nochaos.cxx

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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 * 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
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 *   ownership. The ASF licenses this file to you under the Apache
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#include <sal/config.h>
 
#include <svl/itempool.hxx>
#include <svl/poolitem.hxx>
#include <svl/stritem.hxx>
#include <nochaos.hxx>
#include <memory>
 
 
#define WID_CHAOS_START TypedWhichId<SfxStringItem>(500)
 
 
namespace {
 
class CntItemPool;
 
class CntStaticPoolDefaults_Impl
{
    static const sal_uInt32  m_nItems = 1;
    std::vector<SfxPoolItem*> mvDefaults;
    std::unique_ptr<SfxItemInfo[]>  m_pItemInfos;
 
private:
    inline void Insert( SfxPoolItem* pItem );
 
public:
    explicit CntStaticPoolDefaults_Impl();
    ~CntStaticPoolDefaults_Impl();
    CntStaticPoolDefaults_Impl(const CntStaticPoolDefaults_Impl&) = delete;
    CntStaticPoolDefaults_Impl& operator=(const CntStaticPoolDefaults_Impl&) = delete;
 
    std::vector<SfxPoolItem*>*  GetDefaults() { return &mvDefaults; }
    const SfxItemInfo*          GetItemInfos() const { return m_pItemInfos.get(); }
};
 
 
class CntItemPool: public SfxItemPool
{
    static CntItemPool* _pThePool;
    sal_uInt16              _nRefs;
 
protected:
             CntItemPool();
    virtual ~CntItemPool() override;
 
public:
    static CntItemPool* Acquire();
    static sal_uInt16       Release();
};
 
}
 
// static
SfxItemPool* NoChaos::GetItemPool()
{
    // Get and hold CHAOS item pool.
    return CntItemPool::Acquire();
}
 
 
// static
sal_uInt16 NoChaos::ReleaseItemPool()
{
    // Release CHAOS item pool.
    return CntItemPool::Release();
}
 
 
//  CntItemPool implementation
 
 
static CntStaticPoolDefaults_Impl* pPoolDefs_Impl = nullptr;
 
// static member!
CntItemPool* CntItemPool::_pThePool = nullptr;
 
 
CntItemPool::CntItemPool()
: SfxItemPool( "chaos", WID_CHAOS_START, WID_CHAOS_START, nullptr ),
  _nRefs( 0 )
{
    FreezeIdRanges();
 
    // Create static defaults.
    pPoolDefs_Impl = new CntStaticPoolDefaults_Impl;
 
    // Set item infos.
    SetItemInfos( pPoolDefs_Impl->GetItemInfos() );
 
    // Set static pool default items.
    SetDefaults( pPoolDefs_Impl->GetDefaults() );
}
 
 
//virtual
CntItemPool::~CntItemPool()
{
    // Release static pool default items.
    ReleaseDefaults();
}
 
 
// static
CntItemPool* CntItemPool::Acquire()
{
    if ( !_pThePool )
        _pThePool = new CntItemPool;
 
    _pThePool->_nRefs++;
 
    return _pThePool;
}
 
 
// static
sal_uInt16 CntItemPool::Release()
{
    if ( !_pThePool )
        return 0;
 
    sal_uInt16& nRefs = _pThePool->_nRefs;
 
    if ( nRefs )
        --nRefs;
 
    if ( !nRefs )
    {
        delete _pThePool;
        _pThePool = nullptr;
        delete pPoolDefs_Impl;
        pPoolDefs_Impl = nullptr;
        return 0;
    }
 
    return nRefs;
}
 
 
// CntStaticPoolDefaults_Impl implementation.
 
 
inline void CntStaticPoolDefaults_Impl::Insert(
         SfxPoolItem* pItem        /* Static Pool Default Item */ )
{
    sal_uInt16 nPos = pItem->Which() - WID_CHAOS_START;
 
    mvDefaults[ nPos ]         = pItem;
    m_pItemInfos[ nPos ]._nSID   = 0;
    m_pItemInfos[ nPos ]._bPoolable = true;
}
 
 
CntStaticPoolDefaults_Impl::~CntStaticPoolDefaults_Impl()
{
    for ( sal_uInt32 n = 0; n < m_nItems; ++n )
        delete mvDefaults[ n ];
}
 
 
CntStaticPoolDefaults_Impl::CntStaticPoolDefaults_Impl()
: mvDefaults( m_nItems, nullptr ),
  m_pItemInfos( new SfxItemInfo  [ m_nItems ] )
{
    memset( m_pItemInfos.get(), 0, sizeof( SfxItemInfo ) * m_nItems );
    Insert( new SfxStringItem( WID_CHAOS_START, OUString() ) );
}
 
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