wow/raid-target-tactics: class.lua comparison

class implementation, Icon class for Raid Target Icons

comparison

equal deleted inserted replaced

-:7201711b23e9
+:f93b554bb7cf
+-- class.lua
+-- taken from http://lua-users.org/wiki/SimpleLuaClasses
+-- Compatible with Lua 5.1 (not 5.0).
+function class(base, init)
+local c = {}    -- a new class instance
+if not init and type(base) == 'function' then
+init = base
+base = nil
+elseif type(base) == 'table' then
+-- our new class is a shallow copy of the base class!
+for i,v in pairs(base) do
+c[i] = v
+end
+c._base = base
+end
+-- the class will be the metatable for all its objects,
+-- and they will look up their methods in it.
+c.__index = c
+-- expose a constructor which can be called by <classname>(<args>)
+local mt = {}
+mt.__call = function(class_tbl, ...)
+local obj = {}
+setmetatable(obj,c)
+if class_tbl.init then
+class_tbl.init(obj,...)
+else
+-- make sure that any stuff from the base class is initialized!
+if base and base.init then
+base.init(obj, ...)
+end
+end
+return obj
+end
+c.init = init
+c.is_a = function(self, klass)
+local m = getmetatable(self)
+while m do
+if m == klass then return true end
+m = m._base
+end
+return false
+end
+setmetatable(c, mt)
+return c
+end

Mercurial > wow > raid-target-tactics