DevExtreme Accessibility Compliance
DevExtreme component libraries meet a variety of WCAG and Section 508 compliance standards. To assess this demo’s accessibility level, click the Run AXE® Validation button to launch the AXE® web accessibility evaluation tool.
All trademarks or registered trademarks are property of their respective owners. AXE® Terms of Use
The overall accessibility level of your application depends on the DropDownButton features used.
Feel free to share demo-related thoughts here.
If you have technical questions, please create a support ticket in the DevExpress Support Center.
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If you have technical questions, please create a support ticket in the DevExpress Support Center.
Backend API
import React, { useCallback, useMemo, useState } from 'react';
import DropDownButton, { DropDownButtonTypes } from 'devextreme-react/drop-down-button';
import Toolbar from 'devextreme-react/toolbar';
import { Template } from 'devextreme-react/core/template';
import { ButtonTypes } from 'devextreme-react/button';
import notify from 'devextreme/ui/notify';
import service from './data.ts';
import ColorIcon from './ColorIcon.tsx';
import DropDownButtonTemplate from './DropDownButtonTemplate.tsx';
import 'whatwg-fetch';
type TextAlign = 'center' | 'end' | 'justify' | 'left' | 'match-parent' | 'right' | 'start';
const buttonDropDownOptions = { width: 230 };
const data = service.getData();
const itemTemplateRender: React.FC<{ size: number; text: string }> = (item) => (
<div style={{ fontSize: `${item.size}px` }}>
{item.text}
</div>
);
const App: React.FC = () => {
const [alignment, setAlignment] = useState<TextAlign>('left');
const [color, setColor] = useState(null);
const [fontSize, setFontSize] = useState(14);
const [lineHeight, setLineHeight] = useState(1.35);
const [colorPicker, setColorPicker] = useState(null);
const onButtonClick = useCallback((e: ButtonTypes.ClickEvent) => {
notify(`Go to ${e.element.querySelector('.button-title').textContent}'s profile`, 'success', 600);
}, []);
const onItemClick = useCallback((e: DropDownButtonTypes.ItemClickEvent) => {
notify(e.itemData.name || e.itemData, 'success', 600);
}, []);
const onColorClick = useCallback((selectedColor) => {
setColor(selectedColor);
const squareIcon = colorPicker.element().getElementsByClassName('dx-icon-square')[0];
squareIcon.style.color = selectedColor;
colorPicker.close();
}, [colorPicker]);
const onInitialized = useCallback((e: DropDownButtonTypes.InitializedEvent) => {
setColorPicker(e.component);
}, [setColorPicker]);
const toolbarItems = useMemo(() => [
{
location: 'before',
widget: 'dxDropDownButton',
options: {
displayExpr: 'name',
keyExpr: 'id',
selectedItemKey: 3,
width: 125,
stylingMode: 'text',
useSelectMode: true,
onSelectionChanged: (e): void => {
setAlignment(e.item.name.toLowerCase());
},
items: data.alignments,
},
},
{
location: 'before',
widget: 'dxDropDownButton',
options: {
items: data.colors,
icon: 'square',
stylingMode: 'text',
dropDownOptions: { width: 'auto' },
onInitialized,
dropDownContentTemplate: 'colorpicker',
},
},
{
location: 'before',
widget: 'dxDropDownButton',
options: {
stylingMode: 'text',
displayExpr: 'text',
keyExpr: 'size',
useSelectMode: true,
items: data.fontSizes,
selectedItemKey: 14,
onSelectionChanged: (e: DropDownButtonTypes.SelectionChangedEvent): void => {
setFontSize(e.item.size);
},
itemTemplate: 'fontItem',
},
},
{
location: 'before',
widget: 'dxDropDownButton',
options: {
stylingMode: 'text',
icon: 'indent',
displayExpr: 'text',
keyExpr: 'lineHeight',
useSelectMode: true,
items: data.lineHeights,
selectedItemKey: 1.35,
onSelectionChanged: (e: DropDownButtonTypes.SelectionChangedEvent): void => {
setLineHeight(e.item.lineHeight);
},
},
},
], [setAlignment, setFontSize, setLineHeight, onInitialized]);
return (
<div>
<div className="dx-fieldset">
<div className="dx-fieldset-header">Standalone button</div>
<div className="dx-field">
<div className="dx-field-label">
Text and icon
</div>
<div className="dx-field-value">
<DropDownButton
text="Download Trial"
icon="save"
dropDownOptions={buttonDropDownOptions}
items={data.downloads}
onItemClick={onItemClick}
/>
</div>
</div>
<div className="dx-field">
<div className="dx-field-label">
Custom template and actions
</div>
<div className="dx-field-value">
<DropDownButton
id="custom-template"
splitButton={true}
useSelectMode={false}
items={data.profileSettings}
displayExpr="name"
keyExpr="id"
onButtonClick={onButtonClick}
onItemClick={onItemClick}
render={DropDownButtonTemplate}
>
</DropDownButton>
</div>
</div>
</div>
<div className="dx-fieldset">
<div className="dx-fieldset-header">Embedded in a Toolbar</div>
<div className="dx-field">
<Toolbar items={toolbarItems}>
<Template name="colorpicker">
<div className="custom-color-picker">
{data.colors.map((colorValue, i) => (
<ColorIcon key={i} color={colorValue} onClick={onColorClick} />
))}
</div>
</Template>
<Template name="fontItem" render={itemTemplateRender}>
</Template>
</Toolbar>
</div>
<div className="dx-field" style={{
color,
textAlign: alignment,
lineHeight,
fontSize: `${fontSize}px`,
}}>
<p id="text">Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.</p>
</div>
</div>
</div>
);
};
export default App;
import React, { useCallback, useMemo, useState } from 'react';
import DropDownButton from 'devextreme-react/drop-down-button';
import Toolbar from 'devextreme-react/toolbar';
import { Template } from 'devextreme-react/core/template';
import notify from 'devextreme/ui/notify';
import service from './data.js';
import ColorIcon from './ColorIcon.js';
import DropDownButtonTemplate from './DropDownButtonTemplate.js';
import 'whatwg-fetch';
const buttonDropDownOptions = { width: 230 };
const data = service.getData();
const itemTemplateRender = (item) => <div style={{ fontSize: `${item.size}px` }}>{item.text}</div>;
const App = () => {
const [alignment, setAlignment] = useState('left');
const [color, setColor] = useState(null);
const [fontSize, setFontSize] = useState(14);
const [lineHeight, setLineHeight] = useState(1.35);
const [colorPicker, setColorPicker] = useState(null);
const onButtonClick = useCallback((e) => {
notify(
`Go to ${e.element.querySelector('.button-title').textContent}'s profile`,
'success',
600,
);
}, []);
const onItemClick = useCallback((e) => {
notify(e.itemData.name || e.itemData, 'success', 600);
}, []);
const onColorClick = useCallback(
(selectedColor) => {
setColor(selectedColor);
const squareIcon = colorPicker.element().getElementsByClassName('dx-icon-square')[0];
squareIcon.style.color = selectedColor;
colorPicker.close();
},
[colorPicker],
);
const onInitialized = useCallback(
(e) => {
setColorPicker(e.component);
},
[setColorPicker],
);
const toolbarItems = useMemo(
() => [
{
location: 'before',
widget: 'dxDropDownButton',
options: {
displayExpr: 'name',
keyExpr: 'id',
selectedItemKey: 3,
width: 125,
stylingMode: 'text',
useSelectMode: true,
onSelectionChanged: (e) => {
setAlignment(e.item.name.toLowerCase());
},
items: data.alignments,
},
},
{
location: 'before',
widget: 'dxDropDownButton',
options: {
items: data.colors,
icon: 'square',
stylingMode: 'text',
dropDownOptions: { width: 'auto' },
onInitialized,
dropDownContentTemplate: 'colorpicker',
},
},
{
location: 'before',
widget: 'dxDropDownButton',
options: {
stylingMode: 'text',
displayExpr: 'text',
keyExpr: 'size',
useSelectMode: true,
items: data.fontSizes,
selectedItemKey: 14,
onSelectionChanged: (e) => {
setFontSize(e.item.size);
},
itemTemplate: 'fontItem',
},
},
{
location: 'before',
widget: 'dxDropDownButton',
options: {
stylingMode: 'text',
icon: 'indent',
displayExpr: 'text',
keyExpr: 'lineHeight',
useSelectMode: true,
items: data.lineHeights,
selectedItemKey: 1.35,
onSelectionChanged: (e) => {
setLineHeight(e.item.lineHeight);
},
},
},
],
[setAlignment, setFontSize, setLineHeight, onInitialized],
);
return (
<div>
<div className="dx-fieldset">
<div className="dx-fieldset-header">Standalone button</div>
<div className="dx-field">
<div className="dx-field-label">Text and icon</div>
<div className="dx-field-value">
<DropDownButton
text="Download Trial"
icon="save"
dropDownOptions={buttonDropDownOptions}
items={data.downloads}
onItemClick={onItemClick}
/>
</div>
</div>
<div className="dx-field">
<div className="dx-field-label">Custom template and actions</div>
<div className="dx-field-value">
<DropDownButton
id="custom-template"
splitButton={true}
useSelectMode={false}
items={data.profileSettings}
displayExpr="name"
keyExpr="id"
onButtonClick={onButtonClick}
onItemClick={onItemClick}
render={DropDownButtonTemplate}
></DropDownButton>
</div>
</div>
</div>
<div className="dx-fieldset">
<div className="dx-fieldset-header">Embedded in a Toolbar</div>
<div className="dx-field">
<Toolbar items={toolbarItems}>
<Template name="colorpicker">
<div className="custom-color-picker">
{data.colors.map((colorValue, i) => (
<ColorIcon
key={i}
color={colorValue}
onClick={onColorClick}
/>
))}
</div>
</Template>
<Template
name="fontItem"
render={itemTemplateRender}
></Template>
</Toolbar>
</div>
<div
className="dx-field"
style={{
color,
textAlign: alignment,
lineHeight,
fontSize: `${fontSize}px`,
}}
>
<p id="text">
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor
incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud
exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure
dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur.
Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt
mollit anim id est laborum.
</p>
</div>
</div>
</div>
);
};
export default App;
import React from 'react';
interface ColorIconProps {
key: number;
color: string;
onClick: Function;
}
class ColorIcon extends React.Component<ColorIconProps> {
constructor(props) {
super(props);
this.onClick = this.onClick.bind(this);
}
onClick(): void {
this.props.onClick(this.props.color);
}
render(): JSX.Element {
return (
<i
onClick={this.onClick}
className="color dx-icon dx-icon-square"
style={{ color: this.props.color }}
/>
);
}
}
export default ColorIcon;
import React from 'react';
const Avatar: React.FC<{ icon: string }> = ({ icon }) => (
<div className="button-img-container">
<div className="button-img-indicator"></div>
<img className="button-img" src={icon} alt="employee" />
</div>
);
const ButtonDescription: React.FC<{ text: string; description: string }> = ({ text, description }) => (
<div className="text-container">
<div className="button-title">{text}</div>
<div className="button-row">{description}</div>
</div>
);
const DropDownButtonTemplate: React.FC = () => (
<React.Fragment>
<Avatar icon="../../../../images/employees/51.png" />
<ButtonDescription text="Olivia Peyton" description="IT Manager" />
</React.Fragment>
);
export default DropDownButtonTemplate;
import React from 'react';
import ReactDOM from 'react-dom';
import App from './App.tsx';
ReactDOM.render(
<App />,
document.getElementById('app'),
);
const colors = [null, '#980000', '#ff0000', '#ff9900', '#ffff00', '#00ff00', '#00ffff', '#4a86e8', '#0000ff', '#9900ff', '#ff00ff', '#ff3466'];
const profileSettings = [
{ id: 1, name: 'Profile', icon: 'user' },
{
id: 4, name: 'Messages', icon: 'email', badge: '5',
},
{ id: 2, name: 'Friends', icon: 'group' },
{ id: 3, name: 'Exit', icon: 'runner' },
];
const downloads = ['Download Trial For Visual Studio', 'Download Trial For All Platforms', 'Package Managers'];
const alignments = [
{ id: 1, name: 'Left', icon: 'alignleft' },
{ id: 4, name: 'Right', icon: 'alignright' },
{ id: 2, name: 'Center', icon: 'aligncenter' },
{ id: 3, name: 'Justify', icon: 'alignjustify' },
];
const fontSizes = [
{ size: 10, text: '10px' },
{ size: 12, text: '12px' },
{ size: 14, text: '14px' },
{ size: 16, text: '16px' },
{ size: 18, text: '18px' },
];
const lineHeights = [
{ lineHeight: 1, text: '1' },
{ lineHeight: 1.35, text: '1.35' },
{ lineHeight: 1.5, text: '1.5' },
{ lineHeight: 2, text: '2' },
];
export default {
getData() {
return {
colors, profileSettings, downloads, alignments, fontSizes, lineHeights,
};
},
};
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,
},
},
paths: {
'npm:': 'https://unpkg.com/',
},
defaultExtension: 'js',
map: {
'ts': 'npm:plugin-typescript@4.2.4/lib/plugin.js',
'typescript': 'npm:typescript@4.2.4/lib/typescript.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@15.8.1/prop-types.js',
'whatwg-fetch': 'npm:whatwg-fetch@2.0.4/fetch.js',
'rrule': 'npm:rrule@2.6.4/dist/es5/rrule.js',
'luxon': 'npm:luxon@1.28.1/build/global/luxon.min.js',
'es6-object-assign': 'npm:es6-object-assign@1.1.0',
'devextreme': 'npm:devextreme@24.1.7/cjs',
'devextreme-react': 'npm:devextreme-react@24.1.7/cjs',
'jszip': 'npm:jszip@3.10.1/dist/jszip.min.js',
'devextreme-quill': 'npm:devextreme-quill@1.7.1/dist/dx-quill.min.js',
'devexpress-diagram': 'npm:devexpress-diagram@2.2.13/dist/dx-diagram.js',
'devexpress-gantt': 'npm:devexpress-gantt@4.1.56/dist/dx-gantt.js',
'@devextreme/runtime': 'npm:@devextreme/runtime@3.0.13',
'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@7.4.11/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@3.0.13/inferno/package.json',
],
babelOptions: {
sourceMaps: false,
stage0: true,
react: true,
},
};
System.config(window.config);
import React from 'react';
class ColorIcon extends React.Component {
constructor(props) {
super(props);
this.onClick = this.onClick.bind(this);
}
onClick() {
this.props.onClick(this.props.color);
}
render() {
return (
<i
onClick={this.onClick}
className="color dx-icon dx-icon-square"
style={{ color: this.props.color }}
/>
);
}
}
export default ColorIcon;
import React from 'react';
const Avatar = ({ icon }) => (
<div className="button-img-container">
<div className="button-img-indicator"></div>
<img
className="button-img"
src={icon}
alt="employee"
/>
</div>
);
const ButtonDescription = ({ text, description }) => (
<div className="text-container">
<div className="button-title">{text}</div>
<div className="button-row">{description}</div>
</div>
);
const DropDownButtonTemplate = () => (
<React.Fragment>
<Avatar icon="../../../../images/employees/51.png" />
<ButtonDescription
text="Olivia Peyton"
description="IT Manager"
/>
</React.Fragment>
);
export default DropDownButtonTemplate;
import React from 'react';
import ReactDOM from 'react-dom';
import App from './App.js';
ReactDOM.render(<App />, document.getElementById('app'));
const colors = [
null,
'#980000',
'#ff0000',
'#ff9900',
'#ffff00',
'#00ff00',
'#00ffff',
'#4a86e8',
'#0000ff',
'#9900ff',
'#ff00ff',
'#ff3466',
];
const profileSettings = [
{ id: 1, name: 'Profile', icon: 'user' },
{
id: 4,
name: 'Messages',
icon: 'email',
badge: '5',
},
{ id: 2, name: 'Friends', icon: 'group' },
{ id: 3, name: 'Exit', icon: 'runner' },
];
const downloads = [
'Download Trial For Visual Studio',
'Download Trial For All Platforms',
'Package Managers',
];
const alignments = [
{ id: 1, name: 'Left', icon: 'alignleft' },
{ id: 4, name: 'Right', icon: 'alignright' },
{ id: 2, name: 'Center', icon: 'aligncenter' },
{ id: 3, name: 'Justify', icon: 'alignjustify' },
];
const fontSizes = [
{ size: 10, text: '10px' },
{ size: 12, text: '12px' },
{ size: 14, text: '14px' },
{ size: 16, text: '16px' },
{ size: 18, text: '18px' },
];
const lineHeights = [
{ lineHeight: 1, text: '1' },
{ lineHeight: 1.35, text: '1.35' },
{ lineHeight: 1.5, text: '1.5' },
{ lineHeight: 2, text: '2' },
];
export default {
getData() {
return {
colors,
profileSettings,
downloads,
alignments,
fontSizes,
lineHeights,
};
},
};
<!DOCTYPE html>
<html lang="en">
<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=5.0" />
<link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/24.1.7/css/dx.light.css" />
<link rel="stylesheet" type="text/css" href="styles.css" />
<script src="https://unpkg.com/core-js@2.6.12/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.tsx");
</script>
</head>
<body class="dx-viewport">
<div class="demo-container">
<div id="app"></div>
</div>
</body>
</html>
.demo-container .dx-fieldset:first-child {
width: 500px;
}
.custom-color-picker {
width: 82px;
padding: 5px;
}
.color {
cursor: pointer;
font-size: 18px;
}
.text-container {
padding-inline-start: 12px;
padding-inline-end: 4px;
display: flex;
align-items: flex-start;
flex-direction: column;
}
.button-img-container {
position: relative;
height: 32px;
}
.button-img {
width: 32px;
height: 32px;
position: relative;
border-width: 1px;
border-style: solid;
border-color: var(--dx-color-border);
border-radius: 50%;
}
.button-img-indicator {
position: absolute;
background-color: var(--dx-color-danger);
top: -1px;
inset-inline-end: -1px;
width: 10px;
height: 10px;
border-radius: 50%;
border-width: 2px;
border-style: solid;
border-color: var(--dx-color-main-bg);
z-index: 1;
}
.button-title {
line-height: 20px;
}
.button-row {
font-size: 12px;
line-height: 14px;
opacity: 0.6;
}
#custom-template .dx-button {
height: 46px;
}
#custom-template .dx-button.dx-dropdownbutton-action .dx-button-content {
padding-inline-start: 12px;
padding-inline-end: 12px;
}
Menu items can be specified in the items or dataSource properties. Use dataSource if data is remote or should be processed.
DropDownButton stores the most recent selected menu item if you set the useSelectMode property to true. In this case, the button uses the selected item's text and icon.
To customize DropDownButton, specify the the following options:
-
itemTemplate
Customizes menu items. -
template
Customizes a base button. -
dropDownContentTemplate
Replaces the drop-down menu with custom content.
To track and handle events, use the onButtonClick, onItemClick, and onSelectionChanged event handlers.