Customize Search Algorithm

This sample demonstrates 2 unique searching beahivors, The First AutoComplete uses the default search. The second AutoComplete uses the itemsSourceFunction property to customize the serach algorithm. Instead of looking for items that contain the user input, it looks for items that start with it, like the ComboBox.

import 'bootstrap.css'; import '@grapecity/wijmo.styles/wijmo.css'; import './styles.css'; // import * as input from '@grapecity/wijmo.input'; import { getData } from './data'; // document.readyState === 'complete' ? init() : window.onload = init; // function init() { // AutoComplete with default search let theAutoComplete = new input.AutoComplete('#theAutoComplete', { displayMemberPath: 'country', itemsSource: getData() }); // // AutoComplete with custom search let theAutoCompleteCustom = new input.AutoComplete('#theAutoCompleteCustom', { displayMemberPath: 'country', itemsSourceFunction: (query, max, callback) => { // empty query? no results if (!query) { callback(null); return; } // // find items that start with the user input let allItems = getData(), queryItems = [], rx = new RegExp('^' + query, 'i'); // for (let i = 0; i < allItems.length && queryItems.length < max; i++) { if (rx.test(allItems[i].country)) { queryItems.push(allItems[i]); } } callback(queryItems); } }); }
<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <title>GrapeCity AutoComplete Custom Search</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 class="form-group"> <label for="theAutoComplete">Default:</label> <div id="theAutoComplete"></div> </div> <div class="form-group"> <label for="theAutoCompleteCustom">Custom:</label> <div id="theAutoCompleteCustom"></div> </div> </div> </body> </html>
// list of country GDP and populations // https://en.wikipedia.org/wiki/List_of_IMF_ranked_countries_by_GDP 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: 36, country: 'Taiwan', gdpm: 523006, popk: 23492, gdpcap: 22263 }, { 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; }
(function (global) { System.config({ transpiler: 'plugin-babel', babelOptions: { es2015: 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', '@grapecity/wijmo': 'npm:@grapecity/wijmo/index.js', '@grapecity/wijmo.input': 'npm:@grapecity/wijmo.input/index.js', '@grapecity/wijmo.styles': 'npm:@grapecity/wijmo.styles', '@grapecity/wijmo.cultures': 'npm:@grapecity/wijmo.cultures', '@grapecity/wijmo.chart': 'npm:@grapecity/wijmo.chart/index.js', '@grapecity/wijmo.chart.analytics': 'npm:@grapecity/wijmo.chart.analytics/index.js', '@grapecity/wijmo.chart.animation': 'npm:@grapecity/wijmo.chart.animation/index.js', '@grapecity/wijmo.chart.annotation': 'npm:@grapecity/wijmo.chart.annotation/index.js', '@grapecity/wijmo.chart.finance': 'npm:@grapecity/wijmo.chart.finance/index.js', '@grapecity/wijmo.chart.finance.analytics': 'npm:@grapecity/wijmo.chart.finance.analytics/index.js', '@grapecity/wijmo.chart.hierarchical': 'npm:@grapecity/wijmo.chart.hierarchical/index.js', '@grapecity/wijmo.chart.interaction': 'npm:@grapecity/wijmo.chart.interaction/index.js', '@grapecity/wijmo.chart.radar': 'npm:@grapecity/wijmo.chart.radar/index.js', '@grapecity/wijmo.chart.render': 'npm:@grapecity/wijmo.chart.render/index.js', '@grapecity/wijmo.chart.webgl': 'npm:@grapecity/wijmo.chart.webgl/index.js', '@grapecity/wijmo.gauge': 'npm:@grapecity/wijmo.gauge/index.js', '@grapecity/wijmo.grid': 'npm:@grapecity/wijmo.grid/index.js', '@grapecity/wijmo.grid.detail': 'npm:@grapecity/wijmo.grid.detail/index.js', '@grapecity/wijmo.grid.filter': 'npm:@grapecity/wijmo.grid.filter/index.js', '@grapecity/wijmo.grid.search': 'npm:@grapecity/wijmo.grid.search/index.js', '@grapecity/wijmo.grid.grouppanel': 'npm:@grapecity/wijmo.grid.grouppanel/index.js', '@grapecity/wijmo.grid.multirow': 'npm:@grapecity/wijmo.grid.multirow/index.js', '@grapecity/wijmo.grid.transposed': 'npm:@grapecity/wijmo.grid.transposed/index.js', '@grapecity/wijmo.grid.pdf': 'npm:@grapecity/wijmo.grid.pdf/index.js', '@grapecity/wijmo.grid.sheet': 'npm:@grapecity/wijmo.grid.sheet/index.js', '@grapecity/wijmo.grid.xlsx': 'npm:@grapecity/wijmo.grid.xlsx/index.js', '@grapecity/wijmo.grid.selector': 'npm:@grapecity/wijmo.grid.selector/index.js', '@grapecity/wijmo.grid.cellmaker': 'npm:@grapecity/wijmo.grid.cellmaker/index.js', '@grapecity/wijmo.nav': 'npm:@grapecity/wijmo.nav/index.js', '@grapecity/wijmo.odata': 'npm:@grapecity/wijmo.odata/index.js', '@grapecity/wijmo.olap': 'npm:@grapecity/wijmo.olap/index.js', '@grapecity/wijmo.pdf': 'npm:@grapecity/wijmo.pdf/index.js', '@grapecity/wijmo.viewer': 'npm:@grapecity/wijmo.viewer/index.js', '@grapecity/wijmo.xlsx': 'npm:@grapecity/wijmo.xlsx/index.js', '@grapecity/wijmo.undo': 'npm:@grapecity/wijmo.undo/index.js', '@grapecity/wijmo.interop.grid': 'npm:@grapecity/wijmo.interop.grid/index.js', '@grapecity/wijmo.touch': 'npm:@grapecity/wijmo.touch/index.js', '@grapecity/wijmo.cloud': 'npm:@grapecity/wijmo.cloud/index.js', 'jszip': 'npm:jszip/dist/jszip.js', 'bootstrap.css': 'npm:bootstrap/dist/css/bootstrap.min.css', 'css': 'npm:systemjs-plugin-css/css.js', 'plugin-babel': 'npm:systemjs-plugin-babel/plugin-babel.js', 'systemjs-babel-build':'npm:systemjs-plugin-babel/systemjs-babel-browser.js' }, // packages tells the System loader how to load when no filename and/or no extension packages: { src: { defaultExtension: 'js' }, "node_modules": { defaultExtension: 'js' }, } }); })(this);