mirror of
https://github.com/vector-im/element-call.git
synced 2024-11-24 00:38:31 +08:00
33 lines
1.1 KiB
TypeScript
33 lines
1.1 KiB
TypeScript
/*
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Copyright 2024 New Vector Ltd.
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SPDX-License-Identifier: AGPL-3.0-only
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Please see LICENSE in the repository root for full details.
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*/
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import { useLayoutEffect, useRef } from "react";
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import { useUrlParams } from "./UrlParams";
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export const useTheme = (): void => {
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const { theme: themeName } = useUrlParams();
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const previousTheme = useRef<string | null>(document.body.classList.item(0));
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useLayoutEffect(() => {
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// If the url does not contain a theme props we default to "dark".
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const theme = themeName?.includes("light") ? "light" : "dark";
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const themeHighContrast = themeName?.includes("high-contrast") ? "-hc" : "";
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const themeString = "cpd-theme-" + theme + themeHighContrast;
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if (themeString !== previousTheme.current) {
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document.body.classList.remove(
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"cpd-theme-light",
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"cpd-theme-dark",
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"cpd-theme-light-hc",
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"cpd-theme-dark-hc",
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);
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document.body.classList.add(themeString);
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previousTheme.current = themeString;
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}
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document.body.classList.remove("no-theme");
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}, [previousTheme, themeName]);
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};
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