update WFS to new clone()

git-svn-id: http://svn.openlayers.org/trunk/openlayers@957 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

lib/OpenLayers/Layer/WFS.js

@@ -83,22 +83,28 @@ OpenLayers.Layer.WFS.prototype =
     },
     
     /**
-    * @param {String} name
-    * @param {hash} params
-    *
-    * @returns A clone of this OpenLayers.Layer.WMS, with the passed-in
-    *          parameters merged in.
-    * @type OpenLayers.Layer.WMS
-    */
-    clone: function (name, params) {
-        var mergedParams = {}
-        Object.extend(mergedParams, this.params);
-        Object.extend(mergedParams, params);
-        var obj = new OpenLayers.Layer.WFS(name, this.url, mergedParams);
-        if (this.tileSize)
-            obj.setTileSize(this.tileSize);
+     * @param {Object} obj
+     * 
+     * @returns An exact clone of this OpenLayers.Layer.WMS
+     * @type OpenLayers.Layer.WMS
+     */
+    clone: function (obj) {
+        
+        if (obj == null) {
+            obj = new OpenLayers.Layer.WFS(this.name,
+                                           this.url,
+                                           this.params,
+                                           this.options);
+        }
+
+        //get all additions from superclasses
+        obj = OpenLayers.Layer.Grid.prototype.clone.apply(this, [obj]);
+
+        // copy/set any non-init, non-simple values here
+
         return obj;
-    },
+    },    
+
 
     /**
     * addTile creates a tile, initializes it (via 'draw' in this case), and