Accessibility Features Overview
NOTE
The overall accessibility level of your application depends on the HTML Editor 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 HTML Editor 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) |
HTML Editor does not support Windows High Contrast themes. |
501 (Web)(Software) 504.2 (Authoring Tool) 602.3 (Support Docs) |
2.1.1 Keyboard (Level A) 11.5.2.12 Execution of available actions |
Users cannot resize images, Popup, and Resizable controls within HTML Editor. |
501 (Web)(Software) 504.2 (Authoring Tool) 602.3 (Support Docs) |
2.1.2 No Keyboard Trap (Level A) | The keyboard shortcut to focus out of the component does not exist. |
- | 4.1.2 Name, Role, Value | NVDA does not pronounce the state of the button in the toolbar (active or not). |
504.2.2 PDF Export | - |
If you export content from an HTML Editor to PDF, the following issues occur in the resulting document:
|
Keyboard Navigation
A user can use the following keys to interact with the HTML Editor component:
PC | Mac | Action |
---|---|---|
Ctrl + C | ⌘ + C | Copy |
Ctrl + V | ⌘ + V | Paste |
Ctrl + Z | ⌘ + Z | Undo |
Ctrl + Y | ⌘ + Y | Redo |
Ctrl + A | ⌘ + A | Select All |
Ctrl + B | ⌘ + B | Bold |
Ctrl + I | ⌘ + I | Italic |
Enter | Insert a line break (a new paragraph) | |
Shift + Enter | Insert a line break (in the same paragraph) | |
Tab | Nest current list item (when in a list) | |
Increase indentation (when at the start of a paragraph) | ||
Move the cursor to the next table cell | ||
Shift + Tab | Move the cursor to the previous table cell | |
Decrease indentation (when at the start of a paragraph) | ||
↑ → ↓ ← | Navigate through the table | |
Enter | Move the cursor outside the table (when in the last row) | |
Esc | Close active dialog | |
Enter | Apply active dialog data |
Use the registerKeyHandler(key, handler) method to implement a custom handler for a key.
jQuery
JavaScript
function registerKeyHandlers () { const htmlEditor = $("#htmlEditorContainer").dxHtmlEditor("instance"); htmlEditor.registerKeyHandler("backspace", function(e) { // The argument "e" contains information on the event }); htmlEditor.registerKeyHandler("space", function(e) { // ... }); }
Angular
TypeScript
import { ..., ViewChild, AfterViewInit } from '@angular/core'; import { DxHtmlEditorModule, DxHtmlEditorComponent } from 'devextreme-angular'; // ... export class AppComponent implements AfterViewInit { @ViewChild(DxHtmlEditorComponent, { static: false }) htmlEditor: DxHtmlEditorComponent; // Prior to Angular 8 // @ViewChild(DxHtmlEditorComponent) htmlEditor: DxHtmlEditorComponent; ngAfterViewInit () { this.htmlEditor.instance.registerKeyHandler('backspace', function(e) { // The argument "e" contains information on the event }); this.htmlEditor.instance.registerKeyHandler('space', function(e) { // ... }); } } @NgModule({ imports: [ // ... DxHtmlEditorModule ], // ... })
Vue
<template> <DxHtmlEditor :ref="myHtmlEditorRef" /> </template> <script> import 'devextreme/dist/css/dx.light.css'; import DxHtmlEditor from 'devextreme-vue/html-editor'; const myHtmlEditorRef = 'my-html-editor'; export default { components: { DxHtmlEditor }, data() { return { myHtmlEditorRef } }, computed: { htmlEditor: function() { return this.$refs[myHtmlEditorRef].instance; } }, mounted: function() { this.htmlEditor.registerKeyHandler('backspace', function(e) { // The argument "e" contains information on the event }); this.htmlEditor.registerKeyHandler('space', function(e) { // ... }); } } </script>
React
App.js
import React from 'react'; import 'devextreme/dist/css/dx.light.css'; import { HtmlEditor } from 'devextreme-react/html-editor'; class App extends React.Component { constructor(props) { super(props); this.htmlEditorRef = React.createRef(); } render() { return ( <HtmlEditor ref={this.htmlEditorRef} /> ); } get htmlEditor() { return this.htmlEditorRef.current.instance(); } componentDidMount() { this.htmlEditor.registerKeyHandler('backspace', function(e) { // The argument "e" contains information on the event }); this.htmlEditor.registerKeyHandler('space', function(e) { // ... }); } } export default App;
Screen Reader Support
The HTML Editor component supports screen readers and complies to WAI-ARIA standards.
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