C++ (Cpp) ModelTreeItem::child Examples

Example #1

File: StationTreeModel.cpp Project: MichaelRink/ogs_ufz

/**
 * Returns the model index of an item in the tree.
 * \param row The row where the item is located
 * \param column The column where the item is located
 * \param parent The parent of the item
 * \return The model index of the item
 */
QModelIndex StationTreeModel::index( int row, int column,
                                     const QModelIndex &parent /*= QModelIndex()*/ ) const
{
	if (!hasIndex(row, column, parent))
		return QModelIndex();

	ModelTreeItem* parentItem;

	if (!parent.isValid())
		parentItem = (ModelTreeItem*)(_rootItem);
	else
		parentItem = static_cast<ModelTreeItem*>(parent.internalPointer());

	ModelTreeItem* childItem = (ModelTreeItem*)(parentItem->child(row));
	if (childItem)
	{
		QModelIndex newIndex = createIndex(row, column, childItem);
		// assign ModelIndex to BaseItem so it can communicate with the model
		BaseItem* item = childItem->getItem();
		if ( item != nullptr )
			item->setModelIndex(newIndex);
		return newIndex;
	}
	else
		return QModelIndex();
}