b183aa69ba
git-svn-id: http://svn.openlayers.org/trunk/openlayers@174 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf
116 lines
3.1 KiB
JavaScript
116 lines
3.1 KiB
JavaScript
/**
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* @class
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*/
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OpenLayers.Tile.WFS = Class.create();
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OpenLayers.Tile.WFS.prototype =
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Object.extend( new OpenLayers.Tile(), {
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/** @type Array of Function */
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handlers: null,
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/** @type Array of */
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features: null,
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/**
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* @constructor
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*
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* @param {OpenLayers.Bounds} bounds
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* @param {String} url
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* @param {OpenLayers.Size} size
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*/
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initialize: function(bounds, url, size) {
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OpenLayers.Tile.prototype.initialize.apply(this, arguments);
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this.features = new Array();
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this.handlers = new Array();
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this.handlers["requestSuccess"] = this._requestSuccess;
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},
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/**
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*/
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draw:function() {
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OpenLayers.Tile.prototype.draw.apply(this, arguments);
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this.loadFeaturesForRegion("requestSuccess");
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},
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/**
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* @param OpenLayers.Pixel
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*/
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setPosition:function(pixel) {
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this.position = pixel;
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},
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/** get the full request string from the ds and the tile params
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* and call the AJAX loadURL().
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*
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* input are function pointers for what to do on success and failure.
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*
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* @param {function} success
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* @param {function} failure
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*/
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loadFeaturesForRegion:function(success, failure) {
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if (!this.loaded) {
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var server = this.ds.serverPath;
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if (server != "") {
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var queryString = this.getFullRequestString();
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// TODO: Hmmm, this stops multiple loads of the data when a
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// result isn't immediately retrieved, but it's hacky.
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// Do it better.
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this.loaded = true;
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ol.Log.info("request string: " + queryString);
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ol.Application.loadURL(queryString, null, this,
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success, failure);
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}
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}
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},
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/** Return from AJAX request
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*
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* @param {} request
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*/
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requestSuccess:function(request) {
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var doc = request.responseXML;
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if (!doc || request.fileType!="XML") {
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doc = ol.Application.parseXMLString(request.responseText);
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}
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var resultFeatures = ol.Application.getNodes(doc, "gml:featureMember");
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ol.Log.info(this.CLASS_NAME + " found " +
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resultFeatures.length + " features");
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//clear old featureList
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this.features = new Array();
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for (var i=0; i < resultFeatures.length; i++) {
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//create new Feature and add it
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var newFeature = new ol.Feature(resultFeatures[i]);
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//add new marker
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var newMarker = this._createMarker(newFeature);
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this._addMarker(newMarker);
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//save reference to the feature and marker
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this.featureList[i] = new ol.Tile.WFS.FeatureItem(
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newFeature, newMarker);
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}
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if (this.ds.markers != null) {
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this.ds.markers.redraw();
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}
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},
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/** @final @type String */
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CLASS_NAME: "OpenLayers.Tile.WFS"
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}
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);
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