egirlskey/packages/frontend/src/scripts/focus.ts
2022-12-27 14:36:33 +09:00

27 lines
647 B
TypeScript

export function focusPrev(el: Element | null, self = false, scroll = true) {
if (el == null) return;
if (!self) el = el.previousElementSibling;
if (el) {
if (el.hasAttribute('tabindex')) {
(el as HTMLElement).focus({
preventScroll: !scroll,
});
} else {
focusPrev(el.previousElementSibling, true);
}
}
}
export function focusNext(el: Element | null, self = false, scroll = true) {
if (el == null) return;
if (!self) el = el.nextElementSibling;
if (el) {
if (el.hasAttribute('tabindex')) {
(el as HTMLElement).focus({
preventScroll: !scroll,
});
} else {
focusPrev(el.nextElementSibling, true);
}
}
}