/*!
 Scroller 1.2.1
 2011-2014 SpryMedia Ltd - datatables.net/license
*/
(function(j,m,k){var l=function(e){var f=function(a,b){!this instanceof f?alert("Scroller warning: Scroller must be initialised with the 'new' keyword."):("undefined"==typeof b&&(b={}),this.s={dt: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},topRowFloat:0,scrollDrawDiff:null},this.s=e.extend(this.s,f.oDefaults,b),this.s.heights.row=this.s.rowHeight,this.dom={force:m.createElement("div"),
scroller:null,table:null},this.s.dt.oScroller=this,this._fnConstruct())};f.prototype={fnRowToPixels:function(a,b,c){a=c?this._domain("virtualToPhysical",a*this.s.heights.row):this.s.baseScrollTop+(a-this.s.baseRowTop)*this.s.heights.row;return b||b===k?parseInt(a,10):a},fnPixelsToRow:function(a,b,c){var d=a-this.s.baseScrollTop,a=c?this._domain("physicalToVirtual",a)/this.s.heights.row:d/this.s.heights.row+this.s.baseRowTop;return b||b===k?parseInt(a,10):a},fnScrollToRow:function(a,b){var c=this,
d=!1,g=this.fnRowToPixels(a),f=a-(this.s.displayBuffer-1)/2*this.s.viewportRows;0>f&&(f=0);if((g>this.s.redrawBottom||g<this.s.redrawTop)&&this.s.dt._iDisplayStart!==f)d=!0,g=this.fnRowToPixels(a,!1,!0);"undefined"==typeof b||b?(this.s.ani=d,e(this.dom.scroller).animate({scrollTop:g},function(){setTimeout(function(){c.s.ani=!1},0)})):e(this.dom.scroller).scrollTop(g)},fnMeasure:function(a){this.s.autoHeight&&this._fnCalcRowHeight();var b=this.s.heights;b.viewport=e(this.dom.scroller).height();this.s.viewportRows=
parseInt(b.viewport/b.row,10)+1;this.s.dt._iDisplayLength=this.s.viewportRows*this.s.displayBuffer;("undefined"==typeof a||a)&&this.s.dt.oInstance.fnDraw()},_fnConstruct:function(){var a=this;if(this.s.dt.oFeatures.bPaginate){this.dom.force.style.position="absolute";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(this.s.dt.nTableWrapper).addClass("DTS");this.s.loadingIndicator&&e(this.dom.scroller.parentNode).css("position","relative").append('<div class="DTS_Loading">'+this.s.dt.oLanguage.sLoadingRecords+"</div>");this.s.heights.row&&"auto"!=this.s.heights.row&&(this.s.autoHeight=!1);this.fnMeasure(!1);e(this.dom.scroller).on("scroll.DTS",function(){a._fnScroll.call(a)});
e(this.dom.scroller).on("touchstart.DTS",function(){a._fnScroll.call(a)});this.s.dt.aoDrawCallback.push({fn:function(){a.s.dt.bInitialised&&a._fnDrawCallback.call(a)},sName:"Scroller"});e(j).on("resize.DTS",function(){a._fnInfo()});var b=!0;this.s.dt.oApi._fnCallbackReg(this.s.dt,"aoStateSaveParams",function(c,d){if(b&&a.s.dt.oLoadedState){d.iScroller=a.s.dt.oLoadedState.iScroller;b=false}else d.iScroller=a.dom.scroller.scrollTop},"Scroller_State");this.s.dt.aoDestroyCallback.push({sName:"Scroller",
fn:function(){e(j).off("resize.DTS");e(a.dom.scroller).off("touchstart.DTS scroll.DTS");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")},_fnScroll:function(){var a=this,b=this.s.heights,c=this.dom.scroller.scrollTop,d;if(!this.s.skip)if(this.s.dt.bFiltered||this.s.dt.bSorted)this.s.lastScrollTop=
0;else{this._fnInfo();clearTimeout(this.s.stateTO);this.s.stateTO=setTimeout(function(){a.s.dt.oApi._fnSaveState(a.s.dt)},250);if(c<this.s.redrawTop||c>this.s.redrawBottom){var g=Math.ceil((this.s.displayBuffer-1)/2*this.s.viewportRows);Math.abs(c-this.s.lastScrollTop)>b.viewport||this.s.ani?(d=parseInt(this._domain("physicalToVirtual",c)/b.row,10)-g,this.s.topRowFloat=this._domain("physicalToVirtual",c)/b.row):(d=this.fnPixelsToRow(c)-g,this.s.topRowFloat=this.fnPixelsToRow(c,!1));0>=d?d=0:d+this.s.dt._iDisplayLength>
this.s.dt.fnRecordsDisplay()?(d=this.s.dt.fnRecordsDisplay()-this.s.dt._iDisplayLength,0>d&&(d=0)):0!==d%2&&d++;d!=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,b=function(){if(a.s.scrollDrawReq===null)a.s.scrollDrawReq=c;a.s.dt._iDisplayStart=d;a.s.dt.oApi._fnCalculateEnd&&a.s.dt.oApi._fnCalculateEnd(a.s.dt);a.s.dt.oApi._fnDraw(a.s.dt)},this.s.dt.oFeatures.bServerSide?(clearTimeout(this.s.drawTO),this.s.drawTO=
setTimeout(b,this.s.serverWait)):b())}this.s.lastScrollTop=c}},_domain:function(a,b){var c=this.s.heights,d;if(c.virtual===c.scroll){d=(c.virtual-c.viewport)/(c.scroll-c.viewport);if("virtualToPhysical"===a)return b/d;if("physicalToVirtual"===a)return b*d}var e=(c.scroll-c.viewport)/2,f=(c.virtual-c.viewport)/2;d=f/(e*e);if("virtualToPhysical"===a){if(b<f)return Math.pow(b/d,0.5);b=2*f-b;return 0>b?c.scroll:2*e-Math.pow(b/d,0.5)}if("physicalToVirtual"===a){if(b<e)return b*b*d;b=2*e-b;return 0>b?c.virtual:
2*f-b*b*d}},_fnDrawCallback:function(){var a=this,b=this.s.heights,c=this.dom.scroller.scrollTop,d=e(this.s.dt.nTable).height(),g=this.s.dt._iDisplayStart,f=this.s.dt._iDisplayLength,h=this.s.dt.fnRecordsDisplay();this.s.skip=!0;this._fnScrollForce();c=0===g?this.s.topRowFloat*b.row:g+f>=h?b.scroll-(h-this.s.topRowFloat)*b.row:this._domain("virtualToPhysical",this.s.topRowFloat*b.row);this.dom.scroller.scrollTop=c;this.s.baseScrollTop=c;this.s.baseRowTop=this.s.topRowFloat;var i=c-(this.s.topRowFloat-
g)*b.row;0===g?i=0:g+f>=h&&(i=b.scroll-d);this.dom.table.style.top=i+"px";this.s.tableTop=i;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;this.s.skip=!1;setTimeout(function(){a._fnInfo.call(a)},0);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?!0:!1)&&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},0)},_fnScrollForce: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+"px"},_fnCalcRowHeight:function(){var a=this.s.dt.nTable,b=a.cloneNode(!1),c=e("<tbody/>").appendTo(b),d=e('<div class="'+this.s.dt.oClasses.sWrapper+' DTS"><div class="'+this.s.dt.oClasses.sScrollWrapper+'"><div class="'+this.s.dt.oClasses.sScrollBody+'"></div></div></div>');
for(e("tbody tr:lt(4)",a).clone().appendTo(c);3>e("tr",c).length;)c.append("<tr><td>&nbsp;</td></tr>");e("div."+this.s.dt.oClasses.sScrollBody,d).append(b);d.appendTo(this.s.dt.nHolding);this.s.heights.row=e("tr",c).eq(1).outerHeight();d.remove()},_fnInfo:function(){if(this.s.dt.oFeatures.bInfo){var a=this.s.dt,b=this.dom.scroller.scrollTop,c=Math.floor(this.fnPixelsToRow(b,!1,this.s.ani)+1),d=a.fnRecordsTotal(),f=a.fnRecordsDisplay(),b=Math.ceil(this.fnPixelsToRow(b+this.s.heights.viewport,!1,this.s.ani)),
b=f<b?f:b,c=a.fnFormatNumber(c),b=a.fnFormatNumber(b),d=a.fnFormatNumber(d),f=a.fnFormatNumber(f),f=0===a.fnRecordsDisplay()&&a.fnRecordsDisplay()==a.fnRecordsTotal()?a.oLanguage.sInfoEmpty+a.oLanguage.sInfoPostFix:0===a.fnRecordsDisplay()?a.oLanguage.sInfoEmpty+" "+a.oLanguage.sInfoFiltered.replace("_MAX_",d)+a.oLanguage.sInfoPostFix:a.fnRecordsDisplay()==a.fnRecordsTotal()?a.oLanguage.sInfo.replace("_START_",c).replace("_END_",b).replace("_TOTAL_",f)+a.oLanguage.sInfoPostFix:a.oLanguage.sInfo.replace("_START_",
c).replace("_END_",b).replace("_TOTAL_",f)+" "+a.oLanguage.sInfoFiltered.replace("_MAX_",a.fnFormatNumber(a.fnRecordsTotal()))+a.oLanguage.sInfoPostFix,a=a.aanFeatures.i;if("undefined"!=typeof a){d=0;for(c=a.length;d<c;d++)e(a[d]).html(f)}}}};f.defaults={trace:!1,rowHeight:"auto",serverWait:200,displayBuffer:9,boundaryScale:0.5,loadingIndicator:!1};f.oDefaults=f.defaults;f.version="1.2.1";"function"==typeof e.fn.dataTable&&"function"==typeof e.fn.dataTableExt.fnVersionCheck&&e.fn.dataTableExt.fnVersionCheck("1.9.0")?
e.fn.dataTableExt.aoFeatures.push({fnInit:function(a){var b=a.oInit;return(new f(a,b.scroller||b.oScroller||{})).dom.wrapper},cFeature:"S",sFeature:"Scroller"}):alert("Warning: Scroller requires DataTables 1.9.0 or greater - www.datatables.net/download");e.fn.dataTable.Scroller=f;e.fn.DataTable.Scroller=f;if(e.fn.dataTable.Api){var h=e.fn.dataTable.Api;h.register("scroller().rowToPixels()",function(a,b,c){var d=this.context;if(d.length&&d[0].oScroller)return d[0].oScroller.fnRowToPixels(a,b,c)});
h.register("scroller().pixelsToRow()",function(a,b,c){var d=this.context;if(d.length&&d[0].oScroller)return d[0].oScroller.fnPixelsToRow(a,b,c)});h.register("scroller().scrollToRow()",function(a,b){this.iterator("table",function(c){c.oScroller&&c.oScroller.fnScrollToRow(a,b)});return this});h.register("scroller().measure()",function(a){this.iterator("table",function(b){b.oScroller&&b.oScroller.fnMeasure(a)});return this})}return f};"function"===typeof define&&define.amd?define("datatables-scroller",
["jquery","datatables"],l):jQuery&&!jQuery.fn.dataTable.Scroller&&l(jQuery,jQuery.fn.dataTable)})(window,document);
