forked from semi-23e/nextjs-todo-tutorial
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implement-
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| a6ff1b3ff5 | |||
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204
src/app/page.tsx
204
src/app/page.tsx
@@ -1,103 +1,115 @@
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import Image from "next/image";
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"use client";
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import { useState } from "react";
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// Todo型の定義
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type Todo = {
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id: number;
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text: string;
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completed: boolean;
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};
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export default function Home() {
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return (
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<div className="grid grid-rows-[20px_1fr_20px] items-center justify-items-center min-h-screen p-8 pb-20 gap-16 sm:p-20 font-[family-name:var(--font-geist-sans)]">
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<main className="flex flex-col gap-[32px] row-start-2 items-center sm:items-start">
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<Image
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className="dark:invert"
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src="/next.svg"
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alt="Next.js logo"
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width={180}
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height={38}
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priority
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/>
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<ol className="list-inside list-decimal text-sm/6 text-center sm:text-left font-[family-name:var(--font-geist-mono)]">
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<li className="mb-2 tracking-[-.01em]">
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Get started by editing{" "}
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<code className="bg-black/[.05] dark:bg-white/[.06] px-1 py-0.5 rounded font-[family-name:var(--font-geist-mono)] font-semibold">
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src/app/page.tsx
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</code>
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.
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</li>
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<li className="tracking-[-.01em]">
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Save and see your changes instantly.
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</li>
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</ol>
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// 状態管理の準備（サンプルデータ付き）
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const [todos, setTodos] = useState<Todo[]>([
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{ id: 1, text: "TypeScriptを学ぶ", completed: false },
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{ id: 2, text: "Reactの基礎を理解する", completed: true },
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{ id: 3, text: "TODOアプリを作る", completed: false },
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]);
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<div className="flex gap-4 items-center flex-col sm:flex-row">
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<a
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className="rounded-full border border-solid border-transparent transition-colors flex items-center justify-center bg-foreground text-background gap-2 hover:bg-[#383838] dark:hover:bg-[#ccc] font-medium text-sm sm:text-base h-10 sm:h-12 px-4 sm:px-5 sm:w-auto"
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href="https://vercel.com/new?utm_source=create-next-app&utm_medium=appdir-template-tw&utm_campaign=create-next-app"
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target="_blank"
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rel="noopener noreferrer"
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>
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<Image
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className="dark:invert"
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src="/vercel.svg"
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alt="Vercel logomark"
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width={20}
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height={20}
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// 入力中のテキストを管理
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const [inputText, setInputText] = useState("");
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// TODO追加機能
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const handleAddTodo = (e: React.FormEvent) => {
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e.preventDefault(); // フォームのデフォルト動作を防ぐ
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if (inputText.trim() === "") {
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return; // 空文字の場合は追加しない
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}
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const newTodo: Todo = {
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id: Date.now(), // 簡易的なID生成
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text: inputText,
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completed: false,
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};
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setTodos([...todos, newTodo]); // 新しいTODOを配列に追加
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setInputText(""); // 入力欄をクリア
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};
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// TODO完了状態の切り替え機能
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const handleToggleTodo = (id: number) => {
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setTodos(
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todos.map((todo) =>
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todo.id === id ? { ...todo, completed: !todo.completed } : todo
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)
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);
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};
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// TODO削除機能
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const handleDeleteTodo = (id: number) => {
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setTodos(todos.filter((todo) => todo.id !== id));
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};
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return (
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<main className="min-h-screen p-8 bg-gray-50 dark:bg-gray-900">
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<div className="max-w-4xl mx-auto">
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<h1 className="text-4xl font-bold text-center text-gray-800 dark:text-gray-100 mb-8">
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私のTODOアプリ
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</h1>
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{/* TODO入力フォーム */}
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<div className="mb-8">
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<form onSubmit={handleAddTodo} className="flex gap-2">
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<input
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type="text"
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value={inputText}
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onChange={(e) => setInputText(e.target.value)}
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placeholder="新しいTODOを入力..."
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className="flex-1 px-4 py-2 border border-gray-300 rounded-lg focus:outline-none focus:ring-2 focus:ring-blue-500 dark:bg-gray-800 dark:border-gray-600 dark:text-gray-100"
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/>
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Deploy now
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</a>
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<a
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className="rounded-full border border-solid border-black/[.08] dark:border-white/[.145] transition-colors flex items-center justify-center hover:bg-[#f2f2f2] dark:hover:bg-[#1a1a1a] hover:border-transparent font-medium text-sm sm:text-base h-10 sm:h-12 px-4 sm:px-5 w-full sm:w-auto md:w-[158px]"
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href="https://nextjs.org/docs?utm_source=create-next-app&utm_medium=appdir-template-tw&utm_campaign=create-next-app"
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target="_blank"
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rel="noopener noreferrer"
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>
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Read our docs
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</a>
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<button
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type="submit"
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className="px-6 py-2 bg-blue-500 text-white rounded-lg hover:bg-blue-600 transition-colors"
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>
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追加
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</button>
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</form>
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</div>
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</main>
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<footer className="row-start-3 flex gap-[24px] flex-wrap items-center justify-center">
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<a
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className="flex items-center gap-2 hover:underline hover:underline-offset-4"
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href="https://nextjs.org/learn?utm_source=create-next-app&utm_medium=appdir-template-tw&utm_campaign=create-next-app"
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target="_blank"
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rel="noopener noreferrer"
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>
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<Image
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aria-hidden
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src="/file.svg"
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alt="File icon"
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width={16}
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height={16}
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/>
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Learn
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</a>
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<a
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className="flex items-center gap-2 hover:underline hover:underline-offset-4"
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href="https://vercel.com/templates?framework=next.js&utm_source=create-next-app&utm_medium=appdir-template-tw&utm_campaign=create-next-app"
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target="_blank"
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rel="noopener noreferrer"
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>
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<Image
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aria-hidden
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src="/window.svg"
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alt="Window icon"
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width={16}
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height={16}
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/>
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Examples
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</a>
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<a
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className="flex items-center gap-2 hover:underline hover:underline-offset-4"
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href="https://nextjs.org?utm_source=create-next-app&utm_medium=appdir-template-tw&utm_campaign=create-next-app"
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target="_blank"
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rel="noopener noreferrer"
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>
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<Image
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aria-hidden
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src="/globe.svg"
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alt="Globe icon"
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width={16}
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height={16}
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/>
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Go to nextjs.org →
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</a>
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</footer>
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</div>
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{/* TODOリスト表示エリア */}
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<div className="space-y-2">
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{todos.map((todo) => (
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<div
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key={todo.id}
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className="flex items-center gap-3 p-4 bg-white dark:bg-gray-800 rounded-lg shadow-sm"
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>
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<input
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type="checkbox"
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checked={todo.completed}
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onChange={() => handleToggleTodo(todo.id)}
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className="w-5 h-5 text-blue-500 rounded focus:ring-2 focus:ring-blue-500"
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/>
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<span
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className={`flex-1 ${
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todo.completed
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? "line-through text-gray-500 dark:text-gray-400"
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: "text-gray-800 dark:text-gray-100"
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}`}
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>
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{todo.text}
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</span>
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<button
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onClick={() => handleDeleteTodo(todo.id)}
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className="px-3 py-1 text-red-500 hover:bg-red-50 dark:hover:bg-red-900/20 rounded transition-colors"
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>
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削除
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</button>
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</div>
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))}
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</div>
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</div>
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</main>
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);
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}
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