12 lines
21 KiB
JavaScript
12 lines
21 KiB
JavaScript
/**
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* Infinite Ajax Scroll v3.1.0
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* Turn your existing pagination into infinite scrolling pages with ease
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*
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* Commercial use requires one-time purchase of a commercial license
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* https://infiniteajaxscroll.com/docs/license.html
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*
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* Copyright 2014-2023 Webcreate (Jeroen Fiege)
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* https://infiniteajaxscroll.com
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*/
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!function(t,e){"object"==typeof exports&&"undefined"!=typeof module?module.exports=e():"function"==typeof define&&define.amd?define(e):(t="undefined"!=typeof globalThis?globalThis:t||self).InfiniteAjaxScroll=e()}(this,(function(){"use strict";function t(t){return"object"==typeof window.Node?t instanceof window.Node:null!==t&&"object"==typeof t&&"number"==typeof t.nodeType&&"string"==typeof t.nodeName}function e(e,n){if(void 0===n&&(n=document),e instanceof Array)return e.filter(t);if(t(e))return[e];if(o=Object.prototype.toString.call(i=e),"object"==typeof window.NodeList?i instanceof window.NodeList:null!==i&&"object"==typeof i&&"number"==typeof i.length&&/^\[object (HTMLCollection|NodeList|Object)\]$/.test(o)&&(0===i.length||t(i[0])))return Array.prototype.slice.call(e);var i,o;if("string"==typeof e)try{var r=n.querySelectorAll(e);return Array.prototype.slice.call(r)}catch(t){return[]}return[]}var n=Object.prototype.hasOwnProperty,i=Object.prototype.toString,o=Object.defineProperty,r=Object.getOwnPropertyDescriptor,s=function(t){return"function"==typeof Array.isArray?Array.isArray(t):"[object Array]"===i.call(t)},l=function(t){if(!t||"[object Object]"!==i.call(t))return!1;var e,o=n.call(t,"constructor"),r=t.constructor&&t.constructor.prototype&&n.call(t.constructor.prototype,"isPrototypeOf");if(t.constructor&&!o&&!r)return!1;for(e in t);return void 0===e||n.call(t,e)},a=function(t,e){o&&"__proto__"===e.name?o(t,e.name,{enumerable:!0,configurable:!0,value:e.newValue,writable:!0}):t[e.name]=e.newValue},h=function(t,e){if("__proto__"===e){if(!n.call(t,e))return;if(r)return r(t,e).value}return t[e]},c=function t(){var e,n,i,o,r,c,p=arguments,u=arguments[0],d=1,f=arguments.length,m=!1;for("boolean"==typeof u&&(m=u,u=arguments[1]||{},d=2),(null==u||"object"!=typeof u&&"function"!=typeof u)&&(u={});f>d;++d)if(null!=(e=p[d]))for(n in 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new TypeError(u);return S(n)&&(i="leading"in n?!!n.leading:i,o="trailing"in n?!!n.trailing:o),E(t,e,{leading:i,maxWait:e,trailing:o})},C={item:void 0,next:void 0,prev:void 0,pagination:void 0,responseType:"document",bind:!0,scrollContainer:window,spinner:!1,logger:!0,loadOnScroll:!0,negativeMargin:0,trigger:!1,prefill:!0},P=function(t,n){var i=e(t);if(i.length>1)throw Error('Expected single element for "'+n+'"');if(0===i.length)throw Error('Element "'+t+'" not found for "'+n+'"')},j=function(t,n){if(0===e(t).length)throw Error('Element "'+t+'" not found for "'+n+'"')},N=function(t){for(var e=[],n=arguments.length-1;n-- >0;)e[n]=arguments[n+1];try{t.apply(void 0,e)}catch(t){console&&console.warn&&console.warn(t.message)}};function F(t){if(t!==window)return{x:t.scrollLeft,y:t.scrollTop};var e=void 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t=this;e(this.options.element).forEach((function(e){t.originalDisplayStyles.set(e,window.getComputedStyle(e).display),e.style.display="none"}))},ut.prototype.restore=function(){var t=this;e(this.options.element).forEach((function(e){e.style.display=t.originalDisplayStyles.get(e)||"block"}))};var dt={element:void 0,delay:600,show:function(t){t.style.opacity="1"},hide:function(t){t.style.opacity="0"}};var ft=function(t,n){!1!==n&&(this.ias=t,this.options=c({},dt,function(t){return("string"==typeof t||"object"==typeof t&&t.nodeType===Node.ELEMENT_NODE)&&(t={element:t}),t}(n)),void 0!==this.options.element&&P(this.options.element,"spinner.element"),this.element=e(this.options.element)[0],this.hideFn=this.options.hide,this.showFn=this.options.show,t.on(D,this.bind.bind(this)),t.on(D,this.hide.bind(this)))};ft.prototype.bind=function(){var t,e,n=this,i=this.ias;i.on(Y,(function(){t=+new Date,n.show()})),i.on(V,(function(){n.hide()})),i.on(H,(function(i){e=Math.max(0,n.options.delay-(+new 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vt=function(t){this.ias=t,this.pageBreaks=[],this.currentPageIndex=t.pageIndex,this.currentScrollTop=0,t.on(D,this.binded.bind(this)),t.on(Y,this.next.bind(this)),t.on(U,this.prev.bind(this)),t.on(Q,this.scrolled.bind(this)),t.on(Z,this.scrolled.bind(this))};vt.prototype.binded=function(){this.ias.sentinel()&&this.pageBreaks.push({pageIndex:this.currentPageIndex,url:""+document.location,title:document.title,sentinel:this.ias.sentinel()})},vt.prototype.next=function(){var t=this,e=""+document.location,n=document.title,i=function(t){e=t.url,t.xhr.response&&(n=t.xhr.response.title)};this.ias.once(z,i),this.ias.once(G,(function(o){t.pageBreaks.push({pageIndex:o.pageIndex,url:e,title:n,sentinel:t.ias.sentinel()}),t.update(),t.ias.off(z,i)}))},vt.prototype.prev=function(){var t=this,e=""+document.location,n=document.title,i=function(t){e=t.url,t.xhr.response&&(n=t.xhr.response.title)};this.ias.once(z,i),this.ias.once(J,(function(o){t.pageBreaks.unshift({pageIndex:o.pageIndex,url:e,title:n,sentinel:t.ias.first()}),t.update(),t.ias.off(z,i)}))},vt.prototype.scrolled=function(t){this.update(t.scroll.y)},vt.prototype.update=function(t){this.currentScrollTop=t||this.currentScrollTop;var e=function(t,e,n){for(var i=e+_(n).height,o=t.length-1;o>=0;o--)if(i>t[o].sentinel.getBoundingClientRect().bottom+e)return t[Math.min(o+1,t.length-1)];return t[0]}(this.pageBreaks,this.currentScrollTop,this.ias.scrollContainer);e&&e.pageIndex!==this.currentPageIndex&&(this.ias.emitter.emit(tt,e),this.currentPageIndex=e.pageIndex)};var yt={element:void 0,when:function(t){return!0},show:function(t){t.style.opacity="1"},hide:function(t){t.style.opacity="0"}};var bt=function(t,n){var i=this;!1!==n&&(this.ias=t,this.options=c({},yt,function(t){if(("string"==typeof t||"function"==typeof t||"object"==typeof t&&t.nodeType===Node.ELEMENT_NODE)&&(t={element:t}),"function"==typeof t.element&&(t.element=t.element()),t.when&&Array.isArray(t.when)){var e=t.when;t.when=function(t){return-1!==e.indexOf(t)}}return t}(n)),void 0!==this.options.element&&P(this.options.element,"trigger.element"),this.element=e(this.options.element)[0],this.hideFn=this.options.hide,this.showFn=this.options.show,this.voter=this.options.when,this.showing=void 0,this.enabled=void 0,t.on(D,this.bind.bind(this)),t.on(k,this.unbind.bind(this)),t.on(A,this.hit.bind(this)),t.on(Y,(function(t){return i.ias.once(M,(function(){return i.update(t.pageIndex)}))})))};function xt(t,e,n){var i=n?n.nextSibling:null,o=document.createDocumentFragment();t.forEach((function(t){o.appendChild(t)})),e.insertBefore(o,i)}function wt(t,e,n){var i=document.createDocumentFragment();t.forEach((function(t){i.appendChild(t)})),e.insertBefore(i,n)}bt.prototype.bind=function(){this.hide(),this.update(this.ias.pageIndex),this.element.addEventListener("click",this.clickHandler.bind(this))},bt.prototype.unbind=function(){this.element.removeEventListener("click",this.clickHandler.bind(this))},bt.prototype.clickHandler=function(){this.hide().then(this.ias.next.bind(this.ias))},bt.prototype.update=function(t){this.enabled=this.voter(t),this.enabled?this.ias.disableLoadOnScroll():this.ias.enableLoadOnScroll()},bt.prototype.hit=function(){this.enabled&&this.show()},bt.prototype.show=function(){if(!this.showing)return this.showing=!0,Promise.resolve(this.showFn(this.element))},bt.prototype.hide=function(){if(this.showing||void 0===this.showing)return this.showing=!1,Promise.resolve(this.hideFn(this.element))};var Ot=window.ResizeObserver,It=function(t,e){this.el=t,this.listener=e};It.prototype.observe=function(){this.el.addEventListener("resize",this.listener)},It.prototype.unobserve=function(){this.el.removeEventListener("resize",this.listener)};var Et=function(t,e){this.el=t,this.listener=e,this.ro=new Ot(this.listener)};Et.prototype.observe=function(){this.ro.observe(this.el)},Et.prototype.unobserve=function(){this.ro.unobserve()};var St=function(t,e){this.el=t,this.listener=e,this.interval=null,this.lastHeight=null};St.prototype.pollHeight=function(){var t=Math.trunc(_(this.el).height);null!==this.lastHeight&&this.lastHeight!==t&&this.listener(),this.lastHeight=t},St.prototype.observe=function(){this.interval=setInterval(this.pollHeight.bind(this),200)},St.prototype.unobserve=function(){clearInterval(this.interval)};var Tt=function(t,e){this.ias=t,this.enabled=e};Tt.prototype.prefill=function(){var t=this;if(this.enabled)return this.ias.emitter.emit(et),Promise.all([this._prefillNext(),this._prefillPrev()]).then((function(){t.ias.emitter.emit(nt),t.ias.measure()}))},Tt.prototype._prefillNext=function(){var t=this;if(0>=this.ias.distance())return this.ias.next().then((function(e){if(e)return 0>t.ias.distance()?t._prefillNext():void 0}))},Tt.prototype._prefillPrev=function(){if(this.ias.options.prev)return this.ias.prev()};var Lt=function(t,n){var i,o,r,s=this;void 0===n&&(n={}),P(t,"container"),this.container=e(t)[0],this.options=c({},C,n),this.emitter=new at,this.options.loadOnScroll?this.enableLoadOnScroll():this.disableLoadOnScroll(),this.negativeMargin=Math.abs(this.options.negativeMargin),this.scrollContainer=this.options.scrollContainer,this.options.scrollContainer!==window&&(P(this.options.scrollContainer,"options.scrollContainer"),this.scrollContainer=e(this.options.scrollContainer)[0]),this.nextHandler=ht,this.prevHandler=ct,!1===this.options.next?this.nextHandler=function(){}:"function"==typeof this.options.next&&(this.nextHandler=this.options.next),!1===this.options.prev?this.prevHandler=function(){}:"function"==typeof this.options.prev&&(this.prevHandler=this.options.prev),this.resizeObserver=(i=this,o=this.scrollContainer,r=L(st,200).bind(i),o===window?new It(o,r):Ot?new Et(o,r):(console&&console.warn&&console.warn("ResizeObserver not supported. 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l=function(){s.ready||(s.ready=!0,s.emitter.emit(K),s.bindOnReady&&s.options.bind&&s.bind())};"complete"===document.readyState||"interactive"===document.readyState?setTimeout(l,1):window.addEventListener("DOMContentLoaded",l)};return Lt.prototype.bind=function(){this.binded||(this.ready||(this.bindOnReady=!1),this.scrollContainer.addEventListener("scroll",this._scrollListener),this.resizeObserver.observe(),this.binded=!0,this.emitter.emit(D))},Lt.prototype.unbind=function(){this.binded?(this.resizeObserver.unobserve(),this.scrollContainer.removeEventListener("scroll",this._scrollListener),this.binded=!1,this.emitter.emit(k)):this.ready||this.once(D,this.unbind)},Lt.prototype.next=function(){var t=this;if(!this.hitLast){if(!this.binded)return this.ready?void 0:this.once(D,this.next);this.pause();var e=this.pageIndexNext+1;return this.emitter.emit(Y,{pageIndex:this.pageIndexNext+1}),Promise.resolve(this.nextHandler(e)).then((function(n){return t.pageIndexNext=e,n||t.emitter.emit(V),t.resume(),n})).then((function(e){return t.emitter.emit(G,{pageIndex:t.pageIndexNext}),e}))}},Lt.prototype.prev=function(){var t=this;if(this.binded&&!this.hitFirst){this.pause();var e=this.pageIndexPrev-1;return this.emitter.emit(U,{pageIndex:this.pageIndexPrev-1}),Promise.resolve(this.prevHandler(e)).then((function(n){return t.pageIndexPrev=e,t.resume(),n||t.emitter.emit($),n})).then((function(e){return t.emitter.emit(J,{pageIndex:t.pageIndexPrev}),e}))}},Lt.prototype.load=function(t){var n=this;return new Promise((function(i,o){var r=new XMLHttpRequest,s={url:t,xhr:r,method:"GET",body:null,nocache:!1,responseType:n.options.responseType,headers:{"X-Requested-With":"XMLHttpRequest"}};n.emitter.emit(q,s);var l=s.url,a=s.method,h=s.responseType,c=s.headers,p=s.body;for(var u in s.nocache||(l=l+(/\?/.test(l)?"&":"?")+(new Date).getTime()),r.onreadystatechange=function(){if(r.readyState===XMLHttpRequest.DONE)if(0===r.status);else if(200===r.status){var t=r.response;"document"===h&&(t=e(n.options.item,r.response)),n.emitter.emit(z,{items:t,url:l,xhr:r}),i({items:t,url:l,xhr:r})}else n.emitter.emit(X,{url:l,method:a,xhr:r}),o(r)},r.onerror=function(){n.emitter.emit(X,{url:l,method:a,xhr:r}),o(r)},r.open(a,l,!0),r.responseType=h,c)r.setRequestHeader(u,c[u]);r.send(p)}))},Lt.prototype.append=function(t,e){var n=this,i={items:t,parent:e=e||n.container,appendFn:xt};n.emitter.emit(H,i);return new Promise((function(o){window.requestAnimationFrame((function(){Promise.resolve(i.appendFn(i.items,i.parent,n.sentinel())).then((function(){o({items:t,parent:e})}))}))})).then((function(t){n.emitter.emit(M,t)}))},Lt.prototype.prepend=function(t,e){var n=this,i=this,o={items:t,parent:e=e||i.container,prependFn:wt};i.emitter.emit(R,o);return new Promise((function(r){window.requestAnimationFrame((function(){var s=i.first(),l=F(n.scrollContainer),a=s.getBoundingClientRect().top+l.y;Promise.resolve(o.prependFn(o.items,o.parent,i.first())).then((function(){var t=F(n.scrollContainer),e=s.getBoundingClientRect().top+t.y;n.scrollContainer.scrollTo(t.x,e-a)})).then((function(){r({items:t,parent:e})}))}))})).then((function(t){i.emitter.emit(B,t)}))},Lt.prototype.sentinel=function(){var t=e(this.options.item,this.container);return t.length?t[t.length-1]:null},Lt.prototype.first=function(){var t=e(this.options.item,this.container);return t.length?t[0]:null},Lt.prototype.pause=function(){this.paused=!0},Lt.prototype.resume=function(){this.paused=!1},Lt.prototype.enableLoadOnScroll=function(){this.loadOnScroll=!0},Lt.prototype.disableLoadOnScroll=function(){this.loadOnScroll=!1},Lt.prototype.distance=function(t,e){return this.distanceBottom(t,e)},Lt.prototype.distanceBottom=function(t,e){var n=t||_(this.scrollContainer),i=function(t,e,n){var i=n;if(!t)return-1*i.height;var o=e.y,r=t.getBoundingClientRect();return Math.trunc(o+r.bottom-i.top-(o+i.height))}(e||this.sentinel(),F(this.scrollContainer),n);return i-=this.negativeMargin},Lt.prototype.distanceTop=function(){return F(this.scrollContainer).y-this.negativeMargin},Lt.prototype.measure=function(){if(!(this.paused||this.hitFirst&&this.hitLast)){var t=_(this.scrollContainer);if(0!==t.height){if(!this.hitFirst){var e=this.distanceTop();e>0||this.emitter.emit(W,{distance:e})}if(!this.hitLast){var n=this.distanceBottom(t,this.sentinel());n>0||this.emitter.emit(A,{distance:n})}}}},Lt.prototype.on=function(t,e){this.emitter.on(t,e,this),t===D&&this.binded&&e.bind(this)()},Lt.prototype.off=function(t,e){this.emitter.off(t,e,this)},Lt.prototype.once=function(t,e){var n=this;return new Promise((function(i){n.emitter.once(t,(function(){Promise.resolve(e.apply(this,arguments)).then(i)}),n),t===D&&n.binded&&(e.bind(n)(),i())}))},Lt}));
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