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Edit File: buttons.print.js

/*!
 * Print button for Buttons and DataTables.
 * 2016 SpryMedia Ltd - datatables.net/license
 */

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

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

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

var _link = document.createElement( 'a' );

/**
 * Clone link and style tags, taking into account the need to change the source
 * path.
 *
 * @param  {node}     el Element to convert
 */
var _styleToAbs = function( el ) {
	var url;
	var clone = $(el).clone()[0];
	var linkHost;

if ( clone.nodeName.toLowerCase() === 'link' ) {
		clone.href = _relToAbs( clone.href );
	}

return clone.outerHTML;
};

/**
 * Convert a URL from a relative to an absolute address so it will work
 * correctly in the popup window which has no base URL.
 *
 * @param  {string} href URL
 */
var _relToAbs = function( href ) {
	// Assign to a link on the original page so the browser will do all the
	// hard work of figuring out where the file actually is
	_link.href = href;
	var linkHost = _link.host;

// IE doesn't have a trailing slash on the host
	// Chrome has it on the pathname
	if ( linkHost.indexOf('/') === -1 && _link.pathname.indexOf('/') !== 0) {
		linkHost += '/';
	}

return _link.protocol+"//"+linkHost+_link.pathname+_link.search;
};

DataTable.ext.buttons.print = {
	className: 'buttons-print',

text: function ( dt ) {
		return dt.i18n( 'buttons.print', 'Print' );
	},

action: function ( e, dt, button, config ) {
		var data = dt.buttons.exportData(
			$.extend( {decodeEntities: false}, config.exportOptions ) // XSS protection
		);
		var exportInfo = dt.buttons.exportInfo( config );
		var columnClasses = dt
			.columns( config.exportOptions.columns )
			.flatten()
			.map( function (idx) {
				return dt.settings()[0].aoColumns[dt.column(idx).index()].sClass;
			} )
			.toArray();

var addRow = function ( d, tag ) {
			var str = '<tr>';

for ( var i=0, ien=d.length ; i<ien ; i++ ) {
				// null and undefined aren't useful in the print output
				var dataOut = d[i] === null || d[i] === undefined ?
					'' :
					d[i];
				var classAttr = columnClasses[i] ?
					'class="'+columnClasses[i]+'"' :
					'';

str += '<'+tag+' '+classAttr+'>'+dataOut+'</'+tag+'>';
			}

return str + '</tr>';
		};

// Construct a table for printing
		var html = '<table class="'+dt.table().node().className+'">';

if ( config.header ) {
			html += '<thead>'+ addRow( data.header, 'th' ) +'</thead>';
		}

html += '<tbody>';
		for ( var i=0, ien=data.body.length ; i<ien ; i++ ) {
			html += addRow( data.body[i], 'td' );
		}
		html += '</tbody>';

if ( config.footer && data.footer ) {
			html += '<tfoot>'+ addRow( data.footer, 'th' ) +'</tfoot>';
		}
		html += '</table>';

// Open a new window for the printable table
		var win = window.open( '', '' );
		win.document.close();

// Inject the title and also a copy of the style and link tags from this
		// document so the table can retain its base styling. Note that we have
		// to use string manipulation as IE won't allow elements to be created
		// in the host document and then appended to the new window.
		var head = '<title>'+exportInfo.title+'</title>';
		$('style, link').each( function () {
			head += _styleToAbs( this );
		} );

try {
			win.document.head.innerHTML = head; // Work around for Edge
		}
		catch (e) {
			$(win.document.head).html( head ); // Old IE
		}

// Inject the table and other surrounding information
		win.document.body.innerHTML =
			'<h1>'+exportInfo.title+'</h1>'+
			'<div>'+(exportInfo.messageTop || '')+'</div>'+
			html+
			'<div>'+(exportInfo.messageBottom || '')+'</div>';

$(win.document.body).addClass('dt-print-view');

$('img', win.document.body).each( function ( i, img ) {
			img.setAttribute( 'src', _relToAbs( img.getAttribute('src') ) );
		} );

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

// Allow stylesheets time to load
		var autoPrint = function () {
			if ( config.autoPrint ) {
				win.print(); // blocking - so close will not
				win.close(); // execute until this is done
			}
		};

if ( navigator.userAgent.match(/Trident\/\d.\d/) ) { // IE needs to call this without a setTimeout
			autoPrint();
		}
		else {
			win.setTimeout( autoPrint, 1000 );
		}
	},

title: '*',

messageTop: '*',

messageBottom: '*',

exportOptions: {},

header: true,

footer: false,

autoPrint: true,

customize: null
};

return DataTable.Buttons;
}));