ObjectDef example

gistfile1.cs

  public class NavigationVisitor : IBehaviorVisitor
    {
        private readonly IConfigurationObserver _observer;
        private readonly ListDependency _policies = new ListDependency(typeof(IEnumerable<IMenuPolicy>));

        public NavigationVisitor(IConfigurationObserver observer)
        {
            _observer = observer;
        }

        public void VisitBehavior(BehaviorChain chain)
        {
            if(chain.FirstCall().Method.HasAttribute<NavigationAttribute>() && chain.HasInput())
            {
                ActionCall actionCall = chain.FirstCall();
                var attr = actionCall.Method.GetAllAttributes<NavigationAttribute>();
               
                foreach (var navigationAttribute in attr)
                {
                    _observer.RecordCallStatus(actionCall, "NavigationVisitor: Matched on has navigation attribute filter");

                    Type ruleType = typeof(ContextualMenuRule<>).MakeGenericType(
                        chain.InputType());
                    var depDef = _policies.AddType(typeof(MenuPolicy<>).MakeGenericType(chain.InputType()));

                    var ruleDef = new ObjectDef(ruleType);
                    ruleDef.Child(typeof(ActionCall), actionCall);
                    ruleDef.Child(typeof(NavigationAttribute), navigationAttribute);

                    depDef.Dependencies.Add(new ConfiguredDependency()
                    {
                        DependencyType = typeof(IMenuRule<>).MakeGenericType(chain.InputType()),
                        Definition = ruleDef
                    });
                }
                
            }
        }

        public IEnumerable<ObjectDef> AllMenus
        {
            get
            {
                return _policies.Items;
            }
        }

        public void Register(Action<Type, ObjectDef> register)
        {
            var cacheDef = new ObjectDef(typeof (MenuRegistry));

            cacheDef.Dependencies.Add(_policies);

            register(typeof (IMenuRegistry), cacheDef);
        }
    }