wwbsr/node_modules/highcharts/indicators/macd.src.js

/**
 * @license Highstock JS v8.2.0 (2020-08-20)
 *
 * Indicator series type for Highstock
 *
 * (c) 2010-2019 Sebastian Bochan
 *
 * 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/indicators/macd', ['highcharts', 'highcharts/modules/stock'], 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, 'Stock/Indicators/MACDIndicator.js', [_modules['Core/Globals.js'], _modules['Core/Utilities.js']], function (H, U) {
        /* *
         *
         *  License: www.highcharts.com/license
         *
         *  !!!!!!! SOURCE GETS TRANSPILED BY TYPESCRIPT. EDIT TS FILE ONLY. !!!!!!!
         *
         * */
        var correctFloat = U.correctFloat,
            defined = U.defined,
            merge = U.merge,
            seriesType = U.seriesType;
        var noop = H.noop,
            SMA = H.seriesTypes.sma,
            EMA = H.seriesTypes.ema;
        /**
         * The MACD series type.
         *
         * @private
         * @class
         * @name Highcharts.seriesTypes.macd
         *
         * @augments Highcharts.Series
         */
        seriesType('macd', 'sma', 
        /**
         * Moving Average Convergence Divergence (MACD). This series requires
         * `linkedTo` option to be set and should be loaded after the
         * `stock/indicators/indicators.js` and `stock/indicators/ema.js`.
         *
         * @sample stock/indicators/macd
         *         MACD indicator
         *
         * @extends      plotOptions.sma
         * @since        6.0.0
         * @product      highstock
         * @requires     stock/indicators/indicators
         * @requires     stock/indicators/macd
         * @optionparent plotOptions.macd
         */
        {
            params: {
                /**
                 * The short period for indicator calculations.
                 */
                shortPeriod: 12,
                /**
                 * The long period for indicator calculations.
                 */
                longPeriod: 26,
                /**
                 * The base period for signal calculations.
                 */
                signalPeriod: 9,
                period: 26
            },
            /**
             * The styles for signal line
             */
            signalLine: {
                /**
                 * @sample stock/indicators/macd-zones
                 *         Zones in MACD
                 *
                 * @extends plotOptions.macd.zones
                 */
                zones: [],
                styles: {
                    /**
                     * Pixel width of the line.
                     */
                    lineWidth: 1,
                    /**
                     * Color of the line.
                     *
                     * @type  {Highcharts.ColorString}
                     */
                    lineColor: void 0
                }
            },
            /**
             * The styles for macd line
             */
            macdLine: {
                /**
                 * @sample stock/indicators/macd-zones
                 *         Zones in MACD
                 *
                 * @extends plotOptions.macd.zones
                 */
                zones: [],
                styles: {
                    /**
                     * Pixel width of the line.
                     */
                    lineWidth: 1,
                    /**
                     * Color of the line.
                     *
                     * @type  {Highcharts.ColorString}
                     */
                    lineColor: void 0
                }
            },
            threshold: 0,
            groupPadding: 0.1,
            pointPadding: 0.1,
            crisp: false,
            states: {
                hover: {
                    halo: {
                        size: 0
                    }
                }
            },
            tooltip: {
                pointFormat: '<span style="color:{point.color}">\u25CF</span> <b> {series.name}</b><br/>' +
                    'Value: {point.MACD}<br/>' +
                    'Signal: {point.signal}<br/>' +
                    'Histogram: {point.y}<br/>'
            },
            dataGrouping: {
                approximation: 'averages'
            },
            minPointLength: 0
        }, 
        /**
         * @lends Highcharts.Series#
         */
        {
            nameComponents: ['longPeriod', 'shortPeriod', 'signalPeriod'],
            requiredIndicators: ['ema'],
            // "y" value is treated as Histogram data
            pointArrayMap: ['y', 'signal', 'MACD'],
            parallelArrays: ['x', 'y', 'signal', 'MACD'],
            pointValKey: 'y',
            // Columns support:
            markerAttribs: noop,
            getColumnMetrics: H.seriesTypes.column.prototype.getColumnMetrics,
            crispCol: H.seriesTypes.column.prototype.crispCol,
            // Colors and lines:
            init: function () {
                SMA.prototype.init.apply(this, arguments);
                // Check whether series is initialized. It may be not initialized,
                // when any of required indicators is missing.
                if (this.options) {
                    // Set default color for a signal line and the histogram:
                    this.options = merge({
                        signalLine: {
                            styles: {
                                lineColor: this.color
                            }
                        },
                        macdLine: {
                            styles: {
                                color: this.color
                            }
                        }
                    }, this.options);
                    // Zones have indexes automatically calculated, we need to
                    // translate them to support multiple lines within one indicator
                    this.macdZones = {
                        zones: this.options.macdLine.zones,
                        startIndex: 0
                    };
                    this.signalZones = {
                        zones: this.macdZones.zones.concat(this.options.signalLine.zones),
                        startIndex: this.macdZones.zones.length
                    };
                    this.resetZones = true;
                }
            },
            toYData: function (point) {
                return [point.y, point.signal, point.MACD];
            },
            translate: function () {
                var indicator = this, plotNames = ['plotSignal', 'plotMACD'];
                H.seriesTypes.column.prototype.translate.apply(indicator);
                indicator.points.forEach(function (point) {
                    [point.signal, point.MACD].forEach(function (value, i) {
                        if (value !== null) {
                            point[plotNames[i]] =
                                indicator.yAxis.toPixels(value, true);
                        }
                    });
                });
            },
            destroy: function () {
                // this.graph is null due to removing two times the same SVG element
                this.graph = null;
                this.graphmacd = this.graphmacd && this.graphmacd.destroy();
                this.graphsignal = this.graphsignal && this.graphsignal.destroy();
                SMA.prototype.destroy.apply(this, arguments);
            },
            drawPoints: H.seriesTypes.column.prototype.drawPoints,
            drawGraph: function () {
                var indicator = this,
                    mainLinePoints = indicator.points,
                    pointsLength = mainLinePoints.length,
                    mainLineOptions = indicator.options,
                    histogramZones = indicator.zones,
                    gappedExtend = {
                        options: {
                            gapSize: mainLineOptions.gapSize
                        }
                    },
                    otherSignals = [[],
                    []],
                    point;
                // Generate points for top and bottom lines:
                while (pointsLength--) {
                    point = mainLinePoints[pointsLength];
                    if (defined(point.plotMACD)) {
                        otherSignals[0].push({
                            plotX: point.plotX,
                            plotY: point.plotMACD,
                            isNull: !defined(point.plotMACD)
                        });
                    }
                    if (defined(point.plotSignal)) {
                        otherSignals[1].push({
                            plotX: point.plotX,
                            plotY: point.plotSignal,
                            isNull: !defined(point.plotMACD)
                        });
                    }
                }
                // Modify options and generate smoothing line:
                ['macd', 'signal'].forEach(function (lineName, i) {
                    indicator.points = otherSignals[i];
                    indicator.options = merge(mainLineOptions[lineName + 'Line'].styles, gappedExtend);
                    indicator.graph = indicator['graph' + lineName];
                    // Zones extension:
                    indicator.currentLineZone = lineName + 'Zones';
                    indicator.zones =
                        indicator[indicator.currentLineZone].zones;
                    SMA.prototype.drawGraph.call(indicator);
                    indicator['graph' + lineName] = indicator.graph;
                });
                // Restore options:
                indicator.points = mainLinePoints;
                indicator.options = mainLineOptions;
                indicator.zones = histogramZones;
                indicator.currentLineZone = null;
                // indicator.graph = null;
            },
            getZonesGraphs: function (props) {
                var allZones = SMA.prototype.getZonesGraphs.call(this,
                    props),
                    currentZones = allZones;
                if (this.currentLineZone) {
                    currentZones = allZones.splice(this[this.currentLineZone].startIndex + 1);
                    if (!currentZones.length) {
                        // Line has no zones, return basic graph "zone"
                        currentZones = [props[0]];
                    }
                    else {
                        // Add back basic prop:
                        currentZones.splice(0, 0, props[0]);
                    }
                }
                return currentZones;
            },
            applyZones: function () {
                // Histogram zones are handled by drawPoints method
                // Here we need to apply zones for all lines
                var histogramZones = this.zones;
                // signalZones.zones contains all zones:
                this.zones = this.signalZones.zones;
                SMA.prototype.applyZones.call(this);
                // applyZones hides only main series.graph, hide macd line manually
                if (this.graphmacd && this.options.macdLine.zones.length) {
                    this.graphmacd.hide();
                }
                this.zones = histogramZones;
            },
            getValues: function (series, params) {
                var j = 0,
                    MACD = [],
                    xMACD = [],
                    yMACD = [],
                    signalLine = [],
                    shortEMA,
                    longEMA,
                    i;
                if (series.xData.length <
                    params.longPeriod + params.signalPeriod) {
                    return;
                }
                // Calculating the short and long EMA used when calculating the MACD
                shortEMA = EMA.prototype.getValues(series, {
                    period: params.shortPeriod
                });
                longEMA = EMA.prototype.getValues(series, {
                    period: params.longPeriod
                });
                shortEMA = shortEMA.values;
                longEMA = longEMA.values;
                // Subtract each Y value from the EMA's and create the new dataset
                // (MACD)
                for (i = 1; i <= shortEMA.length; i++) {
                    if (defined(longEMA[i - 1]) &&
                        defined(longEMA[i - 1][1]) &&
                        defined(shortEMA[i + params.shortPeriod + 1]) &&
                        defined(shortEMA[i + params.shortPeriod + 1][0])) {
                        MACD.push([
                            shortEMA[i + params.shortPeriod + 1][0],
                            0,
                            null,
                            shortEMA[i + params.shortPeriod + 1][1] -
                                longEMA[i - 1][1]
                        ]);
                    }
                }
                // Set the Y and X data of the MACD. This is used in calculating the
                // signal line.
                for (i = 0; i < MACD.length; i++) {
                    xMACD.push(MACD[i][0]);
                    yMACD.push([0, null, MACD[i][3]]);
                }
                // Setting the signalline (Signal Line: X-day EMA of MACD line).
                signalLine = EMA.prototype.getValues({
                    xData: xMACD,
                    yData: yMACD
                }, {
                    period: params.signalPeriod,
                    index: 2
                });
                signalLine = signalLine.values;
                // Setting the MACD Histogram. In comparison to the loop with pure
                // MACD this loop uses MACD x value not xData.
                for (i = 0; i < MACD.length; i++) {
                    // detect the first point
                    if (MACD[i][0] >= signalLine[0][0]) {
                        MACD[i][2] = signalLine[j][1];
                        yMACD[i] = [0, signalLine[j][1], MACD[i][3]];
                        if (MACD[i][3] === null) {
                            MACD[i][1] = 0;
                            yMACD[i][0] = 0;
                        }
                        else {
                            MACD[i][1] = correctFloat(MACD[i][3] -
                                signalLine[j][1]);
                            yMACD[i][0] = correctFloat(MACD[i][3] -
                                signalLine[j][1]);
                        }
                        j++;
                    }
                }
                return {
                    values: MACD,
                    xData: xMACD,
                    yData: yMACD
                };
            }
        });
        /**
         * A `MACD` series. If the [type](#series.macd.type) option is not
         * specified, it is inherited from [chart.type](#chart.type).
         *
         * @extends   series,plotOptions.macd
         * @since     6.0.0
         * @product   highstock
         * @excluding dataParser, dataURL
         * @requires  stock/indicators/indicators
         * @requires  stock/indicators/macd
         * @apioption series.macd
         */
        ''; // to include the above in the js output

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


    });
}));