1 files changed, 75 insertions, 0 deletions
diff --git a/sc/source/ui/undo/undoolk.cxx b/sc/source/ui/undo/undoolk.cxx
new file mode 100644
index 0000000000..519ae20a77
--- /dev/null
+++ b/sc/source/ui/undo/undoolk.cxx
@@ -0,0 +1,75 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * 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/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <svx/svdundo.hxx>
+
+#include <document.hxx>
+#include <drwlayer.hxx>
+#include <undoolk.hxx>
+
+std::unique_ptr<SdrUndoAction> GetSdrUndoAction(ScDocument* pDoc)
+{
+    ScDrawLayer* pLayer = pDoc->GetDrawLayer();
+    if (pLayer)
+        return pLayer->GetCalcUndo(); // must exist
+    else
+        return nullptr;
+}
+
+void DoSdrUndoAction(SdrUndoAction* pUndoAction, ScDocument* pDoc)
+{
+    if (pUndoAction)
+        pUndoAction->Undo();
+    else
+    {
+        // if no drawing layer existed when the action was created,
+        // but it was created after that, there is no draw undo action,
+        // and after undo there might be a drawing layer with a wrong page count.
+        // The drawing layer must have been empty in that case, so any missing
+        // pages can just be created now.
+
+        ScDrawLayer* pDrawLayer = pDoc->GetDrawLayer();
+        if (pDrawLayer)
+        {
+            SCTAB nTabCount = pDoc->GetTableCount();
+            SCTAB nPages = static_cast<SCTAB>(pDrawLayer->GetPageCount());
+            while (nPages < nTabCount)
+            {
+                pDrawLayer->ScAddPage(nPages);
+                ++nPages;
+            }
+        }
+    }
+}
+
+void RedoSdrUndoAction(SdrUndoAction* pUndoAction)
+{
+    // DoSdrUndoAction/RedoSdrUndoAction is called even if the pointer is null
+    if (pUndoAction)
+        pUndoAction->Redo();
+}
+
+void EnableDrawAdjust(ScDocument* pDoc, bool bEnable)
+{
+    ScDrawLayer* pLayer = pDoc->GetDrawLayer();
+    if (pLayer)
+        pLayer->EnableAdjust(bEnable);
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */