92 lines
3.4 KiB
Lua
92 lines
3.4 KiB
Lua
---------------------------------------------------------------------------
|
|
--- Watch widget.
|
|
-- Here is an example of simple temperature widget which will update each 15
|
|
-- seconds implemented in two different ways.
|
|
-- The first, simpler one, will just display the return command output
|
|
-- (so output is stripped by shell commands).
|
|
-- In the other example `sensors` returns to the widget its full output
|
|
-- and it's trimmed in the widget callback function:
|
|
--
|
|
-- 211 mytextclock,
|
|
-- 212 wibox.widget.textbox(' | '),
|
|
-- 213 -- one way to do that:
|
|
-- 214 awful.widget.watch('bash -c "sensors | grep temp1"', 15),
|
|
-- 215 -- another way:
|
|
-- 216 awful.widget.watch('sensors', 15, function(widget, stdout)
|
|
-- 217 for line in stdout:gmatch("[^\r\n]+") do
|
|
-- 218 if line:match("temp1") then
|
|
-- 219 widget:set_text(line)
|
|
-- 220 return
|
|
-- 221 end
|
|
-- 222 end
|
|
-- 223 end),
|
|
-- 224 s.mylayoutbox,
|
|
--
|
|
-- 
|
|
--
|
|
-- @author Benjamin Petrenko
|
|
-- @author Yauheni Kirylau
|
|
-- @copyright 2015, 2016 Benjamin Petrenko, Yauheni Kirylau
|
|
-- @classmod awful.widget.watch
|
|
---------------------------------------------------------------------------
|
|
|
|
local setmetatable = setmetatable
|
|
local textbox = require("wibox.widget.textbox")
|
|
local timer = require("gears.timer")
|
|
local spawn = require("awful.spawn")
|
|
|
|
local watch = { mt = {} }
|
|
|
|
--- Create a textbox that shows the output of a command
|
|
-- and updates it at a given time interval.
|
|
--
|
|
-- @tparam string|table command The command.
|
|
--
|
|
-- @tparam[opt=5] integer timeout The time interval at which the textbox
|
|
-- will be updated.
|
|
--
|
|
-- @tparam[opt] function callback The function that will be called after
|
|
-- the command output will be received. it is shown in the textbox.
|
|
-- Defaults to:
|
|
-- function(widget, stdout, stderr, exitreason, exitcode)
|
|
-- widget:set_text(stdout)
|
|
-- end
|
|
-- @param callback.widget Base widget instance.
|
|
-- @tparam string callback.stdout Output on stdout.
|
|
-- @tparam string callback.stderr Output on stderr.
|
|
-- @tparam string callback.exitreason Exit Reason.
|
|
-- The reason can be "exit" or "signal".
|
|
-- @tparam integer callback.exitcode Exit code.
|
|
-- For "exit" reason it's the exit code.
|
|
-- For "signal" reason — the signal causing process termination.
|
|
--
|
|
-- @param[opt=wibox.widget.textbox()] base_widget Base widget.
|
|
--
|
|
-- @return The widget used by this watch
|
|
function watch.new(command, timeout, callback, base_widget)
|
|
timeout = timeout or 5
|
|
base_widget = base_widget or textbox()
|
|
callback = callback or function(widget, stdout, stderr, exitreason, exitcode) -- luacheck: no unused args
|
|
widget:set_text(stdout)
|
|
end
|
|
local t = timer { timeout = timeout }
|
|
t:connect_signal("timeout", function()
|
|
t:stop()
|
|
spawn.easy_async(command, function(stdout, stderr, exitreason, exitcode)
|
|
callback(base_widget, stdout, stderr, exitreason, exitcode)
|
|
t:again()
|
|
end)
|
|
end)
|
|
t:start()
|
|
t:emit_signal("timeout")
|
|
return base_widget
|
|
end
|
|
|
|
function watch.mt.__call(_, ...)
|
|
return watch.new(...)
|
|
end
|
|
|
|
return setmetatable(watch, watch.mt)
|
|
|
|
-- vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
|