199 lines
4.6 KiB
JavaScript
199 lines
4.6 KiB
JavaScript
/*!
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* Print button for Buttons and DataTables.
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* © SpryMedia Ltd - datatables.net/license
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*/
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import jQuery from 'jquery';
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import DataTable from 'datatables.net';
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import Buttons from 'datatables.net-buttons';
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// Allow reassignment of the $ variable
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let $ = jQuery;
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var _link = document.createElement('a');
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/**
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* Clone link and style tags, taking into account the need to change the source
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* path.
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*
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* @param {node} el Element to convert
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*/
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var _styleToAbs = function (el) {
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var url;
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var clone = $(el).clone()[0];
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var linkHost;
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if (clone.nodeName.toLowerCase() === 'link') {
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clone.href = _relToAbs(clone.href);
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}
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return clone.outerHTML;
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};
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/**
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* Convert a URL from a relative to an absolute address so it will work
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* correctly in the popup window which has no base URL.
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*
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* @param {string} href URL
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*/
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var _relToAbs = function (href) {
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// Assign to a link on the original page so the browser will do all the
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// hard work of figuring out where the file actually is
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_link.href = href;
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var linkHost = _link.host;
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// IE doesn't have a trailing slash on the host
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// Chrome has it on the pathname
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if (linkHost.indexOf('/') === -1 && _link.pathname.indexOf('/') !== 0) {
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linkHost += '/';
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}
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return _link.protocol + '//' + linkHost + _link.pathname + _link.search;
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};
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DataTable.ext.buttons.print = {
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className: 'buttons-print',
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text: function (dt) {
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return dt.i18n('buttons.print', 'Print');
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},
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action: function (e, dt, button, config) {
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var data = dt.buttons.exportData(
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$.extend({ decodeEntities: false }, config.exportOptions) // XSS protection
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);
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var exportInfo = dt.buttons.exportInfo(config);
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var columnClasses = dt
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.columns(config.exportOptions.columns)
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.flatten()
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.map(function (idx) {
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return dt.settings()[0].aoColumns[dt.column(idx).index()].sClass;
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})
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.toArray();
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var addRow = function (d, tag) {
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var str = '<tr>';
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for (var i = 0, ien = d.length; i < ien; i++) {
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// null and undefined aren't useful in the print output
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var dataOut = d[i] === null || d[i] === undefined ? '' : d[i];
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var classAttr = columnClasses[i] ? 'class="' + columnClasses[i] + '"' : '';
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str += '<' + tag + ' ' + classAttr + '>' + dataOut + '</' + tag + '>';
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}
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return str + '</tr>';
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};
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// Construct a table for printing
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var html = '<table class="' + dt.table().node().className + '">';
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if (config.header) {
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html += '<thead>' + addRow(data.header, 'th') + '</thead>';
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}
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html += '<tbody>';
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for (var i = 0, ien = data.body.length; i < ien; i++) {
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html += addRow(data.body[i], 'td');
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}
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html += '</tbody>';
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if (config.footer && data.footer) {
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html += '<tfoot>' + addRow(data.footer, 'th') + '</tfoot>';
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}
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html += '</table>';
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// Open a new window for the printable table
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var win = window.open('', '');
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if (!win) {
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dt.buttons.info(
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dt.i18n('buttons.printErrorTitle', 'Unable to open print view'),
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dt.i18n(
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'buttons.printErrorMsg',
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'Please allow popups in your browser for this site to be able to view the print view.'
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),
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5000
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);
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return;
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}
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win.document.close();
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// Inject the title and also a copy of the style and link tags from this
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// document so the table can retain its base styling. Note that we have
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// to use string manipulation as IE won't allow elements to be created
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// in the host document and then appended to the new window.
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var head = '<title>' + exportInfo.title + '</title>';
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$('style, link').each(function () {
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head += _styleToAbs(this);
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});
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try {
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win.document.head.innerHTML = head; // Work around for Edge
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} catch (e) {
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$(win.document.head).html(head); // Old IE
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}
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// Inject the table and other surrounding information
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win.document.body.innerHTML =
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'<h1>' +
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exportInfo.title +
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'</h1>' +
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'<div>' +
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(exportInfo.messageTop || '') +
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'</div>' +
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html +
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'<div>' +
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(exportInfo.messageBottom || '') +
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'</div>';
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$(win.document.body).addClass('dt-print-view');
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$('img', win.document.body).each(function (i, img) {
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img.setAttribute('src', _relToAbs(img.getAttribute('src')));
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});
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if (config.customize) {
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config.customize(win, config, dt);
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}
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// Allow stylesheets time to load
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var autoPrint = function () {
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if (config.autoPrint) {
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win.print(); // blocking - so close will not
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win.close(); // execute until this is done
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}
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};
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if (navigator.userAgent.match(/Trident\/\d.\d/)) {
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// IE needs to call this without a setTimeout
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autoPrint();
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}
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else {
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win.setTimeout(autoPrint, 1000);
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}
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},
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title: '*',
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messageTop: '*',
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messageBottom: '*',
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exportOptions: {},
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header: true,
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footer: false,
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autoPrint: true,
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customize: null
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};
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export default DataTable;
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