forked from sheetjs/docs.sheetjs.com
83 lines
3.1 KiB
TypeScript
83 lines
3.1 KiB
TypeScript
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import { useState, useCallback, useEffect, useRef, ChangeEvent } from 'react';
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import { utils, read, writeFileXLSX, WorkBook } from 'xlsx';
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import { DataEditor, GridCellKind, GridCell, GridColumn, Item, DataEditorRef, EditableGridCell } from '@glideapps/glide-data-grid';
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import "@glideapps/glide-data-grid/dist/index.css";
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// this will store the raw data objects
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let data: any[] = [];
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// this will store the header names
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let header: string[] = [];
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function App() {
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const [cols, setCols] = useState<GridColumn[]>([]); // gdg column objects
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const [rows, setRows] = useState<number>(0); // number of rows
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const ref = useRef<DataEditorRef>(null); // gdg ref
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// read/write between gdg and the backing data store
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const getContent = useCallback((cell: Item): GridCell => {
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const [col, row] = cell;
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return {
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kind: GridCellKind.Text,
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allowOverlay: true,
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readonly: false,
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displayData: String(data[row]?.[header[col]]??""),
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data: data[row]?.[header[col]],
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};
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}, []);
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const onCellEdited = useCallback((cell: Item, newValue: EditableGridCell) => {
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const [ col, row ] = cell;
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data[row][header[col]] = newValue.data;
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}, []);
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// update the data store from a workbook object
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const parse_wb = (wb: WorkBook) => {
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const sheet = wb.Sheets[wb.SheetNames[0]];
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data = utils.sheet_to_json<any>(sheet);
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const range = utils.decode_range(sheet["!ref"]??"A1"); range.e.r = range.s.r;
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header = utils.sheet_to_json<string[]>(sheet, {header: 1, range})[0];
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setCols(header.map(h => ({title: h, id: h} as GridColumn)));
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setRows(data.length);
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if(data.length > 0) {
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let cells = data.map(
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(_,R) => Array.from({length:header.length}, (_,C) => ({cell: ([C,R] as Item)}))
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).flat();
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ref.current?.updateCells(cells);
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}
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};
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// file input element onchange event handler
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const onChange = useCallback(async (e: ChangeEvent<HTMLInputElement>) => {
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if(!e.target?.files) return;
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parse_wb(read(await e.target.files[0].arrayBuffer()));
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}, []);
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// when the component loads, fetch and display a sample workbook
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useEffect(() => {
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(async() => {
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parse_wb(read(await (await fetch("https://sheetjs.com/pres.numbers")).arrayBuffer()));
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})();
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}, []);
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// export data
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const exportXLSX = useCallback(() => {
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// generate worksheet using data with the order specified in the columns array
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const ws = utils.json_to_sheet(data, {header: cols.map(c => c.id ?? c.title)});
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// rewrite header row with titles
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utils.sheet_add_aoa(ws, [cols.map(c => c.title ?? c.id)], {origin: "A1"});
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// create workbook
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const wb = utils.book_new();
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utils.book_append_sheet(wb, ws, "Export"); // replace with sheet name
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// download file
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writeFileXLSX(wb, "sheetjs-gdg.xlsx");
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}, []);
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return ( <>
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<input type="file" onChange={onChange} />
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<button onClick={exportXLSX}><b>Export XLSX!</b></button>
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<div className="App">
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<DataEditor getCellContent={getContent} columns={cols} rows={rows} onCellEdited={onCellEdited} ref={ref}/>
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</div>
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<div id="portal"></div>
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</>
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)
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}
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export default App;
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