Transport Class and Events

[harleydude]

Hopefully this makes sense.

I am trying to send an event from my transport class to the provider class using self:Event(self.Events.AnEvent), the event is never seen. If I send the same from my component class, then my provider class sees the event.

How do I do the same from my transport class?

[Rob H]

I think the first parameter should probably be self.Events.Update for it to be passed up the chain. It all depends what's subscribed to the transport.

How is your transport class created?

[harleydude]

In the component file I have the following

Enable = function (self)
    print ("ElkM1EZ8:Enable()")
    local b = Super.Enable (self)

    --table.print (self.Settings)
    if self.Settings.Communications.Type then
        self.ElkM1EZ8 = Classes.ElkM1EZ8Class:New (table.copy(self.Settings))
    end

    return b
end,

[Rob H]

Is anything actually calling your Subscribe method?

[harleydude]

My transport class is based on the MediaBridge class, it does not contain an Event, Subscribe or Unsubscribe methods. I am sure there is something missing in the chain just not sure what.

[harleydude]

Here is a sample which illustrates the behaviour.

[Rob H]

The MediaBridge component is based on Components.Classes.InstancesContainer which handles subscribing to the instances' publishers. Your component is based on Components.Classes.Provider which doesn't call Subscribe. So the events are going nowhere as far as I can tell.

Not sure at the moment what the solution is - I'm taking ibuprofen for muscle pain and it always makes my brain a bit fuzzy.

[harleydude]

Not sure how/if this matters, but if I do a self:Event(self.Events.AnEvent) from the component file, the provider file sees the event, it just does not see it if it comes from the transport class file.

Do I need to add the subscribe, unsubscribe and event methods to my component file?

[Rob H]

The base component already has those methods, but you'll probably want to add some code to your enable function to subscribe to the transport's publisher - something like :-

if self.ElkM1EZ8 then
    self.ElkM1EZ8:Subscribe(function(self, ...) self:Event(unpack(arg)) end)
end

[harleydude]

Added this and it appears to work.

if self.ElkM1EZ8 then
    self.ElkM1EZ8:Subscribe(function(...) self:Event(unpack(arg)) end)
end

Thanks Rob.