/**
 * File skip-link-focus-fix.js.
 *
 * Helps with accessibility for keyboard only users.
 *
 * Learn more: https://git.io/vWdr2
 */
( function() {
	var isIe = /(trident|msie)/i.test( navigator.userAgent );

	if ( isIe && document.getElementById && window.addEventListener ) {
		window.addEventListener( 'hashchange', function() {
			var id = location.hash.substring( 1 ),
				element;

			if ( ! ( /^[A-z0-9_-]+$/.test( id ) ) ) {
				return;
			}

			element = document.getElementById( id );

			if ( element ) {
				if ( ! ( /^(?:a|select|input|button|textarea)$/i.test( element.tagName ) ) ) {
					element.tabIndex = -1;
				}

				element.focus();
			}
		}, false );
	}

	jQuery( function ( $ ) {

		// Properly update the ARIA states on focus (keyboard) and mouse over events
		$( '[role="menubar"]' ).on( 'focus.aria  mouseenter.aria', '[aria-haspopup="true"]', function ( ev ) {
			$( ev.currentTarget ).attr( 'aria-expanded', true );
		} );

		// Properly update the ARIA states on blur (keyboard) and mouse out events
		$( '[role="menubar"]' ).on( 'blur.aria  mouseleave.aria', '[aria-haspopup="true"]', function ( ev ) {
			$( ev.currentTarget ).attr( 'aria-expanded', false );
		} );
	} );


} )();