1 files changed, 61 insertions, 0 deletions
diff --git a/include/framework/documentundoguard.hxx b/include/framework/documentundoguard.hxx
new file mode 100644
index 000000000..c707257a4
--- /dev/null
+++ b/include/framework/documentundoguard.hxx
@@ -0,0 +1,61 @@
+/* -*- 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 .
+ */
+
+#ifndef INCLUDED_FRAMEWORK_DOCUMENTUNDOGUARD_HXX
+#define INCLUDED_FRAMEWORK_DOCUMENTUNDOGUARD_HXX
+
+#include <framework/fwedllapi.h>
+
+#include <com/sun/star/uno/Reference.hxx>
+
+#include <memory>
+
+namespace com::sun::star::uno { class XInterface; }
+
+namespace framework
+{
+    //= DocumentUndoGuard
+
+    struct DocumentUndoGuard_Data;
+    /** a helper class guarding the Undo manager of a document
+
+        This class guards, within a given scope, the Undo Manager of a document (or another component supporting
+        the XUndoManagerSupplier interface). When entering the scope (i.e. when the <code>DocumentUndoGuard</code>
+        instances is constructed), the current state of the undo contexts of the undo manager is examined.
+        Upon leaving the scope (i.e. when the <code>DocumentUndoGuard</code> is destructed), the guard will execute
+        as many calls to <member scope="css::document">XUndoManager::leaveUndoContext</member> as are
+        necessary to restore the manager's initial state.
+    */
+    class FWE_DLLPUBLIC DocumentUndoGuard
+    {
+    public:
+        DocumentUndoGuard( const css::uno::Reference< css::uno::XInterface >& i_undoSupplierComponent );
+        ~DocumentUndoGuard();
+
+    private:
+        std::unique_ptr< DocumentUndoGuard_Data >   m_xData;
+    };
+
+
+} // namespace framework
+
+
+#endif // INCLUDED_FRAMEWORK_DOCUMENTUNDOGUARD_HXX
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */