1 files changed, 68 insertions, 0 deletions
diff --git a/editor/txmgr/nsTransactionItem.h b/editor/txmgr/nsTransactionItem.h
new file mode 100644
index 000000000..dc868203b
--- /dev/null
+++ b/editor/txmgr/nsTransactionItem.h
@@ -0,0 +1,68 @@
+/* -*- 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 nsTransactionItem_h__
+#define nsTransactionItem_h__
+
+#include "nsCOMPtr.h"
+#include "nsCOMArray.h"
+#include "nsCycleCollectionParticipant.h"
+#include "nsISupportsImpl.h"
+#include "nscore.h"
+
+class nsITransaction;
+class nsTransactionManager;
+class nsTransactionStack;
+
+class nsTransactionItem final
+{
+  nsCOMArray<nsISupports>  mData;
+  nsCOMPtr<nsITransaction> mTransaction;
+  nsTransactionStack      *mUndoStack;
+  nsTransactionStack      *mRedoStack;
+
+public:
+
+  explicit nsTransactionItem(nsITransaction *aTransaction);
+  NS_METHOD_(MozExternalRefCountType) AddRef();
+  NS_METHOD_(MozExternalRefCountType) Release();
+
+  NS_DECL_CYCLE_COLLECTION_NATIVE_CLASS(nsTransactionItem)
+
+  virtual nsresult AddChild(nsTransactionItem *aTransactionItem);
+  already_AddRefed<nsITransaction> GetTransaction();
+  virtual nsresult GetIsBatch(bool *aIsBatch);
+  virtual nsresult GetNumberOfChildren(int32_t *aNumChildren);
+  virtual nsresult GetChild(int32_t aIndex, nsTransactionItem **aChild);
+
+  virtual nsresult DoTransaction(void);
+  virtual nsresult UndoTransaction(nsTransactionManager *aTxMgr);
+  virtual nsresult RedoTransaction(nsTransactionManager *aTxMgr);
+
+  nsCOMArray<nsISupports>& GetData()
+  {
+    return mData;
+  }
+
+private:
+
+  virtual nsresult UndoChildren(nsTransactionManager *aTxMgr);
+  virtual nsresult RedoChildren(nsTransactionManager *aTxMgr);
+
+  virtual nsresult RecoverFromUndoError(nsTransactionManager *aTxMgr);
+  virtual nsresult RecoverFromRedoError(nsTransactionManager *aTxMgr);
+
+  virtual nsresult GetNumberOfUndoItems(int32_t *aNumItems);
+  virtual nsresult GetNumberOfRedoItems(int32_t *aNumItems);
+
+  void CleanUp();
+protected:
+  virtual ~nsTransactionItem();
+
+  nsCycleCollectingAutoRefCnt mRefCnt;
+  NS_DECL_OWNINGTHREAD
+};
+
+#endif // nsTransactionItem_h__