QModelIndex
QvisPluginManagerAttributesDataModel::index(int row, int column,
const QModelIndex & parent) const
{
if(!hasIndex(row, column, parent))
return QModelIndex();
TreeItem parentItem;
if(!parent.isValid())
parentItem = TreeItem(-1); // root
else
parentItem = TreeItem((int)parent.internalId());
TreeItem childItem(parentItem.child(row));
if(childItem.exists())
return createIndex(row, column, (quint32)childItem.index);
else
return QModelIndex();
}
QModelIndex
QvisPluginManagerAttributesDataModel::parent(const QModelIndex &index) const
{
if(!index.isValid())
return QModelIndex();
TreeItem childItem((int)index.internalId());
TreeItem parentItem(childItem.parent());
if(parentItem == TreeItem(-1))
return QModelIndex();
return createIndex(parentItem.row(), 0, (int)parentItem.index);
}
void TreeModel::setupModelData(const QStringList &lines, TreeItem *parent)
{
QList<TreeItem*> parents;
QList<int> indentations;
parents << parent;
indentations << 0;
int number = 0;
while (number < lines.count()) {
int position = 0;
while (position < lines[number].length()) {
if (lines[number].mid(position, 1) != " ")
break;
position++;
}
QString lineData = lines[number].mid(position).trimmed();
if (!lineData.isEmpty()) {
// Read the column data from the rest of the line.
QStringList columnStrings = lineData.split("\t", QString::SkipEmptyParts);
QList<QVariant> columnData;
for (int column = 0; column < columnStrings.count(); ++column)
columnData << columnStrings[column];
if (position > indentations.last()) {
// The last child of the current parent is now the new parent
// unless the current parent has no children.
if (parents.last()->childCount() > 0) {
parents << parents.last()->child(parents.last()->childCount()-1);
indentations << position;
}
} else {
while (position < indentations.last() && parents.count() > 0) {
parents.pop_back();
indentations.pop_back();
}
}
// Append a new item to the current parent's list of children.
parents.last()->appendChild(TreeItem(columnData, parents.last()));
}
++number;
}
}
TreeItem child(int row) const { return TreeItem(row); }
TreeItem parent() const { return TreeItem(-1); }
