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diff --git a/sw/source/core/inc/retrievedinputstreamdata.hxx b/sw/source/core/inc/retrievedinputstreamdata.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_SW_SOURCE_CORE_INC_RETRIEVEDINPUTSTREAMDATA_HXX
+#define INCLUDED_SW_SOURCE_CORE_INC_RETRIEVEDINPUTSTREAMDATA_HXX
+
+#include <tools/link.hxx>
+#include <sal/types.h>
+#include <mutex>
+#include <com/sun/star/uno/Reference.hxx>
+
+#include <map>
+#include <memory>
+
+namespace com::sun::star::io { class XInputStream; }
+
+class SwAsyncRetrieveInputStreamThreadConsumer;
+
+/** Singleton class to manage retrieved input stream data in Writer
+
+    OD 2007-01-29 #i73788#
+    The instance of this class provides data container for retrieved input
+    stream data. The data container is accessed via a key, which the data
+    manager provides on creation of the data container.
+    When a certain data container is filled with data, an user event is submitted
+    to trigger the processing of with data.
+*/
+class SwRetrievedInputStreamDataManager
+{
+    public:
+
+        typedef sal_uInt64 tDataKey;
+
+        struct tData
+        {
+            std::weak_ptr< SwAsyncRetrieveInputStreamThreadConsumer > mpThreadConsumer;
+            css::uno::Reference<css::io::XInputStream> mxInputStream;
+            bool mbIsStreamReadOnly;
+
+            tData()
+                : mpThreadConsumer(),
+                  mbIsStreamReadOnly( false )
+            {};
+
+            tData( std::weak_ptr< SwAsyncRetrieveInputStreamThreadConsumer > pThreadConsumer )
+                : mpThreadConsumer( pThreadConsumer ),
+                  mbIsStreamReadOnly( false )
+            {};
+        };
+
+        static SwRetrievedInputStreamDataManager& GetManager();
+
+        tDataKey ReserveData( std::weak_ptr< SwAsyncRetrieveInputStreamThreadConsumer > const & pThreadConsumer );
+
+        void PushData( const tDataKey nDataKey,
+                       css::uno::Reference<css::io::XInputStream> const & xInputStream,
+                       const bool bIsStreamReadOnly );
+
+        bool PopData( const tDataKey nDataKey,
+                      tData& rData );
+
+        DECL_STATIC_LINK( SwRetrievedInputStreamDataManager, LinkedInputStreamReady, void*, void );
+
+    private:
+
+        static tDataKey snNextKeyValue;
+
+        std::mutex maMutex;
+
+        std::map< tDataKey, tData > maInputStreamData;
+};
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */