Series Picker

You can easily implement a series-picker UI using FlexChart's series property, a ListBox control, and Wijmo's showPopup and hidePopup methods.

For example, the chart below starts with an auto-generated set of series. Click the gear icon at the top-left corner to show a ListBox where you can select the series you want to display.

Note that you can achieve a similar result by setting the chart's legendToggle property to true. Once you do that, the legend itself acts as a series picker: clicking any series name in the legend toggles its visibility.

Learn about FlexChart | FlexChart API Reference

import 'bootstrap.css'; import '@grapecity/wijmo.styles/wijmo.css'; import './styles.css'; import { FlexChart, Palettes, Series, SeriesVisibility } from '@grapecity/wijmo.chart'; import { isArray, isNumber, toHeaderCase, showPopup, hidePopup } from '@grapecity/wijmo'; import { ListBox } from '@grapecity/wijmo.input'; import { getData } from './data'; // document.readyState === 'complete' ? init() : window.onload = init; // function init() { // create the chart let theChart = new FlexChart('#theChart', { itemsSource: getData(), bindingX: 'country' }); theChart.palette = getRandomPalette(); // // auto-generate series let item = theChart.itemsSource[0]; for (let k in item) { if (isNumber(item[k])) { let series = new Series(); series.binding = k; series.name = toHeaderCase(k); series['visible'] = true; // add 'visible' property for binding theChart.series.push(series); } } // // create the series picker let theSeriesPicker = new ListBox('#theSeriesPicker', { itemsSource: theChart.series, checkedMemberPath: 'visible', displayMemberPath: 'name', lostFocus: () => { hidePopup(theSeriesPicker.hostElement); }, checkedItemsChanged: (s) => { // map extra 'visible' property to 'Series.visibility' values theChart.series.forEach((series) => { series.visibility = s.checkedItems.indexOf(series) > -1 ? SeriesVisibility.Visible : SeriesVisibility.Hidden; }); } }); // document.querySelector('#pickerButton').addEventListener('click', e => { showPopup(theSeriesPicker.hostElement, e.target, false, true, false); theSeriesPicker.focus(); e.preventDefault(); }); } // function getRandomPalette() { let palettes = Object.keys(Palettes).filter(prop => isArray(Palettes[prop])); let rand = Math.floor(Math.random() * palettes.length); // return Palettes[palettes[rand]]; }
<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <title>MESCIUS Wijmo FlexChart Series Picker</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 style="position:relative"> <div id="theChart"></div> <div id="pickerButton"> <span class="column-picker-icon glyphicon glyphicon-cog"></span> </div> </div> <div style="display:none"> <div id="theSeriesPicker" class="series-picker"></div> </div> </div> </body> </html>
// generate some random data export function getData() { let countries = 'US,Canada,Mexico,Japan,Korea,China,Germany,France,UK,Italy,Greece'.split(','), data = []; // for (let i = 0; i < countries.length; i++) { data.push({ country: countries[i], leads: Math.random() * 100000, qualified: Math.random() * 50000, analysis: Math.random() * 5000, quotes: Math.random() * 4000, negotiations: Math.random() * 1000, sales: Math.random() * 800 }); } // return data; }
.wj-flexchart { height: 300px; margin: 10px 0; } .series-picker { columns: 2; padding: 12px; margin-left: 12px; margin-top: 26px; box-shadow: 0 10px 20px rgba(0,0,0,0.19), 0 6px 6px rgba(0,0,0,0.23); } #pickerButton { cursor: pointer; color: #FF8754; padding: 6px; position: absolute; left: 0; top: 0 } body { margin-bottom: 20px; }
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