Added WMSDescribeLayer format. Thanks bartvde and sbenthall for the patch. I made some minor modifications:

* changed file structure to match other formats (i.e. put version 1.1 parser in a WMSDescribeLayer subfolder) * fixed a type in the example which showed owsURL instead of owsType r=me (closes #1201) git-svn-id: http://svn.openlayers.org/trunk/openlayers@9146 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf
2009-03-31 15:06:02 +00:00
parent cf5aa98cce
commit 61b5293692
7 changed files with 275 additions and 0 deletions
@@ -0,0 +1,90 @@
+/* Copyright (c) 2006-2008 MetaCarta, Inc., 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.XML>
+ */
+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 {<LayerDescription>} 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" 
+
+});