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diff --git a/framework/inc/dispatch/oxt_handler.hxx b/framework/inc/dispatch/oxt_handler.hxx
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+++ b/framework/inc/dispatch/oxt_handler.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 .
+ */
+
+#pragma once
+
+#include <com/sun/star/frame/XNotifyingDispatch.hpp>
+#include <com/sun/star/frame/XStatusListener.hpp>
+#include <com/sun/star/document/XExtendedFilterDetection.hpp>
+#include <com/sun/star/beans/PropertyValue.hpp>
+#include <com/sun/star/util/URL.hpp>
+#include <com/sun/star/lang/XServiceInfo.hpp>
+#include <com/sun/star/uno/XComponentContext.hpp>
+
+#include <cppuhelper/implbase.hxx>
+#include <mutex>
+
+namespace framework{
+
+/*-************************************************************************************************************
+    @short          handler to detect and play sounds ("wav" and "au" only!)
+    @descr          Register this implementation as a content handler to detect and/or play wav- and au-sounds.
+                    It doesn't depend from the target platform. But one instance of this class
+                    can play one sound at the same time only. Means every new dispatch request will stop the
+                    might still running one. So we support one operation/one URL/one listener at the same time
+                    only.
+
+    @devstatus      ready
+    @threadsafe     yes
+*//*-*************************************************************************************************************/
+class Oxt_Handler final  :  public  ::cppu::WeakImplHelper<
+                                    css::lang::XServiceInfo,
+                                    css::frame::XNotifyingDispatch, // => XDispatch
+                                    css::document::XExtendedFilterDetection >
+{
+
+    public:
+
+                 Oxt_Handler( css::uno::Reference< css::uno::XComponentContext > );
+        virtual ~Oxt_Handler(                                                                        ) override;
+
+        /* interface XServiceInfo */
+        virtual OUString SAL_CALL getImplementationName() override;
+        virtual sal_Bool SAL_CALL supportsService( const OUString& sServiceName ) override;
+        virtual css::uno::Sequence< OUString > SAL_CALL getSupportedServiceNames() override;
+
+        //  XNotifyingDispatch
+
+        virtual void SAL_CALL dispatchWithNotification(const css::util::URL&                                             aURL      ,
+                                                       const css::uno::Sequence< css::beans::PropertyValue >&            lArguments,
+                                                       const css::uno::Reference< css::frame::XDispatchResultListener >& xListener ) override;
+
+        //  XDispatch
+
+        virtual void SAL_CALL dispatch              (  const css::util::URL&                                     aURL        ,
+                                                       const css::uno::Sequence< css::beans::PropertyValue >&    lArguments  ) override;
+        // not supported !
+        virtual void SAL_CALL addStatusListener     (  const css::uno::Reference< css::frame::XStatusListener >& /*xListener*/   ,
+                                                       const css::util::URL&                                     /*aURL*/        ) override {};
+        virtual void SAL_CALL removeStatusListener  (  const css::uno::Reference< css::frame::XStatusListener >& /*xListener*/   ,
+                                                       const css::util::URL&                                     /*aURL*/        ) override {};
+
+        //  XExtendedFilterDetection
+        virtual OUString SAL_CALL detect     (        css::uno::Sequence< css::beans::PropertyValue >&    lDescriptor ) override;
+
+    private:
+        std::mutex m_mutex;
+
+        css::uno::Reference< css::uno::XComponentContext >     m_xContext;   /// global uno service factory to create new services
+
+};
+
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */