From: Christian Heller <c.heller@plomlompom.de>
Date: Sun, 27 Apr 2025 16:21:26 +0000 (+0200)
Subject: On taint, also prevent user from closing/reloading window without confirmation.
X-Git-Url: https://plomlompom.com/repos/%22https:/validator.w3.org/do_day?a=commitdiff_plain;h=9320d8ad546ff2cfe96866dd0711be278afe1ad5;p=ledgplom

On taint, also prevent user from closing/reloading window without confirmation.
---

diff --git a/src/templates/_macros.tmpl b/src/templates/_macros.tmpl
index dc25e0b..05dc359 100644
--- a/src/templates/_macros.tmpl
+++ b/src/templates/_macros.tmpl
@@ -128,6 +128,11 @@ function taint() {
     Array.from(document.getElementsByClassName('disable_on_change')).forEach((el) => {
         recursive_span_disable(el);
     });
+    // try to catch user closing or reloading window
+    window.addEventListener('beforeunload', function(e) {
+        e.preventDefault();
+        e.returnValue = true; }
+    );
     // remove oninput handlers no longer needed (since we only ever go one way)
     Array.from(document.querySelectorAll('*')
         ).filter(el => (el.oninput !== null)