From f2122de35a9bed7756207d679f9a83c68dcc4642 Mon Sep 17 00:00:00 2001
From: bootstraponline <code@bootstraponline.com>
Date: Thu, 5 Mar 2015 17:39:12 -0500
Subject: [PATCH] Don't crash when mainWindow is UIAElementNil

---
 lib/appium_lib/ios/helper.rb | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/lib/appium_lib/ios/helper.rb b/lib/appium_lib/ios/helper.rb
index d15fe6d5..7eba36a9 100644
--- a/lib/appium_lib/ios/helper.rb
+++ b/lib/appium_lib/ios/helper.rb
@@ -531,11 +531,13 @@ def _by_json opts
       # will be present.
       _validate_object opts[:name], opts[:label], opts[:value]
 
+      # note that mainWindow is sometimes nil so it's passed as a param
+      # $._elementOrElementsByType will validate that the window isn't nil
       element_or_elements_by_type = <<-JS
         (function() {
-        var opts = #{opts.to_json}
+        var opts = #{opts.to_json};
 
-        return $.mainWindow()._elementOrElementsByType(opts);
+        return $._elementOrElementsByType($.mainWindow(), opts);
         })();
       JS