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tamaina 2023-07-11 12:36:45 +00:00
parent 9f246e3dc7
commit 5f1cd1e532
2 changed files with 21 additions and 13 deletions
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32
packages/frontend/src/components/MkPagination.vue
View file

@ -41,7 +41,7 @@
import { computed, ComputedRef, isRef, nextTick, onActivated, onBeforeUnmount, onDeactivated, onMounted, ref, watch } from 'vue'; import { computed, ComputedRef, isRef, nextTick, onActivated, onBeforeUnmount, onDeactivated, onMounted, ref, watch } from 'vue';
import * as misskey from 'misskey-js'; import * as misskey from 'misskey-js';
import * as os from '@/os'; import * as os from '@/os';
import { onScrollTop, isTopVisible, getBodyScrollHeight, getScrollContainer, onScrollBottom, scrollToBottom, scroll, isBottomVisible } from '@/scripts/scroll'; import { onScrollTop, getBodyScrollHeight, getScrollContainer, onScrollBottom, scrollToBottom, scroll } from '@/scripts/scroll';
import { useDocumentVisibility } from '@/scripts/use-document-visibility'; import { useDocumentVisibility } from '@/scripts/use-document-visibility';
import MkButton from '@/components/MkButton.vue'; import MkButton from '@/components/MkButton.vue';
import { defaultStore } from '@/store'; import { defaultStore } from '@/store';
@ -49,7 +49,7 @@ import { MisskeyEntity } from '@/types/date-separated-list';
import { i18n } from '@/i18n'; import { i18n } from '@/i18n';
const SECOND_FETCH_LIMIT = 30; const SECOND_FETCH_LIMIT = 30;
const TOLERANCE = 16; const TOLERANCE = 64;
const APPEAR_MINIMUM_INTERVAL = 600; const APPEAR_MINIMUM_INTERVAL = 600;
export type Paging<E extends keyof misskey.Endpoints = keyof misskey.Endpoints> = { export type Paging<E extends keyof misskey.Endpoints = keyof misskey.Endpoints> = {
@ -108,7 +108,10 @@ const emit = defineEmits<{
let rootEl = $shallowRef<HTMLElement>(); let rootEl = $shallowRef<HTMLElement>();
// 遡り中かどうか /**
* スクロールが先頭にある場合はfalse
* スクロールが先頭にない場合にtrue
*/
let backed = $ref(false); let backed = $ref(false);
let scrollRemove = $ref<(() => void) | null>(null); let scrollRemove = $ref<(() => void) | null>(null);
@ -158,8 +161,11 @@ let isPausingUpdate = false;
let timerForSetPause: number | null = null; let timerForSetPause: number | null = null;
const BACKGROUND_PAUSE_WAIT_SEC = 10; const BACKGROUND_PAUSE_WAIT_SEC = 10;
// 先頭が表示されているかどうかを検出 //#region scrolling
// https://qiita.com/mkataigi/items/0154aefd2223ce23398e /**
* IntersectionObserverで大まかに検出
* https://qiita.com/mkataigi/items/0154aefd2223ce23398e
*/
let scrollObserver = $ref<IntersectionObserver>(); let scrollObserver = $ref<IntersectionObserver>();
watch([() => props.pagination.reversed, $$(scrollableElement)], () => { watch([() => props.pagination.reversed, $$(scrollableElement)], () => {
@ -170,7 +176,7 @@ watch([() => props.pagination.reversed, $$(scrollableElement)], () => {
}, { }, {
root: scrollableElement, root: scrollableElement,
rootMargin: props.pagination.reversed ? '-100% 0px 100% 0px' : '100% 0px -100% 0px', rootMargin: props.pagination.reversed ? '-100% 0px 100% 0px' : '100% 0px -100% 0px',
threshold: 0.01, threshold: 0.1, // 10%ぐらいになったらqueueを読む
}); });
}, { immediate: true }); }, { immediate: true });
@ -181,16 +187,20 @@ watch($$(rootEl), () => {
}); });
}); });
/**
* onScrollTop/onScrollBottomで細かく検出する
*/
watch([$$(backed), $$(contentEl)], () => { watch([$$(backed), $$(contentEl)], () => {
if (!backed) { if (!contentEl) return;
if (!contentEl) return;
if (!backed) {
scrollRemove = (props.pagination.reversed ? onScrollBottom : onScrollTop)(contentEl, executeQueue, TOLERANCE); scrollRemove = (props.pagination.reversed ? onScrollBottom : onScrollTop)(contentEl, executeQueue, TOLERANCE);
} else { } else {
if (scrollRemove) scrollRemove(); if (scrollRemove) scrollRemove();
scrollRemove = null; scrollRemove = null;
} }
}); });
//#endregion
if (props.pagination.params && isRef(props.pagination.params)) { if (props.pagination.params && isRef(props.pagination.params)) {
watch(props.pagination.params, init, { deep: true }); watch(props.pagination.params, init, { deep: true });
@ -353,8 +363,6 @@ const appearFetchMoreAhead = async (): Promise<void> => {
fetchMoreAppearTimeout(); fetchMoreAppearTimeout();
}; };
const isTop = (): boolean => (props.pagination.reversed ? isBottomVisible : isTopVisible)(contentEl!, TOLERANCE);
function visibilityChange() { function visibilityChange() {
if (visibility.value === 'hidden') { if (visibility.value === 'hidden') {
timerForSetPause = window.setTimeout(() => { timerForSetPause = window.setTimeout(() => {
@ -368,7 +376,7 @@ function visibilityChange() {
timerForSetPause = null; timerForSetPause = null;
} else { } else {
isPausingUpdate = false; isPausingUpdate = false;
if (isTop() && active.value) { if (!backed && active.value) {
executeQueue(); executeQueue();
} }
} }
@ -399,7 +407,7 @@ const prepend = (item: MisskeyEntity): void => {
} }
if ( if (
isTop() && // 先頭に表示されていない時はキューに追加する !backed && // 先頭に表示されていない時はキューに追加する
!isPausingUpdate && // タブがバックグラウンドの時はキューに追加する !isPausingUpdate && // タブがバックグラウンドの時はキューに追加する
active.value // keepAliveで隠されている間はキューに追加する active.value // keepAliveで隠されている間はキューに追加する
) { ) {

2
packages/frontend/src/scripts/scroll.ts
View file

@ -25,7 +25,7 @@ export function getScrollPosition(el: HTMLElement | null): number {
export function onScrollTop(el: HTMLElement, cb: () => unknown, tolerance = 1, once = false) { export function onScrollTop(el: HTMLElement, cb: () => unknown, tolerance = 1, once = false) {
// とりあえず評価してみる // とりあえず評価してみる
if (isTopVisible(el)) { if (isTopVisible(el, tolerance)) {
cb(); cb();
if (once) return null; if (once) return null;
} }