From 6e4383281db26ea0b121f2ce412ffeb775ecdea7 Mon Sep 17 00:00:00 2001
From: Neil Deakin <neil@mozilla.com>
Date: Sun, 5 Dec 2010 17:10:45 -0500
Subject: [PATCH] Bug 606343, part 4, fix arrow position in rtl, r=dao,
 a=blocking

---
 toolkit/content/widgets/popup.xml | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/toolkit/content/widgets/popup.xml b/toolkit/content/widgets/popup.xml
index e73f32531e0e..8f33fbd501c4 100644
--- a/toolkit/content/widgets/popup.xml
+++ b/toolkit/content/widgets/popup.xml
@@ -324,7 +324,9 @@
             hideAnchor = true;
           }
           else {
-            arrowbox.pack = popupRect.left + popupRect.width / 2 < anchorRect.left ? "end" : "start";
+            let rtl = (window.getComputedStyle(this).direction == "rtl");
+            arrowbox.pack = (popupRect.left + popupRect.width / 2 < anchorRect.left) != rtl ?
+                              "end" : "start";
             if (vertPos == 1) {
               container.dir = "";
               anchorClass = "top";