From 1e5f83593c272f1f5a9755351c54997ed8990a51 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=C3=89ric=20Lemoine?= <eric.lemoine@gmail.com>
Date: Sat, 31 Mar 2012 21:23:21 +0200
Subject: [PATCH] removeBackBufferDelay defaults to 0 for singleTile layers

---
 lib/OpenLayers/Layer/Grid.js | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/lib/OpenLayers/Layer/Grid.js b/lib/OpenLayers/Layer/Grid.js
index 7d9ffd0d39..fda975b16e 100644
--- a/lib/OpenLayers/Layer/Grid.js
+++ b/lib/OpenLayers/Layer/Grid.js
@@ -184,9 +184,10 @@ OpenLayers.Layer.Grid = OpenLayers.Class(OpenLayers.Layer.HTTPRequest, {
      * APIProperty: removeBackBufferDelay
      * {Number} Delay for removing the backbuffer when all tiles have finished
      *     loading. Can be set to 0 when no css opacity transitions for the
-     *     olTileImage class are used. Default is 2500.
+     *     olTileImage class are used. Default is 0 for <singleTile> layers,
+     *     2500 for tiled layers.
      */
-    removeBackBufferDelay: 2500,
+    removeBackBufferDelay: null,
 
     /**
      * Property: className
@@ -240,6 +241,10 @@ OpenLayers.Layer.Grid = OpenLayers.Class(OpenLayers.Layer.HTTPRequest, {
                                                                 arguments);
         this.grid = [];
         this.tileQueue = [];
+
+        if (this.removeBackBufferDelay === null) {
+            this.removeBackBufferDelay = this.singleTile ? 0 : 2500;
+        }
         
         if (this.className === null) {
             this.className = this.singleTile ? 'olLayerGridSingleTile' :