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diff --git a/comphelper/source/misc/accessiblekeybindinghelper.cxx b/comphelper/source/misc/accessiblekeybindinghelper.cxx
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+++ b/comphelper/source/misc/accessiblekeybindinghelper.cxx
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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 .
+ */
+
+#include <sal/config.h>
+
+#include <com/sun/star/lang/IndexOutOfBoundsException.hpp>
+#include <comphelper/accessiblekeybindinghelper.hxx>
+#include <o3tl/safeint.hxx>
+
+
+namespace comphelper
+{
+
+
+    using namespace ::com::sun::star; // MT 04/2003: was ::drafts::com::sun::star - otherwise too many changes
+    using namespace ::com::sun::star::uno;
+    using namespace ::com::sun::star::lang;
+    using namespace ::com::sun::star::accessibility;
+
+
+    // OAccessibleKeyBindingHelper
+
+
+    OAccessibleKeyBindingHelper::OAccessibleKeyBindingHelper()
+    {
+    }
+
+
+    OAccessibleKeyBindingHelper::OAccessibleKeyBindingHelper( const OAccessibleKeyBindingHelper& rHelper )
+        : cppu::WeakImplHelper<XAccessibleKeyBinding>( rHelper )
+        , m_aKeyBindings( rHelper.m_aKeyBindings )
+    {
+    }
+
+
+    OAccessibleKeyBindingHelper::~OAccessibleKeyBindingHelper()
+    {
+    }
+
+
+    void OAccessibleKeyBindingHelper::AddKeyBinding( const Sequence< awt::KeyStroke >& rKeyBinding )
+    {
+        std::scoped_lock aGuard( m_aMutex );
+
+        m_aKeyBindings.push_back( rKeyBinding );
+    }
+
+
+    void OAccessibleKeyBindingHelper::AddKeyBinding( const awt::KeyStroke& rKeyStroke )
+    {
+        std::scoped_lock aGuard( m_aMutex );
+        m_aKeyBindings.push_back( { rKeyStroke } );
+    }
+
+
+    // XAccessibleKeyBinding
+
+
+    sal_Int32 OAccessibleKeyBindingHelper::getAccessibleKeyBindingCount()
+    {
+        std::scoped_lock aGuard( m_aMutex );
+
+        return m_aKeyBindings.size();
+    }
+
+
+    Sequence< awt::KeyStroke > OAccessibleKeyBindingHelper::getAccessibleKeyBinding( sal_Int32 nIndex )
+    {
+        std::scoped_lock aGuard( m_aMutex );
+
+        if ( nIndex < 0 || o3tl::make_unsigned(nIndex) >= m_aKeyBindings.size() )
+            throw IndexOutOfBoundsException();
+
+        return m_aKeyBindings[nIndex];
+    }
+
+
+}   // namespace comphelper
+
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */