Aspect Examples (INotifyPropertyChanged via Aspects)

using System;
using Microsoft.Practices.Unity;
using UnityInception.ViewModels;
using Microsoft.Practices.Unity.InterceptionExtension;
using UnityInception.Models;
using UnityInception.Handlers;

namespace UnityInception
{
    /// <summary>
    /// A simple Lazy singleton for the unity container. The UnityContainer
    /// is configures for Interception within the SetUp() method 
    /// </summary>
    public class ContainerWiring
    {
        #region Data
        private static readonly Lazy<ContainerWiring> instance
            = new Lazy<ContainerWiring>(() => new ContainerWiring());

        private IUnityContainer container;
        #endregion

        #region Ctor
        private ContainerWiring()
        {
            container = new UnityContainer();
        }
        #endregion

        #region Public Methods/Properties
        public static ContainerWiring Instance
        {
            get
            {
                return instance.Value;
            }
        }

        public IUnityContainer Container
        {
            get { return container; }
        }


        public void SetUp()
        {

            //register we want Interception
            container.AddNewExtension<Interception>();

            //register types
            container.RegisterType<MainWindowViewModel>();
            container.RegisterType<DummyModel>();

            //Configure Interception

            //Configure MainWindowViewModel to have any virtual methods intercepted
            //which will end up using the INPCHandler due to the use of the INPCAttribute(s) in the
            //MainWindowViewModel type

            //Configure DummyModel to have any virtual methods intercepted using the NonAttributedINPCHandler
            //but only for property setters
            PolicyDefinition policy = container.Configure<Interception>().
                SetInterceptorFor<DummyModel>(new VirtualMethodInterceptor()).
                SetInterceptorFor<MainWindowViewModel>(new VirtualMethodInterceptor()).AddPolicy("NotifyPolicy");

            //Configure PolicyDefinition : Note as we are using an HandlerAttribute and a blanket PolicyDefinition 
            //of * we will get 2 * INPC events for MainWindowViewModel, But I am keeping this in to show you the options
            policy.AddMatchingRule(new PropertyMatchingRule("*", PropertyMatchingOption.Set));
            policy.AddCallHandler<NonAttributedINPCHandler>();
        }

        public void TearDown()
        {
            if (container != null)
            {
                container.Dispose();
            }

            container = null;
        }
        #endregion

    }
}