1 files changed, 46 insertions, 0 deletions
diff --git a/editor/libeditor/DeleteContentTransactionBase.h b/editor/libeditor/DeleteContentTransactionBase.h
new file mode 100644
index 0000000000..484c80a7ac
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+++ b/editor/libeditor/DeleteContentTransactionBase.h
@@ -0,0 +1,46 @@
+/* -*- 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 DeleteContentTransactionBase_h
+#define DeleteContentTransactionBase_h
+
+#include "EditTransactionBase.h"
+
+#include "EditorForwards.h"
+
+#include "mozilla/RefPtr.h"
+
+#include "nsCycleCollectionParticipant.h"
+#include "nsISupportsImpl.h"
+
+namespace mozilla {
+
+/**
+ * An abstract transaction that removes text or node.
+ */
+class DeleteContentTransactionBase : public EditTransactionBase {
+ public:
+  /**
+   * Return a point to put caret if the transaction instance has an idea.
+   */
+  virtual EditorDOMPoint SuggestPointToPutCaret() const = 0;
+
+  NS_DECL_ISUPPORTS_INHERITED
+  NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(DeleteContentTransactionBase,
+                                           EditTransactionBase)
+
+  NS_DECL_EDITTRANSACTIONBASE_GETASMETHODS_OVERRIDE(
+      DeleteContentTransactionBase)
+
+ protected:
+  explicit DeleteContentTransactionBase(EditorBase& aEditorBase);
+  ~DeleteContentTransactionBase() = default;
+
+  RefPtr<EditorBase> mEditorBase;
+};
+
+}  // namespace mozilla
+
+#endif  // #ifndef DeleteContentTransactionBase_h