From 7e44bbc0dca54e643b5eb8717930504ba1f1753e Mon Sep 17 00:00:00 2001
From: vakrilov <alexander.vakrilov@telerik.com>
Date: Fri, 26 Jun 2015 16:44:17 +0300
Subject: [PATCH] Fix: color and font comparers

---
 color/color-common.ts     |  6 ++++++
 ui/styling/font-common.ts | 10 ++++++++++
 2 files changed, 16 insertions(+)

diff --git a/color/color-common.ts b/color/color-common.ts
index 0de2a470c..2772a5515 100644
--- a/color/color-common.ts
+++ b/color/color-common.ts
@@ -94,6 +94,12 @@ export class Color implements definition.Color {
     }
 
     public static equals(value1: definition.Color, value2: definition.Color): boolean {
+        // both values are falsy
+        if (!value1 && !value2) {
+            return true;
+        }
+
+        // only one is falsy
         if (!value1 || !value2) {
             return false;
         }
diff --git a/ui/styling/font-common.ts b/ui/styling/font-common.ts
index 20454269f..a5c9604e6 100644
--- a/ui/styling/font-common.ts
+++ b/ui/styling/font-common.ts
@@ -84,6 +84,16 @@ export class Font implements definitios.Font {
     }
 
     public static equals(value1: Font, value2: Font): boolean {
+        // both values are falsy
+        if (!value1 && !value2) {
+            return true;
+        }
+
+        // only one is falsy
+        if (!value1 || !value2) {
+            return false;
+        }
+
         return value1.fontFamily === value2.fontFamily &&
             value1.fontSize === value2.fontSize &&
             value1.fontStyle === value2.fontStyle &&