/**
 * @license Highcharts JS v7.1.3 (2019-08-14)
 *
 * (c) 2014-2019 Highsoft AS
 * Authors: Jon Arild Nygard / Oystein Moseng
 *
 * 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('highcharts/modules/treemap', ['highcharts'], function (Highcharts) {
            factory(Highcharts);
            factory.Highcharts = Highcharts;
            return factory;
        });
    } else {
        factory(typeof Highcharts !== 'undefined' ? Highcharts : undefined);
    }
}(function (Highcharts) {
    var _modules = Highcharts ? Highcharts._modules : {};
    function _registerModule(obj, path, args, fn) {
        if (!obj.hasOwnProperty(path)) {
            obj[path] = fn.apply(null, args);
        }
    }
    _registerModule(_modules, 'mixins/tree-series.js', [_modules['parts/Globals.js'], _modules['parts/Utilities.js']], function (H, U) {
        /* *
         *
         *  !!!!!!! SOURCE GETS TRANSPILED BY TYPESCRIPT. EDIT TS FILE ONLY. !!!!!!!
         *
         * */
        var isArray = U.isArray, isNumber = U.isNumber, isObject = U.isObject;
        var extend = H.extend, isBoolean = function (x) {
            return typeof x === 'boolean';
        }, isFn = function (x) {
            return typeof x === 'function';
        }, merge = H.merge, pick = H.pick;
        /* eslint-disable valid-jsdoc */
        /**
         * @todo Combine buildTree and buildNode with setTreeValues
         * @todo Remove logic from Treemap and make it utilize this mixin.
         * @private
         */
        var setTreeValues = function setTreeValues(tree, options) {
            var before = options.before, idRoot = options.idRoot, mapIdToNode = options.mapIdToNode, nodeRoot = mapIdToNode[idRoot], levelIsConstant = (isBoolean(options.levelIsConstant) ?
                options.levelIsConstant :
                true), points = options.points, point = points[tree.i], optionsPoint = point && point.options || {}, childrenTotal = 0, children = [], value;
            extend(tree, {
                levelDynamic: tree.level - (levelIsConstant ? 0 : nodeRoot.level),
                name: pick(point && point.name, ''),
                visible: (idRoot === tree.id ||
                    (isBoolean(options.visible) ? options.visible : false))
            });
            if (isFn(before)) {
                tree = before(tree, options);
            }
            // First give the children some values
            tree.children.forEach(function (child, i) {
                var newOptions = extend({}, options);
                extend(newOptions, {
                    index: i,
                    siblings: tree.children.length,
                    visible: tree.visible
                });
                child = setTreeValues(child, newOptions);
                children.push(child);
                if (child.visible) {
                    childrenTotal += child.val;
                }
            });
            tree.visible = childrenTotal > 0 || tree.visible;
            // Set the values
            value = pick(optionsPoint.value, childrenTotal);
            extend(tree, {
                children: children,
                childrenTotal: childrenTotal,
                isLeaf: tree.visible && !childrenTotal,
                val: value
            });
            return tree;
        };
        /**
         * @private
         */
        var getColor = function getColor(node, options) {
            var index = options.index, mapOptionsToLevel = options.mapOptionsToLevel, parentColor = options.parentColor, parentColorIndex = options.parentColorIndex, series = options.series, colors = options.colors, siblings = options.siblings, points = series.points, getColorByPoint, chartOptionsChart = series.chart.options.chart, point, level, colorByPoint, colorIndexByPoint, color, colorIndex;
            /**
             * @private
             */
            function variation(color) {
                var colorVariation = level && level.colorVariation;
                if (colorVariation) {
                    if (colorVariation.key === 'brightness') {
                        return H.color(color).brighten(colorVariation.to * (index / siblings)).get();
                    }
                }
                return color;
            }
            if (node) {
                point = points[node.i];
                level = mapOptionsToLevel[node.level] || {};
                getColorByPoint = point && level.colorByPoint;
                if (getColorByPoint) {
                    colorIndexByPoint = point.index % (colors ?
                        colors.length :
                        chartOptionsChart.colorCount);
                    colorByPoint = colors && colors[colorIndexByPoint];
                }
                // Select either point color, level color or inherited color.
                if (!series.chart.styledMode) {
                    color = pick(point && point.options.color, level && level.color, colorByPoint, parentColor && variation(parentColor), series.color);
                }
                colorIndex = pick(point && point.options.colorIndex, level && level.colorIndex, colorIndexByPoint, parentColorIndex, options.colorIndex);
            }
            return {
                color: color,
                colorIndex: colorIndex
            };
        };
        /**
         * Creates a map from level number to its given options.
         *
         * @private
         * @function getLevelOptions
         * @param {object} params
         *        Object containing parameters.
         *        - `defaults` Object containing default options. The default options
         *           are merged with the userOptions to get the final options for a
         *           specific level.
         *        - `from` The lowest level number.
         *        - `levels` User options from series.levels.
         *        - `to` The highest level number.
         * @return {Highcharts.Dictionary<object>|null}
         *         Returns a map from level number to its given options.
         */
        var getLevelOptions = function getLevelOptions(params) {
            var result = null, defaults, converted, i, from, to, levels;
            if (isObject(params)) {
                result = {};
                from = isNumber(params.from) ? params.from : 1;
                levels = params.levels;
                converted = {};
                defaults = isObject(params.defaults) ? params.defaults : {};
                if (isArray(levels)) {
                    converted = levels.reduce(function (obj, item) {
                        var level, levelIsConstant, options;
                        if (isObject(item) && isNumber(item.level)) {
                            options = merge({}, item);
                            levelIsConstant = (isBoolean(options.levelIsConstant) ?
                                options.levelIsConstant :
                                defaults.levelIsConstant);
                            // Delete redundant properties.
                            delete options.levelIsConstant;
                            delete options.level;
                            // Calculate which level these options apply to.
                            level = item.level + (levelIsConstant ? 0 : from - 1);
                            if (isObject(obj[level])) {
                                extend(obj[level], options);
                            }
                            else {
                                obj[level] = options;
                            }
                        }
                        return obj;
                    }, {});
                }
                to = isNumber(params.to) ? params.to : 1;
                for (i = 0; i <= to; i++) {
                    result[i] = merge({}, defaults, isObject(converted[i]) ? converted[i] : {});
                }
            }
            return result;
        };
        /**
         * Update the rootId property on the series. Also makes sure that it is
         * accessible to exporting.
         *
         * @private
         * @function updateRootId
         *
         * @param {object} series
         *        The series to operate on.
         *
         * @return {string}
         *         Returns the resulting rootId after update.
         */
        var updateRootId = function (series) {
            var rootId, options;
            if (isObject(series)) {
                // Get the series options.
                options = isObject(series.options) ? series.options : {};
                // Calculate the rootId.
                rootId = pick(series.rootNode, options.rootId, '');
                // Set rootId on series.userOptions to pick it up in exporting.
                if (isObject(series.userOptions)) {
                    series.userOptions.rootId = rootId;
                }
                // Set rootId on series to pick it up on next update.
                series.rootNode = rootId;
            }
            return rootId;
        };
        var result = {
            getColor: getColor,
            getLevelOptions: getLevelOptions,
            setTreeValues: setTreeValues,
            updateRootId: updateRootId
        };

        return result;
    });
    _registerModule(_modules, 'mixins/draw-point.js', [], function () {
        /* *
         *
         *  !!!!!!! SOURCE GETS TRANSPILED BY TYPESCRIPT. EDIT TS FILE ONLY. !!!!!!!
         *
         * */
        var isFn = function (x) {
            return typeof x === 'function';
        };
        /* eslint-disable no-invalid-this, valid-jsdoc */
        /**
         * Handles the drawing of a component.
         * Can be used for any type of component that reserves the graphic property, and
         * provides a shouldDraw on its context.
         *
         * @private
         * @function draw
         * @param {DrawPointParams} params
         *        Parameters.
         *
         * @todo add type checking.
         * @todo export this function to enable usage
         */
        var draw = function draw(params) {
            var component = this, graphic = component.graphic, animatableAttribs = params.animatableAttribs, onComplete = params.onComplete, css = params.css, renderer = params.renderer;
            if (component.shouldDraw()) {
                if (!graphic) {
                    component.graphic = graphic =
                        renderer[params.shapeType](params.shapeArgs)
                            .add(params.group);
                }
                graphic
                    .css(css)
                    .attr(params.attribs)
                    .animate(animatableAttribs, params.isNew ? false : undefined, onComplete);
            }
            else if (graphic) {
                var destroy = function () {
                    component.graphic = graphic = graphic.destroy();
                    if (isFn(onComplete)) {
                        onComplete();
                    }
                };
                // animate only runs complete callback if something was animated.
                if (Object.keys(animatableAttribs).length) {
                    graphic.animate(animatableAttribs, undefined, function () {
                        destroy();
                    });
                }
                else {
                    destroy();
                }
            }
        };
        /**
         * An extended version of draw customized for points.
         * It calls additional methods that is expected when rendering a point.
         *
         * @param {Highcharts.Dictionary<any>} params Parameters
         */
        var drawPoint = function drawPoint(params) {
            var point = this, attribs = params.attribs = params.attribs || {};
            // Assigning class in dot notation does go well in IE8
            // eslint-disable-next-line dot-notation
            attribs['class'] = point.getClassName();
            // Call draw to render component
            draw.call(point, params);
        };

        return drawPoint;
    });
    _registerModule(_modules, 'modules/treemap.src.js', [_modules['parts/Globals.js'], _modules['mixins/tree-series.js'], _modules['mixins/draw-point.js'], _modules['parts/Utilities.js']], function (H, mixinTreeSeries, drawPoint, U) {
        /* *
         * (c) 2014-2019 Highsoft AS
         *
         * Authors: Jon Arild Nygard / Oystein Moseng
         *
         * License: www.highcharts.com/license
         */



        var defined = U.defined,
            isArray = U.isArray,
            isNumber = U.isNumber,
            isObject = U.isObject,
            isString = U.isString,
            objectEach = U.objectEach;


        var seriesType = H.seriesType,
            seriesTypes = H.seriesTypes,
            addEvent = H.addEvent,
            merge = H.merge,
            extend = H.extend,
            error = H.error,
            noop = H.noop,
            fireEvent = H.fireEvent,
            getColor = mixinTreeSeries.getColor,
            getLevelOptions = mixinTreeSeries.getLevelOptions,
            isBoolean = function (x) {
                return typeof x === 'boolean';
            },
            pick = H.pick,
            Series = H.Series,
            stableSort = H.stableSort,
            color = H.Color,
            eachObject = function (list, func, context) {
                context = context || this;
                objectEach(list, function (val, key) {
                    func.call(context, val, key, list);
                });
            },
            // @todo find correct name for this function.
            // @todo Similar to reduce, this function is likely redundant
            recursive = function (item, func, context) {
                var next;

                context = context || this;
                next = func.call(context, item);
                if (next !== false) {
                    recursive(next, func, context);
                }
            },
            updateRootId = mixinTreeSeries.updateRootId;

        /**
         * @private
         * @class
         * @name Highcharts.seriesTypes.treemap
         *
         * @augments Highcharts.Series
         */
        seriesType(
            'treemap',
            'scatter'

            /**
             * A treemap displays hierarchical data using nested rectangles. The data
             * can be laid out in varying ways depending on options.
             *
             * @sample highcharts/demo/treemap-large-dataset/
             *         Treemap
             *
             * @extends      plotOptions.scatter
             * @excluding    marker, jitter
             * @product      highcharts
             * @optionparent plotOptions.treemap
             */
            , {

                /**
                 * When enabled the user can click on a point which is a parent and
                 * zoom in on its children. Deprecated and replaced by
                 * [allowTraversingTree](#plotOptions.treemap.allowTraversingTree).
                 *
                 * @sample {highcharts} highcharts/plotoptions/treemap-allowdrilltonode/
                 *         Enabled
                 *
                 * @deprecated
                 * @type      {boolean}
                 * @default   false
                 * @since     4.1.0
                 * @product   highcharts
                 * @apioption plotOptions.treemap.allowDrillToNode
                 */

                /**
                 * When enabled the user can click on a point which is a parent and
                 * zoom in on its children.
                 *
                 * @sample {highcharts} highcharts/plotoptions/treemap-allowtraversingtree/
                 *         Enabled
                 *
                 * @since     7.0.3
                 * @product   highcharts
                 */
                allowTraversingTree: false,

                animationLimit: 250,
                /**
                 * When the series contains less points than the crop threshold, all
                 * points are drawn, event if the points fall outside the visible plot
                 * area at the current zoom. The advantage of drawing all points
                 * (including markers and columns), is that animation is performed on
                 * updates. On the other hand, when the series contains more points than
                 * the crop threshold, the series data is cropped to only contain points
                 * that fall within the plot area. The advantage of cropping away
                 * invisible points is to increase performance on large series.
                 *
                 * @type      {number}
                 * @default   300
                 * @since     4.1.0
                 * @product   highcharts
                 * @apioption plotOptions.treemap.cropThreshold
                 */

                /**
                 * Fires on a request for change of root node for the tree, before the
                 * update is made. An event object is passed to the function, containing
                 * additional properties `newRootId`, `previousRootId`, `redraw` and
                 * `trigger`.
                 *
                 * @type {function}
                 * @default undefined
                 * @sample {highcharts} highcharts/plotoptions/treemap-events-setrootnode/
                 *         Alert update information on setRootNode event.
                 * @since 7.0.3
                 * @product highcharts
                 * @apioption plotOptions.treemap.events.setRootNode
                 */

                /**
                 * This option decides if the user can interact with the parent nodes
                 * or just the leaf nodes. When this option is undefined, it will be
                 * true by default. However when allowTraversingTree is true, then it
                 * will be false by default.
                 *
                 * @sample {highcharts} highcharts/plotoptions/treemap-interactbyleaf-false/
                 *         False
                 * @sample {highcharts} highcharts/plotoptions/treemap-interactbyleaf-true-and-allowtraversingtree/
                 *         InteractByLeaf and allowTraversingTree is true
                 *
                 * @type      {boolean}
                 * @since     4.1.2
                 * @product   highcharts
                 * @apioption plotOptions.treemap.interactByLeaf
                 */

                /**
                 * The sort index of the point inside the treemap level.
                 *
                 * @sample {highcharts} highcharts/plotoptions/treemap-sortindex/
                 *         Sort by years
                 *
                 * @type      {number}
                 * @since     4.1.10
                 * @product   highcharts
                 * @apioption plotOptions.treemap.sortIndex
                 */

                /**
                 * When using automatic point colors pulled from the `options.colors`
                 * collection, this option determines whether the chart should receive
                 * one color per series or one color per point.
                 *
                 * @see [series colors](#plotOptions.treemap.colors)
                 *
                 * @type      {boolean}
                 * @default   false
                 * @since     2.0
                 * @product   highcharts
                 * @apioption plotOptions.treemap.colorByPoint
                 */

                /**
                 * A series specific or series type specific color set to apply instead
                 * of the global [colors](#colors) when
                 * [colorByPoint](#plotOptions.treemap.colorByPoint) is true.
                 *
                 * @type      {Array<Highcharts.ColorString|Highcharts.GradientColorObject|Highcharts.PatternObject>}
                 * @since     3.0
                 * @product   highcharts
                 * @apioption plotOptions.treemap.colors
                 */

                /**
                 * Whether to display this series type or specific series item in the
                 * legend.
                 */
                showInLegend: false,

                /**
                 * @ignore-option
                 */
                marker: false,

                colorByPoint: false,

                /**
                 * @since 4.1.0
                 */
                dataLabels: {
                    /** @ignore-option */
                    defer: false,
                    /** @ignore-option */
                    enabled: true,
                    /** @ignore-option */
                    formatter: function () {
                        var point = this && this.point ? this.point : {},
                            name = isString(point.name) ? point.name : '';

                        return name;
                    },
                    /** @ignore-option */
                    inside: true,
                    /** @ignore-option */
                    verticalAlign: 'middle'
                },

                tooltip: {
                    headerFormat: '',
                    pointFormat: '<b>{point.name}</b>: {point.value}<br/>'
                },

                /**
                 * Whether to ignore hidden points when the layout algorithm runs.
                 * If `false`, hidden points will leave open spaces.
                 *
                 * @since 5.0.8
                 */
                ignoreHiddenPoint: true,

                /**
                 * This option decides which algorithm is used for setting position
                 * and dimensions of the points.
                 *
                 * @see [How to write your own algorithm](https://www.highcharts.com/docs/chart-and-series-types/treemap)
                 *
                 * @sample {highcharts} highcharts/plotoptions/treemap-layoutalgorithm-sliceanddice/
                 *         SliceAndDice by default
                 * @sample {highcharts} highcharts/plotoptions/treemap-layoutalgorithm-stripes/
                 *         Stripes
                 * @sample {highcharts} highcharts/plotoptions/treemap-layoutalgorithm-squarified/
                 *         Squarified
                 * @sample {highcharts} highcharts/plotoptions/treemap-layoutalgorithm-strip/
                 *         Strip
                 *
                 * @since      4.1.0
                 * @validvalue ["sliceAndDice", "stripes", "squarified", "strip"]
                 */
                layoutAlgorithm: 'sliceAndDice',

                /**
                 * Defines which direction the layout algorithm will start drawing.
                 *
                 * @since       4.1.0
                 * @validvalue ["vertical", "horizontal"]
                 */
                layoutStartingDirection: 'vertical',

                /**
                 * Enabling this option will make the treemap alternate the drawing
                 * direction between vertical and horizontal. The next levels starting
                 * direction will always be the opposite of the previous.
                 *
                 * @sample {highcharts} highcharts/plotoptions/treemap-alternatestartingdirection-true/
                 *         Enabled
                 *
                 * @since 4.1.0
                 */
                alternateStartingDirection: false,

                /**
                 * Used together with the levels and allowTraversingTree options. When
                 * set to false the first level visible to be level one, which is
                 * dynamic when traversing the tree. Otherwise the level will be the
                 * same as the tree structure.
                 *
                 * @since 4.1.0
                 */
                levelIsConstant: true,
                /**
                 * Options for the button appearing when drilling down in a treemap.
                 * Deprecated and replaced by
                 * [traverseUpButton](#plotOptions.treemap.traverseUpButton).
                 *
                 * @deprecated
                 */
                drillUpButton: {

                    /**
                     * The position of the button.
                     *
                     * @deprecated
                     */
                    position: {

                        /**
                         * Vertical alignment of the button.
                         *
                         * @deprecated
                         * @type      {Highcharts.VerticalAlignValue}
                         * @default   top
                         * @product   highcharts
                         * @apioption plotOptions.treemap.drillUpButton.position.verticalAlign
                         */

                        /**
                         * Horizontal alignment of the button.
                         *
                         * @deprecated
                         * @type {Highcharts.AlignValue}
                         */
                        align: 'right',

                        /**
                         * Horizontal offset of the button.
                         *
                         * @deprecated
                         */
                        x: -10,

                        /**
                         * Vertical offset of the button.
                         *
                         * @deprecated
                         */
                        y: 10
                    }
                },

                /**
                 * Options for the button appearing when traversing down in a treemap.
                 */
                traverseUpButton: {

                    /**
                     * The position of the button.
                     */
                    position: {

                        /**
                         * Vertical alignment of the button.
                         *
                         * @type      {Highcharts.VerticalAlignValue}
                         * @default   top
                         * @product   highcharts
                         * @apioption plotOptions.treemap.traverseUpButton.position.verticalAlign
                         */

                        /**
                         * Horizontal alignment of the button.
                         *
                         * @type {Highcharts.AlignValue}
                         */
                        align: 'right',

                        /**
                         * Horizontal offset of the button.
                         */
                        x: -10,

                        /**
                         * Vertical offset of the button.
                         */
                        y: 10
                    }
                },


                /**
                 * Set options on specific levels. Takes precedence over series options,
                 * but not point options.
                 *
                 * @sample {highcharts} highcharts/plotoptions/treemap-levels/
                 *         Styling dataLabels and borders
                 * @sample {highcharts} highcharts/demo/treemap-with-levels/
                 *         Different layoutAlgorithm
                 *
                 * @type      {Array<*>}
                 * @since     4.1.0
                 * @product   highcharts
                 * @apioption plotOptions.treemap.levels
                 */

                /**
                 * Can set a `borderColor` on all points which lies on the same level.
                 *
                 * @type      {Highcharts.ColorString}
                 * @since     4.1.0
                 * @product   highcharts
                 * @apioption plotOptions.treemap.levels.borderColor
                 */

                /**
                 * Set the dash style of the border of all the point which lies on the
                 * level. See <a href"#plotoptions.scatter.dashstyle">
                 * plotOptions.scatter.dashStyle</a> for possible options.
                 *
                 * @type      {string}
                 * @since     4.1.0
                 * @product   highcharts
                 * @apioption plotOptions.treemap.levels.borderDashStyle
                 */

                /**
                 * Can set the borderWidth on all points which lies on the same level.
                 *
                 * @type      {number}
                 * @since     4.1.0
                 * @product   highcharts
                 * @apioption plotOptions.treemap.levels.borderWidth
                 */

                /**
                 * Can set a color on all points which lies on the same level.
                 *
                 * @type      {Highcharts.ColorString|Highcharts.GradientColorObject|Highcharts.PatternObject}
                 * @since     4.1.0
                 * @product   highcharts
                 * @apioption plotOptions.treemap.levels.color
                 */

                /**
                 * A configuration object to define how the color of a child varies from
                 * the parent's color. The variation is distributed among the children
                 * of node. For example when setting brightness, the brightness change
                 * will range from the parent's original brightness on the first child,
                 * to the amount set in the `to` setting on the last node. This allows a
                 * gradient-like color scheme that sets children out from each other
                 * while highlighting the grouping on treemaps and sectors on sunburst
                 * charts.
                 *
                 * @sample highcharts/demo/sunburst/
                 *         Sunburst with color variation
                 *
                 * @since     6.0.0
                 * @product   highcharts
                 * @apioption plotOptions.treemap.levels.colorVariation
                 */

                /**
                 * The key of a color variation. Currently supports `brightness` only.
                 *
                 * @type       {string}
                 * @since      6.0.0
                 * @product    highcharts
                 * @validvalue ["brightness"]
                 * @apioption  plotOptions.treemap.levels.colorVariation.key
                 */

                /**
                 * The ending value of a color variation. The last sibling will receive
                 * this value.
                 *
                 * @type      {number}
                 * @since     6.0.0
                 * @product   highcharts
                 * @apioption plotOptions.treemap.levels.colorVariation.to
                 */

                /**
                 * Can set the options of dataLabels on each point which lies on the
                 * level.
                 * [plotOptions.treemap.dataLabels](#plotOptions.treemap.dataLabels) for
                 * possible values.
                 *
                 * @type      {object}
                 * @since     4.1.0
                 * @product   highcharts
                 * @apioption plotOptions.treemap.levels.dataLabels
                 */

                /**
                 * Can set the layoutAlgorithm option on a specific level.
                 *
                 * @type       {string}
                 * @since      4.1.0
                 * @product    highcharts
                 * @validvalue ["sliceAndDice", "stripes", "squarified", "strip"]
                 * @apioption  plotOptions.treemap.levels.layoutAlgorithm
                 */

                /**
                 * Can set the layoutStartingDirection option on a specific level.
                 *
                 * @type       {string}
                 * @since      4.1.0
                 * @product    highcharts
                 * @validvalue ["vertical", "horizontal"]
                 * @apioption  plotOptions.treemap.levels.layoutStartingDirection
                 */

                /**
                 * Decides which level takes effect from the options set in the levels
                 * object.
                 *
                 * @sample {highcharts} highcharts/plotoptions/treemap-levels/
                 *         Styling of both levels
                 *
                 * @type      {number}
                 * @since     4.1.0
                 * @product   highcharts
                 * @apioption plotOptions.treemap.levels.level
                 */


                // Presentational options

                /**
                 * The color of the border surrounding each tree map item.
                 *
                 * @type {Highcharts.ColorString}
                 */
                borderColor: '#e6e6e6',

                /**
                 * The width of the border surrounding each tree map item.
                 */
                borderWidth: 1,

                /**
                 * The opacity of a point in treemap. When a point has children, the
                 * visibility of the children is determined by the opacity.
                 *
                 * @since 4.2.4
                 */
                opacity: 0.15,

                /**
                 * A wrapper object for all the series options in specific states.
                 *
                 * @extends plotOptions.heatmap.states
                 */
                states: {

                    /**
                     * Options for the hovered series
                     *
                     * @extends   plotOptions.heatmap.states.hover
                     * @excluding halo
                     */
                    hover: {

                        /**
                         * The border color for the hovered state.
                         */
                        borderColor: '#999999',

                        /**
                         * Brightness for the hovered point. Defaults to 0 if the
                         * heatmap series is loaded first, otherwise 0.1.
                         *
                         * @type    {number}
                         * @default undefined
                         */
                        brightness: seriesTypes.heatmap ? 0 : 0.1,

                        /**
                         * @extends plotOptions.heatmap.states.hover.halo
                         */
                        halo: false,

                        /**
                         * The opacity of a point in treemap. When a point has children,
                         * the visibility of the children is determined by the opacity.
                         *
                         * @since 4.2.4
                         */
                        opacity: 0.75,

                        /**
                         * The shadow option for hovered state.
                         */
                        shadow: false
                    }
                }


                // Prototype members
            }, {
                pointArrayMap: ['value'],
                directTouch: true,
                optionalAxis: 'colorAxis',
                getSymbol: noop,
                parallelArrays: ['x', 'y', 'value', 'colorValue'],
                colorKey: 'colorValue', // Point color option key
                trackerGroups: ['group', 'dataLabelsGroup'],
                /**
                 * Creates an object map from parent id to childrens index.
                 *
                 * @private
                 * @function Highcharts.Series#getListOfParents
                 *
                 * @param {Highcharts.SeriesTreemapDataOptions} data
                 *        List of points set in options.
                 *
                 * @param {Array<string>} existingIds
                 *        List of all point ids.
                 *
                 * @return {object}
                 *         Map from parent id to children index in data.
                 */
                getListOfParents: function (data, existingIds) {
                    var arr = isArray(data) ? data : [],
                        ids = isArray(existingIds) ? existingIds : [],
                        listOfParents = arr.reduce(function (prev, curr, i) {
                            var parent = pick(curr.parent, '');

                            if (prev[parent] === undefined) {
                                prev[parent] = [];
                            }
                            prev[parent].push(i);
                            return prev;
                        }, {
                            '': [] // Root of tree
                        });

                    // If parent does not exist, hoist parent to root of tree.
                    eachObject(listOfParents, function (children, parent, list) {
                        if ((parent !== '') && (ids.indexOf(parent) === -1)) {
                            children.forEach(function (child) {
                                list[''].push(child);
                            });
                            delete list[parent];
                        }
                    });
                    return listOfParents;
                },
                // Creates a tree structured object from the series points
                getTree: function () {
                    var series = this,
                        allIds = this.data.map(function (d) {
                            return d.id;
                        }),
                        parentList = series.getListOfParents(this.data, allIds);

                    series.nodeMap = [];
                    return series.buildNode('', -1, 0, parentList, null);
                },
                // Define hasData function for non-cartesian series.
                // Returns true if the series has points at all.
                hasData: function () {
                    return !!this.processedXData.length; // != 0
                },
                init: function (chart, options) {
                    var series = this,
                        colorSeriesMixin = H.colorSeriesMixin;

                    // If color series logic is loaded, add some properties
                    if (H.colorSeriesMixin) {
                        this.translateColors = colorSeriesMixin.translateColors;
                        this.colorAttribs = colorSeriesMixin.colorAttribs;
                        this.axisTypes = colorSeriesMixin.axisTypes;
                    }

                    // Handle deprecated options.
                    addEvent(series, 'setOptions', function (event) {
                        var options = event.userOptions;

                        if (
                            defined(options.allowDrillToNode) &&
                            !defined(options.allowTraversingTree)
                        ) {
                            options.allowTraversingTree = options.allowDrillToNode;
                            delete options.allowDrillToNode;
                        }

                        if (
                            defined(options.drillUpButton) &&
                            !defined(options.traverseUpButton)
                        ) {
                            options.traverseUpButton = options.drillUpButton;
                            delete options.drillUpButton;
                        }
                    });

                    Series.prototype.init.call(series, chart, options);

                    if (series.options.allowTraversingTree) {
                        addEvent(series, 'click', series.onClickDrillToNode);
                    }
                },
                buildNode: function (id, i, level, list, parent) {
                    var series = this,
                        children = [],
                        point = series.points[i],
                        height = 0,
                        node,
                        child;

                    // Actions
                    ((list[id] || [])).forEach(function (i) {
                        child = series.buildNode(
                            series.points[i].id,
                            i,
                            (level + 1),
                            list,
                            id
                        );
                        height = Math.max(child.height + 1, height);
                        children.push(child);
                    });
                    node = {
                        id: id,
                        i: i,
                        children: children,
                        height: height,
                        level: level,
                        parent: parent,
                        visible: false // @todo move this to better location
                    };
                    series.nodeMap[node.id] = node;
                    if (point) {
                        point.node = node;
                    }
                    return node;
                },
                setTreeValues: function (tree) {
                    var series = this,
                        options = series.options,
                        idRoot = series.rootNode,
                        mapIdToNode = series.nodeMap,
                        nodeRoot = mapIdToNode[idRoot],
                        levelIsConstant = (
                            isBoolean(options.levelIsConstant) ?
                                options.levelIsConstant :
                                true
                        ),
                        childrenTotal = 0,
                        children = [],
                        val,
                        point = series.points[tree.i];

                    // First give the children some values
                    tree.children.forEach(function (child) {
                        child = series.setTreeValues(child);
                        children.push(child);
                        if (!child.ignore) {
                            childrenTotal += child.val;
                        }
                    });
                    // Sort the children
                    stableSort(children, function (a, b) {
                        return a.sortIndex - b.sortIndex;
                    });
                    // Set the values
                    val = pick(point && point.options.value, childrenTotal);
                    if (point) {
                        point.value = val;
                    }
                    extend(tree, {
                        children: children,
                        childrenTotal: childrenTotal,
                        // Ignore this node if point is not visible
                        ignore: !(pick(point && point.visible, true) && (val > 0)),
                        isLeaf: tree.visible && !childrenTotal,
                        levelDynamic: (
                            tree.level - (levelIsConstant ? 0 : nodeRoot.level)
                        ),
                        name: pick(point && point.name, ''),
                        sortIndex: pick(point && point.sortIndex, -val),
                        val: val
                    });
                    return tree;
                },
                /**
                 * Recursive function which calculates the area for all children of a
                 * node.
                 *
                 * @private
                 * @function Highcharts.Series#calculateChildrenAreas
                 *
                 * @param {object} node
                 *        The node which is parent to the children.
                 *
                 * @param {object} area
                 *        The rectangular area of the parent.
                 */
                calculateChildrenAreas: function (parent, area) {
                    var series = this,
                        options = series.options,
                        mapOptionsToLevel = series.mapOptionsToLevel,
                        level = mapOptionsToLevel[parent.level + 1],
                        algorithm = pick(
                            (
                                series[level &&
                            level.layoutAlgorithm] &&
                            level.layoutAlgorithm
                            ),
                            options.layoutAlgorithm
                        ),
                        alternate = options.alternateStartingDirection,
                        childrenValues = [],
                        children;

                    // Collect all children which should be included
                    children = parent.children.filter(function (n) {
                        return !n.ignore;
                    });

                    if (level && level.layoutStartingDirection) {
                        area.direction = level.layoutStartingDirection === 'vertical' ?
                            0 :
                            1;
                    }
                    childrenValues = series[algorithm](area, children);
                    children.forEach(function (child, index) {
                        var values = childrenValues[index];

                        child.values = merge(values, {
                            val: child.childrenTotal,
                            direction: (alternate ? 1 - area.direction : area.direction)
                        });
                        child.pointValues = merge(values, {
                            x: (values.x / series.axisRatio),
                            width: (values.width / series.axisRatio)
                        });
                        // If node has children, then call method recursively
                        if (child.children.length) {
                            series.calculateChildrenAreas(child, child.values);
                        }
                    });
                },
                setPointValues: function () {
                    var series = this,
                        xAxis = series.xAxis,
                        yAxis = series.yAxis;

                    series.points.forEach(function (point) {
                        var node = point.node,
                            values = node.pointValues,
                            x1,
                            x2,
                            y1,
                            y2,
                            crispCorr = 0;

                        // Get the crisp correction in classic mode. For this to work in
                        // styled mode, we would need to first add the shape (without x,
                        // y, width and height), then read the rendered stroke width
                        // using point.graphic.strokeWidth(), then modify and apply the
                        // shapeArgs. This applies also to column series, but the
                        // downside is performance and code complexity.
                        if (!series.chart.styledMode) {
                            crispCorr = (
                                (series.pointAttribs(point)['stroke-width'] || 0) % 2
                            ) / 2;
                        }

                        // Points which is ignored, have no values.
                        if (values && node.visible) {
                            x1 = Math.round(
                                xAxis.translate(values.x, 0, 0, 0, 1)
                            ) - crispCorr;
                            x2 = Math.round(
                                xAxis.translate(values.x + values.width, 0, 0, 0, 1)
                            ) - crispCorr;
                            y1 = Math.round(
                                yAxis.translate(values.y, 0, 0, 0, 1)
                            ) - crispCorr;
                            y2 = Math.round(
                                yAxis.translate(values.y + values.height, 0, 0, 0, 1)
                            ) - crispCorr;
                            // Set point values
                            point.shapeArgs = {
                                x: Math.min(x1, x2),
                                y: Math.min(y1, y2),
                                width: Math.abs(x2 - x1),
                                height: Math.abs(y2 - y1)
                            };
                            point.plotX =
                                point.shapeArgs.x + (point.shapeArgs.width / 2);
                            point.plotY =
                                point.shapeArgs.y + (point.shapeArgs.height / 2);
                        } else {
                        // Reset visibility
                            delete point.plotX;
                            delete point.plotY;
                        }
                    });
                },

                // Set the node's color recursively, from the parent down.
                setColorRecursive: function (
                    node,
                    parentColor,
                    colorIndex,
                    index,
                    siblings
                ) {
                    var series = this,
                        chart = series && series.chart,
                        colors = chart && chart.options && chart.options.colors,
                        colorInfo,
                        point;

                    if (node) {
                        colorInfo = getColor(node, {
                            colors: colors,
                            index: index,
                            mapOptionsToLevel: series.mapOptionsToLevel,
                            parentColor: parentColor,
                            parentColorIndex: colorIndex,
                            series: series,
                            siblings: siblings
                        });

                        point = series.points[node.i];
                        if (point) {
                            point.color = colorInfo.color;
                            point.colorIndex = colorInfo.colorIndex;
                        }

                        // Do it all again with the children
                        (node.children || []).forEach(function (child, i) {
                            series.setColorRecursive(
                                child,
                                colorInfo.color,
                                colorInfo.colorIndex,
                                i,
                                node.children.length
                            );
                        });
                    }
                },
                algorithmGroup: function (h, w, d, p) {
                    this.height = h;
                    this.width = w;
                    this.plot = p;
                    this.direction = d;
                    this.startDirection = d;
                    this.total = 0;
                    this.nW = 0;
                    this.lW = 0;
                    this.nH = 0;
                    this.lH = 0;
                    this.elArr = [];
                    this.lP = {
                        total: 0,
                        lH: 0,
                        nH: 0,
                        lW: 0,
                        nW: 0,
                        nR: 0,
                        lR: 0,
                        aspectRatio: function (w, h) {
                            return Math.max((w / h), (h / w));
                        }
                    };
                    this.addElement = function (el) {
                        this.lP.total = this.elArr[this.elArr.length - 1];
                        this.total = this.total + el;
                        if (this.direction === 0) {
                        // Calculate last point old aspect ratio
                            this.lW = this.nW;
                            this.lP.lH = this.lP.total / this.lW;
                            this.lP.lR = this.lP.aspectRatio(this.lW, this.lP.lH);
                            // Calculate last point new aspect ratio
                            this.nW = this.total / this.height;
                            this.lP.nH = this.lP.total / this.nW;
                            this.lP.nR = this.lP.aspectRatio(this.nW, this.lP.nH);
                        } else {
                        // Calculate last point old aspect ratio
                            this.lH = this.nH;
                            this.lP.lW = this.lP.total / this.lH;
                            this.lP.lR = this.lP.aspectRatio(this.lP.lW, this.lH);
                            // Calculate last point new aspect ratio
                            this.nH = this.total / this.width;
                            this.lP.nW = this.lP.total / this.nH;
                            this.lP.nR = this.lP.aspectRatio(this.lP.nW, this.nH);
                        }
                        this.elArr.push(el);
                    };
                    this.reset = function () {
                        this.nW = 0;
                        this.lW = 0;
                        this.elArr = [];
                        this.total = 0;
                    };
                },
                algorithmCalcPoints: function (
                    directionChange, last, group, childrenArea
                ) {
                    var pX,
                        pY,
                        pW,
                        pH,
                        gW = group.lW,
                        gH = group.lH,
                        plot = group.plot,
                        keep,
                        i = 0,
                        end = group.elArr.length - 1;

                    if (last) {
                        gW = group.nW;
                        gH = group.nH;
                    } else {
                        keep = group.elArr[group.elArr.length - 1];
                    }
                    group.elArr.forEach(function (p) {
                        if (last || (i < end)) {
                            if (group.direction === 0) {
                                pX = plot.x;
                                pY = plot.y;
                                pW = gW;
                                pH = p / pW;
                            } else {
                                pX = plot.x;
                                pY = plot.y;
                                pH = gH;
                                pW = p / pH;
                            }
                            childrenArea.push({
                                x: pX,
                                y: pY,
                                width: pW,
                                height: H.correctFloat(pH)
                            });
                            if (group.direction === 0) {
                                plot.y = plot.y + pH;
                            } else {
                                plot.x = plot.x + pW;
                            }
                        }
                        i = i + 1;
                    });
                    // Reset variables
                    group.reset();
                    if (group.direction === 0) {
                        group.width = group.width - gW;
                    } else {
                        group.height = group.height - gH;
                    }
                    plot.y = plot.parent.y + (plot.parent.height - group.height);
                    plot.x = plot.parent.x + (plot.parent.width - group.width);
                    if (directionChange) {
                        group.direction = 1 - group.direction;
                    }
                    // If not last, then add uncalculated element
                    if (!last) {
                        group.addElement(keep);
                    }
                },
                algorithmLowAspectRatio: function (directionChange, parent, children) {
                    var childrenArea = [],
                        series = this,
                        pTot,
                        plot = {
                            x: parent.x,
                            y: parent.y,
                            parent: parent
                        },
                        direction = parent.direction,
                        i = 0,
                        end = children.length - 1,
                        group = new this.algorithmGroup( // eslint-disable-line new-cap
                            parent.height,
                            parent.width,
                            direction,
                            plot
                        );

                    // Loop through and calculate all areas
                    children.forEach(function (child) {
                        pTot =
                            (parent.width * parent.height) * (child.val / parent.val);
                        group.addElement(pTot);
                        if (group.lP.nR > group.lP.lR) {
                            series.algorithmCalcPoints(
                                directionChange,
                                false,
                                group,
                                childrenArea,
                                plot
                            );
                        }
                        // If last child, then calculate all remaining areas
                        if (i === end) {
                            series.algorithmCalcPoints(
                                directionChange,
                                true,
                                group,
                                childrenArea,
                                plot
                            );
                        }
                        i = i + 1;
                    });
                    return childrenArea;
                },
                algorithmFill: function (directionChange, parent, children) {
                    var childrenArea = [],
                        pTot,
                        direction = parent.direction,
                        x = parent.x,
                        y = parent.y,
                        width = parent.width,
                        height = parent.height,
                        pX,
                        pY,
                        pW,
                        pH;

                    children.forEach(function (child) {
                        pTot =
                            (parent.width * parent.height) * (child.val / parent.val);
                        pX = x;
                        pY = y;
                        if (direction === 0) {
                            pH = height;
                            pW = pTot / pH;
                            width = width - pW;
                            x = x + pW;
                        } else {
                            pW = width;
                            pH = pTot / pW;
                            height = height - pH;
                            y = y + pH;
                        }
                        childrenArea.push({
                            x: pX,
                            y: pY,
                            width: pW,
                            height: pH
                        });
                        if (directionChange) {
                            direction = 1 - direction;
                        }
                    });
                    return childrenArea;
                },
                strip: function (parent, children) {
                    return this.algorithmLowAspectRatio(false, parent, children);
                },
                squarified: function (parent, children) {
                    return this.algorithmLowAspectRatio(true, parent, children);
                },
                sliceAndDice: function (parent, children) {
                    return this.algorithmFill(true, parent, children);
                },
                stripes: function (parent, children) {
                    return this.algorithmFill(false, parent, children);
                },
                translate: function () {
                    var series = this,
                        options = series.options,
                        // NOTE: updateRootId modifies series.
                        rootId = updateRootId(series),
                        rootNode,
                        pointValues,
                        seriesArea,
                        tree,
                        val;

                    // Call prototype function
                    Series.prototype.translate.call(series);

                    // @todo Only if series.isDirtyData is true
                    tree = series.tree = series.getTree();
                    rootNode = series.nodeMap[rootId];
                    series.renderTraverseUpButton(rootId);
                    series.mapOptionsToLevel = getLevelOptions({
                        from: rootNode.level + 1,
                        levels: options.levels,
                        to: tree.height,
                        defaults: {
                            levelIsConstant: series.options.levelIsConstant,
                            colorByPoint: options.colorByPoint
                        }
                    });
                    if (
                        rootId !== '' &&
                    (!rootNode || !rootNode.children.length)
                    ) {
                        series.setRootNode('', false);
                        rootId = series.rootNode;
                        rootNode = series.nodeMap[rootId];
                    }
                    // Parents of the root node is by default visible
                    recursive(series.nodeMap[series.rootNode], function (node) {
                        var next = false,
                            p = node.parent;

                        node.visible = true;
                        if (p || p === '') {
                            next = series.nodeMap[p];
                        }
                        return next;
                    });
                    // Children of the root node is by default visible
                    recursive(
                        series.nodeMap[series.rootNode].children,
                        function (children) {
                            var next = false;

                            children.forEach(function (child) {
                                child.visible = true;
                                if (child.children.length) {
                                    next = (next || []).concat(child.children);
                                }
                            });
                            return next;
                        }
                    );
                    series.setTreeValues(tree);

                    // Calculate plotting values.
                    series.axisRatio = (series.xAxis.len / series.yAxis.len);
                    series.nodeMap[''].pointValues = pointValues =
                    { x: 0, y: 0, width: 100, height: 100 };
                    series.nodeMap[''].values = seriesArea = merge(pointValues, {
                        width: (pointValues.width * series.axisRatio),
                        direction: (
                            options.layoutStartingDirection === 'vertical' ? 0 : 1
                        ),
                        val: tree.val
                    });
                    series.calculateChildrenAreas(tree, seriesArea);

                    // Logic for point colors
                    if (series.colorAxis) {
                        series.translateColors();
                    } else if (!options.colorByPoint) {
                        series.setColorRecursive(series.tree);
                    }

                    // Update axis extremes according to the root node.
                    if (options.allowTraversingTree) {
                        val = rootNode.pointValues;
                        series.xAxis.setExtremes(val.x, val.x + val.width, false);
                        series.yAxis.setExtremes(val.y, val.y + val.height, false);
                        series.xAxis.setScale();
                        series.yAxis.setScale();
                    }

                    // Assign values to points.
                    series.setPointValues();
                },
                /**
                 * Extend drawDataLabels with logic to handle custom options related to
                 * the treemap series:
                 *
                 * - Points which is not a leaf node, has dataLabels disabled by
                 *   default.
                 *
                 * - Options set on series.levels is merged in.
                 *
                 * - Width of the dataLabel is set to match the width of the point
                 *   shape.
                 *
                 * @private
                 * @function Highcharts.Series#drawDataLabels
                 */
                drawDataLabels: function () {
                    var series = this,
                        mapOptionsToLevel = series.mapOptionsToLevel,
                        points = series.points.filter(function (n) {
                            return n.node.visible;
                        }),
                        options,
                        level;

                    points.forEach(function (point) {
                        level = mapOptionsToLevel[point.node.level];
                        // Set options to new object to avoid problems with scope
                        options = { style: {} };

                        // If not a leaf, then label should be disabled as default
                        if (!point.node.isLeaf) {
                            options.enabled = false;
                        }

                        // If options for level exists, include them as well
                        if (level && level.dataLabels) {
                            options = merge(options, level.dataLabels);
                            series._hasPointLabels = true;
                        }

                        // Set dataLabel width to the width of the point shape.
                        if (point.shapeArgs) {
                            options.style.width = point.shapeArgs.width;
                            if (point.dataLabel) {
                                point.dataLabel.css({
                                    width: point.shapeArgs.width + 'px'
                                });
                            }
                        }

                        // Merge custom options with point options
                        point.dlOptions = merge(options, point.options.dataLabels);
                    });
                    Series.prototype.drawDataLabels.call(this);
                },

                // Over the alignment method by setting z index
                alignDataLabel: function (point, dataLabel, labelOptions) {
                    var style = labelOptions.style;

                    // #8160: Prevent the label from exceeding the point's
                    // boundaries in treemaps by applying ellipsis overflow.
                    // The issue was happening when datalabel's text contained a
                    // long sequence of characters without a whitespace.
                    if (
                        !defined(style.textOverflow) &&
                        dataLabel.text &&
                        dataLabel.getBBox().width > dataLabel.text.textWidth
                    ) {
                        dataLabel.css({
                            textOverflow: 'ellipsis',
                            // unit (px) is required when useHTML is true
                            width: style.width += 'px'
                        });
                    }

                    seriesTypes.column.prototype.alignDataLabel.apply(this, arguments);
                    if (point.dataLabel) {
                    // point.node.zIndex could be undefined (#6956)
                        point.dataLabel.attr({ zIndex: (point.node.zIndex || 0) + 1 });
                    }
                },

                // Get presentational attributes
                pointAttribs: function (point, state) {
                    var series = this,
                        mapOptionsToLevel = (
                            isObject(series.mapOptionsToLevel) ?
                                series.mapOptionsToLevel :
                                {}
                        ),
                        level = point && mapOptionsToLevel[point.node.level] || {},
                        options = this.options,
                        attr,
                        stateOptions = (state && options.states[state]) || {},
                        className = (point && point.getClassName()) || '',
                        opacity;

                    // Set attributes by precedence. Point trumps level trumps series.
                    // Stroke width uses pick because it can be 0.
                    attr = {
                        'stroke':
                        (point && point.borderColor) ||
                        level.borderColor ||
                        stateOptions.borderColor ||
                        options.borderColor,
                        'stroke-width': pick(
                            point && point.borderWidth,
                            level.borderWidth,
                            stateOptions.borderWidth,
                            options.borderWidth
                        ),
                        'dashstyle':
                        (point && point.borderDashStyle) ||
                        level.borderDashStyle ||
                        stateOptions.borderDashStyle ||
                        options.borderDashStyle,
                        'fill': (point && point.color) || this.color
                    };

                    // Hide levels above the current view
                    if (className.indexOf('highcharts-above-level') !== -1) {
                        attr.fill = 'none';
                        attr['stroke-width'] = 0;

                        // Nodes with children that accept interaction
                    } else if (
                        className.indexOf('highcharts-internal-node-interactive') !== -1
                    ) {
                        opacity = pick(stateOptions.opacity, options.opacity);
                        attr.fill = color(attr.fill).setOpacity(opacity).get();
                        attr.cursor = 'pointer';
                        // Hide nodes that have children
                    } else if (className.indexOf('highcharts-internal-node') !== -1) {
                        attr.fill = 'none';

                    } else if (state) {
                    // Brighten and hoist the hover nodes
                        attr.fill = color(attr.fill)
                            .brighten(stateOptions.brightness)
                            .get();
                    }
                    return attr;
                },

                // Override drawPoints
                drawPoints: function () {
                    var series = this,
                        chart = series.chart,
                        renderer = chart.renderer,
                        points = series.points,
                        styledMode = chart.styledMode,
                        options = series.options,
                        shadow = styledMode ? {} : options.shadow,
                        borderRadius = options.borderRadius,
                        withinAnimationLimit =
                            chart.pointCount < options.animationLimit,
                        allowTraversingTree = options.allowTraversingTree;

                    points.forEach(function (point) {
                        var levelDynamic = point.node.levelDynamic,
                            animate = {},
                            attr = {},
                            css = {},
                            groupKey = 'level-group-' + levelDynamic,
                            hasGraphic = !!point.graphic,
                            shouldAnimate = withinAnimationLimit && hasGraphic,
                            shapeArgs = point.shapeArgs;

                        // Don't bother with calculate styling if the point is not drawn
                        if (point.shouldDraw()) {
                            if (borderRadius) {
                                attr.r = borderRadius;
                            }

                            merge(
                                true, // Extend object
                                // Which object to extend
                                shouldAnimate ? animate : attr,
                                // Add shapeArgs to animate/attr if graphic exists
                                hasGraphic ? shapeArgs : {},
                                // Add style attribs if !styleMode
                                styledMode ?
                                    {} :
                                    series.pointAttribs(
                                        point, point.selected && 'select'
                                    )
                            );

                            // In styled mode apply point.color. Use CSS, otherwise the
                            // fill used in the style sheet will take precedence over
                            // the fill attribute.
                            if (series.colorAttribs && styledMode) {
                                // Heatmap is loaded
                                extend(css, series.colorAttribs(point));
                            }

                            if (!series[groupKey]) {
                                series[groupKey] = renderer.g(groupKey)
                                    .attr({
                                        // @todo Set the zIndex based upon the number of
                                        // levels, instead of using 1000
                                        zIndex: 1000 - levelDynamic
                                    })
                                    .add(series.group);
                            }
                        }

                        // Draw the point
                        point.draw({
                            animatableAttribs: animate,
                            attribs: attr,
                            css: css,
                            group: series[groupKey],
                            renderer: renderer,
                            shadow: shadow,
                            shapeArgs: shapeArgs,
                            shapeType: 'rect'
                        });

                        // If setRootNode is allowed, set a point cursor on clickables &
                        // add drillId to point
                        if (allowTraversingTree && point.graphic) {
                            point.drillId = options.interactByLeaf ?
                                series.drillToByLeaf(point) :
                                series.drillToByGroup(point);
                        }
                    });
                },
                // Add drilling on the suitable points
                onClickDrillToNode: function (event) {
                    var series = this,
                        point = event.point,
                        drillId = point && point.drillId;

                    // If a drill id is returned, add click event and cursor.
                    if (isString(drillId)) {
                        point.setState(''); // Remove hover
                        series.setRootNode(drillId, true, { trigger: 'click' });
                    }
                },
                /**
                 * Finds the drill id for a parent node. Returns false if point should
                 * not have a click event.
                 *
                 * @private
                 * @function Highcharts.Series#drillToByGroup
                 *
                 * @param {object} point
                 *
                 * @return {boolean|string}
                 *         Drill to id or false when point should not have a click
                 *         event.
                 */
                drillToByGroup: function (point) {
                    var series = this,
                        drillId = false;

                    if ((point.node.level - series.nodeMap[series.rootNode].level) ===
                        1 &&
                        !point.node.isLeaf
                    ) {
                        drillId = point.id;
                    }
                    return drillId;
                },
                /**
                 * Finds the drill id for a leaf node. Returns false if point should not
                 * have a click event
                 *
                 * @private
                 * @function Highcharts.Series#drillToByLeaf
                 *
                 * @param {object} point
                 *
                 * @return {boolean|string}
                 *         Drill to id or false when point should not have a click
                 *         event.
                 */
                drillToByLeaf: function (point) {
                    var series = this,
                        drillId = false,
                        nodeParent;

                    if ((point.node.parent !== series.rootNode) &&
                        point.node.isLeaf
                    ) {
                        nodeParent = point.node;
                        while (!drillId) {
                            nodeParent = series.nodeMap[nodeParent.parent];
                            if (nodeParent.parent === series.rootNode) {
                                drillId = nodeParent.id;
                            }
                        }
                    }
                    return drillId;
                },
                drillUp: function () {
                    var series = this,
                        node = series.nodeMap[series.rootNode];

                    if (node && isString(node.parent)) {
                        series.setRootNode(
                            node.parent,
                            true,
                            { trigger: 'traverseUpButton' }
                        );
                    }
                },
                // TODO remove this function at a suitable version.
                drillToNode: function (id, redraw) {
                    error(
                        'WARNING: treemap.drillToNode has been renamed to treemap.' +
                        'setRootNode, and will be removed in the next major version.'
                    );
                    this.setRootNode(id, redraw);
                },
                /**
                 * Sets a new root node for the series.
                 *
                 * @private
                 * @function Highcharts.Series#setRootNode
                 *
                 * @param {string} id The id of the new root node.
                 * @param {boolean} [redraw=true] Wether to redraw the chart or not.
                 * @param {object} [eventArguments] Arguments to be accessed in
                 * event handler.
                 * @param {string} [eventArguments.newRootId] Id of the new root.
                 * @param {string} [eventArguments.previousRootId] Id of the previous
                 * root.
                 * @param {boolean} [eventArguments.redraw] Wether to redraw the
                 * chart after.
                 * @param {object} [eventArguments.series] The series to update the root
                 * of.
                 * @param {string} [eventArguments.trigger] The action which
                 * triggered the event. Undefined if the setRootNode is called
                 * directly.
                 */
                setRootNode: function (id, redraw, eventArguments) {
                    var series = this,
                        eventArgs = extend({
                            newRootId: id,
                            previousRootId: series.rootNode,
                            redraw: pick(redraw, true),
                            series: series
                        }, eventArguments);

                    /**
                     * The default functionality of the setRootNode event.
                     *
                     * @private
                     * @param {object} args The event arguments.
                     * @param {string} args.newRootId Id of the new root.
                     * @param {string} args.previousRootId Id of the previous root.
                     * @param {boolean} args.redraw Wether to redraw the chart after.
                     * @param {object} args.series The series to update the root of.
                     * @param {string} [args.trigger=undefined] The action which
                     * triggered the event. Undefined if the setRootNode is called
                     * directly.
                     */
                    var defaultFn = function (args) {
                        var series = args.series;

                        // Store previous and new root ids on the series.
                        series.idPreviousRoot = args.previousRootId;
                        series.rootNode = args.newRootId;

                        // Redraw the chart
                        series.isDirty = true; // Force redraw
                        if (args.redraw) {
                            series.chart.redraw();
                        }
                    };

                    // Fire setRootNode event.
                    fireEvent(series, 'setRootNode', eventArgs, defaultFn);
                },
                renderTraverseUpButton: function (rootId) {
                    var series = this,
                        nodeMap = series.nodeMap,
                        node = nodeMap[rootId],
                        name = node.name,
                        buttonOptions = series.options.traverseUpButton,
                        backText = pick(buttonOptions.text, name, '< Back'),
                        attr,
                        states;

                    if (rootId === '') {
                        if (series.drillUpButton) {
                            series.drillUpButton = series.drillUpButton.destroy();
                        }
                    } else if (!this.drillUpButton) {
                        attr = buttonOptions.theme;
                        states = attr && attr.states;

                        this.drillUpButton = this.chart.renderer.button(
                            backText,
                            null,
                            null,
                            function () {
                                series.drillUp();
                            },
                            attr,
                            states && states.hover,
                            states && states.select
                        )
                            .addClass('highcharts-drillup-button')
                            .attr({
                                align: buttonOptions.position.align,
                                zIndex: 7
                            })
                            .add()
                            .align(
                                buttonOptions.position,
                                false,
                                buttonOptions.relativeTo || 'plotBox'
                            );
                    } else {
                        this.drillUpButton.placed = false;
                        this.drillUpButton.attr({
                            text: backText
                        })
                            .align();
                    }
                },
                buildKDTree: noop,
                drawLegendSymbol: H.LegendSymbolMixin.drawRectangle,
                getExtremes: function () {
                // Get the extremes from the value data
                    Series.prototype.getExtremes.call(this, this.colorValueData);
                    this.valueMin = this.dataMin;
                    this.valueMax = this.dataMax;

                    // Get the extremes from the y data
                    Series.prototype.getExtremes.call(this);
                },
                getExtremesFromAll: true,
                bindAxes: function () {
                    var treeAxis = {
                        endOnTick: false,
                        gridLineWidth: 0,
                        lineWidth: 0,
                        min: 0,
                        dataMin: 0,
                        minPadding: 0,
                        max: 100,
                        dataMax: 100,
                        maxPadding: 0,
                        startOnTick: false,
                        title: null,
                        tickPositions: []
                    };

                    Series.prototype.bindAxes.call(this);
                    H.extend(this.yAxis.options, treeAxis);
                    H.extend(this.xAxis.options, treeAxis);
                },

                /**
                 * Workaround for `inactive` state. Since `series.opacity` option is
                 * already reserved, don't use that state at all by disabling
                 * `inactiveOtherPoints` and not inheriting states by points.
                 *
                 * @private
                 */
                setState: function (state) {
                    this.options.inactiveOtherPoints = true;
                    Series.prototype.setState.call(this, state, false);
                    this.options.inactiveOtherPoints = false;
                },
                utils: {
                    recursive: recursive
                }

                // Point class
            }, {
                draw: drawPoint,
                getClassName: function () {
                    var className = H.Point.prototype.getClassName.call(this),
                        series = this.series,
                        options = series.options;

                    // Above the current level
                    if (this.node.level <= series.nodeMap[series.rootNode].level) {
                        className += ' highcharts-above-level';

                    } else if (
                        !this.node.isLeaf &&
                    !pick(options.interactByLeaf, !options.allowTraversingTree)
                    ) {
                        className += ' highcharts-internal-node-interactive';

                    } else if (!this.node.isLeaf) {
                        className += ' highcharts-internal-node';
                    }
                    return className;
                },

                /**
                 * A tree point is valid if it has han id too, assume it may be a parent
                 * item.
                 *
                 * @private
                 * @function Highcharts.Point#isValid
                 */
                isValid: function () {
                    return this.id || isNumber(this.value);
                },
                setState: function (state) {
                    H.Point.prototype.setState.call(this, state);

                    // Graphic does not exist when point is not visible.
                    if (this.graphic) {
                        this.graphic.attr({
                            zIndex: state === 'hover' ? 1 : 0
                        });
                    }
                },
                setVisible: seriesTypes.pie.prototype.pointClass.prototype.setVisible,
                shouldDraw: function () {
                    var point = this;
                    return isNumber(point.plotY) && point.y !== null;
                }
            }
        );


        /**
         * A `treemap` series. If the [type](#series.treemap.type) option is
         * not specified, it is inherited from [chart.type](#chart.type).
         *
         * @extends   series,plotOptions.treemap
         * @excluding dataParser, dataURL, stack
         * @product   highcharts
         * @apioption series.treemap
         */

        /**
         * An array of data points for the series. For the `treemap` series
         * type, points can be given in the following ways:
         *
         * 1. An array of numerical values. In this case, the numerical values will be
         *    interpreted as `value` options. Example:
         *  ```js
         *  data: [0, 5, 3, 5]
         *  ```
         *
         * 2.  An array of objects with named values. The following snippet shows only a
         *    few settings, see the complete options set below. If the total number of
         *    data points exceeds the series'
         *    [turboThreshold](#series.treemap.turboThreshold),
         * this option is not available.
         *  ```js
         *     data: [{
         *         value: 9,
         *         name: "Point2",
         *         color: "#00FF00"
         *     }, {
         *         value: 6,
         *         name: "Point1",
         *         color: "#FF00FF"
         *     }]
         *  ```
         *
         * @sample {highcharts} highcharts/chart/reflow-true/
         *         Numerical values
         * @sample {highcharts} highcharts/series/data-array-of-objects/
         *         Config objects
         *
         * @type      {Array<number|null|*>}
         * @extends   series.heatmap.data
         * @excluding x, y
         * @product   highcharts
         * @apioption series.treemap.data
         */

        /**
         * The value of the point, resulting in a relative area of the point
         * in the treemap.
         *
         * @type      {number|null}
         * @product   highcharts
         * @apioption series.treemap.data.value
         */

        /**
         * Serves a purpose only if a `colorAxis` object is defined in the chart
         * options. This value will decide which color the point gets from the
         * scale of the colorAxis.
         *
         * @type      {number}
         * @since     4.1.0
         * @product   highcharts
         * @apioption series.treemap.data.colorValue
         */

        /**
         * Only for treemap. Use this option to build a tree structure. The
         * value should be the id of the point which is the parent. If no points
         * has a matching id, or this option is undefined, then the parent will
         * be set to the root.
         *
         * @sample {highcharts} highcharts/point/parent/
         *         Point parent
         * @sample {highcharts} highcharts/demo/treemap-with-levels/
         *         Example where parent id is not matching
         *
         * @type      {string}
         * @since     4.1.0
         * @product   highcharts
         * @apioption series.treemap.data.parent
         */

    });
    _registerModule(_modules, 'masters/modules/treemap.src.js', [], function () {


    });
}));