[XForms] Submission is leaving off document level pi and comments. Bug 344621,...

  }

  // recursively walk the source document, copying nodes as appropriate

  nsCOMPtr<nsIDOMNode> startNode;

  nsCOMPtr<nsIModelElementPrivate> model = GetModel();

  NS_ENSURE_STATE(model);

  nsresult rv = NS_OK;

  // if it is a document, get the root element

  if (sourceDoc) {

    nsCOMPtr<nsIDOMElement> elm;

    sourceDoc->GetDocumentElement(getter_AddRefs(elm));

    startNode = elm;

    // Iterate over document child nodes to preserve document level

    // processing instructions and comment nodes.

    nsCOMPtr<nsIDOMNode> curDocNode, node, destChild;

    sourceDoc->GetFirstChild(getter_AddRefs(curDocNode));

    PRUint16 type;

    while (curDocNode) {

      curDocNode->GetNodeType(&type);

      if (type == nsIDOMNode::ELEMENT_NODE) {

        rv = CopyChildren(model, curDocNode, doc, doc, cdataElements, 0);

        NS_ENSURE_SUCCESS(rv, rv);

      } else {

    startNode = source;

        doc->ImportNode(curDocNode, PR_FALSE, getter_AddRefs(destChild));

        doc->AppendChild(destChild, getter_AddRefs(node));

      }

  nsCOMPtr<nsIModelElementPrivate> model = GetModel();

  NS_ENSURE_STATE(model);

  nsresult rv = CopyChildren(model, startNode, doc, doc, cdataElements, 0);

      curDocNode->GetNextSibling(getter_AddRefs(node));

      curDocNode.swap(node);

    }

  } else {

    rv = CopyChildren(model, source, doc, doc, cdataElements, 0);

    NS_ENSURE_SUCCESS(rv, rv);

  }

  NS_ADDREF(*result = doc);

  return NS_OK;