cullmann.io/themes/blowfish/assets/js/appearance.js

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JavaScript
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const sitePreference = document.documentElement.getAttribute("data-default-appearance");
const userPreference = localStorage.getItem("appearance");
if ((sitePreference === "dark" && userPreference === null) || userPreference === "dark") {
document.documentElement.classList.add("dark");
}
if (document.documentElement.getAttribute("data-auto-appearance") === "true") {
if (
window.matchMedia &&
window.matchMedia("(prefers-color-scheme: dark)").matches &&
userPreference !== "light"
) {
document.documentElement.classList.add("dark");
}
window.matchMedia("(prefers-color-scheme: dark)").addEventListener("change", (event) => {
if (event.matches) {
document.documentElement.classList.add("dark");
} else {
document.documentElement.classList.remove("dark");
}
});
}
window.addEventListener("DOMContentLoaded", (event) => {
const switcher = document.getElementById("appearance-switcher");
const switcherMobile = document.getElementById("appearance-switcher-mobile");
updateMeta();
this.updateLogo?.(getTargetAppearance());
if (switcher) {
switcher.addEventListener("click", () => {
document.documentElement.classList.toggle("dark");
var targetAppearance = getTargetAppearance();
localStorage.setItem(
"appearance",
targetAppearance
);
updateMeta();
this.updateLogo?.(targetAppearance);
});
switcher.addEventListener("contextmenu", (event) => {
event.preventDefault();
localStorage.removeItem("appearance");
});
}
if (switcherMobile) {
switcherMobile.addEventListener("click", () => {
document.documentElement.classList.toggle("dark");
var targetAppearance = getTargetAppearance();
localStorage.setItem(
"appearance",
targetAppearance
);
updateMeta();
this.updateLogo?.(targetAppearance);
});
switcherMobile.addEventListener("contextmenu", (event) => {
event.preventDefault();
localStorage.removeItem("appearance");
});
}
});
var updateMeta = () => {
var elem, style;
elem = document.querySelector('body');
style = getComputedStyle(elem);
document.querySelector('meta[name="theme-color"]').setAttribute('content', style.backgroundColor);
}
{{ if and (.Site.Params.Logo) (.Site.Params.SecondaryLogo) }}
{{ $primaryLogo := resources.Get .Site.Params.Logo }}
{{ $secondaryLogo := resources.Get .Site.Params.SecondaryLogo }}
{{ if and ($primaryLogo) ($secondaryLogo) }}
var updateLogo = (targetAppearance) => {
var elems;
elems = document.querySelectorAll("img.logo")
targetLogoPath =
targetAppearance == "{{ .Site.Params.DefaultAppearance }}" ?
"{{ $primaryLogo.RelPermalink }}" : "{{ $secondaryLogo.RelPermalink }}"
for (const elem of elems) {
elem.setAttribute("src", targetLogoPath)
}
}
{{ end }}
{{- end }}
var getTargetAppearance = () => {
return document.documentElement.classList.contains("dark") ? "dark" : "light"
}
window.addEventListener("DOMContentLoaded", (event) => {
const scroller = document.getElementById("top-scroller");
const footer = document.getElementById("site-footer");
if(scroller && footer && scroller.getBoundingClientRect().top > footer.getBoundingClientRect().top) {
scroller.hidden = true;
}
});