138 lines
3.7 KiB
JavaScript
138 lines
3.7 KiB
JavaScript
/**
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* File skip-link-focus-fix.js.
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*
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* Helps with accessibility for keyboard only users.
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*
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* Learn more: https://git.io/vWdr2
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*/
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( function() {
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var isIe = /(trident|msie)/i.test( navigator.userAgent );
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if ( isIe && document.getElementById && window.addEventListener ) {
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window.addEventListener( 'hashchange', function() {
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var id = location.hash.substring( 1 ),
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element;
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if ( ! ( /^[A-z0-9_-]+$/.test( id ) ) ) {
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return;
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}
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element = document.getElementById( id );
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if ( element ) {
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if ( ! ( /^(?:a|select|input|button|textarea)$/i.test( element.tagName ) ) ) {
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element.tabIndex = -1;
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}
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element.focus();
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}
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}, false );
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}
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} )();
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( function() {
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'use strict';
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if ( 'querySelector' in document && 'addEventListener' in window ) {
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var body = document.body;
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body.addEventListener( 'mousedown', function() {
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body.classList.add( 'using-mouse' );
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} );
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body.addEventListener( 'keydown', function() {
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body.classList.remove( 'using-mouse' );
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} );
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}
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} )();
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( function() {
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'use strict';
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if ( 'querySelector' in document && 'addEventListener' in window && document.body.classList.contains( 'dropdown-hover' ) ) {
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var navLinks = document.querySelectorAll( 'nav .main-nav ul a' );
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/**
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* Make menu items tab accessible when using the hover dropdown type
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*/
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var toggleFocus = function() {
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if ( this.closest( 'nav' ).classList.contains( 'toggled' ) || this.closest( 'nav' ).classList.contains( 'slideout-navigation' ) ) {
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return;
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}
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var self = this;
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while ( -1 === self.className.indexOf( 'main-nav' ) ) {
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if ( 'li' === self.tagName.toLowerCase() ) {
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if ( -1 !== self.className.indexOf( 'sfHover' ) ) {
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self.className = self.className.replace( ' sfHover', '' );
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} else {
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self.className += ' sfHover';
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}
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}
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self = self.parentElement;
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}
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}
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for ( var i = 0; i < navLinks.length; i++ ) {
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navLinks[i].addEventListener( 'focus', toggleFocus );
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navLinks[i].addEventListener( 'blur', toggleFocus );
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}
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}
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/**
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* Make hover dropdown touch-friendly.
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*/
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if ( 'ontouchend' in document.documentElement && document.body.classList.contains( 'dropdown-hover' ) ) {
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var parentElements = document.querySelectorAll( '.sf-menu .menu-item-has-children' );
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for ( var i = 0; i < parentElements.length; i++ ) {
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parentElements[i].addEventListener( 'touchend', function( e ) {
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// Bail on mobile
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if ( this.closest( 'nav' ).classList.contains( 'toggled' ) ) {
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return;
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}
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if ( e.touches.length === 1 || e.touches.length === 0 ) {
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// Prevent touch events within dropdown bubbling down to document
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e.stopPropagation();
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// Toggle hover
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if ( ! this.classList.contains( 'sfHover' ) ) {
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// Prevent link on first touch
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if ( e.target === this || e.target.parentNode === this || e.target.parentNode.parentNode ) {
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e.preventDefault();
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}
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// Close other sub-menus
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var openedSubMenus = this.closest( 'nav' ).querySelectorAll( 'ul.toggled-on' );
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if ( openedSubMenus && ! this.closest( 'ul' ).classList.contains( 'toggled-on' ) && ! this.closest( 'li' ).classList.contains( 'sfHover' ) ) {
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for ( var o = 0; o < openedSubMenus.length; o++ ) {
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openedSubMenus[o].classList.remove( 'toggled-on' );
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openedSubMenus[o].closest( 'li' ).classList.remove( 'sfHover' );
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}
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}
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this.classList.add( 'sfHover' );
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// Hide dropdown on touch outside
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var closeDropdown,
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thisItem = this;
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document.addEventListener( 'touchend', closeDropdown = function(e) {
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e.stopPropagation();
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thisItem.classList.remove( 'sfHover' );
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document.removeEventListener( 'touchend', closeDropdown );
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} );
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}
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}
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} );
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}
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}
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})();
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