Method refreshColorArrayNames

Qt/Components/pqDisplayColorWidget.cxx:508–573

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//-----------------------------------------------------------------------------
void pqDisplayColorWidget::refreshColorArrayNames()
{
  // Simply update the this->Variables combo-box with values from the domain.
  // Try to preserve the current text if possible.
  const QVariant current =
    pqDisplayColorWidget::PropertyLinksConnection::convert(this->arraySelection());

  const bool prev = this->Variables->blockSignals(true);

  this->Variables->clear();
  this->Internals->OutOfDomainEntryIndex = -1;

  // add solid color, but disable for some representations.
  this->Variables->addItem(*this->SolidColorIcon, tr("Solid Color"), QVariant());
  if (this->Representation && this->Internals->NoSolidColor.contains(this->representationText()))
  {
    const auto model = qobject_cast<QStandardItemModel*>(this->Variables->model());
    QStandardItem* item = model->item(0);
    item->setFlags(item->flags() & ~Qt::ItemIsEnabled);
  }

  vtkSMArrayListDomain* domain = this->Internals->Domain;
  assert(domain);
  for (unsigned int cc = 0, max = domain->GetNumberOfStrings(); cc < max; cc++)
  {
    const int icon_association = domain->GetDomainAssociation(cc);
    const int association = domain->GetFieldAssociation(cc);
    const QString name = domain->GetString(cc);
    const QString label = !domain->IsArrayPartial(cc) ? name : QString("%1 (partial)").arg(name);
    const QIcon* icon = this->itemIcon(icon_association, name);
    const QVariant idata = this->itemData(association, name);
    const QString key = QString("%1.%2").arg(association).arg(name);
    this->Variables->addItem(*icon, label, idata);
  }
  // doing this here, instead of in the constructor ensures that the
  // popup menu shows reasonably on OsX.
  this->Variables->setMaxVisibleItems(this->Variables->count() + 1);

  const int idx = this->Variables->findData(current);
  if (idx > 0)
  {
    this->Variables->setCurrentIndex(idx);
  }
  else if (current.isValid())
  {
    // The previous value set on the widget is no longer available in the
    // "domain". This happens when the pipeline is modified, for example. In
    // that case, the UI still needs to reflect the value. So we add it.
    const QPair<int, QString> currentColoring =
      pqDisplayColorWidget::PropertyLinksConnection::convert(current);
    this->Variables->setCurrentIndex(
      this->addOutOfDomainEntry(currentColoring.first, currentColoring.second));
  }
  this->Variables->blockSignals(prev);
  this->Variables->setEnabled(this->Variables->count() > 0);

  // since a change in domain could mean a change in components too,
  // we should refresh those as well.