136 lines
3.8 KiB
TypeScript
136 lines
3.8 KiB
TypeScript
// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
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// See LICENSE.txt for license information.
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import React, {PureComponent} from 'react';
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import {LayoutChangeEvent, ScrollView, StyleProp, StyleSheet, TextStyle, View, ViewStyle} from 'react-native';
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import Markdown from '@components/markdown';
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import ShowMoreButton from '@components/show_more_button';
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import {PostMetadata} from '@mm-redux/types/posts';
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import {Theme} from '@mm-redux/types/preferences';
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const SHOW_MORE_HEIGHT = 60;
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type Props = {
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baseTextStyle: StyleProp<TextStyle>,
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blockStyles?: StyleProp<ViewStyle>[],
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deviceHeight: number,
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hasThumbnail?: boolean,
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metadata?: PostMetadata,
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onPermalinkPress?: () => void,
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textStyles?: StyleProp<TextStyle>[],
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theme?: Theme,
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value?: string,
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}
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type State = {
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collapsed: boolean;
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isLongText: boolean;
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maxHeight: number;
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}
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function getMaxHeight(deviceHeight: number) {
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return Math.round((deviceHeight * 0.4) + SHOW_MORE_HEIGHT);
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}
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export default class AttachmentText extends PureComponent<Props, State> {
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static getDerivedStateFromProps(nextProps: Props, prevState: State) {
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const {deviceHeight} = nextProps;
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const maxHeight = getMaxHeight(deviceHeight);
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if (maxHeight !== prevState.maxHeight) {
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return {
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maxHeight,
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};
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}
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return null;
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}
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constructor(props: Props) {
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super(props);
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const maxHeight = getMaxHeight(props.deviceHeight);
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this.state = {
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collapsed: true,
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isLongText: false,
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maxHeight,
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};
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}
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handleLayout = (event: LayoutChangeEvent) => {
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const {height} = event.nativeEvent.layout;
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const {maxHeight} = this.state;
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if (height >= maxHeight) {
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this.setState({
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isLongText: true,
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});
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}
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};
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toggleCollapseState = () => {
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const {collapsed} = this.state;
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this.setState({collapsed: !collapsed});
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};
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render() {
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const {
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baseTextStyle,
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blockStyles,
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hasThumbnail,
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metadata,
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onPermalinkPress,
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textStyles,
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theme,
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value,
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} = this.props;
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const {collapsed, isLongText, maxHeight} = this.state;
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if (!value) {
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return null;
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}
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return (
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<View style={hasThumbnail && style.container}>
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<ScrollView
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style={{maxHeight: (collapsed ? maxHeight : undefined), overflow: 'hidden'}}
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scrollEnabled={false}
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showsVerticalScrollIndicator={false}
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showsHorizontalScrollIndicator={false}
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>
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<View
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onLayout={this.handleLayout}
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removeClippedSubviews={isLongText && collapsed}
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>
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<Markdown
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// TODO: remove any when migrating Markdown to typescript
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baseTextStyle={baseTextStyle as any}
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textStyles={textStyles}
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blockStyles={blockStyles}
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disableGallery={true}
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imagesMetadata={metadata?.images}
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value={value}
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onPermalinkPress={onPermalinkPress}
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/>
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</View>
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</ScrollView>
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{isLongText &&
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<ShowMoreButton
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onPress={this.toggleCollapseState}
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showMore={collapsed}
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theme={theme}
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/>
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}
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</View>
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);
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}
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}
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const style = StyleSheet.create({
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container: {
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paddingRight: 60,
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},
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});
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