https://signal-pumps.cyou/wp-content/themes/pubnews/assets/js/navigation.js?ver=1.0.0

1/**
2 * File navigation.js.
3 *
4 * Handles toggling the navigation menu for small screens and enables TAB key
5 * navigation support for dropdown menus.
6 */
7( function($) {
8	const siteNavigation = document.getElementById( 'site-navigation' ), KEYCODE_TAB = 9;;
9
10	// Return early if the navigation doesn't exist.
11	if ( ! siteNavigation ) {
12		return;
13	}
14
15	const button = siteNavigation.getElementsByTagName( 'button' )[ 0 ];
16
17	// Return early if the button doesn't exist.
18	if ( 'undefined' === typeof button ) {
19		return;
20	}
21
22	const menu = siteNavigation.getElementsByTagName( 'ul' )[ 0 ];
23
24	// Hide menu toggle button if menu is empty and return early.
25	if ( 'undefined' === typeof menu ) {
26		button.style.display = 'none';
27		return;
28	}
29
30	if ( ! menu.classList.contains( 'nav-menu' ) ) {
31		menu.classList.add( 'nav-menu' );
32	}
33
34	// Toggle the .toggled class and the aria-expanded value each time the button is clicked.
35	button.addEventListener( 'click', function() {
36		siteNavigation.classList.toggle( 'toggled' );
37
38		if ( button.getAttribute( 'aria-expanded' ) === 'true' ) {
39			button.setAttribute( 'aria-expanded', 'false' );
40		} else {
41			button.setAttribute( 'aria-expanded', 'true' );
42		}
43
44		// focus trap for menu
45		var menuElement = document.querySelector( '#site-navigation.toggled' );
46		if( menuElement ) {
47			document.addEventListener('keydown', function(e) {
48				if( document.querySelector( '#site-navigation.toggled' ) ) {
49					var focusable = document.querySelector( '#site-navigation.toggled' ).querySelectorAll( 'input, a, button, ul.sub-menu.isShow a' );
50					focusable = Array.prototype.slice.call( focusable );
51					focusable = focusable.filter( function( focusableelement ) {
52						return null !== focusableelement.offsetParent;
53					} );
54					var firstFocusable = document.querySelector('.menu-toggle');
55					var lastFocusable = focusable[focusable.length - 1];
56					pubnews_focus_trap( firstFocusable, lastFocusable, e );
57				}
58			})
59		}
60	} );
61
62	// focus trap for search
63	const searchElement = document.getElementsByClassName( 'search-wrap' )
64	if( searchElement.length > 0 ) {
65		const searchButton = searchElement[0].getElementsByTagName( 'button' )[ 0 ];
66		searchButton.addEventListener( 'click', function() {
67			var searchElementToggled = document.querySelector( '.search-wrap' );
68			if( searchElementToggled ) {
69				document.addEventListener('keydown', function(e) {
70					if( document.querySelector( '.search-wrap' ) ) {
71						var focusable = document.querySelector( '.search-wrap' ).querySelectorAll( 'input.search-field, input.search-submit, .search_close_btn' );
72						focusable = Array.prototype.slice.call( focusable );
73						focusable = focusable.filter( function( focusableelement ) {
74							return null !== focusableelement.offsetParent;
75						} );
76						var firstFocusable = document.querySelector('input.search-field');
77						var lastFocusable = focusable[focusable.length - 1];
78						pubnews_focus_trap( firstFocusable, lastFocusable, e );
79						if( e.which == 13 && e.target == document.querySelector('button.search-form-close') ) {
80							document.querySelector('button.search-form-close').click()
81							document.querySelector('button.search-trigger').focus()
82							e.preventDefault()
83						}
84					}
85				})
86			}	
87		});
88	}	
89
90	// Remove the .toggled class and set aria-expanded to false when the user clicks outside the navigation.
91	document.addEventListener( 'click', function( event ) {
92		const isClickInside = siteNavigation.contains( event.target );
93
94		if ( ! isClickInside ) {
95			siteNavigation.classList.remove( 'toggled' );
96			button.setAttribute( 'aria-expanded', 'false' );
97		}
98	} );
99
100	// Get all the link elements within the menu.
101	const links = menu.getElementsByTagName( 'a' );
102
103	// Get all the link elements with children within the menu.
104	const linksWithChildren = menu.querySelectorAll( '.menu-item-has-children > a, .page_item_has_children > a' );
105
106	// Toggle focus each time a menu link is focused or blurred.
107	for ( const link of links ) {
108		link.addEventListener( 'focus', toggleFocus, true );
109		link.addEventListener( 'blur', toggleFocus, true );
110	}
111
112	// Toggle focus each time a menu link with children receive a touch event.
113	for ( const link of linksWithChildren ) {
114		link.addEventListener( 'touchstart', toggleFocus, false );
115	}
116
117	/**

118	 * Sets or removes .focus class on an element.
119	 */
120	function toggleFocus() {
121		if ( event.type === 'focus' || event.type === 'blur' ) {
122			let self = this;
123			// Move up through the ancestors of the current link until we hit .nav-menu.
124			while ( ! self.classList.contains( 'nav-menu' ) ) {
125				// On li elements toggle the class .focus.
126				if ( 'li' === self.tagName.toLowerCase() ) {
127					self.classList.toggle( 'focus' );
128				}
129				self = self.parentNode;
130			}
131		}
132
133		if ( event.type === 'touchstart' ) {
134			const menuItem = this.parentNode;
135			for ( const link of menuItem.parentNode.children ) {
136				if ( menuItem !== link ) {
137					link.classList.remove( 'focus' );
138				}
139			}
140			menuItem.classList.toggle( 'focus' );
141		}
142	}
143
144	/**
145	 * Responsive header menu modal
146	 * 
147	 * @returns void
148	 * @since 1.0.0
149	 */
150	function pubnews_focus_trap( firstFocusable, lastFocusable, e ) {
151        if (e.key === 'Tab' || e.keyCode === KEYCODE_TAB) {
152            if ( e.shiftKey ) /* shift + tab */ {
153				if (document.activeElement === firstFocusable) {
154                    lastFocusable.focus();
155                    e.preventDefault();
156                }
157            } else /* tab */ {
158                if ( document.activeElement === lastFocusable ) {
159                    firstFocusable.focus();
160                    e.preventDefault();
161                }
162            }
163        }
164    }
165
166	/**
167	 * Responsive header sub menu toggler
168	 * 
169	 * @returns void
170	 * @since 1.0.0
171	 */
172	function dropdownMenuMobileHandle() {
173		if ( ! $( "#site-navigation .menu-item.menu-item-has-children" ).length > 0 && ! $( "#site-navigation .page_item.page_item_has_children" ).length > 0 ) {
174			return;
175		}
176		$( "#site-navigation .menu-item.menu-item-has-children .sub-menu, #site-navigation .page_item.page_item_has_children .children" ).before( '<a href="#" class="toggle-sub-menu"><i class="fas fa-plus"></i></a>' );
177		$(document).on( "click", "#site-navigation .toggle-sub-menu", function (e) {
178			e.preventDefault();
179			var _this = $(this)
180			_this.parent().siblings().children( ".sub-menu, .children" ).removeClass( "isShow" );
181			_this.siblings( ".sub-menu, .children" ).toggleClass( "isShow" );
182			_this.parent().siblings().find( "> .toggle-sub-menu i" ).removeClass("fa-minus").addClass("fa-plus");
183			if( _this.siblings( ".sub-menu, .children" ).hasClass( "isShow" ) ) {
184				_this.children().removeClass( "fa-plus" ).addClass( "fa-minus" );
185			} else {
186				_this.children().removeClass( "fa-minus" ).addClass( "fa-plus" );
187			}
188		});
189	}
190	dropdownMenuMobileHandle();
191
192}(jQuery) );