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improve selected section logic for edge cases

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This commit is contained in:
Timothy Z. 2026-03-04 20:48:01 +02:00
parent df69e6eb18
commit 3d119db049
1 changed files with 22 additions and 8 deletions
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30
src/routes/Settings/Settings.tsx
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@ -41,13 +41,27 @@ const Settings = () => {
const updateSelectedSectionId = useCallback(() => {
const container = sectionsContainerRef.current;
for (const section of sections) {
const sectionContainer = section.ref.current;
if (sectionContainer && (sectionContainer.offsetTop + container!.offsetTop) < container!.scrollTop + 50) {
setSelectedSectionId(section.id);
}
if (!container) return;
const availableSections = sections.filter((section) => section.ref.current);
if (!availableSections.length) return;
const { scrollTop, clientHeight, scrollHeight, offsetTop } = container;
const isAtBottom = scrollTop + clientHeight >= scrollHeight - 10;
if (isAtBottom) {
setSelectedSectionId(availableSections[availableSections.length - 1].id);
return;
}
}, []);
const marker = scrollTop + 50;
const activeSection = availableSections.reduce((current, section) => {
const sectionTop = section.ref.current!.offsetTop + offsetTop;
return sectionTop <= marker ? section : current;
}, availableSections[0]);
setSelectedSectionId(activeSection.id);
}, [sections]);
const onMenuSelect = useCallback((event: React.MouseEvent<HTMLDivElement>) => {
const section = sections.find((section) => {
@ -55,11 +69,11 @@ const Settings = () => {
});
const container = sectionsContainerRef.current;
section && container!.scrollTo({
section && container?.scrollTo({
top: section.ref.current!.offsetTop - container!.offsetTop,
behavior: 'smooth'
});
}, []);
}, [sections]);
const onContainerScroll = useCallback(throttle(() => {
updateSelectedSectionId();