1 files changed, 0 insertions, 80 deletions
diff --git a/src/client/scripts/scroll.ts b/src/client/scripts/scroll.ts
deleted file mode 100644
index 621fe88105..0000000000
--- a/src/client/scripts/scroll.ts
+++ /dev/null
@@ -1,80 +0,0 @@
-type ScrollBehavior = 'auto' | 'smooth' | 'instant';
-
-export function getScrollContainer(el: Element | null): Element | null {
-	if (el == null || el.tagName === 'BODY') return null;
-	const overflow = window.getComputedStyle(el).getPropertyValue('overflow');
-	if (overflow.endsWith('auto')) { // xとyを個別に指定している場合、hidden auto みたいな値になる
-		return el;
-	} else {
-		return getScrollContainer(el.parentElement);
-	}
-}
-
-export function getScrollPosition(el: Element | null): number {
-	const container = getScrollContainer(el);
-	return container == null ? window.scrollY : container.scrollTop;
-}
-
-export function isTopVisible(el: Element | null): boolean {
-	const scrollTop = getScrollPosition(el);
-	const topPosition = el.offsetTop; // TODO: container内でのelの相対位置を取得できればより正確になる
-
-	return scrollTop <= topPosition;
-}
-
-export function onScrollTop(el: Element, cb) {
-	const container = getScrollContainer(el) || window;
-	const onScroll = ev => {
-		if (!document.body.contains(el)) return;
-		if (isTopVisible(el)) {
-			cb();
-			container.removeEventListener('scroll', onScroll);
-		}
-	};
-	container.addEventListener('scroll', onScroll, { passive: true });
-}
-
-export function onScrollBottom(el: Element, cb) {
-	const container = getScrollContainer(el) || window;
-	const onScroll = ev => {
-		if (!document.body.contains(el)) return;
-		const pos = getScrollPosition(el);
-		if (pos + el.clientHeight > el.scrollHeight - 1) {
-			cb();
-			container.removeEventListener('scroll', onScroll);
-		}
-	};
-	container.addEventListener('scroll', onScroll, { passive: true });
-}
-
-export function scroll(el: Element, options: {
-	top?: number;
-	left?: number;
-	behavior?: ScrollBehavior;
-}) {
-	const container = getScrollContainer(el);
-	if (container == null) {
-		window.scroll(options);
-	} else {
-		container.scroll(options);
-	}
-}
-
-export function scrollToTop(el: Element, options: { behavior?: ScrollBehavior; } = {}) {
-	scroll(el, { top: 0, ...options });
-}
-
-export function scrollToBottom(el: Element, options: { behavior?: ScrollBehavior; } = {}) {
-	scroll(el, { top: 99999, ...options }); // TODO: ちゃんと計算する
-}
-
-export function isBottom(el: Element, asobi = 0) {
-	const container = getScrollContainer(el);
-	const current = container
-		? el.scrollTop + el.offsetHeight
-		: window.scrollY + window.innerHeight;
-	const max = container
-		? el.scrollHeight
-		: document.body.offsetHeight;
-	return current >= (max - asobi);
-}