public IDiagramModel CreateCopy(string containerId = null)
{
IContainerBase source = null;
if (String.IsNullOrEmpty(containerId))
{
source = this;
}
else if (_nodes.Contains(containerId))
{
source = GetNode <IContainerNode>(containerId);
}
// cannot create copy for other
if (source == null)
{
return(null);
}
var diagramModel = new DiagramModel {
DiagramOptions = DiagramOptions
};
var goCollection = new GoCollection {
source as GoNode
};
var copy = diagramModel.CopyFromCollection(goCollection);
// _nodes is empty - overridden Add method seems not to be used in CopyFromCollection
foreach (var node in diagramModel.GetAllChildren <IBaseNode>())
{
diagramModel.AddNodeId(node);
}
return(diagramModel);
}