From f149e115d5eff3c5de61f97f2731bc0ddf58e179 Mon Sep 17 00:00:00 2001
From: Mike Fix <mrfix84@gmail.com>
Date: Thu, 30 Aug 2018 20:26:20 -0700
Subject: [PATCH] prefix postMessage id with carbon:

---
 pages/embed.js | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/pages/embed.js b/pages/embed.js
index 21e602b..4f40b47 100644
--- a/pages/embed.js
+++ b/pages/embed.js
@@ -61,10 +61,11 @@ class Embed extends React.Component {
   updateCode = code => {
     this.setState({ code })
 
-    if (isInIFrame(window)) {
-      window.parent.window.parent.postMessage(
+    const iFrame = isInIFrame(window)
+    if (iFrame) {
+      iFrame.postMessage(
         {
-          id: this.state.id || 'carbon',
+          id: this.state.id ? `carbon:${this.state.id}` : 'carbon',
           code
         },
         '*'