--- a/labs/openlayers/lib/OpenLayers/Format/WMSDescribeLayer.js +++ b/labs/openlayers/lib/OpenLayers/Format/WMSDescribeLayer.js @@ -1,1 +1,92 @@ +/* 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/Format/XML.js + */ + +/** + * Class: OpenLayers.Format.WMSDescribeLayer + * Read SLD WMS DescribeLayer response + * DescribeLayer is meant to couple WMS to WFS and WCS + * + * Inherits from: + * - + */ +OpenLayers.Format.WMSDescribeLayer = OpenLayers.Class(OpenLayers.Format.XML, { + + /** + * APIProperty: defaultVersion + * {String} Version number to assume if none found. Default is "1.1.1". + */ + defaultVersion: "1.1.1", + + /** + * APIProperty: version + * {String} Specify a version string if one is known. + */ + version: null, + + /** + * Constructor: OpenLayers.Format.WMSDescribeLayer + * Create a new parser for WMS DescribeLayer 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, [options]); + this.options = options; + }, + + /** + * APIMethod: read + * Read DescribeLayer data from a string, and return the response. + * The OGC currently defines 2 formats which are allowed for output, + * so we need to parse these 2 types + * + * Parameters: + * data - {String} or {DOMElement} data to read/parse. + * + * Returns: + * {Array} Array of {} objects which have: + * - {String} owsType: WFS/WCS + * - {String} owsURL: the online resource + * - {String} typeName: the name of the typename on the service + */ + read: function(data) { + if(typeof data == "string") { + data = OpenLayers.Format.XML.prototype.read.apply(this, [data]); + } + var root = data.documentElement; + var version = this.version; + if(!version) { + version = root.getAttribute("version"); + if(!version) { + version = this.defaultVersion; + } + } + // these are identical to us, but some WMS use 1.1.1 and some use 1.1.0 + if (version == "1.1.1" || version == "1.1.0") { + version = "1.1"; + } + var constructor = OpenLayers.Format.WMSDescribeLayer[ + "v" + version.replace(/\./g, "_") + ]; + if(!constructor) { + throw "Can't find a WMS DescribeLayer parser for version " + + version; + } + var parser = new constructor(this.options); + var describelayer = parser.read(data); + describelayer.version = version; + return describelayer; + }, + + CLASS_NAME: "OpenLayers.Format.WMSDescribeLayer" + +}); +