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 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. |
The component also complies with the European Accessibility Act (EAA) and Americans with Disabilities Act (ADA) directives.
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
function registerKeyHandlers () {
const tabPanel = $("#tabPanelContainer").dxTabPanel("instance");
tabPanel.registerKeyHandler("backspace", function(e) {
// The argument "e" contains information on the event
});
tabPanel.registerKeyHandler("space", function(e) {
// ...
});
}Angular
import { ..., ViewChild, AfterViewInit } from '@angular/core';
import { DxTabPanelModule, DxTabPanelComponent } from 'devextreme-angular';
// ...
export class AppComponent implements AfterViewInit {
@ViewChild(DxTabPanelComponent, { static: false }) tabPanel: DxTabPanelComponent;
// Prior to Angular 8
// @ViewChild(DxTabPanelComponent) tabPanel: DxTabPanelComponent;
ngAfterViewInit () {
this.tabPanel.instance.registerKeyHandler('backspace', function(e) {
// The argument "e" contains information on the event
});
this.tabPanel.instance.registerKeyHandler('space', function(e) {
// ...
});
}
}
@NgModule({
imports: [
// ...
DxTabPanelModule
],
// ...
})Vue
<template>
<DxTabPanel :ref="myTabPanelRef" />
</template>
<script>
import 'devextreme/dist/css/dx.light.css';
import DxTabPanel from 'devextreme-vue/tab-panel';
const myTabPanelRef = 'my-tab-panel';
export default {
components: {
DxTabPanel
},
data() {
return {
myTabPanelRef
}
},
computed: {
tabPanel: function() {
return this.$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
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.
If you have technical questions, please create a support ticket in the DevExpress Support Center.