protected override void OnElementsAdded(IEnumerable <GraphElement> elements)
{
List <GraphElement> elementsList = elements.ToList();
base.OnElementsAdded(elementsList);
if (!m_Populating)
{
INodeModel[] nodeModels = elementsList.OfType <IHasGraphElementModel>().Select(e => e.GraphElementModel).OfType <INodeModel>().ToArray();
List <Tuple <IVariableDeclarationModel, Vector2> > variablesToCreate =
DragAndDropHelper.ExtractVariablesFromDroppedElements(elementsList,
(VseGraphView)m_GraphView,
Event.current.mousePosition);
if (variablesToCreate.Any())
{
if (nodeModels.Any(e => !(e is IVariableModel)))
{
// fail because in the current setup this would mean dispatching several actions
throw new ArgumentException("Unhandled case, dropping blackboard/variables fields and nodes at the same time");
}
m_Store.Dispatch(new CreateVariableNodesAction(variablesToCreate, model));
}
else
{
Node firstStackedNode = elementsList.OfType <Node>().FirstOrDefault(n => n.IsInStack && n.Stack == null && n.model != null);
m_Store.Dispatch(new AddToGroupNodeAction(model, firstStackedNode?.layout.position ?? Vector2.negativeInfinity, nodeModels));
// We now need to remove all newly added nodes that were actually added to a stack (and thus not directly to a group).
RemoveElementsWithoutNotification(elementsList.OfType <Node>().Where(n => n.IsInStack));
}
}
}
public bool DragPerform(DragPerformEvent evt, IEnumerable <ISelectable> selection, IDropTarget dropTarget, ISelection dragSource)
{
if (GraphView == null)
{
return(false);
}
List <ISelectable> selectionList = selection.ToList();
List <GraphElement> dropElements = selectionList.OfType <GraphElement>().ToList();
Assert.IsTrue(dropElements.Count == 1);
GraphElement elementToDrop = dropElements.First();
var edgesToDelete = capacity == Capacity.Multi ? new List <IEdgeModel>() : connections.Select(c => ((Edge)c).model).ToList();
if (IsTokenToDrop(selectionList[0]))
{
Token token = ((Token)selectionList[0]);
token.NeedStoreDispatch = true;
m_Store.Dispatch(new CreateEdgeAction(Model, ((IVariableModel)token.GraphElementModel).OutputPort, edgesToDelete, CreateEdgeAction.PortAlignmentType.Input));
return(true);
}
List <Tuple <IVariableDeclarationModel, Vector2> > variablesToCreate = DragAndDropHelper.ExtractVariablesFromDroppedElements(dropElements, GraphView, evt.mousePosition);
PortType type = ((IPortModel)userData).PortType;
if (type != PortType.Data && type != PortType.Instance) // do not connect loop/exec ports to variables
{
return(GraphView.DragPerform(evt, selectionList, dropTarget, dragSource));
}
IVariableDeclarationModel varModelToCreate = variablesToCreate.Single().Item1;
m_Store.Dispatch(new CreateVariableNodesAction(varModelToCreate, evt.mousePosition, edgesToDelete, (IPortModel)userData, autoAlign: true));
GraphView.ClearPlaceholdersAfterDrag();
return(true);
}