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Selection
Documentation
This demo illustrates the use of the pointClick callback function to implement selection in the Chart widget. The selectionMode of the series is set to «allArgumentPoints», which means that when a user selects a point, other points with the same argument also become selected.
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import React from 'react';
import Chart, {
CommonSeriesSettings,
Series,
Label,
Format,
ValueAxis,
Legend,
Export
} from 'devextreme-react/chart';
import { exportData } from './data.js';
class App extends React.Component {
render() {
return (
<Chart
id="chart"
dataSource={exportData}
rotated={true}
onPointClick={onPointClick}
onLegendClick={onLegendClick}
title="Economy - Export Change"
>
<CommonSeriesSettings
argumentField="country"
type="bar"
hoverMode="allArgumentPoints"
selectionMode="allArgumentPoints"
>
<Label visible={true}>
<Format
precision={1}
type="percent"
/>
</Label>
</CommonSeriesSettings>
<Series
valueField="year2007"
name="2007 - 2008"
/>
<Series
valueField="year2008"
name="2008 - 2009"
/>
<ValueAxis>
<Label>
<Format
precision={1}
type="percent"
/>
</Label>
</ValueAxis>
<Legend
verticalAlignment="bottom"
horizontalAlignment="center">
</Legend>
<Export enabled={true} />
</Chart>
);
}
}
function onPointClick({ target: point }) {
point.select();
}
function onLegendClick({ target: series }) {
if(series.isVisible()) {
series.hide();
} else {
series.show();
}
}
export default App;
import React from 'react';
import ReactDOM from 'react-dom';
import App from './App.js';
ReactDOM.render(
<App />,
document.getElementById('app')
);
<!DOCTYPE html>
<html>
<head>
<title>DevExtreme Demo</title>
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0" />
<link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/20.2.4/css/dx.common.css" />
<link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/20.2.4/css/dx.light.css" />
<link rel="stylesheet" type="text/css" href="styles.css" />
<script src="https://unpkg.com/core-js@2.4.1/client/shim.min.js"></script>
<script src="https://unpkg.com/systemjs@0.21.3/dist/system.js"></script>
<script type="text/javascript" src="config.js"></script>
<script type="text/javascript">
System.import('./index.js');
</script>
</head>
<body class="dx-viewport">
<div class="demo-container">
<div id="app"></div>
</div>
</body>
</html>
#chart {
height: 440px;
}
export const exportData = [{
country: 'China',
year2007: 0.1732,
year2008: -0.1588
}, {
country: 'Germany',
year2007: 0.0964,
year2008: -0.2231
}, {
country: 'United States',
year2007: 0.1187,
year2008: -0.1878
}, {
country: 'Japan',
year2007: 0.1081,
year2008: -0.2614
}, {
country: 'France',
year2007: 0.1014,
year2008: -0.2222
}, {
country: 'Netherlands',
year2007: 0.1355,
year2008: -0.2015
}];
System.config({
transpiler: 'plugin-babel',
meta: {
},
paths: {
'npm:': 'https://unpkg.com/'
},
defaultExtension: 'js',
map: {
'react': 'npm:react@16.14.0/umd/react.development.js',
'react-dom': 'npm:react-dom@16.14.0/umd/react-dom.development.js',
'prop-types': 'npm:prop-types@15.7.2/prop-types.js',
'rrule': 'npm:rrule@2.6.6/dist/es5/rrule.js',
'luxon': 'npm:luxon@1.25.0/build/global/luxon.min.js',
'es6-object-assign': 'npm:es6-object-assign@1.1.0',
'devextreme': 'npm:devextreme@20.2.4',
'devextreme-react': 'npm:devextreme-react@20.2.4',
'jszip': 'npm:jszip@3.5.0/dist/jszip.min.js',
'devextreme-quill': 'npm:devextreme-quill@0.9.7/dist/dx-quill.min.js',
'devexpress-diagram': 'npm:devexpress-diagram@2.0.5/dist/dx-diagram.js',
'devexpress-gantt': 'npm:devexpress-gantt@2.0.8/dist/dx-gantt.js',
'preact': 'npm:preact@10.5.7/dist/preact.js',
'preact/hooks': 'npm:preact@10.5.7/hooks/dist/hooks.js',
// SystemJS plugins
'plugin-babel': 'npm:systemjs-plugin-babel@0.0.25/plugin-babel.js',
'systemjs-babel-build': 'npm:systemjs-plugin-babel@0.0.25/systemjs-babel-browser.js'
},
packages: {
'devextreme': {
defaultExtension: 'js'
},
'devextreme-react': {
main: 'index.js'
},
'devextreme/events/utils': {
main: 'index'
},
'devextreme/events': {
main: 'index'
},
'es6-object-assign': {
main: './index.js',
defaultExtension: 'js'
}
},
babelOptions: {
sourceMaps: false,
stage0: true,
react: true
}
});