/* -*- 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 <memory>
#include <sal/config.h>
#include <sal/log.hxx>

#include <scitems.hxx>
#include <editeng/eeitem.hxx>
#include <svx/svdpool.hxx>
#include <svx/svdobj.hxx>
#include <editeng/editeng.hxx>
#include <editeng/editobj.hxx>
#include <editeng/flditem.hxx>
#include <editeng/fhgtitem.hxx>
#include <editeng/unoprnms.hxx>
#include <editeng/unofored.hxx>
#include <utility>
#include <vcl/svapp.hxx>

#include <editeng/unoipset.hxx>
#include <textuno.hxx>
#include <fielduno.hxx>
#include <editsrc.hxx>
#include <docsh.hxx>
#include <editutil.hxx>
#include <miscuno.hxx>
#include <cellsuno.hxx>
#include <cellvalue.hxx>
#include <cellform.hxx>
#include <patattr.hxx>
#include <docfunc.hxx>
#include <scmod.hxx>

using namespace com::sun::star;

static const SvxItemPropertySet * lcl_GetHdFtPropertySet()
{
    static const SvxItemPropertySet aHdFtPropertySet_Impl = [] {
        static SfxItemPropertyMapEntry aHdFtPropertyMap_Impl[] =
        {
            SVX_UNOEDIT_CHAR_PROPERTIES,
            SVX_UNOEDIT_FONT_PROPERTIES,
            SVX_UNOEDIT_PARA_PROPERTIES,
            SVX_UNOEDIT_NUMBERING_PROPERTY,    // for completeness of service ParagraphProperties
        };

        //  modify PropertyMap to include CONVERT_TWIPS flag for font height
        //  (headers/footers are in twips)

        for (auto & rEntry : aHdFtPropertyMap_Impl)
        {
            if ( ( rEntry.nWID == EE_CHAR_FONTHEIGHT ||
                   rEntry.nWID == EE_CHAR_FONTHEIGHT_CJK ||
                   rEntry.nWID == EE_CHAR_FONTHEIGHT_CTL ) &&
                 rEntry.nMemberId == MID_FONTHEIGHT )
            {
                rEntry.nMemberId |= CONVERT_TWIPS;
            }
        }

        return SvxItemPropertySet(aHdFtPropertyMap_Impl, SdrObject::GetGlobalDrawObjectItemPool());
    }();
    return &aHdFtPropertySet_Impl;
}

SC_SIMPLE_SERVICE_INFO( ScHeaderFooterContentObj, u"ScHeaderFooterContentObj"_ustr, u"com.sun.star.sheet.HeaderFooterContent"_ustr )
SC_SIMPLE_SERVICE_INFO( ScHeaderFooterTextObj, u"ScHeaderFooterTextObj"_ustr, u"stardiv.one.Text.Text"_ustr )

ScHeaderFooterContentObj::ScHeaderFooterContentObj()
{
}

ScHeaderFooterContentObj::~ScHeaderFooterContentObj() {}

const EditTextObject* ScHeaderFooterContentObj::GetLeftEditObject() const
{
    return mxLeftText->GetTextObject();
}

const EditTextObject* ScHeaderFooterContentObj::GetCenterEditObject() const
{
    return mxCenterText->GetTextObject();
}

const EditTextObject* ScHeaderFooterContentObj::GetRightEditObject() const
{
    return mxRightText->GetTextObject();
}

// XHeaderFooterContent

uno::Reference<text::XText> SAL_CALL ScHeaderFooterContentObj::getLeftText()
{
    SolarMutexGuard aGuard;
    uno::Reference<text::XText> xInt(*mxLeftText, uno::UNO_QUERY);
    return xInt;
}

uno::Reference<text::XText> SAL_CALL ScHeaderFooterContentObj::getCenterText()
{
    SolarMutexGuard aGuard;
    uno::Reference<text::XText> xInt(*mxCenterText, uno::UNO_QUERY);
    return xInt;
}

uno::Reference<text::XText> SAL_CALL ScHeaderFooterContentObj::getRightText()
{
    SolarMutexGuard aGuard;
    uno::Reference<text::XText> xInt(*mxRightText, uno::UNO_QUERY);
    return xInt;
}

rtl::Reference<ScHeaderFooterContentObj> ScHeaderFooterContentObj::getImplementation(
                                const uno::Reference<sheet::XHeaderFooterContent>& rObj)
{
    return dynamic_cast<ScHeaderFooterContentObj*>(rObj.get());
}

void ScHeaderFooterContentObj::Init( const EditTextObject* pLeft,
                                                    const EditTextObject* pCenter,
                                                    const EditTextObject* pRight )
{
    uno::Reference<css::sheet::XHeaderFooterContent> xThis(this);
    mxLeftText = rtl::Reference<ScHeaderFooterTextObj>(new ScHeaderFooterTextObj(xThis, ScHeaderFooterPart::LEFT, pLeft));
    mxCenterText = rtl::Reference<ScHeaderFooterTextObj>(new ScHeaderFooterTextObj(xThis, ScHeaderFooterPart::CENTER, pCenter));
    mxRightText = rtl::Reference<ScHeaderFooterTextObj>(new ScHeaderFooterTextObj(xThis, ScHeaderFooterPart::RIGHT, pRight));
}

ScHeaderFooterTextData::ScHeaderFooterTextData(
    uno::WeakReference<sheet::XHeaderFooterContent> xContent, ScHeaderFooterPart nP, const EditTextObject* pTextObj) :
    mpTextObj(pTextObj ? pTextObj->Clone() : nullptr),
    xContentObj(std::move( xContent )),
    nPart( nP ),
    bDataValid(false)
{
}

ScHeaderFooterTextData::~ScHeaderFooterTextData()
{
    SolarMutexGuard aGuard;     //  needed for EditEngine dtor

    pForwarder.reset();
    pEditEngine.reset();
}

SvxTextForwarder* ScHeaderFooterTextData::GetTextForwarder()
{
    if (!pEditEngine)
    {
        rtl::Reference<SfxItemPool> pEnginePool = EditEngine::CreatePool();
        std::unique_ptr<ScHeaderEditEngine> pHdrEngine(new ScHeaderEditEngine( pEnginePool.get() ));

        pHdrEngine->EnableUndo( false );
        pHdrEngine->SetRefMapMode(MapMode(MapUnit::MapTwip));

        //  default font must be set, independently of document
        ScDocShell* pDocSh(dynamic_cast<ScDocShell*>(SfxObjectShell::Current()));
        std::unique_ptr<CellAttributeHelper> pTmp;
        const ScPatternAttr* pCellAttributeDefault(nullptr);

        if (nullptr != pDocSh)
        {
            // we can use default CellAttribute from ScDocument
            pCellAttributeDefault = &pDocSh->GetDocument().getCellAttributeHelper().getDefaultCellAttribute();
        }
        else
        {
            // no access to ScDocument, use temporary default CellAttributeHelper
            // was: "use global pool from module" which is usually ScMessagePool
            // and gets set in ScTabViewObj::SelectionChanged() by
            // ScFormatShell::ScFormatShell which  calls
            //    SetPool( &pTabViewShell->GetPool() );
            pTmp.reset(new CellAttributeHelper(SC_MOD()->GetPool()));
            pCellAttributeDefault = &pTmp->getDefaultCellAttribute();
        }

        SfxItemSet aDefaults( pHdrEngine->GetEmptyItemSet() );
        pCellAttributeDefault->FillEditItemSet( &aDefaults );
        //  FillEditItemSet adjusts font height to 1/100th mm,
        //  but for header/footer twips is needed, as in the PatternAttr:
        aDefaults.Put( pCellAttributeDefault->GetItem(ATTR_FONT_HEIGHT).CloneSetWhich(EE_CHAR_FONTHEIGHT) );
        aDefaults.Put( pCellAttributeDefault->GetItem(ATTR_CJK_FONT_HEIGHT).CloneSetWhich(EE_CHAR_FONTHEIGHT_CJK) ) ;
        aDefaults.Put( pCellAttributeDefault->GetItem(ATTR_CTL_FONT_HEIGHT).CloneSetWhich(EE_CHAR_FONTHEIGHT_CTL) );
        pHdrEngine->SetDefaults( aDefaults );

        ScHeaderFieldData aData;
        ScHeaderFooterTextObj::FillDummyFieldData( aData );
        pHdrEngine->SetData( aData );

        pEditEngine = std::move(pHdrEngine);
        pForwarder.reset( new SvxEditEngineForwarder(*pEditEngine) );
    }

    if (bDataValid)
        return pForwarder.get();

    if (mpTextObj)
        pEditEngine->SetTextCurrentDefaults(*mpTextObj);

    bDataValid = true;
    return pForwarder.get();
}

void ScHeaderFooterTextData::UpdateData()
{
    if (pEditEngine)
    {
        mpTextObj = pEditEngine->CreateTextObject();
    }
}

void ScHeaderFooterTextData::UpdateData(EditEngine& rEditEngine)
{
    mpTextObj = rEditEngine.CreateTextObject();
    bDataValid = false;
}

ScHeaderFooterTextObj::ScHeaderFooterTextObj(
    const uno::WeakReference<sheet::XHeaderFooterContent>& xContent, ScHeaderFooterPart nP, const EditTextObject* pTextObj) :
    aTextData(xContent, nP, pTextObj)
{
    //  ScHeaderFooterTextData acquires rContent
    //  pUnoText is created on demand (getString/setString work without it)
}

void ScHeaderFooterTextObj::CreateUnoText_Impl()
{
    if (!mxUnoText.is())
    {
        //  can't be aggregated because getString/setString is handled here
        ScHeaderFooterEditSource aEditSrc(aTextData);
        mxUnoText.set(new SvxUnoText(&aEditSrc, lcl_GetHdFtPropertySet(), uno::Reference<text::XText>()));
    }
}

ScHeaderFooterTextObj::~ScHeaderFooterTextObj() {}

const EditTextObject* ScHeaderFooterTextObj::GetTextObject() const
{
    return aTextData.GetTextObject();
}

const SvxUnoText& ScHeaderFooterTextObj::GetUnoText()
{
    if (!mxUnoText.is())
        CreateUnoText_Impl();
    return *mxUnoText;
}

// XText

uno::Reference<text::XTextCursor> SAL_CALL ScHeaderFooterTextObj::createTextCursor()
{
    SolarMutexGuard aGuard;
    return new ScHeaderFooterTextCursor( this );
}

uno::Reference<text::XTextCursor> SAL_CALL ScHeaderFooterTextObj::createTextCursorByRange(
                                    const uno::Reference<text::XTextRange>& aTextPosition )
{
    SolarMutexGuard aGuard;
    if (!mxUnoText.is())
        CreateUnoText_Impl();
    return mxUnoText->createTextCursorByRange(aTextPosition);
    //! like ScCellObj::createTextCursorByRange, if SvxUnoTextRange_getReflection available
}

void ScHeaderFooterTextObj::FillDummyFieldData( ScHeaderFieldData& rData )
{
    OUString aDummy(u"???"_ustr);
    rData.aTitle        = aDummy;
    rData.aLongDocName  = aDummy;
    rData.aShortDocName = aDummy;
    rData.aTabName      = aDummy;
    rData.nPageNo       = 1;
    rData.nTotalPages   = 99;
}

OUString SAL_CALL ScHeaderFooterTextObj::getString()
{
    SolarMutexGuard aGuard;
    OUString aRet;
    const EditTextObject* pData;

    uno::Reference<css::sheet::XHeaderFooterContent> xContentObj = aTextData.GetContentObj();
    if (!xContentObj.is())
        throw css::uno::RuntimeException(
            u"ScHeaderFooterTextObj::getString: no ContentObj"_ustr);

    rtl::Reference<ScHeaderFooterContentObj> pObj = ScHeaderFooterContentObj::getImplementation(xContentObj);

    switch ( aTextData.GetPart() )
    {
        case ScHeaderFooterPart::LEFT:
            pData = pObj->GetLeftEditObject();
        break;
        case ScHeaderFooterPart::CENTER:
            pData = pObj->GetCenterEditObject();
        break;
        case ScHeaderFooterPart::RIGHT:
            pData = pObj->GetRightEditObject();
        break;
        default:
            SAL_WARN("sc.ui","unexpected enum value of ScHeaderFooterPart");
            pData = nullptr;
    }

    if (pData)
    {
        // for pure text, no font info is needed in pool defaults
        ScHeaderEditEngine aEditEngine( EditEngine::CreatePool().get() );

        ScHeaderFieldData aData;
        FillDummyFieldData( aData );
        aEditEngine.SetData( aData );

        aEditEngine.SetTextCurrentDefaults(*pData);
        aRet = ScEditUtil::GetSpaceDelimitedString( aEditEngine );
    }
    return aRet;
}

void SAL_CALL ScHeaderFooterTextObj::setString( const OUString& aText )
{
    SolarMutexGuard aGuard;

    // for pure text, no font info is needed in pool defaults
    ScHeaderEditEngine aEditEngine(EditEngine::CreatePool().get());
    aEditEngine.SetTextCurrentDefaults( aText );
    aTextData.UpdateData(aEditEngine);
}

void SAL_CALL ScHeaderFooterTextObj::insertString( const uno::Reference<text::XTextRange>& xRange,
                                            const OUString& aString, sal_Bool bAbsorb )
{
    SolarMutexGuard aGuard;
    if (!mxUnoText.is())
        CreateUnoText_Impl();
    mxUnoText->insertString( xRange, aString, bAbsorb );
}

void SAL_CALL ScHeaderFooterTextObj::insertControlCharacter(
                                            const uno::Reference<text::XTextRange>& xRange,
                                            sal_Int16 nControlCharacter, sal_Bool bAbsorb )
{
    SolarMutexGuard aGuard;
    if (!mxUnoText.is())
        CreateUnoText_Impl();
    mxUnoText->insertControlCharacter( xRange, nControlCharacter, bAbsorb );
}

void SAL_CALL ScHeaderFooterTextObj::insertTextContent(
                                            const uno::Reference<text::XTextRange >& xRange,
                                            const uno::Reference<text::XTextContent >& xContent,
                                            sal_Bool bAbsorb )
{
    SolarMutexGuard aGuard;
    if ( xContent.is() && xRange.is() )
    {
        ScEditFieldObj* pHeaderField = dynamic_cast<ScEditFieldObj*>( xContent.get() );

        SvxUnoTextRangeBase* pTextRange =
            comphelper::getFromUnoTunnel<ScHeaderFooterTextCursor>( xRange );

        if ( pHeaderField && !pHeaderField->IsInserted() && pTextRange )
        {
            SvxEditSource* pEditSource = pTextRange->GetEditSource();
            ESelection aSelection(pTextRange->GetSelection());

            if (!bAbsorb)
            {
                //  don't replace -> append at end
                aSelection.Adjust();
                aSelection.nStartPara = aSelection.nEndPara;
                aSelection.nStartPos  = aSelection.nEndPos;
            }

            SvxFieldItem aItem(pHeaderField->CreateFieldItem());

            SvxTextForwarder* pForwarder = pEditSource->GetTextForwarder();
            pForwarder->QuickInsertField( aItem, aSelection );
            pEditSource->UpdateData();

            //  new selection: a digit
            aSelection.Adjust();
            aSelection.nEndPara = aSelection.nStartPara;
            aSelection.nEndPos = aSelection.nStartPos + 1;

            uno::Reference<text::XTextRange> xTextRange;
            switch ( aTextData.GetPart() )
            {
                case ScHeaderFooterPart::LEFT:
                    xTextRange = aTextData.GetContentObj()->getLeftText();
                break;
                case ScHeaderFooterPart::CENTER:
                    xTextRange = aTextData.GetContentObj()->getCenterText();
                break;
                case ScHeaderFooterPart::RIGHT:
                    xTextRange = aTextData.GetContentObj()->getRightText();
                break;
            }

            pHeaderField->InitDoc(xTextRange, std::make_unique<ScHeaderFooterEditSource>(aTextData), aSelection);

            //  for bAbsorb=FALSE, the new selection must be behind the inserted content
            //  (the xml filter relies on this)
            if (!bAbsorb)
                aSelection.nStartPos = aSelection.nEndPos;

            pTextRange->SetSelection( aSelection );

            return;
        }
    }

    if (!mxUnoText.is())
        CreateUnoText_Impl();
    mxUnoText->insertTextContent( xRange, xContent, bAbsorb );
}

void SAL_CALL ScHeaderFooterTextObj::removeTextContent(
                                            const uno::Reference<text::XTextContent>& xContent )
{
    SolarMutexGuard aGuard;
    if ( xContent.is() )
    {
        ScEditFieldObj* pHeaderField = dynamic_cast<ScEditFieldObj*>(xContent.get());
        if ( pHeaderField && pHeaderField->IsInserted() )
        {
            //! check if the field is in this cell
            pHeaderField->DeleteField();
            return;
        }
    }
    if (!mxUnoText.is())
        CreateUnoText_Impl();
    mxUnoText->removeTextContent( xContent );
}

uno::Reference<text::XText> SAL_CALL ScHeaderFooterTextObj::getText()
{
    SolarMutexGuard aGuard;
    if (!mxUnoText.is())
        CreateUnoText_Impl();
    return mxUnoText->getText();
}

uno::Reference<text::XTextRange> SAL_CALL ScHeaderFooterTextObj::getStart()
{
    SolarMutexGuard aGuard;
    if (!mxUnoText.is())
        CreateUnoText_Impl();
    return mxUnoText->getStart();
}

uno::Reference<text::XTextRange> SAL_CALL ScHeaderFooterTextObj::getEnd()
{
    SolarMutexGuard aGuard;
    if (!mxUnoText.is())
        CreateUnoText_Impl();
    return mxUnoText->getEnd();
}

// XTextFieldsSupplier

uno::Reference<container::XEnumerationAccess> SAL_CALL ScHeaderFooterTextObj::getTextFields()
{
    SolarMutexGuard aGuard;
    // all fields
    return new ScHeaderFieldsObj(aTextData);
}

uno::Reference<container::XNameAccess> SAL_CALL ScHeaderFooterTextObj::getTextFieldMasters()
{
    //  this does not exists in Calc (?)
    return nullptr;
}

// XTextRangeMover

void SAL_CALL ScHeaderFooterTextObj::moveTextRange(
                                        const uno::Reference<text::XTextRange>& xRange,
                                        sal_Int16 nParagraphs )
{
    SolarMutexGuard aGuard;
    if (!mxUnoText.is())
        CreateUnoText_Impl();
    mxUnoText->moveTextRange( xRange, nParagraphs );
}

// XEnumerationAccess

uno::Reference<container::XEnumeration> SAL_CALL ScHeaderFooterTextObj::createEnumeration()
{
    SolarMutexGuard aGuard;
    if (!mxUnoText.is())
        CreateUnoText_Impl();
    return mxUnoText->createEnumeration();
}

// XElementAccess

uno::Type SAL_CALL ScHeaderFooterTextObj::getElementType()
{
    SolarMutexGuard aGuard;
    if (!mxUnoText.is())
        CreateUnoText_Impl();
    return mxUnoText->getElementType();
}

sal_Bool SAL_CALL ScHeaderFooterTextObj::hasElements()
{
    SolarMutexGuard aGuard;
    if (!mxUnoText.is())
        CreateUnoText_Impl();
    return mxUnoText->hasElements();
}

ScCellTextCursor::ScCellTextCursor(ScCellObj& rText) :
    SvxUnoTextCursor( rText.GetUnoText() ),
    mxTextObj( &rText )
{
}

ScCellTextCursor::~ScCellTextCursor() noexcept
{
}

// SvxUnoTextCursor methods reimplemented here to return the right objects:

uno::Reference<text::XText> SAL_CALL ScCellTextCursor::getText()
{
    return mxTextObj;
}

uno::Reference<text::XTextRange> SAL_CALL ScCellTextCursor::getStart()
{
    SolarMutexGuard aGuard;

    //! use other object for range than cursor?

    rtl::Reference<ScCellTextCursor> pNew = new ScCellTextCursor( *this );

    ESelection aNewSel(GetSelection());
    aNewSel.nEndPara = aNewSel.nStartPara;
    aNewSel.nEndPos  = aNewSel.nStartPos;
    pNew->SetSelection( aNewSel );

    return static_cast<SvxUnoTextRangeBase*>(pNew.get());
}

uno::Reference<text::XTextRange> SAL_CALL ScCellTextCursor::getEnd()
{
    SolarMutexGuard aGuard;

    //! use other object for range than cursor?

    rtl::Reference<ScCellTextCursor> pNew = new ScCellTextCursor( *this );

    ESelection aNewSel(GetSelection());
    aNewSel.nStartPara = aNewSel.nEndPara;
    aNewSel.nStartPos  = aNewSel.nEndPos;
    pNew->SetSelection( aNewSel );

    return static_cast<SvxUnoTextRangeBase*>(pNew.get());
}

// XUnoTunnel

UNO3_GETIMPLEMENTATION2_IMPL(ScCellTextCursor, SvxUnoTextCursor);

ScHeaderFooterTextCursor::ScHeaderFooterTextCursor(rtl::Reference<ScHeaderFooterTextObj> const & rText) :
    SvxUnoTextCursor( rText->GetUnoText() ),
    rTextObj( rText )
{}

ScHeaderFooterTextCursor::~ScHeaderFooterTextCursor() noexcept {};

// SvxUnoTextCursor methods reimplemented here to return the right objects:

uno::Reference<text::XText> SAL_CALL ScHeaderFooterTextCursor::getText()
{
    SolarMutexGuard aGuard;
    return rTextObj;
}

uno::Reference<text::XTextRange> SAL_CALL ScHeaderFooterTextCursor::getStart()
{
    SolarMutexGuard aGuard;

    //! use other object for range than cursor?

    rtl::Reference<ScHeaderFooterTextCursor> pNew = new ScHeaderFooterTextCursor( *this );

    ESelection aNewSel(GetSelection());
    aNewSel.nEndPara = aNewSel.nStartPara;
    aNewSel.nEndPos  = aNewSel.nStartPos;
    pNew->SetSelection( aNewSel );

    return static_cast<SvxUnoTextRangeBase*>(pNew.get());
}

uno::Reference<text::XTextRange> SAL_CALL ScHeaderFooterTextCursor::getEnd()
{
    SolarMutexGuard aGuard;

    //! use other object for range than cursor?

    rtl::Reference<ScHeaderFooterTextCursor> pNew = new ScHeaderFooterTextCursor( *this );

    ESelection aNewSel(GetSelection());
    aNewSel.nStartPara = aNewSel.nEndPara;
    aNewSel.nStartPos  = aNewSel.nEndPos;
    pNew->SetSelection( aNewSel );

    return static_cast<SvxUnoTextRangeBase*>(pNew.get());
}

// XUnoTunnel

UNO3_GETIMPLEMENTATION2_IMPL(ScHeaderFooterTextCursor, SvxUnoTextCursor);

ScDrawTextCursor::ScDrawTextCursor( uno::Reference<text::XText> xParent,
                                    const SvxUnoTextBase& rText ) :
    SvxUnoTextCursor( rText ),
    xParentText(std::move( xParent ))

{
}

ScDrawTextCursor::~ScDrawTextCursor() noexcept
{
}

// SvxUnoTextCursor methods reimplemented here to return the right objects:

uno::Reference<text::XText> SAL_CALL ScDrawTextCursor::getText()
{
    SolarMutexGuard aGuard;
    return xParentText;
}

uno::Reference<text::XTextRange> SAL_CALL ScDrawTextCursor::getStart()
{
    SolarMutexGuard aGuard;

    //! use other object for range than cursor?

    rtl::Reference<ScDrawTextCursor> pNew = new ScDrawTextCursor( *this );

    ESelection aNewSel(GetSelection());
    aNewSel.nEndPara = aNewSel.nStartPara;
    aNewSel.nEndPos  = aNewSel.nStartPos;
    pNew->SetSelection( aNewSel );

    return static_cast<SvxUnoTextRangeBase*>(pNew.get());
}

uno::Reference<text::XTextRange> SAL_CALL ScDrawTextCursor::getEnd()
{
    SolarMutexGuard aGuard;

    //! use other object for range than cursor?

    rtl::Reference<ScDrawTextCursor> pNew = new ScDrawTextCursor( *this );

    ESelection aNewSel(GetSelection());
    aNewSel.nStartPara = aNewSel.nEndPara;
    aNewSel.nStartPos  = aNewSel.nEndPos;
    pNew->SetSelection( aNewSel );

    return static_cast<SvxUnoTextRangeBase*>(pNew.get());
}

// XUnoTunnel

UNO3_GETIMPLEMENTATION2_IMPL(ScDrawTextCursor, SvxUnoTextCursor);

ScSimpleEditSourceHelper::ScSimpleEditSourceHelper()
{
    rtl::Reference<SfxItemPool> pEnginePool = EditEngine::CreatePool();
    pEnginePool->SetDefaultMetric( MapUnit::Map100thMM );
    pEditEngine.reset( new ScFieldEditEngine(nullptr, pEnginePool.get(), nullptr, true) );     // TRUE: become owner of pool
    pForwarder.reset( new SvxEditEngineForwarder( *pEditEngine ) );
    pOriginalSource.reset( new ScSimpleEditSource( pForwarder.get() ) );
}

ScSimpleEditSourceHelper::~ScSimpleEditSourceHelper()
{
    SolarMutexGuard aGuard;     //  needed for EditEngine dtor

    pOriginalSource.reset();
    pForwarder.reset();
    pEditEngine.reset();
}

ScEditEngineTextObj::ScEditEngineTextObj() :
    SvxUnoText( GetOriginalSource(), ScCellObj::GetEditPropertySet(), uno::Reference<text::XText>() )
{
}

ScEditEngineTextObj::~ScEditEngineTextObj() noexcept
{
}

void ScEditEngineTextObj::SetText( const EditTextObject& rTextObject )
{
    GetEditEngine()->SetTextCurrentDefaults( rTextObject );

    ESelection aSel;
    ::GetSelection( aSel, GetEditSource()->GetTextForwarder() );
    SetSelection( aSel );
}

std::unique_ptr<EditTextObject> ScEditEngineTextObj::CreateTextObject()
{
    return GetEditEngine()->CreateTextObject();
}

ScCellTextData::ScCellTextData(ScDocShell* pDocSh, const ScAddress& rP) :
    pDocShell( pDocSh ),
    aCellPos( rP ),
    bDataValid( false ),
    bInUpdate( false ),
    bDirty( false ),
    bDoUpdate( true )
{
    if (pDocShell)
        pDocShell->GetDocument().AddUnoObject(*this);
}

ScCellTextData::~ScCellTextData()
{
    SolarMutexGuard aGuard;     //  needed for EditEngine dtor

    if (pDocShell)
    {
        pDocShell->GetDocument().RemoveUnoObject(*this);
        pDocShell->GetDocument().DisposeFieldEditEngine(pEditEngine);
    }
    else
        pEditEngine.reset();

    pForwarder.reset();

    pOriginalSource.reset();
}

ScCellEditSource* ScCellTextData::GetOriginalSource()
{
    if (!pOriginalSource)
        pOriginalSource.reset( new ScCellEditSource(pDocShell, aCellPos) );
    return pOriginalSource.get();
}

SvxTextForwarder* ScCellTextData::GetTextForwarder()
{
    if (!pEditEngine)
    {
        if ( pDocShell )
        {
            ScDocument& rDoc = pDocShell->GetDocument();
            pEditEngine = rDoc.CreateFieldEditEngine();
        }
        else
        {
            rtl::Reference<SfxItemPool> pEnginePool = EditEngine::CreatePool();
            pEditEngine.reset( new ScFieldEditEngine(nullptr, pEnginePool.get(), nullptr, true) );
        }
        //  currently, GetPortions doesn't work if UpdateMode is sal_False,
        //  this will be fixed (in EditEngine) by src600
//      pEditEngine->SetUpdateMode( sal_False );
        pEditEngine->EnableUndo( false );
        if (pDocShell)
            pEditEngine->SetRefDevice(pDocShell->GetRefDevice());
        else
            pEditEngine->SetRefMapMode(MapMode(MapUnit::Map100thMM));
        pForwarder.reset( new SvxEditEngineForwarder(*pEditEngine) );
    }

    if (bDataValid)
        return pForwarder.get();

    if (pDocShell)
    {
        ScDocument& rDoc = pDocShell->GetDocument();

        SfxItemSet aDefaults( pEditEngine->GetEmptyItemSet() );
        if( const ScPatternAttr* pPattern =
                rDoc.GetPattern( aCellPos.Col(), aCellPos.Row(), aCellPos.Tab() ) )
        {
            pPattern->FillEditItemSet( &aDefaults );
            pPattern->FillEditParaItems( &aDefaults );  // including alignment etc. (for reading)
        }

        ScRefCellValue aCell(rDoc, aCellPos);
        if (aCell.getType() == CELLTYPE_EDIT)
        {
            const EditTextObject* pObj = aCell.getEditText();
            pEditEngine->SetTextNewDefaults(*pObj, aDefaults);
        }
        else
        {
            sal_uInt32 nFormat = rDoc.GetNumberFormat(ScRange(aCellPos));
            OUString aText = ScCellFormat::GetInputString(aCell, nFormat, nullptr, rDoc);
            // tdf#157568 check if edit engine already has text
            // If the input string is empty but the edit engine's existing
            // text is not empty, force update of the edit engine's text.
            // Otherwise, the edit engine will still to be set to its
            // existing text.
            // Note: CppunitTest_sc_macros_test testTdf116127 will fail if
            // pEditEngine->SetTextNewDefaults() is passed an empty string
            // and pEditEngine->GetText() is empty string.
            if (!aText.isEmpty() || !pEditEngine->GetText().isEmpty())
                pEditEngine->SetTextNewDefaults(aText, aDefaults);
            else
                pEditEngine->SetDefaults(aDefaults);
        }
    }

    bDataValid = true;
    return pForwarder.get();
}

void ScCellTextData::UpdateData()
{
    if ( bDoUpdate )
    {
        OSL_ENSURE(pEditEngine != nullptr, "no EditEngine for UpdateData()");
        if ( pDocShell && pEditEngine )
        {
            //  during the own UpdateData call, bDataValid must not be reset,
            //  or things like attributes after the text would be lost
            //  (are not stored in the cell)
            bInUpdate = true;   // prevents bDataValid from being reset
            pDocShell->GetDocFunc().PutData(aCellPos, *pEditEngine, true); // always as text

            bInUpdate = false;
            bDirty = false;
        }
    }
    else
        bDirty = true;
}

void ScCellTextData::Notify( SfxBroadcaster&, const SfxHint& rHint )
{
    const SfxHintId nId = rHint.GetId();
    if ( nId == SfxHintId::Dying )
    {
        pDocShell = nullptr;                       // invalid now

        pForwarder.reset();
        pEditEngine.reset();     // EditEngine uses document's pool
    }
    else if ( nId == SfxHintId::DataChanged )
    {
        if (!bInUpdate)                         // not for own UpdateData calls
            bDataValid = false;                 // text has to be read from the cell again
    }
}

ScCellTextObj::ScCellTextObj(ScDocShell* pDocSh, const ScAddress& rP) :
    ScCellTextData( pDocSh, rP ),
    SvxUnoText( GetOriginalSource(), ScCellObj::GetEditPropertySet(), uno::Reference<text::XText>() )
{
}

ScCellTextObj::~ScCellTextObj() COVERITY_NOEXCEPT_FALSE
{
}

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