From fd34b9dc1e6a1b932a139b0826491d5f7a9856d1 Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Sat, 17 Aug 2013 17:23:30 +0530
Subject: [PATCH] Fix breakage on OS X machines with system style

---
 src/calibre/gui2/init.py | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/src/calibre/gui2/init.py b/src/calibre/gui2/init.py
index 59bb7718b2..de0a58d7bb 100644
--- a/src/calibre/gui2/init.py
+++ b/src/calibre/gui2/init.py
@@ -343,7 +343,15 @@ class VLTabs(QTabBar):  # {{{
                 all_idx = i
         self.setCurrentIndex(all_idx if current_idx is None else current_idx)
         self.currentChanged.connect(self.tab_changed)
-        self.tabButton(all_idx, self.RightSide).setVisible(False)
+        try:
+            self.tabButton(all_idx, self.RightSide).setVisible(False)
+        except AttributeError:
+            try:
+                self.tabButton(all_idx, self.LeftSide).setVisible(False)
+            except AttributeError:
+                # On some OS X machines (using native style) the tab button is
+                # on the left
+                pass
 
     def update_current(self):
         self.rebuild()