public void Handle(object sender, object message, bool trace)
{
if (ReferenceEquals(_target, sender))
{
return;
}
var messageSenderCache = new MessageSenderCache(sender, message);
lock (_handledMessages)
{
if (MessageSenderCacheComparer.Instance.Equals(_lastMessage, messageSenderCache) ||
!_handledMessages.Add(messageSenderCache))
{
return;
}
_lastMessage = messageSenderCache;
}
try
{
if (_handlers == null)
{
_handler.Handle(sender, message);
if (trace)
{
Trace(sender, message, _target);
}
}
else
{
var list = FilterHandlers(message.GetType());
for (int index = 0; index < list.Length; index++)
{
list[index].Invoke(_target, new[] { sender, message });
if (trace)
{
Trace(sender, message, _target);
}
}
}
}
finally
{
lock (_handledMessages)
{
_handledMessages.Remove(messageSenderCache);
_lastMessage = default(MessageSenderCache);
}
}
}
static EventAggregator()
{
var subscriber = new ActionSubscriber <object>((o, o1) => { });
EmptyMessage = new MessageSenderCache(subscriber, subscriber, subscriber, 0);
}
