Add support for reprojection of vector formats when loading data. This allows

for the definition of a 'projection' option on a layer. IF this projection 
object exists, it will be used to create the format's internal/external 
projection options, making it such that any data loaded will be reprojected 
to the map's projection automatically. r=pagameba (Closes #1273, #1225, #1269) 


git-svn-id: http://svn.openlayers.org/trunk/openlayers@5828 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

lib/OpenLayers/Layer/WFS.js

@@ -53,6 +53,27 @@ OpenLayers.Layer.WFS = OpenLayers.Class(
      *     sent, this should be a subclass of OpenLayers.Feature
      */
     featureClass: null,
+    
+    /**
+      * APIProperty: format
+      * {<OpenLayers.Format>} The format you want the data to be parsed with.
+      * Must be passed in the constructor. Should be a class, not an instance.
+      */
+    format: null,
+
+    /** 
+     * Property: formatObject
+     * {<OpenLayers.Format>} Internally created/managed format object, used by
+     * the Tile to parse data.
+     */
+    formatObject: null,
+
+    /**
+     * APIProperty: formatOptions
+     * {Object} Hash of options which should be passed to the format when it is
+     * created. Must be passed in the constructor.
+     */
+    formatOptions: null, 
 
     /**
      * Property: vectorMode
@@ -146,6 +167,18 @@ OpenLayers.Layer.WFS = OpenLayers.Class(
     setMap: function(map) {
         if (this.vectorMode) {
             OpenLayers.Layer.Vector.prototype.setMap.apply(this, arguments);
+            
+            var options = {
+              'extractAttributes': this.extractAttributes
+            };
+            
+            OpenLayers.Util.extend(options, this.formatOptions);
+            if (this.map && !this.projection.equals(this.map.getProjectionObject())) {
+                options.externalProjection = this.projection;
+                options.internalProjection = this.map.getProjectionObject();
+            }    
+            
+            this.formatObject = this.format ? new this.format(options) : new OpenLayers.Format.GML(options);
         } else {    
             OpenLayers.Layer.Markers.prototype.setMap.apply(this, arguments);
         }