sw/source/core/text/txtcache.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 "txtcache.hxx"
  21 #include "txtfrm.hxx"
  22 #include "porlay.hxx"
  23
  24 /*************************************************************************
  25 |*
  26 |*  SwTxtLine::SwTxtLine(), ~SwTxtLine()
  27 |*
  28 |*************************************************************************/
  29
  30 SwTxtLine::SwTxtLine( SwTxtFrm *pFrm, SwParaPortion *pNew ) :
  31     SwCacheObj( (void*)pFrm ),
  32     pLine( pNew )
  33 {
  34 }
  35
  36 SwTxtLine::~SwTxtLine()
  37 {
  38     delete pLine;
  39 }
  40
  41 /*************************************************************************
  42 |*
  43 |*  SwTxtLineAccess::NewObj()
  44 |*
  45 |*************************************************************************/
  46
  47 SwCacheObj *SwTxtLineAccess::NewObj()
  48 {
  49     return new SwTxtLine( (SwTxtFrm*)pOwner );
  50 }
  51
  52 /*************************************************************************
  53 |*
  54 |*  SwTxtLineAccess::GetPara()
  55 |*
  56 |*************************************************************************/
  57
  58 SwParaPortion *SwTxtLineAccess::GetPara()
  59 {
  60     SwTxtLine *pRet;
  61     if ( pObj )
  62         pRet = (SwTxtLine*)pObj;
  63     else
  64     {
  65         pRet = (SwTxtLine*)Get();
  66         ((SwTxtFrm*)pOwner)->SetCacheIdx( pRet->GetCachePos() );
  67     }
  68     if ( !pRet->GetPara() )
  69         pRet->SetPara( new SwParaPortion );
  70     return pRet->GetPara();
  71 }
  72
  73
  74 /*************************************************************************
  75 |*
  76 |*  SwTxtLineAccess::SwTxtLineAccess()
  77 |*
  78 |*************************************************************************/
  79
  80 SwTxtLineAccess::SwTxtLineAccess( const SwTxtFrm *pOwn ) :
  81     SwCacheAccess( *SwTxtFrm::GetTxtCache(), pOwn, pOwn->GetCacheIdx() )
  82 {
  83 }
  84
  85 /*************************************************************************
  86 |*
  87 |*  SwTxtLineAccess::IsAvailable
  88 |*
  89 |*************************************************************************/
  90
  91 sal_Bool SwTxtLineAccess::IsAvailable() const
  92 {
  93     if ( pObj )
  94         return ((SwTxtLine*)pObj)->GetPara() != 0;
  95     return sal_False;
  96 }
  97
  98 /*************************************************************************
  99 |*
 100 |*  SwTxtFrm::HasPara()
 101 |*
 102 |*************************************************************************/
 103
 104 sal_Bool SwTxtFrm::_HasPara() const
 105 {
 106     SwTxtLine *pTxtLine = (SwTxtLine*)SwTxtFrm::GetTxtCache()->
 107                                             Get( this, GetCacheIdx(), sal_False );
 108     if ( pTxtLine )
 109     {
 110         if ( pTxtLine->GetPara() )
 111             return sal_True;
 112     }
 113     else
 114         ((SwTxtFrm*)this)->nCacheIdx = MSHRT_MAX;
 115
 116     return sal_False;
 117 }
 118
 119 /*************************************************************************
 120 |*
 121 |*  SwTxtFrm::GetPara()
 122 |*
 123 |*************************************************************************/
 124
 125 SwParaPortion *SwTxtFrm::GetPara()
 126 {
 127     if ( GetCacheIdx() != MSHRT_MAX )
 128     {   SwTxtLine *pLine = (SwTxtLine*)SwTxtFrm::GetTxtCache()->
 129                                         Get( this, GetCacheIdx(), sal_False );
 130         if ( pLine )
 131             return pLine->GetPara();
 132         else
 133             nCacheIdx = MSHRT_MAX;
 134     }
 135     return 0;
 136 }
 137
 138
 139 /*************************************************************************
 140 |*
 141 |*  SwTxtFrm::ClearPara()
 142 |*
 143 |*************************************************************************/
 144
 145 void SwTxtFrm::ClearPara()
 146 {
 147     OSL_ENSURE( !IsLocked(), "+SwTxtFrm::ClearPara: this is locked." );
 148     if ( !IsLocked() && GetCacheIdx() != MSHRT_MAX )
 149     {
 150         SwTxtLine *pTxtLine = (SwTxtLine*)SwTxtFrm::GetTxtCache()->
 151                                         Get( this, GetCacheIdx(), sal_False );
 152         if ( pTxtLine )
 153         {
 154             delete pTxtLine->GetPara();
 155             pTxtLine->SetPara( 0 );
 156         }
 157         else
 158             nCacheIdx = MSHRT_MAX;
 159     }
 160 }
 161
 162 /*************************************************************************
 163 |*
 164 |*  SwTxtFrm::SetPara()
 165 |*
 166 |*************************************************************************/
 167
 168 void SwTxtFrm::SetPara( SwParaPortion *pNew, sal_Bool bDelete )
 169 {
 170     if ( GetCacheIdx() != MSHRT_MAX )
 171     {
 172         // Only change the information, the CacheObj stays there
 173         SwTxtLine *pTxtLine = (SwTxtLine*)SwTxtFrm::GetTxtCache()->
 174                                         Get( this, GetCacheIdx(), sal_False );
 175         if ( pTxtLine )
 176         {
 177             if( bDelete )
 178                 delete pTxtLine->GetPara();
 179             pTxtLine->SetPara( pNew );
 180         }
 181         else
 182         {
 183             OSL_ENSURE( !pNew, "+SetPara: Losing SwParaPortion" );
 184             nCacheIdx = MSHRT_MAX;
 185         }
 186     }
 187     else if ( pNew )
 188     {   // Insert a new one
 189         SwTxtLine *pTxtLine = new SwTxtLine( this, pNew );
 190         if ( SwTxtFrm::GetTxtCache()->Insert( pTxtLine ) )
 191             nCacheIdx = pTxtLine->GetCachePos();
 192         else
 193         {
 194             OSL_FAIL( "+SetPara: InsertCache failed." );
 195         }
 196     }
 197 }
 198
 199
 200 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */