From e3c66bdf04d414757fb4bee00995cfb770eb89a4 Mon Sep 17 00:00:00 2001
From: ljm42 <larry_meaney@iname.com>
Date: Thu, 21 Jan 2021 13:13:31 -0800
Subject: [PATCH] SysDevs - warn if leave page without saving

---
 plugins/dynamix/SysDevs.page | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/plugins/dynamix/SysDevs.page b/plugins/dynamix/SysDevs.page
index 54d4ef0df..0e55d10d0 100644
--- a/plugins/dynamix/SysDevs.page
+++ b/plugins/dynamix/SysDevs.page
@@ -4,8 +4,8 @@ Icon="icon-hardware"
 Tag="server"
 ---
 <?PHP
-/* Copyright 2005-2020, Lime Technology
- * Copyright 2012-2020, Bergware International.
+/* Copyright 2005-2021, Lime Technology
+ * Copyright 2012-2021, Bergware International.
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License version 2,
@@ -22,6 +22,10 @@ table tr td{padding:0 0 3px 0;margin:0}
 table tr td.thin{line-height:8px;height:8px}
 </style>
 <script>
+$(window).bind('beforeunload',function(e){
+  // warn user if they leave the page with unsaved changes
+  if (!$('#applycfg').prop('disabled')) return "You have unsaved changes";
+});
 $(function(){
   $('#t1').load('/webGui/include/SysDevs.php',{table:'t1'});
   $('#t2').load('/webGui/include/SysDevs.php',{table:'t2'});
@@ -49,6 +53,7 @@ function applyCfg() {
       removeRebootNotice(message);
       document.getElementById("warning").innerHTML = "<b>_(No changes)_.</b>";
     }
+    $("#applycfg").attr("disabled",true);
   });
 }
 </script>