From 866bd7ca62b61dd6b3bcd33989a3eb06002842b7 Mon Sep 17 00:00:00 2001
From: Dustin Falgout <dustin@falgout.us>
Date: Sat, 6 Jan 2018 23:59:01 -0600
Subject: [PATCH] Return the fallback background from
 BackgroundManager.random_bg() when we don't have any backgrounds to choose
 from.

---
 themes/default/js/greeter.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/themes/default/js/greeter.js b/themes/default/js/greeter.js
index 2a3aac8..76df009 100644
--- a/themes/default/js/greeter.js
+++ b/themes/default/js/greeter.js
@@ -49,7 +49,7 @@ function is_empty( value ) {
 		return value.length === 0;
 	}
 
-	return ['', null, 'null', undefined, 'undefined'].includes( value );
+	return ['', null, 'null', undefined, 'undefined', false, 'false'].includes( value );
 }
 
 
@@ -288,7 +288,7 @@ class BackgroundManager {
 		let random_bg;
 
 		if ( is_empty( _config.background_images ) ) {
-			return '';
+			return 'img/fallback_bg.jpg';
 		}
 
 		random_bg = Math.floor( Math.random() * _config.background_images.length );