drupal/core/misc/timezone.js

64 lines
1.9 KiB
JavaScript

/**
* DO NOT EDIT THIS FILE.
* See the following change record for more information,
* https://www.drupal.org/node/2815083
* @preserve
**/
(function ($, Drupal) {
Drupal.behaviors.setTimezone = {
attach(context, settings) {
const timezone = once('timezone', '.timezone-detect', context);
if (timezone.length) {
const tz = new Intl.DateTimeFormat().resolvedOptions().timeZone;
if (tz && $(timezone).find(`option[value="${tz}"]`).length) {
timezone.forEach(item => {
item.value = tz;
});
return;
}
const dateString = Date();
const matches = dateString.match(/\(([A-Z]{3,5})\)/);
const abbreviation = matches ? matches[1] : 0;
const dateNow = new Date();
const offsetNow = dateNow.getTimezoneOffset() * -60;
const dateJan = new Date(dateNow.getFullYear(), 0, 1, 12, 0, 0, 0);
const dateJul = new Date(dateNow.getFullYear(), 6, 1, 12, 0, 0, 0);
const offsetJan = dateJan.getTimezoneOffset() * -60;
const offsetJul = dateJul.getTimezoneOffset() * -60;
let isDaylightSavingTime;
if (offsetJan === offsetJul) {
isDaylightSavingTime = '';
} else if (Math.max(offsetJan, offsetJul) === offsetNow) {
isDaylightSavingTime = 1;
} else {
isDaylightSavingTime = 0;
}
const path = `system/timezone/${abbreviation}/${offsetNow}/${isDaylightSavingTime}`;
$.ajax({
async: false,
url: Drupal.url(path),
data: {
date: dateString
},
dataType: 'json',
success(data) {
if (data) {
document.querySelectorAll('.timezone-detect').forEach(item => {
item.value = data;
});
}
}
});
}
}
};
})(jQuery, Drupal);