From e70a8ed51aabcc07ae1f44baa6cf60df83f83087 Mon Sep 17 00:00:00 2001
From: Victor Silva <victsou@gmail.com>
Date: Thu, 21 Apr 2016 13:10:40 -0300
Subject: [PATCH] Add willDestroy to service to remove onblur and onfocus
 handlers

---
 addon/services/visible.js | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/addon/services/visible.js b/addon/services/visible.js
index bbd7016..59d5e87 100644
--- a/addon/services/visible.js
+++ b/addon/services/visible.js
@@ -48,5 +48,9 @@ export default Ember.Service.extend({
     };
     window.onfocus = boundCallback;
   },
+  willDestroy: function() {
+    window.onblur = () => {};
+    window.onfocus = () => {};
+  }
 
 });