/*
 * Copyright 2012-2018, Theia Post Slider, WeCodePixels, https://wecodepixels.com
 */
var tps = tps || {};
tps.slideshowsOnPage = 0;
tps.createSlideshowDefaults = {
    slideContainer: '',
    nav: [],
    navText: '%{currentSlide} of %{totalSlides}',
    helperText: '',
    defaultSlide: 0,
    transitionEffect: 'none',
    transitionSpeed: 400,
    keyboardShortcuts: false,
    scrollAfterRefresh: true,
    numberOfSlides: 0, // Total number of slides, including the ones not loaded.
    slides: [],
    useSlideSources: false,
    themeType: 'classic',
    prevPost: null,
    nextPost: null,
    prevText: null,
    nextText: null,
    buttonWidth: 0,
    prevText_post: null,
    nextText_post: null,
    buttonWidth_post: 0,
    onShowPost: null,
    postUrl: null,
    postId: null,
    refreshAds: false,
    refreshAdsEveryNSlides: 1,
    adRefreshingMechanism: 'javascript',
    ajaxUrl: '/',
    loopSlides: false,
    scrollTopOffset: 0,
    isRtl: false,
    excludedWords: []
};
tps.createSlideshow = function (options) {
    var i, j;
    var me = this;
    var $ = jQuery;

    // Merge options with defaults and sanitize values.
    me.options = $.extend(tps.createSlideshowDefaults, options);
    for (i in me.options) {
        // If the default is a number and the option is a string, then convert it to a number if possible.
        if (!isNaN(tps.createSlideshowDefaults[i]) && (typeof me.options[i] == 'string')) {
            var value = parseFloat(me.options[i]);
            if (!isNaN(value)) {
                me.options[i] = value;
            }
        }
    }

    me.slides = [];
    me.slideContainer = $(me.options.slideContainer);
    if (me.slideContainer.length == 0) {
        return null;
    }

    tps.slideshowsOnPage++;
    me.navEl = [];
    for (i = 0; i < me.options.nav.length; i++) {
        var e = $(me.options.nav[i]).get();
        for (j = 0; j < e.length; j++) {
            me.navEl.push({
                container: $(e[j])
            });
        }
    }

    // Initialize variables.
    me.currentPostId = me.options.postId;
    me.isLoading = false;
    me.slidesSinceLastAdRefresh = 0;

    // Remote loading queue.
    me.remoteLoadingQueue = async.queue(function (task, callback) {
        callback();
    }, 1);

    // The current slide.
    me.currentSlide = null;

    // The slide that is currently displayed. This may lag behind "me.currentSlide" because of the animations.
    me.currentlyDisplayedSlide = null;

    // The number of animations that are currently running.
    me.animations = 0;

    // A queue that is executed when no animation is running.
    me.semaphore = 0;
    me.asyncQueue = async.queue(function (task, callback) {
        callback();
    }, 1);

    me.incrementSemaphore = function () {
        me.asyncQueue.pause();
        me.semaphore++;
    };

    me.decrementSemaphore = function () {
        me.semaphore--;
        if (me.semaphore == 0) {
            me.asyncQueue.resume();
        }
    };

    // Initialization function
    me.init = function () {
        var i;

        // Load scroll position, if available.
        me.loadScrollTop();

        // Get slides from me.options.slides
        for (i in me.options.slides) {
            if ('content' in me.options.slides[i]) {
                if (me.options.useSlideSources) {
                    me.options.slides[i].source = me.options.slides[i].content;
                }

                me.options.slides[i].content = $('<div>').html(me.options.slides[i].content);
            }

            me.slides[i] = me.options.slides[i];
        }
        me.options.slides = null;

        // Get slides from HTML. The first slide is considered the default one, while the rest are detached.
        me.slideContainer.children('.theiaPostSlider_preloadedSlide').each(function (index, slide) {
            index = me.options.defaultSlide + index;
            slide = $(slide);
            me.slides[index] = me.slides[index] || {};
            me.slides[index].title = document.title;
            me.slides[index].permalink = document.location.href;
            me.slides[index].content = slide;

            if (index != me.options.defaultSlide) {
                slide.detach();
            }
        });

        // Count the slides.
        me.numberOfSlides = me.options.numberOfSlides;

        // Setup the navigation bars.
        for (i = 0; i < me.navEl.length; i++) {
            var navEl = me.navEl[i];
            navEl.text = navEl.container.find('._text');
            navEl.prev = navEl.container.find('._prev')
                .click(function (me) {
                    return function (event) {
                        me.onNavClick(this, 'prev', event);
                    }
                }(me));
            navEl.next = navEl.container.find('._next')
                .click(function (me) {
                    return function (event) {
                        me.onNavClick(this, 'next', event);
                    }
                }(me));

            navEl.title = navEl.container.find('._title');

            // Get the default slide's title. The title will be the same for all navigation bars, so get it only from the first.
            if (i === 0) {
                me.slides[me.options.defaultSlide].shortCodeTitle = navEl.title.html();
            }

            /*
             Add _active class on mousedown. This is a fix for IE and Opera which don't match :active on container elements.
             Also, return false to prevent double click context menu in Opera.
             */
            navEl.container.find('._prev, ._next')
                .mousedown(function () {
                    $(this).addClass('_active');
                })
                .mouseup(function () {
                    $(this).removeClass('_active');
                });
        }

        // Skip loading the slide if we're not going to display another one anyway.
        if (me.numberOfSlides == 1 || (me.options.refreshAds && me.options.adRefreshingMechanism == 'page' && me.options.refreshAdsEveryNSlides <= 1)) {
            me.currentSlide = me.options.defaultSlide;
        }
        else {
            // Show the first slide
            me.setSlide(me.options.defaultSlide);

            // Add history handler.
            var history = window.History;
            if (history.enabled) {
                history.Adapter.bind(window, 'statechange', function (me) {
                    return function () {
                        var state = History.getState();
                        if (state.data.currentPostId != undefined) {
                            if (state.data.currentSlide != undefined) {
                                me.setSlide(state.data.currentSlide);
                            }
                            else {
                                me.setSlide(me.options.defaultSlide);
                            }
                        }
                    };
                }(me));
            }
        }

        // Set up touch events.
        if (typeof Hammer !== 'undefined') {
            me.previousTouch = 0;
            me.minimumTimeBetweenGestures = 500;

            // Eanble text selection.
            delete Hammer.defaults.cssProps.userSelect;

            // Create hammer.js instance.
            var hammertime = new Hammer(me.slideContainer[0], {
                inputClass: Hammer.TouchInput
            });

            hammertime
                .on('swipeleft', function () {
                    var t = (new Date).getTime();
                    if (t - me.minimumTimeBetweenGestures >= me.previousTouch) {
                        me.setNext();
                        me.previousTouch = t;
                    }
                })
                .on('swiperight', function () {
                    var t = (new Date).getTime();
                    if (t - me.minimumTimeBetweenGestures >= me.previousTouch) {
                        me.setPrev();
                        me.previousTouch = t;
                    }
                });
        }

        // Enable keyboard shortcuts
        if (me.options.keyboardShortcuts) {
            $(document).keydown(function (me) {
                return function (e) {
                    // Disable shortcut if there is more than one slideshow on the page.
                    if (tps.slideshowsOnPage > 1) {
                        return true;
                    }

                    // Disable shortcut if the target element is editable (input boxes, textareas, etc.).
                    if (
                        this !== e.target &&
                        (
                            /textarea|select/i.test(e.target.nodeName) ||
                            e.target.type === "text" ||
                            (
                                $(e.target).prop &&
                                $(e.target).prop('contenteditable') == 'true'
                            )
                        )
                    ) {
                        return true;
                    }

                    switch (e.which) {
                        case 37:
                            me.navEl[0].prev[0].click();
                            return false;

                        case 39:
                            me.navEl[0].next[0].click();
                            return false;
                    }

                    return true;
                };
            }(me));
        }
    };

    // Load slides remotely
    me.loadSlides = function (slides, callback) {
        me.remoteLoadingQueue.push({name: ''}, function (me, slides, callback) {
            return function (err) {
                // Check if the slides are already loaded.
                var allSlidesAreLoaded = true;
                for (var i in slides) {
                    if (!(slides[i] in me.slides) || !('content' in me.slides[slides[i]])) {
                        allSlidesAreLoaded = false;
                        break;
                    }
                }
                if (allSlidesAreLoaded) {
                    if (callback) {
                        callback();
                    }
                    return;
                }

                // Load the slides and don't load anything else in the meantime.
                me.remoteLoadingQueue.concurrency = 0;
                $.ajax({
                    method: 'POST',
                    dataType: 'json',
                    data: {
                        action: 'tps_get_slides',
                        postId: me.currentPostId,
                        slides: slides
                    },
                    url: me.options.ajaxUrl,
                    success: function (me) {
                        return function (data) {
                            if (!data) {
                                return;
                            }
                            if (data.postId == me.currentPostId) {
                                // Add each slide.
                                for (var i in data.slides) {
                                    if (!(i in me.slides)) {
                                        me.slides[i] = {};
                                    }

                                    // Add content.
                                    if ('content' in data.slides[i]) {
                                        if (me.options.useSlideSources) {
                                            data.slides[i].source = data.slides[i].content;
                                        }

                                        data.slides[i].content = $('<div>').html(data.slides[i].content);
                                    }

                                    // Overwrite old data with new data.
                                    for (var j in data.slides[i]) {
                                        me.slides[i][j] = data.slides[i][j];
                                    }
                                }
                            }
                            else {
                                console.error('Received AJAX results for a different post ID.');
                            }
                        };
                    }(me),
                    complete: function (me, callback) {
                        return function () {
                            if (callback) {
                                callback();
                            }
                            me.remoteLoadingQueue.concurrency = 1;
                            me.remoteLoadingQueue.push({});
                        };
                    }(me, callback)
                });
            };
        }(me, slides, callback));
    };

    // Set the current slide.
    me.setSlide = function (index, isCallback) {
        if (me.isLoading == true && isCallback != true) {
            return;
        }

        // Is the slide already displayed?
        if (me.currentSlide == index) {
            return;
        }

        // Do we need to refresh the ads by refreshing the entire page?
        if (me.needToRefreshPage() && index in me.slides) {
            me.saveScrollTop();
            window.location = me.slides[index].permalink;

            return;
        }

        // Fire events.
        $(document).trigger('theiaPostSlider.willChangeSlide', [index]);

        // Is the slide not yet loaded?
        if (!me.isSlideLoaded(index)) {
            if (!isCallback) {
                me.showLoading();
                me.loadSlides([index], function (me, index) {
                    return function () {
                        me.hideLoading();
                        me.setSlide(index, true);
                    }
                }(me, index));

                return;
            }
            else {
                // The slide could not be loaded via AJAX. Abort.
                console.error("The slide could not be loaded via AJAX.");
                return;
            }
        }

        //
        var slideContent = me.slides[index].source;
        if (slideContent) {
            for (i = 0; i < me.options.excludedWords.length; i++) {
                var word = me.options.excludedWords[i];

                // Check if word is actually a string.
                if (typeof word !== 'string') {
                    continue;
                }

                // Trim string.
                word = word.trim();

                // Length must be at least one.
                if (word.length == 0) {
                    continue;
                }

                // Search for string and redirect if necessary.
                if (slideContent.indexOf(word) !== -1) {
                    me.showLoading();
                    window.location = me.slides[index].permalink;

                    return;
                }
            }
        }

        var previousSlide = me.currentSlide;
        me.currentSlide = index;

        if (previousSlide != null) {
            var i;

            // Scroll the window up, if the beginning of the slide is out-of-view.
            // Get the lowest offset.top
            var scrollTop = me.slideContainer.offset().top;
            for (i = 0; i < me.navEl.length; i++) {
                scrollTop = Math.min(scrollTop, me.navEl[i].container.offset().top);
            }
            scrollTop += me.options.scrollTopOffset;
            scrollTop = Math.max(0, scrollTop);
            if ($(window).scrollTop() > scrollTop) {
                $('body,html').animate({scrollTop: scrollTop});
            }

            // Remove number class.
            for (i = 0; i < me.navEl.length; i++) {
                var navEl = me.navEl[i];
                navEl.container.removeClass('_slide_number_' + previousSlide);
            }
        }

        // Set the title text.
        me.updateTitleText();

        // Change URL, but only if this isn't the first slide set (i.e. the default slide).
        var history = window.History;
        if (history.enabled) {
            var url = me.slides[me.currentSlide].permalink;

            // Replace protocol and domain (e.g. using CloudFlare's HTTPS from an HTTP source).
            var a = document.createElement('a');
            a.href = url;
            url = window.location.protocol + '//' + window.location.host + a.pathname + a.search + a.hash;

            if (url && previousSlide !== null) {
                var f;
                if (url == window.location) {
                    f = history.replaceState;
                }
                else {
                    f = history.pushState;
                }
                f({
                    currentSlide: index,
                    currentPostId: me.currentPostId
                }, me.slides[me.currentSlide].title, url);
            }
        }

        // Show the slide.
        me.asyncQueue.push({name: ''}, me.showSlide);

        // Set the navigation bars.
        me.updateNavigationBars();

        // Preload, but only if we don't have to refresh the page immediately after.
        if (
            !(
                me.options.refreshAds &&
                me.slidesSinceLastAdRefresh + 1 >= me.options.refreshAdsEveryNSlides &&
                me.options.adRefreshingMechanism == 'page'
            )
        ) {
            // Direction is either +1 if the user is browsing forward (i.e. using the "next" button), or -1 otherwise.
            var direction;
            if (previousSlide == null) {
                direction = 1;
            }
            else if (me.currentSlide == 0 && previousSlide == me.numberOfSlides - 1) {
                direction = 1;
            }
            else if (me.currentSlide == me.numberOfSlides - 1 && previousSlide == 0) {
                direction = -1;
            }
            else {
                direction = me.currentSlide - previousSlide;
                direction = Math.max(Math.min(direction, 1), -1);
            }

            var slideToPreload = me.currentSlide + direction;

            // If the loop-slides settings is activated, also preload the first/last slide when applicable.
            if (slideToPreload == -1 && me.options.loopSlides) {
                slideToPreload = me.numberOfSlides - 1;
            }
            else if (slideToPreload == me.numberOfSlides && me.options.loopSlides) {
                slideToPreload = 0;
            }

            if (
                slideToPreload >= 0 &&
                slideToPreload < me.numberOfSlides && !me.isSlideLoaded((slideToPreload))
            ) {
                me.loadSlides([slideToPreload]);
            }

        }
    };

    // Show (display) the current slide using the chosen animation.
    me.showSlide = function () {
        // Don't do anything if the current slide is already shown.
        if (me.currentlyDisplayedSlide == me.currentSlide) {
            return;
        }

        // Track the pageview if this isn't the first slide displayed.
        if (me.currentlyDisplayedSlide != null && me.slides[me.currentSlide]['permalink']) {
            // URL Path
            var path = me.slides[me.currentSlide]['permalink'].split('/');
            if (path.length >= 4) {
                path = '/' + path.slice(3).join('/');

                // Global Site Tag (gtag.js)
                // See: https://developers.google.com/analytics/devguides/collection/gtagjs/migration
                if (typeof gtag !== 'undefined') {
                    // Search for UA tag.
                    var tag = '';
                    for (var i = 0; i < window.dataLayer.length; i++) {
                        if (window.dataLayer[i].length >= 1 && window.dataLayer[i][0] === 'config') {
                            tag = window.dataLayer[i][1];
                            break;
                        }
                    }
                    gtag('config', tag, {
                        'page_path': path
                    });
                }
                // Google Analytics (ga.js, deprecated, but preferred if available)
                // If using both old and new versions, the new version sometimes does not work.
                // See http://stackoverflow.com/questions/18696998/ga-or-gaq-push-for-google-analytics-event-tracking
                else if (typeof _gaq !== 'undefined' && typeof _gaq.push !== 'undefined') {
                    _gaq.push(['_trackPageview', path]);
                }
                // Google Analytics by Yoast, which renames the "ga" variable.
                else if (typeof __gaTracker !== 'undefined') {
                    __gaTracker('set', 'page', path);
                    __gaTracker('send', 'pageview', path);
                }
                // Google Analytics (Analytics.js).
                else if (typeof ga !== 'undefined') {
                    ga('set', 'page', path);
                    ga('send', 'pageview', path);
                }
                // Google Analytics Traditional.
                else if (typeof pageTracker !== 'undefined' && typeof pageTracker._trackPageview !== 'undefined') {
                    pageTracker._trackPageview(path);
                }

                // Piwik
                if (typeof piwikTracker !== 'undefined' && typeof piwikTracker.trackPageView !== 'undefined') {
                    piwikTracker.trackPageView(path);
                }

                // StatCounter
                if (typeof sc_project !== 'undefined' && typeof sc_security !== 'undefined') {
                    var img = new Image();
                    img.src = '//c.statcounter.com/' + sc_project + '/0/' + sc_security + '/1/';
                }

                // Quantcast
                if (typeof _qacct !== 'undefined') {
                    var img = new Image();
                    img.src = '//pixel.quantserve.com/pixel/' + _qacct + '.gif';
                }
            }
        }

        var previousIndex = me.currentlyDisplayedSlide;
        me.currentlyDisplayedSlide = me.currentSlide;

        me.createSlideContentFromSource(me.slides[me.currentSlide]);

        // Change the slide while applying a certain effect/animation.
        var animationsQueue = tps.transitions[me.options.transitionEffect](me, previousIndex, me.currentlyDisplayedSlide);

        // Execute all "attachAnimation" methods before starting any animation.
        // Otherwise, we might get a race condition when one animation finishes before others are started,
        // thus triggering unwanted events before all animations have ended.
        for (var i = 0; i < animationsQueue.length; i++) {
            me.incrementSemaphore();
        }

        // This will be called after all animations finish, before any other items in the queue.
        if (previousIndex !== null) {
            me.asyncQueue.unshift({name: ''}, function (me, previousIndex) {
                return function () {
                    me.onRemovedSlide(previousIndex);
                }
            }(me, previousIndex));
        }

        // Start all animations.
        for (var i = 0; i < animationsQueue.length; i++) {
            animationsQueue[i]();
        }
    };

    me.createSlideContentFromSource = function (slide) {
        if (!('content' in slide) && ('source' in slide)) {
            slide.content = $('<div>').html(slide.source);

            if (false == me.options.useSlideSources) {
                delete slide.source;
            }
        }
    };

    me.isSlideLoaded = function (index) {
        if (!(index in me.slides)) {
            return false;
        }

        // Only if this isn't the first slide.
        if (me.currentlyDisplayedSlide !== null && me.options.useSlideSources && !('source' in me.slides[index])) {
            return false;
        }

        if (!(('content' in me.slides[index]) || ('source' in me.slides[index]))) {
            return false;
        }

        return true;
    };

    // Function that is called right after a new slide has been added to the DOM, and right before the animation (if available) has started.
    me.onNewSlide = function () {
        // "BJ Lazy Load" plugin.
        $(".lazy-hidden").not(".data-lazy-ready").one("scrollin.bj_lazy_load", {
            distance: 200
        }, function () {
            var b = $(this),
                d = b.attr("data-lazy-type");
            if (d == "image") {
                b.hide().attr("src", b.attr("data-lazy-src")).removeClass("lazy-hidden").fadeIn()
            } else if (d == "iframe") {
                b.replaceWith(c(b.attr("data-lazy-src")))
            }
        }).addClass("data-lazy-ready");

        // "Lazy Load" plugin.
        var events = $('body').data('events');
        if (events && events['post-load']) {
            for (var i = 0; i < events['post-load'].length; i++) {
                if (events['post-load'][i].handler.name == 'lazy_load_init') {
                    events['post-load'][i].handler();
                }
            }
        }

        // WordPress [audio] and [video] shortcodes.
        if (typeof _wpmejsSettings !== 'undefined') {
            $('.wp-audio-shortcode, .wp-video-shortcode').mediaelementplayer(_wpmejsSettings);
        }

        // Instagram embeds.
        if (typeof instgrm !== 'undefined' && typeof instgrm.Embeds !== 'undefined' && typeof instgrm.Embeds.process !== 'undefined') {
            instgrm.Embeds.process();
        }

        // Fire events.
        $(document).trigger('theiaPostSlider.changeSlide', [me.currentSlide]);
    };

    // Function that is called right after a slide has been removed from the DOM.
    me.onRemovedSlide = function (slideId) {
        if (me.options.useSlideSources) {
            me.slides[slideId].content.remove();
            delete me.slides[slideId].content;
        }

        // Refresh ads using JavaScript.
        if (me.options.refreshAds) {
            me.slidesSinceLastAdRefresh++;

            if (me.slidesSinceLastAdRefresh >= me.options.refreshAdsEveryNSlides) {
                me.slidesSinceLastAdRefresh = 0;

                if (me.options.adRefreshingMechanism == 'javascript') {
                    var p = null;

                    if (typeof pubService === 'undefined') {
                        if (typeof googletag !== 'undefined' && typeof googletag.pubads === 'function') {
                            p = googletag.pubads();
                        }
                    }
                    else {
                        p = pubService;
                    }

                    if (p && typeof p.refresh === 'function') {
                        p.refresh();
                    }

                    $(document).trigger('theiaPostSlider.refreshAds');
                }
            }
        }
    };

    // Update the title text.
    me.updateTitleText = function () {
        var shortCodeTitle = me.slides[me.currentSlide].shortCodeTitle;
        if (!shortCodeTitle) {
            shortCodeTitle = '<span class="_helper">' + me.options['helperText'] + '</span>';
        }
        for (i = 0; i < me.navEl.length; i++) {
            me.navEl[i].title.html(shortCodeTitle);
        }
    };

    // Update the navigation bar's text and buttons.
    me.updateNavigationBars = function () {
        for (var i = 0; i < me.navEl.length; i++) {
            var navEl = me.navEl[i];
            var navText;
            if (me.numberOfSlides == 1) {
                navText = '';
            }
            else {
                navText = me.options.navText;
                navText = navText.replace('%{currentSlide}', me.currentSlide + 1);
                navText = navText.replace('%{totalSlides}', me.numberOfSlides);
            }
            navEl.text.html(navText);

            // Set number class.
            navEl.container.addClass('_slide_number_' + me.currentSlide);

            // Set first and last classes.
            navEl.container.removeClass('_first_slide _last_slide _middle_slide');
            if (me.currentSlide === 0) {
                navEl.container.addClass('_first_slide');
            }
            else if (me.currentSlide === me.numberOfSlides - 1) {
                navEl.container.addClass('_last_slide');
            }
            else {
                navEl.container.addClass('_middle_slide');
            }

            // Update buttons.
            me.updateNavigationBarButton(navEl, false);
            me.updateNavigationBarButton(navEl, true);
        }
    };

    // Update a button from a navigation bar.
    me.updateNavigationBarButton = function (navEl, direction) {
        var width,
            html1 = '',
            html2 = '',
            html3 = '',
            href,
            directionName = direction ? 'next' : 'prev',
            buttonEl = navEl[directionName];

        if (me.options.themeType == 'font') {
            width = 0;
            html2 = me.options[directionName + 'FontIcon'];

            if (direction == false) {
                if (me.options.prevText_post) {
                    if (me.currentSlide == 0) {
                        html3 = me.options.prevText_post;
                    } else {
                        html3 = me.options.prevText;
                    }
                } else {
                    html3 = me.options.prevText;
                }
            } else {
                if (me.options.nextText_post) {
                    if (me.currentSlide == me.numberOfSlides - 1) {
                        html1 = me.options.nextText_post;
                    } else {
                        html1 = me.options.nextText;
                    }
                } else {
                    html1 = me.options.nextText;
                }
            }
        } else {
            width = me.options.buttonWidth;

            if (
                (direction == false && me.options.prevPost && me.currentSlide == 0) ||
                (direction == true && me.options.nextPost && me.currentSlide == me.numberOfSlides - 1)
            ) {
                html2 = me.options[directionName + 'Text_post'];
                href = direction ? me.options.nextPost : me.options.prevPost;
            }
            else {
                html2 = me.options[directionName + 'Text'];
            }
        }

        // Set link.
        {
            var jumpToSlide = null;
            if (direction == false && me.options.loopSlides && me.currentSlide == 0) {
                jumpToSlide = me.numberOfSlides - 1;
            }
            else if (direction == true && me.options.loopSlides && me.currentSlide == me.numberOfSlides - 1) {
                jumpToSlide = 0;
            }
            else if (
                (direction == false && me.options.prevPost && me.currentSlide == 0) ||
                (direction == true && me.options.nextPost && me.currentSlide == me.numberOfSlides - 1)
            ) {
                buttonEl.addClass('_another_post');
                href = direction ? me.options.nextPost : me.options.prevPost;
            } else {
                buttonEl.removeClass('_another_post');
                jumpToSlide = me.currentSlide + (direction ? 1 : -1);
            }

            if (jumpToSlide !== null) {
                if (me.needToRefreshPage()) {
                    var slide = me.slides[jumpToSlide];
                    if (slide) {
                        href = slide.permalink;
                    }
                }
                else {
                    href = '#';
                }
            }
        }

        buttonEl.find('._1').html(html1);
        buttonEl.find('._2')
            .css('width', width > 0 ? width : '')
            .html(html2);
        buttonEl.find('._3').html(html3);

        // Disable or enable
        if (
            (direction == false && me.options.prevPost == null && !me.options.loopSlides && me.currentSlide == 0) ||
            (direction == true && me.options.nextPost == null && !me.options.loopSlides && me.currentSlide == me.numberOfSlides - 1)
        ) {
            buttonEl.addClass('_disabled');
            href = '#';
        }
        else {
            buttonEl.removeClass('_disabled');
        }

        buttonEl.attr('href', href);
    };

    // Handler for previous and next buttons.
    me.onNavClick = function (that, direction, event) {
        var $that = $(that);

        if (typeof $that.attr('href') === 'undefined') {
            return;
        }

        // Jump to another page.
        // Some 3rd party plugins misbehave and turn the '#' into '', namely https://github.com/medialize/URI.js with "Blackout Image Gallery".
        if ($that.attr('href') != '#' && $that.attr('href') != '') {
            me.showLoading();
            me.saveScrollTop();
            return;
        }

        if (direction == 'prev') {
            me.setPrev();
        } else {
            me.setNext();
        }

        $that.focus();
        if (event) {
            event.preventDefault();
        }
    };

    me.isHtml5StorageAvailable = function () {
        try {
            return 'localStorage' in window && window['localStorage'] !== null;
        } catch (e) {
            return false;
        }
    };

    me.saveScrollTop = function () {
        if (!me.options.scrollAfterRefresh) {
            return;
        }

        if (!me.isHtml5StorageAvailable) {
            return;
        }

        localStorage.setItem('scrollTop', JSON.stringify({
            postId: me.postId,
            scrollTop: $(window).scrollTop()
        }));
    };

    me.loadScrollTop = function () {
        if (!me.options.scrollAfterRefresh) {
            return;
        }

        if (!me.isHtml5StorageAvailable) {
            return;
        }

        var data = JSON.parse(localStorage.getItem('scrollTop'));
        if (data && data.postId == me.postId) {
            var scrollTop = Math.min(data.scrollTop, me.slideContainer.offset().top);
            $(window).scrollTop(scrollTop);
        }

        localStorage.removeItem('scrollTop');
    };

    // Go to the previous slide.
    me.setPrev = function () {
        if (me.currentSlide == 0) {
            if (me.options.loopSlides) {
                me.setSlide(me.numberOfSlides - 1);
            }
            else if (me.options.prevPost) {
                me.showPost(me.options.prevPost);
            }
        }
        else {
            me.setSlide(me.currentSlide - 1);
        }
    };

    // Go to the next slide.
    me.setNext = function () {
        if (me.currentSlide == me.numberOfSlides - 1) {
            if (me.options.loopSlides) {
                me.setSlide(0);
            }
            else if (me.options.nextPost) {
                me.showPost(me.options.nextPost);
            }
        }
        else {
            me.setSlide(me.currentSlide + 1);
        }
    };

    // Go to another post. This method will be called when navigating using the keyboard shortcuts.
    me.showPost = function (postUrl) {
        document.location = postUrl;
    };

    // Set the transition properties (used in Live Preview).
    me.setTransition = function (options) {
        var defaults = {
            'effect': me.options.transitionEffect,
            'speed': me.options.transitionSpeed
        };
        options = $.extend(defaults, options);
        me.options.transitionEffect = options.effect;
        me.options.transitionSpeed = options.speed;
    };

    // Set the navigation bar's text template (used in Live Preview).
    me.setNavText = function (text) {
        me.options.navText = text;
        me.updateNavigationBars();
    };

    // Set the title for all slides (used in Live Preview).
    me.setTitleText = function (text) {
        for (i = 0; i < me.slides.length; i++) {
            me.slides[i].shortCodeTitle = '';
        }
        me.options.helperText = text;
        me.updateTitleText();
    };

    me.showLoading = function () {
        me.isLoading = true;
        for (i = 0; i < me.navEl.length; i++) {
            me.navEl[i].container
                .append($('<div class="_loading"></div>'))
                .find('._buttons > a').addClass('_disabled');
        }
    };

    me.hideLoading = function () {
        me.isLoading = false;
        for (i = 0; i < me.navEl.length; i++) {
            me.navEl[i].container.find('._loading').remove();
        }
        me.updateNavigationBars();
    };

    me.needToRefreshPage = function () {
        return (
            me.currentSlide !== null &&
            me.options.refreshAds &&
            me.slidesSinceLastAdRefresh + 1 >= me.options.refreshAdsEveryNSlides &&
            me.options.adRefreshingMechanism == 'page'
        );
    };

    // Initialize the slider.
    me.init();

    return me;
};