81 lines
2.1 KiB
JavaScript
81 lines
2.1 KiB
JavaScript
/* global prefs */
|
|
/* exported colorScheme */
|
|
|
|
'use strict';
|
|
|
|
const colorScheme = (() => {
|
|
const changeListeners = new Set();
|
|
const kSTATE = 'schemeSwitcher.enabled';
|
|
const kSTART = 'schemeSwitcher.nightStart';
|
|
const kEND = 'schemeSwitcher.nightEnd';
|
|
const SCHEMES = ['dark', 'light', 'dark!', 'light!']; // ! = only if schemeSwitcher is enabled
|
|
const isDark = {never: null, system: false, time: false};
|
|
let isDarkNow = false;
|
|
|
|
prefs.subscribe(kSTATE, () => emitChange());
|
|
prefs.subscribe([kSTART, kEND], (key, value) => {
|
|
updateTimePreferDark();
|
|
createAlarm(key, value);
|
|
}, {runNow: true});
|
|
chrome.alarms.onAlarm.addListener(({name}) => {
|
|
if (name === kSTART || name === kEND) {
|
|
updateTimePreferDark();
|
|
}
|
|
});
|
|
|
|
return {
|
|
SCHEMES,
|
|
onChange(listener) {
|
|
changeListeners.add(listener);
|
|
},
|
|
shouldIncludeStyle({preferScheme: val}) {
|
|
return !SCHEMES.includes(val) ||
|
|
!val.endsWith('!') && prefs.get(kSTATE) === 'never' ||
|
|
val.startsWith('dark') === isDarkNow;
|
|
},
|
|
updateSystemPreferDark(val) {
|
|
emitChange('system', val);
|
|
return true;
|
|
},
|
|
};
|
|
|
|
function createAlarm(key, value) {
|
|
const date = new Date();
|
|
const [h, m] = value.split(':');
|
|
date.setHours(h, m, 0, 0);
|
|
if (date.getTime() < Date.now()) {
|
|
date.setDate(date.getDate() + 1);
|
|
}
|
|
chrome.alarms.create(key, {
|
|
when: date.getTime(),
|
|
periodInMinutes: 24 * 60,
|
|
});
|
|
}
|
|
|
|
function updateTimePreferDark() {
|
|
const now = Date.now() - new Date().setHours(0, 0, 0, 0);
|
|
const start = calcTime(kSTART);
|
|
const end = calcTime(kEND);
|
|
const val = start > end ?
|
|
now >= start || now < end :
|
|
now >= start && now < end;
|
|
emitChange('time', val);
|
|
}
|
|
|
|
function calcTime(key) {
|
|
const [h, m] = prefs.get(key).split(':');
|
|
return (h * 3600 + m * 60) * 1000;
|
|
}
|
|
|
|
function emitChange(type, val) {
|
|
if (type) {
|
|
if (isDark[type] === val) return;
|
|
isDark[type] = val;
|
|
}
|
|
isDarkNow = isDark[prefs.get(kSTATE)];
|
|
for (const listener of changeListeners) {
|
|
listener(isDarkNow);
|
|
}
|
|
}
|
|
})();
|