Add wifi widget

wifi.lua

@@ -0,0 +1,52 @@
+local vicious = require("vicious")
+local wibox = require("wibox")
+
+local icon_wifi
+local icon_excellent
+local icon_good
+local icon_ok
+local icon_none
+
+
+-- Create layout with widgets
+local widget = wibox.widget {
+   {
+      id = "icon",
+      widget = wibox.widget.imagebox,
+      resize = true
+   },
+   {
+      id = "text",
+      widget = wibox.widget.textbox,
+      resize = true
+   },
+   layout = wibox.layout.align.horizontal
+}
+vicious.register(widget.text, vicious.widgets.wifi,
+    function (w, args)
+        if args["{ssid}"] ~= "N/A" then
+            if args["{linp}"] >= 66 then
+                widget.icon:set_image(icon_excellent)
+            elseif args["{linp}"] >= 33 then
+                widget.icon:set_image(icon_good)
+            elseif args["{linp}"] >= 1 then
+                widget.icon:set_image(icon_ok)
+            else
+                widget.icon:set_image(icon_none)
+            end
+        else
+            widget.icon:set_image(icon_wifi)
+        end
+        return " " .. args["{ssid}"]
+    end, 2, "wlp64s0")
+
+-- Widget function that is available from the outside.
+function widget.set_icons(wifi, excellent, good, ok, none)
+    icon_wifi = wifi
+    icon_excellent = excellent
+    icon_good = good
+    icon_ok = ok
+    icon_none = none
+end
+
+return widget