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