Method refresh

gui/qt/vartablemodel.cpp:105–166

}

void VarTableModel::refresh() {
    calc_var_t var;

    std::vector<calc_var_t> newVars;

    vat_search_init(&var);
    while (vat_search_next(&var)) {
        if (var.named || var.size > 2) {
            newVars.push_back(var);
        }
    }

    std::sort(newVars.begin(), newVars.end(), varLess);

    auto oldIter = vars.begin();
    auto newIter = newVars.begin();
    while (newIter != newVars.end()) {
        size_t row = oldIter - vars.begin();
        // Remove old vars smaller than the next new var
        auto oldRemoveEnd = std::find_if_not(oldIter, vars.end(), [=](const VarData &var) { return varLess(var.info, *newIter); });
        if (oldIter != oldRemoveEnd) {
            beginRemoveRows(QModelIndex(), row, row + (oldRemoveEnd - oldIter - 1));
            oldIter = vars.erase(oldIter, oldRemoveEnd);
            endRemoveRows();
        }
        // Insert new vars smaller than the next old var, or insert all if no more old vars
        auto newInsertEnd = newVars.end(); 
        if (oldIter != vars.end()) {
            newInsertEnd = std::find_if_not(newIter, newVars.end(), [=](const calc_var_t &var) { return varLess(var, oldIter->info); });
        }
        if (newIter != newInsertEnd) {
            int lastRow = row + (newInsertEnd - newIter - 1);
            beginInsertRows(QModelIndex(), row, lastRow);
            oldIter = vars.insert(oldIter, newIter, newInsertEnd);
            endInsertRows();
            // Handle header resize because it doesn't care about inserted rows
            emit dataChanged(index(row, 0), index(lastRow, VAR_NUM_COLS - 1), { Qt::SizeHintRole });
            oldIter += (newInsertEnd - newIter);
            newIter = newInsertEnd;
        } else {
            // No new vars were smaller, and the old var cannot be smaller because those were already removed, so they're equal
            assert(oldIter != vars.end());
            // Update the old variable with the new variable data
            uint8_t changed = oldIter->updateInfo(*newIter);
            // Inform the view of changed columns
            for (uint8_t col = 0; col < VAR_NUM_COLS; col++) {
                if (changed & (1 << col)) {
                    QModelIndex cell = index(row, col);
                    emit dataChanged(cell, cell);
                }
            }
            oldIter++;
            newIter++;
        }
    }
    // Remove any remaining old vars
    if (oldIter != vars.end()) {
        beginRemoveRows(QModelIndex(), oldIter - vars.begin(), vars.size() - 1);