pinafore/routes/_components/timeline/Timeline.html

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<div class="timeline" role="feed" aria-label="{{label}}">
{{#if virtual}}
<VirtualList component="{{StatusVirtualListItem}}"
:makeProps
items="{{$statusIds}}"
on:scrollToBottom="onScrollToBottom()"
shown="{{$initialized}}"
footerComponent="{{LoadingFooter}}"
showFooter="{{$initialized && $runningUpdate}}"
realm="{{$currentInstance + '/' + timeline}}"
on:initializedVisibleItems="initialize()"
/>
{{else}}
<!-- if this is a status thread, it's easier to just render the
whole thing rather than use a virtual list -->
<PseudoVirtualList component="{{StatusVirtualListItem}}"
:makeProps
items="{{$statusIds}}"
shown="{{$initialized}}"
on:initializedVisibleItems="initialize()"
scrollToItem="{{timelineValue}}"
/>
{{/if}}
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</div>
<style>
.timeline {
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min-height: 60vh;
}
</style>
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<script>
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import { store } from '../../_store/store'
import StatusVirtualListItem from './StatusVirtualListItem.html'
import Status from '../status/Status.html'
import PseudoVirtualList from '../pseudoVirtualList/PseudoVirtualList.html'
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import LoadingFooter from './LoadingFooter.html'
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import VirtualList from '../virtualList/VirtualList.html'
import { timelines } from '../../_static/timelines'
import { database } from '../../_utils/database/database'
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import { initializeTimeline, fetchStatusesOnScrollToBottom, setupTimeline } from '../../_actions/timeline'
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export default {
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async oncreate() {
console.log('timeline oncreate()')
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setupTimeline()
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},
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data: () => ({
StatusVirtualListItem,
LoadingFooter,
Status
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}),
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computed: {
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makeProps: ($currentInstance, timelineType) => async (statusId) => ({
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timelineType: timelineType,
status: await database.getStatus($currentInstance, statusId)
}),
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label: (timeline, $currentInstance, timelineType, timelineValue) => {
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if (timelines[timeline]) {
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return `${timelines[timeline].label} timeline for ${$currentInstance}`
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}
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switch (timelineType) {
case 'tag':
return `#${timelineValue} timeline for ${$currentInstance}`
case 'status':
return 'Status context'
case 'account':
return `Account #${timelineValue} on ${$currentInstance}`
}
},
timelineType: (timeline) => {
return timeline.split('/')[0]
},
timelineValue: (timeline) => {
return timeline.split('/').slice(-1)[0]
},
// for threads, it's simpler to just render all items due to need to scroll to the right item
// TODO: this can be optimized to use a virtual list
virtual: (timelineType) => timelineType !=='status'
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},
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store: () => store,
components: {
VirtualList,
PseudoVirtualList
},
methods: {
initialize() {
if (this.store.get('initialized') || !this.store.get('statusIds') || !this.store.get('statusIds').length) {
return
}
console.log('timeline initialize()')
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initializeTimeline()
},
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onScrollToBottom() {
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if (!this.store.get('initialized') ||
this.store.get('runningUpdate') ||
this.get('timelineType') === 'status') { // for status contexts, we've already fetched the whole thread
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return
}
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fetchStatusesOnScrollToBottom()
}
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}
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}
</script>