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(root, factory) {\r\n\r\n    if (typeof define === 'function' && define.amd) {\r\n        define([], factory);\r\n    } else if (typeof module === 'object' && module.exports) {\r\n        module.exports = factory();\r\n    } else {\r\n        root.SimpleLightbox = factory();\r\n    }\r\n\r\n}(this, function () {\r\n\r\n    function assign(target) {\r\n\r\n        for (var i = 1; i < arguments.length; i++) {\r\n\r\n            var obj = arguments[i];\r\n\r\n            if (obj) {\r\n                for (var key in obj) {\r\n                    obj.hasOwnProperty(key) && (target[key] = obj[key]);\r\n                }\r\n            }\r\n\r\n        }\r\n\r\n        return target;\r\n\r\n    }\r\n\r\n    function addClass(element, className) {\r\n\r\n        if (element && className) {\r\n            element.className += ' ' + className;\r\n        }\r\n\r\n    }\r\n\r\n    function removeClass(element, className) {\r\n\r\n        if (element && className) {\r\n            element.className = element.className.replace(\r\n                new RegExp('(\\\\s|^)' + className + '(\\\\s|$)'), ' '\r\n            ).trim();\r\n        }\r\n\r\n    }\r\n\r\n    function parseHtml(html) {\r\n\r\n        var div = document.createElement('div');\r\n        div.innerHTML = html.trim();\r\n\r\n        return div.childNodes[0];\r\n\r\n    }\r\n\r\n    function matches(el, selector) {\r\n\r\n        return (el.matches || el.matchesSelector || el.msMatchesSelector).call(el, selector);\r\n\r\n    }\r\n\r\n    function getWindowHeight() {\r\n\r\n        return 'innerHeight' in window\r\n            ? window.innerHeight\r\n            : document.documentElement.offsetHeight;\r\n\r\n    }\r\n\r\n    function SimpleLightbox(options) {\r\n\r\n        this.init.apply(this, arguments);\r\n\r\n    }\r\n\r\n    SimpleLightbox.defaults = {\r\n\r\n        // add custom classes to lightbox elements\r\n        elementClass: '',\r\n        elementLoadingClass: 'slbLoading',\r\n        htmlClass: 'slbActive',\r\n        closeBtnClass: '',\r\n        nextBtnClass: '',\r\n        prevBtnClass: '',\r\n        loadingTextClass: '',\r\n\r\n        // customize / localize controls captions\r\n        closeBtnCaption: 'Close',\r\n        nextBtnCaption: 'Next',\r\n        prevBtnCaption: 'Previous',\r\n        loadingCaption: 'Loading...',\r\n\r\n        bindToItems: true, // set click event handler to trigger lightbox on provided $items\r\n        closeOnOverlayClick: true,\r\n        closeOnEscapeKey: true,\r\n        nextOnImageClick: true,\r\n        showCaptions: false,\r\n\r\n        captionAttribute: 'title', // choose data source for library to glean image caption from\r\n        urlAttribute: 'href', // where to expect large image\r\n\r\n        startAt: 0, // start gallery at custom index\r\n        loadingTimeout: 100, // time after loading element will appear\r\n\r\n        appendTarget: 'body', // append elsewhere if needed\r\n\r\n        beforeSetContent: null, // convenient hooks for extending library behavoiur\r\n        beforeClose: null,\r\n        afterClose: null,\r\n        beforeDestroy: null,\r\n        afterDestroy: null,\r\n\r\n        videoRegex: new RegExp(/youtube.com|vimeo.com/) // regex which tests load url for iframe content\r\n\r\n    };\r\n\r\n    assign(SimpleLightbox.prototype, {\r\n\r\n        init: function (options) {\r\n\r\n            options = this.options = assign({}, SimpleLightbox.defaults, options);\r\n\r\n            var self = this;\r\n            var elements;\r\n\r\n            if (options.$items) {\r\n                elements = options.$items.get();\r\n            }\r\n\r\n            if (options.elements) {\r\n                elements = [].slice.call(\r\n                    typeof options.elements === 'string'\r\n                        ? document.querySelectorAll(options.elements)\r\n                        : options.elements\r\n                );\r\n            }\r\n\r\n            this.eventRegistry = { lightbox: [], thumbnails: [] };\r\n            this.items = [];\r\n            this.captions = [];\r\n\r\n            if (elements) {\r\n\r\n                elements.forEach(function (element, index) {\r\n\r\n                    self.items.push(element.getAttribute(options.urlAttribute));\r\n                    self.captions.push(element.getAttribute(options.captionAttribute));\r\n\r\n                    if (options.bindToItems) {\r\n\r\n                        self.addEvent(element, 'click', function (e) {\r\n\r\n                            e.preventDefault();\r\n                            self.showPosition(index);\r\n\r\n                        }, 'thumbnails');\r\n\r\n                    }\r\n\r\n                });\r\n\r\n            }\r\n\r\n            if (options.items) {\r\n                this.items = options.items;\r\n            }\r\n\r\n            if (options.captions) {\r\n                this.captions = options.captions;\r\n            }\r\n\r\n        },\r\n\r\n        addEvent: function (element, eventName, callback, scope) {\r\n\r\n            this.eventRegistry[scope || 'lightbox'].push({\r\n                element: element,\r\n                eventName: eventName,\r\n                callback: callback\r\n            });\r\n\r\n            element.addEventListener(eventName, callback);\r\n\r\n            return this;\r\n\r\n        },\r\n\r\n        removeEvents: function (scope) {\r\n\r\n            this.eventRegistry[scope].forEach(function (item) {\r\n                item.element.removeEventListener(item.eventName, item.callback);\r\n            });\r\n\r\n            this.eventRegistry[scope] = [];\r\n\r\n            return this;\r\n\r\n        },\r\n\r\n        next: function () {\r\n\r\n            return this.showPosition(this.currentPosition + 1);\r\n\r\n        },\r\n\r\n        prev: function () {\r\n\r\n            return this.showPosition(this.currentPosition - 1);\r\n\r\n        },\r\n\r\n        normalizePosition: function (position) {\r\n\r\n            if (position >= this.items.length) {\r\n                position = 0;\r\n            } else if (position < 0) {\r\n                position = this.items.length - 1;\r\n            }\r\n\r\n            return position;\r\n\r\n        },\r\n\r\n        showPosition: function (position) {\r\n\r\n            var newPosition = this.normalizePosition(position);\r\n\r\n            if (typeof this.currentPosition !== 'undefined') {\r\n                this.direction = newPosition > this.currentPosition ? 'next' : 'prev';\r\n            }\r\n\r\n            this.currentPosition = newPosition;\r\n\r\n            return this.setupLightboxHtml()\r\n                .prepareItem(this.currentPosition, this.setContent)\r\n                .show();\r\n\r\n        },\r\n\r\n        loading: function (on) {\r\n\r\n            var self = this;\r\n            var options = this.options;\r\n\r\n            if (on) {\r\n\r\n                this.loadingTimeout = setTimeout(function () {\r\n\r\n                    addClass(self.$el, options.elementLoadingClass);\r\n\r\n                    self.$content.innerHTML =\r\n                        '<p class=\"slbLoadingText ' + options.loadingTextClass + '\">' +\r\n                        options.loadingCaption +\r\n                        '</p>';\r\n                    self.show();\r\n\r\n                }, options.loadingTimeout);\r\n\r\n            } else {\r\n\r\n                removeClass(this.$el, options.elementLoadingClass);\r\n                clearTimeout(this.loadingTimeout);\r\n\r\n            }\r\n\r\n        },\r\n\r\n        prepareItem: function (position, callback) {\r\n\r\n            var self = this;\r\n            var url = this.items[position];\r\n\r\n            this.loading(true);\r\n\r\n            if (this.options.videoRegex.test(url)) {\r\n\r\n                callback.call(self, parseHtml(\r\n                    '<div class=\"slbIframeCont\"><iframe class=\"slbIframe\" frameborder=\"0\" allowfullscreen src=\"' + url + '\"></iframe></div>')\r\n                );\r\n\r\n            } else {\r\n\r\n                var $imageCont = parseHtml(\r\n                    '<div class=\"slbImageWrap\"><img class=\"slbImage\" src=\"' + url + '\" /></div>'\r\n                );\r\n\r\n                this.$currentImage = $imageCont.querySelector('.slbImage');\r\n                \r\n                if (this.options.showCaptions && this.captions[position]) {\r\n                    $imageCont.appendChild(parseHtml(\r\n                        '<div class=\"slbCaption\">' + this.captions[position] + '</div> ')\r\n                    );\r\n                }\r\n                var originalUrl = this.items[position];\r\n                originalUrl = originalUrl.split('?')[0];\r\n                $imageCont.appendChild(parseHtml(\r\n                    '<a class=\"gallery__item-download\" download href=\"' + originalUrl + '\" >Download</a> ')\r\n                );\r\n\r\n                this.loadImage(url, function () {\r\n\r\n                    self.setImageDimensions();\r\n\r\n                    callback.call(self, $imageCont);\r\n\r\n                    self.loadImage(self.items[self.normalizePosition(self.currentPosition + 1)]);\r\n\r\n                });\r\n\r\n            }\r\n\r\n            return this;\r\n\r\n        },\r\n\r\n        loadImage: function (url, callback) {\r\n\r\n            if (!this.options.videoRegex.test(url)) {\r\n\r\n                var image = new Image();\r\n                callback && (image.onload = callback);\r\n                image.src = url;\r\n\r\n            }\r\n\r\n        },\r\n\r\n        setupLightboxHtml: function () {\r\n\r\n            var o = this.options;\r\n          \r\n            if (!this.$el) {\r\n             \r\n                this.$el = parseHtml(\r\n                    '<div class=\"slbElement ' + o.elementClass + '\">' +\r\n                    '<div class=\"slbOverlay\"></div>' +\r\n                    '<div class=\"slbWrapOuter\">' +\r\n                    '<div class=\"slbWrap\">' +\r\n                    '<div class=\"slbContentOuter\">' +\r\n                    '<div class=\"slbContent\"></div>' +\r\n                    '<button type=\"button\" title=\"' + o.closeBtnCaption + '\" class=\"slbCloseBtn ' + o.closeBtnClass + '\">x</button>' +\r\n                    (this.items.length > 1\r\n                        ? '<div class=\"slbArrows\">' +\r\n                        '<button type=\"button\" title=\"' + o.prevBtnCaption + '\" class=\"prev slbArrow' + o.prevBtnClass + '\">' + o.prevBtnCaption + '</button>' +\r\n                        '<button type=\"button\" title=\"' + o.nextBtnCaption + '\" class=\"next slbArrow' + o.nextBtnClass + '\">' + o.nextBtnCaption + '</button>' +\r\n                        '</div>'\r\n                        : ''\r\n                    ) +\r\n                    '</div>' +\r\n                    '</div>' +\r\n                    '</div>' +\r\n                    '</div>'\r\n                );\r\n\r\n                this.$content = this.$el.querySelector('.slbContent');\r\n\r\n            }\r\n\r\n            this.$content.innerHTML = '';\r\n\r\n            return this;\r\n\r\n        },\r\n\r\n        show: function () {\r\n\r\n            if (!this.modalInDom) {\r\n\r\n                document.querySelector(this.options.appendTarget).appendChild(this.$el);\r\n                addClass(document.documentElement, this.options.htmlClass);\r\n                this.setupLightboxEvents();\r\n                this.modalInDom = true;\r\n\r\n            }\r\n\r\n            return this;\r\n\r\n        },\r\n\r\n        setContent: function (content) {\r\n\r\n            var $content = typeof content === 'string'\r\n                ? parseHtml(content)\r\n                : content\r\n                ;\r\n\r\n            this.loading(false);\r\n\r\n            this.setupLightboxHtml();\r\n\r\n            removeClass(this.$content, 'slbDirectionNext');\r\n            removeClass(this.$content, 'slbDirectionPrev');\r\n\r\n            if (this.direction) {\r\n                addClass(this.$content, this.direction === 'next'\r\n                    ? 'slbDirectionNext'\r\n                    : 'slbDirectionPrev'\r\n                );\r\n            }\r\n\r\n            if (this.options.beforeSetContent) {\r\n                this.options.beforeSetContent($content, this);\r\n            }\r\n\r\n            this.$content.appendChild($content);\r\n\r\n            return this;\r\n\r\n        },\r\n\r\n        setImageDimensions: function () {\r\n\r\n            if (this.$currentImage) {\r\n                this.$currentImage.style.maxHeight = getWindowHeight() + 'px';\r\n            }\r\n\r\n        },\r\n\r\n        setupLightboxEvents: function () {\r\n\r\n            var self = this;\r\n\r\n            if (this.eventRegistry.lightbox.length) {\r\n                return this;\r\n            }\r\n\r\n            this.addEvent(this.$el, 'click', function (e) {\r\n\r\n                var $target = e.target;\r\n\r\n                if (matches($target, '.slbCloseBtn') || (self.options.closeOnOverlayClick && matches($target, '.slbWrap'))) {\r\n\r\n                    self.close();\r\n\r\n                } else if (matches($target, '.slbArrow')) {\r\n\r\n                    matches($target, '.next') ? self.next() : self.prev();\r\n\r\n                } else if (self.options.nextOnImageClick && self.items.length > 1 && matches($target, '.slbImage')) {\r\n\r\n                    self.next();\r\n\r\n                }\r\n\r\n            }).addEvent(document, 'keyup', function (e) {\r\n\r\n                self.options.closeOnEscapeKey && e.keyCode === 27 && self.close();\r\n\r\n                if (self.items.length > 1) {\r\n                    (e.keyCode === 39 || e.keyCode === 68) && self.next();\r\n                    (e.keyCode === 37 || e.keyCode === 65) && self.prev();\r\n                }\r\n\r\n            }).addEvent(window, 'resize', function () {\r\n\r\n                self.setImageDimensions();\r\n\r\n            });\r\n\r\n            return this;\r\n\r\n        },\r\n\r\n        close: function () {\r\n\r\n            if (this.modalInDom) {\r\n\r\n                this.runHook('beforeClose');\r\n                this.removeEvents('lightbox');\r\n                this.$el && this.$el.parentNode.removeChild(this.$el);\r\n                removeClass(document.documentElement, this.options.htmlClass);\r\n                this.modalInDom = false;\r\n                this.runHook('afterClose');\r\n\r\n            }\r\n\r\n            this.direction = undefined;\r\n            this.currentPosition = this.options.startAt;\r\n\r\n        },\r\n\r\n        destroy: function () {\r\n\r\n            this.close();\r\n            this.runHook('beforeDestroy');\r\n            this.removeEvents('thumbnails');\r\n            this.runHook('afterDestroy');\r\n\r\n        },\r\n\r\n        runHook: function (name) {\r\n\r\n            this.options[name] && this.options[name](this);\r\n\r\n        }\r\n\r\n    });\r\n\r\n    SimpleLightbox.open = function (options) {\r\n\r\n        var instance = new SimpleLightbox(options);\r\n\r\n        return options.content\r\n            ? instance.setContent(options.content).show()\r\n            : instance.showPosition(instance.options.startAt);\r\n\r\n    };\r\n\r\n    SimpleLightbox.registerAsJqueryPlugin = function ($) {\r\n\r\n        $.fn.simpleLightbox = function (options) {\r\n\r\n            var lightboxInstance;\r\n            var $items = this;\r\n\r\n            return this.each(function () { \r\n                if (!$.data(this, 'simpleLightbox')) {\r\n                    lightboxInstance = lightboxInstance || new SimpleLightbox($.extend({}, options, { $items: $items }));\r\n                    $.data(this, 'simpleLightbox', lightboxInstance);\r\n                }\r\n            });\r\n\r\n        };\r\n\r\n        $.SimpleLightbox = SimpleLightbox;\r\n\r\n    };\r\n\r\n    if (typeof window !== 'undefined' && window.jQuery) {\r\n        SimpleLightbox.registerAsJqueryPlugin(window.jQuery);\r\n    }\r\n\r\n    return SimpleLightbox;\r\n\r\n}));"]}