getSVG: function()

in pytheas-core/src/main/resources/js/Highcharts/modules/exporting.src.js [179:337]

• 44 lines of code
• 4 McCabe index (conditional complexity)

	getSVG: function (additionalOptions) {
		var chart = this,
			chartCopy,
			sandbox,
			svg,
			seriesOptions,
			config,
			pointOptions,
			pointMarker,
			options = merge(chart.options, additionalOptions); // copy the options and add extra options

		// IE compatibility hack for generating SVG content that it doesn't really understand
		if (!doc.createElementNS) {
			/*jslint unparam: true*//* allow unused parameter ns in function below */
			doc.createElementNS = function (ns, tagName) {
				var elem = doc.createElement(tagName);
				elem.getBBox = function () {
					return HC.Renderer.prototype.Element.prototype.getBBox.apply({ element: elem });
				};
				return elem;
			};
			/*jslint unparam: false*/
		}

		// create a sandbox where a new chart will be generated
		sandbox = createElement(DIV, null, {
			position: ABSOLUTE,
			top: '-9999em',
			width: chart.chartWidth + PX,
			height: chart.chartHeight + PX
		}, doc.body);

		// override some options
		extend(options.chart, {
			renderTo: sandbox,
			forExport: true
		});
		options.exporting.enabled = false; // hide buttons in print

		if (!options.exporting.enableImages) {
			options.chart.plotBackgroundImage = null; // the converter doesn't handle images
		}

		// prepare for replicating the chart
		options.series = [];
		each(chart.series, function (serie) {
			seriesOptions = serie.options;

			seriesOptions.animation = false; // turn off animation
			seriesOptions.showCheckbox = false;
			seriesOptions.visible = serie.visible;

			if (!options.exporting.enableImages) {
				// remove image markers
				if (seriesOptions && seriesOptions.marker && /^url\(/.test(seriesOptions.marker.symbol)) {
					seriesOptions.marker.symbol = 'circle';
				}
			}

			seriesOptions.data = [];

			each(serie.data, function (point) {

				// extend the options by those values that can be expressed in a number or array config
				config = point.config;
				pointOptions = {
					x: point.x,
					y: point.y,
					name: point.name
				};

				if (typeof config === 'object' && point.config && config.constructor !== Array) {
					extend(pointOptions, config);
				}

				pointOptions.visible = point.visible;
				seriesOptions.data.push(pointOptions); // copy fresh updated data

				if (!options.exporting.enableImages) {
					// remove image markers
					pointMarker = point.config && point.config.marker;
					if (pointMarker && /^url\(/.test(pointMarker.symbol)) {
						delete pointMarker.symbol;
					}
				}
			});

			options.series.push(seriesOptions);
		});

		// generate the chart copy
		chartCopy = new Highcharts.Chart(options);

		// reflect axis extremes in the export
		each(['xAxis', 'yAxis'], function (axisType) {
			each(chart[axisType], function (axis, i) {
				var axisCopy = chartCopy[axisType][i],
					extremes = axis.getExtremes(),
					userMin = extremes.userMin,
					userMax = extremes.userMax;

				if (userMin !== UNDEFINED || userMax !== UNDEFINED) {
					axisCopy.setExtremes(userMin, userMax, true, false);
				}
			});
		});

		// get the SVG from the container's innerHTML
		svg = chartCopy.container.innerHTML;

		// free up memory
		options = null;
		chartCopy.destroy();
		discardElement(sandbox);

		// sanitize
		svg = svg
			.replace(/zIndex="[^"]+"/g, '')
			.replace(/isShadow="[^"]+"/g, '')
			.replace(/symbolName="[^"]+"/g, '')
			.replace(/jQuery[0-9]+="[^"]+"/g, '')
			.replace(/isTracker="[^"]+"/g, '')
			.replace(/url\([^#]+#/g, 'url(#')
			.replace(/<svg /, '<svg xmlns:xlink="http://www.w3.org/1999/xlink" ')
			.replace(/ href=/g, ' xlink:href=')
			/*.replace(/preserveAspectRatio="none">/g, 'preserveAspectRatio="none"/>')*/
			/* This fails in IE < 8
			.replace(/([0-9]+)\.([0-9]+)/g, function(s1, s2, s3) { // round off to save weight
				return s2 +'.'+ s3[0];
			})*/

			// Replace HTML entities, issue #347
			.replace(/&nbsp;/g, '\u00A0') // no-break space
			.replace(/&shy;/g,  '\u00AD') // soft hyphen

			// IE specific
			.replace(/id=([^" >]+)/g, 'id="$1"')
			.replace(/class=([^" ]+)/g, 'class="$1"')
			.replace(/ transform /g, ' ')
			.replace(/:(path|rect)/g, '$1')
			.replace(/<img ([^>]*)>/gi, '<image $1 />')
			.replace(/<\/image>/g, '') // remove closing tags for images as they'll never have any content
			.replace(/<image ([^>]*)([^\/])>/gi, '<image $1$2 />') // closes image tags for firefox
			.replace(/width=(\d+)/g, 'width="$1"')
			.replace(/height=(\d+)/g, 'height="$1"')
			.replace(/hc-svg-href="/g, 'xlink:href="')
			.replace(/style="([^"]+)"/g, function (s) {
				return s.toLowerCase();
			});

		// IE9 beta bugs with innerHTML. Test again with final IE9.
		svg = svg.replace(/(url\(#highcharts-[0-9]+)&quot;/g, '$1')
			.replace(/&quot;/g, "'");
		if (svg.match(/ xmlns="/g).length === 2) {
			svg = svg.replace(/xmlns="[^"]+"/, '');
		}

		return svg;
	},