source: public/vendors/dataTable/Scroller-2.0.1/js/dataTables.scroller.min.js@ bd9e8e3

/*!
   Copyright 2011-2019 SpryMedia Ltd.

 This source file is free software, available under the following license:
   MIT license - http://datatables.net/license/mit

 This source file is distributed in the hope that it will be useful, but
 WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
 or FITNESS FOR A PARTICULAR PURPOSE. See the license files for details.

 For details please refer to: http://www.datatables.net
 Scroller 2.0.1
 ©2011-2019 SpryMedia Ltd - datatables.net/license
*/
(function(e){"function"===typeof define&&define.amd?define(["jquery","datatables.net"],function(h){return e(h,window,document)}):"object"===typeof exports?module.exports=function(h,k){h||(h=window);k&&k.fn.dataTable||(k=require("datatables.net")(h,k).$);return e(k,h,h.document)}:e(jQuery,window,document)})(function(e,h,k,n){var p=e.fn.dataTable,g=function(a,b){this instanceof g?(b===n&&(b={}),a=e.fn.dataTable.Api(a),this.s={dt:a.settings()[0],dtApi:a,tableTop:0,tableBottom:0,redrawTop:0,redrawBottom:0,
autoHeight:!0,viewportRows:0,stateTO:null,drawTO:null,heights:{jump:null,page:null,virtual:null,scroll:null,row:null,viewport:null,labelFactor:1},topRowFloat:0,scrollDrawDiff:null,loaderVisible:!1,forceReposition:!1,baseRowTop:0,baseScrollTop:0,mousedown:!1,lastScrollTop:0},this.s=e.extend(this.s,g.oDefaults,b),this.s.heights.row=this.s.rowHeight,this.dom={force:k.createElement("div"),label:e('<div class="dts_label">0</div>'),scroller:null,table:null,loader:null},this.s.dt.oScroller||(this.s.dt.oScroller=
this,this.construct())):alert("Scroller warning: Scroller must be initialised with the 'new' keyword.")};e.extend(g.prototype,{measure:function(a){this.s.autoHeight&&this._calcRowHeight();var b=this.s.heights;b.row&&(b.viewport=e.contains(k,this.dom.scroller)?this.dom.scroller.clientHeight:this._parseHeight(e(this.dom.scroller).css("height")),b.viewport||(b.viewport=this._parseHeight(e(this.dom.scroller).css("max-height"))),this.s.viewportRows=parseInt(b.viewport/b.row,10)+1,this.s.dt._iDisplayLength=
this.s.viewportRows*this.s.displayBuffer);var c=this.dom.label.outerHeight();b.labelFactor=(b.viewport-c)/b.scroll;(a===n||a)&&this.s.dt.oInstance.fnDraw(!1)},pageInfo:function(){var a=this.dom.scroller.scrollTop,b=this.s.dt.fnRecordsDisplay(),c=Math.ceil(this.pixelsToRow(a+this.s.heights.viewport,!1,this.s.ani));return{start:Math.floor(this.pixelsToRow(a,!1,this.s.ani)),end:b<c?b-1:c-1}},pixelsToRow:function(a,b,c){a-=this.s.baseScrollTop;c=c?(this._domain("physicalToVirtual",this.s.baseScrollTop)+
a)/this.s.heights.row:a/this.s.heights.row+this.s.baseRowTop;return b||b===n?parseInt(c,10):c},rowToPixels:function(a,b,c){a-=this.s.baseRowTop;c=c?this._domain("virtualToPhysical",this.s.baseScrollTop):this.s.baseScrollTop;c+=a*this.s.heights.row;return b||b===n?parseInt(c,10):c},scrollToRow:function(a,b){var c=this,d=!1,f=this.rowToPixels(a),m=a-(this.s.displayBuffer-1)/2*this.s.viewportRows;0>m&&(m=0);(f>this.s.redrawBottom||f<this.s.redrawTop)&&this.s.dt._iDisplayStart!==m&&(d=!0,f=this._domain("virtualToPhysical",
a*this.s.heights.row),this.s.redrawTop<f&&f<this.s.redrawBottom&&(this.s.forceReposition=!0,b=!1));b===n||b?(this.s.ani=d,e(this.dom.scroller).animate({scrollTop:f},function(){setTimeout(function(){c.s.ani=!1},250)})):e(this.dom.scroller).scrollTop(f)},construct:function(){var a=this,b=this.s.dtApi;if(this.s.dt.oFeatures.bPaginate){this.dom.force.style.position="relative";this.dom.force.style.top="0px";this.dom.force.style.left="0px";this.dom.force.style.width="1px";this.dom.scroller=e("div."+this.s.dt.oClasses.sScrollBody,
this.s.dt.nTableWrapper)[0];this.dom.scroller.appendChild(this.dom.force);this.dom.scroller.style.position="relative";this.dom.table=e(">table",this.dom.scroller)[0];this.dom.table.style.position="absolute";this.dom.table.style.top="0px";this.dom.table.style.left="0px";e(b.table().container()).addClass("dts DTS");this.s.loadingIndicator&&(this.dom.loader=e('<div class="dataTables_processing dts_loading">'+this.s.dt.oLanguage.sLoadingRecords+"</div>").css("display","none"),e(this.dom.scroller.parentNode).css("position",
"relative").append(this.dom.loader));this.dom.label.appendTo(this.dom.scroller);this.s.heights.row&&"auto"!=this.s.heights.row&&(this.s.autoHeight=!1);this.measure(!1);this.s.ingnoreScroll=!0;this.s.stateSaveThrottle=this.s.dt.oApi._fnThrottle(function(){a.s.dtApi.state.save()},500);e(this.dom.scroller).on("scroll.dt-scroller",function(b){a._scroll.call(a)});e(this.dom.scroller).on("touchstart.dt-scroller",function(){a._scroll.call(a)});e(this.dom.scroller).on("mousedown.dt-scroller",function(){a.s.mousedown=
!0}).on("mouseup.dt-scroller",function(){a.s.mouseup=!1;a.dom.label.css("display","none")});e(h).on("resize.dt-scroller",function(){a.measure(!1);a._info()});var c=!0,d=b.state.loaded();b.on("stateSaveParams.scroller",function(b,e,h){h.scroller={topRow:c&&d&&d.scroller?d.scroller.topRow:a.s.topRowFloat,baseScrollTop:a.s.baseScrollTop,baseRowTop:a.s.baseRowTop};c=!1});d&&d.scroller&&(this.s.topRowFloat=d.scroller.topRow,this.s.baseScrollTop=d.scroller.baseScrollTop,this.s.baseRowTop=d.scroller.baseRowTop);
b.on("init.scroller",function(){a.measure(!1);a.s.scrollType="jump";a._draw();b.on("draw.scroller",function(){a._draw()})});b.on("preDraw.dt.scroller",function(){a._scrollForce()});b.on("destroy.scroller",function(){e(h).off("resize.dt-scroller");e(a.dom.scroller).off(".dt-scroller");e(a.s.dt.nTable).off(".scroller");e(a.s.dt.nTableWrapper).removeClass("DTS");e("div.DTS_Loading",a.dom.scroller.parentNode).remove();a.dom.table.style.position="";a.dom.table.style.top="";a.dom.table.style.left=""})}else this.s.dt.oApi._fnLog(this.s.dt,
0,"Pagination must be enabled for Scroller")},_calcRowHeight:function(){var a=this.s.dt,b=a.nTable,c=b.cloneNode(!1),d=e("<tbody/>").appendTo(c),f=e('<div class="'+a.oClasses.sWrapper+' DTS"><div class="'+a.oClasses.sScrollWrapper+'"><div class="'+a.oClasses.sScrollBody+'"></div></div></div>');e("tbody tr:lt(4)",b).clone().appendTo(d);var m=e("tr",d).length;if(1===m)d.prepend("<tr><td>&#160;</td></tr>"),d.append("<tr><td>&#160;</td></tr>");else for(;3>m;m++)d.append("<tr><td>&#160;</td></tr>");e("div."+
a.oClasses.sScrollBody,f).append(c);a=this.s.dt.nHolding||b.parentNode;e(a).is(":visible")||(a="body");f.appendTo(a);this.s.heights.row=e("tr",d).eq(1).outerHeight();f.remove()},_draw:function(){var a=this,b=this.s.heights,c=this.dom.scroller.scrollTop,d=e(this.s.dt.nTable).height(),f=this.s.dt._iDisplayStart,m=this.s.dt._iDisplayLength,h=this.s.dt.fnRecordsDisplay();this.s.skip=!0;!this.s.dt.bSorted&&!this.s.dt.bFiltered||0!==f||this.s.dt._drawHold||(this.s.topRowFloat=0);c="jump"===this.s.scrollType?
this._domain("virtualToPhysical",this.s.topRowFloat*b.row):c;this.s.baseScrollTop=c;this.s.baseRowTop=this.s.topRowFloat;var g=c-(this.s.topRowFloat-f)*b.row;0===f?g=0:f+m>=h&&(g=b.scroll-d);this.dom.table.style.top=g+"px";this.s.tableTop=g;this.s.tableBottom=d+this.s.tableTop;d=(c-this.s.tableTop)*this.s.boundaryScale;this.s.redrawTop=c-d;this.s.redrawBottom=c+d>b.scroll-b.viewport-b.row?b.scroll-b.viewport-b.row:c+d;this.s.skip=!1;this.s.dt.oFeatures.bStateSave&&null!==this.s.dt.oLoadedState&&"undefined"!=
typeof this.s.dt.oLoadedState.iScroller?((c=!this.s.dt.sAjaxSource&&!a.s.dt.ajax||this.s.dt.oFeatures.bServerSide?!1:!0)&&2==this.s.dt.iDraw||!c&&1==this.s.dt.iDraw)&&setTimeout(function(){e(a.dom.scroller).scrollTop(a.s.dt.oLoadedState.iScroller);a.s.redrawTop=a.s.dt.oLoadedState.iScroller-b.viewport/2;setTimeout(function(){a.s.ingnoreScroll=!1},0)},0):a.s.ingnoreScroll=!1;this.s.dt.oFeatures.bInfo&&setTimeout(function(){a._info.call(a)},0);this.dom.loader&&this.s.loaderVisible&&(this.dom.loader.css("display",
"none"),this.s.loaderVisible=!1)},_domain:function(a,b){var c=this.s.heights;if(c.virtual===c.scroll||1E4>b)return b;if("virtualToPhysical"===a&&b>=c.virtual-1E4)return a=c.virtual-b,c.scroll-a;if("physicalToVirtual"===a&&b>=c.scroll-1E4)return a=c.scroll-b,c.virtual-a;c=(c.virtual-1E4-1E4)/(c.scroll-1E4-1E4);var d=1E4-1E4*c;return"virtualToPhysical"===a?(b-d)/c:c*b+d},_info:function(){if(this.s.dt.oFeatures.bInfo){var a=this.s.dt,b=a.oLanguage,c=this.dom.scroller.scrollTop,d=Math.floor(this.pixelsToRow(c,
!1,this.s.ani)+1),f=a.fnRecordsTotal(),g=a.fnRecordsDisplay();c=Math.ceil(this.pixelsToRow(c+this.s.heights.viewport,!1,this.s.ani));c=g<c?g:c;var h=a.fnFormatNumber(d),k=a.fnFormatNumber(c),l=a.fnFormatNumber(f),n=a.fnFormatNumber(g);h=0===a.fnRecordsDisplay()&&a.fnRecordsDisplay()==a.fnRecordsTotal()?b.sInfoEmpty+b.sInfoPostFix:0===a.fnRecordsDisplay()?b.sInfoEmpty+" "+b.sInfoFiltered.replace("_MAX_",l)+b.sInfoPostFix:a.fnRecordsDisplay()==a.fnRecordsTotal()?b.sInfo.replace("_START_",h).replace("_END_",
k).replace("_MAX_",l).replace("_TOTAL_",n)+b.sInfoPostFix:b.sInfo.replace("_START_",h).replace("_END_",k).replace("_MAX_",l).replace("_TOTAL_",n)+" "+b.sInfoFiltered.replace("_MAX_",a.fnFormatNumber(a.fnRecordsTotal()))+b.sInfoPostFix;(b=b.fnInfoCallback)&&(h=b.call(a.oInstance,a,d,c,f,g,h));d=a.aanFeatures.i;if("undefined"!=typeof d)for(f=0,g=d.length;f<g;f++)e(d[f]).html(h);e(a.nTable).triggerHandler("info.dt")}},_parseHeight:function(a){var b,c=/^([+-]?(?:\d+(?:\.\d+)?|\.\d+))(px|em|rem|vh)$/.exec(a);
if(null===c)return 0;a=parseFloat(c[1]);c=c[2];"px"===c?b=a:"vh"===c?b=a/100*e(h).height():"rem"===c?b=a*parseFloat(e(":root").css("font-size")):"em"===c&&(b=a*parseFloat(e("body").css("font-size")));return b?b:0},_scroll:function(){var a=this,b=this.s.heights,c=this.dom.scroller.scrollTop;if(!this.s.skip&&!this.s.ingnoreScroll&&c!==this.s.lastScrollTop)if(this.s.dt.bFiltered||this.s.dt.bSorted)this.s.lastScrollTop=0;else{this._info();clearTimeout(this.s.stateTO);this.s.stateTO=setTimeout(function(){a.s.dtApi.state.save()},
250);this.s.scrollType=Math.abs(c-this.s.lastScrollTop)>b.viewport?"jump":"cont";this.s.topRowFloat="cont"===this.s.scrollType?this.pixelsToRow(c,!1,!1):this._domain("physicalToVirtual",c)/b.row;0>this.s.topRowFloat&&(this.s.topRowFloat=0);if(this.s.forceReposition||c<this.s.redrawTop||c>this.s.redrawBottom){var d=Math.ceil((this.s.displayBuffer-1)/2*this.s.viewportRows);var f=parseInt(this.s.topRowFloat,10)-d;this.s.forceReposition=!1;0>=f?f=0:f+this.s.dt._iDisplayLength>this.s.dt.fnRecordsDisplay()?
(f=this.s.dt.fnRecordsDisplay()-this.s.dt._iDisplayLength,0>f&&(f=0)):0!==f%2&&f++;f!=this.s.dt._iDisplayStart&&(this.s.tableTop=e(this.s.dt.nTable).offset().top,this.s.tableBottom=e(this.s.dt.nTable).height()+this.s.tableTop,d=function(){null===a.s.scrollDrawReq&&(a.s.scrollDrawReq=c);a.s.dt._iDisplayStart=f;a.s.dt.oApi._fnDraw(a.s.dt)},this.s.dt.oFeatures.bServerSide?(clearTimeout(this.s.drawTO),this.s.drawTO=setTimeout(d,this.s.serverWait)):d(),this.dom.loader&&!this.s.loaderVisible&&(this.dom.loader.css("display",
"block"),this.s.loaderVisible=!0))}else this.s.topRowFloat=this.pixelsToRow(c,!1,!0);this.s.lastScrollTop=c;this.s.stateSaveThrottle();"jump"===this.s.scrollType&&this.s.mousedown&&this.dom.label.html(this.s.dt.fnFormatNumber(parseInt(this.s.topRowFloat,10)+1)).css("top",c+c*b.labelFactor).css("display","block")}},_scrollForce:function(){var a=this.s.heights;a.virtual=a.row*this.s.dt.fnRecordsDisplay();a.scroll=a.virtual;1E6<a.scroll&&(a.scroll=1E6);this.dom.force.style.height=a.scroll>this.s.heights.row?
a.scroll+"px":this.s.heights.row+"px"}});g.defaults={boundaryScale:.5,displayBuffer:9,loadingIndicator:!1,rowHeight:"auto",serverWait:200};g.oDefaults=g.defaults;g.version="2.0.1";e(k).on("preInit.dt.dtscroller",function(a,b){if("dt"===a.namespace){a=b.oInit.scroller;var c=p.defaults.scroller;if(a||c)c=e.extend({},a,c),!1!==a&&new g(b,c)}});e.fn.dataTable.Scroller=g;e.fn.DataTable.Scroller=g;var l=e.fn.dataTable.Api;l.register("scroller()",function(){return this});l.register("scroller().rowToPixels()",
function(a,b,c){var d=this.context;if(d.length&&d[0].oScroller)return d[0].oScroller.rowToPixels(a,b,c)});l.register("scroller().pixelsToRow()",function(a,b,c){var d=this.context;if(d.length&&d[0].oScroller)return d[0].oScroller.pixelsToRow(a,b,c)});l.register(["scroller().scrollToRow()","scroller.toPosition()"],function(a,b){this.iterator("table",function(c){c.oScroller&&c.oScroller.scrollToRow(a,b)});return this});l.register("row().scrollTo()",function(a){var b=this;this.iterator("row",function(c,
d){c.oScroller&&(d=b.rows({order:"applied",search:"applied"}).indexes().indexOf(d),c.oScroller.scrollToRow(d,a))});return this});l.register("scroller.measure()",function(a){this.iterator("table",function(b){b.oScroller&&b.oScroller.measure(a)});return this});l.register("scroller.page()",function(){var a=this.context;if(a.length&&a[0].oScroller)return a[0].oScroller.pageInfo()});return g});