AuctionLite-classic/Libs/AceAddon-3.0/AceAddon-3.0.lua
2019-09-11 22:30:24 +02:00

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Lua

--- **AceAddon-3.0** provides a template for creating addon objects.
-- It'll provide you with a set of callback functions that allow you to simplify the loading
-- process of your addon.\\
-- Callbacks provided are:\\
-- * **OnInitialize**, which is called directly after the addon is fully loaded.
-- * **OnEnable** which gets called during the PLAYER_LOGIN event, when most of the data provided by the game is already present.
-- * **OnDisable**, which is only called when your addon is manually being disabled.
-- @usage
-- -- A small (but complete) addon, that doesn't do anything,
-- -- but shows usage of the callbacks.
-- local MyAddon = LibStub("AceAddon-3.0"):NewAddon("MyAddon")
--
-- function MyAddon:OnInitialize()
-- -- do init tasks here, like loading the Saved Variables,
-- -- or setting up slash commands.
-- end
--
-- function MyAddon:OnEnable()
-- -- Do more initialization here, that really enables the use of your addon.
-- -- Register Events, Hook functions, Create Frames, Get information from
-- -- the game that wasn't available in OnInitialize
-- end
--
-- function MyAddon:OnDisable()
-- -- Unhook, Unregister Events, Hide frames that you created.
-- -- You would probably only use an OnDisable if you want to
-- -- build a "standby" mode, or be able to toggle modules on/off.
-- end
-- @class file
-- @name AceAddon-3.0.lua
-- @release $Id: AceAddon-3.0.lua 1202 2019-05-15 23:11:22Z nevcairiel $
local MAJOR, MINOR = "AceAddon-3.0", 12
local AceAddon, oldminor = LibStub:NewLibrary(MAJOR, MINOR)
if not AceAddon then return end -- No Upgrade needed.
AceAddon.frame = AceAddon.frame or CreateFrame("Frame", "AceAddon30Frame") -- Our very own frame
AceAddon.addons = AceAddon.addons or {} -- addons in general
AceAddon.statuses = AceAddon.statuses or {} -- statuses of addon.
AceAddon.initializequeue = AceAddon.initializequeue or {} -- addons that are new and not initialized
AceAddon.enablequeue = AceAddon.enablequeue or {} -- addons that are initialized and waiting to be enabled
AceAddon.embeds = AceAddon.embeds or setmetatable({}, {__index = function(tbl, key) tbl[key] = {} return tbl[key] end }) -- contains a list of libraries embedded in an addon
-- Lua APIs
local tinsert, tconcat, tremove = table.insert, table.concat, table.remove
local fmt, tostring = string.format, tostring
local select, pairs, next, type, unpack = select, pairs, next, type, unpack
local loadstring, assert, error = loadstring, assert, error
local setmetatable, getmetatable, rawset, rawget = setmetatable, getmetatable, rawset, rawget
-- Global vars/functions that we don't upvalue since they might get hooked, or upgraded
-- List them here for Mikk's FindGlobals script
-- GLOBALS: LibStub, IsLoggedIn, geterrorhandler
--[[
xpcall safecall implementation
]]
local xpcall = xpcall
local function errorhandler(err)
return geterrorhandler()(err)
end
local function safecall(func, ...)
-- we check to see if the func is passed is actually a function here and don't error when it isn't
-- this safecall is used for optional functions like OnInitialize OnEnable etc. When they are not
-- present execution should continue without hinderance
if type(func) == "function" then
return xpcall(func, errorhandler, ...)
end
end
-- local functions that will be implemented further down
local Enable, Disable, EnableModule, DisableModule, Embed, NewModule, GetModule, GetName, SetDefaultModuleState, SetDefaultModuleLibraries, SetEnabledState, SetDefaultModulePrototype
-- used in the addon metatable
local function addontostring( self ) return self.name end
-- Check if the addon is queued for initialization
local function queuedForInitialization(addon)
for i = 1, #AceAddon.initializequeue do
if AceAddon.initializequeue[i] == addon then
return true
end
end
return false
end
--- Create a new AceAddon-3.0 addon.
-- Any libraries you specified will be embeded, and the addon will be scheduled for
-- its OnInitialize and OnEnable callbacks.
-- The final addon object, with all libraries embeded, will be returned.
-- @paramsig [object ,]name[, lib, ...]
-- @param object Table to use as a base for the addon (optional)
-- @param name Name of the addon object to create
-- @param lib List of libraries to embed into the addon
-- @usage
-- -- Create a simple addon object
-- MyAddon = LibStub("AceAddon-3.0"):NewAddon("MyAddon", "AceEvent-3.0")
--
-- -- Create a Addon object based on the table of a frame
-- local MyFrame = CreateFrame("Frame")
-- MyAddon = LibStub("AceAddon-3.0"):NewAddon(MyFrame, "MyAddon", "AceEvent-3.0")
function AceAddon:NewAddon(objectorname, ...)
local object,name
local i=1
if type(objectorname)=="table" then
object=objectorname
name=...
i=2
else
name=objectorname
end
if type(name)~="string" then
error(("Usage: NewAddon([object,] name, [lib, lib, lib, ...]): 'name' - string expected got '%s'."):format(type(name)), 2)
end
if self.addons[name] then
error(("Usage: NewAddon([object,] name, [lib, lib, lib, ...]): 'name' - Addon '%s' already exists."):format(name), 2)
end
object = object or {}
object.name = name
local addonmeta = {}
local oldmeta = getmetatable(object)
if oldmeta then
for k, v in pairs(oldmeta) do addonmeta[k] = v end
end
addonmeta.__tostring = addontostring
setmetatable( object, addonmeta )
self.addons[name] = object
object.modules = {}
object.orderedModules = {}
object.defaultModuleLibraries = {}
Embed( object ) -- embed NewModule, GetModule methods
self:EmbedLibraries(object, select(i,...))
-- add to queue of addons to be initialized upon ADDON_LOADED
tinsert(self.initializequeue, object)
return object
end
--- Get the addon object by its name from the internal AceAddon registry.
-- Throws an error if the addon object cannot be found (except if silent is set).
-- @param name unique name of the addon object
-- @param silent if true, the addon is optional, silently return nil if its not found
-- @usage
-- -- Get the Addon
-- MyAddon = LibStub("AceAddon-3.0"):GetAddon("MyAddon")
function AceAddon:GetAddon(name, silent)
if not silent and not self.addons[name] then
error(("Usage: GetAddon(name): 'name' - Cannot find an AceAddon '%s'."):format(tostring(name)), 2)
end
return self.addons[name]
end
-- - Embed a list of libraries into the specified addon.
-- This function will try to embed all of the listed libraries into the addon
-- and error if a single one fails.
--
-- **Note:** This function is for internal use by :NewAddon/:NewModule
-- @paramsig addon, [lib, ...]
-- @param addon addon object to embed the libs in
-- @param lib List of libraries to embed into the addon
function AceAddon:EmbedLibraries(addon, ...)
for i=1,select("#", ... ) do
local libname = select(i, ...)
self:EmbedLibrary(addon, libname, false, 4)
end
end
-- - Embed a library into the addon object.
-- This function will check if the specified library is registered with LibStub
-- and if it has a :Embed function to call. It'll error if any of those conditions
-- fails.
--
-- **Note:** This function is for internal use by :EmbedLibraries
-- @paramsig addon, libname[, silent[, offset]]
-- @param addon addon object to embed the library in
-- @param libname name of the library to embed
-- @param silent marks an embed to fail silently if the library doesn't exist (optional)
-- @param offset will push the error messages back to said offset, defaults to 2 (optional)
function AceAddon:EmbedLibrary(addon, libname, silent, offset)
local lib = LibStub:GetLibrary(libname, true)
if not lib and not silent then
error(("Usage: EmbedLibrary(addon, libname, silent, offset): 'libname' - Cannot find a library instance of %q."):format(tostring(libname)), offset or 2)
elseif lib and type(lib.Embed) == "function" then
lib:Embed(addon)
tinsert(self.embeds[addon], libname)
return true
elseif lib then
error(("Usage: EmbedLibrary(addon, libname, silent, offset): 'libname' - Library '%s' is not Embed capable"):format(libname), offset or 2)
end
end
--- Return the specified module from an addon object.
-- Throws an error if the addon object cannot be found (except if silent is set)
-- @name //addon//:GetModule
-- @paramsig name[, silent]
-- @param name unique name of the module
-- @param silent if true, the module is optional, silently return nil if its not found (optional)
-- @usage
-- -- Get the Addon
-- MyAddon = LibStub("AceAddon-3.0"):GetAddon("MyAddon")
-- -- Get the Module
-- MyModule = MyAddon:GetModule("MyModule")
function GetModule(self, name, silent)
if not self.modules[name] and not silent then
error(("Usage: GetModule(name, silent): 'name' - Cannot find module '%s'."):format(tostring(name)), 2)
end
return self.modules[name]
end
local function IsModuleTrue(self) return true end
--- Create a new module for the addon.
-- The new module can have its own embeded libraries and/or use a module prototype to be mixed into the module.\\
-- A module has the same functionality as a real addon, it can have modules of its own, and has the same API as
-- an addon object.
-- @name //addon//:NewModule
-- @paramsig name[, prototype|lib[, lib, ...]]
-- @param name unique name of the module
-- @param prototype object to derive this module from, methods and values from this table will be mixed into the module (optional)
-- @param lib List of libraries to embed into the addon
-- @usage
-- -- Create a module with some embeded libraries
-- MyModule = MyAddon:NewModule("MyModule", "AceEvent-3.0", "AceHook-3.0")
--
-- -- Create a module with a prototype
-- local prototype = { OnEnable = function(self) print("OnEnable called!") end }
-- MyModule = MyAddon:NewModule("MyModule", prototype, "AceEvent-3.0", "AceHook-3.0")
function NewModule(self, name, prototype, ...)
if type(name) ~= "string" then error(("Usage: NewModule(name, [prototype, [lib, lib, lib, ...]): 'name' - string expected got '%s'."):format(type(name)), 2) end
if type(prototype) ~= "string" and type(prototype) ~= "table" and type(prototype) ~= "nil" then error(("Usage: NewModule(name, [prototype, [lib, lib, lib, ...]): 'prototype' - table (prototype), string (lib) or nil expected got '%s'."):format(type(prototype)), 2) end
if self.modules[name] then error(("Usage: NewModule(name, [prototype, [lib, lib, lib, ...]): 'name' - Module '%s' already exists."):format(name), 2) end
-- modules are basically addons. We treat them as such. They will be added to the initializequeue properly as well.
-- NewModule can only be called after the parent addon is present thus the modules will be initialized after their parent is.
local module = AceAddon:NewAddon(fmt("%s_%s", self.name or tostring(self), name))
module.IsModule = IsModuleTrue
module:SetEnabledState(self.defaultModuleState)
module.moduleName = name
if type(prototype) == "string" then
AceAddon:EmbedLibraries(module, prototype, ...)
else
AceAddon:EmbedLibraries(module, ...)
end
AceAddon:EmbedLibraries(module, unpack(self.defaultModuleLibraries))
if not prototype or type(prototype) == "string" then
prototype = self.defaultModulePrototype or nil
end
if type(prototype) == "table" then
local mt = getmetatable(module)
mt.__index = prototype
setmetatable(module, mt) -- More of a Base class type feel.
end
safecall(self.OnModuleCreated, self, module) -- Was in Ace2 and I think it could be a cool thing to have handy.
self.modules[name] = module
tinsert(self.orderedModules, module)
return module
end
--- Returns the real name of the addon or module, without any prefix.
-- @name //addon//:GetName
-- @paramsig
-- @usage
-- print(MyAddon:GetName())
-- -- prints "MyAddon"
function GetName(self)
return self.moduleName or self.name
end
--- Enables the Addon, if possible, return true or false depending on success.
-- This internally calls AceAddon:EnableAddon(), thus dispatching a OnEnable callback
-- and enabling all modules of the addon (unless explicitly disabled).\\
-- :Enable() also sets the internal `enableState` variable to true
-- @name //addon//:Enable
-- @paramsig
-- @usage
-- -- Enable MyModule
-- MyAddon = LibStub("AceAddon-3.0"):GetAddon("MyAddon")
-- MyModule = MyAddon:GetModule("MyModule")
-- MyModule:Enable()
function Enable(self)
self:SetEnabledState(true)
-- nevcairiel 2013-04-27: don't enable an addon/module if its queued for init still
-- it'll be enabled after the init process
if not queuedForInitialization(self) then
return AceAddon:EnableAddon(self)
end
end
--- Disables the Addon, if possible, return true or false depending on success.
-- This internally calls AceAddon:DisableAddon(), thus dispatching a OnDisable callback
-- and disabling all modules of the addon.\\
-- :Disable() also sets the internal `enableState` variable to false
-- @name //addon//:Disable
-- @paramsig
-- @usage
-- -- Disable MyAddon
-- MyAddon = LibStub("AceAddon-3.0"):GetAddon("MyAddon")
-- MyAddon:Disable()
function Disable(self)
self:SetEnabledState(false)
return AceAddon:DisableAddon(self)
end
--- Enables the Module, if possible, return true or false depending on success.
-- Short-hand function that retrieves the module via `:GetModule` and calls `:Enable` on the module object.
-- @name //addon//:EnableModule
-- @paramsig name
-- @usage
-- -- Enable MyModule using :GetModule
-- MyAddon = LibStub("AceAddon-3.0"):GetAddon("MyAddon")
-- MyModule = MyAddon:GetModule("MyModule")
-- MyModule:Enable()
--
-- -- Enable MyModule using the short-hand
-- MyAddon = LibStub("AceAddon-3.0"):GetAddon("MyAddon")
-- MyAddon:EnableModule("MyModule")
function EnableModule(self, name)
local module = self:GetModule( name )
return module:Enable()
end
--- Disables the Module, if possible, return true or false depending on success.
-- Short-hand function that retrieves the module via `:GetModule` and calls `:Disable` on the module object.
-- @name //addon//:DisableModule
-- @paramsig name
-- @usage
-- -- Disable MyModule using :GetModule
-- MyAddon = LibStub("AceAddon-3.0"):GetAddon("MyAddon")
-- MyModule = MyAddon:GetModule("MyModule")
-- MyModule:Disable()
--
-- -- Disable MyModule using the short-hand
-- MyAddon = LibStub("AceAddon-3.0"):GetAddon("MyAddon")
-- MyAddon:DisableModule("MyModule")
function DisableModule(self, name)
local module = self:GetModule( name )
return module:Disable()
end
--- Set the default libraries to be mixed into all modules created by this object.
-- Note that you can only change the default module libraries before any module is created.
-- @name //addon//:SetDefaultModuleLibraries
-- @paramsig lib[, lib, ...]
-- @param lib List of libraries to embed into the addon
-- @usage
-- -- Create the addon object
-- MyAddon = LibStub("AceAddon-3.0"):NewAddon("MyAddon")
-- -- Configure default libraries for modules (all modules need AceEvent-3.0)
-- MyAddon:SetDefaultModuleLibraries("AceEvent-3.0")
-- -- Create a module
-- MyModule = MyAddon:NewModule("MyModule")
function SetDefaultModuleLibraries(self, ...)
if next(self.modules) then
error("Usage: SetDefaultModuleLibraries(...): cannot change the module defaults after a module has been registered.", 2)
end
self.defaultModuleLibraries = {...}
end
--- Set the default state in which new modules are being created.
-- Note that you can only change the default state before any module is created.
-- @name //addon//:SetDefaultModuleState
-- @paramsig state
-- @param state Default state for new modules, true for enabled, false for disabled
-- @usage
-- -- Create the addon object
-- MyAddon = LibStub("AceAddon-3.0"):NewAddon("MyAddon")
-- -- Set the default state to "disabled"
-- MyAddon:SetDefaultModuleState(false)
-- -- Create a module and explicilty enable it
-- MyModule = MyAddon:NewModule("MyModule")
-- MyModule:Enable()
function SetDefaultModuleState(self, state)
if next(self.modules) then
error("Usage: SetDefaultModuleState(state): cannot change the module defaults after a module has been registered.", 2)
end
self.defaultModuleState = state
end
--- Set the default prototype to use for new modules on creation.
-- Note that you can only change the default prototype before any module is created.
-- @name //addon//:SetDefaultModulePrototype
-- @paramsig prototype
-- @param prototype Default prototype for the new modules (table)
-- @usage
-- -- Define a prototype
-- local prototype = { OnEnable = function(self) print("OnEnable called!") end }
-- -- Set the default prototype
-- MyAddon:SetDefaultModulePrototype(prototype)
-- -- Create a module and explicitly Enable it
-- MyModule = MyAddon:NewModule("MyModule")
-- MyModule:Enable()
-- -- should print "OnEnable called!" now
-- @see NewModule
function SetDefaultModulePrototype(self, prototype)
if next(self.modules) then
error("Usage: SetDefaultModulePrototype(prototype): cannot change the module defaults after a module has been registered.", 2)
end
if type(prototype) ~= "table" then
error(("Usage: SetDefaultModulePrototype(prototype): 'prototype' - table expected got '%s'."):format(type(prototype)), 2)
end
self.defaultModulePrototype = prototype
end
--- Set the state of an addon or module
-- This should only be called before any enabling actually happend, e.g. in/before OnInitialize.
-- @name //addon//:SetEnabledState
-- @paramsig state
-- @param state the state of an addon or module (enabled=true, disabled=false)
function SetEnabledState(self, state)
self.enabledState = state
end
--- Return an iterator of all modules associated to the addon.
-- @name //addon//:IterateModules
-- @paramsig
-- @usage
-- -- Enable all modules
-- for name, module in MyAddon:IterateModules() do
-- module:Enable()
-- end
local function IterateModules(self) return pairs(self.modules) end
-- Returns an iterator of all embeds in the addon
-- @name //addon//:IterateEmbeds
-- @paramsig
local function IterateEmbeds(self) return pairs(AceAddon.embeds[self]) end
--- Query the enabledState of an addon.
-- @name //addon//:IsEnabled
-- @paramsig
-- @usage
-- if MyAddon:IsEnabled() then
-- MyAddon:Disable()
-- end
local function IsEnabled(self) return self.enabledState end
local mixins = {
NewModule = NewModule,
GetModule = GetModule,
Enable = Enable,
Disable = Disable,
EnableModule = EnableModule,
DisableModule = DisableModule,
IsEnabled = IsEnabled,
SetDefaultModuleLibraries = SetDefaultModuleLibraries,
SetDefaultModuleState = SetDefaultModuleState,
SetDefaultModulePrototype = SetDefaultModulePrototype,
SetEnabledState = SetEnabledState,
IterateModules = IterateModules,
IterateEmbeds = IterateEmbeds,
GetName = GetName,
}
local function IsModule(self) return false end
local pmixins = {
defaultModuleState = true,
enabledState = true,
IsModule = IsModule,
}
-- Embed( target )
-- target (object) - target object to embed aceaddon in
--
-- this is a local function specifically since it's meant to be only called internally
function Embed(target, skipPMixins)
for k, v in pairs(mixins) do
target[k] = v
end
if not skipPMixins then
for k, v in pairs(pmixins) do
target[k] = target[k] or v
end
end
end
-- - Initialize the addon after creation.
-- This function is only used internally during the ADDON_LOADED event
-- It will call the **OnInitialize** function on the addon object (if present),
-- and the **OnEmbedInitialize** function on all embeded libraries.
--
-- **Note:** Do not call this function manually, unless you're absolutely sure that you know what you are doing.
-- @param addon addon object to intialize
function AceAddon:InitializeAddon(addon)
safecall(addon.OnInitialize, addon)
local embeds = self.embeds[addon]
for i = 1, #embeds do
local lib = LibStub:GetLibrary(embeds[i], true)
if lib then safecall(lib.OnEmbedInitialize, lib, addon) end
end
-- we don't call InitializeAddon on modules specifically, this is handled
-- from the event handler and only done _once_
end
-- - Enable the addon after creation.
-- Note: This function is only used internally during the PLAYER_LOGIN event, or during ADDON_LOADED,
-- if IsLoggedIn() already returns true at that point, e.g. for LoD Addons.
-- It will call the **OnEnable** function on the addon object (if present),
-- and the **OnEmbedEnable** function on all embeded libraries.\\
-- This function does not toggle the enable state of the addon itself, and will return early if the addon is disabled.
--
-- **Note:** Do not call this function manually, unless you're absolutely sure that you know what you are doing.
-- Use :Enable on the addon itself instead.
-- @param addon addon object to enable
function AceAddon:EnableAddon(addon)
if type(addon) == "string" then addon = AceAddon:GetAddon(addon) end
if self.statuses[addon.name] or not addon.enabledState then return false end
-- set the statuses first, before calling the OnEnable. this allows for Disabling of the addon in OnEnable.
self.statuses[addon.name] = true
safecall(addon.OnEnable, addon)
-- make sure we're still enabled before continueing
if self.statuses[addon.name] then
local embeds = self.embeds[addon]
for i = 1, #embeds do
local lib = LibStub:GetLibrary(embeds[i], true)
if lib then safecall(lib.OnEmbedEnable, lib, addon) end
end
-- enable possible modules.
local modules = addon.orderedModules
for i = 1, #modules do
self:EnableAddon(modules[i])
end
end
return self.statuses[addon.name] -- return true if we're disabled
end
-- - Disable the addon
-- Note: This function is only used internally.
-- It will call the **OnDisable** function on the addon object (if present),
-- and the **OnEmbedDisable** function on all embeded libraries.\\
-- This function does not toggle the enable state of the addon itself, and will return early if the addon is still enabled.
--
-- **Note:** Do not call this function manually, unless you're absolutely sure that you know what you are doing.
-- Use :Disable on the addon itself instead.
-- @param addon addon object to enable
function AceAddon:DisableAddon(addon)
if type(addon) == "string" then addon = AceAddon:GetAddon(addon) end
if not self.statuses[addon.name] then return false end
-- set statuses first before calling OnDisable, this allows for aborting the disable in OnDisable.
self.statuses[addon.name] = false
safecall( addon.OnDisable, addon )
-- make sure we're still disabling...
if not self.statuses[addon.name] then
local embeds = self.embeds[addon]
for i = 1, #embeds do
local lib = LibStub:GetLibrary(embeds[i], true)
if lib then safecall(lib.OnEmbedDisable, lib, addon) end
end
-- disable possible modules.
local modules = addon.orderedModules
for i = 1, #modules do
self:DisableAddon(modules[i])
end
end
return not self.statuses[addon.name] -- return true if we're disabled
end
--- Get an iterator over all registered addons.
-- @usage
-- -- Print a list of all installed AceAddon's
-- for name, addon in AceAddon:IterateAddons() do
-- print("Addon: " .. name)
-- end
function AceAddon:IterateAddons() return pairs(self.addons) end
--- Get an iterator over the internal status registry.
-- @usage
-- -- Print a list of all enabled addons
-- for name, status in AceAddon:IterateAddonStatus() do
-- if status then
-- print("EnabledAddon: " .. name)
-- end
-- end
function AceAddon:IterateAddonStatus() return pairs(self.statuses) end
-- Following Iterators are deprecated, and their addon specific versions should be used
-- e.g. addon:IterateEmbeds() instead of :IterateEmbedsOnAddon(addon)
function AceAddon:IterateEmbedsOnAddon(addon) return pairs(self.embeds[addon]) end
function AceAddon:IterateModulesOfAddon(addon) return pairs(addon.modules) end
-- Event Handling
local function onEvent(this, event, arg1)
-- 2011-08-17 nevcairiel - ignore the load event of Blizzard_DebugTools, so a potential startup error isn't swallowed up
if (event == "ADDON_LOADED" and arg1 ~= "Blizzard_DebugTools") or event == "PLAYER_LOGIN" then
-- if a addon loads another addon, recursion could happen here, so we need to validate the table on every iteration
while(#AceAddon.initializequeue > 0) do
local addon = tremove(AceAddon.initializequeue, 1)
-- this might be an issue with recursion - TODO: validate
if event == "ADDON_LOADED" then addon.baseName = arg1 end
AceAddon:InitializeAddon(addon)
tinsert(AceAddon.enablequeue, addon)
end
if IsLoggedIn() then
while(#AceAddon.enablequeue > 0) do
local addon = tremove(AceAddon.enablequeue, 1)
AceAddon:EnableAddon(addon)
end
end
end
end
AceAddon.frame:RegisterEvent("ADDON_LOADED")
AceAddon.frame:RegisterEvent("PLAYER_LOGIN")
AceAddon.frame:SetScript("OnEvent", onEvent)
-- upgrade embeded
for name, addon in pairs(AceAddon.addons) do
Embed(addon, true)
end
-- 2010-10-27 nevcairiel - add new "orderedModules" table
if oldminor and oldminor < 10 then
for name, addon in pairs(AceAddon.addons) do
addon.orderedModules = {}
for module_name, module in pairs(addon.modules) do
tinsert(addon.orderedModules, module)
end
end
end