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