Paul Frazee
48 lines
1.5 KiB
TypeScript
48 lines
1.5 KiB
TypeScript
import React from 'react'
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import {observer} from 'mobx-react-lite'
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import {Text, View, FlatList} from 'react-native'
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import {
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NotificationsViewModel,
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NotificationsViewItemModel,
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} from '../../../state/models/notifications-view'
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import {FeedItem} from './FeedItem'
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export const Feed = observer(function Feed({
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view,
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}: {
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view: NotificationsViewModel
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}) {
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// TODO optimize renderItem or FeedItem, we're getting this notice from RN: -prf
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// VirtualizedList: You have a large list that is slow to update - make sure your
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// renderItem function renders components that follow React performance best practices
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// like PureComponent, shouldComponentUpdate, etc
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const renderItem = ({item}: {item: NotificationsViewItemModel}) => (
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<FeedItem item={item} />
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)
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const onRefresh = () => {
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view.refresh().catch(err => console.error('Failed to refresh', err))
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}
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const onEndReached = () => {
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view.loadMore().catch(err => console.error('Failed to load more', err))
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}
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return (
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<View style={{flex: 1}}>
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{view.isLoading && !view.isRefreshing && !view.hasContent && (
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<Text>Loading...</Text>
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)}
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{view.hasError && <Text>{view.error}</Text>}
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{view.hasContent && (
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<FlatList
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data={view.notifications}
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keyExtractor={item => item._reactKey}
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renderItem={renderItem}
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refreshing={view.isRefreshing}
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onRefresh={onRefresh}
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onEndReached={onEndReached}
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/>
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)}
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{view.isEmpty && <Text>This feed is empty!</Text>}
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</View>
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)
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})
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