1 files changed, 80 insertions, 0 deletions
diff --git a/editor/libeditor/CreateElementTransaction.h b/editor/libeditor/CreateElementTransaction.h
new file mode 100644
index 0000000000..70fecceaef
--- /dev/null
+++ b/editor/libeditor/CreateElementTransaction.h
@@ -0,0 +1,80 @@
+/* -*- 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 CreateElementTransaction_h
+#define CreateElementTransaction_h
+
+#include "mozilla/EditTransactionBase.h"
+#include "nsCOMPtr.h"
+#include "nsCycleCollectionParticipant.h"
+#include "nsISupportsImpl.h"
+
+class nsIAtom;
+class nsIContent;
+class nsINode;
+
+/**
+ * A transaction that creates a new node in the content tree.
+ */
+namespace mozilla {
+
+class EditorBase;
+namespace dom {
+class Element;
+} // namespace dom
+
+class CreateElementTransaction final : public EditTransactionBase
+{
+public:
+  /**
+   * Initialize the transaction.
+   * @param aEditorBase     The provider of basic editing functionality.
+   * @param aTag            The tag (P, HR, TABLE, etc.) for the new element.
+   * @param aParent         The node into which the new element will be
+   *                        inserted.
+   * @param aOffsetInParent The location in aParent to insert the new element.
+   *                        If eAppend, the new element is appended as the last
+   *                        child.
+   */
+  CreateElementTransaction(EditorBase& aEditorBase,
+                           nsIAtom& aTag,
+                           nsINode& aParent,
+                           int32_t aOffsetInParent);
+
+  NS_DECL_ISUPPORTS_INHERITED
+  NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(CreateElementTransaction,
+                                           EditTransactionBase)
+
+  NS_DECL_EDITTRANSACTIONBASE
+
+  NS_IMETHOD RedoTransaction() override;
+
+  already_AddRefed<dom::Element> GetNewNode();
+
+protected:
+  virtual ~CreateElementTransaction();
+
+  // The document into which the new node will be inserted.
+  EditorBase* mEditorBase;
+
+  // The tag (mapping to object type) for the new element.
+  nsCOMPtr<nsIAtom> mTag;
+
+  // The node into which the new node will be inserted.
+  nsCOMPtr<nsINode> mParent;
+
+  // The index in mParent for the new node.
+  int32_t mOffsetInParent;
+
+  // The new node to insert.
+  nsCOMPtr<dom::Element> mNewNode;
+
+  // The node we will insert mNewNode before.  We compute this ourselves.
+  nsCOMPtr<nsIContent> mRefNode;
+};
+
+} // namespace mozilla
+
+#endif // #ifndef CreateElementTransaction_h