Fix for "WFS.setOpacity() doen't work properly". (Closes #1868) r=elemoine

git-svn-id: http://svn.openlayers.org/trunk/openlayers@8952 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

lib/OpenLayers/Layer/WFS.js

@@ -552,5 +552,21 @@ OpenLayers.Layer.WFS = OpenLayers.Class(
         return extent;
     },
     
+    /** 
+     * APIMethod: setOpacity 
+     * Call the setOpacity method of the appropriate parent class to set the
+     *     opacity.  
+     * 
+     * Parameter: 
+     * opacity - {Float} 
+     */
+    setOpacity: function (opacity) {
+        if (this.vectorMode) {
+            OpenLayers.Layer.Vector.prototype.setOpacity.apply(this, [opacity]);
+        } else {
+            OpenLayers.Layer.Markers.prototype.setOpacity.apply(this, [opacity]);
+        }    
+    },
+
     CLASS_NAME: "OpenLayers.Layer.WFS"
 });

tests/Layer/WFS.html

@@ -25,6 +25,22 @@
 
     }
     
+    function test_Layer_WFS_setOpacity(t) {
+        t.plan(3);
+
+        var layer = new OpenLayers.Layer.WFS(name, "url", {});
+        layer.setOpacity(.5);
+        t.eq(layer.opacity, 0.5, "vector setOpacity didn't fail");
+        var layer = new OpenLayers.Layer.WFS(name, "url", {}, {'featureClass': OpenLayers.Feature.WFS});
+        var marker = new OpenLayers.Marker(new OpenLayers.LonLat(0,0));
+        marker.setOpacity = function() {
+            t.ok(true, "Marker setOpacity was called");
+        }    
+        layer.addMarker(marker);
+        layer.setOpacity(.6);
+        t.eq(layer.opacity, 0.6, "setOpacity didn't fail on markers");
+    }
+    
     function test_Layer_WFS_destroy(t) {
         t.plan(13);