73 lines
2.4 KiB
HTML
73 lines
2.4 KiB
HTML
{{ $style := "light-without-switcher" }}
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{{ if and (isset site.Params "style") (ne site.Params.style "") }}
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{{ $style = site.Params.style | lower }}
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{{ end }}
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{{ if not (in (slice "light-without-switcher" "dark-without-switcher" "auto-without-switcher") $style) }}
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<button class="theme-switcher">
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{{ i18n "darkTheme" | humanize }}
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</button>
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<script>
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const STORAGE_KEY = 'user-color-scheme'
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const defaultTheme = {{ $style }}
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let currentTheme
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let switchButton
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let autoDefinedScheme = window.matchMedia('(prefers-color-scheme: dark)')
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const autoChangeScheme = e => {
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currentTheme = e.matches ? 'dark' : 'light'
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document.documentElement.setAttribute('data-theme', currentTheme)
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changeButtonText()
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}
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document.addEventListener('DOMContentLoaded', function() {
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switchButton = document.querySelector('.theme-switcher')
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currentTheme = detectCurrentScheme()
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if (currentTheme == 'dark') {
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document.documentElement.setAttribute('data-theme', 'dark')
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}
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if (currentTheme == 'auto') {
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autoChangeScheme(autoDefinedScheme);
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autoDefinedScheme.addListener(autoChangeScheme);
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}
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changeButtonText()
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switchButton.addEventListener('click', switchTheme, false)
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})
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function detectCurrentScheme() {
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if (localStorage.getItem(STORAGE_KEY)) {
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return localStorage.getItem(STORAGE_KEY)
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}
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if (defaultTheme) {
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return defaultTheme
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}
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if (!window.matchMedia) {
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return 'light'
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}
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if (window.matchMedia('(prefers-color-scheme: dark)').matches) {
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return 'dark'
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}
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return 'light'
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}
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function changeButtonText()
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{
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switchButton.textContent = currentTheme == 'dark' ? {{ i18n "lightTheme" | humanize }} : {{ i18n "darkTheme" | humanize }}
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}
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function switchTheme(e) {
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if (currentTheme == 'dark') {
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localStorage.setItem(STORAGE_KEY, 'light')
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document.documentElement.setAttribute('data-theme', 'light')
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currentTheme = 'light'
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} else {
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localStorage.setItem(STORAGE_KEY, 'dark')
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document.documentElement.setAttribute('data-theme', 'dark')
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currentTheme = 'dark'
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}
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changeButtonText()
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}
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</script>
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{{ end }} |