Persisting the Grid State

This example shows how you can save and restore the FlexGrid state, including columnLayout, sortDescriptions, and filter definitions. Try reordering, resizing, sorting, and filtering the columns on the grid below. Then press the "Save" button to save the state to local storage. Run the sample again and press the "Restore" button to restore the layout that you saved.

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 wjGridFilter from '@grapecity/wijmo.grid.filter'; import * as wjCore from '@grapecity/wijmo'; import { getData } from './data'; // document.readyState === 'complete' ? init() : window.onload = init; // function init() { // // create a grid with a filter var theGrid = new wjGrid.FlexGrid('#theGrid', { itemsSource: getData() }); var theFilter = new wjGridFilter.FlexGridFilter(theGrid); // // save/restore grid state document.getElementById('btnSave').addEventListener('click', function () { var state = { columns: theGrid.columnLayout, filterDefinition: theFilter.filterDefinition, sortDescriptions: theGrid.collectionView.sortDescriptions.map(function (sortDesc) { return { property: sortDesc.property, ascending: sortDesc.ascending }; }) }; localStorage['gridState'] = JSON.stringify(state); }); document.getElementById('btnRestore').addEventListener('click', function () { var json = localStorage['gridState']; if (json) { var state = JSON.parse(json); // // restore column layout (order/width) theGrid.columnLayout = state.columns; // // restore filter definitions theFilter.filterDefinition = state.filterDefinition; // // restore sort state var view = theGrid.collectionView; view.deferUpdate(function () { view.sortDescriptions.clear(); for (var i = 0; i < state.sortDescriptions.length; i++) { var sortDesc = state.sortDescriptions[i]; view.sortDescriptions.push(new wjCore.SortDescription(sortDesc.property, sortDesc.ascending)); } }); } }); }
<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <title>MESCIUS Wijmo FlexGrid Persisting the Grid State</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"> <div id="theGrid"></div> <button id="btnSave" class="btn btn-default"> Save State </button> <button id="btnRestore" class="btn btn-default"> Restore State </button> </div> </body> </html>
// generate some random data export function getData() { var countries = 'US,Germany,UK,Japan,Italy,Greece'.split(','), data = []; for (var i = 0; i < countries.length; i++) { data.push({ id: i, country: countries[i], downloads: Math.round(Math.random() * 20000), sales: Math.random() * 10000, expenses: Math.random() * 5000 }); } return data; }
.wj-flexgrid { max-height: 250px; margin: 10px 0; } body { margin-bottom: 20px; }
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