Method parent

qrenderdoc/Code/QRDUtils.cpp:3784–3863

}

QModelIndex StructuredDataItemModel::parent(const QModelIndex &index) const
{
  if(index.internalPointer() == NULL)
    return QModelIndex();

  Index decodedIndex = decodeIndex(index);

  SDObject *obj = NULL;

  // array members have parents that are page nodes
  if(decodedIndex.tag == ArrayMember)
  {
    int pageRow = decodedIndex.indexInArray / ArrayPageSize;
    return createIndex(decodedIndex.indexInArray / ArrayPageSize, 0,
                       encodeIndex({PageNode, decodedIndex.obj, pageRow * ArrayPageSize}));
  }
  else if(decodedIndex.tag == PageNode)
  {
    obj = decodedIndex.obj;
  }
  else
  {
    obj = decodedIndex.obj->GetParent();
  }

  // need to figure out the index for obj, it could be an array member itself in theory, or it might
  // be direct, or it could be a root object
  if(obj)
  {
    SDObject *parent = obj->GetParent();

    if(parent == NULL)
    {
      int row = m_Objects.indexOf(obj);
      if(row >= 0)
        return createIndex(row, 0, obj);

      qCritical() << "Encountered object with no parent that is not a root";

      return QModelIndex();
    }

    // if the parent is a large array
    if(isLargeArray(parent))
    {
      // we expect to have set up our member index before this lookup was ever needed
      auto it = m_ArrayMembers.find(obj);
      if(it == m_ArrayMembers.end())
      {
        qCritical() << "Expected member index to be set up, but it is not";

        return QModelIndex();
      }

      // return the index for this item, with the child index we looked up
      return createIndex(it.value(), 0, encodeIndex({ArrayMember, parent, it.value()}));
    }