/*!
	By André Rinas, www.andrerinas.de
	Documentation, www.simplelightbox.de
	Available for use under the MIT License
	Version 2.1.5
*/
"use strict";

function _createForOfIteratorHelper(o) { if (typeof Symbol === "undefined" || o[Symbol.iterator] == null) { if (Array.isArray(o) || (o = _unsupportedIterableToArray(o))) { var i = 0; var F = function F() {}; return { s: F, n: function n() { if (i >= o.length) return { done: true }; return { done: false, value: o[i++] }; }, e: function e(_e) { throw _e; }, f: F }; } throw new TypeError("Invalid attempt to iterate non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); } var it, normalCompletion = true, didErr = false, err; return { s: function s() { it = o[Symbol.iterator](); }, n: function n() { var step = it.next(); normalCompletion = step.done; return step; }, e: function e(_e2) { didErr = true; err = _e2; }, f: function f() { try { if (!normalCompletion && it["return"] != null) it["return"](); } finally { if (didErr) throw err; } } }; }

function _unsupportedIterableToArray(o, minLen) { if (!o) return; if (typeof o === "string") return _arrayLikeToArray(o, minLen); var n = Object.prototype.toString.call(o).slice(8, -1); if (n === "Object" && o.constructor) n = o.constructor.name; if (n === "Map" || n === "Set") return Array.from(n); if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen); }

function _arrayLikeToArray(arr, len) { if (len == null || len > arr.length) len = arr.length; for (var i = 0, arr2 = new Array(len); i < len; i++) { arr2[i] = arr[i]; } return arr2; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }

var SimpleLightbox = /*#__PURE__*/function () {
  function SimpleLightbox(elements, options) {
    var _this = this;

    _classCallCheck(this, SimpleLightbox);

    _defineProperty(this, "defaultOptions", {
      sourceAttr: 'href',
      overlay: true,
      spinner: true,
      nav: true,
      navText: ['&lsaquo;', '&rsaquo;'],
      captions: true,
      captionDelay: 0,
      captionSelector: 'img',
      captionType: 'attr',
      captionsData: 'title',
      captionPosition: 'bottom',
      captionClass: '',
      close: true,
      closeText: '&times;',
      swipeClose: true,
      showCounter: true,
      fileExt: 'png|jpg|jpeg|gif|webp',
      animationSlide: true,
      animationSpeed: 250,
      preloading: true,
      enableKeyboard: true,
      loop: true,
      rel: false,
      docClose: true,
      swipeTolerance: 50,
      className: 'simple-lightbox',
      widthRatio: 0.8,
      heightRatio: 0.9,
      scaleImageToRatio: false,
      disableRightClick: false,
      disableScroll: true,
      alertError: true,
      alertErrorMessage: 'Image not found, next image will be loaded',
      additionalHtml: false,
      history: true,
      throttleInterval: 0,
      doubleTapZoom: 2,
      maxZoom: 10,
      htmlClass: 'has-lightbox',
      rtl: false
    });

    _defineProperty(this, "transitionPrefix", void 0);

    _defineProperty(this, "transitionCapable", false);

    _defineProperty(this, "isTouchDevice", 'ontouchstart' in window);

    _defineProperty(this, "initialLocationHash", void 0);

    _defineProperty(this, "pushStateSupport", 'pushState' in history);

    _defineProperty(this, "isOpen", false);

    _defineProperty(this, "isAnimating", false);

    _defineProperty(this, "isClosing", false);

    _defineProperty(this, "urlChangedOnce", false);

    _defineProperty(this, "hashReseted", false);

    _defineProperty(this, "historyHasChanges", false);

    _defineProperty(this, "historyUpdateTimeout", null);

    _defineProperty(this, "currentImage", void 0);

    _defineProperty(this, "eventNamespace", 'simplelightbox');

    _defineProperty(this, "domNodes", {});

    _defineProperty(this, "loadedImages", []);

    _defineProperty(this, "initialImageIndex", 0);

    _defineProperty(this, "currentImageIndex", 0);

    _defineProperty(this, "initialSelector", null);

    _defineProperty(this, "globalScrollbarWidth", 0);

    _defineProperty(this, "controlCoordinates", {
      swipeDiff: 0,
      swipeYDiff: 0,
      swipeStart: 0,
      swipeEnd: 0,
      swipeYStart: 0,
      swipeYEnd: 0,
      mousedown: false,
      imageLeft: 0,
      zoomed: false,
      containerHeight: 0,
      containerWidth: 0,
      containerOffsetX: 0,
      containerOffsetY: 0,
      imgHeight: 0,
      imgWidth: 0,
      capture: false,
      initialOffsetX: 0,
      initialOffsetY: 0,
      initialPointerOffsetX: 0,
      initialPointerOffsetY: 0,
      initialPointerOffsetX2: 0,
      initialPointerOffsetY2: 0,
      initialScale: 1,
      initialPinchDistance: 0,
      pointerOffsetX: 0,
      pointerOffsetY: 0,
      pointerOffsetX2: 0,
      pointerOffsetY2: 0,
      targetOffsetX: 0,
      targetOffsetY: 0,
      targetScale: 0,
      pinchOffsetX: 0,
      pinchOffsetY: 0,
      limitOffsetX: 0,
      limitOffsetY: 0,
      scaleDifference: 0,
      targetPinchDistance: 0,
      touchCount: 0,
      doubleTapped: false,
      touchmoveCount: 0
    });

    this.options = Object.assign(this.defaultOptions, options);

    if (typeof elements === 'string') {
      this.initialSelector = elements;
      this.elements = Array.from(document.querySelectorAll(elements));
    } else {
      this.elements = typeof elements.length !== 'undefined' && elements.length > 0 ? Array.from(elements) : [elements];
    }

    this.relatedElements = [];
    this.transitionPrefix = this.calculateTransitionPrefix();
    this.transitionCapable = this.transitionPrefix !== false;
    this.initialLocationHash = this.hash; // this should be handled by attribute selector IMHO! => 'a[rel=bla]'...

    if (this.options.rel) {
      this.elements = this.getRelated(this.options.rel);
    }

    this.createDomNodes();

    if (this.options.close) {
      this.domNodes.wrapper.appendChild(this.domNodes.closeButton);
    }

    if (this.options.nav) {
      this.domNodes.wrapper.appendChild(this.domNodes.navigation);
    }

    if (this.options.spinner) {
      this.domNodes.wrapper.appendChild(this.domNodes.spinner);
    }

    this.addEventListener(this.elements, 'click.' + this.eventNamespace, function (event) {
      if (_this.isValidLink(event.currentTarget)) {
        event.preventDefault();

        if (_this.isAnimating) {
          return false;
        }

        _this.initialImageIndex = _this.elements.indexOf(event.currentTarget);

        _this.openImage(event.currentTarget);
      }
    }); // close addEventListener click addEventListener doc

    if (this.options.docClose) {
      this.addEventListener(this.domNodes.overlay, ['click.' + this.eventNamespace, 'touchstart.' + this.eventNamespace], function (event) {
        if (_this.isOpen) {
          _this.close();
        }
      });
    } // disable rightclick


    if (this.options.disableRightClick) {
      this.addEventListener(document.body, 'contextmenu.' + this.eventNamespace, function (event) {
        if (event.target.classList.contains('sl-overlay')) {
          event.preventDefault();
        }
      });
    } // keyboard-control


    if (this.options.enableKeyboard) {
      this.addEventListener(document.body, 'keyup.' + this.eventNamespace, this.throttle(function (event) {
        _this.controlCoordinates.swipeDiff = 0; // keyboard control only if lightbox is open

        if (_this.isAnimating && event.key === 'Escape') {
          _this.currentImage.setAttribute('src', '');

          _this.isAnimating = false;
          return _this.close();
        }

        if (_this.isOpen) {
          event.preventDefault();

          if (event.key === 'Escape') {
            _this.close();
          }

          if (!_this.isAnimating && ['ArrowLeft', 'ArrowRight'].indexOf(event.key) > -1) {
            _this.loadImage(event.key === 'ArrowRight' ? 1 : -1);
          }
        }
      }, this.options.throttleInterval));
    }

    this.addEvents();
  }

  _createClass(SimpleLightbox, [{
    key: "createDomNodes",
    value: function createDomNodes() {
      this.domNodes.overlay = document.createElement('div');
      this.domNodes.overlay.classList.add('sl-overlay');
      this.domNodes.overlay.dataset.opacityTarget = ".7";
      this.domNodes.closeButton = document.createElement('button');
      this.domNodes.closeButton.classList.add('sl-close');
      this.domNodes.closeButton.innerHTML = this.options.closeText;
      this.domNodes.spinner = document.createElement('div');
      this.domNodes.spinner.classList.add('sl-spinner');
      this.domNodes.spinner.innerHTML = '<div></div>';
      this.domNodes.navigation = document.createElement('div');
      this.domNodes.navigation.classList.add('sl-navigation');
      this.domNodes.navigation.innerHTML = "<button class=\"sl-prev\">".concat(this.options.navText[0], "</button><button class=\"sl-next\">").concat(this.options.navText[1], "</button>");
      this.domNodes.counter = document.createElement('div');
      this.domNodes.counter.classList.add('sl-counter');
      this.domNodes.counter.innerHTML = '<span class="sl-current"></span>/<span class="sl-total"></span>';
      this.domNodes.caption = document.createElement('div');
      this.domNodes.caption.classList.add('sl-caption', 'pos-' + this.options.captionPosition);

      if (this.options.captionClass) {
        this.domNodes.caption.classList.add(this.options.captionClass);
      }

      this.domNodes.image = document.createElement('div');
      this.domNodes.image.classList.add('sl-image');
      this.domNodes.wrapper = document.createElement('div');
      this.domNodes.wrapper.classList.add('sl-wrapper');

      if (this.options.className) {
        this.domNodes.wrapper.classList.add(this.options.className);
      }

      if (this.options.rtl) {
        this.domNodes.wrapper.classList.add('sl-dir-rtl');
      }
    }
  }, {
    key: "throttle",
    value: function throttle(func, limit) {
      var inThrottle;
      return function () {
        if (!inThrottle) {
          func.apply(this, arguments);
          inThrottle = true;
          setTimeout(function () {
            return inThrottle = false;
          }, limit);
        }
      };
    }
  }, {
    key: "isValidLink",
    value: function isValidLink(element) {
      return !this.options.fileExt || 'pathname' in element && new RegExp('(' + this.options.fileExt + ')$', 'i').test(element.pathname);
    }
  }, {
    key: "calculateTransitionPrefix",
    value: function calculateTransitionPrefix() {
      var s = (document.body || document.documentElement).style;
      return 'transition' in s ? '' : 'WebkitTransition' in s ? '-webkit-' : 'MozTransition' in s ? '-moz-' : 'OTransition' in s ? '-o' : false;
    }
  }, {
    key: "toggleScrollbar",
    value: function toggleScrollbar(type) {
      var scrollbarWidth = 0;

      if (type === 'hide') {
        var fullWindowWidth = window.innerWidth;

        if (!fullWindowWidth) {
          var documentElementRect = document.documentElement.getBoundingClientRect();
          fullWindowWidth = documentElementRect.right - Math.abs(documentElementRect.left);
        }

        if (document.body.clientWidth < fullWindowWidth) {
          var scrollDiv = document.createElement('div'),
              paddingRight = parseInt(document.body.style.paddingRight || 0, 10);
          scrollDiv.classList.add('sl-scrollbar-measure');
          document.body.appendChild(scrollDiv);
          scrollbarWidth = scrollDiv.offsetWidth - scrollDiv.clientWidth;
          document.body.removeChild(scrollDiv);
          document.body.dataset.originalPaddingRight = paddingRight;

          if (scrollbarWidth > 0) {
            document.body.classList.add('hidden-scroll');
            document.body.style.paddingRight = paddingRight + scrollbarWidth + 'px';
          }
        }
      } else {
        document.body.classList.remove('hidden-scroll');
        document.body.style.paddingRight = document.body.dataset.originalPaddingRight;
      }

      return scrollbarWidth;
    }
  }, {
    key: "close",
    value: function close() {
      var _this2 = this;

      if (!this.isOpen || this.isAnimating || this.isClosing) {
        return false;
      }

      this.isClosing = true;
      var element = this.relatedElements[this.currentImageIndex];
      element.dispatchEvent(new Event('close.simplelightbox'));

      if (this.options.history) {
        this.historyHasChanges = false;

        if (!this.hashReseted) {
          this.resetHash();
        }
      }

      this.fadeOut(document.querySelectorAll('.sl-image img, .sl-overlay, .sl-close, .sl-navigation, .sl-image .sl-caption, .sl-counter'), 300, function () {
        if (_this2.options.disableScroll) {
          _this2.toggleScrollbar('show');
        }

        if (_this2.options.htmlClass && _this2.options.htmlClass !== '') {
          document.querySelector('html').classList.remove(_this2.options.htmlClass);
        }

        document.body.removeChild(_this2.domNodes.wrapper);
        document.body.removeChild(_this2.domNodes.overlay);
        _this2.domNodes.additionalHtml = null;
        element.dispatchEvent(new Event('closed.simplelightbox'));
        _this2.isClosing = false;
      });
      this.currentImage = null;
      this.isOpen = false;
      this.isAnimating = false; // reset touchcontrol coordinates

      for (var key in this.controlCoordinates) {
        this.controlCoordinates[key] = 0;
      }

      this.controlCoordinates.mousedown = false;
      this.controlCoordinates.zoomed = false;
      this.controlCoordinates.capture = false;
      this.controlCoordinates.initialScale = this.minMax(1, 1, this.options.maxZoom);
      this.controlCoordinates.doubleTapped = false;
    }
  }, {
    key: "preload",
    value: function preload() {
      var _this3 = this;

      var index = this.currentImageIndex,
          length = this.relatedElements.length,
          next = index + 1 < 0 ? length - 1 : index + 1 >= length - 1 ? 0 : index + 1,
          prev = index - 1 < 0 ? length - 1 : index - 1 >= length - 1 ? 0 : index - 1,
          nextImage = new Image(),
          prevImage = new Image();
      nextImage.addEventListener('load', function (event) {
        var src = event.target.getAttribute('src');

        if (_this3.loadedImages.indexOf(src) === -1) {
          //is this condition even required... setting multiple times will not change usage...
          _this3.loadedImages.push(src);
        }

        _this3.relatedElements[index].dispatchEvent(new Event('nextImageLoaded.' + _this3.eventNamespace));
      });
      nextImage.setAttribute('src', this.relatedElements[next].getAttribute(this.options.sourceAttr));
      prevImage.addEventListener('load', function (event) {
        var src = event.target.getAttribute('src');

        if (_this3.loadedImages.indexOf(src) === -1) {
          _this3.loadedImages.push(src);
        }

        _this3.relatedElements[index].dispatchEvent(new Event('prevImageLoaded.' + _this3.eventNamespace));
      });
      prevImage.setAttribute('src', this.relatedElements[prev].getAttribute(this.options.sourceAttr));
    }
  }, {
    key: "loadImage",
    value: function loadImage(direction) {
      var _this4 = this;

      var slideDirection = direction;

      if (this.options.rtl) {
        direction = -direction;
      }

      this.relatedElements[this.currentImageIndex].dispatchEvent(new Event('change.' + this.eventNamespace));
      this.relatedElements[this.currentImageIndex].dispatchEvent(new Event((direction === 1 ? 'next' : 'prev') + '.' + this.eventNamespace));
      var newIndex = this.currentImageIndex + direction;

      if (this.isAnimating || (newIndex < 0 || newIndex >= this.relatedElements.length) && this.options.loop === false) {
        return false;
      }

      this.currentImageIndex = newIndex < 0 ? this.relatedElements.length - 1 : newIndex > this.relatedElements.length - 1 ? 0 : newIndex;
      this.domNodes.counter.querySelector('.sl-current').innerHTML = this.currentImageIndex + 1;

      if (this.options.animationSlide) {
        this.slide(this.options.animationSpeed / 1000, -100 * slideDirection - this.controlCoordinates.swipeDiff + 'px');
      }

      this.fadeOut(this.domNodes.image, 300, function () {
        _this4.isAnimating = true;
        setTimeout(function () {
          var element = _this4.relatedElements[_this4.currentImageIndex];

          _this4.currentImage.setAttribute('src', element.getAttribute(_this4.options.sourceAttr));

          if (_this4.loadedImages.indexOf(element.getAttribute(_this4.options.sourceAttr)) === -1) {
            _this4.show(_this4.domNodes.spinner);
          }

          if (_this4.domNodes.image.contains(_this4.domNodes.caption)) {
            _this4.domNodes.image.removeChild(_this4.domNodes.caption);
          }

          _this4.adjustImage(slideDirection);

          if (_this4.options.preloading) _this4.preload();
        }, 100);
      });
    }
  }, {
    key: "adjustImage",
    value: function adjustImage(direction) {
      var _this5 = this;

      if (!this.currentImage) {
        return false;
      }

      var tmpImage = new Image(),
          windowWidth = window.innerWidth * this.options.widthRatio,
          windowHeight = window.innerHeight * this.options.heightRatio;
      tmpImage.setAttribute('src', this.currentImage.getAttribute('src'));
      this.currentImage.dataset.scale = 1;
      this.currentImage.dataset.translateX = 0;
      this.currentImage.dataset.translateY = 0;
      this.zoomPanElement(0, 0, 1);
      tmpImage.addEventListener('error', function (event) {
        _this5.relatedElements[_this5.currentImageIndex].dispatchEvent(new Event('error.' + _this5.eventNamespace));

        _this5.isAnimating = false;
        _this5.isOpen = false;
        _this5.domNodes.spinner.style.display = 'none';
        var dirIsDefined = direction === 1 || direction === -1;

        if (_this5.initialImageIndex === _this5.currentImageIndex && dirIsDefined) {
          return _this5.close();
        }

        if (_this5.options.alertError) {
          alert(_this5.options.alertErrorMessage);
        }

        _this5.loadImage(dirIsDefined ? direction : 1);
      });
      tmpImage.addEventListener('load', function (event) {
        if (typeof direction !== 'undefined') {
          _this5.relatedElements[_this5.currentImageIndex].dispatchEvent(new Event('changed.' + _this5.eventNamespace));

          _this5.relatedElements[_this5.currentImageIndex].dispatchEvent(new Event((direction === 1 ? 'nextDone' : 'prevDone') + '.' + _this5.eventNamespace));
        } // history


        if (_this5.options.history) {
          _this5.updateURL();
        }

        if (_this5.loadedImages.indexOf(_this5.currentImage.getAttribute('src')) === -1) {
          _this5.loadedImages.push(_this5.currentImage.getAttribute('src'));
        }

        var imageWidth = event.target.width,
            imageHeight = event.target.height;

        if (_this5.options.scaleImageToRatio || imageWidth > windowWidth || imageHeight > windowHeight) {
          var ratio = imageWidth / imageHeight > windowWidth / windowHeight ? imageWidth / windowWidth : imageHeight / windowHeight;
          imageWidth /= ratio;
          imageHeight /= ratio;
        }

        _this5.domNodes.image.style.top = (window.innerHeight - imageHeight) / 2 + 'px';
        _this5.domNodes.image.style.left = (window.innerWidth - imageWidth - _this5.globalScrollbarWidth) / 2 + 'px';
        _this5.domNodes.image.style.width = imageWidth + 'px';
        _this5.domNodes.image.style.height = imageHeight + 'px';
        _this5.domNodes.spinner.style.display = 'none';

        _this5.fadeIn(_this5.currentImage, 300);

        _this5.isOpen = true;
        var captionContainer = _this5.options.captionSelector === 'self' ? _this5.relatedElements[_this5.currentImageIndex] : _this5.relatedElements[_this5.currentImageIndex].querySelector(_this5.options.captionSelector),
            captionText;

        if (_this5.options.captions && captionContainer) {
          if (_this5.options.captionType === 'data') {
            captionText = captionContainer.dataset[_this5.options.captionsData];
          } else if (_this5.options.captionType === 'text') {
            captionText = captionContainer.innerHTML;
          } else {
            captionText = captionContainer.getAttribute(_this5.options.captionsData);
          }
        }

        if (!_this5.options.loop) {
          if (_this5.currentImageIndex === 0) {
            _this5.hide(_this5.domNodes.navigation.querySelector('.sl-prev'));
          }

          if (_this5.currentImageIndex >= _this5.relatedElements.length - 1) {
            _this5.hide(_this5.domNodes.navigation.querySelector('.sl-next'));
          }

          if (_this5.currentImageIndex > 0) {
            _this5.show(_this5.domNodes.navigation.querySelector('.sl-prev'));
          }

          if (_this5.currentImageIndex < _this5.relatedElements.length - 1) {
            _this5.show(_this5.domNodes.navigation.querySelector('.sl-next'));
          }
        }

        if (_this5.relatedElements.length === 1) {
          _this5.hide(_this5.domNodes.navigation.querySelectorAll('.sl-prev, .sl-next'));
        } else {
          _this5.show(_this5.domNodes.navigation.querySelectorAll('.sl-prev, .sl-next'));
        }

        if (direction === 1 || direction === -1) {
          if (_this5.options.animationSlide) {
            _this5.slide(0, 100 * direction + 'px');

            setTimeout(function () {
              _this5.slide(_this5.options.animationSpeed / 1000, 0 + 'px');
            }, 50);
          }

          _this5.fadeIn(_this5.domNodes.image, 300, function () {
            _this5.isAnimating = false;

            _this5.setCaption(captionText, imageWidth);
          });
        } else {
          _this5.isAnimating = false;

          _this5.setCaption(captionText, imageWidth);
        }

        if (_this5.options.additionalHtml && !_this5.domNodes.additionalHtml) {
          _this5.domNodes.additionalHtml = document.createElement('div');

          _this5.domNodes.additionalHtml.classList.add('sl-additional-html');

          _this5.domNodes.additionalHtml.innerHTML = _this5.options.additionalHtml;

          _this5.domNodes.image.appendChild(_this5.domNodes.additionalHtml);
        }
      });
    }
  }, {
    key: "zoomPanElement",
    value: function zoomPanElement(targetOffsetX, targetOffsetY, targetScale) {
      this.currentImage.style[this.transitionPrefix + 'transform'] = 'translate(' + targetOffsetX + ',' + targetOffsetY + ') scale(' + targetScale + ')';
    }
  }, {
    key: "minMax",
    value: function minMax(value, min, max) {
      return value < min ? min : value > max ? max : value;
    }
  }, {
    key: "setZoomData",
    value: function setZoomData(initialScale, targetOffsetX, targetOffsetY) {
      this.currentImage.dataset.scale = initialScale;
      this.currentImage.dataset.translateX = targetOffsetX;
      this.currentImage.dataset.translateY = targetOffsetY;
    }
  }, {
    key: "hashchangeHandler",
    value: function hashchangeHandler() {
      if (this.isOpen && this.hash === this.initialLocationHash) {
        this.hashReseted = true;
        this.close();
      }
    }
  }, {
    key: "addEvents",
    value: function addEvents() {
      var _this6 = this;

      // resize/responsive
      this.addEventListener(window, 'resize.' + this.eventNamespace, function (event) {
        //this.adjustImage.bind(this)
        if (_this6.isOpen) {
          _this6.adjustImage();
        }
      });
      this.addEventListener(this.domNodes.closeButton, ['click.' + this.eventNamespace, 'touchstart.' + this.eventNamespace], this.close.bind(this));

      if (this.options.history) {
        setTimeout(function () {
          _this6.addEventListener(window, 'hashchange.' + _this6.eventNamespace, function (event) {
            if (_this6.isOpen) {
              _this6.hashchangeHandler();
            }
          });
        }, 40);
      }

      this.addEventListener(this.domNodes.navigation.getElementsByTagName('button'), 'click.' + this.eventNamespace, function (event) {
        if (!event.currentTarget.tagName.match(/button/i)) {
          return true;
        }

        event.preventDefault();
        _this6.controlCoordinates.swipeDiff = 0;

        _this6.loadImage(event.currentTarget.classList.contains('sl-next') ? 1 : -1);
      });
      this.addEventListener(this.domNodes.image, ['touchstart.' + this.eventNamespace, 'mousedown.' + this.eventNamespace], function (event) {
        if (event.target.tagName === 'A' && event.type === 'touchstart') {
          return true;
        }

        if (event.type === 'mousedown') {
          _this6.controlCoordinates.initialPointerOffsetX = event.clientX;
          _this6.controlCoordinates.initialPointerOffsetY = event.clientY;
          _this6.controlCoordinates.containerHeight = _this6.getDimensions(_this6.domNodes.image).height;
          _this6.controlCoordinates.containerWidth = _this6.getDimensions(_this6.domNodes.image).width;
          _this6.controlCoordinates.imgHeight = _this6.getDimensions(_this6.currentImage).height;
          _this6.controlCoordinates.imgWidth = _this6.getDimensions(_this6.currentImage).width;
          _this6.controlCoordinates.containerOffsetX = _this6.domNodes.image.offsetLeft;
          _this6.controlCoordinates.containerOffsetY = _this6.domNodes.image.offsetTop;
          _this6.controlCoordinates.initialOffsetX = parseFloat(_this6.currentImage.dataset.translateX);
          _this6.controlCoordinates.initialOffsetY = parseFloat(_this6.currentImage.dataset.translateY);
          _this6.controlCoordinates.capture = true;
        } else {
          _this6.controlCoordinates.touchCount = event.touches.length;
          _this6.controlCoordinates.initialPointerOffsetX = event.touches[0].clientX;
          _this6.controlCoordinates.initialPointerOffsetY = event.touches[0].clientY;
          _this6.controlCoordinates.containerHeight = _this6.getDimensions(_this6.domNodes.image).height;
          _this6.controlCoordinates.containerWidth = _this6.getDimensions(_this6.domNodes.image).width;
          _this6.controlCoordinates.imgHeight = _this6.getDimensions(_this6.currentImage).height;
          _this6.controlCoordinates.imgWidth = _this6.getDimensions(_this6.currentImage).width;
          _this6.controlCoordinates.containerOffsetX = _this6.domNodes.image.offsetLeft;
          _this6.controlCoordinates.containerOffsetY = _this6.domNodes.image.offsetTop;

          if (_this6.controlCoordinates.touchCount === 1)
            /* Single touch */
            {
              if (!_this6.controlCoordinates.doubleTapped) {
                _this6.controlCoordinates.doubleTapped = true;
                setTimeout(function () {
                  _this6.controlCoordinates.doubleTapped = false;
                }, 300);
              } else {
                _this6.currentImage.classList.add('sl-transition');

                if (!_this6.controlCoordinates.zoomed) {
                  _this6.controlCoordinates.initialScale = _this6.options.doubleTapZoom;

                  _this6.setZoomData(_this6.controlCoordinates.initialScale, 0, 0);

                  _this6.zoomPanElement(0 + "px", 0 + "px", _this6.controlCoordinates.initialScale);

                  if (!_this6.domNodes.caption.style.opacity && _this6.domNodes.caption.style.display !== 'none') {
                    _this6.fadeOut(_this6.domNodes.caption, 200);
                  }

                  _this6.controlCoordinates.zoomed = true;
                } else {
                  _this6.controlCoordinates.initialScale = 1;

                  _this6.setZoomData(_this6.controlCoordinates.initialScale, 0, 0);

                  _this6.zoomPanElement(0 + "px", 0 + "px", _this6.controlCoordinates.initialScale);

                  _this6.controlCoordinates.zoomed = false;
                }

                setTimeout(function () {
                  if (_this6.currentImage) {
                    _this6.currentImage.classList.remove('sl-transition');
                  }
                }, 200);
                return false;
              }

              _this6.controlCoordinates.initialOffsetX = parseFloat(_this6.currentImage.dataset.translateX);
              _this6.controlCoordinates.initialOffsetY = parseFloat(_this6.currentImage.dataset.translateY);
            } else if (_this6.controlCoordinates.touchCount === 2)
            /* Pinch */
            {
              _this6.controlCoordinates.initialPointerOffsetX2 = event.touches[1].clientX;
              _this6.controlCoordinates.initialPointerOffsetY2 = event.touches[1].clientY;
              _this6.controlCoordinates.initialOffsetX = parseFloat(_this6.currentImage.dataset.translateX);
              _this6.controlCoordinates.initialOffsetY = parseFloat(_this6.currentImage.dataset.translateY);
              _this6.controlCoordinates.pinchOffsetX = (_this6.controlCoordinates.initialPointerOffsetX + _this6.controlCoordinates.initialPointerOffsetX2) / 2;
              _this6.controlCoordinates.pinchOffsetY = (_this6.controlCoordinates.initialPointerOffsetY + _this6.controlCoordinates.initialPointerOffsetY2) / 2;
              _this6.controlCoordinates.initialPinchDistance = Math.sqrt((_this6.controlCoordinates.initialPointerOffsetX - _this6.controlCoordinates.initialPointerOffsetX2) * (_this6.controlCoordinates.initialPointerOffsetX - _this6.controlCoordinates.initialPointerOffsetX2) + (_this6.controlCoordinates.initialPointerOffsetY - _this6.controlCoordinates.initialPointerOffsetY2) * (_this6.controlCoordinates.initialPointerOffsetY - _this6.controlCoordinates.initialPointerOffsetY2));
            }

          _this6.controlCoordinates.capture = true;
        }

        if (_this6.controlCoordinates.mousedown) return true;

        if (_this6.transitionCapable) {
          _this6.controlCoordinates.imageLeft = parseInt(_this6.domNodes.image.style.left, 10);
        }

        _this6.controlCoordinates.mousedown = true;
        _this6.controlCoordinates.swipeDiff = 0;
        _this6.controlCoordinates.swipeYDiff = 0;
        _this6.controlCoordinates.swipeStart = event.pageX || event.touches[0].pageX;
        _this6.controlCoordinates.swipeYStart = event.pageY || event.touches[0].pageY;
        return false;
      });
      this.addEventListener(this.domNodes.image, ['touchmove.' + this.eventNamespace, 'mousemove.' + this.eventNamespace, 'MSPointerMove'], function (event) {
        if (!_this6.controlCoordinates.mousedown) {
          return true;
        }

        event.preventDefault();

        if (event.type === 'touchmove') {
          if (_this6.controlCoordinates.capture === false) {
            return false;
          }

          _this6.controlCoordinates.pointerOffsetX = event.touches[0].clientX;
          _this6.controlCoordinates.pointerOffsetY = event.touches[0].clientY;
          _this6.controlCoordinates.touchCount = event.touches.length;
          _this6.controlCoordinates.touchmoveCount++;

          if (_this6.controlCoordinates.touchCount > 1)
            /* Pinch */
            {
              _this6.controlCoordinates.pointerOffsetX2 = event.touches[1].clientX;
              _this6.controlCoordinates.pointerOffsetY2 = event.touches[1].clientY;
              _this6.controlCoordinates.targetPinchDistance = Math.sqrt((_this6.controlCoordinates.pointerOffsetX - _this6.controlCoordinates.pointerOffsetX2) * (_this6.controlCoordinates.pointerOffsetX - _this6.controlCoordinates.pointerOffsetX2) + (_this6.controlCoordinates.pointerOffsetY - _this6.controlCoordinates.pointerOffsetY2) * (_this6.controlCoordinates.pointerOffsetY - _this6.controlCoordinates.pointerOffsetY2));

              if (_this6.controlCoordinates.initialPinchDistance === null) {
                _this6.controlCoordinates.initialPinchDistance = _this6.controlCoordinates.targetPinchDistance;
              }

              if (Math.abs(_this6.controlCoordinates.initialPinchDistance - _this6.controlCoordinates.targetPinchDistance) >= 1) {
                /* Initialize helpers */
                _this6.controlCoordinates.targetScale = _this6.minMax(_this6.controlCoordinates.targetPinchDistance / _this6.controlCoordinates.initialPinchDistance * _this6.controlCoordinates.initialScale, 1, _this6.options.maxZoom);
                _this6.controlCoordinates.limitOffsetX = (_this6.controlCoordinates.imgWidth * _this6.controlCoordinates.targetScale - _this6.controlCoordinates.containerWidth) / 2;
                _this6.controlCoordinates.limitOffsetY = (_this6.controlCoordinates.imgHeight * _this6.controlCoordinates.targetScale - _this6.controlCoordinates.containerHeight) / 2;
                _this6.controlCoordinates.scaleDifference = _this6.controlCoordinates.targetScale - _this6.controlCoordinates.initialScale;
                _this6.controlCoordinates.targetOffsetX = _this6.controlCoordinates.imgWidth * _this6.controlCoordinates.targetScale <= _this6.controlCoordinates.containerWidth ? 0 : _this6.minMax(_this6.controlCoordinates.initialOffsetX - (_this6.controlCoordinates.pinchOffsetX - _this6.controlCoordinates.containerOffsetX - _this6.controlCoordinates.containerWidth / 2 - _this6.controlCoordinates.initialOffsetX) / (_this6.controlCoordinates.targetScale - _this6.controlCoordinates.scaleDifference) * _this6.controlCoordinates.scaleDifference, _this6.controlCoordinates.limitOffsetX * -1, _this6.controlCoordinates.limitOffsetX);
                _this6.controlCoordinates.targetOffsetY = _this6.controlCoordinates.imgHeight * _this6.controlCoordinates.targetScale <= _this6.controlCoordinates.containerHeight ? 0 : _this6.minMax(_this6.controlCoordinates.initialOffsetY - (_this6.controlCoordinates.pinchOffsetY - _this6.controlCoordinates.containerOffsetY - _this6.controlCoordinates.containerHeight / 2 - _this6.controlCoordinates.initialOffsetY) / (_this6.controlCoordinates.targetScale - _this6.controlCoordinates.scaleDifference) * _this6.controlCoordinates.scaleDifference, _this6.controlCoordinates.limitOffsetY * -1, _this6.controlCoordinates.limitOffsetY);

                _this6.zoomPanElement(_this6.controlCoordinates.targetOffsetX + "px", _this6.controlCoordinates.targetOffsetY + "px", _this6.controlCoordinates.targetScale);

                if (_this6.controlCoordinates.targetScale > 1) {
                  _this6.controlCoordinates.zoomed = true;

                  if (!_this6.domNodes.caption.style.opacity && _this6.domNodes.caption.style.display !== 'none') {
                    _this6.fadeOut(_this6.domNodes.caption, 200);
                  }
                }

                _this6.controlCoordinates.initialPinchDistance = _this6.controlCoordinates.targetPinchDistance;
                _this6.controlCoordinates.initialScale = _this6.controlCoordinates.targetScale;
                _this6.controlCoordinates.initialOffsetX = _this6.controlCoordinates.targetOffsetX;
                _this6.controlCoordinates.initialOffsetY = _this6.controlCoordinates.targetOffsetY;
              }
            } else {
            _this6.controlCoordinates.targetScale = _this6.controlCoordinates.initialScale;
            _this6.controlCoordinates.limitOffsetX = (_this6.controlCoordinates.imgWidth * _this6.controlCoordinates.targetScale - _this6.controlCoordinates.containerWidth) / 2;
            _this6.controlCoordinates.limitOffsetY = (_this6.controlCoordinates.imgHeight * _this6.controlCoordinates.targetScale - _this6.controlCoordinates.containerHeight) / 2;
            _this6.controlCoordinates.targetOffsetX = _this6.controlCoordinates.imgWidth * _this6.controlCoordinates.targetScale <= _this6.controlCoordinates.containerWidth ? 0 : _this6.minMax(_this6.controlCoordinates.pointerOffsetX - (_this6.controlCoordinates.initialPointerOffsetX - _this6.controlCoordinates.initialOffsetX), _this6.controlCoordinates.limitOffsetX * -1, _this6.controlCoordinates.limitOffsetX);
            _this6.controlCoordinates.targetOffsetY = _this6.controlCoordinates.imgHeight * _this6.controlCoordinates.targetScale <= _this6.controlCoordinates.containerHeight ? 0 : _this6.minMax(_this6.controlCoordinates.pointerOffsetY - (_this6.controlCoordinates.initialPointerOffsetY - _this6.controlCoordinates.initialOffsetY), _this6.controlCoordinates.limitOffsetY * -1, _this6.controlCoordinates.limitOffsetY);

            if (Math.abs(_this6.controlCoordinates.targetOffsetX) === Math.abs(_this6.controlCoordinates.limitOffsetX)) {
              _this6.controlCoordinates.initialOffsetX = _this6.controlCoordinates.targetOffsetX;
              _this6.controlCoordinates.initialPointerOffsetX = _this6.controlCoordinates.pointerOffsetX;
            }

            if (Math.abs(_this6.controlCoordinates.targetOffsetY) === Math.abs(_this6.controlCoordinates.limitOffsetY)) {
              _this6.controlCoordinates.initialOffsetY = _this6.controlCoordinates.targetOffsetY;
              _this6.controlCoordinates.initialPointerOffsetY = _this6.controlCoordinates.pointerOffsetY;
            }

            _this6.setZoomData(_this6.controlCoordinates.initialScale, _this6.controlCoordinates.targetOffsetX, _this6.controlCoordinates.targetOffsetY);

            _this6.zoomPanElement(_this6.controlCoordinates.targetOffsetX + "px", _this6.controlCoordinates.targetOffsetY + "px", _this6.controlCoordinates.targetScale);
          }
        }
        /* Mouse Move implementation */


        if (event.type === 'mousemove' && _this6.controlCoordinates.mousedown) {
          if (event.type == 'touchmove') return true;
          if (_this6.controlCoordinates.capture === false) return false;
          _this6.controlCoordinates.pointerOffsetX = event.clientX;
          _this6.controlCoordinates.pointerOffsetY = event.clientY;
          _this6.controlCoordinates.targetScale = _this6.controlCoordinates.initialScale;
          _this6.controlCoordinates.limitOffsetX = (_this6.controlCoordinates.imgWidth * _this6.controlCoordinates.targetScale - _this6.controlCoordinates.containerWidth) / 2;
          _this6.controlCoordinates.limitOffsetY = (_this6.controlCoordinates.imgHeight * _this6.controlCoordinates.targetScale - _this6.controlCoordinates.containerHeight) / 2;
          _this6.controlCoordinates.targetOffsetX = _this6.controlCoordinates.imgWidth * _this6.controlCoordinates.targetScale <= _this6.controlCoordinates.containerWidth ? 0 : _this6.minMax(_this6.controlCoordinates.pointerOffsetX - (_this6.controlCoordinates.initialPointerOffsetX - _this6.controlCoordinates.initialOffsetX), _this6.controlCoordinates.limitOffsetX * -1, _this6.controlCoordinates.limitOffsetX);
          _this6.controlCoordinates.targetOffsetY = _this6.controlCoordinates.imgHeight * _this6.controlCoordinates.targetScale <= _this6.controlCoordinates.containerHeight ? 0 : _this6.minMax(_this6.controlCoordinates.pointerOffsetY - (_this6.controlCoordinates.initialPointerOffsetY - _this6.controlCoordinates.initialOffsetY), _this6.controlCoordinates.limitOffsetY * -1, _this6.controlCoordinates.limitOffsetY);

          if (Math.abs(_this6.controlCoordinates.targetOffsetX) === Math.abs(_this6.controlCoordinates.limitOffsetX)) {
            _this6.controlCoordinates.initialOffsetX = _this6.controlCoordinates.targetOffsetX;
            _this6.controlCoordinates.initialPointerOffsetX = _this6.controlCoordinates.pointerOffsetX;
          }

          if (Math.abs(_this6.controlCoordinates.targetOffsetY) === Math.abs(_this6.controlCoordinates.limitOffsetY)) {
            _this6.controlCoordinates.initialOffsetY = _this6.controlCoordinates.targetOffsetY;
            _this6.controlCoordinates.initialPointerOffsetY = _this6.controlCoordinates.pointerOffsetY;
          }

          _this6.setZoomData(_this6.controlCoordinates.initialScale, _this6.controlCoordinates.targetOffsetX, _this6.controlCoordinates.targetOffsetY);

          _this6.zoomPanElement(_this6.controlCoordinates.targetOffsetX + "px", _this6.controlCoordinates.targetOffsetY + "px", _this6.controlCoordinates.targetScale);
        }

        if (!_this6.controlCoordinates.zoomed) {
          _this6.controlCoordinates.swipeEnd = event.pageX || event.touches[0].pageX;
          _this6.controlCoordinates.swipeYEnd = event.pageY || event.touches[0].pageY;
          _this6.controlCoordinates.swipeDiff = _this6.controlCoordinates.swipeStart - _this6.controlCoordinates.swipeEnd;
          _this6.controlCoordinates.swipeYDiff = _this6.controlCoordinates.swipeYStart - _this6.controlCoordinates.swipeYEnd;

          if (_this6.options.animationSlide) {
            _this6.slide(0, -_this6.controlCoordinates.swipeDiff + 'px');
          }
        }
      });
      this.addEventListener(this.domNodes.image, ['touchend.' + this.eventNamespace, 'mouseup.' + this.eventNamespace, 'touchcancel.' + this.eventNamespace, 'mouseleave.' + this.eventNamespace, 'pointerup', 'pointercancel', 'MSPointerUp', 'MSPointerCancel'], function (event) {
        if (_this6.isTouchDevice && event.type === 'touchend') {
          _this6.controlCoordinates.touchCount = event.touches.length;

          if (_this6.controlCoordinates.touchCount === 0)
            /* No touch */
            {
              /* Set attributes */
              _this6.setZoomData(_this6.controlCoordinates.initialScale, _this6.controlCoordinates.targetOffsetX, _this6.controlCoordinates.targetOffsetY);

              if (_this6.controlCoordinates.initialScale === 1) {
                _this6.controlCoordinates.zoomed = false;

                if (_this6.domNodes.caption.style.display === 'none') {
                  _this6.fadeIn(_this6.domNodes.caption, 200);
                }
              }

              _this6.controlCoordinates.initialPinchDistance = null;
              _this6.controlCoordinates.capture = false;
            } else if (_this6.controlCoordinates.touchCount === 1)
            /* Single touch */
            {
              _this6.controlCoordinates.initialPointerOffsetX = event.touches[0].clientX;
              _this6.controlCoordinates.initialPointerOffsetY = event.touches[0].clientY;
            } else if (_this6.controlCoordinates.touchCount > 1)
            /* Pinch */
            {
              _this6.controlCoordinates.initialPinchDistance = null;
            }
        }

        if (_this6.controlCoordinates.mousedown) {
          _this6.controlCoordinates.mousedown = false;
          var possibleDir = true;

          if (!_this6.options.loop) {
            if (_this6.currentImageIndex === 0 && _this6.controlCoordinates.swipeDiff < 0) {
              possibleDir = false;
            }

            if (_this6.currentImageIndex >= _this6.relatedElements.length - 1 && _this6.controlCoordinates.swipeDiff > 0) {
              possibleDir = false;
            }
          }

          if (Math.abs(_this6.controlCoordinates.swipeDiff) > _this6.options.swipeTolerance && possibleDir) {
            _this6.loadImage(_this6.controlCoordinates.swipeDiff > 0 ? 1 : -1);
          } else if (_this6.options.animationSlide) {
            _this6.slide(_this6.options.animationSpeed / 1000, 0 + 'px');
          }

          if (_this6.options.swipeClose && Math.abs(_this6.controlCoordinates.swipeYDiff) > 50 && Math.abs(_this6.controlCoordinates.swipeDiff) < _this6.options.swipeTolerance) {
            _this6.close();
          }
        }
      });
      this.addEventListener(this.domNodes.image, ['dblclick'], function (event) {
        if (_this6.isTouchDevice) return;
        _this6.controlCoordinates.initialPointerOffsetX = event.clientX;
        _this6.controlCoordinates.initialPointerOffsetY = event.clientY;
        _this6.controlCoordinates.containerHeight = _this6.getDimensions(_this6.domNodes.image).height;
        _this6.controlCoordinates.containerWidth = _this6.getDimensions(_this6.domNodes.image).width;
        _this6.controlCoordinates.imgHeight = _this6.getDimensions(_this6.currentImage).height;
        _this6.controlCoordinates.imgWidth = _this6.getDimensions(_this6.currentImage).width;
        _this6.controlCoordinates.containerOffsetX = _this6.domNodes.image.offsetLeft;
        _this6.controlCoordinates.containerOffsetY = _this6.domNodes.image.offsetTop;

        _this6.currentImage.classList.add('sl-transition');

        if (!_this6.controlCoordinates.zoomed) {
          _this6.controlCoordinates.initialScale = _this6.options.doubleTapZoom;

          _this6.setZoomData(_this6.controlCoordinates.initialScale, 0, 0);

          _this6.zoomPanElement(0 + "px", 0 + "px", _this6.controlCoordinates.initialScale);

          if (!_this6.domNodes.caption.style.opacity && _this6.domNodes.caption.style.display !== 'none') {
            _this6.fadeOut(_this6.domNodes.caption, 200);
          }

          _this6.controlCoordinates.zoomed = true;
        } else {
          _this6.controlCoordinates.initialScale = 1;

          _this6.setZoomData(_this6.controlCoordinates.initialScale, 0, 0);

          _this6.zoomPanElement(0 + "px", 0 + "px", _this6.controlCoordinates.initialScale);

          _this6.controlCoordinates.zoomed = false;

          if (_this6.domNodes.caption.style.display === 'none') {
            _this6.fadeIn(_this6.domNodes.caption, 200);
          }
        }

        setTimeout(function () {
          if (_this6.currentImage) {
            _this6.currentImage.classList.remove('sl-transition');
          }
        }, 200);
        _this6.controlCoordinates.capture = true;
        return false;
      });
    }
  }, {
    key: "getDimensions",
    value: function getDimensions(element) {
      var styles = window.getComputedStyle(element),
          height = element.offsetHeight,
          width = element.offsetWidth,
          borderTopWidth = parseFloat(styles.borderTopWidth),
          borderBottomWidth = parseFloat(styles.borderBottomWidth),
          paddingTop = parseFloat(styles.paddingTop),
          paddingBottom = parseFloat(styles.paddingBottom),
          borderLeftWidth = parseFloat(styles.borderLeftWidth),
          borderRightWidth = parseFloat(styles.borderRightWidth),
          paddingLeft = parseFloat(styles.paddingLeft),
          paddingRight = parseFloat(styles.paddingRight);
      return {
        height: height - borderBottomWidth - borderTopWidth - paddingTop - paddingBottom,
        width: width - borderLeftWidth - borderRightWidth - paddingLeft - paddingRight
      };
    }
  }, {
    key: "updateHash",
    value: function updateHash() {
      var newHash = 'pid=' + (this.currentImageIndex + 1),
          newURL = window.location.href.split('#')[0] + '#' + newHash;
      this.hashReseted = false;

      if (this.pushStateSupport) {
        window.history[this.historyHasChanges ? 'replaceState' : 'pushState']('', document.title, newURL);
      } else {
        // what is the browser target of this?
        if (this.historyHasChanges) {
          window.location.replace(newURL);
        } else {
          window.location.hash = newHash;
        }
      }

      if (!this.historyHasChanges) {
        this.urlChangedOnce = true;
      }

      this.historyHasChanges = true;
    }
  }, {
    key: "resetHash",
    value: function resetHash() {
      this.hashReseted = true;

      if (this.urlChangedOnce) {
        history.back();
      } else {
        if (this.pushStateSupport) {
          history.pushState('', document.title, window.location.pathname + window.location.search);
        } else {
          window.location.hash = '';
        }
      } //
      //in case an history operation is still pending


      clearTimeout(this.historyUpdateTimeout);
    }
  }, {
    key: "updateURL",
    value: function updateURL() {
      clearTimeout(this.historyUpdateTimeout);

      if (!this.historyHasChanges) {
        this.updateHash(); // first time
      } else {
        this.historyUpdateTimeout = setTimeout(this.updateHash.bind(this), 800);
      }
    }
  }, {
    key: "setCaption",
    value: function setCaption(captionText, imageWidth) {
      var _this7 = this;

      if (this.options.captions && captionText && captionText !== '' && typeof captionText !== "undefined") {
        this.hide(this.domNodes.caption);
        this.domNodes.caption.style.width = imageWidth + 'px';
        this.domNodes.caption.innerHTML = captionText;
        this.domNodes.image.appendChild(this.domNodes.caption);
        setTimeout(function () {
          _this7.fadeIn(_this7.domNodes.caption, 300);
        }, this.options.captionDelay);
      }
    }
  }, {
    key: "slide",
    value: function slide(speed, pos) {
      if (!this.transitionCapable) {
        return this.domNodes.image.style.left = pos;
      }

      this.domNodes.image.style[this.transitionPrefix + 'transform'] = 'translateX(' + pos + ')';
      this.domNodes.image.style[this.transitionPrefix + 'transition'] = this.transitionPrefix + 'transform ' + speed + 's linear';
    }
  }, {
    key: "getRelated",
    value: function getRelated(rel) {
      var elems;

      if (rel && rel !== false && rel !== 'nofollow') {
        elems = Array.from(this.elements).filter(function (element) {
          return element.getAttribute('rel') === rel;
        });
      } else {
        elems = this.elements;
      }

      return elems;
    }
  }, {
    key: "openImage",
    value: function openImage(element) {
      var _this8 = this;

      element.dispatchEvent(new Event('show.' + this.eventNamespace));

      if (this.options.disableScroll) {
        this.globalScrollbarWidth = this.toggleScrollbar('hide');
      }

      if (this.options.htmlClass && this.options.htmlClass !== '') {
        document.querySelector('html').classList.add(this.options.htmlClass);
      }

      document.body.appendChild(this.domNodes.wrapper);
      this.domNodes.wrapper.appendChild(this.domNodes.image);

      if (this.options.overlay) {
        document.body.appendChild(this.domNodes.overlay);
      }

      this.relatedElements = this.getRelated(element.rel);

      if (this.options.showCounter) {
        if (this.relatedElements.length == 1 && this.domNodes.wrapper.contains(this.domNodes.counter)) {
          this.domNodes.wrapper.removeChild(this.domNodes.counter);
        } else if (this.relatedElements.length > 1 && !this.domNodes.wrapper.contains(this.domNodes.counter)) {
          this.domNodes.wrapper.appendChild(this.domNodes.counter);
        }
      }

      this.isAnimating = true;
      this.currentImageIndex = this.relatedElements.indexOf(element);
      var targetURL = element.getAttribute(this.options.sourceAttr);
      this.currentImage = document.createElement('img');
      this.currentImage.style.display = 'none';
      this.currentImage.setAttribute('src', targetURL);
      this.currentImage.dataset.scale = 1;
      this.currentImage.dataset.translateX = 0;
      this.currentImage.dataset.translateY = 0;

      if (this.loadedImages.indexOf(targetURL) === -1) {
        this.loadedImages.push(targetURL);
      }

      this.domNodes.image.innerHTML = '';
      this.domNodes.image.setAttribute('style', '');
      this.domNodes.image.appendChild(this.currentImage);
      this.fadeIn(this.domNodes.overlay, 300);
      this.fadeIn([this.domNodes.counter, this.domNodes.navigation, this.domNodes.closeButton], 300);
      this.show(this.domNodes.spinner);
      this.domNodes.counter.querySelector('.sl-current').innerHTML = this.currentImageIndex + 1;
      this.domNodes.counter.querySelector('.sl-total').innerHTML = this.relatedElements.length;
      this.adjustImage();

      if (this.options.preloading) {
        this.preload();
      }

      setTimeout(function () {
        element.dispatchEvent(new Event('shown.' + _this8.eventNamespace));
      }, this.options.animationSpeed);
    } // utility

  }, {
    key: "addEventListener",
    value: function addEventListener(elements, events, callback, opts) {
      elements = this.wrap(elements);
      events = this.wrap(events);

      var _iterator = _createForOfIteratorHelper(elements),
          _step;

      try {
        for (_iterator.s(); !(_step = _iterator.n()).done;) {
          var element = _step.value;

          if (!element.namespaces) {
            element.namespaces = {};
          } // save the namespaces addEventListener the DOM element itself


          var _iterator2 = _createForOfIteratorHelper(events),
              _step2;

          try {
            for (_iterator2.s(); !(_step2 = _iterator2.n()).done;) {
              var event = _step2.value;
              var options = opts || false;
              element.namespaces[event] = callback;
              element.addEventListener(event.split('.')[0], callback, options);
            }
          } catch (err) {
            _iterator2.e(err);
          } finally {
            _iterator2.f();
          }
        }
      } catch (err) {
        _iterator.e(err);
      } finally {
        _iterator.f();
      }
    }
  }, {
    key: "removeEventListener",
    value: function removeEventListener(elements, events) {
      elements = this.wrap(elements);
      events = this.wrap(events);

      var _iterator3 = _createForOfIteratorHelper(elements),
          _step3;

      try {
        for (_iterator3.s(); !(_step3 = _iterator3.n()).done;) {
          var element = _step3.value;

          var _iterator4 = _createForOfIteratorHelper(events),
              _step4;

          try {
            for (_iterator4.s(); !(_step4 = _iterator4.n()).done;) {
              var event = _step4.value;
              element.removeEventListener(event.split('.')[0], element.namespaces[event]);
              delete element.namespaces[event];
            }
          } catch (err) {
            _iterator4.e(err);
          } finally {
            _iterator4.f();
          }
        }
      } catch (err) {
        _iterator3.e(err);
      } finally {
        _iterator3.f();
      }
    }
  }, {
    key: "fadeOut",
    value: function fadeOut(elements, duration, callback) {
      var _this9 = this;

      elements = this.wrap(elements);

      var _iterator5 = _createForOfIteratorHelper(elements),
          _step5;

      try {
        for (_iterator5.s(); !(_step5 = _iterator5.n()).done;) {
          var element = _step5.value;
          element.style.opacity = 1;
        }
      } catch (err) {
        _iterator5.e(err);
      } finally {
        _iterator5.f();
      }

      var step = 16.66666 / (duration || 300),
          fade = function fade() {
        var currentOpacity = parseFloat(elements[0].style.opacity);

        if ((currentOpacity -= step) < 0) {
          var _iterator6 = _createForOfIteratorHelper(elements),
              _step6;

          try {
            for (_iterator6.s(); !(_step6 = _iterator6.n()).done;) {
              var element = _step6.value;
              element.style.display = "none";
              element.style.opacity = '';
            }
          } catch (err) {
            _iterator6.e(err);
          } finally {
            _iterator6.f();
          }

          callback && callback.call(_this9, elements);
        } else {
          var _iterator7 = _createForOfIteratorHelper(elements),
              _step7;

          try {
            for (_iterator7.s(); !(_step7 = _iterator7.n()).done;) {
              var _element = _step7.value;
              _element.style.opacity = currentOpacity;
            }
          } catch (err) {
            _iterator7.e(err);
          } finally {
            _iterator7.f();
          }

          requestAnimationFrame(fade);
        }
      };

      fade();
    }
  }, {
    key: "fadeIn",
    value: function fadeIn(elements, duration, callback, display) {
      var _this10 = this;

      elements = this.wrap(elements);

      var _iterator8 = _createForOfIteratorHelper(elements),
          _step8;

      try {
        for (_iterator8.s(); !(_step8 = _iterator8.n()).done;) {
          var element = _step8.value;
          element.style.opacity = 0;
          element.style.display = display || "block";
        }
      } catch (err) {
        _iterator8.e(err);
      } finally {
        _iterator8.f();
      }

      var opacityTarget = parseFloat(elements[0].dataset.opacityTarget || 1),
          step = 16.66666 * opacityTarget / (duration || 300),
          fade = function fade() {
        var currentOpacity = parseFloat(elements[0].style.opacity);

        if (!((currentOpacity += step) > opacityTarget)) {
          var _iterator9 = _createForOfIteratorHelper(elements),
              _step9;

          try {
            for (_iterator9.s(); !(_step9 = _iterator9.n()).done;) {
              var element = _step9.value;
              element.style.opacity = currentOpacity;
            }
          } catch (err) {
            _iterator9.e(err);
          } finally {
            _iterator9.f();
          }

          requestAnimationFrame(fade);
        } else {
          var _iterator10 = _createForOfIteratorHelper(elements),
              _step10;

          try {
            for (_iterator10.s(); !(_step10 = _iterator10.n()).done;) {
              var _element2 = _step10.value;
              _element2.style.opacity = '';
            }
          } catch (err) {
            _iterator10.e(err);
          } finally {
            _iterator10.f();
          }

          callback && callback.call(_this10, elements);
        }
      };

      fade();
    }
  }, {
    key: "hide",
    value: function hide(elements) {
      elements = this.wrap(elements);

      var _iterator11 = _createForOfIteratorHelper(elements),
          _step11;

      try {
        for (_iterator11.s(); !(_step11 = _iterator11.n()).done;) {
          var element = _step11.value;
          element.dataset.initialDisplay = element.style.display;
          element.style.display = 'none';
        }
      } catch (err) {
        _iterator11.e(err);
      } finally {
        _iterator11.f();
      }
    }
  }, {
    key: "show",
    value: function show(elements, display) {
      elements = this.wrap(elements);

      var _iterator12 = _createForOfIteratorHelper(elements),
          _step12;

      try {
        for (_iterator12.s(); !(_step12 = _iterator12.n()).done;) {
          var element = _step12.value;
          element.style.display = element.dataset.initialDisplay || display || 'block';
        }
      } catch (err) {
        _iterator12.e(err);
      } finally {
        _iterator12.f();
      }
    }
  }, {
    key: "wrap",
    value: function wrap(input) {
      return typeof input[Symbol.iterator] === 'function' && typeof input !== 'string' ? input : [input];
    }
  }, {
    key: "on",
    value: function on(events, callback) {
      events = this.wrap(events);

      var _iterator13 = _createForOfIteratorHelper(this.elements),
          _step13;

      try {
        for (_iterator13.s(); !(_step13 = _iterator13.n()).done;) {
          var element = _step13.value;

          if (!element.fullyNamespacedEvents) {
            element.fullyNamespacedEvents = {};
          }

          var _iterator14 = _createForOfIteratorHelper(events),
              _step14;

          try {
            for (_iterator14.s(); !(_step14 = _iterator14.n()).done;) {
              var event = _step14.value;
              element.fullyNamespacedEvents[event] = callback;
              element.addEventListener(event, callback);
            }
          } catch (err) {
            _iterator14.e(err);
          } finally {
            _iterator14.f();
          }
        }
      } catch (err) {
        _iterator13.e(err);
      } finally {
        _iterator13.f();
      }

      return this;
    }
  }, {
    key: "off",
    value: function off(events) {
      events = this.wrap(events);

      var _iterator15 = _createForOfIteratorHelper(this.elements),
          _step15;

      try {
        for (_iterator15.s(); !(_step15 = _iterator15.n()).done;) {
          var element = _step15.value;

          var _iterator16 = _createForOfIteratorHelper(events),
              _step16;

          try {
            for (_iterator16.s(); !(_step16 = _iterator16.n()).done;) {
              var event = _step16.value;

              if (typeof element.fullyNamespacedEvents !== 'undefined' && event in element.fullyNamespacedEvents) {
                element.removeEventListener(event, element.fullyNamespacedEvents[event]);
              }
            }
          } catch (err) {
            _iterator16.e(err);
          } finally {
            _iterator16.f();
          }
        }
      } catch (err) {
        _iterator15.e(err);
      } finally {
        _iterator15.f();
      }

      return this;
    } // api

  }, {
    key: "open",
    value: function open(elem) {
      elem = elem || this.elements[0];

      if (typeof jQuery !== "undefined" && elem instanceof jQuery) {
        elem = elem.get(0);
      }

      this.initialImageIndex = this.elements.indexOf(elem);

      if (this.initialImageIndex > -1) {
        this.openImage(elem);
      }
    }
  }, {
    key: "next",
    value: function next() {
      this.loadImage(1);
    }
  }, {
    key: "prev",
    value: function prev() {
      this.loadImage(-1);
    } //close is exposed anyways..

  }, {
    key: "destroy",
    value: function destroy() {
      //remove all custom event listeners from elements
      this.off(['close.' + this.eventNamespace, 'closed.' + this.eventNamespace, 'nextImageLoaded.' + this.eventNamespace, 'prevImageLoaded.' + this.eventNamespace, 'change.' + this.eventNamespace, 'nextDone.' + this.eventNamespace, 'prevDone.' + this.eventNamespace, 'error.' + this.eventNamespace, 'changed.' + this.eventNamespace, 'next.' + this.eventNamespace, 'prev.' + this.eventNamespace, 'show.' + this.eventNamespace, 'shown.' + this.eventNamespace]);
      this.removeEventListener(this.elements, 'click.' + this.eventNamespace);
      this.removeEventListener(document.body, 'contextmenu.' + this.eventNamespace);
      this.removeEventListener(document.body, 'keyup.' + this.eventNamespace);
      this.removeEventListener(this.domNodes.navigation.getElementsByTagName('button'), 'click.' + this.eventNamespace);
      this.removeEventListener(this.domNodes.closeButton, 'click.' + this.eventNamespace);
      this.removeEventListener(window, 'resize.' + this.eventNamespace);
      this.removeEventListener(window, 'hashchange.' + this.eventNamespace);
      this.close();

      if (this.isOpen) {
        document.body.removeChild(this.domNodes.wrapper);
        document.body.removeChild(this.domNodes.overlay);
      }

      this.elements = null;
    }
  }, {
    key: "refresh",
    value: function refresh() {
      if (!this.initialSelector) {
        throw 'refreshing only works when you initialize using a selector!';
      }

      var options = this.options,
          selector = this.initialSelector;
      this.destroy();
      this.constructor(selector, options);
      return this;
    }
  }, {
    key: "hash",
    get: function get() {
      return window.location.hash.substring(1);
    }
  }]);

  return SimpleLightbox;
}();

(function ($, window, document, undefined) {
  'use strict';

  $.fn.simpleLightbox = function (options) {
    return new SimpleLightbox(this.get(), options);
  };
})(jQuery, window, document);