WMSGetFeatureInfo class with tests. Should have gone in with my previous
commit, but forgot to svn a. (see #1812) git-svn-id: http://svn.openlayers.org/trunk/openlayers@8920 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf
This commit is contained in:
ahocevar
686
lib/OpenLayers/Format/WMSGetFeatureInfo.js
Normal file
686
lib/OpenLayers/Format/WMSGetFeatureInfo.js
Normal file
@@ -0,0 +1,686 @@
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/* Copyright (c) 2006-2008 MetaCarta, Inc., published under the Clear BSD
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* license. See http://svn.openlayers.org/trunk/openlayers/license.txt 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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*/
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/**
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* Class: OpenLayers.Format.WMSGetFeatureInfo
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* Class to read GetFeatureInfo responses from Web Mapping Services
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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.WMSGetFeatureInfo = OpenLayers.Class(OpenLayers.Format.XML, {
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/**
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* APIProperty: layerIdentifier
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* {String} All xml nodes containing this search criteria will populate an
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* internal array of layer nodes.
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*/
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layerIdentifier: '_layer',
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/**
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* APIProperty: featureIdentifier
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* {String} All xml nodes containing this search criteria will populate an
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* internal array of feature nodes for each layer node found.
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*/
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featureIdentifier: '_feature',
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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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* Constructor: OpenLayers.Format.WMSGetFeatureInfo
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* Create a new parser for WMS GetFeatureInfo responses
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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, arguments);
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OpenLayers.Util.extend(this, options);
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this.options = options;
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},
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/**
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* APIMethod: read
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* Read WMS GetFeatureInfo data from a string, and return an array of features
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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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* {Array(<OpenLayers.Feature.Vector>)} An array of features.
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*/
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read: function(data) {
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var result;
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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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var root = data.documentElement;
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var scope = this;
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var read = this["read_" + root.nodeName];
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if(read) {
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result = read.call(this, root);
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} else {
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// fall-back to GML since this is a common output format for WMS
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// GetFeatureInfo responses
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result = new OpenLayers.Format.GML((this.options ? this.options : {})).read(data);
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}
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return result;
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},
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/**
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* Method: read_msGMLOutput
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* Parse msGMLOutput nodes.
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*
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* Parameters:
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* data - {DOMElement}
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*
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* Returns:
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* {Array}
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*/
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read_msGMLOutput: function(data) {
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var response = [];
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var layerNodes, n;
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layerNodes = this.getSiblingNodesByTagCriteria(data,
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this.layerIdentifier);
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if (layerNodes) {
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n = layerNodes.length;
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for (var i = 0; i < n; i++) {
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var node = layerNodes[i];
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var layerName = node.nodeName;
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if (node.prefix) {
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layerName = layerName.split(':')[1];
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}
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var layerName = layerName.replace(this.layerIdentifier, '');
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var featureNodes = this.getSiblingNodesByTagCriteria(node,
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this.featureIdentifier);
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if (featureNodes) {
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for (var j = 0; j < featureNodes.length; j++) {
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var featureNode = featureNodes[j];
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var geom = null;
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var attributes = this.parseAttributes(featureNode);
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var feature = new OpenLayers.Feature.Vector(geom,
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attributes, null);
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feature.type = layerName;
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response.push(feature);
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}
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}
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}
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}
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return response;
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},
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/**
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* Method: read_FeatureInfoResponse
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* Parse FeatureInfoResponse nodes.
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*
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* Parameters:
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* data - {DOMElement}
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*
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* Returns:
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* {Array}
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*/
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read_FeatureInfoResponse: function(data) {
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var response = [];
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var featureNodes = this.getElementsByTagNameNS(data, '*',
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'FIELDS');
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for(var i=0, len=featureNodes.length;i<len;i++) {
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var featureNode = featureNodes[i];
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var geom = null;
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var attributes = {};
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for(var j=0, jlen=featureNode.attributes.length; j<jlen; j++) {
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var attribute = featureNode.attributes[j];
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attributes[attribute.nodeName] = attribute.nodeValue;
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}
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response.push(
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new OpenLayers.Feature.Vector(geom, attributes, null)
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);
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}
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return response;
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},
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/**
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* Method: getSiblingNodesByTagCriteria
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* Recursively searches passed xml node and all it's descendant levels for
|
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* nodes whose tagName contains the passed search string. This returns an
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* array of all sibling nodes which match the criteria from the highest
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* hierarchial level from which a match is found.
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*
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* Parameters:
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* node - {DOMElement} An xml node
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* criteria - {String} Search string which will match some part of a tagName
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*
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* Returns:
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* Array({DOMElement)) An array of sibling xml nodes
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*/
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getSiblingNodesByTagCriteria: function(node, criteria){
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var nodes = [];
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var children, tagName, n, matchNodes, child;
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if (node && node.hasChildNodes()) {
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children = node.childNodes;
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n = children.length;
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child = children[0];
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while (child && child.nodeType != 1) {
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child = child.nextSibling;
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}
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tagName = (child ? child.nodeName : '');
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if (tagName.length > 0 && tagName.indexOf(criteria) > -1) {
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for (var i = 0; i < n; i++) {
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child = children[i];
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if (child.nodeType == 1) {
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nodes.push(child);
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}
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}
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}
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else {
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for (var i = 0; i < n; i++) {
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matchNodes = this.getSiblingNodesByTagCriteria(
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children[i], criteria);
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(nodes.length == 0) ?
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nodes = matchNodes : nodes.push(matchNodes);
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}
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}
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}
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return nodes;
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},
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/**
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* Method: parseAttributes
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*
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* Parameters:
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* node - {<DOMElement>}
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*
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* Returns:
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* {Object} An attributes object.
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*
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* Notes:
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* Assumes that attributes are direct child xml nodes of the passed node
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* and contain only a single text node.
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*/
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parseAttributes: function(node){
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var attributes = {};
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if (node.nodeType == 1) {
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var children = node.childNodes;
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n = children.length
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for (var i = 0; i < n; ++i) {
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var child = children[i];
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if (child.nodeType == 1) {
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var grandchildren = child.childNodes;
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if (grandchildren.length == 1) {
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var grandchild = grandchildren[0];
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if (grandchild.nodeType == 3 ||
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grandchild.nodeType == 4) {
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var name = (child.prefix) ?
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child.nodeName.split(":")[1] : child.nodeName;
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var value = grandchild.nodeValue.replace(
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this.regExes.trimSpace, "");
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attributes[name] = value;
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}
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}
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}
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}
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}
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return attributes;
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},
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CLASS_NAME: "OpenLayers.Format.WMSGetFeatureInfo"
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});
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/**
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* @requires OpenLayers/Format/XML.js
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**/
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/**
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* Class: OpenLayers.Format.WMSGetFeatureInfo
|
||||
* Class to read GetFeatureInfo responses from Web Mapping Services
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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.WMSGetFeatureInfo = OpenLayers.Class(OpenLayers.Format.XML, {
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/**
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* APIProperty: layerIdentifier
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* {String} All xml nodes containing this search criteria will populate an
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||||
* internal array of layer nodes.
|
||||
*/
|
||||
layerIdentifier: '_layer',
|
||||
|
||||
/**
|
||||
* APIProperty: featureIdentifier
|
||||
* {String} All xml nodes containing this search criteria will populate an
|
||||
* internal array of feature nodes for each layer node found.
|
||||
*/
|
||||
featureIdentifier: '_feature',
|
||||
|
||||
/**
|
||||
* Property: regExes
|
||||
* Compiled regular expressions for manipulating strings.
|
||||
*/
|
||||
regExes: {
|
||||
trimSpace: (/^\s*|\s*$/g),
|
||||
removeSpace: (/\s*/g),
|
||||
splitSpace: (/\s+/),
|
||||
trimComma: (/\s*,\s*/g)
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},
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/**
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* Constructor: OpenLayers.Format.WMSGetFeatureInfo
|
||||
* Create a new parser for WMS GetFeatureInfo responses
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*
|
||||
* Parameters:
|
||||
* options - {Object} An optional object whose properties will be set on
|
||||
* this instance.
|
||||
*/
|
||||
initialize: function(options) {
|
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OpenLayers.Format.XML.prototype.initialize.apply(this, arguments);
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OpenLayers.Util.extend(this, options);
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this.options = options;
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},
|
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/**
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* APIMethod: read
|
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* Read WMS GetFeatureInfo data from a string, and return an array of features
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*
|
||||
* Parameters:
|
||||
* data - {String} or {DOMElement} data to read/parse.
|
||||
*
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||||
* Returns:
|
||||
* {Array(<OpenLayers.Feature.Vector>)} An array of features.
|
||||
*/
|
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read: function(data) {
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var result;
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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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var root = data.documentElement;
|
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var scope = this;
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var read = this["read_" + root.nodeName];
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if(read) {
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result = read.call(this, root);
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} else {
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// fall-back to GML since this is a common output format for WMS
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// GetFeatureInfo responses
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result = new OpenLayers.Format.GML((this.options ? this.options : {})).read(data);
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}
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return result;
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},
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read_msGMLOutput: function(data) {
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var response = [];
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var layerNodes, n;
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layerNodes = this.getSiblingNodesByTagCriteria(data,
|
||||
this.layerIdentifier);
|
||||
if (layerNodes) {
|
||||
n = layerNodes.length;
|
||||
for (var i = 0; i < n; i++) {
|
||||
var node = layerNodes[i];
|
||||
var layerName = node.nodeName;
|
||||
if (node.prefix) {
|
||||
layerName = layerName.split(':')[1];
|
||||
}
|
||||
var layerName = layerName.replace(this.layerIdentifier, '');
|
||||
var featureNodes = this.getSiblingNodesByTagCriteria(node,
|
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this.featureIdentifier);
|
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if (featureNodes) {
|
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for (var j = 0; j < featureNodes.length; j++) {
|
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var featureNode = featureNodes[j];
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var geom = null;
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||||
var attributes = this.parseAttributes(featureNode);
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var feature = new OpenLayers.Feature.Vector(geom,
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||||
attributes, null);
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feature.type = layerName;
|
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response.push(feature);
|
||||
}
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}
|
||||
}
|
||||
return response;
|
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}
|
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},
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||||
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read_FeatureInfoResponse: function(data) {
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||||
var response = [];
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||||
var featureNodes = this.getElementsByTagNameNS(data, '*',
|
||||
'FIELDS');
|
||||
|
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for(var i=0;i<featureNodes.length;i++) {
|
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var featureNode = featureNodes[i];
|
||||
var geom = null;
|
||||
|
||||
var attributes = {};
|
||||
for(var j=0; j<featureNode.attributes.length; j++) {
|
||||
var attribute = featureNode.attributes[j];
|
||||
attributes[attribute.nodeName] = attribute.nodeValue;
|
||||
}
|
||||
|
||||
response.push(new OpenLayers.Feature.Vector(
|
||||
geom, attributes, null));
|
||||
}
|
||||
return response;
|
||||
},
|
||||
|
||||
/**
|
||||
* Method: getSiblingNodesByTagCriteria
|
||||
* Recursively searches passed xml node and all it's descendant levels for
|
||||
* nodes whose tagName contains the passed search string. This returns an
|
||||
* array of all sibling nodes which match the criteria from the highest
|
||||
* hierarchial level from which a match is found.
|
||||
*
|
||||
* Parameters:
|
||||
* node - {DOMElement} An xml node
|
||||
* criteria - {String} Search string which will match some part of a tagName
|
||||
*
|
||||
* Returns:
|
||||
* Array({DOMElement)) An array of sibling xml nodes
|
||||
*/
|
||||
getSiblingNodesByTagCriteria: function(node, criteria){
|
||||
var nodes = [];
|
||||
var children, tagName, n, matchNodes, child;
|
||||
if (node && node.hasChildNodes()) {
|
||||
children = node.childNodes;
|
||||
n = children.length;
|
||||
child = children[0];
|
||||
while (child && child.nodeType != 1) {
|
||||
child = child.nextSibling;
|
||||
}
|
||||
tagName = (child ? child.nodeName : '');
|
||||
if (tagName.length > 0 && tagName.indexOf(criteria) > -1) {
|
||||
for (var i = 0; i < n; i++) {
|
||||
child = children[i];
|
||||
if (child.nodeType == 1) {
|
||||
nodes.push(child);
|
||||
}
|
||||
}
|
||||
}
|
||||
else {
|
||||
for (var i = 0; i < n; i++) {
|
||||
matchNodes = this.getSiblingNodesByTagCriteria(
|
||||
children[i], criteria);
|
||||
(nodes.length == 0) ?
|
||||
nodes = matchNodes : nodes.push(matchNodes);
|
||||
}
|
||||
}
|
||||
}
|
||||
return nodes;
|
||||
},
|
||||
|
||||
/**
|
||||
* Method: parseAttributes
|
||||
*
|
||||
* Parameters:
|
||||
* node - {<DOMElement>}
|
||||
*
|
||||
* Returns:
|
||||
* {Object} An attributes object.
|
||||
*
|
||||
* Notes:
|
||||
* Assumes that attributes are direct child xml nodes of the passed node
|
||||
* and contain only a single text node.
|
||||
*/
|
||||
parseAttributes: function(node){
|
||||
var attributes = {};
|
||||
if (node.nodeType == 1) {
|
||||
var children = node.childNodes;
|
||||
n = children.length
|
||||
for (var i = 0; i < n; ++i) {
|
||||
var child = children[i];
|
||||
if (child.nodeType == 1) {
|
||||
var grandchildren = child.childNodes;
|
||||
if (grandchildren.length == 1) {
|
||||
var grandchild = grandchildren[0];
|
||||
if (grandchild.nodeType == 3 ||
|
||||
grandchild.nodeType == 4) {
|
||||
var name = (child.prefix) ?
|
||||
child.nodeName.split(":")[1] : child.nodeName;
|
||||
var value = grandchild.nodeValue.replace(
|
||||
this.regExes.trimSpace, "");
|
||||
attributes[name] = value;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
return attributes;
|
||||
},
|
||||
|
||||
CLASS_NAME: "OpenLayers.Format.WMSGetFeatureInfo"
|
||||
|
||||
});
|
||||
/**
|
||||
* @requires OpenLayers/Format/XML.js
|
||||
**/
|
||||
|
||||
/**
|
||||
* Class: OpenLayers.Format.WMSGetFeatureInfo
|
||||
* Class to read GetFeatureInfo responses from Web Mapping Services
|
||||
*
|
||||
* Inherits from:
|
||||
* - <OpenLayers.Format.XML>
|
||||
*/
|
||||
OpenLayers.Format.WMSGetFeatureInfo = OpenLayers.Class(OpenLayers.Format.XML, {
|
||||
|
||||
/**
|
||||
* APIProperty: layerIdentifier
|
||||
* {String} All xml nodes containing this search criteria will populate an
|
||||
* internal array of layer nodes.
|
||||
*/
|
||||
layerIdentifier: '_layer',
|
||||
|
||||
/**
|
||||
* APIProperty: featureIdentifier
|
||||
* {String} All xml nodes containing this search criteria will populate an
|
||||
* internal array of feature nodes for each layer node found.
|
||||
*/
|
||||
featureIdentifier: '_feature',
|
||||
|
||||
/**
|
||||
* Property: regExes
|
||||
* Compiled regular expressions for manipulating strings.
|
||||
*/
|
||||
regExes: {
|
||||
trimSpace: (/^\s*|\s*$/g),
|
||||
removeSpace: (/\s*/g),
|
||||
splitSpace: (/\s+/),
|
||||
trimComma: (/\s*,\s*/g)
|
||||
},
|
||||
|
||||
/**
|
||||
* Constructor: OpenLayers.Format.WMSGetFeatureInfo
|
||||
* Create a new parser for WMS GetFeatureInfo responses
|
||||
*
|
||||
* Parameters:
|
||||
* options - {Object} An optional object whose properties will be set on
|
||||
* this instance.
|
||||
*/
|
||||
initialize: function(options) {
|
||||
OpenLayers.Format.XML.prototype.initialize.apply(this, arguments);
|
||||
OpenLayers.Util.extend(this, options);
|
||||
this.options = options;
|
||||
},
|
||||
|
||||
/**
|
||||
* APIMethod: read
|
||||
* Read WMS GetFeatureInfo data from a string, and return an array of features
|
||||
*
|
||||
* Parameters:
|
||||
* data - {String} or {DOMElement} data to read/parse.
|
||||
*
|
||||
* Returns:
|
||||
* {Array(<OpenLayers.Feature.Vector>)} An array of features.
|
||||
*/
|
||||
read: function(data) {
|
||||
var result;
|
||||
if(typeof data == "string") {
|
||||
data = OpenLayers.Format.XML.prototype.read.apply(this, [data]);
|
||||
}
|
||||
var root = data.documentElement;
|
||||
var scope = this;
|
||||
var read = this["read_" + root.nodeName];
|
||||
if(read) {
|
||||
result = read.call(this, root);
|
||||
} else {
|
||||
// fall-back to GML since this is a common output format for WMS
|
||||
// GetFeatureInfo responses
|
||||
result = new OpenLayers.Format.GML((this.options ? this.options : {})).read(data);
|
||||
}
|
||||
return result;
|
||||
},
|
||||
|
||||
read_msGMLOutput: function(data) {
|
||||
var response = [];
|
||||
var layerNodes, n;
|
||||
layerNodes = this.getSiblingNodesByTagCriteria(data,
|
||||
this.layerIdentifier);
|
||||
if (layerNodes) {
|
||||
n = layerNodes.length;
|
||||
for (var i = 0; i < n; i++) {
|
||||
var node = layerNodes[i];
|
||||
var layerName = node.nodeName;
|
||||
if (node.prefix) {
|
||||
layerName = layerName.split(':')[1];
|
||||
}
|
||||
var layerName = layerName.replace(this.layerIdentifier, '');
|
||||
var featureNodes = this.getSiblingNodesByTagCriteria(node,
|
||||
this.featureIdentifier);
|
||||
if (featureNodes) {
|
||||
for (var j = 0; j < featureNodes.length; j++) {
|
||||
var featureNode = featureNodes[j];
|
||||
var geom = null;
|
||||
var attributes = this.parseAttributes(featureNode);
|
||||
var feature = new OpenLayers.Feature.Vector(geom,
|
||||
attributes, null);
|
||||
feature.type = layerName;
|
||||
response.push(feature);
|
||||
}
|
||||
}
|
||||
}
|
||||
return response;
|
||||
}
|
||||
},
|
||||
|
||||
read_FeatureInfoResponse: function(data) {
|
||||
var response = [];
|
||||
var featureNodes = this.getElementsByTagNameNS(data, '*',
|
||||
'FIELDS');
|
||||
|
||||
for(var i=0;i<featureNodes.length;i++) {
|
||||
var featureNode = featureNodes[i];
|
||||
var geom = null;
|
||||
|
||||
var attributes = {};
|
||||
for(var j=0; j<featureNode.attributes.length; j++) {
|
||||
var attribute = featureNode.attributes[j];
|
||||
attributes[attribute.nodeName] = attribute.nodeValue;
|
||||
}
|
||||
|
||||
response.push(new OpenLayers.Feature.Vector(
|
||||
geom, attributes, null));
|
||||
}
|
||||
return response;
|
||||
},
|
||||
|
||||
/**
|
||||
* Method: getSiblingNodesByTagCriteria
|
||||
* Recursively searches passed xml node and all it's descendant levels for
|
||||
* nodes whose tagName contains the passed search string. This returns an
|
||||
* array of all sibling nodes which match the criteria from the highest
|
||||
* hierarchial level from which a match is found.
|
||||
*
|
||||
* Parameters:
|
||||
* node - {DOMElement} An xml node
|
||||
* criteria - {String} Search string which will match some part of a tagName
|
||||
*
|
||||
* Returns:
|
||||
* Array({DOMElement)) An array of sibling xml nodes
|
||||
*/
|
||||
getSiblingNodesByTagCriteria: function(node, criteria){
|
||||
var nodes = [];
|
||||
var children, tagName, n, matchNodes, child;
|
||||
if (node && node.hasChildNodes()) {
|
||||
children = node.childNodes;
|
||||
n = children.length;
|
||||
child = children[0];
|
||||
while (child && child.nodeType != 1) {
|
||||
child = child.nextSibling;
|
||||
}
|
||||
tagName = (child ? child.nodeName : '');
|
||||
if (tagName.length > 0 && tagName.indexOf(criteria) > -1) {
|
||||
for (var i = 0; i < n; i++) {
|
||||
child = children[i];
|
||||
if (child.nodeType == 1) {
|
||||
nodes.push(child);
|
||||
}
|
||||
}
|
||||
}
|
||||
else {
|
||||
for (var i = 0; i < n; i++) {
|
||||
matchNodes = this.getSiblingNodesByTagCriteria(
|
||||
children[i], criteria);
|
||||
(nodes.length == 0) ?
|
||||
nodes = matchNodes : nodes.push(matchNodes);
|
||||
}
|
||||
}
|
||||
}
|
||||
return nodes;
|
||||
},
|
||||
|
||||
/**
|
||||
* Method: parseAttributes
|
||||
*
|
||||
* Parameters:
|
||||
* node - {<DOMElement>}
|
||||
*
|
||||
* Returns:
|
||||
* {Object} An attributes object.
|
||||
*
|
||||
* Notes:
|
||||
* Assumes that attributes are direct child xml nodes of the passed node
|
||||
* and contain only a single text node.
|
||||
*/
|
||||
parseAttributes: function(node){
|
||||
var attributes = {};
|
||||
if (node.nodeType == 1) {
|
||||
var children = node.childNodes;
|
||||
n = children.length
|
||||
for (var i = 0; i < n; ++i) {
|
||||
var child = children[i];
|
||||
if (child.nodeType == 1) {
|
||||
var grandchildren = child.childNodes;
|
||||
if (grandchildren.length == 1) {
|
||||
var grandchild = grandchildren[0];
|
||||
if (grandchild.nodeType == 3 ||
|
||||
grandchild.nodeType == 4) {
|
||||
var name = (child.prefix) ?
|
||||
child.nodeName.split(":")[1] : child.nodeName;
|
||||
var value = grandchild.nodeValue.replace(
|
||||
this.regExes.trimSpace, "");
|
||||
attributes[name] = value;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
return attributes;
|
||||
},
|
||||
|
||||
CLASS_NAME: "OpenLayers.Format.WMSGetFeatureInfo"
|
||||
|
||||
});
|
||||
Reference in New Issue
Block a user