persist undo/redo stack per html document

Signed-off-by: Ananya Sen <Ananya.Sen@motorola.com>

1 files changed, 3 insertions, 3 deletions

diff --git a/js/models/color-model.js b/js/models/color-model.js
index 2c86422f..d3618c3e 100755
--- a/js/models/color-model.js
+++ b/js/models/color-model.js
@@ -265,7 +265,7 @@ exports.ColorModel = Montage.create(Component, {
                         ////////////////////////////////////////////////////////
                         case 'rgb':
                                 //Checking for match of previous (RGB)
-                                if (color.r !== this.rgb.r && color.g !== this.rgb.g && color.b !== this.rgb.b) {
+                                if (color && color.r !== this.rgb.r && color.g !== this.rgb.g && color.b !== this.rgb.b) {
                                         //Setting value and breaking out of function
                                         this.rgb = color;
                                         return;
@@ -279,7 +279,7 @@ exports.ColorModel = Montage.create(Component, {
                         ////////////////////////////////////////////////////////
                         case 'hsv':
                                 //Checking for match of previous (HSV)
-                                if (color.h !== this.hsv.h && color.s !== this.hsv.s && color.v !== this.hsv.v) {
+                                if (color && color.h !== this.hsv.h && color.s !== this.hsv.s && color.v !== this.hsv.v) {
                                         //Setting value and breaking out of function
                                         this.hsv = color;
                                         return;
@@ -293,7 +293,7 @@ exports.ColorModel = Montage.create(Component, {
                         ////////////////////////////////////////////////////////
                         case 'hsl':
                                 //Checking for match of previous (HSV)
-                                if (color.h !== this.hsl.h && color.s !== this.hsl.s && color.l !== this.hsl.l) {
+                                if (color && color.h !== this.hsl.h && color.s !== this.hsl.s && color.l !== this.hsl.l) {
                                         //Setting value and breaking out of function
                                         this.hsl = color;
                                         return;