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NewEduCoderBuild/51572.340b4700.async.js

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e=this.getParentElement(this.scrollComponent);e.scrollTop=e.scrollHeight-this.beforeScrollHeight+this.beforeScrollTop,this.loadMore=!1}this.attachScrollListener()}},{key:"componentWillUnmount",value:function(){this.detachScrollListener(),this.detachMousewheelListener()}},{key:"isPassiveSupported",value:function(){var e=!1,t={get passive(){e=!0}};try{document.addEventListener("test",null,t),document.removeEventListener("test",null,t)}catch(e){}return e}},{key:"eventListenerOptions",value:function(){var e=this.props.useCapture;return this.isPassiveSupported()&&(e={useCapture:this.props.useCapture,passive:!0}),e}},{key:"setDefaultLoader",value:function(e){this.defaultLoader=e}},{key:"detachMousewheelListener",value:function(){var e=window;!1===this.props.useWindow&&(e=this.scrollComponent.parentNode),e.removeEventListener("mousewheel",this.mousewheelListener,this.options?this.options:this.props.useCapture)}},{key:"detachScrollListener",value:function(){var e=window;!1===this.props.useWindow&&(e=this.getParentElement(this.scrollComponent)),e.removeEventListener("scroll",this.scrollListener,this.options?this.options:this.props.useCapture),e.removeEventListener("resize",this.scrollListener,this.options?this.options:this.props.useCapture)}},{key:"getParentElement",value:function(e){var t=this.props.getScrollParent&&this.props.getScrollParent();return null!=t?t:e&&e.parentNode}},{key:"filterProps",value:function(e){return e}},{key:"attachScrollListener",value:function(){var e=this.getParentElement(this.scrollComponent);if(this.props.hasMore&&e){var t=window;!1===this.props.useWindow&&(t=e),t.addEventListener("mousewheel",this.mousewheelListener,this.options?this.options:this.props.useCapture),t.addEventListener("scroll",this.scrollListener,this.options?this.options:this.props.useCapture),t.addEventListener("resize",this.scrollListener,this.options?this.options:this.props.useCapture),this.props.initialLoad&&this.scrollListener()}}},{key:"mousewheelListener",value:function(e){1!==e.deltaY||this.isPassiveSupported()||e.preventDefault()}},{key:"scrollListener",value:function(){var e=this.scrollComponent,t=window,o=this.getParentElement(e),n=void 0;if(this.props.useWindow){var r=document.documentElement||document.body.parentNode||document.body,a=void 0!==t.pageYOffset?t.pageYOffset:r.scrollTop;n=this.props.isReverse?a:this.calculateOffset(e,a)}else n=this.props.isReverse?o.scrollTop:e.scrollHeight-o.scrollTop-o.clientHeight;n<Number(this.props.threshold)&&e&&null!==e.offsetParent&&(this.detachScrollListener(),this.beforeScrollHeight=o.scrollHeight,this.beforeScrollTop=o.scrollTop,"function"==typeof this.props.loadMore&&(this.props.loadMore(this.pageLoaded+=1),this.loadMore=!0))}},{key:"calculateOffset",value:function(e,t){return e?this.calculateTopPosition(e)+(e.offsetHeight-t-window.innerHeight):0}},{key:"calculateTopPosition",value:function(e){return e?e.offsetTop+this.calculateTopPosition(e.offsetParent):0}},{key:"render",value:function(){var e=this,t=this.filterProps(this.props),o=t.children,n=t.element,r=t.hasMore,i=(t.initialLoad,t.isReverse),l=t.loader,s=(t.loadMore,t.pageStart,t.ref),c=(t.threshold,t.useCapture,t.useWindow,t.getScrollParent,function(e,t){var o={};for(var n in e)t.indexOf(n)>=0||Object.prototype.hasOwnProperty.call(e,n)&&(o[n]=e[n]);return o}(t,["children","element","hasMore","initialLoad","isReverse","loader","loadMore","pageStart","ref","threshold","useCapture","useWindow","getScrollParent"]));c.ref=function(t){e.scrollComponent=t,s&&s(t)};var u=[o];return r&&(l?i?u.unshift(l):u.push(l):this.defaultLoader&&(i?u.unshift(this.defaultLoader):u.push(this.defaultLoader))),a.default.createElement(n,c,u)}}]),t}(r.Component);s.propTypes={children:i.default.node.isRequired,element:i.default.node,hasMore:i.default.bool,initialLoad:i.default.bool,isReverse:i.default.bool,loader:i.default.node,loadMore:i.default.func.isRequired,pageStart:i.default.number,ref:i.default.func,getScrollParent:i.default.func,threshold:i.default.number,useCapture:i.default.bool,useWindow:i.default.bool},s.defaultProps={element:"div",hasMore:!1,initialLoad:!0,pageStart:0,ref:null,threshold:250,useWindow:!0,isReverse:!1,useCapture:!1,loader:null,getScrollParent:null},t.default=s,e.exports=t.default},26724:function(e,t,o){e.exports=o(51581)},98040:function(e){e.exports=function(){var e=document.getSelection();if(!e.rangeCount)return function(){};for(var t=document.activeElement,o=[],n=0;n<e.rangeCount;n++)o.push(e.getRangeAt(n));switch(t.tagName.toUpperCase()){case"INPUT":case"TEXTAREA":t.blur();break;default:t=null}return e.removeAllRanges(),function(){"Caret"===e.type&&e.removeAllRanges(),e.rangeCount||o.forEach((function(t){e.addRange(t)})),t&&t.focus()}}}}]);