Merge pull request #134 from probins/splitnoml

Removing MultiLineString dependency from the Split control.  Thanks @probins for the contribution.

lib/OpenLayers/Control/Split.js

@@ -277,8 +277,7 @@ OpenLayers.Control.Split = OpenLayers.Class(OpenLayers.Control, {
     afterFeatureModified: function(event) {
         if(event.modified) {
             var feature = event.feature;
-            if(feature.geometry instanceof OpenLayers.Geometry.LineString ||
+            if (typeof feature.geometry.split === "function") {
-               feature.geometry instanceof OpenLayers.Geometry.MultiLineString) {
                 this.feature = event.feature;
                 this.considerSplit(event.feature);
             }
@@ -313,17 +312,20 @@ OpenLayers.Control.Split = OpenLayers.Class(OpenLayers.Control, {
      * {Boolean} The target is eligible for splitting.
      */
     isEligible: function(target) {
-        return (
+        if (!target.geometry) {
-            target.state !== OpenLayers.State.DELETE
+            return false;
-        ) && (
+        } else {
-            target.geometry instanceof OpenLayers.Geometry.LineString ||
+            return (
-            target.geometry instanceof OpenLayers.Geometry.MultiLineString
+                target.state !== OpenLayers.State.DELETE
-        ) && (
+            ) && (
-            this.feature !== target
+                typeof target.geometry.split === "function"
-        ) && (
+            ) && (
-            !this.targetFilter ||
+                this.feature !== target
-            this.targetFilter.evaluate(target.attributes)
+            ) && (
-        );
+                !this.targetFilter ||
+                this.targetFilter.evaluate(target.attributes)
+            );
+        }
     },
 
     /**