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diff --git a/include/svl/stylesheetuser.hxx b/include/svl/stylesheetuser.hxx
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+++ b/include/svl/stylesheetuser.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/.
+ */
+
+#ifndef INCLUDED_SVL_STYLESHEETUSER_HXX
+#define INCLUDED_SVL_STYLESHEETUSER_HXX
+
+#include <sal/config.h>
+
+#include <sal/types.h>
+
+namespace svl
+{
+
+/** Test whether object that uses a stylesheet is used itself.
+
+  This interface should be implemented by all classes that use
+  a SfxStyleSheet (and listen on it). It can be queried by the stylesheet
+  to determine if it is really used.
+  */
+class SAL_DLLPUBLIC_RTTI StyleSheetUser
+{
+public:
+    /** Test whether this object is used.
+
+      @return true, if the object is used, false otherwise
+      */
+    virtual bool isUsedByModel() const = 0;
+protected:
+    ~StyleSheetUser() {}
+};
+
+}
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */