contrib.kbdlayout: asynchronous

[etc/awesome.git] / widgets / contrib / kbdlayout.lua

diff --git a/widgets/contrib/kbdlayout.lua b/widgets/contrib/kbdlayout.lua
index 64ea6b30fa83b93bd059d5c47f9ad1771abfc1da..cd753f6eb61d147b76be94db176507152c4eed77 100644 (file)
--- a/widgets/contrib/kbdlayout.lua
+++ b/widgets/contrib/kbdlayout.lua
@@ -6,23 +6,22 @@
                                                   
 --]]
 
-local newtimer     = require("lain.helpers").newtimer
-local read_pipe    = require("lain.helpers").read_pipe
+local helpers      = require("lain.helpers")
 
-local wibox        = require("wibox")
 local awful        = require("awful")
+local wibox        = require("wibox")
 
-local string       = { match = string.match }
+local string       = { format = string.format,
+                       match  = string.match }
+local execute      = os.execute
 
 local setmetatable = setmetatable
 
 -- Keyboard layout switcher
 -- lain.widgets.contrib.kblayout
 
-local function worker (args)
-   local kbdlayout    = {}
-   kbdlayout.widget   = wibox.widget.textbox('')
-
+local function worker(args)
+   local kbdlayout        = {}
    local layouts          = args.layouts
    local settings         = args.settings or function () end
    local add_us_secondary = true
@@ -31,51 +30,57 @@ local function worker (args)
 
    if args.add_us_secondary == false then add_us_secondary = false end
 
+   kbdlayout.widget = wibox.widget.textbox()
+
    -- Mouse bindings
    kbdlayout.widget:buttons(awful.util.table.join(
                               awful.button({ }, 1, function () kbdlayout.next() end),
                               awful.button({ }, 3, function () kbdlayout.prev() end)))
 
-   local function run_settings (layout, variant)
+   local function run_settings(layout, variant)
+      kbdlayout_now = {
+          layout  = string.match(layout, "[^,]+"), -- Make sure to match the primary layout only.
+          variant = variant
+      }
       widget = kbdlayout.widget
-      kbdlayout_now = { layout=string.match(layout, "[^,]+"), -- Make sure to match the primary layout only.
-                       variant=variant }
       settings()
    end
 
-   function kbdlayout.update ()
-      local status = read_pipe('setxkbmap -query')
-
-      run_settings(string.match(status, "layout:%s*([^\n]*)"),
-                   string.match(status, "variant:%s*([^\n]*)"))
+   function kbdlayout.update()
+      helpers.async(string.format("%s -c 'setxkbmap -query'", awful.util.shell),
+      function(status)
+          run_settings(string.match(status, "layout:%s*([^\n]*)"),
+          string.match(status, "variant:%s*([^\n]*)"))
+      end)
    end
 
-   function kbdlayout.set (i)
+   function kbdlayout.set(i)
       idx = ((i - 1) % #layouts) + 1 -- Make sure to wrap around as needed.
-      local to_execute = 'setxkbmap ' .. layouts[idx].layout
+      local to_execute = "setxkbmap " .. layouts[idx].layout
 
       if add_us_secondary and not string.match(layouts[idx].layout, ",?us,?") then
          to_execute = to_execute .. ",us"
       end
 
       if layouts[idx].variant then
-         to_execute = to_execute .. ' ' .. layouts[idx].variant
+         to_execute = to_execute .. " " .. layouts[idx].variant
       end
 
-      if os.execute(to_execute) then
+      if execute(to_execute) then
          run_settings(layouts[idx].layout, layouts[idx].variant)
       end
    end
 
-   function kbdlayout.next ()
+   function kbdlayout.next()
       kbdlayout.set(idx + 1)
    end
 
-   function kbdlayout.prev ()
+   function kbdlayout.prev()
       kbdlayout.set(idx - 1)
    end
 
-   newtimer("kbdlayout", timeout, kbdlayout.update)
+   helpers.newtimer("kbdlayout", timeout, kbdlayout.update)
+
    return setmetatable(kbdlayout, { __index = kbdlayout.widget })
 end