From ebd1186c5f84dd6f705447b1707079f186ea0a47 Mon Sep 17 00:00:00 2001
From: Anton Khorev <tony29@yandex.ru>
Date: Mon, 17 Mar 2025 02:07:50 +0300
Subject: [PATCH] Scroll to first/last changeset in history list if
 before/after param is given

---
 app/assets/javascripts/index/history.js | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/app/assets/javascripts/index/history.js b/app/assets/javascripts/index/history.js
index 372bf04f5..d37f96f06 100644
--- a/app/assets/javascripts/index/history.js
+++ b/app/assets/javascripts/index/history.js
@@ -159,6 +159,16 @@ OSM.History = function (map) {
       .then(function (html) {
         displayFirstChangesets(html);
         enableChangesetIntersectionObserver();
+
+        if (params.has("before")) {
+          const [firstItem] = $("#sidebar_content .changesets ol").children().first();
+          firstItem?.scrollIntoView();
+        }
+        if (params.has("after")) {
+          const [lastItem] = $("#sidebar_content .changesets ol").children().last();
+          lastItem?.scrollIntoView(false);
+        }
+
         updateMap();
       });
   }
-- 
2.39.5