wip

packages/client/src/components/ui/pagination.vue

@@ -287,7 +287,7 @@ onDeactivated(() => {
 });
 
 function toBottom() {
-	if (scrollableElement) scrollToBottom(scrollableElement);
+	scrollToBottom(contentEl);
 }
 
 onMounted(() => {

packages/client/src/pages/messaging/messaging-room.vue

@@ -49,7 +49,7 @@ import XList from '@/components/date-separated-list.vue';
 import MkPagination, { Paging } from '@/components/ui/pagination.vue';
 import XMessage from './messaging-room.message.vue';
 import XForm from './messaging-room.form.vue';
-import { isBottom, onScrollBottom, scroll } from '@/scripts/scroll';
+import { isBottom, onScrollBottom, scrollToBottom } from '@/scripts/scroll';
 import * as os from '@/os';
 import { stream } from '@/stream';
 import * as sound from '@/scripts/sound';
@@ -134,7 +134,7 @@ async function fetch() {
 
 	nextTick(() => {
 		pagingComponent.inited.then(() => {
-			scrollToBottom();
+			thisScrollToBottom();
 		});
 		window.setTimeout(() => {
 			fetching = false
@@ -194,7 +194,7 @@ function onMessage(message) {
 	if (_isBottom) {
 		// Scroll to bottom
 		nextTick(() => {
-			scrollToBottom();
+			thisScrollToBottom();
 		});
 	} else if (message.userId != $i?.id) {
 		// Notify
@@ -234,13 +234,13 @@ function onDeleted(id) {
 	}
 }
 
-function scrollToBottom() {
-	scroll(rootEl, { top: rootEl.scrollHeight || 999999, behavior: "smooth" });
+function thisScrollToBottom() {
+	scrollToBottom($$(rootEl).value, { behavior: "smooth" });
 }
 
 function onIndicatorClick() {
 	showIndicator = false;
-	scrollToBottom();
+	thisScrollToBottom();
 }
 
 function notifyNewMessage() {

packages/client/src/scripts/scroll.ts

@@ -1,5 +1,3 @@
-type ScrollBehavior = 'auto' | 'smooth' | 'instant';
-
 export function getScrollContainer(el: HTMLElement | null): HTMLElement | null {
 	if (el == null || el.tagName === 'HTML') return null;
 	const overflow = window.getComputedStyle(el).getPropertyValue('overflow');
@@ -19,7 +17,7 @@ export function getScrollPosition(el: HTMLElement | null): number {
 	return container == null ? window.scrollY : container.scrollTop;
 }
 
-export function isTopVisible(el: HTMLElement | null): boolean {
+export function isTopVisible(el: HTMLElement): 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
 
@@ -32,10 +30,12 @@ export function onScrollTop(el: HTMLElement, cb) {
 		if (!document.body.contains(el)) return;
 		if (isTopVisible(el)) {
 			cb();
-			container.removeEventListener('scroll', onScroll);
+			removeListener();
 		}
 	};
+	function removeListener() { container.removeEventListener('scroll', onScroll) }
 	container.addEventListener('scroll', onScroll, { passive: true });
+	return removeListener;
 }
 
 export function onScrollBottom(el: HTMLElement, cb) {
@@ -45,17 +45,15 @@ export function onScrollBottom(el: HTMLElement, cb) {
 		if (!document.body.contains(el)) return;
 		if (isBottom(el, 1, container)) {
 			cb();
-			containerOrWindow.removeEventListener('scroll', onScroll);
+			removeListener();
 		}
 	};
+	function removeListener() { containerOrWindow.removeEventListener('scroll', onScroll) }
 	containerOrWindow.addEventListener('scroll', onScroll, { passive: true });
+	return removeListener;
 }
 
-export function scroll(el: HTMLElement, options: {
-	top?: number;
-	left?: number;
-	behavior?: ScrollBehavior;
-}) {
+export function scroll(el: HTMLElement, options: ScrollToOptions | undefined) {
 	const container = getScrollContainer(el);
 	if (container == null) {
 		window.scroll(options);
@@ -75,11 +73,16 @@ export function scrollToTop(el: HTMLElement, options: { behavior?: ScrollBehavio
 
 /**
  * Scroll to Bottom
- * @param el Scroll container element
+ * @param el Content element
  * @param options Scroll options
+ * @param container Scroll container element
  */
-export function scrollToBottom(el: HTMLElement, options: { behavior?: ScrollBehavior; } = {}) {
-	scroll(el, { top: el.scrollHeight, ...options }); // TODO: ちゃんと計算する
+export function scrollToBottom(el: HTMLElement, options: ScrollToOptions = {}, container = getScrollContainer(el)) {
+	if (container) {
+		container.scroll({ top: el.scrollHeight - container.clientHeight || 0, ...options });
+	} else {
+		window.scroll({ top: el.scrollHeight - window.innerHeight || 0, ...options });
+	}
 }
 
 export function isBottom(el: HTMLElement, asobi = 1, container = getScrollContainer(el)) {