From 484687d002415b0f2484ca1e590c83f40b0baea3 Mon Sep 17 00:00:00 2001
From: Fabrice Mouhartem <fabrice.mouhartem@xwiki.com>
Date: Tue, 23 Jan 2024 15:07:22 +0100
Subject: [PATCH] Set constant difference between start and end dates in time
 ranges

---
 www/lib/calendar/date-picker.js | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/www/lib/calendar/date-picker.js b/www/lib/calendar/date-picker.js
index 887384a6b..e0d96b112 100644
--- a/www/lib/calendar/date-picker.js
+++ b/www/lib/calendar/date-picker.js
@@ -30,17 +30,22 @@ define([
             enableTime: true,
             time_24hr: is24h,
             dateFormat: dateFormat,
-            minDate: start.date
+            minDate: start.date,
+            onChange: function () {
+                    duration = parseDate(e.value) - parseDate(s.value);
+            }
         });
         endPickr.setDate(end.date);
 
         var s = $(start.input)[0];
+        var duration = end.date - start.date;
         var startPickr = Flatpickr(s, {
             enableTime: true,
             time_24hr: is24h,
             dateFormat: dateFormat,
             onChange: function () {
                 endPickr.set('minDate', parseDate(s.value));
+                endPickr.setDate(parseDate(s.value).getTime() + duration);
             }
         });
         startPickr.setDate(start.date);