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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 | 1x 1x 1x 9x 7x 7x 4x 4x 3x 9x 9x 9x 4x 9x 5x 5x 9x 9x 9x 2x 2x 9x 9x 9x 9x 9x 1x 14x 14x 4x 4x 9x 9x | import React, { createContext, useContext, useState, useEffect, ReactNode } from 'react';
interface DarkModeContextType {
isDarkMode: boolean;
toggleDarkMode: () => void;
}
const DarkModeContext = createContext<DarkModeContextType | undefined>(undefined);
export function DarkModeProvider({ children }: { children: ReactNode }) {
const [isDarkMode, setIsDarkMode] = useState(() => {
// Check localStorage or system preference
const saved = localStorage.getItem('darkMode');
if (saved !== null) {
return saved === 'true';
}
return window.matchMedia('(prefers-color-scheme: dark)').matches;
});
useEffect(() => {
// Apply dark mode class to document
if (isDarkMode) {
document.documentElement.classList.add('dark');
} else {
document.documentElement.classList.remove('dark');
}
// Save preference
localStorage.setItem('darkMode', isDarkMode.toString());
}, [isDarkMode]);
const toggleDarkMode = () => {
setIsDarkMode((prev) => !prev);
};
return (
<DarkModeContext.Provider value={{ isDarkMode, toggleDarkMode }}>
{children}
</DarkModeContext.Provider>
);
}
export function useDarkMode() {
const context = useContext(DarkModeContext);
if (context === undefined) {
throw new Error('useDarkMode must be used within a DarkModeProvider');
}
return context;
}
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