Angular Splitter - Accessibility

Accessibility Features Overview

NOTE
The overall accessibility level of your application depends on the Splitter 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 Splitter 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)
Splitter does not support Windows High Contrast themes.
501 (Web)(Software)
504.2 (Authoring Tool)
602.3 (Support Docs)
2.1.1 Keyboard (Level A) If a pane does not include focusable elements, and the pane content is larger than its container, the pane content will not be accessible.
To resolve the issue, assign tabindex="0" either to the non-focusable element or to the element with the dx-item-content dx-splitter-item-content class.

Keyboard Navigation

NOTE
Ensure that allowKeyboardNavigation is enabled.

A user can use the following keys to interact with the Splitter component:

Key Action
← → / ↑ ↓ Moves handle bar in a 5px step.
Ctrl + Arrow Collapses a pane.

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

jQuery
JavaScript
function registerKeyHandlers () {
    const splitter = $("#splitterContainer").dxSplitter("instance");
    splitter.registerKeyHandler("backspace", function(e) {
        // The argument "e" contains information on the event
    });
    splitter.registerKeyHandler("space", function(e) {
        // ...
    });
}
Angular
TypeScript
import { ..., ViewChild, AfterViewInit } from '@angular/core';
import { DxSplitterModule, DxSplitterComponent } from 'devextreme-angular';
// ...
export class AppComponent implements AfterViewInit {
    @ViewChild(DxSplitterComponent, { static: false }) splitter: DxSplitterComponent;
    // Prior to Angular 8
    // @ViewChild(DxSplitterComponent) splitter: DxSplitterComponent;

    ngAfterViewInit () {
        this.splitter.instance.registerKeyHandler('backspace', function(e) {
            // The argument "e" contains information on the event
        });
        this.splitter.instance.registerKeyHandler('space', function(e) {
            // ...
        });
    }
}
@NgModule({
    imports: [
        // ...
        DxSplitterModule
    ],
    // ...
})
Vue
<template>
    <DxSplitter :ref="mySplitterRef" />
</template>
<script>
import 'devextreme/dist/css/dx.light.css';

import DxSplitter from 'devextreme-vue/splitter';

const mySplitterRef = 'my-splitter';

export default {
    components: {
        DxSplitter
    },
    data() {
        return {
            mySplitterRef
        }
    },
    computed: {
        splitter: function() {
            return this.$refs[mySplitterRef].instance;
        }
    },
    mounted: function() {
        this.splitter.registerKeyHandler('backspace', function(e) {
            // The argument "e" contains information on the event
        });
        this.splitter.registerKeyHandler('space', function(e) {
            // ...
        });
    }
}
</script>
React
App.js
import React from 'react';
import 'devextreme/dist/css/dx.light.css';

import { Splitter } from 'devextreme-react/splitter';

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

        this.splitterRef = React.createRef();
    }

    render() {
        return (
            <Splitter ref={this.splitterRef} />
        );
    }

    get splitter() {
        return this.splitterRef.current.instance();
    }

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

export default App;

Screen Reader Support

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