Accessibility Features Overview
Accessibility Requirement | Support Level |
---|---|
Right-to-Left Support | |
Keyboard Navigation Support | |
Screen Reader Support | |
Contrast Color Theme | |
Mobile Device Support | |
Lighthouse Accessibility Validation | |
Axe Accessibility Validation | |
WAVE Accessibility Validation | |
Section 508 Support | |
WCAG 2.x Support |
- - All component features meet the requirement
- - Some component features may not meet the requirement
- - Accessibility requirement is not supported
Accessibility Standards Compliance
The Popup component meets a variety of Section 508 and WCAG 2.x compliance standards. Known exceptions:
Section 508 criteria | WCAG 2.x criteria | Exception description |
---|---|---|
501 (Web)(Software) 504.2 (Authoring Tool) 602.3 (Support Docs) |
1.4.3 Contrast (Minimum) (Level AA) 1.4.11 Non-text Contrast (Level AA 2.1 and 2.2) |
Popup does not support Windows High Contrast themes. |
501 (Web)(Software) 504.2 (Authoring Tool) 602.3 (Support Docs) |
4.1.2 Name, Role, Value (Level A) | Pressing drag arrows does not work when NVDA is enabled. |
Keyboard Navigation
A user can use the following keys to interact with the Popup component:
Key | Action |
---|---|
↑ → ↓ ← | Drags the popup when it is focused and dragEnabled is true. |
Esc | Closes the popup. |
Use the registerKeyHandler(key, handler) method to implement a custom handler for a key.
- import React from 'react';
- import 'devextreme/dist/css/dx.light.css';
- import { Popup } from 'devextreme-react/popup';
- class App extends React.Component {
- constructor(props) {
- super(props);
- this.popupRef = React.createRef();
- }
- render() {
- return (
- <Popup ref={this.popupRef} />
- );
- }
- get popup() {
- return this.popupRef.current.instance();
- }
- componentDidMount() {
- this.popup.registerKeyHandler('backspace', function(e) {
- // The argument "e" contains information on the event
- });
- this.popup.registerKeyHandler('space', function(e) {
- // ...
- });
- }
- }
- export default App;
Screen Reader Support
The Popup component supports screen readers and complies to WAI-ARIA standards.
The default Popup ARIA role is the non-modal dialog. If you use Popup as a modal, enable the aria-modal attribute as follows:
- import React from 'react';
- import Popup from 'devextreme-react/popup';
- const onShowingHandler = (e) => {
- const overlayContent = e.component.content().parentElement;
- overlayContent.setAttribute('aria-modal', 'true');
- };
- const App = () => {
- return (
- <Popup ...
- onShowing={onShowingHandler}
- />
- );
- };
- export default App;
You can also use this method to specify aria-label for the component:
- import React from 'react';
- import Popup from 'devextreme-react/popup';
- const onShowingHandler = (e) => {
- const overlayContent = e.component.content().parentElement;
- overlayContent.setAttribute("aria-label", "Dialog window");
- };
- const App = () => {
- return (
- <Popup ...
- onShowing={onShowingHandler}
- />
- );
- };
- export default App;
If you have technical questions, please create a support ticket in the DevExpress Support Center.