Add dactylIUtils.createContents. Closes issue #581.

binary/src/dactylIUtils.idl

@@ -1,6 +1,7 @@
 /* Public Domain */
 
 #include "nsISupports.idl"
+#include "nsIDOMElement.idl"
 
 %{C++
 #include "jsapi.h"
@@ -19,6 +20,8 @@ interface dactylIUtils : nsISupports
                         [optional] in ACString filename,
                         [optional] in PRInt32 lineNumber);
 
+    void createContents(in nsIDOMElement element);
+
     [implicit_jscontext]
     jsval getGlobalForObject(in jsval object);
 

binary/src/dactylUtils.cpp

@@ -40,6 +40,9 @@
 #include "jsdbgapi.h"
 #include "jsobj.h"
 
+#include "nsIContent.h"
+#include "nsIDOMXULElement.h"
+#include "nsIXULTemplateBuilder.h"
 #include "nsIObserverService.h"
 #include "nsIScriptSecurityManager.h"
 #include "nsIXPCScriptable.h"
@@ -271,6 +274,28 @@ dactylUtils::EvalInContext(const nsAString &aSource,
     return rv;
 }
 
+NS_IMETHODIMP
+dactylUtils::CreateContents(nsIDOMElement *aElement)
+{
+    nsCOMPtr<nsIContent> content = do_QueryInterface(aElement);
+
+    for (nsIContent *element = content;
+         element;
+         element = element->GetParent()) {
+
+        nsCOMPtr<nsIDOMXULElement> xulelem = do_QueryInterface(element);
+        if (xulelem) {
+            nsCOMPtr<nsIXULTemplateBuilder> builder;
+            xulelem->GetBuilder(getter_AddRefs(builder));
+            if (builder) {
+                builder->CreateContents(content, PR_TRUE);
+                break;
+            }
+        }
+    }
+    return NS_OK;
+}
+
 NS_IMETHODIMP
 dactylUtils::GetGlobalForObject(const jsval &aObject,
                                 JSContext *cx,