Delete Rows with Ctrl+Delete (React)

Use Fn+Delete on Mac keyboards. You can handle keyboard events in the FlexGrid control by adding HTML event listeners to the grid's hostElement. For example, the grid below listens to the 'keydown' event. If you press Ctrl+Delete, it shows a prompt and deletes the current row.

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 } from 'react'; import useEvent from 'react-use-event-hook'; import * as wjGrid from '@mescius/wijmo.react.grid'; import * as wjcCore from '@mescius/wijmo'; import * as wjInput from '@mescius/wijmo.react.input'; import './app.css'; import { data } from './data'; function App() { const popupRef = useRef(null); const initializeGrid = useEvent((flex) => { flex.hostElement.addEventListener("keydown", (e) => { let view = flex.collectionView; // looking for ctrl+Delete if (e.ctrlKey && e.keyCode == wjcCore.Key.Delete && view.currentItem) { // prevent the grid from getting the key e.preventDefault(); // confirm row deletion popupRef.current.show(true, (sender) => { // delete the row if (sender.dialogResult == "wj-hide-ok") { view.remove(view.currentItem); } // return focus to the grid flex.focus(); }); } }, true); }); const initPopup = useEvent((popup) => { popupRef.current = popup; }); return (<div className="container-fluid"> <wjGrid.FlexGrid allowAddNew={true} initialized={initializeGrid} itemsSource={data}/> <wjInput.Popup className="modal-content" initialized={initPopup}> <div className="modal-header">Deleting Row</div> <div className="modal-body">Do you really want to delete this row?</div> <div className="modal-footer"> <button className="btn btn-primary wj-hide-ok">Yes</button> <button className="btn btn-default wj-hide">No</button> </div> </wjInput.Popup> </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>MESCIUS Wijmo Wijmo FlexGrid Keyboard Events</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: 300px; margin: 10px 0; }
function getData() { // create some random data let countries = 'US,Canada,Mexico,Germany,UK,France,Italy,Greece,Holland,Japan,Korea,China'.split(','), data = []; for (let i = 0; i < 1000; i++) { data.push({ id: i, country: countries[i % countries.length], sales: Math.random() * 10000, expenses: Math.random() * 5000, active: i % 3 == 0 }); } return data; } export const data = getData();
(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);