trigger an event when the layer's opacity change. r=elemoine (closes #2112)

git-svn-id: http://svn.openlayers.org/trunk/openlayers@9616 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf
2009-08-10 06:10:29 +00:00
parent c1a0d405e4
commit 2b9bd25530
3 changed files with 41 additions and 6 deletions
--- a/lib/OpenLayers/Layer.js
+++ b/lib/OpenLayers/Layer.js
@@ -1109,6 +1109,12 @@ OpenLayers.Layer = OpenLayers.Class({
                OpenLayers.Util.modifyDOMElement(element, null, null, null, 
                                                 null, null, null, opacity);
            }
+            if (this.map != null) {
+                this.map.events.triggerEvent("changelayer", {
+                    layer: this,
+                    property: "opacity"
+                });
+            }
        }
    },