sc/inc/sharedformula.hxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  */
   9
  10 #ifndef SC_SHAREDFORMULA_HXX
  11 #define SC_SHAREDFORMULA_HXX
  12
  13 #include "formulacell.hxx"
  14 #include "mtvelements.hxx"
  15
  16 #include <vector>
  17
  18 namespace sc {
  19
  20 class SharedFormulaUtil
  21 {
  22 public:
  23
  24     /**
  25      * Group formula cells stored in the passed container. The formula cells
  26      * in the container are assumed to be all <b>non-shared</b>.
  27      */
  28     template<typename _Iter>
  29     static void groupFormulaCells(const _Iter& itBeg, const _Iter& itEnd)
  30     {
  31         _Iter it = itBeg;
  32         ScFormulaCell* pPrev = *it;
  33         ScFormulaCell* pCur = NULL;
  34         for (++it; it != itEnd; ++it, pPrev = pCur)
  35         {
  36             pCur = *it;
  37             ScFormulaCell::CompareState eState = pCur->CompareByTokenArray(*pPrev);
  38             if (eState == ScFormulaCell::NotEqual)
  39                 continue;
  40
  41             ScFormulaCellGroupRef xGroup = pPrev->GetCellGroup();
  42             if (xGroup)
  43             {
  44                 // Extend the group.
  45                 ++xGroup->mnLength;
  46                 pCur->SetCellGroup(xGroup);
  47                 continue;
  48             }
  49
  50             // Create a new group.
  51             xGroup = pPrev->CreateCellGroup(2, eState == ScFormulaCell::EqualInvariant);
  52             pCur->SetCellGroup(xGroup);
  53         }
  54     }
  55
  56     /**
  57      * Split existing shared formula range at specified position. The cell at
  58      * specified position becomes the top cell of the lower shared formula
  59      * range after this call.  This method does nothing if the cell at
  60      * specified position is not a formula cell.
  61      *
  62      * @param aPos position of cell to examine.
  63      */
  64     static void splitFormulaCellGroup(const CellStoreType::position_type& aPos);
  65
  66     /**
  67      * Split existing shared formula ranges at specified row positions.
  68      *
  69      * @param rCells cell storage container
  70      * @param rBounds row positions at which to split existing shared formula
  71      *                ranges. Note that this method will directly modify this
  72      *                parameter to sort and remove duplicates.
  73      */
  74     static void splitFormulaCellGroups(CellStoreType& rCells, std::vector<SCROW>& rBounds);
  75
  76     /**
  77      * See if two specified adjacent formula cells can be merged, and if they
  78      * can, merge them into the same group.
  79      *
  80      * @param rPos position object of the first cell
  81      * @param rCell1 first cell
  82      * @param rCell2 second cell located immediately below the first cell.
  83      */
  84     static void joinFormulaCells(
  85         const CellStoreType::position_type& rPos, ScFormulaCell& rCell1, ScFormulaCell& rCell2);
  86     /**
  87      * Merge with an existing formula group (if any) located immediately above
  88      * if the cell at specified position is a formula cell, and its formula
  89      * tokens are identical to that of the above formula group.
  90      *
  91      * @param aPos position of cell to examine.
  92      */
  93     static void joinFormulaCellAbove(const CellStoreType::position_type& aPos);
  94
  95     /**
  96      * Turn a shared formula cell into a non-shared one, and split it off from
  97      * the adjacent formula cell groups.
  98      *
  99      * @param aPos position of cell to examine
 100      * @param rCell formula cell instance
 101      */
 102     static void unshareFormulaCell(const CellStoreType::position_type& aPos, ScFormulaCell& rCell);
 103 };
 104
 105 }
 106
 107 #endif
 108
 109 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */