$invalid widget clear on switch change

2 files changed, 17 insertions, 0 deletions

diff --git a/src/services.js b/src/services.js
index e2132f1c..e91a8eca 100644
--- a/src/services.js
+++ b/src/services.js
@@ -115,5 +115,20 @@ angularService("$invalidWidgets", function(){
     });
     return count;
   };
+  invalidWidgets.clearOrphans = function() {
+    for(var i = 0; i < invalidWidgets.length;) {
+      var widget = invalidWidgets[i];
+      if (isOrphan(widget[0])) {
+        invalidWidgets.splice(i, 1);
+      } else {
+        i++;
+      }
+    }
+  };
+  function isOrphan(widget) {
+    if (widget == window.document) return false;
+    var parent = widget.parentNode;
+    return !parent || isOrphan(parent);
+  }
   return invalidWidgets;
 });
diff --git a/src/widgets.js b/src/widgets.js
index f5f02813..b281ac2e 100644
--- a/src/widgets.js
+++ b/src/widgets.js
@@ -225,6 +225,8 @@ angularWidget('NG:SWITCH', function ngSwitch(element){
           element.append(switchCase.element);
           childScope.$tryEval(switchCase.change, element);
           switchCase.template(switchCase.element, childScope);
+          if (scope.$invalidWidgets)
+            scope.$invalidWidgets.clearOrphans();
           childScope.$init();
         }
       });