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- /**
- * (c) 2010-2019 Torstein Honsi
- *
- * License: www.highcharts.com/license
- */
- /**
- * Normalized interval.
- *
- * @interface Highcharts.NormalizedIntervalObject
- *//**
- * The interval in axis values (ms).
- *
- * @name Highcharts.NormalizedIntervalObject#unitRange
- * @type {number}
- *//**
- * The count.
- *
- * @name Highcharts.NormalizedIntervalObject#count
- * @type {number}
- */
- /**
- * Function of an additional date format specifier.
- *
- * @callback Highcharts.TimeFormatCallbackFunction
- *
- * @param {number} timestamp
- * The time to format.
- *
- * @return {string}
- * The formatted portion of the date.
- */
- /**
- * Additonal time tick information.
- *
- * @interface Highcharts.TimeTicksInfoObject
- * @augments Highcharts.NormalizedIntervalObject
- *//**
- * @name Highcharts.TimeTicksInfoObject#higherRanks
- * @type {Array<string>}
- *//**
- * @name Highcharts.TimeTicksInfoObject#totalRange
- * @type {number}
- */
- /**
- * Time ticks.
- *
- * @interface Highcharts.TimeTicksObject
- * @augments Array<number>
- *//**
- * @name Highcharts.TimeTicksObject#info
- * @type {Highcharts.TimeTicksInfoObject}
- */
- 'use strict';
- import Highcharts from './Globals.js';
- var H = Highcharts,
- defined = H.defined,
- extend = H.extend,
- merge = H.merge,
- pick = H.pick,
- timeUnits = H.timeUnits,
- win = H.win;
- /**
- * The Time class. Time settings are applied in general for each page using
- * `Highcharts.setOptions`, or individually for each Chart item through the
- * [time](https://api.highcharts.com/highcharts/time) options set.
- *
- * The Time object is available from {@link Highcharts.Chart#time},
- * which refers to `Highcharts.time` if no individual time settings are
- * applied.
- *
- * @example
- * // Apply time settings globally
- * Highcharts.setOptions({
- * time: {
- * timezone: 'Europe/London'
- * }
- * });
- *
- * // Apply time settings by instance
- * var chart = Highcharts.chart('container', {
- * time: {
- * timezone: 'America/New_York'
- * },
- * series: [{
- * data: [1, 4, 3, 5]
- * }]
- * });
- *
- * // Use the Time object
- * console.log(
- * 'Current time in New York',
- * chart.time.dateFormat('%Y-%m-%d %H:%M:%S', Date.now())
- * );
- *
- * @class
- * @name Highcharts.Time
- *
- * @param {Highcharts.TimeOptions} options
- * Time options as defined in [chart.options.time](/highcharts/time).
- *
- * @since 6.0.5
- */
- Highcharts.Time = function (options) {
- this.update(options, false);
- };
- Highcharts.Time.prototype = {
- /**
- * Time options that can apply globally or to individual charts. These
- * settings affect how `datetime` axes are laid out, how tooltips are
- * formatted, how series
- * [pointIntervalUnit](#plotOptions.series.pointIntervalUnit) works and how
- * the Highstock range selector handles time.
- *
- * The common use case is that all charts in the same Highcharts object
- * share the same time settings, in which case the global settings are set
- * using `setOptions`.
- *
- * ```js
- * // Apply time settings globally
- * Highcharts.setOptions({
- * time: {
- * timezone: 'Europe/London'
- * }
- * });
- * // Apply time settings by instance
- * var chart = Highcharts.chart('container', {
- * time: {
- * timezone: 'America/New_York'
- * },
- * series: [{
- * data: [1, 4, 3, 5]
- * }]
- * });
- *
- * // Use the Time object
- * console.log(
- * 'Current time in New York',
- * chart.time.dateFormat('%Y-%m-%d %H:%M:%S', Date.now())
- * );
- * ```
- *
- * Since v6.0.5, the time options were moved from the `global` obect to the
- * `time` object, and time options can be set on each individual chart.
- *
- * @sample {highcharts|highstock}
- * highcharts/time/timezone/
- * Set the timezone globally
- * @sample {highcharts}
- * highcharts/time/individual/
- * Set the timezone per chart instance
- * @sample {highstock}
- * stock/time/individual/
- * Set the timezone per chart instance
- *
- * @since 6.0.5
- * @apioption time
- */
- /**
- * Whether to use UTC time for axis scaling, tickmark placement and
- * time display in `Highcharts.dateFormat`. Advantages of using UTC
- * is that the time displays equally regardless of the user agent's
- * time zone settings. Local time can be used when the data is loaded
- * in real time or when correct Daylight Saving Time transitions are
- * required.
- *
- * @sample {highcharts} highcharts/time/useutc-true/
- * True by default
- * @sample {highcharts} highcharts/time/useutc-false/
- * False
- *
- * @type {boolean}
- * @default true
- * @apioption time.useUTC
- */
- /**
- * A custom `Date` class for advanced date handling. For example,
- * [JDate](https://github.com/tahajahangir/jdate) can be hooked in to
- * handle Jalali dates.
- *
- * @type {*}
- * @since 4.0.4
- * @product highcharts highstock gantt
- * @apioption time.Date
- */
- /**
- * A callback to return the time zone offset for a given datetime. It
- * takes the timestamp in terms of milliseconds since January 1 1970,
- * and returns the timezone offset in minutes. This provides a hook
- * for drawing time based charts in specific time zones using their
- * local DST crossover dates, with the help of external libraries.
- *
- * @see [global.timezoneOffset](#global.timezoneOffset)
- *
- * @sample {highcharts|highstock} highcharts/time/gettimezoneoffset/
- * Use moment.js to draw Oslo time regardless of browser locale
- *
- * @type {Function}
- * @since 4.1.0
- * @product highcharts highstock gantt
- * @apioption time.getTimezoneOffset
- */
- /**
- * Requires [moment.js](http://momentjs.com/). If the timezone option
- * is specified, it creates a default
- * [getTimezoneOffset](#time.getTimezoneOffset) function that looks
- * up the specified timezone in moment.js. If moment.js is not included,
- * this throws a Highcharts error in the console, but does not crash the
- * chart.
- *
- * @see [getTimezoneOffset](#time.getTimezoneOffset)
- *
- * @sample {highcharts|highstock} highcharts/time/timezone/
- * Europe/Oslo
- *
- * @type {string}
- * @since 5.0.7
- * @product highcharts highstock gantt
- * @apioption time.timezone
- */
- /**
- * The timezone offset in minutes. Positive values are west, negative
- * values are east of UTC, as in the ECMAScript
- * [getTimezoneOffset](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date/getTimezoneOffset)
- * method. Use this to display UTC based data in a predefined time zone.
- *
- * @see [time.getTimezoneOffset](#time.getTimezoneOffset)
- *
- * @sample {highcharts|highstock} highcharts/time/timezoneoffset/
- * Timezone offset
- *
- * @type {number}
- * @default 0
- * @since 3.0.8
- * @product highcharts highstock gantt
- * @apioption time.timezoneOffset
- */
- defaultOptions: {},
- /**
- * Update the Time object with current options. It is called internally on
- * initiating Highcharts, after running `Highcharts.setOptions` and on
- * `Chart.update`.
- *
- * @private
- * @function Highcharts.Time#update
- *
- * @param {Highcharts.TimeOptions} options
- */
- update: function (options) {
- var useUTC = pick(options && options.useUTC, true),
- time = this;
- this.options = options = merge(true, this.options || {}, options);
- // Allow using a different Date class
- this.Date = options.Date || win.Date;
- this.useUTC = useUTC;
- this.timezoneOffset = useUTC && options.timezoneOffset;
- /**
- * Get the time zone offset based on the current timezone information as
- * set in the global options.
- *
- * @function Highcharts.Time#getTimezoneOffset
- *
- * @param {number} timestamp
- * The JavaScript timestamp to inspect.
- *
- * @return {number}
- * The timezone offset in minutes compared to UTC.
- */
- this.getTimezoneOffset = this.timezoneOffsetFunction();
- /*
- * The time object has options allowing for variable time zones, meaning
- * the axis ticks or series data needs to consider this.
- */
- this.variableTimezone = !!(
- !useUTC ||
- options.getTimezoneOffset ||
- options.timezone
- );
- // UTC time with timezone handling
- if (this.variableTimezone || this.timezoneOffset) {
- this.get = function (unit, date) {
- var realMs = date.getTime(),
- ms = realMs - time.getTimezoneOffset(date),
- ret;
- date.setTime(ms); // Temporary adjust to timezone
- ret = date['getUTC' + unit]();
- date.setTime(realMs); // Reset
- return ret;
- };
- this.set = function (unit, date, value) {
- var ms, offset, newOffset;
- // For lower order time units, just set it directly using local
- // time
- if (
- unit === 'Milliseconds' ||
- unit === 'Seconds' ||
- // If we're dealting with minutes, we only need to
- // consider timezone if we're in Indian time zones with
- // half-hour offsets (#8768).
- (
- unit === 'Minutes' &&
- date.getTimezoneOffset() % 60 === 0
- )
- ) {
- date['set' + unit](value);
- // Higher order time units need to take the time zone into
- // account
- } else {
- // Adjust by timezone
- offset = time.getTimezoneOffset(date);
- ms = date.getTime() - offset;
- date.setTime(ms);
- date['setUTC' + unit](value);
- newOffset = time.getTimezoneOffset(date);
- ms = date.getTime() + newOffset;
- date.setTime(ms);
- }
- };
- // UTC time with no timezone handling
- } else if (useUTC) {
- this.get = function (unit, date) {
- return date['getUTC' + unit]();
- };
- this.set = function (unit, date, value) {
- return date['setUTC' + unit](value);
- };
- // Local time
- } else {
- this.get = function (unit, date) {
- return date['get' + unit]();
- };
- this.set = function (unit, date, value) {
- return date['set' + unit](value);
- };
- }
- },
- /**
- * Make a time and returns milliseconds. Interprets the inputs as UTC time,
- * local time or a specific timezone time depending on the current time
- * settings.
- *
- * @function Highcharts.Time#makeTime
- *
- * @param {number} year
- * The year
- *
- * @param {number} month
- * The month. Zero-based, so January is 0.
- *
- * @param {number} [date=1]
- * The day of the month
- *
- * @param {number} [hours=0]
- * The hour of the day, 0-23.
- *
- * @param {number} [minutes=0]
- * The minutes
- *
- * @param {number} [seconds=0]
- * The seconds
- *
- * @return {number}
- * The time in milliseconds since January 1st 1970.
- */
- makeTime: function (year, month, date, hours, minutes, seconds) {
- var d, offset, newOffset;
- if (this.useUTC) {
- d = this.Date.UTC.apply(0, arguments);
- offset = this.getTimezoneOffset(d);
- d += offset;
- newOffset = this.getTimezoneOffset(d);
- if (offset !== newOffset) {
- d += newOffset - offset;
- // A special case for transitioning from summer time to winter time.
- // When the clock is set back, the same time is repeated twice, i.e.
- // 02:30 am is repeated since the clock is set back from 3 am to
- // 2 am. We need to make the same time as local Date does.
- } else if (
- offset - 36e5 === this.getTimezoneOffset(d - 36e5) &&
- !H.isSafari
- ) {
- d -= 36e5;
- }
- } else {
- d = new this.Date(
- year,
- month,
- pick(date, 1),
- pick(hours, 0),
- pick(minutes, 0),
- pick(seconds, 0)
- ).getTime();
- }
- return d;
- },
- /**
- * Sets the getTimezoneOffset function. If the `timezone` option is set, a
- * default getTimezoneOffset function with that timezone is returned. If
- * a `getTimezoneOffset` option is defined, it is returned. If neither are
- * specified, the function using the `timezoneOffset` option or 0 offset is
- * returned.
- *
- * @private
- * @function Highcharts.Time#timezoneOffsetFunction
- *
- * @return {Function}
- * A getTimezoneOffset function
- */
- timezoneOffsetFunction: function () {
- var time = this,
- options = this.options,
- moment = win.moment;
- if (!this.useUTC) {
- return function (timestamp) {
- return new Date(timestamp).getTimezoneOffset() * 60000;
- };
- }
- if (options.timezone) {
- if (!moment) {
- // getTimezoneOffset-function stays undefined because it depends
- // on Moment.js
- H.error(25);
- } else {
- return function (timestamp) {
- return -moment.tz(
- timestamp,
- options.timezone
- ).utcOffset() * 60000;
- };
- }
- }
- // If not timezone is set, look for the getTimezoneOffset callback
- if (this.useUTC && options.getTimezoneOffset) {
- return function (timestamp) {
- return options.getTimezoneOffset(timestamp) * 60000;
- };
- }
- // Last, use the `timezoneOffset` option if set
- return function () {
- return (time.timezoneOffset || 0) * 60000;
- };
- },
- /**
- * Formats a JavaScript date timestamp (milliseconds since Jan 1st 1970)
- * into a human readable date string. The format is a subset of the formats
- * for PHP's [strftime](http://www.php.net/manual/en/function.strftime.php)
- * function. Additional formats can be given in the
- * {@link Highcharts.dateFormats} hook.
- *
- * @function Highcharts.Time#dateFormat
- *
- * @param {string} [format]
- * The desired format where various time representations are
- * prefixed with %.
- *
- * @param {number} timestamp
- * The JavaScript timestamp.
- *
- * @param {boolean} [capitalize=false]
- * Upper case first letter in the return.
- *
- * @return {string}
- * The formatted date.
- */
- dateFormat: function (format, timestamp, capitalize) {
- if (!H.defined(timestamp) || isNaN(timestamp)) {
- return H.defaultOptions.lang.invalidDate || '';
- }
- format = H.pick(format, '%Y-%m-%d %H:%M:%S');
- var time = this,
- date = new this.Date(timestamp),
- // get the basic time values
- hours = this.get('Hours', date),
- day = this.get('Day', date),
- dayOfMonth = this.get('Date', date),
- month = this.get('Month', date),
- fullYear = this.get('FullYear', date),
- lang = H.defaultOptions.lang,
- langWeekdays = lang.weekdays,
- shortWeekdays = lang.shortWeekdays,
- pad = H.pad,
- // List all format keys. Custom formats can be added from the
- // outside.
- replacements = H.extend(
- {
- // Day
- // Short weekday, like 'Mon'
- 'a': shortWeekdays ?
- shortWeekdays[day] :
- langWeekdays[day].substr(0, 3),
- // Long weekday, like 'Monday'
- 'A': langWeekdays[day],
- // Two digit day of the month, 01 to 31
- 'd': pad(dayOfMonth),
- // Day of the month, 1 through 31
- 'e': pad(dayOfMonth, 2, ' '),
- 'w': day,
- // Week (none implemented)
- // 'W': weekNumber(),
- // Month
- // Short month, like 'Jan'
- 'b': lang.shortMonths[month],
- // Long month, like 'January'
- 'B': lang.months[month],
- // Two digit month number, 01 through 12
- 'm': pad(month + 1),
- // Month number, 1 through 12 (#8150)
- 'o': month + 1,
- // Year
- // Two digits year, like 09 for 2009
- 'y': fullYear.toString().substr(2, 2),
- // Four digits year, like 2009
- 'Y': fullYear,
- // Time
- // Two digits hours in 24h format, 00 through 23
- 'H': pad(hours),
- // Hours in 24h format, 0 through 23
- 'k': hours,
- // Two digits hours in 12h format, 00 through 11
- 'I': pad((hours % 12) || 12),
- // Hours in 12h format, 1 through 12
- 'l': (hours % 12) || 12,
- // Two digits minutes, 00 through 59
- 'M': pad(time.get('Minutes', date)),
- // Upper case AM or PM
- 'p': hours < 12 ? 'AM' : 'PM',
- // Lower case AM or PM
- 'P': hours < 12 ? 'am' : 'pm',
- // Two digits seconds, 00 through 59
- 'S': pad(date.getSeconds()),
- // Milliseconds (naming from Ruby)
- 'L': pad(Math.floor(timestamp % 1000), 3)
- },
- /**
- * A hook for defining additional date format specifiers. New
- * specifiers are defined as key-value pairs by using the
- * specifier as key, and a function which takes the timestamp as
- * value. This function returns the formatted portion of the
- * date.
- *
- * @sample highcharts/global/dateformats/
- * Adding support for week number
- *
- * @name Highcharts.dateFormats
- * @type {Highcharts.Dictionary<Highcharts.TimeFormatCallbackFunction>}
- */
- H.dateFormats
- );
- // Do the replaces
- H.objectEach(replacements, function (val, key) {
- // Regex would do it in one line, but this is faster
- while (format.indexOf('%' + key) !== -1) {
- format = format.replace(
- '%' + key,
- typeof val === 'function' ? val.call(time, timestamp) : val
- );
- }
- });
- // Optionally capitalize the string and return
- return capitalize ?
- format.substr(0, 1).toUpperCase() + format.substr(1) :
- format;
- },
- /**
- * Resolve legacy formats of dateTimeLabelFormats (strings and arrays) into
- * an object.
- * @param {String|Array|Object} f General format description
- * @return {Object} The object definition
- */
- resolveDTLFormat: function (f) {
- if (!H.isObject(f, true)) {
- f = H.splat(f);
- return {
- main: f[0],
- from: f[1],
- to: f[2]
- };
- }
- return f;
- },
- /**
- * Return an array with time positions distributed on round time values
- * right and right after min and max. Used in datetime axes as well as for
- * grouping data on a datetime axis.
- *
- * @function Highcharts.Time#getTimeTicks
- *
- * @param {Highcharts.NormalizedIntervalObject} normalizedInterval
- * The interval in axis values (ms) and the count
- *
- * @param {number} [min]
- * The minimum in axis values
- *
- * @param {number} [max]
- * The maximum in axis values
- *
- * @param {number} [startOfWeek=1]
- *
- * @return {Highcharts.TimeTicksObject}
- */
- getTimeTicks: function (
- normalizedInterval,
- min,
- max,
- startOfWeek
- ) {
- var time = this,
- Date = time.Date,
- tickPositions = [],
- i,
- higherRanks = {},
- minYear, // used in months and years as a basis for Date.UTC()
- // When crossing DST, use the max. Resolves #6278.
- minDate = new Date(min),
- interval = normalizedInterval.unitRange,
- count = normalizedInterval.count || 1,
- variableDayLength,
- minDay;
- startOfWeek = pick(startOfWeek, 1);
- if (defined(min)) { // #1300
- time.set(
- 'Milliseconds',
- minDate,
- interval >= timeUnits.second ?
- 0 : // #3935
- count * Math.floor(
- time.get('Milliseconds', minDate) / count
- )
- ); // #3652, #3654
- if (interval >= timeUnits.second) { // second
- time.set(
- 'Seconds',
- minDate,
- interval >= timeUnits.minute ?
- 0 : // #3935
- count * Math.floor(time.get('Seconds', minDate) / count)
- );
- }
- if (interval >= timeUnits.minute) { // minute
- time.set(
- 'Minutes',
- minDate,
- interval >= timeUnits.hour ?
- 0 :
- count * Math.floor(time.get('Minutes', minDate) / count)
- );
- }
- if (interval >= timeUnits.hour) { // hour
- time.set(
- 'Hours',
- minDate,
- interval >= timeUnits.day ?
- 0 :
- count * Math.floor(
- time.get('Hours', minDate) / count
- )
- );
- }
- if (interval >= timeUnits.day) { // day
- time.set(
- 'Date',
- minDate,
- interval >= timeUnits.month ?
- 1 :
- Math.max(
- 1,
- count * Math.floor(
- time.get('Date', minDate) / count
- )
- )
- );
- }
- if (interval >= timeUnits.month) { // month
- time.set(
- 'Month',
- minDate,
- interval >= timeUnits.year ? 0 :
- count * Math.floor(time.get('Month', minDate) / count)
- );
- minYear = time.get('FullYear', minDate);
- }
- if (interval >= timeUnits.year) { // year
- minYear -= minYear % count;
- time.set('FullYear', minDate, minYear);
- }
- // week is a special case that runs outside the hierarchy
- if (interval === timeUnits.week) {
- // get start of current week, independent of count
- minDay = time.get('Day', minDate);
- time.set(
- 'Date',
- minDate,
- (
- time.get('Date', minDate) -
- minDay + startOfWeek +
- // We don't want to skip days that are before
- // startOfWeek (#7051)
- (minDay < startOfWeek ? -7 : 0)
- )
- );
- }
- // Get basics for variable time spans
- minYear = time.get('FullYear', minDate);
- var minMonth = time.get('Month', minDate),
- minDateDate = time.get('Date', minDate),
- minHours = time.get('Hours', minDate);
- // Redefine min to the floored/rounded minimum time (#7432)
- min = minDate.getTime();
- // Handle local timezone offset
- if (time.variableTimezone) {
- // Detect whether we need to take the DST crossover into
- // consideration. If we're crossing over DST, the day length may
- // be 23h or 25h and we need to compute the exact clock time for
- // each tick instead of just adding hours. This comes at a cost,
- // so first we find out if it is needed (#4951).
- variableDayLength = (
- // Long range, assume we're crossing over.
- max - min > 4 * timeUnits.month ||
- // Short range, check if min and max are in different time
- // zones.
- time.getTimezoneOffset(min) !== time.getTimezoneOffset(max)
- );
- }
- // Iterate and add tick positions at appropriate values
- var t = minDate.getTime();
- i = 1;
- while (t < max) {
- tickPositions.push(t);
- // if the interval is years, use Date.UTC to increase years
- if (interval === timeUnits.year) {
- t = time.makeTime(minYear + i * count, 0);
- // if the interval is months, use Date.UTC to increase months
- } else if (interval === timeUnits.month) {
- t = time.makeTime(minYear, minMonth + i * count);
- // if we're using global time, the interval is not fixed as it
- // jumps one hour at the DST crossover
- } else if (
- variableDayLength &&
- (interval === timeUnits.day || interval === timeUnits.week)
- ) {
- t = time.makeTime(
- minYear,
- minMonth,
- minDateDate +
- i * count * (interval === timeUnits.day ? 1 : 7)
- );
- } else if (
- variableDayLength &&
- interval === timeUnits.hour &&
- count > 1
- ) {
- // make sure higher ranks are preserved across DST (#6797,
- // #7621)
- t = time.makeTime(
- minYear,
- minMonth,
- minDateDate,
- minHours + i * count
- );
- // else, the interval is fixed and we use simple addition
- } else {
- t += interval * count;
- }
- i++;
- }
- // push the last time
- tickPositions.push(t);
- // Handle higher ranks. Mark new days if the time is on midnight
- // (#950, #1649, #1760, #3349). Use a reasonable dropout threshold
- // to prevent looping over dense data grouping (#6156).
- if (interval <= timeUnits.hour && tickPositions.length < 10000) {
- tickPositions.forEach(function (t) {
- if (
- // Speed optimization, no need to run dateFormat unless
- // we're on a full or half hour
- t % 1800000 === 0 &&
- // Check for local or global midnight
- time.dateFormat('%H%M%S%L', t) === '000000000'
- ) {
- higherRanks[t] = 'day';
- }
- });
- }
- }
- // record information on the chosen unit - for dynamic label formatter
- tickPositions.info = extend(normalizedInterval, {
- higherRanks: higherRanks,
- totalRange: interval * count
- });
- return tickPositions;
- }
- }; // end of Time
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