!function(global,factory){if("function"==typeof define&&define.amd)define(["module","exports"],factory);else if("undefined"!=typeof exports)factory(module,exports);else{var mod={exports:{}};factory(mod,mod.exports),global.WOW=mod.exports}}(this,(function(module,exports){"use strict";var _class,_temp;function _classCallCheck(instance,Constructor){if(!(instance instanceof Constructor))throw new TypeError("Cannot call a class as a function")}Object.defineProperty(exports,"__esModule",{value:!0});var _createClass=function(){function defineProperties(target,props){for(var i=0;i<props.length;i++){var descriptor=props[i];descriptor.enumerable=descriptor.enumerable||!1,descriptor.configurable=!0,"value"in descriptor&&(descriptor.writable=!0),Object.defineProperty(target,descriptor.key,descriptor)}}return function(Constructor,protoProps,staticProps){return protoProps&&defineProperties(Constructor.prototype,protoProps),staticProps&&defineProperties(Constructor,staticProps),Constructor}}();function isIn(needle,haystack){return haystack.indexOf(needle)>=0}function extend(custom,defaults){for(var key in defaults)if(null==custom[key]){var value=defaults[key];custom[key]=value}return custom}function isMobile(agent){return/Android|webOS|iPhone|iPad|iPod|BlackBerry|IEMobile|Opera Mini/i.test(agent)}function createEvent(event){var bubble=!(arguments.length<=1||void 0===arguments[1])&&arguments[1],cancel=!(arguments.length<=2||void 0===arguments[2])&&arguments[2],detail=arguments.length<=3||void 0===arguments[3]?null:arguments[3],customEvent=void 0;return null!=document.createEvent?(customEvent=document.createEvent("CustomEvent")).initCustomEvent(event,bubble,cancel,detail):null!=document.createEventObject?(customEvent=document.createEventObject()).eventType=event:customEvent.eventName=event,customEvent}function emitEvent(elem,event){null!=elem.dispatchEvent?elem.dispatchEvent(event):event in(null!=elem)?elem[event]():"on"+event in(null!=elem)&&elem["on"+event]()}function addEvent(elem,event,fn){null!=elem.addEventListener?elem.addEventListener(event,fn,!1):null!=elem.attachEvent?elem.attachEvent("on"+event,fn):elem[event]=fn}function removeEvent(elem,event,fn){null!=elem.removeEventListener?elem.removeEventListener(event,fn,!1):null!=elem.detachEvent?elem.detachEvent("on"+event,fn):delete elem[event]}function getInnerHeight(){return"innerHeight"in window?window.innerHeight:document.documentElement.clientHeight}var WeakMap=window.WeakMap||window.MozWeakMap||function(){function WeakMap(){_classCallCheck(this,WeakMap),this.keys=[],this.values=[]}return _createClass(WeakMap,[{key:"get",value:function get(key){for(var i=0;i<this.keys.length;i++){var item;if(this.keys[i]===key)return this.values[i]}}},{key:"set",value:function set(key,value){for(var i=0;i<this.keys.length;i++){var item;if(this.keys[i]===key)return this.values[i]=value,this}return this.keys.push(key),this.values.push(value),this}}]),WeakMap}(),MutationObserver=window.MutationObserver||window.WebkitMutationObserver||window.MozMutationObserver||(_temp=_class=function(){function MutationObserver(){_classCallCheck(this,MutationObserver),"undefined"!=typeof console&&null!==console&&(console.warn("MutationObserver is not supported by your browser."),console.warn("WOW.js cannot detect dom mutations, please call .sync() after loading new content."))}return _createClass(MutationObserver,[{key:"observe",value:function observe(){}}]),MutationObserver}(),_class.notSupported=!0,_temp),getComputedStyle=window.getComputedStyle||function getComputedStyle(el){var getComputedStyleRX=/(\-([a-z]){1})/g;return{getPropertyValue:function getPropertyValue(prop){"float"===prop&&(prop="styleFloat"),getComputedStyleRX.test(prop)&&prop.replace(getComputedStyleRX,(function(_,_char){return _char.toUpperCase()}));var currentStyle=el.currentStyle;return(null!=currentStyle?currentStyle[prop]:void 0)||null}}},WOW=function(){function WOW(){var options=arguments.length<=0||void 0===arguments[0]?{}:arguments[0];_classCallCheck(this,WOW),this.defaults={boxClass:"wow",animateClass:"animated",offset:0,mobile:!1,live:!0,callback:null,scrollContainer:null,resetAnimation:!0},this.animate=function animateFactory(){return"requestAnimationFrame"in window?function(callback){return window.requestAnimationFrame(callback)}:function(callback){return callback()}}(),this.vendors=["moz","webkit"],this.start=this.start.bind(this),this.resetAnimation=this.resetAnimation.bind(this),this.scrollHandler=this.scrollHandler.bind(this),this.scrollCallback=this.scrollCallback.bind(this),this.scrolled=!0,this.config=extend(options,this.defaults),null!=options.scrollContainer&&(this.config.scrollContainer=document.querySelector(options.scrollContainer)),this.animationNameCache=new WeakMap,this.wowEvent=createEvent(this.config.boxClass)}return _createClass(WOW,[{key:"init",value:function init(){this.element=window.document.documentElement,isIn(document.readyState,["interactive","complete"])?this.start():addEvent(document,"DOMContentLoaded",this.start),this.finished=[]}},{key:"start",value:function start(){var _this=this,mut;if(this.stopped=!1,this.boxes=[].slice.call(this.element.querySelectorAll("."+this.config.boxClass)),this.all=this.boxes.slice(0),this.boxes.length)if(this.disabled())this.resetStyle();else for(var i=0;i<this.boxes.length;i++){var box=this.boxes[i];this.applyStyle(box,!0)}(this.disabled()||(addEvent(this.config.scrollContainer||window,"scroll",this.scrollHandler),addEvent(window,"resize",this.scrollHandler),this.interval=setInterval(this.scrollCallback,50)),this.config.live)&&new MutationObserver((function(records){for(var j=0;j<records.length;j++)for(var record=records[j],k=0;k<record.addedNodes.length;k++){var node=record.addedNodes[k];_this.doSync(node)}})).observe(document.body,{childList:!0,subtree:!0})}},{key:"stop",value:function stop(){this.stopped=!0,removeEvent(this.config.scrollContainer||window,"scroll",this.scrollHandler),removeEvent(window,"resize",this.scrollHandler),null!=this.interval&&clearInterval(this.interval)}},{key:"sync",value:function sync(){MutationObserver.notSupported&&this.doSync(this.element)}},{key:"doSync",value:function doSync(element){if(null==element&&(element=this.element),1===element.nodeType)for(var iterable=(element=element.parentNode||element).querySelectorAll("."+this.config.boxClass),i=0;i<iterable.length;i++){var box=iterable[i];isIn(box,this.all)||(this.boxes.push(box),this.all.push(box),this.stopped||this.disabled()?this.resetStyle():this.applyStyle(box,!0),this.scrolled=!0)}}},{key:"show",value:function show(box){return this.applyStyle(box),box.className=box.className+" "+this.config.animateClass,null!=this.config.callback&&this.config.callback(box),emitEvent(box,this.wowEvent),this.config.resetAnimation&&(addEvent(box,"animationend",this.resetAnimation),addEvent(box,"oanimationend",this.resetAnimation),addEvent(box,"webkitAnimationEnd",this.resetAnimation),addEvent(box,"MSAnimationEnd",this.resetAnimation)),box}},{key:"applyStyle",value:function applyStyle(box,hidden){var _this2=this,duration=box.getAttribute("data-wow-duration"),delay=box.getAttribute("data-wow-delay"),iteration=box.getAttribute("data-wow-iteration");return this.animate((function(){return _this2.customStyle(box,hidden,duration,delay,iteration)}))}},{key:"resetStyle",value:function resetStyle(){for(var i=0;i<this.boxes.length;i++){var box;this.boxes[i].style.visibility="visible"}}},{key:"resetAnimation",value:function resetAnimation(event){if(event.type.toLowerCase().indexOf("animationend")>=0){var target=event.target||event.srcElement;target.className=target.className.replace(this.config.animateClass,"").trim()}}},{key:"customStyle",value:function customStyle(box,hidden,duration,delay,iteration){return hidden&&this.cacheAnimationName(box),box.style.visibility=hidden?"hidden":"visible",duration&&this.vendorSet(box.style,{animationDuration:duration}),delay&&this.vendorSet(box.style,{animationDelay:delay}),iteration&&this.vendorSet(box.style,{animationIterationCount:iteration}),this.vendorSet(box.style,{animationName:hidden?"none":this.cachedAnimationName(box)}),box}},{key:"vendorSet",value:function vendorSet(elem,properties){for(var name in properties)if(properties.hasOwnProperty(name)){var value=properties[name];elem[""+name]=value;for(var i=0;i<this.vendors.length;i++){var vendor;elem[""+this.vendors[i]+name.charAt(0).toUpperCase()+name.substr(1)]=value}}}},{key:"vendorCSS",value:function vendorCSS(elem,property){for(var style=getComputedStyle(elem),result=style.getPropertyCSSValue(property),i=0;i<this.vendors.length;i++){var vendor=this.vendors[i];result=result||style.getPropertyCSSValue("-"+vendor+"-"+property)}return result}},{key:"animationName",value:function animationName(box){var aName=void 0;try{aName=this.vendorCSS(box,"animation-name").cssText}catch(error){aName=getComputedStyle(box).getPropertyValue("animation-name")}return"none"===aName?"":aName}},{key:"cacheAnimationName",value:function cacheAnimationName(box){return this.animationNameCache.set(box,this.animationName(box))}},{key:"cachedAnimationName",value:function cachedAnimationName(box){return this.animationNameCache.get(box)}},{key:"scrollHandler",value:function scrollHandler(){this.scrolled=!0}},{key:"scrollCallback",value:function scrollCallback(){if(this.scrolled){this.scrolled=!1;for(var results=[],i=0;i<this.boxes.length;i++){var box=this.boxes[i];if(box){if(this.isVisible(box)){this.show(box);continue}results.push(box)}}this.boxes=results,this.boxes.length||this.config.live||this.stop()}}},{key:"offsetTop",value:function offsetTop(element){for(;void 0===element.offsetTop;)element=element.parentNode;for(var top=element.offsetTop;element.offsetParent;)top+=(element=element.offsetParent).offsetTop;return top}},{key:"isVisible",value:function isVisible(box){var offset=box.getAttribute("data-wow-offset")||this.config.offset,viewTop=this.config.scrollContainer&&this.config.scrollContainer.scrollTop||window.pageYOffset,viewBottom=viewTop+Math.min(this.element.clientHeight,getInnerHeight())-offset,top=this.offsetTop(box),bottom=top+box.clientHeight;return top<=viewBottom&&bottom>=viewTop}},{key:"disabled",value:function disabled(){return!this.config.mobile&&isMobile(navigator.userAgent)}}]),WOW}();exports.default=WOW,module.exports=exports.default}));