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     ListImpl::iterator aIter( std::find( maShapeList.begin(), maShapeList.end(), &rObject ) );
  42     if( aIter == maShapeList.end() )
  43     {
  44         maShapeList.push_back(&rObject);
  45         rObject.AddObjectUser( *this );
  46     }
  47     else
  48     {
  49         OSL_FAIL("sd::ShapeList::addShape(), given shape already part of list!");
  50     }
  51 }
  52
  53 /** removes the given shape from this list */
  54 void ShapeList::removeShape( SdrObject& rObject )
  55 {
  56     ListImpl::iterator aIter( std::find( maShapeList.begin(), maShapeList.end(), &rObject ) );
  57     if( aIter != maShapeList.end() )
  58     {
  59         bool bIterErased = aIter == maIter;
  60
  61         (*aIter)->RemoveObjectUser(*this);
  62         aIter = maShapeList.erase( aIter );
  63
  64         if( bIterErased )
  65             maIter = aIter;
  66     }
  67     else
  68     {
  69         OSL_FAIL("sd::ShapeList::removeShape(), given shape not part of list!");
  70     }
  71 }
  72
  73 /** removes all shapes from this list
  74     NOTE: iterators will become invalid */
  75 void ShapeList::clear()
  76 {
  77     ListImpl aShapeList;
  78     aShapeList.swap( maShapeList );
  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 std::find( maShapeList.begin(), maShapeList.end(), &rObject )  != maShapeList.end();
  96 }
  97
  98 void ShapeList::ObjectInDestruction(const SdrObject& rObject)
  99 {
 100     ListImpl::iterator aIter( std::find( maShapeList.begin(), maShapeList.end(), &rObject ) );
 101     if( aIter != maShapeList.end() )
 102     {
 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: */