If Google fails to load before OpenLayers, occasionally dragging is not

possible with Google, because GMap2 would be undefined when the Google
class is included. So, we put this in a wrapper function, and call it
when you init the layer instead.


git-svn-id: http://svn.openlayers.org/branches/openlayers/2.0@1321 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

lib/OpenLayers/Layer/Google.js

@@ -2,31 +2,8 @@
  * See http://svn.openlayers.org/trunk/openlayers/license.txt for the full
  * text of the license. */
 
-if (typeof GMap2 != "undefined") {
+
-    
+
-    /** Hack-on function because GMAPS does not give it to us
-     * 
-     * @param {GLatLng} gLatLng 
-     *
-     * @returns A GPoint specifying gLatLng translated into "Container" coords
-     * @type GPoint
-     */
-    GMap2.prototype.fromLatLngToContainerPixel = function(gLatLng) {
-    
-        // first we translate into "DivPixel"
-        var gPoint = this.fromLatLngToDivPixel(gLatLng);
-    
-        // locate the sliding "Div" div
-        //  it seems like "b" is the main div
-        var div = this.b.firstChild.firstChild;
-    
-        // adjust by the offset of "Div" and voila!
-        gPoint.x += div.offsetLeft;
-        gPoint.y += div.offsetTop;
-    
-        return gPoint;
-    };
-}
 
 /**
  * @class
@@ -65,7 +42,7 @@ OpenLayers.Layer.Google.prototype =
         if (this.maxExtent == null) {
             this.maxExtent = new OpenLayers.Bounds(-180, -90, 180, 90);
         }
-        
+        this.addContainerPxFunction();      
         this.numZoomLevels = this.maxZoomLevel - this.minZoomLevel + 1;
     },
     
@@ -431,8 +408,34 @@ OpenLayers.Layer.Google.prototype =
         }
         return gLatLngBounds;
     },
-
+    
-
+    addContainerPxFunction: function() {
+      if (typeof GMap2 != "undefined" && !GMap2.fromLatLngToContainerPixel) {
+          
+          /** Hack-on function because GMAPS does not give it to us
+           * 
+           * @param {GLatLng} gLatLng 
+           *
+           * @returns A GPoint specifying gLatLng translated into "Container" coords
+           * @type GPoint
+           */
+          GMap2.prototype.fromLatLngToContainerPixel = function(gLatLng) {
+          
+              // first we translate into "DivPixel"
+              var gPoint = this.fromLatLngToDivPixel(gLatLng);
+          
+              // locate the sliding "Div" div
+              //  it seems like "b" is the main div
+              var div = this.b.firstChild.firstChild;
+          
+              // adjust by the offset of "Div" and voila!
+              gPoint.x += div.offsetLeft;
+              gPoint.y += div.offsetTop;
+          
+              return gPoint;
+          };
+      }
+    },
     /** @final @type String */
     CLASS_NAME: "OpenLayers.Layer.Google"
 });