From 348d689243e100f43ec25b6fb08387372d5c75e6 Mon Sep 17 00:00:00 2001
From: Antoine Mercadal <antoine.mercadal@gmail.com>
Date: Wed, 23 Jan 2013 10:45:09 -0800
Subject: [PATCH] If the targetView of attachedWindow has no more window, close
 the popover instead of trying to reposition it

---
 AppKit/_CPAttachedWindow.j | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/AppKit/_CPAttachedWindow.j b/AppKit/_CPAttachedWindow.j
index cb86bad55..ceba344e3 100644
--- a/AppKit/_CPAttachedWindow.j
+++ b/AppKit/_CPAttachedWindow.j
@@ -189,6 +189,12 @@ var _CPAttachedWindow_attachedWindowShouldClose_    = 1 << 0,
         // TODO: don't recompute everything, just compute the move offset
         var edge = [_windowView preferredEdge];
 
+        if (![_targetView window])
+        {
+            [self _close]
+            return;
+        }
+
         [self positionRelativeToRect:nil ofView:_targetView preferredEdge:edge];
     }
 }