DocumentLayoutManager.cxx

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/* -*- 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 <DocumentLayoutManager.hxx>
#include <doc.hxx>
#include <IDocumentState.hxx>
#include <IDocumentUndoRedo.hxx>
#include <DocumentContentOperationsManager.hxx>
#include <IDocumentStylePoolAccess.hxx>
#include <undobj.hxx>
#include <viewsh.hxx>
#include <layouter.hxx>
#include <poolfmt.hxx>
#include <frmfmt.hxx>
#include <fmtcntnt.hxx>
#include <fmtcnct.hxx>
#include <ndole.hxx>
#include <fmtanchr.hxx>
#include <txtflcnt.hxx>
#include <fmtflcnt.hxx>
#include <ndtxt.hxx>
#include <unoframe.hxx>
#include <textboxhelper.hxx>
#include <ndindex.hxx>
#include <pam.hxx>
#include <frameformats.hxx>
#include <com/sun/star/embed/EmbedStates.hpp>
#include <svx/svdobj.hxx>
#include <svx/svdpage.hxx>
#include <osl/diagnose.h>

using namespace ::com::sun::star;

namespace sw
{

DocumentLayoutManager::DocumentLayoutManager( SwDoc& i_rSwdoc ) :
    m_rDoc( i_rSwdoc ),
    mpCurrentView( nullptr )
{
}

const SwViewShell *DocumentLayoutManager::GetCurrentViewShell() const
{
    return mpCurrentView;
}

SwViewShell *DocumentLayoutManager::GetCurrentViewShell()
{
    return mpCurrentView;
}

void DocumentLayoutManager::SetCurrentViewShell( SwViewShell* pNew )
{
    mpCurrentView = pNew;
}

// It must be able to communicate to a SwViewShell. This is going to be removed later.
const SwRootFrame *DocumentLayoutManager::GetCurrentLayout() const
{
    if(GetCurrentViewShell())
        return GetCurrentViewShell()->GetLayout();
    return nullptr;
}

SwRootFrame *DocumentLayoutManager::GetCurrentLayout()
{
    if(GetCurrentViewShell())
        return GetCurrentViewShell()->GetLayout();
    return nullptr;
}

bool DocumentLayoutManager::HasLayout() const
{
    // if there is a view, there is always a layout
    return (mpCurrentView != nullptr);
}

SwLayouter* DocumentLayoutManager::GetLayouter()
{
    return mpLayouter.get();
}

const SwLayouter* DocumentLayoutManager::GetLayouter() const
{
    return mpLayouter.get();
}

void DocumentLayoutManager::SetLayouter( SwLayouter* pNew )
{
    mpLayouter.reset( pNew );
}

SwFrameFormat *DocumentLayoutManager::MakeLayoutFormat( RndStdIds eRequest, const SfxItemSet* pSet )
{
    SwFrameFormat *pFormat = nullptr;
    const bool bMod = m_rDoc.getIDocumentState().IsModified();
    bool bHeader = false;

    switch ( eRequest )
    {
    case RndStdIds::HEADER:
    case RndStdIds::HEADERL:
    case RndStdIds::HEADERR:
        {
            bHeader = true;
            [[fallthrough]];
        }
    case RndStdIds::FOOTER:
        {
            pFormat = new SwFrameFormat( m_rDoc.GetAttrPool(),
                                 (bHeader ? "Right header" : "Right footer"),
                                 m_rDoc.GetDfltFrameFormat() );

            SwNodeIndex aTmpIdx( m_rDoc.GetNodes().GetEndOfAutotext() );
            SwStartNode* pSttNd =
                m_rDoc.GetNodes().MakeTextSection
                ( aTmpIdx,
                  bHeader ? SwHeaderStartNode : SwFooterStartNode,
                  m_rDoc.getIDocumentStylePoolAccess().GetTextCollFromPool(o3tl::narrowing<sal_uInt16>( bHeader
                                     ? ( eRequest == RndStdIds::HEADERL
                                         ? RES_POOLCOLL_HEADERL
                                         : eRequest == RndStdIds::HEADERR
                                         ? RES_POOLCOLL_HEADERR
                                         : RES_POOLCOLL_HEADER )
                                     : RES_POOLCOLL_FOOTER
                                     ) ) );
            pFormat->SetFormatAttr( SwFormatContent( pSttNd ));

            if( pSet )      // Set a few more attributes
                pFormat->SetFormatAttr( *pSet );

            // Why set it back?  Doc has changed, or not?
            // In any case, wrong for the FlyFrames!
            if ( !bMod )
                m_rDoc.getIDocumentState().ResetModified();
        }
        break;

    case RndStdIds::DRAW_OBJECT:
        {
            pFormat = m_rDoc.MakeDrawFrameFormat( OUString(), m_rDoc.GetDfltFrameFormat() );
            if( pSet )      // Set a few more attributes
                pFormat->SetFormatAttr( *pSet );

            if (m_rDoc.GetIDocumentUndoRedo().DoesUndo())
            {
                m_rDoc.GetIDocumentUndoRedo().AppendUndo(
                    std::make_unique<SwUndoInsLayFormat>(pFormat, SwNodeOffset(0), 0));
            }
        }
        break;

#if OSL_DEBUG_LEVEL > 0
    case RndStdIds::FLY_AT_PAGE:
    case RndStdIds::FLY_AT_CHAR:
    case RndStdIds::FLY_AT_FLY:
    case RndStdIds::FLY_AT_PARA:
    case RndStdIds::FLY_AS_CHAR:
        OSL_FAIL( "use new interface instead: SwDoc::MakeFlySection!" );
        break;
#endif

    default:
        OSL_ENSURE( false,
                "LayoutFormat was requested with an invalid Request." );

    }
    return pFormat;
}

void DocumentLayoutManager::DelLayoutFormat( SwFrameFormat *pFormat )
{
    // A chain of frames needs to be merged, if necessary,
    // so that the Frame's contents are adjusted accordingly before we destroy the Frames.
    const SwFormatChain &rChain = pFormat->GetChain();
    if ( rChain.GetPrev() )
    {
        SwFormatChain aChain( rChain.GetPrev()->GetChain() );
        aChain.SetNext( rChain.GetNext() );
        m_rDoc.SetAttr( aChain, *rChain.GetPrev() );
    }
    if ( rChain.GetNext() )
    {
        SwFormatChain aChain( rChain.GetNext()->GetChain() );
        aChain.SetPrev( rChain.GetPrev() );
        m_rDoc.SetAttr( aChain, *rChain.GetNext() );
    }

    const SwNodeIndex* pCntIdx = nullptr;
    // The draw format doesn't own its content, it just has a pointer to it.
    if (pFormat->Which() != RES_DRAWFRMFMT)
        pCntIdx = pFormat->GetContent().GetContentIdx();
    if (pCntIdx && !m_rDoc.GetIDocumentUndoRedo().DoesUndo())
    {
        // Disconnect if it's an OLE object
        SwOLENode* pOLENd = m_rDoc.GetNodes()[ pCntIdx->GetIndex()+1 ]->GetOLENode();
        if( pOLENd && pOLENd->GetOLEObj().IsOleRef() )
        {
            try
            {
                pOLENd->GetOLEObj().GetOleRef()->changeState( embed::EmbedStates::LOADED );
            }
            catch ( uno::Exception& )
            {
            }
        }
    }

    // Destroy Frames
    pFormat->DelFrames();

    // Only FlyFrames are undoable at first
    const sal_uInt16 nWh = pFormat->Which();
    if (m_rDoc.GetIDocumentUndoRedo().DoesUndo() &&
        (RES_FLYFRMFMT == nWh || RES_DRAWFRMFMT == nWh))
    {
        m_rDoc.GetIDocumentUndoRedo().AppendUndo( std::make_unique<SwUndoDelLayFormat>( pFormat ));
    }
    else
    {
        // #i32089# - delete at-frame anchored objects
        if ( nWh == RES_FLYFRMFMT )
        {
            // determine frame formats of at-frame anchored objects
            const SwNodeIndex* pContentIdx = nullptr;
            if (pFormat->Which() != RES_DRAWFRMFMT)
                pContentIdx = pFormat->GetContent().GetContentIdx();
            if (pContentIdx)
            {
                const SwFrameFormats* pTable = pFormat->GetDoc()->GetSpzFrameFormats();
                if ( pTable )
                {
                    std::vector<SwFrameFormat*> aToDeleteFrameFormats;
                    const SwNodeOffset nNodeIdxOfFlyFormat( pContentIdx->GetIndex() );

                    for ( size_t i = 0; i < pTable->size(); ++i )
                    {
                        SwFrameFormat* pTmpFormat = (*pTable)[i];
                        const SwFormatAnchor &rAnch = pTmpFormat->GetAnchor();
                        if ( rAnch.GetAnchorId() == RndStdIds::FLY_AT_FLY &&
                             rAnch.GetContentAnchor()->nNode.GetIndex() == nNodeIdxOfFlyFormat )
                        {
                            aToDeleteFrameFormats.push_back( pTmpFormat );
                        }
                    }

                    // delete found frame formats
                    while ( !aToDeleteFrameFormats.empty() )
                    {
                        SwFrameFormat* pTmpFormat = aToDeleteFrameFormats.back();
                        pFormat->GetDoc()->getIDocumentLayoutAccess().DelLayoutFormat( pTmpFormat );

                        aToDeleteFrameFormats.pop_back();
                    }
                }
            }
        }

        // Delete content
        if( pCntIdx )
        {
            SwNode *pNode = &pCntIdx->GetNode();
            const_cast<SwFormatContent&>(pFormat->GetFormatAttr( RES_CNTNT )).SetNewContentIdx( nullptr );
            m_rDoc.getIDocumentContentOperations().DeleteSection( pNode );
        }

        // Delete the character for FlyFrames anchored as char (if necessary)
        const SwFormatAnchor& rAnchor = pFormat->GetAnchor();
        if ((RndStdIds::FLY_AS_CHAR == rAnchor.GetAnchorId()) && rAnchor.GetContentAnchor())
        {
            const SwPosition* pPos = rAnchor.GetContentAnchor();
            SwTextNode *pTextNd = pPos->nNode.GetNode().GetTextNode();

            // attribute is still in text node, delete it
            if ( pTextNd )
            {
                SwTextFlyCnt* const pAttr = static_cast<SwTextFlyCnt*>(
                    pTextNd->GetTextAttrForCharAt( pPos->nContent.GetIndex(),
                        RES_TXTATR_FLYCNT ));
                if ( pAttr && (pAttr->GetFlyCnt().GetFrameFormat() == pFormat) )
                {
                    // don't delete, set pointer to 0
                    const_cast<SwFormatFlyCnt&>(pAttr->GetFlyCnt()).SetFlyFormat();
                    SwIndex aIdx( pPos->nContent );
                    pTextNd->EraseText( aIdx, 1 );
                }
            }
        }

        m_rDoc.DelFrameFormat( pFormat );
    }
    m_rDoc.getIDocumentState().SetModified();
}

SwFrameFormat *DocumentLayoutManager::CopyLayoutFormat(
    const SwFrameFormat& rSource,
    const SwFormatAnchor& rNewAnchor,
    bool bSetTextFlyAtt,
    bool bMakeFrames )
{
    const bool bFly = RES_FLYFRMFMT == rSource.Which();
    const bool bDraw = RES_DRAWFRMFMT == rSource.Which();
    OSL_ENSURE( bFly || bDraw, "this method only works for fly or draw" );

    SwDoc* pSrcDoc = const_cast<SwDoc*>(rSource.GetDoc());

    // May we copy this object?
    // We may, unless it's 1) it's a control (and therefore a draw)
    //                     2) anchored in a header/footer
    //                     3) anchored (to paragraph?)
    bool bMayNotCopy = false;
    if(bDraw)
    {
        const auto pCAnchor = rNewAnchor.GetContentAnchor();
        bool bCheckControlLayer = false;
        rSource.CallSwClientNotify(sw::CheckDrawFrameFormatLayerHint(&bCheckControlLayer));
        bMayNotCopy =
            bCheckControlLayer &&
            ((RndStdIds::FLY_AT_PARA == rNewAnchor.GetAnchorId()) || (RndStdIds::FLY_AT_FLY  == rNewAnchor.GetAnchorId()) || (RndStdIds::FLY_AT_CHAR == rNewAnchor.GetAnchorId())) &&
            pCAnchor && m_rDoc.IsInHeaderFooter(pCAnchor->nNode);
    }

    // just return if we can't copy this
    if( bMayNotCopy )
        return nullptr;

    SwFrameFormat* pDest = m_rDoc.GetDfltFrameFormat();
    if( rSource.GetRegisteredIn() != pSrcDoc->GetDfltFrameFormat() )
        pDest = m_rDoc.CopyFrameFormat( *static_cast<const SwFrameFormat*>(rSource.GetRegisteredIn()) );
    if( bFly )
    {
        // #i11176#
        // To do a correct cloning concerning the ZOrder for all objects
        // it is necessary to actually create a draw object for fly frames, too.
        // These are then added to the DrawingLayer (which needs to exist).
        // Together with correct sorting of all drawinglayer based objects
        // before cloning ZOrder transfer works correctly then.
        SwFlyFrameFormat *pFormat = m_rDoc.MakeFlyFrameFormat( rSource.GetName(), pDest );
        pDest = pFormat;

        SwXFrame::GetOrCreateSdrObject(*pFormat);
    }
    else
        pDest = m_rDoc.MakeDrawFrameFormat( OUString(), pDest );

    // Copy all other or new attributes
    pDest->CopyAttrs( rSource );

    // Do not copy chains
    pDest->ResetFormatAttr( RES_CHAIN );

    if( bFly )
    {
        // Duplicate the content.
        const SwNode& rCSttNd = rSource.GetContent().GetContentIdx()->GetNode();
        SwNodeRange aRg( rCSttNd, SwNodeOffset(1), *rCSttNd.EndOfSectionNode() );

        SwNodeIndex aIdx( m_rDoc.GetNodes().GetEndOfAutotext() );
        SwStartNode* pSttNd = SwNodes::MakeEmptySection( aIdx, SwFlyStartNode );

        // Set the Anchor/ContentIndex first.
        // Within the copying part, we can access the values (DrawFormat in Headers and Footers)
        aIdx = *pSttNd;
        SwFormatContent aAttr( rSource.GetContent() );
        aAttr.SetNewContentIdx( &aIdx );
        pDest->SetFormatAttr( aAttr );
        pDest->SetFormatAttr( rNewAnchor );

        if( !m_rDoc.IsCopyIsMove() || &m_rDoc != pSrcDoc )
        {
            if( m_rDoc.IsInReading() || m_rDoc.IsInMailMerge() )
                pDest->SetName( OUString() );
            else
            {
                // Test first if the name is already taken, if so generate a new one.
                SwNodeType nNdTyp = aRg.aStart.GetNode().GetNodeType();

                OUString sOld( pDest->GetName() );
                pDest->SetName( OUString() );
                if( m_rDoc.FindFlyByName( sOld, nNdTyp ) )     // found one
                    switch( nNdTyp )
                    {
                    case SwNodeType::Grf:    sOld = m_rDoc.GetUniqueGrfName();      break;
                    case SwNodeType::Ole:    sOld = m_rDoc.GetUniqueOLEName();      break;
                    default:                 sOld = m_rDoc.GetUniqueFrameName();    break;
                    }

                pDest->SetName( sOld );
            }
        }

        if (m_rDoc.GetIDocumentUndoRedo().DoesUndo())
        {
            m_rDoc.GetIDocumentUndoRedo().AppendUndo(std::make_unique<SwUndoInsLayFormat>(pDest,SwNodeOffset(0),0));
        }

        // Make sure that FlyFrames in FlyFrames are copied
        aIdx = *pSttNd->EndOfSectionNode();

        //fdo#36631 disable (scoped) any undo operations associated with the
        //contact object itself. They should be managed by SwUndoInsLayFormat.
        const ::sw::DrawUndoGuard drawUndoGuard(m_rDoc.GetIDocumentUndoRedo());

        pSrcDoc->GetDocumentContentOperationsManager().CopyWithFlyInFly(aRg, aIdx, nullptr, false, true, true);
    }
    else
    {
        OSL_ENSURE( RES_DRAWFRMFMT == rSource.Which(), "Neither Fly nor Draw." );
        // #i52780# - Note: moving object to visible layer not needed.
        rSource.CallSwClientNotify(sw::DrawFormatLayoutCopyHint(static_cast<SwDrawFrameFormat&>(*pDest), m_rDoc));

        if(pDest->GetAnchor() == rNewAnchor)
        {
            // Do *not* connect to layout, if a <MakeFrames> will not be called.
            if(bMakeFrames)
                pDest->CallSwClientNotify(sw::DrawFrameFormatHint(sw::DrawFrameFormatHintId::MAKE_FRAMES));

        }
        else
            pDest->SetFormatAttr( rNewAnchor );

        if (m_rDoc.GetIDocumentUndoRedo().DoesUndo())
        {
            m_rDoc.GetIDocumentUndoRedo().AppendUndo(std::make_unique<SwUndoInsLayFormat>(pDest,SwNodeOffset(0),0));
        }
    }

    if (bSetTextFlyAtt && (RndStdIds::FLY_AS_CHAR == rNewAnchor.GetAnchorId()))
    {
        const SwPosition* pPos = rNewAnchor.GetContentAnchor();
        SwFormatFlyCnt aFormat( pDest );
        pPos->nNode.GetNode().GetTextNode()->InsertItem(
            aFormat, pPos->nContent.GetIndex(), 0 );
    }

    if( bMakeFrames )
        pDest->MakeFrames();

    // If the draw format has a TextBox, then copy its fly format as well.
    if (rSource.Which() == RES_DRAWFRMFMT && rSource.GetOtherTextBoxFormats())
    {
        auto pObj = rSource.FindRealSdrObject();
        auto pTextBoxNd = std::make_shared<SwTextBoxNode>(SwTextBoxNode(pDest));
        pDest->SetOtherTextBoxFormats(pTextBoxNd);

        if (pObj)
        {
            const bool bIsGroupObj = pObj->getChildrenOfSdrObject();
            for (size_t it = 0;
                 it < (bIsGroupObj ? pObj->getChildrenOfSdrObject()->GetObjCount() : 1); it++)
            {
                auto pChild = bIsGroupObj ? pObj->getChildrenOfSdrObject()->GetObj(it)
                                          : const_cast<SdrObject*>(pObj);
                if (auto pSourceTextBox
                    = SwTextBoxHelper::getOtherTextBoxFormat(&rSource, RES_DRAWFRMFMT, pChild))
                {
                    SwFormatAnchor boxAnchor(rNewAnchor);
                    if (RndStdIds::FLY_AS_CHAR == boxAnchor.GetAnchorId())
                    {
                        // AS_CHAR *must not* be set on textbox fly-frame
                        boxAnchor.SetType(RndStdIds::FLY_AT_CHAR);
                    }
                    // presumably these anchors are supported though not sure
                    assert(RndStdIds::FLY_AT_CHAR == boxAnchor.GetAnchorId()
                           || RndStdIds::FLY_AT_PARA == boxAnchor.GetAnchorId()
                           || boxAnchor.GetAnchorId() == RndStdIds::FLY_AT_PAGE);

                    if (!bMakeFrames && rNewAnchor.GetAnchorId() == RndStdIds::FLY_AS_CHAR)
                    {
                        // If the draw format is as-char, then it will be copied with bMakeFrames=false, but
                        // doing the same for the fly format would result in not making fly frames at all.
                        bMakeFrames = true;
                    }
                    SwFrameFormat* pDestTextBox
                        = CopyLayoutFormat(*pSourceTextBox, boxAnchor, bSetTextFlyAtt, bMakeFrames);

                    SwAttrSet aSet(pDest->GetAttrSet());
                    SwFormatContent aContent(
                        pDestTextBox->GetContent().GetContentIdx()->GetNode().GetStartNode());
                    aSet.Put(aContent);
                    pDest->SetFormatAttr(aSet);

                    // Link FLY and DRAW formats, so it becomes a text box
                    SdrObject* pNewObj = pDest->FindRealSdrObject();
                    if (bIsGroupObj && pNewObj
                        && pNewObj->getChildrenOfSdrObject()
                        && (pNewObj->getChildrenOfSdrObject()->GetObjCount() > it)
                        && pNewObj->getChildrenOfSdrObject()->GetObj(it))
                        pNewObj = pNewObj->getChildrenOfSdrObject()->GetObj(it);
                    pTextBoxNd->AddTextBox(pNewObj, pDestTextBox);
                    pDestTextBox->SetOtherTextBoxFormats(pTextBoxNd);
                }

                if (!bIsGroupObj)
                    break;
            }
        }
    }

    if (pDest->GetName().isEmpty())
    {
        // Format name should have unique name. Let's use object name as a fallback
        SdrObject *pObj = pDest->FindSdrObject();
        if (pObj)
            pDest->SetName(pObj->GetName());
    }

    return pDest;
}

//Load document from fdo#42534 under valgrind, drag the scrollbar down so full
//document layout is triggered. Close document before layout has completed, and
//SwAnchoredObject objects deleted by the deletion of layout remain referenced
//by the SwLayouter
void DocumentLayoutManager::ClearSwLayouterEntries()
{
    SwLayouter::ClearMovedFwdFrames( m_rDoc );
    SwLayouter::ClearObjsTmpConsiderWrapInfluence( m_rDoc );
    // #i65250#
    SwLayouter::ClearMoveBwdLayoutInfo( m_rDoc );
}

DocumentLayoutManager::~DocumentLayoutManager()
{
}

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