Umbraco support for DescendantOrSelf in Razor

gistfile1.diff

diff -Nur --exclude _ReSharper.umbraco --exclude DesignTimeResolveAssemblyReferencesInput.cache --exclude '*.user' --exclude '*.suo' --exclude '*.FileListAbsolute.txt' --exclude bin --exclude obj umbraco_92d7d98ea3fe/umbraco.MacroEngines.Juno/RazorDynamicNode/DynamicNode.cs umbraco_92d7d98ea3fe_mod/umbraco.MacroEngines.Juno/RazorDynamicNode/DynamicNode.cs
--- umbraco_92d7d98ea3fe/umbraco.MacroEngines.Juno/RazorDynamicNode/DynamicNode.cs	2011-09-21 11:05:44.000000000 +0200
+++ umbraco_92d7d98ea3fe_mod/umbraco.MacroEngines.Juno/RazorDynamicNode/DynamicNode.cs	2011-11-25 15:12:54.920000000 +0100
@@ -924,6 +924,38 @@
             }
             return new DynamicNodeList(new List<DynamicBackingItem>());
         }
+        public DynamicNode DescendantOrSelf()
+        {
+            return DescendantOrSelf(n => true);
+        }
+        public DynamicNode DescendantOrSelf(int level)
+        {
+            return DescendantOrSelf(node => node.Level == level);
+        }
+        public DynamicNode DescendantOrSelf(string nodeTypeAlias)
+        {
+            return DescendantOrSelf(node => node.NodeTypeAlias == nodeTypeAlias);
+        }
+        public DynamicNode DescendantOrSelf(Func<DynamicBackingItem, bool> func)
+        {
+            if (this.n != null)
+            {
+                var nodeQueue = new Queue<DynamicBackingItem>();
+                nodeQueue.Enqueue(n);
+                while (nodeQueue.Count > 0)
+                {
+                    var item = nodeQueue.Dequeue();
+                    if (func(item))
+                        return new DynamicNode(item);
+
+                    foreach (var child in item.ChildrenAsList)
+                    {
+                        nodeQueue.Enqueue(child);
+                    }
+                }
+            }
+            return null;
+        }
         public DynamicNodeList Ancestors(int level)
         {
             return Ancestors(n => n.Level <= level);