104 lines
3.1 KiB
JavaScript
104 lines
3.1 KiB
JavaScript
// Theme Initialization
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(function () {
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// Get the default theme from the HTML data-theme attribute.
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const defaultTheme = document.documentElement.getAttribute("data-theme");
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// Set the data-default-theme attribute only if defaultTheme is not null.
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if (defaultTheme) {
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document.documentElement.setAttribute("data-default-theme", defaultTheme);
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}
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// Attempt to retrieve the current theme from the browser's local storage.
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const storedTheme = localStorage.getItem("theme");
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if (storedTheme && storedTheme !== "system") {
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document.documentElement.setAttribute("data-theme", storedTheme);
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} else if (defaultTheme && storedTheme !== "system") {
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document.documentElement.setAttribute("data-theme", defaultTheme);
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} else {
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// If no theme is found in local storage and no default theme is set, hand over control to the CSS.
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document.documentElement.removeAttribute("data-theme");
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}
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// Expose defaultTheme to the outer scope.
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window.defaultTheme = defaultTheme;
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})();
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// Icon Update and Theme Switching
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function setTheme(theme, saveToLocalStorage = false) {
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if (theme === "system") {
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document.documentElement.removeAttribute("data-theme");
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} else {
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document.documentElement.setAttribute("data-theme", theme);
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}
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if (saveToLocalStorage) {
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localStorage.setItem("theme", theme);
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} else {
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localStorage.removeItem("theme");
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}
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// Update icon class based on the selected theme.
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updateIconClass(theme);
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// Update the active button based on the selected theme.
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updateActiveButton(theme);
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}
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function resetTheme() {
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// Reset the theme to the default or system preference if no default is set.
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setTheme(window.defaultTheme || "system");
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}
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function switchTheme(theme) {
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if (theme === "system") {
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resetTheme();
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} else {
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setTheme(theme, true);
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}
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}
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function updateIconClass(theme) {
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const iconElement = document.querySelector("#theme-switcher summary .icon");
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// Remove any existing theme classes
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iconElement.classList.remove("light", "dark");
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// Add the appropriate class based on the selected theme
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if (theme === "light") {
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iconElement.classList.add("light");
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} else if (theme === "dark") {
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iconElement.classList.add("dark");
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}
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}
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function updateActiveButton(theme) {
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// Remove .active class from all buttons
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document.querySelectorAll('#theme-switcher button').forEach(button => {
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button.classList.remove('active');
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});
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// Add .active class to the button corresponding to the current theme
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const activeButton = document.querySelector(`#theme-${theme}`);
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if (activeButton) {
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activeButton.classList.add('active');
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}
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}
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document.getElementById("theme-light").addEventListener("click", function () {
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switchTheme("light");
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});
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document.getElementById("theme-dark").addEventListener("click", function () {
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switchTheme("dark");
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});
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document.getElementById("theme-system").addEventListener("click", function () {
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switchTheme("system");
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});
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// Update icon class on page load based on current theme
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const currentTheme = localStorage.getItem("theme") || window.defaultTheme || "system";
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updateIconClass(currentTheme);
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updateActiveButton(currentTheme);
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// Make the switchTheme function accessible globally
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window.switchTheme = switchTheme;
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