293 lines
No EOL
9.4 KiB
Dart
293 lines
No EOL
9.4 KiB
Dart
// Version: 1.9 - 商品マスタ画面（汎用フォーム実装）
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import 'package:flutter/material.dart';
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import '../../models/product.dart';
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import '../../services/database_helper.dart';
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import '../../widgets/master_edit_fields.dart';
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/// 商品マスタ管理画面（CRUD 機能付き・汎用フォーム実装）
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class ProductMasterScreen extends StatefulWidget {
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const ProductMasterScreen({super.key});
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@override
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State<ProductMasterScreen> createState() => _ProductMasterScreenState();
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}
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class _ProductMasterScreenState extends State<ProductMasterScreen> {
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List<Product> _products = [];
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bool _loading = true;
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@override
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void initState() {
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super.initState();
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_loadProducts();
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}
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Future<void> _loadProducts() async {
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setState(() => _loading = true);
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try {
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final products = await DatabaseHelper.instance.getProducts();
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if (mounted) setState(() => _products = products ?? const <Product>[]);
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} catch (e) {
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if (mounted) ScaffoldMessenger.of(context).showSnackBar(
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SnackBar(content: Text('読み込みエラー：$e'), backgroundColor: Colors.red),
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);
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} finally {
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setState(() => _loading = false);
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}
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}
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Future<Product?> _showProductDialog({Product? initialProduct}) async {
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final titleText = initialProduct == null ? '新規商品登録' : '商品編集';
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return await showDialog<Product>(
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context: context,
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builder: (context) => AlertDialog(
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title: Text(titleText),
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content: SingleChildScrollView(child: ProductForm(initialProduct: initialProduct)),
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actions: [
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TextButton(onPressed: () => Navigator.pop(context), child: const Text('キャンセル')),
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ElevatedButton(
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onPressed: () => Navigator.pop(context, initialProduct ?? null),
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style: ElevatedButton.styleFrom(backgroundColor: Colors.teal),
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child: initialProduct == null ? const Text('登録') : const Text('更新'),
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),
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],
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),
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);
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}
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void _onAddPressed() async {
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final result = await _showProductDialog();
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if (result != null && mounted) {
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try {
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await DatabaseHelper.instance.insertProduct(result);
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ScaffoldMessenger.of(context).showSnackBar(
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const SnackBar(content: Text('商品登録完了'), backgroundColor: Colors.green),
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);
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_loadProducts();
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} catch (e) {
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if (mounted) ScaffoldMessenger.of(context).showSnackBar(
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SnackBar(content: Text('保存エラー：$e'), backgroundColor: Colors.red),
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);
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}
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}
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}
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Future<void> _onEditPressed(int id) async {
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final product = await DatabaseHelper.instance.getProduct(id);
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if (product == null || !mounted) return;
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final result = await _showProductDialog(initialProduct: product);
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if (result != null && mounted) {
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try {
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await DatabaseHelper.instance.updateProduct(result);
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ScaffoldMessenger.of(context).showSnackBar(
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const SnackBar(content: Text('商品更新完了'), backgroundColor: Colors.green),
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);
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_loadProducts();
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} catch (e) {
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if (mounted) ScaffoldMessenger.of(context).showSnackBar(
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SnackBar(content: Text('保存エラー：$e'), backgroundColor: Colors.red),
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);
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}
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}
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}
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Future<void> _onDeletePressed(int id) async {
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final product = await DatabaseHelper.instance.getProduct(id);
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if (!mounted) return;
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final confirmed = await showDialog<bool>(
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context: context,
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builder: (context) => AlertDialog(
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title: const Text('商品削除'),
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content: Text('"${product?.name ?? 'この商品'}"を削除しますか？'),
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actions: [
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TextButton(onPressed: () => Navigator.pop(context), child: const Text('キャンセル')),
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ElevatedButton(
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onPressed: () {
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if (mounted) Navigator.pop(context, true);
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},
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style: ElevatedButton.styleFrom(backgroundColor: Colors.red),
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child: const Text('削除'),
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),
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],
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),
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);
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if (confirmed == true && mounted) {
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try {
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await DatabaseHelper.instance.deleteProduct(id);
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ScaffoldMessenger.of(context).showSnackBar(
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const SnackBar(content: Text('商品削除完了'), backgroundColor: Colors.green),
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);
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_loadProducts();
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} catch (e) {
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if (mounted) ScaffoldMessenger.of(context).showSnackBar(
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SnackBar(content: Text('削除エラー：$e'), backgroundColor: Colors.red),
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);
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}
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}
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}
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@override
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Widget build(BuildContext context) {
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return Scaffold(
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appBar: AppBar(
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title: const Text('/M1. 商品マスタ'),
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actions: [
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IconButton(icon: const Icon(Icons.refresh), onPressed: _loadProducts,),
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IconButton(icon: const Icon(Icons.add), onPressed: _onAddPressed,),
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],
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),
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body: _loading ? const Center(child: CircularProgressIndicator()) :
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_products.isEmpty ? Center(child: Text('商品データがありません')) :
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ListView.builder(
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padding: const EdgeInsets.all(8),
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itemCount: _products.length,
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itemBuilder: (context, index) {
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final product = _products[index];
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return Card(
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margin: const EdgeInsets.only(bottom: 8),
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child: ListTile(
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leading: CircleAvatar(backgroundColor: Colors.blue.shade50, child: Icon(Icons.shopping_basket)),
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title: Text(product.name.isEmpty ? '商品（未入力）' : product.name),
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subtitle: Column(crossAxisAlignment: CrossAxisAlignment.start, children: [
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Text('コード：${product.productCode}'),
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Text('単価：¥${(product.unitPrice ?? 0).toStringAsFixed(2)}'),
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]),
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trailing: Row(
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mainAxisSize: MainAxisSize.min,
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children: [
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IconButton(icon: const Icon(Icons.edit), onPressed: () => _onEditPressed(product.id ?? 0)),
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IconButton(icon: const Icon(Icons.delete), onPressed: () => _onDeletePressed(product.id ?? 0)),
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],
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),
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),
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);
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},
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),
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);
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}
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}
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/// 商品フォーム部品（汎用フォーム実装）
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class ProductForm extends StatefulWidget {
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final Product? initialProduct;
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const ProductForm({super.key, this.initialProduct});
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@override
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State<ProductForm> createState() => _ProductFormState();
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}
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class _ProductFormState extends State<ProductForm> {
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late TextEditingController _productCodeController;
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late TextEditingController _nameController;
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late TextEditingController _unitPriceController;
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@override
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void initState() {
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super.initState();
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final initialProduct = widget.initialProduct;
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_productCodeController = TextEditingController(text: initialProduct?.productCode ?? '');
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_nameController = TextEditingController(text: initialProduct?.name ?? '');
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_unitPriceController = TextEditingController(text: (initialProduct?.unitPrice ?? 0.0).toString());
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if (_productCodeController.text.isEmpty) {
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_productCodeController = TextEditingController();
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}
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if (_nameController.text.isEmpty) {
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_nameController = TextEditingController();
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}
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if (_unitPriceController.text.isEmpty) {
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_unitPriceController = TextEditingController(text: '0');
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}
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}
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@override
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void dispose() {
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_productCodeController.dispose();
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_nameController.dispose();
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_unitPriceController.dispose();
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super.dispose();
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}
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String? _validateProductCode(String? value) {
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if (value == null || value.isEmpty) {
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return '商品コードは必須です';
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}
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final regex = RegExp(r'^[0-9]+$');
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if (!regex.hasMatch(value)) {
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return '商品コードは数字のみを入力してください（例：9000）';
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}
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return null;
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}
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String? _validateName(String? value) {
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if (value == null || value.isEmpty) {
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return '品名は必須です';
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}
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return null;
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}
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String? _validateUnitPrice(String? value) {
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final price = double.tryParse(value ?? '');
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if (price == null) {
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return '単価は数値を入力してください';
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}
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if (price < 0) {
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return '単価は 0 以上の値です';
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}
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return null;
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}
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@override
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Widget build(BuildContext context) {
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return Column(
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mainAxisSize: MainAxisSize.min,
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crossAxisAlignment: CrossAxisAlignment.stretch,
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children: [
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// セクションヘッダー：基本情報
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Padding(
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padding: const EdgeInsets.only(bottom: 8),
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child: Text(
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'基本情報',
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style: Theme.of(context).textTheme.titleMedium?.copyWith(fontWeight: FontWeight.bold),
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),
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),
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MasterTextField(
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label: '商品コード',
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hint: '例：9000',
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controller: _productCodeController,
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validator: _validateProductCode,
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),
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const SizedBox(height: 16),
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MasterTextField(
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label: '品名',
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hint: '商品の名称',
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controller: _nameController,
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),
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const SizedBox(height: 16),
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MasterNumberField(
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label: '単価（円）',
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hint: '0',
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controller: _unitPriceController,
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validator: _validateUnitPrice,
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),
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],
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);
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}
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} |