1 files changed, 78 insertions, 0 deletions
diff --git a/editor/libeditor/DeleteRangeTransaction.h b/editor/libeditor/DeleteRangeTransaction.h
new file mode 100644
index 0000000000..9b60a5ba2a
--- /dev/null
+++ b/editor/libeditor/DeleteRangeTransaction.h
@@ -0,0 +1,78 @@
+/* -*- 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 DeleteRangeTransaction_h
+#define DeleteRangeTransaction_h
+
+#include "EditAggregateTransaction.h"
+#include "nsCycleCollectionParticipant.h"
+#include "nsID.h"
+#include "nsIEditor.h"
+#include "nsISupportsImpl.h"
+#include "nsRange.h"
+#include "nscore.h"
+
+class nsINode;
+
+namespace mozilla {
+
+class EditorBase;
+class RangeUpdater;
+
+/**
+ * A transaction that deletes an entire range in the content tree
+ */
+class DeleteRangeTransaction final : public EditAggregateTransaction
+{
+public:
+  /**
+   * Initialize the transaction.
+   * @param aEditorBase The object providing basic editing operations.
+   * @param aRange      The range to delete.
+   */
+  nsresult Init(EditorBase* aEditorBase,
+                nsRange* aRange,
+                RangeUpdater* aRangeUpdater);
+
+  DeleteRangeTransaction();
+
+  NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(DeleteRangeTransaction,
+                                           EditAggregateTransaction)
+  NS_IMETHOD QueryInterface(REFNSIID aIID, void** aInstancePtr) override;
+
+  NS_DECL_EDITTRANSACTIONBASE
+
+  NS_IMETHOD RedoTransaction() override;
+
+  virtual void LastRelease() override
+  {
+    mRange = nullptr;
+    EditAggregateTransaction::LastRelease();
+  }
+
+protected:
+  nsresult CreateTxnsToDeleteBetween(nsINode* aNode,
+                                     int32_t aStartOffset,
+                                     int32_t aEndOffset);
+
+  nsresult CreateTxnsToDeleteNodesBetween();
+
+  nsresult CreateTxnsToDeleteContent(nsINode* aParent,
+                                     int32_t aOffset,
+                                     nsIEditor::EDirection aAction);
+
+  // P1 in the range.
+  RefPtr<nsRange> mRange;
+
+  // The editor for this transaction.
+  EditorBase* mEditorBase;
+
+  // Range updater object.
+  RangeUpdater* mRangeUpdater;
+};
+
+} // namespace mozilla
+
+#endif // #ifndef DeleteRangeTransaction_h