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diff --git a/extensions/source/logging/loghandler.hxx b/extensions/source/logging/loghandler.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 <sal/config.h>
+
+#include <string_view>
+
+#include <com/sun/star/logging/XLogFormatter.hpp>
+#include <com/sun/star/uno/XComponentContext.hpp>
+#include <com/sun/star/logging/LogRecord.hpp>
+
+#include <comphelper/namedvaluecollection.hxx>
+#include <cppuhelper/interfacecontainer.hxx>
+#include <rtl/string.hxx>
+
+
+namespace logging
+{
+
+    class LogHandlerHelper
+    {
+    private:
+        // <attributes>
+        rtl_TextEncoding            m_eEncoding;
+        sal_Int32                   m_nLevel;
+        css::uno::Reference< css::logging::XLogFormatter >
+                                    m_xFormatter;
+        // <//attributes>
+
+        css::uno::Reference< css::uno::XComponentContext >
+                                    m_xContext;
+        ::osl::Mutex&               m_rMutex;
+        ::cppu::OBroadcastHelper&   m_rBHelper;
+        bool                        m_bInitialized;
+
+    public:
+        LogHandlerHelper(
+            const css::uno::Reference< css::uno::XComponentContext >& _rxContext,
+            ::osl::Mutex& _rMutex,
+            ::cppu::OBroadcastHelper& _rBHelper
+        );
+
+    public:
+        void    setIsInitialized() { m_bInitialized = true; }
+
+        bool    getEncoding(        OUString& _out_rEncoding ) const;
+        bool    setEncoding( std::u16string_view _rEncoding  );
+
+        rtl_TextEncoding
+                getTextEncoding() const { return m_eEncoding; }
+
+        const css::uno::Reference< css::logging::XLogFormatter >&
+                getFormatter() const { return m_xFormatter; }
+        void
+                setFormatter( const css::uno::Reference< css::logging::XLogFormatter >& _rxFormatter )
+                {
+                    m_xFormatter = _rxFormatter;
+                }
+
+        sal_Int32
+                getLevel() const { return m_nLevel; }
+        void
+                setLevel( const sal_Int32 _nLevel )
+                {
+                    m_nLevel = _nLevel;
+                }
+
+        /** prepares implementation of a public accessible method of a log handler
+
+            <code>enterMethod</code> does the following things:
+            <ul><li>It acquires the mutex given in the constructor.</li>
+                <li>It checks whether the component is already initialized, and throws an exception if not os.</li>
+                <li>It checks whether the component is already disposed, and throws an exception if not os.</li>
+                <li>It creates a default formatter (PlainTextFormatter), if no formatter exists at this time.</li>
+            </ul>
+        */
+        void enterMethod();
+
+        /** formats a record for publishing it
+
+            The method first checks whether the records log level is greater or equal our own
+            log level. If not, <FALSE/> is returned.
+
+            Second, our formatter is used to create a unicode string from the log record. If an error occurs
+            during this, e.g. if the formatter is <NULL/> or throws an exception during formatting,
+            <FALSE/> is returned.
+
+            Finally, the unicode string is encoded into a byte string, using our encoding setting. Then,
+            <TRUE/> is returned.
+        */
+        bool    formatForPublishing( const css::logging::LogRecord& _rRecord, OString& _out_rEntry ) const;
+
+        /** retrieves our formatter's heading, encoded with our encoding
+
+            @return <TRUE/> in case of success, <FALSE/> if any error occurred
+        */
+        bool    getEncodedHead( OString& _out_rHead ) const;
+
+        /** retrieves our formatter's tail, encoded with our encoding
+
+            @return <TRUE/> in case of success, <FALSE/> if any error occurred
+        */
+        bool    getEncodedTail( OString& _out_rTail ) const;
+
+        /** initializes the instance from a collection of named settings
+
+            The recognized named settings are <code>Encoding</code>, <code>Formatter</code>, and <code>Level</code>,
+            which initialize the respective attributes.
+
+            Settings which are recognized are remove from the given collection. This allows
+            the caller to determine whether or not the collection contained any unsupported
+            items, and react appropriately.
+
+            @throws IllegalArgumentException
+                if one of the values in the collection is of wrong type.
+        */
+        void    initFromSettings( const ::comphelper::NamedValueCollection& _rSettings );
+    };
+
+
+} // namespace logging
+
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */