Method populateTransforms

pj_plotting/widget/src/FilterEditorPanel.cpp:248–267

}

void FilterEditorPanel::populateTransforms() {
  ui_->transform_list->clear();
  auto* none_item = new QListWidgetItem(tr("-- No Transform --"), ui_->transform_list);
  none_item->setData(Qt::UserRole, QString("none"));

  for (const auto& [id, label] : session_->dataProcessorService().availableFilters()) {
    if (id == "none") {
      continue;
    }
    auto* item = new QListWidgetItem(QString::fromStdString(label), ui_->transform_list);
    item->setData(Qt::UserRole, QString::fromStdString(id));
  }

  // (The freeform "Lua Function" custom-function entry returns once it ships as a
  // Luau filter class — until then it would be an inert, empty-form selection.)

  // Default to "-- No Transform --" (row 0): a freshly-opened source shows its
  // original signal, not a filter the user didn't ask for.
  ui_->transform_list->setCurrentRow(0);
}

std::string FilterEditorPanel::currentFilterId() const {
  const QListWidgetItem* item = ui_->transform_list->currentItem();