From aeea9b56ac020283062ac44f58df4c292174a897 Mon Sep 17 00:00:00 2001
From: David Resseguie <david@resseguie.com>
Date: Tue, 10 Feb 2015 11:39:06 -0500
Subject: [PATCH] avoid negative countdown

If the countdown is already at zero, don't decrement the time value. It
was previously causing negative numbers to be displayed on the
countdown clock (00:00:-4) if a start event was received after it had
reached zero.
---
 models/stopwatch.js | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/models/stopwatch.js b/models/stopwatch.js
index 29ace51..a4a64b8 100644
--- a/models/stopwatch.js
+++ b/models/stopwatch.js
@@ -60,7 +60,9 @@ Stopwatch.prototype.reset = function() {
 };
 
 Stopwatch.prototype.onTick = function() {
-    this.time -= this.second;
+    if(this.time > 0) {
+        this.time -= this.second;
+    }
 
     var formattedTime = this.formatTime(this.time);
     this.emit('tick:stopwatch', formattedTime);