window.wp = window.wp || {};

( function ( wp, $ ) {

	'use strict';

	var $container;

	/**

	 * Update the ARIA live notification area text node.

	 *

	 * @since 4.2.0

	 *

	 * @param {String} message

	 */

	function speak( message ) {

		if ( $container ) {

			$container.text( message );

		}

	}

	/**

	 * Initialize wp.a11y and define ARIA live notification area.

	 *

	 * @since 4.2.0

	 */

	$( document ).ready( function() {

		$container = $( '#wp-a11y-speak' );

		if ( ! $container.length ) {

			$container = $( '<div>', {

				id: 'wp-a11y-speak',

				role: 'status',

				'aria-live': 'polite',

				'aria-relevant': 'all',

				'aria-atomic': 'true',

				'class': 'screen-reader-text'

			} );

			$( document.body ).append( $container );

		}

	} );

	wp.a11y = wp.a11y || {};

	wp.a11y.speak = speak;

} )( window.wp, window.jQuery );