Method CheckDataStorage

Modules/SegmentationUI/src/QmitkSegmentationTaskListWidget.cpp:269–340

}

void QmitkSegmentationTaskListWidget::CheckDataStorage(const mitk::DataNode* removedNode)
{
  QString warning;

  if (nullptr == m_DataStorage)
  {
    warning = QStringLiteral(
      "<h3>Developer warning</h3><p>Call <code>SetDataStorage()</code> to fully initialize "
      "this instance of <code>QmitkSegmentationTaskListWidget</code>.</p>");
  }
  else
  {
    auto isTaskList = mitk::TNodePredicateDataType<mitk::SegmentationTaskList>::New();
    auto taskListNodes = GetSubset(m_DataStorage, isTaskList, removedNode);

    if (taskListNodes->empty())
    {
      warning = QStringLiteral(
        "<h3>No segmentation task list found</h3><p>Load a segmentation task list to use "
        "this plugin.</p>");
    }
    else if (taskListNodes->Size() > 1)
    {
      warning = QStringLiteral(
        "<h3>More than one segmentation task list found</h3><p>Unload everything but a "
        "single segmentation task list to use this plugin.</p>");
    }
    else
    {
      const auto* taskListNode = (*taskListNodes)[0].GetPointer();

      auto isTaskListNode = mitk::NodePredicateFunction::New([taskListNode](const mitk::DataNode* node) {
        return node == taskListNode;
      });

      auto isChildOfTaskListNode = mitk::NodePredicateFunction::New([this, isTaskListNode](const mitk::DataNode* node) {
        return !m_DataStorage->GetSources(node, isTaskListNode, false)->empty();
      });

      auto isHelperObject = mitk::NodePredicateProperty::New("helper object");
      auto isUndesiredNode = mitk::NodePredicateNot::New(mitk::NodePredicateOr::New(
        isTaskListNode,
        isChildOfTaskListNode,
        isHelperObject));

      auto unreleatedData = GetSubset(m_DataStorage, isUndesiredNode, removedNode);

      if (!unreleatedData->empty())
      {
        warning = QStringLiteral(
          "<h3>Unrelated data found</h3><p>Unload everything but a single segmentation task "
          "list to use this plugin.</p><p>Unreleated data:<ul>");

        for (auto node : *unreleatedData)
        {
          warning += "<li>" + node->GetName();

          if (auto data = node->GetData(); data != nullptr)