LCOV - code coverage report
Current view: top level - libreoffice/sc/source/core/data - bcaslot.cxx (source / functions) Hit Total Coverage
Test: libreoffice_filtered.info Lines: 285 458 62.2 %
Date: 2012-12-27 Functions: 37 48 77.1 %
Legend: Lines: hit not hit

          Line data    Source code
       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             :  * This file incorporates work covered by the following license notice:
      10             :  *
      11             :  *   Licensed to the Apache Software Foundation (ASF) under one or more
      12             :  *   contributor license agreements. See the NOTICE file distributed
      13             :  *   with this work for additional information regarding copyright
      14             :  *   ownership. The ASF licenses this file to you under the Apache
      15             :  *   License, Version 2.0 (the "License"); you may not use this file
      16             :  *   except in compliance with the License. You may obtain a copy of
      17             :  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
      18             :  */
      19             : 
      20             : #include <sfx2/objsh.hxx>
      21             : #include <svl/listener.hxx>
      22             : #include <svl/listeneriter.hxx>
      23             : 
      24             : #include "document.hxx"
      25             : #include "brdcst.hxx"
      26             : #include "bcaslot.hxx"
      27             : #include "scerrors.hxx"
      28             : #include "docoptio.hxx"
      29             : #include "refupdat.hxx"
      30             : #include "table.hxx"
      31             : 
      32             : // Number of slots per dimension
      33             : // must be integer divisors of MAXCOLCOUNT respectively MAXROWCOUNT
      34             : #define BCA_SLOTS_COL ((MAXCOLCOUNT_DEFINE) / 16)
      35             : #if MAXROWCOUNT_DEFINE == 32000
      36             : #define BCA_SLOTS_ROW 256
      37             : #define BCA_SLICE 125
      38             : #else
      39             : #define BCA_SLICE 128
      40             : #define BCA_SLOTS_ROW ((MAXROWCOUNT_DEFINE) / BCA_SLICE)
      41             : #endif
      42             : #define BCA_SLOT_COLS ((MAXCOLCOUNT_DEFINE) / BCA_SLOTS_COL)
      43             : #define BCA_SLOT_ROWS ((MAXROWCOUNT_DEFINE) / BCA_SLOTS_ROW)
      44             : // multiple?
      45             : #if (BCA_SLOT_COLS * BCA_SLOTS_COL) != (MAXCOLCOUNT_DEFINE)
      46             : #error bad BCA_SLOTS_COL value!
      47             : #endif
      48             : #if (BCA_SLOT_ROWS * BCA_SLOTS_ROW) != (MAXROWCOUNT_DEFINE)
      49             : #error bad BCA_SLOTS_ROW value!
      50             : #endif
      51             : // size of slot array if linear
      52             : #define BCA_SLOTS_DEFINE (BCA_SLOTS_COL * BCA_SLOTS_ROW)
      53             : // Arbitrary 2**31/8, assuming size_t can hold at least 2^31 values and
      54             : // sizeof_ptr is at most 8 bytes. You'd probably doom your machine's memory
      55             : // anyway, once you reached these values..
      56             : #if BCA_SLOTS_DEFINE > 268435456
      57             : #error BCA_SLOTS_DEFINE DOOMed!
      58             : #endif
      59             : 
      60             : // STATIC DATA -----------------------------------------------------------
      61             : 
      62        1713 : TYPEINIT1( ScHint, SfxSimpleHint );
      63           0 : TYPEINIT1( ScAreaChangedHint, SfxHint );
      64             : 
      65             : struct ScSlotData
      66             : {
      67             :     SCROW  nStartRow;   // first row of this segment
      68             :     SCROW  nStopRow;    // first row of next segment
      69             :     SCSIZE nSlice;      // slice size in this segment
      70             :     SCSIZE nCumulated;  // cumulated slots of previous segments
      71             : 
      72          30 :     ScSlotData( SCROW r1, SCROW r2, SCSIZE s, SCSIZE c ) : nStartRow(r1), nStopRow(r2), nSlice(s), nCumulated(c) {}
      73             : };
      74             : typedef ::std::vector< ScSlotData > ScSlotDistribution;
      75             : #if MAXROWCOUNT_DEFINE <= 65536
      76             : // Linear distribution.
      77             : static ScSlotDistribution aSlotDistribution( ScSlotData( 0, MAXROWCOUNT, BCA_SLOT_ROWS, 0));
      78             : static SCSIZE nBcaSlotsRow = BCA_SLOTS_ROW;
      79             : static SCSIZE nBcaSlots = BCA_SLOTS_DEFINE;
      80             : #else
      81             : // Logarithmic or any other distribution.
      82             : // Upper sheet part usually is more populated and referenced and gets fine
      83             : // grained resolution, larger data in larger hunks.
      84             : // Could be further enhanced by also applying a different distribution of
      85             : // column slots.
      86           5 : static SCSIZE initSlotDistribution( ScSlotDistribution & rSD, SCSIZE & rBSR )
      87             : {
      88           5 :     SCSIZE nSlots = 0;
      89           5 :     SCROW nRow1 = 0;
      90           5 :     SCROW nRow2 = 32*1024;
      91           5 :     SCSIZE nSlice = 128;
      92             :     // Must be sorted by row1,row2!
      93          40 :     while (nRow2 <= MAXROWCOUNT)
      94             :     {
      95          30 :         rSD.push_back( ScSlotData( nRow1, nRow2, nSlice, nSlots));
      96          30 :         nSlots += (nRow2 - nRow1) / nSlice;
      97          30 :         nRow1 = nRow2;
      98          30 :         nRow2 *= 2;
      99          30 :         nSlice *= 2;
     100             :     }
     101           5 :     rBSR = nSlots;
     102           5 :     return nSlots;
     103             : }
     104           5 : static ScSlotDistribution aSlotDistribution;
     105             : static SCSIZE nBcaSlotsRow;
     106           5 : static SCSIZE nBcaSlots = initSlotDistribution( aSlotDistribution, nBcaSlotsRow) * BCA_SLOTS_COL;
     107             : // Ensure that all static variables are initialized with this one call.
     108             : #endif
     109             : 
     110             : 
     111         992 : ScBroadcastAreaSlot::ScBroadcastAreaSlot( ScDocument* pDocument,
     112             :         ScBroadcastAreaSlotMachine* pBASMa ) :
     113             :     aTmpSeekBroadcastArea( ScRange()),
     114             :     pDoc( pDocument ),
     115             :     pBASM( pBASMa ),
     116         992 :     mbInBroadcastIteration( false)
     117             : {
     118         992 : }
     119             : 
     120             : 
     121         182 : ScBroadcastAreaSlot::~ScBroadcastAreaSlot()
     122             : {
     123        3305 :     for ( ScBroadcastAreas::iterator aIter( aBroadcastAreaTbl.begin());
     124        3214 :             aIter != aBroadcastAreaTbl.end(); /* none */)
     125             :     {
     126             :         // Prevent hash from accessing dangling pointer in case area is
     127             :         // deleted.
     128        1516 :         ScBroadcastArea* pArea = (*aIter).mpArea;
     129             :         // Erase all so no hash will be accessed upon destruction of the
     130             :         // boost::unordered_map.
     131        1516 :         aBroadcastAreaTbl.erase( aIter++);
     132        1516 :         if (!pArea->DecRef())
     133        1503 :             delete pArea;
     134             :     }
     135          91 : }
     136             : 
     137             : 
     138        3238 : bool ScBroadcastAreaSlot::CheckHardRecalcStateCondition() const
     139             : {
     140        3238 :     if ( pDoc->GetHardRecalcState() )
     141           0 :         return true;
     142        3238 :     if (aBroadcastAreaTbl.size() >= aBroadcastAreaTbl.max_size())
     143             :     {   // this is more hypothetical now, check existed for old SV_PTRARR_SORT
     144           0 :         if ( !pDoc->GetHardRecalcState() )
     145             :         {
     146           0 :             SfxObjectShell* pShell = pDoc->GetDocumentShell();
     147             :             OSL_ENSURE( pShell, "Missing DocShell :-/" );
     148             : 
     149           0 :             if ( pShell )
     150           0 :                 pShell->SetError( SCWARN_CORE_HARD_RECALC, ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM( OSL_LOG_PREFIX ) ) );
     151             : 
     152           0 :             pDoc->SetAutoCalc( false );
     153           0 :             pDoc->SetHardRecalcState( true );
     154             :         }
     155           0 :         return true;
     156             :     }
     157        3238 :     return false;
     158             : }
     159             : 
     160             : 
     161        2330 : bool ScBroadcastAreaSlot::StartListeningArea( const ScRange& rRange,
     162             :         SvtListener* pListener, ScBroadcastArea*& rpArea )
     163             : {
     164        2330 :     bool bNewArea = false;
     165             :     OSL_ENSURE(pListener, "StartListeningArea: pListener Null");
     166        2330 :     if (CheckHardRecalcStateCondition())
     167           0 :         return false;
     168        2330 :     if ( !rpArea )
     169             :     {
     170             :         // Even if most times the area doesn't exist yet and immediately trying
     171             :         // to new and insert it would save an attempt to find it, on mass
     172             :         // operations like identical large [HV]LOOKUP() areas the new/delete
     173             :         // would add quite some penalty for all but the first formula cell.
     174        2330 :         ScBroadcastAreas::const_iterator aIter( FindBroadcastArea( rRange));
     175        2330 :         if (aIter != aBroadcastAreaTbl.end())
     176         768 :             rpArea = (*aIter).mpArea;
     177             :         else
     178             :         {
     179        1562 :             rpArea = new ScBroadcastArea( rRange);
     180        1562 :             if (aBroadcastAreaTbl.insert( rpArea).second)
     181             :             {
     182        1562 :                 rpArea->IncRef();
     183        1562 :                 bNewArea = true;
     184             :             }
     185             :             else
     186             :             {
     187             :                 OSL_FAIL("StartListeningArea: area not found and not inserted in slot?!?");
     188           0 :                 delete rpArea;
     189           0 :                 rpArea = 0;
     190             :             }
     191             :         }
     192        2330 :         if (rpArea)
     193        2330 :             pListener->StartListening( rpArea->GetBroadcaster());
     194             :     }
     195             :     else
     196             :     {
     197           0 :         if (aBroadcastAreaTbl.insert( rpArea).second)
     198           0 :             rpArea->IncRef();
     199             :     }
     200        2330 :     return bNewArea;
     201             : }
     202             : 
     203             : 
     204         908 : void ScBroadcastAreaSlot::InsertListeningArea( ScBroadcastArea* pArea )
     205             : {
     206             :     OSL_ENSURE( pArea, "InsertListeningArea: pArea NULL");
     207         908 :     if (CheckHardRecalcStateCondition())
     208         908 :         return;
     209         908 :     if (aBroadcastAreaTbl.insert( pArea).second)
     210         908 :         pArea->IncRef();
     211             : }
     212             : 
     213             : 
     214             : // If rpArea != NULL then no listeners are stopped, only the area is removed
     215             : // and the reference count decremented.
     216         119 : void ScBroadcastAreaSlot::EndListeningArea( const ScRange& rRange,
     217             :         SvtListener* pListener, ScBroadcastArea*& rpArea )
     218             : {
     219             :     OSL_ENSURE(pListener, "EndListeningArea: pListener Null");
     220         119 :     if ( !rpArea )
     221             :     {
     222         119 :         ScBroadcastAreas::iterator aIter( FindBroadcastArea( rRange));
     223         119 :         if (aIter == aBroadcastAreaTbl.end() || isMarkedErased( aIter))
     224             :             return;
     225         118 :         rpArea = (*aIter).mpArea;
     226         118 :         pListener->EndListening( rpArea->GetBroadcaster() );
     227         118 :         if ( !rpArea->GetBroadcaster().HasListeners() )
     228             :         {   // if nobody is listening we can dispose it
     229          53 :             if (rpArea->GetRef() == 1)
     230          53 :                 rpArea = NULL;      // will be deleted by erase
     231          53 :             EraseArea( aIter);
     232             :         }
     233             :     }
     234             :     else
     235             :     {
     236           0 :         if ( !rpArea->GetBroadcaster().HasListeners() )
     237             :         {
     238           0 :             ScBroadcastAreas::iterator aIter( FindBroadcastArea( rRange));
     239           0 :             if (aIter == aBroadcastAreaTbl.end() || isMarkedErased( aIter))
     240             :                 return;
     241             :             OSL_ENSURE( (*aIter).mpArea == rpArea, "EndListeningArea: area pointer mismatch");
     242           0 :             if (rpArea->GetRef() == 1)
     243           0 :                 rpArea = NULL;      // will be deleted by erase
     244           0 :             EraseArea( aIter);
     245             :         }
     246             :     }
     247             : }
     248             : 
     249             : 
     250        2449 : ScBroadcastAreas::iterator ScBroadcastAreaSlot::FindBroadcastArea(
     251             :         const ScRange& rRange ) const
     252             : {
     253        2449 :     aTmpSeekBroadcastArea.UpdateRange( rRange);
     254        2449 :     return aBroadcastAreaTbl.find( &aTmpSeekBroadcastArea);
     255             : }
     256             : 
     257             : 
     258         702 : sal_Bool ScBroadcastAreaSlot::AreaBroadcast( const ScHint& rHint)
     259             : {
     260         702 :     if (aBroadcastAreaTbl.empty())
     261         274 :         return false;
     262         428 :     bool bInBroadcast = mbInBroadcastIteration;
     263         428 :     mbInBroadcastIteration = true;
     264         428 :     sal_Bool bIsBroadcasted = false;
     265         428 :     const ScAddress& rAddress = rHint.GetAddress();
     266        1348 :     for (ScBroadcastAreas::const_iterator aIter( aBroadcastAreaTbl.begin()),
     267         428 :             aIterEnd( aBroadcastAreaTbl.end()); aIter != aIterEnd; ++aIter )
     268             :     {
     269         492 :         if (isMarkedErased( aIter))
     270           0 :             continue;
     271         492 :         ScBroadcastArea* pArea = (*aIter).mpArea;
     272         492 :         const ScRange& rAreaRange = pArea->GetRange();
     273         492 :         if (rAreaRange.In( rAddress))
     274             :         {
     275         109 :             if (!pBASM->IsInBulkBroadcast() || pBASM->InsertBulkArea( pArea))
     276             :             {
     277          44 :                 pArea->GetBroadcaster().Broadcast( rHint);
     278          44 :                 bIsBroadcasted = sal_True;
     279             :             }
     280             :         }
     281             :     }
     282         428 :     mbInBroadcastIteration = bInBroadcast;
     283             :     // A Notify() during broadcast may call EndListeningArea() and thus dispose
     284             :     // an area if it was the last listener, which would invalidate an iterator
     285             :     // pointing to it, hence the real erase is done afterwards.
     286         428 :     FinallyEraseAreas();
     287         428 :     return bIsBroadcasted;
     288             : }
     289             : 
     290             : 
     291           0 : sal_Bool ScBroadcastAreaSlot::AreaBroadcastInRange( const ScRange& rRange,
     292             :         const ScHint& rHint)
     293             : {
     294           0 :     if (aBroadcastAreaTbl.empty())
     295           0 :         return false;
     296           0 :     bool bInBroadcast = mbInBroadcastIteration;
     297           0 :     mbInBroadcastIteration = true;
     298           0 :     sal_Bool bIsBroadcasted = false;
     299           0 :     for (ScBroadcastAreas::const_iterator aIter( aBroadcastAreaTbl.begin()),
     300           0 :             aIterEnd( aBroadcastAreaTbl.end()); aIter != aIterEnd; ++aIter )
     301             :     {
     302           0 :         if (isMarkedErased( aIter))
     303           0 :             continue;
     304           0 :         ScBroadcastArea* pArea = (*aIter).mpArea;
     305           0 :         const ScRange& rAreaRange = pArea->GetRange();
     306           0 :         if (rAreaRange.Intersects( rRange ))
     307             :         {
     308           0 :             if (!pBASM->IsInBulkBroadcast() || pBASM->InsertBulkArea( pArea))
     309             :             {
     310           0 :                 pArea->GetBroadcaster().Broadcast( rHint);
     311           0 :                 bIsBroadcasted = sal_True;
     312             :             }
     313             :         }
     314             :     }
     315           0 :     mbInBroadcastIteration = bInBroadcast;
     316             :     // A Notify() during broadcast may call EndListeningArea() and thus dispose
     317             :     // an area if it was the last listener, which would invalidate an iterator
     318             :     // pointing to it, hence the real erase is done afterwards.
     319           0 :     FinallyEraseAreas();
     320           0 :     return bIsBroadcasted;
     321             : }
     322             : 
     323             : 
     324           1 : void ScBroadcastAreaSlot::DelBroadcastAreasInRange( const ScRange& rRange )
     325             : {
     326           1 :     if (aBroadcastAreaTbl.empty())
     327           1 :         return;
     328           5 :     for (ScBroadcastAreas::iterator aIter( aBroadcastAreaTbl.begin());
     329           4 :             aIter != aBroadcastAreaTbl.end(); /* increment in body */ )
     330             :     {
     331           1 :         const ScRange& rAreaRange = (*aIter).mpArea->GetRange();
     332           1 :         if (rRange.In( rAreaRange))
     333             :         {
     334           1 :             ScBroadcastArea* pArea = (*aIter).mpArea;
     335           1 :             aBroadcastAreaTbl.erase( aIter++);  // erase before modifying
     336           1 :             if (!pArea->DecRef())
     337             :             {
     338           1 :                 if (pBASM->IsInBulkBroadcast())
     339           0 :                     pBASM->RemoveBulkArea( pArea);
     340           1 :                 delete pArea;
     341             :             }
     342             :         }
     343             :         else
     344           0 :             ++aIter;
     345             :     }
     346             : }
     347             : 
     348             : 
     349           1 : void ScBroadcastAreaSlot::UpdateRemove( UpdateRefMode eUpdateRefMode,
     350             :         const ScRange& rRange, SCsCOL nDx, SCsROW nDy, SCsTAB nDz )
     351             : {
     352           1 :     if (aBroadcastAreaTbl.empty())
     353           1 :         return;
     354             : 
     355             :     SCCOL nCol1, nCol2, theCol1, theCol2;
     356             :     SCROW nRow1, nRow2, theRow1, theRow2;
     357             :     SCTAB nTab1, nTab2, theTab1, theTab2;
     358           0 :     rRange.GetVars( nCol1, nRow1, nTab1, nCol2, nRow2, nTab2);
     359           0 :     for ( ScBroadcastAreas::iterator aIter( aBroadcastAreaTbl.begin());
     360           0 :             aIter != aBroadcastAreaTbl.end(); /* increment in body */ )
     361             :     {
     362           0 :         ScBroadcastArea* pArea = (*aIter).mpArea;
     363           0 :         if ( pArea->IsInUpdateChain() )
     364             :         {
     365           0 :             aBroadcastAreaTbl.erase( aIter++);
     366           0 :             pArea->DecRef();
     367             :         }
     368             :         else
     369             :         {
     370           0 :             pArea->GetRange().GetVars( theCol1, theRow1, theTab1, theCol2, theRow2, theTab2);
     371           0 :             if ( ScRefUpdate::Update( pDoc, eUpdateRefMode,
     372             :                     nCol1,nRow1,nTab1, nCol2,nRow2,nTab2, nDx,nDy,nDz,
     373           0 :                     theCol1,theRow1,theTab1, theCol2,theRow2,theTab2 ))
     374             :             {
     375           0 :                 aBroadcastAreaTbl.erase( aIter++);
     376           0 :                 pArea->DecRef();
     377           0 :                 if (pBASM->IsInBulkBroadcast())
     378           0 :                     pBASM->RemoveBulkArea( pArea);
     379           0 :                 pArea->SetInUpdateChain( sal_True );
     380           0 :                 ScBroadcastArea* pUC = pBASM->GetEOUpdateChain();
     381           0 :                 if ( pUC )
     382           0 :                     pUC->SetUpdateChainNext( pArea );
     383             :                 else    // no tail => no head
     384           0 :                     pBASM->SetUpdateChain( pArea );
     385           0 :                 pBASM->SetEOUpdateChain( pArea );
     386             :             }
     387             :             else
     388           0 :                 ++aIter;
     389             :         }
     390             :     }
     391             : }
     392             : 
     393             : 
     394           0 : void ScBroadcastAreaSlot::UpdateRemoveArea( ScBroadcastArea* pArea )
     395             : {
     396           0 :     ScBroadcastAreas::iterator aIter( aBroadcastAreaTbl.find( pArea));
     397           0 :     if (aIter == aBroadcastAreaTbl.end())
     398           0 :         return;
     399           0 :     if ((*aIter).mpArea != pArea)
     400             :         OSL_FAIL( "UpdateRemoveArea: area pointer mismatch");
     401             :     else
     402             :     {
     403           0 :         aBroadcastAreaTbl.erase( aIter);
     404           0 :         pArea->DecRef();
     405             :     }
     406             : }
     407             : 
     408             : 
     409           0 : void ScBroadcastAreaSlot::UpdateInsert( ScBroadcastArea* pArea )
     410             : {
     411             :     ::std::pair< ScBroadcastAreas::iterator, bool > aPair =
     412           0 :         aBroadcastAreaTbl.insert( pArea);
     413           0 :     if (aPair.second)
     414           0 :         pArea->IncRef();
     415             :     else
     416             :     {
     417             :         // Identical area already exists, add listeners.
     418           0 :         ScBroadcastArea* pTarget = (*(aPair.first)).mpArea;
     419           0 :         if (pArea != pTarget)
     420             :         {
     421           0 :             SvtBroadcaster& rTarget = pTarget->GetBroadcaster();
     422           0 :             SvtListenerIter it( pArea->GetBroadcaster());
     423           0 :             for (SvtListener* pListener = it.GetCurr(); pListener;
     424             :                     pListener = it.GoNext())
     425             :             {
     426           0 :                 pListener->StartListening( rTarget);
     427           0 :             }
     428             :         }
     429             :     }
     430           0 : }
     431             : 
     432             : 
     433          54 : void ScBroadcastAreaSlot::EraseArea( ScBroadcastAreas::iterator& rIter )
     434             : {
     435          54 :     if (mbInBroadcastIteration)
     436             :     {
     437           1 :         (*rIter).mbErasure = true;      // mark for erasure
     438           1 :         pBASM->PushAreaToBeErased( this, rIter);
     439             :     }
     440             :     else
     441             :     {
     442          53 :         ScBroadcastArea* pArea = (*rIter).mpArea;
     443          53 :         aBroadcastAreaTbl.erase( rIter);
     444          53 :         if (!pArea->DecRef())
     445          53 :             delete pArea;
     446             :     }
     447          54 : }
     448             : 
     449             : 
     450         428 : void ScBroadcastAreaSlot::FinallyEraseAreas()
     451             : {
     452         428 :     pBASM->FinallyEraseAreas( this);
     453         428 : }
     454             : 
     455             : 
     456             : // --- ScBroadcastAreaSlotMachine -------------------------------------
     457             : 
     458          63 : ScBroadcastAreaSlotMachine::TableSlots::TableSlots()
     459             : {
     460          63 :     ppSlots = new ScBroadcastAreaSlot* [ nBcaSlots ];
     461          63 :     memset( ppSlots, 0 , sizeof( ScBroadcastAreaSlot* ) * nBcaSlots );
     462          63 : }
     463             : 
     464             : 
     465          57 : ScBroadcastAreaSlotMachine::TableSlots::~TableSlots()
     466             : {
     467     3268722 :     for ( ScBroadcastAreaSlot** pp = ppSlots + nBcaSlots; --pp >= ppSlots; /* nothing */ )
     468             :     {
     469     3268608 :         if (*pp)
     470          91 :             delete *pp;
     471             :     }
     472          57 :     delete [] ppSlots;
     473          57 : }
     474             : 
     475             : 
     476         189 : ScBroadcastAreaSlotMachine::ScBroadcastAreaSlotMachine(
     477             :         ScDocument* pDocument ) :
     478             :     pBCAlways( NULL ),
     479             :     pDoc( pDocument ),
     480             :     pUpdateChain( NULL ),
     481             :     pEOUpdateChain( NULL ),
     482         189 :     nInBulkBroadcast( 0 )
     483             : {
     484         189 : }
     485             : 
     486             : 
     487         216 : ScBroadcastAreaSlotMachine::~ScBroadcastAreaSlotMachine()
     488             : {
     489         492 :     for (TableSlotsMap::iterator iTab( aTableSlotsMap.begin());
     490         328 :             iTab != aTableSlotsMap.end(); ++iTab)
     491             :     {
     492          56 :         delete (*iTab).second;
     493             :     }
     494         108 :     delete pBCAlways;
     495             :     // Areas to-be-erased still present is a serious error in handling, but at
     496             :     // this stage there's nothing we can do anymore.
     497             :     SAL_WARN_IF( !maAreasToBeErased.empty(), "sc", "ScBroadcastAreaSlotMachine::dtor: maAreasToBeErased not empty");
     498         108 : }
     499             : 
     500             : 
     501        8055 : inline SCSIZE ScBroadcastAreaSlotMachine::ComputeSlotOffset(
     502             :         const ScAddress& rAddress ) const
     503             : {
     504        8055 :     SCROW nRow = rAddress.Row();
     505        8055 :     SCCOL nCol = rAddress.Col();
     506        8055 :     if ( !ValidRow(nRow) || !ValidCol(nCol) )
     507             :     {
     508             :         OSL_FAIL( "Row/Col invalid, using first slot!" );
     509           0 :         return 0;
     510             :     }
     511        8085 :     for (size_t i=0; i < aSlotDistribution.size(); ++i)
     512             :     {
     513        8085 :         if (nRow < aSlotDistribution[i].nStopRow)
     514             :         {
     515        8055 :             const ScSlotData& rSD = aSlotDistribution[i];
     516             :             return rSD.nCumulated +
     517             :                 (static_cast<SCSIZE>(nRow - rSD.nStartRow)) / rSD.nSlice +
     518        8055 :                 static_cast<SCSIZE>(nCol) / BCA_SLOT_COLS * nBcaSlotsRow;
     519             :         }
     520             :     }
     521             :     OSL_FAIL( "No slot found, using last!" );
     522           0 :     return nBcaSlots - 1;
     523             : }
     524             : 
     525             : 
     526        2451 : void ScBroadcastAreaSlotMachine::ComputeAreaPoints( const ScRange& rRange,
     527             :         SCSIZE& rStart, SCSIZE& rEnd, SCSIZE& rRowBreak ) const
     528             : {
     529        2451 :     rStart = ComputeSlotOffset( rRange.aStart );
     530        2451 :     rEnd = ComputeSlotOffset( rRange.aEnd );
     531             :     // count of row slots per column minus one
     532             :     rRowBreak = ComputeSlotOffset(
     533        2451 :         ScAddress( rRange.aStart.Col(), rRange.aEnd.Row(), 0 ) ) - rStart;
     534        2451 : }
     535             : 
     536             : 
     537        3357 : inline void ComputeNextSlot( SCSIZE & nOff, SCSIZE & nBreak, ScBroadcastAreaSlot** & pp,
     538             :         SCSIZE & nStart, ScBroadcastAreaSlot** const & ppSlots, SCSIZE const & nRowBreak )
     539             : {
     540        3357 :     if ( nOff < nBreak )
     541             :     {
     542         908 :         ++nOff;
     543         908 :         ++pp;
     544             :     }
     545             :     else
     546             :     {
     547        2449 :         nStart += nBcaSlotsRow;
     548        2449 :         nOff = nStart;
     549        2449 :         pp = ppSlots + nOff;
     550        2449 :         nBreak = nOff + nRowBreak;
     551             :     }
     552        3357 : }
     553             : 
     554             : 
     555        2352 : void ScBroadcastAreaSlotMachine::StartListeningArea( const ScRange& rRange,
     556             :         SvtListener* pListener )
     557             : {
     558        2352 :     if ( rRange == BCA_LISTEN_ALWAYS  )
     559             :     {
     560          22 :         if ( !pBCAlways )
     561           5 :             pBCAlways = new SvtBroadcaster;
     562          22 :         pListener->StartListening( *pBCAlways );
     563             :     }
     564             :     else
     565             :     {
     566        2330 :         bool bDone = false;
     567       13212 :         for (SCTAB nTab = rRange.aStart.Tab();
     568        8552 :                 !bDone && nTab <= rRange.aEnd.Tab(); ++nTab)
     569             :         {
     570        2330 :             TableSlotsMap::iterator iTab( aTableSlotsMap.find( nTab));
     571        2330 :             if (iTab == aTableSlotsMap.end())
     572             :                 iTab = aTableSlotsMap.insert( TableSlotsMap::value_type(
     573          63 :                             nTab, new TableSlots)).first;
     574        2330 :             ScBroadcastAreaSlot** ppSlots = (*iTab).second->getSlots();
     575             :             SCSIZE nStart, nEnd, nRowBreak;
     576        2330 :             ComputeAreaPoints( rRange, nStart, nEnd, nRowBreak );
     577        2330 :             SCSIZE nOff = nStart;
     578        2330 :             SCSIZE nBreak = nOff + nRowBreak;
     579        2330 :             ScBroadcastAreaSlot** pp = ppSlots + nOff;
     580        2330 :             ScBroadcastArea* pArea = NULL;
     581        7898 :             while ( !bDone && nOff <= nEnd )
     582             :             {
     583        3238 :                 if ( !*pp )
     584         992 :                     *pp = new ScBroadcastAreaSlot( pDoc, this );
     585        3238 :                 if (!pArea)
     586             :                 {
     587             :                     // If the call to StartListeningArea didn't create the
     588             :                     // ScBroadcastArea, listeners were added to an already
     589             :                     // existing identical area that doesn't need to be inserted
     590             :                     // to slots again.
     591        2330 :                     if (!(*pp)->StartListeningArea( rRange, pListener, pArea))
     592         768 :                         bDone = true;
     593             :                 }
     594             :                 else
     595         908 :                     (*pp)->InsertListeningArea( pArea);
     596        3238 :                 ComputeNextSlot( nOff, nBreak, pp, nStart, ppSlots, nRowBreak);
     597             :             }
     598             :         }
     599             :     }
     600        2352 : }
     601             : 
     602             : 
     603        3085 : void ScBroadcastAreaSlotMachine::EndListeningArea( const ScRange& rRange,
     604             :         SvtListener* pListener )
     605             : {
     606        3085 :     if ( rRange == BCA_LISTEN_ALWAYS  )
     607             :     {
     608        2966 :         if ( pBCAlways )
     609             :         {
     610         214 :             pListener->EndListening( *pBCAlways);
     611         214 :             if (!pBCAlways->HasListeners())
     612             :             {
     613           0 :                 delete pBCAlways;
     614           0 :                 pBCAlways = NULL;
     615             :             }
     616             :         }
     617             :     }
     618             :     else
     619             :     {
     620         119 :         SCTAB nEndTab = rRange.aEnd.Tab();
     621        1109 :         for (TableSlotsMap::iterator iTab( aTableSlotsMap.lower_bound( rRange.aStart.Tab()));
     622         871 :                 iTab != aTableSlotsMap.end() && (*iTab).first <= nEndTab; ++iTab)
     623             :         {
     624         119 :             ScBroadcastAreaSlot** ppSlots = (*iTab).second->getSlots();
     625             :             SCSIZE nStart, nEnd, nRowBreak;
     626         119 :             ComputeAreaPoints( rRange, nStart, nEnd, nRowBreak );
     627         119 :             SCSIZE nOff = nStart;
     628         119 :             SCSIZE nBreak = nOff + nRowBreak;
     629         119 :             ScBroadcastAreaSlot** pp = ppSlots + nOff;
     630         119 :             ScBroadcastArea* pArea = NULL;
     631         119 :             if (nOff == 0 && nEnd == nBcaSlots-1)
     632             :             {
     633             :                 // Slightly optimized for 0,0,MAXCOL,MAXROW calls as they
     634             :                 // happen for insertion and deletion of sheets.
     635           0 :                 ScBroadcastAreaSlot** const pStop = ppSlots + nEnd;
     636           0 :                 do
     637             :                 {
     638           0 :                     if ( *pp )
     639           0 :                         (*pp)->EndListeningArea( rRange, pListener, pArea );
     640           0 :                 } while (++pp < pStop);
     641             :             }
     642             :             else
     643             :             {
     644         357 :                 while ( nOff <= nEnd )
     645             :                 {
     646         119 :                     if ( *pp )
     647         119 :                         (*pp)->EndListeningArea( rRange, pListener, pArea );
     648         119 :                     ComputeNextSlot( nOff, nBreak, pp, nStart, ppSlots, nRowBreak);
     649             :                 }
     650             :             }
     651             :         }
     652             :     }
     653        3085 : }
     654             : 
     655             : 
     656        4435 : sal_Bool ScBroadcastAreaSlotMachine::AreaBroadcast( const ScHint& rHint ) const
     657             : {
     658        4435 :     const ScAddress& rAddress = rHint.GetAddress();
     659        4435 :     if ( rAddress == BCA_BRDCST_ALWAYS )
     660             :     {
     661        2453 :         if ( pBCAlways )
     662             :         {
     663           0 :             pBCAlways->Broadcast( rHint );
     664           0 :             return sal_True;
     665             :         }
     666             :         else
     667        2453 :             return false;
     668             :     }
     669             :     else
     670             :     {
     671        1982 :         TableSlotsMap::const_iterator iTab( aTableSlotsMap.find( rAddress.Tab()));
     672        1982 :         if (iTab == aTableSlotsMap.end())
     673        1280 :             return false;
     674         702 :         ScBroadcastAreaSlot* pSlot = (*iTab).second->getAreaSlot(
     675        1404 :                 ComputeSlotOffset( rAddress));
     676         702 :         if ( pSlot )
     677         702 :             return pSlot->AreaBroadcast( rHint );
     678             :         else
     679           0 :             return false;
     680             :     }
     681             : }
     682             : 
     683             : 
     684           1 : sal_Bool ScBroadcastAreaSlotMachine::AreaBroadcastInRange( const ScRange& rRange,
     685             :         const ScHint& rHint ) const
     686             : {
     687           1 :     sal_Bool bBroadcasted = false;
     688           1 :     SCTAB nEndTab = rRange.aEnd.Tab();
     689           4 :     for (TableSlotsMap::const_iterator iTab( aTableSlotsMap.lower_bound( rRange.aStart.Tab()));
     690           3 :             iTab != aTableSlotsMap.end() && (*iTab).first <= nEndTab; ++iTab)
     691             :     {
     692           0 :         ScBroadcastAreaSlot** ppSlots = (*iTab).second->getSlots();
     693             :         SCSIZE nStart, nEnd, nRowBreak;
     694           0 :         ComputeAreaPoints( rRange, nStart, nEnd, nRowBreak );
     695           0 :         SCSIZE nOff = nStart;
     696           0 :         SCSIZE nBreak = nOff + nRowBreak;
     697           0 :         ScBroadcastAreaSlot** pp = ppSlots + nOff;
     698           0 :         while ( nOff <= nEnd )
     699             :         {
     700           0 :             if ( *pp )
     701           0 :                 bBroadcasted |= (*pp)->AreaBroadcastInRange( rRange, rHint );
     702           0 :             ComputeNextSlot( nOff, nBreak, pp, nStart, ppSlots, nRowBreak);
     703             :         }
     704             :     }
     705           1 :     return bBroadcasted;
     706             : }
     707             : 
     708             : 
     709          42 : void ScBroadcastAreaSlotMachine::DelBroadcastAreasInRange(
     710             :         const ScRange& rRange )
     711             : {
     712          42 :     SCTAB nEndTab = rRange.aEnd.Tab();
     713         173 :     for (TableSlotsMap::iterator iTab( aTableSlotsMap.lower_bound( rRange.aStart.Tab()));
     714         130 :             iTab != aTableSlotsMap.end() && (*iTab).first <= nEndTab; ++iTab)
     715             :     {
     716           1 :         ScBroadcastAreaSlot** ppSlots = (*iTab).second->getSlots();
     717             :         SCSIZE nStart, nEnd, nRowBreak;
     718           1 :         ComputeAreaPoints( rRange, nStart, nEnd, nRowBreak );
     719           1 :         SCSIZE nOff = nStart;
     720           1 :         SCSIZE nBreak = nOff + nRowBreak;
     721           1 :         ScBroadcastAreaSlot** pp = ppSlots + nOff;
     722           1 :         if (nOff == 0 && nEnd == nBcaSlots-1)
     723             :         {
     724             :             // Slightly optimized for 0,0,MAXCOL,MAXROW calls as they
     725             :             // happen for insertion and deletion of sheets.
     726           1 :             ScBroadcastAreaSlot** const pStop = ppSlots + nEnd;
     727       57343 :             do
     728             :             {
     729       57343 :                 if ( *pp )
     730           1 :                     (*pp)->DelBroadcastAreasInRange( rRange );
     731           1 :             } while (++pp < pStop);
     732             :         }
     733             :         else
     734             :         {
     735           0 :             while ( nOff <= nEnd )
     736             :             {
     737           0 :                 if ( *pp )
     738           0 :                     (*pp)->DelBroadcastAreasInRange( rRange );
     739           0 :                 ComputeNextSlot( nOff, nBreak, pp, nStart, ppSlots, nRowBreak);
     740             :             }
     741             :         }
     742             :     }
     743          42 : }
     744             : 
     745             : 
     746             : // for all affected: remove, chain, update range, insert, and maybe delete
     747          61 : void ScBroadcastAreaSlotMachine::UpdateBroadcastAreas(
     748             :         UpdateRefMode eUpdateRefMode,
     749             :         const ScRange& rRange, SCsCOL nDx, SCsROW nDy, SCsTAB nDz )
     750             : {
     751             :     // remove affected and put in chain
     752          61 :     SCTAB nEndTab = rRange.aEnd.Tab();
     753         249 :     for (TableSlotsMap::iterator iTab( aTableSlotsMap.lower_bound( rRange.aStart.Tab()));
     754         187 :             iTab != aTableSlotsMap.end() && (*iTab).first <= nEndTab; ++iTab)
     755             :     {
     756           1 :         ScBroadcastAreaSlot** ppSlots = (*iTab).second->getSlots();
     757             :         SCSIZE nStart, nEnd, nRowBreak;
     758           1 :         ComputeAreaPoints( rRange, nStart, nEnd, nRowBreak );
     759           1 :         SCSIZE nOff = nStart;
     760           1 :         SCSIZE nBreak = nOff + nRowBreak;
     761           1 :         ScBroadcastAreaSlot** pp = ppSlots + nOff;
     762           1 :         if (nOff == 0 && nEnd == nBcaSlots-1)
     763             :         {
     764             :             // Slightly optimized for 0,0,MAXCOL,MAXROW calls as they
     765             :             // happen for insertion and deletion of sheets.
     766           1 :             ScBroadcastAreaSlot** const pStop = ppSlots + nEnd;
     767       57343 :             do
     768             :             {
     769       57343 :                 if ( *pp )
     770           1 :                     (*pp)->UpdateRemove( eUpdateRefMode, rRange, nDx, nDy, nDz );
     771           1 :             } while (++pp < pStop);
     772             :         }
     773             :         else
     774             :         {
     775           0 :             while ( nOff <= nEnd )
     776             :             {
     777           0 :                 if ( *pp )
     778           0 :                     (*pp)->UpdateRemove( eUpdateRefMode, rRange, nDx, nDy, nDz );
     779           0 :                 ComputeNextSlot( nOff, nBreak, pp, nStart, ppSlots, nRowBreak);
     780             :             }
     781             :         }
     782             :     }
     783             : 
     784             :     // Updating an area's range will modify the hash key, remove areas from all
     785             :     // affected slots. Will be reinserted later with the updated range.
     786          61 :     ScBroadcastArea* pChain = pUpdateChain;
     787         122 :     while (pChain)
     788             :     {
     789           0 :         ScBroadcastArea* pArea = pChain;
     790           0 :         pChain = pArea->GetUpdateChainNext();
     791           0 :         ScRange aRange( pArea->GetRange());
     792             :         // remove from slots
     793           0 :         for (SCTAB nTab = aRange.aStart.Tab(); nTab <= aRange.aEnd.Tab() && pArea->GetRef(); ++nTab)
     794             :         {
     795           0 :             TableSlotsMap::iterator iTab( aTableSlotsMap.find( nTab));
     796           0 :             if (iTab == aTableSlotsMap.end())
     797             :             {
     798             :                 OSL_FAIL( "UpdateBroadcastAreas: Where's the TableSlot?!?");
     799           0 :                 continue;   // for
     800             :             }
     801           0 :             ScBroadcastAreaSlot** ppSlots = (*iTab).second->getSlots();
     802             :             SCSIZE nStart, nEnd, nRowBreak;
     803           0 :             ComputeAreaPoints( aRange, nStart, nEnd, nRowBreak );
     804           0 :             SCSIZE nOff = nStart;
     805           0 :             SCSIZE nBreak = nOff + nRowBreak;
     806           0 :             ScBroadcastAreaSlot** pp = ppSlots + nOff;
     807           0 :             while ( nOff <= nEnd && pArea->GetRef() )
     808             :             {
     809           0 :                 if (*pp)
     810           0 :                     (*pp)->UpdateRemoveArea( pArea);
     811           0 :                 ComputeNextSlot( nOff, nBreak, pp, nStart, ppSlots, nRowBreak);
     812             :             }
     813             :         }
     814             : 
     815             :     }
     816             : 
     817             :     // shift sheets
     818          61 :     if (nDz)
     819             :     {
     820          45 :         if (nDz < 0)
     821             :         {
     822          33 :             TableSlotsMap::iterator iDel( aTableSlotsMap.lower_bound( rRange.aStart.Tab()));
     823          33 :             TableSlotsMap::iterator iTab( aTableSlotsMap.lower_bound( rRange.aStart.Tab() - nDz));
     824             :             // Remove sheets, if any, iDel or/and iTab may as well point to end().
     825          67 :             while (iDel != iTab)
     826             :             {
     827           1 :                 delete (*iDel).second;
     828           1 :                 aTableSlotsMap.erase( iDel++);
     829             :             }
     830             :             // shift remaining down
     831          66 :             while (iTab != aTableSlotsMap.end())
     832             :             {
     833           0 :                 SCTAB nTab = (*iTab).first + nDz;
     834           0 :                 aTableSlotsMap[nTab] = (*iTab).second;
     835           0 :                 aTableSlotsMap.erase( iTab++);
     836             :             }
     837             :         }
     838             :         else
     839             :         {
     840          12 :             TableSlotsMap::iterator iStop( aTableSlotsMap.lower_bound( rRange.aStart.Tab()));
     841          12 :             if (iStop != aTableSlotsMap.end())
     842             :             {
     843           0 :                 bool bStopIsBegin = (iStop == aTableSlotsMap.begin());
     844           0 :                 if (!bStopIsBegin)
     845           0 :                     --iStop;
     846           0 :                 TableSlotsMap::iterator iTab( aTableSlotsMap.end());
     847           0 :                 --iTab;
     848           0 :                 while (iTab != iStop)
     849             :                 {
     850           0 :                     SCTAB nTab = (*iTab).first + nDz;
     851           0 :                     aTableSlotsMap[nTab] = (*iTab).second;
     852           0 :                     aTableSlotsMap.erase( iTab--);
     853             :                 }
     854             :                 // Shift the very first, iTab==iStop in this case.
     855           0 :                 if (bStopIsBegin)
     856             :                 {
     857           0 :                     SCTAB nTab = (*iTab).first + nDz;
     858           0 :                     aTableSlotsMap[nTab] = (*iTab).second;
     859           0 :                     aTableSlotsMap.erase( iStop);
     860             :                 }
     861             :             }
     862             :         }
     863             :     }
     864             : 
     865             :     // work off chain
     866             :     SCCOL nCol1, nCol2, theCol1, theCol2;
     867             :     SCROW nRow1, nRow2, theRow1, theRow2;
     868             :     SCTAB nTab1, nTab2, theTab1, theTab2;
     869          61 :     rRange.GetVars( nCol1, nRow1, nTab1, nCol2, nRow2, nTab2);
     870         122 :     while ( pUpdateChain )
     871             :     {
     872           0 :         ScBroadcastArea* pArea = pUpdateChain;
     873           0 :         ScRange aRange( pArea->GetRange());
     874           0 :         pUpdateChain = pArea->GetUpdateChainNext();
     875             : 
     876             :         // update range
     877           0 :         aRange.GetVars( theCol1, theRow1, theTab1, theCol2, theRow2, theTab2);
     878           0 :         if ( ScRefUpdate::Update( pDoc, eUpdateRefMode,
     879             :                 nCol1,nRow1,nTab1, nCol2,nRow2,nTab2, nDx,nDy,nDz,
     880           0 :                 theCol1,theRow1,theTab1, theCol2,theRow2,theTab2 ))
     881             :         {
     882           0 :             aRange = ScRange( theCol1,theRow1,theTab1, theCol2,theRow2,theTab2 );
     883           0 :             pArea->UpdateRange( aRange );
     884           0 :             pArea->GetBroadcaster().Broadcast( ScAreaChangedHint( aRange ) );   // for DDE
     885             :         }
     886             : 
     887             :         // insert to slots
     888           0 :         for (SCTAB nTab = aRange.aStart.Tab(); nTab <= aRange.aEnd.Tab(); ++nTab)
     889             :         {
     890           0 :             TableSlotsMap::iterator iTab( aTableSlotsMap.find( nTab));
     891           0 :             if (iTab == aTableSlotsMap.end())
     892             :                 iTab = aTableSlotsMap.insert( TableSlotsMap::value_type(
     893           0 :                             nTab, new TableSlots)).first;
     894           0 :             ScBroadcastAreaSlot** ppSlots = (*iTab).second->getSlots();
     895             :             SCSIZE nStart, nEnd, nRowBreak;
     896           0 :             ComputeAreaPoints( aRange, nStart, nEnd, nRowBreak );
     897           0 :             SCSIZE nOff = nStart;
     898           0 :             SCSIZE nBreak = nOff + nRowBreak;
     899           0 :             ScBroadcastAreaSlot** pp = ppSlots + nOff;
     900           0 :             while ( nOff <= nEnd )
     901             :             {
     902           0 :                 if (!*pp)
     903           0 :                     *pp = new ScBroadcastAreaSlot( pDoc, this );
     904           0 :                 (*pp)->UpdateInsert( pArea );
     905           0 :                 ComputeNextSlot( nOff, nBreak, pp, nStart, ppSlots, nRowBreak);
     906             :             }
     907             :         }
     908             : 
     909             :         // unchain
     910           0 :         pArea->SetUpdateChainNext( NULL );
     911           0 :         pArea->SetInUpdateChain( false );
     912             : 
     913             :         // Delete if not inserted to any slot. RemoveBulkArea(pArea) was
     914             :         // already executed in UpdateRemove().
     915           0 :         if (!pArea->GetRef())
     916           0 :             delete pArea;
     917             :     }
     918          61 :     pEOUpdateChain = NULL;
     919          61 : }
     920             : 
     921             : 
     922        4723 : void ScBroadcastAreaSlotMachine::EnterBulkBroadcast()
     923             : {
     924        4723 :     ++nInBulkBroadcast;
     925        4723 : }
     926             : 
     927             : 
     928        4723 : void ScBroadcastAreaSlotMachine::LeaveBulkBroadcast()
     929             : {
     930        4723 :     if (nInBulkBroadcast > 0)
     931             :     {
     932        4723 :         if (--nInBulkBroadcast == 0)
     933        4270 :             ScBroadcastAreasBulk().swap( aBulkBroadcastAreas);
     934             :     }
     935        4723 : }
     936             : 
     937             : 
     938         105 : bool ScBroadcastAreaSlotMachine::InsertBulkArea( const ScBroadcastArea* pArea )
     939             : {
     940         105 :     return aBulkBroadcastAreas.insert( pArea ).second;
     941             : }
     942             : 
     943             : 
     944           0 : size_t ScBroadcastAreaSlotMachine::RemoveBulkArea( const ScBroadcastArea* pArea )
     945             : {
     946           0 :     return aBulkBroadcastAreas.erase( pArea );
     947             : }
     948             : 
     949             : 
     950           1 : void ScBroadcastAreaSlotMachine::PushAreaToBeErased( ScBroadcastAreaSlot* pSlot,
     951             :         ScBroadcastAreas::iterator& rIter )
     952             : {
     953           1 :     maAreasToBeErased.push_back( ::std::make_pair( pSlot, rIter));
     954           1 : }
     955             : 
     956             : 
     957         428 : void ScBroadcastAreaSlotMachine::FinallyEraseAreas( ScBroadcastAreaSlot* pSlot )
     958             : {
     959             :     SAL_WARN_IF( pSlot->IsInBroadcastIteration(), "sc",
     960             :             "ScBroadcastAreaSlotMachine::FinallyEraseAreas: during iteration? NO!");
     961         428 :     if (pSlot->IsInBroadcastIteration())
     962         428 :         return;
     963             : 
     964             :     // maAreasToBeErased is a simple vector so erasing an element may
     965             :     // invalidate iterators and would be inefficient anyway. Instead, copy
     966             :     // elements to be preserved (usually none!) to temporary vector and swap.
     967         428 :     AreasToBeErased aCopy;
     968        1287 :     for (AreasToBeErased::iterator aIt( maAreasToBeErased.begin());
     969         858 :             aIt != maAreasToBeErased.end(); ++aIt)
     970             :     {
     971           1 :         if ((*aIt).first == pSlot)
     972           1 :             pSlot->EraseArea( (*aIt).second);
     973             :         else
     974           0 :             aCopy.push_back( *aIt);
     975             :     }
     976         428 :     maAreasToBeErased.swap( aCopy);
     977          15 : }
     978             : 
     979             : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */

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