wiki/quartz/components/scripts/darkmode.inline.ts
kabirgh 0a76707062
feat: Emit custom event when theme changes (#723)
* Emit custom event when theme changes

* Type themechange custom event

* Update darkmode docs
2024-01-23 14:52:41 -08:00

37 lines
1.4 KiB
TypeScript

const userPref = window.matchMedia("(prefers-color-scheme: light)").matches ? "light" : "dark"
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) => {
const newTheme = e.target.checked ? "dark" : "light"
document.documentElement.setAttribute("saved-theme", newTheme)
localStorage.setItem("theme", newTheme)
emitThemeChangeEvent(newTheme)
}
// Darkmode toggle
const toggleSwitch = document.querySelector("#darkmode-toggle") as HTMLInputElement
toggleSwitch.removeEventListener("change", switchTheme)
toggleSwitch.addEventListener("change", switchTheme)
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)
})
})