1 files changed, 83 insertions, 0 deletions
diff --git a/editor/txmgr/nsTransactionManager.h b/editor/txmgr/nsTransactionManager.h
new file mode 100644
index 000000000..17d21819f
--- /dev/null
+++ b/editor/txmgr/nsTransactionManager.h
@@ -0,0 +1,83 @@
+/* -*- 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 nsTransactionManager_h__
+#define nsTransactionManager_h__
+
+#include "nsCOMArray.h"
+#include "nsCOMPtr.h"
+#include "nsCycleCollectionParticipant.h"
+#include "nsTransactionStack.h"
+#include "nsISupportsImpl.h"
+#include "nsITransactionManager.h"
+#include "nsTransactionStack.h"
+#include "nsWeakReference.h"
+#include "nscore.h"
+
+class nsITransaction;
+class nsITransactionListener;
+
+/** implementation of a transaction manager object.
+ *
+ */
+class nsTransactionManager final : public nsITransactionManager
+                                 , public nsSupportsWeakReference
+{
+private:
+
+  int32_t                mMaxTransactionCount;
+  nsTransactionStack     mDoStack;
+  nsTransactionStack     mUndoStack;
+  nsTransactionStack     mRedoStack;
+  nsCOMArray<nsITransactionListener> mListeners;
+
+  /** The default destructor.
+   */
+  virtual ~nsTransactionManager();
+
+public:
+
+  /** The default constructor.
+   */
+  explicit nsTransactionManager(int32_t aMaxTransactionCount=-1);
+
+  /* Macro for AddRef(), Release(), and QueryInterface() */
+  NS_DECL_CYCLE_COLLECTING_ISUPPORTS
+  NS_DECL_CYCLE_COLLECTION_CLASS_AMBIGUOUS(nsTransactionManager,
+                                           nsITransactionManager)
+
+  /* nsITransactionManager method implementations. */
+  NS_DECL_NSITRANSACTIONMANAGER
+
+  already_AddRefed<nsITransaction> PeekUndoStack();
+  already_AddRefed<nsITransaction> PeekRedoStack();
+
+  virtual nsresult WillDoNotify(nsITransaction *aTransaction, bool *aInterrupt);
+  virtual nsresult DidDoNotify(nsITransaction *aTransaction, nsresult aExecuteResult);
+  virtual nsresult WillUndoNotify(nsITransaction *aTransaction, bool *aInterrupt);
+  virtual nsresult DidUndoNotify(nsITransaction *aTransaction, nsresult aUndoResult);
+  virtual nsresult WillRedoNotify(nsITransaction *aTransaction, bool *aInterrupt);
+  virtual nsresult DidRedoNotify(nsITransaction *aTransaction, nsresult aRedoResult);
+  virtual nsresult WillBeginBatchNotify(bool *aInterrupt);
+  virtual nsresult DidBeginBatchNotify(nsresult aResult);
+  virtual nsresult WillEndBatchNotify(bool *aInterrupt);
+  virtual nsresult DidEndBatchNotify(nsresult aResult);
+  virtual nsresult WillMergeNotify(nsITransaction *aTop,
+                                   nsITransaction *aTransaction,
+                                   bool *aInterrupt);
+  virtual nsresult DidMergeNotify(nsITransaction *aTop,
+                                  nsITransaction *aTransaction,
+                                  bool aDidMerge,
+                                  nsresult aMergeResult);
+
+private:
+
+  /* nsTransactionManager specific private methods. */
+  virtual nsresult BeginTransaction(nsITransaction *aTransaction,
+                                    nsISupports *aData);
+  virtual nsresult EndTransaction(bool aAllowEmpty);
+};
+
+#endif // nsTransactionManager_h__