apple2js/js/prefs.ts

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2019-03-01 05:21:18 +00:00
/* Copyright 2010-2019 Will Scullin <scullin@scullinsteel.com>
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
* the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation. No representations are made about the suitability of this
* software for any purpose. It is provided "as is" without express or
* implied warranty.
*/
const havePrefs = typeof window.localStorage !== 'undefined';
export default class Prefs {
havePrefs() {
return havePrefs;
}
readPref(name: string, defaultValue: string | null = null) {
if (havePrefs) {
return window.localStorage.getItem(name) ?? defaultValue;
}
return defaultValue;
}
writePref(name: string, value: string) {
if (havePrefs) {
window.localStorage.setItem(name, value);
}
}
}