From 2b65b74baab4343fc94070478262cbcb6c5a64db Mon Sep 17 00:00:00 2001
From: mtyszler <tyszler.jobs@gmail.com>
Date: Fri, 3 Jan 2020 13:30:00 +0100
Subject: [PATCH 01/12] unminify code to improve readabilitty

---
 .../Buttons/js/dataTables.buttons.min.js      | 806 +++++++++++++++++-
 1 file changed, 770 insertions(+), 36 deletions(-)

diff --git a/inst/htmlwidgets/lib/datatables-extensions/Buttons/js/dataTables.buttons.min.js b/inst/htmlwidgets/lib/datatables-extensions/Buttons/js/dataTables.buttons.min.js
index 22ac9054..f873dfbe 100644
--- a/inst/htmlwidgets/lib/datatables-extensions/Buttons/js/dataTables.buttons.min.js
+++ b/inst/htmlwidgets/lib/datatables-extensions/Buttons/js/dataTables.buttons.min.js
@@ -2,39 +2,773 @@
  Buttons for DataTables 1.5.2
  ©2016-2018 SpryMedia Ltd - datatables.net/license
 */
-(function(d){"function"===typeof define&&define.amd?define(["jquery","datatables.net"],function(n){return d(n,window,document)}):"object"===typeof exports?module.exports=function(n,o){n||(n=window);if(!o||!o.fn.dataTable)o=require("datatables.net")(n,o).$;return d(o,n,n.document)}:d(jQuery,window,document)})(function(d,n,o,m){var i=d.fn.dataTable,x=0,y=0,k=i.ext.buttons,l=function(a,b){"undefined"===typeof b&&(b={});!0===b&&(b={});d.isArray(b)&&(b={buttons:b});this.c=d.extend(!0,{},l.defaults,b);
-b.buttons&&(this.c.buttons=b.buttons);this.s={dt:new i.Api(a),buttons:[],listenKeys:"",namespace:"dtb"+x++};this.dom={container:d("<"+this.c.dom.container.tag+"/>").addClass(this.c.dom.container.className)};this._constructor()};d.extend(l.prototype,{action:function(a,b){var c=this._nodeToButton(a);if(b===m)return c.conf.action;c.conf.action=b;return this},active:function(a,b){var c=this._nodeToButton(a),e=this.c.dom.button.active,c=d(c.node);if(b===m)return c.hasClass(e);c.toggleClass(e,b===m?!0:
-b);return this},add:function(a,b){var c=this.s.buttons;if("string"===typeof b){for(var e=b.split("-"),c=this.s,d=0,h=e.length-1;d<h;d++)c=c.buttons[1*e[d]];c=c.buttons;b=1*e[e.length-1]}this._expandButton(c,a,!1,b);this._draw();return this},container:function(){return this.dom.container},disable:function(a){a=this._nodeToButton(a);d(a.node).addClass(this.c.dom.button.disabled);return this},destroy:function(){d("body").off("keyup."+this.s.namespace);var a=this.s.buttons.slice(),b,c;b=0;for(c=a.length;b<
-c;b++)this.remove(a[b].node);this.dom.container.remove();a=this.s.dt.settings()[0];b=0;for(c=a.length;b<c;b++)if(a.inst===this){a.splice(b,1);break}return this},enable:function(a,b){if(!1===b)return this.disable(a);var c=this._nodeToButton(a);d(c.node).removeClass(this.c.dom.button.disabled);return this},name:function(){return this.c.name},node:function(a){a=this._nodeToButton(a);return d(a.node)},processing:function(a,b){var c=this._nodeToButton(a);if(b===m)return d(c.node).hasClass("processing");
-d(c.node).toggleClass("processing",b);return this},remove:function(a){var b=this._nodeToButton(a),c=this._nodeToHost(a),e=this.s.dt;if(b.buttons.length)for(var g=b.buttons.length-1;0<=g;g--)this.remove(b.buttons[g].node);b.conf.destroy&&b.conf.destroy.call(e.button(a),e,d(a),b.conf);this._removeKey(b.conf);d(b.node).remove();a=d.inArray(b,c);c.splice(a,1);return this},text:function(a,b){var c=this._nodeToButton(a),e=this.c.dom.collection.buttonLiner,e=c.inCollection&&e&&e.tag?e.tag:this.c.dom.buttonLiner.tag,
-g=this.s.dt,h=d(c.node),f=function(a){return"function"===typeof a?a(g,h,c.conf):a};if(b===m)return f(c.conf.text);c.conf.text=b;e?h.children(e).html(f(b)):h.html(f(b));return this},_constructor:function(){var a=this,b=this.s.dt,c=b.settings()[0],e=this.c.buttons;c._buttons||(c._buttons=[]);c._buttons.push({inst:this,name:this.c.name});for(var g=0,h=e.length;g<h;g++)this.add(e[g]);b.on("destroy",function(b,e){e===c&&a.destroy()});d("body").on("keyup."+this.s.namespace,function(b){if(!o.activeElement||
-o.activeElement===o.body){var c=String.fromCharCode(b.keyCode).toLowerCase();a.s.listenKeys.toLowerCase().indexOf(c)!==-1&&a._keypress(c,b)}})},_addKey:function(a){a.key&&(this.s.listenKeys+=d.isPlainObject(a.key)?a.key.key:a.key)},_draw:function(a,b){a||(a=this.dom.container,b=this.s.buttons);a.children().detach();for(var c=0,e=b.length;c<e;c++)a.append(b[c].inserter),a.append(" "),b[c].buttons&&b[c].buttons.length&&this._draw(b[c].collection,b[c].buttons)},_expandButton:function(a,b,c,e){for(var g=
-this.s.dt,h=0,b=!d.isArray(b)?[b]:b,f=0,q=b.length;f<q;f++){var j=this._resolveExtends(b[f]);if(j)if(d.isArray(j))this._expandButton(a,j,c,e);else{var p=this._buildButton(j,c);if(p){e!==m?(a.splice(e,0,p),e++):a.push(p);if(p.conf.buttons){var u=this.c.dom.collection;p.collection=d("<"+u.tag+"/>").addClass(u.className).attr("role","menu");p.conf._collection=p.collection;this._expandButton(p.buttons,p.conf.buttons,!0,e)}j.init&&j.init.call(g.button(p.node),g,d(p.node),j);h++}}}},_buildButton:function(a,
-b){var c=this.c.dom.button,e=this.c.dom.buttonLiner,g=this.c.dom.collection,h=this.s.dt,f=function(b){return"function"===typeof b?b(h,j,a):b};b&&g.button&&(c=g.button);b&&g.buttonLiner&&(e=g.buttonLiner);if(a.available&&!a.available(h,a))return!1;var q=function(a,b,c,e){e.action.call(b.button(c),a,b,c,e);d(b.table().node()).triggerHandler("buttons-action.dt",[b.button(c),b,c,e])},g=a.tag||c.tag,j=d("<"+g+"/>").addClass(c.className).attr("tabindex",this.s.dt.settings()[0].iTabIndex).attr("aria-controls",
-this.s.dt.table().node().id).on("click.dtb",function(b){b.preventDefault();!j.hasClass(c.disabled)&&a.action&&q(b,h,j,a);j.blur()}).on("keyup.dtb",function(b){b.keyCode===13&&!j.hasClass(c.disabled)&&a.action&&q(b,h,j,a)});"a"===g.toLowerCase()&&j.attr("href","#");"button"===g.toLowerCase()&&j.attr("type","button");e.tag?(g=d("<"+e.tag+"/>").html(f(a.text)).addClass(e.className),"a"===e.tag.toLowerCase()&&g.attr("href","#"),j.append(g)):j.html(f(a.text));!1===a.enabled&&j.addClass(c.disabled);a.className&&
-j.addClass(a.className);a.titleAttr&&j.attr("title",f(a.titleAttr));a.attr&&j.attr(a.attr);a.namespace||(a.namespace=".dt-button-"+y++);e=(e=this.c.dom.buttonContainer)&&e.tag?d("<"+e.tag+"/>").addClass(e.className).append(j):j;this._addKey(a);return{conf:a,node:j.get(0),inserter:e,buttons:[],inCollection:b,collection:null}},_nodeToButton:function(a,b){b||(b=this.s.buttons);for(var c=0,e=b.length;c<e;c++){if(b[c].node===a)return b[c];if(b[c].buttons.length){var d=this._nodeToButton(a,b[c].buttons);
-if(d)return d}}},_nodeToHost:function(a,b){b||(b=this.s.buttons);for(var c=0,e=b.length;c<e;c++){if(b[c].node===a)return b;if(b[c].buttons.length){var d=this._nodeToHost(a,b[c].buttons);if(d)return d}}},_keypress:function(a,b){if(!b._buttonsHandled){var c=function(e){for(var g=0,h=e.length;g<h;g++){var f=e[g].conf,q=e[g].node;if(f.key)if(f.key===a)b._buttonsHandled=!0,d(q).click();else if(d.isPlainObject(f.key)&&f.key.key===a&&(!f.key.shiftKey||b.shiftKey))if(!f.key.altKey||b.altKey)if(!f.key.ctrlKey||
-b.ctrlKey)if(!f.key.metaKey||b.metaKey)b._buttonsHandled=!0,d(q).click();e[g].buttons.length&&c(e[g].buttons)}};c(this.s.buttons)}},_removeKey:function(a){if(a.key){var b=d.isPlainObject(a.key)?a.key.key:a.key,a=this.s.listenKeys.split(""),b=d.inArray(b,a);a.splice(b,1);this.s.listenKeys=a.join("")}},_resolveExtends:function(a){for(var b=this.s.dt,c,e,g=function(c){for(var e=0;!d.isPlainObject(c)&&!d.isArray(c);){if(c===m)return;if("function"===typeof c){if(c=c(b,a),!c)return!1}else if("string"===
-typeof c){if(!k[c])throw"Unknown button type: "+c;c=k[c]}e++;if(30<e)throw"Buttons: Too many iterations";}return d.isArray(c)?c:d.extend({},c)},a=g(a);a&&a.extend;){if(!k[a.extend])throw"Cannot extend unknown button type: "+a.extend;var h=g(k[a.extend]);if(d.isArray(h))return h;if(!h)return!1;c=h.className;a=d.extend({},h,a);c&&a.className!==c&&(a.className=c+" "+a.className);var f=a.postfixButtons;if(f){a.buttons||(a.buttons=[]);c=0;for(e=f.length;c<e;c++)a.buttons.push(f[c]);a.postfixButtons=null}if(f=
-a.prefixButtons){a.buttons||(a.buttons=[]);c=0;for(e=f.length;c<e;c++)a.buttons.splice(c,0,f[c]);a.prefixButtons=null}a.extend=h.extend}return a}});l.background=function(a,b,c){c===m&&(c=400);a?d("<div/>").addClass(b).css("display","none").appendTo("body").fadeIn(c):d("body > div."+b).fadeOut(c,function(){d(this).removeClass(b).remove()})};l.instanceSelector=function(a,b){if(!a)return d.map(b,function(a){return a.inst});var c=[],e=d.map(b,function(a){return a.name}),g=function(a){if(d.isArray(a))for(var f=
-0,q=a.length;f<q;f++)g(a[f]);else"string"===typeof a?-1!==a.indexOf(",")?g(a.split(",")):(a=d.inArray(d.trim(a),e),-1!==a&&c.push(b[a].inst)):"number"===typeof a&&c.push(b[a].inst)};g(a);return c};l.buttonSelector=function(a,b){for(var c=[],e=function(a,b,c){for(var d,g,f=0,h=b.length;f<h;f++)if(d=b[f])g=c!==m?c+f:f+"",a.push({node:d.node,name:d.conf.name,idx:g}),d.buttons&&e(a,d.buttons,g+"-")},g=function(a,b){var f,h,i=[];e(i,b.s.buttons);f=d.map(i,function(a){return a.node});if(d.isArray(a)||a instanceof
-d){f=0;for(h=a.length;f<h;f++)g(a[f],b)}else if(null===a||a===m||"*"===a){f=0;for(h=i.length;f<h;f++)c.push({inst:b,node:i[f].node})}else if("number"===typeof a)c.push({inst:b,node:b.s.buttons[a].node});else if("string"===typeof a)if(-1!==a.indexOf(",")){i=a.split(",");f=0;for(h=i.length;f<h;f++)g(d.trim(i[f]),b)}else if(a.match(/^\d+(\-\d+)*$/))f=d.map(i,function(a){return a.idx}),c.push({inst:b,node:i[d.inArray(a,f)].node});else if(-1!==a.indexOf(":name")){var k=a.replace(":name","");f=0;for(h=
-i.length;f<h;f++)i[f].name===k&&c.push({inst:b,node:i[f].node})}else d(f).filter(a).each(function(){c.push({inst:b,node:this})});else"object"===typeof a&&a.nodeName&&(i=d.inArray(a,f),-1!==i&&c.push({inst:b,node:f[i]}))},h=0,f=a.length;h<f;h++)g(b,a[h]);return c};l.defaults={buttons:["copy","excel","csv","pdf","print"],name:"main",tabIndex:0,dom:{container:{tag:"div",className:"dt-buttons"},collection:{tag:"div",className:"dt-button-collection"},button:{tag:"button",className:"dt-button",active:"active",
-disabled:"disabled"},buttonLiner:{tag:"span",className:""}}};l.version="1.5.2";d.extend(k,{collection:{text:function(a){return a.i18n("buttons.collection","Collection")},className:"buttons-collection",action:function(a,b,c,e){var g=d(c).parents("div.dt-button-collection"),a=c.position(),h=d(b.table().container()),f=!1,i=c;g.length&&(f=d(".dt-button-collection").position(),i=g,d("body").trigger("click.dtb-collection"));i.parents("body")[0]!==o.body&&(i=o.body.lastChild);e._collection.addClass(e.collectionLayout).css("display",
-"none").insertAfter(i).fadeIn(e.fade);g=e._collection.css("position");f&&"absolute"===g?e._collection.css({top:f.top,left:f.left}):"absolute"===g?(e._collection.css({top:a.top+c.outerHeight(),left:a.left}),f=h.offset().top+h.height(),f=a.top+c.outerHeight()+e._collection.outerHeight()-f,g=a.top-e._collection.outerHeight(),g=h.offset().top-g,(f>g||e.dropup)&&e._collection.css("top",a.top-e._collection.outerHeight()-5),f=a.left+e._collection.outerWidth(),h=h.offset().left+h.width(),f>h&&e._collection.css("left",
-a.left-(f-h)),c=c.offset().left+e._collection.outerWidth(),c>d(n).width()&&e._collection.css("left",a.left-(c-d(n).width()))):(c=e._collection.height()/2,c>d(n).height()/2&&(c=d(n).height()/2),e._collection.css("marginTop",-1*c));e.background&&l.background(!0,e.backgroundClassName,e.fade);var j=function(){e._collection.fadeOut(e.fade,function(){e._collection.detach()});d("div.dt-button-background").off("click.dtb-collection");l.background(false,e.backgroundClassName,e.fade);d("body").off(".dtb-collection");
-b.off("buttons-action.b-internal")};setTimeout(function(){d("div.dt-button-background").on("click.dtb-collection",function(){});d("body").on("click.dtb-collection",function(a){var b=d.fn.addBack?"addBack":"andSelf";d(a.target).parents()[b]().filter(e._collection).length||j()}).on("keyup.dtb-collection",function(a){a.keyCode===27&&j()});if(e.autoClose)b.on("buttons-action.b-internal",function(){j()})},10)},background:!0,collectionLayout:"",backgroundClassName:"dt-button-background",autoClose:!1,fade:400,
-attr:{"aria-haspopup":!0}},copy:function(a,b){if(k.copyHtml5)return"copyHtml5";if(k.copyFlash&&k.copyFlash.available(a,b))return"copyFlash"},csv:function(a,b){if(k.csvHtml5&&k.csvHtml5.available(a,b))return"csvHtml5";if(k.csvFlash&&k.csvFlash.available(a,b))return"csvFlash"},excel:function(a,b){if(k.excelHtml5&&k.excelHtml5.available(a,b))return"excelHtml5";if(k.excelFlash&&k.excelFlash.available(a,b))return"excelFlash"},pdf:function(a,b){if(k.pdfHtml5&&k.pdfHtml5.available(a,b))return"pdfHtml5";
-if(k.pdfFlash&&k.pdfFlash.available(a,b))return"pdfFlash"},pageLength:function(a){var a=a.settings()[0].aLengthMenu,b=d.isArray(a[0])?a[0]:a,c=d.isArray(a[0])?a[1]:a,e=function(a){return a.i18n("buttons.pageLength",{"-1":"Show all rows",_:"Show %d rows"},a.page.len())};return{extend:"collection",text:e,className:"buttons-page-length",autoClose:!0,buttons:d.map(b,function(a,b){return{text:c[b],className:"button-page-length",action:function(b,c){c.page.len(a).draw()},init:function(b,c,e){var d=this,
-c=function(){d.active(b.page.len()===a)};b.on("length.dt"+e.namespace,c);c()},destroy:function(a,b,c){a.off("length.dt"+c.namespace)}}}),init:function(a,b,c){var d=this;a.on("length.dt"+c.namespace,function(){d.text(e(a))})},destroy:function(a,b,c){a.off("length.dt"+c.namespace)}}}});i.Api.register("buttons()",function(a,b){b===m&&(b=a,a=m);this.selector.buttonGroup=a;var c=this.iterator(!0,"table",function(c){if(c._buttons)return l.buttonSelector(l.instanceSelector(a,c._buttons),b)},!0);c._groupSelector=
-a;return c});i.Api.register("button()",function(a,b){var c=this.buttons(a,b);1<c.length&&c.splice(1,c.length);return c});i.Api.registerPlural("buttons().active()","button().active()",function(a){return a===m?this.map(function(a){return a.inst.active(a.node)}):this.each(function(b){b.inst.active(b.node,a)})});i.Api.registerPlural("buttons().action()","button().action()",function(a){return a===m?this.map(function(a){return a.inst.action(a.node)}):this.each(function(b){b.inst.action(b.node,a)})});i.Api.register(["buttons().enable()",
-"button().enable()"],function(a){return this.each(function(b){b.inst.enable(b.node,a)})});i.Api.register(["buttons().disable()","button().disable()"],function(){return this.each(function(a){a.inst.disable(a.node)})});i.Api.registerPlural("buttons().nodes()","button().node()",function(){var a=d();d(this.each(function(b){a=a.add(b.inst.node(b.node))}));return a});i.Api.registerPlural("buttons().processing()","button().processing()",function(a){return a===m?this.map(function(a){return a.inst.processing(a.node)}):
-this.each(function(b){b.inst.processing(b.node,a)})});i.Api.registerPlural("buttons().text()","button().text()",function(a){return a===m?this.map(function(a){return a.inst.text(a.node)}):this.each(function(b){b.inst.text(b.node,a)})});i.Api.registerPlural("buttons().trigger()","button().trigger()",function(){return this.each(function(a){a.inst.node(a.node).trigger("click")})});i.Api.registerPlural("buttons().containers()","buttons().container()",function(){var a=d(),b=this._groupSelector;this.iterator(!0,
-"table",function(c){if(c._buttons)for(var c=l.instanceSelector(b,c._buttons),d=0,g=c.length;d<g;d++)a=a.add(c[d].container())});return a});i.Api.register("button().add()",function(a,b){var c=this.context;c.length&&(c=l.instanceSelector(this._groupSelector,c[0]._buttons),c.length&&c[0].add(b,a));return this.button(this._groupSelector,a)});i.Api.register("buttons().destroy()",function(){this.pluck("inst").unique().each(function(a){a.destroy()});return this});i.Api.registerPlural("buttons().remove()",
-"buttons().remove()",function(){this.each(function(a){a.inst.remove(a.node)});return this});var r;i.Api.register("buttons.info()",function(a,b,c){var e=this;if(!1===a)return d("#datatables_buttons_info").fadeOut(function(){d(this).remove()}),clearTimeout(r),r=null,this;r&&clearTimeout(r);d("#datatables_buttons_info").length&&d("#datatables_buttons_info").remove();d('<div id="datatables_buttons_info" class="dt-button-info"/>').html(a?"<h2>"+a+"</h2>":"").append(d("<div/>")["string"===typeof b?"html":
-"append"](b)).css("display","none").appendTo("body").fadeIn();c!==m&&0!==c&&(r=setTimeout(function(){e.buttons.info(!1)},c));return this});i.Api.register("buttons.exportData()",function(a){if(this.context.length){var b=new i.Api(this.context[0]),c=d.extend(!0,{},{rows:null,columns:"",modifier:{search:"applied",order:"applied"},orthogonal:"display",stripHtml:!0,stripNewlines:!0,decodeEntities:!0,trim:!0,format:{header:function(a){return e(a)},footer:function(a){return e(a)},body:function(a){return e(a)}},
-customizeData:null},a),e=function(a){if("string"!==typeof a)return a;a=a.replace(/<script\b[^<]*(?:(?!<\/script>)<[^<]*)*<\/script>/gi,"");a=a.replace(/<!\-\-.*?\-\->/g,"");c.stripHtml&&(a=a.replace(/<[^>]*>/g,""));c.trim&&(a=a.replace(/^\s+|\s+$/g,""));c.stripNewlines&&(a=a.replace(/\n/g," "));c.decodeEntities&&(v.innerHTML=a,a=v.value);return a},a=b.columns(c.columns).indexes().map(function(a){var d=b.column(a).header();return c.format.header(d.innerHTML,a,d)}).toArray(),g=b.table().footer()?b.columns(c.columns).indexes().map(function(a){var d=
-b.column(a).footer();return c.format.footer(d?d.innerHTML:"",a,d)}).toArray():null,h=d.extend({},c.modifier);b.select&&"function"===typeof b.select.info&&h.selected===m&&b.rows(c.rows,d.extend({selected:!0},h)).any()&&d.extend(h,{selected:!0});for(var h=b.rows(c.rows,h).indexes().toArray(),f=b.cells(h,c.columns),h=f.render(c.orthogonal).toArray(),f=f.nodes().toArray(),k=a.length,j=[],l=0,n=0,o=0<k?h.length/k:0;n<o;n++){for(var r=[k],s=0;s<k;s++)r[s]=c.format.body(h[l],n,s,f[l]),l++;j[n]=r}a={header:a,
-footer:g,body:j};c.customizeData&&c.customizeData(a);return a}});i.Api.register("buttons.exportInfo()",function(a){a||(a={});var b;var c=a;b="*"===c.filename&&"*"!==c.title&&c.title!==m&&null!==c.title&&""!==c.title?c.title:c.filename;"function"===typeof b&&(b=b());b===m||null===b?b=null:(-1!==b.indexOf("*")&&(b=d.trim(b.replace("*",d("head > title").text()))),b=b.replace(/[^a-zA-Z0-9_\u00A1-\uFFFF\.,\-_ !\(\)]/g,""),(c=t(c.extension))||(c=""),b+=c);c=t(a.title);c=null===c?null:-1!==c.indexOf("*")?
-c.replace("*",d("head > title").text()||"Exported data"):c;return{filename:b,title:c,messageTop:w(this,a.message||a.messageTop,"top"),messageBottom:w(this,a.messageBottom,"bottom")}});var t=function(a){return null===a||a===m?null:"function"===typeof a?a():a},w=function(a,b,c){b=t(b);if(null===b)return null;a=d("caption",a.table().container()).eq(0);return"*"===b?a.css("caption-side")!==c?null:a.length?a.text():"":b},v=d("<textarea/>")[0];d.fn.dataTable.Buttons=l;d.fn.DataTable.Buttons=l;d(o).on("init.dt plugin-init.dt",
-function(a,b){if("dt"===a.namespace){var c=b.oInit.buttons||i.defaults.buttons;c&&!b._buttons&&(new l(b,c)).container()}});i.ext.feature.push({fnInit:function(a){var a=new i.Api(a),b=a.init().buttons||i.defaults.buttons;return(new l(a,b)).container()},cFeature:"B"});return l});
+(function(d) {
+    "function" === typeof define && define.amd ? define(["jquery", "datatables.net"], function(n) {
+        return d(n, window, document)
+    }) : "object" === typeof exports ? module.exports = function(n, o) {
+        n || (n = window);
+        if (!o || !o.fn.dataTable) o = require("datatables.net")(n, o).$;
+        return d(o, n, n.document)
+    } : d(jQuery, window, document)
+})(function(d, n, o, m) {
+    var i = d.fn.dataTable,
+        x = 0,
+        y = 0,
+        k = i.ext.buttons,
+        l = function(a, b) {
+            "undefined" === typeof b && (b = {});
+            !0 === b && (b = {});
+            d.isArray(b) && (b = {
+                buttons: b
+            });
+            this.c = d.extend(!0, {}, l.defaults, b);
+            b.buttons && (this.c.buttons = b.buttons);
+            this.s = {
+                dt: new i.Api(a),
+                buttons: [],
+                listenKeys: "",
+                namespace: "dtb" + x++
+            };
+            this.dom = {
+                container: d("<" + this.c.dom.container.tag + "/>").addClass(this.c.dom.container.className)
+            };
+            this._constructor()
+        };
+    d.extend(l.prototype, {
+        action: function(a, b) {
+            var c = this._nodeToButton(a);
+            if (b === m) return c.conf.action;
+            c.conf.action = b;
+            return this
+        },
+        active: function(a, b) {
+            var c = this._nodeToButton(a),
+                e = this.c.dom.button.active,
+                c = d(c.node);
+            if (b === m) return c.hasClass(e);
+            c.toggleClass(e, b === m ? !0 :
+                b);
+            return this
+        },
+        add: function(a, b) {
+            var c = this.s.buttons;
+            if ("string" === typeof b) {
+                for (var e = b.split("-"), c = this.s, d = 0, h = e.length - 1; d < h; d++) c = c.buttons[1 * e[d]];
+                c = c.buttons;
+                b = 1 * e[e.length - 1]
+            }
+            this._expandButton(c, a, !1, b);
+            this._draw();
+            return this
+        },
+        container: function() {
+            return this.dom.container
+        },
+        disable: function(a) {
+            a = this._nodeToButton(a);
+            d(a.node).addClass(this.c.dom.button.disabled);
+            return this
+        },
+        destroy: function() {
+            d("body").off("keyup." + this.s.namespace);
+            var a = this.s.buttons.slice(),
+                b, c;
+            b = 0;
+            for (c = a.length; b <
+                c; b++) this.remove(a[b].node);
+            this.dom.container.remove();
+            a = this.s.dt.settings()[0];
+            b = 0;
+            for (c = a.length; b < c; b++)
+                if (a.inst === this) {
+                    a.splice(b, 1);
+                    break
+                }
+            return this
+        },
+        enable: function(a, b) {
+            if (!1 === b) return this.disable(a);
+            var c = this._nodeToButton(a);
+            d(c.node).removeClass(this.c.dom.button.disabled);
+            return this
+        },
+        name: function() {
+            return this.c.name
+        },
+        node: function(a) {
+            a = this._nodeToButton(a);
+            return d(a.node)
+        },
+        processing: function(a, b) {
+            var c = this._nodeToButton(a);
+            if (b === m) return d(c.node).hasClass("processing");
+            d(c.node).toggleClass("processing", b);
+            return this
+        },
+        remove: function(a) {
+            var b = this._nodeToButton(a),
+                c = this._nodeToHost(a),
+                e = this.s.dt;
+            if (b.buttons.length)
+                for (var g = b.buttons.length - 1; 0 <= g; g--) this.remove(b.buttons[g].node);
+            b.conf.destroy && b.conf.destroy.call(e.button(a), e, d(a), b.conf);
+            this._removeKey(b.conf);
+            d(b.node).remove();
+            a = d.inArray(b, c);
+            c.splice(a, 1);
+            return this
+        },
+        text: function(a, b) {
+            var c = this._nodeToButton(a),
+                e = this.c.dom.collection.buttonLiner,
+                e = c.inCollection && e && e.tag ? e.tag : this.c.dom.buttonLiner.tag,
+                g = this.s.dt,
+                h = d(c.node),
+                f = function(a) {
+                    return "function" === typeof a ? a(g, h, c.conf) : a
+                };
+            if (b === m) return f(c.conf.text);
+            c.conf.text = b;
+            e ? h.children(e).html(f(b)) : h.html(f(b));
+            return this
+        },
+        _constructor: function() {
+            var a = this,
+                b = this.s.dt,
+                c = b.settings()[0],
+                e = this.c.buttons;
+            c._buttons || (c._buttons = []);
+            c._buttons.push({
+                inst: this,
+                name: this.c.name
+            });
+            for (var g = 0, h = e.length; g < h; g++) this.add(e[g]);
+            b.on("destroy", function(b, e) {
+                e === c && a.destroy()
+            });
+            d("body").on("keyup." + this.s.namespace, function(b) {
+                if (!o.activeElement ||
+                    o.activeElement === o.body) {
+                    var c = String.fromCharCode(b.keyCode).toLowerCase();
+                    a.s.listenKeys.toLowerCase().indexOf(c) !== -1 && a._keypress(c, b)
+                }
+            })
+        },
+        _addKey: function(a) {
+            a.key && (this.s.listenKeys += d.isPlainObject(a.key) ? a.key.key : a.key)
+        },
+        _draw: function(a, b) {
+            a || (a = this.dom.container, b = this.s.buttons);
+            a.children().detach();
+            for (var c = 0, e = b.length; c < e; c++) a.append(b[c].inserter), a.append(" "), b[c].buttons && b[c].buttons.length && this._draw(b[c].collection, b[c].buttons)
+        },
+        _expandButton: function(a, b, c, e) {
+            for (var g =
+                    this.s.dt, h = 0, b = !d.isArray(b) ? [b] : b, f = 0, q = b.length; f < q; f++) {
+                var j = this._resolveExtends(b[f]);
+                if (j)
+                    if (d.isArray(j)) this._expandButton(a, j, c, e);
+                    else {
+                        var p = this._buildButton(j, c);
+                        if (p) {
+                            e !== m ? (a.splice(e, 0, p), e++) : a.push(p);
+                            if (p.conf.buttons) {
+                                var u = this.c.dom.collection;
+                                p.collection = d("<" + u.tag + "/>").addClass(u.className).attr("role", "menu");
+                                p.conf._collection = p.collection;
+                                this._expandButton(p.buttons, p.conf.buttons, !0, e)
+                            }
+                            j.init && j.init.call(g.button(p.node), g, d(p.node), j);
+                            h++
+                        }
+                    }
+            }
+        },
+        _buildButton: function(a,
+            b) {
+            var c = this.c.dom.button,
+                e = this.c.dom.buttonLiner,
+                g = this.c.dom.collection,
+                h = this.s.dt,
+                f = function(b) {
+                    return "function" === typeof b ? b(h, j, a) : b
+                };
+            b && g.button && (c = g.button);
+            b && g.buttonLiner && (e = g.buttonLiner);
+            if (a.available && !a.available(h, a)) return !1;
+            var q = function(a, b, c, e) {
+                    e.action.call(b.button(c), a, b, c, e);
+                    d(b.table().node()).triggerHandler("buttons-action.dt", [b.button(c), b, c, e])
+                },
+                g = a.tag || c.tag,
+                j = d("<" + g + "/>").addClass(c.className).attr("tabindex", this.s.dt.settings()[0].iTabIndex).attr("aria-controls",
+                    this.s.dt.table().node().id).on("click.dtb", function(b) {
+                    b.preventDefault();
+                    !j.hasClass(c.disabled) && a.action && q(b, h, j, a);
+                    j.blur()
+                }).on("keyup.dtb", function(b) {
+                    b.keyCode === 13 && !j.hasClass(c.disabled) && a.action && q(b, h, j, a)
+                });
+            "a" === g.toLowerCase() && j.attr("href", "#");
+            "button" === g.toLowerCase() && j.attr("type", "button");
+            e.tag ? (g = d("<" + e.tag + "/>").html(f(a.text)).addClass(e.className), "a" === e.tag.toLowerCase() && g.attr("href", "#"), j.append(g)) : j.html(f(a.text));
+            !1 === a.enabled && j.addClass(c.disabled);
+            a.className &&
+                j.addClass(a.className);
+            a.titleAttr && j.attr("title", f(a.titleAttr));
+            a.attr && j.attr(a.attr);
+            a.namespace || (a.namespace = ".dt-button-" + y++);
+            e = (e = this.c.dom.buttonContainer) && e.tag ? d("<" + e.tag + "/>").addClass(e.className).append(j) : j;
+            this._addKey(a);
+            return {
+                conf: a,
+                node: j.get(0),
+                inserter: e,
+                buttons: [],
+                inCollection: b,
+                collection: null
+            }
+        },
+        _nodeToButton: function(a, b) {
+            b || (b = this.s.buttons);
+            for (var c = 0, e = b.length; c < e; c++) {
+                if (b[c].node === a) return b[c];
+                if (b[c].buttons.length) {
+                    var d = this._nodeToButton(a, b[c].buttons);
+                    if (d) return d
+                }
+            }
+        },
+        _nodeToHost: function(a, b) {
+            b || (b = this.s.buttons);
+            for (var c = 0, e = b.length; c < e; c++) {
+                if (b[c].node === a) return b;
+                if (b[c].buttons.length) {
+                    var d = this._nodeToHost(a, b[c].buttons);
+                    if (d) return d
+                }
+            }
+        },
+        _keypress: function(a, b) {
+            if (!b._buttonsHandled) {
+                var c = function(e) {
+                    for (var g = 0, h = e.length; g < h; g++) {
+                        var f = e[g].conf,
+                            q = e[g].node;
+                        if (f.key)
+                            if (f.key === a) b._buttonsHandled = !0, d(q).click();
+                            else if (d.isPlainObject(f.key) && f.key.key === a && (!f.key.shiftKey || b.shiftKey))
+                            if (!f.key.altKey || b.altKey)
+                                if (!f.key.ctrlKey ||
+                                    b.ctrlKey)
+                                    if (!f.key.metaKey || b.metaKey) b._buttonsHandled = !0, d(q).click();
+                        e[g].buttons.length && c(e[g].buttons)
+                    }
+                };
+                c(this.s.buttons)
+            }
+        },
+        _removeKey: function(a) {
+            if (a.key) {
+                var b = d.isPlainObject(a.key) ? a.key.key : a.key,
+                    a = this.s.listenKeys.split(""),
+                    b = d.inArray(b, a);
+                a.splice(b, 1);
+                this.s.listenKeys = a.join("")
+            }
+        },
+        _resolveExtends: function(a) {
+            for (var b = this.s.dt, c, e, g = function(c) {
+                    for (var e = 0; !d.isPlainObject(c) && !d.isArray(c);) {
+                        if (c === m) return;
+                        if ("function" === typeof c) {
+                            if (c = c(b, a), !c) return !1
+                        } else if ("string" ===
+                            typeof c) {
+                            if (!k[c]) throw "Unknown button type: " + c;
+                            c = k[c]
+                        }
+                        e++;
+                        if (30 < e) throw "Buttons: Too many iterations";
+                    }
+                    return d.isArray(c) ? c : d.extend({}, c)
+                }, a = g(a); a && a.extend;) {
+                if (!k[a.extend]) throw "Cannot extend unknown button type: " + a.extend;
+                var h = g(k[a.extend]);
+                if (d.isArray(h)) return h;
+                if (!h) return !1;
+                c = h.className;
+                a = d.extend({}, h, a);
+                c && a.className !== c && (a.className = c + " " + a.className);
+                var f = a.postfixButtons;
+                if (f) {
+                    a.buttons || (a.buttons = []);
+                    c = 0;
+                    for (e = f.length; c < e; c++) a.buttons.push(f[c]);
+                    a.postfixButtons = null
+                }
+                if (f =
+                    a.prefixButtons) {
+                    a.buttons || (a.buttons = []);
+                    c = 0;
+                    for (e = f.length; c < e; c++) a.buttons.splice(c, 0, f[c]);
+                    a.prefixButtons = null
+                }
+                a.extend = h.extend
+            }
+            return a
+        }
+    });
+    l.background = function(a, b, c) {
+        c === m && (c = 400);
+        a ? d("<div/>").addClass(b).css("display", "none").appendTo("body").fadeIn(c) : d("body > div." + b).fadeOut(c, function() {
+            d(this).removeClass(b).remove()
+        })
+    };
+    l.instanceSelector = function(a, b) {
+        if (!a) return d.map(b, function(a) {
+            return a.inst
+        });
+        var c = [],
+            e = d.map(b, function(a) {
+                return a.name
+            }),
+            g = function(a) {
+                if (d.isArray(a))
+                    for (var f =
+                            0, q = a.length; f < q; f++) g(a[f]);
+                else "string" === typeof a ? -1 !== a.indexOf(",") ? g(a.split(",")) : (a = d.inArray(d.trim(a), e), -1 !== a && c.push(b[a].inst)) : "number" === typeof a && c.push(b[a].inst)
+            };
+        g(a);
+        return c
+    };
+    l.buttonSelector = function(a, b) {
+        for (var c = [], e = function(a, b, c) {
+                for (var d, g, f = 0, h = b.length; f < h; f++)
+                    if (d = b[f]) g = c !== m ? c + f : f + "", a.push({
+                        node: d.node,
+                        name: d.conf.name,
+                        idx: g
+                    }), d.buttons && e(a, d.buttons, g + "-")
+            }, g = function(a, b) {
+                var f, h, i = [];
+                e(i, b.s.buttons);
+                f = d.map(i, function(a) {
+                    return a.node
+                });
+                if (d.isArray(a) || a instanceof d) {
+                    f = 0;
+                    for (h = a.length; f < h; f++) g(a[f], b)
+                } else if (null === a || a === m || "*" === a) {
+                    f = 0;
+                    for (h = i.length; f < h; f++) c.push({
+                        inst: b,
+                        node: i[f].node
+                    })
+                } else if ("number" === typeof a) c.push({
+                    inst: b,
+                    node: b.s.buttons[a].node
+                });
+                else if ("string" === typeof a)
+                    if (-1 !== a.indexOf(",")) {
+                        i = a.split(",");
+                        f = 0;
+                        for (h = i.length; f < h; f++) g(d.trim(i[f]), b)
+                    } else if (a.match(/^\d+(\-\d+)*$/)) f = d.map(i, function(a) {
+                    return a.idx
+                }), c.push({
+                    inst: b,
+                    node: i[d.inArray(a, f)].node
+                });
+                else if (-1 !== a.indexOf(":name")) {
+                    var k = a.replace(":name", "");
+                    f = 0;
+                    for (h =
+                        i.length; f < h; f++) i[f].name === k && c.push({
+                        inst: b,
+                        node: i[f].node
+                    })
+                } else d(f).filter(a).each(function() {
+                    c.push({
+                        inst: b,
+                        node: this
+                    })
+                });
+                else "object" === typeof a && a.nodeName && (i = d.inArray(a, f), -1 !== i && c.push({
+                    inst: b,
+                    node: f[i]
+                }))
+            }, h = 0, f = a.length; h < f; h++) g(b, a[h]);
+        return c
+    };
+    l.defaults = {
+        buttons: ["copy", "excel", "csv", "pdf", "print"],
+        name: "main",
+        tabIndex: 0,
+        dom: {
+            container: {
+                tag: "div",
+                className: "dt-buttons"
+            },
+            collection: {
+                tag: "div",
+                className: "dt-button-collection"
+            },
+            button: {
+                tag: "button",
+                className: "dt-button",
+                active: "active",
+                disabled: "disabled"
+            },
+            buttonLiner: {
+                tag: "span",
+                className: ""
+            }
+        }
+    };
+    l.version = "1.5.2";
+    d.extend(k, {
+        collection: {
+            text: function(a) {
+                return a.i18n("buttons.collection", "Collection")
+            },
+            className: "buttons-collection",
+            action: function(a, b, c, e) {
+                var g = d(c).parents("div.dt-button-collection"),
+                    a = c.position(),
+                    h = d(b.table().container()),
+                    f = !1,
+                    i = c;
+                g.length && (f = d(".dt-button-collection").position(), i = g, d("body").trigger("click.dtb-collection"));
+                i.parents("body")[0] !== o.body && (i = o.body.lastChild);
+                e._collection.addClass(e.collectionLayout).css("display",
+                    "none").insertAfter(i).fadeIn(e.fade);
+                g = e._collection.css("position");
+                f && "absolute" === g ? e._collection.css({
+                    top: f.top,
+                    left: f.left
+                }) : "absolute" === g ? (e._collection.css({
+                    top: a.top + c.outerHeight(),
+                    left: a.left
+                }), f = h.offset().top + h.height(), f = a.top + c.outerHeight() + e._collection.outerHeight() - f, g = a.top - e._collection.outerHeight(), g = h.offset().top - g, (f > g || e.dropup) && e._collection.css("top", a.top - e._collection.outerHeight() - 5), f = a.left + e._collection.outerWidth(), h = h.offset().left + h.width(), f > h && e._collection.css("left",
+                    a.left - (f - h)), c = c.offset().left + e._collection.outerWidth(), c > d(n).width() && e._collection.css("left", a.left - (c - d(n).width()))) : (c = e._collection.height() / 2, c > d(n).height() / 2 && (c = d(n).height() / 2), e._collection.css("marginTop", -1 * c));
+                e.background && l.background(!0, e.backgroundClassName, e.fade);
+                var j = function() {
+                    e._collection.fadeOut(e.fade, function() {
+                        e._collection.detach()
+                    });
+                    d("div.dt-button-background").off("click.dtb-collection");
+                    l.background(false, e.backgroundClassName, e.fade);
+                    d("body").off(".dtb-collection");
+                    b.off("buttons-action.b-internal")
+                };
+                setTimeout(function() {
+                    d("div.dt-button-background").on("click.dtb-collection", function() {});
+                    d("body").on("click.dtb-collection", function(a) {
+                        var b = d.fn.addBack ? "addBack" : "andSelf";
+                        d(a.target).parents()[b]().filter(e._collection).length || j()
+                    }).on("keyup.dtb-collection", function(a) {
+                        a.keyCode === 27 && j()
+                    });
+                    if (e.autoClose) b.on("buttons-action.b-internal", function() {
+                        j()
+                    })
+                }, 10)
+            },
+            background: !0,
+            collectionLayout: "",
+            backgroundClassName: "dt-button-background",
+            autoClose: !1,
+            fade: 400,
+            attr: {
+                "aria-haspopup": !0
+            }
+        },
+        copy: function(a, b) {
+            if (k.copyHtml5) return "copyHtml5";
+            if (k.copyFlash && k.copyFlash.available(a, b)) return "copyFlash"
+        },
+        csv: function(a, b) {
+            if (k.csvHtml5 && k.csvHtml5.available(a, b)) return "csvHtml5";
+            if (k.csvFlash && k.csvFlash.available(a, b)) return "csvFlash"
+        },
+        excel: function(a, b) {
+            if (k.excelHtml5 && k.excelHtml5.available(a, b)) return "excelHtml5";
+            if (k.excelFlash && k.excelFlash.available(a, b)) return "excelFlash"
+        },
+        pdf: function(a, b) {
+            if (k.pdfHtml5 && k.pdfHtml5.available(a, b)) return "pdfHtml5";
+            if (k.pdfFlash && k.pdfFlash.available(a, b)) return "pdfFlash"
+        },
+        pageLength: function(a) {
+            var a = a.settings()[0].aLengthMenu,
+                b = d.isArray(a[0]) ? a[0] : a,
+                c = d.isArray(a[0]) ? a[1] : a,
+                e = function(a) {
+                    return a.i18n("buttons.pageLength", {
+                        "-1": "Show all rows",
+                        _: "Show %d rows"
+                    }, a.page.len())
+                };
+            return {
+                extend: "collection",
+                text: e,
+                className: "buttons-page-length",
+                autoClose: !0,
+                buttons: d.map(b, function(a, b) {
+                    return {
+                        text: c[b],
+                        className: "button-page-length",
+                        action: function(b, c) {
+                            c.page.len(a).draw()
+                        },
+                        init: function(b, c, e) {
+                            var d = this,
+                                c = function() {
+                                    d.active(b.page.len() === a)
+                                };
+                            b.on("length.dt" + e.namespace, c);
+                            c()
+                        },
+                        destroy: function(a, b, c) {
+                            a.off("length.dt" + c.namespace)
+                        }
+                    }
+                }),
+                init: function(a, b, c) {
+                    var d = this;
+                    a.on("length.dt" + c.namespace, function() {
+                        d.text(e(a))
+                    })
+                },
+                destroy: function(a, b, c) {
+                    a.off("length.dt" + c.namespace)
+                }
+            }
+        }
+    });
+    i.Api.register("buttons()", function(a, b) {
+        b === m && (b = a, a = m);
+        this.selector.buttonGroup = a;
+        var c = this.iterator(!0, "table", function(c) {
+            if (c._buttons) return l.buttonSelector(l.instanceSelector(a, c._buttons), b)
+        }, !0);
+        c._groupSelector =
+            a;
+        return c
+    });
+    i.Api.register("button()", function(a, b) {
+        var c = this.buttons(a, b);
+        1 < c.length && c.splice(1, c.length);
+        return c
+    });
+    i.Api.registerPlural("buttons().active()", "button().active()", function(a) {
+        return a === m ? this.map(function(a) {
+            return a.inst.active(a.node)
+        }) : this.each(function(b) {
+            b.inst.active(b.node, a)
+        })
+    });
+    i.Api.registerPlural("buttons().action()", "button().action()", function(a) {
+        return a === m ? this.map(function(a) {
+            return a.inst.action(a.node)
+        }) : this.each(function(b) {
+            b.inst.action(b.node, a)
+        })
+    });
+    i.Api.register(["buttons().enable()",
+        "button().enable()"
+    ], function(a) {
+        return this.each(function(b) {
+            b.inst.enable(b.node, a)
+        })
+    });
+    i.Api.register(["buttons().disable()", "button().disable()"], function() {
+        return this.each(function(a) {
+            a.inst.disable(a.node)
+        })
+    });
+    i.Api.registerPlural("buttons().nodes()", "button().node()", function() {
+        var a = d();
+        d(this.each(function(b) {
+            a = a.add(b.inst.node(b.node))
+        }));
+        return a
+    });
+    i.Api.registerPlural("buttons().processing()", "button().processing()", function(a) {
+        return a === m ? this.map(function(a) {
+                return a.inst.processing(a.node)
+            }) :
+            this.each(function(b) {
+                b.inst.processing(b.node, a)
+            })
+    });
+    i.Api.registerPlural("buttons().text()", "button().text()", function(a) {
+        return a === m ? this.map(function(a) {
+            return a.inst.text(a.node)
+        }) : this.each(function(b) {
+            b.inst.text(b.node, a)
+        })
+    });
+    i.Api.registerPlural("buttons().trigger()", "button().trigger()", function() {
+        return this.each(function(a) {
+            a.inst.node(a.node).trigger("click")
+        })
+    });
+    i.Api.registerPlural("buttons().containers()", "buttons().container()", function() {
+        var a = d(),
+            b = this._groupSelector;
+        this.iterator(!0,
+            "table",
+            function(c) {
+                if (c._buttons)
+                    for (var c = l.instanceSelector(b, c._buttons), d = 0, g = c.length; d < g; d++) a = a.add(c[d].container())
+            });
+        return a
+    });
+    i.Api.register("button().add()", function(a, b) {
+        var c = this.context;
+        c.length && (c = l.instanceSelector(this._groupSelector, c[0]._buttons), c.length && c[0].add(b, a));
+        return this.button(this._groupSelector, a)
+    });
+    i.Api.register("buttons().destroy()", function() {
+        this.pluck("inst").unique().each(function(a) {
+            a.destroy()
+        });
+        return this
+    });
+    i.Api.registerPlural("buttons().remove()",
+        "buttons().remove()",
+        function() {
+            this.each(function(a) {
+                a.inst.remove(a.node)
+            });
+            return this
+        });
+    var r;
+    i.Api.register("buttons.info()", function(a, b, c) {
+        var e = this;
+        if (!1 === a) return d("#datatables_buttons_info").fadeOut(function() {
+            d(this).remove()
+        }), clearTimeout(r), r = null, this;
+        r && clearTimeout(r);
+        d("#datatables_buttons_info").length && d("#datatables_buttons_info").remove();
+        d('<div id="datatables_buttons_info" class="dt-button-info"/>').html(a ? "<h2>" + a + "</h2>" : "").append(d("<div/>")["string" === typeof b ? "html" :
+            "append"](b)).css("display", "none").appendTo("body").fadeIn();
+        c !== m && 0 !== c && (r = setTimeout(function() {
+            e.buttons.info(!1)
+        }, c));
+        return this
+    });
+    i.Api.register("buttons.exportData()", function(a) {
+        if (this.context.length) {
+            var b = new i.Api(this.context[0]),
+                c = d.extend(!0, {}, {
+                    rows: null,
+                    columns: "",
+                    modifier: {
+                        search: "applied",
+                        order: "applied"
+                    },
+                    orthogonal: "display",
+                    stripHtml: !0,
+                    stripNewlines: !0,
+                    decodeEntities: !0,
+                    trim: !0,
+                    format: {
+                        header: function(a) {
+                            return e(a)
+                        },
+                        footer: function(a) {
+                            return e(a)
+                        },
+                        body: function(a) {
+                            return e(a)
+                        }
+                    },
+                    customizeData: null
+                }, a),
+                e = function(a) {
+                    if ("string" !== typeof a) return a;
+                    a = a.replace(/<script\b[^<]*(?:(?!<\/script>)<[^<]*)*<\/script>/gi, "");
+                    a = a.replace(/<!\-\-.*?\-\->/g, "");
+                    c.stripHtml && (a = a.replace(/<[^>]*>/g, ""));
+                    c.trim && (a = a.replace(/^\s+|\s+$/g, ""));
+                    c.stripNewlines && (a = a.replace(/\n/g, " "));
+                    c.decodeEntities && (v.innerHTML = a, a = v.value);
+                    return a
+                },
+                a = b.columns(c.columns).indexes().map(function(a) {
+                    var d = b.column(a).header();
+                    return c.format.header(d.innerHTML, a, d)
+                }).toArray(),
+                g = b.table().footer() ? b.columns(c.columns).indexes().map(function(a) {
+                    var d =
+                        b.column(a).footer();
+                    return c.format.footer(d ? d.innerHTML : "", a, d)
+                }).toArray() : null,
+                h = d.extend({}, c.modifier);
+            b.select && "function" === typeof b.select.info && h.selected === m && b.rows(c.rows, d.extend({
+                selected: !0
+            }, h)).any() && d.extend(h, {
+                selected: !0
+            });
+            for (var h = b.rows(c.rows, h).indexes().toArray(), f = b.cells(h, c.columns), h = f.render(c.orthogonal).toArray(), f = f.nodes().toArray(), k = a.length, j = [], l = 0, n = 0, o = 0 < k ? h.length / k : 0; n < o; n++) {
+                for (var r = [k], s = 0; s < k; s++) r[s] = c.format.body(h[l], n, s, f[l]), l++;
+                j[n] = r
+            }
+            a = {
+                header: a,
+                footer: g,
+                body: j
+            };
+            c.customizeData && c.customizeData(a);
+            return a
+        }
+    });
+    i.Api.register("buttons.exportInfo()", function(a) {
+        a || (a = {});
+        var b;
+        var c = a;
+        b = "*" === c.filename && "*" !== c.title && c.title !== m && null !== c.title && "" !== c.title ? c.title : c.filename;
+        "function" === typeof b && (b = b());
+        b === m || null === b ? b = null : (-1 !== b.indexOf("*") && (b = d.trim(b.replace("*", d("head > title").text()))), b = b.replace(/[^a-zA-Z0-9_\u00A1-\uFFFF\.,\-_ !\(\)]/g, ""), (c = t(c.extension)) || (c = ""), b += c);
+        c = t(a.title);
+        c = null === c ? null : -1 !== c.indexOf("*") ?
+            c.replace("*", d("head > title").text() || "Exported data") : c;
+        return {
+            filename: b,
+            title: c,
+            messageTop: w(this, a.message || a.messageTop, "top"),
+            messageBottom: w(this, a.messageBottom, "bottom")
+        }
+    });
+    var t = function(a) {
+            return null === a || a === m ? null : "function" === typeof a ? a() : a
+        },
+        w = function(a, b, c) {
+            b = t(b);
+            if (null === b) return null;
+            a = d("caption", a.table().container()).eq(0);
+            return "*" === b ? a.css("caption-side") !== c ? null : a.length ? a.text() : "" : b
+        },
+        v = d("<textarea/>")[0];
+    d.fn.dataTable.Buttons = l;
+    d.fn.DataTable.Buttons = l;
+    d(o).on("init.dt plugin-init.dt",
+        function(a, b) {
+            if ("dt" === a.namespace) {
+                var c = b.oInit.buttons || i.defaults.buttons;
+                c && !b._buttons && (new l(b, c)).container()
+            }
+        });
+    i.ext.feature.push({
+        fnInit: function(a) {
+            var a = new i.Api(a),
+                b = a.init().buttons || i.defaults.buttons;
+            return (new l(a, b)).container()
+        },
+        cFeature: "B"
+    });
+    return l
+});
\ No newline at end of file

From a8ba0e2fd86f75ebb3639a2e3f45f4645989feeb Mon Sep 17 00:00:00 2001
From: mtyszler <tyszler.jobs@gmail.com>
Date: Fri, 3 Jan 2020 13:43:55 +0100
Subject: [PATCH 02/12] unminify code to improve readabilitty

(cherry picked from commit 3178277ec409a3261aa88c08fb4b7ec51b02865e)
---
 .../Buttons/js/buttons.html5.min.js           | 611 +++++++++++++++++-
 1 file changed, 583 insertions(+), 28 deletions(-)

diff --git a/inst/htmlwidgets/lib/datatables-extensions/Buttons/js/buttons.html5.min.js b/inst/htmlwidgets/lib/datatables-extensions/Buttons/js/buttons.html5.min.js
index aa4ef411..222bb320 100644
--- a/inst/htmlwidgets/lib/datatables-extensions/Buttons/js/buttons.html5.min.js
+++ b/inst/htmlwidgets/lib/datatables-extensions/Buttons/js/buttons.html5.min.js
@@ -1,28 +1,583 @@
-(function(i){"function"===typeof define&&define.amd?define(["jquery","datatables.net","datatables.net-buttons"],function(j){return i(j,window,document)}):"object"===typeof exports?module.exports=function(j,l,v,u){j||(j=window);if(!l||!l.fn.dataTable)l=require("datatables.net")(j,l).$;l.fn.dataTable.Buttons||require("datatables.net-buttons")(j,l);return i(l,j,j.document,v,u)}:i(jQuery,window,document)})(function(i,j,l,v,u,s){function z(a){for(var b="";0<=a;)b=String.fromCharCode(a%26+65)+b,a=Math.floor(a/
-26)-1;return b}function A(a,b){w===s&&(w=-1===y.serializeToString(i.parseXML(B["xl/worksheets/sheet1.xml"])).indexOf("xmlns:r"));i.each(b,function(d,c){if(i.isPlainObject(c)){var b=a.folder(d);A(b,c)}else{if(w){var b=c.childNodes[0],g,e,n=[];for(g=b.attributes.length-1;0<=g;g--){e=b.attributes[g].nodeName;var h=b.attributes[g].nodeValue;-1!==e.indexOf(":")&&(n.push({name:e,value:h}),b.removeAttribute(e))}g=0;for(e=n.length;g<e;g++)h=c.createAttribute(n[g].name.replace(":","_dt_b_namespace_token_")),
-h.value=n[g].value,b.setAttributeNode(h)}b=y.serializeToString(c);w&&(-1===b.indexOf("<?xml")&&(b='<?xml version="1.0" encoding="UTF-8" standalone="yes"?>'+b),b=b.replace(/_dt_b_namespace_token_/g,":"));b=b.replace(/<([^<>]*?) xmlns=""([^<>]*?)>/g,"<$1 $2>");a.file(d,b)}})}function q(a,b,d){var c=a.createElement(b);d&&(d.attr&&i(c).attr(d.attr),d.children&&i.each(d.children,function(a,b){c.appendChild(b)}),null!==d.text&&d.text!==s&&c.appendChild(a.createTextNode(d.text)));return c}function K(a,b){var d=
-a.header[b].length,c;a.footer&&a.footer[b].length>d&&(d=a.footer[b].length);for(var f=0,g=a.body.length;f<g;f++)if(c=a.body[f][b],c=null!==c&&c!==s?c.toString():"",-1!==c.indexOf("\n")?(c=c.split("\n"),c.sort(function(a,c){return c.length-a.length}),c=c[0].length):c=c.length,c>d&&(d=c),40<d)return 52;d*=1.3;return 6<d?d:6}var o=i.fn.dataTable,t;var h="undefined"!==typeof self&&self||"undefined"!==typeof j&&j||this.content;if("undefined"===typeof h||"undefined"!==typeof navigator&&/MSIE [1-9]\./.test(navigator.userAgent))t=
-void 0;else{var x=h.document.createElementNS("http://www.w3.org/1999/xhtml","a"),L="download"in x,M=/constructor/i.test(h.HTMLElement)||h.safari,C=/CriOS\/[\d]+/.test(navigator.userAgent),N=function(a){(h.setImmediate||h.setTimeout)(function(){throw a;},0)},D=function(a){setTimeout(function(){"string"===typeof a?(h.URL||h.webkitURL||h).revokeObjectURL(a):a.remove()},4E4)},E=function(a){return/^\s*(?:text\/\S*|application\/xml|\S*\/\S*\+xml)\s*;.*charset\s*=\s*utf-8/i.test(a.type)?new Blob([String.fromCharCode(65279),
-a],{type:a.type}):a},F=function(a,b,d){d||(a=E(a));var c=this,d="application/octet-stream"===a.type,f,g=function(){for(var a=["writestart","progress","write","writeend"],a=[].concat(a),b=a.length;b--;){var d=c["on"+a[b]];if("function"===typeof d)try{d.call(c,c)}catch(e){N(e)}}};c.readyState=c.INIT;if(L)f=(h.URL||h.webkitURL||h).createObjectURL(a),setTimeout(function(){x.href=f;x.download=b;var a=new MouseEvent("click");x.dispatchEvent(a);g();D(f);c.readyState=c.DONE});else if((C||d&&M)&&h.FileReader){var e=
-new FileReader;e.onloadend=function(){var a=C?e.result:e.result.replace(/^data:[^;]*;/,"data:attachment/file;");h.open(a,"_blank")||(h.location.href=a);c.readyState=c.DONE;g()};e.readAsDataURL(a);c.readyState=c.INIT}else f||(f=(h.URL||h.webkitURL||h).createObjectURL(a)),d?h.location.href=f:h.open(f,"_blank")||(h.location.href=f),c.readyState=c.DONE,g(),D(f)},m=F.prototype;"undefined"!==typeof navigator&&navigator.msSaveOrOpenBlob?t=function(a,b,d){b=b||a.name||"download";d||(a=E(a));return navigator.msSaveOrOpenBlob(a,
-b)}:(m.abort=function(){},m.readyState=m.INIT=0,m.WRITING=1,m.DONE=2,m.error=m.onwritestart=m.onprogress=m.onwrite=m.onabort=m.onerror=m.onwriteend=null,t=function(a,b,d){return new F(a,b||a.name||"download",d)})}o.fileSave=t;var O=function(a){var b="Sheet1";a.sheetName&&(b=a.sheetName.replace(/[\[\]\*\/\\\?\:]/g,""));return b},G=function(a){return a.newline?a.newline:navigator.userAgent.match(/Windows/)?"\r\n":"\n"},H=function(a,b){for(var d=G(b),c=a.buttons.exportData(b.exportOptions),f=b.fieldBoundary,
-g=b.fieldSeparator,e=RegExp(f,"g"),n=b.escapeChar!==s?b.escapeChar:"\\",i=function(a){for(var c="",b=0,d=a.length;b<d;b++)0<b&&(c+=g),c+=f?f+(""+a[b]).replace(e,n+f)+f:a[b];return c},h=b.header?i(c.header)+d:"",j=b.footer&&c.footer?d+i(c.footer):"",k=[],l=0,m=c.body.length;l<m;l++)k.push(i(c.body[l]));return{str:h+k.join(d)+j,rows:k.length}},I=function(){if(!(-1!==navigator.userAgent.indexOf("Safari")&&-1===navigator.userAgent.indexOf("Chrome")&&-1===navigator.userAgent.indexOf("Opera")))return!1;
-var a=navigator.userAgent.match(/AppleWebKit\/(\d+\.\d+)/);return a&&1<a.length&&603.1>1*a[1]?!0:!1};try{var y=new XMLSerializer,w}catch(P){}var B={"_rels/.rels":'<?xml version="1.0" encoding="UTF-8" standalone="yes"?><Relationships xmlns="http://schemas.openxmlformats.org/package/2006/relationships"><Relationship Id="rId1" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/officeDocument" Target="xl/workbook.xml"/></Relationships>',"xl/_rels/workbook.xml.rels":'<?xml version="1.0" encoding="UTF-8" standalone="yes"?><Relationships xmlns="http://schemas.openxmlformats.org/package/2006/relationships"><Relationship Id="rId1" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/worksheet" Target="worksheets/sheet1.xml"/><Relationship Id="rId2" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/styles" Target="styles.xml"/></Relationships>',
-"[Content_Types].xml":'<?xml version="1.0" encoding="UTF-8" standalone="yes"?><Types xmlns="http://schemas.openxmlformats.org/package/2006/content-types"><Default Extension="xml" ContentType="application/xml" /><Default Extension="rels" ContentType="application/vnd.openxmlformats-package.relationships+xml" /><Default Extension="jpeg" ContentType="image/jpeg" /><Override PartName="/xl/workbook.xml" ContentType="application/vnd.openxmlformats-officedocument.spreadsheetml.sheet.main+xml" /><Override PartName="/xl/worksheets/sheet1.xml" ContentType="application/vnd.openxmlformats-officedocument.spreadsheetml.worksheet+xml" /><Override PartName="/xl/styles.xml" ContentType="application/vnd.openxmlformats-officedocument.spreadsheetml.styles+xml" /></Types>',
-"xl/workbook.xml":'<?xml version="1.0" encoding="UTF-8" standalone="yes"?><workbook xmlns="http://schemas.openxmlformats.org/spreadsheetml/2006/main" xmlns:r="http://schemas.openxmlformats.org/officeDocument/2006/relationships"><fileVersion appName="xl" lastEdited="5" lowestEdited="5" rupBuild="24816"/><workbookPr showInkAnnotation="0" autoCompressPictures="0"/><bookViews><workbookView xWindow="0" yWindow="0" windowWidth="25600" windowHeight="19020" tabRatio="500"/></bookViews><sheets><sheet name="" sheetId="1" r:id="rId1"/></sheets></workbook>',
-"xl/worksheets/sheet1.xml":'<?xml version="1.0" encoding="UTF-8" standalone="yes"?><worksheet xmlns="http://schemas.openxmlformats.org/spreadsheetml/2006/main" xmlns:r="http://schemas.openxmlformats.org/officeDocument/2006/relationships" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" mc:Ignorable="x14ac" xmlns:x14ac="http://schemas.microsoft.com/office/spreadsheetml/2009/9/ac"><sheetData/><mergeCells count="0"/></worksheet>',"xl/styles.xml":'<?xml version="1.0" encoding="UTF-8"?><styleSheet xmlns="http://schemas.openxmlformats.org/spreadsheetml/2006/main" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" mc:Ignorable="x14ac" xmlns:x14ac="http://schemas.microsoft.com/office/spreadsheetml/2009/9/ac"><numFmts count="6"><numFmt numFmtId="164" formatCode="#,##0.00_- [$$-45C]"/><numFmt numFmtId="165" formatCode="&quot;£&quot;#,##0.00"/><numFmt numFmtId="166" formatCode="[$€-2] #,##0.00"/><numFmt numFmtId="167" formatCode="0.0%"/><numFmt numFmtId="168" formatCode="#,##0;(#,##0)"/><numFmt numFmtId="169" formatCode="#,##0.00;(#,##0.00)"/></numFmts><fonts count="5" x14ac:knownFonts="1"><font><sz val="11" /><name val="Calibri" /></font><font><sz val="11" /><name val="Calibri" /><color rgb="FFFFFFFF" /></font><font><sz val="11" /><name val="Calibri" /><b /></font><font><sz val="11" /><name val="Calibri" /><i /></font><font><sz val="11" /><name val="Calibri" /><u /></font></fonts><fills count="6"><fill><patternFill patternType="none" /></fill><fill><patternFill patternType="none" /></fill><fill><patternFill patternType="solid"><fgColor rgb="FFD9D9D9" /><bgColor indexed="64" /></patternFill></fill><fill><patternFill patternType="solid"><fgColor rgb="FFD99795" /><bgColor indexed="64" /></patternFill></fill><fill><patternFill patternType="solid"><fgColor rgb="ffc6efce" /><bgColor indexed="64" /></patternFill></fill><fill><patternFill patternType="solid"><fgColor rgb="ffc6cfef" /><bgColor indexed="64" /></patternFill></fill></fills><borders count="2"><border><left /><right /><top /><bottom /><diagonal /></border><border diagonalUp="false" diagonalDown="false"><left style="thin"><color auto="1" /></left><right style="thin"><color auto="1" /></right><top style="thin"><color auto="1" /></top><bottom style="thin"><color auto="1" /></bottom><diagonal /></border></borders><cellStyleXfs count="1"><xf numFmtId="0" fontId="0" fillId="0" borderId="0" /></cellStyleXfs><cellXfs count="67"><xf numFmtId="0" fontId="0" fillId="0" borderId="0" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="1" fillId="0" borderId="0" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="2" fillId="0" borderId="0" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="3" fillId="0" borderId="0" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="4" fillId="0" borderId="0" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="0" fillId="2" borderId="0" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="1" fillId="2" borderId="0" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="2" fillId="2" borderId="0" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="3" fillId="2" borderId="0" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="4" fillId="2" borderId="0" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="0" fillId="3" borderId="0" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="1" fillId="3" borderId="0" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="2" fillId="3" borderId="0" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="3" fillId="3" borderId="0" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="4" fillId="3" borderId="0" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="0" fillId="4" borderId="0" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="1" fillId="4" borderId="0" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="2" fillId="4" borderId="0" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="3" fillId="4" borderId="0" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="4" fillId="4" borderId="0" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="0" fillId="5" borderId="0" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="1" fillId="5" borderId="0" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="2" fillId="5" borderId="0" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="3" fillId="5" borderId="0" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="4" fillId="5" borderId="0" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="0" fillId="0" borderId="1" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="1" fillId="0" borderId="1" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="2" fillId="0" borderId="1" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="3" fillId="0" borderId="1" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="4" fillId="0" borderId="1" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="0" fillId="2" borderId="1" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="1" fillId="2" borderId="1" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="2" fillId="2" borderId="1" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="3" fillId="2" borderId="1" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="4" fillId="2" borderId="1" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="0" fillId="3" borderId="1" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="1" fillId="3" borderId="1" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="2" fillId="3" borderId="1" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="3" fillId="3" borderId="1" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="4" fillId="3" borderId="1" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="0" fillId="4" borderId="1" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="1" fillId="4" borderId="1" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="2" fillId="4" borderId="1" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="3" fillId="4" borderId="1" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="4" fillId="4" borderId="1" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="0" fillId="5" borderId="1" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="1" fillId="5" borderId="1" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="2" fillId="5" borderId="1" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="3" fillId="5" borderId="1" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="4" fillId="5" borderId="1" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="0" fillId="0" borderId="0" applyFont="1" applyFill="1" applyBorder="1" xfId="0" applyAlignment="1"><alignment horizontal="left"/></xf><xf numFmtId="0" fontId="0" fillId="0" borderId="0" applyFont="1" applyFill="1" applyBorder="1" xfId="0" applyAlignment="1"><alignment horizontal="center"/></xf><xf numFmtId="0" fontId="0" fillId="0" borderId="0" applyFont="1" applyFill="1" applyBorder="1" xfId="0" applyAlignment="1"><alignment horizontal="right"/></xf><xf numFmtId="0" fontId="0" fillId="0" borderId="0" applyFont="1" applyFill="1" applyBorder="1" xfId="0" applyAlignment="1"><alignment horizontal="fill"/></xf><xf numFmtId="0" fontId="0" fillId="0" borderId="0" applyFont="1" applyFill="1" applyBorder="1" xfId="0" applyAlignment="1"><alignment textRotation="90"/></xf><xf numFmtId="0" fontId="0" fillId="0" borderId="0" applyFont="1" applyFill="1" applyBorder="1" xfId="0" applyAlignment="1"><alignment wrapText="1"/></xf><xf numFmtId="9"   fontId="0" fillId="0" borderId="0" applyFont="1" applyFill="1" applyBorder="1" xfId="0" applyNumberFormat="1"/><xf numFmtId="164" fontId="0" fillId="0" borderId="0" applyFont="1" applyFill="1" applyBorder="1" xfId="0" applyNumberFormat="1"/><xf numFmtId="165" fontId="0" fillId="0" borderId="0" applyFont="1" applyFill="1" applyBorder="1" xfId="0" applyNumberFormat="1"/><xf numFmtId="166" fontId="0" fillId="0" borderId="0" applyFont="1" applyFill="1" applyBorder="1" xfId="0" applyNumberFormat="1"/><xf numFmtId="167" fontId="0" fillId="0" borderId="0" applyFont="1" applyFill="1" applyBorder="1" xfId="0" applyNumberFormat="1"/><xf numFmtId="168" fontId="0" fillId="0" borderId="0" applyFont="1" applyFill="1" applyBorder="1" xfId="0" applyNumberFormat="1"/><xf numFmtId="169" fontId="0" fillId="0" borderId="0" applyFont="1" applyFill="1" applyBorder="1" xfId="0" applyNumberFormat="1"/><xf numFmtId="3" fontId="0" fillId="0" borderId="0" applyFont="1" applyFill="1" applyBorder="1" xfId="0" applyNumberFormat="1"/><xf numFmtId="4" fontId="0" fillId="0" borderId="0" applyFont="1" applyFill="1" applyBorder="1" xfId="0" applyNumberFormat="1"/><xf numFmtId="1" fontId="0" fillId="0" borderId="0" applyFont="1" applyFill="1" applyBorder="1" xfId="0" applyNumberFormat="1"/><xf numFmtId="2" fontId="0" fillId="0" borderId="0" applyFont="1" applyFill="1" applyBorder="1" xfId="0" applyNumberFormat="1"/></cellXfs><cellStyles count="1"><cellStyle name="Normal" xfId="0" builtinId="0" /></cellStyles><dxfs count="0" /><tableStyles count="0" defaultTableStyle="TableStyleMedium9" defaultPivotStyle="PivotStyleMedium4" /></styleSheet>'},
-J=[{match:/^\-?\d+\.\d%$/,style:60,fmt:function(a){return a/100}},{match:/^\-?\d+\.?\d*%$/,style:56,fmt:function(a){return a/100}},{match:/^\-?\$[\d,]+.?\d*$/,style:57},{match:/^\-?£[\d,]+.?\d*$/,style:58},{match:/^\-?€[\d,]+.?\d*$/,style:59},{match:/^\-?\d+$/,style:65},{match:/^\-?\d+\.\d{2}$/,style:66},{match:/^\([\d,]+\)$/,style:61,fmt:function(a){return-1*a.replace(/[\(\)]/g,"")}},{match:/^\([\d,]+\.\d{2}\)$/,style:62,fmt:function(a){return-1*a.replace(/[\(\)]/g,"")}},{match:/^\-?[\d,]+$/,style:63},
-{match:/^\-?[\d,]+\.\d{2}$/,style:64}];o.ext.buttons.copyHtml5={className:"buttons-copy buttons-html5",text:function(a){return a.i18n("buttons.copy","Copy")},action:function(a,b,d,c){this.processing(!0);var f=this,a=H(b,c),g=b.buttons.exportInfo(c),e=G(c),n=a.str,d=i("<div/>").css({height:1,width:1,overflow:"hidden",position:"fixed",top:0,left:0});g.title&&(n=g.title+e+e+n);g.messageTop&&(n=g.messageTop+e+e+n);g.messageBottom&&(n=n+e+e+g.messageBottom);c.customize&&(n=c.customize(n,c,b));c=i("<textarea readonly/>").val(n).appendTo(d);
-if(l.queryCommandSupported("copy")){d.appendTo(b.table().container());c[0].focus();c[0].select();try{var h=l.execCommand("copy");d.remove();if(h){b.buttons.info(b.i18n("buttons.copyTitle","Copy to clipboard"),b.i18n("buttons.copySuccess",{1:"Copied one row to clipboard",_:"Copied %d rows to clipboard"},a.rows),2E3);this.processing(!1);return}}catch(j){}}h=i("<span>"+b.i18n("buttons.copyKeys","Press <i>ctrl</i> or <i>⌘</i> + <i>C</i> to copy the table data<br>to your system clipboard.<br><br>To cancel, click this message or press escape.")+
-"</span>").append(d);b.buttons.info(b.i18n("buttons.copyTitle","Copy to clipboard"),h,0);c[0].focus();c[0].select();var m=i(h).closest(".dt-button-info"),k=function(){m.off("click.buttons-copy");i(l).off(".buttons-copy");b.buttons.info(!1)};m.on("click.buttons-copy",k);i(l).on("keydown.buttons-copy",function(a){27===a.keyCode&&(k(),f.processing(!1))}).on("copy.buttons-copy cut.buttons-copy",function(){k();f.processing(!1)})},exportOptions:{},fieldSeparator:"\t",fieldBoundary:"",header:!0,footer:!1,
-title:"*",messageTop:"*",messageBottom:"*"};o.ext.buttons.csvHtml5={bom:!1,className:"buttons-csv buttons-html5",available:function(){return j.FileReader!==s&&j.Blob},text:function(a){return a.i18n("buttons.csv","CSV")},action:function(a,b,d,c){this.processing(!0);var a=H(b,c).str,d=b.buttons.exportInfo(c),f=c.charset;c.customize&&(a=c.customize(a,c,b));!1!==f?(f||(f=l.characterSet||l.charset),f&&(f=";charset="+f)):f="";c.bom&&(a=""+a);t(new Blob([a],{type:"text/csv"+f}),d.filename,!0);this.processing(!1)},
-filename:"*",extension:".csv",exportOptions:{},fieldSeparator:",",fieldBoundary:'"',escapeChar:'"',charset:null,header:!0,footer:!1};o.ext.buttons.excelHtml5={className:"buttons-excel buttons-html5",available:function(){return j.FileReader!==s&&(v||j.JSZip)!==s&&!I()&&y},text:function(a){return a.i18n("buttons.excel","Excel")},action:function(a,b,d,c){this.processing(!0);var f=this,g=0,a=function(a){return i.parseXML(B[a])},e=a("xl/worksheets/sheet1.xml"),h=e.getElementsByTagName("sheetData")[0],
-a={_rels:{".rels":a("_rels/.rels")},xl:{_rels:{"workbook.xml.rels":a("xl/_rels/workbook.xml.rels")},"workbook.xml":a("xl/workbook.xml"),"styles.xml":a("xl/styles.xml"),worksheets:{"sheet1.xml":e}},"[Content_Types].xml":a("[Content_Types].xml")},d=b.buttons.exportData(c.exportOptions),l,m,r=function(a){l=g+1;m=q(e,"row",{attr:{r:l}});for(var b=0,d=a.length;b<d;b++){var f=z(b)+""+l,j=null;if(null===a[b]||a[b]===s||""===a[b])if(!0===c.createEmptyCells)a[b]="";else continue;var k=a[b];a[b]=i.trim(a[b]);
-for(var o=0,r=J.length;o<r;o++){var p=J[o];if(a[b].match&&!a[b].match(/^0\d+/)&&a[b].match(p.match)){j=a[b].replace(/[^\d\.\-]/g,"");p.fmt&&(j=p.fmt(j));j=q(e,"c",{attr:{r:f,s:p.style},children:[q(e,"v",{text:j})]});break}}j||("number"===typeof a[b]||a[b].match&&a[b].match(/^-?\d+(\.\d+)?$/)&&!a[b].match(/^0\d+/)?j=q(e,"c",{attr:{t:"n",r:f},children:[q(e,"v",{text:a[b]})]}):(k=!k.replace?k:k.replace(/[\x00-\x09\x0B\x0C\x0E-\x1F\x7F-\x9F]/g,""),j=q(e,"c",{attr:{t:"inlineStr",r:f},children:{row:q(e,
-"is",{children:{row:q(e,"t",{text:k,attr:{"xml:space":"preserve"}})}})}})));m.appendChild(j)}h.appendChild(m);g++};i("sheets sheet",a.xl["workbook.xml"]).attr("name",O(c));c.customizeData&&c.customizeData(d);var k=function(a,b){var c=i("mergeCells",e);c[0].appendChild(q(e,"mergeCell",{attr:{ref:"A"+a+":"+z(b)+a}}));c.attr("count",parseFloat(c.attr("count"))+1);i("row:eq("+(a-1)+") c",e).attr("s","51")},p=b.buttons.exportInfo(c);p.title&&(r([p.title],g),k(g,d.header.length-1));p.messageTop&&(r([p.messageTop],
-g),k(g,d.header.length-1));c.header&&(r(d.header,g),i("row:last c",e).attr("s","2"));for(var o=0,u=d.body.length;o<u;o++)r(d.body[o],g);c.footer&&d.footer&&(r(d.footer,g),i("row:last c",e).attr("s","2"));p.messageBottom&&(r([p.messageBottom],g),k(g,d.header.length-1));r=q(e,"cols");i("worksheet",e).prepend(r);k=0;for(o=d.header.length;k<o;k++)r.appendChild(q(e,"col",{attr:{min:k+1,max:k+1,width:K(d,k),customWidth:1}}));c.customize&&c.customize(a,c,b);0===i("mergeCells",e).children().length&&i("mergeCells",
-e).remove();b=new (v||j.JSZip);d={type:"blob",mimeType:"application/vnd.openxmlformats-officedocument.spreadsheetml.sheet"};A(b,a);b.generateAsync?b.generateAsync(d).then(function(a){t(a,p.filename);f.processing(false)}):(t(b.generate(d),p.filename),this.processing(!1))},filename:"*",extension:".xlsx",exportOptions:{},header:!0,footer:!1,title:"*",messageTop:"*",messageBottom:"*",createEmptyCells:!1};o.ext.buttons.pdfHtml5={className:"buttons-pdf buttons-html5",available:function(){return j.FileReader!==
-s&&(u||j.pdfMake)},text:function(a){return a.i18n("buttons.pdf","PDF")},action:function(a,b,d,c){this.processing(!0);var d=b.buttons.exportData(c.exportOptions),a=b.buttons.exportInfo(c),f=[];c.header&&f.push(i.map(d.header,function(a){return{text:"string"===typeof a?a:a+"",style:"tableHeader"}}));for(var g=0,e=d.body.length;g<e;g++)f.push(i.map(d.body[g],function(a){return{text:"string"===typeof a?a:a+"",style:g%2?"tableBodyEven":"tableBodyOdd"}}));c.footer&&d.footer&&f.push(i.map(d.footer,function(a){return{text:"string"===
-typeof a?a:a+"",style:"tableFooter"}}));d={pageSize:c.pageSize,pageOrientation:c.orientation,content:[{table:{headerRows:1,body:f},layout:"noBorders"}],styles:{tableHeader:{bold:!0,fontSize:11,color:"white",fillColor:"#2d4154",alignment:"center"},tableBodyEven:{},tableBodyOdd:{fillColor:"#f3f3f3"},tableFooter:{bold:!0,fontSize:11,color:"white",fillColor:"#2d4154"},title:{alignment:"center",fontSize:15},message:{}},defaultStyle:{fontSize:10}};a.messageTop&&d.content.unshift({text:a.messageTop,style:"message",
-margin:[0,0,0,12]});a.messageBottom&&d.content.push({text:a.messageBottom,style:"message",margin:[0,0,0,12]});a.title&&d.content.unshift({text:a.title,style:"title",margin:[0,0,0,12]});c.customize&&c.customize(d,c,b);b=(u||j.pdfMake).createPdf(d);"open"===c.download&&!I()?b.open():b.download(a.filename);this.processing(!1)},title:"*",filename:"*",extension:".pdf",exportOptions:{},orientation:"portrait",pageSize:"A4",header:!0,footer:!1,messageTop:"*",messageBottom:"*",customize:null,download:"download"};
-return o.Buttons});
+(function(i) {
+    "function" === typeof define && define.amd ? define(["jquery", "datatables.net", "datatables.net-buttons"], function(j) {
+        return i(j, window, document)
+    }) : "object" === typeof exports ? module.exports = function(j, l, v, u) {
+        j || (j = window);
+        if (!l || !l.fn.dataTable) l = require("datatables.net")(j, l).$;
+        l.fn.dataTable.Buttons || require("datatables.net-buttons")(j, l);
+        return i(l, j, j.document, v, u)
+    } : i(jQuery, window, document)
+})(function(i, j, l, v, u, s) {
+    function z(a) {
+        for (var b = ""; 0 <= a;) b = String.fromCharCode(a % 26 + 65) + b, a = Math.floor(a /
+            26) - 1;
+        return b
+    }
+
+    function A(a, b) {
+        w === s && (w = -1 === y.serializeToString(i.parseXML(B["xl/worksheets/sheet1.xml"])).indexOf("xmlns:r"));
+        i.each(b, function(d, c) {
+            if (i.isPlainObject(c)) {
+                var b = a.folder(d);
+                A(b, c)
+            } else {
+                if (w) {
+                    var b = c.childNodes[0],
+                        g, e, n = [];
+                    for (g = b.attributes.length - 1; 0 <= g; g--) {
+                        e = b.attributes[g].nodeName;
+                        var h = b.attributes[g].nodeValue; - 1 !== e.indexOf(":") && (n.push({
+                            name: e,
+                            value: h
+                        }), b.removeAttribute(e))
+                    }
+                    g = 0;
+                    for (e = n.length; g < e; g++) h = c.createAttribute(n[g].name.replace(":", "_dt_b_namespace_token_")),
+                        h.value = n[g].value, b.setAttributeNode(h)
+                }
+                b = y.serializeToString(c);
+                w && (-1 === b.indexOf("<?xml") && (b = '<?xml version="1.0" encoding="UTF-8" standalone="yes"?>' + b), b = b.replace(/_dt_b_namespace_token_/g, ":"));
+                b = b.replace(/<([^<>]*?) xmlns=""([^<>]*?)>/g, "<$1 $2>");
+                a.file(d, b)
+            }
+        })
+    }
+
+    function q(a, b, d) {
+        var c = a.createElement(b);
+        d && (d.attr && i(c).attr(d.attr), d.children && i.each(d.children, function(a, b) {
+            c.appendChild(b)
+        }), null !== d.text && d.text !== s && c.appendChild(a.createTextNode(d.text)));
+        return c
+    }
+
+    function K(a, b) {
+        var d =
+            a.header[b].length,
+            c;
+        a.footer && a.footer[b].length > d && (d = a.footer[b].length);
+        for (var f = 0, g = a.body.length; f < g; f++)
+            if (c = a.body[f][b], c = null !== c && c !== s ? c.toString() : "", -1 !== c.indexOf("\n") ? (c = c.split("\n"), c.sort(function(a, c) {
+                    return c.length - a.length
+                }), c = c[0].length) : c = c.length, c > d && (d = c), 40 < d) return 52;
+        d *= 1.3;
+        return 6 < d ? d : 6
+    }
+    var o = i.fn.dataTable,
+        t;
+    var h = "undefined" !== typeof self && self || "undefined" !== typeof j && j || this.content;
+    if ("undefined" === typeof h || "undefined" !== typeof navigator && /MSIE [1-9]\./.test(navigator.userAgent)) t =
+        void 0;
+    else {
+        var x = h.document.createElementNS("http://www.w3.org/1999/xhtml", "a"),
+            L = "download" in x,
+            M = /constructor/i.test(h.HTMLElement) || h.safari,
+            C = /CriOS\/[\d]+/.test(navigator.userAgent),
+            N = function(a) {
+                (h.setImmediate || h.setTimeout)(function() {
+                    throw a;
+                }, 0)
+            },
+            D = function(a) {
+                setTimeout(function() {
+                    "string" === typeof a ? (h.URL || h.webkitURL || h).revokeObjectURL(a) : a.remove()
+                }, 4E4)
+            },
+            E = function(a) {
+                return /^\s*(?:text\/\S*|application\/xml|\S*\/\S*\+xml)\s*;.*charset\s*=\s*utf-8/i.test(a.type) ? new Blob([String.fromCharCode(65279),
+                    a
+                ], {
+                    type: a.type
+                }) : a
+            },
+            F = function(a, b, d) {
+                d || (a = E(a));
+                var c = this,
+                    d = "application/octet-stream" === a.type,
+                    f, g = function() {
+                        for (var a = ["writestart", "progress", "write", "writeend"], a = [].concat(a), b = a.length; b--;) {
+                            var d = c["on" + a[b]];
+                            if ("function" === typeof d) try {
+                                d.call(c, c)
+                            } catch (e) {
+                                N(e)
+                            }
+                        }
+                    };
+                c.readyState = c.INIT;
+                if (L) f = (h.URL || h.webkitURL || h).createObjectURL(a), setTimeout(function() {
+                    x.href = f;
+                    x.download = b;
+                    var a = new MouseEvent("click");
+                    x.dispatchEvent(a);
+                    g();
+                    D(f);
+                    c.readyState = c.DONE
+                });
+                else if ((C || d && M) && h.FileReader) {
+                    var e =
+                        new FileReader;
+                    e.onloadend = function() {
+                        var a = C ? e.result : e.result.replace(/^data:[^;]*;/, "data:attachment/file;");
+                        h.open(a, "_blank") || (h.location.href = a);
+                        c.readyState = c.DONE;
+                        g()
+                    };
+                    e.readAsDataURL(a);
+                    c.readyState = c.INIT
+                } else f || (f = (h.URL || h.webkitURL || h).createObjectURL(a)), d ? h.location.href = f : h.open(f, "_blank") || (h.location.href = f), c.readyState = c.DONE, g(), D(f)
+            },
+            m = F.prototype;
+        "undefined" !== typeof navigator && navigator.msSaveOrOpenBlob ? t = function(a, b, d) {
+            b = b || a.name || "download";
+            d || (a = E(a));
+            return navigator.msSaveOrOpenBlob(a,
+                b)
+        } : (m.abort = function() {}, m.readyState = m.INIT = 0, m.WRITING = 1, m.DONE = 2, m.error = m.onwritestart = m.onprogress = m.onwrite = m.onabort = m.onerror = m.onwriteend = null, t = function(a, b, d) {
+            return new F(a, b || a.name || "download", d)
+        })
+    }
+    o.fileSave = t;
+    var O = function(a) {
+            var b = "Sheet1";
+            a.sheetName && (b = a.sheetName.replace(/[\[\]\*\/\\\?\:]/g, ""));
+            return b
+        },
+        G = function(a) {
+            return a.newline ? a.newline : navigator.userAgent.match(/Windows/) ? "\r\n" : "\n"
+        },
+        H = function(a, b) {
+            for (var d = G(b), c = a.buttons.exportData(b.exportOptions), f = b.fieldBoundary,
+                    g = b.fieldSeparator, e = RegExp(f, "g"), n = b.escapeChar !== s ? b.escapeChar : "\\", i = function(a) {
+                        for (var c = "", b = 0, d = a.length; b < d; b++) 0 < b && (c += g), c += f ? f + ("" + a[b]).replace(e, n + f) + f : a[b];
+                        return c
+                    }, h = b.header ? i(c.header) + d : "", j = b.footer && c.footer ? d + i(c.footer) : "", k = [], l = 0, m = c.body.length; l < m; l++) k.push(i(c.body[l]));
+            return {
+                str: h + k.join(d) + j,
+                rows: k.length
+            }
+        },
+        I = function() {
+            if (!(-1 !== navigator.userAgent.indexOf("Safari") && -1 === navigator.userAgent.indexOf("Chrome") && -1 === navigator.userAgent.indexOf("Opera"))) return !1;
+            var a = navigator.userAgent.match(/AppleWebKit\/(\d+\.\d+)/);
+            return a && 1 < a.length && 603.1 > 1 * a[1] ? !0 : !1
+        };
+    try {
+        var y = new XMLSerializer,
+            w
+    } catch (P) {}
+    var B = {
+            "_rels/.rels": '<?xml version="1.0" encoding="UTF-8" standalone="yes"?><Relationships xmlns="http://schemas.openxmlformats.org/package/2006/relationships"><Relationship Id="rId1" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/officeDocument" Target="xl/workbook.xml"/></Relationships>',
+            "xl/_rels/workbook.xml.rels": '<?xml version="1.0" encoding="UTF-8" standalone="yes"?><Relationships xmlns="http://schemas.openxmlformats.org/package/2006/relationships"><Relationship Id="rId1" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/worksheet" Target="worksheets/sheet1.xml"/><Relationship Id="rId2" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/styles" Target="styles.xml"/></Relationships>',
+            "[Content_Types].xml": '<?xml version="1.0" encoding="UTF-8" standalone="yes"?><Types xmlns="http://schemas.openxmlformats.org/package/2006/content-types"><Default Extension="xml" ContentType="application/xml" /><Default Extension="rels" ContentType="application/vnd.openxmlformats-package.relationships+xml" /><Default Extension="jpeg" ContentType="image/jpeg" /><Override PartName="/xl/workbook.xml" ContentType="application/vnd.openxmlformats-officedocument.spreadsheetml.sheet.main+xml" /><Override PartName="/xl/worksheets/sheet1.xml" ContentType="application/vnd.openxmlformats-officedocument.spreadsheetml.worksheet+xml" /><Override PartName="/xl/styles.xml" ContentType="application/vnd.openxmlformats-officedocument.spreadsheetml.styles+xml" /></Types>',
+            "xl/workbook.xml": '<?xml version="1.0" encoding="UTF-8" standalone="yes"?><workbook xmlns="http://schemas.openxmlformats.org/spreadsheetml/2006/main" xmlns:r="http://schemas.openxmlformats.org/officeDocument/2006/relationships"><fileVersion appName="xl" lastEdited="5" lowestEdited="5" rupBuild="24816"/><workbookPr showInkAnnotation="0" autoCompressPictures="0"/><bookViews><workbookView xWindow="0" yWindow="0" windowWidth="25600" windowHeight="19020" tabRatio="500"/></bookViews><sheets><sheet name="" sheetId="1" r:id="rId1"/></sheets></workbook>',
+            "xl/worksheets/sheet1.xml": '<?xml version="1.0" encoding="UTF-8" standalone="yes"?><worksheet xmlns="http://schemas.openxmlformats.org/spreadsheetml/2006/main" xmlns:r="http://schemas.openxmlformats.org/officeDocument/2006/relationships" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" mc:Ignorable="x14ac" xmlns:x14ac="http://schemas.microsoft.com/office/spreadsheetml/2009/9/ac"><sheetData/><mergeCells count="0"/></worksheet>',
+            "xl/styles.xml": '<?xml version="1.0" encoding="UTF-8"?><styleSheet xmlns="http://schemas.openxmlformats.org/spreadsheetml/2006/main" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" mc:Ignorable="x14ac" xmlns:x14ac="http://schemas.microsoft.com/office/spreadsheetml/2009/9/ac"><numFmts count="6"><numFmt numFmtId="164" formatCode="#,##0.00_- [$$-45C]"/><numFmt numFmtId="165" formatCode="&quot;£&quot;#,##0.00"/><numFmt numFmtId="166" formatCode="[$€-2] #,##0.00"/><numFmt numFmtId="167" formatCode="0.0%"/><numFmt numFmtId="168" formatCode="#,##0;(#,##0)"/><numFmt numFmtId="169" formatCode="#,##0.00;(#,##0.00)"/></numFmts><fonts count="5" x14ac:knownFonts="1"><font><sz val="11" /><name val="Calibri" /></font><font><sz val="11" /><name val="Calibri" /><color rgb="FFFFFFFF" /></font><font><sz val="11" /><name val="Calibri" /><b /></font><font><sz val="11" /><name val="Calibri" /><i /></font><font><sz val="11" /><name val="Calibri" /><u /></font></fonts><fills count="6"><fill><patternFill patternType="none" /></fill><fill><patternFill patternType="none" /></fill><fill><patternFill patternType="solid"><fgColor rgb="FFD9D9D9" /><bgColor indexed="64" /></patternFill></fill><fill><patternFill patternType="solid"><fgColor rgb="FFD99795" /><bgColor indexed="64" /></patternFill></fill><fill><patternFill patternType="solid"><fgColor rgb="ffc6efce" /><bgColor indexed="64" /></patternFill></fill><fill><patternFill patternType="solid"><fgColor rgb="ffc6cfef" /><bgColor indexed="64" /></patternFill></fill></fills><borders count="2"><border><left /><right /><top /><bottom /><diagonal /></border><border diagonalUp="false" diagonalDown="false"><left style="thin"><color auto="1" /></left><right style="thin"><color auto="1" /></right><top style="thin"><color auto="1" /></top><bottom style="thin"><color auto="1" /></bottom><diagonal /></border></borders><cellStyleXfs count="1"><xf numFmtId="0" fontId="0" fillId="0" borderId="0" /></cellStyleXfs><cellXfs count="67"><xf numFmtId="0" fontId="0" fillId="0" borderId="0" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="1" fillId="0" borderId="0" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="2" fillId="0" borderId="0" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="3" fillId="0" borderId="0" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="4" fillId="0" borderId="0" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="0" fillId="2" borderId="0" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="1" fillId="2" borderId="0" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="2" fillId="2" borderId="0" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="3" fillId="2" borderId="0" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="4" fillId="2" borderId="0" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="0" fillId="3" borderId="0" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="1" fillId="3" borderId="0" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="2" fillId="3" borderId="0" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="3" fillId="3" borderId="0" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="4" fillId="3" borderId="0" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="0" fillId="4" borderId="0" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="1" fillId="4" borderId="0" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="2" fillId="4" borderId="0" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="3" fillId="4" borderId="0" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="4" fillId="4" borderId="0" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="0" fillId="5" borderId="0" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="1" fillId="5" borderId="0" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="2" fillId="5" borderId="0" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="3" fillId="5" borderId="0" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="4" fillId="5" borderId="0" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="0" fillId="0" borderId="1" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="1" fillId="0" borderId="1" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="2" fillId="0" borderId="1" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="3" fillId="0" borderId="1" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="4" fillId="0" borderId="1" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="0" fillId="2" borderId="1" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="1" fillId="2" borderId="1" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="2" fillId="2" borderId="1" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="3" fillId="2" borderId="1" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="4" fillId="2" borderId="1" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="0" fillId="3" borderId="1" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="1" fillId="3" borderId="1" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="2" fillId="3" borderId="1" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="3" fillId="3" borderId="1" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="4" fillId="3" borderId="1" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="0" fillId="4" borderId="1" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="1" fillId="4" borderId="1" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="2" fillId="4" borderId="1" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="3" fillId="4" borderId="1" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="4" fillId="4" borderId="1" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="0" fillId="5" borderId="1" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="1" fillId="5" borderId="1" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="2" fillId="5" borderId="1" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="3" fillId="5" borderId="1" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="4" fillId="5" borderId="1" applyFont="1" applyFill="1" applyBorder="1"/><xf numFmtId="0" fontId="0" fillId="0" borderId="0" applyFont="1" applyFill="1" applyBorder="1" xfId="0" applyAlignment="1"><alignment horizontal="left"/></xf><xf numFmtId="0" fontId="0" fillId="0" borderId="0" applyFont="1" applyFill="1" applyBorder="1" xfId="0" applyAlignment="1"><alignment horizontal="center"/></xf><xf numFmtId="0" fontId="0" fillId="0" borderId="0" applyFont="1" applyFill="1" applyBorder="1" xfId="0" applyAlignment="1"><alignment horizontal="right"/></xf><xf numFmtId="0" fontId="0" fillId="0" borderId="0" applyFont="1" applyFill="1" applyBorder="1" xfId="0" applyAlignment="1"><alignment horizontal="fill"/></xf><xf numFmtId="0" fontId="0" fillId="0" borderId="0" applyFont="1" applyFill="1" applyBorder="1" xfId="0" applyAlignment="1"><alignment textRotation="90"/></xf><xf numFmtId="0" fontId="0" fillId="0" borderId="0" applyFont="1" applyFill="1" applyBorder="1" xfId="0" applyAlignment="1"><alignment wrapText="1"/></xf><xf numFmtId="9"   fontId="0" fillId="0" borderId="0" applyFont="1" applyFill="1" applyBorder="1" xfId="0" applyNumberFormat="1"/><xf numFmtId="164" fontId="0" fillId="0" borderId="0" applyFont="1" applyFill="1" applyBorder="1" xfId="0" applyNumberFormat="1"/><xf numFmtId="165" fontId="0" fillId="0" borderId="0" applyFont="1" applyFill="1" applyBorder="1" xfId="0" applyNumberFormat="1"/><xf numFmtId="166" fontId="0" fillId="0" borderId="0" applyFont="1" applyFill="1" applyBorder="1" xfId="0" applyNumberFormat="1"/><xf numFmtId="167" fontId="0" fillId="0" borderId="0" applyFont="1" applyFill="1" applyBorder="1" xfId="0" applyNumberFormat="1"/><xf numFmtId="168" fontId="0" fillId="0" borderId="0" applyFont="1" applyFill="1" applyBorder="1" xfId="0" applyNumberFormat="1"/><xf numFmtId="169" fontId="0" fillId="0" borderId="0" applyFont="1" applyFill="1" applyBorder="1" xfId="0" applyNumberFormat="1"/><xf numFmtId="3" fontId="0" fillId="0" borderId="0" applyFont="1" applyFill="1" applyBorder="1" xfId="0" applyNumberFormat="1"/><xf numFmtId="4" fontId="0" fillId="0" borderId="0" applyFont="1" applyFill="1" applyBorder="1" xfId="0" applyNumberFormat="1"/><xf numFmtId="1" fontId="0" fillId="0" borderId="0" applyFont="1" applyFill="1" applyBorder="1" xfId="0" applyNumberFormat="1"/><xf numFmtId="2" fontId="0" fillId="0" borderId="0" applyFont="1" applyFill="1" applyBorder="1" xfId="0" applyNumberFormat="1"/></cellXfs><cellStyles count="1"><cellStyle name="Normal" xfId="0" builtinId="0" /></cellStyles><dxfs count="0" /><tableStyles count="0" defaultTableStyle="TableStyleMedium9" defaultPivotStyle="PivotStyleMedium4" /></styleSheet>'
+        },
+        J = [{
+            match: /^\-?\d+\.\d%$/,
+            style: 60,
+            fmt: function(a) {
+                return a / 100
+            }
+        }, {
+            match: /^\-?\d+\.?\d*%$/,
+            style: 56,
+            fmt: function(a) {
+                return a / 100
+            }
+        }, {
+            match: /^\-?\$[\d,]+.?\d*$/,
+            style: 57
+        }, {
+            match: /^\-?£[\d,]+.?\d*$/,
+            style: 58
+        }, {
+            match: /^\-?€[\d,]+.?\d*$/,
+            style: 59
+        }, {
+            match: /^\-?\d+$/,
+            style: 65
+        }, {
+            match: /^\-?\d+\.\d{2}$/,
+            style: 66
+        }, {
+            match: /^\([\d,]+\)$/,
+            style: 61,
+            fmt: function(a) {
+                return -1 * a.replace(/[\(\)]/g, "")
+            }
+        }, {
+            match: /^\([\d,]+\.\d{2}\)$/,
+            style: 62,
+            fmt: function(a) {
+                return -1 * a.replace(/[\(\)]/g, "")
+            }
+        }, {
+            match: /^\-?[\d,]+$/,
+            style: 63
+        }, {
+            match: /^\-?[\d,]+\.\d{2}$/,
+            style: 64
+        }];
+    o.ext.buttons.copyHtml5 = {
+        className: "buttons-copy buttons-html5",
+        text: function(a) {
+            return a.i18n("buttons.copy", "Copy")
+        },
+        action: function(a, b, d, c) {
+            this.processing(!0);
+            var f = this,
+                a = H(b, c),
+                g = b.buttons.exportInfo(c),
+                e = G(c),
+                n = a.str,
+                d = i("<div/>").css({
+                    height: 1,
+                    width: 1,
+                    overflow: "hidden",
+                    position: "fixed",
+                    top: 0,
+                    left: 0
+                });
+            g.title && (n = g.title + e + e + n);
+            g.messageTop && (n = g.messageTop + e + e + n);
+            g.messageBottom && (n = n + e + e + g.messageBottom);
+            c.customize && (n = c.customize(n, c, b));
+            c = i("<textarea readonly/>").val(n).appendTo(d);
+            if (l.queryCommandSupported("copy")) {
+                d.appendTo(b.table().container());
+                c[0].focus();
+                c[0].select();
+                try {
+                    var h = l.execCommand("copy");
+                    d.remove();
+                    if (h) {
+                        b.buttons.info(b.i18n("buttons.copyTitle", "Copy to clipboard"), b.i18n("buttons.copySuccess", {
+                            1: "Copied one row to clipboard",
+                            _: "Copied %d rows to clipboard"
+                        }, a.rows), 2E3);
+                        this.processing(!1);
+                        return
+                    }
+                } catch (j) {}
+            }
+            h = i("<span>" + b.i18n("buttons.copyKeys", "Press <i>ctrl</i> or <i>⌘</i> + <i>C</i> to copy the table data<br>to your system clipboard.<br><br>To cancel, click this message or press escape.") +
+                "</span>").append(d);
+            b.buttons.info(b.i18n("buttons.copyTitle", "Copy to clipboard"), h, 0);
+            c[0].focus();
+            c[0].select();
+            var m = i(h).closest(".dt-button-info"),
+                k = function() {
+                    m.off("click.buttons-copy");
+                    i(l).off(".buttons-copy");
+                    b.buttons.info(!1)
+                };
+            m.on("click.buttons-copy", k);
+            i(l).on("keydown.buttons-copy", function(a) {
+                27 === a.keyCode && (k(), f.processing(!1))
+            }).on("copy.buttons-copy cut.buttons-copy", function() {
+                k();
+                f.processing(!1)
+            })
+        },
+        exportOptions: {},
+        fieldSeparator: "\t",
+        fieldBoundary: "",
+        header: !0,
+        footer: !1,
+        title: "*",
+        messageTop: "*",
+        messageBottom: "*"
+    };
+    o.ext.buttons.csvHtml5 = {
+        bom: !1,
+        className: "buttons-csv buttons-html5",
+        available: function() {
+            return j.FileReader !== s && j.Blob
+        },
+        text: function(a) {
+            return a.i18n("buttons.csv", "CSV")
+        },
+        action: function(a, b, d, c) {
+            this.processing(!0);
+            var a = H(b, c).str,
+                d = b.buttons.exportInfo(c),
+                f = c.charset;
+            c.customize && (a = c.customize(a, c, b));
+            !1 !== f ? (f || (f = l.characterSet || l.charset), f && (f = ";charset=" + f)) : f = "";
+            c.bom && (a = "" + a);
+            t(new Blob([a], {
+                type: "text/csv" + f
+            }), d.filename, !0);
+            this.processing(!1)
+        },
+        filename: "*",
+        extension: ".csv",
+        exportOptions: {},
+        fieldSeparator: ",",
+        fieldBoundary: '"',
+        escapeChar: '"',
+        charset: null,
+        header: !0,
+        footer: !1
+    };
+    o.ext.buttons.excelHtml5 = {
+        className: "buttons-excel buttons-html5",
+        available: function() {
+            return j.FileReader !== s && (v || j.JSZip) !== s && !I() && y
+        },
+        text: function(a) {
+            return a.i18n("buttons.excel", "Excel")
+        },
+        action: function(a, b, d, c) {
+            this.processing(!0);
+            var f = this,
+                g = 0,
+                a = function(a) {
+                    return i.parseXML(B[a])
+                },
+                e = a("xl/worksheets/sheet1.xml"),
+                h = e.getElementsByTagName("sheetData")[0],
+                a = {
+                    _rels: {
+                        ".rels": a("_rels/.rels")
+                    },
+                    xl: {
+                        _rels: {
+                            "workbook.xml.rels": a("xl/_rels/workbook.xml.rels")
+                        },
+                        "workbook.xml": a("xl/workbook.xml"),
+                        "styles.xml": a("xl/styles.xml"),
+                        worksheets: {
+                            "sheet1.xml": e
+                        }
+                    },
+                    "[Content_Types].xml": a("[Content_Types].xml")
+                },
+                d = b.buttons.exportData(c.exportOptions),
+                l, m, r = function(a) {
+                    l = g + 1;
+                    m = q(e, "row", {
+                        attr: {
+                            r: l
+                        }
+                    });
+                    for (var b = 0, d = a.length; b < d; b++) {
+                        var f = z(b) + "" + l,
+                            j = null;
+                        if (null === a[b] || a[b] === s || "" === a[b])
+                            if (!0 === c.createEmptyCells) a[b] = "";
+                            else continue;
+                        var k = a[b];
+                        a[b] = i.trim(a[b]);
+                        for (var o = 0, r = J.length; o < r; o++) {
+                            var p = J[o];
+                            if (a[b].match && !a[b].match(/^0\d+/) && a[b].match(p.match)) {
+                                j = a[b].replace(/[^\d\.\-]/g, "");
+                                p.fmt && (j = p.fmt(j));
+                                j = q(e, "c", {
+                                    attr: {
+                                        r: f,
+                                        s: p.style
+                                    },
+                                    children: [q(e, "v", {
+                                        text: j
+                                    })]
+                                });
+                                break
+                            }
+                        }
+                        j || ("number" === typeof a[b] || a[b].match && a[b].match(/^-?\d+(\.\d+)?$/) && !a[b].match(/^0\d+/) ? j = q(e, "c", {
+                            attr: {
+                                t: "n",
+                                r: f
+                            },
+                            children: [q(e, "v", {
+                                text: a[b]
+                            })]
+                        }) : (k = !k.replace ? k : k.replace(/[\x00-\x09\x0B\x0C\x0E-\x1F\x7F-\x9F]/g, ""), j = q(e, "c", {
+                            attr: {
+                                t: "inlineStr",
+                                r: f
+                            },
+                            children: {
+                                row: q(e,
+                                    "is", {
+                                        children: {
+                                            row: q(e, "t", {
+                                                text: k,
+                                                attr: {
+                                                    "xml:space": "preserve"
+                                                }
+                                            })
+                                        }
+                                    })
+                            }
+                        })));
+                        m.appendChild(j)
+                    }
+                    h.appendChild(m);
+                    g++
+                };
+            i("sheets sheet", a.xl["workbook.xml"]).attr("name", O(c));
+            c.customizeData && c.customizeData(d);
+            var k = function(a, b) {
+                    var c = i("mergeCells", e);
+                    c[0].appendChild(q(e, "mergeCell", {
+                        attr: {
+                            ref: "A" + a + ":" + z(b) + a
+                        }
+                    }));
+                    c.attr("count", parseFloat(c.attr("count")) + 1);
+                    i("row:eq(" + (a - 1) + ") c", e).attr("s", "51")
+                },
+                p = b.buttons.exportInfo(c);
+            p.title && (r([p.title], g), k(g, d.header.length - 1));
+            p.messageTop && (r([p.messageTop],
+                g), k(g, d.header.length - 1));
+            c.header && (r(d.header, g), i("row:last c", e).attr("s", "2"));
+            for (var o = 0, u = d.body.length; o < u; o++) r(d.body[o], g);
+            c.footer && d.footer && (r(d.footer, g), i("row:last c", e).attr("s", "2"));
+            p.messageBottom && (r([p.messageBottom], g), k(g, d.header.length - 1));
+            r = q(e, "cols");
+            i("worksheet", e).prepend(r);
+            k = 0;
+            for (o = d.header.length; k < o; k++) r.appendChild(q(e, "col", {
+                attr: {
+                    min: k + 1,
+                    max: k + 1,
+                    width: K(d, k),
+                    customWidth: 1
+                }
+            }));
+            c.customize && c.customize(a, c, b);
+            0 === i("mergeCells", e).children().length && i("mergeCells",
+                e).remove();
+            b = new(v || j.JSZip);
+            d = {
+                type: "blob",
+                mimeType: "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet"
+            };
+            A(b, a);
+            b.generateAsync ? b.generateAsync(d).then(function(a) {
+                t(a, p.filename);
+                f.processing(false)
+            }) : (t(b.generate(d), p.filename), this.processing(!1))
+        },
+        filename: "*",
+        extension: ".xlsx",
+        exportOptions: {},
+        header: !0,
+        footer: !1,
+        title: "*",
+        messageTop: "*",
+        messageBottom: "*",
+        createEmptyCells: !1
+    };
+    o.ext.buttons.pdfHtml5 = {
+        className: "buttons-pdf buttons-html5",
+        available: function() {
+            return j.FileReader !==
+                s && (u || j.pdfMake)
+        },
+        text: function(a) {
+            return a.i18n("buttons.pdf", "PDF")
+        },
+        action: function(a, b, d, c) {
+            this.processing(!0);
+            var d = b.buttons.exportData(c.exportOptions),
+                a = b.buttons.exportInfo(c),
+                f = [];
+            c.header && f.push(i.map(d.header, function(a) {
+                return {
+                    text: "string" === typeof a ? a : a + "",
+                    style: "tableHeader"
+                }
+            }));
+            for (var g = 0, e = d.body.length; g < e; g++) f.push(i.map(d.body[g], function(a) {
+                return {
+                    text: "string" === typeof a ? a : a + "",
+                    style: g % 2 ? "tableBodyEven" : "tableBodyOdd"
+                }
+            }));
+            c.footer && d.footer && f.push(i.map(d.footer, function(a) {
+                return {
+                    text: "string" ===
+                        typeof a ? a : a + "",
+                    style: "tableFooter"
+                }
+            }));
+            d = {
+                pageSize: c.pageSize,
+                pageOrientation: c.orientation,
+                content: [{
+                    table: {
+                        headerRows: 1,
+                        body: f
+                    },
+                    layout: "noBorders"
+                }],
+                styles: {
+                    tableHeader: {
+                        bold: !0,
+                        fontSize: 11,
+                        color: "white",
+                        fillColor: "#2d4154",
+                        alignment: "center"
+                    },
+                    tableBodyEven: {},
+                    tableBodyOdd: {
+                        fillColor: "#f3f3f3"
+                    },
+                    tableFooter: {
+                        bold: !0,
+                        fontSize: 11,
+                        color: "white",
+                        fillColor: "#2d4154"
+                    },
+                    title: {
+                        alignment: "center",
+                        fontSize: 15
+                    },
+                    message: {}
+                },
+                defaultStyle: {
+                    fontSize: 10
+                }
+            };
+            a.messageTop && d.content.unshift({
+                text: a.messageTop,
+                style: "message",
+                margin: [0, 0, 0, 12]
+            });
+            a.messageBottom && d.content.push({
+                text: a.messageBottom,
+                style: "message",
+                margin: [0, 0, 0, 12]
+            });
+            a.title && d.content.unshift({
+                text: a.title,
+                style: "title",
+                margin: [0, 0, 0, 12]
+            });
+            c.customize && c.customize(d, c, b);
+            b = (u || j.pdfMake).createPdf(d);
+            "open" === c.download && !I() ? b.open() : b.download(a.filename);
+            this.processing(!1)
+        },
+        title: "*",
+        filename: "*",
+        extension: ".pdf",
+        exportOptions: {},
+        orientation: "portrait",
+        pageSize: "A4",
+        header: !0,
+        footer: !1,
+        messageTop: "*",
+        messageBottom: "*",
+        customize: null,
+        download: "download"
+    };
+    return o.Buttons
+});
\ No newline at end of file

From ed15f2f9335cfe2b314091ac29980311fb0c2345 Mon Sep 17 00:00:00 2001
From: mtyszler <tyszler.jobs@gmail.com>
Date: Sat, 4 Jan 2020 20:52:12 +0100
Subject: [PATCH 03/12] According to rstudio#418, improve
 dataTables.buttons.min.js, mimicking with minor adjustments changes from
 https://github.com/chrisvwn/DT/blob/master/inst/htmlwidgets/lib/datatables-extensions/Buttons/js/dataTables.buttons.min.js,
 which is inpired by 
 https://datatables.net/forums/discussion/comment/106434/#Comment_106434

This prepares the dataTables.buttons.min.js to handle multiple row headers. Without further adjustments this change actually create problems for all output functions, which expect a single row header instead of an array.
---
 .../Buttons/js/dataTables.buttons.min.js      | 68 ++++++++++++++++++-
 1 file changed, 65 insertions(+), 3 deletions(-)

diff --git a/inst/htmlwidgets/lib/datatables-extensions/Buttons/js/dataTables.buttons.min.js b/inst/htmlwidgets/lib/datatables-extensions/Buttons/js/dataTables.buttons.min.js
index f873dfbe..4e47c0b8 100644
--- a/inst/htmlwidgets/lib/datatables-extensions/Buttons/js/dataTables.buttons.min.js
+++ b/inst/htmlwidgets/lib/datatables-extensions/Buttons/js/dataTables.buttons.min.js
@@ -342,6 +342,64 @@
         g(a);
         return c
     };
+
+/* ----- BEGIN added Code ----- */
+    getHeaders = function( dt ){
+        var thRows = dt.nTHead.rows;
+        var numRows = thRows.length;
+        var matrix = [];
+     
+        // Iterate over each row of the header and add information to matrix.
+        for ( var rowIdx = 0;  rowIdx < numRows;  rowIdx++ ) {
+            var $row = $(thRows[rowIdx]);
+     
+            // Iterate over actual columns specified in this row.
+            var $ths = $row.children("th");
+            for ( var colIdx = 0;  colIdx < $ths.length;  colIdx++ )
+            {
+                var $th = $($ths.get(colIdx));
+                var colspan = $th.attr("colspan") || 1;
+                var rowspan = $th.attr("rowspan") || 1;
+                var colCount = 0;
+              
+                // ----- add this cell's title to the matrix
+                if (matrix[rowIdx] === undefined) {
+                    matrix[rowIdx] = [];  // create array for this row
+                }
+                // find 1st empty cell
+                for ( var j = 0;  j < (matrix[rowIdx]).length;  j++, colCount++ ) {
+                    if ( matrix[rowIdx][j] === "PLACEHOLDER" ) {
+                        break;
+                    }
+                }
+                var myColCount = colCount;
+                matrix[rowIdx][colCount++] = $th.text();
+             
+                // ----- If title cell has colspan, add empty titles for extra cell width.
+                for ( var j = 1;  j < colspan;  j++ ) {
+                    matrix[rowIdx][colCount++] = "";
+                }
+              
+                // ----- If title cell has rowspan, add empty titles for extra cell height.
+                for ( var i = 1;  i < rowspan;  i++ ) {
+                    var thisRow = rowIdx+i;
+                    if ( matrix[thisRow] === undefined ) {
+                        matrix[thisRow] = [];
+                    }
+                    // First add placeholder text for any previous columns.                
+                    for ( var j = (matrix[thisRow]).length;  j < myColCount;  j++ ) {
+                        matrix[thisRow][j] = "PLACEHOLDER";
+                    }
+                    for ( var j = 0;  j < colspan;  j++ ) {  // and empty for my columns
+                        matrix[thisRow][myColCount+j] = "";
+                    }
+                }
+            }
+        }
+        return matrix;
+    };
+    /*END added code*/
+
     l.buttonSelector = function(a, b) {
         for (var c = [], e = function(a, b, c) {
                 for (var d, g, f = 0, h = b.length; f < h; f++)
@@ -698,10 +756,14 @@
                     c.decodeEntities && (v.innerHTML = a, a = v.value);
                     return a
                 },
-                a = b.columns(c.columns).indexes().map(function(a) {
+                /*BEGIN ADD*/
+                /*a = b.columns(c.columns).indexes().map(function(a) {
                     var d = b.column(a).header();
                     return c.format.header(d.innerHTML, a, d)
                 }).toArray(),
+                */
+                headerMatrix = getHeaders( b.settings()[0] ),
+                /*END ADD*/
                 g = b.table().footer() ? b.columns(c.columns).indexes().map(function(a) {
                     var d =
                         b.column(a).footer();
@@ -713,12 +775,12 @@
             }, h)).any() && d.extend(h, {
                 selected: !0
             });
-            for (var h = b.rows(c.rows, h).indexes().toArray(), f = b.cells(h, c.columns), h = f.render(c.orthogonal).toArray(), f = f.nodes().toArray(), k = a.length, j = [], l = 0, n = 0, o = 0 < k ? h.length / k : 0; n < o; n++) {
+            for (var h = b.rows(c.rows, h).indexes().toArray(), f = b.cells(h, c.columns), h = f.render(c.orthogonal).toArray(), f = f.nodes().toArray(), k = /*a.length*/headerMatrix[headerMatrix.length - 1].length, j = [], l = 0, n = 0, o = 0 < k ? h.length / k : 0; n < o; n++) {
                 for (var r = [k], s = 0; s < k; s++) r[s] = c.format.body(h[l], n, s, f[l]), l++;
                 j[n] = r
             }
             a = {
-                header: a,
+                header: /*a*/headerMatrix,
                 footer: g,
                 body: j
             };

From ae44b9e4247974f7417858de07bd365271e336b8 Mon Sep 17 00:00:00 2001
From: mtyszler <tyszler.jobs@gmail.com>
Date: Sat, 4 Jan 2020 21:04:21 +0100
Subject: [PATCH 04/12] Building on commit
 ed15f2f9335cfe2b314091ac29980311fb0c2345, process the output functions for
 csvHtml5 and copyHtml5, allowing it to read multiple row headers

---
 .../datatables-extensions/Buttons/js/buttons.html5.min.js | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/inst/htmlwidgets/lib/datatables-extensions/Buttons/js/buttons.html5.min.js b/inst/htmlwidgets/lib/datatables-extensions/Buttons/js/buttons.html5.min.js
index 222bb320..5bf3f92a 100644
--- a/inst/htmlwidgets/lib/datatables-extensions/Buttons/js/buttons.html5.min.js
+++ b/inst/htmlwidgets/lib/datatables-extensions/Buttons/js/buttons.html5.min.js
@@ -152,6 +152,14 @@
                         for (var c = "", b = 0, d = a.length; b < d; b++) 0 < b && (c += g), c += f ? f + ("" + a[b]).replace(e, n + f) + f : a[b];
                         return c
                     }, h = b.header ? i(c.header) + d : "", j = b.footer && c.footer ? d + i(c.footer) : "", k = [], l = 0, m = c.body.length; l < m; l++) k.push(i(c.body[l]));
+            
+            /* ----- BEGIN added Code ----- */
+    		if (b.header) {
+    			for (h = [], l = 0, m = c.header.length; l < m; l++) h.push(i(c.header[l]));
+    			h = h.join(d) + d;
+			}
+			/*END added code*/
+            
             return {
                 str: h + k.join(d) + j,
                 rows: k.length

From 35a7e34eb55304b94b6ab0e0acacbf097c3756a6 Mon Sep 17 00:00:00 2001
From: mtyszler <tyszler.jobs@gmail.com>
Date: Sat, 4 Jan 2020 21:04:35 +0100
Subject: [PATCH 05/12] unminify code to improve readabilitty

---
 .../Buttons/js/buttons.print.min.js           | 82 +++++++++++++++++--
 1 file changed, 77 insertions(+), 5 deletions(-)

diff --git a/inst/htmlwidgets/lib/datatables-extensions/Buttons/js/buttons.print.min.js b/inst/htmlwidgets/lib/datatables-extensions/Buttons/js/buttons.print.min.js
index 081f62ba..f0ee2a86 100644
--- a/inst/htmlwidgets/lib/datatables-extensions/Buttons/js/buttons.print.min.js
+++ b/inst/htmlwidgets/lib/datatables-extensions/Buttons/js/buttons.print.min.js
@@ -1,5 +1,77 @@
-(function(c){"function"===typeof define&&define.amd?define(["jquery","datatables.net","datatables.net-buttons"],function(f){return c(f,window,document)}):"object"===typeof exports?module.exports=function(f,b){f||(f=window);if(!b||!b.fn.dataTable)b=require("datatables.net")(f,b).$;b.fn.dataTable.Buttons||require("datatables.net-buttons")(f,b);return c(b,f,f.document)}:c(jQuery,window,document)})(function(c,f,b,n){var i=c.fn.dataTable,e=b.createElement("a"),m=function(a){e.href=a;a=e.host;-1===a.indexOf("/")&&
-0!==e.pathname.indexOf("/")&&(a+="/");return e.protocol+"//"+a+e.pathname+e.search};i.ext.buttons.print={className:"buttons-print",text:function(a){return a.i18n("buttons.print","Print")},action:function(a,b,e,h){var a=b.buttons.exportData(c.extend({decodeEntities:!1},h.exportOptions)),e=b.buttons.exportInfo(h),i=c.map(b.settings()[0].aoColumns,function(b){return b.sClass}),k=function(b,a){for(var d="<tr>",c=0,e=b.length;c<e;c++)d+="<"+a+" "+(i[c]?'class="'+i[c]+'"':"")+">"+(null===b[c]||b[c]===n?
-"":b[c])+"</"+a+">";return d+"</tr>"},d='<table class="'+b.table().node().className+'">';h.header&&(d+="<thead>"+k(a.header,"th")+"</thead>");for(var d=d+"<tbody>",l=0,o=a.body.length;l<o;l++)d+=k(a.body[l],"td");d+="</tbody>";h.footer&&a.footer&&(d+="<tfoot>"+k(a.footer,"th")+"</tfoot>");var d=d+"</table>",g=f.open("","");g.document.close();var j="<title>"+e.title+"</title>";c("style, link").each(function(){var b=j,a=c(this).clone()[0];"link"===a.nodeName.toLowerCase()&&(a.href=m(a.href));j=b+a.outerHTML});
-try{g.document.head.innerHTML=j}catch(p){c(g.document.head).html(j)}g.document.body.innerHTML="<h1>"+e.title+"</h1><div>"+(e.messageTop||"")+"</div>"+d+"<div>"+(e.messageBottom||"")+"</div>";c(g.document.body).addClass("dt-print-view");c("img",g.document.body).each(function(b,a){a.setAttribute("src",m(a.getAttribute("src")))});h.customize&&h.customize(g,h,b);g.setTimeout(function(){h.autoPrint&&(g.print(),g.close())},1E3)},title:"*",messageTop:"*",messageBottom:"*",exportOptions:{},header:!0,footer:!1,
-autoPrint:!0,customize:null};return i.Buttons});
+(function(c) {
+    "function" === typeof define && define.amd ? define(["jquery", "datatables.net", "datatables.net-buttons"], function(f) {
+        return c(f, window, document)
+    }) : "object" === typeof exports ? module.exports = function(f, b) {
+        f || (f = window);
+        if (!b || !b.fn.dataTable) b = require("datatables.net")(f, b).$;
+        b.fn.dataTable.Buttons || require("datatables.net-buttons")(f, b);
+        return c(b, f, f.document)
+    } : c(jQuery, window, document)
+})(function(c, f, b, n) {
+    var i = c.fn.dataTable,
+        e = b.createElement("a"),
+        m = function(a) {
+            e.href = a;
+            a = e.host; - 1 === a.indexOf("/") &&
+                0 !== e.pathname.indexOf("/") && (a += "/");
+            return e.protocol + "//" + a + e.pathname + e.search
+        };
+    i.ext.buttons.print = {
+        className: "buttons-print",
+        text: function(a) {
+            return a.i18n("buttons.print", "Print")
+        },
+        action: function(a, b, e, h) {
+            var a = b.buttons.exportData(c.extend({
+                    decodeEntities: !1
+                }, h.exportOptions)),
+                e = b.buttons.exportInfo(h),
+                i = c.map(b.settings()[0].aoColumns, function(b) {
+                    return b.sClass
+                }),
+                k = function(b, a) {
+                    for (var d = "<tr>", c = 0, e = b.length; c < e; c++) d += "<" + a + " " + (i[c] ? 'class="' + i[c] + '"' : "") + ">" + (null === b[c] || b[c] === n ?
+                        "" : b[c]) + "</" + a + ">";
+                    return d + "</tr>"
+                },
+                d = '<table class="' + b.table().node().className + '">';
+            h.header && (d += "<thead>" + k(a.header, "th") + "</thead>");
+            for (var d = d + "<tbody>", l = 0, o = a.body.length; l < o; l++) d += k(a.body[l], "td");
+            d += "</tbody>";
+            h.footer && a.footer && (d += "<tfoot>" + k(a.footer, "th") + "</tfoot>");
+            var d = d + "</table>",
+                g = f.open("", "");
+            g.document.close();
+            var j = "<title>" + e.title + "</title>";
+            c("style, link").each(function() {
+                var b = j,
+                    a = c(this).clone()[0];
+                "link" === a.nodeName.toLowerCase() && (a.href = m(a.href));
+                j = b + a.outerHTML
+            });
+            try {
+                g.document.head.innerHTML = j
+            } catch (p) {
+                c(g.document.head).html(j)
+            }
+            g.document.body.innerHTML = "<h1>" + e.title + "</h1><div>" + (e.messageTop || "") + "</div>" + d + "<div>" + (e.messageBottom || "") + "</div>";
+            c(g.document.body).addClass("dt-print-view");
+            c("img", g.document.body).each(function(b, a) {
+                a.setAttribute("src", m(a.getAttribute("src")))
+            });
+            h.customize && h.customize(g, h, b);
+            g.setTimeout(function() {
+                h.autoPrint && (g.print(), g.close())
+            }, 1E3)
+        },
+        title: "*",
+        messageTop: "*",
+        messageBottom: "*",
+        exportOptions: {},
+        header: !0,
+        footer: !1,
+        autoPrint: !0,
+        customize: null
+    };
+    return i.Buttons
+});

From 8e9357c621a9638278cf940b296157043b8fbb91 Mon Sep 17 00:00:00 2001
From: mtyszler <tyszler.jobs@gmail.com>
Date: Sat, 4 Jan 2020 21:15:48 +0100
Subject: [PATCH 06/12] According to rstudio#418, improve buttons.print.min.js,
 with minor adjustments to what is suggested. This alloes the output function
 'Print' to handle multiple row headers

---
 .../datatables-extensions/Buttons/js/buttons.print.min.js  | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/inst/htmlwidgets/lib/datatables-extensions/Buttons/js/buttons.print.min.js b/inst/htmlwidgets/lib/datatables-extensions/Buttons/js/buttons.print.min.js
index f0ee2a86..9141e251 100644
--- a/inst/htmlwidgets/lib/datatables-extensions/Buttons/js/buttons.print.min.js
+++ b/inst/htmlwidgets/lib/datatables-extensions/Buttons/js/buttons.print.min.js
@@ -35,7 +35,12 @@
                     return d + "</tr>"
                 },
                 d = '<table class="' + b.table().node().className + '">';
-            h.header && (d += "<thead>" + k(a.header, "th") + "</thead>");
+            /*BEGIN ADD*/
+            //h.header && (d += "<thead>" + k(a.header, "th") + "</thead>");
+    		if(h.header) {
+	        	for(i = 0; i < a.header.length; i++) (d += "<thead>" + k(a.header[i], "th") + "</thead>");
+    		}
+    		/*END ADD*/
             for (var d = d + "<tbody>", l = 0, o = a.body.length; l < o; l++) d += k(a.body[l], "td");
             d += "</tbody>";
             h.footer && a.footer && (d += "<tfoot>" + k(a.footer, "th") + "</tfoot>");

From bfa1548a25ef7cfdd9e3e97b265b2172e4fa5f2d Mon Sep 17 00:00:00 2001
From: mtyszler <tyszler.jobs@gmail.com>
Date: Sat, 4 Jan 2020 21:30:24 +0100
Subject: [PATCH 07/12] According to rstudio#418, improve buttons.html5.min.js.
 This builds on commit ed15f2f9335cfe2b314091ac29980311fb0c2345 allowing the
 outputfunction pdfHtml5 to print pdf with multi-row headers

---
 .../Buttons/js/buttons.html5.min.js                | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/inst/htmlwidgets/lib/datatables-extensions/Buttons/js/buttons.html5.min.js b/inst/htmlwidgets/lib/datatables-extensions/Buttons/js/buttons.html5.min.js
index 5bf3f92a..4e9a4498 100644
--- a/inst/htmlwidgets/lib/datatables-extensions/Buttons/js/buttons.html5.min.js
+++ b/inst/htmlwidgets/lib/datatables-extensions/Buttons/js/buttons.html5.min.js
@@ -497,12 +497,24 @@
             var d = b.buttons.exportData(c.exportOptions),
                 a = b.buttons.exportInfo(c),
                 f = [];
-            c.header && f.push(i.map(d.header, function(a) {
+            /* ----- BEGIN added Code ----- */
+            /*c.header && f.push(i.map(d.header, function(a) {
                 return {
                     text: "string" === typeof a ? a : a + "",
                     style: "tableHeader"
                 }
             }));
+            */
+            if(c.header){
+	            for(g = 0; g < d.header.length; g++)
+		            f.push(i.map(d.header[g], function(a) {
+		                return {
+		                    text:  "string" ===  typeof a ? a : a + "",
+		                    style: "tableHeader"
+		                }
+		            }));
+	    	}
+	    	/*END added code*/
             for (var g = 0, e = d.body.length; g < e; g++) f.push(i.map(d.body[g], function(a) {
                 return {
                     text: "string" === typeof a ? a : a + "",

From 6b56d58521aeabb62f060fd3a2780f361dfc5b2f Mon Sep 17 00:00:00 2001
From: mtyszler <tyszler.jobs@gmail.com>
Date: Sat, 4 Jan 2020 21:41:33 +0100
Subject: [PATCH 08/12] According to rstudio#418, improve buttons.html5.min.js.
 This builds on commit ed15f2f9335cfe2b314091ac29980311fb0c2345 improves the
 outputfunction excelHtml5 to export excel files with multi-row headers,
 without the merges. On top of what is described  rstudio#418, it makes other
 modifications needed to match the latest rstudio/DT version.

---
 .../Buttons/js/buttons.html5.min.js           | 26 +++++++++++++------
 1 file changed, 18 insertions(+), 8 deletions(-)

diff --git a/inst/htmlwidgets/lib/datatables-extensions/Buttons/js/buttons.html5.min.js b/inst/htmlwidgets/lib/datatables-extensions/Buttons/js/buttons.html5.min.js
index 4e9a4498..fe89fcdf 100644
--- a/inst/htmlwidgets/lib/datatables-extensions/Buttons/js/buttons.html5.min.js
+++ b/inst/htmlwidgets/lib/datatables-extensions/Buttons/js/buttons.html5.min.js
@@ -52,9 +52,9 @@
     }
 
     function K(a, b) {
-        var d =
-            a.header[b].length,
-            c;
+        //var d = a.header[b].length        
+        for (var d = 0, o = 0; o<a.header.length; o++) d = Math.max(d, a.header[o][b].length); // gets the largest width of column b
+        var c;
         a.footer && a.footer[b].length > d && (d = a.footer[b].length);
         for (var f = 0, g = a.body.length; f < g; f++)
             if (c = a.body[f][b], c = null !== c && c !== s ? c.toString() : "", -1 !== c.indexOf("\n") ? (c = c.split("\n"), c.sort(function(a, c) {
@@ -441,17 +441,27 @@
                     i("row:eq(" + (a - 1) + ") c", e).attr("s", "51")
                 },
                 p = b.buttons.exportInfo(c);
-            p.title && (r([p.title], g), k(g, d.header.length - 1));
+            p.title && (r([p.title], g), k(g, /*d.header.length*/ d.header[d.header.length - 1].length - 1));
             p.messageTop && (r([p.messageTop],
-                g), k(g, d.header.length - 1));
-            c.header && (r(d.header, g), i("row:last c", e).attr("s", "2"));
+                g), k(g, /*d.header.length*/ d.header[d.header.length - 1].length - 1));
+            /* ----- BEGIN added Code ----- */
+            //c.header && (r(d.header, g), i("row:last c", e).attr("s", "2"));
+
+			if(c.header){
+				for (o = 0; o < d.header.length; o++){
+	                  r(d.header[o], g);
+	                  i("row:last c", e).attr("s", "2");
+	                }
+            }
+
+            /*END added code*/
             for (var o = 0, u = d.body.length; o < u; o++) r(d.body[o], g);
             c.footer && d.footer && (r(d.footer, g), i("row:last c", e).attr("s", "2"));
-            p.messageBottom && (r([p.messageBottom], g), k(g, d.header.length - 1));
+            p.messageBottom && (r([p.messageBottom], g), k(g, /*d.header.length*/d.header[d.header.length - 1].length - 1));
             r = q(e, "cols");
             i("worksheet", e).prepend(r);
             k = 0;
-            for (o = d.header.length; k < o; k++) r.appendChild(q(e, "col", {
+            for (o = /*d.header.length*/d.header[d.header.length - 1].length; k < o; k++) r.appendChild(q(e, "col", {
                 attr: {
                     min: k + 1,
                     max: k + 1,

From f7742c0f61731981ba216f952bcfe1f03fcb7daf Mon Sep 17 00:00:00 2001
From: mtyszler <tyszler.jobs@gmail.com>
Date: Sun, 5 Jan 2020 16:15:51 +0100
Subject: [PATCH 09/12] According to rstudio#418, improve buttons.html5.min.js.
 This builds on commit 6b56d58521aeabb62f060fd3a2780f361dfc5b2f and process
 the col/row span information to merge the cells at the excel output  via the
 function excelHtml5

---
 .../Buttons/js/buttons.html5.min.js           | 98 +++++++++++++++++++
 1 file changed, 98 insertions(+)

diff --git a/inst/htmlwidgets/lib/datatables-extensions/Buttons/js/buttons.html5.min.js b/inst/htmlwidgets/lib/datatables-extensions/Buttons/js/buttons.html5.min.js
index fe89fcdf..fbaacf44 100644
--- a/inst/htmlwidgets/lib/datatables-extensions/Buttons/js/buttons.html5.min.js
+++ b/inst/htmlwidgets/lib/datatables-extensions/Buttons/js/buttons.html5.min.js
@@ -444,16 +444,114 @@
             p.title && (r([p.title], g), k(g, /*d.header.length*/ d.header[d.header.length - 1].length - 1));
             p.messageTop && (r([p.messageTop],
                 g), k(g, /*d.header.length*/ d.header[d.header.length - 1].length - 1));
+
             /* ----- BEGIN added Code ----- */
             //c.header && (r(d.header, g), i("row:last c", e).attr("s", "2"));
 
 			if(c.header){
+				row_start_headers = g;
 				for (o = 0; o < d.header.length; o++){
 	                  r(d.header[o], g);
 	                  i("row:last c", e).attr("s", "2");
 	                }
             }
 
+            // process merged cells:
+            var mgCnt = 0;
+            var merges=[];
+            if (c.header) {
+                //for each header row
+                for(o=0; o < d.header.length; o++)
+                {
+                  //for each column (cell) in the row
+                  for(oj=0; oj<d.header[o].length; oj++)
+                  {
+                    //look for a non-colspan/rowspan cell
+                    if(d.header[o][oj] != "")
+                    {
+                      var startRow = o;
+                      var startCol = oj;
+                      var endRow = o;
+                      var endCol = oj;
+                                           
+                      //lookahead
+                      if(oj+1 < d.header[o].length){ 
+	                      if(d.header[o][oj+1] == "") //is the cell to the right a colspan?
+	                      { 
+	                        
+	                        startCol = oj;
+	                        endCol = oj+1;
+
+	                        //get to the last column in the colspan
+	                        while(endCol < d.header[o].length && d.header[o][endCol] == "")
+	                        {
+	                          endCol++;
+	                        }
+	                        endCol--;
+	                      }
+	                   }
+                      
+                      if(o+1 < d.header.length) {
+	                      if(d.header[o+1][oj] == "") //is the cell below a rowspan?
+	                      {  
+	                        
+	                        startRow = o;
+	                        endRow = o+1;
+
+	                        //get to the last row in the rowspan
+	                        while(endRow < d.header.length && d.header[endRow][oj] == "")
+	                        {
+	                          endRow++;
+	                        }
+	                      }
+	                  }
+                      
+                      //create and store merge ranges
+                      //if endCol or endRow show movement
+                      if(startRow != endRow || startCol != endCol)
+                      {
+                        sC = z(startCol); //convert startCol to excel column letter
+                        sR = startRow+1+row_start_headers; // actual row to be merged needs to take into account 0 index and current row (g)
+                        eC = z(endCol); //convert endCol to excel column letter
+                        eR = endRow+row_start_headers; // actual row to be merged needs to take into account 0 index and current row (g)
+                                                
+                        merges[mgCnt] = sC+""+sR; //start of range
+                        
+                        if(endCol > startCol){ //end column
+                          merges[mgCnt] = merges[mgCnt] + ":" + eC;
+                        } else {
+                          merges[mgCnt] = merges[mgCnt] + ":" + sC;
+                        }
+                        
+                        if(endRow > startRow) { //end row
+                          merges[mgCnt] = merges[mgCnt] + eR;
+                        } else {
+                          merges[mgCnt] = merges[mgCnt] + sR;
+                        }
+                                                
+                        mgCnt++; //increment number of merge ranges
+                      }
+                    }
+                  }
+                }               
+            }
+
+
+            if (mgCnt > 0) {
+              //add each merge range as a child
+              var oc = i("mergeCells", e);
+              for(o=0;o<mgCnt;o++)
+              {
+
+              	oc[0].appendChild(q(e, "mergeCell", {
+                        attr: {
+                            ref: merges[o]
+                        }
+                    }));
+              	oc.attr("count", parseFloat(oc.attr("count")) + 1);
+              }
+            }
+
             /*END added code*/
             for (var o = 0, u = d.body.length; o < u; o++) r(d.body[o], g);
             c.footer && d.footer && (r(d.footer, g), i("row:last c", e).attr("s", "2"));

From 890094de7ba4782d53a795eb595188c1eaed8060 Mon Sep 17 00:00:00 2001
From: mtyszler <tyszler.jobs@gmail.com>
Date: Mon, 6 Jan 2020 09:10:56 +0100
Subject: [PATCH 10/12] Addresses rstudio#418. This update refactors and
 improve the code introduced on ed15f2f9335cfe2b314091ac29980311fb0c2345. Here
 the main improvements are:

* It includes all headers, including the ones which are hidden using colvis, for example. This if done via using aoHeader instead of nThead, and then using the cellIndex property instead of the colspan of the shown table on screen.
* After extracting a complete rawHeaderMatrix, it process it to remove hidden columns and format the content. (similar to the original single row header code)
---
 .../Buttons/js/dataTables.buttons.min.js      | 100 ++++++++++--------
 1 file changed, 55 insertions(+), 45 deletions(-)

diff --git a/inst/htmlwidgets/lib/datatables-extensions/Buttons/js/dataTables.buttons.min.js b/inst/htmlwidgets/lib/datatables-extensions/Buttons/js/dataTables.buttons.min.js
index 4e47c0b8..5968e7c6 100644
--- a/inst/htmlwidgets/lib/datatables-extensions/Buttons/js/dataTables.buttons.min.js
+++ b/inst/htmlwidgets/lib/datatables-extensions/Buttons/js/dataTables.buttons.min.js
@@ -345,55 +345,56 @@
 
 /* ----- BEGIN added Code ----- */
     getHeaders = function( dt ){
-        var thRows = dt.nTHead.rows;
+        var thRows = dt.aoHeader;
         var numRows = thRows.length;
+        var numCols = thRows[0].length;
         var matrix = [];
-     
+
+        //initialize matrix with "_getHeaders_initialized_" string
+        for ( var rowIdx = 0;  rowIdx < numRows;  rowIdx++ ) {
+        	matrix[rowIdx] = [];
+        	for ( var colIdx = 0;  colIdx < numCols;  colIdx++ ){
+        		matrix[rowIdx][colIdx] = "_getHeaders_initialized_"
+        	}
+        }
+
         // Iterate over each row of the header and add information to matrix.
         for ( var rowIdx = 0;  rowIdx < numRows;  rowIdx++ ) {
-            var $row = $(thRows[rowIdx]);
-     
-            // Iterate over actual columns specified in this row.
-            var $ths = $row.children("th");
-            for ( var colIdx = 0;  colIdx < $ths.length;  colIdx++ )
+            var $row = thRows[rowIdx];
+            
+            // Iterate over all columns specified in this row.
+            for ( var colIdx = 0;  colIdx < numCols;  colIdx++ )
             {
-                var $th = $($ths.get(colIdx));
+                var $th = $($row[colIdx].cell);
                 var colspan = $th.attr("colspan") || 1;
                 var rowspan = $th.attr("rowspan") || 1;
-                var colCount = 0;
-              
-                // ----- add this cell's title to the matrix
-                if (matrix[rowIdx] === undefined) {
-                    matrix[rowIdx] = [];  // create array for this row
-                }
-                // find 1st empty cell
-                for ( var j = 0;  j < (matrix[rowIdx]).length;  j++, colCount++ ) {
-                    if ( matrix[rowIdx][j] === "PLACEHOLDER" ) {
-                        break;
-                    }
-                }
-                var myColCount = colCount;
-                matrix[rowIdx][colCount++] = $th.text();
-             
-                // ----- If title cell has colspan, add empty titles for extra cell width.
-                for ( var j = 1;  j < colspan;  j++ ) {
-                    matrix[rowIdx][colCount++] = "";
-                }
-              
-                // ----- If title cell has rowspan, add empty titles for extra cell height.
-                for ( var i = 1;  i < rowspan;  i++ ) {
-                    var thisRow = rowIdx+i;
-                    if ( matrix[thisRow] === undefined ) {
-                        matrix[thisRow] = [];
-                    }
-                    // First add placeholder text for any previous columns.                
-                    for ( var j = (matrix[thisRow]).length;  j < myColCount;  j++ ) {
-                        matrix[thisRow][j] = "PLACEHOLDER";
-                    }
-                    for ( var j = 0;  j < colspan;  j++ ) {  // and empty for my columns
-                        matrix[thisRow][myColCount+j] = "";
-                    }
-                }
+                var cellIndex = $row[colIdx].cell.cellIndex;
+                
+                
+                // If the cell has been initialized but not changed, update
+              	if (matrix[rowIdx][colIdx]=="_getHeaders_initialized_") {
+
+              		matrix[rowIdx][colIdx] = $th.text();
+
+	              	// rowspan
+	              	for(var expand = 1; expand < rowspan; expand++){
+	              		matrix[rowIdx+expand][colIdx]="";
+	              		console.log("spanning to row")
+	              		console.log(rowIdx+expand);
+	              	}
+
+	              	// colspan, use cellindex instead. colspan will be incorrect for hidden columns (colVis), but cellIndex will correctly find them
+					expand = 1;
+					if (colIdx + expand < numCols) {
+		              	next_cellIndex = $row[colIdx+expand].cell.cellIndex;
+		              	while(cellIndex == next_cellIndex){
+		              		matrix[rowIdx][colIdx+expand]="";
+		              		expand++;
+		              		if (colIdx + expand >= numCols) break;
+		              		next_cellIndex = $row[colIdx+expand].cell.cellIndex;
+		              	}
+		            }
+              	} 	
             }
         }
         return matrix;
@@ -755,16 +756,25 @@
                     c.stripNewlines && (a = a.replace(/\n/g, " "));
                     c.decodeEntities && (v.innerHTML = a, a = v.value);
                     return a
-                },
+                };
                 /*BEGIN ADD*/
                 /*a = b.columns(c.columns).indexes().map(function(a) {
                     var d = b.column(a).header();
                     return c.format.header(d.innerHTML, a, d)
                 }).toArray(),
                 */
-                headerMatrix = getHeaders( b.settings()[0] ),
+                var rawHeaderMatrix = getHeaders( b.settings()[0] );
+			    var headerMatrix = [];
+			    var numRows = rawHeaderMatrix.length;
+		        for ( var rowIdx = 0;  rowIdx < numRows;  rowIdx++ ) {
+		        	var headerRow = b.columns(c.columns).indexes().map( function (a) {
+			             var $th = rawHeaderMatrix[rowIdx][a];
+			             return c.format.header($th, a, $th);
+			        } ).toArray();
+			       headerMatrix.push( headerRow );
+			    }
                 /*END ADD*/
-                g = b.table().footer() ? b.columns(c.columns).indexes().map(function(a) {
+                var g = b.table().footer() ? b.columns(c.columns).indexes().map(function(a) {
                     var d =
                         b.column(a).footer();
                     return c.format.footer(d ? d.innerHTML : "", a, d)

From 5380305d265a6c5f5a294599ab1a2d274f182ea8 Mon Sep 17 00:00:00 2001
From: mtyszler <tyszler.jobs@gmail.com>
Date: Sat, 25 Jan 2020 22:39:25 +0100
Subject: [PATCH 11/12] Remove unecessary log commands

---
 .../datatables-extensions/Buttons/js/dataTables.buttons.min.js  | 2 --
 1 file changed, 2 deletions(-)

diff --git a/inst/htmlwidgets/lib/datatables-extensions/Buttons/js/dataTables.buttons.min.js b/inst/htmlwidgets/lib/datatables-extensions/Buttons/js/dataTables.buttons.min.js
index 5968e7c6..00ed1b9c 100644
--- a/inst/htmlwidgets/lib/datatables-extensions/Buttons/js/dataTables.buttons.min.js
+++ b/inst/htmlwidgets/lib/datatables-extensions/Buttons/js/dataTables.buttons.min.js
@@ -379,8 +379,6 @@
 	              	// rowspan
 	              	for(var expand = 1; expand < rowspan; expand++){
 	              		matrix[rowIdx+expand][colIdx]="";
-	              		console.log("spanning to row")
-	              		console.log(rowIdx+expand);
 	              	}
 
 	              	// colspan, use cellindex instead. colspan will be incorrect for hidden columns (colVis), but cellIndex will correctly find them

From 6b16ce38684ab47df8036d032fec8ee191f219e4 Mon Sep 17 00:00:00 2001
From: mtyszler <tyszler.jobs@gmail.com>
Date: Mon, 27 Jan 2020 12:02:33 +0100
Subject: [PATCH 12/12] Improves commit
 890094de7ba4782d53a795eb595188c1eaed8060 fixing an issue that would happen
 when colvis is applied, and the cellIndex are all negative

---
 .../Buttons/js/dataTables.buttons.min.js      | 25 +++++++++++--------
 1 file changed, 15 insertions(+), 10 deletions(-)

diff --git a/inst/htmlwidgets/lib/datatables-extensions/Buttons/js/dataTables.buttons.min.js b/inst/htmlwidgets/lib/datatables-extensions/Buttons/js/dataTables.buttons.min.js
index 00ed1b9c..bd1053d8 100644
--- a/inst/htmlwidgets/lib/datatables-extensions/Buttons/js/dataTables.buttons.min.js
+++ b/inst/htmlwidgets/lib/datatables-extensions/Buttons/js/dataTables.buttons.min.js
@@ -366,6 +366,7 @@
             for ( var colIdx = 0;  colIdx < numCols;  colIdx++ )
             {
                 var $th = $($row[colIdx].cell);
+                var is_unique = $row[colIdx].unique;
                 var colspan = $th.attr("colspan") || 1;
                 var rowspan = $th.attr("rowspan") || 1;
                 var cellIndex = $row[colIdx].cell.cellIndex;
@@ -381,16 +382,20 @@
 	              		matrix[rowIdx+expand][colIdx]="";
 	              	}
 
-	              	// colspan, use cellindex instead. colspan will be incorrect for hidden columns (colVis), but cellIndex will correctly find them
-					expand = 1;
-					if (colIdx + expand < numCols) {
-		              	next_cellIndex = $row[colIdx+expand].cell.cellIndex;
-		              	while(cellIndex == next_cellIndex){
-		              		matrix[rowIdx][colIdx+expand]="";
-		              		expand++;
-		              		if (colIdx + expand >= numCols) break;
-		              		next_cellIndex = $row[colIdx+expand].cell.cellIndex;
-		              	}
+                  // colspan
+                  // colspan will be incorrect for hidden columns (colvis)
+                  // but cellIndex will correctly find them, in combination with unique
+  					expand = 1;
+                    if (!is_unique){
+    					if (colIdx + expand < numCols) {
+    		              	next_cellIndex = $row[colIdx+expand].cell.cellIndex;
+    		              	while(cellIndex == next_cellIndex){
+    		              		matrix[rowIdx][colIdx+expand]="";
+    		              		expand++;
+    		              		if (colIdx + expand >= numCols) break;
+    		              		next_cellIndex = $row[colIdx+expand].cell.cellIndex;
+    		              	}
+                        }
 		            }
               	} 	
             }