Quelle  tabfrm.cxx   Sprache: C

/* -*- 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 <config_wasm_strip.h>

#include <bodyfrm.hxx>
#include <pagefrm.hxx>
#include <rootfrm.hxx>
#include <IDocumentFieldsAccess.hxx>
#include <IDocumentRedlineAccess.hxx>
#include <viewimp.hxx>
#include <fesh.hxx>
#include <swtable.hxx>
#include <deletelistener.hxx>
#include <dflyobj.hxx>
#include <anchoreddrawobject.hxx>
#include <fmtanchr.hxx>
#include <viewopt.hxx>
#include <hints.hxx>
#include <dbg_lay.hxx>
#include <ftnidx.hxx>
#include <svl/itemiter.hxx>
#include <editeng/keepitem.hxx>
#include <editeng/ulspitem.hxx>
#include <editeng/brushitem.hxx>
#include <editeng/boxitem.hxx>
#include <basegfx/range/b1drange.hxx>
#include <fmtlsplt.hxx>
#include <fmtrowsplt.hxx>
#include <fmtsrnd.hxx>
#include <fmtornt.hxx>
#include <fmtpdsc.hxx>
#include <fmtfsize.hxx>
#include <swtblfmt.hxx>
#include <tabfrm.hxx>
#include <rowfrm.hxx>
#include <cellfrm.hxx>
#include <flyfrms.hxx>
#include <txtfrm.hxx>
#include <ftnfrm.hxx>
#include <notxtfrm.hxx>
#include <htmltbl.hxx>
#include <sectfrm.hxx>
#include <fmtfollowtextflow.hxx>
#include <sortedobjs.hxx>
#include <objectformatter.hxx>
#include <layouter.hxx>
#include <calbck.hxx>
#include <DocumentSettingManager.hxx>
#include <sal/log.hxx>
#include <osl/diagnose.h>
#include <frmatr.hxx>
#include <frmtool.hxx>
#include <ndtxt.hxx>
#include <frameformats.hxx>

using namespace ::com::sun::star;

SwTabFrame::SwTabFrame( SwTable &rTab, SwFrame* pSib )
    : SwLayoutFrame( rTab.GetFrameFormat(), pSib )
    , SwFlowFrame( static_cast<SwFrame&>(*this) )
    , m_pTable( &rTab )
    , m_bComplete(false)
    , m_bCalcLowers(false)
    , m_bLowersFormatted(false)
    , m_bLockBackMove(false)
    , m_bWantBackMove(false)
    , m_bResizeHTMLTable(false)
    , m_bONECalcLowers(false)
    , m_bHasFollowFlowLine(false)
    , m_bIsRebuildLastLine(false)
    , m_bRestrictTableGrowth(false)
    , m_bRemoveFollowFlowLinePending(false)
    , m_bConsiderObjsForMinCellHeight(true)
    , m_bObjsDoesFit(true)
    , m_bInRecalcLowerRow(false)
{
    mbFixSize = false;     //Don't fall for import filter again.
    mnFrameType = SwFrameType::Tab;

    //Create the lines and insert them.
    const SwTableLines &rLines = rTab.GetTabLines();
    SwFrame *pTmpPrev = nullptr;
    bool bHiddenRedlines = getRootFrame()->IsHideRedlines() &&
        !GetFormat()->GetDoc().getIDocumentRedlineAccess().GetRedlineTable().empty();
    SwRedlineTable::size_type nRedlinePos = 0;
    for ( size_t i = 0; i < rLines.size(); ++i )
    {
        // skip lines deleted with track changes
        if ( bHiddenRedlines && rLines[i]->IsDeleted(nRedlinePos) )
            continue;

        SwRowFrame *pNew = new SwRowFrame( *rLines[i], this );
        if( pNew->Lower() )
        {
            pNew->InsertBehind( this, pTmpPrev );
            pTmpPrev = pNew;
        }
        else
            SwFrame::DestroyFrame(pNew);
    }
    SwFrame* pLower = Lower();
    OSL_ENSURE( pLower && pLower->IsRowFrame(), "SwTabFrame::SwTabFrame: No rows." );
}

SwTabFrame::SwTabFrame( SwTabFrame &rTab )
    : SwLayoutFrame( rTab.GetFormat(), &rTab )
    , SwFlowFrame( static_cast<SwFrame&>(*this) )
    , m_pTable( rTab.GetTable() )
    , m_bComplete(false)
    , m_bCalcLowers(false)
    , m_bLowersFormatted(false)
    , m_bLockBackMove(false)
    , m_bWantBackMove(false)
    , m_bResizeHTMLTable(false)
    , m_bONECalcLowers(false)
    , m_bHasFollowFlowLine(false)
    , m_bIsRebuildLastLine(false)
    , m_bRestrictTableGrowth(false)
    , m_bRemoveFollowFlowLinePending(false)
    , m_bConsiderObjsForMinCellHeight(true)
    , m_bObjsDoesFit(true)
    , m_bInRecalcLowerRow(false)
{
    mbFixSize = false;     //Don't fall for import filter again.
    mnFrameType = SwFrameType::Tab;

    SetFollow( rTab.GetFollow() );
    rTab.SetFollow( this );
}

void SwTabFrame::DestroyImpl()
{
    // There is some terrible code in fetab.cxx, that
    // caches pointers to SwTabFrames.
    ::ClearFEShellTabCols(GetFormat()->GetDoc(), this);

    SwLayoutFrame::DestroyImpl();
}

SwTabFrame::~SwTabFrame()
{
}

void SwTabFrame::JoinAndDelFollows()
{
    SwTabFrame *pFoll = GetFollow();
    if ( pFoll->HasFollow() )
        pFoll->JoinAndDelFollows();
    pFoll->Cut();
    SetFollow( pFoll->GetFollow() );
    SwFrame::DestroyFrame(pFoll);
}

void SwTabFrame::RegistFlys()
{
    SwFrame* pLower = Lower();
    OSL_ENSURE( pLower && pLower->IsRowFrame(), "No rows." );

    SwPageFrame *pPage = FindPageFrame();
    if ( pPage )
    {
        SwRowFrame *pRow = static_cast<SwRowFrame*>(pLower);
        do
        {
            pRow->RegistFlys( pPage );
            pRow = static_cast<SwRowFrame*>(pRow->GetNext());
        } while ( pRow );
    }
}

static void InvalidateVertOrientCells(SwRowFrame & rRow)
{
    for (SwFrame * pLower{rRow.Lower()}; pLower != nullptr; pLower = pLower->GetNext())
    {
        SwCellFrame * pCell{static_cast<SwCellFrame *>(pLower)};
        if (pCell->GetLayoutRowSpan() != 1)
        {
            pCell = const_cast<SwCellFrame *>(&pCell->FindStartEndOfRowSpanCell(true));
        }
        if (pCell->GetFormat()->GetVertOrient().GetVertOrient() != text::VertOrientation::NONE)
        {   // tdf#159029 force repositioning of content in cell because it
            pCell->InvalidatePrt(); // was disabled by SetRebuildLastLine()
        }
    }
}

static void SwInvalidateAll( SwFrame *pFrame, tools::Long nBottom );
static void lcl_RecalcRow( SwRowFrame& rRow, tools::Long nBottom );
static bool lcl_ArrangeLowers( SwLayoutFrame *pLay, tools::Long lYStart, bool bInva );
// #i26945# - add parameter <_bOnlyRowsAndCells> to control
// that only row and cell frames are formatted.
static bool lcl_InnerCalcLayout( SwFrame *pFrame,
                                      tools::Long nBottom,
                                      bool _bOnlyRowsAndCells = false );
// OD 2004-02-18 #106629# - correct type of 1st parameter
// #i26945# - add parameter <_bConsiderObjs> in order to
// control, if floating screen objects have to be considered for the minimal
// cell height.
static SwTwips lcl_CalcMinRowHeight( const SwRowFrame *pRow,
                                     const bool _bConsiderObjs );
static sal_uInt16 lcl_GetTopSpace( const SwRowFrame& rRow );
static sal_uInt16 lcl_GetBottomLineDist(const SwRowFrame& rRow);

static SwTwips lcl_CalcTopAndBottomMargin( const SwLayoutFrame&, const SwBorderAttrs& );

static SwTwips lcl_calcHeightOfRowBeforeThisFrame(const SwRowFrame& rRow);

static SwTwips lcl_GetHeightOfRows( const SwFrame* pStart, tools::Long nCount )
{
    if ( !nCount || !pStart)
        return 0;

    // There are moments when some rows have correct size, but wrong position: e.g., when a merged
    // cell is split, the 0-height follow of the previous row is inserted, and arrives here with a
    // correct height, but positioned at [0, 0]; the following rows have correct position (offset
    // to the new page's starting Y coordinate). This disallows to simplify the height calculation
    // to just difference between top row's top and bottom row's bottom.
    SwTwips nRet = 0;
    SwRectFnSet aRectFnSet(pStart);
    while (pStart && nCount > 0)
    {
        nRet += aRectFnSet.GetHeight(pStart->getFrameArea());
        pStart = pStart->GetNext();
        --nCount;
    }

    return nRet;
}

// Local helper function to insert a new follow flow line
static SwRowFrame* lcl_InsertNewFollowFlowLine( SwTabFrame& rTab, const SwFrame&&nbsp;rTmpRow, bool bRowSpanLine )
{
    OSL_ENSURE( rTmpRow.IsRowFrame(), "No row frame to copy for FollowFlowLine" );
    const SwRowFrame& rRow = static_cast<const SwRowFrame&>(rTmpRow);

    rTab.SetFollowFlowLine( true );
    SwRowFrame *pFollowFlowLine = new SwRowFrame(*rRow.GetTabLine(), &rTab, false );
    pFollowFlowLine->SetRowSpanLine( bRowSpanLine );
    SwFrame* pFirstRow = rTab.GetFollow()->GetFirstNonHeadlineRow();
    pFollowFlowLine->InsertBefore( rTab.GetFollow(), pFirstRow );
    return pFollowFlowLine;
}

// #i26945# - local helper function to invalidate all lower
// objects. By parameter <_bMoveObjsOutOfRange> it can be controlled, if
// additionally the objects are moved 'out of range'.
static void lcl_InvalidateLowerObjs( SwLayoutFrame& _rLayoutFrame,
                              const bool _bMoveObjsOutOfRange = false,
                              SwPageFrame* _pPageFrame = nullptr )
{
    // determine page frame, if needed
    if ( !_pPageFrame )
    {
        _pPageFrame = _rLayoutFrame.FindPageFrame();
        OSL_ENSURE( _pPageFrame,
                " - missing page frame -> no move of lower objects out of range" );
        if ( !_pPageFrame )
        {
            return;
        }
    }

    // loop on lower frames
    SwFrame* pLowerFrame = _rLayoutFrame.Lower();
    while ( pLowerFrame )
    {
        if ( pLowerFrame->IsLayoutFrame() )
        {
            ::lcl_InvalidateLowerObjs( *static_cast<SwLayoutFrame*>(pLowerFrame),
                                       _bMoveObjsOutOfRange, _pPageFrame );
        }
        if ( pLowerFrame->GetDrawObjs() )
        {
            for (size_t i = 0, nCount = pLowerFrame->GetDrawObjs()->size(); i < nCount; ++i)
            {
                SwAnchoredObject* pAnchoredObj = (*pLowerFrame->GetDrawObjs())[i];

                // invalidate position of anchored object
                pAnchoredObj->SetTmpConsiderWrapInfluence( false );
                pAnchoredObj->SetConsiderForTextWrap( false );
                pAnchoredObj->UnlockPosition();
                pAnchoredObj->InvalidateObjPos();

                SwFlyFrame *pFly = pAnchoredObj->DynCastFlyFrame();

                // move anchored object 'out of range'
                if ( _bMoveObjsOutOfRange )
                {
                    // indicate, that positioning is progress to avoid
                    // modification of the anchored object resp. it's attributes
                    // due to the movement
                    SwObjPositioningInProgress aObjPosInProgress( *pAnchoredObj );
                    pAnchoredObj->SetObjLeft( _pPageFrame->getFrameArea().Right() );
                    // #115759# - reset character rectangle,
                    // top of line and relative position in order to assure,
                    // that anchored object is correctly positioned.
                    pAnchoredObj->ClearCharRectAndTopOfLine();
                    pAnchoredObj->SetCurrRelPos( Point( 0, 0 ) );
                    const SwFrameFormat* pObjFormat = pAnchoredObj->GetFrameFormat();
                    if (pObjFormat->GetAnchor().GetAnchorId() == RndStdIds::FLY_AS_CHAR)
                    {
                        pAnchoredObj->AnchorFrame()
                                ->Prepare( PrepareHint::FlyFrameAttributesChanged,
                                           pObjFormat );
                    }
                    if ( pFly != nullptr )
                    {
                        pFly->GetVirtDrawObj()->SetBoundAndSnapRectsDirty();
                        pFly->GetVirtDrawObj()->SetChanged();
                    }
                }

                // If anchored object is a fly frame, invalidate its lower objects
                if ( pFly != nullptr )
                {
                    ::lcl_InvalidateLowerObjs( *pFly, _bMoveObjsOutOfRange, _pPageFrame );
                }
            }
        }
        pLowerFrame = pLowerFrame->GetNext();
    }
}

// Local helper function to shrink all lowers of pRow to 0 height
static void lcl_ShrinkCellsAndAllContent( SwRowFrame& rRow )
{
    SwCellFrame* pCurrMasterCell = static_cast<SwCellFrame*>(rRow.Lower());
    SwRectFnSet aRectFnSet(pCurrMasterCell);

    bool bAllCellsCollapsed = true;
    while ( pCurrMasterCell )
    {
        // NEW TABLES
        SwCellFrame& rToAdjust = pCurrMasterCell->GetTabBox()->getRowSpan() < 1 ?
                               const_cast<SwCellFrame&>(pCurrMasterCell->FindStartEndOfRowSpanCell( true )) :
                               *pCurrMasterCell;

        // #i26945#
        // all lowers should have the correct position
        lcl_ArrangeLowers( &rToAdjust,
                           aRectFnSet.GetPrtTop(rToAdjust),
                           false );
        // TODO: Optimize number of frames which are set to 0 height
        // we have to start with the last lower frame, otherwise
        // the shrink will not shrink the current cell
        SwFrame* pTmp = rToAdjust.GetLastLower();
        bool bAllLowersCollapsed = true;

        if ( pTmp && pTmp->IsRowFrame() )
        {
            SwRowFrame* pTmpRow = static_cast<SwRowFrame*>(pTmp);
            lcl_ShrinkCellsAndAllContent( *pTmpRow );
        }
        else
        {
            // TODO: Optimize number of frames which are set to 0 height
            while ( pTmp )
            {
                // the frames have to be shrunk
                if ( pTmp->IsTabFrame() )
                {
                    SwRowFrame* pTmpRow = static_cast<SwRowFrame*>(static_cast<SwTabFrame*>(pTmp)->Lower());
                    bool bAllRowsCollapsed = true;

                    while ( pTmpRow )
                    {
                        lcl_ShrinkCellsAndAllContent( *pTmpRow );

                        if (aRectFnSet.GetHeight(pTmpRow->getFrameArea()) > 0)
                            bAllRowsCollapsed = false;

                        pTmpRow = static_cast<SwRowFrame*>(pTmpRow->GetNext());
                    }

                    if (bAllRowsCollapsed)
                    {
                        // All rows of this table have 0 height -> set height of the table itself as well.
                        SwFrameAreaDefinition::FrameAreaWriteAccess aFrm(*pTmp);
                        aRectFnSet.SetHeight(aFrm, 0);

                        SwFrameAreaDefinition::FramePrintAreaWriteAccess aPrt(*pTmp);
                        aRectFnSet.SetTop(aPrt, 0);
                        aRectFnSet.SetHeight(aPrt, 0);
                    }
                    else
                        bAllLowersCollapsed = false;
                }
                else
                {
                    pTmp->Shrink(aRectFnSet.GetHeight(pTmp->getFrameArea()));
                    SwFrameAreaDefinition::FramePrintAreaWriteAccess aPrt(*pTmp);
                    aRectFnSet.SetTop(aPrt, 0);
                    aRectFnSet.SetHeight(aPrt, 0);

                    if (aRectFnSet.GetHeight(pTmp->getFrameArea()) > 0)
                    {
                        bAllLowersCollapsed = false;
                    }
                }

                pTmp = pTmp->GetPrev();
            }

            // all lowers should have the correct position
            lcl_ArrangeLowers( &rToAdjust,
                               aRectFnSet.GetPrtTop(rToAdjust),
                               false );
        }

        if (bAllLowersCollapsed)
        {
            // All lower frame of this cell have 0 height -> set height of the cell itself as well.
            SwFrameAreaDefinition::FrameAreaWriteAccess aFrm(*pCurrMasterCell);
            aRectFnSet.SetHeight(aFrm, 0);

            SwFrameAreaDefinition::FramePrintAreaWriteAccess aPrt(*pCurrMasterCell);
            aRectFnSet.SetTop(aPrt, 0);
            aRectFnSet.SetHeight(aPrt, 0);
        }
        else
            bAllCellsCollapsed = false;

        pCurrMasterCell = static_cast<SwCellFrame*>(pCurrMasterCell->GetNext());
    }

    if (bAllCellsCollapsed)
    {
        // All cells have 0 height -> set height of row as well.
        SwFrameAreaDefinition::FrameAreaWriteAccess aFrm(rRow);
        aRectFnSet.SetHeight(aFrm, 0);

        SwFrameAreaDefinition::FramePrintAreaWriteAccess aPrt(rRow);
        aRectFnSet.SetTop(aPrt, 0);
        aRectFnSet.SetHeight(aPrt, 0);
    }
}

// Local helper function to move the content from rSourceLine to rDestLine
// The content is inserted behind the last content in the corresponding
// cell in rDestLine.
static void lcl_MoveRowContent( SwRowFrame& rSourceLine, SwRowFrame& rDestLine )
{
    SwCellFrame* pCurrDestCell = static_cast<SwCellFrame*>(rDestLine.Lower());
    SwCellFrame* pCurrSourceCell = static_cast<SwCellFrame*>(rSourceLine.Lower());

    // Move content of follow cells into master cells
    while ( pCurrSourceCell )
    {
        assert(pCurrDestCell);
        SwFrame* pLower = pCurrSourceCell->Lower();
        if ( pLower && pLower->IsRowFrame() )
        {
            SwRowFrame* pTmpSourceRow = static_cast<SwRowFrame*>(pLower);
            while ( pTmpSourceRow )
            {
                // #125926# Attention! It is possible,
                // that pTmpSourceRow->IsFollowFlowRow() but pTmpDestRow
                // cannot be found. In this case, we have to move the complete
                // row.
                SwRowFrame* pTmpDestRow = static_cast<SwRowFrame*>(pCurrDestCell->Lower());

                if ( pTmpSourceRow->IsFollowFlowRow() && pTmpDestRow )
                {
                    // move content from follow flow row to pTmpDestRow:
                    while ( pTmpDestRow->GetNext() )
                        pTmpDestRow = static_cast<SwRowFrame*>(pTmpDestRow->GetNext());

                    assert(pTmpDestRow->GetFollowRow() == pTmpSourceRow);

                    lcl_MoveRowContent( *pTmpSourceRow, *pTmpDestRow );
                    pTmpDestRow->SetFollowRow( pTmpSourceRow->GetFollowRow() );
                    pTmpSourceRow->RemoveFromLayout();
                    SwFrame::DestroyFrame(pTmpSourceRow);
                }
                else
                {
                    // move complete row:
                    pTmpSourceRow->RemoveFromLayout();
                    pTmpSourceRow->InsertBefore( pCurrDestCell, nullptr );
                }

                // RemoveFromLayout invalidates Lower() so it must be refetched
                pTmpSourceRow = static_cast<SwRowFrame*>(pCurrSourceCell->Lower());
            }
        }
        else
        {
            SwFrame *pTmp = ::SaveContent( pCurrSourceCell );
            if ( pTmp )
            {
                // NEW TABLES
                SwCellFrame* pDestCell = pCurrDestCell;
                if ( pDestCell->GetTabBox()->getRowSpan() < 1 )
                    pDestCell = & const_cast<SwCellFrame&>(pDestCell->FindStartEndOfRowSpanCell( true ));

                // Find last content
                SwFrame* pFrame = pDestCell->GetLastLower();
                ::RestoreContent( pTmp, pDestCell, pFrame );
            }
        }
        pCurrDestCell = static_cast<SwCellFrame*>(pCurrDestCell->GetNext());
        pCurrSourceCell = static_cast<SwCellFrame*>(pCurrSourceCell->GetNext());
    }
}

// Local helper function to move all footnotes in rRowFrame from
// the footnote boss of rSource to the footnote boss of rDest.
static void lcl_MoveFootnotes( SwTabFrame& rSource, SwTabFrame& rDest, SwLayoutFrame& rRowFrame )
{
    if ( !rSource.GetFormat()->GetDoc().GetFootnoteIdxs().empty() )
    {
        SwFootnoteBossFrame* pOldBoss = rSource.FindFootnoteBossFrame( true );
        SwFootnoteBossFrame* pNewBoss = rDest.FindFootnoteBossFrame( true );
        rRowFrame.MoveLowerFootnotes( nullptr, pOldBoss, pNewBoss, true );
    }
}

// Local helper function to handle nested table cells before the split process
static void lcl_PreprocessRowsInCells( SwTabFrame& rTab, SwRowFrame& rLastLine,
                                SwRowFrame& rFollowFlowLine, SwTwips nRemain )
{
    SwCellFrame* pCurrLastLineCell = static_cast<SwCellFrame*>(rLastLine.Lower());
    SwCellFrame* pCurrFollowFlowLineCell = static_cast<SwCellFrame*>(rFollowFlowLine.Lower());

    SwRectFnSet aRectFnSet(pCurrLastLineCell);

    // Move content of follow cells into master cells
    while ( pCurrLastLineCell )
    {
        if ( pCurrLastLineCell->Lower() && pCurrLastLineCell->Lower()->IsRowFrame() )
        {
            SwTwips nTmpCut = nRemain;
            SwRowFrame* pTmpLastLineRow = static_cast<SwRowFrame*>(pCurrLastLineCell->Lower());

            // #i26945#
            SwTwips nCurrentHeight =
                    lcl_CalcMinRowHeight( pTmpLastLineRow,
                                          rTab.IsConsiderObjsForMinCellHeight() );
            while ( pTmpLastLineRow->GetNext() && nTmpCut > nCurrentHeight )
            {
                nTmpCut -= nCurrentHeight;
                pTmpLastLineRow = static_cast<SwRowFrame*>(pTmpLastLineRow->GetNext());
                // #i26945#
                nCurrentHeight =
                    lcl_CalcMinRowHeight( pTmpLastLineRow,
                                          rTab.IsConsiderObjsForMinCellHeight() );
            }

            // pTmpLastLineRow does not fit to the line or it is the last line
            // Check if we can move pTmpLastLineRow to the follow table,
            // or if we have to split the line:
            bool bTableLayoutTooComplex = false;
            tools::Long nMinHeight = 0;

            // We have to take into account:
            // 1. The fixed height of the row
            // 2. The borders of the cells inside the row
            // 3. The minimum height of the row
            if ( pTmpLastLineRow->HasFixSize() )
                nMinHeight = aRectFnSet.GetHeight(pTmpLastLineRow->getFrameArea());
            else
            {
                {
                    const SwFormatFrameSize &rSz = pTmpLastLineRow->GetFormat()->GetFrameSize();
                    if ( rSz.GetHeightSizeType() == SwFrameSize::Minimum )
                        nMinHeight = rSz.GetHeight() - lcl_calcHeightOfRowBeforeThisFrame(*pTmpLastLineRow);
                }

                SwFrame* pCell = pTmpLastLineRow->Lower();
                while ( pCell )
                {
                    SwFrame* pCellLower = static_cast<SwCellFrame*>(pCell)->Lower();
                    if ( pCellLower && pCellLower->IsRowFrame() )
                    {
                        bTableLayoutTooComplex = true;
                        break;
                    }

                    SwBorderAttrAccess aAccess( SwFrame::GetCache(), pCell );
                    const SwBorderAttrs &rAttrs = *aAccess.Get();
                    nMinHeight = std::max( nMinHeight, tools::Long(lcl_CalcTopAndBottomMargin( *static_cast<SwLayoutFrame*>(pCell), rAttrs )) );
                    pCell = pCell->GetNext();
                }
            }

            // 1. Case:
            // The line completely fits into the master table.
            // Nevertheless, we build a follow (otherwise painting problems
            // with empty cell).

            // 2. Case:
            // The line has to be split, the minimum height still fits into
            // the master table, and the table structure is not too complex.
            if ( nTmpCut > nCurrentHeight ||
                 ( pTmpLastLineRow->IsRowSplitAllowed() &&
                  !bTableLayoutTooComplex && nMinHeight < nTmpCut ) )
            {
                // The line has to be split:
                SwRowFrame* pNewRow = new SwRowFrame( *pTmpLastLineRow->GetTabLine(), &rTab, false );
                pNewRow->SetFollowFlowRow( true );
                pNewRow->SetFollowRow( pTmpLastLineRow->GetFollowRow() );
                pTmpLastLineRow->SetFollowRow( pNewRow );
                pNewRow->InsertBehind( pCurrFollowFlowLineCell, nullptr );
                pTmpLastLineRow = static_cast<SwRowFrame*>(pTmpLastLineRow->GetNext());
            }

            // The following lines have to be moved:
            while ( pTmpLastLineRow )
            {
                SwRowFrame* pTmp = static_cast<SwRowFrame*>(pTmpLastLineRow->GetNext());
                lcl_MoveFootnotes( rTab, *rTab.GetFollow(), *pTmpLastLineRow );
                pTmpLastLineRow->RemoveFromLayout();
                pTmpLastLineRow->InsertBefore( pCurrFollowFlowLineCell, nullptr );
                pTmpLastLineRow->Shrink( aRectFnSet.GetHeight(pTmpLastLineRow->getFrameArea()) );
                pCurrFollowFlowLineCell->Grow( aRectFnSet.GetHeight(pTmpLastLineRow->getFrameArea()) );
                pTmpLastLineRow = pTmp;
            }
        }

        pCurrLastLineCell = static_cast<SwCellFrame*>(pCurrLastLineCell->GetNext());
        pCurrFollowFlowLineCell = static_cast<SwCellFrame*>(pCurrFollowFlowLineCell->GetNext());
    }
}

// Local helper function to handle nested table cells after the split process
static void lcl_PostprocessRowsInCells( SwTabFrame& rTab, SwRowFrame& rLastLine )
{
    SwCellFrame* pCurrMasterCell = static_cast<SwCellFrame*>(rLastLine.Lower());
    while ( pCurrMasterCell )
    {
        SwFrame* pLower = pCurrMasterCell->Lower();
        if ( pLower && pLower->IsRowFrame() )
        {
            SwRowFrame* pRowFrame = static_cast<SwRowFrame*>(pCurrMasterCell->GetLastLower());

            if ( nullptr != pRowFrame->GetPrev() && !pRowFrame->ContainsContent() )
            {
                OSL_ENSURE( pRowFrame->GetFollowRow(), "Deleting row frame without follow" );

                // The footnotes have to be moved:
                lcl_MoveFootnotes( rTab, *rTab.GetFollow(), *pRowFrame );
                pRowFrame->Cut();
                SwRowFrame* pFollowRow = pRowFrame->GetFollowRow();
                pRowFrame->Paste( pFollowRow->GetUpper(), pFollowRow );
                pRowFrame->SetFollowRow( pFollowRow->GetFollowRow() );
                lcl_MoveRowContent( *pFollowRow, *pRowFrame );
                pFollowRow->Cut();
                SwFrame::DestroyFrame(pFollowRow);
                ::SwInvalidateAll( pCurrMasterCell, LONG_MAX );
            }
        }

        pCurrMasterCell = static_cast<SwCellFrame*>(pCurrMasterCell->GetNext());
    }
}

// Local helper function to re-calculate the split line.
inline void TableSplitRecalcLock( SwFlowFrame *pTab ) { pTab->LockJoin(); }
inline void TableSplitRecalcUnlock( SwFlowFrame *pTab ) { pTab->UnlockJoin(); }

static bool lcl_RecalcSplitLine( SwRowFrame& rLastLine, SwRowFrame& rFollowLine,
                          SwTwips nRemainingSpaceForLastRow, SwTwips nAlreadyFree,
                          bool & rIsFootnoteGrowth)
{
    bool bRet = true;

    vcl::RenderContext* pRenderContext = rLastLine.getRootFrame()->GetCurrShell()->GetOut();
    SwTabFrame& rTab = static_cast<SwTabFrame&>(*rLastLine.GetUpper());
    SwRectFnSet aRectFnSet(rTab.GetUpper());
    SwTwips nCurLastLineHeight = aRectFnSet.GetHeight(rLastLine.getFrameArea());

    SwTwips nFootnoteHeight(0);
    if (SwFootnoteBossFrame const*const pBoss = rTab.FindFootnoteBossFrame())
    {
        if (SwFootnoteContFrame const*const pCont = pBoss->FindFootnoteCont())
        {
            for (SwFootnoteFrame const* pFootnote = static_cast<SwFootnoteFrame const*>(pCont->Lower());
                 pFootnote != nullptr;
                 pFootnote = static_cast<SwFootnoteFrame const*>(pFootnote->GetNext()))
            {
                SwContentFrame const*const pAnchor = pFootnote->GetRef();
                SwTabFrame const* pTab = pAnchor->FindTabFrame();
                if (pTab)
                {
                    while (pTab->GetUpper()->IsInTab())
                    {
                        pTab = pTab->GetUpper()->FindTabFrame();
                    }
                    // TODO currently do this only for top-level tables?
                    // otherwise would need to check rTab's follow and any upper table's follow?
                    if (pTab == &rTab)
                    {
                        nFootnoteHeight += aRectFnSet.GetHeight(pFootnote->getFrameArea());
                    }
                }
            }
        }
    }

    // If there are nested cells in rLastLine, the recalculation of the last
    // line needs some preprocessing.
    lcl_PreprocessRowsInCells( rTab, rLastLine, rFollowLine, nRemainingSpaceForLastRow );

    // Here the recalculation process starts:
    rTab.SetRebuildLastLine( true );
    // #i26945#
    rTab.SetDoesObjsFit( true );

    // #i26945# - invalidate and move floating screen
    // objects 'out of range'
    ::lcl_InvalidateLowerObjs( rLastLine, true );

    // manipulate row and cell sizes

    // #i26945# - Do *not* consider floating screen objects
    // for the minimal cell height.
    rTab.SetConsiderObjsForMinCellHeight( false );
    ::lcl_ShrinkCellsAndAllContent( rLastLine );
    rTab.SetConsiderObjsForMinCellHeight( true );

    // invalidate last line
    ::SwInvalidateAll( &rLastLine, LONG_MAX );

    // Shrink the table to account for the shrunk last row, as well as lower rows
    // that had been moved to follow table in SwTabFrame::Split.
    // It will grow later when last line will recalc its height.
    rTab.Shrink(nAlreadyFree + nCurLastLineHeight - nRemainingSpaceForLastRow + 1);

    // Lock this tab frame and its follow
    bool bUnlockMaster = false;
    SwFlowFrame * pFollow = nullptr;
    SwTabFrame* pMaster = rTab.IsFollow() ? rTab.FindMaster() : nullptr;
    if ( pMaster && !pMaster->IsJoinLocked() )
    {
        bUnlockMaster = true;
        ::TableSplitRecalcLock( pMaster );
    }
    if ( !rTab.GetFollow()->IsJoinLocked() )
    {
        pFollow = rTab.GetFollow();
        ::TableSplitRecalcLock( pFollow );
    }

    bool bInSplit = rLastLine.IsInSplit();
    rLastLine.SetInSplit();

    // Do the recalculation
    lcl_RecalcRow( rLastLine, LONG_MAX );
    // #115759# - force a format of the last line in order to
    // get the correct height.
    rLastLine.InvalidateSize();
    rLastLine.Calc(pRenderContext);

    rLastLine.SetInSplit(bInSplit);

    // Unlock this tab frame and its follow
    if ( pFollow )
        ::TableSplitRecalcUnlock( pFollow );
    if ( bUnlockMaster )
        ::TableSplitRecalcUnlock( pMaster );

    // If there are nested cells in rLastLine, the recalculation of the last
    // line needs some postprocessing.
    lcl_PostprocessRowsInCells( rTab, rLastLine );

    // Do a couple of checks on the current situation.

    // If we are not happy with the current situation we return false.
    // This will start a new try to split the table, this time we do not
    // try to split the table rows.

    // 1. Check if table fits to its upper.
    // #i26945# - include check, if objects fit
    const SwTwips nDistanceToUpperPrtBottom =
        aRectFnSet.BottomDist(rTab.getFrameArea(), aRectFnSet.GetPrtBottom(*rTab.GetUpper()));
    // also check the footnote boss - it *may* be smaller than the upper now!
    const SwTwips nDistanceToFootnoteBodyPrtBottom =
        aRectFnSet.BottomDist(rTab.getFrameArea(), aRectFnSet.GetPrtBottom(*rTab.FindFootnoteBossFrame()->FindBodyCont()));
    // tdf#125685 ignore footnotes that are anchored in follow-table of this
    // table - if split is successful they move to the next page/column anyway
    assert(rTab.GetFollow() == rFollowLine.GetUpper());
    SwTwips nFollowFootnotes(0);
    // actually there should always be a boss frame, except if "this" isn't
    // connected to a page yet; not sure if that can happen
    if (SwFootnoteBossFrame const*const pBoss = rTab.FindFootnoteBossFrame())
    {
        if (SwFootnoteContFrame const*const pCont = pBoss->FindFootnoteCont())
        {
            for (SwFootnoteFrame const* pFootnote = static_cast<SwFootnoteFrame const*>(pCont->Lower());
                 pFootnote != nullptr;
                 pFootnote = static_cast<SwFootnoteFrame const*>(pFootnote->GetNext()))
            {
                SwContentFrame const*const pAnchor = pFootnote->GetRef();
                SwTabFrame const* pTab = pAnchor->FindTabFrame();
                if (pTab)
                {
                    while (pTab->GetUpper()->IsInTab())
                    {
                        pTab = pTab->GetUpper()->FindTabFrame();
                    }
                    // TODO currently do this only for top-level tables?
                    // otherwise would need to check rTab's follow and any upper table's follow?
                    if (pTab == rTab.GetFollow())
                    {
                        nFollowFootnotes += aRectFnSet.GetHeight(pFootnote->getFrameArea());
                    }
                    if (pTab == &rTab)
                    {
                        nFootnoteHeight -= aRectFnSet.GetHeight(pFootnote->getFrameArea());
                    }
                }
            }
            if (nFootnoteHeight < 0)
            {   // tdf#156724 footnotes have grown, try to split again
                rIsFootnoteGrowth = true;
            }
        }
    }
    if (nDistanceToUpperPrtBottom + nFollowFootnotes < 0 || !rTab.DoesObjsFit())
        bRet = false;

    // apparently checking nFootnoteHeight here does *not* guarantee that it fits into the body
    if (bRet && rTab.IsInDocBody()
        && nDistanceToFootnoteBodyPrtBottom + nFollowFootnotes < 0)
    {
        assert(rTab.GetUpper() != rTab.FindFootnoteBossFrame()->FindBodyCont());
        SAL_INFO("sw.layout", "SwTabFrame Split failed because of footnote growth");
        bRet = false; // tdf#160897
    }

    // 2. Check if each cell in the last line has at least one content frame.

    // Note: a FollowFlowRow may contains empty cells!
    if ( bRet )
    {
        if ( !rLastLine.IsInFollowFlowRow() )
        {
            SwCellFrame* pCurrMasterCell = static_cast<SwCellFrame*>(rLastLine.Lower());
            while ( pCurrMasterCell )
            {
                if ( !pCurrMasterCell->ContainsContent() && pCurrMasterCell->GetTabBox()->getRowSpan() >= 1 )
                {
                    bRet = false;
                    break;
                }
                pCurrMasterCell = static_cast<SwCellFrame*>(pCurrMasterCell->GetNext());
            }
        }
    }

    // 3. Check if last line does not contain any content:
    if ( bRet )
    {
        if ( !rLastLine.ContainsContent() )
        {
            bRet = false;
        }
    }

    // 4. Check if follow flow line does not contain content:
    if ( bRet )
    {
        if ( !rFollowLine.IsRowSpanLine() && !rFollowLine.ContainsContent() )
        {
            bRet = false;
        }
    }

    if ( bRet )
    {
        // Everything looks fine. Splitting seems to be successful. We invalidate
        // rFollowLine to force a new formatting.
        ::SwInvalidateAll( &rFollowLine, LONG_MAX );
        InvalidateVertOrientCells(rLastLine);
    }
    else
    {
        // Splitting the table row gave us an unexpected result.
        // Everything has to be prepared for a second try to split
        // the table, this time without splitting the row.
        ::SwInvalidateAll( &rLastLine, LONG_MAX );
    }

    rTab.SetRebuildLastLine( false );
    // #i26945#
    rTab.SetDoesObjsFit( true );

    return bRet;
}

// Sets the correct height for all spanned cells
static void lcl_AdjustRowSpanCells( SwRowFrame* pRow )
{
    SwRectFnSet aRectFnSet(pRow);
    SwCellFrame* pCellFrame = static_cast<SwCellFrame*>(pRow->GetLower());
    while ( pCellFrame )
    {
        const tools::Long nLayoutRowSpan = pCellFrame->GetLayoutRowSpan();
        if ( nLayoutRowSpan > 1 )
        {
            // calculate height of cell:
            const tools::Long nNewCellHeight = lcl_GetHeightOfRows( pRow, nLayoutRowSpan );
            const tools::Long nDiff = nNewCellHeight - aRectFnSet.GetHeight(pCellFrame->getFrameArea());

            if ( nDiff )
            {
                SwFrameAreaDefinition::FrameAreaWriteAccess aFrm(*pCellFrame);
                aRectFnSet.AddBottom(aFrm, nDiff);
            }
        }

        pCellFrame = static_cast<SwCellFrame*>(pCellFrame->GetNext());
    }
}

// Returns the maximum layout row span of the row
// Looking for the next row that contains no covered cells:
static tools::Long lcl_GetMaximumLayoutRowSpan( const SwRowFrame& rRow )
{
    tools::Long nRet = 1;

    const SwRowFrame* pCurrentRowFrame = static_cast<const SwRowFrame*>(rRow.GetNext());
    bool bNextRow = false;

    while ( pCurrentRowFrame )
    {
        // if there is any covered cell, we proceed to the next row frame
        const SwCellFrame* pLower = static_cast<const SwCellFrame*>( pCurrentRowFrame->Lower());
        while ( pLower )
        {
            if ( pLower->GetTabBox()->getRowSpan() < 0 )
            {
                ++nRet;
                bNextRow = true;
                break;
            }
            pLower = static_cast<const SwCellFrame*>(pLower->GetNext());
        }
        pCurrentRowFrame = bNextRow ?
                         static_cast<const SwRowFrame*>(pCurrentRowFrame->GetNext() ) :
                         nullptr;
    }

    return nRet;
}

// Function to remove the FollowFlowLine of rTab.
// The content of the FollowFlowLine is moved to the associated line in the
// master table.
bool SwTabFrame::RemoveFollowFlowLine()
{
    // find FollowFlowLine
    SwTabFrame *pFoll = GetFollow();
    SwRowFrame* pFollowFlowLine = pFoll ? pFoll->GetFirstNonHeadlineRow() : nullptr;

    // find last row in master
    SwFrame* pLastLine = GetLastLower();

    OSL_ENSURE( HasFollowFlowLine() &&
            pFollowFlowLine &&
            pLastLine, "There should be a flowline in the follow" );

    // #140081# Make code robust.
    if ( !pFollowFlowLine || !pLastLine )
        return true;
    if (pFollowFlowLine->IsDeleteForbidden())
    {
        SAL_WARN("sw.layout", "Cannot remove in-use Follow Flow Line");
        return false;
    }

    // We have to reset the flag here, because lcl_MoveRowContent
    // calls a GrowFrame(), which has a different behavior if
    // this flag is set.
    SetFollowFlowLine( false );

    // Move content
    lcl_MoveRowContent( *pFollowFlowLine, *static_cast<SwRowFrame*>(pLastLine) );

    // NEW TABLES
    // If a row span follow flow line is removed, we want to move the whole span
    // to the master:
    tools::Long nRowsToMove = lcl_GetMaximumLayoutRowSpan( *pFollowFlowLine );

    if ( nRowsToMove > 1 )
    {
        SwRectFnSet aRectFnSet(this);
        SwFrame* pRow = pFollowFlowLine->GetNext();
        SwFrame* pInsertBehind = GetLastLower();
        SwTwips nGrow = 0;

        while ( pRow && nRowsToMove-- > 1 )
        {
            SwFrame* pNxt = pRow->GetNext();
            nGrow += aRectFnSet.GetHeight(pRow->getFrameArea());

            // The footnotes have to be moved:
            lcl_MoveFootnotes( *GetFollow(), *this, static_cast<SwRowFrame&>(*pRow) );

            pRow->RemoveFromLayout();
            pRow->InsertBehind( this, pInsertBehind );
            pRow->InvalidateAll_();
            pRow->CheckDirChange();
            pInsertBehind = pRow;
            pRow = pNxt;
        }

        SwFrame* pFirstRow = Lower();
        while ( pFirstRow )
        {
            lcl_AdjustRowSpanCells( static_cast<SwRowFrame*>(pFirstRow) );
            pFirstRow = pFirstRow->GetNext();
        }

        Grow( nGrow );
        GetFollow()->Shrink( nGrow );
    }

    bool bJoin = !pFollowFlowLine->GetNext();
    pFollowFlowLine->Cut();
    SwFrame::DestroyFrame(pFollowFlowLine);

    return bJoin;
}

// #i26945# - Floating screen objects are no longer searched.
static bool lcl_FindSectionsInRow( const SwRowFrame& rRow )
{
    bool bRet = false;
    const SwCellFrame* pLower = static_cast<const SwCellFrame*>(rRow.Lower());
    while ( pLower )
    {
        if ( pLower->IsVertical() != rRow.IsVertical() )
            return true;

        const SwFrame* pTmpFrame = pLower->Lower();
        while ( pTmpFrame )
        {
            if ( pTmpFrame->IsRowFrame() )
            {
                bRet = lcl_FindSectionsInRow( *static_cast<const SwRowFrame*>(pTmpFrame) );
            }
            else
            {
                // #i26945# - search only for sections
                if (pTmpFrame->IsSctFrame())
                {
                    bRet = true;

                    if (!rRow.IsInSct())
                    {
                        // This row is not in a section.
                        if (const SwFrame* pSectionLower = pTmpFrame->GetLower())
                        {
                            if (!pSectionLower->IsColumnFrame())
                            {
                                // Section has a single column only, try to
                                // split that.
                                bRet = false;

                                for (const SwFrame* pFrame = pSectionLower; pFrame; pFrame = pFrame->GetNext())
                                {
                                    if (pFrame->IsTabFrame())
                                    {
                                        // Section contains a table, no split in that case.
                                        bRet = true;
                                        break;
                                    }
                                }
                            }
                        }
                    }
                }
            }

            if ( bRet )
                return true;
            pTmpFrame = pTmpFrame->GetNext();
        }

        pLower = static_cast<const SwCellFrame*>(pLower->GetNext());
    }
    return bRet;
}

bool SwTabFrame::Split(const SwTwips nCutPos, bool bTryToSplit,
        bool bTableRowKeep, bool & rIsFootnoteGrowth)
{
    bool bRet = true;

    SwRectFnSet aRectFnSet(this);

    // #i26745# - format row and cell frames of table
    {
        Lower()->InvalidatePos_();
        // #i43913# - correction
        // call method <lcl_InnerCalcLayout> with first lower.
        lcl_InnerCalcLayout( Lower(), LONG_MAX, true );
    }

    //In order to be able to compare the positions of the cells with CutPos,
    //they have to be calculated consecutively starting from the table.
    //They can definitely be invalid because of position changes of the table.
    SwRowFrame *pRow = static_cast<SwRowFrame*>(Lower());
    if( !pRow )
        return bRet;

    const sal_uInt16 nRepeat = GetTable()->GetRowsToRepeat();
    sal_uInt16 nRowCount = 0;           // pRow currently points to the first row

    // Due to the comment above, about possibly invalid positions of cells due to position changes
    // of the table, calculate the rows height subtracting last row's bottom from first row's top,
    // and compare with the available height
    SwTwips nRemainingSpaceForLastRow = aRectFnSet.YDiff(nCutPos, aRectFnSet.GetPrtTop(*this));
    nRemainingSpaceForLastRow -= aRectFnSet.GetBottomMargin(*this);

    if (nRemainingSpaceForLastRow <= 0)
        return false; // upper has no space for this table at all

    auto getRemainingAfter = [aRectFnSet, nAvailable = nRemainingSpaceForLastRow,
                              nFirstRowTop = aRectFnSet.GetTop(pRow->getFrameArea())](SwFrame* p)
    { return nAvailable + (p ? aRectFnSet.BottomDist(p->getFrameArea(), nFirstRowTop) : 0); };

    // Make pRow point to the line that does not fit anymore:
    while (pRow->GetNext())
    {
        SwTwips nNewRemaining = getRemainingAfter(pRow);
        if (nNewRemaining < 0)
            break;
        if( bTryToSplit || !pRow->IsRowSpanLine() ||
            0 != aRectFnSet.GetHeight(pRow->getFrameArea()) )
            ++nRowCount;
        nRemainingSpaceForLastRow = nNewRemaining;
        pRow = static_cast<SwRowFrame*>(pRow->GetNext());
    }

    // bSplitRowAllowed: Row may be split according to its attributes.
    // bTryToSplit:      Row will never be split if bTryToSplit = false.
    //                   This can either be passed as a parameter, indicating
    //                   that we are currently doing the second try to split the
    //                   table, or it will be set to false under certain
    //                   conditions that are not suitable for splitting
    //                   the row.
    bool bSplitRowAllowed = bTryToSplit;
    if (bSplitRowAllowed && !pRow->IsRowSplitAllowed())
    {
        // A row larger than the entire page ought to be allowed to split regardless of setting,
        // otherwise it has hidden content and that makes no sense
        tools::Long nMaxHeight = FindPageFrame()->getFramePrintArea().Height();
        for (auto pBody = FindBodyFrame(); pBody; pBody = pBody->GetUpper()->FindBodyFrame())
        {
            if (pBody->IsPageBodyFrame())
                nMaxHeight = pBody->getFramePrintArea().Height();
        }
        if (pRow->getFrameArea().Height() > nMaxHeight)
            pRow->SetForceRowSplitAllowed( true );
        else
            bSplitRowAllowed = false;
    }
    // #i29438#
    // #i26945# - Floating screen objects no longer forbid
    // a splitting of the table row.
    // Special DoNotSplit case 1:
    // Search for sections inside pRow:
    if (bSplitRowAllowed && lcl_FindSectionsInRow(*pRow))
    {
        bSplitRowAllowed = false;
    }

    SwFlyFrame* pFly = FindFlyFrame();
    if (bSplitRowAllowed && pFly && pFly->IsFlySplitAllowed())
    {
        // The remaining size is less than the minimum row height, then don't even try to split the
        // row, just move it forward.
        const SwFormatFrameSize& rRowSize = pRow->GetFormat()->GetFrameSize();
        if (rRowSize.GetHeightSizeType() == SwFrameSize::Minimum)
        {
            SwTwips nMinHeight = rRowSize.GetHeight();
            if (nMinHeight > nRemainingSpaceForLastRow)
            {
                bSplitRowAllowed = false;

                if (!pRow->GetPrev() && aRectFnSet.GetHeight(pRow->getFrameArea()) > nRemainingSpaceForLastRow)
                {
                    // Split of pRow is not allowed, no previous row, the current row doesn't fit:
                    // that's a failure, we'll have to move forward instead.
                    return false;
                }
            }
        }
    }

    // #i29771#
    // To avoid loops, we do some checks before actually trying to split
    // the row. Maybe we should keep the next row in this table.
    // Note: This is only done if we are at the beginning of our upper
    bool bKeepNextRow = false;
    if ( nRowCount < nRepeat )
    {
        // First case: One of the repeated headline does not fit to the page anymore.
        // tdf#88496 Disable repeated headline (like for #i44910#) to avoid loops and
        // to fix interoperability problems (very long tables only with headline)
        // tdf#150149 except in multi-column sections, where it's possible to enlarge
        // the height of the section frame instead of using this fallback
        OSL_ENSURE( !GetIndPrev(), "Table is supposed to be at beginning" );
        if ( !IsInSct() )
        {
            // This would mean the layout modifies the doc model, so RowsToRepeat drops to 0 while
            // there are existing row frames with RepeatedHeadline == true. Avoid this at least
            // inside split flys, it would lead to a crash in SwTabFrame::MakeAll().
            if (!pFly || !pFly->IsFlySplitAllowed())
            {
                m_pTable->SetRowsToRepeat(0);
            }
            return false;
        }
        else
            bKeepNextRow = true;
    }
    else if ( !GetIndPrev() && nRepeat == nRowCount )
    {
        // Second case: The first non-headline row does not fit to the page.
        // If it is not allowed to be split, or it contains a sub-row that
        // is not allowed to be split, we keep the row in this table:
        if (bSplitRowAllowed)
        {
            // Check if there are (first) rows inside this row,
            // which are not allowed to be split.
            SwCellFrame* pLowerCell = static_cast<SwCellFrame*>(pRow->Lower());
            while ( pLowerCell )
            {
                if ( pLowerCell->Lower() && pLowerCell->Lower()->IsRowFrame() )
                {
                    const SwRowFrame* pLowerRow = static_cast<SwRowFrame*>(pLowerCell->Lower());
                    if ( !pLowerRow->IsRowSplitAllowed() &&
                        aRectFnSet.GetHeight(pLowerRow->getFrameArea()) > nRemainingSpaceForLastRow )
                    {
                        bKeepNextRow = true;
                        break;
                    }
                }
                pLowerCell = static_cast<SwCellFrame*>(pLowerCell->GetNext());
            }
        }
        else
            bKeepNextRow = true;
    }

    // Better keep the next row in this table:
    if ( bKeepNextRow )
    {
        pRow = GetFirstNonHeadlineRow();
        if ( pRow && pRow->IsRowSpanLine() && 0 == aRectFnSet.GetHeight(pRow->getFrameArea()) )
            pRow = static_cast<SwRowFrame*>(pRow->GetNext());
        if ( pRow )
        {
            pRow = static_cast<SwRowFrame*>(pRow->GetNext());
            ++nRowCount;
        }
    }

    // No more row to split or to move to follow table:
    if ( !pRow )
        return bRet;

    // We try to split the row if
    // - the attributes of the row are set accordingly and
    // - we are allowed to do so
    // - it should not be kept with the next row
    bSplitRowAllowed = bSplitRowAllowed && (!bTableRowKeep || !pRow->ShouldRowKeepWithNext());

    // Adjust pRow according to the keep-with-next attribute:
    if ( !bSplitRowAllowed && bTableRowKeep )
    {
        SwRowFrame* pTmpRow = static_cast<SwRowFrame*>(pRow->GetPrev());
        SwRowFrame* pOldRow = pRow;
        while ( pTmpRow && pTmpRow->ShouldRowKeepWithNext() &&
                nRowCount > nRepeat )
        {
            // Special case: pTmpRow wants to keep with pRow, but allows splitting, and some its
            // cells span several rows, including pRow. In this case, the "split" of the spanning
            // cells of the pTmpRow may still happen by moving pRow to the next page, even here
            // with !bSplitRowAllowed.
            if (pTmpRow->IsRowSplitAllowed())
            {
                bool bCellSpanCanSplit = false;
                for (auto pCellFrame = static_cast<const SwCellFrame*>(pTmpRow->GetLower());
                     pCellFrame;
                     pCellFrame = static_cast<const SwCellFrame*>(pCellFrame->GetNext()))
                {
                    if (pCellFrame->GetTabBox()->getRowSpan() > 1) // Master cell
                    {
                        bCellSpanCanSplit = true;
                        break;
                    }
                }
                if (bCellSpanCanSplit)
                    break;
            }
            pRow = pTmpRow;
            --nRowCount;
            pTmpRow = static_cast<SwRowFrame*>(pTmpRow->GetPrev());
        }

        // loop prevention
        if ( nRowCount == nRepeat && !GetIndPrev())
        {
            pRow = pOldRow;
        }
    }

    // If we do not intend to split pRow, we check if we are
    // allowed to move pRow to a follow. Otherwise we return
    // false, indicating an error
    if ( !bSplitRowAllowed )
    {
        SwRowFrame* pFirstNonHeadlineRow = GetFirstNonHeadlineRow();
        if ( pRow == pFirstNonHeadlineRow )
            return false;

        // #i91764#
        // Ignore row span lines
        SwRowFrame* pTmpRow = pFirstNonHeadlineRow;
        while ( pTmpRow && pTmpRow->IsRowSpanLine() )
        {
            pTmpRow = static_cast<SwRowFrame*>(pTmpRow->GetNext());
        }
        if ( !pTmpRow || pRow == pTmpRow )
        {
            return false;
        }
    }

    // Build follow table if not already done:
    bool bNewFollow;
    SwTabFrame *pFoll;
    if ( GetFollow() )
    {
        pFoll = GetFollow();
        bNewFollow = false;
    }
    else
    {
        bNewFollow = true;
        pFoll = new SwTabFrame( *this );

        // We give the follow table an initial width.
        {
            SwFrameAreaDefinition::FrameAreaWriteAccess aFrm(*pFoll);
            aRectFnSet.AddWidth(aFrm, aRectFnSet.GetWidth(getFrameArea()));
            aRectFnSet.SetLeft(aFrm, aRectFnSet.GetLeft(getFrameArea()));
        }

        {
            SwFrameAreaDefinition::FramePrintAreaWriteAccess aPrt(*pFoll);
            aRectFnSet.AddWidth(aPrt, aRectFnSet.GetWidth(getFramePrintArea()));
        }

        // Insert the new follow table
        pFoll->InsertBehind( GetUpper(), this );

        // Repeat the headlines.
        auto& rLines = GetTable()->GetTabLines();
        for ( nRowCount = 0; nRowCount < nRepeat; ++nRowCount )
        {
            // Insert new headlines:
            SwRowFrame* pHeadline = new SwRowFrame(*rLines[nRowCount], this);
            {
                sw::FlyCreationSuppressor aSuppressor;
                pHeadline->SetRepeatedHeadline(true);
            }
            pHeadline->InsertBefore( pFoll, nullptr );

            SwPageFrame *pPage = pHeadline->FindPageFrame();
            const sw::SpzFrameFormats* pSpzs = GetFormat()->GetDoc().GetSpzFrameFormats();
            if( !pSpzs->empty() )
            {
                SwNodeOffset nIndex;
                SwContentFrame* pFrame = pHeadline->ContainsContent();
                while( pFrame )
                {
                    // sw_redlinehide: the implementation of AppendObjs
                    // takes care of iterating merged SwTextFrame
                    nIndex = pFrame->IsTextFrame()
                        ? static_cast<SwTextFrame*>(pFrame)->GetTextNodeFirst()->GetIndex()
                        : static_cast<SwNoTextFrame*>(pFrame)->GetNode()->GetIndex();
                    AppendObjs(pSpzs, nIndex, pFrame, pPage, GetFormat()->GetDoc());
                    pFrame = pFrame->GetNextContentFrame();
                    if( !pHeadline->IsAnLower( pFrame ) )
                        break;
                }
            }
        }
    }

    SwRowFrame* pLastRow = nullptr;     // points to the last remaining line in master
    SwRowFrame* pFollowRow = nullptr;   // points to either the follow flow line or the
                                        // first regular line in the follow

    if ( bSplitRowAllowed )
    {
        // If the row that does not fit anymore is allowed
        // to be split, the next row has to be moved to the follow table.
        pLastRow = pRow;
        pRow = static_cast<SwRowFrame*>(pRow->GetNext());

        // new follow flow line for last row of master table
        pFollowRow = lcl_InsertNewFollowFlowLine( *this, *pLastRow, false );
    }
    else
    {
        pFollowRow = pRow;

        // NEW TABLES
        // check if we will break a row span by moving pFollowRow to the follow:
        // In this case we want to reformat the last line.
        const SwCellFrame* pCellFrame = static_cast<const SwCellFrame*>(pFollowRow->GetLower());
        while ( pCellFrame )
        {
            if ( pCellFrame->GetTabBox()->getRowSpan() < 1 )
            {
                pLastRow = static_cast<SwRowFrame*>(pRow->GetPrev());
                break;
            }

            pCellFrame = static_cast<const SwCellFrame*>(pCellFrame->GetNext());
        }

        // new follow flow line for last row of master table
        if ( pLastRow )
            pFollowRow = lcl_InsertNewFollowFlowLine( *this, *pLastRow, true );
    }

    const SwTwips nShrink = lcl_GetHeightOfRows(pRow, std::numeric_limits<tools::Long>::max());

    //Optimization: There is no paste needed for the new Follow and the
    //optimized insert can be used (large numbers of rows luckily only occur in
    //such situations).
    if ( bNewFollow )
    {
        SwFrame* pInsertBehind = pFoll->GetLastLower();

        while ( pRow )
        {
            SwFrame* pNxt = pRow->GetNext();
            // The footnotes do not have to be moved, this is done in the
            // MoveFwd of the follow table!!!
            pRow->RemoveFromLayout();
            pRow->InsertBehind( pFoll, pInsertBehind );
            pRow->InvalidateAll_();
            pInsertBehind = pRow;
            pRow = static_cast<SwRowFrame*>(pNxt);
        }
    }
    else
    {
        SwFrame* pPasteBefore = HasFollowFlowLine() ?
                              pFollowRow->GetNext() :
                              pFoll->GetFirstNonHeadlineRow();

        while ( pRow )
        {
            SwFrame* pNxt = pRow->GetNext();

            // The footnotes have to be moved:
            lcl_MoveFootnotes( *this, *GetFollow(), *pRow );

            pRow->RemoveFromLayout();
            pRow->Paste( pFoll, pPasteBefore );

            pRow->CheckDirChange();
            pRow = static_cast<SwRowFrame*>(pNxt);
        }
    }

    if ( !pLastRow )
        Shrink( nShrink );
    else
    {
        // we rebuild the last line to assure that it will be fully formatted
        // we also don't shrink here, because we will be doing that in lcl_RecalcSplitLine

        // recalculate the split line
        bRet = lcl_RecalcSplitLine(*pLastRow, *pFollowRow, getRemainingAfter(pLastRow->GetPrev()), nShrink, rIsFootnoteGrowth);

        // RecalcSplitLine did not work. In this case we conceal the split error:
        if (!bRet && !bSplitRowAllowed)
        {
            bRet = true;
        }

        // NEW TABLES
        // check if each cell in the row span line has a good height
        if ( bRet && pFollowRow->IsRowSpanLine() )
            lcl_AdjustRowSpanCells( pFollowRow );
    }

    return bRet;
}

namespace
{
    bool CanDeleteFollow(const SwTabFrame *pFoll)
    {
        if (pFoll->IsJoinLocked())
            return false;

        if (pFoll->IsDeleteForbidden())
        {
            SAL_WARN("sw.layout", "Delete Forbidden");
            return false;
        }

        return true;
    }

    auto IsAllHiddenSection(SwSectionFrame const& rSection) -> bool
    {
        if (rSection.IsHiddenNow())
            return true;
        for (SwFrame const* pFrame = rSection.Lower(); pFrame; pFrame = pFrame->GetNext())
        {
            if (pFrame->IsColumnFrame())
            {
                return false; // adds some padding
            }
            else if (pFrame->IsSctFrame())
            {
                assert(false); // these aren't nested?
                if (!IsAllHiddenSection(*static_cast<SwSectionFrame const*>(pFrame)))
                {
                    return false;
                }
            }
            else if (pFrame->IsTabFrame())
            {
                return false; // presumably
            }
            else if (pFrame->IsTextFrame())
            {
                if (!pFrame->IsHiddenNow())
                {
                    return false;
                }
            }
        }
        return true;
    }

    auto IsAllHiddenRow(SwRowFrame const& rRow, SwTabFrame const& rTab) -> bool;

    auto IsAllHiddenCell(SwCellFrame const& rCell, SwRowFrame const& rRow, SwTabFrame const& rTab) -> bool
    {
        for (SwFrame const* pFrame = rCell.Lower(); pFrame; pFrame = pFrame->GetNext())
        {
            if (pFrame->IsRowFrame())
            {
                if (!IsAllHiddenRow(*static_cast<SwRowFrame const*>(pFrame), rTab))
                {
                    return false;
                }
            }
            else if (pFrame->IsSctFrame())
            {
                if (!IsAllHiddenSection(*static_cast<SwSectionFrame const*>(pFrame)))
                {
                    return false;
                }
            }
            else if (pFrame->IsTabFrame())
            {
                return false; // presumably
            }
            else if (pFrame->IsTextFrame())
            {
                if (!pFrame->IsHiddenNow())
                {
                    return false;
                }
            }
        }
        const SwFrame* pLower = rCell.Lower();
        assert(pLower);
        if (rTab.IsCollapsingBorders() && pLower && !pLower->IsRowFrame())
        {
            if (rRow.GetTopMarginForLowers() != 0
                || rRow.GetBottomMarginForLowers() != 0)
            {
                return false;
            }
        }
        else
        {
            SwBorderAttrAccess border(SwFrame::GetCache(), &rCell);
            if (border.Get()->CalcTop() != 0 || border.Get()->CalcBottom() != 0)
            {
                return false;
            }
        }
        return true;
    }

    auto IsAllHiddenRow(SwRowFrame const& rRow, SwTabFrame const& rTab) -> bool
    {
        for (SwFrame const* pCell = rRow.Lower(); pCell; pCell = pCell->GetNext())
        {
            if (!IsAllHiddenCell(*static_cast<SwCellFrame const*>(pCell), rRow, rTab))
            {
                return false;
            }
        }
        return true;
    }

} // namespace

void SwTabFrame::Join()
{
    OSL_ENSURE( !HasFollowFlowLine(), "Joining follow flow line" );

    SwTabFrame *pFoll = GetFollow();

    if (!pFoll || !CanDeleteFollow(pFoll))
        return;

    SwRectFnSet aRectFnSet(this);
    pFoll->Cut();   //Cut out first to avoid unnecessary notifications.

    SwFrame *pRow = pFoll->GetFirstNonHeadlineRow(),
          *pNxt;

    SwFrame* pPrv = GetLastLower();

    SwTwips nHeight = 0;    //Total height of the inserted rows as return value.
    bool isAllHidden(true);

    while ( pRow )
    {
        pNxt = pRow->GetNext();
        nHeight += aRectFnSet.GetHeight(pRow->getFrameArea());
        if (nHeight != 0)
        {
            isAllHidden = false;
        }
        if (isAllHidden)
        {
            isAllHidden = IsAllHiddenRow(*static_cast<SwRowFrame *>(pRow), *this);
        }
        pRow->RemoveFromLayout();
        pRow->InvalidateAll_();
        pRow->InsertBehind( this, pPrv );
        pRow->CheckDirChange();
        pPrv = pRow;
        pRow = pNxt;
    }

    SetFollow( pFoll->GetFollow() );
    SetFollowFlowLine( pFoll->HasFollowFlowLine() );
    SwFrame::DestroyFrame(pFoll);

    Grow( nHeight );

    // In case the row does not have a height, Grow(nHeight) did nothing.
    // If this is not invalidated, subsequent follows may never be joined.
    // Try to guess if the height of the row will be 0.  If the document
    // was just loaded, it will be 0 in any case, but probably it's not a good
    // idea to join *all* follows for a newly loaded document, it would be
    // easier not to split the table in the first place; presumably it is split
    // because that improves performance.
    if (isAllHidden)
    {
        InvalidateSize_();
    }
}

static void SwInvalidatePositions( SwFrame *pFrame, tools::Long nBottom )
{
    // LONG_MAX == nBottom means we have to calculate all
    bool bAll = LONG_MAX == nBottom;
    SwRectFnSet aRectFnSet(pFrame);
    do
    {   pFrame->InvalidatePos_();
        pFrame->InvalidateSize_();
        if( pFrame->IsLayoutFrame() )
        {
            if ( static_cast<SwLayoutFrame*>(pFrame)->Lower() )
            {
                ::SwInvalidatePositions( static_cast<SwLayoutFrame*>(pFrame)->Lower(), nBottom);
                // #i26945#
                ::lcl_InvalidateLowerObjs( *static_cast<SwLayoutFrame*>(pFrame) );
            }
        }
        else
            pFrame->Prepare( PrepareHint::AdjustSizeWithoutFormatting );
        pFrame = pFrame->GetNext();
    } while ( pFrame &&
              ( bAll ||
              aRectFnSet.YDiff( aRectFnSet.GetTop(pFrame->getFrameArea()), nBottom ) < 0 ) );
}

void SwInvalidateAll( SwFrame *pFrame, tools::Long nBottom )
{
    // LONG_MAX == nBottom means we have to calculate all
    bool bAll = LONG_MAX == nBottom;
    SwRectFnSet aRectFnSet(pFrame);
    do
    {
        pFrame->InvalidatePos_();
        pFrame->InvalidateSize_();
        pFrame->InvalidatePrt_();
        if( pFrame->IsLayoutFrame() )
        {
            // NEW TABLES
            SwLayoutFrame* pToInvalidate = static_cast<SwLayoutFrame*>(pFrame);
            if (pFrame->IsCellFrame())
            {
                SwCellFrame* pThisCell = static_cast<SwCellFrame*>(pFrame);
                if ( pThisCell->GetTabBox()->getRowSpan() < 1 )
                {
                    pToInvalidate = & const_cast<SwCellFrame&>(pThisCell->FindStartEndOfRowSpanCell( true ));
                    pToInvalidate->InvalidatePos_();
                    pToInvalidate->InvalidateSize_();
                    pToInvalidate->InvalidatePrt_();
                }
            }
            if ( pToInvalidate->Lower() )
                ::SwInvalidateAll( pToInvalidate->Lower(), nBottom);
        }
        else
            pFrame->Prepare();

        pFrame = pFrame->GetNext();
    } while ( pFrame &&
              ( bAll ||
              aRectFnSet.YDiff( aRectFnSet.GetTop(pFrame->getFrameArea()), nBottom ) < 0 ) );
}

// #i29550#
static void lcl_InvalidateAllLowersPrt( SwLayoutFrame* pLayFrame )
{
    pLayFrame->InvalidatePrt_();
--> --------------------

--> maximum size reached

--> --------------------