/*!
* Color mode toggler for Bootstrap's docs (https://getbootstrap.com/)
* Copyright 2011-2025 The Bootstrap Authors
* Licensed under the Creative Commons Attribution 3.0 Unported License.
*/
(() => {
'use strict'
const getStoredTheme = () => localStorage.getItem('theme')
const setStoredTheme = theme => localStorage.setItem('theme', theme)
const getPreferredTheme = () => {
const storedTheme = getStoredTheme()
if (storedTheme) {
return storedTheme
}
return window.matchMedia('(prefers-color-scheme: dark)').matches ? 'dark' : 'light'
}
const setTheme = theme => {
if (theme === 'auto') {
document.documentElement.setAttribute('data-bs-theme', (window.matchMedia('(prefers-color-scheme: dark)').matches ? 'dark' : 'light'))
} else {
document.documentElement.setAttribute('data-bs-theme', theme)
}
}
setTheme(getPreferredTheme())
const showActiveTheme = (theme, focus = false) => {
const themeSwitcher = document.querySelector('#bd-theme')
if (!themeSwitcher) {
return
}
const themeSwitcherText = document.querySelector('#bd-theme-text')
const activeThemeIcon = document.querySelector('.theme-icon-active use')
const btnToActive = document.querySelector(`[data-bs-theme-value="${theme}"]`)
const svgOfActiveBtn = btnToActive.querySelector('svg use').getAttribute('href')
document.querySelectorAll('[data-bs-theme-value]').forEach(element => {
element.classList.remove('active')
element.setAttribute('aria-pressed', 'false')
})
btnToActive.classList.add('active')
btnToActive.setAttribute('aria-pressed', 'true')
activeThemeIcon.setAttribute('href', svgOfActiveBtn)
const themeSwitcherLabel = `${themeSwitcherText.textContent} (${btnToActive.dataset.bsThemeValue})`
themeSwitcher.setAttribute('aria-label', themeSwitcherLabel)
if (focus) {
themeSwitcher.focus()
}
}
window.matchMedia('(prefers-color-scheme: dark)').addEventListener('change', () => {
const storedTheme = getStoredTheme()
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')
setStoredTheme(theme)
setTheme(theme)
showActiveTheme(theme, true)
})
})
})
})()
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