sd/source/core/shapelist.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 <svx/svdobj.hxx>
  21 #include <osl/diagnose.h>
  22 #include <shapelist.hxx>
  23
  24 #include <algorithm>
  25
  26 using namespace sd;
  27
  28 ShapeList::ShapeList()
  29 {
  30     maIter = maShapeList.end();
  31 }
  32
  33 ShapeList::~ShapeList()
  34 {
  35     clear();
  36 }
  37
  38 /** adds the given shape to this list */
  39 void ShapeList::addShape( SdrObject& rObject )
  40 {
  41     if( maShapeSet.insert(&rObject).second )
  42     {
  43         maShapeList.push_back(&rObject);
  44         rObject.AddObjectUser( *this );
  45     }
  46     else
  47     {
  48         OSL_FAIL("sd::ShapeList::addShape(), given shape already part of list!");
  49     }
  50 }
  51
  52 /** removes the given shape from this list */
  53 void ShapeList::removeShape( SdrObject& rObject )
  54 {
  55     if( maShapeSet.erase(&rObject) )
  56     {
  57         ListImpl::iterator aIter( std::find( maShapeList.begin(), maShapeList.end(), &rObject ) );
  58         bool bIterErased = aIter == maIter;
  59
  60         (*aIter)->RemoveObjectUser(*this);
  61         aIter = maShapeList.erase( aIter );
  62
  63         if( bIterErased )
  64             maIter = aIter;
  65     }
  66     else
  67     {
  68         OSL_FAIL("sd::ShapeList::removeShape(), given shape not part of list!");
  69     }
  70 }
  71
  72 /** removes all shapes from this list
  73     NOTE: iterators will become invalid */
  74 void ShapeList::clear()
  75 {
  76     ListImpl aShapeList;
  77     aShapeList.swap( maShapeList );
  78     maShapeSet.clear();
  79
  80     for( auto& rpShape : aShapeList )
  81         rpShape->RemoveObjectUser(*this);
  82
  83     maIter = maShapeList.end();
  84 }
  85
  86 /** returns true if this list is empty */
  87 bool ShapeList::isEmpty() const
  88 {
  89     return maShapeList.empty();
  90 }
  91
  92 /** returns true if given shape is part of this list */
  93 bool ShapeList::hasShape( SdrObject& rObject ) const
  94 {
  95     return maShapeSet.contains( &rObject );
  96 }
  97
  98 void ShapeList::ObjectInDestruction(const SdrObject& rObject)
  99 {
 100     if( maShapeSet.erase(&rObject) )
 101     {
 102         ListImpl::iterator aIter( std::find( maShapeList.begin(), maShapeList.end(), &rObject ) );
 103         bool bIterErased = aIter == maIter;
 104
 105         aIter = maShapeList.erase( aIter );
 106
 107         if( bIterErased )
 108             maIter = aIter;
 109     }
 110     else
 111     {
 112         OSL_FAIL("sd::ShapeList::ObjectInDestruction(), got a call from an unknown friend!");
 113     }
 114 }
 115
 116 SdrObject* ShapeList::getNextShape()
 117 {
 118     if( maIter != maShapeList.end() )
 119     {
 120         return (*maIter++);
 121     }
 122     else
 123     {
 124         return nullptr;
 125     }
 126 }
 127
 128 void ShapeList::seekShape( sal_uInt32 nIndex )
 129 {
 130     maIter = maShapeList.begin();
 131     nIndex = std::min(nIndex, static_cast<sal_uInt32>(maShapeList.size()));
 132     std::advance(maIter, nIndex);
 133 }
 134
 135 bool ShapeList::hasMore() const
 136 {
 137     return maIter != maShapeList.end();
 138 }
 139
 140 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */