6 QModelIndex TreeModel::ixCur=QModelIndex();
7 TreeItem* TreeModel::itStartParent=NULL;
9 TreeModel::TreeModel(QObject *parent)
10 : QAbstractItemModel(parent)
12 QList<QVariant> rootData;
13 rootData << "Heading" << "Type" <<"Note";
14 rootItem = new TreeItem(rootData);
17 TreeModel::~TreeModel()
22 int TreeModel::columnCount(const QModelIndex &parent) const
25 return static_cast<TreeItem*>(parent.internalPointer())->columnCount();
27 return rootItem->columnCount();
30 QVariant TreeModel::data(const QModelIndex &index, int role) const
35 if (role != Qt::DisplayRole)
38 TreeItem *item = static_cast<TreeItem*>(index.internalPointer());
40 return item->data(index.column());
43 Qt::ItemFlags TreeModel::flags(const QModelIndex &index) const
46 return Qt::ItemIsEnabled;
48 return Qt::ItemIsEnabled | Qt::ItemIsSelectable;
51 QVariant TreeModel::headerData(int section, Qt::Orientation orientation,
54 if (orientation == Qt::Horizontal && role == Qt::DisplayRole)
55 return rootItem->data(section);
60 QModelIndex TreeModel::index(int row, int column, const QModelIndex &parent)
65 if (!parent.isValid())
66 parentItem = rootItem;
68 parentItem = static_cast<TreeItem*>(parent.internalPointer());
70 TreeItem *childItem = parentItem->child(row);
72 return createIndex(row, column, childItem);
77 QModelIndex TreeModel::parent(const QModelIndex &index) const
82 TreeItem *childItem = static_cast<TreeItem*>(index.internalPointer());
83 TreeItem *parentItem = childItem->parent();
85 if (parentItem == rootItem)
88 return createIndex(parentItem->row(), 0, parentItem);
91 int TreeModel::rowCount(const QModelIndex &parent) const
95 if (!parent.isValid())
96 parentItem = rootItem;
98 parentItem = static_cast<TreeItem*>(parent.internalPointer());
100 return parentItem->childCount();
103 TreeItem* TreeModel::first()
105 if (rootItem->childCount() ==0)
111 return static_cast<TreeItem*>(ixCur.internalPointer());
114 TreeItem* TreeModel::next()
116 if (!ixCur.isValid() )
119 ixCur=index (ixCur.row()+1,0);
121 return static_cast<TreeItem*>(ixCur.internalPointer());
127 bool TreeModel::removeRows ( int row, int count, const QModelIndex & parent)
129 int last=row+count-1;
130 beginRemoveRows (parent,row,last);
132 TreeItem *pi= static_cast<TreeItem*>(parent.internalPointer());
133 for (int i=row; i<=last; i++)
135 std::cout << "TreeModel::removeRows removing i="<<i<<std::endl;
136 pi->removeChild (row);
143 QModelIndex TreeModel::index (TreeItem* ti)
145 return createIndex (ti->row(),ti->column(),ti);