Accordion Trees

Accordions are multi-pane panels that keep only one panel expanded at a time. They are commonly used for navigation. You can use the TreeView control to implement accordions. This sample creates an Accordion using the TreeView and CSS by customizing the header display, hiding glyphs and setting autoCollapse property to true.

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 the tree var tree = new wjNav.TreeView('#theTree', { itemsSource: getData(), displayMemberPath: 'header', childItemsPath: 'items', isContentHtml: true, isAnimated: true }); // // toggle accordion style document.getElementById('customCss').addEventListener('click', function (e) { wjCore.toggleClass(tree.hostElement, 'accordion', e.target.checked); }); // // handle clicks on accordion items tree.hostElement.addEventListener('click', function (e) { if (e.target.tagName == 'A') { var msg = document.getElementById('msg'); msg.innerHTML = wjCore.format('Navigating to <b>** {href} **</b>', e.target); e.preventDefault(); } }); }
<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <title>GrapeCity Wijmo TreeView Accordion Trees</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"> <label> Use Custom CSS <input id="customCss" type="checkbox" checked="checked"> </label> <div id="msg" class="msg">Ready</div> <div id="theTree" class="accordion"></div> </div> </body> </html>
// get the tree data export function getData() { return [ { header: 'Angular', items: [ { header: '<a href="ng/intro">Introduction</a>' }, { header: '<a href="ng/samples">Samples</a>' }, { header: '<a href="ng/perf">Performance</a>' } ] }, { header: 'React', items: [ { header: '<a href="rc/intro">Introduction</a>' }, { header: '<a href="rc/samples">Samples</a>' }, { header: '<a href="rc/perf">Performance</a>' } ] }, { header: 'Vue', items: [ { header: '<a href="vue/intro">Introduction</a>' }, { header: '<a href="vue/samples">Samples</a>' }, { header: '<a href="vue/perf">Performance</a>' } ] }, { header: 'Knockout', items: [ { header: '<a href="ko/intro">Introduction</a>' }, { header: '<a href="ko/samples">Samples</a>' }, { header: '<a href="ko/perf">Performance</a>' } ] } ]; }
/* style for messages */ .msg { float: right; text-align: right; color: orange; } /* accordion tree styles /* hide collapse/expand glyphs */ .accordion.wj-treeview .wj-nodelist .wj-node:before { display: none; } /* level 0 nodes (headers) */ .accordion.wj-treeview .wj-nodelist>.wj-node { font-size: 120%; font-weight: bold; padding: 6px 10px; color: white; background: #106cc8; margin-bottom: 4px; box-shadow: 0 1px 3px rgba(0, 0, 0, 0.12), 0 1px 2px rgba(0, 0, 0, 0.24); } /* level 1 nodes (navigation items) */ .accordion.wj-treeview .wj-nodelist>.wj-nodelist>.wj-node { font-size: inherit; font-weight: normal; padding: 4px 1em; color: inherit; background: inherit; box-shadow: none; } .accordion.wj-treeview .wj-nodelist { padding-bottom: 6px; } /* default trees on this sample */ .wj-treeview { display: block; height: 350px; font-size: 120%; margin-bottom: 8px; padding: 6px; background: #f0f0f0; box-shadow: 0 3px 6px rgba(0, 0, 0, 0.16), 0 3px 6px rgba(0, 0, 0, 0.23); } body { margin-bottom: 24pt; }
(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);