Method onTreeContextMenu

pj_app/src/ui/CurveListPanel.cpp:436–524

}

void CurveListPanel::onTreeContextMenu(const QPoint& pos) {
  if (catalog_ == nullptr) {
    return;
  }
  // The menu is offered only on a dataset node (top-level group with topic children).
  const auto is_dataset_node = [](QTreeWidgetItem* node) {
    return node != nullptr && node->parent() == nullptr && node->childCount() > 0;
  };
  QTreeWidgetItem* clicked = tree_view_->itemAt(pos);
  if (!is_dataset_node(clicked)) {
    return;  // topic/curve nodes get no menu
  }

  QHash<QString, DatasetId> id_by_name;
  for (const auto& [id, name] : catalog_->datasets()) {
    id_by_name.insert(name, id);
  }
  QList<DatasetId> dataset_ids;
  const auto add_dataset = [&](QTreeWidgetItem* node) {
    if (!is_dataset_node(node)) {
      return;
    }
    const auto found = id_by_name.constFind(node->text(0));
    if (found != id_by_name.constEnd() && !dataset_ids.contains(found.value())) {
      dataset_ids.push_back(found.value());
    }
  };
  // Always include the right-clicked dataset; if it is part of a multi-selection,
  // include every other selected dataset too. Right-clicking a dataset outside the
  // selection targets just that one (standard list behavior). Does not rely on the
  // clicked row being selected, so the menu works even on a fresh right-click.
  add_dataset(clicked);
  if (clicked->isSelected()) {
    for (QTreeWidgetItem* item : tree_view_->selectedItems()) {
      add_dataset(item);
    }
  }
  if (dataset_ids.isEmpty()) {
    return;  // clicked name no longer resolves to a catalog dataset
  }

  // Build the menu from flat QPushButtons wrapped in QWidgetActions — the same
  // pattern as the "Remove all Datasets" item in the datasets popup — so each item
  // carries a themed leading icon and the destructive ones paint in the shared
  // ${purple} via the central `QMenu#PJMenu QPushButton[destructive="true"]` rule.
  QMenu menu(this);
  menu.setObjectName(QStringLiteral("PJMenu"));
  const QString theme = currentTheme();
  const auto add_item = [&](const QString& icon, const QString& text, bool destructive, bool enabled) {
    auto* button = new QPushButton(loadSvg(icon, theme), text, &menu);
    button->setFlat(true);
    button->setEnabled(enabled);
    if (destructive) {
      button->setProperty("destructive", true);
    }
    auto* action = new QWidgetAction(&menu);
    action->setDefaultWidget(button);
    menu.addAction(action);