ESOUI - EVENT_MANAGER:RegisterForUpdate

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- General Authoring Discussion (https://www.esoui.com/forums/forumdisplay.php?f=174)

- - EVENT_MANAGER:RegisterForUpdate (https://www.esoui.com/forums/showthread.php?t=4222)

EVENT_MANAGER:RegisterForUpdate

Questions about the Event Manager:

Does it matter if you re-register something for update (to change it), without unregistering the old one first?

Lua Code:

-- Register something for update
EVENT_MANAGER:RegisterForUpdate("Something", ...)
 
-- Re-register it to change it, without unregistering the old one
EVENT_MANAGER:RegisterForUpdate("Something", ...)

Does it really matter if you try to UnregisterForUpdate if it isn't registered?

Lua Code:

-- unregister it (maybe this is done in normal code somewhere & we know its registered
EVENT_MANAGER:UnregisterForUpdate("Something")
 
-- But maybe in the settings menu we don't know if its registered, so unregister it just in case
EVENT_MANAGER:UnregisterForUpdate("Something")

Is there some way to check to see if something is registered with the event manager?
Besides creating a variable myself to track whether or not you have "Something" registered for update?

Doh, I didn't even think about checking it myself like this:

Lua Code:

EVENT_MANAGER:RegisterForUpdate("RegisterTest", 3000, function() d("RegisterTest 1") end)
EVENT_MANAGER:RegisterForUpdate("RegisterTest", 3000, function() d("RegisterTest 2") end)

Only outputs: RegisterTest 1
So I guess you can't reregister it to update it. You have to unregister it & then reregister it.

Which also lead me to figuring out it returns true, false if it gets registered or not:

Lua Code:

local bRegistered1 = EVENT_MANAGER:RegisterForUpdate("RegisterTest", 3000, function() d("RegisterTest 1") end)
d(tostring(bRegistered1))   -- prints true
 
local bRegistered2 = EVENT_MANAGER:RegisterForUpdate("RegisterTest", 3000, function() d("RegisterTest 2") end)
d(tostring(bRegistered2))   -- prints false

Although other problems also can cause a return of false:

Lua Code:

-- the function is nil
local bRegistered3 = EVENT_MANAGER:RegisterForUpdate("RegisterTest", 3000)
d(tostring(bRegistered3))   -- prints false

So I guess you can't rely on a return of false to know that something is already registered.
I'm still trying to figure out a way to determine if something is already registered or not.