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fixing small typo in fs widget which lead to nil reference
[etc/awesome.git] / widgets / alsa.lua
index f62a150d18fcd7969accaeb53118841117d05107..979d9fd106470025942e650e99ac4e172d714fed 100644 (file)
@@ -12,7 +12,8 @@ local newtimer        = require("lain.helpers").newtimer
 local wibox           = require("wibox")
 
 local io              = { popen  = io.popen }
-local string          = { match  = string.match }
+local string          = { match  = string.match,
+                          format = string.format }
 
 local setmetatable    = setmetatable
 
@@ -23,13 +24,15 @@ local alsa = {}
 local function worker(args)
     local args     = args or {}
     local timeout  = args.timeout or 5
-    local channel  = args.channel or "Master"
     local settings = args.settings or function() end
 
+    alsa.cmd     = args.cmd or "amixer"
+    alsa.channel = args.channel or "Master"
+
     alsa.widget = wibox.widget.textbox('')
 
     function alsa.update()
-        local f = assert(io.popen('amixer -M get ' .. channel))
+        local f = assert(io.popen(string.format("%s get %s", alsa.cmd, alsa.channel)))
         local mixer = f:read("*a")
         f:close()
 
@@ -57,7 +60,9 @@ local function worker(args)
         settings()
     end
 
-    newtimer("alsa", timeout, alsa.update)
+    timer_id = string.format("alsa-%s-%s", alsa.cmd, alsa.channel)
+
+    newtimer(timer_id, timeout, alsa.update)
 
     return setmetatable(alsa, { __index = alsa.widget })
 end