347 lines
8.3 KiB
JavaScript
347 lines
8.3 KiB
JavaScript
/**
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* Copyright (c) 2015-present, Facebook, Inc.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*
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* @flow
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* @providesModule ListExampleShared
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*/
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'use strict';
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const React = require('react');
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const ReactNative = require('react-native');
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const {
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Animated,
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Image,
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Platform,
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TouchableHighlight,
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StyleSheet,
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Switch,
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Text,
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TextInput,
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View,
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} = ReactNative;
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type Item = {title: string, text: string, key: string, pressed: boolean, noImage?: ?boolean};
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function genItemData(count: number, start: number = 0): Array<Item> {
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const dataBlob = [];
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for (let ii = start; ii < count + start; ii++) {
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const itemHash = Math.abs(hashCode('Item ' + ii));
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dataBlob.push({
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title: 'Item ' + ii,
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text: LOREM_IPSUM.substr(0, itemHash % 301 + 20),
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key: String(ii),
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pressed: false,
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});
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}
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return dataBlob;
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}
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const HORIZ_WIDTH = 200;
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const ITEM_HEIGHT = 72;
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class ItemComponent extends React.PureComponent<{
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fixedHeight?: ?boolean,
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horizontal?: ?boolean,
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item: Item,
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onPress: (key: string) => void,
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onShowUnderlay?: () => void,
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onHideUnderlay?: () => void,
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}> {
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_onPress = () => {
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this.props.onPress(this.props.item.key);
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};
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render() {
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const {fixedHeight, horizontal, item} = this.props;
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const itemHash = Math.abs(hashCode(item.title));
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const imgSource = THUMB_URLS[itemHash % THUMB_URLS.length];
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return (
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<TouchableHighlight
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onPress={this._onPress}
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onShowUnderlay={this.props.onShowUnderlay}
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onHideUnderlay={this.props.onHideUnderlay}
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tvParallaxProperties={{
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pressMagnification: 1.1,
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}}
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style={horizontal ? styles.horizItem : styles.item}>
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<View style={[
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styles.row, horizontal && {width: HORIZ_WIDTH}, fixedHeight && {height: ITEM_HEIGHT}]}>
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{!item.noImage && <Image style={styles.thumb} source={imgSource} />}
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<Text
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style={styles.text}
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numberOfLines={(horizontal || fixedHeight) ? 3 : undefined}>
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{item.title} - {item.text}
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</Text>
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</View>
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</TouchableHighlight>
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);
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}
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}
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const renderStackedItem = ({item}: {item: Item}) => {
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const itemHash = Math.abs(hashCode(item.title));
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const imgSource = THUMB_URLS[itemHash % THUMB_URLS.length];
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return (
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<View style={styles.stacked}>
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<Text style={styles.stackedText}>{item.title} - {item.text}</Text>
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<Image style={styles.thumb} source={imgSource} />
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</View>
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);
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};
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class FooterComponent extends React.PureComponent<{}> {
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render() {
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return (
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<View style={styles.headerFooterContainer}>
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<SeparatorComponent />
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<View style={styles.headerFooter}>
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<Text>LIST FOOTER</Text>
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</View>
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</View>
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);
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}
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}
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class HeaderComponent extends React.PureComponent<{}> {
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render() {
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return (
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<View style={styles.headerFooterContainer}>
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<View style={styles.headerFooter}>
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<Text>LIST HEADER</Text>
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</View>
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<SeparatorComponent />
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</View>
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);
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}
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}
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class ListEmptyComponent extends React.PureComponent<{}> {
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render() {
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return (
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<View style={styles.listEmpty}>
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<Text>The list is empty :o</Text>
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</View>
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);
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}
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}
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class SeparatorComponent extends React.PureComponent<{}> {
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render() {
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return <View style={styles.separator} />;
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}
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}
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class ItemSeparatorComponent extends React.PureComponent<$FlowFixMeProps> {
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render() {
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const style = this.props.highlighted
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? [styles.itemSeparator, {marginLeft: 0, backgroundColor: 'rgb(217, 217, 217)'}]
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: styles.itemSeparator;
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return <View style={style} />;
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}
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}
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class Spindicator extends React.PureComponent<$FlowFixMeProps> {
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render() {
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return (
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<Animated.View style={[styles.spindicator, {
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transform: [
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{rotate: this.props.value.interpolate({
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inputRange: [0, 5000],
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outputRange: ['0deg', '360deg'],
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extrapolate: 'extend',
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})}
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]
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}]} />
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);
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}
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}
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const THUMB_URLS = [
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require('./Thumbnails/like.png'),
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require('./Thumbnails/dislike.png'),
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require('./Thumbnails/call.png'),
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require('./Thumbnails/fist.png'),
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require('./Thumbnails/bandaged.png'),
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require('./Thumbnails/flowers.png'),
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require('./Thumbnails/heart.png'),
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require('./Thumbnails/liking.png'),
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require('./Thumbnails/party.png'),
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require('./Thumbnails/poke.png'),
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require('./Thumbnails/superlike.png'),
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require('./Thumbnails/victory.png'),
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];
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const LOREM_IPSUM = 'Lorem ipsum dolor sit amet, ius ad pertinax oportere accommodare, an vix \
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civibus corrumpit referrentur. Te nam case ludus inciderint, te mea facilisi adipiscing. Sea id \
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integre luptatum. In tota sale consequuntur nec. Erat ocurreret mei ei. Eu paulo sapientem \
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vulputate est, vel an accusam intellegam interesset. Nam eu stet pericula reprimique, ea vim illud \
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modus, putant invidunt reprehendunt ne qui.';
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/* eslint no-bitwise: 0 */
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function hashCode(str: string): number {
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let hash = 15;
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for (let ii = str.length - 1; ii >= 0; ii--) {
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hash = ((hash << 5) - hash) + str.charCodeAt(ii);
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}
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return hash;
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}
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const HEADER = {height: 30, width: 100};
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const SEPARATOR_HEIGHT = StyleSheet.hairlineWidth;
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function getItemLayout(data: any, index: number, horizontal?: boolean) {
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const [length, separator, header] = horizontal ?
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[HORIZ_WIDTH, 0, HEADER.width] : [ITEM_HEIGHT, SEPARATOR_HEIGHT, HEADER.height];
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return {length, offset: (length + separator) * index + header, index};
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}
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function pressItem(context: Object, key: string) {
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const index = Number(key);
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const pressed = !context.state.data[index].pressed;
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context.setState((state) => {
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const newData = [...state.data];
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newData[index] = {
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...state.data[index],
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pressed,
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title: 'Item ' + key + (pressed ? ' (pressed)' : ''),
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};
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return {data: newData};
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});
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}
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function renderSmallSwitchOption(context: Object, key: string) {
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if (Platform.isTVOS) {
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return null;
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}
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return (
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<View style={styles.option}>
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<Text>{key}:</Text>
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<Switch
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style={styles.smallSwitch}
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value={context.state[key]}
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onValueChange={(value) => context.setState({[key]: value})}
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/>
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</View>
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);
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}
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function PlainInput(props: Object) {
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return (
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<TextInput
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autoCapitalize="none"
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autoCorrect={false}
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clearButtonMode="always"
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underlineColorAndroid="transparent"
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style={styles.searchTextInput}
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{...props}
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/>
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);
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}
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const styles = StyleSheet.create({
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headerFooter: {
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...HEADER,
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alignSelf: 'center',
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alignItems: 'center',
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justifyContent: 'center',
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},
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headerFooterContainer: {
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backgroundColor: 'rgb(239, 239, 244)',
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},
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listEmpty: {
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alignItems: 'center',
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justifyContent: 'center',
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flexGrow: 1,
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},
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horizItem: {
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alignSelf: 'flex-start', // Necessary for touch highlight
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},
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item: {
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flex: 1,
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},
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itemSeparator: {
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height: SEPARATOR_HEIGHT,
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backgroundColor: 'rgb(200, 199, 204)',
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marginLeft: 60,
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},
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option: {
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flexDirection: 'row',
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padding: 8,
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paddingRight: 0,
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},
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row: {
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flexDirection: 'row',
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padding: 10,
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backgroundColor: 'white',
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},
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searchTextInput: {
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backgroundColor: 'white',
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borderColor: '#cccccc',
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borderRadius: 3,
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borderWidth: 1,
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paddingLeft: 8,
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paddingVertical: 0,
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height: 26,
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fontSize: 14,
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flexGrow: 1,
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},
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separator: {
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height: SEPARATOR_HEIGHT,
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backgroundColor: 'rgb(200, 199, 204)',
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},
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smallSwitch: Platform.select({
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android: {
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top: 1,
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margin: -6,
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transform: [{scale: 0.7}],
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},
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ios: {
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top: 4,
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margin: -10,
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transform: [{scale: 0.5}],
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},
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}),
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stacked: {
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alignItems: 'center',
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backgroundColor: 'white',
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padding: 10,
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},
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thumb: {
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width: 50,
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height: 50,
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left: -5,
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},
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spindicator: {
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marginLeft: 'auto',
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marginTop: 8,
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width: 2,
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height: 16,
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backgroundColor: 'darkgray',
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},
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stackedText: {
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padding: 4,
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fontSize: 18,
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},
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text: {
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flex: 1,
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},
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});
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module.exports = {
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FooterComponent,
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HeaderComponent,
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ListEmptyComponent,
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ItemComponent,
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ItemSeparatorComponent,
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PlainInput,
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SeparatorComponent,
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Spindicator,
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genItemData,
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getItemLayout,
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pressItem,
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renderSmallSwitchOption,
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renderStackedItem,
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};
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