]> git.madduck.net Git - etc/awesome.git/blob - widget/watch.lua

madduck's git repository

Every one of the projects in this repository is available at the canonical URL git://git.madduck.net/madduck/pub/<projectpath> — see each project's metadata for the exact URL.

All patches and comments are welcome. Please squash your changes to logical commits before using git-format-patch and git-send-email to patches@git.madduck.net. If you'd read over the Git project's submission guidelines and adhered to them, I'd be especially grateful.

SSH access, as well as push access can be individually arranged.

If you use my repositories frequently, consider adding the following snippet to ~/.gitconfig and using the third clone URL listed for each project:

[url "git://git.madduck.net/madduck/"]
  insteadOf = madduck:

55226b92cb20e43f762a5378d9891246ba52459a
[etc/awesome.git] / widget / watch.lua
1
2 --[[
3                                                   
4      Licensed under GNU General Public License v2 
5       * (c) 2014, Luke Bonham                     
6                                                   
7 --]]
8
9 local helpers      = require("lain.helpers")
10 local textbox      = require("wibox.widget.textbox")
11 local setmetatable = setmetatable
12
13 -- Template for asynchronous watcher widgets
14 -- lain.widget.watch
15
16 local function worker(args)
17     local watch     = {}
18     local args      = args or {}
19     local timeout   = args.timeout or 5
20     local nostart   = args.nostart or false
21     local stoppable = args.stoppable or false
22     local cmd       = args.cmd
23     local settings  = args.settings or function() widget:set_text(output) end
24
25     watch.widget = args.widget or textbox()
26
27     function watch.update()
28         helpers.async(cmd, function(f)
29             output = f
30             if output ~= watch.prev then
31                 widget = watch.widget
32                 settings()
33                 watch.prev = output
34             end
35         end)
36     end
37
38     watch.timer = helpers.newtimer(cmd, timeout, watch.update, nostart, stoppable)
39
40     return watch
41 end
42
43 return setmetatable({}, { __call = function(_, ...) return worker(...) end })