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wiki updated
[etc/awesome.git] / widgets / base.lua
index 4f28e07bae46777f6733df0257463e6a80a727ff..cd84e361220f79f2d24c98d3a1e5fe198437ddce 100644 (file)
@@ -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("*all")
-        f:close()
-        widget = base.widget
-        settings()
+        output = read_pipe(cmd)
+        if output ~= base.prev then
+            widget = base.widget
+            settings()
+            base.prev = output
+        end
     end
 
     newtimer(cmd, timeout, base.update)
     end
 
     newtimer(cmd, timeout, base.update)