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diff --git a/include/svx/sidebar/ContextChangeEventMultiplexer.hxx b/include/svx/sidebar/ContextChangeEventMultiplexer.hxx
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+++ b/include/svx/sidebar/ContextChangeEventMultiplexer.hxx
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+/* -*- 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_SVX_SIDEBAR_CONTEXTCHANGEEVENTMULTIPLEXER_HXX
+#define INCLUDED_SVX_SIDEBAR_CONTEXTCHANGEEVENTMULTIPLEXER_HXX
+
+#include <svx/svxdllapi.h>
+#include <vcl/EnumContext.hxx>
+#include <com/sun/star/frame/XController.hpp>
+#include <com/sun/star/frame/XFrame.hpp>
+
+
+class SfxViewShell;
+
+/** Convenience frontend for css::ui::ContextChangeEventMultiplexer
+*/
+class SVX_DLLPUBLIC ContextChangeEventMultiplexer
+{
+public:
+    /** Notify the activation of a context.
+        @param rxController
+            This controller is used to determine the module (ie
+            application like Writer or Calc).
+        @param eContext
+            The activated context.
+    */
+    static void NotifyContextChange (
+        const css::uno::Reference<css::frame::XController>& rxController,
+        const vcl::EnumContext::Context eContext);
+
+    /** Notify the activation of a context.
+        @param pViewShell
+            This view shell is used to determine the module (ie
+            application like Writer or Calc).  When <NULL/> then no
+            notification is made.
+        @param eContext
+            The activated context.
+    */
+    static void NotifyContextChange (
+        const SfxViewShell* pViewShell,
+        const vcl::EnumContext::Context eContext);
+
+private:
+    static OUString GetModuleName (
+        const css::uno::Reference<css::frame::XFrame>& rxFrame);
+};
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */