[awesome] add bluetooth widget (replaces blueman)

home/.config/awesome/rc.lua

@@ -203,6 +203,7 @@ awful.screen.connect_for_each_screen(function(s)
         { -- Right widgets
             layout = wibox.layout.fixed.horizontal,
             wibox.widget.systray(),
+            widgets.bluetooth,
             widgets.netdown_icon,
             widgets.netdown.widget,
             widgets.netup_icon,
@@ -514,7 +515,6 @@ client.connect_signal("unfocus", function(c) c.border_color = beautiful.border_n
 
 awful.util.spawn({"pulseaudio"})
 awful.util.spawn({"nm-applet"})
-awful.util.spawn({"blueman-applet"})
 awful.util.spawn({"ibus-daemon", "-r", "--xim"})
 awful.util.spawn({"/usr/lib/policykit-1-gnome/polkit-gnome-authentication-agent-1"})
 awful.util.spawn_with_shell("~/bin/spawn-once pasystray")

home/.config/awesome/widgets.lua

@@ -1,6 +1,9 @@
+local awful = require("awful")
 local wibox = require("wibox")
+local table = require("gears.table")
 
 local lain = require("lain")
+local helpers = require("lain.helpers")
 local markup = lain.util.markup
 
 local theme = require("theme")
@@ -62,4 +65,49 @@ widgets.bat = lain.widget.bat({
     end
 })
 
+widgets.bluetooth = wibox.widget.imagebox(iconsdir .. "bluetooth-on.png")
+widgets.bluetooth.pass_state = function(callback)
+    helpers.async_with_shell("/sbin/rfkill -n -o SOFT list bluetooth|uniq", function(state)
+        callback(state:gsub("^%s*(.-)%s*$", "%1"))
+    end)
+end
+
+widgets.bluetooth.update = function()
+    widgets.bluetooth.pass_state(function(state)
+        if state == "blocked" then
+            widgets.bluetooth:set_image(iconsdir .. "bluetooth-off.png")
+        else
+            helpers.async_with_shell("for device in $(bluetoothctl devices|cut -d' ' -f 2);do bluetoothctl info $device|grep 'Connected: yes';done|wc -l", function(connected_devices)
+                if tonumber(connected_devices) > 0 then
+                    widgets.bluetooth:set_image(iconsdir .. "bluetooth-active.png")
+                else
+                    widgets.bluetooth:set_image(iconsdir .. "bluetooth-on.png")
+                end
+            end)
+        end
+    end)
+end
+
+widgets.bluetooth.toggle = function()
+    widgets.bluetooth.pass_state(function(state)
+        if state == "blocked" then
+            awful.spawn.spawn({ "/sbin/rfkill", "unblock", "bluetooth" })
+        else
+            awful.spawn.spawn({ "/sbin/rfkill", "block", "bluetooth" })
+        end
+        widgets.bluetooth.update()
+    end)
+end
+
+widgets.bluetooth:buttons(
+    table.join(
+        awful.button({ }, 1, widgets.bluetooth.toggle),
+        awful.button({ }, 3, function()
+            awful.spawn.spawn({ "blueman-manager" })
+        end)
+    )
+)
+
+helpers.newtimer("bluetooth", 10, widgets.bluetooth.update)
+
 return widgets