From 460abb7c747208fd9ea158ea26b953aff16a9c80 Mon Sep 17 00:00:00 2001
From: vakrilov <alexander.vakrilov@telerik.com>
Date: Fri, 10 Jul 2015 11:52:30 +0300
Subject: [PATCH] Null check

---
 ui/styling/background-common.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/ui/styling/background-common.ts b/ui/styling/background-common.ts
index 7521526b2..63c284e75 100644
--- a/ui/styling/background-common.ts
+++ b/ui/styling/background-common.ts
@@ -165,7 +165,7 @@ export class Background implements dts.Background {
     }
 
     public isEmpty(): boolean {
-        return types.isUndefined(this.image) && types.isUndefined(this.color);
+        return types.isNullOrUndefined(this.image) && types.isNullOrUndefined(this.color);
     }
 
     public static equals(value1: Background, value2: Background): boolean {