70 lines
2.6 KiB
TypeScript
70 lines
2.6 KiB
TypeScript
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/* sheetjs (C) SheetJS -- https://sheetjs.com */
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import './App.css'
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import { useCallback, useState } from '@lynx-js/react'
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import SheetJSLogo from './assets/SheetJS-logo.png';
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import { read, utils, WorkSheet } from 'xlsx';
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const make_width = (ws: WorkSheet): number[] => {
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const aoa = utils.sheet_to_json(ws, { header: 1 }), res: number[] = [];
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aoa.forEach((r: any) => { r.forEach((c: any, C: any) => { res[C] = Math.max(res[C] || 60, String(c).length * 10); }); });
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for (let C = 0; C < res.length; ++C) if (!res[C]) res[C] = 60;
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return res;
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};
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export function App() {
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const [data, setData] = useState<any[]>([
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"SheetJS".split(""),
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[5, 4, 3, 3, 7, 9, 5],
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[8, 6, 7, 5, 3, 0, 9]
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]);
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const [widths, setWidths] = useState<number[]>(Array.from({ length: 7 }, () => 20));
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const importFile = useCallback(async () => {
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try {
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const ab = await (await fetch("https://docs.sheetjs.com/pres.numbers")).arrayBuffer();
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const wb = read(ab);
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/* convert first worksheet to AOA */
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const wsname = wb.SheetNames[0];
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const ws = wb.Sheets[wsname];
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const data = utils.sheet_to_json(ws, { header: 1 });
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/* update state */
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setData(data);
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console.log(data);
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setWidths(make_width(ws));
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} catch (err) {
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console.log("importFile Error", "Error " + ((err as any).message || err));
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}
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}, []);
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return (
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<view className='App'>
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<text className="Title">
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<image className="Logo" src={SheetJSLogo} /> SheetJS × React Lynx
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</text>
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<view className="Button" bindtap={importFile}>
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<text>IMPORT DATA FROM A SPREADSHEET</text>
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</view>
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<text style={{ margin: '8px', fontWeight: '600'}}>Current Data</text>
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<view className='Table'>
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{data.map((row, rowIndex) => (
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<view key={`row-${rowIndex}`} className="Row">
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{Array.isArray(row) && row.map((cell, cellIndex) => (
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<view
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key={`cell-${rowIndex}-${cellIndex}`}
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className="Cell"
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style={{ width: `${widths[cellIndex]}px` }}
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>
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<text>{cell}</text>
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</view>
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))}
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</view>
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))}
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</view>
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<view style={{ flex: 1 }}></view>
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</view>
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)
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}
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