/**
 * @license Highcharts JS v7.0.3 (2019-02-06)
 * Exporting module
 *
 * (c) 2010-2019 Torstein Honsi
 *
 * License: www.highcharts.com/license
 */
'use strict';
(function (factory) {
    if (typeof module === 'object' && module.exports) {
        factory['default'] = factory;
        module.exports = factory;
    } else if (typeof define === 'function' && define.amd) {
        define(function () {
            return factory;
        });
    } else {
        factory(typeof Highcharts !== 'undefined' ? Highcharts : undefined);
    }
}(function (Highcharts) {
    (function (H) {
        /* *
         * (c) 2010-2017 Christer Vasseng, Torstein Honsi
         *
         * License: www.highcharts.com/license
         */



        /**
         * @interface Highcharts.AjaxSettings
         *//**
         * The URL to call.
         *
         * @name Highcharts.AjaxSettings#url
         * @type {string}
         *//**
         * The verb to use.
         *
         * @name Highcharts.AjaxSettings#type
         * @type {"get"|"post"|"update"|"delete"}
         *//**
         * The data type expected.
         *
         * @name Highcharts.AjaxSettings#dataType
         * @type {"json"|"xml"|"text"|"octet"}
         *//**
         * Function to call on success.
         *
         * @name Highcharts.AjaxSettings#success
         * @type {Function}
         *//**
         * Function to call on error.
         *
         * @name Highcharts.AjaxSettings#error
         * @type {Function}
         *//**
         * The payload to send.
         *
         * @name Highcharts.AjaxSettings#data
         * @type {object}
         *//**
         * The headers; keyed on header name.
         *
         * @name Highcharts.AjaxSettings#headers
         * @type {object}
         */

        /**
         * Perform an Ajax call.
         *
         * @function Highcharts.ajax
         *
         * @param {Highcharts.AjaxSettings} attr
         *        The Ajax settings to use.
         */
        H.ajax = function (attr) {
            var options = H.merge(true, {
                    url: false,
                    type: 'GET',
                    dataType: 'json',
                    success: false,
                    error: false,
                    data: false,
                    headers: {}
                }, attr),
                headers = {
                    json: 'application/json',
                    xml: 'application/xml',
                    text: 'text/plain',
                    octet: 'application/octet-stream'
                },
                r = new XMLHttpRequest();

            function handleError(xhr, err) {
                if (options.error) {
                    options.error(xhr, err);
                } else {
                    // Maybe emit a highcharts error event here
                }
            }

            if (!options.url) {
                return false;
            }

            r.open(options.type.toUpperCase(), options.url, true);
            r.setRequestHeader(
                'Content-Type',
                headers[options.dataType] || headers.text
            );

            H.objectEach(options.headers, function (val, key) {
                r.setRequestHeader(key, val);
            });

            r.onreadystatechange = function () {
                var res;

                if (r.readyState === 4) {
                    if (r.status === 200) {
                        res = r.responseText;
                        if (options.dataType === 'json') {
                            try {
                                res = JSON.parse(res);
                            } catch (e) {
                                return handleError(r, e);
                            }
                        }
                        return options.success && options.success(res);
                    }

                    handleError(r, r.responseText);
                }
            };

            try {
                options.data = JSON.stringify(options.data);
            } catch (e) {}

            r.send(options.data || true);
        };

    }(Highcharts));
    (function (Highcharts) {
        /* *
         * Mixin for downloading content in the browser
         *
         * (c) 2015-2019 Oystein Moseng
         *
         * License: www.highcharts.com/license
         */



        var win = Highcharts.win,
            nav = win.navigator,
            doc = win.document,
            domurl = win.URL || win.webkitURL || win,
            isEdgeBrowser = /Edge\/\d+/.test(nav.userAgent);

        // Convert base64 dataURL to Blob if supported, otherwise returns undefined
        Highcharts.dataURLtoBlob = function (dataURL) {
            var parts = dataURL.match(/data:([^;]*)(;base64)?,([0-9A-Za-z+/]+)/);

            if (
                parts &&
                parts.length > 3 &&
                win.atob &&
                win.ArrayBuffer &&
                win.Uint8Array &&
                win.Blob &&
                domurl.createObjectURL
            ) {
                // Try to convert data URL to Blob
                var binStr = win.atob(parts[3]),
                    buf = new win.ArrayBuffer(binStr.length),
                    binary = new win.Uint8Array(buf),
                    blob;

                for (var i = 0; i < binary.length; ++i) {
                    binary[i] = binStr.charCodeAt(i);
                }

                blob = new win.Blob([binary], { 'type': parts[1] });
                return domurl.createObjectURL(blob);
            }
        };


        /**
         * Download a data URL in the browser. Can also take a blob as first param.
         *
         * @private
         * @function Highcharts.downloadURL
         *
         * @param {string|object} dataURL
         *        The dataURL/Blob to download
         *
         * @param {string} filename
         *        The name of the resulting file (w/extension)
         */
        Highcharts.downloadURL = function (dataURL, filename) {
            var a = doc.createElement('a'),
                windowRef;

            // IE specific blob implementation
            // Don't use for normal dataURLs
            if (
                typeof dataURL !== 'string' &&
                !(dataURL instanceof String) &&
                nav.msSaveOrOpenBlob
            ) {
                nav.msSaveOrOpenBlob(dataURL, filename);
                return;
            }

            // Some browsers have limitations for data URL lengths. Try to convert to
            // Blob or fall back. Edge always needs that blob.
            if (isEdgeBrowser || dataURL.length > 2000000) {
                dataURL = Highcharts.dataURLtoBlob(dataURL);
                if (!dataURL) {
                    throw new Error('Failed to convert to blob');
                }
            }

            // Try HTML5 download attr if supported
            if (a.download !== undefined) {
                a.href = dataURL;
                a.download = filename; // HTML5 download attribute
                doc.body.appendChild(a);
                a.click();
                doc.body.removeChild(a);
            } else {
                // No download attr, just opening data URI
                try {
                    windowRef = win.open(dataURL, 'chart');
                    if (windowRef === undefined || windowRef === null) {
                        throw new Error('Failed to open window');
                    }
                } catch (e) {
                    // window.open failed, trying location.href
                    win.location.href = dataURL;
                }
            }
        };

    }(Highcharts));
    (function (Highcharts) {
        /**
         * Experimental data export module for Highcharts
         *
         * (c) 2010-2019 Torstein Honsi
         *
         * License: www.highcharts.com/license
         */

        // @todo
        // - Set up systematic tests for all series types, paired with tests of the data
        //   module importing the same data.



        var defined = Highcharts.defined,
            pick = Highcharts.pick,
            win = Highcharts.win,
            doc = win.document,
            seriesTypes = Highcharts.seriesTypes,
            downloadURL = Highcharts.downloadURL;

        // Can we add this to utils? Also used in screen-reader.js
        /**
         * HTML encode some characters vulnerable for XSS.
         * @param  {string} html The input string
         * @return {string} The excaped string
         */
        function htmlencode(html) {
            return html
                .replace(/&/g, '&amp;')
                .replace(/</g, '&lt;')
                .replace(/>/g, '&gt;')
                .replace(/"/g, '&quot;')
                .replace(/'/g, '&#x27;')
                .replace(/\//g, '&#x2F;');
        }

        Highcharts.setOptions({

            /**
             * @optionparent exporting
             */
            exporting: {

                /**
                 * Export-data module required. Caption for the data table. Same as
                 * chart title by default. Set to `false` to disable.
                 *
                 * @sample highcharts/export-data/multilevel-table
                 *         Multiple table headers
                 *
                 * @type      {boolean|string}
                 * @since     6.0.4
                 * @apioption exporting.tableCaption
                 */

                /**
                 * Options for exporting data to CSV or ExCel, or displaying the data
                 * in a HTML table or a JavaScript structure. Requires the
                 * `export-data.js` module. This module adds data export options to the
                 * export menu and provides functions like `Chart.getCSV`,
                 * `Chart.getTable`, `Chart.getDataRows` and `Chart.viewData`.
                 *
                 * The XLS converter is limited and only creates a HTML string that is
                 * passed for download, which works but creates a warning before
                 * opening. The workaround for this is to use a third party XLSX
                 * converter, as demonstrated in the sample below.
                 *
                 * @sample  highcharts/export-data/categorized/ Categorized data
                 * @sample  highcharts/export-data/stock-timeaxis/ Highstock time axis
                 * @sample  highcharts/export-data/xlsx/
                 *          Using a third party XLSX converter
                 *
                 * @since 6.0.0
                 */
                csv: {

                    /**
                     * Formatter callback for the column headers. Parameters are:
                     * - `item` - The series or axis object)
                     * - `key` -  The point key, for example y or z
                     * - `keyLength` - The amount of value keys for this item, for
                     *   example a range series has the keys `low` and `high` so the
                     *   key length is 2.
                     *
                     * If [useMultiLevelHeaders](#exporting.useMultiLevelHeaders) is
                     * true, columnHeaderFormatter by default returns an object with
                     * columnTitle and topLevelColumnTitle for each key. Columns with
                     * the same topLevelColumnTitle have their titles merged into a
                     * single cell with colspan for table/Excel export.
                     *
                     * If `useMultiLevelHeaders` is false, or for CSV export, it returns
                     * the series name, followed by the key if there is more than one
                     * key.
                     *
                     * For the axis it returns the axis title or "Category" or
                     * "DateTime" by default.
                     *
                     * Return `false` to use Highcharts' proposed header.
                     *
                     * @sample highcharts/export-data/multilevel-table
                     *         Multiple table headers
                     *
                     * @type {Function|null}
                     */
                    columnHeaderFormatter: null,

                    /**
                     * Which date format to use for exported dates on a datetime X axis.
                     * See `Highcharts.dateFormat`.
                     */
                    dateFormat: '%Y-%m-%d %H:%M:%S',

                    /**
                     * Which decimal point to use for exported CSV. Defaults to the same
                     * as the browser locale, typically `.` (English) or `,` (German,
                     * French etc).
                     *
                     * @type  {string|null}
                     * @since 6.0.4
                     */
                    decimalPoint: null,

                    /**
                     * The item delimiter in the exported data. Use `;` for direct
                     * exporting to Excel. Defaults to a best guess based on the browser
                     * locale. If the locale _decimal point_ is `,`, the `itemDelimiter`
                     * defaults to `;`, otherwise the `itemDelimiter` defaults to `,`.
                     *
                     * @type {string|null}
                     */
                    itemDelimiter: null,

                    /**
                     * The line delimiter in the exported data, defaults to a newline.
                     */
                    lineDelimiter: '\n'

                },

                /**
                 * Export-data module required. Show a HTML table below the chart with
                 * the chart's current data.
                 *
                 * @sample highcharts/export-data/showtable/
                 *         Show the table
                 * @sample highcharts/studies/exporting-table-html
                 *         Experiment with putting the table inside the subtitle to
                 *         allow exporting it.
                 *
                 * @since 6.0.0
                 */
                showTable: false,

                /**
                 * Export-data module required. Use multi level headers in data table.
                 * If [csv.columnHeaderFormatter](#exporting.csv.columnHeaderFormatter)
                 * is defined, it has to return objects in order for multi level headers
                 * to work.
                 *
                 * @sample highcharts/export-data/multilevel-table
                 *         Multiple table headers
                 *
                 * @since 6.0.4
                 */
                useMultiLevelHeaders: true,

                /**
                 * Export-data module required. If using multi level table headers, use
                 * rowspans for headers that have only one level.
                 *
                 * @sample highcharts/export-data/multilevel-table
                 *         Multiple table headers
                 *
                 * @since 6.0.4
                 */
                useRowspanHeaders: true
            },

            /**
             * @optionparent lang
             */
            lang: {

                /**
                 * Export-data module only. The text for the menu item.
                 *
                 * @since 6.0.0
                 */
                downloadCSV: 'Download CSV',

                /**
                 * Export-data module only. The text for the menu item.
                 *
                 * @since 6.0.0
                 */
                downloadXLS: 'Download XLS',

                /**
                 * Export-data module only. The text for the menu item.
                 *
                 * @since 6.1.0
                 */
                openInCloud: 'Open in Highcharts Cloud',

                /**
                 * Export-data module only. The text for the menu item.
                 *
                 * @since 6.0.0
                 */
                viewData: 'View data table'
            }
        });

        // Add an event listener to handle the showTable option
        Highcharts.addEvent(Highcharts.Chart, 'render', function () {
            if (
                this.options &&
                this.options.exporting &&
                this.options.exporting.showTable
            ) {
                this.viewData();
            }
        });

        /**
         * Set up key-to-axis bindings. This is used when the Y axis is datetime or
         * categorized. For example in an arearange series, the low and high values
         * should be formatted according to the Y axis type, and in order to link them
         * we need this map.
         *
         * @private
         * @function Highcharts.Chart#setUpKeyToAxis
         */
        Highcharts.Chart.prototype.setUpKeyToAxis = function () {
            if (seriesTypes.arearange) {
                seriesTypes.arearange.prototype.keyToAxis = {
                    low: 'y',
                    high: 'y'
                };
            }
            if (seriesTypes.gantt) {
                seriesTypes.gantt.prototype.keyToAxis = {
                    start: 'x',
                    end: 'x'
                };
            }
        };

        /**
         * Export-data module required. Returns a two-dimensional array containing the
         * current chart data.
         *
         * @function Highcharts.Chart#getDataRows
         *
         * @param {boolean} multiLevelHeaders
         *        Use multilevel headers for the rows by default. Adds an extra row with
         *        top level headers. If a custom columnHeaderFormatter is defined, this
         *        can override the behavior.
         *
         * @return {Array<Array<number|string>>}
         *         The current chart data
         */
        Highcharts.Chart.prototype.getDataRows = function (multiLevelHeaders) {
            var time = this.time,
                csvOptions = (this.options.exporting && this.options.exporting.csv) ||
                    {},
                xAxis,
                xAxes = this.xAxis,
                rows = {},
                rowArr = [],
                dataRows,
                topLevelColumnTitles = [],
                columnTitles = [],
                columnTitleObj,
                i,
                x,
                xTitle,
                // Options
                columnHeaderFormatter = function (item, key, keyLength) {
                    if (csvOptions.columnHeaderFormatter) {
                        var s = csvOptions.columnHeaderFormatter(item, key, keyLength);

                        if (s !== false) {
                            return s;
                        }
                    }

                    if (!item) {
                        return 'Category';
                    }

                    if (item instanceof Highcharts.Axis) {
                        return (item.options.title && item.options.title.text) ||
                            (item.isDatetimeAxis ? 'DateTime' : 'Category');
                    }

                    if (multiLevelHeaders) {
                        return {
                            columnTitle: keyLength > 1 ? key : item.name,
                            topLevelColumnTitle: item.name
                        };
                    }

                    return item.name + (keyLength > 1 ? ' (' + key + ')' : '');
                },
                xAxisIndices = [];

            // Loop the series and index values
            i = 0;

            this.setUpKeyToAxis();

            this.series.forEach(function (series) {
                var keys = series.options.keys,
                    pointArrayMap = keys || series.pointArrayMap || ['y'],
                    valueCount = pointArrayMap.length,
                    xTaken = !series.requireSorting && {},
                    categoryMap = {},
                    datetimeValueAxisMap = {},
                    xAxisIndex = xAxes.indexOf(series.xAxis),
                    mockSeries,
                    j;

                // Map the categories for value axes
                pointArrayMap.forEach(function (prop) {
                    var axisName = (
                        (series.keyToAxis && series.keyToAxis[prop]) ||
                        prop
                    ) + 'Axis';

                    categoryMap[prop] = (
                        series[axisName] &&
                        series[axisName].categories
                    ) || [];
                    datetimeValueAxisMap[prop] = (
                        series[axisName] &&
                        series[axisName].isDatetimeAxis
                    );
                });

                if (
                    series.options.includeInCSVExport !== false &&
                    !series.options.isInternal &&
                    series.visible !== false // #55
                ) {

                    // Build a lookup for X axis index and the position of the first
                    // series that belongs to that X axis. Includes -1 for non-axis
                    // series types like pies.
                    if (!Highcharts.find(xAxisIndices, function (index) {
                        return index[0] === xAxisIndex;
                    })) {
                        xAxisIndices.push([xAxisIndex, i]);
                    }

                    // Compute the column headers and top level headers, usually the
                    // same as series names
                    j = 0;
                    while (j < valueCount) {
                        columnTitleObj = columnHeaderFormatter(
                            series,
                            pointArrayMap[j],
                            pointArrayMap.length
                        );
                        columnTitles.push(
                            columnTitleObj.columnTitle || columnTitleObj
                        );
                        if (multiLevelHeaders) {
                            topLevelColumnTitles.push(
                                columnTitleObj.topLevelColumnTitle || columnTitleObj
                            );
                        }
                        j++;
                    }

                    mockSeries = {
                        chart: series.chart,
                        autoIncrement: series.autoIncrement,
                        options: series.options,
                        pointArrayMap: series.pointArrayMap
                    };

                    // Export directly from options.data because we need the uncropped
                    // data (#7913), and we need to support Boost (#7026).
                    series.options.data.forEach(function eachData(options, pIdx) {
                        var key,
                            prop,
                            val,
                            name,
                            point;

                        point = { series: mockSeries };
                        series.pointClass.prototype.applyOptions.apply(
                            point,
                            [options]
                        );
                        key = point.x;
                        name = series.data[pIdx] && series.data[pIdx].name;

                        if (xTaken) {
                            if (xTaken[key]) {
                                key += '|' + pIdx;
                            }
                            xTaken[key] = true;
                        }

                        j = 0;

                        // Pies, funnels, geo maps etc. use point name in X row
                        if (!series.xAxis || series.exportKey === 'name') {
                            key = name;
                        }


                        if (!rows[key]) {
                            // Generate the row
                            rows[key] = [];
                            // Contain the X values from one or more X axes
                            rows[key].xValues = [];
                        }
                        rows[key].x = point.x;
                        rows[key].name = name;
                        rows[key].xValues[xAxisIndex] = point.x;

                        while (j < valueCount) {
                            prop = pointArrayMap[j]; // y, z etc
                            val = point[prop];
                            rows[key][i + j] = pick(
                                categoryMap[prop][val], // Y axis category if present
                                datetimeValueAxisMap[prop] ?
                                    time.dateFormat(csvOptions.dateFormat, val) :
                                    null,
                                val
                            );
                            j++;
                        }

                    });
                    i = i + j;
                }
            });

            // Make a sortable array
            for (x in rows) {
                if (rows.hasOwnProperty(x)) {
                    rowArr.push(rows[x]);
                }
            }

            var xAxisIndex, column;

            // Add computed column headers and top level headers to final row set
            dataRows = multiLevelHeaders ? [topLevelColumnTitles, columnTitles] :
                [columnTitles];

            i = xAxisIndices.length;
            while (i--) { // Start from end to splice in
                xAxisIndex = xAxisIndices[i][0];
                column = xAxisIndices[i][1];
                xAxis = xAxes[xAxisIndex];

                // Sort it by X values
                rowArr.sort(function (a, b) { // eslint-disable-line no-loop-func
                    return a.xValues[xAxisIndex] - b.xValues[xAxisIndex];
                });

                // Add header row
                xTitle = columnHeaderFormatter(xAxis);
                dataRows[0].splice(column, 0, xTitle);
                if (multiLevelHeaders && dataRows[1]) {
                    // If using multi level headers, we just added top level header.
                    // Also add for sub level
                    dataRows[1].splice(column, 0, xTitle);
                }

                // Add the category column
                rowArr.forEach(function (row) { // eslint-disable-line no-loop-func
                    var category = row.name;

                    if (xAxis && !defined(category)) {
                        if (xAxis.isDatetimeAxis) {
                            if (row.x instanceof Date) {
                                row.x = row.x.getTime();
                            }
                            category = time.dateFormat(
                                csvOptions.dateFormat,
                                row.x
                            );
                        } else if (xAxis.categories) {
                            category = pick(
                                xAxis.names[row.x],
                                xAxis.categories[row.x],
                                row.x
                            );
                        } else {
                            category = row.x;
                        }
                    }

                    // Add the X/date/category
                    row.splice(column, 0, category);
                });
            }
            dataRows = dataRows.concat(rowArr);

            Highcharts.fireEvent(this, 'exportData', { dataRows: dataRows });

            return dataRows;
        };

        /**
         * Export-data module required. Returns the current chart data as a CSV string.
         *
         * @function Highcharts.Chart#getCSV
         *
         * @param {boolean} useLocalDecimalPoint
         *        Whether to use the local decimal point as detected from the browser.
         *        This makes it easier to export data to Excel in the same locale as the
         *        user is.
         *
         * @return {string}
         *         CSV representation of the data
         */
        Highcharts.Chart.prototype.getCSV = function (useLocalDecimalPoint) {
            var csv = '',
                rows = this.getDataRows(),
                csvOptions = this.options.exporting.csv,
                decimalPoint = pick(
                    csvOptions.decimalPoint,
                    csvOptions.itemDelimiter !== ',' && useLocalDecimalPoint ?
                        (1.1).toLocaleString()[1] :
                        '.'
                ),
                // use ';' for direct to Excel
                itemDelimiter = pick(
                    csvOptions.itemDelimiter,
                    decimalPoint === ',' ? ';' : ','
                ),
                // '\n' isn't working with the js csv data extraction
                lineDelimiter = csvOptions.lineDelimiter;

            // Transform the rows to CSV
            rows.forEach(function (row, i) {
                var val = '',
                    j = row.length;

                while (j--) {
                    val = row[j];
                    if (typeof val === 'string') {
                        val = '"' + val + '"';
                    }
                    if (typeof val === 'number') {
                        if (decimalPoint !== '.') {
                            val = val.toString().replace('.', decimalPoint);
                        }
                    }
                    row[j] = val;
                }
                // Add the values
                csv += row.join(itemDelimiter);

                // Add the line delimiter
                if (i < rows.length - 1) {
                    csv += lineDelimiter;
                }
            });
            return csv;
        };

        /**
         * Export-data module required. Build a HTML table with the chart's current
         * data.
         *
         * @sample highcharts/export-data/viewdata/
         *         View the data from the export menu
         *
         * @function Highcharts.Chart#getTable
         *
         * @param {boolean} useLocalDecimalPoint
         *        Whether to use the local decimal point as detected from the browser.
         *        This makes it easier to export data to Excel in the same locale as the
         *        user is.
         *
         * @return {string}
         *         HTML representation of the data.
         */
        Highcharts.Chart.prototype.getTable = function (useLocalDecimalPoint) {
            var html = '<table id="highcharts-data-table-' + this.index + '">',
                options = this.options,
                decimalPoint = useLocalDecimalPoint ? (1.1).toLocaleString()[1] : '.',
                useMultiLevelHeaders = pick(
                    options.exporting.useMultiLevelHeaders, true
                ),
                rows = this.getDataRows(useMultiLevelHeaders),
                rowLength = 0,
                topHeaders = useMultiLevelHeaders ? rows.shift() : null,
                subHeaders = rows.shift(),
                // Compare two rows for equality
                isRowEqual = function (row1, row2) {
                    var i = row1.length;

                    if (row2.length === i) {
                        while (i--) {
                            if (row1[i] !== row2[i]) {
                                return false;
                            }
                        }
                    } else {
                        return false;
                    }
                    return true;
                },
                // Get table cell HTML from value
                getCellHTMLFromValue = function (tag, classes, attrs, value) {
                    var val = pick(value, ''),
                        className = 'text' + (classes ? ' ' + classes : '');

                    // Convert to string if number
                    if (typeof val === 'number') {
                        val = val.toString();
                        if (decimalPoint === ',') {
                            val = val.replace('.', decimalPoint);
                        }
                        className = 'number';
                    } else if (!value) {
                        className = 'empty';
                    }
                    return '<' + tag + (attrs ? ' ' + attrs : '') +
                            ' class="' + className + '">' +
                            val + '</' + tag + '>';
                },
                // Get table header markup from row data
                getTableHeaderHTML = function (topheaders, subheaders, rowLength) {
                    var html = '<thead>',
                        i = 0,
                        len = rowLength || subheaders && subheaders.length,
                        next,
                        cur,
                        curColspan = 0,
                        rowspan;

                    // Clean up multiple table headers. Chart.getDataRows() returns two
                    // levels of headers when using multilevel, not merged. We need to
                    // merge identical headers, remove redundant headers, and keep it
                    // all marked up nicely.
                    if (
                        useMultiLevelHeaders &&
                        topheaders &&
                        subheaders &&
                        !isRowEqual(topheaders, subheaders)
                    ) {
                        html += '<tr>';
                        for (; i < len; ++i) {
                            cur = topheaders[i];
                            next = topheaders[i + 1];
                            if (cur === next) {
                                ++curColspan;
                            } else if (curColspan) {
                                // Ended colspan
                                // Add cur to HTML with colspan.
                                html += getCellHTMLFromValue(
                                    'th',
                                    'highcharts-table-topheading',
                                    'scope="col" ' +
                                    'colspan="' + (curColspan + 1) + '"',
                                    cur
                                );
                                curColspan = 0;
                            } else {
                                // Cur is standalone. If it is same as sublevel,
                                // remove sublevel and add just toplevel.
                                if (cur === subheaders[i]) {
                                    if (options.exporting.useRowspanHeaders) {
                                        rowspan = 2;
                                        delete subheaders[i];
                                    } else {
                                        rowspan = 1;
                                        subheaders[i] = '';
                                    }
                                } else {
                                    rowspan = 1;
                                }
                                html += getCellHTMLFromValue(
                                    'th',
                                    'highcharts-table-topheading',
                                    'scope="col"' +
                                    (rowspan > 1 ?
                                        ' valign="top" rowspan="' + rowspan + '"' :
                                        ''),
                                    cur
                                );
                            }
                        }
                        html += '</tr>';
                    }

                    // Add the subheaders (the only headers if not using multilevels)
                    if (subheaders) {
                        html += '<tr>';
                        for (i = 0, len = subheaders.length; i < len; ++i) {
                            if (subheaders[i] !== undefined) {
                                html += getCellHTMLFromValue(
                                    'th', null, 'scope="col"', subheaders[i]
                                );
                            }
                        }
                        html += '</tr>';
                    }
                    html += '</thead>';
                    return html;
                };

            // Add table caption
            if (options.exporting.tableCaption !== false) {
                html += '<caption class="highcharts-table-caption">' + pick(
                    options.exporting.tableCaption,
                    (
                        options.title.text ?
                            htmlencode(options.title.text) :
                            'Chart'
                    )
                ) + '</caption>';
            }

            // Find longest row
            for (var i = 0, len = rows.length; i < len; ++i) {
                if (rows[i].length > rowLength) {
                    rowLength = rows[i].length;
                }
            }

            // Add header
            html += getTableHeaderHTML(
                topHeaders,
                subHeaders,
                Math.max(rowLength, subHeaders.length)
            );

            // Transform the rows to HTML
            html += '<tbody>';
            rows.forEach(function (row) {
                html += '<tr>';
                for (var j = 0; j < rowLength; j++) {
                    // Make first column a header too. Especially important for
                    // category axes, but also might make sense for datetime? Should
                    // await user feedback on this.
                    html += getCellHTMLFromValue(
                        j ? 'td' : 'th',
                        null,
                        j ? '' : 'scope="row"',
                        row[j]
                    );
                }
                html += '</tr>';
            });
            html += '</tbody></table>';

            var e = { html: html };

            Highcharts.fireEvent(this, 'afterGetTable', e);

            return e.html;
        };


        /**
         * Get a blob object from content, if blob is supported
         *
         * @private
         *
         * @param {String} content The content to create the blob from.
         * @param {String} type The type of the content.
         * @return {object} The blob object, or undefined if not supported.
         */
        function getBlobFromContent(content, type) {
            if (win.Blob && win.navigator.msSaveOrOpenBlob) {
                return new win.Blob(
                    ['\uFEFF' + content], // #7084
                    { type: type }
                );
            }
        }


        /**
         * Call this on click of 'Download CSV' button
         *
         * @private
         * @function Highcharts.Chart#downloadCSV
         */
        Highcharts.Chart.prototype.downloadCSV = function () {
            var csv = this.getCSV(true);

            downloadURL(
                getBlobFromContent(csv, 'text/csv') ||
                    'data:text/csv,\uFEFF' + encodeURIComponent(csv),
                this.getFilename() + '.csv'
            );
        };

        /**
         * Call this on click of 'Download XLS' button
         *
         * @private
         * @function Highcharts.Chart#downloadXLS
         */
        Highcharts.Chart.prototype.downloadXLS = function () {
            var uri = 'data:application/vnd.ms-excel;base64,',
                template = '<html xmlns:o="urn:schemas-microsoft-com:office:office" ' +
                    'xmlns:x="urn:schemas-microsoft-com:office:excel" ' +
                    'xmlns="http://www.w3.org/TR/REC-html40">' +
                    '<head><!--[if gte mso 9]><xml><x:ExcelWorkbook>' +
                    '<x:ExcelWorksheets><x:ExcelWorksheet>' +
                    '<x:Name>Ark1</x:Name>' +
                    '<x:WorksheetOptions><x:DisplayGridlines/></x:WorksheetOptions>' +
                    '</x:ExcelWorksheet></x:ExcelWorksheets></x:ExcelWorkbook>' +
                    '</xml><![endif]-->' +
                    '<style>td{border:none;font-family: Calibri, sans-serif;} ' +
                    '.number{mso-number-format:"0.00";} ' +
                    '.text{ mso-number-format:"\@";}</style>' +
                    '<meta name=ProgId content=Excel.Sheet>' +
                    '<meta charset=UTF-8>' +
                    '</head><body>' +
                    this.getTable(true) +
                    '</body></html>',
                base64 = function (s) {
                    return win.btoa(unescape(encodeURIComponent(s))); // #50
                };

            downloadURL(
                getBlobFromContent(template, 'application/vnd.ms-excel') ||
                    uri + base64(template),
                this.getFilename() + '.xls'
            );
        };

        /**
         * Export-data module required. View the data in a table below the chart.
         *
         * @function Highcharts.Chart#viewData
         */
        Highcharts.Chart.prototype.viewData = function () {
            if (!this.dataTableDiv) {
                this.dataTableDiv = doc.createElement('div');
                this.dataTableDiv.className = 'highcharts-data-table';

                // Insert after the chart container
                this.renderTo.parentNode.insertBefore(
                    this.dataTableDiv,
                    this.renderTo.nextSibling
                );
            }

            this.dataTableDiv.innerHTML = this.getTable();
        };

        /**
         * Experimental function to send a chart's config to the Cloud for editing.
         *
         * Limitations
         * - All functions (formatters and callbacks) are removed since they're not
         *   JSON.
         *
         * @function Highcharts.Chart#openInCloud
         *
         * @todo
         * - Let the Cloud throw a friendly warning about unsupported structures like
         *   formatters.
         * - Dynamically updated charts probably fail, we need a generic
         *   Chart.getOptions function that returns all non-default options. Should also
         *   be used by the export module.
         */
        Highcharts.Chart.prototype.openInCloud = function () {

            var options,
                paramObj,
                params;

            // Recursively remove function callbacks
            function removeFunctions(ob) {
                Object.keys(ob).forEach(function (key) {
                    if (typeof ob[key] === 'function') {
                        delete ob[key];
                    }
                    if (Highcharts.isObject(ob[key])) { // object and not an array
                        removeFunctions(ob[key]);
                    }
                });
            }

            function openInCloud() {
                var form = doc.createElement('form');

                doc.body.appendChild(form);
                form.method = 'post';
                form.action = 'https://cloud-api.highcharts.com/openincloud';
                form.target = '_blank';
                var input = doc.createElement('input');

                input.type = 'hidden';
                input.name = 'chart';
                input.value = params;
                form.appendChild(input);
                form.submit();
                doc.body.removeChild(form);
            }

            options = Highcharts.merge(this.userOptions);
            removeFunctions(options);

            paramObj = {
                name: (options.title && options.title.text) || 'Chart title',
                options: options,
                settings: {
                    constructor: 'Chart',
                    dataProvider: {
                        csv: this.getCSV()
                    }
                }
            };

            params = JSON.stringify(paramObj);
            openInCloud();
        };

        // Add "Download CSV" to the exporting menu.
        var exportingOptions = Highcharts.getOptions().exporting;

        if (exportingOptions) {

            Highcharts.extend(exportingOptions.menuItemDefinitions, {
                downloadCSV: {
                    textKey: 'downloadCSV',
                    onclick: function () {
                        this.downloadCSV();
                    }
                },
                downloadXLS: {
                    textKey: 'downloadXLS',
                    onclick: function () {
                        this.downloadXLS();
                    }
                },
                viewData: {
                    textKey: 'viewData',
                    onclick: function () {
                        this.viewData();
                    }
                },
                openInCloud: {
                    textKey: 'openInCloud',
                    onclick: function () {
                        this.openInCloud();
                    }
                }
            });

            exportingOptions.buttons.contextButton.menuItems.push(
                'separator',
                'downloadCSV',
                'downloadXLS',
                'viewData',
                'openInCloud'
            );
        }

        // Series specific
        if (seriesTypes.map) {
            seriesTypes.map.prototype.exportKey = 'name';
        }
        if (seriesTypes.mapbubble) {
            seriesTypes.mapbubble.prototype.exportKey = 'name';
        }
        if (seriesTypes.treemap) {
            seriesTypes.treemap.prototype.exportKey = 'name';
        }

    }(Highcharts));
    return (function () {


    }());
}));
