/**
 * Customify theme javaScript.
 *
 * @since 0.2.6
 *
 * Copyright 2017, PressMaximum
 */

'use strict'; // prevent global namespace pollution
(function (elmPrototype, docPrototype) {
    var scopeRegex = /:scope\b/gi;

    function patchElement(method) {
        var native = elmPrototype[method];

        elmPrototype[method] = function (selector) {
            var element = this;
            var id = element.id || 'qsid' + new Date().getTime();
            var needsId = !element.id;
            var hasScope = scopeRegex.test(selector);

            try {
                if (hasScope) {
                    if (needsId) {
                        element.id = id;
                    }

                    selector = selector.replace(scopeRegex, '#' + id);
                }

                return native.call(this, selector);
            } finally {
                if (needsId) {
                    element.id = null;
                }
            }
        };
    }

    function patchDocument(method) {
        var native = docPrototype[method];
        docPrototype[method] = function (selector) {
            // In context of document, :scope is the same
            // as :root so can just be stripped
            // https://www.w3.org/TR/selectors4/#scope-pseudo
            return native.call(this, selector.replace(scopeRegex, ''));
        };
    }

    try {
        document.querySelector(':scope');
    } catch (err) {
        patchElement('querySelector');
        patchElement('querySelectorAll');
        patchDocument('querySelector');
        patchDocument('querySelectorAll');
    }
})(Element.prototype, Document.prototype);

(function (arr) {
    arr.forEach(function (item) {
        if (item.hasOwnProperty('append')) {
            return;
        }
        Object.defineProperty(item, 'append', {
            configurable: true,
            enumerable: true,
            writable: true,
            value: function append() {
                var argArr = Array.prototype.slice.call(arguments),
                    docFrag = document.createDocumentFragment();

                argArr.forEach(function (argItem) {
                    var isNode = argItem instanceof Node;
                    docFrag.appendChild(isNode ? argItem : document.createTextNode(String(argItem)));
                });

                this.appendChild(docFrag);
            }
        });
    });
})([Element.prototype, Document.prototype, DocumentFragment.prototype]);
(function () {
    if (typeof NodeList.prototype.forEach === 'function') return false;
    NodeList.prototype.forEach = Array.prototype.forEach;
})();

/**
 * matches() pollyfil
 * @see https://developer.mozilla.org/en-US/docs/Web/API/Element/closest#Polyfill
 */
if (!Element.prototype.matches) {
    Element.prototype.matches = Element.prototype.msMatchesSelector || Element.prototype.webkitMatchesSelector;
}

/**
 * closest() pollyfil
 * @see https://developer.mozilla.org/en-US/docs/Web/API/Element/closest#Polyfill
 */
if (!Element.prototype.closest) {
    Element.prototype.closest = function (s) {
        var el = this;
        if (!document.documentElement.contains(el)) {
            return null;
        }
        do {
            if (el.matches(s)) {
                return el;
            }
            el = el.parentElement || el.parentNode;
        } while (el !== null && el.nodeType === 1);
        return null;
    };
}

/**
 * Main Customify Scripts
 */
(function () {
    var Customify = function () {
        this.options = {
            menuToggleDuration: 300
        };

        this.menuSidebarState = 'closed';
        this.isPreviewing = document.body.classList.contains('customize-previewing');

        this.init();
    };

    /**
     * Add body class to check touch screen.
     */
    Customify.prototype.checkTouchScreen = function () {
        if ('ontouchstart' in document.documentElement) {
            document.body.classList.add('ontouch-screen');
        } else {
            document.body.classList.add('not-touch-screen');
        }
    };

    /**
     * Check if current mobile viewing.
     *
     * @return bool
     */
    Customify.prototype.isMobile = function () {
        if (
            navigator.userAgent.match(/Android/i) ||
            navigator.userAgent.match(/webOS/i) ||
            navigator.userAgent.match(/iPhone/i) ||
            navigator.userAgent.match(/iPad/i) ||
            navigator.userAgent.match(/iPod/i) ||
            navigator.userAgent.match(/BlackBerry/i) ||
            navigator.userAgent.match(/Windows Phone/i)
        ) {
            return true;
        } else {
            return false;
        }
    };

    /**
     * Init mobile sidebar.
     *
     * @todo Move menu sidebar to body.
     * @todo Add events to menu buttons.
     */
    Customify.prototype.initMenuSidebar = function () {
        var themeMenuSidebar;
        const that = this;
        if (document.body.classList.contains('menu_sidebar_dropdown')) {
            // $( '#header-menu-sidebar' ).insertAfter( "#masthead" );
        } else {
            themeMenuSidebar = document.getElementById('header-menu-sidebar');
            if (themeMenuSidebar) {
                document.body.append(themeMenuSidebar);
            }
        }

        document.addEventListener(
            'customize_section_opened',
            function (e) {
                if (e.detail === 'header_sidebar') {
                    this.toggleMenuSidebar(false);
                }
            }.bind(this)
        );

        var menuMobileToggleButtons = document.querySelectorAll('.menu-mobile-toggle');
        /**
         * When click to toggle buttons.
         */
        this.addEvent(
            menuMobileToggleButtons,
            'click',
            function (e) {
                e.preventDefault();
                this.toggleMenuSidebar();
            }.bind(this)
        );



        var closeButtons = document.querySelectorAll('#header-menu-sidebar .close-panel, .close-sidebar-panel');

        /**
         * When click close buttons.
         */
        this.addEvent(
            closeButtons,
            'click',
            function (e) {
                e.preventDefault();
                this.closeMenuSidebar();
            }.bind(this)
        );

        /**
         * When click to ouside of menu sidebar.
         */
        this.addEvent(
            document,
            'click',
            function (e) {
                if (document.body.classList.contains('is-menu-sidebar')) {
                    var menuSidebar = document.getElementById('header-menu-sidebar');
                    var buttons = document.querySelectorAll('.menu-mobile-toggle');
                    var outside = false;

                    var isClickInside = menuSidebar.contains(e.target);
                    if (!isClickInside) {
                        outside = true;
                    }

                    // If the click happened inside the the container, bail
                    if (!e.target.closest('#header-menu-sidebar') && e.target !== menuSidebar) {
                        // Outside menu sidebar.
                        outside = true;
                    }

                    // Check if not click to menu toggle buttons.
                    var onButton = false;
                    if (buttons.length) {
                        for (var i = 0; i < buttons.length; i++) {
                            // If click on toggle button.
                            if (e.target.closest('.menu-mobile-toggle') || e.target === buttons[i]) {
                                onButton = true;
                            }
                        }
                    }

                    if (outside && !onButton) {
                        this.closeMenuSidebar();
                    }
                }
            }.bind(this)
        );

        this.addEvent(
            document,
            'keyup',
            function (e) {
                if (e.keyCode === 27) {
                    this.closeMenuSidebar();
                }
            }.bind(this)
        );


        /**
         * When click to anchor links.
         * @since 0.3.9
         */
        this.addEvent(
            document.querySelectorAll('.menu a[href*="#"]'),
            'click',
            function (e) {
                let el = e.target.tagName === 'A' ? e.target : e.target.closest('a');
                let url = new URL(el.href);
                if (url.origin + url.pathname === window.location.origin + window.location.pathname) {
                    let elTo = document.querySelector(url.hash);
                    if (elTo) {
                        e.preventDefault();
                        that.closeMenuSidebar();
                        window.scrollTo({
                            top: elTo.getBoundingClientRect().y,
                            left: 0,
                            behavior: 'smooth'
                        })
                        window.history.pushState({}, null, url.href);
                    }
                }
            }
        );
    };

    /**
     * Init mobile search form
     *
     * @todo Need check
     */
    Customify.prototype.initMobieSearchForm = function () {
        var mobileSearchForm = document.querySelector('.search-form--mobile');
        if (mobileSearchForm) {
            mobileSearchForm.classList.add('mobile-search-form-sidebar menu-sidebar-panel');
            mobileSearchForm.classList.remove('hide-on-mobile hide-on-tablet');
            document.body.prepend(mobileSearchForm);
        }
    };

    Customify.prototype.toggleMobileSubmenu = function (e) {
        e.preventDefault();
        var that = this;
        var li = e.target.closest('li');
        var firstSubmenu = li.querySelectorAll(':scope  > .sub-menu, .sub-lv-0');

        if (!li.classList.contains('open-sub')) {
            // Show the sub menu.
            li.classList.add('open-sub');
            if (firstSubmenu.length) {
                for (var i = 0; i < firstSubmenu.length; i++) {
                    that.slideDown(firstSubmenu[i], this.options.menuToggleDuration, function () {
                        li.classList.add('open-sub');
                    });
                }
            }
        } else {
            // Hide the sub menu.
            if (firstSubmenu.length) {
                for (var i = 0; i < firstSubmenu.length; i++) {
                    that.slideUp(firstSubmenu[i], this.options.menuToggleDuration, function () {
                        li.classList.remove('open-sub');
                    });
                }
            }
        }
    };

    /**
     * Add events listener for mobile toggle button.
     *
     * @param Element toggleIcon
     */
    Customify.prototype.toggleMobileSubmenuEvents = function (toggleIcon) {
        toggleIcon.addEventListener('click', this.toggleMobileSubmenu.bind(this));
    };

    /**
     * Inital mobile submenu.
     */
    Customify.prototype.initMobileSubMenu = function () {
        var menuChildren = document.querySelectorAll('#header-menu-sidebar .nav-menu-mobile .menu-item-has-children');

        if (menuChildren.length) {
            for (var i = 0; i < menuChildren.length; i++) {
                var child = menuChildren[i];

                if (!child.classList.contains('toggle--added')) {
                    child.classList.add('toggle--added');

                    var fistLink = child.querySelector(':scope > a');
                    var d = fistLink.cloneNode(true);

                    if (this.isPreviewing) {
                    }

                    var toggleButton = document.createElement('span');
                    toggleButton.classList.add('nav-toggle-icon');
                    toggleButton.innerHTML = '<i class="nav-icon-angle"></i>';

                    fistLink.parentNode.insertBefore(toggleButton, fistLink);
                    var submenu = child.querySelector(':scope > .sub-menu');
                    if ('1' !== Customify_JS.sidebar_menu_no_duplicator) {
                        submenu.prepend(d);
                    }
                    var firstSubmenu = child.querySelectorAll(':scope  > .sub-menu, .sub-lv-0');
                    if (firstSubmenu.length) {
                        for (var j = 0; j < firstSubmenu.length; j++) {
                            this.slideUp(firstSubmenu[j], 0);
                        }
                    }
                    if ('1' !== Customify_JS.sidebar_menu_no_duplicator) {
                        var dWrapper = document.createElement('li');
                        d.parentNode.prepend(dWrapper);
                        dWrapper.appendChild(d);
                    }
                    this.toggleMobileSubmenuEvents(toggleButton);
                }
            }
        }
    };

    /**
     * SideUp
     *
     * @param Element element
     * @param number duration
     * @param function callBack
     */
    Customify.prototype.slideUp = function (element, duration, callBack) {
        if (typeof duration !== 'number') {
            duration = 0;
        }

        // if ( element._sideUpTimeOut ) {
        // 	clearTimeout( element._sideUpTimeOut );
        // 	element._sideUpTimeOut = false;
        // }

        if (element._slideDownTimeOut) {
            clearTimeout(element._slideDownTimeOut);
            element._slideDownTimeOut = false;
        }

        // Get orignal height.
        var offset = element.getBoundingClientRect();
        // Back to default.
        element.style.overflow = 'hidden';
        element.style.height = offset.height + 'px';
        element.style.transition = 'height ' + duration + 'ms linear';
        setTimeout(function () {
            element.style.height = '0px';
        }, 20);

        element._sideUpTimeOut = setTimeout(function () {
            element.style.transition = '';
            if (typeof callBack === 'function') {
                callBack.call(this);
            }
        }, duration + 20);
    };

    /**
     *
     * @param Element element
     * @param number duration
     * @param function callBack
     */
    Customify.prototype.slideDown = function (element, duration, callBack) {
        if (typeof duration !== 'number') {
            duration = 0;
        }

        if (element._sideUpTimeOut) {
            clearTimeout(element._sideUpTimeOut);
            element._sideUpTimeOut = false;
        }

        // if ( element._slideDownTimeOut ) {
        // 	clearTimeout( element._slideDownTimeOut );
        // 	element._slideDownTimeOut = false;
        // }

        // Reset element styling to get orignal height.
        element.style.height = 'initial';
        element.style.overflow = 'initial';
        element.style.transition = '';
        // Get orignal height.
        var offset = element.getBoundingClientRect();
        // Back to default.
        element.style.height = '0px';
        element.style.overflow = 'hidden';
        element.style.transition = 'height ' + duration + 'ms linear';
        setTimeout(function () {
            element.style.height = offset.height + 'px';
        }, 50);

        element._sideUpTimeOut = setTimeout(function () {
            element.style.height = '';
            element.style.overflow = '';
            element.style.transition = '';
            if (typeof callBack === 'function') {
                callBack.call(this);
            }
        }, duration);
    };

    Customify.prototype.insertMenuOverlayClass = function () {
        var navMobile = document.querySelector('.nav-menu-mobile');
        if (navMobile) {
            if (document.body.classList.contains('menu_sidebar_slide_overlay')) {
                navMobile.classList.add('nav-menu-overlay');
            } else {
                navMobile.classList.remove('nav-menu-overlay');
            }
        }
    };

    Customify.prototype.setupMobileItemAnimations = function (element) {
        var h = window.height;
        if (typeof element === 'undefined') {
            element = document.getElementById('header-menu-sidebar');
        }

        var t = 0.2;
        var index = 0;
        var itemsInner = element.querySelectorAll('.item--inner');
        if (itemsInner.length) {
            for (var i = 0; i < itemsInner.length; i++) {
                index++;
                itemsInner[i].style.transitionDelay = index * t + 's';
            }
        }
    };

    /**
     * Toogle Element class name.
     *
     * @param Element element
     * @param string className
     */
    Customify.prototype.toggleClass = function (element, className) {
        if (element instanceof NodeList) {
            for (var i = 0; i < element.length; i++) {
                if (element[i].classList.contains(className)) {
                    element[i].classList.remove(className);
                } else {
                    element[i].classList.add(className);
                }
            }
        } else if (element instanceof Node || element instanceof Element) {
            if (element.classList.contains(className)) {
                element.classList.remove(className);
            } else {
                element.classList.add(className);
            }
        }
    };

    /**
     * Add class to element.
     *
     * @param Element element
     * @param string className
     */
    Customify.prototype.addClass = function (element, className) {
        if (element instanceof NodeList) {
            for (var i = 0; i < element.length; i++) {
                element[i].classList.add(className);
            }
        } else if (element instanceof Node || element instanceof Element) {
            element.classList.add(className);
        }
    };

    /**
     * Remove class name from element.
     *
     * @param Element element
     * @param string className
     */
    Customify.prototype.removeClass = function (element, className) {
        // Split each class by space.
        var classes = className.split(' ');
        if (element instanceof NodeList) {
            for (var i = 0; i < element.length; i++) {
                for (var j = 0; j < classes.length; j++) {
                    element[i].classList.remove(classes[j]);
                }
            }
        } else if (element instanceof Node || element instanceof Element) {
            for (var j = 0; j < classes.length; j++) {
                element.classList.remove(classes[j]);
            }
        }
    };

    /**
     * Add event handle to elements.
     *
     * @param Element element
     * @param string event
     * @param function callBack
     */
    Customify.prototype.addEvent = function (element, event, callBack) {
        if (element instanceof NodeList) {
            for (var i = 0; i < element.length; i++) {
                element[i].addEventListener(event, callBack);
            }
        } else if (element instanceof Node || element instanceof Element) {
            element.addEventListener(event, callBack);
        }
    };

    /**
     * Close menu sidebar.
     */
    Customify.prototype.closeMenuSidebar = function () {
        document.body.classList.add('hiding-header-menu-sidebar');
        document.body.classList.remove('is-menu-sidebar');
        var toggleButtons = document.querySelectorAll('.menu-mobile-toggle, .menu-mobile-toggle .hamburger');
        this.removeClass(toggleButtons, 'is-active');

        /**
         * For dropdown sidebar.
         */
        if (document.body.classList.contains('menu_sidebar_dropdown')) {
            this.removeClass(document.body, 'hiding-header-menu-sidebar');
            var menuSidebar = document.getElementById('header-menu-sidebar');
            var menuSidebarInner = document.getElementById('header-menu-sidebar-inner');
            var offset = menuSidebarInner.getBoundingClientRect();
            var h = offset.height;

            this.slideUp(
                menuSidebar,
                300,
                function () {
                    menuSidebar.style.height = 0;
                    menuSidebar.style.display = 'block';
                }.bind(this)
            );
        } else {
            // Else slide sidebar.
            setTimeout(
                function () {
                    this.removeClass(document.body, 'hiding-header-menu-sidebar');
                }.bind(this),
                1000
            );
        }
    };

    /**
     * Toggle menu sidebar.
     *
     * @param bool open use animation or not.
     */
    Customify.prototype.toggleMenuSidebar = function (toggle) {
        if (typeof toggle === 'undefined') {
            toggle = true;
        }

        document.body.classList.remove('hiding-header-menu-sidebar');

        if (!toggle) {
            document.body.classList.add('is-menu-sidebar');
        } else {
            this.toggleClass(document.body, 'is-menu-sidebar');
        }

        if (document.body.classList.contains('menu_sidebar_dropdown')) {
            var buttons = document.querySelectorAll('.menu-mobile-toggle, .menu-mobile-toggle .hamburger');
            if (toggle) {
                this.toggleClass(buttons, 'is-active');
            } else {
                this.addClass(buttons, 'is-active');
            }

            if (document.body.classList.contains('is-menu-sidebar')) {
                var menuSidebar = document.getElementById('header-menu-sidebar');
                var menuSidebarInner = document.getElementById('header-menu-sidebar-inner');
                var offset = menuSidebarInner.getBoundingClientRect();
                var h = offset.height;

                this.slideDown(menuSidebar, 300, function () {
                    menuSidebar.style.height = h + 'px';
                });
            } else {
                if (toggle) {
                    this.closeMenuSidebar();
                }
            }
        }
    };

    /**
     * Auto align search form.
     */
    Customify.prototype.searchFormAutoAlign = function () {
        var searchItems = document.querySelectorAll('.header-search_icon-item');
        var w = window.innerWidth;

        for (var i = 0; i < searchItems.length; i++) {
            var container = searchItems[i];
            var button = container.querySelector('.search-icon');
            var buttonOffset = button.getBoundingClientRect();
            this.removeClass(container, 'search-right search-left');
            if (buttonOffset.left > w / 2) {
                if (Customify_JS.is_rtl) {
                    this.removeClass(container, 'search-left');
                    this.addClass(container, 'search-right');
                } else {
                    this.removeClass(container, 'search-right');
                    this.addClass(container, 'search-left');
                }
            } else {
                if (Customify_JS.is_rtl) {
                    this.removeClass(container, 'search-right');
                    this.addClass(container, 'search-left');
                } else {
                    this.removeClass(container, 'search-left');
                    this.addClass(container, 'search-right');
                }
            }
        }
    };

    /**
     * Search form.
     */
    Customify.prototype.initSearchForm = function () {
        var searchItems = document.querySelectorAll('.header-search_icon-item');
        var that = this;
        searchItems.forEach(function (container) {
            if (!container.classList.contains('js-added')) {
                that.addClass(container, 'js-added');
                that.removeClass(container, 'active');
                var icon = container.querySelector('.search-icon');

                var iconSearchClick = function (e) {
                    e.preventDefault();
                    var inputField = container.querySelector('.search-field');
                    if (!container.classList.contains('active')) {
                        container.classList.add('active');
                        inputField.blur();
                    } else {
                        this.removeClass(container, 'active');
                        inputField.focus();
                    }
                };

                var clickOutSideSearchIcon = function (e) {
                    // if the target of the click isn't the container nor a descendant of the container
                    if (!(container === e.target) && !container.contains(e.target)) {
                        that.removeClass(container, 'active');
                    }
                };

                icon.removeEventListener('click', iconSearchClick);
                //document.removeEventListener("click", clickOutSideSearchIcon);
                /**
                 * Add event handle when click to icon.
                 */
                that.addEvent(icon, 'click', iconSearchClick.bind(that));

                /**
                 * When click outside search form.
                 */
                that.addEvent(document, 'click', clickOutSideSearchIcon.bind(that));
            }
        });

        that.searchFormAutoAlign();
    };

    /**
     * Wrapper element
     *
     * @param Element element
     * @param strig tag Tag name.
     *
     * @return Element
     */
    Customify.prototype.wrapper = function (element, tag) {
        if (typeof tag === 'undefined') {
            tag = 'div';
        }
        var wrapper = document.createElement(tag);
        element.parentNode.replaceChild(wrapper, element);
        wrapper.appendChild(element);
        return wrapper;
    };

    /**
     * Responsive table.
     */
    Customify.prototype.responsiveTable = function () {
        var tables = document.querySelectorAll('.entry-content table');
        for (var i = 0; i < tables.length; i++) {
            if (!tables[i].parentNode.classList.contains('table-wrapper')) {
                // Wrap table by each div.table-wrapper
                var dWrapper = document.createElement('div');
                dWrapper.classList.add('table-wrapper');
                tables[i].parentNode.replaceChild(dWrapper, tables[i]);
                dWrapper.appendChild(tables[i]);
            }
        }
    };

    /**
     * Reponsive video style.
     */
    Customify.prototype.responsiveVideos = function () { };

    /**
     * Inittial
     */
    Customify.prototype.init = function () {
        this.checkTouchScreen();
        this.initMobieSearchForm();
        this.initMobileSubMenu();
        this.insertMenuOverlayClass();
        this.setupMobileItemAnimations();
        this.initMenuSidebar();
        this.initSearchForm();
        this.responsiveTable();
        this.responsiveVideos();

        /**
         * Add action when Header Panel rendered by customizer.
         */
        document.addEventListener(
            'header_builder_panel_changed',
            function () {
                this.initMobileSubMenu();
                this.insertMenuOverlayClass();
            }.bind(this)
        );
        // Add actions when window resize.
        var tf;
        window.addEventListener(
            'resize',
            function () {
                // Resetup mobile animations
                this.setupMobileItemAnimations();

                // Resetup search form alignmenet.
                this.removeClass(document.querySelectorAll('.header-search_icon-item'), 'active');
                if (tf) {
                    clearTimeout(tf);
                }
                tf = setTimeout(this.searchFormAutoAlign.bind(this), 100);
            }.bind(this)
        );

        document.addEventListener(
            'selective-refresh-content-rendered',
            function (e) {
                console.log('e.detail', e.detail);

                if ('customify_customize_render_header' === e.detail) {
                    var oldMenu = document.querySelector('body > .header-menu-sidebar');
                    if (null !== oldMenu) {
                        oldMenu.remove();
                    }
                    this.initMobieSearchForm();
                    this.initMobileSubMenu();
                    this.insertMenuOverlayClass();
                    this.setupMobileItemAnimations();
                    this.initMenuSidebar();
                    this.initSearchForm();
                    console.log('header_change');
                }

                if ('Customify_Builder_Item_Search_Icon__render' === e.detail) {
                    this.initMobieSearchForm();
                    this.initSearchForm();
                    this.setupMobileItemAnimations();
                }
            }.bind(this)
        );
    };

    /**
     * Check is mobile.
     * This may use in plugins.
     *
     * @deprecated 0.2.6
     */
    function customify_is_mobile() {
        return Customify.isMobile();
    }

    window.customify_is_mobile = customify_is_mobile;
    window.Customify = new Customify();

    /**
     * Fix viewport units on Mobile.
     */
    (function () {
        if (window.Customify.isMobile()) {
            /**
             * https://css-tricks.com/the-trick-to-viewport-units-on-mobile/
             */
            // First we get the viewport height and we multiple it by 1% to get a value for a vh unit
            var vh = window.innerHeight * 0.01;
            var vw = window.innerWidth * 0.01;
            // Then we set the value in the --vh, --vw custom property to the root of the document
            document.documentElement.style.setProperty('--vh', vh + 'px');
            document.documentElement.style.setProperty('--vw', vw + 'px');

            window.addEventListener('resize', function () {
                var vh = window.innerHeight * 0.01;
                var vw = window.innerWidth * 0.01;
                document.documentElement.style.setProperty('--vh', vh + 'px');
                document.documentElement.style.setProperty('--vw', vw + 'px');
            });
        }
    })();
})();

/**
 *
 * Handles toggling the navigation menu for small screens and enables TAB key
 * navigation support for dropdown menus.
 */
(function () {
    var container, button, menu, links, i, len;

    container = document.getElementById('site-navigation-main-desktop');
    if (!container) {
        return;
    }

    menu = container.getElementsByTagName('ul')[0];
    // Hide menu toggle button if menu is empty and return early.
    if ('undefined' === typeof menu) {
        return;
    }

    menu.setAttribute('aria-expanded', 'false');
    if (-1 === menu.className.indexOf('nav-menu')) {
        menu.className += ' nav-menu';
    }

    // Get all the link elements within the menu.
    links = menu.getElementsByTagName('a');

    // Each time a menu link is focused or blurred, toggle focus.
    for (i = 0, len = links.length; i < len; i++) {
        links[i].addEventListener('focus', toggleFocus, true);
        links[i].addEventListener('blur', toggleFocus, true);
    }

    /**
     * Sets or removes .focus class on an element.
     */
    function toggleFocus() {
        var self = this;

        // Move up through the ancestors of the current link until we hit .nav-menu.
        while (-1 === self.className.indexOf('nav-menu')) {
            // On li elements toggle the class .focus.
            if ('li' === self.tagName.toLowerCase()) {
                if (-1 !== self.className.indexOf('focus')) {
                    self.className = self.className.replace(' focus', '');
                } else {
                    self.className += ' focus';
                }
            }

            self = self.parentElement;
        }
    }

    /**
     * Toggles `focus` class to allow submenu access on tablets.
     */
    (function (container) {
        var touchStartFn,
            i,
            parentLink = container.querySelectorAll('.menu-item-has-children > a, .page_item_has_children > a');

        if ('ontouchstart' in window) {
            touchStartFn = function (e) {
                var menuItem = this.parentNode,
                    i;

                if (!menuItem.classList.contains('focus')) {
                    e.preventDefault();
                    for (i = 0; i < menuItem.parentNode.children.length; ++i) {
                        if (menuItem === menuItem.parentNode.children[i]) {
                            continue;
                        }
                        menuItem.parentNode.children[i].classList.remove('focus');
                    }
                    menuItem.classList.add('focus');
                } else {
                    menuItem.classList.remove('focus');
                }
            };

            for (i = 0; i < parentLink.length; ++i) {
                parentLink[i].addEventListener('touchstart', touchStartFn, false);
            }
        }
    })(container);
})();

/**
 *
 * 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
        );
    }
})();
