Load widgets as needed instead of all at startup

contrib/init.lua

@@ -5,20 +5,12 @@
 --  * (c) 2010, Adrian C. <anrxc@sysphere.org>
 ---------------------------------------------------
 
--- {{{ Configure widgets
-require("vicious.contrib.batacpi")
-require("vicious.contrib.batpmu")
-require("vicious.contrib.batproc")
-require("vicious.contrib.dio")
-require("vicious.contrib.mpc")
-require("vicious.contrib.netcfg")
-require("vicious.contrib.net")
-require("vicious.contrib.ossvol")
-require("vicious.contrib.pop")
-require("vicious.contrib.pulse")
-require("vicious.contrib.rss")
-require("vicious.contrib.sensors")
--- }}}
+
+local setmetatable = setmetatable
+local require_once = require("vicious.helpers").require_once
 
 -- Vicious: widgets for the awesome window manager
 module("vicious.contrib")
+
+-- Load modules at runtime as needed
+setmetatable(_M,   {__index = require_once} )

helpers.lua

@@ -13,6 +13,8 @@ local tonumber = tonumber
 local io = { open = io.open }
 local setmetatable = setmetatable
 local getmetatable = getmetatable
+local require = require
+local rawget = rawget
 local string = {
     upper = string.upper,
     format = string.format
@@ -29,6 +31,14 @@ local scroller = {}
 -- }}}
 
 -- {{{ Helper functions
+
+-- {{{ Require a submodule once
+function require_once(t,  key)                                                                                        
+	local module = rawget(t,  key)                                                                                
+	return module or require(t._NAME.."."..key)
+end
+-- }}}
+
 -- {{{ Expose path as a Lua table
 function pathtotable(dir)
     return setmetatable({ _path = dir },

widgets/init.lua

@@ -5,32 +5,11 @@
 --  * (c) 2010, Adrian C. <anrxc@sysphere.org>
 ---------------------------------------------------
 
--- {{{ Configure widgets
-require("vicious.widgets.cpu")
-require("vicious.widgets.cpuinf")
-require("vicious.widgets.cpufreq")
-require("vicious.widgets.thermal")
-require("vicious.widgets.uptime")
-require("vicious.widgets.bat")
-require("vicious.widgets.mem")
-require("vicious.widgets.os")
-require("vicious.widgets.fs")
-require("vicious.widgets.dio")
-require("vicious.widgets.raid")
-require("vicious.widgets.hddtemp")
-require("vicious.widgets.net")
-require("vicious.widgets.wifi")
-require("vicious.widgets.mbox")
-require("vicious.widgets.mboxc")
-require("vicious.widgets.mdir")
-require("vicious.widgets.gmail")
-require("vicious.widgets.org")
-require("vicious.widgets.pkg")
-require("vicious.widgets.mpd")
-require("vicious.widgets.volume")
-require("vicious.widgets.weather")
-require("vicious.widgets.date")
--- }}}
+local setmetatable = setmetatable
+local require_once = require("vicious.helpers").require_once
 
 -- Vicious: widgets for the awesome window manager
 module("vicious.widgets")
+
+-- Load modules at runtime as needed
+setmetatable(_M,  {__index = require_once} )