private static IEnumerable<DiagramSymbolViewModel> AddArrows(IEnumerable<DiagramSymbolViewModel> layers,OrientationKind parentOrientation ,bool dependencyDown)
{
var viewModels = layers.ToList();
if (!viewModels.OfType<LayerViewModel>().Any(x => x.Children.OfType<LayerViewModel>().Any(y => y.Children.Any())))
return viewModels;
var arrowdirection = dependencyDown ?
ArrowViewModel.Direction.Down : ArrowViewModel.Direction.Up;
foreach (var layer in viewModels.Cast<LayerViewModel>())
layer.Children = AddArrows(layer.Children,layer.Orientation,dependencyDown);
if (viewModels.Count <= 1 || parentOrientation == Horizontal)
return viewModels;
for (var i = 1; i < viewModels.Count; i += 2)
{
viewModels.Insert(i,new ArrowViewModel(arrowdirection));
}
return viewModels;
}
public SiblingHolderNode(IEnumerable<Node> siblingNodes, OrientationKind orientation) : base("")
{
SetChildren(siblingNodes);
Orientation = orientation;
}
