From 96f7e6adb9a69aa1d39a17d7332b2dcc625bd543 Mon Sep 17 00:00:00 2001
From: sebastien <sebastien@nobelconnexion.fr>
Date: Tue, 15 Oct 2019 15:07:36 +0200
Subject: [PATCH] [BUGFIX] Prevent addCopyListener to add event on undefined
 button when preview option set to false

---
 lib/functions.js.php | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/lib/functions.js.php b/lib/functions.js.php
index 845da82..532787d 100644
--- a/lib/functions.js.php
+++ b/lib/functions.js.php
@@ -742,8 +742,10 @@ function copyLinkToClipboard(link_id) {
 }
 
 function addCopyListener(button_id, link_id) {
-    document.getElementById(button_id)
+    if(document.getElementById(button_id)){
+        document.getElementById(button_id)
             .addEventListener("click", function() {
                 copyLinkToClipboard(link_id);});
+    }
 }
 // @license-end
-- 
2.34.1