You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
57 lines
1.9 KiB
JavaScript
57 lines
1.9 KiB
JavaScript
'use strict';
|
|
{
|
|
window.addEventListener('load', function(e) {
|
|
|
|
function setTheme(mode) {
|
|
if (mode !== "light" && mode !== "dark" && mode !== "auto") {
|
|
console.error(`Got invalid theme mode: ${mode}. Resetting to auto.`);
|
|
mode = "auto";
|
|
}
|
|
document.documentElement.dataset.theme = mode;
|
|
localStorage.setItem("theme", mode);
|
|
}
|
|
|
|
function cycleTheme() {
|
|
const currentTheme = localStorage.getItem("theme") || "auto";
|
|
const prefersDark = window.matchMedia("(prefers-color-scheme: dark)").matches;
|
|
|
|
if (prefersDark) {
|
|
// Auto (dark) -> Light -> Dark
|
|
if (currentTheme === "auto") {
|
|
setTheme("light");
|
|
} else if (currentTheme === "light") {
|
|
setTheme("dark");
|
|
} else {
|
|
setTheme("auto");
|
|
}
|
|
} else {
|
|
// Auto (light) -> Dark -> Light
|
|
if (currentTheme === "auto") {
|
|
setTheme("dark");
|
|
} else if (currentTheme === "dark") {
|
|
setTheme("light");
|
|
} else {
|
|
setTheme("auto");
|
|
}
|
|
}
|
|
}
|
|
|
|
function initTheme() {
|
|
// set theme defined in localStorage if there is one, or fallback to auto mode
|
|
const currentTheme = localStorage.getItem("theme");
|
|
currentTheme ? setTheme(currentTheme) : setTheme("auto");
|
|
}
|
|
|
|
function setupTheme() {
|
|
// Attach event handlers for toggling themes
|
|
const buttons = document.getElementsByClassName("theme-toggle");
|
|
Array.from(buttons).forEach((btn) => {
|
|
btn.addEventListener("click", cycleTheme);
|
|
});
|
|
initTheme();
|
|
}
|
|
|
|
setupTheme();
|
|
});
|
|
}
|