Method parent

src/model/DeviceModel.cpp:166–176

}

QModelIndex DeviceModel::parent(const QModelIndex &child) const {
    if (!child.isValid())
        return {};
    Node *c = nodeFor(child);
    Node *p = c->parent;
    if (!p || p == m_root)
        return {};
    Node *gp = p->parent;
    int row = gp ? gp->children.indexOf(p) : 0;
    return createIndex(row, 0, p);
}

int DeviceModel::rowCount(const QModelIndex &parent) const {
    return nodeFor(parent)->children.size();