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import React, { useCallback, useState } from 'react';
import {
Chart,
Series,
Legend,
ValueAxis,
ChartTypes,
} from 'devextreme-react/chart';
import { Button } from 'devextreme-react/button';
import service from './data.ts';
const colors = ['#6babac', '#e55253'];
function App() {
const [isFirstLevel, setIsFirstLevel] = useState(true);
const [data, setData] = useState(service.filterData(''));
const customizePoint = useCallback((): {
color: string,
hoverStyle?: {
color?: string,
hatching?: string
}
} => ({
color: colors[Number(isFirstLevel)],
hoverStyle: !isFirstLevel ? {
hatching: 'none',
} : {},
}), [isFirstLevel]);
const onPointClick = useCallback((e: ChartTypes.PointClickEvent) => {
if (isFirstLevel) {
setIsFirstLevel(false);
setData(service.filterData(e.target.originalArgument.toString()));
}
}, [isFirstLevel, setData, setIsFirstLevel]);
const onButtonClick = useCallback(() => {
if (!isFirstLevel) {
setIsFirstLevel(true);
setData(service.filterData(''));
}
}, [isFirstLevel, setData, setIsFirstLevel]);
return (
<div>
<Chart
id="chart"
title="The Most Populated Countries by Continents"
customizePoint={customizePoint}
onPointClick={onPointClick}
className={isFirstLevel ? 'pointer-on-bars' : ''}
dataSource={data}
>
<Series type="bar" />
<ValueAxis showZero={false} />
<Legend visible={false} />
</Chart>
<Button className="button-container"
text="Back"
icon="chevronleft"
visible={!isFirstLevel}
onClick={onButtonClick}
/>
</div>
);
}
export default App;
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import React, { useCallback, useState } from 'react';
import {
Chart, Series, Legend, ValueAxis,
} from 'devextreme-react/chart';
import { Button } from 'devextreme-react/button';
import service from './data.js';
const colors = ['#6babac', '#e55253'];
function App() {
const [isFirstLevel, setIsFirstLevel] = useState(true);
const [data, setData] = useState(service.filterData(''));
const customizePoint = useCallback(
() => ({
color: colors[Number(isFirstLevel)],
hoverStyle: !isFirstLevel
? {
hatching: 'none',
}
: {},
}),
[isFirstLevel],
);
const onPointClick = useCallback(
(e) => {
if (isFirstLevel) {
setIsFirstLevel(false);
setData(service.filterData(e.target.originalArgument.toString()));
}
},
[isFirstLevel, setData, setIsFirstLevel],
);
const onButtonClick = useCallback(() => {
if (!isFirstLevel) {
setIsFirstLevel(true);
setData(service.filterData(''));
}
}, [isFirstLevel, setData, setIsFirstLevel]);
return (
<div>
<Chart
id="chart"
title="The Most Populated Countries by Continents"
customizePoint={customizePoint}
onPointClick={onPointClick}
className={isFirstLevel ? 'pointer-on-bars' : ''}
dataSource={data}
>
<Series type="bar" />
<ValueAxis showZero={false} />
<Legend visible={false} />
</Chart>
<Button
className="button-container"
text="Back"
icon="chevronleft"
visible={!isFirstLevel}
onClick={onButtonClick}
/>
</div>
);
}
export default App;
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import React from 'react';
import ReactDOM from 'react-dom';
import App from './App.tsx';
ReactDOM.render(
<App />,
document.getElementById('app'),
);
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const data = [
{ arg: 'Asia', val: 3007613498, parentID: '' },
{ arg: 'North America', val: 493603615, parentID: '' },
{ arg: 'Europe', val: 438575293, parentID: '' },
{ arg: 'Africa', val: 381331438, parentID: '' },
{ arg: 'South America', val: 331126555, parentID: '' },
{ arg: 'Nigeria', val: 181562056, parentID: 'Africa' },
{ arg: 'Egypt', val: 88487396, parentID: 'Africa' },
{ arg: 'Congo', val: 77433744, parentID: 'Africa' },
{ arg: 'Morocco', val: 33848242, parentID: 'Africa' },
{ arg: 'China', val: 1380083000, parentID: 'Asia' },
{ arg: 'India', val: 1306687000, parentID: 'Asia' },
{ arg: 'Pakistan', val: 193885498, parentID: 'Asia' },
{ arg: 'Japan', val: 126958000, parentID: 'Asia' },
{ arg: 'Russia', val: 146804372, parentID: 'Europe' },
{ arg: 'Germany', val: 82175684, parentID: 'Europe' },
{ arg: 'Turkey', val: 79463663, parentID: 'Europe' },
{ arg: 'France', val: 66736000, parentID: 'Europe' },
{ arg: 'United Kingdom', val: 63395574, parentID: 'Europe' },
{ arg: 'United States', val: 325310275, parentID: 'North America' },
{ arg: 'Mexico', val: 121005815, parentID: 'North America' },
{ arg: 'Canada', val: 36048521, parentID: 'North America' },
{ arg: 'Cuba', val: 11239004, parentID: 'North America' },
{ arg: 'Brazil', val: 205737996, parentID: 'South America' },
{ arg: 'Colombia', val: 48400388, parentID: 'South America' },
{ arg: 'Venezuela', val: 30761000, parentID: 'South America' },
{ arg: 'Peru', val: 28220764, parentID: 'South America' },
{ arg: 'Chile', val: 18006407, parentID: 'South America' },
];
export default {
filterData(name: string) {
return data.filter((item) => item.parentID === name);
},
};
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window.exports = window.exports || {};
window.config = {
transpiler: 'ts',
typescriptOptions: {
module: 'system',
emitDecoratorMetadata: true,
experimentalDecorators: true,
jsx: 'react',
},
meta: {
'react': {
'esModule': true,
},
'typescript': {
'exports': 'ts',
},
'devextreme/time_zone_utils.js': {
'esModule': true,
},
'devextreme/localization.js': {
'esModule': true,
},
'devextreme/viz/palette.js': {
'esModule': true,
},
'openai': {
'esModule': true,
},
},
paths: {
'npm:': 'https://unpkg.com/',
'bundles:': 'bundles/',
'externals:': 'bundles/externals/',
},
defaultExtension: 'js',
map: {
'ts': 'npm:plugin-typescript@8.0.0/lib/plugin.js',
'typescript': 'npm:typescript@4.2.4/lib/typescript.js',
'jszip': 'npm:jszip@3.10.1/dist/jszip.min.js',
'react': 'npm:react@17.0.2/umd/react.development.js',
'react-dom': 'npm:react-dom@17.0.2/umd/react-dom.development.js',
'prop-types': 'npm:prop-types/prop-types.js',
'rrule': 'npm:rrule@2.6.4/dist/es5/rrule.js',
'luxon': 'npm:luxon@3.4.4/build/global/luxon.min.js',
'es6-object-assign': 'npm:es6-object-assign',
'devextreme': 'npm:devextreme@24.2.5/cjs',
'devextreme-react': 'npm:devextreme-react@24.2.5/cjs',
'devextreme-quill': 'npm:devextreme-quill@1.7.1/dist/dx-quill.min.js',
'devexpress-diagram': 'npm:devexpress-diagram@2.2.5/dist/dx-diagram.js',
'devexpress-gantt': 'npm:devexpress-gantt@4.1.54/dist/dx-gantt.js',
'@devextreme/runtime': 'npm:@devextreme/runtime@3.0.12',
'inferno': 'npm:inferno@7.4.11/dist/inferno.min.js',
'inferno-compat': 'npm:inferno-compat/dist/inferno-compat.min.js',
'inferno-create-element': 'npm:inferno-create-element@7.4.11/dist/inferno-create-element.min.js',
'inferno-dom': 'npm:inferno-dom/dist/inferno-dom.min.js',
'inferno-hydrate': 'npm:inferno-hydrate/dist/inferno-hydrate.min.js',
'inferno-clone-vnode': 'npm:inferno-clone-vnode/dist/inferno-clone-vnode.min.js',
'inferno-create-class': 'npm:inferno-create-class/dist/inferno-create-class.min.js',
'inferno-extras': 'npm:inferno-extras/dist/inferno-extras.min.js',
'devextreme-cldr-data': 'npm:devextreme-cldr-data@1.0.3',
// 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',
// Prettier
'prettier/standalone': 'npm:prettier@2.8.8/standalone.js',
'prettier/parser-html': 'npm:prettier@2.8.8/parser-html.js',
},
packages: {
'devextreme': {
defaultExtension: 'js',
},
'devextreme-react': {
main: 'index.js',
},
'devextreme/events/utils': {
main: 'index',
},
'devextreme/localization/messages': {
format: 'json',
defaultExtension: 'json',
},
'devextreme/events': {
main: 'index',
},
'es6-object-assign': {
main: './index.js',
defaultExtension: 'js',
},
},
packageConfigPaths: [
'npm:@devextreme/*/package.json',
'npm:@devextreme/runtime@3.0.12/inferno/package.json',
],
babelOptions: {
sourceMaps: false,
stage0: true,
react: true,
},
};
System.config(window.config);
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import React from 'react';
import ReactDOM from 'react-dom';
import App from './App.js';
ReactDOM.render(<App />, document.getElementById('app'));
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const data = [
{ arg: 'Asia', val: 3007613498, parentID: '' },
{ arg: 'North America', val: 493603615, parentID: '' },
{ arg: 'Europe', val: 438575293, parentID: '' },
{ arg: 'Africa', val: 381331438, parentID: '' },
{ arg: 'South America', val: 331126555, parentID: '' },
{ arg: 'Nigeria', val: 181562056, parentID: 'Africa' },
{ arg: 'Egypt', val: 88487396, parentID: 'Africa' },
{ arg: 'Congo', val: 77433744, parentID: 'Africa' },
{ arg: 'Morocco', val: 33848242, parentID: 'Africa' },
{ arg: 'China', val: 1380083000, parentID: 'Asia' },
{ arg: 'India', val: 1306687000, parentID: 'Asia' },
{ arg: 'Pakistan', val: 193885498, parentID: 'Asia' },
{ arg: 'Japan', val: 126958000, parentID: 'Asia' },
{ arg: 'Russia', val: 146804372, parentID: 'Europe' },
{ arg: 'Germany', val: 82175684, parentID: 'Europe' },
{ arg: 'Turkey', val: 79463663, parentID: 'Europe' },
{ arg: 'France', val: 66736000, parentID: 'Europe' },
{ arg: 'United Kingdom', val: 63395574, parentID: 'Europe' },
{ arg: 'United States', val: 325310275, parentID: 'North America' },
{ arg: 'Mexico', val: 121005815, parentID: 'North America' },
{ arg: 'Canada', val: 36048521, parentID: 'North America' },
{ arg: 'Cuba', val: 11239004, parentID: 'North America' },
{ arg: 'Brazil', val: 205737996, parentID: 'South America' },
{ arg: 'Colombia', val: 48400388, parentID: 'South America' },
{ arg: 'Venezuela', val: 30761000, parentID: 'South America' },
{ arg: 'Peru', val: 28220764, parentID: 'South America' },
{ arg: 'Chile', val: 18006407, parentID: 'South America' },
];
export default {
filterData(name) {
return data.filter((item) => item.parentID === name);
},
};
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<html lang="en">
<head></head>
<body class="dx-viewport">
<div class="demo-container">
<div id="app"></div>
</div>
</body>
</html>
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#chart {
height: 440px;
width: 100%;
}
#chart.pointer-on-bars .dxc-series rect {
cursor: pointer;
}
.button-container {
text-align: center;
height: 40px;
position: absolute;
top: 7px;
left: 0;
}
Bind to Data
This demo binds the drill-down chart to an array of objects. To visualize hierarchical data in the drill-down chart, filter the data source by the parentID
for different drill-down views in the filterData
function.
Implement View Navigation
To navigate from the main view to a detailed view, filter the data source by a different parentID
in the onPointClick event handler. To navigate back, click the Back button. This action resets the data source filter. Use the isFirstLevel
flag to distinguish views.
Customize the Appearance
Use the customizePoint function to change the individual point properties. This function returns an object with properties that should be changed for a certain point. In this demo, this function changes the color and hoverStyle properties.