@hlfan commented on this pull request.
> + changesetIntersectionObserver = new IntersectionObserver((entries) => {
+ if (ignoreIntersectionEvents) {
+ ignoreIntersectionEvents = false;
+ return;
+ }
+
+ let closestTargetToTop,
+ closestDistanceToTop = Infinity,
+ closestTargetToBottom,
+ closestDistanceToBottom = Infinity;
+
+ for (const entry of entries) {
+ if (entry.isIntersecting) continue;
+
+ const distanceToTop = entry.rootBounds.top -
entry.boundingClientRect.bottom;
+ const distanceToBottom = entry.boundingClientRect.top -
entry.rootBounds.bottom;
+ if (distanceToTop >= 0 && distanceToTop < closestDistanceToTop) {
+ closestDistanceToTop = distanceToTop;
+ closestTargetToTop = entry.target;
+ }
+ if (distanceToBottom >= 0 && distanceToBottom <=
closestDistanceToBottom) {
+ closestDistanceToBottom = distanceToBottom;
+ closestTargetToBottom = entry.target;
+ }
+ }
+
+ if (closestTargetToTop && closestDistanceToTop <
closestDistanceToBottom) {
+ const id = $(closestTargetToTop).data("changeset")?.id;
+ if (id) {
+ OSM.router.replace(location.pathname + "?" + new URLSearchParams({
before: id }) + location.hash);
+ }
+ } else if (closestTargetToBottom) {
+ const id = $(closestTargetToBottom).data("changeset")?.id;
+ if (id) {
+ OSM.router.replace(location.pathname + "?" + new URLSearchParams({
after: id }) + location.hash);
+ }
+ }
+ }, { root: $("#sidebar")[0] });
You can also do that in the callback?
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