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Use a MediaQueryListener to toggle on demand. Tested on OSX. (#925)

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Closes #867.
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Kyle Copperfield 2020-03-02 15:33:47 +00:00 committed by GitHub
parent c620a22017
commit a3045a3953
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1 changed files with 21 additions and 0 deletions
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assets/js/themes.js
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@ -28,6 +28,27 @@ window.addEventListener('load', function () {
update_mode(window.localStorage.dark_mode);
});
var darkScheme = window.matchMedia('(prefers-color-scheme: dark)');
var lightScheme = window.matchMedia('(prefers-color-scheme: light)');
darkScheme.addListener(scheme_switch);
lightScheme.addListener(scheme_switch);
function scheme_switch (e) {
// ignore this method if we have a preference set
if (localStorage.getItem('dark_mode')) {
return;
}
if (e.matches) {
if (e.media.includes("dark")) {
set_mode(true);
} else if (e.media.includes("light")) {
set_mode(false);
}
}
}
function set_mode (bool) {
document.getElementById('dark_theme').media = !bool ? 'none' : '';
document.getElementById('light_theme').media = bool ? 'none' : '';