itempool.cxx

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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/.
 *
 * 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 <svl/itempool.hxx>
#include <svl/setitem.hxx>
 
#include <string.h>
#include <libxml/xmlwriter.h>
 
#include <osl/diagnose.h>
#include <sal/log.hxx>
#include <svl/SfxBroadcaster.hxx>
#include <svl/hint.hxx>
#include <svl/itemset.hxx>
 
#include <poolio.hxx>
 
#include <cassert>
#include <vector>
 
 
#if OSL_DEBUG_LEVEL > 0
#include <map>
 
static void
lcl_CheckSlots2(std::map<sal_uInt16, sal_uInt16> & rSlotMap,
        SfxItemPool const& rPool, SfxItemInfo const* pInfo)
{
    if (!pInfo)
        return; // may not be initialized yet
    if (rPool.GetName() == "EditEngineItemPool")
        return; // HACK: this one has loads of duplicates already, ignore it :(
    sal_uInt16 const nFirst(rPool.GetFirstWhich());
    sal_uInt16 const nCount(rPool.GetLastWhich() - rPool.GetFirstWhich() + 1);
    for (sal_uInt16 n = 0; n < nCount; ++n)
    {
        sal_uInt16 const nSlotId(pInfo[n]._nSID);
        if (nSlotId != 0
            && nSlotId != 10883  // preexisting duplicate SID_ATTR_GRAF_CROP
            && nSlotId != 10023  // preexisting duplicate SID_ATTR_BORDER_INNER
            && nSlotId != 10024  // preexisting duplicate SID_ATTR_BORDER_OUTER
            && nSlotId != 11013  // preexisting duplicate SID_ATTR_BORDER_DIAG_TLBR
            && nSlotId != 11014) // preexisting duplicate SID_ATTR_BORDER_DIAG_BLTR
        {   // check for duplicate slot-id mapping
            std::map<sal_uInt16, sal_uInt16>::const_iterator const iter(
                rSlotMap.find(nSlotId));
            sal_uInt16 const nWhich(nFirst + n);
            if (iter != rSlotMap.end())
            {
                SAL_WARN("svl", "SfxItemPool: duplicate SlotId " << nSlotId
                        << " mapped to " << iter->second << " and " << nWhich);
                assert(false);
            }
            rSlotMap.insert(std::make_pair(nSlotId, nWhich));
        }
    }
}
 
#define CHECK_SLOTS() \
do { \
    std::map<sal_uInt16, sal_uInt16> slotmap; \
    for (SfxItemPool * p = pImpl->mpMaster; p; p = p->pImpl->mpSecondary.get()) \
    { \
        lcl_CheckSlots2(slotmap, *p, p->pItemInfos); \
    } \
} while (false)
 
#else
#define CHECK_SLOTS() do {} while (false)
#endif
 
void SfxPoolItemArray_Impl::clear()
{
    maPoolItemSet.clear();
    maSortablePoolItems.clear();
}
 
sal_uInt16 SfxItemPool::GetFirstWhich() const
{
    return pImpl->mnStart;
}
 
sal_uInt16 SfxItemPool::GetLastWhich() const
{
    return pImpl->mnEnd;
}
 
bool SfxItemPool::IsInRange( sal_uInt16 nWhich ) const
{
    return nWhich >= pImpl->mnStart && nWhich <= pImpl->mnEnd;
}
 
sal_uInt16 SfxItemPool::GetIndex_Impl(sal_uInt16 nWhich) const
{
    if (nWhich < pImpl->mnStart || nWhich > pImpl->mnEnd)
    {
        assert(false && "missing bounds check before use");
        return 0;
    }
    return nWhich - pImpl->mnStart;
}
 
sal_uInt16 SfxItemPool::GetSize_Impl() const
{
    return pImpl->mnEnd - pImpl->mnStart + 1;
}
 
 
bool SfxItemPool::CheckItemInPool(const SfxPoolItem *pItem) const
{
    DBG_ASSERT( pItem, "no 0-Pointer Surrogate" );
    DBG_ASSERT( !IsInvalidItem(pItem), "no Invalid-Item Surrogate" );
    DBG_ASSERT( !IsPoolDefaultItem(pItem), "no Pool-Default-Item Surrogate" );
 
    if ( !IsInRange(pItem->Which()) )
    {
        if ( pImpl->mpSecondary )
            return pImpl->mpSecondary->CheckItemInPool( pItem );
        SAL_WARN( "svl.items", "unknown Which-Id - don't ask me for surrogates, with ID/pos " << pItem->Which());
    }
 
    // Pointer on static or pool-default attribute?
    if( IsStaticDefaultItem(pItem) || IsPoolDefaultItem(pItem) )
        return true;
 
    SfxPoolItemArray_Impl& rItemArr = pImpl->maPoolItemArrays[GetIndex_Impl(pItem->Which())];
 
    for ( auto p : rItemArr )
    {
        if ( p == pItem )
            return true;
    }
    SAL_WARN( "svl.items", "Item not in the pool, with ID/pos " << pItem->Which());
    return false;
}
 
const SfxPoolItem* SfxItemPool::GetPoolDefaultItem( sal_uInt16 nWhich ) const
{
    const SfxPoolItem* pRet;
    if( IsInRange( nWhich ) )
        pRet = pImpl->maPoolDefaults[GetIndex_Impl(nWhich)];
    else if( pImpl->mpSecondary )
        pRet = pImpl->mpSecondary->GetPoolDefaultItem( nWhich );
    else
    {
        assert(false && "unknown WhichId - cannot get pool default");
        pRet = nullptr;
    }
    return pRet;
}
 
 
bool SfxItemPool::IsItemPoolable_Impl( sal_uInt16 nPos ) const
{
    return pItemInfos[nPos]._bPoolable;
}
 
 
bool SfxItemPool::IsItemPoolable( sal_uInt16 nWhich ) const
{
    for ( const SfxItemPool *pPool = this; pPool; pPool = pPool->pImpl->mpSecondary.get() )
    {
        if ( pPool->IsInRange(nWhich) )
            return pPool->IsItemPoolable_Impl( pPool->GetIndex_Impl(nWhich));
    }
    DBG_ASSERT( !IsWhich(nWhich), "unknown which-id" );
    return false;
}
 
 
SfxBroadcaster& SfxItemPool::BC()
{
    return pImpl->aBC;
}
 
 
SfxItemPool::SfxItemPool
(
    const OUString&     rName,          /* Pool name to identify in the file format */
    sal_uInt16          nStartWhich,    /* First WhichId of the Pool (must be > 0) */
    sal_uInt16          nEndWhich,      /* Last WhichId of the Pool */
    const SfxItemInfo*  pInfo,          /* SID Map and Item flags */
    std::vector<SfxPoolItem*>*
                        pDefaults       /* Pointer to static Defaults;
                                           is directly referenced by the Pool,
                                           but no transfer of ownership */
) :
    pItemInfos(pInfo),
    pImpl( new SfxItemPool_Impl( this, rName, nStartWhich, nEndWhich ) )
{
    pImpl->eDefMetric = MapUnit::MapTwip;
 
    if ( pDefaults )
        SetDefaults(pDefaults);
 
#ifdef DBG_UTIL
    if (pItemInfos)
    {
        auto p = pItemInfos;
        auto nWhich = nStartWhich;
        while (nWhich <= nEndWhich)
        {
            if (p->_nSID == nWhich)
            {
                SAL_WARN("svl.items", "No point mapping a SID to itself, just put a 0 here in the SfxItemInfo array, at index " << (p - pItemInfos));
                assert(false);
            }
            ++p;
            ++nWhich;
        }
    }
#endif
}
 
 
SfxItemPool::SfxItemPool
(
    const SfxItemPool&  rPool,                  //  Copy from this instance
    bool                bCloneStaticDefaults    /*  true
                                                    Copy static Defaults
 
                                                    false
                                                    Take over static Defaults */
) :
    salhelper::SimpleReferenceObject(),
    pItemInfos(rPool.pItemInfos),
    pImpl( new SfxItemPool_Impl( this, rPool.pImpl->aName, rPool.pImpl->mnStart, rPool.pImpl->mnEnd ) )
{
    pImpl->eDefMetric = rPool.pImpl->eDefMetric;
 
    // Take over static Defaults
    if ( bCloneStaticDefaults )
    {
        std::vector<SfxPoolItem *>* ppDefaults = new std::vector<SfxPoolItem*>(pImpl->mnEnd-pImpl->mnStart+1);
        for ( sal_uInt16 n = 0; n <= pImpl->mnEnd - pImpl->mnStart; ++n )
        {
            (*ppDefaults)[n] = (*rPool.pImpl->mpStaticDefaults)[n]->Clone(this);
            (*ppDefaults)[n]->SetKind(SfxItemKind::StaticDefault);
        }
 
        SetDefaults( ppDefaults );
    }
    else
        SetDefaults( rPool.pImpl->mpStaticDefaults );
 
    // Copy Pool Defaults
    for (size_t n = 0; n < pImpl->maPoolDefaults.size(); ++n )
        if (rPool.pImpl->maPoolDefaults[n])
        {
            pImpl->maPoolDefaults[n] = rPool.pImpl->maPoolDefaults[n]->Clone(this); //resets kind
            pImpl->maPoolDefaults[n]->SetKind(SfxItemKind::PoolDefault);
        }
 
    // Repair linkage
    if ( rPool.pImpl->mpSecondary )
        SetSecondaryPool( rPool.pImpl->mpSecondary->Clone().get() );
}
 
void SfxItemPool::SetDefaults( std::vector<SfxPoolItem*>* pDefaults )
{
    DBG_ASSERT( pDefaults, "first we ask for it, and then we don't give back..." );
    DBG_ASSERT( !pImpl->mpStaticDefaults, "already have Defaults" );
 
    pImpl->mpStaticDefaults = pDefaults;
    {
        DBG_ASSERT( (*pImpl->mpStaticDefaults)[0]->GetRefCount() == 0 ||
                    IsDefaultItem( (*pImpl->mpStaticDefaults)[0] ),
                    "these are not static" );
        for ( sal_uInt16 n = 0; n <= pImpl->mnEnd - pImpl->mnStart; ++n )
        {
            assert(  ((*pImpl->mpStaticDefaults)[n]->Which() == n + pImpl->mnStart)
                        && "items ids in pool-ranges and in static-defaults do not match" );
            (*pImpl->mpStaticDefaults)[n]->SetKind(SfxItemKind::StaticDefault);
            DBG_ASSERT( pImpl->maPoolItemArrays[n].empty(), "defaults with setitems with items?!" );
        }
    }
}
 
void SfxItemPool::ClearDefaults()
{
    pImpl->mpStaticDefaults = nullptr;
}
 
void SfxItemPool::ReleaseDefaults
(
    bool    bDelete     /*  true
                            Deletes the array as well as the single static Defaults
 
                            false
                            Neither deletes the array not the single static Defaults */
)
 
 
{
    DBG_ASSERT( pImpl->mpStaticDefaults, "requirements not met" );
    ReleaseDefaults( pImpl->mpStaticDefaults, bDelete );
 
    // mpStaticDefaults points to deleted memory if bDelete == true.
    if ( bDelete )
        pImpl->mpStaticDefaults = nullptr;
}
 
 
void SfxItemPool::ReleaseDefaults
(
    std::vector<SfxPoolItem*>*
                    pDefaults,  /*  Static Defaults that are to be freed */
 
    bool            bDelete     /*  true
                                    Deletes the array as well as the specified
                                    static Defaults
 
                                    false
                                    Neither deletes the array nor the single
                                    static Defaults */
)
{
    DBG_ASSERT( pDefaults, "we first ask for it and the return nothing ..." );
 
    for ( auto & rpItem : *pDefaults )
    {
        assert(IsStaticDefaultItem(rpItem));
        rpItem->SetRefCount(0);
        if ( bDelete )
        {
            delete rpItem;
            rpItem = nullptr;
        }
    }
 
    if ( bDelete )
    {
        delete pDefaults;
        pDefaults = nullptr;
    }
}
 
 
SfxItemPool::~SfxItemPool()
{
    if ( !pImpl->maPoolItemArrays.empty() && !pImpl->maPoolDefaults.empty() )
        Delete();
 
    if (pImpl->mpMaster != nullptr && pImpl->mpMaster != this)
    {
        // This condition indicates an error.
        // A pImpl->mpMaster->SetSecondaryPool(...) call should have been made
        // earlier to prevent this. At this point we can only try to
        // prevent a crash later on.
        DBG_ASSERT( pImpl->mpMaster == this, "destroying active Secondary-Pool" );
        if (pImpl->mpMaster->pImpl->mpSecondary == this)
            pImpl->mpMaster->pImpl->mpSecondary = nullptr;
    }
}
 
void SfxItemPool::SetSecondaryPool( SfxItemPool *pPool )
{
    // Reset Master in attached Pools
    if ( pImpl->mpSecondary )
    {
#ifdef DBG_UTIL
        if (pImpl->mpStaticDefaults != nullptr && !pImpl->maPoolItemArrays.empty()
            && !pImpl->mpSecondary->pImpl->maPoolItemArrays.empty())
            // Delete() did not yet run?
        {
                // Does the Master have SetItems?
            bool bHasSetItems = false;
            for ( sal_uInt16 i = 0; !bHasSetItems && i < pImpl->mnEnd - pImpl->mnStart; ++i )
                bHasSetItems = dynamic_cast<const SfxSetItem *>((*pImpl->mpStaticDefaults)[i]) != nullptr;
 
            // Detached Pools must be empty
            bool bOK = bHasSetItems;
            for (auto const& rSecArray : pImpl->mpSecondary->pImpl->maPoolItemArrays)
            {
                if (!bOK)
                    break;
                if (rSecArray.size()>0)
                {
                    SAL_WARN("svl.items", "old secondary pool: " << pImpl->mpSecondary->pImpl->aName
                                    << " of pool: " << pImpl->aName << " must be empty.");
                    break;
                }
            }
        }
#endif
 
        pImpl->mpSecondary->pImpl->mpMaster = pImpl->mpSecondary.get();
        for ( SfxItemPool *p = pImpl->mpSecondary->pImpl->mpSecondary.get(); p; p = p->pImpl->mpSecondary.get() )
            p->pImpl->mpMaster = pImpl->mpSecondary.get();
    }
 
    // Set Master of new Secondary Pools
    DBG_ASSERT( !pPool || pPool->pImpl->mpMaster == pPool, "Secondary is present in two Pools" );
    SfxItemPool *pNewMaster = GetMasterPool() ? pImpl->mpMaster : this;
    for ( SfxItemPool *p = pPool; p; p = p->pImpl->mpSecondary.get() )
        p->pImpl->mpMaster = pNewMaster;
 
    // Remember new Secondary Pool
    pImpl->mpSecondary = pPool;
 
    CHECK_SLOTS();
}
 
void SfxItemPool::SetItemInfos(SfxItemInfo const*const pInfo)
{
    pItemInfos = pInfo;
    CHECK_SLOTS();
}
 
 
MapUnit SfxItemPool::GetMetric( sal_uInt16 ) const
{
    return pImpl->eDefMetric;
}
 
 
void SfxItemPool::SetDefaultMetric( MapUnit eNewMetric )
{
//    assert((pImpl->eDefMetric == eNewMetric || !pImpl->mpPoolRanges) && "pool already frozen, cannot change metric");
    pImpl->eDefMetric = eNewMetric;
}
 
MapUnit SfxItemPool::GetDefaultMetric() const
{
    return pImpl->eDefMetric;
}
 
const OUString& SfxItemPool::GetName() const
{
    return pImpl->aName;
}
 
 
bool SfxItemPool::GetPresentation
(
    const SfxPoolItem&  rItem,
    MapUnit             eMetric,
    OUString&           rText,
    const IntlWrapper&  rIntlWrapper
)   const
{
    return rItem.GetPresentation(
        SfxItemPresentation::Complete, GetMetric(rItem.Which()), eMetric, rText, rIntlWrapper );
}
 
 
rtl::Reference<SfxItemPool> SfxItemPool::Clone() const
{
    return new SfxItemPool( *this );
}
 
 
void SfxItemPool::Delete()
{
    // Already deleted?
    if (pImpl->maPoolItemArrays.empty() || pImpl->maPoolDefaults.empty())
        return;
 
    // Inform e.g. running Requests
    pImpl->aBC.Broadcast( SfxHint( SfxHintId::Dying ) );
 
    // Iterate through twice: first for the SetItems.
    if (pImpl->mpStaticDefaults != nullptr) {
        for (size_t n = 0; n < GetSize_Impl(); ++n)
        {
            // *mpStaticDefaultItem could've already been deleted in a class derived
            // from SfxItemPool
            // This causes chaos in Itempool!
            const SfxPoolItem* pStaticDefaultItem = (*pImpl->mpStaticDefaults)[n];
            if (dynamic_cast<const SfxSetItem*>(pStaticDefaultItem))
            {
                // SfxSetItem found, remove PoolItems (and defaults) with same ID
                auto& rArray = pImpl->maPoolItemArrays[n];
                for (auto& rItemPtr : rArray)
                {
                    ReleaseRef(*rItemPtr, rItemPtr->GetRefCount()); // for RefCount check in dtor
                    delete rItemPtr;
                }
                rArray.clear();
                // let pImpl->DeleteItems() delete item arrays in maPoolItems
                auto& rItemPtr = pImpl->maPoolDefaults[n];
                if (rItemPtr)
                {
#ifdef DBG_UTIL
                    ClearRefCount(*rItemPtr);
#endif
                    delete rItemPtr;
                    rItemPtr = nullptr;
                }
            }
        }
    }
 
    // now remove remaining PoolItems (and defaults) who didn't have SetItems
    for (auto& rArray : pImpl->maPoolItemArrays)
    {
        for (auto& rItemPtr : rArray)
        {
            ReleaseRef(*rItemPtr, rItemPtr->GetRefCount()); // for RefCount check in dtor
            delete rItemPtr;
        }
        rArray.clear();
        // let pImpl->DeleteItems() delete item arrays in maPoolItems
    }
    pImpl->maPoolItemArrays.clear();
    // default items
    for (auto rItemPtr : pImpl->maPoolDefaults)
    {
        if (rItemPtr)
        {
#ifdef DBG_UTIL
            ClearRefCount(*rItemPtr);
#endif
            delete rItemPtr;
            rItemPtr = nullptr;
        }
    }
 
    pImpl->DeleteItems();
}
 
 
void SfxItemPool::SetPoolDefaultItem(const SfxPoolItem &rItem)
{
    if ( IsInRange(rItem.Which()) )
    {
        auto& rOldDefault =
            pImpl->maPoolDefaults[GetIndex_Impl(rItem.Which())];
        SfxPoolItem *pNewDefault = rItem.Clone(this);
        pNewDefault->SetKind(SfxItemKind::PoolDefault);
        if (rOldDefault)
        {
            rOldDefault->SetRefCount(0);
            delete rOldDefault;
            rOldDefault = nullptr;
        }
        rOldDefault = pNewDefault;
    }
    else if ( pImpl->mpSecondary )
        pImpl->mpSecondary->SetPoolDefaultItem(rItem);
    else
    {
        assert(false && "unknown WhichId - cannot set pool default");
    }
}
 
void SfxItemPool::ResetPoolDefaultItem( sal_uInt16 nWhichId )
{
    if ( IsInRange(nWhichId) )
    {
        auto& rOldDefault =
            pImpl->maPoolDefaults[GetIndex_Impl(nWhichId)];
        if (rOldDefault)
        {
            rOldDefault->SetRefCount(0);
            delete rOldDefault;
            rOldDefault = nullptr;
        }
    }
    else if ( pImpl->mpSecondary )
        pImpl->mpSecondary->ResetPoolDefaultItem(nWhichId);
    else
    {
        assert(false && "unknown WhichId - cannot reset pool default");
    }
}
 
 
const SfxPoolItem& SfxItemPool::PutImpl( const SfxPoolItem& rItem, sal_uInt16 nWhich, bool bPassingOwnership )
{
    if ( 0 == nWhich )
        nWhich = rItem.Which();
 
    // Find correct Secondary Pool
    bool bSID = IsSlot(nWhich);
    if ( !bSID && !IsInRange(nWhich) )
    {
        if ( pImpl->mpSecondary )
            return pImpl->mpSecondary->PutImpl( rItem, nWhich, bPassingOwnership );
        OSL_FAIL( "unknown WhichId - cannot put item" );
    }
 
    // SID ?
    if (bSID)
    {
        assert((rItem.Which() != nWhich ||
            !IsDefaultItem(&rItem) || rItem.GetKind() == SfxItemKind::DeleteOnIdle)
                && "a non Pool Item is Default?!");
        SfxPoolItem *pPoolItem = rItem.Clone(pImpl->mpMaster);
        pPoolItem->SetWhich(nWhich);
        AddRef( *pPoolItem );
        if (bPassingOwnership)
            delete &rItem;
        return *pPoolItem;
    }
 
    assert(!pImpl->mpStaticDefaults ||
            typeid(rItem) == typeid(GetDefaultItem(nWhich)));
 
    const sal_uInt16 nIndex = GetIndex_Impl(nWhich);
    SfxPoolItemArray_Impl& rItemArr = pImpl->maPoolItemArrays[nIndex];
 
    // Is this a 'poolable' item - ie. should we re-use and return
    // the same underlying item for equivalent (==) SfxPoolItems?
    if ( IsItemPoolable_Impl( nIndex ) )
    {
        // if is already in a pool, then it is worth checking if it is in this one.
        if ( IsPooledItem(&rItem) )
        {
            // 1. search for an identical pointer in the pool
            auto it = rItemArr.find(const_cast<SfxPoolItem *>(&rItem));
            if (it != rItemArr.end())
            {
                AddRef(rItem);
                assert(!bPassingOwnership && "can't be passing ownership and have the item already in the pool");
                return rItem;
            }
        }
 
        const SfxPoolItem* pFoundItem = nullptr;
        // 2. search for an item with matching attributes.
        if (rItem.IsSortable())
        {
            pFoundItem = rItemArr.findByLessThan(&rItem);
            if (pFoundItem)
                assert(*pFoundItem == rItem);
        }
        else if(rItem.HasLookup())
        {
            auto it = rItem.Lookup(rItemArr.begin(), rItemArr.end());
            if( it != rItemArr.end())
                pFoundItem = *it;
        }
        else
        {
            for (auto it = rItemArr.begin(); it != rItemArr.end(); ++it)
            {
                if (**it == rItem)
                {
                    pFoundItem = *it;
                    break;
                }
            }
        }
        if (pFoundItem)
        {
            assert((!bPassingOwnership || (&rItem != pFoundItem)) && "can't be passing ownership and have the item already in the pool");
            AddRef(*pFoundItem);
            if (bPassingOwnership)
                delete &rItem;
            return *pFoundItem;
        }
    }
 
    // 3. not found, so clone to insert into the pointer array.
    SfxPoolItem* pNewItem;
    if (bPassingOwnership)
    {
#ifndef NDEBUG
        if (auto pSetItem = dynamic_cast<const SfxSetItem*>(&rItem))
            assert(pSetItem->GetItemSet().GetPool() == pImpl->mpMaster && "can't pass ownership of SfxSetItem, unless they have been cloned to the master pool");
#endif
        pNewItem = const_cast<SfxPoolItem*>(&rItem);
    }
    else
        pNewItem = rItem.Clone(pImpl->mpMaster);
    pNewItem->SetWhich(nWhich);
    assert(typeid(rItem) == typeid(*pNewItem) && "SfxItemPool::Put(): unequal types, no Clone() override?");
#ifndef NDEBUG
    if (dynamic_cast<const SfxSetItem*>(&rItem) == nullptr)
    {
        assert((!IsItemPoolable(nWhich) || rItem == *pNewItem)
            && "SfxItemPool::Put(): unequal items: no operator== override?");
        assert((!IsItemPoolable(*pNewItem) || *pNewItem == rItem)
            && "SfxItemPool::Put(): unequal items: no operator== override?");
    }
#endif
    AddRef( *pNewItem );
 
    // 4. finally insert into the pointer array
    rItemArr.insert( pNewItem );
    return *pNewItem;
}
 
void SfxItemPool::Remove( const SfxPoolItem& rItem )
{
    assert(!IsPoolDefaultItem(&rItem) && "cannot remove Pool Default");
 
    // Find correct Secondary Pool
    const sal_uInt16 nWhich = rItem.Which();
    bool bSID = IsSlot(nWhich);
    if ( !bSID && !IsInRange(nWhich) )
    {
        if ( pImpl->mpSecondary )
        {
            pImpl->mpSecondary->Remove( rItem );
            return;
        }
        OSL_FAIL( "unknown WhichId - cannot remove item" );
    }
 
    // SID ?
    if ( bSID )
    {
        assert(!IsDefaultItem(&rItem) && "a non Pool Item is Default?!");
        if ( 0 == ReleaseRef(rItem) )
        {
            delete &rItem;
        }
        return;
    }
 
    assert(rItem.GetRefCount() && "RefCount == 0, Remove impossible");
 
    const sal_uInt16 nIndex = GetIndex_Impl(nWhich);
    // Static Defaults are just there
    if ( IsStaticDefaultItem(&rItem) &&
         &rItem == (*pImpl->mpStaticDefaults)[nIndex])
        return;
 
    // Find Item in own Pool
    SfxPoolItemArray_Impl& rItemArr = pImpl->maPoolItemArrays[nIndex];
 
    auto it = rItemArr.find(const_cast<SfxPoolItem *>(&rItem));
    if (it != rItemArr.end())
    {
        if ( rItem.GetRefCount() ) 
            ReleaseRef( rItem );
        else
        {
            assert(false && "removing Item without ref");
        }
 
        // FIXME: Hack, for as long as we have problems with the Outliner
        // See other MI-REF
        if ( 0 == rItem.GetRefCount() && nWhich < 4000 )
        {
            rItemArr.erase(it);
            delete &rItem;
        }
 
        return;
    }
 
    // not found
    assert(false && "removing Item not in Pool");
}
 
 
const SfxPoolItem& SfxItemPool::GetDefaultItem( sal_uInt16 nWhich ) const
{
    if ( !IsInRange(nWhich) )
    {
        if ( pImpl->mpSecondary )
            return pImpl->mpSecondary->GetDefaultItem( nWhich );
        assert(!"unknown which - don't ask me for defaults");
    }
 
    DBG_ASSERT( pImpl->mpStaticDefaults, "no defaults known - don't ask me for defaults" );
    sal_uInt16 nPos = GetIndex_Impl(nWhich);
    SfxPoolItem* pDefault = pImpl->maPoolDefaults[nPos];
    if ( pDefault )
        return *pDefault;
    return *(*pImpl->mpStaticDefaults)[nPos];
}
 
SfxItemPool* SfxItemPool::GetSecondaryPool() const
{
    return pImpl->mpSecondary.get();
}
 
/* get the last pool by following the GetSecondaryPool chain */
SfxItemPool* SfxItemPool::GetLastPoolInChain()
{
    SfxItemPool* pLast = this;
    while(pLast->GetSecondaryPool())
        pLast = pLast->GetSecondaryPool();
    return pLast;
}
 
SfxItemPool* SfxItemPool::GetMasterPool() const
{
    return pImpl->mpMaster;
}
 
void SfxItemPool::FreezeIdRanges()
{
    assert(pImpl->mpPoolRanges.empty() && "pool already frozen, cannot freeze twice");
    FillItemIdRanges_Impl( pImpl->mpPoolRanges );
}
 
 
void SfxItemPool::FillItemIdRanges_Impl( WhichRangesContainer& pWhichRanges ) const
{
    DBG_ASSERT( pImpl->mpPoolRanges.empty(), "GetFrozenRanges() would be faster!" );
 
    pWhichRanges.reset();
 
    // Merge all ranges, keeping them sorted
    for (const SfxItemPool* pPool = this; pPool; pPool = pPool->pImpl->mpSecondary.get())
        pWhichRanges = pWhichRanges.MergeRange(pPool->pImpl->mnStart, pPool->pImpl->mnEnd);
}
 
const WhichRangesContainer& SfxItemPool::GetFrozenIdRanges() const
{
    return pImpl->mpPoolRanges;
}
 
const SfxPoolItem *SfxItemPool::GetItem2Default(sal_uInt16 nWhich) const
{
    if ( !IsInRange(nWhich) )
    {
        if ( pImpl->mpSecondary )
            return pImpl->mpSecondary->GetItem2Default( nWhich );
        assert(false && "unknown WhichId - cannot resolve surrogate");
        return nullptr;
    }
    return (*pImpl->mpStaticDefaults)[ GetIndex_Impl(nWhich) ];
}
 
SfxItemPool::Item2Range SfxItemPool::GetItemSurrogates(sal_uInt16 nWhich) const
{
    static const o3tl::sorted_vector<SfxPoolItem*> EMPTY;
 
    if ( !IsInRange(nWhich) )
    {
        if ( pImpl->mpSecondary )
            return pImpl->mpSecondary->GetItemSurrogates( nWhich );
        assert(false && "unknown WhichId - cannot resolve surrogate");
        return { EMPTY.end(), EMPTY.end() };
    }
 
    SfxPoolItemArray_Impl& rItemArr = pImpl->maPoolItemArrays[GetIndex_Impl(nWhich)];
    return { rItemArr.begin(), rItemArr.end() };
}
 
/* This is only valid for SfxPoolItem that override IsSortable and operator< */
std::vector<const SfxPoolItem*> SfxItemPool::FindItemSurrogate(sal_uInt16 nWhich, SfxPoolItem const & rSample) const
{
    if ( !IsInRange(nWhich) )
    {
        if ( pImpl->mpSecondary )
            return pImpl->mpSecondary->FindItemSurrogate( nWhich, rSample );
        assert(false && "unknown WhichId - cannot resolve surrogate");
        return std::vector<const SfxPoolItem*>();
    }
 
    SfxPoolItemArray_Impl& rItemArr = pImpl->maPoolItemArrays[GetIndex_Impl(nWhich)];
    return rItemArr.findSurrogateRange(&rSample);
}
 
sal_uInt32 SfxItemPool::GetItemCount2(sal_uInt16 nWhich) const
{
    if ( !IsInRange(nWhich) )
    {
        if ( pImpl->mpSecondary )
            return pImpl->mpSecondary->GetItemCount2( nWhich );
        assert(false && "unknown WhichId - cannot resolve surrogate");
        return 0;
    }
 
    SfxPoolItemArray_Impl& rItemArr = pImpl->maPoolItemArrays[GetIndex_Impl(nWhich)];
    return rItemArr.size();
}
 
 
sal_uInt16 SfxItemPool::GetWhich( sal_uInt16 nSlotId, bool bDeep ) const
{
    if ( !IsSlot(nSlotId) )
        return nSlotId;
 
    sal_uInt16 nCount = pImpl->mnEnd - pImpl->mnStart + 1;
    for ( sal_uInt16 nOfs = 0; nOfs < nCount; ++nOfs )
        if ( pItemInfos[nOfs]._nSID == nSlotId )
            return nOfs + pImpl->mnStart;
    if ( pImpl->mpSecondary && bDeep )
        return pImpl->mpSecondary->GetWhich(nSlotId);
    return nSlotId;
}
 
 
sal_uInt16 SfxItemPool::GetSlotId( sal_uInt16 nWhich ) const
{
    if ( !IsWhich(nWhich) )
        return nWhich;
 
    if ( !IsInRange( nWhich ) )
    {
        if ( pImpl->mpSecondary )
            return pImpl->mpSecondary->GetSlotId(nWhich);
        assert(false && "unknown WhichId - cannot get slot-id");
        return 0;
    }
 
    sal_uInt16 nSID = pItemInfos[nWhich - pImpl->mnStart]._nSID;
    return nSID ? nSID : nWhich;
}
 
 
sal_uInt16 SfxItemPool::GetTrueWhich( sal_uInt16 nSlotId, bool bDeep ) const
{
    if ( !IsSlot(nSlotId) )
        return 0;
 
    sal_uInt16 nCount = pImpl->mnEnd - pImpl->mnStart + 1;
    for ( sal_uInt16 nOfs = 0; nOfs < nCount; ++nOfs )
        if ( pItemInfos[nOfs]._nSID == nSlotId )
            return nOfs + pImpl->mnStart;
    if ( pImpl->mpSecondary && bDeep )
        return pImpl->mpSecondary->GetTrueWhich(nSlotId);
    return 0;
}
 
 
sal_uInt16 SfxItemPool::GetTrueSlotId( sal_uInt16 nWhich ) const
{
    if ( !IsWhich(nWhich) )
        return 0;
 
    if ( !IsInRange( nWhich ) )
    {
        if ( pImpl->mpSecondary )
            return pImpl->mpSecondary->GetTrueSlotId(nWhich);
        assert(false && "unknown WhichId - cannot get slot-id");
        return 0;
    }
    return pItemInfos[nWhich - pImpl->mnStart]._nSID;
}
 
void SfxItemPool::dumpAsXml(xmlTextWriterPtr pWriter) const
{
    (void)xmlTextWriterStartElement(pWriter, BAD_CAST("SfxItemPool"));
    for (auto const & rArray : pImpl->maPoolItemArrays)
        for (auto const & rItem : rArray)
            rItem->dumpAsXml(pWriter);
    (void)xmlTextWriterEndElement(pWriter);
}
 
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */