var _extends=Object.assign||function(e){for(var t=1;t<arguments.length;t++){var n=arguments[t];for(var r in n)Object.prototype.hasOwnProperty.call(n,r)&&(e[r]=n[r])}return e},_typeof="function"==typeof Symbol&&"symbol"==typeof Symbol.iterator?function(e){return typeof e}:function(e){return e&&"function"==typeof Symbol&&e.constructor===Symbol&&e!==Symbol.prototype?"symbol":typeof e};!function(e,t){"object"===("undefined"==typeof exports?"undefined":_typeof(exports))&&"undefined"!=typeof module?module.exports=t():"function"==typeof define&&define.amd?define(t):e.LazyLoad=t()}(this,function(){"use strict";var e=function(e){var t={elements_selector:"img",container:document,threshold:300,data_src:"src",data_srcset:"srcset",class_loading:"loading",class_loaded:"loaded",class_error:"error",callback_load:null,callback_error:null,callback_set:null,callback_enter:null};return _extends({},t,e)},t=function(e,t){return e.getAttribute("data-"+t)},n=function(e,t,n){return e.setAttribute("data-"+t,n)},r=function(e){return e.filter(function(e){return!t(e,"was-processed")})},s=function(e,t){var n,r=new e(t);try{n=new CustomEvent("LazyLoad::Initialized",{detail:{instance:r}})}catch(e){(n=document.createEvent("CustomEvent")).initCustomEvent("LazyLoad::Initialized",!1,!1,{instance:r})}window.dispatchEvent(n)},o=function(e,n){var r=n.data_srcset,s=e.parentNode;if(s&&"PICTURE"===s.tagName)for(var o,a=0;o=s.children[a];a+=1)if("SOURCE"===o.tagName){var i=t(o,r);i&&o.setAttribute("srcset",i)}},a=function(e,n){var r=n.data_src,s=n.data_srcset,a=e.tagName,i=t(e,r);if("IMG"===a){o(e,n);var c=t(e,s);return c&&e.setAttribute("srcset",c),void(i&&e.setAttribute("src",i))}"IFRAME"!==a?i&&(e.style.backgroundImage='url("'+i+'")'):i&&e.setAttribute("src",i)},i="undefined"!=typeof window,c=i&&"IntersectionObserver"in window,l=i&&"classList"in document.createElement("p"),u=function(e,t){l?e.classList.add(t):e.className+=(e.className?" ":"")+t},d=function(e,t){l?e.classList.remove(t):e.className=e.className.replace(new RegExp("(^|\\s+)"+t+"(\\s+|$)")," ").replace(/^\s+/,"").replace(/\s+$/,"")},f=function(e,t){e&&e(t)},_=function(e,t,n){e.removeEventListener("load",t),e.removeEventListener("error",n)},v=function(e,t){var n=function n(s){m(s,!0,t),_(e,n,r)},r=function r(s){m(s,!1,t),_(e,n,r)};e.addEventListener("load",n),e.addEventListener("error",r)},m=function(e,t,n){var r=e.target;d(r,n.class_loading),u(r,t?n.class_loaded:n.class_error),f(t?n.callback_load:n.callback_error,r)},b=function(e,t){f(t.callback_enter,e),["IMG","IFRAME"].indexOf(e.tagName)>-1&&(v(e,t),u(e,t.class_loading)),a(e,t),n(e,"was-processed",!0),f(t.callback_set,e)},p=function(e){return e.isIntersecting||e.intersectionRatio>0},h=function(t,n){this._settings=e(t),this._setObserver(),this.update(n)};h.prototype={_setObserver:function(){var e=this;if(c){var t=this._settings,n={root:t.container===document?null:t.container,rootMargin:t.threshold+"px"};this._observer=new IntersectionObserver(function(t){t.forEach(function(t){if(p(t)){var n=t.target;b(n,e._settings),e._observer.unobserve(n)}}),e._elements=r(e._elements)},n)}},update:function(e){var t=this,n=this._settings,s=e||n.container.querySelectorAll(n.elements_selector);this._elements=r(Array.prototype.slice.call(s)),this._observer?this._elements.forEach(function(e){t._observer.observe(e)}):(this._elements.forEach(function(e){b(e,n)}),this._elements=r(this._elements))},destroy:function(){var e=this;this._observer&&(r(this._elements).forEach(function(t){e._observer.unobserve(t)}),this._observer=null),this._elements=null,this._settings=null}};var y=window.lazyLoadOptions;return i&&y&&function(e,t){if(t.length)for(var n,r=0;n=t[r];r+=1)s(e,n);else s(e,t)}(h,y),h});
