emersonmoretto/buttons.html5.js

## buttons.html5.js
/*!
 * HTML5 export buttons for Buttons and DataTables.
 * 2016 SpryMedia Ltd - datatables.net/license
 *
 * FileSaver.js (1.3.3) - MIT license
 * Copyright © 2016 Eli Grey - http://eligrey.com
 */

(function( factory ){
	if ( typeof define === 'function' && define.amd ) {
		// AMD
		define( ['jquery', 'datatables.net', 'datatables.net-buttons'], function ( $ ) {
			return factory( $, window, document );
		} );
	}
	else if ( typeof exports === 'object' ) {
		// CommonJS
		module.exports = function (root, $, jszip, pdfmake) {
			if ( ! root ) {
				root = window;
			}

			if ( ! $ || ! $.fn.dataTable ) {
				$ = require('datatables.net')(root, $).$;
			}

			if ( ! $.fn.dataTable.Buttons ) {
				require('datatables.net-buttons')(root, $);
			}

			return factory( $, root, root.document, jszip, pdfmake );
		};
	}
	else {
		// Browser
		factory( jQuery, window, document );
	}
}(function( $, window, document, jszip, pdfmake, undefined ) {
'use strict';
var DataTable = $.fn.dataTable;

// Allow the constructor to pass in JSZip and PDFMake from external requires.
// Otherwise, use globally defined variables, if they are available.
function _jsZip () {
	return jszip || window.JSZip;
}
function _pdfMake () {
	return pdfmake || window.pdfMake;
}

DataTable.Buttons.pdfMake = function (_) {
	if ( ! _ ) {
		return _pdfMake();
	}
	pdfmake = m_ake;
}

DataTable.Buttons.jszip = function (_) {
	if ( ! _ ) {
		return _jsZip();
	}
	jszip = _;
}


/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 * FileSaver.js dependency
 */

/*jslint bitwise: true, indent: 4, laxbreak: true, laxcomma: true, smarttabs: true, plusplus: true */

var _saveAs = (function(view) {
	"use strict";
	// IE <10 is explicitly unsupported
	if (typeof view === "undefined" || typeof navigator !== "undefined" && /MSIE [1-9]\./.test(navigator.userAgent)) {
		return;
	}
	var
		  doc = view.document
		  // only get URL when necessary in case Blob.js hasn't overridden it yet
		, get_URL = function() {
			return view.URL || view.webkitURL || view;
		}
		, save_link = doc.createElementNS("http://www.w3.org/1999/xhtml", "a")
		, can_use_save_link = "download" in save_link
		, click = function(node) {
			var event = new MouseEvent("click");
			node.dispatchEvent(event);
		}
		, is_safari = /constructor/i.test(view.HTMLElement) || view.safari
		, is_chrome_ios =/CriOS\/[\d]+/.test(navigator.userAgent)
		, throw_outside = function(ex) {
			(view.setImmediate || view.setTimeout)(function() {
				throw ex;
			}, 0);
		}
		, force_saveable_type = "application/octet-stream"
		// the Blob API is fundamentally broken as there is no "downloadfinished" event to subscribe to
		, arbitrary_revoke_timeout = 1000 * 40 // in ms
		, revoke = function(file) {
			var revoker = function() {
				if (typeof file === "string") { // file is an object URL
					get_URL().revokeObjectURL(file);
				} else { // file is a File
					file.remove();
				}
			};
			setTimeout(revoker, arbitrary_revoke_timeout);
		}
		, dispatch = function(filesaver, event_types, event) {
			event_types = [].concat(event_types);
			var i = event_types.length;
			while (i--) {
				var listener = filesaver["on" + event_types[i]];
				if (typeof listener === "function") {
					try {
						listener.call(filesaver, event || filesaver);
					} catch (ex) {
						throw_outside(ex);
					}
				}
			}
		}
		, auto_bom = function(blob) {
			// prepend BOM for UTF-8 XML and text/* types (including HTML)
			// note: your browser will automatically convert UTF-16 U+FEFF to EF BB BF
			if (/^\s*(?:text\/\S*|application\/xml|\S*\/\S*\+xml)\s*;.*charset\s*=\s*utf-8/i.test(blob.type)) {
				return new Blob([String.fromCharCode(0xFEFF), blob], {type: blob.type});
			}
			return blob;
		}
		, FileSaver = function(blob, name, no_auto_bom) {
			if (!no_auto_bom) {
				blob = auto_bom(blob);
			}
			// First try a.download, then web filesystem, then object URLs
			var
				  filesaver = this
				, type = blob.type
				, force = type === force_saveable_type
				, object_url
				, dispatch_all = function() {
					dispatch(filesaver, "writestart progress write writeend".split(" "));
				}
				// on any filesys errors revert to saving with object URLs
				, fs_error = function() {
					if ((is_chrome_ios || (force && is_safari)) && view.FileReader) {
						// Safari doesn't allow downloading of blob urls
						var reader = new FileReader();
						reader.onloadend = function() {
							var url = is_chrome_ios ? reader.result : reader.result.replace(/^data:[^;]*;/, 'data:attachment/file;');
							var popup = view.open(url, '_blank');
							if(!popup) view.location.href = url;
							url=undefined; // release reference before dispatching
							filesaver.readyState = filesaver.DONE;
							dispatch_all();
						};
						reader.readAsDataURL(blob);
						filesaver.readyState = filesaver.INIT;
						return;
					}
					// don't create more object URLs than needed
					if (!object_url) {
						object_url = get_URL().createObjectURL(blob);
					}
					if (force) {
						view.location.href = object_url;
					} else {
						var opened = view.open(object_url, "_blank");
						if (!opened) {
							// Apple does not allow window.open, see https://developer.apple.com/library/safari/documentation/Tools/Conceptual/SafariExtensionGuide/WorkingwithWindowsandTabs/WorkingwithWindowsandTabs.html
							view.location.href = object_url;
						}
					}
					filesaver.readyState = filesaver.DONE;
					dispatch_all();
					revoke(object_url);
				}
			;
			filesaver.readyState = filesaver.INIT;

			if (can_use_save_link) {
				object_url = get_URL().createObjectURL(blob);
				setTimeout(function() {
					save_link.href = object_url;
					save_link.download = name;
					click(save_link);
					dispatch_all();
					revoke(object_url);
					filesaver.readyState = filesaver.DONE;
				});
				return;
			}

			fs_error();
		}
		, FS_proto = FileSaver.prototype
		, saveAs = function(blob, name, no_auto_bom) {
			return new FileSaver(blob, name || blob.name || "download", no_auto_bom);
		}
	;
	// IE 10+ (native saveAs)
	if (typeof navigator !== "undefined" && navigator.msSaveOrOpenBlob) {
		return function(blob, name, no_auto_bom) {
			name = name || blob.name || "download";

			if (!no_auto_bom) {
				blob = auto_bom(blob);
			}
			return navigator.msSaveOrOpenBlob(blob, name);
		};
	}

	FS_proto.abort = function(){};
	FS_proto.readyState = FS_proto.INIT = 0;
	FS_proto.WRITING = 1;
	FS_proto.DONE = 2;

	FS_proto.error =
	FS_proto.onwritestart =
	FS_proto.onprogress =
	FS_proto.onwrite =
	FS_proto.onabort =
	FS_proto.onerror =
	FS_proto.onwriteend =
		null;

	return saveAs;
}(
	   typeof self !== "undefined" && self
	|| typeof window !== "undefined" && window
	|| this.content
));


// Expose file saver on the DataTables API. Can't attach to `DataTables.Buttons`
// since this file can be loaded before Button's core!
DataTable.fileSave = _saveAs;


/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 * Local (private) functions
 */

/**
 * Get the sheet name for Excel exports.
 *
 * @param {object}	config Button configuration
 */
var _sheetname = function ( config )
{
	var sheetName = 'Sheet1';

	if ( config.sheetName ) {
		sheetName = config.sheetName.replace(/[\[\]\*\/\\\?\:]/g, '');
	}

	return sheetName;
};

/**
 * Get the newline character(s)
 *
 * @param {object}	config Button configuration
 * @return {string}				Newline character
 */
var _newLine = function ( config )
{
	return config.newline ?
		config.newline :
		navigator.userAgent.match(/Windows/) ?
			'\r\n' :
			'\n';
};

/**
 * Combine the data from the `buttons.exportData` method into a string that
 * will be used in the export file.
 *
 * @param	{DataTable.Api} dt		 DataTables API instance
 * @param	{object}				config Button configuration
 * @return {object}							 The data to export
 */
var _exportData = function ( dt, config )
{
	var newLine = _newLine( config );
	var data = dt.buttons.exportData( config.exportOptions );
	var boundary = config.fieldBoundary;
	var separator = config.fieldSeparator;
	var reBoundary = new RegExp( boundary, 'g' );
	var escapeChar = config.escapeChar !== undefined ?
		config.escapeChar :
		'\\';
	var join = function ( a ) {
		var s = '';

		// If there is a field boundary, then we might need to escape it in
		// the source data
		for ( var i=0, ien=a.length ; i<ien ; i++ ) {
			if ( i > 0 ) {
				s += separator;
			}

			s += boundary ?
				boundary + ('' + a[i]).replace( reBoundary, escapeChar+boundary ) + boundary :
				a[i];
		}

		return s;
	};

	var header = config.header ? join( data.header )+newLine : '';
	var footer = config.footer && data.footer ? newLine+join( data.footer ) : '';
	var body = [];

	for ( var i=0, ien=data.body.length ; i<ien ; i++ ) {
		body.push( join( data.body[i] ) );
	}

	return {
		str: header + body.join( newLine ) + footer,
		rows: body.length
	};
};

/**
 * Older versions of Safari (prior to tech preview 18) don't support the
 * download option required.
 *
 * @return {Boolean} `true` if old Safari
 */
var _isDuffSafari = function ()
{
	var safari = navigator.userAgent.indexOf('Safari') !== -1 &&
		navigator.userAgent.indexOf('Chrome') === -1 &&
		navigator.userAgent.indexOf('Opera') === -1;

	if ( ! safari ) {
		return false;
	}

	var version = navigator.userAgent.match( /AppleWebKit\/(\d+\.\d+)/ );
	if ( version && version.length > 1 && version[1]*1 < 603.1 ) {
		return true;
	}

	return false;
};

/**
 * Convert from numeric position to letter for column names in Excel
 * @param  {int} n Column number
 * @return {string} Column letter(s) name
 */
function createCellPos( n ){
	var ordA = 'A'.charCodeAt(0);
	var ordZ = 'Z'.charCodeAt(0);
	var len = ordZ - ordA + 1;
	var s = "";

	while( n >= 0 ) {
		s = String.fromCharCode(n % len + ordA) + s;
		n = Math.floor(n / len) - 1;
	}

	return s;
}

try {
	var _serialiser = new XMLSerializer();
	var _ieExcel;
}
catch (t) {}

/**
 * Recursively add XML files from an object's structure to a ZIP file. This
 * allows the XSLX file to be easily defined with an object's structure matching
 * the files structure.
 *
 * @param {JSZip} zip ZIP package
 * @param {object} obj Object to add (recursive)
 */
function _addToZip( zip, obj ) {
	if ( _ieExcel === undefined ) {
		// Detect if we are dealing with IE's _awful_ serialiser by seeing if it
		// drop attributes
		_ieExcel = _serialiser
			.serializeToString(
				$.parseXML( excelStrings['xl/worksheets/sheet1.xml'] )
			)
			.indexOf( 'xmlns:r' ) === -1;
	}

	$.each( obj, function ( name, val ) {
		if ( $.isPlainObject( val ) ) {
			var newDir = zip.folder( name );
			_addToZip( newDir, val );
		}
		else {
			if ( _ieExcel ) {
				// IE's XML serialiser will drop some name space attributes from
				// from the root node, so we need to save them. Do this by
				// replacing the namespace nodes with a regular attribute that
				// we convert back when serialised. Edge does not have this
				// issue
				var worksheet = val.childNodes[0];
				var i, ien;
				var attrs = [];

				for ( i=worksheet.attributes.length-1 ; i>=0 ; i-- ) {
					var attrName = worksheet.attributes[i].nodeName;
					var attrValue = worksheet.attributes[i].nodeValue;

					if ( attrName.indexOf( ':' ) !== -1 ) {
						attrs.push( { name: attrName, value: attrValue } );

						worksheet.removeAttribute( attrName );
					}
				}

				for ( i=0, ien=attrs.length ; i<ien ; i++ ) {
					var attr = val.createAttribute( attrs[i].name.replace( ':', '_dt_b_namespace_token_' ) );
					attr.value = attrs[i].value;
					worksheet.setAttributeNode( attr );
				}
			}

			var str = _serialiser.serializeToString(val);

			// Fix IE's XML
			if ( _ieExcel ) {
				// IE doesn't include the XML declaration
				if ( str.indexOf( '<?xml' ) === -1 ) {
					str = '<?xml version="1.0" encoding="UTF-8" standalone="yes"?>'+str;
				}

				// Return namespace attributes to being as such
				str = str.replace( /_dt_b_namespace_token_/g, ':' );

				// Remove testing name space that IE puts into the space preserve attr
				str = str.replace( /xmlns:NS[\d]+="" NS[\d]+:/g, '' );
			}

			// Safari, IE and Edge will put empty name space attributes onto
			// various elements making them useless. This strips them out
			str = str.replace( /<([^<>]*?) xmlns=""([^<>]*?)>/g, '<$1 $2>' );

			zip.file( name, str );
		}
	} );
}

/**
 * Create an XML node and add any children, attributes, etc without needing to
 * be verbose in the DOM.
 *
 * @param  {object} doc      XML document
 * @param  {string} nodeName Node name
 * @param  {object} opts     Options - can be `attr` (attributes), `children`
 *   (child nodes) and `text` (text content)
 * @return {node}            Created node
 */
function _createNode( doc, nodeName, opts ) {
	var tempNode = doc.createElement( nodeName );

	if ( opts ) {
		if ( opts.attr ) {
			$(tempNode).attr( opts.attr );
		}

		if ( opts.children ) {
			$.each( opts.children, function ( key, value ) {
				tempNode.appendChild( value );
			} );
		}

		if ( opts.text !== null && opts.text !== undefined ) {
			tempNode.appendChild( doc.createTextNode( opts.text ) );
		}
	}

	return tempNode;
}

/**
 * Get the width for an Excel column based on the contents of that column
 * @param  {object} data Data for export
 * @param  {int}    col  Column index
 * @return {int}         Column width
 */
function _excelColWidth( data, col ) {
	var max = data.header[col].length;
	var len, lineSplit, str;

	if ( data.footer && data.footer[col].length > max ) {
		max = data.footer[col].length;
	}

	for ( var i=0, ien=data.body.length ; i<ien ; i++ ) {
		var point = data.body[i][col];
		str = point !== null && point !== undefined ?
			point.toString() :
			'';

		// If there is a newline character, workout the width of the column
		// based on the longest line in the string
		if ( str.indexOf('\n') !== -1 ) {
			lineSplit = str.split('\n');
			lineSplit.sort( function (a, b) {
				return b.length - a.length;
			} );

			len = lineSplit[0].length;
		}
		else {
			len = str.length;
		}

		if ( len > max ) {
			max = len;
		}

		// Max width rather than having potentially massive column widths
		if ( max > 40 ) {
			return 54; // 40 * 1.35
		}
	}

	max *= 1.35;

	// And a min width
	return max > 6 ? max : 6;
}

// Excel - Pre-defined strings to build a basic XLSX file
var excelStrings = {
	"_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="Sheet1" sheetId="1" r:id="rId1"/>'+
			'</sheets>'+
			'<definedNames/>'+
		'</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>'+ // Excel appears to use this as a dotted background regardless of values but
					'<patternFill patternType="none" />'+ // to be valid to the schema, use a patternFill
				'</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>'
};
// Note we could use 3 `for` loops for the styles, but when gzipped there is
// virtually no difference in size, since the above can be easily compressed

// Pattern matching for special number formats. Perhaps this should be exposed
// via an API in future?
// Ref: section 3.8.30 - built in formatters in open spreadsheet
//   https://www.ecma-international.org/news/TC45_current_work/Office%20Open%20XML%20Part%204%20-%20Markup%20Language%20Reference.pdf
var _excelSpecials = [
	{ match: /^\-?\d+\.\d%$/,       style: 60, fmt: function (d) { return d/100; } }, // Precent with d.p.
	{ match: /^\-?\d+\.?\d*%$/,     style: 56, fmt: function (d) { return d/100; } }, // Percent
	{ match: /^\-?\$[\d,]+.?\d*$/,  style: 57 }, // Dollars
	{ match: /^\-?£[\d,]+.?\d*$/,   style: 58 }, // Pounds
	{ match: /^\-?€[\d,]+.?\d*$/,   style: 59 }, // Euros
	{ match: /^\-?\d+$/,            style: 65 }, // Numbers without thousand separators
	{ match: /^\-?\d+\.\d{2}$/,     style: 66 }, // Numbers 2 d.p. without thousands separators
	{ match: /^\([\d,]+\)$/,        style: 61, fmt: function (d) { return -1 * d.replace(/[\(\)]/g, ''); } },  // Negative numbers indicated by brackets
	{ match: /^\([\d,]+\.\d{2}\)$/, style: 62, fmt: function (d) { return -1 * d.replace(/[\(\)]/g, ''); } },  // Negative numbers indicated by brackets - 2d.p.
	{ match: /^\-?[\d,]+$/,         style: 63 }, // Numbers with thousand separators
	{ match: /^\-?[\d,]+\.\d{2}$/,  style: 64 }  // Numbers with 2 d.p. and thousands separators
];


/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 * Buttons
 */

//
// Copy to clipboard
//
DataTable.ext.buttons.copyHtml5 = {
	className: 'buttons-copy buttons-html5',

	text: function ( dt ) {
		return dt.i18n( 'buttons.copy', 'Copy' );
	},

	action: function ( e, dt, button, config ) {
		this.processing( true );

		var that = this;
		var exportData = _exportData( dt, config );
		var info = dt.buttons.exportInfo( config );
		var newline = _newLine(config);
		var output = exportData.str;
		var hiddenDiv = $('<div/>')
			.css( {
				height: 1,
				width: 1,
				overflow: 'hidden',
				position: 'fixed',
				top: 0,
				left: 0
			} );

		if ( info.title ) {
			output = info.title + newline + newline + output;
		}

		if ( info.messageTop ) {
			output = info.messageTop + newline + newline + output;
		}

		if ( info.messageBottom ) {
			output = output + newline + newline + info.messageBottom;
		}

		if ( config.customize ) {
			output = config.customize( output, config, dt );
		}

		var textarea = $('<textarea readonly/>')
			.val( output )
			.appendTo( hiddenDiv );

		// For browsers that support the copy execCommand, try to use it
		if ( document.queryCommandSupported('copy') ) {
			hiddenDiv.appendTo( dt.table().container() );
			textarea[0].focus();
			textarea[0].select();

			try {
				var successful = document.execCommand( 'copy' );
				hiddenDiv.remove();

				if (successful) {
					dt.buttons.info(
						dt.i18n( 'buttons.copyTitle', 'Copy to clipboard' ),
						dt.i18n( 'buttons.copySuccess', {
							1: 'Copied one row to clipboard',
							_: 'Copied %d rows to clipboard'
						}, exportData.rows ),
						2000
					);

					this.processing( false );
					return;
				}
			}
			catch (t) {}
		}

		// Otherwise we show the text box and instruct the user to use it
		var message = $('<span>'+dt.i18n( 'buttons.copyKeys',
				'Press <i>ctrl</i> or <i>\u2318</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( hiddenDiv );

		dt.buttons.info( dt.i18n( 'buttons.copyTitle', 'Copy to clipboard' ), message, 0 );

		// Select the text so when the user activates their system clipboard
		// it will copy that text
		textarea[0].focus();
		textarea[0].select();

		// Event to hide the message when the user is done
		var container = $(message).closest('.dt-button-info');
		var close = function () {
			container.off( 'click.buttons-copy' );
			$(document).off( '.buttons-copy' );
			dt.buttons.info( false );
		};

		container.on( 'click.buttons-copy', close );
		$(document)
			.on( 'keydown.buttons-copy', function (e) {
				if ( e.keyCode === 27 ) { // esc
					close();
					that.processing( false );
				}
			} )
			.on( 'copy.buttons-copy cut.buttons-copy', function () {
				close();
				that.processing( false );
			} );
	},

	exportOptions: {},

	fieldSeparator: '\t',

	fieldBoundary: '',

	header: true,

	footer: false,

	title: '*',

	messageTop: '*',

	messageBottom: '*'
};

//
// CSV export
//
DataTable.ext.buttons.csvHtml5 = {
	bom: false,

	className: 'buttons-csv buttons-html5',

	available: function () {
		return window.FileReader !== undefined && window.Blob;
	},

	text: function ( dt ) {
		return dt.i18n( 'buttons.csv', 'CSV' );
	},

	action: function ( e, dt, button, config ) {
		this.processing( true );

		// Set the text
		var output = _exportData( dt, config ).str;
		var info = dt.buttons.exportInfo(config);
		var charset = config.charset;

		if ( config.customize ) {
			output = config.customize( output, config, dt );
		}

		if ( charset !== false ) {
			if ( ! charset ) {
				charset = document.characterSet || document.charset;
			}

			if ( charset ) {
				charset = ';charset='+charset;
			}
		}
		else {
			charset = '';
		}

		if ( config.bom ) {
			output = '\ufeff' + output;
		}

		_saveAs(
			new Blob( [output], {type: 'text/csv'+charset} ),
			info.filename,
			true
		);

		this.processing( false );
	},

	filename: '*',

	extension: '.csv',

	exportOptions: {},

	fieldSeparator: ',',

	fieldBoundary: '"',

	escapeChar: '"',

	charset: null,

	header: true,

	footer: false
};

//
// Excel (xlsx) export
//
DataTable.ext.buttons.excelHtml5 = {
	className: 'buttons-excel buttons-html5',

	available: function () {
		return window.FileReader !== undefined && _jsZip() !== undefined && ! _isDuffSafari() && _serialiser;
	},

	text: function ( dt ) {
		return dt.i18n( 'buttons.excel', 'Excel' );
	},

	action: function ( e, dt, button, config ) {
		this.processing( true );

		var that = this;
		var rowPos = 0;
		var dataStartRow, dataEndRow;
		var getXml = function ( type ) {
			var str = excelStrings[ type ];

			//str = str.replace( /xmlns:/g, 'xmlns_' ).replace( /mc:/g, 'mc_' );

			return $.parseXML( str );
		};
		var rels = getXml('xl/worksheets/sheet1.xml');
		var relsGet = rels.getElementsByTagName( "sheetData" )[0];

		var xlsx = {
			_rels: {
				".rels": getXml('_rels/.rels')
			},
			xl: {
				_rels: {
					"workbook.xml.rels": getXml('xl/_rels/workbook.xml.rels')
				},
				"workbook.xml": getXml('xl/workbook.xml'),
				"styles.xml": getXml('xl/styles.xml'),
				"worksheets": {
					"sheet1.xml": rels
				}

			},
			"[Content_Types].xml": getXml('[Content_Types].xml')
		};

		var data = dt.buttons.exportData( config.exportOptions );
		var currentRow, rowNode;
		var addRow = function ( row ) {
			currentRow = rowPos+1;
			rowNode = _createNode( rels, "row", { attr: {r:currentRow} } );

			for ( var i=0, ien=row.length ; i<ien ; i++ ) {
				// Concat both the Cell Columns as a letter and the Row of the cell.
				var cellId = createCellPos(i) + '' + currentRow;
				var cell = null;

				// For null, undefined of blank cell, continue so it doesn't create the _createNode
				if ( row[i] === null || row[i] === undefined || row[i] === '' ) {
					if ( config.createEmptyCells === true ) {
						row[i] = '';
					}
					else {
						continue;
					}
				}

				var originalContent = row[i];
				row[i] = $.trim( row[i] );

				// Special number formatting options
				for ( var j=0, jen=_excelSpecials.length ; j<jen ; j++ ) {
					var special = _excelSpecials[j];

					// TODO Need to provide the ability for the specials to say
					// if they are returning a string, since at the moment it is
					// assumed to be a number
					if ( row[i].match && ! row[i].match(/^0\d+/) && row[i].match( special.match ) ) {
						var val = row[i].replace(/[^\d\.\-]/g, '');

						if ( special.fmt ) {
							val = special.fmt( val );
						}

						cell = _createNode( rels, 'c', {
							attr: {
								r: cellId,
								s: special.style
							},
							children: [
								_createNode( rels, 'v', { text: val } )
							]
						} );

						break;
					}
				}

				if ( ! cell ) {
					if ( typeof row[i] === 'number' || (
						row[i].match &&
						row[i].match(/^-?\d+(\.\d+)?$/) &&
						! row[i].match(/^0\d+/) )
					) {
						// Detect numbers - don't match numbers with leading zeros
						// or a negative anywhere but the start
						cell = _createNode( rels, 'c', {
							attr: {
								t: 'n',
								r: cellId
							},
							children: [
								_createNode( rels, 'v', { text: row[i] } )
							]
						} );
					}
					else {
						// String output - replace non standard characters for text output
						var text = ! originalContent.replace ?
							originalContent :
							originalContent.replace(/[\x00-\x09\x0B\x0C\x0E-\x1F\x7F-\x9F]/g, '');

						cell = _createNode( rels, 'c', {
							attr: {
								t: 'inlineStr',
								r: cellId
							},
							children:{
								row: _createNode( rels, 'is', {
									children: {
										row: _createNode( rels, 't', {
											text: text,
											attr: {
												'xml:space': 'preserve'
											}
										} )
									}
								} )
							}
						} );
					}
				}

				rowNode.appendChild( cell );
			}

			relsGet.appendChild(rowNode);
			rowPos++;
		};

		if ( config.customizeData ) {
			config.customizeData( data );
		}

		var mergeCells = function ( row, colspan ) {
			var mergeCells = $('mergeCells', rels);

			mergeCells[0].appendChild( _createNode( rels, 'mergeCell', {
				attr: {
					ref: 'A'+row+':'+createCellPos(colspan)+row
				}
			} ) );
			mergeCells.attr( 'count', parseFloat(mergeCells.attr( 'count' ))+1 );
			$('row:eq('+(row-1)+') c', rels).attr( 's', '51' ); // centre
		};

		// Title and top messages
		var exportInfo = dt.buttons.exportInfo( config );
		if ( exportInfo.title ) {
			addRow( [exportInfo.title], rowPos );
			mergeCells( rowPos, data.header.length-1 );
		}

		if ( exportInfo.messageTop ) {
			addRow( [exportInfo.messageTop], rowPos );
			mergeCells( rowPos, data.header.length-1 );
		}


		// Table itself
		if ( config.header ) {

		    /* ----- BEGIN changed Code ----- */
            var headerMatrix = _fnGetHeaders(dt);
            for ( var rowIdx = 0;  rowIdx < headerMatrix.length;  rowIdx++ ) {
                addRow( headerMatrix[rowIdx], rowPos );
            }
            /* ----- OLD Code that is replaced: ----- */
            //addRow( data.header, rowPos );
            /* ----- END changed Code ----- */

			//addRow( data.header, rowPos );
			$('row:last c', rels).attr( 's', '2' ); // bold
		}

		dataStartRow = rowPos;

		for ( var n=0, ie=data.body.length ; n<ie ; n++ ) {
			addRow( data.body[n], rowPos );
		}

		dataEndRow = rowPos;

		if ( config.footer && data.footer ) {

			 /* ----- BEGIN changed Code ----- */
            var footerMatrix = _fnGetFooters(dt);
            for ( var rowIdx = 0;  rowIdx < footerMatrix.length;  rowIdx++ ) {
                addRow( footerMatrix[rowIdx], rowPos );
            }
            /* ----- OLD Code that is replaced: ----- */
            //addRow( data.footer, rowPos);
            /* ----- END changed Code ----- */


			$('row:last c', rels).attr( 's', '2' ); // bold
		}

		// Below the table
		if ( exportInfo.messageBottom ) {
			addRow( [exportInfo.messageBottom], rowPos );
			mergeCells( rowPos, data.header.length-1 );
		}

		// Set column widths
		var cols = _createNode( rels, 'cols' );
		$('worksheet', rels).prepend( cols );

		for ( var i=0, ien=data.header.length ; i<ien ; i++ ) {
			cols.appendChild( _createNode( rels, 'col', {
				attr: {
					min: i+1,
					max: i+1,
					width: _excelColWidth( data, i ),
					customWidth: 1
				}
			} ) );
		}

		// Workbook modifications
		var workbook = xlsx.xl['workbook.xml'];

		$( 'sheets sheet', workbook ).attr( 'name', _sheetname( config ) );

		// Auto filter for columns
		if ( config.autoFilter ) {
			$('mergeCells', rels).before( _createNode( rels, 'autoFilter', {
				attr: {
					ref: 'A'+dataStartRow+':'+createCellPos(data.header.length-1)+dataEndRow
				}
			} ) );

			$('definedNames', workbook).append( _createNode( workbook, 'definedName', {
				attr: {
					name: '_xlnm._FilterDatabase',
					localSheetId: '0',
					hidden: 1
				},
				text: _sheetname(config)+'!$A$'+dataStartRow+':'+createCellPos(data.header.length-1)+dataEndRow
			} ) );
		}

		// Let the developer customise the document if they want to
		if ( config.customize ) {
			config.customize( xlsx, config, dt );
		}

		// Excel doesn't like an empty mergeCells tag
		if ( $('mergeCells', rels).children().length === 0 ) {
			$('mergeCells', rels).remove();
		}

		var jszip = _jsZip();
		var zip = new jszip();
		var zipConfig = {
			type: 'blob',
			mimeType: 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet'
		};

		_addToZip( zip, xlsx );

		if ( zip.generateAsync ) {
			// JSZip 3+
			zip
				.generateAsync( zipConfig )
				.then( function ( blob ) {
					_saveAs( blob, exportInfo.filename );
					that.processing( false );
				} );
		}
		else {
			// JSZip 2.5
			_saveAs(
				zip.generate( zipConfig ),
				exportInfo.filename
			);
			this.processing( false );
		}
	},

	filename: '*',

	extension: '.xlsx',

	exportOptions: {},

	header: true,

	footer: false,

	title: '*',

	messageTop: '*',

	messageBottom: '*',

	createEmptyCells: false,

	autoFilter: false,

	sheetName: ''
};

//
// PDF export - using pdfMake - http://pdfmake.org
//
DataTable.ext.buttons.pdfHtml5 = {
	className: 'buttons-pdf buttons-html5',

	available: function () {
		return window.FileReader !== undefined && _pdfMake();
	},

	text: function ( dt ) {
		return dt.i18n( 'buttons.pdf', 'PDF' );
	},

	action: function ( e, dt, button, config ) {
		this.processing( true );

		var that = this;
		var data = dt.buttons.exportData( config.exportOptions );
		var info = dt.buttons.exportInfo( config );
		var rows = [];

		if ( config.header ) {
			rows.push( $.map( data.header, function ( d ) {
				return {
					text: typeof d === 'string' ? d : d+'',
					style: 'tableHeader'
				};
			} ) );
		}

		for ( var i=0, ien=data.body.length ; i<ien ; i++ ) {
			rows.push( $.map( data.body[i], function ( d ) {
				if ( d === null || d === undefined ) {
					d = '';
				}
				return {
					text: typeof d === 'string' ? d : d+'',
					style: i % 2 ? 'tableBodyEven' : 'tableBodyOdd'
				};
			} ) );
		}

		if ( config.footer && data.footer) {
			rows.push( $.map( data.footer, function ( d ) {
				return {
					text: typeof d === 'string' ? d : d+'',
					style: 'tableFooter'
				};
			} ) );
		}

		var doc = {
			pageSize: config.pageSize,
			pageOrientation: config.orientation,
			content: [
				{
					table: {
						headerRows: 1,
						body: rows
					},
					layout: 'noBorders'
				}
			],
			styles: {
				tableHeader: {
					bold: true,
					fontSize: 11,
					color: 'white',
					fillColor: '#2d4154',
					alignment: 'center'
				},
				tableBodyEven: {},
				tableBodyOdd: {
					fillColor: '#f3f3f3'
				},
				tableFooter: {
					bold: true,
					fontSize: 11,
					color: 'white',
					fillColor: '#2d4154'
				},
				title: {
					alignment: 'center',
					fontSize: 15
				},
				message: {}
			},
			defaultStyle: {
				fontSize: 10
			}
		};

		if ( info.messageTop ) {
			doc.content.unshift( {
				text: info.messageTop,
				style: 'message',
				margin: [ 0, 0, 0, 12 ]
			} );
		}

		if ( info.messageBottom ) {
			doc.content.push( {
				text: info.messageBottom,
				style: 'message',
				margin: [ 0, 0, 0, 12 ]
			} );
		}

		if ( info.title ) {
			doc.content.unshift( {
				text: info.title,
				style: 'title',
				margin: [ 0, 0, 0, 12 ]
			} );
		}

		if ( config.customize ) {
			config.customize( doc, config, dt );
		}

		var pdf = _pdfMake().createPdf( doc );

		if ( config.download === 'open' && ! _isDuffSafari() ) {
			pdf.open();
		}
		else {
			pdf.download( info.filename );
		}

		this.processing( false );
	},

	title: '*',

	filename: '*',

	extension: '.pdf',

	exportOptions: {},

	orientation: 'portrait',

	pageSize: 'A4',

	header: true,

	footer: false,

	messageTop: '*',

	messageBottom: '*',

	customize: null,

	download: 'download'
};


return DataTable.Buttons;
}));


var _fnGetHeaders = function(dt) {
    var thRows = $(dt.header()[0]).children();
    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;
};


var _fnGetFooters = function(dt) {
    var thRows = $(dt.footer()[0]).children();
    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;
};