transmission/web/src/prefs.js

128 lines
3.4 KiB
JavaScript
Raw Normal View History

/* @license This file Copyright (C) 2020-2022 Mnemosyne LLC.
It may be used under GPLv2 (SPDX: GPL-2.0-only), GPLv3 (SPDX: GPL-3.0-only),
or any future license endorsed by Mnemosyne LLC.
License text can be found in the licenses/ folder. */
import { debounce } from './utils.js';
export class Prefs extends EventTarget {
constructor() {
super();
this._cache = {};
this.dispatchPrefsChange = debounce((key, old_value, value) => {
const event = new Event('change');
Object.assign(event, { key, old_value, value });
this.dispatchEvent(event);
});
for (const [key, default_value] of Object.entries(Prefs._Defaults)) {
// populate the cache...
this._set(key, Prefs._getCookie(key, default_value));
// add property getter/setters...
Object.defineProperty(this, key.replaceAll('-', '_'), {
get: () => this._get(key),
set: (value) => {
this._set(key, value);
},
});
}
Object.seal(this);
}
entries() {
return Object.entries(this._cache);
}
keys() {
return Object.keys(this._cache);
}
_get(key) {
const { _cache } = this;
if (!Object.prototype.hasOwnProperty.call(_cache, key)) {
throw new Error(key);
}
return _cache[key];
}
_set(key, value) {
const { _cache } = this;
const old_value = _cache[key];
if (old_value !== value) {
_cache[key] = value;
Prefs._setCookie(key, value);
this.dispatchPrefsChange(key, old_value, value);
}
}
static _setCookie(key, value) {
const date = new Date();
date.setFullYear(date.getFullYear() + 1);
// eslint-disable-next-line unicorn/no-document-cookie
document.cookie = `${key}=${value}; SameSite=Strict; expires=${date.toGMTString()}`;
}
static _getCookie(key, fallback) {
const value = Prefs._readCookie(key);
if (value === null) {
return fallback;
}
if (value === 'true') {
return true;
}
if (value === 'false') {
return false;
}
if (/^\d+$/.test(value)) {
return Number.parseInt(value, 10);
}
return value;
}
static _readCookie(key) {
const value = `; ${document.cookie}`;
const parts = value.split(`; ${key}=`);
return parts.length === 2 ? parts.pop().split(';').shift() : null;
}
}
Prefs.AltSpeedEnabled = 'alt-speed-enabled';
Prefs.DisplayCompact = 'compact';
Prefs.DisplayFull = 'full';
Prefs.DisplayMode = 'display-mode';
Prefs.FilterActive = 'active';
Prefs.FilterAll = 'all';
Prefs.FilterDownloading = 'downloading';
Prefs.FilterFinished = 'finished';
Prefs.FilterMode = 'filter-mode';
Prefs.FilterPaused = 'paused';
Prefs.FilterSeeding = 'seeding';
Prefs.NotificationsEnabled = 'notifications-enabled';
Prefs.RefreshRate = 'refresh-rate-sec';
Prefs.SortAscending = 'ascending';
Prefs.SortByActivity = 'activity';
Prefs.SortByAge = 'age';
Prefs.SortByName = 'name';
Prefs.SortByProgress = 'progress';
Prefs.SortByQueue = 'queue';
Prefs.SortByRatio = 'ratio';
Prefs.SortBySize = 'size';
Prefs.SortByState = 'state';
Prefs.SortDescending = 'descending';
Prefs.SortDirection = 'sort-direction';
Prefs.SortMode = 'sort-mode';
Prefs._Defaults = {
[Prefs.AltSpeedEnabled]: false,
[Prefs.DisplayMode]: Prefs.DisplayFull,
[Prefs.FilterMode]: Prefs.FilterAll,
[Prefs.NotificationsEnabled]: false,
[Prefs.RefreshRate]: 5,
[Prefs.SortDirection]: Prefs.SortAscending,
[Prefs.SortMode]: Prefs.SortByName,
};