Method ensurePainterDatasets

app/src/DataModel/ProjectModel.cpp:4450–4482

* @brief Appends template-defined datasets to a painter group when the group has fewer than the * spec demands. Existing datasets are preserved. */

 * spec demands. Existing datasets are preserved.
 */
void DataModel::ProjectModel::ensurePainterDatasets(int groupId, const QVariantList& specs)
{
  if (groupId < 0 || static_cast<size_t>(groupId) >= m_groups.size())
    return;

  if (specs.isEmpty())
    return;

  auto& grp          = m_groups[groupId];
  const int existing = static_cast<int>(grp.datasets.size());
  bool changed       = false;

  for (int i = existing; i < specs.size(); ++i) {
    const auto map = specs.at(i).toMap();
    DataModel::Dataset ds;
    ds.groupId   = groupId;
    ds.datasetId = static_cast<int>(grp.datasets.size());
    ds.index     = nextDatasetIndex();
    ds.uniqueId  = allocateUniqueId();
    ds.title     = map.value(QStringLiteral("title"), tr("Channel %1").arg(i + 1)).toString();
    ds.units     = map.value(QStringLiteral("units")).toString();
    ds.wgtMin    = SerialStudio::toDouble(map.value(QStringLiteral("min"), 0.0));
    ds.wgtMax    = SerialStudio::toDouble(map.value(QStringLiteral("max"), 100.0));
    grp.datasets.push_back(std::move(ds));
    changed = true;
  }

  if (changed) {
    m_selectedGroup = grp;
    Q_EMIT groupsChanged();
    setModified(true);
  }
}

/**
 * @brief Toggles a dataset option flag on the currently selected dataset.