From 5472786b19ab5048042965f66975af361e8946e7 Mon Sep 17 00:00:00 2001
From: Ilya Grigorik <ilya@igvita.com>
Date: Tue, 4 Jul 2017 23:38:15 +0200
Subject: [PATCH] add logic and check for init-once

closes #230, kudos to @xftroxgpx for the detective work and patch.
---
 inject.js | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/inject.js b/inject.js
index d3d27a1..7c5dac3 100644
--- a/inject.js
+++ b/inject.js
@@ -195,6 +195,13 @@ chrome.extension.sendMessage({}, function(response) {
   }
 
   function initializeNow(document) {
+      // in theory, this should only run once, in practice..
+      // that's not guaranteed, hence we enforce own init-once.
+      if (document.body.classList.contains('vsc-initialized')) {
+        return;
+      }
+      document.body.classList.add('vsc-initialized');
+
       if (document === window.document) {
         defineVideoController();
       } else {