f6154dc0af
Co-authored-by: MeiMei <30769358+mei23@users.noreply.github.com> Co-authored-by: Satsuki Yanagi <17376330+u1-liquid@users.noreply.github.com>
135 lines
3.2 KiB
TypeScript
135 lines
3.2 KiB
TypeScript
import Vue from 'vue';
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export default (opts) => ({
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data() {
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return {
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items: [],
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offset: 0,
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fetching: true,
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moreFetching: false,
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inited: false,
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more: false
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};
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},
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computed: {
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empty(): boolean {
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return this.items.length == 0 && !this.fetching && this.inited;
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},
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error(): boolean {
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return !this.fetching && !this.inited;
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},
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},
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watch: {
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pagination() {
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this.init();
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}
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},
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created() {
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opts.displayLimit = opts.displayLimit || 30;
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this.init();
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},
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methods: {
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isScrollTop() {
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return window.scrollY <= 8;
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},
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updateItem(i, item) {
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Vue.set((this as any).items, i, item);
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},
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reload() {
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this.items = [];
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this.init();
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},
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async init() {
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this.fetching = true;
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if (opts.before) opts.before(this);
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let params = typeof this.pagination.params === 'function' ? this.pagination.params(true) : this.pagination.params;
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if (params && params.then) params = await params;
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const endpoint = typeof this.pagination.endpoint === 'function' ? this.pagination.endpoint() : this.pagination.endpoint;
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await this.$root.api(endpoint, {
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limit: this.pagination.noPaging ? (this.pagination.limit || 10) : (this.pagination.limit || 10) + 1,
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...params
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}).then(x => {
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if (!this.pagination.noPaging && (x.length === (this.pagination.limit || 10) + 1)) {
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x.pop();
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this.items = x;
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this.more = true;
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} else {
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this.items = x;
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this.more = false;
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}
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this.offset = x.length;
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this.inited = true;
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this.fetching = false;
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if (opts.after) opts.after(this, null);
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}, e => {
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this.fetching = false;
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if (opts.after) opts.after(this, e);
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});
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},
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async fetchMore() {
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if (!this.more || this.moreFetching || this.items.length === 0) return;
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this.moreFetching = true;
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let params = typeof this.pagination.params === 'function' ? this.pagination.params(false) : this.pagination.params;
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if (params && params.then) params = await params;
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const endpoint = typeof this.pagination.endpoint === 'function' ? this.pagination.endpoint() : this.pagination.endpoint;
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await this.$root.api(endpoint, {
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limit: (this.pagination.limit || 10) + 1,
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...(this.pagination.offsetMode ? {
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offset: this.offset,
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} : {
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untilId: this.items[this.items.length - 1].id,
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}),
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...params
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}).then(x => {
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if (x.length === (this.pagination.limit || 10) + 1) {
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x.pop();
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this.items = this.items.concat(x);
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this.more = true;
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} else {
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this.items = this.items.concat(x);
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this.more = false;
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}
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this.offset += x.length;
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this.moreFetching = false;
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}, e => {
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this.moreFetching = false;
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});
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},
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prepend(item, silent = false) {
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if (opts.onPrepend) {
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const cancel = opts.onPrepend(this, item, silent);
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if (cancel) return;
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}
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// Prepend the item
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this.items.unshift(item);
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if (this.isScrollTop()) {
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// オーバーフローしたら古い投稿は捨てる
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if (this.items.length >= opts.displayLimit) {
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this.items = this.items.slice(0, opts.displayLimit);
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this.more = true;
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}
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}
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},
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append(item) {
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this.items.push(item);
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},
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remove(find) {
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this.items = this.items.filter(x => !find(x));
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},
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}
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});
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