From 5efc89d514c3a16ebf25715a3b1f3c5326dbec99 Mon Sep 17 00:00:00 2001
From: Nick O'Leary <nick.oleary@gmail.com>
Date: Sun, 15 Mar 2015 23:48:02 +0000
Subject: [PATCH] Warn when leaving editor with undeployed changes

---
 public/red/ui/deploy.js | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/public/red/ui/deploy.js b/public/red/ui/deploy.js
index c76b31e8a..b18dfb7ee 100644
--- a/public/red/ui/deploy.js
+++ b/public/red/ui/deploy.js
@@ -72,12 +72,15 @@ RED.deploy = (function() {
         
         RED.nodes.on('change',function(state) {
             if (state.dirty) {
+                window.onbeforeunload = function() {
+                    return "You have undeploy changes.\n\nLeaving this page will lose these changes.";
+                }
                 $("#btn-deploy").removeClass("disabled");
             } else {
+                window.onbeforeunload = null;
                 $("#btn-deploy").addClass("disabled");
             }
         });
-        
     }
     
     function save(force) {