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Menu

Menu

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The Menu widget is a panel with clickable items. A click on an item opens a drop-down menu, which can contain several submenus.

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import React from 'react'; import { Menu, SelectBox, CheckBox } from 'devextreme-react'; import service from './data.js'; class App extends React.Component { constructor(props) { super(props); this.products = service.getProducts(); this.showSubmenuModes = [{ name: 'onHover', delay: { show: 0, hide: 500 } }, { name: 'onClick', delay: { show: 0, hide: 300 } }]; this.state = { showFirstSubmenuModes: this.showSubmenuModes[1], orientation: 'horizontal', submenuDirection: 'auto', hideSubmenuOnMouseLeave: false, currentProduct: null }; this.itemClick = this.itemClick.bind(this); this.showSubmenuModeChanged = this.showSubmenuModeChanged.bind(this); this.orientationChanged = this.orientationChanged.bind(this); this.submenuDirectionChanged = this.submenuDirectionChanged.bind(this); this.hideSubmenuOnMouseLeaveChanged = this.hideSubmenuOnMouseLeaveChanged.bind(this); } render() { const { showFirstSubmenuModes, orientation, submenuDirection, hideSubmenuOnMouseLeave, currentProduct } = this.state; return ( <div className={'form'}> <div> <div className={'label'}>Catalog:</div> <Menu dataSource={this.products} displayExpr={'name'} showFirstSubmenuMode={showFirstSubmenuModes} orientation={orientation} submenuDirection={submenuDirection} hideSubmenuOnMouseLeave={hideSubmenuOnMouseLeave} onItemClick={this.itemClick} /> {currentProduct && <div id={'product-details'}> <img src={currentProduct.icon} /> <div className={'name'}>{currentProduct.name}</div> <div className={'price'}>{`$${ currentProduct.price}`}</div> </div> } </div> <div className={'options'}> <div className={'caption'}>Options</div> <div className={'option'}> <div>Show First Submenu Mode</div> <SelectBox items={this.showSubmenuModes} displayExpr={'name'} value={showFirstSubmenuModes} onValueChanged={this.showSubmenuModeChanged} /> </div> <div className={'option'}> <div>Orientation</div> <SelectBox items={['horizontal', 'vertical']} value={orientation} onValueChanged={this.orientationChanged} /> </div> <div className={'option'}> <div>Submenu Direction</div> <SelectBox items={['auto', 'rightOrBottom', 'leftOrTop']} value={submenuDirection} onValueChanged={this.submenuDirectionChanged} /> </div> <div className={'option'}> <CheckBox text={'Hide Submenu on Mouse Leave'} value={hideSubmenuOnMouseLeave} onValueChanged={this.hideSubmenuOnMouseLeaveChanged} /> </div> </div> </div> ); } itemClick(e) { if(e.itemData.price) { this.setState({ currentProduct: e.itemData }); } } showSubmenuModeChanged(e) { this.setState({ showFirstSubmenuModes: e.value }); } orientationChanged(e) { this.setState({ orientation: e.value }); } submenuDirectionChanged(e) { this.setState({ submenuDirection: e.value }); } hideSubmenuOnMouseLeaveChanged(e) { this.setState({ hideSubmenuOnMouseLeave: e.value }); } } 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/19.1.6/css/dx.common.css" /> <link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/19.1.6/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>
.form { margin-left: 3px; } .form > div:first-child { margin-right: 320px; } .label { font-size: 22px; } #product-details { width: 400px; height: 400px; margin: 20px auto 0; } #product-details > img { height: 300px; width: 400px; } #product-details > .name { text-align: center; font-size: 20px; } #product-details > .price { text-align: center; font-size: 24px; } .dark #product-details > div { color: #f0f0f0; } .options { padding: 20px; position: absolute; bottom: 0; right: 0; width: 260px; top: 0; background-color: rgba(191, 191, 191, 0.15); } .caption { font-size: 18px; font-weight: 500; } .option { margin-top: 10px; } .hidden { visibility: hidden; }
const products = [{ id: '1', name: 'Video Players', items: [{ id: '1_1', name: 'HD Video Player', price: 220, icon: '../../../../images/products/1.png' }, { id: '1_2', name: 'SuperHD Video Player', icon: '../../../../images/products/2.png', price: 270 }] }, { id: '2', name: 'Televisions', items: [{ id: '2_1', name: 'SuperLCD 42', icon: '../../../../images/products/7.png', price: 1200 }, { id: '2_2', name: 'SuperLED 42', icon: '../../../../images/products/5.png', price: 1450 }, { id: '2_3', name: 'SuperLED 50', icon: '../../../../images/products/4.png', price: 1600 }, { id: '2_4', name: 'SuperLCD 55 (Not available)', icon: '../../../../images/products/6.png', price: 1350, disabled: true }, { id: '2_5', name: 'SuperLCD 70', icon: '../../../../images/products/9.png', price: 4000 }] }, { id: '3', name: 'Monitors', items: [{ id: '3_1', name: '19"', items: [{ id: '3_1_1', name: 'DesktopLCD 19', icon: '../../../../images/products/10.png', price: 160 }] }, { id: '3_2', name: '21"', items: [{ id: '3_2_1', name: 'DesktopLCD 21', icon: '../../../../images/products/12.png', price: 170 }, { id: '3_2_2', name: 'DesktopLED 21', icon: '../../../../images/products/13.png', price: 175 }] }] }, { id: '4', name: 'Projectors', items: [{ id: '4_1', name: 'Projector Plus', icon: '../../../../images/products/14.png', price: 550 }, { id: '4_2', name: 'Projector PlusHD', icon: '../../../../images/products/15.png', price: 750 }] }]; export default { getProducts() { return products; } };
System.config({ transpiler: 'plugin-babel', paths: { 'npm:': 'https://unpkg.com/' }, defaultExtension: 'js', map: { 'react': 'npm:react@16/umd/react.development.js', 'react-dom': 'npm:react-dom@16/umd/react-dom.development.js', 'prop-types': 'npm:prop-types/prop-types.js', 'devextreme': 'npm:devextreme@19.1', 'devextreme-react': 'npm:devextreme-react@19.1', 'jszip': 'npm:jszip@3.1.3/dist/jszip.min.js', 'quill': 'npm:quill@1.3.6/dist/quill.js', 'devexpress-diagram': 'npm:devexpress-diagram', // SystemJS plugins 'plugin-babel': 'npm:systemjs-plugin-babel@0/plugin-babel.js', 'systemjs-babel-build': 'npm:systemjs-plugin-babel@0/systemjs-babel-browser.js' }, packages: { 'devextreme': { defaultExtension: 'js' }, 'devextreme-react': { main: 'index.js' } }, babelOptions: { sourceMaps: false, stage0: true, react: true } });