#198: correct logic

[etc/awesome.git] / widgets / base.lua

diff --git a/widgets/base.lua b/widgets/base.lua
index 6b808b7fc066d27b8fc607ab213deb2b22bee7a8..e1ce297f93b303938c3c33cb1b6dbdc5f2d6223f 100644 (file)
--- a/widgets/base.lua
+++ b/widgets/base.lua
@@ -7,12 +7,13 @@
 --]]
 
 local newtimer     = require("lain.helpers").newtimer
 --]]
 
 local newtimer     = require("lain.helpers").newtimer

+local read_pipe    = require("lain.helpers").read_pipe
+

 local wibox        = require("wibox")
 
 local wibox        = require("wibox")
 

-local io           = io

 local setmetatable = setmetatable
 
 local setmetatable = setmetatable
 

--- Basic template for custom widgets 
+-- Basic template for custom widgets

 -- lain.widgets.base
 
 local function worker(args)
 -- lain.widgets.base
 
 local function worker(args)


@@ -25,11 +26,12 @@ local function worker(args)
     base.widget = wibox.widget.textbox('')
 
     function base.update()
     base.widget = wibox.widget.textbox('')
 
     function base.update()

-        local f = assert(io.popen(cmd))
-        output = f:read("*a")
-        f:close()
-        widget = base.widget
-        settings()
+        if output ~= base.prev then
+            output = read_pipe(cmd)
+            widget = base.widget
+            settings()
+            base.prev = output
+        end

     end
 
     newtimer(cmd, timeout, base.update)
     end
 
     newtimer(cmd, timeout, base.update)