Method data

Modules/QtWidgets/src/QmitkDataStorageSimpleTreeModel.cpp:190–232

}

QVariant QmitkDataStorageSimpleTreeModel::data(const QModelIndex &index, int role) const
{
  if (!index.isValid() || index.model() != this)
  {
    return QVariant();
  }

  auto treeItem = this->TreeItemFromIndex(index);
  if (!treeItem)
    return QVariant();

  mitk::DataNode *dataNode = treeItem->GetDataNode();

  // No need to access dataNode if that is pointing to nullptr, it will always give segfault
  if (!dataNode)
    return QModelIndex();

  QString nodeName = QString::fromStdString(dataNode->GetName());
  if (nodeName.isEmpty())
  {
    nodeName = "unnamed";
  }

  if (role == Qt::DisplayRole)
    return nodeName;
  else if (role == Qt::ToolTipRole)
    return nodeName;
  else if (role == Qt::DecorationRole)
  {
    QmitkNodeDescriptor *nodeDescriptor = QmitkNodeDescriptorManager::GetInstance()->GetDescriptor(dataNode);
    return nodeDescriptor->GetIcon(dataNode);
  }
  else if (role == QmitkDataNodeRole)
  {
    return QVariant::fromValue<mitk::DataNode::Pointer>(mitk::DataNode::Pointer(dataNode));
  }
  else if (role == QmitkDataNodeRawPointerRole)
  {
    return QVariant::fromValue<mitk::DataNode *>(dataNode);
  }

  return QVariant();
}

bool QmitkDataStorageSimpleTreeModel::setData(const QModelIndex &index, const QVariant &value, int role)
{