lightgallery/lib/lightgallery.js

"use strict";
var __assign = (this && this.__assign) || function () {
    __assign = Object.assign || function(t) {
        for (var s, i = 1, n = arguments.length; i < n; i++) {
            s = arguments[i];
            for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p))
                t[p] = s[p];
        }
        return t;
    };
    return __assign.apply(this, arguments);
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.LightGallery = void 0;
var lg_events_1 = require("./lg-events");
var lg_settings_1 = require("./lg-settings");
var lg_utils_1 = require("./lg-utils");
var lgQuery_1 = require("./lgQuery");
// @ref - https://stackoverflow.com/questions/3971841/how-to-resize-images-proportionally-keeping-the-aspect-ratio
// @ref - https://2ality.com/2017/04/setting-up-multi-platform-packages.html
// Unique id for each gallery
var lgId = 0;
var LightGallery = /** @class */ (function () {
    function LightGallery(element, options) {
        this.lgOpened = false;
        this.index = 0;
        // lightGallery modules
        this.plugins = [];
        // false when lightGallery load first slide content;
        this.lGalleryOn = false;
        // True when a slide animation is in progress
        this.lgBusy = false;
        this.currentItemsInDom = [];
        // Scroll top value before lightGallery is opened
        this.prevScrollTop = 0;
        this.bodyPaddingRight = 0;
        this.isDummyImageRemoved = false;
        this.dragOrSwipeEnabled = false;
        this.mediaContainerPosition = {
            top: 0,
            bottom: 0,
        };
        if (!element) {
            return this;
        }
        lgId++;
        this.lgId = lgId;
        this.el = element;
        this.LGel = lgQuery_1.$LG(element);
        this.generateSettings(options);
        this.buildModules();
        // When using dynamic mode, ensure dynamicEl is an array
        if (this.settings.dynamic &&
            this.settings.dynamicEl !== undefined &&
            !Array.isArray(this.settings.dynamicEl)) {
            throw 'When using dynamic mode, you must also define dynamicEl as an Array.';
        }
        this.galleryItems = this.getItems();
        this.normalizeSettings();
        // Gallery items
        this.init();
        this.validateLicense();
        return this;
    }
    LightGallery.prototype.generateSettings = function (options) {
        // lightGallery settings
        this.settings = __assign(__assign({}, lg_settings_1.lightGalleryCoreSettings), options);
        if (this.settings.isMobile &&
            typeof this.settings.isMobile === 'function'
            ? this.settings.isMobile()
            : lg_utils_1.default.isMobile()) {
            var mobileSettings = __assign(__assign({}, this.settings.mobileSettings), this.settings.mobileSettings);
            this.settings = __assign(__assign({}, this.settings), mobileSettings);
        }
    };
    LightGallery.prototype.normalizeSettings = function () {
        if (this.settings.slideEndAnimation) {
            this.settings.hideControlOnEnd = false;
        }
        if (!this.settings.closable) {
            this.settings.swipeToClose = false;
        }
        // And reset it on close to get the correct value next time
        this.zoomFromOrigin = this.settings.zoomFromOrigin;
        // At the moment, Zoom from image doesn't support dynamic options
        // @todo add zoomFromOrigin support for dynamic images
        if (this.settings.dynamic) {
            this.zoomFromOrigin = false;
        }
        if (!this.settings.container) {
            this.settings.container = document.body;
        }
        // settings.preload should not be grater than $item.length
        this.settings.preload = Math.min(this.settings.preload, this.galleryItems.length);
    };
    LightGallery.prototype.init = function () {
        var _this = this;
        this.addSlideVideoInfo(this.galleryItems);
        this.buildStructure();
        this.LGel.trigger(lg_events_1.lGEvents.init, {
            instance: this,
        });
        if (this.settings.keyPress) {
            this.keyPress();
        }
        setTimeout(function () {
            _this.enableDrag();
            _this.enableSwipe();
            _this.triggerPosterClick();
        }, 50);
        this.arrow();
        if (this.settings.mousewheel) {
            this.mousewheel();
        }
        if (!this.settings.dynamic) {
            this.openGalleryOnItemClick();
        }
    };
    LightGallery.prototype.openGalleryOnItemClick = function () {
        var _this = this;
        var _loop_1 = function (index) {
            var element = this_1.items[index];
            var $element = lgQuery_1.$LG(element);
            // Using different namespace for click because click event should not unbind if selector is same object('this')
            // @todo manage all event listners - should have namespace that represent element
            var uuid = lgQuery_1.lgQuery.generateUUID();
            $element
                .attr('data-lg-id', uuid)
                .on("click.lgcustom-item-" + uuid, function (e) {
                e.preventDefault();
                var currentItemIndex = _this.settings.index || index;
                _this.openGallery(currentItemIndex, element);
            });
        };
        var this_1 = this;
        // Using for loop instead of using bubbling as the items can be any html element.
        for (var index = 0; index < this.items.length; index++) {
            _loop_1(index);
        }
    };
    /**
     * Module constructor
     * Modules are build incrementally.
     * Gallery should be opened only once all the modules are initialized.
     * use moduleBuildTimeout to make sure this
     */
    LightGallery.prototype.buildModules = function () {
        var _this = this;
        this.settings.plugins.forEach(function (plugin) {
            _this.plugins.push(new plugin(_this, lgQuery_1.$LG));
        });
    };
    LightGallery.prototype.validateLicense = function () {
        if (!this.settings.licenseKey) {
            console.error('Please provide a valid license key');
        }
        else if (this.settings.licenseKey === '0000-0000-000-0000') {
            console.warn("lightGallery: " + this.settings.licenseKey + " license key is not valid for production use");
        }
    };
    LightGallery.prototype.getSlideItem = function (index) {
        return lgQuery_1.$LG(this.getSlideItemId(index));
    };
    LightGallery.prototype.getSlideItemId = function (index) {
        return "#lg-item-" + this.lgId + "-" + index;
    };
    LightGallery.prototype.getIdName = function (id) {
        return id + "-" + this.lgId;
    };
    LightGallery.prototype.getElementById = function (id) {
        return lgQuery_1.$LG("#" + this.getIdName(id));
    };
    LightGallery.prototype.manageSingleSlideClassName = function () {
        if (this.galleryItems.length < 2) {
            this.outer.addClass('lg-single-item');
        }
        else {
            this.outer.removeClass('lg-single-item');
        }
    };
    LightGallery.prototype.buildStructure = function () {
        var _this = this;
        var container = this.$container && this.$container.get();
        if (container) {
            return;
        }
        var controls = '';
        var subHtmlCont = '';
        // Create controls
        if (this.settings.controls) {
            controls = "<button type=\"button\" id=\"" + this.getIdName('lg-prev') + "\" aria-label=\"" + this.settings.strings['previousSlide'] + "\" class=\"lg-prev lg-icon\"> " + this.settings.prevHtml + " </button>\n                <button type=\"button\" id=\"" + this.getIdName('lg-next') + "\" aria-label=\"" + this.settings.strings['nextSlide'] + "\" class=\"lg-next lg-icon\"> " + this.settings.nextHtml + " </button>";
        }
        if (this.settings.appendSubHtmlTo !== '.lg-item') {
            subHtmlCont =
                '<div class="lg-sub-html" role="status" aria-live="polite"></div>';
        }
        var addClasses = '';
        if (this.settings.allowMediaOverlap) {
            // Do not remove space before last single quote
            addClasses += 'lg-media-overlap ';
        }
        var ariaLabelledby = this.settings.ariaLabelledby
            ? 'aria-labelledby="' + this.settings.ariaLabelledby + '"'
            : '';
        var ariaDescribedby = this.settings.ariaDescribedby
            ? 'aria-describedby="' + this.settings.ariaDescribedby + '"'
            : '';
        var containerClassName = "lg-container " + this.settings.addClass + " " + (document.body !== this.settings.container ? 'lg-inline' : '');
        var closeIcon = this.settings.closable && this.settings.showCloseIcon
            ? "<button type=\"button\" aria-label=\"" + this.settings.strings['closeGallery'] + "\" id=\"" + this.getIdName('lg-close') + "\" class=\"lg-close lg-icon\"></button>"
            : '';
        var maximizeIcon = this.settings.showMaximizeIcon
            ? "<button type=\"button\" aria-label=\"" + this.settings.strings['toggleMaximize'] + "\" id=\"" + this.getIdName('lg-maximize') + "\" class=\"lg-maximize lg-icon\"></button>"
            : '';
        var template = "\n        <div class=\"" + containerClassName + "\" id=\"" + this.getIdName('lg-container') + "\" tabindex=\"-1\" aria-modal=\"true\" " + ariaLabelledby + " " + ariaDescribedby + " role=\"dialog\"\n        >\n            <div id=\"" + this.getIdName('lg-backdrop') + "\" class=\"lg-backdrop\"></div>\n\n            <div id=\"" + this.getIdName('lg-outer') + "\" class=\"lg-outer lg-use-css3 lg-css3 lg-hide-items " + addClasses + " \">\n\n              <div id=\"" + this.getIdName('lg-content') + "\" class=\"lg-content\">\n                <div id=\"" + this.getIdName('lg-inner') + "\" class=\"lg-inner\">\n                </div>\n                " + controls + "\n              </div>\n                <div id=\"" + this.getIdName('lg-toolbar') + "\" class=\"lg-toolbar lg-group\">\n                    " + maximizeIcon + "\n                    " + closeIcon + "\n                    </div>\n                    " + (this.settings.appendSubHtmlTo === '.lg-outer'
            ? subHtmlCont
            : '') + "\n                <div id=\"" + this.getIdName('lg-components') + "\" class=\"lg-components\">\n                    " + (this.settings.appendSubHtmlTo === '.lg-sub-html'
            ? subHtmlCont
            : '') + "\n                </div>\n            </div>\n        </div>\n        ";
        lgQuery_1.$LG(this.settings.container).append(template);
        if (document.body !== this.settings.container) {
            lgQuery_1.$LG(this.settings.container).css('position', 'relative');
        }
        this.outer = this.getElementById('lg-outer');
        this.$lgComponents = this.getElementById('lg-components');
        this.$backdrop = this.getElementById('lg-backdrop');
        this.$container = this.getElementById('lg-container');
        this.$inner = this.getElementById('lg-inner');
        this.$content = this.getElementById('lg-content');
        this.$toolbar = this.getElementById('lg-toolbar');
        this.$backdrop.css('transition-duration', this.settings.backdropDuration + 'ms');
        var outerClassNames = this.settings.mode + " ";
        this.manageSingleSlideClassName();
        if (this.settings.enableDrag) {
            outerClassNames += 'lg-grab ';
        }
        this.outer.addClass(outerClassNames);
        this.$inner.css('transition-timing-function', this.settings.easing);
        this.$inner.css('transition-duration', this.settings.speed + 'ms');
        if (this.settings.download) {
            this.$toolbar.append("<a id=\"" + this.getIdName('lg-download') + "\" target=\"_blank\" rel=\"noopener\" aria-label=\"" + this.settings.strings['download'] + "\" download class=\"lg-download lg-icon\"></a>");
        }
        this.counter();
        lgQuery_1.$LG(window).on("resize.lg.global" + this.lgId + " orientationchange.lg.global" + this.lgId, function () {
            _this.refreshOnResize();
        });
        this.hideBars();
        this.manageCloseGallery();
        this.toggleMaximize();
        this.initModules();
    };
    LightGallery.prototype.refreshOnResize = function () {
        if (this.lgOpened) {
            var currentGalleryItem = this.galleryItems[this.index];
            var __slideVideoInfo = currentGalleryItem.__slideVideoInfo;
            this.mediaContainerPosition = this.getMediaContainerPosition();
            var _a = this.mediaContainerPosition, top_1 = _a.top, bottom = _a.bottom;
            this.currentImageSize = lg_utils_1.default.getSize(this.items[this.index], this.outer, top_1 + bottom, __slideVideoInfo && this.settings.videoMaxSize);
            if (__slideVideoInfo) {
                this.resizeVideoSlide(this.index, this.currentImageSize);
            }
            if (this.zoomFromOrigin && !this.isDummyImageRemoved) {
                var imgStyle = this.getDummyImgStyles(this.currentImageSize);
                this.outer
                    .find('.lg-current .lg-dummy-img')
                    .first()
                    .attr('style', imgStyle);
            }
            this.LGel.trigger(lg_events_1.lGEvents.containerResize);
        }
    };
    LightGallery.prototype.resizeVideoSlide = function (index, imageSize) {
        var lgVideoStyle = this.getVideoContStyle(imageSize);
        var currentSlide = this.getSlideItem(index);
        currentSlide.find('.lg-video-cont').attr('style', lgVideoStyle);
    };
    /**
     * Update slides dynamically.
     * Add, edit or delete slides dynamically when lightGallery is opened.
     * Modify the current gallery items and pass it via updateSlides method
     * @note
     * - Do not mutate existing lightGallery items directly.
     * - Always pass new list of gallery items
     * - You need to take care of thumbnails outside the gallery if any
     * - user this method only if you want to update slides when the gallery is opened. Otherwise, use `refresh()` method.
     * @param items Gallery items
     * @param index After the update operation, which slide gallery should navigate to
     * @category lGPublicMethods
     * @example
     * const plugin = lightGallery();
     *
     * // Adding slides dynamically
     * let galleryItems = [
     * // Access existing lightGallery items
     * // galleryItems are automatically generated internally from the gallery HTML markup
     * // or directly from galleryItems when dynamic gallery is used
     *   ...plugin.galleryItems,
     *     ...[
     *       {
     *         src: 'img/img-1.png',
     *           thumb: 'img/thumb1.png',
     *         },
     *     ],
     *   ];
     *   plugin.updateSlides(
     *     galleryItems,
     *     plugin.index,
     *   );
     *
     *
     * // Remove slides dynamically
     * galleryItems = JSON.parse(
     *   JSON.stringify(updateSlideInstance.galleryItems),
     * );
     * galleryItems.shift();
     * updateSlideInstance.updateSlides(galleryItems, 1);
     * @see <a href="/demos/update-slides/">Demo</a>
     */
    LightGallery.prototype.updateSlides = function (items, index) {
        if (this.index > items.length - 1) {
            this.index = items.length - 1;
        }
        if (items.length === 1) {
            this.index = 0;
        }
        if (!items.length) {
            this.closeGallery();
            return;
        }
        var currentSrc = this.galleryItems[index].src;
        this.galleryItems = items;
        this.updateControls();
        this.$inner.empty();
        this.currentItemsInDom = [];
        var _index = 0;
        // Find the current index based on source value of the slide
        this.galleryItems.some(function (galleryItem, itemIndex) {
            if (galleryItem.src === currentSrc) {
                _index = itemIndex;
                return true;
            }
            return false;
        });
        this.currentItemsInDom = this.organizeSlideItems(_index, -1);
        this.loadContent(_index, true);
        this.getSlideItem(_index).addClass('lg-current');
        this.index = _index;
        this.updateCurrentCounter(_index);
        this.LGel.trigger(lg_events_1.lGEvents.updateSlides);
    };
    // Get gallery items based on multiple conditions
    LightGallery.prototype.getItems = function () {
        // Gallery items
        this.items = [];
        if (!this.settings.dynamic) {
            if (this.settings.selector === 'this') {
                this.items.push(this.el);
            }
            else if (this.settings.selector) {
                if (typeof this.settings.selector === 'string') {
                    if (this.settings.selectWithin) {
                        var selectWithin = lgQuery_1.$LG(this.settings.selectWithin);
                        this.items = selectWithin
                            .find(this.settings.selector)
                            .get();
                    }
                    else {
                        this.items = this.el.querySelectorAll(this.settings.selector);
                    }
                }
                else {
                    this.items = this.settings.selector;
                }
            }
            else {
                this.items = this.el.children;
            }
            return lg_utils_1.default.getDynamicOptions(this.items, this.settings.extraProps, this.settings.getCaptionFromTitleOrAlt, this.settings.exThumbImage);
        }
        else {
            return this.settings.dynamicEl || [];
        }
    };
    LightGallery.prototype.shouldHideScrollbar = function () {
        return (this.settings.hideScrollbar &&
            document.body === this.settings.container);
    };
    LightGallery.prototype.hideScrollbar = function () {
        if (!this.shouldHideScrollbar()) {
            return;
        }
        this.bodyPaddingRight = parseFloat(lgQuery_1.$LG('body').style().paddingRight);
        var bodyRect = document.documentElement.getBoundingClientRect();
        var scrollbarWidth = window.innerWidth - bodyRect.width;
        lgQuery_1.$LG(document.body).css('padding-right', scrollbarWidth + this.bodyPaddingRight + 'px');
        lgQuery_1.$LG(document.body).addClass('lg-overlay-open');
    };
    LightGallery.prototype.resetScrollBar = function () {
        if (!this.shouldHideScrollbar()) {
            return;
        }
        lgQuery_1.$LG(document.body).css('padding-right', this.bodyPaddingRight + 'px');
        lgQuery_1.$LG(document.body).removeClass('lg-overlay-open');
    };
    /**
     * Open lightGallery.
     * Open gallery with specific slide by passing index of the slide as parameter.
     * @category lGPublicMethods
     * @param {Number} index  - index of the slide
     * @param {HTMLElement} element - Which image lightGallery should zoom from
     *
     * @example
     * const $dynamicGallery = document.getElementById('dynamic-gallery-demo');
     * const dynamicGallery = lightGallery($dynamicGallery, {
     *     dynamic: true,
     *     dynamicEl: [
     *         {
     *              src: 'img/1.jpg',
     *              thumb: 'img/thumb-1.jpg',
     *              subHtml: '<h4>Image 1 title</h4><p>Image 1 descriptions.</p>',
     *         },
     *         ...
     *     ],
     * });
     * $dynamicGallery.addEventListener('click', function () {
     *     // Starts with third item.(Optional).
     *     // This is useful if you want use dynamic mode with
     *     // custom thumbnails (thumbnails outside gallery),
     *     dynamicGallery.openGallery(2);
     * });
     *
     */
    LightGallery.prototype.openGallery = function (index, element) {
        var _this = this;
        if (index === void 0) { index = this.settings.index; }
        // prevent accidental double execution
        if (this.lgOpened)
            return;
        this.lgOpened = true;
        this.outer.removeClass('lg-hide-items');
        this.hideScrollbar();
        // Add display block, but still has opacity 0
        this.$container.addClass('lg-show');
        var itemsToBeInsertedToDom = this.getItemsToBeInsertedToDom(index, index);
        this.currentItemsInDom = itemsToBeInsertedToDom;
        var items = '';
        itemsToBeInsertedToDom.forEach(function (item) {
            items = items + ("<div id=\"" + item + "\" class=\"lg-item\"></div>");
        });
        this.$inner.append(items);
        this.addHtml(index);
        var transform = '';
        this.mediaContainerPosition = this.getMediaContainerPosition();
        var _a = this.mediaContainerPosition, top = _a.top, bottom = _a.bottom;
        if (!this.settings.allowMediaOverlap) {
            this.setMediaContainerPosition(top, bottom);
        }
        var __slideVideoInfo = this.galleryItems[index].__slideVideoInfo;
        if (this.zoomFromOrigin && element) {
            this.currentImageSize = lg_utils_1.default.getSize(element, this.outer, top + bottom, __slideVideoInfo && this.settings.videoMaxSize);
            transform = lg_utils_1.default.getTransform(element, this.outer, top, bottom, this.currentImageSize);
        }
        if (!this.zoomFromOrigin || !transform) {
            this.outer.addClass(this.settings.startClass);
            this.getSlideItem(index).removeClass('lg-complete');
        }
        var timeout = this.settings.zoomFromOrigin
            ? 100
            : this.settings.backdropDuration;
        setTimeout(function () {
            _this.outer.addClass('lg-components-open');
        }, timeout);
        this.index = index;
        this.LGel.trigger(lg_events_1.lGEvents.beforeOpen);
        // add class lg-current to remove initial transition
        this.getSlideItem(index).addClass('lg-current');
        this.lGalleryOn = false;
        // Store the current scroll top value to scroll back after closing the gallery..
        this.prevScrollTop = lgQuery_1.$LG(window).scrollTop();
        setTimeout(function () {
            // Need to check both zoomFromOrigin and transform values as we need to set set the
            // default opening animation if user missed to add the lg-size attribute
            if (_this.zoomFromOrigin && transform) {
                var currentSlide_1 = _this.getSlideItem(index);
                currentSlide_1.css('transform', transform);
                setTimeout(function () {
                    currentSlide_1
                        .addClass('lg-start-progress lg-start-end-progress')
                        .css('transition-duration', _this.settings.startAnimationDuration + 'ms');
                    _this.outer.addClass('lg-zoom-from-image');
                });
                setTimeout(function () {
                    currentSlide_1.css('transform', 'translate3d(0, 0, 0)');
                }, 100);
            }
            setTimeout(function () {
                _this.$backdrop.addClass('in');
                _this.$container.addClass('lg-show-in');
            }, 10);
            setTimeout(function () {
                if (_this.settings.trapFocus &&
                    document.body === _this.settings.container) {
                    _this.trapFocus();
                }
            }, _this.settings.backdropDuration + 50);
            // lg-visible class resets gallery opacity to 1
            if (!_this.zoomFromOrigin || !transform) {
                setTimeout(function () {
                    _this.outer.addClass('lg-visible');
                }, _this.settings.backdropDuration);
            }
            // initiate slide function
            _this.slide(index, false, false, false);
            _this.LGel.trigger(lg_events_1.lGEvents.afterOpen);
        });
        if (document.body === this.settings.container) {
            lgQuery_1.$LG('html').addClass('lg-on');
        }
    };
    /**
     * Note - Changing the position of the media on every slide transition creates a flickering effect.
     * Therefore, The height of the caption is calculated dynamically, only once based on the first slide caption.
     * if you have dynamic captions for each media,
     * you can provide an appropriate height for the captions via allowMediaOverlap option
     */
    LightGallery.prototype.getMediaContainerPosition = function () {
        if (this.settings.allowMediaOverlap) {
            return {
                top: 0,
                bottom: 0,
            };
        }
        var top = this.$toolbar.get().clientHeight || 0;
        var subHtml = this.outer.find('.lg-components .lg-sub-html').get();
        var captionHeight = this.settings.defaultCaptionHeight ||
            (subHtml && subHtml.clientHeight) ||
            0;
        var thumbContainer = this.outer.find('.lg-thumb-outer').get();
        var thumbHeight = thumbContainer ? thumbContainer.clientHeight : 0;
        var bottom = thumbHeight + captionHeight;
        return {
            top: top,
            bottom: bottom,
        };
    };
    LightGallery.prototype.setMediaContainerPosition = function (top, bottom) {
        if (top === void 0) { top = 0; }
        if (bottom === void 0) { bottom = 0; }
        this.$content.css('top', top + 'px').css('bottom', bottom + 'px');
    };
    LightGallery.prototype.hideBars = function () {
        var _this = this;
        // Hide controllers if mouse doesn't move for some period
        setTimeout(function () {
            _this.outer.removeClass('lg-hide-items');
            if (_this.settings.hideBarsDelay > 0) {
                _this.outer.on('mousemove.lg click.lg touchstart.lg', function () {
                    _this.outer.removeClass('lg-hide-items');
                    clearTimeout(_this.hideBarTimeout);
                    // Timeout will be cleared on each slide movement also
                    _this.hideBarTimeout = setTimeout(function () {
                        _this.outer.addClass('lg-hide-items');
                    }, _this.settings.hideBarsDelay);
                });
                _this.outer.trigger('mousemove.lg');
            }
        }, this.settings.showBarsAfter);
    };
    LightGallery.prototype.initPictureFill = function ($img) {
        if (this.settings.supportLegacyBrowser) {
            try {
                picturefill({
                    elements: [$img.get()],
                });
            }
            catch (e) {
                console.warn('lightGallery :- If you want srcset or picture tag to be supported for older browser please include picturefil javascript library in your document.');
            }
        }
    };
    /**
     *  @desc Create image counter
     *  Ex: 1/10
     */
    LightGallery.prototype.counter = function () {
        if (this.settings.counter) {
            var counterHtml = "<div class=\"lg-counter\" role=\"status\" aria-live=\"polite\">\n                <span id=\"" + this.getIdName('lg-counter-current') + "\" class=\"lg-counter-current\">" + (this.index + 1) + " </span> /\n                <span id=\"" + this.getIdName('lg-counter-all') + "\" class=\"lg-counter-all\">" + this.galleryItems.length + " </span></div>";
            this.outer.find(this.settings.appendCounterTo).append(counterHtml);
        }
    };
    /**
     *  @desc add sub-html into the slide
     *  @param {Number} index - index of the slide
     */
    LightGallery.prototype.addHtml = function (index) {
        var subHtml;
        var subHtmlUrl;
        if (this.galleryItems[index].subHtmlUrl) {
            subHtmlUrl = this.galleryItems[index].subHtmlUrl;
        }
        else {
            subHtml = this.galleryItems[index].subHtml;
        }
        if (!subHtmlUrl) {
            if (subHtml) {
                // get first letter of sub-html
                // if first letter starts with . or # get the html form the jQuery object
                var fL = subHtml.substring(0, 1);
                if (fL === '.' || fL === '#') {
                    if (this.settings.subHtmlSelectorRelative &&
                        !this.settings.dynamic) {
                        subHtml = lgQuery_1.$LG(this.items)
                            .eq(index)
                            .find(subHtml)
                            .first()
                            .html();
                    }
                    else {
                        subHtml = lgQuery_1.$LG(subHtml).first().html();
                    }
                }
            }
            else {
                subHtml = '';
            }
        }
        if (this.settings.appendSubHtmlTo !== '.lg-item') {
            if (subHtmlUrl) {
                this.outer.find('.lg-sub-html').load(subHtmlUrl);
            }
            else {
                this.outer.find('.lg-sub-html').html(subHtml);
            }
        }
        else {
            var currentSlide = lgQuery_1.$LG(this.getSlideItemId(index));
            if (subHtmlUrl) {
                currentSlide.load(subHtmlUrl);
            }
            else {
                currentSlide.append("<div class=\"lg-sub-html\">" + subHtml + "</div>");
            }
        }
        // Add lg-empty-html class if title doesn't exist
        if (typeof subHtml !== 'undefined' && subHtml !== null) {
            if (subHtml === '') {
                this.outer
                    .find(this.settings.appendSubHtmlTo)
                    .addClass('lg-empty-html');
            }
            else {
                this.outer
                    .find(this.settings.appendSubHtmlTo)
                    .removeClass('lg-empty-html');
            }
        }
        this.LGel.trigger(lg_events_1.lGEvents.afterAppendSubHtml, {
            index: index,
        });
    };
    /**
     *  @desc Preload slides
     *  @param {Number} index - index of the slide
     * @todo preload not working for the first slide, Also, should work for the first and last slide as well
     */
    LightGallery.prototype.preload = function (index) {
        for (var i = 1; i <= this.settings.preload; i++) {
            if (i >= this.galleryItems.length - index) {
                break;
            }
            this.loadContent(index + i, false);
        }
        for (var j = 1; j <= this.settings.preload; j++) {
            if (index - j < 0) {
                break;
            }
            this.loadContent(index - j, false);
        }
    };
    LightGallery.prototype.getDummyImgStyles = function (imageSize) {
        if (!imageSize)
            return '';
        return "width:" + imageSize.width + "px;\n                margin-left: -" + imageSize.width / 2 + "px;\n                margin-top: -" + imageSize.height / 2 + "px;\n                height:" + imageSize.height + "px";
    };
    LightGallery.prototype.getVideoContStyle = function (imageSize) {
        if (!imageSize)
            return '';
        return "width:" + imageSize.width + "px;\n                height:" + imageSize.height + "px";
    };
    LightGallery.prototype.getDummyImageContent = function ($currentSlide, index, alt) {
        var $currentItem;
        if (!this.settings.dynamic) {
            $currentItem = lgQuery_1.$LG(this.items).eq(index);
        }
        if ($currentItem) {
            var _dummyImgSrc = void 0;
            if (!this.settings.exThumbImage) {
                _dummyImgSrc = $currentItem.find('img').first().attr('src');
            }
            else {
                _dummyImgSrc = $currentItem.attr(this.settings.exThumbImage);
            }
            if (!_dummyImgSrc)
                return '';
            var imgStyle = this.getDummyImgStyles(this.currentImageSize);
            var dummyImgContent = "<img " + alt + " style=\"" + imgStyle + "\" class=\"lg-dummy-img\" src=\"" + _dummyImgSrc + "\" />";
            $currentSlide.addClass('lg-first-slide');
            this.outer.addClass('lg-first-slide-loading');
            return dummyImgContent;
        }
        return '';
    };
    LightGallery.prototype.setImgMarkup = function (src, $currentSlide, index) {
        var currentGalleryItem = this.galleryItems[index];
        var alt = currentGalleryItem.alt, srcset = currentGalleryItem.srcset, sizes = currentGalleryItem.sizes, sources = currentGalleryItem.sources;
        // Use the thumbnail as dummy image which will be resized to actual image size and
        // displayed on top of actual image
        var imgContent = '';
        var altAttr = alt ? 'alt="' + alt + '"' : '';
        if (this.isFirstSlideWithZoomAnimation()) {
            imgContent = this.getDummyImageContent($currentSlide, index, altAttr);
        }
        else {
            imgContent = lg_utils_1.default.getImgMarkup(index, src, altAttr, srcset, sizes, sources);
        }
        var imgMarkup = "<picture class=\"lg-img-wrap\"> " + imgContent + "</picture>";
        $currentSlide.prepend(imgMarkup);
    };
    LightGallery.prototype.onSlideObjectLoad = function ($slide, isHTML5VideoWithoutPoster, onLoad, onError) {
        var mediaObject = $slide.find('.lg-object').first();
        if (lg_utils_1.default.isImageLoaded(mediaObject.get()) ||
            isHTML5VideoWithoutPoster) {
            onLoad();
        }
        else {
            mediaObject.on('load.lg error.lg', function () {
                onLoad && onLoad();
            });
            mediaObject.on('error.lg', function () {
                onError && onError();
            });
        }
    };
    /**
     *
     * @param $el Current slide item
     * @param index
     * @param delay Delay is 0 except first time
     * @param speed Speed is same as delay, except it is 0 if gallery is opened via hash plugin
     * @param isFirstSlide
     */
    LightGallery.prototype.onLgObjectLoad = function (currentSlide, index, delay, speed, isFirstSlide, isHTML5VideoWithoutPoster) {
        var _this = this;
        this.onSlideObjectLoad(currentSlide, isHTML5VideoWithoutPoster, function () {
            _this.triggerSlideItemLoad(currentSlide, index, delay, speed, isFirstSlide);
        }, function () {
            currentSlide.addClass('lg-complete lg-complete_');
            currentSlide.html('<span class="lg-error-msg">' +
                _this.settings.strings['mediaLoadingFailed'] +
                '</span>');
        });
    };
    LightGallery.prototype.triggerSlideItemLoad = function ($currentSlide, index, delay, speed, isFirstSlide) {
        var _this = this;
        var currentGalleryItem = this.galleryItems[index];
        // Adding delay for video slides without poster for better performance and user experience
        // Videos should start playing once once the gallery is completely loaded
        var _speed = isFirstSlide &&
            this.getSlideType(currentGalleryItem) === 'video' &&
            !currentGalleryItem.poster
            ? speed
            : 0;
        setTimeout(function () {
            $currentSlide.addClass('lg-complete lg-complete_');
            _this.LGel.trigger(lg_events_1.lGEvents.slideItemLoad, {
                index: index,
                delay: delay || 0,
                isFirstSlide: isFirstSlide,
            });
        }, _speed);
    };
    LightGallery.prototype.isFirstSlideWithZoomAnimation = function () {
        return !!(!this.lGalleryOn &&
            this.zoomFromOrigin &&
            this.currentImageSize);
    };
    // Add video slideInfo
    LightGallery.prototype.addSlideVideoInfo = function (items) {
        var _this = this;
        items.forEach(function (element, index) {
            element.__slideVideoInfo = lg_utils_1.default.isVideo(element.src, !!element.video, index);
            if (element.__slideVideoInfo &&
                _this.settings.loadYouTubePoster &&
                !element.poster &&
                element.__slideVideoInfo.youtube) {
                element.poster = "//img.youtube.com/vi/" + element.__slideVideoInfo.youtube[1] + "/maxresdefault.jpg";
            }
        });
    };
    /**
     *  Load slide content into slide.
     *  This is used to load content into slides that is not visible too
     *  @param {Number} index - index of the slide.
     *  @param {Boolean} rec - if true call loadcontent() function again.
     */
    LightGallery.prototype.loadContent = function (index, rec) {
        var _this = this;
        var currentGalleryItem = this.galleryItems[index];
        var $currentSlide = lgQuery_1.$LG(this.getSlideItemId(index));
        var poster = currentGalleryItem.poster, srcset = currentGalleryItem.srcset, sizes = currentGalleryItem.sizes, sources = currentGalleryItem.sources;
        var src = currentGalleryItem.src;
        var video = currentGalleryItem.video;
        var _html5Video = video && typeof video === 'string' ? JSON.parse(video) : video;
        if (currentGalleryItem.responsive) {
            var srcDyItms = currentGalleryItem.responsive.split(',');
            src = lg_utils_1.default.getResponsiveSrc(srcDyItms) || src;
        }
        var videoInfo = currentGalleryItem.__slideVideoInfo;
        var lgVideoStyle = '';
        var iframe = !!currentGalleryItem.iframe;
        var isFirstSlide = !this.lGalleryOn;
        // delay for adding complete class. it is 0 except first time.
        var delay = 0;
        if (isFirstSlide) {
            if (this.zoomFromOrigin && this.currentImageSize) {
                delay = this.settings.startAnimationDuration + 10;
            }
            else {
                delay = this.settings.backdropDuration + 10;
            }
        }
        if (!$currentSlide.hasClass('lg-loaded')) {
            if (videoInfo) {
                var _a = this.mediaContainerPosition, top_2 = _a.top, bottom = _a.bottom;
                var videoSize = lg_utils_1.default.getSize(this.items[index], this.outer, top_2 + bottom, videoInfo && this.settings.videoMaxSize);
                lgVideoStyle = this.getVideoContStyle(videoSize);
            }
            if (iframe) {
                var markup = lg_utils_1.default.getIframeMarkup(this.settings.iframeWidth, this.settings.iframeHeight, this.settings.iframeMaxWidth, this.settings.iframeMaxHeight, src, currentGalleryItem.iframeTitle);
                $currentSlide.prepend(markup);
            }
            else if (poster) {
                var dummyImg = '';
                var hasStartAnimation = isFirstSlide &&
                    this.zoomFromOrigin &&
                    this.currentImageSize;
                if (hasStartAnimation) {
                    dummyImg = this.getDummyImageContent($currentSlide, index, '');
                }
                var markup = lg_utils_1.default.getVideoPosterMarkup(poster, dummyImg || '', lgVideoStyle, this.settings.strings['playVideo'], videoInfo);
                $currentSlide.prepend(markup);
            }
            else if (videoInfo) {
                var markup = "<div class=\"lg-video-cont \" style=\"" + lgVideoStyle + "\"></div>";
                $currentSlide.prepend(markup);
            }
            else {
                this.setImgMarkup(src, $currentSlide, index);
                if (srcset || sources) {
                    var $img = $currentSlide.find('.lg-object');
                    this.initPictureFill($img);
                }
            }
            if (poster || videoInfo) {
                this.LGel.trigger(lg_events_1.lGEvents.hasVideo, {
                    index: index,
                    src: src,
                    html5Video: _html5Video,
                    hasPoster: !!poster,
                });
            }
            this.LGel.trigger(lg_events_1.lGEvents.afterAppendSlide, { index: index });
            if (this.lGalleryOn &&
                this.settings.appendSubHtmlTo === '.lg-item') {
                this.addHtml(index);
            }
        }
        // For first time add some delay for displaying the start animation.
        var _speed = 0;
        // Do not change the delay value because it is required for zoom plugin.
        // If gallery opened from direct url (hash) speed value should be 0
        if (delay && !lgQuery_1.$LG(document.body).hasClass('lg-from-hash')) {
            _speed = delay;
        }
        // Only for first slide and zoomFromOrigin is enabled
        if (this.isFirstSlideWithZoomAnimation()) {
            setTimeout(function () {
                $currentSlide
                    .removeClass('lg-start-end-progress lg-start-progress')
                    .removeAttr('style');
            }, this.settings.startAnimationDuration + 100);
            if (!$currentSlide.hasClass('lg-loaded')) {
                setTimeout(function () {
                    if (_this.getSlideType(currentGalleryItem) === 'image') {
                        var alt = currentGalleryItem.alt;
                        var altAttr = alt ? 'alt="' + alt + '"' : '';
                        $currentSlide
                            .find('.lg-img-wrap')
                            .append(lg_utils_1.default.getImgMarkup(index, src, altAttr, srcset, sizes, currentGalleryItem.sources));
                        if (srcset || sources) {
                            var $img = $currentSlide.find('.lg-object');
                            _this.initPictureFill($img);
                        }
                    }
                    if (_this.getSlideType(currentGalleryItem) === 'image' ||
                        (_this.getSlideType(currentGalleryItem) === 'video' &&
                            poster)) {
                        _this.onLgObjectLoad($currentSlide, index, delay, _speed, true, false);
                        // load remaining slides once the slide is completely loaded
                        _this.onSlideObjectLoad($currentSlide, !!(videoInfo && videoInfo.html5 && !poster), function () {
                            _this.loadContentOnFirstSlideLoad(index, $currentSlide, _speed);
                        }, function () {
                            _this.loadContentOnFirstSlideLoad(index, $currentSlide, _speed);
                        });
                    }
                }, this.settings.startAnimationDuration + 100);
            }
        }
        // SLide content has been added to dom
        $currentSlide.addClass('lg-loaded');
        if (!this.isFirstSlideWithZoomAnimation() ||
            (this.getSlideType(currentGalleryItem) === 'video' && !poster)) {
            this.onLgObjectLoad($currentSlide, index, delay, _speed, isFirstSlide, !!(videoInfo && videoInfo.html5 && !poster));
        }
        // When gallery is opened once content is loaded (second time) need to add lg-complete class for css styling
        if ((!this.zoomFromOrigin || !this.currentImageSize) &&
            $currentSlide.hasClass('lg-complete_') &&
            !this.lGalleryOn) {
            setTimeout(function () {
                $currentSlide.addClass('lg-complete');
            }, this.settings.backdropDuration);
        }
        // Content loaded
        // Need to set lGalleryOn before calling preload function
        this.lGalleryOn = true;
        if (rec === true) {
            if (!$currentSlide.hasClass('lg-complete_')) {
                $currentSlide
                    .find('.lg-object')
                    .first()
                    .on('load.lg error.lg', function () {
                    _this.preload(index);
                });
            }
            else {
                this.preload(index);
            }
        }
    };
    /**
     * @desc Remove dummy image content and load next slides
     * Called only for the first time if zoomFromOrigin animation is enabled
     * @param index
     * @param $currentSlide
     * @param speed
     */
    LightGallery.prototype.loadContentOnFirstSlideLoad = function (index, $currentSlide, speed) {
        var _this = this;
        setTimeout(function () {
            $currentSlide.find('.lg-dummy-img').remove();
            $currentSlide.removeClass('lg-first-slide');
            _this.outer.removeClass('lg-first-slide-loading');
            _this.isDummyImageRemoved = true;
            _this.preload(index);
        }, speed + 300);
    };
    LightGallery.prototype.getItemsToBeInsertedToDom = function (index, prevIndex, numberOfItems) {
        var _this = this;
        if (numberOfItems === void 0) { numberOfItems = 0; }
        var itemsToBeInsertedToDom = [];
        // Minimum 2 items should be there
        var possibleNumberOfItems = Math.max(numberOfItems, 3);
        possibleNumberOfItems = Math.min(possibleNumberOfItems, this.galleryItems.length);
        var prevIndexItem = "lg-item-" + this.lgId + "-" + prevIndex;
        if (this.galleryItems.length <= 3) {
            this.galleryItems.forEach(function (_element, index) {
                itemsToBeInsertedToDom.push("lg-item-" + _this.lgId + "-" + index);
            });
            return itemsToBeInsertedToDom;
        }
        if (index < (this.galleryItems.length - 1) / 2) {
            for (var idx = index; idx > index - possibleNumberOfItems / 2 && idx >= 0; idx--) {
                itemsToBeInsertedToDom.push("lg-item-" + this.lgId + "-" + idx);
            }
            var numberOfExistingItems = itemsToBeInsertedToDom.length;
            for (var idx = 0; idx < possibleNumberOfItems - numberOfExistingItems; idx++) {
                itemsToBeInsertedToDom.push("lg-item-" + this.lgId + "-" + (index + idx + 1));
            }
        }
        else {
            for (var idx = index; idx <= this.galleryItems.length - 1 &&
                idx < index + possibleNumberOfItems / 2; idx++) {
                itemsToBeInsertedToDom.push("lg-item-" + this.lgId + "-" + idx);
            }
            var numberOfExistingItems = itemsToBeInsertedToDom.length;
            for (var idx = 0; idx < possibleNumberOfItems - numberOfExistingItems; idx++) {
                itemsToBeInsertedToDom.push("lg-item-" + this.lgId + "-" + (index - idx - 1));
            }
        }
        if (this.settings.loop) {
            if (index === this.galleryItems.length - 1) {
                itemsToBeInsertedToDom.push("lg-item-" + this.lgId + "-" + 0);
            }
            else if (index === 0) {
                itemsToBeInsertedToDom.push("lg-item-" + this.lgId + "-" + (this.galleryItems.length - 1));
            }
        }
        if (itemsToBeInsertedToDom.indexOf(prevIndexItem) === -1) {
            itemsToBeInsertedToDom.push("lg-item-" + this.lgId + "-" + prevIndex);
        }
        return itemsToBeInsertedToDom;
    };
    LightGallery.prototype.organizeSlideItems = function (index, prevIndex) {
        var _this = this;
        var itemsToBeInsertedToDom = this.getItemsToBeInsertedToDom(index, prevIndex, this.settings.numberOfSlideItemsInDom);
        itemsToBeInsertedToDom.forEach(function (item) {
            if (_this.currentItemsInDom.indexOf(item) === -1) {
                _this.$inner.append("<div id=\"" + item + "\" class=\"lg-item\"></div>");
            }
        });
        this.currentItemsInDom.forEach(function (item) {
            if (itemsToBeInsertedToDom.indexOf(item) === -1) {
                lgQuery_1.$LG("#" + item).remove();
            }
        });
        return itemsToBeInsertedToDom;
    };
    /**
     * Get previous index of the slide
     */
    LightGallery.prototype.getPreviousSlideIndex = function () {
        var prevIndex = 0;
        try {
            var currentItemId = this.outer
                .find('.lg-current')
                .first()
                .attr('id');
            prevIndex = parseInt(currentItemId.split('-')[3]) || 0;
        }
        catch (error) {
            prevIndex = 0;
        }
        return prevIndex;
    };
    LightGallery.prototype.setDownloadValue = function (index) {
        if (this.settings.download) {
            var currentGalleryItem = this.galleryItems[index];
            var hideDownloadBtn = currentGalleryItem.downloadUrl === false ||
                currentGalleryItem.downloadUrl === 'false';
            if (hideDownloadBtn) {
                this.outer.addClass('lg-hide-download');
            }
            else {
                var $download = this.getElementById('lg-download');
                this.outer.removeClass('lg-hide-download');
                $download.attr('href', currentGalleryItem.downloadUrl ||
                    currentGalleryItem.src);
                if (currentGalleryItem.download) {
                    $download.attr('download', currentGalleryItem.download);
                }
            }
        }
    };
    LightGallery.prototype.makeSlideAnimation = function (direction, currentSlideItem, previousSlideItem) {
        var _this = this;
        if (this.lGalleryOn) {
            previousSlideItem.addClass('lg-slide-progress');
        }
        setTimeout(function () {
            // remove all transitions
            _this.outer.addClass('lg-no-trans');
            _this.outer
                .find('.lg-item')
                .removeClass('lg-prev-slide lg-next-slide');
            if (direction === 'prev') {
                //prevslide
                currentSlideItem.addClass('lg-prev-slide');
                previousSlideItem.addClass('lg-next-slide');
            }
            else {
                // next slide
                currentSlideItem.addClass('lg-next-slide');
                previousSlideItem.addClass('lg-prev-slide');
            }
            // give 50 ms for browser to add/remove class
            setTimeout(function () {
                _this.outer.find('.lg-item').removeClass('lg-current');
                currentSlideItem.addClass('lg-current');
                // reset all transitions
                _this.outer.removeClass('lg-no-trans');
            }, 50);
        }, this.lGalleryOn ? this.settings.slideDelay : 0);
    };
    /**
     * Goto a specific slide.
     * @param {Number} index - index of the slide
     * @param {Boolean} fromTouch - true if slide function called via touch event or mouse drag
     * @param {Boolean} fromThumb - true if slide function called via thumbnail click
     * @param {String} direction - Direction of the slide(next/prev)
     * @category lGPublicMethods
     * @example
     *  const plugin = lightGallery();
     *  // to go to 3rd slide
     *  plugin.slide(2);
     *
     */
    LightGallery.prototype.slide = function (index, fromTouch, fromThumb, direction) {
        var _this = this;
        var prevIndex = this.getPreviousSlideIndex();
        this.currentItemsInDom = this.organizeSlideItems(index, prevIndex);
        // Prevent multiple call, Required for hsh plugin
        if (this.lGalleryOn && prevIndex === index) {
            return;
        }
        var numberOfGalleryItems = this.galleryItems.length;
        if (!this.lgBusy) {
            if (this.settings.counter) {
                this.updateCurrentCounter(index);
            }
            var currentSlideItem = this.getSlideItem(index);
            var previousSlideItem_1 = this.getSlideItem(prevIndex);
            var currentGalleryItem = this.galleryItems[index];
            var videoInfo = currentGalleryItem.__slideVideoInfo;
            this.outer.attr('data-lg-slide-type', this.getSlideType(currentGalleryItem));
            this.setDownloadValue(index);
            if (videoInfo) {
                var _a = this.mediaContainerPosition, top_3 = _a.top, bottom = _a.bottom;
                var videoSize = lg_utils_1.default.getSize(this.items[index], this.outer, top_3 + bottom, videoInfo && this.settings.videoMaxSize);
                this.resizeVideoSlide(index, videoSize);
            }
            this.LGel.trigger(lg_events_1.lGEvents.beforeSlide, {
                prevIndex: prevIndex,
                index: index,
                fromTouch: !!fromTouch,
                fromThumb: !!fromThumb,
            });
            this.lgBusy = true;
            clearTimeout(this.hideBarTimeout);
            this.arrowDisable(index);
            if (!direction) {
                if (index < prevIndex) {
                    direction = 'prev';
                }
                else if (index > prevIndex) {
                    direction = 'next';
                }
            }
            if (!fromTouch) {
                this.makeSlideAnimation(direction, currentSlideItem, previousSlideItem_1);
            }
            else {
                this.outer
                    .find('.lg-item')
                    .removeClass('lg-prev-slide lg-current lg-next-slide');
                var touchPrev = void 0;
                var touchNext = void 0;
                if (numberOfGalleryItems > 2) {
                    touchPrev = index - 1;
                    touchNext = index + 1;
                    if (index === 0 && prevIndex === numberOfGalleryItems - 1) {
                        // next slide
                        touchNext = 0;
                        touchPrev = numberOfGalleryItems - 1;
                    }
                    else if (index === numberOfGalleryItems - 1 &&
                        prevIndex === 0) {
                        // prev slide
                        touchNext = 0;
                        touchPrev = numberOfGalleryItems - 1;
                    }
                }
                else {
                    touchPrev = 0;
                    touchNext = 1;
                }
                if (direction === 'prev') {
                    this.getSlideItem(touchNext).addClass('lg-next-slide');
                }
                else {
                    this.getSlideItem(touchPrev).addClass('lg-prev-slide');
                }
                currentSlideItem.addClass('lg-current');
            }
            // Do not put load content in set timeout as it needs to load immediately when the gallery is opened
            if (!this.lGalleryOn) {
                this.loadContent(index, true);
            }
            else {
                setTimeout(function () {
                    _this.loadContent(index, true);
                    // Add title if this.settings.appendSubHtmlTo === lg-sub-html
                    if (_this.settings.appendSubHtmlTo !== '.lg-item') {
                        _this.addHtml(index);
                    }
                }, this.settings.speed + 50 + (fromTouch ? 0 : this.settings.slideDelay));
            }
            setTimeout(function () {
                _this.lgBusy = false;
                previousSlideItem_1.removeClass('lg-slide-progress');
                _this.LGel.trigger(lg_events_1.lGEvents.afterSlide, {
                    prevIndex: prevIndex,
                    index: index,
                    fromTouch: fromTouch,
                    fromThumb: fromThumb,
                });
            }, (this.lGalleryOn ? this.settings.speed + 100 : 100) + (fromTouch ? 0 : this.settings.slideDelay));
        }
        this.index = index;
    };
    LightGallery.prototype.updateCurrentCounter = function (index) {
        this.getElementById('lg-counter-current').html(index + 1 + '');
    };
    LightGallery.prototype.updateCounterTotal = function () {
        this.getElementById('lg-counter-all').html(this.galleryItems.length + '');
    };
    LightGallery.prototype.getSlideType = function (item) {
        if (item.__slideVideoInfo) {
            return 'video';
        }
        else if (item.iframe) {
            return 'iframe';
        }
        else {
            return 'image';
        }
    };
    LightGallery.prototype.touchMove = function (startCoords, endCoords, e) {
        var distanceX = endCoords.pageX - startCoords.pageX;
        var distanceY = endCoords.pageY - startCoords.pageY;
        var allowSwipe = false;
        if (this.swipeDirection) {
            allowSwipe = true;
        }
        else {
            if (Math.abs(distanceX) > 15) {
                this.swipeDirection = 'horizontal';
                allowSwipe = true;
            }
            else if (Math.abs(distanceY) > 15) {
                this.swipeDirection = 'vertical';
                allowSwipe = true;
            }
        }
        if (!allowSwipe) {
            return;
        }
        var $currentSlide = this.getSlideItem(this.index);
        if (this.swipeDirection === 'horizontal') {
            e === null || e === void 0 ? void 0 : e.preventDefault();
            // reset opacity and transition duration
            this.outer.addClass('lg-dragging');
            // move current slide
            this.setTranslate($currentSlide, distanceX, 0);
            // move next and prev slide with current slide
            var width = $currentSlide.get().offsetWidth;
            var slideWidthAmount = (width * 15) / 100;
            var gutter = slideWidthAmount - Math.abs((distanceX * 10) / 100);
            this.setTranslate(this.outer.find('.lg-prev-slide').first(), -width + distanceX - gutter, 0);
            this.setTranslate(this.outer.find('.lg-next-slide').first(), width + distanceX + gutter, 0);
        }
        else if (this.swipeDirection === 'vertical') {
            if (this.settings.swipeToClose) {
                e === null || e === void 0 ? void 0 : e.preventDefault();
                this.$container.addClass('lg-dragging-vertical');
                var opacity = 1 - Math.abs(distanceY) / window.innerHeight;
                this.$backdrop.css('opacity', opacity);
                var scale = 1 - Math.abs(distanceY) / (window.innerWidth * 2);
                this.setTranslate($currentSlide, 0, distanceY, scale, scale);
                if (Math.abs(distanceY) > 100) {
                    this.outer
                        .addClass('lg-hide-items')
                        .removeClass('lg-components-open');
                }
            }
        }
    };
    LightGallery.prototype.touchEnd = function (endCoords, startCoords, event) {
        var _this = this;
        var distance;
        // keep slide animation for any mode while dragg/swipe
        if (this.settings.mode !== 'lg-slide') {
            this.outer.addClass('lg-slide');
        }
        // set transition duration
        setTimeout(function () {
            _this.$container.removeClass('lg-dragging-vertical');
            _this.outer
                .removeClass('lg-dragging lg-hide-items')
                .addClass('lg-components-open');
            var triggerClick = true;
            if (_this.swipeDirection === 'horizontal') {
                distance = endCoords.pageX - startCoords.pageX;
                var distanceAbs = Math.abs(endCoords.pageX - startCoords.pageX);
                if (distance < 0 &&
                    distanceAbs > _this.settings.swipeThreshold) {
                    _this.goToNextSlide(true);
                    triggerClick = false;
                }
                else if (distance > 0 &&
                    distanceAbs > _this.settings.swipeThreshold) {
                    _this.goToPrevSlide(true);
                    triggerClick = false;
                }
            }
            else if (_this.swipeDirection === 'vertical') {
                distance = Math.abs(endCoords.pageY - startCoords.pageY);
                if (_this.settings.closable &&
                    _this.settings.swipeToClose &&
                    distance > 100) {
                    _this.closeGallery();
                    return;
                }
                else {
                    _this.$backdrop.css('opacity', 1);
                }
            }
            _this.outer.find('.lg-item').removeAttr('style');
            if (triggerClick &&
                Math.abs(endCoords.pageX - startCoords.pageX) < 5) {
                // Trigger click if distance is less than 5 pix
                var target = lgQuery_1.$LG(event.target);
                if (_this.isPosterElement(target)) {
                    _this.LGel.trigger(lg_events_1.lGEvents.posterClick);
                }
            }
            _this.swipeDirection = undefined;
        });
        // remove slide class once drag/swipe is completed if mode is not slide
        setTimeout(function () {
            if (!_this.outer.hasClass('lg-dragging') &&
                _this.settings.mode !== 'lg-slide') {
                _this.outer.removeClass('lg-slide');
            }
        }, this.settings.speed + 100);
    };
    LightGallery.prototype.enableSwipe = function () {
        var _this = this;
        var startCoords = {};
        var endCoords = {};
        var isMoved = false;
        var isSwiping = false;
        if (this.settings.enableSwipe) {
            this.$inner.on('touchstart.lg', function (e) {
                _this.dragOrSwipeEnabled = true;
                var $item = _this.getSlideItem(_this.index);
                if ((lgQuery_1.$LG(e.target).hasClass('lg-item') ||
                    $item.get().contains(e.target)) &&
                    !_this.outer.hasClass('lg-zoomed') &&
                    !_this.lgBusy &&
                    e.touches.length === 1) {
                    isSwiping = true;
                    _this.touchAction = 'swipe';
                    _this.manageSwipeClass();
                    startCoords = {
                        pageX: e.touches[0].pageX,
                        pageY: e.touches[0].pageY,
                    };
                }
            });
            this.$inner.on('touchmove.lg', function (e) {
                if (isSwiping &&
                    _this.touchAction === 'swipe' &&
                    e.touches.length === 1) {
                    endCoords = {
                        pageX: e.touches[0].pageX,
                        pageY: e.touches[0].pageY,
                    };
                    _this.touchMove(startCoords, endCoords, e);
                    isMoved = true;
                }
            });
            this.$inner.on('touchend.lg', function (event) {
                if (_this.touchAction === 'swipe') {
                    if (isMoved) {
                        isMoved = false;
                        _this.touchEnd(endCoords, startCoords, event);
                    }
                    else if (isSwiping) {
                        var target = lgQuery_1.$LG(event.target);
                        if (_this.isPosterElement(target)) {
                            _this.LGel.trigger(lg_events_1.lGEvents.posterClick);
                        }
                    }
                    _this.touchAction = undefined;
                    isSwiping = false;
                }
            });
        }
    };
    LightGallery.prototype.enableDrag = function () {
        var _this = this;
        var startCoords = {};
        var endCoords = {};
        var isDraging = false;
        var isMoved = false;
        if (this.settings.enableDrag) {
            this.outer.on('mousedown.lg', function (e) {
                _this.dragOrSwipeEnabled = true;
                var $item = _this.getSlideItem(_this.index);
                if (lgQuery_1.$LG(e.target).hasClass('lg-item') ||
                    $item.get().contains(e.target)) {
                    if (!_this.outer.hasClass('lg-zoomed') && !_this.lgBusy) {
                        e.preventDefault();
                        if (!_this.lgBusy) {
                            _this.manageSwipeClass();
                            startCoords = {
                                pageX: e.pageX,
                                pageY: e.pageY,
                            };
                            isDraging = true;
                            // ** Fix for webkit cursor issue https://code.google.com/p/chromium/issues/detail?id=26723
                            _this.outer.get().scrollLeft += 1;
                            _this.outer.get().scrollLeft -= 1;
                            // *
                            _this.outer
                                .removeClass('lg-grab')
                                .addClass('lg-grabbing');
                            _this.LGel.trigger(lg_events_1.lGEvents.dragStart);
                        }
                    }
                }
            });
            lgQuery_1.$LG(window).on("mousemove.lg.global" + this.lgId, function (e) {
                if (isDraging && _this.lgOpened) {
                    isMoved = true;
                    endCoords = {
                        pageX: e.pageX,
                        pageY: e.pageY,
                    };
                    _this.touchMove(startCoords, endCoords);
                    _this.LGel.trigger(lg_events_1.lGEvents.dragMove);
                }
            });
            lgQuery_1.$LG(window).on("mouseup.lg.global" + this.lgId, function (event) {
                if (!_this.lgOpened) {
                    return;
                }
                var target = lgQuery_1.$LG(event.target);
                if (isMoved) {
                    isMoved = false;
                    _this.touchEnd(endCoords, startCoords, event);
                    _this.LGel.trigger(lg_events_1.lGEvents.dragEnd);
                }
                else if (_this.isPosterElement(target)) {
                    _this.LGel.trigger(lg_events_1.lGEvents.posterClick);
                }
                // Prevent execution on click
                if (isDraging) {
                    isDraging = false;
                    _this.outer.removeClass('lg-grabbing').addClass('lg-grab');
                }
            });
        }
    };
    LightGallery.prototype.triggerPosterClick = function () {
        var _this = this;
        this.$inner.on('click.lg', function (event) {
            if (!_this.dragOrSwipeEnabled &&
                _this.isPosterElement(lgQuery_1.$LG(event.target))) {
                _this.LGel.trigger(lg_events_1.lGEvents.posterClick);
            }
        });
    };
    LightGallery.prototype.manageSwipeClass = function () {
        var _touchNext = this.index + 1;
        var _touchPrev = this.index - 1;
        if (this.settings.loop && this.galleryItems.length > 2) {
            if (this.index === 0) {
                _touchPrev = this.galleryItems.length - 1;
            }
            else if (this.index === this.galleryItems.length - 1) {
                _touchNext = 0;
            }
        }
        this.outer.find('.lg-item').removeClass('lg-next-slide lg-prev-slide');
        if (_touchPrev > -1) {
            this.getSlideItem(_touchPrev).addClass('lg-prev-slide');
        }
        this.getSlideItem(_touchNext).addClass('lg-next-slide');
    };
    /**
     * Go to next slide
     * @param {Boolean} fromTouch - true if slide function called via touch event
     * @category lGPublicMethods
     * @example
     *  const plugin = lightGallery();
     *  plugin.goToNextSlide();
     * @see <a href="/demos/methods/">Demo</a>
     */
    LightGallery.prototype.goToNextSlide = function (fromTouch) {
        var _this = this;
        var _loop = this.settings.loop;
        if (fromTouch && this.galleryItems.length < 3) {
            _loop = false;
        }
        if (!this.lgBusy) {
            if (this.index + 1 < this.galleryItems.length) {
                this.index++;
                this.LGel.trigger(lg_events_1.lGEvents.beforeNextSlide, {
                    index: this.index,
                });
                this.slide(this.index, !!fromTouch, false, 'next');
            }
            else {
                if (_loop) {
                    this.index = 0;
                    this.LGel.trigger(lg_events_1.lGEvents.beforeNextSlide, {
                        index: this.index,
                    });
                    this.slide(this.index, !!fromTouch, false, 'next');
                }
                else if (this.settings.slideEndAnimation && !fromTouch) {
                    this.outer.addClass('lg-right-end');
                    setTimeout(function () {
                        _this.outer.removeClass('lg-right-end');
                    }, 400);
                }
            }
        }
    };
    /**
     * Go to previous slides
     * @param {Boolean} fromTouch - true if slide function called via touch event
     * @category lGPublicMethods
     * @example
     *  const plugin = lightGallery({});
     *  plugin.goToPrevSlide();
     * @see <a href="/demos/methods/">Demo</a>
     *
     */
    LightGallery.prototype.goToPrevSlide = function (fromTouch) {
        var _this = this;
        var _loop = this.settings.loop;
        if (fromTouch && this.galleryItems.length < 3) {
            _loop = false;
        }
        if (!this.lgBusy) {
            if (this.index > 0) {
                this.index--;
                this.LGel.trigger(lg_events_1.lGEvents.beforePrevSlide, {
                    index: this.index,
                    fromTouch: fromTouch,
                });
                this.slide(this.index, !!fromTouch, false, 'prev');
            }
            else {
                if (_loop) {
                    this.index = this.galleryItems.length - 1;
                    this.LGel.trigger(lg_events_1.lGEvents.beforePrevSlide, {
                        index: this.index,
                        fromTouch: fromTouch,
                    });
                    this.slide(this.index, !!fromTouch, false, 'prev');
                }
                else if (this.settings.slideEndAnimation && !fromTouch) {
                    this.outer.addClass('lg-left-end');
                    setTimeout(function () {
                        _this.outer.removeClass('lg-left-end');
                    }, 400);
                }
            }
        }
    };
    LightGallery.prototype.keyPress = function () {
        var _this = this;
        lgQuery_1.$LG(window).on("keydown.lg.global" + this.lgId, function (e) {
            if (_this.lgOpened &&
                _this.settings.escKey === true &&
                e.keyCode === 27) {
                e.preventDefault();
                if (_this.settings.allowMediaOverlap &&
                    _this.outer.hasClass('lg-can-toggle') &&
                    _this.outer.hasClass('lg-components-open')) {
                    _this.outer.removeClass('lg-components-open');
                }
                else {
                    _this.closeGallery();
                }
            }
            if (_this.lgOpened && _this.galleryItems.length > 1) {
                if (e.keyCode === 37) {
                    e.preventDefault();
                    _this.goToPrevSlide();
                }
                if (e.keyCode === 39) {
                    e.preventDefault();
                    _this.goToNextSlide();
                }
            }
        });
    };
    LightGallery.prototype.arrow = function () {
        var _this = this;
        this.getElementById('lg-prev').on('click.lg', function () {
            _this.goToPrevSlide();
        });
        this.getElementById('lg-next').on('click.lg', function () {
            _this.goToNextSlide();
        });
    };
    LightGallery.prototype.arrowDisable = function (index) {
        // Disable arrows if settings.hideControlOnEnd is true
        if (!this.settings.loop && this.settings.hideControlOnEnd) {
            var $prev = this.getElementById('lg-prev');
            var $next = this.getElementById('lg-next');
            if (index + 1 === this.galleryItems.length) {
                $next.attr('disabled', 'disabled').addClass('disabled');
            }
            else {
                $next.removeAttr('disabled').removeClass('disabled');
            }
            if (index === 0) {
                $prev.attr('disabled', 'disabled').addClass('disabled');
            }
            else {
                $prev.removeAttr('disabled').removeClass('disabled');
            }
        }
    };
    LightGallery.prototype.setTranslate = function ($el, xValue, yValue, scaleX, scaleY) {
        if (scaleX === void 0) { scaleX = 1; }
        if (scaleY === void 0) { scaleY = 1; }
        $el.css('transform', 'translate3d(' +
            xValue +
            'px, ' +
            yValue +
            'px, 0px) scale3d(' +
            scaleX +
            ', ' +
            scaleY +
            ', 1)');
    };
    LightGallery.prototype.mousewheel = function () {
        var _this = this;
        var lastCall = 0;
        this.outer.on('wheel.lg', function (e) {
            if (!e.deltaY || _this.galleryItems.length < 2) {
                return;
            }
            e.preventDefault();
            var now = new Date().getTime();
            if (now - lastCall < 1000) {
                return;
            }
            lastCall = now;
            if (e.deltaY > 0) {
                _this.goToNextSlide();
            }
            else if (e.deltaY < 0) {
                _this.goToPrevSlide();
            }
        });
    };
    LightGallery.prototype.isSlideElement = function (target) {
        return (target.hasClass('lg-outer') ||
            target.hasClass('lg-item') ||
            target.hasClass('lg-img-wrap'));
    };
    LightGallery.prototype.isPosterElement = function (target) {
        var playButton = this.getSlideItem(this.index)
            .find('.lg-video-play-button')
            .get();
        return (target.hasClass('lg-video-poster') ||
            target.hasClass('lg-video-play-button') ||
            (playButton && playButton.contains(target.get())));
    };
    /**
     * Maximize minimize inline gallery.
     * @category lGPublicMethods
     */
    LightGallery.prototype.toggleMaximize = function () {
        var _this = this;
        this.getElementById('lg-maximize').on('click.lg', function () {
            _this.$container.toggleClass('lg-inline');
            _this.refreshOnResize();
        });
    };
    LightGallery.prototype.invalidateItems = function () {
        for (var index = 0; index < this.items.length; index++) {
            var element = this.items[index];
            var $element = lgQuery_1.$LG(element);
            $element.off("click.lgcustom-item-" + $element.attr('data-lg-id'));
        }
    };
    LightGallery.prototype.trapFocus = function () {
        var _this = this;
        this.$container.get().focus({
            preventScroll: true,
        });
        lgQuery_1.$LG(window).on("keydown.lg.global" + this.lgId, function (e) {
            if (!_this.lgOpened) {
                return;
            }
            var isTabPressed = e.key === 'Tab' || e.keyCode === 9;
            if (!isTabPressed) {
                return;
            }
            var focusableEls = lg_utils_1.default.getFocusableElements(_this.$container.get());
            var firstFocusableEl = focusableEls[0];
            var lastFocusableEl = focusableEls[focusableEls.length - 1];
            if (e.shiftKey) {
                if (document.activeElement === firstFocusableEl) {
                    lastFocusableEl.focus();
                    e.preventDefault();
                }
            }
            else {
                if (document.activeElement === lastFocusableEl) {
                    firstFocusableEl.focus();
                    e.preventDefault();
                }
            }
        });
    };
    LightGallery.prototype.manageCloseGallery = function () {
        var _this = this;
        if (!this.settings.closable)
            return;
        var mousedown = false;
        this.getElementById('lg-close').on('click.lg', function () {
            _this.closeGallery();
        });
        if (this.settings.closeOnTap) {
            // If you drag the slide and release outside gallery gets close on chrome
            // for preventing this check mousedown and mouseup happened on .lg-item or lg-outer
            this.outer.on('mousedown.lg', function (e) {
                var target = lgQuery_1.$LG(e.target);
                if (_this.isSlideElement(target)) {
                    mousedown = true;
                }
                else {
                    mousedown = false;
                }
            });
            this.outer.on('mousemove.lg', function () {
                mousedown = false;
            });
            this.outer.on('mouseup.lg', function (e) {
                var target = lgQuery_1.$LG(e.target);
                if (_this.isSlideElement(target) && mousedown) {
                    if (!_this.outer.hasClass('lg-dragging')) {
                        _this.closeGallery();
                    }
                }
            });
        }
    };
    /**
     * Close lightGallery if it is opened.
     *
     * @description If closable is false in the settings, you need to pass true via closeGallery method to force close gallery
     * @return returns the estimated time to close gallery completely including the close animation duration
     * @category lGPublicMethods
     * @example
     *  const plugin = lightGallery();
     *  plugin.closeGallery();
     *
     */
    LightGallery.prototype.closeGallery = function (force) {
        var _this = this;
        if (!this.lgOpened || (!this.settings.closable && !force)) {
            return 0;
        }
        this.LGel.trigger(lg_events_1.lGEvents.beforeClose);
        if (this.settings.resetScrollPosition && !this.settings.hideScrollbar) {
            lgQuery_1.$LG(window).scrollTop(this.prevScrollTop);
        }
        var currentItem = this.items[this.index];
        var transform;
        if (this.zoomFromOrigin && currentItem) {
            var _a = this.mediaContainerPosition, top_4 = _a.top, bottom = _a.bottom;
            var _b = this.galleryItems[this.index], __slideVideoInfo = _b.__slideVideoInfo, poster = _b.poster;
            var imageSize = lg_utils_1.default.getSize(currentItem, this.outer, top_4 + bottom, __slideVideoInfo && poster && this.settings.videoMaxSize);
            transform = lg_utils_1.default.getTransform(currentItem, this.outer, top_4, bottom, imageSize);
        }
        if (this.zoomFromOrigin && transform) {
            this.outer.addClass('lg-closing lg-zoom-from-image');
            this.getSlideItem(this.index)
                .addClass('lg-start-end-progress')
                .css('transition-duration', this.settings.startAnimationDuration + 'ms')
                .css('transform', transform);
        }
        else {
            this.outer.addClass('lg-hide-items');
            // lg-zoom-from-image is used for setting the opacity to 1 if zoomFromOrigin is true
            // If the closing item doesn't have the lg-size attribute, remove this class to avoid the closing css conflicts
            this.outer.removeClass('lg-zoom-from-image');
        }
        // Unbind all events added by lightGallery
        // @todo
        //this.$el.off('.lg.tm');
        this.destroyModules();
        this.lGalleryOn = false;
        this.isDummyImageRemoved = false;
        this.zoomFromOrigin = this.settings.zoomFromOrigin;
        clearTimeout(this.hideBarTimeout);
        this.hideBarTimeout = false;
        lgQuery_1.$LG('html').removeClass('lg-on');
        this.outer.removeClass('lg-visible lg-components-open');
        // Resetting opacity to 0 isd required as  vertical swipe to close function adds inline opacity.
        this.$backdrop.removeClass('in').css('opacity', 0);
        var removeTimeout = this.zoomFromOrigin && transform
            ? Math.max(this.settings.startAnimationDuration, this.settings.backdropDuration)
            : this.settings.backdropDuration;
        this.$container.removeClass('lg-show-in');
        // Once the closign animation is completed and gallery is invisible
        setTimeout(function () {
            if (_this.zoomFromOrigin && transform) {
                _this.outer.removeClass('lg-zoom-from-image');
            }
            _this.$container.removeClass('lg-show');
            // Reset scrollbar
            _this.resetScrollBar();
            // Need to remove inline opacity as it is used in the stylesheet as well
            _this.$backdrop
                .removeAttr('style')
                .css('transition-duration', _this.settings.backdropDuration + 'ms');
            _this.outer.removeClass("lg-closing " + _this.settings.startClass);
            _this.getSlideItem(_this.index).removeClass('lg-start-end-progress');
            _this.$inner.empty();
            if (_this.lgOpened) {
                _this.LGel.trigger(lg_events_1.lGEvents.afterClose, {
                    instance: _this,
                });
            }
            if (_this.$container.get()) {
                _this.$container.get().blur();
            }
            _this.lgOpened = false;
        }, removeTimeout + 100);
        return removeTimeout + 100;
    };
    LightGallery.prototype.initModules = function () {
        this.plugins.forEach(function (module) {
            try {
                module.init();
            }
            catch (err) {
                console.warn("lightGallery:- make sure lightGallery module is properly initiated");
            }
        });
    };
    LightGallery.prototype.destroyModules = function (destroy) {
        this.plugins.forEach(function (module) {
            try {
                if (destroy) {
                    module.destroy();
                }
                else {
                    module.closeGallery && module.closeGallery();
                }
            }
            catch (err) {
                console.warn("lightGallery:- make sure lightGallery module is properly destroyed");
            }
        });
    };
    /**
     * Refresh lightGallery with new set of children.
     *
     * @description This is useful to update the gallery when the child elements are changed without calling destroy method.
     *
     * If you are using dynamic mode, you can pass the modified array of dynamicEl as the first parameter to refresh the dynamic gallery
     * @see <a href="/demos/dynamic-mode/">Demo</a>
     * @category lGPublicMethods
     * @example
     *  const plugin = lightGallery();
     *  // Delete or add children, then call
     *  plugin.refresh();
     *
     */
    LightGallery.prototype.refresh = function (galleryItems) {
        if (!this.settings.dynamic) {
            this.invalidateItems();
        }
        if (galleryItems) {
            this.galleryItems = galleryItems;
        }
        else {
            this.galleryItems = this.getItems();
        }
        this.updateControls();
        this.openGalleryOnItemClick();
        this.LGel.trigger(lg_events_1.lGEvents.updateSlides);
    };
    LightGallery.prototype.updateControls = function () {
        this.addSlideVideoInfo(this.galleryItems);
        this.updateCounterTotal();
        this.manageSingleSlideClassName();
    };
    LightGallery.prototype.destroyGallery = function () {
        this.destroyModules(true);
        if (!this.settings.dynamic) {
            this.invalidateItems();
        }
        lgQuery_1.$LG(window).off(".lg.global" + this.lgId);
        this.LGel.off('.lg');
        this.$container.remove();
    };
    /**
     * Destroy lightGallery.
     * Destroy lightGallery and its plugin instances completely
     *
     * @description This method also calls CloseGallery function internally. Returns the time takes to completely close and destroy the instance.
     * In case if you want to re-initialize lightGallery right after destroying it, initialize it only once the destroy process is completed.
     * You can use refresh method most of the times.
     * @category lGPublicMethods
     * @example
     *  const plugin = lightGallery();
     *  plugin.destroy();
     *
     */
    LightGallery.prototype.destroy = function () {
        var closeTimeout = this.closeGallery(true);
        if (closeTimeout) {
            setTimeout(this.destroyGallery.bind(this), closeTimeout);
        }
        else {
            this.destroyGallery();
        }
        return closeTimeout;
    };
    return LightGallery;
}());
exports.LightGallery = LightGallery;
//# sourceMappingURL=lightgallery.js.map