Extending Castle DynamicProxy

using System;
using System.Threading;
using System.Windows.Threading;
using Castle.Core.Interceptor;

namespace Castle.Facilities.PresentationModelIntegration
{
    public class DispatchInterceptor : IInterceptor
    {       
        Dispatcher _dispatcher = Dispatcher.CurrentDispatcher;
        #region IInterceptor Members

        public void Intercept(IInvocation invocation)
        {
            if (!CheckIfShouldDispatch(invocation))
            { invocation.Proceed(); return; }

            if (Thread.CurrentThread == _dispatcher.Thread)
                invocation.Proceed();
            else
            {
                ThreadStart ts = () => invocation.Proceed();
                _dispatcher.Invoke(ts, null);
            }
        }

        #endregion

        bool CheckIfShouldDispatch(IInvocation invocation)
        {
            if (invocation.Method.Name == "OnPropertyChanged")
                return true;
            if (invocation.Method.Name == "OnCollectionChanged")
                return true;
            return false;
        }
    }
}