@danielmoncada/angular-datetime-picker
Version:
Angular Date Time Picker
123 lines • 19.3 kB
JavaScript
/**
* date-time-adapter.class
*/
import { Subject } from 'rxjs';
import { inject, InjectionToken, LOCALE_ID } from '@angular/core';
/** InjectionToken for date time picker that can be used to override default locale code. */
export const OWL_DATE_TIME_LOCALE = new InjectionToken('OWL_DATE_TIME_LOCALE', {
providedIn: 'root',
factory: OWL_DATE_TIME_LOCALE_FACTORY
});
/** @docs-private */
export function OWL_DATE_TIME_LOCALE_FACTORY() {
return inject(LOCALE_ID);
}
/** Provider for OWL_DATE_TIME_LOCALE injection token. */
export const OWL_DATE_TIME_LOCALE_PROVIDER = {
provide: OWL_DATE_TIME_LOCALE,
useExisting: LOCALE_ID
};
export class DateTimeAdapter {
constructor() {
/** A stream that emits when the locale changes. */
this._localeChanges = new Subject();
this.firstMonthOfTheYear = 0;
this.firstDayOfTheWeek = 0;
/** total milliseconds in a day. */
this.millisecondsInDay = 86400000;
/** total milliseconds in a minute. */
this.milliseondsInMinute = 60000;
}
get localeChanges() {
return this._localeChanges;
}
/**
* Compare two given dates
* 1 if the first date is after the second,
* -1 if the first date is before the second
* 0 if dates are equal.
* */
compare(first, second) {
if (!this.isValid(first) || !this.isValid(second)) {
throw Error('JSNativeDate: Cannot compare invalid dates.');
}
const dateFirst = this.clone(first);
const dateSecond = this.clone(second);
const diff = this.getTime(dateFirst) - this.getTime(dateSecond);
if (diff < 0) {
return -1;
}
else if (diff > 0) {
return 1;
}
else {
// Return 0 if diff is 0; return NaN if diff is NaN
return diff;
}
}
/**
* Check if two given dates are in the same year
* 1 if the first date's year is after the second,
* -1 if the first date's year is before the second
* 0 if two given dates are in the same year
* */
compareYear(first, second) {
if (!this.isValid(first) || !this.isValid(second)) {
throw Error('JSNativeDate: Cannot compare invalid dates.');
}
const yearLeft = this.getYear(first);
const yearRight = this.getYear(second);
const diff = yearLeft - yearRight;
if (diff < 0) {
return -1;
}
else if (diff > 0) {
return 1;
}
else {
return 0;
}
}
/**
* Attempts to deserialize a value to a valid date object. This is different from parsing in that
* deserialize should only accept non-ambiguous, locale-independent formats (e.g. a ISO 8601
* string). The default implementation does not allow any deserialization, it simply checks that
* the given value is already a valid date object or null. The `<mat-datepicker>` will call this
* method on all of it's `@Input()` properties that accept dates. It is therefore possible to
* support passing values from your backend directly to these properties by overriding this method
* to also deserialize the format used by your backend.
*/
deserialize(value) {
if (value == null ||
(this.isDateInstance(value) && this.isValid(value))) {
return value;
}
return this.invalid();
}
/**
* Sets the locale used for all dates.
*/
setLocale(locale) {
this.locale = locale;
this._localeChanges.next(locale);
}
/**
* Get the locale used for all dates.
* */
getLocale() {
return this.locale;
}
/**
* Clamp the given date between min and max dates.
*/
clampDate(date, min, max) {
if (min && this.compare(date, min) < 0) {
return min;
}
if (max && this.compare(date, max) > 0) {
return max;
}
return date;
}
}
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* date-time-adapter.class\n */\nimport { Observable, Subject } from 'rxjs';\nimport { inject, InjectionToken, LOCALE_ID } from '@angular/core';\n\n/** InjectionToken for date time picker that can be used to override default locale code. */\nexport const OWL_DATE_TIME_LOCALE = new InjectionToken<string>(\n    'OWL_DATE_TIME_LOCALE',\n    {\n        providedIn: 'root',\n        factory: OWL_DATE_TIME_LOCALE_FACTORY\n    }\n);\n\n/** @docs-private */\nexport function OWL_DATE_TIME_LOCALE_FACTORY(): string {\n    return inject(LOCALE_ID);\n}\n\n/** Provider for OWL_DATE_TIME_LOCALE injection token. */\nexport const OWL_DATE_TIME_LOCALE_PROVIDER = {\n    provide: OWL_DATE_TIME_LOCALE,\n    useExisting: LOCALE_ID\n};\n\nexport abstract class DateTimeAdapter<T> {\n    /** The locale to use for all dates. */\n    protected locale: any;\n\n    /** A stream that emits when the locale changes. */\n    protected _localeChanges = new Subject<string>();\n    get localeChanges(): Observable<string> {\n        return this._localeChanges;\n    }\n\n\tpublic firstMonthOfTheYear: number = 0;\n\tpublic firstDayOfTheWeek: number = 0;\n    \n    /** total milliseconds in a day. */\n    protected readonly millisecondsInDay = 86400000;\n\n    /** total milliseconds in a minute. */\n    protected readonly milliseondsInMinute = 60000;\n\n    /**\n     * Get the year of the given date\n     */\n    abstract getYear(date: T): number;\n\n    /**\n     * Get the month of the given date\n     * 0 -- January\n     * 11 -- December\n     * */\n    abstract getMonth(date: T): number;\n\n    /**\n     * Get the day of the week of the given date\n     * 0 -- Sunday\n     * 6 -- Saturday\n     * */\n    abstract getDay(date: T): number;\n\n    /**\n     * Get the day num of the given date\n     */\n    abstract getDate(date: T): number;\n\n    /**\n     * Get the hours of the given date\n     */\n    abstract getHours(date: T): number;\n\n    /**\n     * Get the minutes of the given date\n     */\n    abstract getMinutes(date: T): number;\n\n    /**\n     * Get the seconds of the given date\n     */\n    abstract getSeconds(date: T): number;\n\n    /**\n     * Get the milliseconds timestamp of the given date\n     */\n    abstract getTime(date: T): number;\n\n    /**\n     * Gets the number of days in the month of the given date.\n     */\n    abstract getNumDaysInMonth(date: T): number;\n\n    /**\n     * Get the number of calendar days between the given dates.\n     * If dateLeft is before dateRight, it would return positive value\n     * If dateLeft is after dateRight, it would return negative value\n     */\n    abstract differenceInCalendarDays(dateLeft: T, dateRight: T): number;\n\n    /**\n     * Gets the name for the year of the given date.\n     */\n    abstract getYearName(date: T): string;\n\n    /**\n     * Get a list of month names\n     */\n    abstract getMonthNames(style: 'long' | 'short' | 'narrow'): string[];\n\n    /**\n     * Get a list of week names\n     */\n    abstract getDayOfWeekNames(style: 'long' | 'short' | 'narrow'): string[];\n\n    /**\n     * Gets a list of names for the dates of the month.\n     */\n    abstract getDateNames(): string[];\n\n    /**\n     * Return a Date object as a string, using the ISO standard\n     */\n    abstract toIso8601(date: T): string;\n\n    /**\n     * Check if the give dates are equal\n     */\n    abstract isEqual(dateLeft: T, dateRight: T): boolean;\n\n    /**\n     * Check if the give dates are the same day\n     */\n    abstract isSameDay(dateLeft: T, dateRight: T): boolean;\n\n    /**\n     * Checks whether the given date is valid.\n     */\n    abstract isValid(date: T): boolean;\n\n    /**\n     * Gets date instance that is not valid.\n     */\n    abstract invalid(): T;\n\n    /**\n     * Checks whether the given object is considered a date instance by this DateTimeAdapter.\n     */\n    abstract isDateInstance(obj: any): boolean;\n\n    /**\n     * Add the specified number of years to the given date\n     */\n    abstract addCalendarYears(date: T, amount: number): T;\n\n    /**\n     * Add the specified number of months to the given date\n     */\n    abstract addCalendarMonths(date: T, amount: number): T;\n\n    /**\n     * Add the specified number of days to the given date\n     */\n    abstract addCalendarDays(date: T, amount: number): T;\n\n    /**\n     * Set the hours to the given date.\n     */\n    abstract setHours(date: T, amount: number): T;\n\n    /**\n     * Set the minutes to the given date.\n     */\n    abstract setMinutes(date: T, amount: number): T;\n\n    /**\n     * Set the seconds to the given date.\n     */\n    abstract setSeconds(date: T, amount: number): T;\n\n    /**\n     * Creates a date with the given year, month, date, hour, minute and second. Does not allow over/under-flow of the\n     * month and date.\n     */\n    abstract createDate(year: number, month: number, date: number): T;\n    abstract createDate(\n        year: number,\n        month: number,\n        date: number,\n        hours: number,\n        minutes: number,\n        seconds: number\n    ): T;\n\n    /**\n     * Clone the given date\n     */\n    abstract clone(date: T): T;\n\n    /**\n     * Get a new moment\n     * */\n    abstract now(): T;\n\n    /**\n     * Formats a date as a string according to the given format.\n     */\n    abstract format(date: T, displayFormat: any): string;\n\n    /**\n     * Parse a user-provided value to a Date Object\n     */\n    abstract parse(value: any, parseFormat: any): T | null;\n\n    /**\n     * Compare two given dates\n     * 1 if the first date is after the second,\n     * -1 if the first date is before the second\n     * 0 if dates are equal.\n     * */\n    compare(first: T, second: T): number {\n        if (!this.isValid(first) || !this.isValid(second)) {\n            throw Error('JSNativeDate: Cannot compare invalid dates.');\n        }\n\n        const dateFirst = this.clone(first);\n        const dateSecond = this.clone(second);\n\n        const diff = this.getTime(dateFirst) - this.getTime(dateSecond);\n\n        if (diff < 0) {\n            return -1;\n        } else if (diff > 0) {\n            return 1;\n        } else {\n            // Return 0 if diff is 0; return NaN if diff is NaN\n            return diff;\n        }\n    }\n\n    /**\n     * Check if two given dates are in the same year\n     * 1 if the first date's year is after the second,\n     * -1 if the first date's year is before the second\n     * 0 if two given dates are in the same year\n     * */\n    compareYear(first: T, second: T): number {\n        if (!this.isValid(first) || !this.isValid(second)) {\n            throw Error('JSNativeDate: Cannot compare invalid dates.');\n        }\n\n        const yearLeft = this.getYear(first);\n        const yearRight = this.getYear(second);\n\n        const diff = yearLeft - yearRight;\n\n        if (diff < 0) {\n            return -1;\n        } else if (diff > 0) {\n            return 1;\n        } else {\n            return 0;\n        }\n    }\n\n    /**\n     * Attempts to deserialize a value to a valid date object. This is different from parsing in that\n     * deserialize should only accept non-ambiguous, locale-independent formats (e.g. a ISO 8601\n     * string). The default implementation does not allow any deserialization, it simply checks that\n     * the given value is already a valid date object or null. The `<mat-datepicker>` will call this\n     * method on all of it's `@Input()` properties that accept dates. It is therefore possible to\n     * support passing values from your backend directly to these properties by overriding this method\n     * to also deserialize the format used by your backend.\n     */\n    deserialize(value: any): T | null {\n        if (\n            value == null ||\n            (this.isDateInstance(value) && this.isValid(value))\n        ) {\n            return value;\n        }\n        return this.invalid();\n    }\n\n    /**\n     * Sets the locale used for all dates.\n     */\n    setLocale(locale: string) {\n        this.locale = locale;\n        this._localeChanges.next(locale);\n    }\n\n     /**\n     * Get the locale used for all dates.\n     * */\n    getLocale() {\n        return this.locale;\n    }\n\n    /**\n     * Clamp the given date between min and max dates.\n     */\n    clampDate(date: T, min?: T | null, max?: T | null): T {\n        if (min && this.compare(date, min) < 0) {\n            return min;\n        }\n        if (max && this.compare(date, max) > 0) {\n            return max;\n        }\n        return date;\n    }\n}\n"]}