From 1fd0c26e1dcfe23faa40aad4c1ae6b30f46a812b Mon Sep 17 00:00:00 2001
From: Rob Garrison <wowmotty@gmail.com>
Date: Fri, 22 Dec 2017 22:18:40 -0600
Subject: [PATCH] MessageBox: Add focus to OK button

---
 msgbox/msgbox.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/msgbox/msgbox.js b/msgbox/msgbox.js
index a9470c46..3f40fdaa 100644
--- a/msgbox/msgbox.js
+++ b/msgbox/msgbox.js
@@ -123,7 +123,7 @@ function messageBox({
 
   function moveFocus(dir) {
     const elements = [...messageBox.element.getElementsByTagName('*')];
-    const activeIndex = elements.indexOf(document.activeElement);
+    const activeIndex = Math.max(0, elements.indexOf(document.activeElement));
     const num = elements.length;
     for (let i = 1; i < num; i++) {
       const elementIndex = (activeIndex + i * dir + num) % num;