Vue MultiView - Accessibility

Accessibility Features Overview

NOTE

The overall accessibility level of your application depends on the MultiView features 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 MultiView 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)	MultiView 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 MultiView component:

Key	Action
← / ↑	Moves focus to the previous view.
→ / ↓	Moves focus to the next view.
Home	Moves focus to the first view.
End	Moves focus to the last view.

Use the registerKeyHandler(key, handler) method to implement a custom handler for a key.

jQuery

JavaScript

function registerKeyHandlers () {
    const multiView = $("#multiViewContainer").dxMultiView("instance");
    multiView.registerKeyHandler("backspace", function(e) {
        // The argument "e" contains information on the event
    });
    multiView.registerKeyHandler("space", function(e) {
        // ...
    });
}

Angular

TypeScript

import { ..., ViewChild, AfterViewInit } from '@angular/core';
import { DxMultiViewModule, DxMultiViewComponent } from 'devextreme-angular';
// ...
export class AppComponent implements AfterViewInit {
    @ViewChild(DxMultiViewComponent, { static: false }) multiView: DxMultiViewComponent;
    // Prior to Angular 8
    // @ViewChild(DxMultiViewComponent) multiView: DxMultiViewComponent;

    ngAfterViewInit () {
        this.multiView.instance.registerKeyHandler('backspace', function(e) {
            // The argument "e" contains information on the event
        });
        this.multiView.instance.registerKeyHandler('space', function(e) {
            // ...
        });
    }
}
@NgModule({
    imports: [
        // ...
        DxMultiViewModule
    ],
    // ...
})

Vue

<template>
    <DxMultiView :ref="myMultiViewRef" />
</template>
<script>
import 'devextreme/dist/css/dx.light.css';

import DxMultiView from 'devextreme-vue/multi-view';

const myMultiViewRef = 'my-multi-view';

export default {
    components: {
        DxMultiView
    },
    data() {
        return {
            myMultiViewRef
        }
    },
    computed: {
        multiView: function() {
            return this.$refs[myMultiViewRef].instance;
        }
    },
    mounted: function() {
        this.multiView.registerKeyHandler('backspace', function(e) {
            // The argument "e" contains information on the event
        });
        this.multiView.registerKeyHandler('space', function(e) {
            // ...
        });
    }
}
</script>

React

App.js

import React from 'react';
import 'devextreme/dist/css/dx.light.css';

import { MultiView } from 'devextreme-react/multi-view';

class App extends React.Component {
    constructor(props) {
        super(props);

        this.multiViewRef = React.createRef();
    }

    render() {
        return (
            <MultiView ref={this.multiViewRef} />
        );
    }

    get multiView() {
        return this.multiViewRef.current.instance();
    }

    componentDidMount() {
        this.multiView.registerKeyHandler('backspace', function(e) {
            // The argument "e" contains information on the event
        });
        this.multiView.registerKeyHandler('space', function(e) {
            // ...
        });
    }
}

export default App;

Screen Reader Support

The MultiView component supports screen readers and complies to WAI-ARIA standards.