From c10a94c0cb1112c342211721add488e540fcd410 Mon Sep 17 00:00:00 2001
From: Emmanuel Lepage Vallee <elv1313@gmail.com>
Date: Sun, 16 Mar 2014 23:46:23 -0400
Subject: [PATCH] Use 'state::changed' instead of hardcoded calls to refresh
 (issue #18)

---
 item/init.lua              | 6 ++++++
 item/layout/horizontal.lua | 1 +
 theme/init.lua             | 4 ++--
 3 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/item/init.lua b/item/init.lua
index 4b4854d..e93ba0e 100644
--- a/item/init.lua
+++ b/item/init.lua
@@ -160,6 +160,12 @@ local function new_item(data,args)
     data.item_style(item,{})
     data._current_item = item
   end
+
+  -- Listen to signals
+  item:connect_signal("state::changed",function()
+    item:style()
+  end)
+
   return item
 end
 
diff --git a/item/layout/horizontal.lua b/item/layout/horizontal.lua
index b1d2e41..1f9e80a 100644
--- a/item/layout/horizontal.lua
+++ b/item/layout/horizontal.lua
@@ -40,6 +40,7 @@ end
 -- Apply icon transformation
 function module.set_icon(self,image)
   if self._data.icon_transformation then
+    self._item._original_icon = image
     image = self._data.icon_transformation(image,self._data,self._item)
   end
   wibox.widget.imagebox.set_image(self,image)
diff --git a/theme/init.lua b/theme/init.lua
index 8323b0b..2b6a264 100644
--- a/theme/init.lua
+++ b/theme/init.lua
@@ -23,13 +23,13 @@ local function change_data(tab, key,value)
     if tab._item._internal.text_w and tab._item._internal.text_w.cache then
       tab._item._internal.text_w.cache = {}
     end
-    tab._item:style()
+    tab._item:emit_signal("state::changed")
   elseif value and (rawget(tab,"_current_key") or math.huge) > key then
     rawset(tab,"_current_key",key)
     if tab._item._internal.text_w and tab._item._internal.text_w.cache then
       tab._item._internal.text_w.cache = {}
     end
-    tab._item:style()
+    tab._item:emit_signal("state::changed")
   end
   tab._real_table[key] = value
 end