stable-diffusion.cpp-rest/webui/components/theme-toggle.tsx

'use client';

import * as React from 'react';
import { Moon, Sun } from 'lucide-react';
import { useTheme } from 'next-themes';
import { cn } from '@/lib/utils';

export function ThemeToggle() {
  const { theme, setTheme } = useTheme();
  const [mounted, setMounted] = React.useState(false);

  React.useEffect(() => {
    setMounted(true);
  }, []);

  if (!mounted) {
    return null;
  }

  return (
    <button
      onClick={() => setTheme(theme === 'dark' ? 'light' : 'dark')}
      className={cn(
        'relative inline-flex h-10 w-10 items-center justify-center rounded-lg',
        'border border-input bg-background hover:bg-accent hover:text-accent-foreground',
        'transition-colors focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring'
      )}
      aria-label="Toggle theme"
    >
      <Sun className="h-5 w-5 rotate-0 scale-100 transition-all dark:-rotate-90 dark:scale-0" />
      <Moon className="absolute h-5 w-5 rotate-90 scale-0 transition-all dark:rotate-0 dark:scale-100" />
    </button>
  );
}