yylib-quick-mobile/dist/yylib/list-view/YYPullToRefresh.js

yylib-quick-mobile

import React from 'react';
import ReactDOM from 'react-dom';
import { PullToRefresh, ListView, Button } from 'antd-mobile';

const data = [
    {
        img: 'https://zos.alipayobjects.com/rmsportal/dKbkpPXKfvZzWCM.png',
        title: 'Meet hotel',
        des: '不是所有的兼职汪都需要风吹日晒',
    },
    {
        img: 'https://zos.alipayobjects.com/rmsportal/XmwCzSeJiqpkuMB.png',
        title: 'McDonald\'s invites you',
        des: '不是所有的兼职汪都需要风吹日晒',
    },
    {
        img: 'https://zos.alipayobjects.com/rmsportal/hfVtzEhPzTUewPm.png',
        title: 'Eat the week',
        des: '不是所有的兼职汪都需要风吹日晒',
    },
];
const NUM_ROWS = 20;
let pageIndex = 0;

function genData(pIndex = 0) {
    const dataArr = [];
    for (let i = 0; i < NUM_ROWS; i++) {
        dataArr.push(`row - ${(pIndex * NUM_ROWS) + i}`);
    }
    return dataArr;
}

class YYPullToRefresh extends React.Component {
    constructor(props) {
        super(props);
        const dataSource = new ListView.DataSource({
            rowHasChanged: (row1, row2) => row1 !== row2,
        });

        this.state = {
            dataSource,
            refreshing: true,
            isLoading: true,
            height: document.documentElement.clientHeight,
            useBodyScroll: false,
        };
    }

    // If you use redux, the data maybe at props, you need use `componentWillReceiveProps`
    // componentWillReceiveProps(nextProps) {
    //   if (nextProps.dataSource !== this.props.dataSource) {
    //     this.setState({
    //       dataSource: this.state.dataSource.cloneWithRows(nextProps.dataSource),
    //     });
    //   }
    // }

    componentDidUpdate() {
        if (this.state.useBodyScroll) {
            document.body.style.overflow = 'auto';
        } else {
            document.body.style.overflow = 'hidden';
        }
    }

    componentDidMount() {
        const hei = this.state.height - ReactDOM.findDOMNode(this.lv).offsetTop;

        setTimeout(() => {
            this.rData = genData();
            this.setState({
                dataSource: this.state.dataSource.cloneWithRows(genData()),
                height: hei,
                refreshing: false,
                isLoading: false,
            });
        }, 1500);
    }

    onRefresh = () => {
        this.setState({ refreshing: true, isLoading: true });
        // simulate initial Ajax
        setTimeout(() => {
            this.rData = genData();
            this.setState({
                dataSource: this.state.dataSource.cloneWithRows(this.rData),
                refreshing: false,
                isLoading: false,
            });
        }, 600);
    };

    onEndReached = (event) => {
        // load new data
        // hasMore: from backend data, indicates whether it is the last page, here is false
        if (this.state.isLoading && !this.state.hasMore) {
            return;
        }
        console.log('reach end', event);
        this.setState({ isLoading: true });
        setTimeout(() => {
            this.rData = [...this.rData, ...genData(++pageIndex)];
            this.setState({
                dataSource: this.state.dataSource.cloneWithRows(this.rData),
                isLoading: false,
            });
        }, 1000);
    };

    render() {
        const separator = (sectionID, rowID) => (
            <div
                key={`${sectionID}-${rowID}`}
                style={{
                    backgroundColor: '#F5F5F9',
                    height: 8,
                    borderTop: '1px solid #ECECED',
                    borderBottom: '1px solid #ECECED',
                }}/>
        );
        let index = data.length - 1;
        const row = (rowData, sectionID, rowID) => {
            if (index < 0) {
                index = data.length - 1;
            }
            const obj = data[index--];
            return (
                <div key={rowID}
                     style={{
                         padding: '0 15px',
                         backgroundColor: 'white',
                     }}>
                    <div style={{ height: '50px', lineHeight: '50px', color: '#888', fontSize: '18px', borderBottom: '1px solid #ddd' }}>
                        {obj.title}
                    </div>
                    <div style={{ display: '-webkit-box', display: 'flex', padding: '15px' }}>
                        <img style={{ height: '63px', width: '63px', marginRight: '15px' }} src={obj.img} alt="" />
                        <div style={{ display: 'inline-block' }}>
                            <div style={{ marginBottom: '8px', color: '#000', fontSize: '16px', overflow: 'hidden', textOverflow: 'ellipsis', whiteSpace: 'nowrap', maxWidth: '250px' }}>{obj.des}-{rowData}</div>
                            <div style={{ fontSize: '16px' }}><span style={{ fontSize: '30px', color: '#FF6E27' }}>{rowID}</span> 元/任务</div>
                        </div>
                    </div>
                </div>
            );
        };
        return (<div>
            <Button
                style={{ margin: '30px 15px' }}
                inline
                onClick={() => this.setState({ useBodyScroll: !this.state.useBodyScroll })}
            >
                {this.state.useBodyScroll ? 'useBodyScroll' : 'partial scroll'}
            </Button>
            <ListView
                key={this.state.useBodyScroll ? '0' : '1'}
                ref={el => this.lv = el}
                dataSource={this.state.dataSource}
                renderHeader={() => <span>Pull to refresh</span>}
                renderFooter={() => (<div style={{ padding: 30, textAlign: 'center' }}>
                    {this.state.isLoading ? 'Loading...' : 'Loaded'}
                </div>)}
                renderRow={row}
                renderSeparator={separator}
                useBodyScroll={this.state.useBodyScroll}
                style={this.state.useBodyScroll ? {} : {
                    height: this.state.height,
                    border: '1px solid #ddd',
                    margin: '5px 0',
                }}
                pullToRefresh={<PullToRefresh
                    refreshing={this.state.refreshing}
                    onRefresh={this.onRefresh}/>}
                onEndReached={this.onEndReached}
                pageSize={5}/>
        </div>);
    }
}
module.exports=YYPullToRefresh;