create an option to cancel adding a layer, r=tschaub (closes #2121)

git-svn-id: http://svn.openlayers.org/trunk/openlayers@9802 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf
2009-11-17 07:34:51 +00:00
parent f57e19ae2d
commit 081ce883fb
2 changed files with 17 additions and 2 deletions
--- a/lib/OpenLayers/Map.js
+++ b/lib/OpenLayers/Map.js
@@ -906,7 +906,9 @@ OpenLayers.Map = OpenLayers.Class({
            layer.isBaseLayer = false;
        }

-        this.events.triggerEvent("preaddlayer", {layer: layer});
+        if (this.events.triggerEvent("preaddlayer", {layer: layer}) === false) {
+            return;
+        }
        
        layer.div.className = "olLayerDiv";
        layer.div.style.overflow = "";