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feat: add theme url param for dev page #438

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feat: add theme url param for dev page #438

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33 changes: 31 additions & 2 deletions pages/app/use-modes.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -5,17 +5,38 @@ import { useSearchParams } from "react-router-dom";

import { applyDensity, applyMode, Density, disableMotion, Mode } from "@cloudscape-design/global-styles";

// `theme` covers mutually exclusive themes that map to a single body class.
export enum Theme {
Default = "default",
OneTheme = "one-theme",
}

const themeClassNames: Record<Theme, string> = {
[Theme.Default]: "",
[Theme.OneTheme]: "awsui-one-theme",
};

function applyThemeClass(activeTheme: Theme) {
for (const [theme, className] of Object.entries(themeClassNames)) {
if (className) {
document.body.classList.toggle(className, theme === activeTheme);
}
}
}

export interface AppUrlParams {
mode: Mode;
density: Density;
direction: "ltr" | "rtl";
theme: Theme;
motionDisabled: boolean;
}

export const defaults: AppUrlParams = {
mode: Mode.Light,
density: Density.Comfortable,
direction: "ltr",
theme: Theme.Default,
motionDisabled: false,
};

Expand All @@ -29,6 +50,10 @@ function castToBoolean(s: string) {
export function parseQuery(urlParams: URLSearchParams) {
const queryParams: Record<string, any> = { ...defaults };
urlParams.forEach((value, key) => (queryParams[key] = castToBoolean(value)));
const themeValues = Object.values(Theme) as string[];
if (!themeValues.includes(queryParams.theme)) {
queryParams.theme = Theme.Default;
}
return queryParams as AppUrlParams;
}

Expand All @@ -46,7 +71,7 @@ export function formatQuery(params: AppUrlParams) {
export default function useModes() {
const [searchParams, setSearchParams] = useSearchParams();
const urlParams = parseQuery(searchParams);
const { density, direction, mode, motionDisabled } = urlParams;
const { density, direction, mode, motionDisabled, theme } = urlParams;

function setParams(newParams: Partial<AppUrlParams>) {
setSearchParams(formatQuery({ ...urlParams, ...newParams }));
Expand All @@ -68,5 +93,9 @@ export default function useModes() {
document.documentElement.setAttribute("dir", direction);
}, [direction]);

return { density, direction, mode, motionDisabled, setParams };
useEffect(() => {
applyThemeClass(theme);
}, [theme]);

return { density, direction, mode, motionDisabled, theme, setParams };
}
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