Method mapFromSource

kdevplatform/util/multilevellistview.cpp:219–251

}

QModelIndex MultiLevelListViewPrivate::mapFromSource(QModelIndex index, int level) const
{
    if (!index.isValid()) {
        return index;
    }

    Q_ASSERT(index.model() == model);

    auto* proxy = qobject_cast<QAbstractProxyModel*>(views.at(level)->model());
    Q_ASSERT(proxy);

    // find all proxies between the source and our view
    QVector<QAbstractProxyModel*> proxies;
    proxies << proxy;
    while (true) {
        auto* child = qobject_cast<QAbstractProxyModel*>(proxy->sourceModel());
        if (child) {
            proxy = child;
            proxies << proxy;
        } else {
            Q_ASSERT(proxy->sourceModel() == model);
            break;
        }
    }
    // iterate in reverse order to find the view's index
    for (int i = proxies.size() - 1; i >= 0; --i) {
        proxy = proxies.at(i);
        index = proxy->mapFromSource(index);
        Q_ASSERT(index.isValid());
    }

    return index;
}

MultiLevelListView::MultiLevelListView(QWidget* parent, Qt::WindowFlags f)
    : QWidget(parent, f)