Add auto suspend to battery widget

init.lua

@@ -64,7 +64,7 @@ local widget = { -- for the widget that awesome draws
 }
 local updater = {} -- for updating the widget
 local window = {} -- for conky's own window
-local public = {} -- public interface
+local public = { config = {} } -- public interface
 
 
 -- default conky client properties
@@ -225,7 +225,8 @@ end
 
 function widget.maybe_require(t_or_str) -- {{{2
  if type(t_or_str) == "string" then
- t_or_str = require("conky/widgets/" .. t_or_str)
+ local settings = public.config[t_or_str] or {}
+ t_or_str = require("conky/widgets/" .. t_or_str)(settings)
  end
  return t_or_str
 end
@@ -366,6 +367,4 @@ function updater.add_string(conkystr) -- {{{2
  end
 end
 
--- RETURN PUBLIC INTERFACE --- {{{1
-
-return public
+return public --- {{{1

widgets/battery.lua

@@ -1,4 +1,11 @@
 local beautiful = require("beautiful")
+local naughty = require("naughty")
+local awful = require("awful")
+
+local settings = {
+ suspend_time = 300,
+ suspend_cmd = "sudo /usr/sbin/pm-suspend-hybrid",
+}
 
 local function htime(seconds)
  local hours = math.floor(tonumber(seconds) / 3600)
@@ -9,50 +16,76 @@ local function round(perc)
  return string.format("%03d", math.floor(string.sub(perc, 1, -2) / 20) * 20)
 end
 
+local suspend_initiated = false
+
+local function suspend()
+ if suspend_initiated then
+ awful.spawn(settings.suspend_cmd)
+ end
+end
+
+local function maybe_suspend(time_left)
+ if suspend_initiated or time_left > settings.suspend_time then
+ return
+ end
+
+ suspend_initiated = true
+ naughty.notify({
+ title = "Battery Empty!",
+ text = "Suspending to disk in 1 minute.\n\n" ..
+ "Attach power to cancel.\n\n" ..
+ "Close this notification to suspend immediately",
+ timeout = 60,
+ destroy = suspend
+ })
+end
+
 local current_icon = nil
 
-return {
- icon = beautiful["icon-battery-caution"],
- conky = "${battery_short} ${battery_time}",
- conkybox = { forced_width = 30, align = "center" },
- updater = function(update, textbox, iconbox, _)
-
- local iter = string.gmatch(update, "%S+")
- local state, perc, seconds = iter(), iter(), iter()
-
- -- print("u:", update)
- -- print("s:", state)
- -- print("%:", perc)
- -- print("sec:", seconds)
-
- local icon = "icon-battery-"
- local vis = false
- local time = nil
-
- if state == "F" then -- full
- icon = icon .. "100-charging"
- elseif state == "E" then -- empty
- icon = icon .. "000"
- elseif state == "D" then -- discharging
- vis = true
- time = htime(seconds)
- icon = icon .. round(perc)
- elseif state == "C" then -- charging
- vis = true
- time = htime(seconds)
- icon = icon .. round(perc) .. "-charging"
- else
- icon = icon .. "caution"
- end
+return function(user_settings)
+ for k,v in pairs(user_settings) do
+ settings[k] = v
+ end
+
+ return {
+ icon = beautiful["icon-battery-caution"],
+ conky = "${battery_short} ${battery_time}",
+ conkybox = { forced_width = 30, align = "center" },
+ updater = function(update, textbox, iconbox, _)
+
+ local iter = string.gmatch(update, "%S+")
+ local state, perc, seconds = iter(), iter(), iter()
 
- -- print("text:", t)
- -- print("icon:", i)
+ local icon = "icon-battery-"
+ local vis = false
+ local time = nil
 
- if time then textbox:set_text(time) end
- textbox.visible = vis
- if icon ~= current_icon then
- iconbox:set_image(beautiful[icon] or beautiful["icon-battery-caution"])
- current_icon = icon
+ if state == "F" then -- full
+ icon = icon .. "100-charging"
+ suspend_initiated = false
+ elseif state == "E" then -- empty
+ icon = icon .. "000"
+ maybe_suspend(seconds)
+ elseif state == "D" then -- discharging
+ vis = true
+ time = htime(seconds)
+ icon = icon .. round(perc)
+ maybe_suspend(seconds)
+ elseif state == "C" then -- charging
+ vis = true
+ suspend_initiated = false
+ time = htime(seconds)
+ icon = icon .. round(perc) .. "-charging"
+ else
+ icon = icon .. "caution"
+ end
+
+ if time then textbox:set_text(time) end
+ textbox.visible = vis
+ if icon ~= current_icon then
+ iconbox:set_image(beautiful[icon] or beautiful["icon-battery-caution"])
+ current_icon = icon
+ end
  end
- end
-}
+ }
+end