ // set an attribute with null value.
+ // e.g. <prefix:fieldname/> becomes
+ // {fieldname: null}
+ attributes[child.nodeName.split(":").pop()] = null;
+ }
+ }
+ }
+ break;
+ }
+ childNode = childNode.nextSibling;
+ }
+ return attributes;
+ },
+
+ /**
+ * APIMethod: write
+ * Generate a GML document string given a list of features.
+ *
+ * Parameters:
+ * features - {Array(<OpenLayers.Feature.Vector>)} List of features to
+ * serialize into a string.
+ *
+ * Returns:
+ * {String} A string representing the GML document.
+ */
+ write: function(features) {
+ if(!(OpenLayers.Util.isArray(features))) {
+ features = [features];
+ }
+ var gml = this.createElementNS("http://www.opengis.net/wfs",
+ "wfs:" + this.collectionName);
+ for(var i=0; i<features.length; i++) {
+ gml.appendChild(this.createFeatureXML(features[i]));
+ }
+ return OpenLayers.Format.XML.prototype.write.apply(this, [gml]);
+ },
+
+ /**
+ * Method: createFeatureXML
+ * Accept an OpenLayers.Feature.Vector, and build a GML node for it.
+ *
+ * Parameters:
+ * feature - {<OpenLayers.Feature.Vector>} The feature to be built as GML.
+ *
+ * Returns:
+ * {DOMElement} A node reprensting the feature in GML.
+ */
+ createFeatureXML: function(feature) {
+ var geometry = feature.geometry;
+ var geometryNode = this.buildGeometryNode(geometry);
+ var geomContainer = this.createElementNS(this.featureNS,
+ this.featurePrefix + ":" +
+ this.geometryName);
+ geomContainer.appendChild(geometryNode);
+ var featureNode = this.createElementNS(this.gmlns,
+ "gml:" + this.featureName);
+ var featureContainer = this.createElementNS(this.featureNS,
+ this.featurePrefix + ":" +
+ this.layerName);
+ var fid = feature.fid || feature.id;
+ featureContainer.setAttribute("fid", fid);
+ featureContainer.appendChild(geomContainer);
+ for(var attr in feature.attributes) {
+ var attrText = this.createTextNode(feature.attributes[attr]);
+ var nodename = attr.substring(attr.lastIndexOf(":") + 1);
+ var attrContainer = this.createElementNS(this.featureNS,
+ this.featurePrefix + ":" +
+ nodename);
+ attrContainer.appendChild(attrText);
+ featureContainer.appendChild(attrContainer);
+ }
+ featureNode.appendChild(featureContainer);
+ return featureNode;
+ },
+
+ /**
+ * APIMethod: buildGeometryNode
+ */
+ buildGeometryNode: function(geometry) {
+ if (this.externalProjection && this.internalProjection) {
+ geometry = geometry.clone();
+ geometry.transform(this.internalProjection,
+ this.externalProjection);
+ }
+ var className = geometry.CLASS_NAME;
+ var type = className.substring(className.lastIndexOf(".") + 1);
+ var builder = this.buildGeometry[type.toLowerCase()];
+ return builder.apply(this, [geometry]);
+ },
+
+ /**
+ * Property: buildGeometry
+ * Object containing methods to do the actual geometry node building
+ * based on geometry type.
+ */
+ buildGeometry: {
+ // TBD retrieve the srs from layer
+ // srsName is non-standard, so not including it until it's right.
+ // gml.setAttribute("srsName",
+ // "http://www.opengis.net/gml/srs/epsg.xml#4326");
+
+ /**
+ * Method: buildGeometry.point
+ * Given an OpenLayers point geometry, create a GML point.
+ *
+ * Parameters:
+ * geometry - {<OpenLayers.Geometry.Point>} A point geometry.
+ *
+ * Returns:
+ * {DOMElement} A GML point node.
+ */
+ point: function(geometry) {
+ var gml = this.createElementNS(this.gmlns, "gml:Point");
+ gml.appendChild(this.buildCoordinatesNode(geometry));
+ return gml;
+ },
+
+ /**
+ * Method: buildGeometry.multipoint
+ * Given an OpenLayers multipoint geometry, create a GML multipoint.
+ *
+ * Parameters:
+ * geometry - {<OpenLayers.Geometry.MultiPoint>} A multipoint geometry.
+ *
+ * Returns:
+ * {DOMElement} A GML multipoint node.
+ */
+ multipoint: function(geometry) {
+ var gml = this.createElementNS(this.gmlns, "gml:MultiPoint");
+ var points = geometry.components;
+ var pointMember, pointGeom;
+ for(var i=0; i<points.length; i++) {
+ pointMember = this.createElementNS(this.gmlns,
+ "gml:pointMember");
+ pointGeom = this.buildGeometry.point.apply(this,
+ [points[i]]);
+ pointMember.appendChild(pointGeom);
+ gml.appendChild(pointMember);
+ }
+ return gml;
+ },
+
+ /**
+ * Method: buildGeometry.linestring
+ * Given an OpenLayers linestring geometry, create a GML linestring.
+ *
+ * Parameters:
+ * geometry - {<OpenLayers.Geometry.LineString>} A linestring geometry.
+ *
+ * Returns:
+ * {DOMElement} A GML linestring node.
+ */
+ linestring: function(geometry) {
+ var gml = this.createElementNS(this.gmlns, "gml:LineString");
+ gml.appendChild(this.buildCoordinatesNode(geometry));
+ return gml;
+ },
+
+ /**
+ * Method: buildGeometry.multilinestring
+ * Given an OpenLayers multilinestring geometry, create a GML
+ * multilinestring.
+ *
+ * Parameters:
+ * geometry - {<OpenLayers.Geometry.MultiLineString>} A multilinestring
+ * geometry.
+ *
+ * Returns:
+ * {DOMElement} A GML multilinestring node.
+ */
+ multilinestring: function(geometry) {
+ var gml = this.createElementNS(this.gmlns, "gml:MultiLineString");
+ var lines = geometry.components;
+ var lineMember, lineGeom;
+ for(var i=0; i<lines.length; ++i) {
+ lineMember = this.createElementNS(this.gmlns,
+ "gml:lineStringMember");
+ lineGeom = this.buildGeometry.linestring.apply(this,
+ [lines[i]]);
+ lineMember.appendChild(lineGeom);
+ gml.appendChild(lineMember);
+ }
+ return gml;
+ },
+
+ /**
+ * Method: buildGeometry.linearring
+ * Given an OpenLayers linearring geometry, create a GML linearring.
+ *
+ * Parameters:
+ * geometry - {<OpenLayers.Geometry.LinearRing>} A linearring geometry.
+ *
+ * Returns:
+ * {DOMElement} A GML linearring node.
+ */
+ linearring: function(geometry) {
+ var gml = this.createElementNS(this.gmlns, "gml:LinearRing");
+ gml.appendChild(this.buildCoordinatesNode(geometry));
+ return gml;
+ },
+
+ /**
+ * Method: buildGeometry.polygon
+ * Given an OpenLayers polygon geometry, create a GML polygon.
+ *
+ * Parameters:
+ * geometry - {<OpenLayers.Geometry.Polygon>} A polygon geometry.
+ *
+ * Returns:
+ * {DOMElement} A GML polygon node.
+ */
+ polygon: function(geometry) {
+ var gml = this.createElementNS(this.gmlns, "gml:Polygon");
+ var rings = geometry.components;
+ var ringMember, ringGeom, type;
+ for(var i=0; i<rings.length; ++i) {
+ type = (i==0) ? "outerBoundaryIs" : "innerBoundaryIs";
+ ringMember = this.createElementNS(this.gmlns,
+ "gml:" + type);
+ ringGeom = this.buildGeometry.linearring.apply(this,
+ [rings[i]]);
+ ringMember.appendChild(ringGeom);
+ gml.appendChild(ringMember);
+ }
+ return gml;
+ },
+
+ /**
+ * Method: buildGeometry.multipolygon
+ * Given an OpenLayers multipolygon geometry, create a GML multipolygon.
+ *
+ * Parameters:
+ * geometry - {<OpenLayers.Geometry.MultiPolygon>} A multipolygon
+ * geometry.
+ *
+ * Returns:
+ * {DOMElement} A GML multipolygon node.
+ */
+ multipolygon: function(geometry) {
+ var gml = this.createElementNS(this.gmlns, "gml:MultiPolygon");
+ var polys = geometry.components;
+ var polyMember, polyGeom;
+ for(var i=0; i<polys.length; ++i) {
+ polyMember = this.createElementNS(this.gmlns,
+ "gml:polygonMember");
+ polyGeom = this.buildGeometry.polygon.apply(this,
+ [polys[i]]);
+ polyMember.appendChild(polyGeom);
+ gml.appendChild(polyMember);
+ }
+ return gml;
+
+ },
+
+ /**
+ * Method: buildGeometry.bounds
+ * Given an OpenLayers bounds, create a GML box.
+ *
+ * Parameters:
+ * bounds - {<OpenLayers.Geometry.Bounds>} A bounds object.
+ *
+ * Returns:
+ * {DOMElement} A GML box node.
+ */
+ bounds: function(bounds) {
+ var gml = this.createElementNS(this.gmlns, "gml:Box");
+ gml.appendChild(this.buildCoordinatesNode(bounds));
+ return gml;
+ }
+ },
+
+ /**
+ * Method: buildCoordinates
+ * builds the coordinates XmlNode
+ * (code)
+ * <gml:coordinates decimal="." cs="," ts=" ">...</gml:coordinates>
+ * (end)
+ *
+ * Parameters:
+ * geometry - {<OpenLayers.Geometry>}
+ *
+ * Returns:
+ * {XmlNode} created xmlNode
+ */
+ buildCoordinatesNode: function(geometry) {
+ var coordinatesNode = this.createElementNS(this.gmlns,
+ "gml:coordinates");
+ coordinatesNode.setAttribute("decimal", ".");
+ coordinatesNode.setAttribute("cs", ",");
+ coordinatesNode.setAttribute("ts", " ");
+
+ var parts = [];
+
+ if(geometry instanceof OpenLayers.Bounds){
+ parts.push(geometry.left + "," + geometry.bottom);
+ parts.push(geometry.right + "," + geometry.top);
+ } else {
+ var points = (geometry.components) ? geometry.components : [geometry];
+ for(var i=0; i<points.length; i++) {
+ parts.push(points[i].x + "," + points[i].y);
+ }
+ }
+
+ var txtNode = this.createTextNode(parts.join(" "));
+ coordinatesNode.appendChild(txtNode);
+
+ return coordinatesNode;
+ },
+
+ CLASS_NAME: "OpenLayers.Format.GML"
+});
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-22 18:13:53 +0000