Sorting and Filtering Items

The CollectionView to filters and sorts the data bound to the ComboBox. You can use the CollectionView.currentItem instead of the ComboBox.selectedItem to access a currently selected item. This sample filters out items in the original data source, by population > 20 million, and sorts the items by Country name.

import 'bootstrap.css'; import '@mescius/wijmo.styles/wijmo.css'; import './styles.css'; // import * as wijmo from '@mescius/wijmo'; import * as input from '@mescius/wijmo.input'; import { getData } from './data'; // document.readyState === 'complete' ? init() : window.onload = init; // function init() { // define a template for showing the current item's details let detailTemplate = '<div>' + '<div>Country: <b>{country}</b></div>' + '<div>GDP (M$/yr): <b>{gdpm:c0}</b></div>' + '<div>Population (thousands): <b>{popk:n0}</b></div>' + '<div>GRP/Capita: <b>{gdpcap:c0}</b></div>' + '<div>Rank: <b>{id}</b></div>' + '</div>'; // let view = new wijmo.CollectionView(getData(), { // update detail when current item changes currentChanged: (sender) => { let html = wijmo.format(detailTemplate, sender.currentItem, (data, name, fmt, val) => { if (wijmo.isString(data[name])) { val = wijmo.escapeHtml(data[name]); } return val; }); // document.getElementById('detail').innerHTML = html; }, // // 20 million people or more filter: (item) => item.popk > 20000, // // sort and filter the collectionView sortDescriptions: [ new wijmo.SortDescription('country', true) ] }); // // combo and CollectionView let theCombo = new input.ComboBox('#theCombo', { displayMemberPath: 'country', itemsSource: view }); // // show details for the first item view.onCurrentChanged(); }
<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <title>MESCIUS Wijmo ComboBox Sorting and Filtering Items</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 class="form-group"> <label for="theCombo">Select an item:</label> <div id="theCombo"></div> </div> <p id="detail"></p> </div> </body> </html>
// export function getData() { return [ { id: 1, country: 'Luxembourg', gdpm: 57825, popk: 563, gdpcap: 102708 }, { id: 2, country: 'Switzerland', gdpm: 664005, popk: 8238, gdpcap: 80602 }, { id: 3, country: 'Norway', gdpm: 388315, popk: 5205, gdpcap: 74604 }, { id: 4, country: 'Macao', gdpm: 46178, popk: 647, gdpcap: 71372 }, { id: 5, country: 'Qatar', gdpm: 166908, popk: 2421, gdpcap: 68941 }, { id: 6, country: 'Ireland', gdpm: 283716, popk: 4635, gdpcap: 61211 }, { id: 7, country: 'United States', gdpm: 18036650, popk: 321601, gdpcap: 56083 }, { id: 8, country: 'Singapore', gdpm: 292734, popk: 5535, gdpcap: 52887 }, { id: 9, country: 'Denmark', gdpm: 295091, popk: 5660, gdpcap: 52136 }, { id: 10, country: 'Australia', gdpm: 1225286, popk: 23940, gdpcap: 51181 }, { id: 11, country: 'Iceland', gdpm: 16718, popk: 333, gdpcap: 50204 }, { id: 12, country: 'Sweden', gdpm: 493042, popk: 9851, gdpcap: 50049 }, { id: 13, country: 'San Marino', gdpm: 1558, popk: 31, gdpcap: 50258 }, { id: 14, country: 'Netherlands', gdpm: 750696, popk: 16937, gdpcap: 44322 }, { id: 15, country: 'United Kingdom', gdpm: 2858482, popk: 65110, gdpcap: 43902 }, { id: 16, country: 'Austria', gdpm: 374261, popk: 8621, gdpcap: 43412 }, { id: 17, country: 'Canada', gdpm: 1550537, popk: 35825, gdpcap: 43280 }, { id: 18, country: 'Finland', gdpm: 232077, popk: 5472, gdpcap: 42411 }, { id: 19, country: 'Germany', gdpm: 3365293, popk: 82176, gdpcap: 40952 }, { id: 20, country: 'Belgium', gdpm: 454288, popk: 11209, gdpcap: 40528 }, { id: 21, country: 'United Arab Emirates', gdpm: 370296, popk: 9581, gdpcap: 38648 }, { id: 22, country: 'France', gdpm: 2420163, popk: 64275, gdpcap: 37653 }, { id: 23, country: 'New Zealand', gdpm: 172257, popk: 4647, gdpcap: 37068 }, { id: 24, country: 'Israel', gdpm: 299413, popk: 8377, gdpcap: 35742 }, { id: 25, country: 'Japan', gdpm: 4124211, popk: 126981, gdpcap: 32478 }, { id: 26, country: 'Brunei Darussalam', gdpm: 12930, popk: 417, gdpcap: 31007 }, { id: 27, country: 'Italy', gdpm: 1815759, popk: 60796, gdpcap: 29866 }, { id: 28, country: 'Puerto Rico', gdpm: 102906, popk: 3474, gdpcap: 29621 }, { id: 29, country: 'Kuwait', gdpm: 114079, popk: 4110, gdpcap: 27756 }, { id: 30, country: 'South Korea', gdpm: 1377873, popk: 50617, gdpcap: 27221 }, { id: 31, country: 'Spain', gdpm: 1199715, popk: 46423, gdpcap: 25843 }, { id: 32, country: 'The Bahamas', gdpm: 8854, popk: 364, gdpcap: 24324 }, { id: 33, country: 'Bahrain', gdpm: 31119, popk: 1294, gdpcap: 24048 }, { id: 34, country: 'Cyprus', gdpm: 19330, popk: 847, gdpcap: 22821 }, { id: 35, country: 'Malta', gdpm: 9752, popk: 429, gdpcap: 22731 }, { id: 37, country: 'Slovenia', gdpm: 42798, popk: 2063, gdpcap: 20745 }, { id: 38, country: 'Saudi Arabia', gdpm: 646002, popk: 31386, gdpcap: 20582 }, { id: 39, country: 'Portugal', gdpm: 199032, popk: 10411, gdpcap: 19117 }, { id: 40, country: 'Trinidad and Tobago', gdpm: 24631, popk: 1358, gdpcap: 18137 }, { id: 41, country: 'Greece', gdpm: 195320, popk: 10858, gdpcap: 17988 }, { id: 42, country: 'Czech Republic', gdpm: 185156, popk: 10538, gdpcap: 17570 }, { id: 43, country: 'Estonia', gdpm: 22704, popk: 1313, gdpcap: 17291 }, { id: 44, country: 'Equatorial Guinea', gdpm: 13819, popk: 799, gdpcap: 17295 }, { id: 45, country: 'Oman', gdpm: 64121, popk: 3840, gdpcap: 16698 }, { id: 46, country: 'St. Kitts and Nevis', gdpm: 915, popk: 56, gdpcap: 16339 }, { id: 47, country: 'Palau', gdpm: 287, popk: 18, gdpcap: 15944 }, { id: 48, country: 'Slovakia', gdpm: 86629, popk: 5421, gdpcap: 15980 }, { id: 49, country: 'Barbados', gdpm: 4385, popk: 280, gdpcap: 15660 }, { id: 50, country: 'Uruguay', gdpm: 53107, popk: 3416, gdpcap: 15546 } ]; }
body { margin-bottom: 24px; } label { margin-right: 3px; }
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