private void AddDependancies(DependencyListNode <TModel, TKey> node)
{
var dependancies = DependancyFunc(node.Item);
node.Dependencies.Clear();
if (dependancies == null)
{
return;
}
foreach (var dependancy in dependancies)
{
var dependantNode = Nodes
.Where(n => n.Identifier.Equals(dependancy))
.FirstOrDefault();
if (dependantNode == null)
{
throw new InvalidOperationException("The dependency {0} hasn't been found.".With(dependancy));
}
node.Dependencies.Add(dependantNode);
}
}
public void Add(TModel item)
{
var identifier = IdentifierFunc(item);
var node = new DependencyListNode <TModel, TKey>(item, identifier);
if (item is INotifyPropertyChanged)
{
((INotifyPropertyChanged)item).PropertyChanged += (s, e) => { modified = true; }
}
;
Nodes.Add(node);
modified = true;
}
private static bool Visit(DependencyListNode <TModel, TKey> node, List <DependencyListNode <TModel, TKey> > list, DependencyListNode <TModel, TKey> root)
{
if (node.Visited)
{
return(node.Root != root);
}
node.Visited = true;
node.Root = root;
foreach (var dependancy in node.Dependencies)
{
if (!Visit(dependancy, list, root) && node != root)
{
throw new InvalidOperationException("Cannot load cyclic dependency with {0}".With(dependancy.Identifier));
}
}
list.Add(node);
return(true);
}
