created WFS tile class based on Image tile

git-svn-id: http://svn.openlayers.org/trunk/openlayers@166 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

lib/OpenLayers/Tile/WFS.js

@@ -0,0 +1,42 @@
+/**
+* @class
+*/
+OpenLayers.Tile.WFS = Class.create();
+OpenLayers.Tile.WFS.prototype = 
+  Object.extend( new OpenLayers.Tile(), {
+
+    /** 
+    * @constructor
+    *
+    * @param {OpenLayers.Bounds} bounds
+    * @param {String} url
+    * @param {OpenLayers.Size} size
+    */
+    initialize: function(bounds, url, size) {
+        OpenLayers.Tile.prototype.initialize.apply(this, arguments);
+    },
+
+    /**
+    */
+    draw:function() {
+        OpenLayers.Tile.prototype.draw.apply(this, arguments);
+    },
+
+    /**
+     * @param OpenLayers.Pixel
+     */
+    setPosition:function(pixel) {
+        this.position = pixel;
+    },
+
+    /**
+    * @type OpenLayers.Pixel
+    */
+    getPosition: function() {
+        return this.position;
+    },
+    
+    /** @final @type String */
+    CLASS_NAME: "OpenLayers.Tile.WFS"
+  }
+);