85 lines
3.3 KiB
JavaScript
85 lines
3.3 KiB
JavaScript
|
/* sheetjs (C) 2013-present SheetJS -- http://sheetjs.com */
|
|||
|
|
import { utils } from 'xlsx';
|
|||
|
|
import React, { Component } from 'react';
|
|||
|
|
import { AppRegistry, StyleSheet, Text, Button, Alert, Image, ScrollView } from 'react-native';
|
|||
|
|
import { Table, Row, Rows, TableWrapper } from 'react-native-table-component';
|
|||
|
|
|
|||
|
|
const make_width = ws => {
|
|||
|
|
const aoa = utils.sheet_to_json(ws, {header:1}), res = [];
|
|||
|
|
aoa.forEach((r) => { r.forEach((c, C) => { res[C] = Math.max(res[C]||60, String(c).length * 10); }); });
|
|||
|
|
for(let C = 0; C < res.length; ++C) if(!res[C]) res[C] = 60;
|
|||
|
|
return res;
|
|||
|
|
};
|
|||
|
|
|
|||
|
|
class SheetJSRN extends Component {
|
|||
|
|
constructor(props) {
|
|||
|
|
super(props);
|
|||
|
|
this.state = {
|
|||
|
|
data: ["SheetJS".split(""),[5,4,3,3,7,9,5],[8,6,7,5,3,0,9]],
|
|||
|
|
widthArr: Array.from({length:7}, () => 20)
|
|||
|
|
};
|
|||
|
|
this.importFile = this.importFile.bind(this);
|
|||
|
|
this.exportFile = this.exportFile.bind(this);
|
|||
|
|
};
|
|||
|
|
|
|||
|
|
async importFile() { try {
|
|||
|
|
/* select and parse file */
|
|||
|
|
const wb = await pickAndParse();
|
|||
|
|
|
|||
|
|
/* convert first worksheet to AOA */
|
|||
|
|
const wsname = wb.SheetNames[0];
|
|||
|
|
const ws = wb.Sheets[wsname];
|
|||
|
|
const data = utils.sheet_to_json(ws, {header:1});
|
|||
|
|
|
|||
|
|
/* update state */
|
|||
|
|
this.setState({ data: data, widthArr: make_width(ws) });
|
|||
|
|
} catch(err) { Alert.alert("importFile Error", "Error " + err.message); }}
|
|||
|
|
|
|||
|
|
async exportFile() { try {
|
|||
|
|
/* convert AOA back to worksheet */
|
|||
|
|
const ws = utils.aoa_to_sheet(this.state.data);
|
|||
|
|
|
|||
|
|
/* build new workbook */
|
|||
|
|
const wb = utils.book_new();
|
|||
|
|
utils.book_append_sheet(wb, ws, "SheetJS");
|
|||
|
|
|
|||
|
|
/* write file */
|
|||
|
|
const res = await writeWorkbook(wb);
|
|||
|
|
Alert.alert("exportFile success", "Exported to " + res);
|
|||
|
|
} catch(err) { Alert.alert("exportFile Error", "Error " + err.message); }}
|
|||
|
|
|
|||
|
|
render() { return (
|
|||
|
|
<ScrollView contentContainerStyle={styles.container} vertical={true}>
|
|||
|
|
<Text style={styles.welcome}> </Text>
|
|||
|
|
<Text style={styles.welcome}> <Image source={require("./logo.png")} style={styles.image}/> SheetJS × React Native</Text>
|
|||
|
|
<Button onPress={this.importFile} title="Import data from a spreadsheet" color="#841584" />
|
|||
|
|
<Button disabled={!this.state.data.length} onPress={this.exportFile} title="Export data to XLSX" color="#841584" />
|
|||
|
|
<Text style={styles.bolded}>Current Data</Text>
|
|||
|
|
<ScrollView style={styles.table} horizontal={true} >
|
|||
|
|
<Table style={styles.table}>
|
|||
|
|
<TableWrapper>
|
|||
|
|
<Row data={this.state.data[0]} style={styles.thead} textStyle={styles.text} widthArr={this.state.widthArr}/>
|
|||
|
|
</TableWrapper>
|
|||
|
|
<ScrollView vertical={true}>
|
|||
|
|
<TableWrapper>
|
|||
|
|
<Rows data={this.state.data.slice(1)} style={styles.tr} textStyle={styles.text} widthArr={this.state.widthArr}/>
|
|||
|
|
</TableWrapper>
|
|||
|
|
</ScrollView>
|
|||
|
|
</Table>
|
|||
|
|
</ScrollView>
|
|||
|
|
</ScrollView>
|
|||
|
|
); };
|
|||
|
|
};
|
|||
|
|
|
|||
|
|
const styles = StyleSheet.create({
|
|||
|
|
container: { flex: 1, justifyContent: 'center', alignItems: 'center', backgroundColor: '#F5FCFF' },
|
|||
|
|
welcome: { fontSize: 20, textAlign: 'center', margin: 10 },
|
|||
|
|
bolded: { textAlign: 'center', color: '#333333', marginBottom: 5, fontWeight: "bold" },
|
|||
|
|
thead: { height: 40, backgroundColor: '#f1f8ff' },
|
|||
|
|
tr: { height: 30 },
|
|||
|
|
text: { marginLeft: 5, },
|
|||
|
|
table: { width: "100%" },
|
|||
|
|
image: { height: 16, width: 16 }
|
|||
|
|
});
|
|||
|
|
|
|||
|
|
AppRegistry.registerComponent('SheetJSRN', () => SheetJSRN);
|