Implementation dengan Claude Code

commandパレットでpengguna体験を劇的にpeningkatan

VSCodeやSlack 見かけるcommandパレット 、キーボードだけ 素早くoperasi きるパワーpengguna向け UIelemen.Claude Code 使えば、pencarian・filtering・キーボードnavigasi 備えたcommandパレット efisien implementasi bisa dilakukan.

dasar的なcommandパレットkomponen

> Cmd+K（Mac）/ Ctrl+K（Windows） dengan 開くcommandパレット implementasikan.
> pencarian、キーボードoperasi、kategori別tampilan support.

// components/CommandPalette.tsx
import { useState, useEffect, useRef, useCallback } from 'react';

interface Command {
  id: string;
  label: string;
  category: string;
  icon?: string;
  shortcut?: string;
  action: () => void;
}

interface CommandPaletteProps {
  commands: Command[];
}

export function CommandPalette({ commands }: CommandPaletteProps) {
  const [isOpen, setIsOpen] = useState(false);
  const [query, setQuery] = useState('');
  const [selectedIndex, setSelectedIndex] = useState(0);
  const inputRef = useRef<HTMLInputElement>(null);

  const filtered = commands.filter(cmd =>
    cmd.label.toLowerCase().includes(query.toLowerCase()) ||
    cmd.category.toLowerCase().includes(query.toLowerCase())
  );

  // グローバルショートカット
  useEffect(() => {
    const handleKeyDown = (e: KeyboardEvent) => {
      if ((e.metaKey || e.ctrlKey) && e.key === 'k') {
        e.preventDefault();
        setIsOpen(prev => !prev);
      }
      if (e.key === 'Escape') setIsOpen(false);
    };
    window.addEventListener('keydown', handleKeyDown);
    return () => window.removeEventListener('keydown', handleKeyDown);
  }, []);

  // フォーカス制御
  useEffect(() => {
    if (isOpen) {
      inputRef.current?.focus();
      setQuery('');
      setSelectedIndex(0);
    }
  }, [isOpen]);

  const handleKeyNav = useCallback((e: React.KeyboardEvent) => {
    switch (e.key) {
      case 'ArrowDown':
        e.preventDefault();
        setSelectedIndex(i => Math.min(i + 1, filtered.length - 1));
        break;
      case 'ArrowUp':
        e.preventDefault();
        setSelectedIndex(i => Math.max(i - 1, 0));
        break;
      case 'Enter':
        e.preventDefault();
        if (filtered[selectedIndex]) {
          filtered[selectedIndex].action();
          setIsOpen(false);
        }
        break;
    }
  }, [filtered, selectedIndex]);

  if (!isOpen) return null;

  return (
    <div className="fixed inset-0 z-50 flex items-start justify-center pt-[20vh]">
      <div className="fixed inset-0 bg-black/50" onClick={() => setIsOpen(false)} />
      <div className="relative w-full max-w-lg rounded-xl bg-white shadow-2xl dark:bg-gray-800">
        <input
          ref={inputRef}
          type="text"
          value={query}
          onChange={e => { setQuery(e.target.value); setSelectedIndex(0); }}
          onKeyDown={handleKeyNav}
          placeholder="command pencarian..."
          className="w-full border-b px-4 py-3 text-lg outline-none dark:bg-gray-800"
        />
        <ul className="max-h-80 overflow-y-auto p-2" role="listbox">
          {filtered.map((cmd, index) => (
            <li
              key={cmd.id}
              role="option"
              aria-selected={index === selectedIndex}
              onClick={() => { cmd.action(); setIsOpen(false); }}
              className={`flex cursor-pointer items-center justify-between rounded-lg px-3 py-2
                ${index === selectedIndex ? 'bg-blue-50 dark:bg-blue-900/30' : 'hover:bg-gray-50'}`}
            >
              <div className="flex items-center gap-3">
                {cmd.icon && <span className="text-lg">{cmd.icon}</span>}
                <div>
                  <div className="font-medium">{cmd.label}</div>
                  <div className="text-xs text-gray-500">{cmd.category}</div>
                </div>
              </div>
              {cmd.shortcut && (
                <kbd className="rounded bg-gray-100 px-2 py-1 text-xs dark:bg-gray-700">
                  {cmd.shortcut}
                </kbd>
              )}
            </li>
          ))}
          {filtered.length === 0 && (
            <li className="px-3 py-8 text-center text-gray-500">
              該当するコマンドがありません
            </li>
          )}
        </ul>
      </div>
    </div>
  );
}

definisiとregistrasi command

// hooks/useCommands.ts
import { useRouter } from 'next/navigation';

export function useCommands(): Command[] {
  const router = useRouter();

  return [
    {
      id: 'home', label: 'ホーム 移動', category: 'navigasi',
      icon: '🏠', shortcut: 'G H',
      action: () => router.push('/'),
    },
    {
      id: 'blog', label: 'ブログdaftar', category: 'navigasi',
      icon: '📝', shortcut: 'G B',
      action: () => router.push('/blog'),
    },
    {
      id: 'theme', label: 'temaperalihan', category: 'pengaturan',
      icon: '🌙', shortcut: 'T T',
      action: () => document.documentElement.classList.toggle('dark'),
    },
    {
      id: 'search', label: 'artikel pencarian', category: 'pencarian',
      icon: '🔍', shortcut: '/',
      action: () => router.push('/search'),
    },
  ];
}

dukungan アクセシビリティ

// WAI-ARIA 適用
<div
  role="dialog"
  aria-modal="true"
  aria-label="commandパレット"
>
  <input
    role="combobox"
    aria-expanded="true"
    aria-controls="command-list"
    aria-activedescendant={`command-${filtered[selectedIndex]?.id}`}
  />
  <ul id="command-list" role="listbox">
    {/* ... */}
  </ul>
</div>

Summary

commandパレット キーボードショートカット dan 組み合わせるこ dan 、パワーpengguna 生産性 大幅 向上させ.Claude Code 使えば、pencarian・filtering・キーボードnavigasi 備えた本格的なcommandパレット waktu singkat implementasi bisa dilakukan.アクセシビリティ juga 配慮 、すべて pengguna 使いやすいUI 目指し.implementasi 参考 sebagai cmdklibrary juga 検討 みて.