mirror of https://github.com/tooot-app/app
221 lines
5.7 KiB
TypeScript
221 lines
5.7 KiB
TypeScript
import React, { useCallback, useState } from 'react'
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import { Pressable, Text } from 'react-native'
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import HTMLView from 'react-native-htmlview'
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import { useNavigation } from '@react-navigation/native'
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import Emojis from 'src/components/Timelines/Timeline/Shared/Emojis'
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import { useTheme } from 'src/utils/styles/ThemeManager'
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import { Feather } from '@expo/vector-icons'
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import { StyleConstants } from 'src/utils/styles/constants'
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import { LinearGradient } from 'expo-linear-gradient'
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// Prevent going to the same hashtag multiple times
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const renderNode = ({
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theme,
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node,
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index,
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size,
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navigation,
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mentions,
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showFullLink
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}: {
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theme: any
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node: any
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index: number
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size: 'M' | 'L'
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navigation: any
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mentions?: Mastodon.Mention[]
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showFullLink: boolean
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}) => {
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if (node.name == 'a') {
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const classes = node.attribs.class
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const href = node.attribs.href
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if (classes) {
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if (classes.includes('hashtag')) {
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return (
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<Text
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key={index}
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style={{
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color: theme.link,
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fontSize: StyleConstants.Font.Size[size]
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}}
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onPress={() => {
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const tag = href.split(new RegExp(/\/tag\/(.*)|\/tags\/(.*)/))
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navigation.push('Screen-Shared-Hashtag', {
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hashtag: tag[1] || tag[2]
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})
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}}
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>
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{node.children[0].data}
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{node.children[1]?.children[0].data}
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</Text>
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)
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} else if (classes.includes('mention') && mentions) {
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return (
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<Text
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key={index}
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style={{
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color: theme.link,
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fontSize: StyleConstants.Font.Size[size]
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}}
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onPress={() => {
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const username = href.split(new RegExp(/@(.*)/))
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const usernameIndex = mentions.findIndex(
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m => m.username === username[1]
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)
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navigation.push('Screen-Shared-Account', {
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id: mentions[usernameIndex].id
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})
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}}
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>
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{node.children[0].data}
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{node.children[1]?.children[0].data}
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</Text>
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)
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}
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} else {
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const domain = href.split(new RegExp(/:\/\/(.*?)\//))
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return (
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<Text
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key={index}
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style={{
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color: theme.link,
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fontSize: StyleConstants.Font.Size[size]
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}}
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onPress={() => {
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navigation.navigate('Screen-Shared-Webview', {
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uri: href,
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domain: domain[1]
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})
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}}
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>
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<Feather
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name='external-link'
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size={StyleConstants.Font.Size[size]}
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color={theme.link}
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/>{' '}
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{showFullLink ? href : domain[1]}
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</Text>
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)
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}
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}
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}
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export interface Props {
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content: string
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size: 'M' | 'L'
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emojis?: Mastodon.Emoji[]
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mentions?: Mastodon.Mention[]
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showFullLink?: boolean
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numberOfLines?: number
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}
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const ParseContent: React.FC<Props> = ({
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content,
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size,
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emojis,
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mentions,
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showFullLink = false,
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numberOfLines = 10
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}) => {
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const navigation = useNavigation()
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const { theme } = useTheme()
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const renderNodeCallback = useCallback(
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(node, index) =>
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renderNode({
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theme,
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node,
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index,
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size,
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navigation,
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mentions,
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showFullLink
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}),
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[]
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)
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const textComponent = useCallback(
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({ children }) =>
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emojis && children ? (
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<Emojis
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content={children.toString()}
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emojis={emojis}
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size={StyleConstants.Font.Size[size]}
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/>
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) : (
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<Text>{children}</Text>
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),
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[]
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)
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const rootComponent = useCallback(({ children }) => {
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const { theme } = useTheme()
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const [textLoaded, setTextLoaded] = useState(false)
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const [totalLines, setTotalLines] = useState<number | undefined>()
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const [lineHeight, setLineHeight] = useState<number | undefined>()
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const [shownLines, setShownLines] = useState(numberOfLines)
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return (
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<>
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<Text
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numberOfLines={
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totalLines && totalLines > numberOfLines ? shownLines : totalLines
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}
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style={{ lineHeight: StyleConstants.Font.LineHeight[size] }}
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onTextLayout={({ nativeEvent }) => {
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if (!textLoaded) {
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setTextLoaded(true)
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setTotalLines(nativeEvent.lines.length)
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setLineHeight(nativeEvent.lines[0].height)
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}
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}}
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>
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{children}
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</Text>
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{totalLines && lineHeight && totalLines > shownLines && (
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<Pressable
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onPress={() => {
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setShownLines(totalLines)
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}}
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style={{
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marginTop: -lineHeight
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}}
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>
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<LinearGradient
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colors={[
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theme.backgroundGradientStart,
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theme.backgroundGradientEnd
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]}
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locations={[0, lineHeight / (StyleConstants.Font.Size.S * 5)]}
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style={{
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paddingTop: StyleConstants.Font.Size.S * 2,
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paddingBottom: StyleConstants.Font.Size.S
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}}
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>
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<Text
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style={{
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textAlign: 'center',
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fontSize: StyleConstants.Font.Size.S,
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color: theme.primary
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}}
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>
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展开全文
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</Text>
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</LinearGradient>
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</Pressable>
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)}
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</>
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)
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}, [])
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return (
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<HTMLView
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value={content}
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TextComponent={textComponent}
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RootComponent={rootComponent}
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renderNode={renderNodeCallback}
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/>
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)
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}
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export default ParseContent
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