Mango/public/js/theme.js
2020-07-19 10:58:23 +00:00

80 lines
2.1 KiB
JavaScript

// https://flaviocopes.com/javascript-detect-dark-mode/
const preferDarkMode = () => {
return window.matchMedia && window.matchMedia('(prefers-color-scheme: dark)').matches;
};
const validThemeSetting = (theme) => {
return ['dark', 'light', 'system'].indexOf(theme) >= 0;
};
// dark / light / system
const loadThemeSetting = () => {
let str = localStorage.getItem('theme');
if (!str || !validThemeSetting(str)) str = 'light';
return str;
};
// dark / light
const loadTheme = () => {
let setting = loadThemeSetting();
if (setting === 'system') {
setting = preferDarkMode() ? 'dark' : 'light';
}
return setting;
};
const saveThemeSetting = setting => {
if (!validThemeSetting(setting)) setting = 'light';
localStorage.setItem('theme', setting);
};
// when toggled, Auto will be changed to light or dark
const toggleTheme = () => {
const theme = loadTheme();
const newTheme = theme === 'dark' ? 'light' : 'dark';
saveThemeSetting(newTheme);
setTheme(newTheme);
};
const setTheme = (theme) => {
if (!theme) theme = loadTheme();
if (theme === 'dark') {
$('html').css('background', 'rgb(20, 20, 20)');
$('body').addClass('uk-light');
$('.uk-card').addClass('uk-card-secondary');
$('.uk-card').removeClass('uk-card-default');
$('.ui-widget-content').addClass('dark');
} else {
$('html').css('background', '');
$('body').removeClass('uk-light');
$('.uk-card').removeClass('uk-card-secondary');
$('.uk-card').addClass('uk-card-default');
$('.ui-widget-content').removeClass('dark');
}
};
const styleModal = () => {
const color = loadTheme() === 'dark' ? '#222' : '';
$('.uk-modal-header').css('background', color);
$('.uk-modal-body').css('background', color);
$('.uk-modal-footer').css('background', color);
};
// do it before document is ready to prevent the initial flash of white on
// most pages
setTheme();
$(() => {
// hack for the reader page
setTheme();
// on system dark mode setting change
if (window.matchMedia) {
window.matchMedia('(prefers-color-scheme: dark)')
.addEventListener('change', event => {
if (loadThemeSetting() === 'system')
setTheme(event.matches ? 'dark' : 'light');
});
}
});