Progress Indicator (React)

The sample demonstrates how to export FlexGrid content to XLSX files asynchronously, display a progress indicator and cancel the export.

The onProgress argument of the FlexGridXlsxConverter's saveAsync method is used to track the progress of converting and exporting your data into Excel's .xlsx file format, and the cancelAsync method is used to cancel the export.

Learn about FlexGrid | FlexGrid API Reference

This example uses React.

import 'bootstrap.css'; import '@mescius/wijmo.styles/wijmo.css'; import ReactDOM from 'react-dom/client'; import React, { useRef, useState } from 'react'; import useEvent from 'react-use-event-hook'; import * as gridXlsx from '@mescius/wijmo.grid.xlsx'; import * as wjcGrid from '@mescius/wijmo.react.grid'; import * as wjcGauge from '@mescius/wijmo.react.gauge'; import './app.css'; import { data } from './data'; function App() { const [progress, setProgress] = useState(0); const flexRef = useRef(null); const initializeGrid = useEvent((source) => { flexRef.current = source; }); const handleExport = () => { if (flexRef.current) { gridXlsx.FlexGridXlsxConverter.saveAsync(flexRef.current, {}, 'FlexGrid.xlsx', undefined, undefined, progress => setProgress(progress), true); } }; const handleCancel = () => { gridXlsx.FlexGridXlsxConverter.cancelAsync(() => setProgress(0)); }; return (<div className="container-fluid"> <wjcGrid.FlexGrid className="grid" autoGenerateColumns={false} itemsSource={data} initialized={initializeGrid}> <wjcGrid.FlexGridColumn header="ID" binding="id"/> <wjcGrid.FlexGridColumn header="Country" binding="country"/> <wjcGrid.FlexGridColumn header="Product" binding="product"/> <wjcGrid.FlexGridColumn header="Amount" binding="amount" format="c"/> <wjcGrid.FlexGridColumn header="Pending" binding="amount2" format="c2"/> <wjcGrid.FlexGridColumn header="Discount" binding="discount" format="p1"/> <wjcGrid.FlexGridColumn header="Active" binding="active"/> </wjcGrid.FlexGrid> <div className="row"> <div className="col-md-6 col-xs-12 well well-sm"> <wjcGauge.LinearGauge isReadOnly={true} min={0} max={100} value={progress} showText={"Value"}/> <button className="btn btn-default" onClick={handleExport}>Export</button> <button className="btn btn-default" onClick={handleCancel}>Cancel</button> </div> </div> </div>); } const container = document.getElementById('app'); if (container) { const root = ReactDOM.createRoot(container); root.render(<App />); }
<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <title>Progress Indicator</title> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <!-- SystemJS --> <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.19.40/system.src.js" integrity="sha512-G6mEj6h18+m3MvzdviSDfPle/TfH0//cXcB33AKlNR/Rha0yQsKefDZKRTkIZos97HEGq2JMV1RT5ybMoQ3WsQ==" crossorigin="anonymous"></script> <script src="systemjs.config.js"></script> <script> System.import('./src/app'); </script> </head> <body> <div id="app"></div> </body> </html>
.wj-flexgrid { height: 400px; margin: 6px 0; } .wj-gauge { margin: 20px auto; }
function getData(count) { let countries = ['US', 'Germany', 'UK', 'Japan', 'Italy', 'Greece'], products = ['Widget', 'Gadget', 'Doohickey'], data = []; // for (let i = 0; i < count; i++) { let countryId = Math.floor(Math.random() * countries.length), productId = Math.floor(Math.random() * products.length); // let item = { id: i, country: countries[countryId], product: products[productId], amount: Math.random() * 10000, amount2: Math.random() * 10000, discount: Math.random() / 4, active: i % 4 == 0 }; // data.push(item); } // return data; } export const data = getData(5000);
(function (global) { System.config({ transpiler: 'plugin-babel', babelOptions: { es2015: true, react: true }, meta: { '*.css': { loader: 'css' } }, paths: { // paths serve as alias 'npm:': 'node_modules/' }, // map tells the System loader where to look for things map: { 'jszip': 'npm:jszip/dist/jszip.js', '@mescius/wijmo': 'npm:@mescius/wijmo/index.js', '@mescius/wijmo.input': 'npm:@mescius/wijmo.input/index.js', '@mescius/wijmo.styles': 'npm:@mescius/wijmo.styles', '@mescius/wijmo.cultures': 'npm:@mescius/wijmo.cultures', '@mescius/wijmo.chart': 'npm:@mescius/wijmo.chart/index.js', '@mescius/wijmo.chart.analytics': 'npm:@mescius/wijmo.chart.analytics/index.js', '@mescius/wijmo.chart.animation': 'npm:@mescius/wijmo.chart.animation/index.js', '@mescius/wijmo.chart.annotation': 'npm:@mescius/wijmo.chart.annotation/index.js', '@mescius/wijmo.chart.finance': 'npm:@mescius/wijmo.chart.finance/index.js', '@mescius/wijmo.chart.finance.analytics': 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"npm:react-use-event-hook/dist/esm/useEvent.js", }, // packages tells the System loader how to load when no filename and/or no extension packages: { src: { defaultExtension: 'jsx' }, "node_modules": { defaultExtension: 'js' }, } }); })(this);