/* -*- 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 <memory>

#include <optional>

#include <com/sun/star/uno/Reference.h>

#include <com/sun/star/i18n/ForbiddenCharacters.hpp>

#include <i18nlangtag/languagetag.hxx>

#include <rtl/ref.hxx>

#include <i18npool/breakiterator.hxx>

#include "swdllapi.h"

enum class SvtScriptType : sal_uInt8;

namespace com::sun::star::uno { class XComponentContext; }

class SW_DLLPUBLIC SwBreakIt

{

    css::uno::Reference< css::uno::XComponentContext > m_xContext;

    rtl::Reference<i18npool::BreakIterator> m_xBreak;

    std::unique_ptr<LanguageTag> m_xLanguageTag;   ///< language tag of the current locale

    std::optional<css::i18n::ForbiddenCharacters> m_oForbidden;

    LanguageType m_aForbiddenLang; ///< language of the current forbiddenChar struct

    void GetLocale_( const LanguageType aLang );

    void GetLocale_( const LanguageTag& rLanguageTag );

    void GetForbidden_( const LanguageType  aLang );

    SwBreakIt(SwBreakIt const&) = delete;

    SwBreakIt& operator=(SwBreakIt const&) = delete;

    // private (see @ Create_, Delete_).

    explicit SwBreakIt(css::uno::Reference<css::uno::XComponentContext> xContext);

public:

    // private (see @ source/core/bastyp/init.cxx).

    static void Create_(

        const css::uno::Reference< css::uno::XComponentContext > & rxContext);

    static void Delete_();

public:

    static SwBreakIt * Get();

    rtl::Reference< i18npool::BreakIterator > const & GetBreakIter() const

    {

        return m_xBreak;

    }

    const css::lang::Locale& GetLocale( const LanguageType aLang )

    {

        if (!m_xLanguageTag || m_xLanguageTag->getLanguageType() != aLang)

            GetLocale_(aLang);

        return m_xLanguageTag->getLocale();

    }

    const css::lang::Locale& GetLocale( const LanguageTag& rLanguageTag )

    {

        // Use LanguageType comparison instead of LanguageTag::operator!=()

        // because here the LanguageTag is already a known LanguageType value

        // assigned, so LanguageTag does not need to convert to BCP47 for

        // comparison.

        if (!m_xLanguageTag || m_xLanguageTag->getLanguageType() != rLanguageTag.getLanguageType())

            GetLocale_(rLanguageTag);

        return m_xLanguageTag->getLocale();

    }

    const LanguageTag& GetLanguageTag( const LanguageType aLang )

    {

        if (!m_xLanguageTag || m_xLanguageTag->getLanguageType() != aLang)

            GetLocale_(aLang);

        return *m_xLanguageTag;

    }

    const LanguageTag& GetLanguageTag( const LanguageTag& rLanguageTag )

    {

        // Use LanguageType comparison instead of LanguageTag::operator!=()

        // because here the LanguageTag is already a known LanguageType value

        // assigned, so LanguageTag does not need to convert to BCP47 for

        // comparison.

        if (!m_xLanguageTag || m_xLanguageTag->getLanguageType() != rLanguageTag.getLanguageType())

            GetLocale_( rLanguageTag );

        return *m_xLanguageTag;

    }

    const css::i18n::ForbiddenCharacters& GetForbidden( const LanguageType aLang )

    {

        if (!m_oForbidden || m_aForbiddenLang != aLang)

            GetForbidden_( aLang );

        return *m_oForbidden;

    }

    sal_uInt16 GetRealScriptOfText( const OUString& rText, sal_Int32 nPos ) const;

    SvtScriptType GetAllScriptsOfText( const OUString& rText ) const;

    sal_Int32 getGraphemeCount(const OUString& rStr,

        sal_Int32 nStart, sal_Int32 nEnd) const;

    sal_Int32 getGraphemeCount(const OUString& rStr) const

    {

        return getGraphemeCount(rStr, 0, rStr.getLength());

    }

};

#define SW_BREAKITER()  SwBreakIt::Get()

// @@@ backward compatibility @@@

SW_DLLPUBLIC extern SwBreakIt* g_pBreakIt;

/* vim:set shiftwidth=4 softtabstop=4 expandtab: */