clusterize.js/clusterize.min.js

/* Clusterize.js - v0.19.0 - 2021-12-19
 http://NeXTs.github.com/Clusterize.js/
 Copyright (c) 2015 Denis Lukov; Licensed GPLv3 */

;(function(p,m){"undefined"!=typeof module?module.exports=m():"function"==typeof define&&"object"==typeof define.amd?define(m):this[p]=m()})("Clusterize",function(){function p(b,a,c){return a.addEventListener?a.addEventListener(b,c,!1):a.attachEvent("on"+b,c)}function m(b,a,c){return a.removeEventListener?a.removeEventListener(b,c,!1):a.detachEvent("on"+b,c)}function t(b){return"[object Array]"===Object.prototype.toString.call(b)}function q(b,a){return window.getComputedStyle?window.getComputedStyle(a)[b]:
a.currentStyle[b]}var r=function(){for(var b=3,a=document.createElement("b"),c=a.all||[];a.innerHTML="\x3c!--[if gt IE "+ ++b+"]><i><![endif]--\x3e",c[0];);return 4<b?b:document.documentMode}(),C=navigator.platform.toLowerCase().indexOf("mac")+1,n=function(b){if(!(this instanceof n))return new n(b);var a=this,c={rows_in_block:50,blocks_in_cluster:4,tag:null,show_no_data_row:!0,no_data_class:"clusterize-no-data",no_data_text:"No data",keep_parity:!0,callbacks:{}};a.options={};for(var d="rows_in_block blocks_in_cluster show_no_data_row no_data_class no_data_text keep_parity tag callbacks".split(" "),
h=0,g;g=d[h];h++)a.options[g]="undefined"!=typeof b[g]&&null!=b[g]?b[g]:c[g];c=["scroll","content"];for(h=0;d=c[h];h++)if(a[d+"_elem"]=b[d+"Id"]?document.getElementById(b[d+"Id"]):b[d+"Elem"],!a[d+"_elem"])throw Error("Error! Could not find "+d+" element");a.content_elem.hasAttribute("tabindex")||a.content_elem.setAttribute("tabindex",0);var e=t(b.rows)?b.rows:a.fetchMarkup(),k={};b=a.scroll_elem.scrollTop;a.insertToDOM(e,k);a.scroll_elem.scrollTop=b;var l=!1,w=0,u=!1,x=function(){C&&(u||(a.content_elem.style.pointerEvents=
"none"),u=!0,clearTimeout(w),w=setTimeout(function(){a.content_elem.style.pointerEvents="auto";u=!1},50));l!=(l=a.getClusterNum(e))&&a.insertToDOM(e,k);a.options.callbacks.scrollingProgress&&a.options.callbacks.scrollingProgress(a.getScrollProgress())},y=0,z=function(){clearTimeout(y);y=setTimeout(a.refresh,100)};p("scroll",a.scroll_elem,x);p("resize",window,z);a.destroy=function(f){m("scroll",a.scroll_elem,x);m("resize",window,z);a.html((f?a.generateEmptyRow():e).join(""))};a.refresh=function(f){(a.getRowsHeight(e)||
f)&&a.update(e)};a.update=function(f){e=t(f)?f:[];f=a.scroll_elem.scrollTop;e.length*a.options.item_height<f&&(l=a.scroll_elem.scrollTop=0);a.insertToDOM(e,k);a.scroll_elem.scrollTop=f};a.clear=function(){a.update([])};a.getRowsAmount=function(){return e.length};a.getScrollProgress=function(){return this.options.scroll_top/(e.length*this.options.item_height)*100||0};var B=function(f,A){var v=t(A)?A:[];v.length&&(e="append"==f?e.concat(v):v.concat(e),a.insertToDOM(e,k))};a.append=function(f){B("append",
f)};a.prepend=function(f){B("prepend",f)}};n.prototype={constructor:n,fetchMarkup:function(){for(var b=[],a=this.getChildNodes(this.content_elem);a.length;)b.push(a.shift().outerHTML);return b},exploreEnvironment:function(b,a){var c=this.options;c.content_tag=this.content_elem.tagName.toLowerCase();b.length&&(r&&9>=r&&!c.tag&&(c.tag=b[0].match(/<([^>\s/]*)/)[1].toLowerCase()),1>=this.content_elem.children.length&&(a.data=this.html(b[0]+b[0]+b[0])),c.tag||(c.tag=this.content_elem.children[0].tagName.toLowerCase()),
this.getRowsHeight(b))},getRowsHeight:function(b){var a=this.options,c=a.item_height;a.cluster_height=0;if(b.length&&(b=this.content_elem.children,b.length)){var d=b[Math.floor(b.length/2)];a.item_height=d.offsetHeight;"tr"==a.tag&&"collapse"!=q("borderCollapse",this.content_elem)&&(a.item_height+=parseInt(q("borderSpacing",this.content_elem),10)||0);"tr"!=a.tag&&(b=parseInt(q("marginTop",d),10)||0,d=parseInt(q("marginBottom",d),10)||0,a.item_height+=Math.max(b,d));a.block_height=a.item_height*a.rows_in_block;
a.rows_in_cluster=a.blocks_in_cluster*a.rows_in_block;a.cluster_height=a.blocks_in_cluster*a.block_height;return c!=a.item_height}},getClusterNum:function(b){var a=this.options;a.scroll_top=this.scroll_elem.scrollTop;var c=a.cluster_height-a.block_height;return Math.min(Math.floor(a.scroll_top/c),Math.floor(b.length*a.item_height/c))},generateEmptyRow:function(){var b=this.options;if(!b.tag||!b.show_no_data_row)return[];var a=document.createElement(b.tag),c=document.createTextNode(b.no_data_text);
a.className=b.no_data_class;if("tr"==b.tag){var d=document.createElement("td");d.colSpan=100;d.appendChild(c)}a.appendChild(d||c);return[a.outerHTML]},generate:function(b){var a=this.options,c=b.length;if(c<a.rows_in_block)return{top_offset:0,bottom_offset:0,rows_above:0,rows:c?b:this.generateEmptyRow()};var d=Math.max((a.rows_in_cluster-a.rows_in_block)*this.getClusterNum(b),0),h=d+a.rows_in_cluster,g=Math.max(d*a.item_height,0);a=Math.max((c-h)*a.item_height,0);c=[];var e=d;for(1>g&&e++;d<h;d++)b[d]&&
c.push(b[d]);return{top_offset:g,bottom_offset:a,rows_above:e,rows:c}},renderExtraTag:function(b,a){var c=document.createElement(this.options.tag);c.className=["clusterize-extra-row","clusterize-"+b].join(" ");a&&(c.style.height=a+"px");return c.outerHTML},insertToDOM:function(b,a){this.options.cluster_height||this.exploreEnvironment(b,a);var c=this.generate(b),d=c.rows.join(""),h=this.checkChanges("data",d,a),g=this.checkChanges("top",c.top_offset,a),e=this.checkChanges("bottom",c.bottom_offset,
a),k=this.options.callbacks,l=[];h||g?(c.top_offset&&(this.options.keep_parity&&l.push(this.renderExtraTag("keep-parity")),l.push(this.renderExtraTag("top-space",c.top_offset))),l.push(d),c.bottom_offset&&l.push(this.renderExtraTag("bottom-space",c.bottom_offset)),k.clusterWillChange&&k.clusterWillChange(),this.html(l.join("")),"ol"==this.options.content_tag&&this.content_elem.setAttribute("start",c.rows_above),this.content_elem.style["counter-increment"]="clusterize-counter "+(c.rows_above-1),k.clusterChanged&&
k.clusterChanged()):e&&(this.content_elem.lastChild.style.height=c.bottom_offset+"px")},html:function(b){var a=this.content_elem;if(r&&9>=r&&"tr"==this.options.tag){var c=document.createElement("div");for(c.innerHTML="<table><tbody>"+b+"</tbody></table>";b=a.lastChild;)a.removeChild(b);for(c=this.getChildNodes(c.firstChild.firstChild);c.length;)a.appendChild(c.shift())}else a.innerHTML=b},getChildNodes:function(b){b=b.children;for(var a=[],c=0,d=b.length;c<d;c++)a.push(b[c]);return a},checkChanges:function(b,
a,c){var d=a!=c[b];c[b]=a;return d}};return n});