diff -r 000000000000 -r 6474c204b198 editor/libeditor/base/InsertElementTxn.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/editor/libeditor/base/InsertElementTxn.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,56 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef InsertElementTxn_h__
+#define InsertElementTxn_h__
+
+#include "EditTxn.h"                    // for EditTxn, NS_DECL_EDITTXN
+#include "nsCOMPtr.h"                   // for nsCOMPtr
+#include "nsCycleCollectionParticipant.h"
+#include "nsIDOMNode.h"                 // for nsIDOMNode
+#include "nsISupportsImpl.h"            // for NS_DECL_ISUPPORTS_INHERITED
+#include "nscore.h"                     // for NS_IMETHOD
+
+class nsIEditor;
+
+/**
+ * A transaction that inserts a single element
+ */
+class InsertElementTxn : public EditTxn
+{
+public:
+  /** initialize the transaction.
+    * @param aNode   the node to insert
+    * @param aParent the node to insert into
+    * @param aOffset the offset in aParent to insert aNode
+    */
+  NS_IMETHOD Init(nsIDOMNode *aNode,
+                  nsIDOMNode *aParent,
+                  int32_t     aOffset,
+                  nsIEditor  *aEditor);
+
+  InsertElementTxn();
+
+  NS_DECL_ISUPPORTS_INHERITED
+  NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(InsertElementTxn, EditTxn)
+
+  NS_DECL_EDITTXN
+
+protected:
+  
+  /** the element to insert */
+  nsCOMPtr<nsIDOMNode> mNode;
+
+  /** the node into which the new node will be inserted */
+  nsCOMPtr<nsIDOMNode> mParent;
+
+  /** the editor for this transaction */
+  nsIEditor*           mEditor;
+
+  /** the index in mParent for the new node */
+  int32_t mOffset;
+};
+
+#endif