0x1998 - MANAGER
Edit File: wp-a11y.js
/** * @output wp-includes/js/wp-a11y.js */ /** @namespace wp */ window.wp = window.wp || {}; ( function ( wp, $ ) { 'use strict'; var $containerPolite, $containerAssertive, previousMessage = ''; /** * Update the ARIA live notification area text node. * * @since 4.2.0 * @since 4.3.0 Introduced the 'ariaLive' argument. * * @param {String} message The message to be announced by Assistive Technologies. * @param {String} [ariaLive] The politeness level for aria-live. Possible values: * polite or assertive. Default polite. * @returns {void} */ function speak( message, ariaLive ) { // Clear previous messages to allow repeated strings being read out. clear(); // Ensure only text is sent to screen readers. message = $( '<p>' ).html( message ).text(); /* * Safari 10+VoiceOver don't announce repeated, identical strings. We use * a `no-break space` to force them to think identical strings are different. * See ticket #36853. */ if ( previousMessage === message ) { message = message + '\u00A0'; } previousMessage = message; if ( $containerAssertive && 'assertive' === ariaLive ) { $containerAssertive.text( message ); } else if ( $containerPolite ) { $containerPolite.text( message ); } } /** * Build the live regions markup. * * @since 4.3.0 * * @param {String} ariaLive Optional. Value for the 'aria-live' attribute, default 'polite'. * * @return {Object} $container The ARIA live region jQuery object. */ function addContainer( ariaLive ) { ariaLive = ariaLive || 'polite'; var $container = $( '<div>', { 'id': 'wp-a11y-speak-' + ariaLive, 'aria-live': ariaLive, 'aria-relevant': 'additions text', 'aria-atomic': 'true', 'class': 'screen-reader-text wp-a11y-speak-region' }); $( document.body ).append( $container ); return $container; } /** * Clear the live regions. * * @since 4.3.0 */ function clear() { $( '.wp-a11y-speak-region' ).text( '' ); } /** * Initialize wp.a11y and define ARIA live notification area. * * @since 4.2.0 * @since 4.3.0 Added the assertive live region. */ $( document ).ready( function() { $containerPolite = $( '#wp-a11y-speak-polite' ); $containerAssertive = $( '#wp-a11y-speak-assertive' ); if ( ! $containerPolite.length ) { $containerPolite = addContainer( 'polite' ); } if ( ! $containerAssertive.length ) { $containerAssertive = addContainer( 'assertive' ); } }); /** @namespace wp.a11y */ wp.a11y = wp.a11y || {}; wp.a11y.speak = speak; }( window.wp, window.jQuery ));