awful.sn: add

Signed-off-by: Julien Danjou <julien@danjou.info>

lib/awful/init.lua.in

@@ -18,6 +18,7 @@ require("awful.widget")
 require("awful.menu")
 require("awful.mouse")
 require("awful.remote")
+require("awful.startup_notification")
 
 --- AWesome Functions very UsefuL
 module("awful")

lib/awful/startup_notification.lua.in

@@ -0,0 +1,57 @@
+---------------------------------------------------------------------------
+-- @author Julien Danjou <julien@danjou.info>
+-- @copyright 2009 Julien Danjou
+-- @release @AWESOME_VERSION@
+---------------------------------------------------------------------------
+
+-- Grab environment we need
+local hooks = require("awful.hooks")
+local ipairs = ipairs
+local table = table
+local capi =
+{
+    root = root
+}
+
+--- Startup notification module for awful
+module("awful.startup_notification")
+
+local app_starting = {}
+
+cursor_waiting = "watch"
+
+local function update_cursor()
+    if #app_starting > 0 then
+        capi.root.cursor(cursor_waiting)
+    else
+        capi.root.cursor("left_ptr")
+    end
+end
+
+local function unregister_event(event_id)
+    for k, v in ipairs(app_starting) do
+        if v == event_id then
+            table.remove(app_starting, k)
+            update_cursor()
+            break
+        end
+    end
+end
+
+local function register_event(event_id)
+    table.insert(app_starting, event_id)
+    update_cursor()
+end
+
+local function startup_hook(event)
+    if event.type == "initiated" then
+        register_event(event.id)
+    elseif event.type == "canceled"
+        or event.type == "completed" then
+        unregister_event(event.id)
+    end
+end
+
+hooks.startup_notification.register(startup_hook)
+
+-- vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=80