128 lines
3.6 KiB
JavaScript
128 lines
3.6 KiB
JavaScript
( 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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if ( body.classList.contains( 'dropdown-hover' ) ) {
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var navLinks = document.querySelectorAll( 'nav .main-nav ul a' ),
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menuBarItems = document.querySelectorAll( '.menu-bar-items .menu-bar-item > 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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self.classList.toggle( 'sfHover' );
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}
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self = self.parentElement;
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}
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}
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/**
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* Make our menu bar items tab accessible.
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*/
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var toggleMenuBarItemFocus = 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( 'menu-bar-items' ) ) {
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if ( self.classList.contains( 'menu-bar-item' ) ) {
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self.classList.toggle( 'sfHover' );
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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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for ( var i = 0; i < menuBarItems.length; i++ ) {
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menuBarItems[i].addEventListener( 'focus', toggleMenuBarItemFocus );
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menuBarItems[i].addEventListener( 'blur', toggleMenuBarItemFocus );
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}
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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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var getSiblings = function( elem ) {
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return Array.prototype.filter.call( elem.parentNode.children, function( sibling ) {
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return sibling !== elem;
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} );
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};
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// Close other sub-menus.
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var closestLi = this.closest( 'li' ),
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siblings = getSiblings( closestLi );
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for ( var i = 0; i < siblings.length; i++ ) {
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if ( siblings[i].classList.contains( 'sfHover' ) ) {
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siblings[i].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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