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Hover to Preview theme #63

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Hover to Preview theme #63

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7784875
extract update ui part to its own function
danielvaswani Jun 27, 2022
0eb7b81
function to preview and unpreview theme on hover
danielvaswani Jun 27, 2022
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25 changes: 25 additions & 0 deletions src/lib/ThemeSelector.svelte
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Original file line number Diff line number Diff line change
Expand Up @@ -10,6 +10,10 @@
selected = !!ls.theme;
theme ? (ls.theme = theme.toLowerCase()) : ls.removeItem("theme");

updateUIWithPreference(ls);
};

const updateUIWithPreference = (ls: Storage) => {
if (
ls.theme === "dark" ||
(!("theme" in ls) && window.matchMedia("(prefers-color-scheme: dark)").matches)
Expand All @@ -18,6 +22,21 @@
else document.documentElement.classList.remove("dark");
};

const previewTheme = (theme?: string) => {
document.documentElement.classList.remove("dark");
if (!theme) {
if (window.matchMedia("(prefers-color-scheme: dark)").matches)
document.documentElement.classList.add("dark");
} else document.documentElement.classList.add(theme?.toLowerCase());
};

const unpreviewTheme = () => {
if (!ls) return;
document.documentElement.classList.remove("dark");

updateUIWithPreference(ls);
};

onMount(() => {
typeof localStorage !== `undefined` && (ls = localStorage);
if (!ls) return;
Expand Down Expand Up @@ -50,6 +69,8 @@
>
<div
on:click={() => setSelectedTheme()}
on:mouseenter={() => previewTheme()}
on:mouseleave={() => unpreviewTheme()}
class="flex cursor-pointer items-center hover:bg-slate-100 dark:hover:bg-slate-700 dark:text-white"
>
<svg
Expand All @@ -69,6 +90,8 @@
</div>
<div
on:click={() => setSelectedTheme("Light")}
on:mouseenter={() => previewTheme("Light")}
on:mouseleave={() => unpreviewTheme()}
class="flex cursor-pointer items-center hover:bg-slate-100 dark:hover:bg-slate-700 dark:text-white"
>
<svg
Expand All @@ -88,6 +111,8 @@
</div>
<div
on:click={() => setSelectedTheme("Dark")}
on:mouseenter={() => previewTheme("Dark")}
on:mouseleave={() => unpreviewTheme()}
class="flex cursor-pointer items-center hover:bg-slate-100 dark:hover:bg-slate-700 dark:text-white"
>
<svg
Expand Down