Gladdy-TBC/Libs/AceTimer-3.0/AceTimer-3.0.lua

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--- **AceTimer-3.0** provides a central facility for registering timers.
-- AceTimer supports one-shot timers and repeating timers. All timers are stored in an efficient
-- data structure that allows easy dispatching and fast rescheduling. Timers can be registered
-- or canceled at any time, even from within a running timer, without conflict or large overhead.\\
-- AceTimer is currently limited to firing timers at a frequency of 0.01s as this is what the WoW timer API
-- restricts us to.
--
-- All `:Schedule` functions will return a handle to the current timer, which you will need to store if you
-- need to cancel the timer you just registered.
--
-- **AceTimer-3.0** can be embeded into your addon, either explicitly by calling AceTimer:Embed(MyAddon) or by
-- specifying it as an embeded library in your AceAddon. All functions will be available on your addon object
-- and can be accessed directly, without having to explicitly call AceTimer itself.\\
-- It is recommended to embed AceTimer, otherwise you'll have to specify a custom `self` on all calls you
-- make into AceTimer.
-- @class file
-- @name AceTimer-3.0
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-- @release $Id: AceTimer-3.0.lua 1284 2022-09-25 09:15:30Z nevcairiel $
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local MAJOR, MINOR = "AceTimer-3.0", 17 -- Bump minor on changes
local AceTimer, oldminor = LibStub:NewLibrary(MAJOR, MINOR)
if not AceTimer then return end -- No upgrade needed
AceTimer.activeTimers = AceTimer.activeTimers or {} -- Active timer list
local activeTimers = AceTimer.activeTimers -- Upvalue our private data
-- Lua APIs
local type, unpack, next, error, select = type, unpack, next, error, select
-- WoW APIs
local GetTime, C_TimerAfter = GetTime, C_Timer.After
local function new(self, loop, func, delay, ...)
if delay < 0.01 then
delay = 0.01 -- Restrict to the lowest time that the C_Timer API allows us
end
local timer = {
object = self,
func = func,
looping = loop,
argsCount = select("#", ...),
delay = delay,
ends = GetTime() + delay,
...
}
activeTimers[timer] = timer
-- Create new timer closure to wrap the "timer" object
timer.callback = function()
if not timer.cancelled then
if type(timer.func) == "string" then
-- We manually set the unpack count to prevent issues with an arg set that contains nil and ends with nil
-- e.g. local t = {1, 2, nil, 3, nil} print(#t) will result in 2, instead of 5. This fixes said issue.
timer.object[timer.func](timer.object, unpack(timer, 1, timer.argsCount))
else
timer.func(unpack(timer, 1, timer.argsCount))
end
if timer.looping and not timer.cancelled then
-- Compensate delay to get a perfect average delay, even if individual times don't match up perfectly
-- due to fps differences
local time = GetTime()
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local ndelay = timer.delay - (time - timer.ends)
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-- Ensure the delay doesn't go below the threshold
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if ndelay < 0.01 then ndelay = 0.01 end
C_TimerAfter(ndelay, timer.callback)
timer.ends = time + ndelay
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else
activeTimers[timer.handle or timer] = nil
end
end
end
C_TimerAfter(delay, timer.callback)
return timer
end
--- Schedule a new one-shot timer.
-- The timer will fire once in `delay` seconds, unless canceled before.
-- @param callback Callback function for the timer pulse (funcref or method name).
-- @param delay Delay for the timer, in seconds.
-- @param ... An optional, unlimited amount of arguments to pass to the callback function.
-- @usage
-- MyAddOn = LibStub("AceAddon-3.0"):NewAddon("MyAddOn", "AceTimer-3.0")
--
-- function MyAddOn:OnEnable()
-- self:ScheduleTimer("TimerFeedback", 5)
-- end
--
-- function MyAddOn:TimerFeedback()
-- print("5 seconds passed")
-- end
function AceTimer:ScheduleTimer(func, delay, ...)
if not func or not delay then
error(MAJOR..": ScheduleTimer(callback, delay, args...): 'callback' and 'delay' must have set values.", 2)
end
if type(func) == "string" then
if type(self) ~= "table" then
error(MAJOR..": ScheduleTimer(callback, delay, args...): 'self' - must be a table.", 2)
elseif not self[func] then
error(MAJOR..": ScheduleTimer(callback, delay, args...): Tried to register '"..func.."' as the callback, but it doesn't exist in the module.", 2)
end
end
return new(self, nil, func, delay, ...)
end
--- Schedule a repeating timer.
-- The timer will fire every `delay` seconds, until canceled.
-- @param callback Callback function for the timer pulse (funcref or method name).
-- @param delay Delay for the timer, in seconds.
-- @param ... An optional, unlimited amount of arguments to pass to the callback function.
-- @usage
-- MyAddOn = LibStub("AceAddon-3.0"):NewAddon("MyAddOn", "AceTimer-3.0")
--
-- function MyAddOn:OnEnable()
-- self.timerCount = 0
-- self.testTimer = self:ScheduleRepeatingTimer("TimerFeedback", 5)
-- end
--
-- function MyAddOn:TimerFeedback()
-- self.timerCount = self.timerCount + 1
-- print(("%d seconds passed"):format(5 * self.timerCount))
-- -- run 30 seconds in total
-- if self.timerCount == 6 then
-- self:CancelTimer(self.testTimer)
-- end
-- end
function AceTimer:ScheduleRepeatingTimer(func, delay, ...)
if not func or not delay then
error(MAJOR..": ScheduleRepeatingTimer(callback, delay, args...): 'callback' and 'delay' must have set values.", 2)
end
if type(func) == "string" then
if type(self) ~= "table" then
error(MAJOR..": ScheduleRepeatingTimer(callback, delay, args...): 'self' - must be a table.", 2)
elseif not self[func] then
error(MAJOR..": ScheduleRepeatingTimer(callback, delay, args...): Tried to register '"..func.."' as the callback, but it doesn't exist in the module.", 2)
end
end
return new(self, true, func, delay, ...)
end
--- Cancels a timer with the given id, registered by the same addon object as used for `:ScheduleTimer`
-- Both one-shot and repeating timers can be canceled with this function, as long as the `id` is valid
-- and the timer has not fired yet or was canceled before.
-- @param id The id of the timer, as returned by `:ScheduleTimer` or `:ScheduleRepeatingTimer`
function AceTimer:CancelTimer(id)
local timer = activeTimers[id]
if not timer then
return false
else
timer.cancelled = true
activeTimers[id] = nil
return true
end
end
--- Cancels all timers registered to the current addon object ('self')
function AceTimer:CancelAllTimers()
for k,v in next, activeTimers do
if v.object == self then
AceTimer.CancelTimer(self, k)
end
end
end
--- Returns the time left for a timer with the given id, registered by the current addon object ('self').
-- This function will return 0 when the id is invalid.
-- @param id The id of the timer, as returned by `:ScheduleTimer` or `:ScheduleRepeatingTimer`
-- @return The time left on the timer.
function AceTimer:TimeLeft(id)
local timer = activeTimers[id]
if not timer then
return 0
else
return timer.ends - GetTime()
end
end
-- ---------------------------------------------------------------------
-- Upgrading
-- Upgrade from old hash-bucket based timers to C_Timer.After timers.
if oldminor and oldminor < 10 then
-- disable old timer logic
AceTimer.frame:SetScript("OnUpdate", nil)
AceTimer.frame:SetScript("OnEvent", nil)
AceTimer.frame:UnregisterAllEvents()
-- convert timers
for object,timers in next, AceTimer.selfs do
for handle,timer in next, timers do
if type(timer) == "table" and timer.callback then
local newTimer
if timer.delay then
newTimer = AceTimer.ScheduleRepeatingTimer(timer.object, timer.callback, timer.delay, timer.arg)
else
newTimer = AceTimer.ScheduleTimer(timer.object, timer.callback, timer.when - GetTime(), timer.arg)
end
-- Use the old handle for old timers
activeTimers[newTimer] = nil
activeTimers[handle] = newTimer
newTimer.handle = handle
end
end
end
AceTimer.selfs = nil
AceTimer.hash = nil
AceTimer.debug = nil
elseif oldminor and oldminor < 17 then
-- Upgrade from old animation based timers to C_Timer.After timers.
AceTimer.inactiveTimers = nil
AceTimer.frame = nil
local oldTimers = AceTimer.activeTimers
-- Clear old timer table and update upvalue
AceTimer.activeTimers = {}
activeTimers = AceTimer.activeTimers
for handle, timer in next, oldTimers do
local newTimer
-- Stop the old timer animation
local duration, elapsed = timer:GetDuration(), timer:GetElapsed()
timer:GetParent():Stop()
if timer.looping then
newTimer = AceTimer.ScheduleRepeatingTimer(timer.object, timer.func, duration, unpack(timer.args, 1, timer.argsCount))
else
newTimer = AceTimer.ScheduleTimer(timer.object, timer.func, duration - elapsed, unpack(timer.args, 1, timer.argsCount))
end
-- Use the old handle for old timers
activeTimers[newTimer] = nil
activeTimers[handle] = newTimer
newTimer.handle = handle
end
-- Migrate transitional handles
if oldminor < 13 and AceTimer.hashCompatTable then
for handle, id in next, AceTimer.hashCompatTable do
local t = activeTimers[id]
if t then
activeTimers[id] = nil
activeTimers[handle] = t
t.handle = handle
end
end
AceTimer.hashCompatTable = nil
end
end
-- ---------------------------------------------------------------------
-- Embed handling
AceTimer.embeds = AceTimer.embeds or {}
local mixins = {
"ScheduleTimer", "ScheduleRepeatingTimer",
"CancelTimer", "CancelAllTimers",
"TimeLeft"
}
function AceTimer:Embed(target)
AceTimer.embeds[target] = true
for _,v in next, mixins do
target[v] = AceTimer[v]
end
return target
end
-- AceTimer:OnEmbedDisable(target)
-- target (object) - target object that AceTimer is embedded in.
--
-- cancel all timers registered for the object
function AceTimer:OnEmbedDisable(target)
target:CancelAllTimers()
end
for addon in next, AceTimer.embeds do
AceTimer:Embed(addon)
end