Function execFieldDialog

pj_app/src/ui/Scene3DConfigPanel.cpp:108–117

Small modal prompt on the shared Dialog chrome: a single field + OK/Cancel. The field is parented into the dialog; values must be read before `dialog` leaves scope, which is why each picker below returns the value, not a bool.

// The field is parented into the dialog; values must be read before `dialog`
// leaves scope, which is why each picker below returns the value, not a bool.
bool execFieldDialog(Dialog& dialog, const QString& title, QWidget* field) {
  dialog.setDialogTitle(title);
  auto* layout = new QVBoxLayout(dialog.contentWidget());
  layout->addWidget(field);
  auto* buttons = new QDialogButtonBox(QDialogButtonBox::Ok | QDialogButtonBox::Cancel, dialog.contentWidget());
  layout->addWidget(buttons);
  QObject::connect(buttons, &QDialogButtonBox::accepted, &dialog, &QDialog::accept);
  QObject::connect(buttons, &QDialogButtonBox::rejected, &dialog, &QDialog::reject);
  return dialog.exec() == QDialog::Accepted;
}

// Topic mode: pick one of the dataset's robot_description topics.
std::optional<std::pair<ObjectTopicId, QString>> pickRobotDescriptionTopic(