112 lines
3.1 KiB
JavaScript
112 lines
3.1 KiB
JavaScript
/**
|
|
* theme-init.js — Light/Dark mode initialization for Moko Cassiopeia
|
|
*
|
|
* @package Joomla.Site
|
|
* @subpackage Templates.Moko-Cassiopeia
|
|
* @file /media/templates/site/moko-cassiopeia/js/theme-init.js
|
|
* @version 2.0
|
|
*
|
|
* @copyright (C) 2025 Moko Consulting
|
|
* @author Jonathan Miller
|
|
* @website https://mokoconsulting.tech
|
|
* @email hello@mokoconsulting.tech
|
|
* @phone +1 (931) 279-6313
|
|
*
|
|
* SPDX-License-Identifier: GPL-3.0-or-later
|
|
*
|
|
* This file is part of a Moko Consulting project.
|
|
*
|
|
* This program is free software: you can redistribute it and/or modify it
|
|
* under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 3 of the License, or (at
|
|
* your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <https://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
(function (win, doc) {
|
|
"use strict";
|
|
|
|
var storageKey = "theme"; // localStorage key
|
|
var mql = win.matchMedia("(prefers-color-scheme: dark)");
|
|
var root = doc.documentElement;
|
|
|
|
/**
|
|
* Apply theme to <html>, syncing both data-bs-theme and data-aria-theme.
|
|
* @param {"light"|"dark"} theme
|
|
*/
|
|
function applyTheme(theme) {
|
|
root.setAttribute("data-bs-theme", theme);
|
|
root.setAttribute("data-aria-theme", theme);
|
|
try { localStorage.setItem(storageKey, theme); } catch (e) {}
|
|
}
|
|
|
|
/**
|
|
* Clear stored preference so system preference is followed.
|
|
*/
|
|
function clearStored() {
|
|
try { localStorage.removeItem(storageKey); } catch (e) {}
|
|
}
|
|
|
|
/**
|
|
* Determine system theme.
|
|
*/
|
|
function systemTheme() {
|
|
return mql.matches ? "dark" : "light";
|
|
}
|
|
|
|
/**
|
|
* Initialize theme on load.
|
|
*/
|
|
function init() {
|
|
var stored = null;
|
|
try { stored = localStorage.getItem(storageKey); } catch (e) {}
|
|
|
|
var theme = stored ? stored : systemTheme();
|
|
applyTheme(theme);
|
|
|
|
// Listen for system changes only if Auto mode (no stored)
|
|
var onChange = function () {
|
|
if (!localStorage.getItem(storageKey)) {
|
|
applyTheme(systemTheme());
|
|
}
|
|
};
|
|
if (typeof mql.addEventListener === "function") {
|
|
mql.addEventListener("change", onChange);
|
|
} else if (typeof mql.addListener === "function") {
|
|
mql.addListener(onChange);
|
|
}
|
|
|
|
// Hook toggle UI if present
|
|
var switchEl = doc.getElementById("themeSwitch");
|
|
var autoBtn = doc.getElementById("themeAuto");
|
|
|
|
if (switchEl) {
|
|
switchEl.checked = (theme === "dark");
|
|
switchEl.addEventListener("change", function () {
|
|
var choice = switchEl.checked ? "dark" : "light";
|
|
applyTheme(choice);
|
|
});
|
|
}
|
|
|
|
if (autoBtn) {
|
|
autoBtn.addEventListener("click", function () {
|
|
clearStored();
|
|
applyTheme(systemTheme());
|
|
});
|
|
}
|
|
}
|
|
|
|
if (doc.readyState === "loading") {
|
|
doc.addEventListener("DOMContentLoaded", init);
|
|
} else {
|
|
init();
|
|
}
|
|
})(window, document);
|