From af77859c21817643bec3690ce15d1ac24ddb13a4 Mon Sep 17 00:00:00 2001
From: Benjamin Berg <benjamin@sipsolutions.net>
Date: Mon, 08 Oct 2007 11:54:27 +0000
Subject: Don't fail to expose if there is no invoker.

---
diff --git a/sugar/graphics/palette.py b/sugar/graphics/palette.py
index aaf6f6a..70cf453 100644
--- a/sugar/graphics/palette.py
+++ b/sugar/graphics/palette.py
@@ -257,7 +257,7 @@ class Palette(gtk.Window):
 
     def do_expose_event(self, event):
         # We want to draw a border with a beautiful gap
-        if self._invoker.has_rectangle_gap():
+        if self._invoker is not None and self._invoker.has_rectangle_gap():
             invoker = self._invoker.get_rect()
             palette = self.get_rect()
 
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