Progress Indicator (PDF) (React)

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

The progress argument of the PdfWebWorkerClient.exportGrid method is used to track the export progress, the web worker's terminate method is used to cancel the export.

This example uses React.

import '@grapecity/wijmo.styles/wijmo.css'; import 'bootstrap.css'; import './app.css'; // import * as React from 'react'; import * as ReactDOM from 'react-dom'; import * as gridPdf from '@grapecity/wijmo.grid.pdf'; // import * as wjcGrid from '@grapecity/wijmo.react.grid'; import * as wjcGauge from '@grapecity/wijmo.react.gauge'; import { getData } from './data'; // class App extends React.Component { // constructor(props) { super(props); this._data = getData(3000); // this.state = { progress: 0 }; } // render() { return <div className="container-fluid"> <wjcGrid.FlexGrid className="grid" autoGenerateColumns={false} itemsSource={this._data} initialized={this.initializeGrid.bind(this)}> <wjcGrid.FlexGridColumn header="ID" binding="id"></wjcGrid.FlexGridColumn> <wjcGrid.FlexGridColumn header="Country" binding="country"></wjcGrid.FlexGridColumn> <wjcGrid.FlexGridColumn header="Product" binding="product"></wjcGrid.FlexGridColumn> <wjcGrid.FlexGridColumn header="Amount" binding="amount" format="c"></wjcGrid.FlexGridColumn> <wjcGrid.FlexGridColumn header="Pending" binding="amount2" format="c2"></wjcGrid.FlexGridColumn> <wjcGrid.FlexGridColumn header="Discount" binding="discount" format="p1"></wjcGrid.FlexGridColumn> <wjcGrid.FlexGridColumn header="Active" binding="active"></wjcGrid.FlexGridColumn> </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={this.state.progress} showText={"Value"}> </wjcGauge.LinearGauge> <button className="btn btn-default" onClick={this.export.bind(this)}>Export</button> <button className="btn btn-default" onClick={this.cancel.bind(this)}>Cancel</button> </div> </div> </div>; } // initializeGrid(source) { this._flexGrid = source; } // export() { this.cancel(); // this._worker = this.loadWorker('./export-grid.js', () => { gridPdf.PdfWebWorkerClient.exportGrid(this._worker, this._flexGrid, 'FlexGrid.pdf', { scaleMode: gridPdf.ScaleMode.PageWidth, styles: { cellStyle: { backgroundColor: '#ffffff', borderColor: '#c6c6c6' }, altCellStyle: { backgroundColor: '#f9f9f9' }, groupCellStyle: { backgroundColor: '#dddddd' }, headerCellStyle: { backgroundColor: '#eaeaea' } } }, null, progress => this.setState({ progress: progress * 100 })); }); } // cancel() { if (this._worker) { this._worker.terminate(); } this.setState({ progress: 0 }); } // // Creates a web worker that executes a module from the specified URL. loadWorker(url, ready) { let worker = new Worker('src/workers/worker-loader.js'); // worker.addEventListener('message', (e) => { if (e.data === '#ready#') { ready(); } }); // worker.postMessage({ url: url }); // return worker; } // componentWillUnmount() { if (this._worker) { this._worker.terminate(); } } } // ReactDOM.render(<App />, document.getElementById('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="node_modules/systemjs/dist/system.src.js"></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; }
export 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; }
import { PdfWebWorker } from '@grapecity/wijmo.grid.pdf'; // PdfWebWorker.initExportGrid();
(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', '@grapecity/wijmo': 'npm:@grapecity/wijmo/index.js', '@grapecity/wijmo.input': 'npm:@grapecity/wijmo.input/index.js', '@grapecity/wijmo.styles': 'npm:@grapecity/wijmo.styles', '@grapecity/wijmo.cultures': 'npm:@grapecity/wijmo.cultures', '@grapecity/wijmo.chart': 'npm:@grapecity/wijmo.chart/index.js', '@grapecity/wijmo.chart.analytics': 'npm:@grapecity/wijmo.chart.analytics/index.js', '@grapecity/wijmo.chart.animation': 'npm:@grapecity/wijmo.chart.animation/index.js', '@grapecity/wijmo.chart.annotation': 'npm:@grapecity/wijmo.chart.annotation/index.js', '@grapecity/wijmo.chart.finance': 'npm:@grapecity/wijmo.chart.finance/index.js', '@grapecity/wijmo.chart.finance.analytics': 'npm:@grapecity/wijmo.chart.finance.analytics/index.js', '@grapecity/wijmo.chart.hierarchical': 'npm:@grapecity/wijmo.chart.hierarchical/index.js', '@grapecity/wijmo.chart.interaction': 'npm:@grapecity/wijmo.chart.interaction/index.js', '@grapecity/wijmo.chart.radar': 'npm:@grapecity/wijmo.chart.radar/index.js', '@grapecity/wijmo.chart.render': 'npm:@grapecity/wijmo.chart.render/index.js', '@grapecity/wijmo.chart.webgl': 'npm:@grapecity/wijmo.chart.webgl/index.js', '@grapecity/wijmo.gauge': 'npm:@grapecity/wijmo.gauge/index.js', '@grapecity/wijmo.grid': 'npm:@grapecity/wijmo.grid/index.js', '@grapecity/wijmo.grid.detail': 'npm:@grapecity/wijmo.grid.detail/index.js', '@grapecity/wijmo.grid.filter': 'npm:@grapecity/wijmo.grid.filter/index.js', '@grapecity/wijmo.grid.search': 'npm:@grapecity/wijmo.grid.search/index.js', '@grapecity/wijmo.grid.grouppanel': 'npm:@grapecity/wijmo.grid.grouppanel/index.js', '@grapecity/wijmo.grid.multirow': 'npm:@grapecity/wijmo.grid.multirow/index.js', '@grapecity/wijmo.grid.transposed': 'npm:@grapecity/wijmo.grid.transposed/index.js', '@grapecity/wijmo.grid.pdf': 'npm:@grapecity/wijmo.grid.pdf/index.js', '@grapecity/wijmo.grid.sheet': 'npm:@grapecity/wijmo.grid.sheet/index.js', '@grapecity/wijmo.grid.xlsx': 'npm:@grapecity/wijmo.grid.xlsx/index.js', '@grapecity/wijmo.grid.selector': 'npm:@grapecity/wijmo.grid.selector/index.js', '@grapecity/wijmo.grid.cellmaker': 'npm:@grapecity/wijmo.grid.cellmaker/index.js', '@grapecity/wijmo.grid.immutable': 'npm:@grapecity/wijmo.grid.immutable/index.js', '@grapecity/wijmo.touch': 'npm:@grapecity/wijmo.touch/index.js', '@grapecity/wijmo.cloud': 'npm:@grapecity/wijmo.cloud/index.js', '@grapecity/wijmo.nav': 'npm:@grapecity/wijmo.nav/index.js', '@grapecity/wijmo.odata': 'npm:@grapecity/wijmo.odata/index.js', '@grapecity/wijmo.olap': 'npm:@grapecity/wijmo.olap/index.js', '@grapecity/wijmo.pdf': 'npm:@grapecity/wijmo.pdf/index.js', '@grapecity/wijmo.viewer': 'npm:@grapecity/wijmo.viewer/index.js', '@grapecity/wijmo.xlsx': 'npm:@grapecity/wijmo.xlsx/index.js', '@grapecity/wijmo.undo': 'npm:@grapecity/wijmo.undo/index.js', '@grapecity/wijmo.interop.grid': 'npm:@grapecity/wijmo.interop.grid/index.js', "@grapecity/wijmo.react.chart.analytics": "npm:@grapecity/wijmo.react.chart.analytics/index.js", "@grapecity/wijmo.react.chart.animation": "npm:@grapecity/wijmo.react.chart.animation/index.js", "@grapecity/wijmo.react.chart.annotation": "npm:@grapecity/wijmo.react.chart.annotation/index.js", "@grapecity/wijmo.react.chart.finance.analytics": "npm:@grapecity/wijmo.react.chart.finance.analytics/index.js", "@grapecity/wijmo.react.chart.finance": "npm:@grapecity/wijmo.react.chart.finance/index.js", "@grapecity/wijmo.react.chart.hierarchical": "npm:@grapecity/wijmo.react.chart.hierarchical/index.js", "@grapecity/wijmo.react.chart.interaction": "npm:@grapecity/wijmo.react.chart.interaction/index.js", "@grapecity/wijmo.react.chart.radar": "npm:@grapecity/wijmo.react.chart.radar/index.js", "@grapecity/wijmo.react.chart": "npm:@grapecity/wijmo.react.chart/index.js", "@grapecity/wijmo.react.core": "npm:@grapecity/wijmo.react.core/index.js", "@grapecity/wijmo.react.gauge": "npm:@grapecity/wijmo.react.gauge/index.js", "@grapecity/wijmo.react.grid.detail": "npm:@grapecity/wijmo.react.grid.detail/index.js", "@grapecity/wijmo.react.grid.filter": "npm:@grapecity/wijmo.react.grid.filter/index.js", "@grapecity/wijmo.react.grid.grouppanel": "npm:@grapecity/wijmo.react.grid.grouppanel/index.js", '@grapecity/wijmo.react.grid.search': 'npm:@grapecity/wijmo.react.grid.search/index.js', "@grapecity/wijmo.react.grid.multirow": "npm:@grapecity/wijmo.react.grid.multirow/index.js", "@grapecity/wijmo.react.grid.sheet": "npm:@grapecity/wijmo.react.grid.sheet/index.js", '@grapecity/wijmo.react.grid.transposed': 'npm:@grapecity/wijmo.react.grid.transposed/index.js', '@grapecity/wijmo.react.grid.immutable': 'npm:@grapecity/wijmo.react.grid.immutable/index.js', "@grapecity/wijmo.react.grid": "npm:@grapecity/wijmo.react.grid/index.js", "@grapecity/wijmo.react.input": "npm:@grapecity/wijmo.react.input/index.js", "@grapecity/wijmo.react.olap": "npm:@grapecity/wijmo.react.olap/index.js", "@grapecity/wijmo.react.viewer": "npm:@grapecity/wijmo.react.viewer/index.js", "@grapecity/wijmo.react.nav": "npm:@grapecity/wijmo.react.nav/index.js", "@grapecity/wijmo.react.base": "npm:@grapecity/wijmo.react.base/index.js", 'jszip': 'npm:jszip/dist/jszip.js', 'react': 'npm:react/umd/react.production.min.js', 'react-dom': 'npm:react-dom/umd/react-dom.production.min.js', 'redux': 'npm:redux/dist/redux.min.js', 'react-redux': 'npm:react-redux/dist/react-redux.min.js', 'bootstrap.css': 'npm:bootstrap/dist/css/bootstrap.min.css', 'css': 'npm:systemjs-plugin-css/css.js', 'plugin-babel': 'npm:systemjs-plugin-babel/plugin-babel.js', 'systemjs-babel-build':'npm:systemjs-plugin-babel/systemjs-babel-browser.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);