--- a/labs/openlayers/lib/OpenLayers/Feature/WFS.js +++ b/labs/openlayers/lib/OpenLayers/Feature/WFS.js @@ -1,1 +1,81 @@ +/* Copyright (c) 2006-2010 by OpenLayers Contributors (see authors.txt for + * full list of contributors). Published under the Clear BSD license. + * See http://svn.openlayers.org/trunk/openlayers/license.txt for the + * full text of the license. */ +/** + * @requires OpenLayers/Feature.js + */ + +/** + * Class: OpenLayers.Feature.WFS + * WFS handling class, for use as a featureClass on the WFS layer for handling + * 'point' WFS types. Good for subclassing when creating a custom WFS like + * XML application. + * + * Inherits from: + * - + */ +OpenLayers.Feature.WFS = OpenLayers.Class(OpenLayers.Feature, { + + /** + * Constructor: OpenLayers.Feature.WFS + * Create a WFS feature. + * + * Parameters: + * layer - {} + * xmlNode - {XMLNode} + */ + initialize: function(layer, xmlNode) { + var newArguments = arguments; + var data = this.processXMLNode(xmlNode); + newArguments = new Array(layer, data.lonlat, data); + OpenLayers.Feature.prototype.initialize.apply(this, newArguments); + this.createMarker(); + this.layer.addMarker(this.marker); + }, + + /** + * Method: destroy + * nullify references to prevent circular references and memory leaks + */ + destroy: function() { + if (this.marker != null) { + this.layer.removeMarker(this.marker); + } + OpenLayers.Feature.prototype.destroy.apply(this, arguments); + }, + + /** + * Method: processXMLNode + * When passed an xmlNode, parses it for a GML point, and passes + * back an object describing that point. + * + * For subclasses of Feature.WFS, this is the feature to change. + * + * Parameters: + * xmlNode - {XMLNode} + * + * Returns: + * {Object} Data Object with 'id', 'lonlat', and private properties set + */ + processXMLNode: function(xmlNode) { + //this should be overridden by subclasses + // must return an Object with 'id' and 'lonlat' values set + var point = OpenLayers.Ajax.getElementsByTagNameNS(xmlNode, "http://www.opengis.net/gml", "gml", "Point"); + var text = OpenLayers.Util.getXmlNodeValue(OpenLayers.Ajax.getElementsByTagNameNS(point[0], "http://www.opengis.net/gml","gml", "coordinates")[0]); + var floats = text.split(","); + return {lonlat: new OpenLayers.LonLat(parseFloat(floats[0]), + parseFloat(floats[1])), + id: null}; + + }, + + CLASS_NAME: "OpenLayers.Feature.WFS" +}); + + + + + +