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playground: support dark theme (#1552)
at least you don't get a flashbang anymore 
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,73 @@ | ||
| import { createContext, useContext, useEffect, useState } from 'react' | ||
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| type Theme = 'dark' | 'light' | 'system' | ||
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| type ThemeProviderProps = { | ||
| children: React.ReactNode | ||
| defaultTheme?: Theme | ||
| storageKey?: string | ||
| } | ||
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| type ThemeProviderState = { | ||
| theme: Theme | ||
| setTheme: (theme: Theme) => void | ||
| } | ||
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| const initialState: ThemeProviderState = { | ||
| theme: 'system', | ||
| setTheme: () => null, | ||
| } | ||
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| const ThemeProviderContext = createContext<ThemeProviderState>(initialState) | ||
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| export function ThemeProvider({ | ||
| children, | ||
| defaultTheme = 'system', | ||
| storageKey = 'ui-theme', | ||
| ...props | ||
| }: ThemeProviderProps) { | ||
| const [theme, setTheme] = useState<Theme>( | ||
| () => (localStorage.getItem(storageKey) as Theme) || defaultTheme, | ||
| ) | ||
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| useEffect(() => { | ||
| const root = window.document.documentElement | ||
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| root.classList.remove('light', 'dark') | ||
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| if (theme === 'system') { | ||
| const systemTheme = window.matchMedia('(prefers-color-scheme: dark)').matches | ||
| ? 'dark' | ||
| : 'light' | ||
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| root.classList.add(systemTheme) | ||
| return | ||
| } | ||
|
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| root.classList.add(theme) | ||
| }, [theme]) | ||
|
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| const value = { | ||
| theme, | ||
| setTheme: (theme: Theme) => { | ||
| localStorage.setItem(storageKey, theme) | ||
| setTheme(theme) | ||
| }, | ||
| } | ||
|
|
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| return ( | ||
| <ThemeProviderContext.Provider {...props} value={value}> | ||
| {children} | ||
| </ThemeProviderContext.Provider> | ||
| ) | ||
| } | ||
|
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| export const useTheme = () => { | ||
| const context = useContext(ThemeProviderContext) | ||
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| if (context === undefined) { | ||
| throw new Error('useTheme must be used within a ThemeProvider') | ||
| } | ||
|
|
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| return context | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,14 +1,17 @@ | ||
| import { Outlet } from 'react-router-dom' | ||
| import { Suspense } from 'react' | ||
| import { LayoutHeader } from '@/components/layout/header' | ||
| import { ThemeProvider } from '@/components/theme-provider' | ||
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| export const RootLayout = () => { | ||
| return ( | ||
| <div className="flex h-[100dvh] flex-col"> | ||
| <LayoutHeader /> | ||
| <Suspense> | ||
| <Outlet /> | ||
| </Suspense> | ||
| </div> | ||
| <ThemeProvider defaultTheme="system"> | ||
| <div className="flex h-[100dvh] flex-col"> | ||
| <LayoutHeader /> | ||
| <Suspense> | ||
| <Outlet /> | ||
| </Suspense> | ||
| </div> | ||
| </ThemeProvider> | ||
| ) | ||
| } |