Mouse Events

To handle mouse events, add a listener to the FlexGrid contrl's hostElement and use the hitTest method to determine which grid panel and cell were clicked. The grid below has a handler attached to the 'mousemove' event, and shows information about the element under the mouse.

Learn about FlexGrid | FlexGrid API Reference

import 'bootstrap.css'; import '@mescius/wijmo.styles/wijmo.css'; import './styles.css'; import * as wjGrid from '@mescius/wijmo.grid'; import * as wjCore from '@mescius/wijmo'; // document.readyState === 'complete' ? init() : window.onload = init; // function init() { // // create some random data var countries = 'US,Germany,UK,Japan'.split(','); var data = []; for (var i = 0; i < 20; i++) { data.push({ id: i, country: countries[i % countries.length], sales: Math.random() * 10000, expenses: Math.random() * 5000, overdue: i % 4 == 0 }); } // // bind a grid to the data var theGrid = new wjGrid.FlexGrid('#theGrid', { itemsSource: new wjCore.CollectionView(data, { groupDescriptions: ['country'] // group data by country }), formatItem: function (s, e) { if (e.panel == s.cells) { if (s.columns[e.col].binding == 'country' && !(s.rows[e.row] instanceof wjGrid.GroupRow)) { if (s.editRange != null && s.editRange.contains(e.row, e.col)) { let spanEle = document.createElement('span'); spanEle.className = 'my-button'; spanEle.innerHTML = '&#x2b24;'; s.activeEditor.style.width = '75%'; e.cell.insertBefore(spanEle, s.activeEditor); } else { let html = '<span class="my-button">&#x2b24;</span>' + e.cell.innerHTML; e.cell.innerHTML = html; } } } } }); // // monitor and log mouse moves var logEl = document.getElementById('log'); theGrid.addEventListener(theGrid.hostElement, 'mousemove', function (e) { var ht = theGrid.hitTest(e); var logText = wjCore.format('panel <b>{cellType}</b> row <b>{row}</b> col <b>{col}</b>', { cellType: wjGrid.CellType[ht.cellType], row: ht.row, col: ht.col }); if (e.target.classList.contains('my-button')) { logText += ' (fake button!)'; } else if (e.target.tagName == 'INPUT' && e.target.type == 'checkbox') { logText += ' (checkbox!)'; } else if (ht.panel == theGrid.cells) { if (theGrid.rows[ht.row] instanceof wjGrid.GroupRow) { logText += ' (group row)'; } else { logText += ' (value: <b>' + theGrid.cells.getCellData(ht.row, ht.col, true) + '</b>)'; } } logEl.innerHTML = logText; }); }
<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <title>MESCIUS Wijmo FlexGrid Mouse Events</title> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <!-- SystemJS --> <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.21.5/system.src.js" integrity="sha512-skZbMyvYdNoZfLmiGn5ii6KmklM82rYX2uWctBhzaXPxJgiv4XBwJnFGr5k8s+6tE1pcR1nuTKghozJHyzMcoA==" crossorigin="anonymous"></script> <script src="systemjs.config.js"></script> <script> System.import('./src/app'); </script> </head> <body> <div class="container-fluid"> <div id="log"> please move the mouse over the grid </div> <div id="theGrid"> </div> </div> </body> </html>
.wj-flexgrid { max-height: 220px; } #log { font-style: italic; text-align: center; margin-bottom: 10px; opacity: .5; } .my-button { opacity: .5; margin: 0 6px; } .my-button:hover { color: orange; } body { margin-bottom: 24px; }
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