[gnome-music/wip/merge: 103/343] toolbar: allow emitting signals

[Ignacio Casal Quinteiro <icq src gnome org>]

commit eb674cb09860473795bad93cdc63336e9db6a72f
Author: Vadim Rutkovsky <vrutkovs redhat com>
Date:   Mon Jul 15 16:16:16 2013 +0200

    toolbar: allow emitting signals

 gnomemusic/toolbar.py |    9 +++++++--
 1 files changed, 7 insertions(+), 2 deletions(-)
---
diff --git a/gnomemusic/toolbar.py b/gnomemusic/toolbar.py
index 6479186..178a790 100644
--- a/gnomemusic/toolbar.py
+++ b/gnomemusic/toolbar.py
@@ -1,4 +1,4 @@
-from gi.repository import Gtk
+from gi.repository import Gtk, GObject
 
 
 class ToolbarState:
@@ -9,10 +9,15 @@ class ToolbarState:
     SONGS = 4
 
 
-class Toolbar():
+class Toolbar(GObject.GObject):
+
+    __gsignals__ = {
+        'state-changed': (GObject.SIGNAL_RUN_FIRST, None, ())
+    }
     _selectionMode = None
 
     def __init__(self):
+        GObject.GObject.__init__(self)
         self._stackSwitcher = Gtk.StackSwitcher()
         self._ui = Gtk.Builder()
         self._ui.add_from_resource('/org/gnome/music/Headerbar.ui')