Scrolling and ViewRange

When the user selects a cell using the mouse or keyboard, the FlexGrid automatically ensures it is visible by calling the scrollIntoView method.

The scrollIntoView method causes the grid to scroll as needed so the requested cell is within the current viewRange. The grid will scroll the minimum amount needed to show the cell, so it may become visible at the top, middle, or bottom of the view range.

Learn about FlexGrid | FlexGrid API Reference

import 'bootstrap.css'; import '@grapecity/wijmo.styles/wijmo.css'; import './styles.css'; import * as wjGrid from '@grapecity/wijmo.grid'; import * as wjCore from '@grapecity/wijmo'; // document.readyState === 'complete' ? init() : window.onload = init; // function init() { // // create some random data var countries = 'US,Germany,UK,Japan,Sweden,Norway,Denmark'.split(','), data = []; for (var i = 0; i < 200; i++) { data.push({ id: i, country: countries[i % countries.length], active: i % 5 != 0, downloads: Math.round(Math.random() * 200000), sales: Math.random() * 100000, expenses: Math.random() * 50000 }); } // // auto-generated columns var theGrid = new wjGrid.FlexGrid('#theGrid', { itemsSource: data }); // // scroll into view document.getElementById('scrollIntoView').addEventListener('click', function () { theGrid.scrollIntoView(100, -1); }); // // set top cell document.getElementById('scrollToTop').addEventListener('click', function () { if (true) { // // get cell rect, adjust scrollPosition.y to bring it to the top var rc = theGrid.cells.getCellBoundingRect(100, 0, true); theGrid.scrollPosition = new wjCore.Point(theGrid.scrollPosition.x, -rc.top); // } else { // // simpler but less efficient (requires a timeOut) theGrid.scrollIntoView(theGrid.rows.length - 1, -1); setTimeout(function () { theGrid.scrollIntoView(100, -1); }); } }); }
<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <title>MESCIUS Wijmo FlexGrid Scrolling and View Range</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 class="container-fluid"> <button id="scrollIntoView" class="btn btn-default"> Scroll Row 100 Into View </button> <button id="scrollToTop" class="btn btn-default"> Set Top Cell to Row 100 </button> <div id="theGrid"> </div> </div> </body> </html>
.wj-flexgrid { max-height: 200px; margin: 12px 0; } body { margin-bottom: 20px; }
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