public static Game Game(this IDataObjectChild obj)
{
var game = obj.TryGame();
if (game == null)
{
throw new InvalidOperationException("Data object is not part of the object tree");
}
return(game);
}
public static Game TryGame(this IDataObjectChild obj)
{
if (obj is IRootDataObject root)
{
return(root.Game);
}
root = obj.Ancestor <IRootDataObject>();
return(root?.Game);
}
public static T Ancestor <T>(this IDataObjectChild child)
where T : class
{
for (var obj = child.Parent; obj != null; obj = obj.Parent)
{
if (obj is T x)
{
return(x);
}
}
return(null);
}
public static bool IsInCollection(this IDataObjectChild obj) => obj.Parent is ICollection;
