1 files changed, 72 insertions, 0 deletions
diff --git a/sc/inc/chartlock.hxx b/sc/inc/chartlock.hxx
new file mode 100644
index 0000000000..bf66b7f5b7
--- /dev/null
+++ b/sc/inc/chartlock.hxx
@@ -0,0 +1,72 @@
+/* -*- 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 .
+ */
+
+#pragma once
+
+#include <vcl/timer.hxx>
+
+#include <cppuhelper/weakref.hxx>
+
+#include <memory>
+#include <vector>
+
+namespace com::sun::star::frame { class XModel; }
+
+class ScDocument;
+
+/** All current charts in the calc will be locked in constructor and unlocked in destructor.
+*/
+class ScChartLockGuard final
+{
+public:
+                    ScChartLockGuard( ScDocument* pDoc );
+                    ~ScChartLockGuard();
+
+    void            AlsoLockThisChart( const css::uno::Reference< css::frame::XModel >& xModel );
+
+private:
+    std::vector< css::uno::WeakReference< css::frame::XModel > > maChartModels;
+
+    ScChartLockGuard( const ScChartLockGuard& ) = delete;
+};
+
+/** Use this to lock all charts in the calc for a little time.
+    They will unlock automatically unless you call StartOrContinueLocking() again.
+*/
+class ScTemporaryChartLock final
+{
+public:
+                    ScTemporaryChartLock( ScDocument* pDoc );
+                    ~ScTemporaryChartLock();
+
+    void            StartOrContinueLocking();
+    void            StopLocking();
+    void            AlsoLockThisChart( const css::uno::Reference< css::frame::XModel >& xModel );
+
+private:
+    ScDocument*                         mpDoc;
+    Timer                               maTimer;
+    std::unique_ptr< ScChartLockGuard >   mapScChartLockGuard;
+
+    DECL_LINK(TimeoutHdl, Timer *, void);
+
+    ScTemporaryChartLock( const ScTemporaryChartLock& ) = delete;
+};
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */