sfx2/source/explorer/nochaos.cxx

   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 <sal/config.h>
  21
  22 #include <svl/itempool.hxx>
  23 #include <svl/poolitem.hxx>
  24 #include <svl/stritem.hxx>
  25 #include <nochaos.hxx>
  26 #include <memory>
  27
  28
  29 #define WID_CHAOS_START 500
  30
  31
  32 namespace {
  33
  34 class CntItemPool;
  35
  36 class CntStaticPoolDefaults_Impl
  37 {
  38     static const sal_uInt32  m_nItems = 1;
  39     std::vector<SfxPoolItem*> mvDefaults;
  40     std::unique_ptr<SfxItemInfo[]>  m_pItemInfos;
  41
  42 private:
  43     inline void Insert( SfxPoolItem* pItem );
  44
  45 public:
  46     explicit CntStaticPoolDefaults_Impl();
  47     ~CntStaticPoolDefaults_Impl();
  48     CntStaticPoolDefaults_Impl(const CntStaticPoolDefaults_Impl&) = delete;
  49     CntStaticPoolDefaults_Impl& operator=(const CntStaticPoolDefaults_Impl&) = delete;
  50
  51     std::vector<SfxPoolItem*>*  GetDefaults() { return &mvDefaults; }
  52     const SfxItemInfo*          GetItemInfos() const { return m_pItemInfos.get(); }
  53 };
  54
  55
  56 class CntItemPool: public SfxItemPool
  57 {
  58     static CntItemPool* _pThePool;
  59     sal_uInt16              _nRefs;
  60
  61 protected:
  62              CntItemPool();
  63     virtual ~CntItemPool() override;
  64
  65 public:
  66     static CntItemPool* Acquire();
  67     static sal_uInt16       Release();
  68 };
  69
  70 }
  71
  72 // static
  73 SfxItemPool* NoChaos::GetItemPool()
  74 {
  75     // Get and hold CHAOS item pool.
  76     return CntItemPool::Acquire();
  77 }
  78
  79
  80 // static
  81 sal_uInt16 NoChaos::ReleaseItemPool()
  82 {
  83     // Release CHAOS item pool.
  84     return CntItemPool::Release();
  85 }
  86
  87
  88 //  CntItemPool implementation
  89
  90
  91 static CntStaticPoolDefaults_Impl* pPoolDefs_Impl = nullptr;
  92
  93 // static member!
  94 CntItemPool* CntItemPool::_pThePool = nullptr;
  95
  96
  97 CntItemPool::CntItemPool()
  98 : SfxItemPool( "chaos", WID_CHAOS_START, WID_CHAOS_START, nullptr ),
  99   _nRefs( 0 )
 100 {
 101     FreezeIdRanges();
 102
 103     // Create static defaults.
 104     pPoolDefs_Impl = new CntStaticPoolDefaults_Impl;
 105
 106     // Set item infos.
 107     SetItemInfos( pPoolDefs_Impl->GetItemInfos() );
 108
 109     // Set static pool default items.
 110     SetDefaults( pPoolDefs_Impl->GetDefaults() );
 111 }
 112
 113
 114 //virtual
 115 CntItemPool::~CntItemPool()
 116 {
 117     // Release static pool default items.
 118     ReleaseDefaults();
 119 }
 120
 121
 122 // static
 123 CntItemPool* CntItemPool::Acquire()
 124 {
 125     if ( !_pThePool )
 126         _pThePool = new CntItemPool;
 127
 128     _pThePool->_nRefs++;
 129
 130     return _pThePool;
 131 }
 132
 133
 134 // static
 135 sal_uInt16 CntItemPool::Release()
 136 {
 137     if ( !_pThePool )
 138         return 0;
 139
 140     sal_uInt16& nRefs = _pThePool->_nRefs;
 141
 142     if ( nRefs )
 143         --nRefs;
 144
 145     if ( !nRefs )
 146     {
 147         delete _pThePool;
 148         _pThePool = nullptr;
 149         delete pPoolDefs_Impl;
 150         pPoolDefs_Impl = nullptr;
 151         return 0;
 152     }
 153
 154     return nRefs;
 155 }
 156
 157
 158 // CntStaticPoolDefaults_Impl implementation.
 159
 160
 161 inline void CntStaticPoolDefaults_Impl::Insert(
 162          SfxPoolItem* pItem        /* Static Pool Default Item */ )
 163 {
 164     sal_uInt16 nPos = pItem->Which() - WID_CHAOS_START;
 165
 166     mvDefaults[ nPos ]         = pItem;
 167     m_pItemInfos[ nPos ]._nSID   = 0;
 168     m_pItemInfos[ nPos ]._bPoolable = true;
 169 }
 170
 171
 172 CntStaticPoolDefaults_Impl::~CntStaticPoolDefaults_Impl()
 173 {
 174     for ( sal_uInt32 n = 0; n < m_nItems; ++n )
 175         delete mvDefaults[ n ];
 176 }
 177
 178
 179 CntStaticPoolDefaults_Impl::CntStaticPoolDefaults_Impl()
 180 : mvDefaults( m_nItems, nullptr ),
 181   m_pItemInfos( new SfxItemInfo  [ m_nItems ] )
 182 {
 183     memset( m_pItemInfos.get(), 0, sizeof( SfxItemInfo ) * m_nItems );
 184     Insert( new SfxStringItem( WID_CHAOS_START, OUString() ) );
 185 }
 186
 187 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */