112 lines
3.7 KiB
HTML
112 lines
3.7 KiB
HTML
<:Window bind:online />
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<div class="timeline" role="feed" aria-label="{{label}}" on:initialized>
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<VirtualList component="{{StatusListItem}}"
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items="{{keyedStatuses}}"
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on:scrollToBottom="onScrollToBottom()"
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shown="{{initialized}}"
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footerComponent="{{LoadingFooter}}"
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showFooter="{{initialized && runningUpdate}}"
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/>
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</div>
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<style>
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.timeline {
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min-height: 60vh;
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}
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</style>
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<script>
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import { store } from '../_utils/store'
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import { getTimeline } from '../_utils/mastodon/timelines'
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import StatusListItem from './StatusListItem.html'
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import LoadingFooter from './LoadingFooter.html'
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import VirtualList from './VirtualList.html'
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import { splice, push } from 'svelte-extras'
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import { mergeStatuses } from '../_utils/statuses'
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import { mark, stop } from '../_utils/marks'
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import { timelines } from '../_static/timelines'
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import { toast } from '../_utils/toast'
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import { database } from '../_utils/database/database'
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const FETCH_LIMIT = 20
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export default {
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async oncreate() {
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let statuses = await this.fetchStatusesAndPossiblyFallBack()
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this.addStatuses(statuses)
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requestAnimationFrame(() => {
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requestAnimationFrame((() => {
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this.set({initialized: true})
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this.fire('initialized')
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}))
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})
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},
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data: () => ({
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StatusListItem: StatusListItem,
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LoadingFooter: LoadingFooter,
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statuses: [],
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runningUpdate: false,
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initialized: false
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}),
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computed: {
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keyedStatuses: (statuses) => statuses.map(status => ({
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props: status,
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key: status.id
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})),
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lastStatusId: (statuses) => statuses.length && statuses[statuses.length - 1].id,
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label: (timeline, $currentInstance) => `${timelines[timeline].label} timeline for ${$currentInstance}`
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},
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store: () => store,
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components: {
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VirtualList
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},
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methods: {
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splice: splice,
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push: push,
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async onScrollToBottom() {
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if (!this.get('initialized')) {
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return
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}
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if (this.get('runningUpdate')) {
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return
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}
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mark('onScrollToBottom')
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this.set({ runningUpdate: true })
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let newStatuses = await this.fetchStatusesAndPossiblyFallBack()
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this.set({ runningUpdate: false })
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this.addStatuses(newStatuses)
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stop('onScrollToBottom')
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},
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addStatuses(newStatuses) {
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if (process.env.NODE_ENV !== 'production') {
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console.log('addStatuses()')
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}
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let statuses = this.get('statuses')
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if (!statuses) {
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return
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}
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let merged = mergeStatuses(statuses, newStatuses)
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this.set({ statuses: merged })
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},
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async fetchStatusesAndPossiblyFallBack() {
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let online = this.get('online')
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let instanceName = this.store.get('currentInstance')
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let instanceData = this.store.get('currentInstanceData')
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let timeline = this.get('timeline')
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let lastStatusId = this.get('lastStatusId')
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let statuses
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if (!online) {
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statuses = await database.getTimeline(instanceName, timeline, lastStatusId, FETCH_LIMIT)
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} else {
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try {
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statuses = await getTimeline(instanceName, instanceData.access_token, timeline, lastStatusId, FETCH_LIMIT)
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/* no await */ database.insertStatuses(instanceName, timeline, statuses)
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} catch (e) {
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console.error(e)
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toast.say('Internet request failed. Showing offline content.')
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statuses = await database.getTimeline(instanceName, timeline, lastStatusId, FETCH_LIMIT)
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}
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}
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return statuses
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}
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}
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}
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</script> |