/* -*- 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 "paralist.hxx"

#include <editeng/outliner.hxx>

#include <editeng/numdef.hxx>

#include <o3tl/safeint.hxx>

#include <osl/diagnose.h>

#include <sal/log.hxx>

#include <tools/debug.hxx>

#include <libxml/xmlwriter.h>

ParagraphData::ParagraphData()

: nDepth( -1 )

, mnNumberingStartValue( -1 )

, mbParaIsNumberingRestart( false )

{

}

bool ParagraphData::operator==(const ParagraphData& rCandidate) const

{

    return (nDepth == rCandidate.nDepth

        && mnNumberingStartValue == rCandidate.mnNumberingStartValue

        && mbParaIsNumberingRestart == rCandidate.mbParaIsNumberingRestart);

}

Paragraph::Paragraph( sal_Int16 nDDepth )

: aBulSize( -1, -1)

{

    DBG_ASSERT(  ( nDDepth >= -1 ) && ( nDDepth < SVX_MAX_NUM ), "Paragraph-CTOR: nDepth invalid!" );

    nDepth = nDDepth;

    nFlags = ParaFlag::NONE;

    bVisible = true;

}

Paragraph::Paragraph( const ParagraphData& rData )

: aBulSize( -1, -1)

, nFlags( ParaFlag::NONE )

, bVisible( true )

{

    nDepth = rData.nDepth;

    mnNumberingStartValue = rData.mnNumberingStartValue;

    mbParaIsNumberingRestart = rData.mbParaIsNumberingRestart;

}

Paragraph::~Paragraph()

{

}

void Paragraph::SetNumberingStartValue( sal_Int16 nNumberingStartValue )

{

    mnNumberingStartValue = nNumberingStartValue;

    if( mnNumberingStartValue != -1 )

        mbParaIsNumberingRestart = true;

}

void Paragraph::SetParaIsNumberingRestart( bool bParaIsNumberingRestart )

{

    mbParaIsNumberingRestart = bParaIsNumberingRestart;

    if( !mbParaIsNumberingRestart )

        mnNumberingStartValue = -1;

}

void Paragraph::dumpAsXml(xmlTextWriterPtr pWriter) const

{

    (void)xmlTextWriterStartElement(pWriter, BAD_CAST("Paragraph"));

    (void)xmlTextWriterWriteFormatAttribute(pWriter, BAD_CAST("nDepth"), "%" SAL_PRIdINT32, static_cast<sal_Int32>(nDepth));

    (void)xmlTextWriterWriteFormatAttribute(pWriter, BAD_CAST("mnNumberingStartValue"), "%" SAL_PRIdINT32, static_cast<sal_Int32>(mnNumberingStartValue));

    (void)xmlTextWriterWriteFormatAttribute(pWriter, BAD_CAST("mbParaIsNumberingRestart"), "%" SAL_PRIdINT32, static_cast<sal_Int32>(mbParaIsNumberingRestart));

    (void)xmlTextWriterEndElement(pWriter);

}

void ParagraphList::Clear()

{

    maEntries.clear();

}

void ParagraphList::Append( std::unique_ptr<Paragraph> pPara)

{

    SAL_WARN_IF( maEntries.size() >= EE_PARA_MAX, "editeng", "ParagraphList::Append - overflow");

    maEntries.push_back(std::move(pPara));

}

void ParagraphList::Insert( std::unique_ptr<Paragraph> pPara, sal_Int32 nAbsPos)

{

    SAL_WARN_IF( nAbsPos < 0 || (maEntries.size() < o3tl::make_unsigned(nAbsPos) && nAbsPos != EE_PARA_MAX),

            "editeng", "ParagraphList::Insert - bad insert position " << nAbsPos);

    SAL_WARN_IF( maEntries.size() >= EE_PARA_MAX, "editeng", "ParagraphList::Insert - overflow");

    if (nAbsPos < 0 || maEntries.size() <= o3tl::make_unsigned(nAbsPos))

        Append( std::move(pPara) );

    else

        maEntries.insert(maEntries.begin()+nAbsPos, std::move(pPara));

}

void ParagraphList::Remove( sal_Int32 nPara )

{

    if (nPara < 0 || maEntries.size() <= o3tl::make_unsigned(nPara))

    {

        SAL_WARN( "editeng", "ParagraphList::Remove - out of bounds " << nPara);

        return;

    }

    maEntries.erase(maEntries.begin() + nPara );

}

void ParagraphList::MoveParagraphs( sal_Int32 nStart, sal_Int32 nDest, sal_Int32 _nCount )

{

    OSL_ASSERT(o3tl::make_unsigned(nStart) < maEntries.size() && o3tl::make_unsigned(nDest) < maEntries.size());

    if ( (( nDest < nStart ) || ( nDest >= ( nStart + _nCount ) )) && nStart >= 0 && nDest >= 0 && _nCount >= 0 )

    {

        std::vector<std::unique_ptr<Paragraph>> aParas;

        auto iterBeg = maEntries.begin() + nStart;

        auto iterEnd = iterBeg + _nCount;

        for (auto it = iterBeg; it != iterEnd; ++it)

            aParas.push_back(std::move(*it));

        maEntries.erase(iterBeg,iterEnd);

        if ( nDest > nStart )

            nDest -= _nCount;

        for (auto & i : aParas)

        {

            maEntries.insert(maEntries.begin() + nDest, std::move(i));

            ++nDest;

        }

    }

    else

    {

        OSL_FAIL( "MoveParagraphs: Invalid Parameters" );

    }

}

bool ParagraphList::HasChildren( Paragraph const * pParagraph ) const

{

    sal_Int32 n = GetAbsPos( pParagraph );

    Paragraph* pNext = GetParagraph( ++n );

    return pNext && ( pNext->GetDepth() > pParagraph->GetDepth() );

}

bool ParagraphList::HasHiddenChildren( Paragraph const * pParagraph ) const

{

    sal_Int32 n = GetAbsPos( pParagraph );

    Paragraph* pNext = GetParagraph( ++n );

    return pNext && ( pNext->GetDepth() > pParagraph->GetDepth() ) && !pNext->IsVisible();

}

bool ParagraphList::HasVisibleChildren( Paragraph const * pParagraph ) const

{

    sal_Int32 n = GetAbsPos( pParagraph );

    Paragraph* pNext = GetParagraph( ++n );

    return pNext && ( pNext->GetDepth() > pParagraph->GetDepth() ) && pNext->IsVisible();

}

sal_Int32 ParagraphList::GetChildCount( Paragraph const * pParent ) const

{

    sal_Int32 nChildCount = 0;

    sal_Int32 n = GetAbsPos( pParent );

    Paragraph* pPara = GetParagraph( ++n );

    while ( pPara && ( pPara->GetDepth() > pParent->GetDepth() ) )

    {

        nChildCount++;

        pPara = GetParagraph( ++n );

    }

    return nChildCount;

}

Paragraph* ParagraphList::GetParent( Paragraph const * pParagraph ) const

{

    sal_Int32 n = GetAbsPos( pParagraph );

    Paragraph* pPrev = GetParagraph( --n );

    while ( pPrev && ( pPrev->GetDepth() >= pParagraph->GetDepth() ) )

    {

        pPrev = GetParagraph( --n );

    }

    return pPrev;

}

void ParagraphList::Expand( Paragraph const * pParent )

{

    sal_Int32 nChildCount = GetChildCount( pParent );

    sal_Int32 nPos = GetAbsPos( pParent );

    for ( sal_Int32 n = 1; n <= nChildCount; n++  )

    {

        Paragraph* pPara = GetParagraph( nPos+n );

        if ( !( pPara->IsVisible() ) )

        {

            pPara->bVisible = true;

            aVisibleStateChangedHdl.Call( *pPara );

        }

    }

}

void ParagraphList::Collapse( Paragraph const * pParent )

{

    sal_Int32 nChildCount = GetChildCount( pParent );

    sal_Int32 nPos = GetAbsPos( pParent );

    for ( sal_Int32 n = 1; n <= nChildCount; n++  )

    {

        Paragraph* pPara = GetParagraph( nPos+n );

        if ( pPara->IsVisible() )

        {

            pPara->bVisible = false;

            aVisibleStateChangedHdl.Call( *pPara );

        }

    }

}

sal_Int32 ParagraphList::GetAbsPos( Paragraph const * pParent ) const

{

    sal_Int32 pos = 0;

    for (auto const& entry : maEntries)

    {

        if (entry.get() == pParent)

            return pos;

        ++pos;

    }

    return EE_PARA_MAX;

}

void ParagraphList::dumpAsXml(xmlTextWriterPtr pWriter) const

{

    (void)xmlTextWriterStartElement(pWriter, BAD_CAST("ParagraphList"));

    for (auto const & pParagraph : maEntries)

        pParagraph->dumpAsXml(pWriter);

    (void)xmlTextWriterEndElement(pWriter);

}

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