<template>
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<scroll-view
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:scroll-y="true"
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:refresher-background="'transparent'"
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:lowerThreshold="100"
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@scrolltolower="lower"
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:refresherEnabled="refresherEnabled"
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:refresherTriggered="state.triggered"
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@refresherrefresh="onRefresherRefresh"
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:show-scrollbar="false"
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:style="scrollViewStyle"
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:enable-back-to-top="true"
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:class="[scrollViewClassName]"
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@scroll="onScroll"
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:scroll-top="scrollDistance"
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enhanced
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:scroll-with-animation="true"
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v-bind="{ ...$attrs }"
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>
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<slot name="header"></slot>
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<LoadingLayout :loading="isLoading" :error="isError" :loadError="() => refetch?.()">
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<NoData v-if="hasNoData" />
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<div
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:class="['infinite-list-inner', { noShowMoreText: !showMoreText, hasPaddingTop }]"
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v-else
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>
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<slot name="extra" />
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<slot v-if="$slots.default" />
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<template v-else>
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<template v-for="(group, index) in listData.pages" :key="index">
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<template v-for="(item, i) in group.data" :key="i">
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<slot
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name="renderItem"
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:item="item"
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:groupIndex="index"
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:itemIndex="i"
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:index="findDataIndex(item)"
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/>
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</template>
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</template>
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</template>
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</div>
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<div
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v-if="!hasNoData && showMoreText && listData?.pages?.length > 0 && !hasMore"
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class="loading-more-tips"
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>
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{{ noMoreText }}
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</div>
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<div v-if="isFetching && hasMore && enabledLoadingMore" class="infiniting-tips">
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<Loading class="infiniting-tips-icon"></Loading>数据加载中...
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</div>
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</LoadingLayout>
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</scroll-view>
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<div class="back-top-wrapper" @click.stop="backToTop" v-show="oldScrollDistance > 100">
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<img class="back-top-img" :src="IconBackTop" />
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<div class="back-top-text">返回顶部</div>
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</div>
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</template>
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<script lang="ts" setup generic="T">
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import { VNode, CSSProperties, computed, reactive } from 'vue';
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import NoData from '../NoData/NoData.vue';
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import LoadingLayout from '../Layout/LoadingLayout.vue';
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import { FetchNextPageOptions } from '@tanstack/vue-query';
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import { Loading } from '@nutui/icons-vue-taro';
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import { useScrollDistance } from 'senin-mini/hooks';
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import IconBackTop from '../../assets/icon-back-top.png';
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import { ScrollView } from '@tarojs/components';
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defineOptions({
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name: 'InfiniteLoading',
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});
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type Page = {
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data?: T[];
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pageModel?: {
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rows?: number;
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page?: number;
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totalCount?: number;
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totalPage?: number;
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};
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[key: string]: any;
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};
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type TData = {
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pages: Page[];
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};
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type Props = {
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// list?: TData;
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listData?: TData;
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flattenListData?: T[];
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renderItem?: (item: T, index: number) => VNode;
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refresherEnabled?: boolean;
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hasMore?: boolean;
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isLoading?: boolean;
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isError?: boolean;
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isFetching?: boolean;
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isFetchingNextPage?: boolean;
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refetch?: (options?: any) => Promise<any>;
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scrollViewStyle?: string | CSSProperties;
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scrollViewClassName?: string;
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fetchNextPage?: (options?: FetchNextPageOptions) => Promise<any>;
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showMoreText?: boolean;
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hasPaddingTop?: boolean;
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noMoreText?: string;
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enabledLoadingMore?: boolean;
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customNoData?: boolean;
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};
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const props = withDefaults(defineProps<Props>(), {
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renderItem: () => () => null,
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refresherEnabled: true,
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showMoreText: true,
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hasPaddingTop: false,
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noMoreText: '没有更多内容了~',
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enabledLoadingMore: true,
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customNoData: undefined,
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});
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const emit = defineEmits<{
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(e: 'refresh', done: () => any): void;
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(e: 'loadMore'): void;
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}>();
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const hasNoData = computed(() => {
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if (props.customNoData !== undefined) return props.customNoData;
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if (props.listData?.pages?.length) {
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return props.listData?.pages[0].data.length === 0;
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}
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return true;
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});
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const state = reactive({
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triggered: false,
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});
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function lower() {
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if (props.hasMore && props.enabledLoadingMore) {
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props.fetchNextPage?.();
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emit('loadMore');
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}
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}
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// eslint-disable-next-line no-unused-vars
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async function onRefresherRefresh() {
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try {
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// 正处于刷新状态
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if (state.triggered) return;
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state.triggered = true;
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await props.refetch?.();
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state.triggered = false;
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} catch (error) {}
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}
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const { onScroll, scrollDistance, oldScrollDistance, setScrollDistance } = useScrollDistance();
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function backToTop() {
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setScrollDistance(0);
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}
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const scrollToBottom = (dis = 300) => {
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setScrollDistance(scrollDistance.value + dis);
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};
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function findDataIndex(item: T) {
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return props.flattenListData?.findIndex((data) => data === item);
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}
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defineExpose({ backToTop, scrollToBottom });
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</script>
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