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Edit File: navigation.js

/* global jQuery, UISearch */

/**
 * Theme functions file.
 *
 * Contains handlers for navigation and widget area.
 */

( function ( $ ) {
	'use strict';

const $document = $( document );
	const $window = $( window );

$.fn.TopMenuMargin = function () {
		$( window ).on( 'resize orientationchange', update );

function update() {
			// eslint-disable-next-line no-unused-vars
			const windowWidth = $( window ).width();

const $header = $( '.site-header' );
			const $mainContent = $( '#main' );

$mainContent.css( 'paddingTop', $header.outerHeight() );

// eslint-disable-next-line no-unused-vars
			const $adminbar = $( '#wpadminbar' );

// eslint-disable-next-line no-unused-vars
			const isHidden = true;
			// eslint-disable-next-line no-unused-vars
			const size = [ $( window ).width(), $( window ).height() ];
		}

update();
	};

$.fn.sideNav = function () {
		let wasPlaying = false;

function toggleNav() {
			$( document.body )
				.toggleClass( 'side-nav-open' )
				.addClass( 'side-nav-transitioning' );

let called = false;
			$( '.site' ).one( 'transitionend', function () {
				$( document.body ).removeClass( 'side-nav-transitioning' );
				called = true;
			} );

setTimeout( function () {
				if ( ! called ) {
					$( document.body ).removeClass( 'side-nav-transitioning' );
				}

$window.trigger( 'resize' );
			}, 230 );
		}

/* touchstart: do not allow scrolling main section then overlay is enabled (this is done via css) */
		$( '.navbar-toggle, .side-nav-overlay' ).on(
			'click touchend',
			function () {
				if ( $( document.body ).hasClass( 'side-nav-transitioning' ) ) {
					return;
				}

toggleNav();

$.fn.keepFocusInMobileSidebar();
			}
		);

/* allow closing sidenav with escape key */
		$document.on( 'keyup', function ( event ) {
			if (
				event.keyCode === 27 &&
				$( document.body ).hasClass( 'side-nav-open' )
			) {
				toggleNav();
			}
		} );

/**
		 * ScrollFix
		 *
		 * https://github.com/joelambert/ScrollFix
		 */
		$( '.side-nav__scrollable-container' ).on( 'touchstart', function () {
			const startTopScroll = this.scrollTop;

if ( startTopScroll <= 0 ) {
				this.scrollTop = 1;
			}

if ( startTopScroll + this.offsetHeight >= this.scrollHeight ) {
				this.scrollTop = this.scrollHeight - this.offsetHeight - 1;
			}
		} );
	};

$.fn.sbSearch = function () {
		/* allow closing sidenav with escape key */
		$document.on( 'keyup', function ( event ) {
			if (
				event.keyCode === 27 &&
				$( '#sb-search' ).hasClass( 'sb-search-open' )
			) {
				$( '#sb-search' ).removeClass( 'sb-search-open' );
			}
		} );

return this.each( function () {
			new UISearch( this );
		} );
	};

$.fn.keepFocusInSearchModal = function () {
		$document.on( 'keydown', function ( event ) {
			let modal,
				selectors,
				elements,
				activeEl,
				lastEl,
				firstEl,
				tabKey,
				shiftKey;

if ( $( '#sb-search' ).hasClass( 'sb-search-open' ) ) {
				selectors = 'input, a, button';
				modal = $document.find( '#sb-search' );

elements = modal.find( selectors );
				elements = Array.prototype.slice.call( elements );

lastEl = elements[ elements.length - 1 ];
				firstEl = elements[ 0 ];
				// eslint-disable-next-line @wordpress/no-global-active-element
				activeEl = document.activeElement;
				tabKey = event.keyCode === 9;
				shiftKey = event.shiftKey;

if ( ! shiftKey && tabKey && lastEl === activeEl ) {
					event.preventDefault();
					firstEl.focus();
				}

if ( shiftKey && tabKey && firstEl === activeEl ) {
					event.preventDefault();
					lastEl.focus();
				}
			}
		} );
	};

$.fn.keepFocusInMobileSidebar = function () {
		$document.on( 'keydown', function ( event ) {
			let sidebar,
				selectors,
				elements,
				activeEl,
				lastEl,
				firstEl,
				tabKey,
				shiftKey;

if ( $( document.body ).hasClass( 'side-nav-open' ) ) {
				selectors = 'input, a, button';
				sidebar = $document.find( 'aside#side-nav' );

elements = sidebar.find( selectors );
				elements = Array.prototype.slice.call( elements );

if ( ! shiftKey && tabKey && lastEl === activeEl ) {
					event.preventDefault();
					firstEl.focus();
				}

if ( shiftKey && tabKey && firstEl === activeEl ) {
					event.preventDefault();
					lastEl.focus();
				}
			}
		} );
	};

$( function () {
		$.fn.sideNav();

/**
		 * Search form in header.
		 */
		$( '#sb-search' ).sbSearch();
		$.fn.keepFocusInSearchModal();

/**
		 * Activate superfish menu.
		 */
		$( '.sf-menu' ).superfish( {
			speed: 'fast',
			animation: {
				height: 'show',
			},
			animationOut: {
				height: 'hide',
			},
		} );

// TODO: check if option is enanled
		if ( true ) {
			// $.fn.TopMenuMargin();

/**
			 * Activate Headroom.
			 */
			$( '.site-header' ).headroom( {
				tolerance: {
					up: 0,
					down: 0,
				},
				offset: 70,
			} );
		}

$( '.side-nav .navbar-nav li.menu-item-has-children > a .svg-icon' ).on(
			'click',
			function ( e ) {
				e.preventDefault();

const $li = $( this ).closest( 'li' ),
					$sub = $li.find( '> ul' );

if ( $sub.is( ':visible' ) ) {
					$sub.slideUp();
					$li.removeClass( 'open' );
				} else {
					$sub.slideDown();
					$li.addClass( 'open' );
				}
			}
		);
	} );
} )( jQuery );