Site/programmer/static/programmer/js/theme-switcher.js

72 lines
3.1 KiB
JavaScript

// theme-switcher.js
document.addEventListener('DOMContentLoaded', function () {
const themeToggle = document.getElementById('theme-toggle');
const mobileThemeToggle = document.getElementById('mobile-theme-toggle');
const themeCSS1C = document.getElementById('theme-css-1c');
// FIX: Derive the base path once so we never rely on the current href value.
// href.replace() was silently failing when the filename didn't match exactly.
const hljsBasePath = themeCSS1C
? themeCSS1C.href.replace(/1c-(light|dark)\.min\.css$/, '')
: null;
// console.log('Initial href:', themeCSS1C?.href);
// console.log('Computed basePath:', hljsBasePath);
// ── Theme application ────────────────────────────────────────────────────
function applyTheme(isDark) {
if (isDark) {
document.body.classList.add('theme-dark');
if (themeCSS1C && hljsBasePath) {
themeCSS1C.href = hljsBasePath + '1c-dark.min.css';
}
} else {
document.body.classList.remove('theme-dark');
if (themeCSS1C && hljsBasePath) {
themeCSS1C.href = hljsBasePath + '1c-light.min.css';
}
}
// FIX: CSS defines checked = dark (moon icon).
// Previously the handlers were calling the wrong function on check/uncheck.
if (themeToggle) themeToggle.checked = isDark;
if (mobileThemeToggle) mobileThemeToggle.checked = isDark;
localStorage.setItem('theme', isDark ? 'dark' : 'light');
}
// ── Initialise from saved preference ────────────────────────────────────
const savedTheme = localStorage.getItem('theme');
applyTheme(savedTheme === 'dark');
// ── Event listeners ──────────────────────────────────────────────────────
// FIX: Both toggles now call the same applyTheme() — no duplicated logic,
// and both are always kept in sync with each other automatically.
if (themeToggle) {
themeToggle.addEventListener('change', function () {
applyTheme(this.checked);
});
}
if (mobileThemeToggle) {
mobileThemeToggle.addEventListener('change', function () {
applyTheme(this.checked);
});
}
// ── CSS error handling ───────────────────────────────────────────────────
// FIX: was referencing undefined variable `themeCSS` instead of `themeCSS1C`
if (themeCSS1C) {
themeCSS1C.onerror = function () {
console.error('Ошибка загрузки CSS файла темы подсветки кода');
// Fall back to light theme
applyTheme(false);
};
}
});