Add ThemeIcon component to switch between dark and light mode
Introduces a new component 'ThemeIcon' to enable a smooth switch between light and dark themes based on user preference. This improvement includes a drop-down menu for the users to select their preferred mode and also defines theme-related functionalities inside an object called 'HSThemeAppearance'. Further, it incorporates respective event listeners to effectively handle theme change events.
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Emil Gulamov
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172
src/components/ThemeIcon.astro
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172
src/components/ThemeIcon.astro
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<div
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class="hs-dropdown"
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data-hs-dropdown-placement="bottom-right"
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data-hs-dropdown-offset="30"
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>
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<button
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type="button"
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class="hs-dropdown-toggle hs-dark-mode group flex items-center rounded-lg font-medium text-neutral-600 outline-none ring-zinc-500 hover:text-[#fa5a15] dark:text-neutral-400 dark:ring-zinc-200 dark:hover:text-[#fb713b] dark:focus:outline-none"
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>
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<svg
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class="block h-4 w-4 hs-dark-mode-active:hidden"
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width="24"
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height="24"
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viewBox="0 0 24 24"
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fill="none"
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stroke="currentColor"
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stroke-width="2"
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stroke-linecap="round"
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stroke-linejoin="round"
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><path d="M12 3a6 6 0 0 0 9 9 9 9 0 1 1-9-9Z"></path></svg
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>
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<svg
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class="hidden h-4 w-4 hs-dark-mode-active:block"
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width="24"
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height="24"
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viewBox="0 0 24 24"
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fill="none"
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stroke="currentColor"
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stroke-width="2"
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stroke-linecap="round"
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stroke-linejoin="round"
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><circle cx="12" cy="12" r="4"></circle><path d="M12 8a2 2 0 1 0 4 4"
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></path><path d="M12 2v2"></path><path d="M12 20v2"></path><path
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d="m4.93 4.93 1.41 1.41"></path><path d="m17.66 17.66 1.41 1.41"
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></path><path d="M2 12h2"></path><path d="M20 12h2"></path><path
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d="m6.34 17.66-1.41 1.41"></path><path d="m19.07 4.93-1.41 1.41"
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></path></svg
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>
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</button>
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<div
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id="selectThemeDropdown"
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class="hs-dropdown-menu z-10 mb-2 mt-2 hidden origin-bottom-left space-y-1 rounded-lg bg-neutral-100 p-2 opacity-0 shadow-md transition-[margin,opacity] duration-300 hs-dropdown-open:opacity-100 dark:divide-neutral-700 dark:border dark:border-neutral-700 dark:bg-neutral-700"
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>
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<button
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type="button"
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class="flex w-full items-center gap-x-3.5 rounded-lg px-3 py-2 text-sm text-neutral-800 hover:bg-neutral-200 hs-auto-mode-active:bg-gray-100 dark:text-neutral-400 dark:hover:bg-neutral-800 dark:hover:text-neutral-300"
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data-hs-theme-click-value="auto"
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>
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Auto (system default)
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</button>
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<button
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type="button"
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class="flex w-full items-center gap-x-3.5 rounded-lg px-3 py-2 text-sm text-neutral-800 hover:bg-neutral-200 hs-auto-mode-active:bg-gray-100 dark:text-neutral-400 dark:hover:bg-neutral-800 dark:hover:text-neutral-300"
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data-hs-theme-click-value="default"
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>
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Default (light mode)
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</button>
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<button
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type="button"
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class="flex w-full items-center gap-x-3.5 rounded-lg px-3 py-2 text-sm text-neutral-800 hover:bg-neutral-200 hs-auto-mode-active:bg-gray-100 dark:text-neutral-400 dark:hover:bg-neutral-800 dark:hover:text-neutral-300"
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data-hs-theme-click-value="dark"
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>
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Dark
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</button>
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</div>
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</div>
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<script is:inline>
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const HSThemeAppearance = {
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init() {
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const defaultTheme = "default";
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let theme = localStorage.getItem("hs_theme") || defaultTheme;
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if (document.querySelector("html").classList.contains("dark")) return;
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this.setAppearance(theme);
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},
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_resetStylesOnLoad() {
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const $resetStyles = document.createElement("style");
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$resetStyles.innerText = `*{transition: unset !important;}`;
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$resetStyles.setAttribute("data-hs-appearance-onload-styles", "");
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document.head.appendChild($resetStyles);
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return $resetStyles;
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},
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setAppearance(theme, saveInStore = true, dispatchEvent = true) {
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const $resetStylesEl = this._resetStylesOnLoad();
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if (saveInStore) {
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localStorage.setItem("hs_theme", theme);
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}
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if (theme === "auto") {
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theme = window.matchMedia("(prefers-color-scheme: dark)").matches
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? "dark"
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: "default";
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}
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document.querySelector("html").classList.remove("dark");
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document.querySelector("html").classList.remove("default");
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document.querySelector("html").classList.remove("auto");
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document
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.querySelector("html")
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.classList.add(this.getOriginalAppearance());
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setTimeout(() => {
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$resetStylesEl.remove();
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});
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if (dispatchEvent) {
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window.dispatchEvent(
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new CustomEvent("on-hs-appearance-change", { detail: theme }),
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);
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}
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},
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getAppearance() {
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let theme = this.getOriginalAppearance();
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if (theme === "auto") {
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theme = window.matchMedia("(prefers-color-scheme: dark)").matches
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? "dark"
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: "default";
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}
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return theme;
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},
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getOriginalAppearance() {
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const defaultTheme = "default";
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return localStorage.getItem("hs_theme") || defaultTheme;
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},
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};
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HSThemeAppearance.init();
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window
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.matchMedia("(prefers-color-scheme: dark)")
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.addEventListener("change", (e) => {
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if (HSThemeAppearance.getOriginalAppearance() === "auto") {
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HSThemeAppearance.setAppearance("auto", false);
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}
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});
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window.addEventListener("load", () => {
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const $clickableThemes = document.querySelectorAll(
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"[data-hs-theme-click-value]",
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);
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const $switchableThemes = document.querySelectorAll(
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"[data-hs-theme-switch]",
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);
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$clickableThemes.forEach(($item) => {
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$item.addEventListener("click", () =>
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HSThemeAppearance.setAppearance(
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$item.getAttribute("data-hs-theme-click-value"),
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true,
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$item,
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),
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);
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});
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$switchableThemes.forEach(($item) => {
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$item.addEventListener("change", (e) => {
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HSThemeAppearance.setAppearance(e.target.checked ? "dark" : "default");
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});
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$item.checked = HSThemeAppearance.getAppearance() === "dark";
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});
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window.addEventListener("on-hs-appearance-change", (e) => {
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$switchableThemes.forEach(($item) => {
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$item.checked = e.detail === "dark";
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});
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});
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});
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</script>
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