src/frontends/qt4/TocModel.cpp

   1 /**
   2  * \file TocModel.cpp
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author John Levon
   7  * \author Abdelrazak Younes
   8  *
   9  * Full author contact details are available in file CREDITS.
  10  */
  11
  12 #include <config.h>
  13
  14 #include "TocModel.h"
  15
  16 #include "debug.h"
  17
  18 #include <boost/assert.hpp>
  19
  20 using std::endl;
  21 using std::map;
  22 using std::max;
  23 using std::min;
  24
  25 namespace lyx {
  26 namespace frontend {
  27
  28
  29 TocModel::TocModel(Toc const & toc)
  30 {
  31         populate(toc);
  32 }
  33
  34
  35 TocModel const & TocModel::operator=(Toc const & toc)
  36 {
  37         populate(toc);
  38         return *this;
  39 }
  40
  41
  42 TocIterator const TocModel::tocIterator(QModelIndex const & index) const
  43 {
  44         TocMap::const_iterator map_it = toc_map_.find(index);
  45         BOOST_ASSERT(map_it != toc_map_.end());
  46         return map_it->second;
  47 }
  48
  49
  50 QModelIndex const TocModel::modelIndex(TocIterator const & it) const
  51 {
  52         ModelMap::const_iterator map_it = model_map_.find(it);
  53         //BOOST_ASSERT(it != model_map_.end());
  54
  55         if (map_it == model_map_.end())
  56                 return QModelIndex();
  57
  58         return map_it->second;
  59 }
  60
  61
  62 void TocModel::clear()
  63 {
  64         QStandardItemModel::clear();
  65         toc_map_.clear();
  66         model_map_.clear();
  67         removeRows(0, rowCount());
  68         removeColumns(0, columnCount());
  69 }
  70
  71
  72 void TocModel::populate(Toc const & toc)
  73 {
  74         clear();
  75
  76         if (toc.empty())
  77                 return;
  78         int current_row;
  79         QModelIndex top_level_item;
  80
  81         TocIterator iter = toc.begin();
  82         TocIterator end = toc.end();
  83
  84         insertColumns(0, 1);
  85         maxdepth_ = 0;
  86         mindepth_ = INT_MAX;
  87
  88         while (iter != end) {
  89                 maxdepth_ = max(maxdepth_, iter->depth());
  90                 mindepth_ = min(mindepth_, iter->depth());
  91                 current_row = rowCount();
  92                 insertRows(current_row, 1);
  93                 top_level_item = QStandardItemModel::index(current_row, 0);
  94                 //setData(top_level_item, toqstr(iter->str()));
  95                 setData(top_level_item, toqstr(iter->str()), Qt::DisplayRole);
  96
  97                 // This looks like a gcc bug, in principle this should work:
  98                 //toc_map_[top_level_item] = iter;
  99                 // but it crashes with gcc-4.1 and 4.0.2
 100                 toc_map_.insert( TocPair(top_level_item, iter) );
 101                 model_map_[iter] = top_level_item;
 102
 103                 LYXERR(Debug::GUI, "Toc: at depth " << iter->depth()
 104                         << ", added item " << to_utf8(iter->str()));
 105
 106                 populate(iter, end, top_level_item);
 107
 108                 if (iter == end)
 109                         break;
 110
 111                 ++iter;
 112         }
 113
 114         setHeaderData(0, Qt::Horizontal, QVariant("title"), Qt::DisplayRole);
 115 //      emit headerDataChanged();
 116 }
 117
 118
 119 void TocModel::populate(TocIterator & iter, TocIterator const & end,
 120         QModelIndex const & parent)
 121 {
 122         int curdepth = iter->depth() + 1;
 123
 124         int current_row;
 125         QModelIndex child_item;
 126
 127         insertColumns(0, 1, parent);
 128         while (iter != end) {
 129
 130                 ++iter;
 131
 132                 if (iter == end)
 133                         break;
 134
 135                 if (iter->depth() < curdepth) {
 136                         --iter;
 137                         return;
 138                 }
 139
 140                 maxdepth_ = max(maxdepth_, iter->depth());
 141                 mindepth_ = min(mindepth_, iter->depth());
 142                 current_row = rowCount(parent);
 143                 insertRows(current_row, 1, parent);
 144                 child_item = QStandardItemModel::index(current_row, 0, parent);
 145                 //setData(child_item, toqstr(iter->str()));
 146                 setData(child_item, toqstr(iter->str()), Qt::DisplayRole);
 147
 148                 // This looks like a gcc bug, in principle this should work:
 149                 //toc_map_[child_item] = iter;
 150                 // but it crashes with gcc-4.1 and 4.0.2
 151                 toc_map_.insert( TocPair(child_item, iter) );
 152                 model_map_[iter] = child_item;
 153                 populate(iter, end, child_item);
 154         }
 155 }
 156
 157
 158 int TocModel::modelDepth() const
 159 {
 160         return maxdepth_ - mindepth_;
 161 }
 162
 163 } // namespace frontend
 164 } // namespace lyx
 165
 166 #include "TocModel_moc.cpp"