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