fix(context-pad): reopen after Lane split

Closes #392

lib/features/context-pad/ContextPadProvider.js

@@ -112,6 +112,18 @@ ContextPadProvider.prototype.getContextPadEntries = function(element) {
     };
   }
 
+  function splitLaneHandler(count) {
+
+    return function(event, element) {
+      // actual split
+      modeling.splitLane(element, count);
+
+      // refresh context pad after split to
+      // get rid of split icons
+      contextPad.open(element, true);
+    };
+  }
+
   if (isAny(businessObject, [ 'bpmn:Lane', 'bpmn:Participant' ])) {
 
     var childLanes = getChildLanes(element);
@@ -136,9 +148,7 @@ ContextPadProvider.prototype.getContextPadEntries = function(element) {
           className: 'icon-lane-divide-two',
           title: 'Divide into two Lanes',
           action: {
-            click: function(event, element) {
+            click: splitLaneHandler(2)
-              modeling.splitLane(element, 2);
-            }
           }
         },
         'lane-divide-three': {
@@ -146,9 +156,7 @@ ContextPadProvider.prototype.getContextPadEntries = function(element) {
           className: 'icon-lane-divide-three',
           title: 'Divide into three Lanes',
           action: {
-            click: function(event, element) {
+            click: splitLaneHandler(3)
-              modeling.splitLane(element, 3);
-            }
           }
         }
       });