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バックグラウンドで一定時間経過したらページネーションのアイテム更新をしない (#10053)
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2 changed files with 53 additions and 3 deletions
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@ -42,6 +42,7 @@ import { computed, ComputedRef, isRef, nextTick, onActivated, onBeforeUnmount, o
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import * as misskey from 'misskey-js';
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import * as os from '@/os';
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import { onScrollTop, isTopVisible, getBodyScrollHeight, getScrollContainer, onScrollBottom, scrollToBottom, scroll, isBottomVisible } from '@/scripts/scroll';
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import { useDocumentVisibility } from '@/scripts/use-document-visibility';
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import MkButton from '@/components/MkButton.vue';
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import { defaultStore } from '@/store';
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import { MisskeyEntity } from '@/types/date-separated-list';
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@ -107,6 +108,12 @@ const {
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const contentEl = $computed(() => props.pagination.pageEl ?? rootEl);
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const scrollableElement = $computed(() => getScrollContainer(contentEl));
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const visibility = useDocumentVisibility();
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let isPausingUpdate = false;
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let timerForSetPause: number | null = null;
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const BACKGROUND_PAUSE_WAIT_SEC = 10;
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// 先頭が表示されているかどうかを検出
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// https://qiita.com/mkataigi/items/0154aefd2223ce23398e
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let scrollObserver = $ref<IntersectionObserver>();
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@ -279,6 +286,28 @@ const fetchMoreAhead = async (): Promise<void> => {
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});
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};
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const isTop = (): boolean => isBackTop.value || (props.pagination.reversed ? isBottomVisible : isTopVisible)(contentEl, TOLERANCE);
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watch(visibility, () => {
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if (visibility.value === 'hidden') {
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timerForSetPause = window.setTimeout(() => {
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isPausingUpdate = true;
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timerForSetPause = null;
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},
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BACKGROUND_PAUSE_WAIT_SEC * 1000);
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} else { // 'visible'
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if (timerForSetPause) {
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clearTimeout(timerForSetPause);
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timerForSetPause = null;
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} else {
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isPausingUpdate = false;
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if (isTop()) {
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executeQueue();
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}
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}
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}
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});
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const prepend = (item: MisskeyEntity): void => {
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// 初回表示時はunshiftだけでOK
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if (!rootEl) {
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@ -286,9 +315,7 @@ const prepend = (item: MisskeyEntity): void => {
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return;
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}
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const isTop = isBackTop.value || (props.pagination.reversed ? isBottomVisible : isTopVisible)(contentEl, TOLERANCE);
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if (isTop) unshiftItems([item]);
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if (isTop() && !isPausingUpdate) unshiftItems([item]);
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else prependQueue(item);
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};
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@ -357,6 +384,10 @@ onMounted(() => {
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});
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onBeforeUnmount(() => {
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if (timerForSetPause) {
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clearTimeout(timerForSetPause);
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timerForSetPause = null;
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}
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scrollObserver.disconnect();
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});
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19
packages/frontend/src/scripts/use-document-visibility.ts
Normal file
19
packages/frontend/src/scripts/use-document-visibility.ts
Normal file
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@ -0,0 +1,19 @@
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import { onMounted, onUnmounted, ref, Ref } from 'vue';
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export function useDocumentVisibility(): Ref<DocumentVisibilityState> {
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const visibility = ref(document.visibilityState);
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const onChange = (): void => {
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visibility.value = document.visibilityState;
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};
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onMounted(() => {
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document.addEventListener('visibilitychange', onChange);
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});
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onUnmounted(() => {
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document.removeEventListener('visibilitychange', onChange);
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});
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return visibility;
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}
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