number-and-date-inputs.js
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"use strict";
const { parseFloatingPointNumber } = require("./strings");
const {
parseDateString,
parseLocalDateAndTimeString,
parseMonthString,
parseTimeString,
parseWeekString,
serializeDate,
serializeMonth,
serializeNormalizedDateAndTime,
serializeTime,
serializeWeek,
parseDateAsWeek
} = require("./dates-and-times");
// Necessary because Date.UTC() treats year within [0, 99] as [1900, 1999].
function getUTCMs(year, month = 1, day = 1, hour = 0, minute = 0, second = 0, millisecond = 0) {
if (year > 99 || year < 0) {
return Date.UTC(year, month - 1, day, hour, minute, second, millisecond);
}
const d = new Date(0);
d.setUTCFullYear(year);
d.setUTCMonth(month - 1);
d.setUTCDate(day);
d.setUTCHours(hour);
d.setUTCMinutes(minute);
d.setUTCSeconds(second, millisecond);
return d.valueOf();
}
const dayOfWeekRelMondayLUT = [-1, 0, 1, 2, 3, -3, -2];
exports.convertStringToNumberByType = {
// https://html.spec.whatwg.org/multipage/input.html#date-state-(type=date):concept-input-value-string-number
date(input) {
const date = parseDateString(input);
if (date === null) {
return null;
}
return getUTCMs(date.year, date.month, date.day);
},
// https://html.spec.whatwg.org/multipage/input.html#month-state-(type=month):concept-input-value-string-number
month(input) {
const date = parseMonthString(input);
if (date === null) {
return null;
}
return (date.year - 1970) * 12 + (date.month - 1);
},
// https://html.spec.whatwg.org/multipage/input.html#week-state-(type=week):concept-input-value-string-number
week(input) {
const date = parseWeekString(input);
if (date === null) {
return null;
}
const dateObj = new Date(getUTCMs(date.year));
// An HTML week starts on Monday, while 0 represents Sunday. Account for such.
const dayOfWeekRelMonday = dayOfWeekRelMondayLUT[dateObj.getUTCDay()];
return dateObj.setUTCDate(1 + 7 * (date.week - 1) - dayOfWeekRelMonday);
},
// https://html.spec.whatwg.org/multipage/input.html#time-state-(type=time):concept-input-value-string-number
time(input) {
const time = parseTimeString(input);
if (time === null) {
return null;
}
return ((time.hour * 60 + time.minute) * 60 + time.second) * 1000 + time.millisecond;
},
// https://html.spec.whatwg.org/multipage/input.html#local-date-and-time-state-(type=datetime-local):concept-input-value-string-number
"datetime-local"(input) {
const dateAndTime = parseLocalDateAndTimeString(input);
if (dateAndTime === null) {
return null;
}
const { date: { year, month, day }, time: { hour, minute, second, millisecond } } = dateAndTime;
// Doesn't quite matter whether or not UTC is used, since the offset from 1970-01-01 local time is returned.
return getUTCMs(year, month, day, hour, minute, second, millisecond);
},
// https://html.spec.whatwg.org/multipage/input.html#number-state-(type=number):concept-input-value-string-number
number: parseFloatingPointNumber,
// https://html.spec.whatwg.org/multipage/input.html#range-state-(type=range):concept-input-value-string-number
range: parseFloatingPointNumber
};
exports.convertStringToDateByType = {
date(input) {
const parsedInput = exports.convertStringToNumberByType.date(input);
return parsedInput === null ? null : new Date(parsedInput);
},
// https://html.spec.whatwg.org/multipage/input.html#month-state-(type=month):concept-input-value-string-number
month(input) {
const parsedMonthString = parseMonthString(input);
if (parsedMonthString === null) {
return null;
}
const date = new Date(0);
date.setUTCFullYear(parsedMonthString.year);
date.setUTCMonth(parsedMonthString.month - 1);
return date;
},
week(input) {
const parsedInput = exports.convertStringToNumberByType.week(input);
return parsedInput === null ? null : new Date(parsedInput);
},
time(input) {
const parsedInput = exports.convertStringToNumberByType.time(input);
return parsedInput === null ? null : new Date(parsedInput);
},
"datetime-local"(input) {
const parsedInput = exports.convertStringToNumberByType["datetime-local"](input);
return parsedInput === null ? null : new Date(parsedInput);
}
};
exports.serializeDateByType = {
date(input) {
return serializeDate({
year: input.getUTCFullYear(),
month: input.getUTCMonth() + 1,
day: input.getUTCDate()
});
},
month(input) {
return serializeMonth({
year: input.getUTCFullYear(),
month: input.getUTCMonth() + 1
});
},
week(input) {
return serializeWeek(parseDateAsWeek(input));
},
time(input) {
return serializeTime({
hour: input.getUTCHours(),
minute: input.getUTCMinutes(),
second: input.getUTCSeconds(),
millisecond: input.getUTCMilliseconds()
});
},
"datetime-local"(input) {
return serializeNormalizedDateAndTime({
date: {
year: input.getUTCFullYear(),
month: input.getUTCMonth() + 1,
day: input.getUTCDate()
},
time: {
hour: input.getUTCHours(),
minute: input.getUTCMinutes(),
second: input.getUTCSeconds(),
millisecond: input.getUTCMilliseconds()
}
});
}
};
exports.convertNumberToStringByType = {
// https://html.spec.whatwg.org/multipage/input.html#date-state-(type=date):concept-input-value-string-number
date(input) {
return exports.serializeDateByType.date(new Date(input));
},
// https://html.spec.whatwg.org/multipage/input.html#month-state-(type=month):concept-input-value-string-date
month(input) {
const year = 1970 + Math.floor(input / 12);
const month = input % 12;
const date = new Date();
date.setUTCFullYear(year);
date.setUTCMonth(month);
return exports.serializeDateByType.month(date);
},
// https://html.spec.whatwg.org/multipage/input.html#week-state-(type=week):concept-input-value-string-date
week(input) {
return exports.serializeDateByType.week(new Date(input));
},
// https://html.spec.whatwg.org/multipage/input.html#time-state-(type=time):concept-input-value-string-date
time(input) {
return exports.serializeDateByType.time(new Date(input));
},
// https://html.spec.whatwg.org/multipage/input.html#local-date-and-time-state-(type=datetime-local):concept-input-value-number-string
"datetime-local"(input) {
return exports.serializeDateByType["datetime-local"](new Date(input));
},
// https://html.spec.whatwg.org/multipage/input.html#number-state-(type=number):concept-input-value-number-string
number(input) {
return input.toString();
},
// https://html.spec.whatwg.org/multipage/input.html#range-state-(type=range):concept-input-value-number-string
range(input) {
return input.toString();
}
};