sharedformula.hxx

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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/.
 */

#pragma once

#include "formulacell.hxx"
#include "mtvelements.hxx"

#include <vector>

#define USE_FORMULA_GROUP_LISTENER 1

namespace sc {

class StartListeningContext;

class SharedFormulaUtil
{
public:

    template<typename Iter>
    static void groupFormulaCells(const Iter& itBeg, const Iter& itEnd)
    {
        Iter it = itBeg;
        ScFormulaCell* pPrev = *it;
        ScFormulaCell* pCur = nullptr;
        for (++it; it != itEnd; ++it, pPrev = pCur)
        {
            pCur = *it;
            ScFormulaCell::CompareState eState = pCur->CompareByTokenArray(*pPrev);
            if (eState == ScFormulaCell::NotEqual)
                continue;

            ScFormulaCellGroupRef xGroup = pPrev->GetCellGroup();
            if (xGroup)
            {
                // Extend the group.
                ++xGroup->mnLength;
                pCur->SetCellGroup(xGroup);
                continue;
            }

            // Create a new group.
            xGroup = pPrev->CreateCellGroup(2, eState == ScFormulaCell::EqualInvariant);
            pCur->SetCellGroup(xGroup);
        }
    }

    static const ScFormulaCell* getSharedTopFormulaCell(const CellStoreType::position_type& aPos);

    static bool splitFormulaCellGroup(const CellStoreType::position_type& aPos, sc::EndListeningContext* pCxt);

    static bool splitFormulaCellGroups(const ScDocument& rDoc, CellStoreType& rCells, std::vector<SCROW>& rBounds);

    static bool joinFormulaCells(
        const CellStoreType::position_type& rPos, ScFormulaCell& rCell1, ScFormulaCell& rCell2 );
    static bool joinFormulaCellAbove( const CellStoreType::position_type& aPos );

    static void unshareFormulaCell(const CellStoreType::position_type& aPos, ScFormulaCell& rCell);

    static void unshareFormulaCells(const ScDocument& rDoc, CellStoreType& rCells, std::vector<SCROW>& rRows);

    static void startListeningAsGroup( StartListeningContext& rCxt, ScFormulaCell** ppSharedTop );
};

}

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