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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/XML.js
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* @requires OpenLayers/Format/KML.js
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* @requires OpenLayers/Format/GML.js
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* @requires OpenLayers/Format/GML/v2.js
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* @requires OpenLayers/Format/SLD/v1_0_0.js
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* @requires OpenLayers/Format/OWSContext.js
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* @requires OpenLayers/Format/OWSCommon/v1_0_0.js
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*/
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/**
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* Class: OpenLayers.Format.OWSContext.v0_3_1
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* Read and write OWSContext version 0.3.1.
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*
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* Inherits from:
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* - <OpenLayers.Format.XML>
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*/
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OpenLayers.Format.OWSContext.v0_3_1 = OpenLayers.Class(OpenLayers.Format.XML, {
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/**
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* Property: namespaces
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* {Object} Mapping of namespace aliases to namespace URIs.
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*/
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namespaces: {
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owc: "http://www.opengis.net/ows-context",
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gml: "http://www.opengis.net/gml",
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kml: "http://www.opengis.net/kml/2.2",
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ogc: "http://www.opengis.net/ogc",
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ows: "http://www.opengis.net/ows",
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sld: "http://www.opengis.net/sld",
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xlink: "http://www.w3.org/1999/xlink",
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xsi: "http://www.w3.org/2001/XMLSchema-instance"
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},
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/**
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* Constant: VERSION
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* {String} 0.3.1
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*/
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VERSION: "0.3.1",
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/**
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* Property: schemaLocation
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* {String} Schema location
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*/
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schemaLocation: "http://www.opengis.net/ows-context http://www.ogcnetwork.net/schemas/owc/0.3.1/owsContext.xsd",
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/**
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* Property: defaultPrefix
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* {String} Default namespace prefix to use.
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*/
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defaultPrefix: "owc",
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/**
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* APIProperty: extractAttributes
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* {Boolean} Extract attributes from GML. Default is true.
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*/
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extractAttributes: true,
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/**
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* APIProperty: xy
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* {Boolean} Order of the GML coordinate true:(x,y) or false:(y,x)
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* Changing is not recommended, a new Format should be instantiated.
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*/
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xy: true,
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/**
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* Property: regExes
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* Compiled regular expressions for manipulating strings.
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*/
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regExes: {
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trimSpace: (/^\s*|\s*$/g),
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removeSpace: (/\s*/g),
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splitSpace: (/\s+/),
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trimComma: (/\s*,\s*/g)
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},
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/**
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* Property: featureNS
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* {String} The namespace uri to use for writing InlineGeometry
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*/
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featureNS: "http://mapserver.gis.umn.edu/mapserver",
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/**
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* Property: featureType
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* {String} The name to use as the feature type when writing out
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* InlineGeometry
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*/
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featureType: 'vector',
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/**
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* Property: geometryName
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* {String} The name to use for the geometry attribute when writing out
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* InlineGeometry
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*/
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geometryName: 'geometry',
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/**
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* Property: nestingLayerLookup
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* {Object} Hashtable lookup for nesting layer nodes. Used while writing
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* the OWS context document. It is necessary to keep track of the
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* nestingPaths for which nesting layer nodes have already been
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* created, so (nesting) layer nodes are added to those nodes.
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*
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* For example:
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*
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* If there are three layers with nestingPaths:
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* layer1.metadata.nestingPath = "a/b/"
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* layer2.metadata.nestingPath = "a/b/"
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* layer2.metadata.nestingPath = "a/c"
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*
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* then a nesting layer node "a" should be created once and added
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* to the resource list, a nesting layer node "b" should be created
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* once and added under "a", and a nesting layer node "c" should be
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* created and added under "a". The lookup paths for these nodes
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* will be "a", "a/b", and "a/c" respectively.
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*/
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nestingLayerLookup: null,
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/**
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* Constructor: OpenLayers.Format.OWSContext.v0_3_1
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* Instances of this class are not created directly. Use the
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* <OpenLayers.Format.OWSContext> constructor instead.
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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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initialize: function(options) {
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OpenLayers.Format.XML.prototype.initialize.apply(this, [options]);
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OpenLayers.Format.GML.v2.prototype.setGeometryTypes.call(this);
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},
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/**
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* Method: setNestingPath
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* Set the nestingPath property of the layer depending on the position
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* of the layer in hierarchy of layers.
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*
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* Parameters:
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* l - {Object} An object that may have a layersContext array property.
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*
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*/
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setNestingPath : function(l){
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if(l.layersContext){
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for (var i = 0, len = l.layersContext.length; i < len; i++) {
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var layerContext = l.layersContext[i];
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var nPath = [];
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var nTitle = l.title || "";
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if(l.metadata && l.metadata.nestingPath){
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nPath = l.metadata.nestingPath.slice();
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}
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if (nTitle != "") {
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nPath.push(nTitle);
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}
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layerContext.metadata.nestingPath = nPath;
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if(layerContext.layersContext){
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this.setNestingPath(layerContext);
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}
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}
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}
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},
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/**
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* Function: decomposeNestingPath
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* Takes a nestingPath like "a/b/c" and decomposes it into subpaths:
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* "a", "a/b", "a/b/c"
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*
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* Parameters:
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* nPath - {Array} the nesting path
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*
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* Returns:
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* Array({String}) Array with subpaths, or empty array if there is nothing
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* to decompose
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*/
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decomposeNestingPath: function(nPath){
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var a = [];
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if (OpenLayers.Util.isArray(nPath)) {
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var path = nPath.slice();
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while (path.length > 0) {
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a.push(path.slice());
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path.pop();
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}
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a.reverse();
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}
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return a;
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},
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/**
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* APIMethod: read
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* Read OWS context data from a string or DOMElement, and return a list
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* of layers.
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*
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* Parameters:
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* data - {String} or {DOMElement} data to read/parse.
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*
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* Returns:
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* {Object} The context object with a flat layer list as a property named
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* layersContext.
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*/
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read: function(data) {
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if(typeof data == "string") {
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data = OpenLayers.Format.XML.prototype.read.apply(this, [data]);
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}
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if(data && data.nodeType == 9) {
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data = data.documentElement;
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}
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var context = {};
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this.readNode(data, context);
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// since an OWSContext can be nested we need to go through this
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// structure recursively
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this.setNestingPath({layersContext : context.layersContext});
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// after nesting path has been set, create a flat list of layers
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var layers = [];
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this.processLayer(layers, context);
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delete context.layersContext;
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context.layersContext = layers;
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return context;
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},
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/**
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* Method: processLayer
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* Recursive function to get back a flat list of layers from the hierarchic
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* layer structure.
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*
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* Parameters:
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* layerArray - {Array({Object})} Array of layerContext objects
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* layer - {Object} layerContext object
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*/
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processLayer: function(layerArray, layer) {
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if (layer.layersContext) {
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for (var i=0, len = layer.layersContext.length; i<len; i++) {
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var l = layer.layersContext[i];
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layerArray.push(l);
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if (l.layersContext) {
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this.processLayer(layerArray, l);
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}
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}
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}
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},
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/**
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* APIMethod: write
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*
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* Parameters:
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* context - {Object} An object representing the map context.
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* options - {Object} Optional object.
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*
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* Returns:
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* {String} An OWS Context document string.
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*/
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write: function(context, options) {
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var name = "OWSContext";
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this.nestingLayerLookup = {}; //start with empty lookup
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options = options || {};
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OpenLayers.Util.applyDefaults(options, context);
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var root = this.writeNode(name, options);
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this.nestingLayerLookup = null; //clear lookup
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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: 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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"kml": {
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"Document": function(node, obj) {
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obj.features = new OpenLayers.Format.KML(
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{kmlns: this.namespaces.kml,
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extractStyles: true}).read(node);
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}
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},
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"owc": {
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"OWSContext": function(node, obj) {
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this.readChildNodes(node, obj);
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},
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"General": function(node, obj) {
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this.readChildNodes(node, obj);
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},
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"ResourceList": function(node, obj) {
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this.readChildNodes(node, obj);
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},
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"Layer": function(node, obj) {
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var layerContext = {
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metadata: {},
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visibility: (node.getAttribute("hidden") != "1"),
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queryable: (node.getAttribute("queryable") == "1"),
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opacity: ((node.getAttribute("opacity") != null) ?
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parseFloat(node.getAttribute("opacity")) : null),
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name: node.getAttribute("name"),
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/* A category layer is a dummy layer meant for creating
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hierarchies. It is not a physical layer in the
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OpenLayers sense. The assumption we make here is that
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category layers do not have a name attribute */
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categoryLayer: (node.getAttribute("name") == null),
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formats: [],
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styles: []
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};
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if (!obj.layersContext) {
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obj.layersContext = [];
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}
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obj.layersContext.push(layerContext);
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this.readChildNodes(node, layerContext);
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},
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"InlineGeometry": function(node, obj) {
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obj.features = [];
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var elements = this.getElementsByTagNameNS(node,
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this.namespaces.gml, "featureMember");
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var el;
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if (elements.length >= 1) {
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el = elements[0];
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}
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if (el && el.firstChild) {
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var featurenode = (el.firstChild.nextSibling) ?
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el.firstChild.nextSibling : el.firstChild;
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this.setNamespace("feature", featurenode.namespaceURI);
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this.featureType = featurenode.localName ||
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featurenode.nodeName.split(":").pop();
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this.readChildNodes(node, obj);
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}
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},
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"Server": function(node, obj) {
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// when having multiple Server types, we prefer WMS
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if ((!obj.service && !obj.version) ||
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(obj.service !=
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OpenLayers.Format.Context.serviceTypes.WMS)) {
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obj.service = node.getAttribute("service");
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obj.version = node.getAttribute("version");
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this.readChildNodes(node, obj);
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}
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},
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"Name": function(node, obj) {
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obj.name = this.getChildValue(node);
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this.readChildNodes(node, obj);
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},
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"Title": function(node, obj) {
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obj.title = this.getChildValue(node);
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this.readChildNodes(node, obj);
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},
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"StyleList": function(node, obj) {
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this.readChildNodes(node, obj.styles);
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},
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"Style": function(node, obj) {
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var style = {};
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obj.push(style);
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this.readChildNodes(node, style);
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},
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"LegendURL": function(node, obj) {
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var legend = {};
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obj.legend = legend;
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this.readChildNodes(node, legend);
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},
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"OnlineResource": function(node, obj) {
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obj.url = this.getAttributeNS(node, this.namespaces.xlink,
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"href");
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this.readChildNodes(node, obj);
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}
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},
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"ows": OpenLayers.Format.OWSCommon.v1_0_0.prototype.readers.ows,
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372
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"gml": OpenLayers.Format.GML.v2.prototype.readers.gml,
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373
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"sld": OpenLayers.Format.SLD.v1_0_0.prototype.readers.sld,
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374
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"feature": OpenLayers.Format.GML.v2.prototype.readers.feature
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375
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},
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376
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377
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/**
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378
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* Property: writers
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379
|
* As a compliment to the readers property, this structure contains public
|
|
380
|
* writing functions grouped by namespace alias and named like the
|
|
381
|
* node names they produce.
|
|
382
|
*/
|
|
383
|
writers: {
|
|
384
|
"owc": {
|
|
385
|
"OWSContext": function(options) {
|
|
386
|
var node = this.createElementNSPlus("OWSContext", {
|
|
387
|
attributes: {
|
|
388
|
version: this.VERSION,
|
|
389
|
id: options.id || OpenLayers.Util.createUniqueID("OpenLayers_OWSContext_")
|
|
390
|
}
|
|
391
|
});
|
|
392
|
this.writeNode("General", options, node);
|
|
393
|
this.writeNode("ResourceList", options, node);
|
|
394
|
return node;
|
|
395
|
},
|
|
396
|
"General": function(options) {
|
|
397
|
var node = this.createElementNSPlus("General");
|
|
398
|
this.writeNode("ows:BoundingBox", options, node);
|
|
399
|
this.writeNode("ows:Title", options.title || 'OpenLayers OWSContext', node);
|
|
400
|
return node;
|
|
401
|
},
|
|
402
|
"ResourceList": function(options) {
|
|
403
|
var node = this.createElementNSPlus("ResourceList");
|
|
404
|
for (var i=0, len=options.layers.length; i<len; i++) {
|
|
405
|
var layer = options.layers[i];
|
|
406
|
var decomposedPath = this.decomposeNestingPath(layer.metadata.nestingPath);
|
|
407
|
this.writeNode("_Layer", {layer: layer, subPaths: decomposedPath}, node);
|
|
408
|
}
|
|
409
|
return node;
|
|
410
|
},
|
|
411
|
"Server": function(options) {
|
|
412
|
var node = this.createElementNSPlus("Server", {attributes: {
|
|
413
|
version: options.version,
|
|
414
|
service: options.service }
|
|
415
|
});
|
|
416
|
this.writeNode("OnlineResource", options, node);
|
|
417
|
return node;
|
|
418
|
},
|
|
419
|
"OnlineResource": function(options) {
|
|
420
|
var node = this.createElementNSPlus("OnlineResource", {attributes: {
|
|
421
|
"xlink:href": options.url }
|
|
422
|
});
|
|
423
|
return node;
|
|
424
|
},
|
|
425
|
"InlineGeometry": function(layer) {
|
|
426
|
var node = this.createElementNSPlus("InlineGeometry"),
|
|
427
|
dataExtent = layer.getDataExtent();
|
|
428
|
if (dataExtent !== null) {
|
|
429
|
this.writeNode("gml:boundedBy", dataExtent, node);
|
|
430
|
}
|
|
431
|
for (var i=0, len=layer.features.length; i<len; i++) {
|
|
432
|
this.writeNode("gml:featureMember", layer.features[i], node);
|
|
433
|
}
|
|
434
|
return node;
|
|
435
|
},
|
|
436
|
"StyleList": function(styles) {
|
|
437
|
var node = this.createElementNSPlus("StyleList");
|
|
438
|
for (var i=0, len=styles.length; i<len; i++) {
|
|
439
|
this.writeNode("Style", styles[i], node);
|
|
440
|
}
|
|
441
|
return node;
|
|
442
|
},
|
|
443
|
"Style": function(style) {
|
|
444
|
var node = this.createElementNSPlus("Style");
|
|
445
|
this.writeNode("Name", style, node);
|
|
446
|
this.writeNode("Title", style, node);
|
|
447
|
if (style.legend) {
|
|
448
|
this.writeNode("LegendURL", style, node);
|
|
449
|
}
|
|
450
|
return node;
|
|
451
|
},
|
|
452
|
"Name": function(obj) {
|
|
453
|
var node = this.createElementNSPlus("Name", {
|
|
454
|
value: obj.name });
|
|
455
|
return node;
|
|
456
|
},
|
|
457
|
"Title": function(obj) {
|
|
458
|
var node = this.createElementNSPlus("Title", {
|
|
459
|
value: obj.title });
|
|
460
|
return node;
|
|
461
|
},
|
|
462
|
"LegendURL": function(style) {
|
|
463
|
var node = this.createElementNSPlus("LegendURL");
|
|
464
|
this.writeNode("OnlineResource", style.legend, node);
|
|
465
|
return node;
|
|
466
|
},
|
|
467
|
"_WMS": function(layer) {
|
|
468
|
var node = this.createElementNSPlus("Layer", {attributes: {
|
|
469
|
name: layer.params.LAYERS,
|
|
470
|
queryable: layer.queryable ? "1" : "0",
|
|
471
|
hidden: layer.visibility ? "0" : "1",
|
|
472
|
opacity: layer.hasOwnProperty("opacity") ? layer.opacity : null}
|
|
473
|
});
|
|
474
|
this.writeNode("ows:Title", layer.name, node);
|
|
475
|
this.writeNode("ows:OutputFormat", layer.params.FORMAT, node);
|
|
476
|
this.writeNode("Server", {service:
|
|
477
|
OpenLayers.Format.Context.serviceTypes.WMS,
|
|
478
|
version: layer.params.VERSION, url: layer.url}, node);
|
|
479
|
if (layer.metadata.styles && layer.metadata.styles.length > 0) {
|
|
480
|
this.writeNode("StyleList", layer.metadata.styles, node);
|
|
481
|
}
|
|
482
|
return node;
|
|
483
|
},
|
|
484
|
"_Layer": function(options) {
|
|
485
|
var layer, subPaths, node, title;
|
|
486
|
layer = options.layer;
|
|
487
|
subPaths = options.subPaths;
|
|
488
|
node = null;
|
|
489
|
title = null;
|
|
490
|
// subPaths is an array of an array
|
|
491
|
// recursively calling _Layer writer eats up subPaths, until a
|
|
492
|
// real writer is called and nodes are returned.
|
|
493
|
if(subPaths.length > 0){
|
|
494
|
var path = subPaths[0].join("/");
|
|
495
|
var index = path.lastIndexOf("/");
|
|
496
|
node = this.nestingLayerLookup[path];
|
|
497
|
title = (index > 0)?path.substring(index + 1, path.length):path;
|
|
498
|
if(!node){
|
|
499
|
// category layer
|
|
500
|
node = this.createElementNSPlus("Layer");
|
|
501
|
this.writeNode("ows:Title", title, node);
|
|
502
|
this.nestingLayerLookup[path] = node;
|
|
503
|
}
|
|
504
|
options.subPaths.shift();//remove a path after each call
|
|
505
|
this.writeNode("_Layer", options, node);
|
|
506
|
return node;
|
|
507
|
} else {
|
|
508
|
// write out the actual layer
|
|
509
|
if (layer instanceof OpenLayers.Layer.WMS) {
|
|
510
|
node = this.writeNode("_WMS", layer);
|
|
511
|
} else if (layer instanceof OpenLayers.Layer.Vector) {
|
|
512
|
if (layer.protocol instanceof OpenLayers.Protocol.WFS.v1) {
|
|
513
|
node = this.writeNode("_WFS", layer);
|
|
514
|
} else if (layer.protocol instanceof OpenLayers.Protocol.HTTP) {
|
|
515
|
if (layer.protocol.format instanceof OpenLayers.Format.GML) {
|
|
516
|
layer.protocol.format.version = "2.1.2";
|
|
517
|
node = this.writeNode("_GML", layer);
|
|
518
|
} else if (layer.protocol.format instanceof OpenLayers.Format.KML) {
|
|
519
|
layer.protocol.format.version = "2.2";
|
|
520
|
node = this.writeNode("_KML", layer);
|
|
521
|
}
|
|
522
|
} else {
|
|
523
|
// write out as inline GML since we have no idea
|
|
524
|
// about the original Format
|
|
525
|
this.setNamespace("feature", this.featureNS);
|
|
526
|
node = this.writeNode("_InlineGeometry", layer);
|
|
527
|
}
|
|
528
|
}
|
|
529
|
if (layer.options.maxScale) {
|
|
530
|
this.writeNode("sld:MinScaleDenominator",
|
|
531
|
layer.options.maxScale, node);
|
|
532
|
}
|
|
533
|
if (layer.options.minScale) {
|
|
534
|
this.writeNode("sld:MaxScaleDenominator",
|
|
535
|
layer.options.minScale, node);
|
|
536
|
}
|
|
537
|
this.nestingLayerLookup[layer.name] = node;
|
|
538
|
return node;
|
|
539
|
}
|
|
540
|
},
|
|
541
|
"_WFS": function(layer) {
|
|
542
|
var node = this.createElementNSPlus("Layer", {attributes: {
|
|
543
|
name: layer.protocol.featurePrefix + ":" + layer.protocol.featureType,
|
|
544
|
hidden: layer.visibility ? "0" : "1" }
|
|
545
|
});
|
|
546
|
this.writeNode("ows:Title", layer.name, node);
|
|
547
|
this.writeNode("Server", {service:
|
|
548
|
OpenLayers.Format.Context.serviceTypes.WFS,
|
|
549
|
version: layer.protocol.version,
|
|
550
|
url: layer.protocol.url}, node);
|
|
551
|
return node;
|
|
552
|
},
|
|
553
|
"_InlineGeometry": function(layer) {
|
|
554
|
var node = this.createElementNSPlus("Layer", {attributes: {
|
|
555
|
name: this.featureType,
|
|
556
|
hidden: layer.visibility ? "0" : "1" }
|
|
557
|
});
|
|
558
|
this.writeNode("ows:Title", layer.name, node);
|
|
559
|
this.writeNode("InlineGeometry", layer, node);
|
|
560
|
return node;
|
|
561
|
},
|
|
562
|
"_GML": function(layer) {
|
|
563
|
var node = this.createElementNSPlus("Layer");
|
|
564
|
this.writeNode("ows:Title", layer.name, node);
|
|
565
|
this.writeNode("Server", {service:
|
|
566
|
OpenLayers.Format.Context.serviceTypes.GML,
|
|
567
|
url: layer.protocol.url, version:
|
|
568
|
layer.protocol.format.version}, node);
|
|
569
|
return node;
|
|
570
|
},
|
|
571
|
"_KML": function(layer) {
|
|
572
|
var node = this.createElementNSPlus("Layer");
|
|
573
|
this.writeNode("ows:Title", layer.name, node);
|
|
574
|
this.writeNode("Server", {service:
|
|
575
|
OpenLayers.Format.Context.serviceTypes.KML,
|
|
576
|
version: layer.protocol.format.version, url:
|
|
577
|
layer.protocol.url}, node);
|
|
578
|
return node;
|
|
579
|
}
|
|
580
|
},
|
|
581
|
"gml": OpenLayers.Util.applyDefaults({
|
|
582
|
"boundedBy": function(bounds) {
|
|
583
|
var node = this.createElementNSPlus("gml:boundedBy");
|
|
584
|
this.writeNode("gml:Box", bounds, node);
|
|
585
|
return node;
|
|
586
|
}
|
|
587
|
}, OpenLayers.Format.GML.v2.prototype.writers.gml),
|
|
588
|
"ows": OpenLayers.Format.OWSCommon.v1_0_0.prototype.writers.ows,
|
|
589
|
"sld": OpenLayers.Format.SLD.v1_0_0.prototype.writers.sld,
|
|
590
|
"feature": OpenLayers.Format.GML.v2.prototype.writers.feature
|
|
591
|
},
|
|
592
|
|
|
593
|
CLASS_NAME: "OpenLayers.Format.OWSContext.v0_3_1"
|
|
594
|
|
|
595
|
});
|