QModelIndex Model::parent( const QModelIndex & child ) const {
/*
parent()
Provides a model index corresponding to the parent of any given child item.
If the model index specified corresponds to a top-level item in the model,
or if there is no valid parent item in the model, the function must return
an invalid model index, created with the empty QModelIndex() constructor.
*/
// fall 1: parentitem fuer invalid
// qDebug() << "parent ";
// << QString("%1").arg((unsigned int) child);
if ( !child.isValid() ) {
return QModelIndex();
}
// qDebug() << "parent2or3";
AbstractTreeItem *childItem =
static_cast<AbstractTreeItem*>( child.internalPointer() );
AbstractTreeItem *parentItem = childItem->parent();
// fall 2: parentitem fuer rootItem
// if ( parentItem == NULL )
// return QModelIndex();
if ( parentItem == rootItem )
return QModelIndex();
// fall 3: parentitem fuer alle anderen
// return index(r,c,parent model index);
return createIndex( parentItem->row(), 0, parentItem );
}
void AbstractTreeItem::dumpChildList() {
qDebug() << "==== Childlist for Item:" << this << "====";
if(childCount() > 0) {
AbstractTreeItem *child;
QList<AbstractTreeItem *>::const_iterator childIter = _childItems.constBegin();
while(childIter != _childItems.constEnd()) {
child = *childIter;
qDebug() << "Row:" << child->row() << child << child->data(0, Qt::DisplayRole);
childIter++;
}
}
qDebug() << "==== End Of Childlist ====";
}
