/* -*- 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 <utility>

#include <vcl/virdev.hxx>

#include <svx/svdundo.hxx>

#include <undobase.hxx>

#include <refundo.hxx>

#include <docsh.hxx>

#include <tabvwsh.hxx>

#include <undoolk.hxx>

#include <undodraw.hxx>

#include <dbdata.hxx>

#include <attrib.hxx>

#include <queryparam.hxx>

#include <subtotalparam.hxx>

#include <rowheightcontext.hxx>

#include <column.hxx>

#include <sortparam.hxx>

#include <columnspanset.hxx>

#include <undomanager.hxx>

#include <sizedev.hxx>

ScSimpleUndo::ScSimpleUndo( ScDocShell& rDocSh ) :

    rDocShell( rDocSh ),

    mnViewShellId(-1)

{

    if (ScTabViewShell* pViewShell = ScTabViewShell::GetActiveViewShell())

        mnViewShellId = pViewShell->GetViewShellId();

}

ViewShellId ScSimpleUndo::GetViewShellId() const

{

    return mnViewShellId;

}

bool ScSimpleUndo::SetViewMarkData( const ScMarkData& rMarkData )

{

    if ( IsPaintLocked() )

        return false;

    ScTabViewShell* pViewShell = ScTabViewShell::GetActiveViewShell();

    if ( !pViewShell )

        return false;

    pViewShell->SetMarkData( rMarkData );

    return true;

}

bool ScSimpleUndo::Merge( SfxUndoAction *pNextAction )

{

    // A SdrUndoGroup for updating detective arrows can belong

    // to each Undo-Action.

    // DetectiveRefresh is always called next,

    // the SdrUndoGroup is encapsulated in a ScUndoDraw action.

    // AddUndoAction is only called with bTryMerg=sal_True

    // for automatic update.

    if ( !pDetectiveUndo && dynamic_cast<const ScUndoDraw*>( pNextAction) !=  nullptr )

    {

        // Take SdrUndoAction from ScUndoDraw Action,

        // ScUndoDraw is later deleted by the UndoManager

        ScUndoDraw* pCalcUndo = static_cast<ScUndoDraw*>(pNextAction);

        pDetectiveUndo = pCalcUndo->ReleaseDrawUndo();

        return true;

    }

    return false;

}

void ScSimpleUndo::BeginUndo()

{

    rDocShell.SetInUndo( true );

    ScTabViewShell* pViewShell = ScTabViewShell::GetActiveViewShell();

    if (pViewShell)

        pViewShell->HideAllCursors();       // for example due to merged cells

    //  detective updates happened last, must be undone first

    if (pDetectiveUndo)

        pDetectiveUndo->Undo();

}

namespace

{

    class DisableUndoGuard

    {

    private:

        ScDocument& m_rDoc;

        bool m_bUndoEnabled;

    public:

        explicit DisableUndoGuard(ScDocShell& rDocShell)

            : m_rDoc(rDocShell.GetDocument())

            , m_bUndoEnabled(m_rDoc.IsUndoEnabled())

        {

            m_rDoc.EnableUndo(false);

        }

        ~DisableUndoGuard()

        {

            m_rDoc.EnableUndo(m_bUndoEnabled);

        }

    };

}

void ScSimpleUndo::EndUndo()

{

    // After undo we need to restore the sheet views as well.

    SyncSheetViews();

    {

        // rhbz#1352881 Temporarily turn off undo generation during

        // SetDocumentModified

        DisableUndoGuard aGuard(rDocShell);

        rDocShell.SetDocumentModified();

    }

    ScTabViewShell* pViewShell = ScTabViewShell::GetActiveViewShell();

    if (pViewShell)

    {

        pViewShell->UpdateAutoFillMark();

        pViewShell->UpdateInputHandler();

        pViewShell->ShowAllCursors();

    }

    rDocShell.SetInUndo( false );

}

void ScSimpleUndo::BeginRedo()

{

    rDocShell.SetInUndo( true );   //! own Flag for Redo?

    ScTabViewShell* pViewShell = ScTabViewShell::GetActiveViewShell();

    if (pViewShell)

        pViewShell->HideAllCursors();       // for example due to merged cells

}

void ScSimpleUndo::EndRedo()

{

    if (pDetectiveUndo)

        pDetectiveUndo->Redo();

    // After redo we need to restore the sheet views as well.

    SyncSheetViews();

    {

        // rhbz#1352881 Temporarily turn off undo generation during

        // SetDocumentModified

        DisableUndoGuard aGuard(rDocShell);

        rDocShell.SetDocumentModified();

    }

    ScTabViewShell* pViewShell = ScTabViewShell::GetActiveViewShell();

    if (pViewShell)

    {

        pViewShell->UpdateAutoFillMark();

        pViewShell->UpdateInputHandler();

        pViewShell->ShowAllCursors();

    }

    rDocShell.SetInUndo( false );

}

void ScSimpleUndo::SyncSheetViews()

{

    ScViewData* pViewData = ScDocShell::GetViewData();

    if (!pViewData)

        return;

    ScDocument& rDocument = rDocShell.GetDocument();

    SCTAB nDefaultViewTable = rDocument.GetDefaultViewTableNumber(pViewData->GetTabNumber());

    rDocument.SyncSheetViews(nDefaultViewTable);

}

void ScSimpleUndo::BroadcastChanges( const ScRange& rRange )

{

    ScDocument& rDoc = rDocShell.GetDocument();

    rDoc.BroadcastCells(rRange, SfxHintId::ScDataChanged);

}

namespace {

class SpanBroadcaster : public sc::ColumnSpanSet::ColumnAction

{

    ScDocument& mrDoc;

    SCTAB mnCurTab;

    SCCOL mnCurCol;

public:

    explicit SpanBroadcaster( ScDocument& rDoc ) : mrDoc(rDoc), mnCurTab(-1), mnCurCol(-1) {}

    virtual void startColumn( ScColumn* pCol ) override

    {

        mnCurTab = pCol->GetTab();

        mnCurCol = pCol->GetCol();

    }

    virtual void execute( SCROW nRow1, SCROW nRow2, bool bVal ) override

    {

        if (!bVal)

            return;

        ScRange aRange(mnCurCol, nRow1, mnCurTab, mnCurCol, nRow2, mnCurTab);

        mrDoc.BroadcastCells(aRange, SfxHintId::ScDataChanged);

    };

};

}

void ScSimpleUndo::BroadcastChanges( const DataSpansType& rSpans )

{

    ScDocument& rDoc = rDocShell.GetDocument();

    SpanBroadcaster aBroadcaster(rDoc);

    for (const auto& rEntry : rSpans)

    {

        const sc::ColumnSpanSet& rSet = *rEntry.second;

        rSet.executeColumnAction(rDoc, aBroadcaster);

    }

}

void ScSimpleUndo::ShowTable( SCTAB nTab )

{

    ScTabViewShell* pViewShell = ScTabViewShell::GetActiveViewShell();

    if (pViewShell)

        pViewShell->SetTabNo( nTab );

}

void ScSimpleUndo::ShowTable( const ScRange& rRange )

{

    ScTabViewShell* pViewShell = ScTabViewShell::GetActiveViewShell();

    if (pViewShell)

    {

        SCTAB nStart = rRange.aStart.Tab();

        SCTAB nEnd   = rRange.aEnd.Tab();

        SCTAB nTab = pViewShell->GetViewData().GetTabNumber();

        if ( nTab < nStart || nTab > nEnd )                     // if not in range:

            pViewShell->SetTabNo( nStart );                     // at beginning of the range

    }

}

ScBlockUndo::ScBlockUndo( ScDocShell& rDocSh, const ScRange& rRange,

                                            ScBlockUndoMode eBlockMode ) :

    ScSimpleUndo( rDocSh ),

    aBlockRange( rRange ),

    eMode( eBlockMode )

{

    pDrawUndo = GetSdrUndoAction( &rDocShell.GetDocument() );

}

ScBlockUndo::~ScBlockUndo()

{

    pDrawUndo.reset();

}

void ScBlockUndo::BeginUndo()

{

    ScSimpleUndo::BeginUndo();

    EnableDrawAdjust( &rDocShell.GetDocument(), false );

}

void ScBlockUndo::EndUndo()

{

    if (eMode == SC_UNDO_AUTOHEIGHT)

        AdjustHeight();

    EnableDrawAdjust( &rDocShell.GetDocument(), true );

    DoSdrUndoAction( pDrawUndo.get(), &rDocShell.GetDocument() );

    // tdf#161712 invoke ScSimpleUndo::EndUndo() before ShowBlock()

    // If this is an instance of ScUndoAutoFill, ShowBlock() will invoke

    // ScTabViewShell::MoveCursorAbs() which will delete this instance

    // so invoke ScSimpleUndo::EndUndo() first.

    ScSimpleUndo::EndUndo();

    ShowBlock();

}

void ScBlockUndo::EndRedo()

{

    if (eMode == SC_UNDO_AUTOHEIGHT)

        AdjustHeight();

    ShowBlock();

    ScSimpleUndo::EndRedo();

}

bool ScBlockUndo::AdjustHeight()

{

    ScDocument& rDoc = rDocShell.GetDocument();

    ScSizeDeviceProvider aProv(rDocShell);

    double fZoomX( 1.0 );

    double fZoomY = fZoomX;

    double nPPTX, nPPTY;

    ScTabViewShell* pViewShell = ScTabViewShell::GetActiveViewShell();

    if (pViewShell)

    {

        if (aProv.IsPrinter())

        {

            nPPTX = aProv.GetPPTX();

            nPPTY = aProv.GetPPTY();

        }

        else

        {

            ScViewData& rData = pViewShell->GetViewData();

            nPPTX = rData.GetPPTX();

            nPPTY = rData.GetPPTY();

            fZoomX = rData.GetZoomX();

            fZoomY = rData.GetZoomY();

        }

    }

    else

    {

        // Leave zoom at 100

        nPPTX = ScGlobal::nScreenPPTX;

        nPPTY = ScGlobal::nScreenPPTY;

    }

    sc::RowHeightContext aCxt(rDoc.MaxRow(), nPPTX, nPPTY, fZoomX, fZoomY, aProv.GetDevice());

    bool bRet = rDoc.SetOptimalHeight(

        aCxt, aBlockRange.aStart.Row(), aBlockRange.aEnd.Row(), aBlockRange.aStart.Tab(), true);

    if (bRet)

    {

        // tdf#76183: recalculate objects' positions

        rDoc.SetDrawPageSize(aBlockRange.aStart.Tab());

        rDocShell.PostPaint( 0,      aBlockRange.aStart.Row(), aBlockRange.aStart.Tab(),

                              rDoc.MaxCol(), rDoc.MaxRow(),                   aBlockRange.aEnd.Tab(),

                              PaintPartFlags::Grid | PaintPartFlags::Left );

    }

    return bRet;

}

void ScBlockUndo::ShowBlock()

{

    if ( IsPaintLocked() )

        return;

    ScTabViewShell* pViewShell = ScTabViewShell::GetActiveViewShell();

    if (!pViewShell)

        return;

    ShowTable( aBlockRange );       // with multiple sheets in range each of them is good

    pViewShell->MoveCursorAbs( aBlockRange.aStart.Col(), aBlockRange.aStart.Row(),

                               SC_FOLLOW_JUMP, false, false );

    SCTAB nTab = pViewShell->GetViewData().GetTabNumber();

    ScRange aRange = aBlockRange;

    aRange.aStart.SetTab( nTab );

    aRange.aEnd.SetTab( nTab );

    pViewShell->MarkRange( aRange );

    // not through SetMarkArea to MarkData, due to possibly lacking paint

}

ScMultiBlockUndo::ScMultiBlockUndo(

    ScDocShell& rDocSh, ScRangeList aRanges) :

    ScSimpleUndo(rDocSh),

    maBlockRanges(std::move(aRanges))

{

    mpDrawUndo = GetSdrUndoAction( &rDocShell.GetDocument() );

}

ScMultiBlockUndo::~ScMultiBlockUndo()

{

    mpDrawUndo.reset();

}

void ScMultiBlockUndo::BeginUndo()

{

    ScSimpleUndo::BeginUndo();

    EnableDrawAdjust(&rDocShell.GetDocument(), false);

}

void ScMultiBlockUndo::EndUndo()

{

    EnableDrawAdjust(&rDocShell.GetDocument(), true);

    DoSdrUndoAction(mpDrawUndo.get(), &rDocShell.GetDocument());

    ShowBlock();

    ScSimpleUndo::EndUndo();

}

void ScMultiBlockUndo::EndRedo()

{

    ShowBlock();

    ScSimpleUndo::EndRedo();

}

void ScMultiBlockUndo::ShowBlock()

{

    if ( IsPaintLocked() )

        return;

    ScTabViewShell* pViewShell = ScTabViewShell::GetActiveViewShell();

    if (!pViewShell)

        return;

    if (maBlockRanges.empty())

        return;

    // Move to the sheet of the first range.

    ScRange aRange = maBlockRanges.front();

    ShowTable(aRange);

    pViewShell->MoveCursorAbs(

        aRange.aStart.Col(), aRange.aStart.Row(), SC_FOLLOW_JUMP, false, false);

    SCTAB nTab = pViewShell->GetViewData().GetTabNumber();

    aRange.aStart.SetTab(nTab);

    aRange.aEnd.SetTab(nTab);

    pViewShell->MarkRange(aRange, false);

    for (size_t i = 1, n = maBlockRanges.size(); i < n; ++i)

    {

        aRange = maBlockRanges[i];

        aRange.aStart.SetTab(nTab);

        aRange.aEnd.SetTab(nTab);

        pViewShell->MarkRange(aRange, false, true);

    }

}

ScMoveUndo::ScMoveUndo( ScDocShell& rDocSh, ScDocumentUniquePtr pRefDoc, std::unique_ptr<ScRefUndoData> pRefData ) :

    ScSimpleUndo( rDocSh ),

    pRefUndoDoc( std::move(pRefDoc) ),

    pRefUndoData( std::move(pRefData) )

{

    ScDocument& rDoc = rDocShell.GetDocument();

    if (pRefUndoData)

        pRefUndoData->DeleteUnchanged(rDoc);

    pDrawUndo = GetSdrUndoAction( &rDoc );

}

ScMoveUndo::~ScMoveUndo()

{

    pRefUndoData.reset();

    pRefUndoDoc.reset();

    pDrawUndo.reset();

}

void ScMoveUndo::UndoRef()

{

    ScDocument& rDoc = rDocShell.GetDocument();

    ScRange aRange(0,0,0, rDoc.MaxCol(),rDoc.MaxRow(),pRefUndoDoc->GetTableCount()-1);

    pRefUndoDoc->CopyToDocument(aRange, InsertDeleteFlags::FORMULA, false, rDoc, nullptr, false);

    if (pRefUndoData)

        pRefUndoData->DoUndo( rDoc, false );

}

void ScMoveUndo::BeginUndo()

{

    ScSimpleUndo::BeginUndo();

    EnableDrawAdjust( &rDocShell.GetDocument(), false );

}

void ScMoveUndo::EndUndo()

{

    DoSdrUndoAction( pDrawUndo.get(), &rDocShell.GetDocument() );     // must also be called when pointer is null

    if (pRefUndoDoc)

        UndoRef();

    EnableDrawAdjust( &rDocShell.GetDocument(), true );

    ScSimpleUndo::EndUndo();

}

ScDBFuncUndo::ScDBFuncUndo( ScDocShell& rDocSh, const ScRange& rOriginal ) :

    ScSimpleUndo( rDocSh ),

    aOriginalRange( rOriginal )

{

    pAutoDBRange = rDocSh.GetOldAutoDBRange();

}

ScDBFuncUndo::~ScDBFuncUndo()

{

    pAutoDBRange.reset();

}

void ScDBFuncUndo::BeginUndo()

{

    ScSimpleUndo::BeginUndo();

    DoSdrUndoAction( nullptr, &rDocShell.GetDocument() );

}

void ScDBFuncUndo::EndUndo()

{

    ScSimpleUndo::EndUndo();

    if ( !pAutoDBRange )

        return;

    ScDocument& rDoc = rDocShell.GetDocument();

    SCTAB nTab = rDoc.GetVisibleTab();

    ScDBData* pNoNameData = rDoc.GetAnonymousDBData(nTab);

    if (!pNoNameData )

        return;

    SCCOL nRangeX1;

    SCROW nRangeY1;

    SCCOL nRangeX2;

    SCROW nRangeY2;

    SCTAB nRangeTab;

    pNoNameData->GetArea( nRangeTab, nRangeX1, nRangeY1, nRangeX2, nRangeY2 );

    rDocShell.DBAreaDeleted( nRangeTab, nRangeX1, nRangeY1, nRangeX2 );

    *pNoNameData = *pAutoDBRange;

    if ( pAutoDBRange->HasAutoFilter() )

    {

        // restore AutoFilter buttons

        pAutoDBRange->GetArea( nRangeTab, nRangeX1, nRangeY1, nRangeX2, nRangeY2 );

        rDoc.ApplyFlagsTab( nRangeX1, nRangeY1, nRangeX2, nRangeY1, nRangeTab, ScMF::Auto );

        rDocShell.PostPaint( nRangeX1, nRangeY1, nRangeTab, nRangeX2, nRangeY1, nRangeTab, PaintPartFlags::Grid );

    }

}

void ScDBFuncUndo::BeginRedo()

{

    RedoSdrUndoAction( nullptr );

    if ( pAutoDBRange )

    {

        // move the database range to this function's position again (see ScDocShell::GetDBData)

        ScDocument& rDoc = rDocShell.GetDocument();

        ScDBData* pNoNameData = rDoc.GetAnonymousDBData(aOriginalRange.aStart.Tab());

        if ( pNoNameData )

        {

            SCCOL nRangeX1;

            SCROW nRangeY1;

            SCCOL nRangeX2;

            SCROW nRangeY2;

            SCTAB nRangeTab;

            pNoNameData->GetArea( nRangeTab, nRangeX1, nRangeY1, nRangeX2, nRangeY2 );

            rDocShell.DBAreaDeleted( nRangeTab, nRangeX1, nRangeY1, nRangeX2 );

            pNoNameData->SetSortParam( ScSortParam() );

            pNoNameData->SetQueryParam( ScQueryParam() );

            pNoNameData->SetSubTotalParam( ScSubTotalParam() );

            pNoNameData->SetArea( aOriginalRange.aStart.Tab(),

                                  aOriginalRange.aStart.Col(), aOriginalRange.aStart.Row(),

                                  aOriginalRange.aEnd.Col(), aOriginalRange.aEnd.Row() );

            pNoNameData->SetByRow( true );

            pNoNameData->SetAutoFilter( false );

            // header is always set with the operation in redo

        }

    }

    ScSimpleUndo::BeginRedo();

}

void ScDBFuncUndo::EndRedo()

{

    ScSimpleUndo::EndRedo();

}

ScUndoWrapper::ScUndoWrapper( std::unique_ptr<SfxUndoAction> pUndo ) :

    pWrappedUndo( std::move(pUndo) ),

    mnViewShellId( -1 )

{

    if (pWrappedUndo)

        mnViewShellId = pWrappedUndo->GetViewShellId();

}

ScUndoWrapper::~ScUndoWrapper()

{

}

OUString ScUndoWrapper::GetComment() const

{

    if (pWrappedUndo)

        return pWrappedUndo->GetComment();

    return OUString();

}

ViewShellId ScUndoWrapper::GetViewShellId() const

{

    return mnViewShellId;

}

OUString ScUndoWrapper::GetRepeatComment(SfxRepeatTarget& rTarget) const

{

    if (pWrappedUndo)

        return pWrappedUndo->GetRepeatComment(rTarget);

    return OUString();

}

bool ScUndoWrapper::Merge( SfxUndoAction* pNextAction )

{

    if (pWrappedUndo)

        return pWrappedUndo->Merge(pNextAction);

    else

        return false;

}

void ScUndoWrapper::Undo()

{

    if (pWrappedUndo)

        pWrappedUndo->Undo();

}

void ScUndoWrapper::Redo()

{

    if (pWrappedUndo)

        pWrappedUndo->Redo();

}

void ScUndoWrapper::Repeat(SfxRepeatTarget& rTarget)

{

    if (pWrappedUndo)

        pWrappedUndo->Repeat(rTarget);

}

bool ScUndoWrapper::CanRepeat(SfxRepeatTarget& rTarget) const

{

    if (pWrappedUndo)

        return pWrappedUndo->CanRepeat(rTarget);

    else

        return false;

}

ScUndoManager::~ScUndoManager() {}

/**

 * Checks if the topmost undo action owned by pView is independent from the topmost action undo

 * action.

 */

bool ScUndoManager::IsViewUndoActionIndependent(const SfxViewShell* pView, sal_uInt16& rOffset) const

{

    if (GetUndoActionCount() <= 1)

    {

        // Single or less undo, owned by another view.

        return false;

    }

    if (!pView)

    {

        return false;

    }

    // Last undo action that doesn't belong to the view.

    const SfxUndoAction* pTopAction = GetUndoAction();

    ViewShellId nViewId = pView->GetViewShellId();

    // Earlier undo action that belongs to the view, but is not the top one.

    const SfxUndoAction* pViewAction = nullptr;

    size_t nOffset = 0;

    for (size_t i = 0; i < GetUndoActionCount(); ++i)

    {

        const SfxUndoAction* pAction = GetUndoAction(i);

        if (pAction->GetViewShellId() == nViewId)

        {

            pViewAction = pAction;

            nOffset = i;

            break;

        }

    }

    if (!pViewAction)

    {

        // Found no earlier undo action that belongs to the view.

        return false;

    }

    std::optional<ScRange> topRange = getAffectedRangeFromUndo(pTopAction);

    if (!topRange)

        return false;

    std::optional<ScRange> viewRange = getAffectedRangeFromUndo(pViewAction);

    if (!viewRange)

        return false;

    if (topRange->Intersects(*viewRange))

        return false;

    for (size_t i = 0; i < GetRedoActionCount(); ++i)

    {

        auto pRedoAction = getScSimpleUndo(GetRedoAction(i));

        if (!pRedoAction)

        {

            return false;

        }

        std::optional<ScRange> redoRange = getAffectedRangeFromUndo(pRedoAction);

        if (!redoRange || (redoRange->Intersects(*viewRange) && pRedoAction->GetViewShellId() != nViewId))

        {

            // Dependent redo action and owned by another view.

            return false;

        }

    }

    rOffset = nOffset;

    return true;

}

std::optional<ScRange> ScUndoManager::getAffectedRangeFromUndo(const SfxUndoAction* pAction)

{

    auto pSimpleUndo = getScSimpleUndo(pAction);

    if (!pSimpleUndo)

        return std::nullopt;

    return pSimpleUndo->getAffectedRange();

}

const ScSimpleUndo* ScUndoManager::getScSimpleUndo(const SfxUndoAction* pAction)

{

    const ScSimpleUndo* pSimpleUndo = dynamic_cast<const ScSimpleUndo*>(pAction);

    if (pSimpleUndo)

        return pSimpleUndo;

    auto pListAction = dynamic_cast<const SfxListUndoAction*>(pAction);

    if (!pListAction)

        return nullptr;

    if (pListAction->maUndoActions.size() > 1)

        return nullptr;

    return dynamic_cast<ScSimpleUndo*>(pListAction->maUndoActions[0].pAction.get());

}

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