pflaenz.li/pflaenzli/pflaenzli/static/bootstrap-color-toggler.js
2023-04-02 16:08:09 +02:00

62 lines
2.1 KiB
JavaScript

/*!
* Color mode toggler for Bootstrap's docs (https://getbootstrap.com/)
* Copyright 2011-2022 The Bootstrap Authors
* Licensed under the Creative Commons Attribution 3.0 Unported License.
*/
(() => {
'use strict'
const storedTheme = localStorage.getItem('theme')
const getPreferredTheme = () => {
if (storedTheme) {
return storedTheme
}
return window.matchMedia('(prefers-color-scheme: dark)').matches ? 'dark' : 'light'
}
const setTheme = function(theme) {
if (theme === 'auto' && window.matchMedia('(prefers-color-scheme: dark)').matches) {
document.documentElement.setAttribute('data-bs-theme', 'dark')
} else {
document.documentElement.setAttribute('data-bs-theme', theme)
}
}
setTheme(getPreferredTheme())
const showActiveTheme = theme => {
// const activeThemeIcon = document.querySelector('.theme-icon-active use')
// const svgOfActiveBtn = btnToActive.querySelector('svg use').getAttribute('href')
const btnToActive = document.querySelector(`[data-bs-theme-value="${theme}"]`)
document.querySelectorAll('[data-bs-theme-value]').forEach(element => {
element.classList.remove('active')
})
btnToActive.classList.add('active')
// activeThemeIcon.setAttribute('href', svgOfActiveBtn)
}
window.matchMedia('(prefers-color-scheme: dark)').addEventListener('change', () => {
if (storedTheme !== 'light' || storedTheme !== 'dark') {
setTheme(getPreferredTheme())
}
})
window.addEventListener('DOMContentLoaded', () => {
showActiveTheme(getPreferredTheme())
document.querySelectorAll('[data-bs-theme-value]')
.forEach(toggle => {
toggle.addEventListener('click', () => {
const theme = toggle.getAttribute('data-bs-theme-value')
localStorage.setItem('theme', theme)
setTheme(theme)
showActiveTheme(theme)
})
})
})
})()