121 lines
4.3 KiB
JavaScript
121 lines
4.3 KiB
JavaScript
/**
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* Copyright 2004-present Facebook. All Rights Reserved.
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*
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* @provides ListViewSimpleExample
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*/
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'use strict';
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var React = require('react-native');
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var {
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Image,
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ListView,
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TouchableHighlight,
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StyleSheet,
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Text,
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View,
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} = React;
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var UIExplorerPage = require('./UIExplorerPage');
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var ListViewSimpleExample = React.createClass({
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statics: {
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title: '<ListView> - Simple',
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description: 'Performant, scrollable list of data.'
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},
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getInitialState: function() {
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var ds = new ListView.DataSource({rowHasChanged: (r1, r2) => r1 !== r2});
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return {
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dataSource: ds.cloneWithRows(this._genRows({})),
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};
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},
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componentWillMount: function() {
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this._pressData = {};
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},
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render: function() {
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return (
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<UIExplorerPage
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title={this.props.navigator ? null : '<ListView> - Simple'}
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noSpacer={true}
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noScroll={true}>
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<ListView
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dataSource={this.state.dataSource}
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renderRow={this._renderRow}
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/>
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</UIExplorerPage>
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);
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},
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_renderRow: function(rowData, sectionID, rowID) {
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var rowHash = Math.abs(hashCode(rowData));
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var imgSource = {
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uri: THUMB_URLS[rowHash % THUMB_URLS.length],
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};
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return (
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<TouchableHighlight onPress={() => this._pressRow(rowID)}>
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<View>
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<View style={styles.row}>
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<Image style={styles.thumb} source={imgSource} />
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<Text style={styles.text}>
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{rowData + ' - ' + LOREM_IPSUM.substr(0, rowHash % 301 + 10)}
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</Text>
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</View>
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<View style={styles.separator} />
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</View>
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</TouchableHighlight>
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);
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},
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_genRows: function(pressData) {
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var dataBlob = [];
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for (var ii = 0; ii < 100; ii++) {
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var pressedText = pressData[ii] ? ' (pressed)' : '';
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dataBlob.push('Row ' + ii + pressedText);
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}
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return dataBlob;
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},
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_pressRow: function(rowID) {
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this._pressData[rowID] = !this._pressData[rowID];
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this.setState({dataSource: this.state.dataSource.cloneWithRows(
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this._genRows(this._pressData)
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)});
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},
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});
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var THUMB_URLS = ['https://fbcdn-dragon-a.akamaihd.net/hphotos-ak-ash3/t39.1997/p128x128/851549_767334479959628_274486868_n.png', 'https://fbcdn-dragon-a.akamaihd.net/hphotos-ak-prn1/t39.1997/p128x128/851561_767334496626293_1958532586_n.png', 'https://fbcdn-dragon-a.akamaihd.net/hphotos-ak-ash3/t39.1997/p128x128/851579_767334503292959_179092627_n.png', 'https://fbcdn-dragon-a.akamaihd.net/hphotos-ak-prn1/t39.1997/p128x128/851589_767334513292958_1747022277_n.png', 'https://fbcdn-dragon-a.akamaihd.net/hphotos-ak-prn1/t39.1997/p128x128/851563_767334559959620_1193692107_n.png', 'https://fbcdn-dragon-a.akamaihd.net/hphotos-ak-prn1/t39.1997/p128x128/851593_767334566626286_1953955109_n.png', 'https://fbcdn-dragon-a.akamaihd.net/hphotos-ak-prn1/t39.1997/p128x128/851591_767334523292957_797560749_n.png', 'https://fbcdn-dragon-a.akamaihd.net/hphotos-ak-prn1/t39.1997/p128x128/851567_767334529959623_843148472_n.png', 'https://fbcdn-dragon-a.akamaihd.net/hphotos-ak-prn1/t39.1997/p128x128/851548_767334489959627_794462220_n.png', 'https://fbcdn-dragon-a.akamaihd.net/hphotos-ak-prn1/t39.1997/p128x128/851575_767334539959622_441598241_n.png', 'https://fbcdn-dragon-a.akamaihd.net/hphotos-ak-ash3/t39.1997/p128x128/851573_767334549959621_534583464_n.png', 'https://fbcdn-dragon-a.akamaihd.net/hphotos-ak-prn1/t39.1997/p128x128/851583_767334573292952_1519550680_n.png'];
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var LOREM_IPSUM = 'Lorem ipsum dolor sit amet, ius ad pertinax oportere accommodare, an vix civibus corrumpit referrentur. Te nam case ludus inciderint, te mea facilisi adipiscing. Sea id integre luptatum. In tota sale consequuntur nec. Erat ocurreret mei ei. Eu paulo sapientem vulputate est, vel an accusam intellegam interesset. Nam eu stet pericula reprimique, ea vim illud modus, putant invidunt reprehendunt ne qui.';
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/* eslint no-bitwise: 0 */
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var hashCode = function(str) {
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var hash = 15;
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for (var 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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var styles = StyleSheet.create({
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row: {
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flexDirection: 'row',
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justifyContent: 'center',
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padding: 10,
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backgroundColor: '#F6F6F6',
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},
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separator: {
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height: 1,
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backgroundColor: '#CCCCCC',
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},
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thumb: {
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width: 64,
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height: 64,
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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 = ListViewSimpleExample;
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