@blueprintjs/datetime
Version:
Components for interacting with dates and times
201 lines • 7.33 kB
JavaScript
/*
* Copyright 2015 Palantir Technologies, Inc. All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import { Months } from "./months";
export function isDateValid(date) {
return date instanceof Date && !isNaN(date.valueOf());
}
export function areEqual(date1, date2) {
if (date1 == null && date2 == null) {
return true;
}
else if (date1 == null || date2 == null) {
return false;
}
else {
return date1.getTime() === date2.getTime();
}
}
export function areRangesEqual(dateRange1, dateRange2) {
if (dateRange1 == null && dateRange2 == null) {
return true;
}
else if (dateRange1 == null || dateRange2 == null) {
return false;
}
else {
var start1 = dateRange1[0], end1 = dateRange1[1];
var start2 = dateRange2[0], end2 = dateRange2[1];
var areStartsEqual = (start1 == null && start2 == null) || areSameDay(start1, start2);
var areEndsEqual = (end1 == null && end2 == null) || areSameDay(end1, end2);
return areStartsEqual && areEndsEqual;
}
}
export function areSameDay(date1, date2) {
return areSameMonth(date1, date2) && date1.getDate() === date2.getDate();
}
export function areSameMonth(date1, date2) {
return (date1 != null &&
date2 != null &&
date1.getMonth() === date2.getMonth() &&
date1.getFullYear() === date2.getFullYear());
}
export function areSameTime(date1, date2) {
return (date1 != null &&
date2 != null &&
date1.getHours() === date2.getHours() &&
date1.getMinutes() === date2.getMinutes() &&
date1.getSeconds() === date2.getSeconds() &&
date1.getMilliseconds() === date2.getMilliseconds());
}
export function clone(d) {
return new Date(d.getTime());
}
export function isDayInRange(date, dateRange, exclusive) {
if (exclusive === void 0) { exclusive = false; }
if (date == null) {
return false;
}
var day = clone(date);
var start = clone(dateRange[0]);
var end = clone(dateRange[1]);
day.setHours(0, 0, 0, 0);
start.setHours(0, 0, 0, 0);
end.setHours(0, 0, 0, 0);
return start <= day && day <= end && (!exclusive || (!areSameDay(start, day) && !areSameDay(day, end)));
}
export function isDayRangeInRange(innerRange, outerRange) {
return ((innerRange[0] == null || isDayInRange(innerRange[0], outerRange)) &&
(innerRange[1] == null || isDayInRange(innerRange[1], outerRange)));
}
export function isMonthInRange(date, dateRange) {
if (date == null) {
return false;
}
var day = clone(date);
var start = clone(dateRange[0]);
var end = clone(dateRange[1]);
day.setDate(1);
start.setDate(1);
end.setDate(1);
day.setHours(0, 0, 0, 0);
start.setHours(0, 0, 0, 0);
end.setHours(0, 0, 0, 0);
return start <= day && day <= end;
}
export var isTimeEqualOrGreaterThan = function (time, timeToCompare) { return time.getTime() >= timeToCompare.getTime(); };
export var isTimeEqualOrSmallerThan = function (time, timeToCompare) { return time.getTime() <= timeToCompare.getTime(); };
export function isTimeInRange(date, minDate, maxDate) {
var time = getDateOnlyWithTime(date);
var minTime = getDateOnlyWithTime(minDate);
var maxTime = getDateOnlyWithTime(maxDate);
var isTimeGreaterThanMinTime = isTimeEqualOrGreaterThan(time, minTime);
var isTimeSmallerThanMaxTime = isTimeEqualOrSmallerThan(time, maxTime);
if (isTimeEqualOrSmallerThan(maxTime, minTime)) {
return isTimeGreaterThanMinTime || isTimeSmallerThanMaxTime;
}
return isTimeGreaterThanMinTime && isTimeSmallerThanMaxTime;
}
export function getTimeInRange(time, minTime, maxTime) {
if (areSameTime(minTime, maxTime)) {
return maxTime;
}
else if (isTimeInRange(time, minTime, maxTime)) {
return time;
}
else if (isTimeSameOrAfter(time, maxTime)) {
return maxTime;
}
return minTime;
}
/**
* Returns true if the time part of `date` is later than or equal to the time
* part of `dateToCompare`. The day, month, and year parts will not be compared.
*/
export function isTimeSameOrAfter(date, dateToCompare) {
var time = getDateOnlyWithTime(date);
var timeToCompare = getDateOnlyWithTime(dateToCompare);
return isTimeEqualOrGreaterThan(time, timeToCompare);
}
/**
* @returns a Date at the exact time-wise midpoint between startDate and endDate
*/
export function getDateBetween(dateRange) {
var start = dateRange[0].getTime();
var end = dateRange[1].getTime();
var middle = start + (end - start) * 0.5;
return new Date(middle);
}
export function getDateTime(date, time) {
if (date == null) {
return null;
}
else if (time == null) {
// cannot use default argument because `null` is a common value in this package.
return new Date(date.getFullYear(), date.getMonth(), date.getDate(), 0, 0, 0, 0);
}
else {
return new Date(date.getFullYear(), date.getMonth(), date.getDate(), time.getHours(), time.getMinutes(), time.getSeconds(), time.getMilliseconds());
}
}
export function getDateOnlyWithTime(date) {
return new Date(0, 0, 0, date.getHours(), date.getMinutes(), date.getSeconds(), date.getMilliseconds());
}
export function getDatePreviousMonth(date) {
if (date.getMonth() === Months.JANUARY) {
return new Date(date.getFullYear() - 1, Months.DECEMBER);
}
else {
return new Date(date.getFullYear(), date.getMonth() - 1);
}
}
export function getDateNextMonth(date) {
if (date.getMonth() === Months.DECEMBER) {
return new Date(date.getFullYear() + 1, Months.JANUARY);
}
else {
return new Date(date.getFullYear(), date.getMonth() + 1);
}
}
export function convert24HourMeridiem(hour, toPm) {
if (hour < 0 || hour > 23) {
throw new Error("hour must be between [0,23] inclusive: got ".concat(hour));
}
return toPm ? (hour % 12) + 12 : hour % 12;
}
export function getIsPmFrom24Hour(hour) {
if (hour < 0 || hour > 23) {
throw new Error("hour must be between [0,23] inclusive: got ".concat(hour));
}
return hour >= 12;
}
export function get12HourFrom24Hour(hour) {
if (hour < 0 || hour > 23) {
throw new Error("hour must be between [0,23] inclusive: got ".concat(hour));
}
var newHour = hour % 12;
return newHour === 0 ? 12 : newHour;
}
export function get24HourFrom12Hour(hour, isPm) {
if (hour < 1 || hour > 12) {
throw new Error("hour must be between [1,12] inclusive: got ".concat(hour));
}
var newHour = hour === 12 ? 0 : hour;
return isPm ? newHour + 12 : newHour;
}
export function isToday(date) {
return areSameDay(date, new Date());
}
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