From de4b995616d3f86bb277862c8d0d849aee047da8 Mon Sep 17 00:00:00 2001
From: Bart van den Eijnden <bartvde@opengeo.org>
Date: Fri, 4 Jan 2013 17:05:03 +0100
Subject: [PATCH] incorporate @ahocevar's review

---
 lib/OpenLayers/Layer/Grid.js | 15 ++++++---------
 1 file changed, 6 insertions(+), 9 deletions(-)

diff --git a/lib/OpenLayers/Layer/Grid.js b/lib/OpenLayers/Layer/Grid.js
index d7b6adb2c1..5bd1e3be96 100644
--- a/lib/OpenLayers/Layer/Grid.js
+++ b/lib/OpenLayers/Layer/Grid.js
@@ -414,17 +414,14 @@ OpenLayers.Layer.Grid = OpenLayers.Class(OpenLayers.Layer.HTTPRequest, {
     *     changebaselayer event will be triggered.
     */
     addOptions: function (newOptions, reinitialize) {
+        var singleTileChanged = newOptions.singleTile !== undefined && 
+            newOptions.singleTile !== this.singleTile;
         OpenLayers.Layer.HTTPRequest.prototype.addOptions.apply(this, arguments);
-        if (this.map && newOptions.singleTile !== undefined) {
-            this.initProperties();
-            this.clearGrid();
-            if (newOptions.singleTile === true) {
+        if (this.map && singleTileChanged) {
+                this.initProperties();
+                this.tileSize = this.options.tileSize;
                 this.setTileSize();
-                this.initSingleTile(this.map.getExtent());
-            } else {
-                this.tileSize = this.options.tileSize || this.map.getTileSize();
-                this.initGriddedTiles(this.map.getExtent());
-            }
+                this.moveTo(null, true);
         }
     },