SortProxyModel doesn't forward dataChanged signals #12
Description
source data changes, in particular for roles other than the sort role, are not forwarded (SortProxyModel::handleDataChanged), thus having a SortProxyModel in the stack makes you "lose" updates.
In a customer project using SPM, I just implemented it using linear search to do the mapping:
int minRow = std::numeric_limits<int>::max();
int maxRow = -1;
for (int sourceRow = topLeft.row(); sourceRow <= bottomRight.row(); ++sourceRow) {
auto it = std::find(m_rowMap.cbegin(), m_rowMap.cend(), sourceRow);
Q_ASSERT(it != m_rowMap.cend());
const auto proxyRow = static_cast<int>(std::distance(m_rowMap.cbegin(), it));
minRow = std::min(minRow, proxyRow);
maxRow = std::max(maxRow, proxyRow);
}
Q_ASSERT(minRow <= maxRow);
emit dataChanged(index(minRow, 0), index(maxRow, 0), roles);
That does the job for my use case, but generic solution probably should use something more efficient.