Authors CurseForge

local triggerObjectCreated = Utility.Event.Create("LibDataBroker", "ObjectCreated")

-- In NewDataObject:
-- self.callbacks:Fire("LibDataBroker_DataObjectCreated", name, dataobj)
triggerObjectCreated(name, dataobj)

lib.FireAttributeChanged = lib.FireAttributeChanged or Utility.Event.Create("LibDataBroker", "AttributeChanged")

lib.domt.__newindex = function(self, key, value)
  -- ...
  lib.FireAttributeChanged(name, key, value, self) -- dot, not colon
  -- ...
end

Quote from myrroddin

Further, but it is still the conversion thing that's bothering me. The signature/syntax of Utility.Event.Create has two return values, but it appears I am only using one. There is both a handle and an eventTable; using the method suggested, does this return the eventTable?

Quote from myrroddin

Inefficient how? Is it because of how Rift registers events as tables?

-- Create a new event ("MyAddon" is used for debugging, "SubCategory.MyEvent" is the actual event name and should be unique across all the event system) :
local eventFireHandler, eventTable = Utility.Event.Create("MyAddon", "Event.SubCategory.MyEvent")

-- Register an event handler:
local function myhandler(param1, param2, param3)
  -- ...
end
-- "MyAddon" and "MyHandlerLabel" are just used for debugging
tinsert(Event.SubCategory.MyEvent, { myHandler, "MyAddon", "MyHandlerLabel" })

-- Fire an event
eventFireHandle(param1, param2, param3)

Quote from Adirelle

RiftUI events in a nutshell (according to the wiki):
...
The system is made so that all events should declared beforehands. You cannot use an arbitrary event name and you cannot register events that have not been created ; two things you can do with CBH. This requires that the load order should be honored as for variables and functions : if addon B would use an event fired by addon A, addon B should wait for addon A to load before registering its handler.

local CBH = LibStub("CallbackHandler-1.0")
local eventFrame = {}
eventFrame.cbh = CBH:New(eventFrame, "RegisterEvent", "UnregisterEvent", nil)
local findTable = function(...)
	local t
	for i = 1, select("#", ...) do
		local e = select(i, ...)
		if i = 1 then t = _G[e] else t = t[e] end
		if not t then return error("Bad Event Name "..string.join(".", ...) ) end
	end
	return t
end
	--Due to the way the callback works, the event has to be registered with "_" notation, so our OnUsed
	--function handles the translation to "." doted notation and back
function eventFrame.OnUsed(registry, addon, event)
	local eventTable = findTable(event:gsub("_", "%.") )
	tinsert(eventTable, { function(...) eventFrame.cbh:Fire(event, ...) end, "MyAddon", "SomeLabel")
end

eventFrame:RegisterEvent("Some.Event")

function eventFrame:Some_Event(event, ...)
end