public static IEnumerable <CallbackDescriptor> GetEventHandlerListEvents(this object value)
{
Func <PropertyInfo, bool> selector = pi => string.Compare(pi.Name, "Events", false) == 0;
var listInfo = value.NonPublicInstanceProperties(selector).SingleOrDefault();
if (listInfo == null)
{
return(Enumerable.Empty <CallbackDescriptor>());
}
var events = from fi in value.NonPublicStaticFields(true)
let list = listInfo.GetValue <EventHandlerList>(value, null)
from handlerEntry in list.AsEnumerable()
where handlerEntry.Key == fi.GetValue(value) &&
handlerEntry.Handler != null
select new
{
fi.Name,
handlerEntry.Handler
};
return(events.Select(e =>
{
var callbackDescriptor = new CallbackDescriptor(e.Name);
callbackDescriptor.AddMethods(e.Handler.GetInvocationList().Select(del => del.Method));
return callbackDescriptor;
}).ToArray());
}
public static IEnumerable <CallbackDescriptor> GetPocoEventsForTypes(object value, params Type[] types)
{
return(value.GetInstanceFields()
.Where(fi => types.Any(t => t.IsAssignableFrom(fi.FieldType)) && fi.GetValue <Delegate>(value) != null)
.Select(e =>
{
var callbackDescriptor = new CallbackDescriptor(e.Name);
var eventDelegate = e.GetValue <Delegate>(value);
callbackDescriptor.AddMethods(eventDelegate.GetInvocationList().Select(del => del.Method));
return callbackDescriptor;
}).ToArray());
}