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32 lines
948 B
JavaScript
32 lines
948 B
JavaScript
const themeSwitcher = document.querySelector('.theme-switcher input');
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let currentTheme = localStorage.getItem('theme');
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let userHasManuallyChangedTheme = currentTheme !== null;
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function setTheme(theme) {
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document.documentElement.setAttribute('data-theme', theme);
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themeSwitcher.checked = theme === 'dark';
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localStorage.setItem('theme', theme);
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currentTheme = theme;
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}
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if (currentTheme) {
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setTheme(currentTheme);
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} else {
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const isSystemDark = window.matchMedia('(prefers-color-scheme: dark)').matches;
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setTheme(isSystemDark ? 'dark' : 'light');
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}
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function switchTheme(e) {
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const newTheme = e.target.checked ? 'dark' : 'light';
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setTheme(newTheme);
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userHasManuallyChangedTheme = true;
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}
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themeSwitcher.addEventListener('change', switchTheme, false);
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window.matchMedia('(prefers-color-scheme: dark)').addEventListener('change', (e) => {
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if (!userHasManuallyChangedTheme) {
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setTheme(e.matches ? 'dark' : 'light');
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}
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});
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