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event;\r\n\tlet eventString = \"LazyLoad::Initialized\";\r\n\tlet instance = new classObj(options);\r\n\ttry {\r\n\t\t// Works in modern browsers\r\n\t\tevent = new CustomEvent(eventString, { detail: { instance } });\r\n\t} catch (err) {\r\n\t\t// Works in Internet Explorer (all versions)\r\n\t\tevent = document.createEvent(\"CustomEvent\");\r\n\t\tevent.initCustomEvent(eventString, false, false, { instance });\r\n\t}\r\n\twindow.dispatchEvent(event);\r\n};\r\n\r\n/* Auto initialization of one or more instances of lazyload, depending on the \r\n    options passed in (plain object or an array) */\r\nfunction autoInitialize(classObj, options) {\r\n\tif (!options) {\r\n\t\treturn;\r\n\t}\r\n\tif (!options.length) {\r\n\t\t// Plain object\r\n\t\tcreateInstance(classObj, options);\r\n\t} else {\r\n\t\t// Array of objects\r\n\t\tfor (let i = 0, optionsItem; (optionsItem = options[i]); i += 1) {\r\n\t\t\tcreateInstance(classObj, optionsItem);\r\n\t\t}\r\n\t}\r\n}\n\nconst replaceExtToWebp = 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className + \"(\\\\s+|$)\"), \" \").\r\n\t\treplace(/^\\s+/, \"\").\r\n\t\treplace(/\\s+$/, \"\");\r\n};\n\nconst callbackIfSet = (callback, argument) => {\r\n\tif (callback) {\r\n\t\tcallback(argument);\r\n\t}\r\n};\n\nconst genericLoadEventName = \"load\";\r\nconst mediaLoadEventName = \"loadeddata\";\r\nconst errorEventName = \"error\";\r\n\r\nconst addEventListener = (element, eventName, handler) => {\r\n\telement.addEventListener(eventName, handler);\r\n};\r\n\r\nconst removeEventListener = (element, eventName, handler) => {\r\n\telement.removeEventListener(eventName, handler);\r\n};\r\n\r\nconst addAllEventListeners = (element, loadHandler, errorHandler) => {\r\n\taddEventListener(element, genericLoadEventName, loadHandler);\r\n\taddEventListener(element, mediaLoadEventName, loadHandler);\r\n\taddEventListener(element, errorEventName, errorHandler);\r\n};\r\n\r\nconst removeAllEventListeners = (element, loadHandler, errorHandler) => {\r\n\tremoveEventListener(element, genericLoadEventName, loadHandler);\r\n\tremoveEventListener(element, mediaLoadEventName, loadHandler);\r\n\tremoveEventListener(element, errorEventName, errorHandler);\r\n};\r\n\r\nconst eventHandler = function(event, success, settings) {\r\n\tconst className = success ? settings.class_loaded : settings.class_error;\r\n\tconst callback = success ? settings.callback_load : settings.callback_error;\r\n\tconst element = event.target;\r\n\r\n\tremoveClass(element, settings.class_loading);\r\n\taddClass(element, className);\r\n\tcallbackIfSet(callback, element);\r\n};\r\n\r\nconst addOneShotEventListeners = (element, settings) => {\r\n\tconst loadHandler = event => {\r\n\t\teventHandler(event, true, settings);\r\n\t\tremoveAllEventListeners(element, loadHandler, errorHandler);\r\n\t};\r\n\tconst errorHandler = event => {\r\n\t\teventHandler(event, false, settings);\r\n\t\tremoveAllEventListeners(element, loadHandler, errorHandler);\r\n\t};\r\n\taddAllEventListeners(element, loadHandler, errorHandler);\r\n};\n\nconst managedTags = [\"IMG\", \"IFRAME\", \"VIDEO\"];\r\n\r\nconst loadAndUnobserve = (element, observer, settings) => {\r\n\trevealElement(element, settings);\r\n\tobserver.unobserve(element);\r\n};\r\n\r\nconst cancelDelayLoad = element => {\r\n\tvar timeoutId = getTimeoutData(element);\r\n\tif (!timeoutId) {\r\n\t\treturn; // do nothing if timeout doesn't exist\r\n\t}\r\n\tclearTimeout(timeoutId);\r\n\tsetTimeoutData(element, null);\r\n};\r\n\r\nconst delayLoad = (element, observer, settings) => {\r\n\tvar loadDelay = settings.load_delay;\r\n\tvar timeoutId = getTimeoutData(element);\r\n\tif (timeoutId) {\r\n\t\treturn; // do nothing if timeout already set\r\n\t}\r\n\ttimeoutId = setTimeout(function() {\r\n\t\tloadAndUnobserve(element, observer, settings);\r\n\t\tcancelDelayLoad(element);\r\n\t}, loadDelay);\r\n\tsetTimeoutData(element, timeoutId);\r\n};\r\n\r\nfunction revealElement(element, settings, force) {\r\n\tif (!force && getWasProcessedData(element)) {\r\n\t\treturn; // element has already been processed and force wasn't true\r\n\t}\r\n\tcallbackIfSet(settings.callback_enter, element);\r\n\tif (managedTags.indexOf(element.tagName) > -1) {\r\n\t\taddOneShotEventListeners(element, settings);\r\n\t\taddClass(element, settings.class_loading);\r\n\t}\r\n\tsetSources(element, settings);\r\n\tsetWasProcessedData(element);\r\n\tcallbackIfSet(settings.callback_set, element);\r\n}\n\n/* entry.isIntersecting needs fallback because is null on some versions of MS Edge, and\r\n   entry.intersectionRatio is not enough alone because it could be 0 on some intersecting elements */\r\nconst isIntersecting = entry =>\r\n\tentry.isIntersecting || entry.intersectionRatio > 0;\r\n\r\nconst getObserverSettings = settings => ({\r\n\troot: settings.container === document ? null : settings.container,\r\n\trootMargin: settings.thresholds || settings.threshold + \"px\"\r\n});\n\nconst LazyLoad = function(customSettings, elements) {\r\n\tthis._settings = getInstanceSettings(customSettings);\r\n\tthis._setObserver();\r\n\tthis.update(elements);\r\n};\r\n\r\nLazyLoad.prototype = {\r\n\t_manageIntersection: function(entry) {\r\n\t\tvar observer = this._observer;\r\n\t\tvar settings = this._settings;\r\n\t\tvar loadDelay = this._settings.load_delay;\r\n\t\tvar element = entry.target;\r\n\t\tif (isIntersecting(entry)) {\r\n\t\t\tif (!loadDelay) {\r\n\t\t\t\tloadAndUnobserve(element, observer, settings);\r\n\t\t\t} else {\r\n\t\t\t\tdelayLoad(element, observer, settings);\r\n\t\t\t}\r\n\t\t}\r\n\r\n\t\t// Writes in and outs in a data-attribute\r\n\t\tif (!isIntersecting(entry)) {\r\n\t\t\tcancelDelayLoad(element);\r\n\t\t}\r\n\t},\r\n\t_onIntersection: function(entries) {\r\n\t\tentries.forEach(this._manageIntersection.bind(this));\r\n\t\tthis._elements = purgeElements(this._elements);\r\n\t},\r\n\t_setObserver: function() {\r\n\t\tif (!supportsIntersectionObserver) {\r\n\t\t\treturn;\r\n\t\t}\r\n\t\tthis._observer = new IntersectionObserver(\r\n\t\t\tthis._onIntersection.bind(this),\r\n\t\t\tgetObserverSettings(this._settings)\r\n\t\t);\r\n\t},\r\n\r\n\tloadAll: function() {\r\n\t\tthis._elements.forEach(element => {\r\n\t\t\tthis.load(element);\r\n\t\t});\r\n\t\tthis._elements = purgeElements(this._elements);\r\n\t},\r\n\r\n\tupdate: function(elements) {\r\n\t\tconst settings = this._settings;\r\n\t\tconst nodeSet =\r\n\t\t\telements ||\r\n\t\t\tsettings.container.querySelectorAll(settings.elements_selector);\r\n\r\n\t\tthis._elements = purgeElements(Array.prototype.slice.call(nodeSet)); // nodeset to array for IE compatibility\r\n\r\n\t\tif (isBot || !this._observer) {\r\n\t\t\tthis.loadAll();\r\n\t\t\treturn;\r\n\t\t}\r\n\r\n\t\tthis._elements.forEach(element => {\r\n\t\t\tthis._observer.observe(element);\r\n\t\t});\r\n\t},\r\n\r\n\tdestroy: function() {\r\n\t\tif (this._observer) {\r\n\t\t\tpurgeElements(this._elements).forEach(element => {\r\n\t\t\t\tthis._observer.unobserve(element);\r\n\t\t\t});\r\n\t\t\tthis._observer = null;\r\n\t\t}\r\n\t\tthis._elements = null;\r\n\t\tthis._settings = null;\r\n\t},\r\n\r\n\tload: function(element, force) {\r\n\t\trevealElement(element, this._settings, force);\r\n\t}\r\n};\r\n\r\n/* Automatic instances creation if required (useful for async script loading) */\r\nif (runningOnBrowser) {\r\n\tautoInitialize(LazyLoad, window.lazyLoadOptions);\r\n}\n\nreturn LazyLoad;\n\n})));\n"]}