154 lines
3.8 KiB
JavaScript
154 lines
3.8 KiB
JavaScript
goog.provide('ol.format.WMSGetFeatureInfo');
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goog.require('ol.array');
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goog.require('ol.format.GML2');
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goog.require('ol.format.XMLFeature');
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goog.require('ol.obj');
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goog.require('ol.xml');
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/**
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* @classdesc
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* Format for reading WMSGetFeatureInfo format. It uses
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* {@link ol.format.GML2} to read features.
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*
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* @constructor
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* @extends {ol.format.XMLFeature}
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* @param {olx.format.WMSGetFeatureInfoOptions=} opt_options Options.
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* @api
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*/
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ol.format.WMSGetFeatureInfo = function(opt_options) {
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var options = opt_options ? opt_options : {};
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/**
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* @private
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* @type {string}
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*/
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this.featureNS_ = 'http://mapserver.gis.umn.edu/mapserver';
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/**
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* @private
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* @type {ol.format.GML2}
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*/
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this.gmlFormat_ = new ol.format.GML2();
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/**
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* @private
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* @type {Array.<string>}
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*/
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this.layers_ = options.layers ? options.layers : null;
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ol.format.XMLFeature.call(this);
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};
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ol.inherits(ol.format.WMSGetFeatureInfo, ol.format.XMLFeature);
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/**
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* @const
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* @type {string}
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* @private
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*/
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ol.format.WMSGetFeatureInfo.featureIdentifier_ = '_feature';
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/**
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* @const
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* @type {string}
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* @private
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*/
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ol.format.WMSGetFeatureInfo.layerIdentifier_ = '_layer';
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/**
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* @param {Node} node Node.
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* @param {Array.<*>} objectStack Object stack.
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* @return {Array.<ol.Feature>} Features.
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* @private
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*/
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ol.format.WMSGetFeatureInfo.prototype.readFeatures_ = function(node, objectStack) {
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node.setAttribute('namespaceURI', this.featureNS_);
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goog.DEBUG && console.assert(node.nodeType == Node.ELEMENT_NODE,
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'node.nodeType should be ELEMENT');
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var localName = node.localName;
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/** @type {Array.<ol.Feature>} */
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var features = [];
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if (node.childNodes.length === 0) {
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return features;
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}
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if (localName == 'msGMLOutput') {
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for (var i = 0, ii = node.childNodes.length; i < ii; i++) {
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var layer = node.childNodes[i];
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if (layer.nodeType !== Node.ELEMENT_NODE) {
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continue;
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}
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var context = objectStack[0];
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goog.DEBUG && console.assert(layer.localName.indexOf(
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ol.format.WMSGetFeatureInfo.layerIdentifier_) >= 0,
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'localName of layer node should match layerIdentifier');
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var toRemove = ol.format.WMSGetFeatureInfo.layerIdentifier_;
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var layerName = layer.localName.replace(toRemove, '');
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if (this.layers_ && !ol.array.includes(this.layers_, layerName)) {
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continue;
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}
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var featureType = layerName +
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ol.format.WMSGetFeatureInfo.featureIdentifier_;
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context['featureType'] = featureType;
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context['featureNS'] = this.featureNS_;
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var parsers = {};
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parsers[featureType] = ol.xml.makeArrayPusher(
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this.gmlFormat_.readFeatureElement, this.gmlFormat_);
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var parsersNS = ol.xml.makeStructureNS(
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[context['featureNS'], null], parsers);
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layer.setAttribute('namespaceURI', this.featureNS_);
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var layerFeatures = ol.xml.pushParseAndPop(
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[], parsersNS, layer, objectStack, this.gmlFormat_);
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if (layerFeatures) {
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ol.array.extend(features, layerFeatures);
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}
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}
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}
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if (localName == 'FeatureCollection') {
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var gmlFeatures = ol.xml.pushParseAndPop([],
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this.gmlFormat_.FEATURE_COLLECTION_PARSERS, node,
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[{}], this.gmlFormat_);
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if (gmlFeatures) {
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features = gmlFeatures;
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}
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}
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return features;
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};
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/**
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* Read all features from a WMSGetFeatureInfo response.
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*
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* @function
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* @param {Document|Node|Object|string} source Source.
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* @param {olx.format.ReadOptions=} opt_options Options.
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* @return {Array.<ol.Feature>} Features.
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* @api stable
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*/
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ol.format.WMSGetFeatureInfo.prototype.readFeatures;
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/**
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* @inheritDoc
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*/
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ol.format.WMSGetFeatureInfo.prototype.readFeaturesFromNode = function(node, opt_options) {
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var options = {};
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if (opt_options) {
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ol.obj.assign(options, this.getReadOptions(node, opt_options));
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}
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return this.readFeatures_(node, [options]);
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};
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