Fix map in IE by deferring Vector layer addition to page load (note that deferred...

I've trimmed down the unrequired options on the layer, they're defaulted from the map.
Thanks firefishy for the report.

diff --git a/app/views/site/index.rhtml b/app/views/site/index.rhtml
index 66f69960b496540e561f8bf50881dfe0f3210243..54f28172739f2521a33a6dfd4bddc098eb3b4230 100644 (file)
--- a/app/views/site/index.rhtml
+++ b/app/views/site/index.rhtml
@@ -111,7 +111,8 @@ end
 
     setMapExtent(bbox);
     <%    if box %>
-    box = addBoxToMap(bbox);
+    // IE requires Vector layers be initialised on page load, and not under deferred script conditions
+    Event.observe(window, 'load', function() {addBoxToMap(bbox)});
     <%    end %>
     <% else %>
     var centre = new OpenLayers.LonLat(<%= lon %>, <%= lat %>);

diff --git a/public/javascripts/map.js b/public/javascripts/map.js
index 746dd5bafc51987092dabd005f01184417cb8f8b..6e012b3d30f4cd0128d58654e63d20b1a02813be 100644 (file)
--- a/public/javascripts/map.js
+++ b/public/javascripts/map.js
@@ -75,16 +75,6 @@ function createMap(divName, options) {
 
    var numZoomLevels = Math.max(mapnik.numZoomLevels, osmarender.numZoomLevels);
 
-   vectors = new OpenLayers.Layer.Vector("Vectors", {
-      displayInLayerSwitcher: false,
-      numZoomLevels: numZoomLevels,
-      maxExtent: new OpenLayers.Bounds(-20037508,-20037508,20037508,20037508),
-      maxResolution: 156543,
-      units: "m",
-      projection: "EPSG:900913"
-   });
-   map.addLayer(vectors);
-
    markers = new OpenLayers.Layer.Markers("Markers", {
       displayInLayerSwitcher: false,
       numZoomLevels: numZoomLevels,
@@ -119,6 +109,13 @@ function addMarkerToMap(position, icon, description) {
 }
 
 function addBoxToMap(boxbounds) {
+   if(!vectors) {
+     // Be aware that IE requires Vector layers be initialised on page load, and not under deferred script conditions
+     vectors = new OpenLayers.Layer.Vector("Box Layer", {
+        displayInLayerSwitcher: false
+     });
+     map.addLayer(vectors);
+   }
    var geometry = boxbounds.toGeometry().transform(epsg4326, map.getProjectionObject());
    var box = new OpenLayers.Feature.Vector(geometry, {}, {
       strokeWidth: 2,