generated from dellevin/template
基础功能
This commit is contained in:
DelLevin-Home
287
lib/pages/book_form_page.dart
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287
lib/pages/book_form_page.dart
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import 'package:flutter/material.dart';
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import 'package:provider/provider.dart';
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import '../providers/app_provider.dart';
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import '../models/data_models.dart';
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/// 添加/编辑书籍记录页面
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class BookFormPage extends StatefulWidget {
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final Book? book; // 如果为 null，则是添加模式；否则是编辑模式
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const BookFormPage({super.key, this.book});
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@override
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State<BookFormPage> createState() => _BookFormPageState();
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}
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class _BookFormPageState extends State<BookFormPage> {
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final _formKey = GlobalKey<FormState>();
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late TextEditingController _titleController;
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late TextEditingController _authorController;
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late TextEditingController _ratingController;
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late TextEditingController _noteController;
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late String _status;
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DateTime? _readDate;
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@override
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void initState() {
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super.initState();
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_titleController = TextEditingController(text: widget.book?.title ?? '');
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_authorController = TextEditingController(text: widget.book?.author ?? '');
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_ratingController = TextEditingController(text: widget.book?.rating?.toString() ?? '');
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_noteController = TextEditingController(text: widget.book?.note ?? '');
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_status = widget.book?.status ?? 'want_to_read';
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_readDate = widget.book?.readDate;
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}
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@override
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void dispose() {
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_titleController.dispose();
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_authorController.dispose();
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_ratingController.dispose();
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_noteController.dispose();
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super.dispose();
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}
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@override
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Widget build(BuildContext context) {
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final isEdit = widget.book != null;
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return Scaffold(
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appBar: AppBar(
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title: Text(isEdit ? '编辑书籍' : '添加书籍'),
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actions: [
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IconButton(
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icon: const Icon(Icons.save),
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onPressed: _saveBook,
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),
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],
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),
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body: SingleChildScrollView(
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padding: const EdgeInsets.all(16),
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child: Form(
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key: _formKey,
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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// 标题
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TextFormField(
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controller: _titleController,
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decoration: const InputDecoration(
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labelText: '书名 *',
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hintText: '请输入书名',
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prefixIcon: Icon(Icons.menu_book),
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border: OutlineInputBorder(),
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),
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validator: (value) {
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if (value == null || value.trim().isEmpty) {
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return '请输入书名';
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}
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return null;
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},
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),
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const SizedBox(height: 16),
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// 作者
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TextFormField(
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controller: _authorController,
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decoration: const InputDecoration(
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labelText: '作者',
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hintText: '请输入作者',
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prefixIcon: Icon(Icons.person),
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border: OutlineInputBorder(),
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),
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),
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const SizedBox(height: 16),
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// 年份和评分
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Row(
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children: [
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Expanded(
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child: TextFormField(
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controller: _ratingController,
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decoration: const InputDecoration(
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labelText: '评分',
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hintText: '0-10',
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prefixIcon: Icon(Icons.star),
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border: OutlineInputBorder(),
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),
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keyboardType: const TextInputType.numberWithOptions(decimal: true),
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validator: (value) {
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if (value != null && value.isNotEmpty) {
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final rating = double.tryParse(value);
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if (rating == null || rating < 0 || rating > 10) {
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return '评分必须在 0-10 之间';
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}
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}
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return null;
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},
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),
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),
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],
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),
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const SizedBox(height: 16),
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// 状态选择
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DropdownButtonFormField<String>(
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value: _status,
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decoration: const InputDecoration(
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labelText: '状态',
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prefixIcon: Icon(Icons.check_circle_outline),
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border: OutlineInputBorder(),
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),
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items: const [
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DropdownMenuItem(value: 'read', child: Text('读完')),
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DropdownMenuItem(value: 'reading', child: Text('在读')),
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DropdownMenuItem(value: 'want_to_read', child: Text('准备读')),
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],
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onChanged: (value) {
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setState(() {
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_status = value!;
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});
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},
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),
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const SizedBox(height: 16),
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// 阅读日期选择
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InkWell(
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onTap: _selectReadDate,
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child: InputDecorator(
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decoration: const InputDecoration(
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labelText: '阅读日期',
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prefixIcon: Icon(Icons.event),
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border: OutlineInputBorder(),
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),
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child: Row(
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mainAxisAlignment: MainAxisAlignment.spaceBetween,
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children: [
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Text(
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_readDate != null
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? '${_readDate!.year}-${_readDate!.month.toString().padLeft(2, '0')}-${_readDate!.day.toString().padLeft(2, '0')}'
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: '选择日期',
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style: TextStyle(
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color: _readDate != null
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? Theme.of(context).colorScheme.onSurface
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: Theme.of(context).colorScheme.onSurfaceVariant,
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),
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),
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if (_readDate != null)
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IconButton(
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icon: const Icon(Icons.clear, size: 20),
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onPressed: () {
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setState(() {
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_readDate = null;
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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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const SizedBox(height: 16),
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// 笔记
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TextFormField(
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controller: _noteController,
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decoration: const InputDecoration(
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labelText: '笔记',
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hintText: '写下你的读后感...',
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prefixIcon: Icon(Icons.edit_note),
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border: OutlineInputBorder(),
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alignLabelWithHint: true,
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),
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maxLines: 5,
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),
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const SizedBox(height: 32),
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// 保存按钮
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SizedBox(
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width: double.infinity,
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height: 48,
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child: ElevatedButton.icon(
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onPressed: _saveBook,
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icon: const Icon(Icons.save),
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label: Text(isEdit ? '保存修改' : '添加记录'),
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style: ElevatedButton.styleFrom(
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shape: RoundedRectangleBorder(
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borderRadius: BorderRadius.circular(8),
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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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}
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/// 选择阅读日期
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Future<void> _selectReadDate() async {
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final picked = await showDatePicker(
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context: context,
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initialDate: _readDate ?? DateTime.now(),
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firstDate: DateTime(1900),
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lastDate: DateTime.now(),
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);
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if (picked != null) {
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setState(() {
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_readDate = picked;
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});
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}
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}
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/// 保存书籍记录
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Future<void> _saveBook() async {
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if (!_formKey.currentState!.validate()) {
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return;
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}
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final rating = _ratingController.text.isNotEmpty ? double.tryParse(_ratingController.text) : null;
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if (widget.book == null) {
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// 添加新模式
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final newBook = Book(
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id: DateTime.now().millisecondsSinceEpoch.toString(),
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title: _titleController.text.trim(),
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author: _authorController.text.trim(),
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rating: rating,
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status: _status,
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readDate: _readDate,
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note: _noteController.text.trim(),
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);
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await context.read<AppProvider>().addBook(newBook);
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} else {
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// 编辑现有模式
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final updatedBook = Book(
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id: widget.book!.id,
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title: _titleController.text.trim(),
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author: _authorController.text.trim(),
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rating: rating,
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status: _status,
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readDate: _readDate,
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note: _noteController.text.trim(),
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);
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await context.read<AppProvider>().updateBook(updatedBook);
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}
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if (!mounted) return;
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ScaffoldMessenger.of(context).showSnackBar(
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SnackBar(
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content: Text(widget.book == null ? '添加成功' : '更新成功'),
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behavior: SnackBarBehavior.floating,
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),
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);
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Navigator.pop(context);
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}
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}
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