Accessibility Features Overview
NOTE
The overall accessibility level of your application depends on the TabPanel features that you use.
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 TabPanel 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) |
TabPanel does not support Windows High Contrast themes. |
Keyboard Navigation
A user can use the following keys to interact with the TabPanel component:
Key | Action |
---|---|
← | Switches the UI component to the previous view. |
→ | Switches the UI component to the next view. |
Use the registerKeyHandler(key, handler) method to implement a custom handler for a key.
jQuery
JavaScript
function registerKeyHandlers () { const tabPanel = $("#tabPanelContainer").dxTabPanel("instance"); tabPanel.registerKeyHandler("backspace", function(e) { // The argument "e" contains information on the event }); tabPanel.registerKeyHandler("space", function(e) { // ... }); }
Angular
TypeScript
import { ..., ViewChild, AfterViewInit } from '@angular/core'; import { DxTabPanelModule, DxTabPanelComponent } from 'devextreme-angular'; // ... export class AppComponent implements AfterViewInit { @ViewChild(DxTabPanelComponent, { static: false }) tabPanel: DxTabPanelComponent; // Prior to Angular 8 // @ViewChild(DxTabPanelComponent) tabPanel: DxTabPanelComponent; ngAfterViewInit () { this.tabPanel.instance.registerKeyHandler('backspace', function(e) { // The argument "e" contains information on the event }); this.tabPanel.instance.registerKeyHandler('space', function(e) { // ... }); } } @NgModule({ imports: [ // ... DxTabPanelModule ], // ... })
Vue
<template> <DxTabPanel :ref="myTabPanelRef" /> </template> <script> import 'devextreme/dist/css/dx.light.css'; import DxTabPanel from 'devextreme-vue/tab-panel'; const myTabPanelRef = 'my-tab-panel'; export default { components: { DxTabPanel }, data() { return { myTabPanelRef } }, computed: { tabPanel: function() { return this.$refs[myTabPanelRef].instance; } }, mounted: function() { this.tabPanel.registerKeyHandler('backspace', function(e) { // The argument "e" contains information on the event }); this.tabPanel.registerKeyHandler('space', function(e) { // ... }); } } </script>
React
App.js
import React from 'react'; import 'devextreme/dist/css/dx.light.css'; import { TabPanel } from 'devextreme-react/tab-panel'; class App extends React.Component { constructor(props) { super(props); this.tabPanelRef = React.createRef(); } render() { return ( <TabPanel ref={this.tabPanelRef} /> ); } get tabPanel() { return this.tabPanelRef.current.instance(); } componentDidMount() { this.tabPanel.registerKeyHandler('backspace', function(e) { // The argument "e" contains information on the event }); this.tabPanel.registerKeyHandler('space', function(e) { // ... }); } } export default App;
Screen Reader Support
The TabPanel component supports screen readers and complies to WAI-ARIA standards.
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