TreeView Accordion

This sample creates an Accordion from the TreeView control using CSS. It also uses the formatItem event handler to customize the appearance.

Learn about Wijmo | TreeView Styling and CSS Documentation | TreeView API Reference

import 'bootstrap.css'; import '@grapecity/wijmo.styles/wijmo.css'; import './styles.css'; import * as wjNav from '@grapecity/wijmo.nav'; import * as wjCore from '@grapecity/wijmo'; import { getData } from './data'; // document.readyState === 'complete' ? init() : window.onload = init; // function init() { // // create a list of items with header and detail properties var treeData = []; var data = getData(); for (var i = 0; i < data.length; i++) { treeData.push({ header: data[i].name, detail: [data[i]] }); } // // define template for the details var itemTemplate = '<div class="item">' + '<b>{city}</b> ({state})<br/>' + '{address}<br/>' + 'Phone: <b>{phone}</b><br/>' + 'Fax: <b>{fax}</b><br/>' + 'Website: <a href="{site}">{site}</a><br/>' + '</div>'; // // generate an Accordion-like TreeView var theTree = new wjNav.TreeView('#treeview', { displayMemberPath: 'header', childItemsPath: 'detail', itemsSource: treeData, formatItem: function (s, e) { switch (e.level) { // // level 0: wrap header in an H1 tag case 0: e.element.innerHTML = '<h1>' + e.dataItem.header + '<h1>'; break; // // level 1: use template to create details case 1: var html = wjCore.format(itemTemplate, e.dataItem, function (data, name, fmt, val) { if (wjCore.isString(data[name])) { val = wjCore.escapeHtml(data[name]); } return val; }); e.element.innerHTML = html; break; } } }); // // expand selected items, show selection theTree.selectedItemChanged.addHandler(function (s, e) { var node = theTree.selectedNode; if (node && node.parentNode) { node = theTree.selectedNode = node.parentNode; } node.isCollapsed = false; document.getElementById('selected').textContent = node.dataItem.header; }); theTree.selectedItem = theTree.itemsSource[0]; // // handle up-arrow key to skip details theTree.hostElement.addEventListener('keydown', function (e) { var node = null; switch (e.keyCode) { case wjCore.Key.Up: node = theTree.selectedNode.previousSibling(); break; case wjCore.Key.Down: node = theTree.selectedNode.nextSibling(); break; } if (node) { theTree.selectedNode = node; e.preventDefault(); } }); }
<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <title>MESCIUS Wijmo TreeView Styling Clean Accordion</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"> <p> Selected item: <b><span id="selected"></span></b> </p> <div id="treeview"></div> </div> </body> </html>
// some data to show in our accordion export function getData() { return [{ name: 'Electro Mart', city: 'Accident', state: 'Maryland', address: '8785 Windfall St.', phone: '(800) 555-1234', fax: '(800) 555-5678', site: 'https://www.electromartnot.com' }, { name: 'Sue\'s Depot', city: 'Big Arm', state: 'Montana', address: '77 Winchester Lane', phone: '(800) 555-2345', fax: '(800) 555-6789', site: 'https://www.suesdepotnot.com' }, { name: 'D&K Digital Locker', city: 'Chicken', state: 'Alaska', address: '787 Lakeview St. ', phone: '(800) 555-3456', fax: '(800) 555-7890', site: 'https://www.digilockernot.com' }, { name: 'Paul\'s Pub & Bistro', city: 'Coupon', state: 'Pennsylvania', address: '711 Old York Drive ', phone: '(800) 555-0987', fax: '(800) 555-6543', site: 'https://www.paulspubnot.com' }, { name: 'Amazing Deals Inc', city: 'Cut And Shoot', state: 'Texas', address: '91 Beech St.', phone: '(800) 955-2109', fax: '(800) 955-8765', site: 'https://www.amazingdealsnot.com' }]; }
body { font-family: 'Segoe UI'; font-size: 14px; } .item p { margin: 0; } .item h1 { margin-bottom: 0; font-size: 20px; font-weight: 200; } .wj-treeview { margin: 12px; padding: 0 12px 12px 12px; background: #fafafa; box-shadow: 0 10px 20px rgba(0,0,0,0.19), 0 6px 6px rgba(0,0,0,0.23); } /* customize TreeView content */ .wj-treeview h1 { display: inline-block; margin-top: 10px; margin-bottom: 0; font-size: 20px; font-weight: 200; } /* hide collapse/expand icons */ .wj-treeview .wj-nodelist .wj-node:before { display: none; } /* remove selected style */ .wj-treeview .wj-node.wj-state-selected { color: inherit; background: transparent; }
(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.chart.map': 'npm:@grapecity/wijmo.chart.map/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.transposedmultirow': 'npm:@grapecity/wijmo.grid.transposedmultirow/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.rest': 'npm:@grapecity/wijmo.rest/index.js', '@grapecity/wijmo.pdf': 'npm:@grapecity/wijmo.pdf/index.js', '@grapecity/wijmo.pdf.security': 'npm:@grapecity/wijmo.pdf.security/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', '@grapecity/wijmo.barcode': 'npm:@grapecity/wijmo.barcode/index.js', '@grapecity/wijmo.barcode.common': 'npm:@grapecity/wijmo.barcode.common/index.js', '@grapecity/wijmo.barcode.composite': 'npm:@grapecity/wijmo.barcode.composite/index.js', '@grapecity/wijmo.barcode.specialized': 'npm:@grapecity/wijmo.barcode.specialized/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);