diff -r 000000000000 -r 6474c204b198 editor/libeditor/base/DeleteRangeTxn.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/editor/libeditor/base/DeleteRangeTxn.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,75 @@
+/* -*- 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 DeleteRangeTxn_h__
+#define DeleteRangeTxn_h__
+
+#include "EditAggregateTxn.h"
+#include "EditTxn.h"
+#include "nsAutoPtr.h"
+#include "nsCycleCollectionParticipant.h"
+#include "nsID.h"
+#include "nsIEditor.h"
+#include "nsISupportsImpl.h"
+#include "nsRange.h"
+#include "nscore.h"
+
+class nsEditor;
+class nsINode;
+class nsRangeUpdater;
+
+/**
+ * A transaction that deletes an entire range in the content tree
+ */
+class DeleteRangeTxn : public EditAggregateTxn
+{
+public:
+  /** initialize the transaction.
+    * @param aEditor the object providing basic editing operations
+    * @param aRange  the range to delete
+    */
+  nsresult Init(nsEditor* aEditor,
+                nsRange* aRange,
+                nsRangeUpdater* aRangeUpdater);
+
+  DeleteRangeTxn();
+
+  NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(DeleteRangeTxn, EditAggregateTxn)
+  NS_IMETHOD QueryInterface(REFNSIID aIID, void** aInstancePtr);
+
+  NS_DECL_EDITTXN
+
+  NS_IMETHOD RedoTransaction();
+
+  virtual void LastRelease()
+  {
+    mRange = nullptr;
+    EditAggregateTxn::LastRelease();
+  }
+protected:
+
+  nsresult CreateTxnsToDeleteBetween(nsINode* aNode,
+                                     int32_t aStartOffset,
+                                     int32_t aEndOffset);
+
+  nsresult CreateTxnsToDeleteNodesBetween();
+
+  nsresult CreateTxnsToDeleteContent(nsINode* aParent,
+                                     int32_t aOffset,
+                                     nsIEditor::EDirection aAction);
+
+protected:
+
+  /** p1 in the range */
+  nsRefPtr<nsRange> mRange;
+
+  /** the editor for this transaction */
+  nsEditor* mEditor;
+
+  /** range updater object */
+  nsRangeUpdater* mRangeUpdater;
+};
+
+#endif