| 1 |
/*! |
| 2 |
* baguetteBox.js |
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* @author feimosi |
| 4 |
* @version 1.11.1 |
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* @url https://github.com/feimosi/baguetteBox.js |
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*/ |
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|
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/* global define, module */ |
| 9 |
|
| 10 |
(function (root, factory) { |
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'use strict'; |
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if (typeof define === 'function' && define.amd) { |
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define(factory); |
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} |
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else if (typeof exports === 'object') { |
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module.exports = factory(); |
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} |
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else { |
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root.baguetteBox = factory(); |
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} |
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}(this, function () { |
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'use strict'; |
| 23 |
|
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// SVG shapes used on the buttons |
| 25 |
var leftArrow = '<svg width="44" height="60">' + |
| 26 |
'<polyline points="30 10 10 30 30 50" stroke="rgba(255,255,255,0.5)" stroke-width="4"' + |
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'stroke-linecap="butt" fill="none" stroke-linejoin="round"/>' + |
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'</svg>', |
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rightArrow = '<svg width="44" height="60">' + |
| 30 |
'<polyline points="14 10 34 30 14 50" stroke="rgba(255,255,255,0.5)" stroke-width="4"' + |
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'stroke-linecap="butt" fill="none" stroke-linejoin="round"/>' + |
| 32 |
'</svg>', |
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closeX = '<svg width="30" height="30">' + |
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'<g stroke="rgb(160,160,160)" stroke-width="4">' + |
| 35 |
'<line x1="5" y1="5" x2="25" y2="25"/>' + |
| 36 |
'<line x1="5" y1="25" x2="25" y2="5"/>' + |
| 37 |
'</g></svg>'; |
| 38 |
// Global options and their defaults |
| 39 |
var options = {}, |
| 40 |
defaults = { |
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captions: true, |
| 42 |
buttons: 'auto', |
| 43 |
fullScreen: false, |
| 44 |
noScrollbars: false, |
| 45 |
bodyClass: 'baguetteBox-open', |
| 46 |
titleTag: false, |
| 47 |
async: false, |
| 48 |
preload: 2, |
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animation: 'slideIn', |
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afterShow: null, |
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afterHide: null, |
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onChange: null, |
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overlayBackgroundColor: 'rgba(0,0,0,.8)' |
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}; |
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// Object containing information about features compatibility |
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var supports = {}; |
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// DOM Elements references |
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var overlay, slider, previousButton, nextButton, closeButton; |
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// An array with all images in the current gallery |
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var currentGallery = []; |
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// Current image index inside the slider |
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var currentIndex = 0; |
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// Visibility of the overlay |
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var isOverlayVisible = false; |
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// Touch event start position (for slide gesture) |
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var touch = {}; |
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// If set to true ignore touch events because animation was already fired |
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var touchFlag = false; |
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|
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// Regex pattern to match image & video files |
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var regex = /.+\.(gif|jpe?g|png|webp|mp4|webm)/i; |
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// Pattern to match only videos |
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var videoRegex = /.+\.(mp4|webm)/i; |
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|
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// Object of all used galleries |
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var data = {}; |
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// Array containing temporary images DOM elements |
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var imagesElements = []; |
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// The last focused element before opening the overlay |
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var documentLastFocus = null; |
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var overlayClickHandler = function (event) { |
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// Close the overlay when user clicks directly on the background |
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if (event.target.id.indexOf('baguette-img') !== -1) { |
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hideOverlay(); |
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} |
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}; |
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var previousButtonClickHandler = function (event) { |
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event.stopPropagation ? event.stopPropagation() : event.cancelBubble = true; // eslint-disable-line no-unused-expressions |
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showPreviousImage(); |
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}; |
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var nextButtonClickHandler = function (event) { |
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event.stopPropagation ? event.stopPropagation() : event.cancelBubble = true; // eslint-disable-line no-unused-expressions |
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showNextImage(); |
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}; |
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var closeButtonClickHandler = function (event) { |
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event.stopPropagation ? event.stopPropagation() : event.cancelBubble = true; // eslint-disable-line no-unused-expressions |
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hideOverlay(); |
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}; |
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var touchstartHandler = function (event) { |
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touch.count++; |
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if (touch.count > 1) { |
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touch.multitouch = true; |
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} |
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// Save x and y axis position |
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touch.startX = event.changedTouches[0].pageX; |
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touch.startY = event.changedTouches[0].pageY; |
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}; |
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var touchmoveHandler = function (event) { |
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// If action was already triggered or multitouch return |
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if (touchFlag || touch.multitouch) { |
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return; |
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} |
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event.preventDefault ? event.preventDefault() : event.returnValue = false; // eslint-disable-line no-unused-expressions |
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var touchEvent = event.touches[0] || event.changedTouches[0]; |
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// Move at least 40 pixels to trigger the action |
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if (touchEvent.pageX - touch.startX > 40) { |
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touchFlag = true; |
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showPreviousImage(); |
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} |
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else if (touchEvent.pageX - touch.startX < -40) { |
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touchFlag = true; |
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showNextImage(); |
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// Move 100 pixels up to close the overlay |
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} |
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else if (touch.startY - touchEvent.pageY > 100) { |
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hideOverlay(); |
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} |
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}; |
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var touchendHandler = function () { |
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touch.count--; |
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if (touch.count <= 0) { |
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touch.multitouch = false; |
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} |
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touchFlag = false; |
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}; |
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var contextmenuHandler = function () { |
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touchendHandler(); |
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}; |
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|
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var trapFocusInsideOverlay = function (event) { |
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if (overlay.style.display === 'block' && (overlay.contains && !overlay.contains(event.target))) { |
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event.stopPropagation(); |
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initFocus(); |
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} |
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}; |
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|
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// forEach polyfill for IE8 |
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// http://stackoverflow.com/a/14827443/1077846 |
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/* eslint-disable */ |
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if (![].forEach) { |
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Array.prototype.forEach = function (callback, thisArg) { |
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for (var i = 0; i < this.length; i++) { |
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callback.call(thisArg, this[i], i, this); |
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} |
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}; |
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} |
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|
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// filter polyfill for IE8 |
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// https://gist.github.com/eliperelman/1031656 |
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if (![].filter) { |
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Array.prototype.filter = function (a, b, c, d, e) { |
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c = this; |
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d = []; |
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for (e = 0; e < c.length; e++) |
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a.call(b, c[e], e, c) && d.push(c[e]); |
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return d; |
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}; |
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} |
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/* eslint-enable */ |
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|
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// Script entry point |
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function run(selector, userOptions) { |
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// Fill supports object |
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supports.transforms = testTransformsSupport(); |
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supports.svg = testSvgSupport(); |
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supports.passiveEvents = testPassiveEventsSupport(); |
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|
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buildOverlay(); |
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removeFromCache(selector); |
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return bindImageClickListeners(selector, userOptions); |
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} |
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|
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function bindImageClickListeners(selector, userOptions) { |
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// For each gallery bind a click event to every image inside it |
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var galleryNodeList = document.querySelectorAll(selector); |
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var selectorData = { |
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galleries: [], |
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nodeList: galleryNodeList |
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}; |
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data[selector] = selectorData; |
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|
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[].forEach.call(galleryNodeList, function (galleryElement) { |
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if (userOptions && userOptions.filter) { |
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regex = userOptions.filter; |
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} |
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|
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// Get nodes from gallery elements or single-element galleries |
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var tagsNodeList = []; |
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if (galleryElement.tagName === 'A') { |
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tagsNodeList = [galleryElement]; |
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} |
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else { |
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tagsNodeList = galleryElement.getElementsByTagName('a'); |
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} |
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|
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// Filter 'a' elements from those not linking to images |
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tagsNodeList = [].filter.call(tagsNodeList, function (element) { |
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if (element.className.indexOf(userOptions && userOptions.ignoreClass) === -1) { |
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return regex.test(element.href) || ('image' === element.getAttribute('data-content-type') || ('video' === element.getAttribute('data-content-type'))); |
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} |
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}); |
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if (tagsNodeList.length === 0) { |
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return; |
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} |
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|
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var gallery = []; |
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[].forEach.call(tagsNodeList, function (imageElement, imageIndex) { |
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var imageElementClickHandler = function (event) { |
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event.preventDefault ? event.preventDefault() : event.returnValue = false; // eslint-disable-line no-unused-expressions |
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prepareOverlay(gallery, userOptions); |
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showOverlay(imageIndex); |
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}; |
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var imageItem = { |
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eventHandler: imageElementClickHandler, |
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imageElement: imageElement |
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}; |
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bind(imageElement, 'click', imageElementClickHandler); |
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gallery.push(imageItem); |
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}); |
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selectorData.galleries.push(gallery); |
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}); |
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|
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return selectorData.galleries; |
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} |
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|
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function clearCachedData() { |
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for (var selector in data) { |
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if (data.hasOwnProperty(selector)) { |
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removeFromCache(selector); |
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} |
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} |
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} |
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|
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function removeFromCache(selector) { |
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if (!data.hasOwnProperty(selector)) { |
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return; |
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} |
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var galleries = data[selector].galleries; |
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[].forEach.call(galleries, function (gallery) { |
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[].forEach.call(gallery, function (imageItem) { |
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unbind(imageItem.imageElement, 'click', imageItem.eventHandler); |
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}); |
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|
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if (currentGallery === gallery) { |
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currentGallery = []; |
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} |
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}); |
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|
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delete data[selector]; |
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} |
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|
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function buildOverlay() { |
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overlay = getByID('baguetteBox-overlay'); |
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// Check if the overlay already exists |
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if (overlay) { |
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slider = getByID('baguetteBox-slider'); |
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previousButton = getByID('previous-button'); |
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nextButton = getByID('next-button'); |
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closeButton = getByID('close-button'); |
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return; |
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} |
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// Create overlay element |
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overlay = create('div'); |
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overlay.setAttribute('role', 'dialog'); |
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overlay.id = 'baguetteBox-overlay'; |
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document.getElementsByTagName('body')[0].appendChild(overlay); |
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// Create gallery slider element |
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slider = create('div'); |
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slider.id = 'baguetteBox-slider'; |
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overlay.appendChild(slider); |
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// Create all necessary buttons |
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previousButton = create('button'); |
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previousButton.setAttribute('type', 'button'); |
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previousButton.id = 'previous-button'; |
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previousButton.setAttribute('aria-label', 'Previous'); |
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previousButton.innerHTML = supports.svg ? leftArrow : '<'; |
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overlay.appendChild(previousButton); |
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|
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nextButton = create('button'); |
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nextButton.setAttribute('type', 'button'); |
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nextButton.id = 'next-button'; |
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nextButton.setAttribute('aria-label', 'Next'); |
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nextButton.innerHTML = supports.svg ? rightArrow : '>'; |
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overlay.appendChild(nextButton); |
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|
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closeButton = create('button'); |
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closeButton.setAttribute('type', 'button'); |
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closeButton.id = 'close-button'; |
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closeButton.setAttribute('aria-label', 'Close'); |
| 300 |
closeButton.innerHTML = supports.svg ? closeX : '×'; |
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overlay.appendChild(closeButton); |
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|
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previousButton.className = nextButton.className = closeButton.className = 'baguetteBox-button'; |
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|
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bindEvents(); |
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} |
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|
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function keyDownHandler(event) { |
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switch (event.keyCode) { |
| 310 |
case 37: // Left arrow |
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showPreviousImage(); |
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break; |
| 313 |
case 39: // Right arrow |
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showNextImage(); |
| 315 |
break; |
| 316 |
case 27: // Esc |
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hideOverlay(); |
| 318 |
break; |
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case 36: // Home |
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showFirstImage(event); |
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break; |
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case 35: // End |
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showLastImage(event); |
| 324 |
break; |
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} |
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} |
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|
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function bindEvents() { |
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var passiveEvent = supports.passiveEvents ? {passive: false} : null; |
| 330 |
var nonPassiveEvent = supports.passiveEvents ? {passive: true} : null; |
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|
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bind(overlay, 'click', overlayClickHandler); |
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bind(previousButton, 'click', previousButtonClickHandler); |
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bind(nextButton, 'click', nextButtonClickHandler); |
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bind(closeButton, 'click', closeButtonClickHandler); |
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bind(slider, 'contextmenu', contextmenuHandler); |
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bind(overlay, 'touchstart', touchstartHandler, nonPassiveEvent); |
| 338 |
bind(overlay, 'touchmove', touchmoveHandler, passiveEvent); |
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bind(overlay, 'touchend', touchendHandler); |
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bind(document, 'focus', trapFocusInsideOverlay, true); |
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} |
| 342 |
|
| 343 |
function unbindEvents() { |
| 344 |
var passiveEvent = supports.passiveEvents ? {passive: false} : null; |
| 345 |
var nonPassiveEvent = supports.passiveEvents ? {passive: true} : null; |
| 346 |
|
| 347 |
unbind(overlay, 'click', overlayClickHandler); |
| 348 |
unbind(previousButton, 'click', previousButtonClickHandler); |
| 349 |
unbind(nextButton, 'click', nextButtonClickHandler); |
| 350 |
unbind(closeButton, 'click', closeButtonClickHandler); |
| 351 |
unbind(slider, 'contextmenu', contextmenuHandler); |
| 352 |
unbind(overlay, 'touchstart', touchstartHandler, nonPassiveEvent); |
| 353 |
unbind(overlay, 'touchmove', touchmoveHandler, passiveEvent); |
| 354 |
unbind(overlay, 'touchend', touchendHandler); |
| 355 |
unbind(document, 'focus', trapFocusInsideOverlay, true); |
| 356 |
} |
| 357 |
|
| 358 |
function prepareOverlay(gallery, userOptions) { |
| 359 |
// If the same gallery is being opened prevent from loading it once again |
| 360 |
if (currentGallery === gallery) { |
| 361 |
return; |
| 362 |
} |
| 363 |
currentGallery = gallery; |
| 364 |
// Update gallery specific options |
| 365 |
setOptions(userOptions); |
| 366 |
// Empty slider of previous contents (more effective than .innerHTML = "") |
| 367 |
while (slider.firstChild) { |
| 368 |
slider.removeChild(slider.firstChild); |
| 369 |
} |
| 370 |
imagesElements.length = 0; |
| 371 |
|
| 372 |
var imagesFiguresIds = []; |
| 373 |
var imagesCaptionsIds = []; |
| 374 |
// Prepare and append images containers and populate figure and captions IDs arrays |
| 375 |
for (var i = 0, fullImage; i < gallery.length; i++) { |
| 376 |
fullImage = create('div'); |
| 377 |
fullImage.className = 'full-image'; |
| 378 |
fullImage.id = 'baguette-img-' + i; |
| 379 |
imagesElements.push(fullImage); |
| 380 |
|
| 381 |
imagesFiguresIds.push('baguetteBox-figure-' + i); |
| 382 |
imagesCaptionsIds.push('baguetteBox-figcaption-' + i); |
| 383 |
slider.appendChild(imagesElements[i]); |
| 384 |
} |
| 385 |
overlay.setAttribute('aria-labelledby', imagesFiguresIds.join(' ')); |
| 386 |
overlay.setAttribute('aria-describedby', imagesCaptionsIds.join(' ')); |
| 387 |
} |
| 388 |
|
| 389 |
function setOptions(newOptions) { |
| 390 |
if (!newOptions) { |
| 391 |
newOptions = {}; |
| 392 |
} |
| 393 |
// Fill options object |
| 394 |
for (var item in defaults) { |
| 395 |
options[item] = defaults[item]; |
| 396 |
if (typeof newOptions[item] !== 'undefined') { |
| 397 |
options[item] = newOptions[item]; |
| 398 |
} |
| 399 |
} |
| 400 |
/* Apply new options */ |
| 401 |
// Change transition for proper animation |
| 402 |
slider.style.transition = slider.style.webkitTransition = (options.animation === 'fadeIn' ? 'opacity .4s ease' : |
| 403 |
options.animation === 'slideIn' ? '' : 'none'); |
| 404 |
// Hide buttons if necessary |
| 405 |
if (options.buttons === 'auto' && ('ontouchstart' in window || currentGallery.length === 1)) { |
| 406 |
options.buttons = false; |
| 407 |
} |
| 408 |
// Set buttons style to hide or display them |
| 409 |
previousButton.style.display = nextButton.style.display = (options.buttons ? '' : 'none'); |
| 410 |
// Set overlay color |
| 411 |
try { |
| 412 |
overlay.style.backgroundColor = options.overlayBackgroundColor; |
| 413 |
} |
| 414 |
catch (e) { |
| 415 |
// Silence the error and continue |
| 416 |
} |
| 417 |
} |
| 418 |
|
| 419 |
function showOverlay(chosenImageIndex) { |
| 420 |
if (options.noScrollbars) { |
| 421 |
document.documentElement.style.overflowY = 'hidden'; |
| 422 |
document.body.style.overflowY = 'scroll'; |
| 423 |
} |
| 424 |
if (overlay.style.display === 'block') { |
| 425 |
return; |
| 426 |
} |
| 427 |
|
| 428 |
bind(document, 'keydown', keyDownHandler); |
| 429 |
currentIndex = chosenImageIndex; |
| 430 |
touch = { |
| 431 |
count: 0, |
| 432 |
startX: null, |
| 433 |
startY: null |
| 434 |
}; |
| 435 |
loadImage(currentIndex, function () { |
| 436 |
preloadNext(currentIndex); |
| 437 |
preloadPrev(currentIndex); |
| 438 |
}); |
| 439 |
|
| 440 |
updateOffset(); |
| 441 |
overlay.style.display = 'block'; |
| 442 |
if (options.fullScreen) { |
| 443 |
enterFullScreen(); |
| 444 |
} |
| 445 |
// Fade in overlay |
| 446 |
setTimeout(function () { |
| 447 |
overlay.className = 'visible'; |
| 448 |
if (options.bodyClass && document.body.classList) { |
| 449 |
document.body.classList.add(options.bodyClass); |
| 450 |
} |
| 451 |
if (options.afterShow) { |
| 452 |
options.afterShow(); |
| 453 |
} |
| 454 |
}, 50); |
| 455 |
if (options.onChange) { |
| 456 |
options.onChange(currentIndex, imagesElements.length); |
| 457 |
} |
| 458 |
documentLastFocus = document.activeElement; |
| 459 |
initFocus(); |
| 460 |
isOverlayVisible = true; |
| 461 |
} |
| 462 |
|
| 463 |
function initFocus() { |
| 464 |
if (options.buttons) { |
| 465 |
previousButton.focus(); |
| 466 |
} |
| 467 |
else { |
| 468 |
closeButton.focus(); |
| 469 |
} |
| 470 |
} |
| 471 |
|
| 472 |
function enterFullScreen() { |
| 473 |
if (overlay.requestFullscreen) { |
| 474 |
overlay.requestFullscreen(); |
| 475 |
} |
| 476 |
else if (overlay.webkitRequestFullscreen) { |
| 477 |
overlay.webkitRequestFullscreen(); |
| 478 |
} |
| 479 |
else if (overlay.mozRequestFullScreen) { |
| 480 |
overlay.mozRequestFullScreen(); |
| 481 |
} |
| 482 |
} |
| 483 |
|
| 484 |
function exitFullscreen() { |
| 485 |
if (document.exitFullscreen) { |
| 486 |
document.exitFullscreen(); |
| 487 |
} |
| 488 |
else if (document.mozCancelFullScreen) { |
| 489 |
document.mozCancelFullScreen(); |
| 490 |
} |
| 491 |
else if (document.webkitExitFullscreen) { |
| 492 |
document.webkitExitFullscreen(); |
| 493 |
} |
| 494 |
} |
| 495 |
|
| 496 |
function hideOverlay() { |
| 497 |
if (options.noScrollbars) { |
| 498 |
document.documentElement.style.overflowY = 'auto'; |
| 499 |
document.body.style.overflowY = 'auto'; |
| 500 |
} |
| 501 |
if (overlay.style.display === 'none') { |
| 502 |
return; |
| 503 |
} |
| 504 |
|
| 505 |
unbind(document, 'keydown', keyDownHandler); |
| 506 |
// Fade out and hide the overlay |
| 507 |
overlay.className = ''; |
| 508 |
setTimeout(function () { |
| 509 |
overlay.style.display = 'none'; |
| 510 |
if (document.fullscreen) { |
| 511 |
exitFullscreen(); |
| 512 |
} |
| 513 |
if (options.bodyClass && document.body.classList) { |
| 514 |
document.body.classList.remove(options.bodyClass); |
| 515 |
} |
| 516 |
if (options.afterHide) { |
| 517 |
options.afterHide(); |
| 518 |
} |
| 519 |
pauseAnyVideoPlaying(); |
| 520 |
|
| 521 |
documentLastFocus && documentLastFocus.focus(); |
| 522 |
isOverlayVisible = false; |
| 523 |
}, 500); |
| 524 |
} |
| 525 |
|
| 526 |
function pauseAnyVideoPlaying() { |
| 527 |
[].forEach.call(imagesElements, function (imageElement) { |
| 528 |
if (imageElement.getElementsByTagName('video').length > 0) { |
| 529 |
imageElement.getElementsByTagName('video')[0].pause(); |
| 530 |
} |
| 531 |
}); |
| 532 |
} |
| 533 |
|
| 534 |
function loadImage(index, callback) { |
| 535 |
var imageContainer = imagesElements[index]; |
| 536 |
var galleryItem = currentGallery[index]; |
| 537 |
var isVideo = false; |
| 538 |
if (imageContainer !== undefined) { |
| 539 |
isVideo = videoRegex.test(galleryItem.imageElement.href) || ('video' === galleryItem.imageElement.getAttribute('data-content-type')); |
| 540 |
} |
| 541 |
|
| 542 |
// Return if the index exceeds prepared images in the overlay |
| 543 |
// or if the current gallery has been changed / closed |
| 544 |
if (typeof imageContainer === 'undefined' || typeof galleryItem === 'undefined') { |
| 545 |
return; |
| 546 |
} |
| 547 |
|
| 548 |
// If image is already loaded run callback and return |
| 549 |
if ((imageContainer.getElementsByTagName('img')[0] && !isVideo) || (imageContainer.getElementsByTagName('video')[0] && isVideo)) { |
| 550 |
if (callback) { |
| 551 |
callback(); |
| 552 |
} |
| 553 |
return; |
| 554 |
} |
| 555 |
|
| 556 |
// Get element reference, optional caption and source path |
| 557 |
var imageElement = galleryItem.imageElement; |
| 558 |
var thumbnailElement = isVideo ? imageElement.getElementsByTagName('video')[0] : imageElement.getElementsByTagName('img')[0]; |
| 559 |
var imageCaption = typeof options.captions === 'function' ? |
| 560 |
options.captions.call(currentGallery, imageElement) : |
| 561 |
imageElement.getAttribute('data-caption') || imageElement.title; |
| 562 |
var imageSrc = isVideo ? getVideoSrc(imageElement) : getImageSrc(imageElement); |
| 563 |
|
| 564 |
// Prepare figure element |
| 565 |
var figure = create('figure'); |
| 566 |
figure.id = 'baguetteBox-figure-' + index; |
| 567 |
figure.innerHTML = '<div class="baguetteBox-spinner">' + |
| 568 |
'<div class="baguetteBox-double-bounce1"></div>' + |
| 569 |
'<div class="baguetteBox-double-bounce2"></div>' + |
| 570 |
'</div>'; |
| 571 |
// Insert caption if available |
| 572 |
if (options.captions && imageCaption) { |
| 573 |
var figcaption = create('figcaption'); |
| 574 |
figcaption.id = 'baguetteBox-figcaption-' + index; |
| 575 |
figcaption.innerHTML = imageCaption; |
| 576 |
figure.appendChild(figcaption); |
| 577 |
} |
| 578 |
imageContainer.appendChild(figure); |
| 579 |
|
| 580 |
if (!isVideo) { // Prepare gallery img element |
| 581 |
var image = create('img'); |
| 582 |
image.onload = function () { |
| 583 |
// Remove loader element |
| 584 |
var spinner = document.querySelector('#baguette-img-' + index + ' .baguetteBox-spinner'); |
| 585 |
figure.removeChild(spinner); |
| 586 |
if (!options.async && callback) { |
| 587 |
callback(); |
| 588 |
} |
| 589 |
}; |
| 590 |
image.setAttribute('src', imageSrc); |
| 591 |
image.alt = thumbnailElement ? thumbnailElement.alt || '' : ''; |
| 592 |
if (options.titleTag && imageCaption) { |
| 593 |
image.title = imageCaption; |
| 594 |
} |
| 595 |
figure.appendChild(image); |
| 596 |
} |
| 597 |
else { |
| 598 |
// Prepare gallery video element |
| 599 |
var video = create('video'); |
| 600 |
video.addEventListener('loadeddata', function () { |
| 601 |
//Remove loader element |
| 602 |
var spinner = document.querySelector('#baguette-img-' + index + ' .baguetteBox-spinner'); |
| 603 |
figure.removeChild(spinner); |
| 604 |
if (!options.async && callback) { |
| 605 |
callback(); |
| 606 |
} |
| 607 |
}); |
| 608 |
var source = create('source'); |
| 609 |
source.setAttribute('src', imageSrc); |
| 610 |
video.appendChild(source); |
| 611 |
if (options.titleTag && imageCaption) { |
| 612 |
video.title = imageCaption; |
| 613 |
} |
| 614 |
figure.appendChild(video); |
| 615 |
} |
| 616 |
|
| 617 |
// Run callback |
| 618 |
if (options.async && callback) { |
| 619 |
callback(); |
| 620 |
} |
| 621 |
} |
| 622 |
|
| 623 |
// Get image source location, mostly used for responsive images |
| 624 |
function getImageSrc(image) { |
| 625 |
// Set default image path from href |
| 626 |
var result = image.href; |
| 627 |
// If dataset is supported find the most suitable image |
| 628 |
if (image.dataset) { |
| 629 |
var srcs = []; |
| 630 |
// Get all possible image versions depending on the resolution |
| 631 |
for (var item in image.dataset) { |
| 632 |
if (item.substring(0, 3) === 'at-' && !isNaN(item.substring(3))) { |
| 633 |
srcs[item.replace('at-', '')] = image.dataset[item]; |
| 634 |
} |
| 635 |
} |
| 636 |
// Sort resolutions ascending |
| 637 |
var keys = Object.keys(srcs).sort(function (a, b) { |
| 638 |
return parseInt(a, 10) < parseInt(b, 10) ? -1 : 1; |
| 639 |
}); |
| 640 |
// Get real screen resolution |
| 641 |
var width = window.innerWidth * window.devicePixelRatio; |
| 642 |
// Find the first image bigger than or equal to the current width |
| 643 |
var i = 0; |
| 644 |
while (i < keys.length - 1 && keys[i] < width) { |
| 645 |
i++; |
| 646 |
} |
| 647 |
result = srcs[keys[i]] || result; |
| 648 |
} |
| 649 |
return result; |
| 650 |
} |
| 651 |
|
| 652 |
// Get video source location, mostly used for responsive images |
| 653 |
function getVideoSrc(image) { |
| 654 |
// Set default image path from href |
| 655 |
var result = image.href; //image.getElementsByTagName('video')[0].getElementsByTagName('source')[0].src; |
| 656 |
// If dataset is supported find the most suitable image |
| 657 |
if (image.dataset) { |
| 658 |
var srcs = []; |
| 659 |
// Get all possible image versions depending on the resolution |
| 660 |
for (var item in image.dataset) { |
| 661 |
if (item.substring(0, 3) === 'at-' && !isNaN(item.substring(3))) { |
| 662 |
srcs[item.replace('at-', '')] = image.dataset[item]; |
| 663 |
} |
| 664 |
} |
| 665 |
// Sort resolutions ascending |
| 666 |
var keys = Object.keys(srcs).sort(function (a, b) { |
| 667 |
return parseInt(a, 10) < parseInt(b, 10) ? -1 : 1; |
| 668 |
}); |
| 669 |
// Get real screen resolution |
| 670 |
var width = window.innerWidth * window.devicePixelRatio; |
| 671 |
// Find the first image bigger than or equal to the current width |
| 672 |
var i = 0; |
| 673 |
while (i < keys.length - 1 && keys[i] < width) { |
| 674 |
i++; |
| 675 |
} |
| 676 |
result = srcs[keys[i]] || result; |
| 677 |
} |
| 678 |
return result; |
| 679 |
} |
| 680 |
|
| 681 |
// Return false at the right end of the gallery |
| 682 |
function showNextImage() { |
| 683 |
return show(currentIndex + 1); |
| 684 |
} |
| 685 |
|
| 686 |
// Return false at the left end of the gallery |
| 687 |
function showPreviousImage() { |
| 688 |
return show(currentIndex - 1); |
| 689 |
} |
| 690 |
|
| 691 |
// Return false at the left end of the gallery |
| 692 |
function showFirstImage(event) { |
| 693 |
if (event) { |
| 694 |
event.preventDefault(); |
| 695 |
} |
| 696 |
return show(0); |
| 697 |
} |
| 698 |
|
| 699 |
// Return false at the right end of the gallery |
| 700 |
function showLastImage(event) { |
| 701 |
if (event) { |
| 702 |
event.preventDefault(); |
| 703 |
} |
| 704 |
return show(currentGallery.length - 1); |
| 705 |
} |
| 706 |
|
| 707 |
/** |
| 708 |
* Move the gallery to a specific index |
| 709 |
* @param `index` {number} - the position of the image |
| 710 |
* @param `gallery` {array} - gallery which should be opened, if omitted assumes the currently opened one |
| 711 |
* @return {boolean} - true on success or false if the index is invalid |
| 712 |
*/ |
| 713 |
function show(index, gallery) { |
| 714 |
if (!isOverlayVisible && index >= 0 && index < gallery.length) { |
| 715 |
prepareOverlay(gallery, options); |
| 716 |
showOverlay(index); |
| 717 |
return true; |
| 718 |
} |
| 719 |
if (index < 0) { |
| 720 |
if (options.animation) { |
| 721 |
bounceAnimation('left'); |
| 722 |
} |
| 723 |
return false; |
| 724 |
} |
| 725 |
if (index >= imagesElements.length) { |
| 726 |
if (options.animation) { |
| 727 |
bounceAnimation('right'); |
| 728 |
} |
| 729 |
return false; |
| 730 |
} |
| 731 |
|
| 732 |
currentIndex = index; |
| 733 |
loadImage(currentIndex, function () { |
| 734 |
preloadNext(currentIndex); |
| 735 |
preloadPrev(currentIndex); |
| 736 |
}); |
| 737 |
updateOffset(); |
| 738 |
|
| 739 |
if (options.onChange) { |
| 740 |
options.onChange(currentIndex, imagesElements.length); |
| 741 |
} |
| 742 |
|
| 743 |
return true; |
| 744 |
} |
| 745 |
|
| 746 |
/** |
| 747 |
* Triggers the bounce animation |
| 748 |
* @param {('left'|'right')} direction - Direction of the movement |
| 749 |
*/ |
| 750 |
function bounceAnimation(direction) { |
| 751 |
slider.className = 'bounce-from-' + direction; |
| 752 |
setTimeout(function () { |
| 753 |
slider.className = ''; |
| 754 |
}, 400); |
| 755 |
} |
| 756 |
|
| 757 |
function updateOffset() { |
| 758 |
pauseAnyVideoPlaying(); |
| 759 |
|
| 760 |
var offset = -currentIndex * 100 + '%'; |
| 761 |
if (options.animation === 'fadeIn') { |
| 762 |
slider.style.opacity = 0; |
| 763 |
setTimeout(function () { |
| 764 |
supports.transforms ? |
| 765 |
slider.style.transform = slider.style.webkitTransform = 'translate3d(' + offset + ',0,0)' |
| 766 |
: slider.style.left = offset; |
| 767 |
slider.style.opacity = 1; |
| 768 |
}, 400); |
| 769 |
} |
| 770 |
else { |
| 771 |
supports.transforms ? |
| 772 |
slider.style.transform = slider.style.webkitTransform = 'translate3d(' + offset + ',0,0)' |
| 773 |
: slider.style.left = offset; |
| 774 |
} |
| 775 |
|
| 776 |
if (imagesElements[currentIndex].getElementsByTagName('video').length > 0) { |
| 777 |
imagesElements[currentIndex].getElementsByTagName('video')[0].play(); |
| 778 |
} |
| 779 |
} |
| 780 |
|
| 781 |
// CSS 3D Transforms test |
| 782 |
function testTransformsSupport() { |
| 783 |
var div = create('div'); |
| 784 |
return typeof div.style.perspective !== 'undefined' || typeof div.style.webkitPerspective !== 'undefined'; |
| 785 |
} |
| 786 |
|
| 787 |
// Inline SVG test |
| 788 |
function testSvgSupport() { |
| 789 |
var div = create('div'); |
| 790 |
div.innerHTML = '<svg/>'; |
| 791 |
return (div.firstChild && div.firstChild.namespaceURI) === 'http://www.w3.org/2000/svg'; |
| 792 |
} |
| 793 |
|
| 794 |
// Borrowed from https://github.com/seiyria/bootstrap-slider/pull/680/files |
| 795 |
/* eslint-disable getter-return */ |
| 796 |
function testPassiveEventsSupport() { |
| 797 |
var passiveEvents = false; |
| 798 |
try { |
| 799 |
var opts = Object.defineProperty({}, 'passive', { |
| 800 |
get: function () { |
| 801 |
passiveEvents = true; |
| 802 |
} |
| 803 |
}); |
| 804 |
window.addEventListener('test', null, opts); |
| 805 |
} |
| 806 |
catch (e) { /* Silence the error and continue */ |
| 807 |
} |
| 808 |
|
| 809 |
return passiveEvents; |
| 810 |
} |
| 811 |
|
| 812 |
/* eslint-enable getter-return */ |
| 813 |
|
| 814 |
function preloadNext(index) { |
| 815 |
if (index - currentIndex >= options.preload) { |
| 816 |
return; |
| 817 |
} |
| 818 |
loadImage(index + 1, function () { |
| 819 |
preloadNext(index + 1); |
| 820 |
}); |
| 821 |
} |
| 822 |
|
| 823 |
function preloadPrev(index) { |
| 824 |
if (currentIndex - index >= options.preload) { |
| 825 |
return; |
| 826 |
} |
| 827 |
loadImage(index - 1, function () { |
| 828 |
preloadPrev(index - 1); |
| 829 |
}); |
| 830 |
} |
| 831 |
|
| 832 |
function bind(element, event, callback, options) { |
| 833 |
if (element.addEventListener) { |
| 834 |
element.addEventListener(event, callback, options); |
| 835 |
} |
| 836 |
else { |
| 837 |
// IE8 fallback |
| 838 |
element.attachEvent('on' + event, function (event) { |
| 839 |
// `event` and `event.target` are not provided in IE8 |
| 840 |
event = event || window.event; |
| 841 |
event.target = event.target || event.srcElement; |
| 842 |
callback(event); |
| 843 |
}); |
| 844 |
} |
| 845 |
} |
| 846 |
|
| 847 |
function unbind(element, event, callback, options) { |
| 848 |
if (element.removeEventListener) { |
| 849 |
element.removeEventListener(event, callback, options); |
| 850 |
} |
| 851 |
else { |
| 852 |
// IE8 fallback |
| 853 |
element.detachEvent('on' + event, callback); |
| 854 |
} |
| 855 |
} |
| 856 |
|
| 857 |
function getByID(id) { |
| 858 |
return document.getElementById(id); |
| 859 |
} |
| 860 |
|
| 861 |
function create(element) { |
| 862 |
return document.createElement(element); |
| 863 |
} |
| 864 |
|
| 865 |
function destroyPlugin() { |
| 866 |
unbindEvents(); |
| 867 |
clearCachedData(); |
| 868 |
unbind(document, 'keydown', keyDownHandler); |
| 869 |
document.getElementsByTagName('body')[0].removeChild(document.getElementById('baguetteBox-overlay')); |
| 870 |
data = {}; |
| 871 |
currentGallery = []; |
| 872 |
currentIndex = 0; |
| 873 |
} |
| 874 |
|
| 875 |
return { |
| 876 |
run: run, |
| 877 |
show: show, |
| 878 |
showNext: showNextImage, |
| 879 |
showPrevious: showPreviousImage, |
| 880 |
hide: hideOverlay, |
| 881 |
destroy: destroyPlugin |
| 882 |
}; |
| 883 |
})); |
| 884 |
|
