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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