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/* Copyright (c) 2006-2013 by OpenLayers Contributors (see authors.txt for
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* full list of contributors). Published under the 2-clause BSD license.
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* See license.txt in the OpenLayers distribution or repository for the
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* full text of the license. */
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/**
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* @requires OpenLayers/Format/GML/Base.js
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*/
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/**
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* Class: OpenLayers.Format.GML.v2
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* Parses GML version 2.
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*
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* Inherits from:
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* - <OpenLayers.Format.GML.Base>
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*/
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OpenLayers.Format.GML.v2 = OpenLayers.Class(OpenLayers.Format.GML.Base, {
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/**
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* Property: schemaLocation
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* {String} Schema location for a particular minor version.
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*/
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schemaLocation: "http://www.opengis.net/gml http://schemas.opengis.net/gml/2.1.2/feature.xsd",
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/**
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* Constructor: OpenLayers.Format.GML.v2
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* Create a parser for GML v2.
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*
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* Parameters:
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* options - {Object} An optional object whose properties will be set on
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* this instance.
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*
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* Valid options properties:
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* featureType - {String} Local (without prefix) feature typeName (required).
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* featureNS - {String} Feature namespace (required).
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* geometryName - {String} Geometry element name.
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*/
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initialize: function(options) {
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OpenLayers.Format.GML.Base.prototype.initialize.apply(this, [options]);
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},
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/**
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* Property: readers
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* Contains public functions, grouped by namespace prefix, that will
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* be applied when a namespaced node is found matching the function
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* name. The function will be applied in the scope of this parser
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* with two arguments: the node being read and a context object passed
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* from the parent.
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*/
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readers: {
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"gml": OpenLayers.Util.applyDefaults({
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"outerBoundaryIs": function(node, container) {
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var obj = {};
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this.readChildNodes(node, obj);
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container.outer = obj.components[0];
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},
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"innerBoundaryIs": function(node, container) {
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var obj = {};
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this.readChildNodes(node, obj);
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container.inner.push(obj.components[0]);
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},
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"Box": function(node, container) {
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var obj = {};
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this.readChildNodes(node, obj);
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if(!container.components) {
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container.components = [];
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}
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var min = obj.points[0];
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var max = obj.points[1];
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container.components.push(
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new OpenLayers.Bounds(min.x, min.y, max.x, max.y)
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);
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}
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}, OpenLayers.Format.GML.Base.prototype.readers["gml"]),
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"feature": OpenLayers.Format.GML.Base.prototype.readers["feature"],
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"wfs": OpenLayers.Format.GML.Base.prototype.readers["wfs"]
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},
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/**
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* Method: write
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*
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* Parameters:
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* features - {Array(<OpenLayers.Feature.Vector>) | OpenLayers.Feature.Vector}
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* An array of features or a single feature.
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*
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* Returns:
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* {String} Given an array of features, a doc with a gml:featureMembers
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* element will be returned. Given a single feature, a doc with a
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* gml:featureMember element will be returned.
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*/
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write: function(features) {
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var name;
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if(OpenLayers.Util.isArray(features)) {
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// GML2 only has abstract feature collections
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// wfs provides a feature collection from a well-known schema
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name = "wfs:FeatureCollection";
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} else {
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name = "gml:featureMember";
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}
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var root = this.writeNode(name, features);
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this.setAttributeNS(
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root, this.namespaces["xsi"],
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"xsi:schemaLocation", this.schemaLocation
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);
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return OpenLayers.Format.XML.prototype.write.apply(this, [root]);
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},
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/**
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* Property: writers
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* As a compliment to the readers property, this structure contains public
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* writing functions grouped by namespace alias and named like the
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* node names they produce.
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*/
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writers: {
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"gml": OpenLayers.Util.applyDefaults({
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"Point": function(geometry) {
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var node = this.createElementNSPlus("gml:Point");
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this.writeNode("coordinates", [geometry], node);
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return node;
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},
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"coordinates": function(points) {
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var numPoints = points.length;
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var parts = new Array(numPoints);
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var point;
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for(var i=0; i<numPoints; ++i) {
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point = points[i];
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if(this.xy) {
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parts[i] = point.x + "," + point.y;
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} else {
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parts[i] = point.y + "," + point.x;
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}
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if(point.z != undefined) { // allow null or undefined
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parts[i] += "," + point.z;
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}
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}
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return this.createElementNSPlus("gml:coordinates", {
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attributes: {
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decimal: ".", cs: ",", ts: " "
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},
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value: (numPoints == 1) ? parts[0] : parts.join(" ")
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});
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},
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"LineString": function(geometry) {
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var node = this.createElementNSPlus("gml:LineString");
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this.writeNode("coordinates", geometry.components, node);
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return node;
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},
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"Polygon": function(geometry) {
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var node = this.createElementNSPlus("gml:Polygon");
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this.writeNode("outerBoundaryIs", geometry.components[0], node);
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for(var i=1; i<geometry.components.length; ++i) {
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this.writeNode(
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"innerBoundaryIs", geometry.components[i], node
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);
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}
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return node;
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},
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"outerBoundaryIs": function(ring) {
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var node = this.createElementNSPlus("gml:outerBoundaryIs");
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this.writeNode("LinearRing", ring, node);
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return node;
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},
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"innerBoundaryIs": function(ring) {
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var node = this.createElementNSPlus("gml:innerBoundaryIs");
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this.writeNode("LinearRing", ring, node);
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return node;
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},
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"LinearRing": function(ring) {
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var node = this.createElementNSPlus("gml:LinearRing");
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this.writeNode("coordinates", ring.components, node);
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return node;
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},
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"Box": function(bounds) {
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var node = this.createElementNSPlus("gml:Box");
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this.writeNode("coordinates", [
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{x: bounds.left, y: bounds.bottom},
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{x: bounds.right, y: bounds.top}
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], node);
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// srsName attribute is optional for gml:Box
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if(this.srsName) {
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node.setAttribute("srsName", this.srsName);
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}
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return node;
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}
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}, OpenLayers.Format.GML.Base.prototype.writers["gml"]),
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"feature": OpenLayers.Format.GML.Base.prototype.writers["feature"],
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"wfs": OpenLayers.Format.GML.Base.prototype.writers["wfs"]
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},
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CLASS_NAME: "OpenLayers.Format.GML.v2"
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});
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