GnomishVendorShrinker/externals/events.lua

95 lines
2.4 KiB
Lua

local myname, ns = ...
local frame = CreateFrame("Frame")
function ns.RegisterEvent(event, func)
frame:RegisterEvent(event)
if func then ns[event] = func end
end
function ns.UnregisterEvent(event)
frame:UnregisterEvent(event)
end
function ns.UnregisterAllEvents()
frame:UnregisterAllEvents()
end
-- Handles special OnLogin code for when the PLAYER_LOGIN event is fired.
-- If our addon is loaded after that event is fired, then we call it immediately
-- after the OnLoad handler is processed.
local function ProcessOnLogin()
if ns.OnLogin then
ns.OnLogin()
ns.OnLogin = nil
end
ProcessOnLogin = nil
if not ns.PLAYER_LOGIN then frame:UnregisterEvent("PLAYER_LOGIN") end
end
-- Handle special OnLoad code when our addon has loaded, if present
-- Also initializes the savedvar for us, if ns.dbname or ns.dbpcname is set
-- If ns.ADDON_LOADED is defined, the ADDON_LOADED event is not unregistered
local function ProcessOnLoad(arg1)
if arg1 ~= myname then return end
if ns.dbname then
local defaults = ns.dbdefaults or {}
_G[ns.dbname] = setmetatable(_G[ns.dbname] or {}, {__index = defaults})
ns.db = _G[ns.dbname]
end
if ns.dbpcname then
local defaults = ns.dbpcdefaults or {}
_G[ns.dbpcname] = setmetatable(_G[ns.dbpcname] or {}, {__index = defaults})
ns.dbpc = _G[ns.dbpcname]
end
if ns.OnLoad then
ns.OnLoad()
ns.OnLoad = nil
end
ProcessOnLoad = nil
if not ns.ADDON_LOADED then frame:UnregisterEvent("ADDON_LOADED") end
if ns.dbdefaults or ns.dbpcdefaults then ns.RegisterEvent("PLAYER_LOGOUT") end
if IsLoggedIn() then ProcessOnLogin()
else frame:RegisterEvent("PLAYER_LOGIN") end
end
-- Removes the default values from the db and dbpc as we're logging out
local function ProcessLogout()
if ns.dbdefaults then
for i,v in pairs(ns.dbdefaults) do
if ns.db[i] == v then ns.db[i] = nil end
end
end
if ns.dbpcdefaults then
for i,v in pairs(ns.dbpcdefaults) do
if ns.dbpc[i] == v then ns.dbpc[i] = nil end
end
end
end
frame:RegisterEvent("ADDON_LOADED")
frame:SetScript("OnEvent", function(self, event, arg1, ...)
if ProcessOnLoad and event == "ADDON_LOADED" then ProcessOnLoad(arg1) end
if ProcessOnLogin and event == "PLAYER_LOGIN" then ProcessOnLogin() end
if event == "PLAYER_LOGOUT" then ProcessLogout() end
if ns[event] then ns[event](event, arg1, ...) end
end)