private void RecordNodesAndSlots(IStorage storage, List <IVisualNode> nodeList, UserAction userAction)
{
DataHeader header = new DataHeader();
long initialPostionForData, currentPositionForData = 0;
long initialPosition = storage.GetPosition();
//Retrieve all the slots Id in nodeList
List <uint> allSlotsId = new List <uint>();
foreach (IVisualNode node in nodeList)
{
if (node.GetInputSlots() != null)
{
allSlotsId.AddRange(node.GetInputSlots());
}
if (node.GetOutputSlots() != null)
{
allSlotsId.AddRange(node.GetOutputSlots());
}
}
//Record the number of slots and the slot itself
storage.WriteInteger(FieldCode.SlotCount, allSlotsId.Count());
foreach (uint slotId in allSlotsId)
{
storage.Seek(header.HeaderSize, SeekOrigin.Current);
initialPostionForData = storage.GetPosition();
ISlot slot = this.graphController.GetSlot(slotId);
slot.Serialize(storage);
currentPositionForData = storage.GetPosition();
header.DataSize = currentPositionForData - initialPostionForData;
storage.Seek(-(header.HeaderSize + header.DataSize), SeekOrigin.Current);
header.Serialize(storage);
storage.Seek(header.DataSize, SeekOrigin.Current);
}
//Record the number of nodes and the node itself
storage.WriteInteger(FieldCode.NodeCount, nodeList.Count);
foreach (IVisualNode node in nodeList)
{
storage.Seek(header.HeaderSize, SeekOrigin.Current);
initialPostionForData = storage.GetPosition();
node.Serialize(storage);
currentPositionForData = storage.GetPosition();
header.DataSize = currentPositionForData - initialPostionForData;
storage.Seek(-(header.HeaderSize + header.DataSize), SeekOrigin.Current);
header.Serialize(storage);
storage.Seek(header.DataSize, SeekOrigin.Current);
}
this.RecordFlag(storage, initialPosition, userAction);
}