https://www.heimat-lohmar.de/typo3conf/ext/lr_virtual_museum/Resources/Public/Js/jquery.lazy.min.1780931400.js

1/*!
2 * jQuery & Zepto Lazy - v1.7.10
3 * http://jquery.eisbehr.de/lazy/
4 *
5 * Copyright 2012 - 2018, Daniel 'Eisbehr' Kern
6 *
7 * Dual licensed under the MIT and GPL-2.0 licenses:
8 * http://www.opensource.org/licenses/mit-license.php
9 * http://www.gnu.org/licenses/gpl-2.0.html
10 *
11 * $("img.lazy").lazy();
12 */
13!function(window,undefined){"use strict";var $=window.jQuery||window.Zepto,lazyInstanceId=0,windowLoaded=!1;function _executeLazy(instance,config,items,events,namespace){var _awaitingAfterLoad=0,_actualWidth=-1,_actualHeight=-1,_isRetinaDisplay=!1,_afterLoad="afterLoad",_load="load",_error="error",_img="img",_src="src",_srcset="srcset",_sizes="sizes",_backgroundImage="background-image";function _initialize(){_isRetinaDisplay=window.devicePixelRatio>1,items=_prepareItems(items),config.delay>=0&&setTimeout((function(){_lazyLoadItems(!0)}),config.delay),(config.delay<0||config.combined)&&(events.e=_throttle(config.throttle,(function(event){"resize"===event.type&&(_actualWidth=_actualHeight=-1),_lazyLoadItems(event.all)})),events.a=function(additionalItems){additionalItems=_prepareItems(additionalItems),items.push.apply(items,additionalItems)},events.g=function(){return items=$(items).filter((function(){return!$(this).data(config.loadedName)}))},events.f=function(forcedItems){for(var i=0;i<forcedItems.length;i++){var item=items.filter((function(){return this===forcedItems[i]}));item.length&&_lazyLoadItems(!1,item)}},_lazyLoadItems(),$(config.appendScroll).on("scroll."+namespace+" resize."+namespace,events.e))}function _prepareItems(items){for(var defaultImage=config.defaultImage,placeholder=config.placeholder,imageBase=config.imageBase,srcsetAttribute=config.srcsetAttribute,loaderAttribute=config.loaderAttribute,forcedTags=config._f||{},i=0,l=(items=$(items).filter((function(){var element=$(this),tag=_getElementTagName(this);return!element.data(config.handledName)&&(element.attr(config.attribute)||element.attr(srcsetAttribute)||element.attr(loaderAttribute)||void 0!==forcedTags[tag])})).data("plugin_"+config.name,instance)).length;i<l;i++){var element=$(items[i]),tag=_getElementTagName(items[i]),elementImageBase=element.attr(config.imageBaseAttribute)||imageBase;tag===_img&&elementImageBase&&element.attr(srcsetAttribute)&&element.attr(srcsetAttribute,_getCorrectedSrcSet(element.attr(srcsetAttribute),elementImageBase)),void 0===forcedTags[tag]||element.attr(loaderAttribute)||element.attr(loaderAttribute,forcedTags[tag]),tag===_img&&defaultImage&&!element.attr(_src)?element.attr(_src,defaultImage):tag===_img||!placeholder||element.css(_backgroundImage)&&"none"!==element.css(_backgroundImage)||element.css(_backgroundImage,"url('"+placeholder+"')")}return items}function _lazyLoadItems(allItems,forced){if(items.length){for(var elements=forced||items,loadTriggered=!1,imageBase=config.imageBase||"",srcsetAttribute=config.srcsetAttribute,handledName=config.handledName,i=0;i<elements.length;i++)if(allItems||forced||_isInLoadableArea(elements[i])){var element=$(elements[i]),tag=_getElementTagName(elements[i]),attribute=element.attr(config.attribute),elementImageBase=element.attr(config.imageBaseAttribute)||imageBase,customLoader=element.attr(config.loaderAttribute);element.data(handledName)||config.visibleOnly&&!element.is(":visible")||!((attribute||element.attr(srcsetAttribute))&&(tag===_img&&(elementImageBase+attribute!==element.attr(_src)||element.attr(srcsetAttribute)!==element.attr(_srcset))||tag!==_img&&elementImageBase+attribute!==element.css(_backgroundImage))||customLoader)||(loadTriggered=!0,element.data(handledName,!0),_handleItem(element,tag,elementImageBase,customLoader))}loadTriggered&&(items=$(items).filter((function(){return!$(this).data(handledName)})))}else config.autoDestroy&&instance.destroy()}function _handleItem(element,tag,imageBase,customLoader){++_awaitingAfterLoad;var errorCallback=function(){_triggerCallback("onError",element),_reduceAwaiting(),errorCallback=$.noop};_triggerCallback("beforeLoad",element);var srcAttribute=config.attribute,srcsetAttribute=config.srcsetAttribute,sizesAttribute=config.sizesAttribute,retinaAttribute=config.retinaAttribute,removeAttribute=config.removeAttribute,loadedName=config.loadedName,elementRetina=element.attr(retinaAttribute);if(customLoader){var loadCallback=function(){removeAttribute&&element.removeAttr(config.loaderAttribute),element.data(loadedName,!0),_triggerCallback(_afterLoad,element),setTimeout(_reduceAwaiting,1),loadCallback=$.noop};element.off(_error).one(_error,errorCallback).one(_load,loadCallback),_triggerCallback(customLoader,element,(function(response){response?(element.off(_load),loadCallback()):(element.off(_error),errorCallback())}))||element.trigger(_error)}else{var imageObj=$(new Image);imageObj.one(_error,errorCallback).one(_load,(function(){element.hide(),tag===_img?element.attr(_sizes,imageObj.attr(_sizes)).attr(_srcset,imageObj.attr(_srcset)).attr(_src,imageObj.attr(_src)):element.css(_backgroundImage,"url('"+imageObj.attr(_src)+"')"),element[config.effect](config.effectTime),removeAttribute&&(element.removeAttr(srcAttribute+" "+srcsetAttribute+" "+retinaAttribute+" "+config.imageBaseAttribute),sizesAttribute!==_sizes&&element.removeAttr(sizesAttribute)),element.data(loadedName,!0),_triggerCallback(_afterLoad,element),imageObj.remove(),_reduceAwaiting()}));var imageSrc=(_isRetinaDisplay&&elementRetina?elementRetina:element.attr(srcAttribute))||"";imageObj.attr(_sizes,element.attr(sizesAttribute)).attr(_srcset,element.attr(srcsetAttribute)).attr(_src,imageSrc?imageBase+imageSrc:null),imageObj.complete&&imageObj.trigger(_load)}}function _isInLoadableArea(element){var elementBound=element.getBoundingClientRect(),direction=config.scrollDirection,threshold=config.threshold,vertical=_getActualHeight()+threshold>elementBound.top&&-threshold<elementBound.bottom,horizontal=_getActualWidth()+threshold>elementBound.left&&-threshold<elementBound.right;return"vertical"===direction?vertical:"horizontal"===direction?horizontal:vertical&&horizontal}function _getActualWidth(){return _actualWidth>=0?_actualWidth:_actualWidth=$(window).width()}function _getActualHeight(){return _actualHeight>=0?_actualHeight:_actualHeight=$(window).height()}function _getElementTagName(element){return element.tagName.toLowerCase()}function _getCorrectedSrcSet(srcset,imageBase){if(imageBase){var entries=srcset.split(",");srcset="";for(var i=0,l=entries.length;i<l;i++)srcset+=imageBase+entries[i].trim()+(i!==l-1?",":"")}return srcset}function _throttle(delay,callback){var timeout,lastExecute=0;

13return function(event,ignoreThrottle){var elapsed=+new Date-lastExecute;function run(){lastExecute=+new Date,callback.call(instance,event)}timeout&&clearTimeout(timeout),elapsed>delay||!config.enableThrottle||ignoreThrottle?run():timeout=setTimeout(run,delay-elapsed)}}function _reduceAwaiting(){--_awaitingAfterLoad,items.length||_awaitingAfterLoad||_triggerCallback("onFinishedAll")}function _triggerCallback(callback,element,args){return!!(callback=config[callback])&&(callback.apply(instance,[].slice.call(arguments,1)),!0)}"event"===config.bind||windowLoaded?_initialize():$(window).on("load."+namespace,_initialize)}function LazyPlugin(elements,settings){var _instance=this,_config=$.extend({},_instance.config,settings),_events={},_namespace=_config.name+"-"+ ++lazyInstanceId;return _instance.config=function(entryName,value){return void 0===value?_config[entryName]:(_config[entryName]=value,_instance)},_instance.addItems=function(items){return _events.a&&_events.a("string"===$.type(items)?$(items):items),_instance},_instance.getItems=function(){return _events.g?_events.g():{}},_instance.update=function(useThrottle){return _events.e&&_events.e({},!useThrottle),_instance},_instance.force=function(items){return _events.f&&_events.f("string"===$.type(items)?$(items):items),_instance},_instance.loadAll=function(){return _events.e&&_events.e({all:!0},!0),_instance},_instance.destroy=function(){$(_config.appendScroll).off("."+_namespace,_events.e),$(window).off("."+_namespace),_events={}},_executeLazy(_instance,_config,elements,_events,_namespace),_config.chainable?elements:_instance}$.fn.Lazy=$.fn.lazy=function(settings){return new LazyPlugin(this,settings)},$.Lazy=$.lazy=function(names,elements,loader){if($.isFunction(elements)&&(loader=elements,elements=[]),$.isFunction(loader)){names=$.isArray(names)?names:[names],elements=$.isArray(elements)?elements:[elements];for(var config=LazyPlugin.prototype.config,forced=config._f||(config._f={}),i=0,l=names.length;i<l;i++)(void 0===config[names[i]]||$.isFunction(config[names[i]]))&&(config[names[i]]=loader);for(var c=0,a=elements.length;c<a;c++)forced[elements[c]]=names[0]}},LazyPlugin.prototype.config={name:"lazy",chainable:!0,autoDestroy:!0,bind:"load",threshold:500,visibleOnly:!1,appendScroll:window,scrollDirection:"both",imageBase:null,defaultImage:"data:image/gif;base64,R0lGODlhAQABAIAAAP///wAAACH5BAEAAAAALAAAAAABAAEAAAICRAEAOw==",placeholder:null,delay:-1,combined:!1,attribute:"data-src",srcsetAttribute:"data-srcset",sizesAttribute:"data-sizes",retinaAttribute:"data-retina",loaderAttribute:"data-loader",imageBaseAttribute:"data-imagebase",removeAttribute:!0,handledName:"handled",loadedName:"loaded",effect:"show",effectTime:0,enableThrottle:!0,throttle:250,beforeLoad:void 0,afterLoad:void 0,onError:void 0,onFinishedAll:void 0},$(window).on("load",(function(){windowLoaded=!0}))}(window);