1 files changed, 44 insertions, 0 deletions
diff --git a/editor/libeditor/EditTransactionBase.h b/editor/libeditor/EditTransactionBase.h
new file mode 100644
index 0000000000..f09449f073
--- /dev/null
+++ b/editor/libeditor/EditTransactionBase.h
@@ -0,0 +1,44 @@
+/* -*- 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 mozilla_EditTransactionBase_h
+#define mozilla_EditTransactionBase_h
+
+#include "nsCycleCollectionParticipant.h"
+#include "nsISupportsImpl.h"
+#include "nsITransaction.h"
+#include "nsPIEditorTransaction.h"
+#include "nscore.h"
+
+namespace mozilla {
+
+/**
+ * Base class for all document editing transactions.
+ */
+class EditTransactionBase : public nsITransaction
+                          , public nsPIEditorTransaction
+{
+public:
+  NS_DECL_CYCLE_COLLECTING_ISUPPORTS
+  NS_DECL_CYCLE_COLLECTION_CLASS_AMBIGUOUS(EditTransactionBase, nsITransaction)
+
+  virtual void LastRelease() {}
+
+  NS_IMETHOD RedoTransaction(void) override;
+  NS_IMETHOD GetIsTransient(bool* aIsTransient) override;
+  NS_IMETHOD Merge(nsITransaction* aTransaction, bool* aDidMerge) override;
+
+protected:
+  virtual ~EditTransactionBase();
+};
+
+} // namespace mozilla
+
+#define NS_DECL_EDITTRANSACTIONBASE \
+  NS_IMETHOD DoTransaction() override; \
+  NS_IMETHOD UndoTransaction() override; \
+  NS_IMETHOD GetTxnDescription(nsAString& aTransactionDescription) override;
+
+#endif // #ifndef mozilla_EditTransactionBase_h