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✏️ Editing: ekko-lightbox.js

/*!
 * Lightbox for Bootstrap by @ashleydw
 * https://github.com/ashleydw/lightbox
 *
 * License: https://github.com/ashleydw/lightbox/blob/master/LICENSE
 */
+function ($) {

'use strict';

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

var Lightbox = (function ($) {

var NAME = 'ekkoLightbox';
	var JQUERY_NO_CONFLICT = $.fn[NAME];

var Lightbox = (function () {
		_createClass(Lightbox, null, [{
			key: 'Default',

/**
    
      Class properties:
    
    _$element: null -> the <a> element currently being displayed
    _$modal: The bootstrap modal generated
       _$modalDialog: The .modal-dialog
       _$modalContent: The .modal-content
       _$modalBody: The .modal-body
       _$modalHeader: The .modal-header
       _$modalFooter: The .modal-footer
    _$lightboxContainerOne: Container of the first lightbox element
    _$lightboxContainerTwo: Container of the second lightbox element
    _$lightboxBody: First element in the container
    _$modalArrows: The overlayed arrows container
   	 _$galleryItems: Other <a>'s available for this gallery
    _galleryName: Name of the current data('gallery') showing
    _galleryIndex: The current index of the _$galleryItems being shown
   	 _config: {} the options for the modal
    _modalId: unique id for the current lightbox
    _padding / _border: CSS properties for the modal container; these are used to calculate the available space for the content
   	 */

get: function get() {
				return Default;
			}
		}]);

function Lightbox($element, config) {
			var _this = this;

_classCallCheck(this, Lightbox);

this._config = $.extend({}, Default, config);
			this._$modalArrows = null;
			this._galleryIndex = 0;
			this._galleryName = null;
			this._padding = null;
			this._border = null;
			this._titleIsShown = false;
			this._footerIsShown = false;
			this._wantedWidth = 0;
			this._wantedHeight = 0;
			this._modalId = 'ekkoLightbox-' + Math.floor(Math.random() * 1000 + 1);
			this._$element = $element instanceof jQuery ? $element : $($element);

var header = '<div class="modal-header"' + (this._config.title || this._config.alwaysShowClose ? '' : ' style="display:none"') + '><button type="button" class="close" data-dismiss="modal" aria-label="' + this._config.strings.close + '"><span aria-hidden="true">&times;</span></button><h4 class="modal-title">' + (this._config.title || "&nbsp;") + '</h4></div>';
			var footer = '<div class="modal-footer"' + (this._config.footer ? '' : ' style="display:none"') + '>' + (this._config.footer || "&nbsp;") + '</div>';
			var body = '<div class="modal-body"><div class="ekko-lightbox-container"><div class="ekko-lightbox-item fade in"></div><div class="ekko-lightbox-item fade"></div></div></div>';
			var dialog = '<div class="modal-dialog" role="document"><div class="modal-content">' + header + body + footer + '</div></div>';
			$(this._config.doc.body).append('<div id="' + this._modalId + '" class="ekko-lightbox modal fade" tabindex="-1" tabindex="-1" role="dialog" aria-hidden="true">' + dialog + '</div>');

this._$modal = $('#' + this._modalId, this._config.doc);
			this._$modalDialog = this._$modal.find('.modal-dialog').first();
			this._$modalContent = this._$modal.find('.modal-content').first();
			this._$modalBody = this._$modal.find('.modal-body').first();
			this._$modalHeader = this._$modal.find('.modal-header').first();
			this._$modalFooter = this._$modal.find('.modal-footer').first();

this._$lightboxContainer = this._$modalBody.find('.ekko-lightbox-container').first();
			this._$lightboxBodyOne = this._$lightboxContainer.find('> div:first-child').first();
			this._$lightboxBodyTwo = this._$lightboxContainer.find('> div:last-child').first();

this._border = this._calculateBorders();
			this._padding = this._calculatePadding();

this._galleryName = this._$element.data('gallery');
			if (this._galleryName) {
				this._$galleryItems = $(document.body).find('*[data-gallery="' + this._galleryName + '"]');
				this._galleryIndex = this._$galleryItems.index(this._$element);
				$(document).on('keydown.ekkoLightbox', this._navigationalBinder.bind(this));

// add the directional arrows to the modal
				if (this._config.showArrows && this._$galleryItems.length > 1) {
					this._$lightboxContainer.append('<div class="ekko-lightbox-nav-overlay"><a href="#">' + this._config.leftArrow + '</a><a href="#">' + this._config.rightArrow + '</a></div>');
					this._$modalArrows = this._$lightboxContainer.find('div.ekko-lightbox-nav-overlay').first();
					this._$lightboxContainer.on('click', 'a:first-child', function (event) {
						event.preventDefault();
						return _this.navigateLeft();
					});
					this._$lightboxContainer.on('click', 'a:last-child', function (event) {
						event.preventDefault();
						return _this.navigateRight();
					});
				}
			}

this._$modal.on('show.bs.modal', this._config.onShow.bind(this)).on('shown.bs.modal', function () {
				_this._toggleLoading(true);
				_this._handle();
				return _this._config.onShown.call(_this);
			}).on('hide.bs.modal', this._config.onHide.bind(this)).on('hidden.bs.modal', function () {
				if (_this._galleryName) {
					$(document).off('keydown.ekkoLightbox');
					$(window).off('resize.ekkoLightbox');
				}
				_this._$modal.remove();
				return _this._config.onHidden.call(_this);
			}).modal(this._config);

$(window).on('resize.ekkoLightbox', function () {
				_this._resize(_this._wantedWidth, _this._wantedHeight);
			});
		}

_createClass(Lightbox, [{
			key: 'element',
			value: function element() {
				return this._$element;
			}
		}, {
			key: 'modal',
			value: function modal() {
				return this._$modal;
			}
		}, {
			key: 'navigateTo',
			value: function navigateTo(index) {

if (index < 0 || index > this._$galleryItems.length - 1) return this;

this._galleryIndex = index;

this._$element = $(this._$galleryItems.get(this._galleryIndex));
				this._handle();
			}
		}, {
			key: 'navigateLeft',
			value: function navigateLeft() {

if (this._$galleryItems.length === 1) return;

if (this._galleryIndex === 0) this._galleryIndex = this._$galleryItems.length - 1;else //circular
					this._galleryIndex--;

this._config.onNavigate.call(this, 'left', this._galleryIndex);
				return this.navigateTo(this._galleryIndex);
			}
		}, {
			key: 'navigateRight',
			value: function navigateRight() {

if (this._$galleryItems.length === 1) return;

if (this._galleryIndex === this._$galleryItems.length - 1) this._galleryIndex = 0;else //circular
					this._galleryIndex++;

this._config.onNavigate.call(this, 'right', this._galleryIndex);
				return this.navigateTo(this._galleryIndex);
			}
		}, {
			key: 'close',
			value: function close() {
				return this._$modal.modal('hide');
			}

// helper private methods
		}, {
			key: '_navigationalBinder',
			value: function _navigationalBinder(event) {
				event = event || window.event;
				if (event.keyCode === 39) return this.navigateRight();
				if (event.keyCode === 37) return this.navigateLeft();
			}

// type detection private methods
		}, {
			key: '_detectRemoteType',
			value: function _detectRemoteType(src, type) {

type = type || false;

if (!type && this._isImage(src)) type = 'image';
				if (!type && this._getYoutubeId(src)) type = 'youtube';
				if (!type && this._getVimeoId(src)) type = 'vimeo';
				if (!type && this._getInstagramId(src)) type = 'instagram';

if (!type || ['image', 'youtube', 'vimeo', 'instagram', 'video', 'url'].indexOf(type) < 0) type = 'url';

return type;
			}
		}, {
			key: '_isImage',
			value: function _isImage(string) {
				return string && string.match(/(^data:image\/.*,)|(\.(jp(e|g|eg)|gif|png|bmp|webp|svg)((\?|#).*)?$)/i);
			}
		}, {
			key: '_containerToUse',
			value: function _containerToUse() {
				var _this2 = this;

// if currently showing an image, fade it out and remove
				var $toUse = this._$lightboxBodyTwo;
				var $current = this._$lightboxBodyOne;

if (this._$lightboxBodyTwo.hasClass('in')) {
					$toUse = this._$lightboxBodyOne;
					$current = this._$lightboxBodyTwo;
				}

$current.removeClass('in');
				setTimeout(function () {
					if (!_this2._$lightboxBodyTwo.hasClass('in')) _this2._$lightboxBodyTwo.empty();
					if (!_this2._$lightboxBodyOne.hasClass('in')) _this2._$lightboxBodyOne.empty();
				}, 500);

$toUse.addClass('in');
				return $toUse;
			}
		}, {
			key: '_handle',
			value: function _handle() {

var $toUse = this._containerToUse();
				this._updateTitleAndFooter();

var currentRemote = this._$element.attr('data-remote') || this._$element.attr('href');
				var currentType = this._detectRemoteType(currentRemote, this._$element.attr('data-type') || false);

if (['image', 'youtube', 'vimeo', 'instagram', 'video', 'url'].indexOf(currentType) < 0) return this._error(this._config.strings.type);

switch (currentType) {
					case 'image':
						this._preloadImage(currentRemote, $toUse);
						this._preloadImageByIndex(this._galleryIndex, 3);
						break;
					case 'youtube':
						this._showYoutubeVideo(currentRemote, $toUse);
						break;
					case 'vimeo':
						this._showVimeoVideo(this._getVimeoId(currentRemote), $toUse);
						break;
					case 'instagram':
						this._showInstagramVideo(this._getInstagramId(currentRemote), $toUse);
						break;
					case 'video':
						this._showHtml5Video(currentRemote, $toUse);
						break;
					default:
						// url
						this._loadRemoteContent(currentRemote, $toUse);
						break;
				}

return this;
			}
		}, {
			key: '_getYoutubeId',
			value: function _getYoutubeId(string) {
				if (!string) return false;
				var matches = string.match(/^.*(youtu.be\/|v\/|u\/\w\/|embed\/|watch\?v=|\&v=)([^#\&\?]*).*/);
				return matches && matches[2].length === 11 ? matches[2] : false;
			}
		}, {
			key: '_getVimeoId',
			value: function _getVimeoId(string) {
				return string && string.indexOf('vimeo') > 0 ? string : false;
			}
		}, {
			key: '_getInstagramId',
			value: function _getInstagramId(string) {
				return string && string.indexOf('instagram') > 0 ? string : false;
			}

// layout private methods
		}, {
			key: '_toggleLoading',
			value: function _toggleLoading(show) {
				show = show || false;
				if (show) {
					this._$modalDialog.css('display', 'none');
					this._$modal.removeClass('in');
					$('.modal-backdrop').append(this._config.loadingMessage);
				} else {
					this._$modalDialog.css('display', 'block');
					this._$modal.addClass('in');
					$('.modal-backdrop').find('.ekko-lightbox-loader').remove();
				}
				return this;
			}
		}, {
			key: '_calculateBorders',
			value: function _calculateBorders() {
				return {
					top: this._totalCssByAttribute('border-top-width'),
					right: this._totalCssByAttribute('border-right-width'),
					bottom: this._totalCssByAttribute('border-bottom-width'),
					left: this._totalCssByAttribute('border-left-width')
				};
			}
		}, {
			key: '_calculatePadding',
			value: function _calculatePadding() {
				return {
					top: this._totalCssByAttribute('padding-top'),
					right: this._totalCssByAttribute('padding-right'),
					bottom: this._totalCssByAttribute('padding-bottom'),
					left: this._totalCssByAttribute('padding-left')
				};
			}
		}, {
			key: '_totalCssByAttribute',
			value: function _totalCssByAttribute(attribute) {
				return parseInt(this._$modalDialog.css(attribute), 10) + parseInt(this._$modalContent.css(attribute), 10) + parseInt(this._$modalBody.css(attribute), 10);
			}
		}, {
			key: '_updateTitleAndFooter',
			value: function _updateTitleAndFooter() {
				var title = this._$element.data('title') || "";
				var caption = this._$element.data('footer') || "";

this._titleIsShown = false;
				if (title || this._config.alwaysShowClose) {
					this._titleIsShown = true;
					this._$modalHeader.css('display', '').find('.modal-title').html(title || "&nbsp;");
				} else this._$modalHeader.css('display', 'none');

this._footerIsShown = false;
				if (caption) {
					this._footerIsShown = true;
					this._$modalFooter.css('display', '').html(caption);
				} else this._$modalFooter.css('display', 'none');

return this;
			}
		}, {
			key: '_showYoutubeVideo',
			value: function _showYoutubeVideo(remote, $containerForElement) {
				var id = this._getYoutubeId(remote);
				var query = remote.indexOf('&') > 0 ? remote.substr(remote.indexOf('&')) : '';
				var width = this._$element.data('width') || 560;
				var height = this._$element.data('height') || width / (560 / 315);
				return this._showVideoIframe('//www.youtube.com/embed/' + id + '?badge=0&autoplay=1&html5=1' + query, width, height, $containerForElement);
			}
		}, {
			key: '_showVimeoVideo',
			value: function _showVimeoVideo(id, $containerForElement) {
				var width = 500;
				var height = this._$element.data('height') || width / (560 / 315);
				return this._showVideoIframe(id + '?autoplay=1', width, height, $containerForElement);
			}
		}, {
			key: '_showInstagramVideo',
			value: function _showInstagramVideo(id, $containerForElement) {
				// instagram load their content into iframe's so this can be put straight into the element
				var width = this._$element.data('width') || 612;
				var height = width + 80;
				id = id.substr(-1) !== '/' ? id + '/' : id; // ensure id has trailing slash
				$containerForElement.html('<iframe width="' + width + '" height="' + height + '" src="' + id + 'embed/" frameborder="0" allowfullscreen></iframe>');
				this._resize(width, height);
				this._config.onContentLoaded.call(this);
				if (this._$modalArrows) //hide the arrows when showing video
					this._$modalArrows.css('display', 'none');
				this._toggleLoading(false);
				return this;
			}
		}, {
			key: '_showVideoIframe',
			value: function _showVideoIframe(url, width, height, $containerForElement) {
				// should be used for videos only. for remote content use loadRemoteContent (data-type=url)
				height = height || width; // default to square
				$containerForElement.html('<div class="embed-responsive embed-responsive-16by9"><iframe width="' + width + '" height="' + height + '" src="' + url + '" frameborder="0" allowfullscreen class="embed-responsive-item"></iframe></div>');
				this._resize(width, height);
				this._config.onContentLoaded.call(this);
				if (this._$modalArrows) this._$modalArrows.css('display', 'none'); //hide the arrows when showing video
				this._toggleLoading(false);
				return this;
			}
		}, {
			key: '_showHtml5Video',
			value: function _showHtml5Video(url, $containerForElement) {
				// should be used for videos only. for remote content use loadRemoteContent (data-type=url)
				var width = this._$element.data('width') || 560;
				var height = this._$element.data('height') || width / (560 / 315);
				$containerForElement.html('<div class="embed-responsive embed-responsive-16by9"><video width="' + width + '" height="' + height + '" src="' + url + '" preload="auto" autoplay controls class="embed-responsive-item"></video></div>');
				this._resize(width, height);
				this._config.onContentLoaded.call(this);
				if (this._$modalArrows) this._$modalArrows.css('display', 'none'); //hide the arrows when showing video
				this._toggleLoading(false);
				return this;
			}
		}, {
			key: '_loadRemoteContent',
			value: function _loadRemoteContent(url, $containerForElement) {
				var _this3 = this;

var width = this._$element.data('width') || 560;
				var height = this._$element.data('height') || 560;

var disableExternalCheck = this._$element.data('disableExternalCheck') || false;
				this._toggleLoading(false);

// external urls are loading into an iframe
				// local ajax can be loaded into the container itself
				if (!disableExternalCheck && !this._isExternal(url)) {
					$containerForElement.load(url, $.proxy(function () {
						return _this3._$element.trigger('loaded.bs.modal');l;
					}));
				} else {
					$containerForElement.html('<iframe src="' + url + '" frameborder="0" allowfullscreen></iframe>');
					this._config.onContentLoaded.call(this);
				}

if (this._$modalArrows) //hide the arrows when remote content
					this._$modalArrows.css('display', 'none');

this._resize(width, height);
				return this;
			}
		}, {
			key: '_isExternal',
			value: function _isExternal(url) {
				var match = url.match(/^([^:\/?#]+:)?(?:\/\/([^\/?#]*))?([^?#]+)?(\?[^#]*)?(#.*)?/);
				if (typeof match[1] === "string" && match[1].length > 0 && match[1].toLowerCase() !== location.protocol) return true;

if (typeof match[2] === "string" && match[2].length > 0 && match[2].replace(new RegExp(':(' + ({
					"http:": 80,
					"https:": 443
				})[location.protocol] + ')?$'), "") !== location.host) return true;

return false;
			}
		}, {
			key: '_error',
			value: function _error(message) {
				console.error(message);
				this._containerToUse().html(message);
				this._resize(300, 300);
				return this;
			}
		}, {
			key: '_preloadImageByIndex',
			value: function _preloadImageByIndex(startIndex, numberOfTimes) {

if (!this._$galleryItems) return;

var next = $(this._$galleryItems.get(startIndex), false);
				if (typeof next == 'undefined') return;

var src = next.attr('data-remote') || next.attr('href');
				if (next.attr('data-type') === 'image' || this._isImage(src)) this._preloadImage(src, false);

if (numberOfTimes > 0) return this._preloadImageByIndex(startIndex + 1, numberOfTimes - 1);
			}
		}, {
			key: '_preloadImage',
			value: function _preloadImage(src, $containerForImage) {
				var _this4 = this;

$containerForImage = $containerForImage || false;

var img = new Image();
				if ($containerForImage) {
					(function () {

// if loading takes > 200ms show a loader
						var loadingTimeout = setTimeout(function () {
							$containerForImage.append(_this4._config.loadingMessage);
						}, 200);

img.onload = function () {
							if (loadingTimeout) clearTimeout(loadingTimeout);
							loadingTimeout = null;
							var image = $('<img />');
							image.attr('src', img.src);
							image.addClass('img-fluid');
							$containerForImage.html(image);
							if (_this4._$modalArrows) _this4._$modalArrows.css('display', ''); // remove display to default to css property

_this4._resize(img.width, img.height);
							_this4._toggleLoading(false);
							return _this4._config.onContentLoaded.call(_this4);
						};
						img.onerror = function () {
							_this4._toggleLoading(false);
							return _this4._error(_this4._config.strings.fail + ('  ' + src));
						};
					})();
				}

img.src = src;
				return img;
			}
		}, {
			key: '_resize',
			value: function _resize(width, height) {

height = height || width;
				this._wantedWidth = width;
				this._wantedHeight = height;

// if width > the available space, scale down the expected width and height
				var widthBorderAndPadding = this._padding.left + this._padding.right + this._border.left + this._border.right;
				var maxWidth = Math.min(width + widthBorderAndPadding, this._config.doc.body.clientWidth);
				if (width + widthBorderAndPadding > maxWidth) {
					height = (maxWidth - widthBorderAndPadding) / width * height;
					width = maxWidth;
				} else width = width + widthBorderAndPadding;

var headerHeight = 0,
				    footerHeight = 0;

// as the resize is performed the modal is show, the calculate might fail
				// if so, default to the default sizes
				if (this._footerIsShown) footerHeight = this._$modalFooter.outerHeight(true) || 55;

if (this._titleIsShown) headerHeight = this._$modalHeader.outerHeight(true) || 67;

var borderPadding = this._padding.top + this._padding.bottom + this._border.bottom + this._border.top;

//calculated each time as resizing the window can cause them to change due to Bootstraps fluid margins
				var margins = parseFloat(this._$modalDialog.css('margin-top')) + parseFloat(this._$modalDialog.css('margin-bottom'));

var maxHeight = Math.min(height, $(window).height() - borderPadding - margins - headerHeight - footerHeight);
				if (height > maxHeight) {
					// if height > the available height, scale down the width
					var factor = Math.min(maxHeight / height, 1);
					width = Math.ceil(factor * width);
				}

this._$lightboxContainer.css('height', maxHeight);
				this._$modalDialog.css('width', 'auto').css('maxWidth', width);

this._$modal.modal('_handleUpdate');
				return this;
			}
		}], [{
			key: '_jQueryInterface',
			value: function _jQueryInterface(config) {
				var _this5 = this;

config = config || {};
				return this.each(function () {
					var $this = $(_this5);
					var _config = $.extend({}, Lightbox.Default, $this.data(), typeof config === 'object' && config);

new Lightbox(_this5, _config);
				});
			}
		}]);

return Lightbox;
	})();

$.fn[NAME] = Lightbox._jQueryInterface;
	$.fn[NAME].Constructor = Lightbox;
	$.fn[NAME].noConflict = function () {
		$.fn[NAME] = JQUERY_NO_CONFLICT;
		return Lightbox._jQueryInterface;
	};

return Lightbox;
})(jQuery);
//# sourceMappingURL=ekko-lightbox.js.map

}(jQuery);

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