From 0a76707062b366af4c6b5e85afb5fcdef6a8196a Mon Sep 17 00:00:00 2001
From: kabirgh <15871468+kabirgh@users.noreply.github.com>
Date: Tue, 23 Jan 2024 22:52:41 +0000
Subject: [PATCH] feat: Emit custom event when theme changes (#723)
---
quartz/components/scripts/darkmode.inline.ts | 28 +++++++++++++++++++++-------
1 files changed, 21 insertions(+), 7 deletions(-)
diff --git a/quartz/components/scripts/darkmode.inline.ts b/quartz/components/scripts/darkmode.inline.ts
index e16f4f8..86735e3 100644
--- a/quartz/components/scripts/darkmode.inline.ts
+++ b/quartz/components/scripts/darkmode.inline.ts
@@ -2,15 +2,19 @@
const currentTheme = localStorage.getItem("theme") ?? userPref
document.documentElement.setAttribute("saved-theme", currentTheme)
+const emitThemeChangeEvent = (theme: "light" | "dark") => {
+ const event: CustomEventMap["themechange"] = new CustomEvent("themechange", {
+ detail: { theme },
+ })
+ document.dispatchEvent(event)
+}
+
document.addEventListener("nav", () => {
const switchTheme = (e: any) => {
- if (e.target.checked) {
- document.documentElement.setAttribute("saved-theme", "dark")
- localStorage.setItem("theme", "dark")
- } else {
- document.documentElement.setAttribute("saved-theme", "light")
- localStorage.setItem("theme", "light")
- }
+ const newTheme = e.target.checked ? "dark" : "light"
+ document.documentElement.setAttribute("saved-theme", newTheme)
+ localStorage.setItem("theme", newTheme)
+ emitThemeChangeEvent(newTheme)
}
// Darkmode toggle
@@ -20,4 +24,14 @@
if (currentTheme === "dark") {
toggleSwitch.checked = true
}
+
+ // Listen for changes in prefers-color-scheme
+ const colorSchemeMediaQuery = window.matchMedia("(prefers-color-scheme: dark)")
+ colorSchemeMediaQuery.addEventListener("change", (e) => {
+ const newTheme = e.matches ? "dark" : "light"
+ document.documentElement.setAttribute("saved-theme", newTheme)
+ localStorage.setItem("theme", newTheme)
+ toggleSwitch.checked = e.matches
+ emitThemeChangeEvent(newTheme)
+ })
})
--
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