/* -*- 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 <com/sun/star/linguistic2/XLanguageGuessing.hpp>

#include <com/sun/star/document/XDocumentEventListener.hpp>

#include <com/sun/star/util/XChangesListener.hpp>

#include <com/sun/star/container/XContainerListener.hpp>

#include <com/sun/star/frame/XFrame.hpp>

#include <com/sun/star/uno/XComponentContext.hpp>

#include <com/sun/star/ui/XContextChangeEventListener.hpp>

#include <cppuhelper/implbase.hxx>

#include <cppuhelper/weakref.hxx>

#include <i18nlangtag/lang.h>

#include <o3tl/string_view.hxx>

#include <svl/languageoptions.hxx>

#include <rtl/ustring.hxx>

#include <functional>

#include <set>

#include <utility>

namespace framework

{

// menu ids for language status bar control

enum LangMenuIDs

{

    MID_LANG_SEL_1 = 1,     // need to start with 1 since xPopupMenu->execute will return 0 if the menu is cancelled

    MID_LANG_SEL_2,

    MID_LANG_SEL_3,

    MID_LANG_SEL_4,

    MID_LANG_SEL_5,

    MID_LANG_SEL_6,

    MID_LANG_SEL_7,

    MID_LANG_SEL_8,

    MID_LANG_SEL_9,

    MID_LANG_SEL_NONE,

    MID_LANG_SEL_RESET,

    MID_LANG_SEL_MORE,

    MID_LANG_DEF_NONE,

    MID_LANG_DEF_RESET,

    MID_LANG_DEF_MORE,

    MID_LANG_PARA_SEPARATOR,

    MID_LANG_PARA_STRING,

    MID_LANG_PARA_1,

    MID_LANG_PARA_2,

    MID_LANG_PARA_3,

    MID_LANG_PARA_4,

    MID_LANG_PARA_5,

    MID_LANG_PARA_6,

    MID_LANG_PARA_7,

    MID_LANG_PARA_8,

    MID_LANG_PARA_9,

    MID_LANG_PARA_NONE,

    MID_LANG_PARA_RESET,

    MID_LANG_PARA_MORE,

};

inline bool IsScriptTypeMatchingToLanguage( SvtScriptType nScriptType, LanguageType nLang )

{

    return bool(nScriptType & SvtLanguageOptions::GetScriptTypeOfLanguage( nLang ));

}

inline void RetrieveTypeNameFromResourceURL( std::u16string_view aResourceURL, OUString& aType, OUString& aName )

{

    static constexpr std::u16string_view RESOURCEURL_PREFIX = u"private:resource/";

    if (o3tl::starts_with(aResourceURL, RESOURCEURL_PREFIX ))

    {

        size_t nIdx = RESOURCEURL_PREFIX.size();

        while (nIdx < aResourceURL.size() && aResourceURL[nIdx]=='/')

            ++nIdx;

        if (nIdx >= aResourceURL.size())

            return;

        aType = o3tl::getToken(aResourceURL, u'/', nIdx);

        if (nIdx == std::u16string_view::npos)

            return;

        while (nIdx < aResourceURL.size() && aResourceURL[nIdx]=='/')

            ++nIdx;

        if (nIdx >= aResourceURL.size())

            return;

        aName = o3tl::getToken(aResourceURL, u'/', nIdx);

    }

}

class LanguageGuessingHelper

{

    mutable css::uno::Reference< css::linguistic2::XLanguageGuessing >    m_xLanguageGuesser;

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

public:

    LanguageGuessingHelper(css::uno::Reference< css::uno::XComponentContext > _xContext) : m_xContext(std::move(_xContext)){}

    css::uno::Reference< css::linguistic2::XLanguageGuessing > const &  GetGuesser() const;

};

void FillLangItems( std::set< OUString > &rLangItems,

        const css::uno::Reference< css::frame::XFrame > &rxFrame,

        const LanguageGuessingHelper & rLangGuessHelper,

        SvtScriptType    nScriptType,

        const OUString & rCurLang,

        const OUString & rKeyboardLang,

        const OUString & rGuessedTextLang );

//It's common for an object to want to create and own a Broadcaster and set

//itself as a Listener on its own Broadcaster member.

//However, calling addListener on a Broadcaster means that the Broadcaster adds

//a reference to the Listener leading to an ownership cycle where the Listener

//owns the Broadcaster which "owns" the Listener.

//The WeakContainerListener allows breaking this cycle and retrofitting

//afflicted implementations fairly easily.

//OriginalListener owns the Broadcaster which "owns" the WeakContainerListener

//which forwards the events to the OriginalListener without taking ownership of

//it.

class WeakContainerListener final : public ::cppu::WeakImplHelper<css::container::XContainerListener>

{

    private:

        css::uno::WeakReference<css::container::XContainerListener> mxOwner;

    public:

        WeakContainerListener(css::uno::Reference<css::container::XContainerListener> const & xOwner)

            : mxOwner(xOwner)

        {

        }

        // container.XContainerListener

        virtual void SAL_CALL elementInserted(const css::container::ContainerEvent& rEvent) override

        {

            css::uno::Reference<css::container::XContainerListener> xOwner(mxOwner.get(),

                css::uno::UNO_QUERY);

            if (xOwner.is())

                xOwner->elementInserted(rEvent);

        }

        virtual void SAL_CALL elementRemoved(const css::container::ContainerEvent& rEvent) override

        {

            css::uno::Reference<css::container::XContainerListener> xOwner(mxOwner.get(),

                css::uno::UNO_QUERY);

            if (xOwner.is())

                xOwner->elementRemoved(rEvent);

        }

        virtual void SAL_CALL elementReplaced(const css::container::ContainerEvent& rEvent) override

        {

            css::uno::Reference<css::container::XContainerListener> xOwner(mxOwner.get(),

                css::uno::UNO_QUERY);

            if (xOwner.is())

                xOwner->elementReplaced(rEvent);

        }

        // lang.XEventListener

        virtual void SAL_CALL disposing(const css::lang::EventObject& rEvent) override

        {

            css::uno::Reference<css::container::XContainerListener> xOwner(mxOwner.get(),

                css::uno::UNO_QUERY);

            if (xOwner.is())

                xOwner->disposing(rEvent);

        }

};

class WeakChangesListener final : public ::cppu::WeakImplHelper<css::util::XChangesListener>

{

    private:

        css::uno::WeakReference<css::util::XChangesListener> mxOwner;

    public:

        WeakChangesListener(css::uno::Reference<css::util::XChangesListener> const & xOwner)

            : mxOwner(xOwner)

        {

        }

        // util.XChangesListener

        virtual void SAL_CALL changesOccurred(const css::util::ChangesEvent& rEvent) override

        {

            css::uno::Reference<css::util::XChangesListener> xOwner(mxOwner.get(),

                css::uno::UNO_QUERY);

            if (xOwner.is())

                xOwner->changesOccurred(rEvent);

        }

        // lang.XEventListener

        virtual void SAL_CALL disposing(const css::lang::EventObject& rEvent) override

        {

            css::uno::Reference<css::util::XChangesListener> xOwner(mxOwner.get(),

                css::uno::UNO_QUERY);

            if (xOwner.is())

                xOwner->disposing(rEvent);

        }

};

class WeakDocumentEventListener final : public ::cppu::WeakImplHelper<css::document::XDocumentEventListener>

{

    private:

        css::uno::WeakReference<css::document::XDocumentEventListener> mxOwner;

    public:

        WeakDocumentEventListener(css::uno::Reference<css::document::XDocumentEventListener> const & xOwner)

            : mxOwner(xOwner)

        {

        }

        virtual void SAL_CALL documentEventOccured(const css::document::DocumentEvent& rEvent) override

        {

            css::uno::Reference<css::document::XDocumentEventListener> xOwner(mxOwner.get(),

                css::uno::UNO_QUERY);

            if (xOwner.is())

                xOwner->documentEventOccured(rEvent);

        }

        // lang.XEventListener

        virtual void SAL_CALL disposing(const css::lang::EventObject& rEvent) override

        {

            css::uno::Reference<css::document::XDocumentEventListener> xOwner(mxOwner.get(),

                css::uno::UNO_QUERY);

            if (xOwner.is())

                xOwner->disposing(rEvent);

        }

};

css::uno::Reference<css::ui::XContextChangeEventListener>

GetFirstListenerWith_Impl(

    css::uno::Reference<css::uno::XComponentContext> const & xComponentContext,

    css::uno::Reference<css::uno::XInterface> const& xEventFocus,

    std::function<bool (css::uno::Reference<css::ui::XContextChangeEventListener> const&)> const& rPredicate);

extern auto (*g_pGetMultiplexerListener)(

    css::uno::Reference<css::uno::XComponentContext> const & xComponentContext,

    css::uno::Reference<css::uno::XInterface> const&,

    std::function<bool (css::uno::Reference<css::ui::XContextChangeEventListener> const&)> const&)

    -> css::uno::Reference<css::ui::XContextChangeEventListener>;

} // namespace framework

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