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Switch prism and comments theme on changes

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This commit is contained in:
Dave Gallant
2024-01-07 17:17:46 -05:00
parent 29a621a4c3
commit c12f2173db
7 changed files with 40 additions and 166 deletions
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52
themes/hugo-theme-gruvbox/assets/js/dark-mode.js
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@@ -1,12 +1,4 @@
function getTheme() {
if (localStorage && localStorage.getItem("theme")) {
// User preference
return localStorage.getItem("theme");
}
// Undefined
}
function getOSTheme() {
if (window.matchMedia) {
// OS preference
return window.matchMedia("(prefers-color-scheme: light)").matches
@@ -16,44 +8,34 @@ function getOSTheme() {
// Undefined
}
function setTheme(theme) {
// Main theme
document.documentElement.setAttribute("data-theme", theme);
// Prism theme
function setPrismTheme(theme) {
const prismDark = document.getElementById("prism-dark");
const prismLight = document.getElementById("prism-light");
prismDark.toggleAttribute("disabled", theme === "light");
prismLight.toggleAttribute("disabled", theme === "dark");
}
function saveTheme(theme) {
localStorage.setItem("theme", theme);
function setCommentsTheme(theme) {
if (document.querySelector(".utterances-frame")) {
const iframe = document.querySelector(".utterances-frame");
var message = {
type: "set-theme",
theme: theme == "dark" ? "gruvbox-dark" : "github-light",
};
iframe.contentWindow.postMessage(message, "https://utteranc.es");
}
}
// Initial load
const theme = getTheme();
const osTheme = getOSTheme();
if (theme) {
setTheme(theme);
// Store user preference
} else if (osTheme) {
setTheme(osTheme);
setPrismTheme(theme);
}
function toggleTheme(e) {
const theme = e.currentTarget.classList.contains("light--hidden")
? "light"
: "dark";
setTheme(theme);
saveTheme(theme);
}
// This script is inlined in the <head> of the document, so we have to wait
// for the DOM content before can add event listeners to the toggle buttons
document.addEventListener("DOMContentLoaded", function () {
const toggleButtons = document.querySelectorAll(".theme__toggle");
toggleButtons.forEach((btn) => {
btn.addEventListener("click", toggleTheme);
window
.matchMedia("(prefers-color-scheme: dark)")
.addEventListener("change", (event) => {
const theme = event.matches ? "dark" : "light";
setPrismTheme(theme);
setCommentsTheme(theme);
});
});