/* -*- 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 <wrtsh.hxx>

#include <LibreOfficeKit/LibreOfficeKitEnums.h>

// Private methods, which move the cursor over search.

// The removal of the selection must be made on the level above.

// The beginning of a word is the follow of a

// non-delimiter to delimiter. Furthermore, the follow of

// non-sentence separators on sentence separator.

// The begin of paragraph is also the word beginning.

void SwWrtShell::SttWrd()

{

    if ( IsSttPara() )

        return;

        // Create temporary cursor without selection.

    Push();

    ClearMark();

    if( !GoStartWord() )

            // not found --> go to the beginning of the paragraph.

        SwCursorShell::MovePara( GoCurrPara, fnParaStart );

    ClearMark();

        // If Mark was previously set, summarize.

    Combine();

}

// The end of a word is the follow of separator to nonseparator.

// The end of a word is also the sequence of word separators to

// punctuation marks.

// The end of a paragraph is also the end of a word.

void SwWrtShell::EndWrd()

{

    if ( IsEndWrd() )

        return;

        // Create temporary cursor without selection.

    Push();

    ClearMark();

    if( !GoEndWord() )

            // not found --> go to the end of the paragraph.

        SwCursorShell::MovePara(GoCurrPara, fnParaEnd);

    ClearMark();

        // If Mark was previously set, summarize.

    Combine();

}

bool SwWrtShell::NxtWrd_()

{

    bool bRet = false;

    while( IsEndPara() )               // If already at the end, then the next???

    {

        if(!SwCursorShell::Right(1,SwCursorSkipMode::Chars))  // Document - end ??

        {

            Pop(SwCursorShell::PopMode::DeleteCurrent);

            return bRet;

        }

        bRet = IsStartWord();

    }

    Push();

    ClearMark();

    while( !bRet )

    {

        if( !GoNextWord() )

        {

            if( (!IsEndPara() && !SwCursorShell::MovePara( GoCurrPara, fnParaEnd ) )

                || !SwCursorShell::Right(1,SwCursorSkipMode::Chars) )

                break;

            bRet = IsStartWord();

        }

        else

            bRet = true;

    }

    ClearMark();

    Combine();

    return bRet;

}

bool SwWrtShell::PrvWrd_()

{

    bool bRet = false;

    while( IsSttPara() )

    {                            // if already at the beginning, then the next???

        if(!SwCursorShell::Left(1,SwCursorSkipMode::Chars))

        {                        // Document - beginning ??

            Pop(SwCursorShell::PopMode::DeleteCurrent);

            return bRet;

        }

        bRet = IsStartWord() || IsEndPara();

    }

    Push();

    ClearMark();

    while( !bRet )

    {

        if( !GoPrevWord() )

        {

            if( (!IsSttPara() && !SwCursorShell::MovePara( GoCurrPara, fnParaStart ) )

                || !SwCursorShell::Left(1,SwCursorSkipMode::Chars) )

                break;

            bRet = IsStartWord();

        }

        else

            bRet = true;

    }

    ClearMark();

    Combine();

    return bRet;

}

// #i92468#

// method code of <SwWrtShell::NxtWrd_()> before fix for issue i72162

bool SwWrtShell::NxtWrdForDelete()

{

    if ( IsEndPara() )

    {

        if ( !SwCursorShell::Right(1,SwCursorSkipMode::Chars) )

        {

            Pop(SwCursorShell::PopMode::DeleteCurrent);

            return false;

        }

        return true;

    }

    Push();

    ClearMark();

    if ( !GoNextWord() )

    {

        SwCursorShell::MovePara( GoCurrPara, fnParaEnd );

    }

    ClearMark();

    Combine();

    return true;

}

// method code of <SwWrtShell::PrvWrd_()> before fix for issue i72162

bool SwWrtShell::PrvWrdForDelete()

{

    if ( IsSttPara() )

    {

        if ( !SwCursorShell::Left(1,SwCursorSkipMode::Chars) )

        {

            Pop(SwCursorShell::PopMode::DeleteCurrent);

            return false;

        }

        return true;

    }

    Push();

    ClearMark();

    if( !GoPrevWord() )

    {

        SwCursorShell::MovePara( GoCurrPara, fnParaStart );

    }

    ClearMark();

    Combine();

    return true;

}

bool SwWrtShell::FwdSentence_()

{

    Push();

    ClearMark();

    if(!SwCursorShell::Right(1,SwCursorSkipMode::Chars))

    {

        Pop(SwCursorShell::PopMode::DeleteCurrent);

        return false;

    }

    if( !GoNextSentence() && !IsEndPara() )

        SwCursorShell::MovePara(GoCurrPara, fnParaEnd);

    ClearMark();

    Combine();

    return true;

}

bool SwWrtShell::BwdSentence_()

{

    Push();

    ClearMark();

    if(!SwCursorShell::Left(1,SwCursorSkipMode::Chars))

    {

        Pop(SwCursorShell::PopMode::DeleteCurrent);

        return false;

    }

    if( !GoStartSentence()  && !IsSttPara() )

            // not found --> go to the beginning of the paragraph

        SwCursorShell::MovePara( GoCurrPara, fnParaStart );

    ClearMark();

    Combine();

    return true;

}

bool SwWrtShell::FwdPara_()

{

    Push();

    ClearMark();

    bool bRet = SwCursorShell::MovePara(GoNextPara, fnParaStart);

    ClearMark();

    Combine();

    return bRet;

}

bool SwWrtShell::BwdPara_()

{

    Push();

    ClearMark();

    bool bRet = SwCursorShell::MovePara(GoPrevPara, fnParaStart);

    if ( !bRet && !IsSttOfPara() )

    {

        SttPara();

    }

    ClearMark();

    Combine();

    return bRet;

}

std::optional<OString> SwWrtShell::getLOKPayload(int nType, int nViewId) const

{

    switch(nType)

    {

        case LOK_CALLBACK_INVALIDATE_VISIBLE_CURSOR:

        case LOK_CALLBACK_INVALIDATE_VIEW_CURSOR:

            return GetVisibleCursor()->getLOKPayload(nType, nViewId);

        case LOK_CALLBACK_TEXT_SELECTION:

        case LOK_CALLBACK_TEXT_SELECTION_START:

        case LOK_CALLBACK_TEXT_SELECTION_END:

        case LOK_CALLBACK_TEXT_VIEW_SELECTION:

            return GetCursor_()->getLOKPayload(nType, nViewId);

    }

    abort();

}

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