private void CreateNativeObject()
{
var node = DomNode;
if (DomNode == null || m_instanceId != 0)
{
return;
}
var doc = node.GetRoot().As <NativeDocumentAdapter>();
if (doc != null && doc.ManageNativeObjectLifeTime)
{
// The object might have a pre-assigned instance id.
// If so, we should attempt to use that same id.
// This is important if we want the id to persist between sessions
// -- For example, we must reference placement objects through
// a GUID value that remains constant. We don't want to create
// new temporary ids for placements every time we create them,
// when the GUID value is more reliable
ulong existingId = 0;
var idField = DomNode.Type.GetAttributeInfo("ID");
if (idField != null)
{
var id = DomNode.GetAttribute(idField);
if (id is UInt64)
{
existingId = (UInt64)id;
}
else
{
string stringId = id as string;
if (stringId != null && stringId.Length > 0)
{
if (!UInt64.TryParse(stringId, out existingId))
{
existingId = GUILayer.Utils.HashID(stringId);
}
}
}
}
using (var transfer = new NativePropertyTransfer())
{
using (var stream = transfer.CreateStream())
{
foreach (AttributeInfo attribInfo in this.DomNode.Type.Attributes)
{
UpdateNativeProperty(DomNode, attribInfo, transfer.Properties, stream);
}
UpdateSecondaryNativeProperties(transfer.Properties, stream);
m_instanceId = GameEngine.CreateObject(doc.NativeDocumentId, existingId, TypeId, transfer.Properties);
}
}
if (m_instanceId != 0)
{
m_documentId = doc.NativeDocumentId;
GameEngine.RegisterGob(m_documentId, m_instanceId, this);
}
}
}