lain is now as asynchronous as possible

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

diff --git a/widgets/contrib/kbdlayout.lua b/widgets/contrib/kbdlayout.lua
index c5242c18e814824fde7547318ccc8849939f3fb7..da3084c0e1131f70285ca3ded36a6612980e21b5 100644 (file)
--- a/widgets/contrib/kbdlayout.lua
+++ b/widgets/contrib/kbdlayout.lua
@@ -1,57 +1,77 @@
 
-local newtimer     = require("lain.helpers").newtimer
+--[[
+                                                  
+     Licensed under GNU General Public License v2 
+      * (c) 2015, Dario Gjorgjevski               
+                                                  
+--]]
+
+local helpers      = require("lain.helpers")
+local awful        = require("awful")
 local wibox        = require("wibox")
+local string       = { format = string.format,
+                       match  = string.match }
+local execute      = os.execute
+local setmetatable = setmetatable
 
-local string       = { match = string.match }
-local io           = { popen = io.popen }
+-- Keyboard layout switcher
+-- lain.widgets.contrib.kblayout
+local kbdlayout = helpers.make_widget_textbox()
 
-local setmetatable = setmetatable
+local function worker(args)
+   local args             = args or {}
+   local layouts          = args.layouts or {}
+   local settings         = args.settings or function () end
+   local add_us_secondary = true
+   local timeout          = args.timeout or 5
+   local idx              = 1
 
-local function worker (args)
-   local kbdlayout    = {}
-   kbdlayout.widget   = wibox.widget.textbox('')
+   if args.add_us_secondary == false then add_us_secondary = false end
 
-   local settings     = args.settings or function () end
-   local layouts      = args.layouts
-   local idx          = 1
-   
-   local function run_settings (layout, variant)
+   local function kbd_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=layout, variant=variant }
       settings()
    end
-   
-   function kbdlayout.update ()
-      local file   = assert(io.popen('setxkbmap -query'))
-      local status = file:read('*all')
-      file:close()
-
-      run_settings(string.match(status, "layout:%s*([^\n]*)%s*"),
-                  string.match(status, "variant:%s*([^\n]*)%s*"))
+
+   function kbdlayout.update()
+      helpers.async("setxkbmap -query", function(status)
+          kbd_run_settings(string.match(status, "layout:%s*([^\n]*)"),
+          string.match(status, "variant:%s*([^\n]*)"))
+      end)
    end
 
-   function kbdlayout.set (i)
+   function kbdlayout.set(i)
+      if #layouts == 0 then return end
       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
-        run_settings(layouts[idx].layout, layouts[idx].variant)
+      if execute(to_execute) then
+         kbd_run_settings(layouts[idx].layout, layouts[idx].variant)
       end
    end
 
-   function kbdlayout.next ()
-      kbdlayout.set(idx + 1)
-   end
+   function kbdlayout.next() kbdlayout.set(idx + 1) end
+   function kbdlayout.prev() kbdlayout.set(idx - 1) end
 
-   function kbdlayout.prev ()
-      kbdlayout.set(idx - 1)
-   end
+   -- Mouse bindings
+   kbdlayout.widget:buttons(awful.util.table.join(
+                              awful.button({ }, 1, function () kbdlayout.next() end),
+                              awful.button({ }, 3, function () kbdlayout.prev() end)))
+
+   helpers.newtimer("kbdlayout", timeout, kbdlayout.update)
 
-   newtimer("kbdlayout", args.timeout or 10, kbdlayout.update)
    return setmetatable(kbdlayout, { __index = kbdlayout.widget })
 end