From 36ec579e39fb69907cc7cb9850c2f105305b3c59 Mon Sep 17 00:00:00 2001
From: euzuro <euzuro@metacarta.com>
Date: Thu, 17 Aug 2006 17:20:30 +0000
Subject: [PATCH] protect viewport-lonlat translation functions in the case no
 baselayer is defined

git-svn-id: http://svn.openlayers.org/branches/openlayers/2.0@1283 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf
---
 lib/OpenLayers/Map.js | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/lib/OpenLayers/Map.js b/lib/OpenLayers/Map.js
index 52a2ab4e3a..8e7606c086 100644
--- a/lib/OpenLayers/Map.js
+++ b/lib/OpenLayers/Map.js
@@ -931,7 +931,11 @@ OpenLayers.Map.prototype = {
     * @private
     */
     getLonLatFromViewPortPx: function (viewPortPx) {
-        return this.baseLayer.getLonLatFromViewPortPx(viewPortPx);
+        var lonlat = null; 
+        if (this.baseLayer != null) {
+            lonlat = this.baseLayer.getLonLatFromViewPortPx(viewPortPx);
+        }
+        return lonlat;
     },
 
     /**
@@ -944,7 +948,11 @@ OpenLayers.Map.prototype = {
     * @private
     */
     getViewPortPxFromLonLat: function (lonlat) {
-        return this.baseLayer.getViewPortPxFromLonLat(lonlat);
+        var px = null; 
+        if (this.baseLayer != null) {
+            px = this.baseLayer.getViewPortPxFromLonLat(lonlat);
+        }
+        return px;
     },