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diff --git a/i18npool/inc/inputsequencechecker.hxx b/i18npool/inc/inputsequencechecker.hxx
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+++ b/i18npool/inc/inputsequencechecker.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_I18NPOOL_INC_INPUTSEQUENCECHECKER_HXX
+#define INCLUDED_I18NPOOL_INC_INPUTSEQUENCECHECKER_HXX
+
+#include <cppuhelper/implbase.hxx>
+#include <com/sun/star/lang/XServiceInfo.hpp>
+#include <com/sun/star/i18n/XExtendedInputSequenceChecker.hpp>
+
+#include <vector>
+#include <memory>
+
+namespace com::sun::star::uno { class XComponentContext; }
+
+namespace i18npool {
+
+
+
+class InputSequenceCheckerImpl : public cppu::WeakImplHelper
+<
+    css::i18n::XExtendedInputSequenceChecker,
+    css::lang::XServiceInfo
+>
+{
+public:
+    InputSequenceCheckerImpl( const css::uno::Reference < css::uno::XComponentContext >& rxContext );
+    InputSequenceCheckerImpl(const char *pServiceName);
+    virtual ~InputSequenceCheckerImpl() override;
+
+    virtual sal_Bool SAL_CALL checkInputSequence(const OUString& Text, sal_Int32 nStartPos,
+        sal_Unicode inputChar, sal_Int16 inputCheckMode) override;
+
+    virtual sal_Int32 SAL_CALL correctInputSequence(OUString& Text, sal_Int32 nStartPos,
+        sal_Unicode inputChar, sal_Int16 inputCheckMode) override;
+
+    //XServiceInfo
+    virtual OUString SAL_CALL getImplementationName() override;
+    virtual sal_Bool SAL_CALL supportsService(const OUString& ServiceName) override;
+    virtual css::uno::Sequence< OUString > SAL_CALL getSupportedServiceNames() override;
+
+private:
+    const char *serviceName;
+
+    struct lookupTableItem {
+        lookupTableItem(const char* rLanguage, const css::uno::Reference < css::i18n::XExtendedInputSequenceChecker >& rxISC) :
+            aLanguage(rLanguage), xISC(rxISC) {}
+        const char* aLanguage;
+        css::uno::Reference < css::i18n::XExtendedInputSequenceChecker > xISC;
+    };
+    std::vector<std::unique_ptr<lookupTableItem>> lookupTable;
+    lookupTableItem *cachedItem;
+
+    css::uno::Reference < css::uno::XComponentContext > m_xContext;
+
+    /// @throws css::uno::RuntimeException
+    css::uno::Reference< css::i18n::XExtendedInputSequenceChecker >& getInputSequenceChecker(char const * rLanguage);
+    static char* getLanguageByScripType(sal_Unicode cChar, sal_Unicode nChar);
+};
+
+}
+
+#endif // INCLUDED_I18NPOOL_INC_INPUTSEQUENCECHECKER_HXX
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */