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+/*!
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+ * Lightbox v2.9.0
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+ * by Lokesh Dhakar
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+ *
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+ * More info:
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+ * http://lokeshdhakar.com/projects/lightbox2/
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+ *
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+ * Copyright 2007, 2015 Lokesh Dhakar
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+ * Released under the MIT license
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+ * https://github.com/lokesh/lightbox2/blob/master/LICENSE
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+ *
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+ * @preserve
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+ */
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+
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+// Uses Node, AMD or browser globals to create a module.
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+(function (root, factory) {
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+ if (typeof define === 'function' && define.amd) {
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+ // AMD. Register as an anonymous module.
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+ define(['jquery'], factory);
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+ } else if (typeof exports === 'object') {
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+ // Node. Does not work with strict CommonJS, but
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+ // only CommonJS-like environments that support module.exports,
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+ // like Node.
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+ module.exports = factory(require('jquery'));
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+ } else {
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+ // Browser globals (root is window)
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+ root.lightbox = factory(root.jQuery);
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+ }
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+}(this, function ($) {
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+
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+ function Lightbox(options) {
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+ this.album = [];
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+ this.currentImageIndex = void 0;
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+ this.init();
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+
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+ // options
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+ this.options = $.extend({}, this.constructor.defaults);
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+ this.option(options);
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+ }
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+
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+ // Descriptions of all options available on the demo site:
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+ // http://lokeshdhakar.com/projects/lightbox2/index.html#options
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+ Lightbox.defaults = {
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+ albumLabel: 'Image %1 of %2',
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+ alwaysShowNavOnTouchDevices: false,
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+ fadeDuration: 600,
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+ fitImagesInViewport: true,
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+ imageFadeDuration: 600,
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+ // maxWidth: 800,
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+ // maxHeight: 600,
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+ positionFromTop: 50,
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+ resizeDuration: 700,
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+ showImageNumberLabel: true,
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+ wrapAround: false,
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+ disableScrolling: false,
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+ /*
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+ Sanitize Title
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+ If the caption data is trusted, for example you are hardcoding it in, then leave this to false.
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+ This will free you to add html tags, such as links, in the caption.
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+
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+ If the caption data is user submitted or from some other untrusted source, then set this to true
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+ to prevent xss and other injection attacks.
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+ */
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+ sanitizeTitle: false
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+ };
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+
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+ Lightbox.prototype.option = function(options) {
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+ $.extend(this.options, options);
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+ };
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+
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+ Lightbox.prototype.imageCountLabel = function(currentImageNum, totalImages) {
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+ return this.options.albumLabel.replace(/%1/g, currentImageNum).replace(/%2/g, totalImages);
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+ };
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+
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+ Lightbox.prototype.init = function() {
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+ var self = this;
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+ // Both enable and build methods require the body tag to be in the DOM.
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+ $(document).ready(function() {
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+ self.enable();
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+ self.build();
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+ });
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+ };
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+
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+ // Loop through anchors and areamaps looking for either data-lightbox attributes or rel attributes
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+ // that contain 'lightbox'. When these are clicked, start lightbox.
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+ Lightbox.prototype.enable = function() {
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+ var self = this;
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+ $('body').on('click', 'a[rel^=lightbox], area[rel^=lightbox], a[data-lightbox], area[data-lightbox]', function(event) {
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+ self.start($(event.currentTarget));
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+ return false;
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+ });
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+ };
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+
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+ // Build html for the lightbox and the overlay.
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+ // Attach event handlers to the new DOM elements. click click click
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+ Lightbox.prototype.build = function() {
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+ var self = this;
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+ $('<div id="lightboxOverlay" class="lightboxOverlay"></div><div id="lightbox" class="lightbox"><div class="lb-outerContainer"><div class="lb-container"><img class="lb-image" src="data:image/gif;base64,R0lGODlhAQABAIAAAP///wAAACH5BAEAAAAALAAAAAABAAEAAAICRAEAOw==" /><div class="lb-nav"><a class="lb-prev" href="" ></a><a class="lb-next" href="" ></a></div><div class="lb-loader"><a class="lb-cancel"></a></div></div></div><div class="lb-dataContainer"><div class="lb-data"><div class="lb-details"><span class="lb-caption"></span><span class="lb-number"></span></div><div class="lb-closeContainer"><a class="lb-close"></a></div></div></div></div>').appendTo($('body'));
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+
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+ // Cache jQuery objects
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+ this.$lightbox = $('#lightbox');
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+ this.$overlay = $('#lightboxOverlay');
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+ this.$outerContainer = this.$lightbox.find('.lb-outerContainer');
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+ this.$container = this.$lightbox.find('.lb-container');
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+ this.$image = this.$lightbox.find('.lb-image');
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+ this.$nav = this.$lightbox.find('.lb-nav');
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+
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+ // Store css values for future lookup
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+ this.containerPadding = {
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+ top: parseInt(this.$container.css('padding-top'), 10),
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+ right: parseInt(this.$container.css('padding-right'), 10),
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+ bottom: parseInt(this.$container.css('padding-bottom'), 10),
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+ left: parseInt(this.$container.css('padding-left'), 10)
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+ };
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+
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+ this.imageBorderWidth = {
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+ top: parseInt(this.$image.css('border-top-width'), 10),
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+ right: parseInt(this.$image.css('border-right-width'), 10),
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+ bottom: parseInt(this.$image.css('border-bottom-width'), 10),
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+ left: parseInt(this.$image.css('border-left-width'), 10)
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+ };
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+
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+ // Attach event handlers to the newly minted DOM elements
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+ this.$overlay.hide().on('click', function() {
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+ self.end();
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+ return false;
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+ });
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+
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+ this.$lightbox.hide().on('click', function(event) {
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+ if ($(event.target).attr('id') === 'lightbox') {
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+ self.end();
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+ }
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+ return false;
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+ });
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+
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+ this.$outerContainer.on('click', function(event) {
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+ if ($(event.target).attr('id') === 'lightbox') {
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+ self.end();
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+ }
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+ return false;
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+ });
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+
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+ this.$lightbox.find('.lb-prev').on('click', function() {
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+ if (self.currentImageIndex === 0) {
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+ self.changeImage(self.album.length - 1);
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+ } else {
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+ self.changeImage(self.currentImageIndex - 1);
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+ }
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+ return false;
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+ });
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+
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+ this.$lightbox.find('.lb-next').on('click', function() {
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+ if (self.currentImageIndex === self.album.length - 1) {
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+ self.changeImage(0);
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+ } else {
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+ self.changeImage(self.currentImageIndex + 1);
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+ }
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+ return false;
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+ });
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+
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+ /*
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+ Show context menu for image on right-click
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+
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+ There is a div containing the navigation that spans the entire image and lives above of it. If
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+ you right-click, you are right clicking this div and not the image. This prevents users from
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+ saving the image or using other context menu actions with the image.
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+
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+ To fix this, when we detect the right mouse button is pressed down, but not yet clicked, we
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+ set pointer-events to none on the nav div. This is so that the upcoming right-click event on
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+ the next mouseup will bubble down to the image. Once the right-click/contextmenu event occurs
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+ we set the pointer events back to auto for the nav div so it can capture hover and left-click
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+ events as usual.
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+ */
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+ this.$nav.on('mousedown', function(event) {
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+ if (event.which === 3) {
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+ self.$nav.css('pointer-events', 'none');
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+
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+ self.$lightbox.one('contextmenu', function() {
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+ setTimeout(function() {
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+ this.$nav.css('pointer-events', 'auto');
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+ }.bind(self), 0);
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+ });
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+ }
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+ });
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+
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+
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+ this.$lightbox.find('.lb-loader, .lb-close').on('click', function() {
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+ self.end();
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+ return false;
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+ });
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+ };
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+
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+ // Show overlay and lightbox. If the image is part of a set, add siblings to album array.
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+ Lightbox.prototype.start = function($link) {
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+ var self = this;
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+ var $window = $(window);
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+
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+ $window.on('resize', $.proxy(this.sizeOverlay, this));
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+
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+ $('select, object, embed').css({
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+ visibility: 'hidden'
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+ });
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+
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+ this.sizeOverlay();
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+
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+ this.album = [];
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+ var imageNumber = 0;
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+
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+ function addToAlbum($link) {
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+ self.album.push({
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+ link: $link.attr('href'),
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+ title: $link.attr('data-title') || $link.attr('title')
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+ });
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+ }
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+
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+ // Support both data-lightbox attribute and rel attribute implementations
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+ var dataLightboxValue = $link.attr('data-lightbox');
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+ var $links;
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+
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+ if (dataLightboxValue) {
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+ $links = $($link.prop('tagName') + '[data-lightbox="' + dataLightboxValue + '"]');
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+ for (var i = 0; i < $links.length; i = ++i) {
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+ addToAlbum($($links[i]));
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+ if ($links[i] === $link[0]) {
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+ imageNumber = i;
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+ }
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+ }
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+ } else {
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+ if ($link.attr('rel') === 'lightbox') {
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+ // If image is not part of a set
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+ addToAlbum($link);
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+ } else {
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+ // If image is part of a set
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+ $links = $($link.prop('tagName') + '[rel="' + $link.attr('rel') + '"]');
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+ for (var j = 0; j < $links.length; j = ++j) {
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+ addToAlbum($($links[j]));
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+ if ($links[j] === $link[0]) {
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+ imageNumber = j;
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+ }
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+ }
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+ }
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+ }
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+
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+ // Position Lightbox
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+ var top = $window.scrollTop() + this.options.positionFromTop;
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+ var left = $window.scrollLeft();
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+ this.$lightbox.css({
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+ top: top + 'px',
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+ left: left + 'px'
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+ }).fadeIn(this.options.fadeDuration);
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+
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+ // Disable scrolling of the page while open
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+ if (this.options.disableScrolling) {
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+ $('body').addClass('lb-disable-scrolling');
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+ }
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+
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+ this.changeImage(imageNumber);
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+ };
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+
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+ // Hide most UI elements in preparation for the animated resizing of the lightbox.
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+ Lightbox.prototype.changeImage = function(imageNumber) {
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+ var self = this;
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+
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+ this.disableKeyboardNav();
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+ var $image = this.$lightbox.find('.lb-image');
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+
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+ this.$overlay.fadeIn(this.options.fadeDuration);
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+
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+ $('.lb-loader').fadeIn('slow');
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+ this.$lightbox.find('.lb-image, .lb-nav, .lb-prev, .lb-next, .lb-dataContainer, .lb-numbers, .lb-caption').hide();
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+
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+ this.$outerContainer.addClass('animating');
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+
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+ // When image to show is preloaded, we send the width and height to sizeContainer()
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+ var preloader = new Image();
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+ preloader.onload = function() {
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+ var $preloader;
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+ var imageHeight;
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+ var imageWidth;
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+ var maxImageHeight;
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+ var maxImageWidth;
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+ var windowHeight;
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+ var windowWidth;
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+
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+ $image.attr('src', self.album[imageNumber].link);
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+
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+ $preloader = $(preloader);
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+
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+ $image.width(preloader.width);
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+ $image.height(preloader.height);
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+
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+ if (self.options.fitImagesInViewport) {
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+ // Fit image inside the viewport.
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+ // Take into account the border around the image and an additional 10px gutter on each side.
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+
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+ windowWidth = $(window).width();
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+ windowHeight = $(window).height();
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+ maxImageWidth = windowWidth - self.containerPadding.left - self.containerPadding.right - self.imageBorderWidth.left - self.imageBorderWidth.right - 20;
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+ maxImageHeight = windowHeight - self.containerPadding.top - self.containerPadding.bottom - self.imageBorderWidth.top - self.imageBorderWidth.bottom - 120;
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+
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+ // Check if image size is larger then maxWidth|maxHeight in settings
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+ if (self.options.maxWidth && self.options.maxWidth < maxImageWidth) {
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+ maxImageWidth = self.options.maxWidth;
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+ }
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+ if (self.options.maxHeight && self.options.maxHeight < maxImageWidth) {
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+ maxImageHeight = self.options.maxHeight;
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+ }
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+
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+ // Is the current image's width or height is greater than the maxImageWidth or maxImageHeight
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+ // option than we need to size down while maintaining the aspect ratio.
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+ if ((preloader.width > maxImageWidth) || (preloader.height > maxImageHeight)) {
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+ if ((preloader.width / maxImageWidth) > (preloader.height / maxImageHeight)) {
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+ imageWidth = maxImageWidth;
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+ imageHeight = parseInt(preloader.height / (preloader.width / imageWidth), 10);
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+ $image.width(imageWidth);
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+ $image.height(imageHeight);
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+ } else {
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+ imageHeight = maxImageHeight;
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+ imageWidth = parseInt(preloader.width / (preloader.height / imageHeight), 10);
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+ $image.width(imageWidth);
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+ $image.height(imageHeight);
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+ }
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+ }
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+ }
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+ self.sizeContainer($image.width(), $image.height());
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+ };
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+
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+ preloader.src = this.album[imageNumber].link;
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+ this.currentImageIndex = imageNumber;
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+ };
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+
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+ // Stretch overlay to fit the viewport
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+ Lightbox.prototype.sizeOverlay = function() {
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+ this.$overlay
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+ .width($(document).width())
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+ .height($(document).height());
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+ };
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+
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+ // Animate the size of the lightbox to fit the image we are showing
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+ Lightbox.prototype.sizeContainer = function(imageWidth, imageHeight) {
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+ var self = this;
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+
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+ var oldWidth = this.$outerContainer.outerWidth();
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+ var oldHeight = this.$outerContainer.outerHeight();
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+ var newWidth = imageWidth + this.containerPadding.left + this.containerPadding.right + this.imageBorderWidth.left + this.imageBorderWidth.right;
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+ var newHeight = imageHeight + this.containerPadding.top + this.containerPadding.bottom + this.imageBorderWidth.top + this.imageBorderWidth.bottom;
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+
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+ function postResize() {
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+ self.$lightbox.find('.lb-dataContainer').width(newWidth);
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+ self.$lightbox.find('.lb-prevLink').height(newHeight);
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+ self.$lightbox.find('.lb-nextLink').height(newHeight);
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+ self.showImage();
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+ }
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+
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+ if (oldWidth !== newWidth || oldHeight !== newHeight) {
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+ this.$outerContainer.animate({
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+ width: newWidth,
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+ height: newHeight
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+ }, this.options.resizeDuration, 'swing', function() {
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+ postResize();
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+ });
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+ } else {
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+ postResize();
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+ }
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+ };
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+
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+ // Display the image and its details and begin preload neighboring images.
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+ Lightbox.prototype.showImage = function() {
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+ this.$lightbox.find('.lb-loader').stop(true).hide();
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+ this.$lightbox.find('.lb-image').fadeIn(this.options.imageFadeDuration);
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+
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+ this.updateNav();
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+ this.updateDetails();
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+ this.preloadNeighboringImages();
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+ this.enableKeyboardNav();
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+ };
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+
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+ // Display previous and next navigation if appropriate.
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+ Lightbox.prototype.updateNav = function() {
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+ // Check to see if the browser supports touch events. If so, we take the conservative approach
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+ // and assume that mouse hover events are not supported and always show prev/next navigation
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+ // arrows in image sets.
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+ var alwaysShowNav = false;
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+ try {
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+ document.createEvent('TouchEvent');
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+ alwaysShowNav = (this.options.alwaysShowNavOnTouchDevices) ? true : false;
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+ } catch (e) {}
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+
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+ this.$lightbox.find('.lb-nav').show();
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+
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+ if (this.album.length > 1) {
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+ if (this.options.wrapAround) {
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+ if (alwaysShowNav) {
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+ this.$lightbox.find('.lb-prev, .lb-next').css('opacity', '1');
|
|
|
+ }
|
|
|
+ this.$lightbox.find('.lb-prev, .lb-next').show();
|
|
|
+ } else {
|
|
|
+ if (this.currentImageIndex > 0) {
|
|
|
+ this.$lightbox.find('.lb-prev').show();
|
|
|
+ if (alwaysShowNav) {
|
|
|
+ this.$lightbox.find('.lb-prev').css('opacity', '1');
|
|
|
+ }
|
|
|
+ }
|
|
|
+ if (this.currentImageIndex < this.album.length - 1) {
|
|
|
+ this.$lightbox.find('.lb-next').show();
|
|
|
+ if (alwaysShowNav) {
|
|
|
+ this.$lightbox.find('.lb-next').css('opacity', '1');
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+ };
|
|
|
+
|
|
|
+ // Display caption, image number, and closing button.
|
|
|
+ Lightbox.prototype.updateDetails = function() {
|
|
|
+ var self = this;
|
|
|
+
|
|
|
+ // Enable anchor clicks in the injected caption html.
|
|
|
+ // Thanks Nate Wright for the fix. @https://github.com/NateWr
|
|
|
+ if (typeof this.album[this.currentImageIndex].title !== 'undefined' &&
|
|
|
+ this.album[this.currentImageIndex].title !== '') {
|
|
|
+ var $caption = this.$lightbox.find('.lb-caption');
|
|
|
+ if (this.options.sanitizeTitle) {
|
|
|
+ $caption.text(this.album[this.currentImageIndex].title);
|
|
|
+ } else {
|
|
|
+ $caption.html(this.album[this.currentImageIndex].title);
|
|
|
+ }
|
|
|
+ $caption.fadeIn('fast')
|
|
|
+ .find('a').on('click', function(event) {
|
|
|
+ if ($(this).attr('target') !== undefined) {
|
|
|
+ window.open($(this).attr('href'), $(this).attr('target'));
|
|
|
+ } else {
|
|
|
+ location.href = $(this).attr('href');
|
|
|
+ }
|
|
|
+ });
|
|
|
+ }
|
|
|
+
|
|
|
+ if (this.album.length > 1 && this.options.showImageNumberLabel) {
|
|
|
+ var labelText = this.imageCountLabel(this.currentImageIndex + 1, this.album.length);
|
|
|
+ this.$lightbox.find('.lb-number').text(labelText).fadeIn('fast');
|
|
|
+ } else {
|
|
|
+ this.$lightbox.find('.lb-number').hide();
|
|
|
+ }
|
|
|
+
|
|
|
+ this.$outerContainer.removeClass('animating');
|
|
|
+
|
|
|
+ this.$lightbox.find('.lb-dataContainer').fadeIn(this.options.resizeDuration, function() {
|
|
|
+ return self.sizeOverlay();
|
|
|
+ });
|
|
|
+ };
|
|
|
+
|
|
|
+ // Preload previous and next images in set.
|
|
|
+ Lightbox.prototype.preloadNeighboringImages = function() {
|
|
|
+ if (this.album.length > this.currentImageIndex + 1) {
|
|
|
+ var preloadNext = new Image();
|
|
|
+ preloadNext.src = this.album[this.currentImageIndex + 1].link;
|
|
|
+ }
|
|
|
+ if (this.currentImageIndex > 0) {
|
|
|
+ var preloadPrev = new Image();
|
|
|
+ preloadPrev.src = this.album[this.currentImageIndex - 1].link;
|
|
|
+ }
|
|
|
+ };
|
|
|
+
|
|
|
+ Lightbox.prototype.enableKeyboardNav = function() {
|
|
|
+ $(document).on('keyup.keyboard', $.proxy(this.keyboardAction, this));
|
|
|
+ };
|
|
|
+
|
|
|
+ Lightbox.prototype.disableKeyboardNav = function() {
|
|
|
+ $(document).off('.keyboard');
|
|
|
+ };
|
|
|
+
|
|
|
+ Lightbox.prototype.keyboardAction = function(event) {
|
|
|
+ var KEYCODE_ESC = 27;
|
|
|
+ var KEYCODE_LEFTARROW = 37;
|
|
|
+ var KEYCODE_RIGHTARROW = 39;
|
|
|
+
|
|
|
+ var keycode = event.keyCode;
|
|
|
+ var key = String.fromCharCode(keycode).toLowerCase();
|
|
|
+ if (keycode === KEYCODE_ESC || key.match(/x|o|c/)) {
|
|
|
+ this.end();
|
|
|
+ } else if (key === 'p' || keycode === KEYCODE_LEFTARROW) {
|
|
|
+ if (this.currentImageIndex !== 0) {
|
|
|
+ this.changeImage(this.currentImageIndex - 1);
|
|
|
+ } else if (this.options.wrapAround && this.album.length > 1) {
|
|
|
+ this.changeImage(this.album.length - 1);
|
|
|
+ }
|
|
|
+ } else if (key === 'n' || keycode === KEYCODE_RIGHTARROW) {
|
|
|
+ if (this.currentImageIndex !== this.album.length - 1) {
|
|
|
+ this.changeImage(this.currentImageIndex + 1);
|
|
|
+ } else if (this.options.wrapAround && this.album.length > 1) {
|
|
|
+ this.changeImage(0);
|
|
|
+ }
|
|
|
+ }
|
|
|
+ };
|
|
|
+
|
|
|
+ // Closing time. :-(
|
|
|
+ Lightbox.prototype.end = function() {
|
|
|
+ this.disableKeyboardNav();
|
|
|
+ $(window).off('resize', this.sizeOverlay);
|
|
|
+ this.$lightbox.fadeOut(this.options.fadeDuration);
|
|
|
+ this.$overlay.fadeOut(this.options.fadeDuration);
|
|
|
+ $('select, object, embed').css({
|
|
|
+ visibility: 'visible'
|
|
|
+ });
|
|
|
+ if (this.options.disableScrolling) {
|
|
|
+ $('body').removeClass('lb-disable-scrolling');
|
|
|
+ }
|
|
|
+ };
|
|
|
+
|
|
|
+ return new Lightbox();
|
|
|
+}));
|
Rodney Enciso Arias
