filtering a TreeView from buttom to top

[soul_rebel]

Hmmm this is driving me nuts.... here are my attempts at "prefiltering"

I have a member
QMap <qint64, bool> visibleTable;
that saves internalPointer<->visiblity;

This is the extra function

bool QBrowseViewFilterModel::myFilterAcceptsRow(int sourceRow,
                            const QModelIndex &sourceParent)
{
 
    QModelIndex index0 = sourceModel()->index(sourceRow, 0, sourceParent);
    bool show = false;
 
    if (sourceModel()->hasChildren(index0))
    {
        for (int i = 0; i <  sourceModel()->rowCount(index0); ++i)
            if (myFilterAcceptsRow(i, index0))
                show = true; /// if any child is visible keep this visible
    } else
    {
        QModelIndex index1 = sourceModel()->index(sourceRow, 1, sourceParent);
        QModelIndex index2 = sourceModel()->index(sourceRow, 2, sourceParent);
 
        show = true;
 
      if (!sourceModel()->data(index0).toString().contains(filterRegExp()))
            show = false;
 
    }
 
    visibleTable.insert(index0.internalId(), show);
 
    return show;
}

bool QBrowseViewFilterModel::myFilterAcceptsRow(int sourceRow,
                            const QModelIndex &sourceParent)
{

    QModelIndex index0 = sourceModel()->index(sourceRow, 0, sourceParent);
    bool show = false;

    if (sourceModel()->hasChildren(index0))
    {
        for (int i = 0; i <  sourceModel()->rowCount(index0); ++i)
            if (myFilterAcceptsRow(i, index0))
                show = true; /// if any child is visible keep this visible
    } else
    {
        QModelIndex index1 = sourceModel()->index(sourceRow, 1, sourceParent);
        QModelIndex index2 = sourceModel()->index(sourceRow, 2, sourceParent);

        show = true;
    
      if (!sourceModel()->data(index0).toString().contains(filterRegExp()))
            show = false;

    }

    visibleTable.insert(index0.internalId(), show);

    return show;
}

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the original filterAcceptsRow :

bool QBrowseViewFilterModel::filterAcceptsRow(int sourceRow,
                                    const QModelIndex &sourceParent) const
{
    QModelIndex index0 = sourceModel()->index(sourceRow, 0, sourceParent);
    return visibleTable[index0.internalId()];
}

bool QBrowseViewFilterModel::filterAcceptsRow(int sourceRow,
                                    const QModelIndex &sourceParent) const
{
    QModelIndex index0 = sourceModel()->index(sourceRow, 0, sourceParent);
    return visibleTable[index0.internalId()];
}

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And I also overwrote invalidate and reset to actually start the recursion on the top-level-items:

void    QBrowseViewFilterModel::reset()
{
    visibleTable.clear();
 
    for (int i = 0; i <  sourceModel()->rowCount(); ++i)
        myFilterAcceptsRow(i);
 
    this->QSortFilterProxyModel::reset();
}
 
void    QBrowseViewFilterModel::invalidate()
{
    visibleTable.clear();
 
    for (int i = 0; i <  sourceModel()->rowCount(); ++i)
        myFilterAcceptsRow(i);
 
    this->QSortFilterProxyModel::invalidate();
}

void    QBrowseViewFilterModel::reset()
{
    visibleTable.clear();

    for (int i = 0; i <  sourceModel()->rowCount(); ++i)
        myFilterAcceptsRow(i);

    this->QSortFilterProxyModel::reset();
}

void    QBrowseViewFilterModel::invalidate()
{
    visibleTable.clear();

    for (int i = 0; i <  sourceModel()->rowCount(); ++i)
        myFilterAcceptsRow(i);

    this->QSortFilterProxyModel::invalidate();
}

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But now the table¹ is empty

... I hope I am not doing anything stupid there right now.... it is getting kind of late....

Thanks for not giving up

edit: ¹ I meant the view.