generated from dellevin/template
640 lines
21 KiB
Dart
640 lines
21 KiB
Dart
import 'dart:io';
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import 'package:flutter/material.dart';
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import 'package:provider/provider.dart';
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import 'package:image_picker/image_picker.dart';
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import 'package:path/path.dart' as p;
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import '../providers/app_provider.dart';
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import '../models/data_models.dart';
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import '../utils/toast_util.dart';
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import '../utils/image_path_helper.dart';
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/// 添加/编辑笔记页面 - 极简书写界面
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class NoteFormPage extends StatefulWidget {
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final Note? note;
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const NoteFormPage({super.key, this.note});
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@override
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State<NoteFormPage> createState() => _NoteFormPageState();
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}
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class _NoteFormPageState extends State<NoteFormPage> {
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late TextEditingController _contentController;
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late DateTime _createdAt;
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List<String> _tags = [];
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List<String> _images = []; // 图片路径列表
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String _contentType = 'markdown'; // markdown / plain_text
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bool _isEditing = false;
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final ImagePicker _picker = ImagePicker();
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String? _tempNoteId; // 新建模式时使用的临时笔记ID
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@override
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void initState() {
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super.initState();
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final note = widget.note;
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_contentController = TextEditingController(text: note?.content ?? '');
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_createdAt = note?.createdAt ?? DateTime.now();
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_tags = note != null ? List.from(note.tags) : [];
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_images = note != null ? List.from(note.images) : [];
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_contentType = note?.contentType ?? 'markdown';
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_isEditing = note != null;
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}
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@override
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void dispose() {
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_contentController.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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return Scaffold(
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backgroundColor: Colors.white,
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appBar: AppBar(
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title: Text(_isEditing ? '编辑笔记' : '新建笔记'),
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actions: [
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TextButton(
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onPressed: _saveNote,
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child: const Text(
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'保存',
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style: TextStyle(
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fontSize: 16,
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fontWeight: FontWeight.w500,
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),
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),
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),
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const SizedBox(width: 8),
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],
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),
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body: Column(
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children: [
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// 顶部信息栏：创建时间 + 格式选择 + 标签
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Container(
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padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 8),
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decoration: const BoxDecoration(
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border: Border(
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bottom: BorderSide(color: Color(0xFFE5E5E5), width: 0.5),
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),
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),
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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Row(
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children: [
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// 创建时间
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Text(
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_formatDateTime(_createdAt),
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style: const TextStyle(
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fontSize: 12,
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color: Color(0xFF999999),
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),
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),
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const Spacer(),
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// 格式选择
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_buildFormatSelector(),
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],
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),
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const SizedBox(height: 8),
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// 标签
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_buildTagSelector(),
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],
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),
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),
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// 书写区域（纯文本模式下占据35%高度，Markdown模式下占据全部）
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if (_contentType == 'plain_text')
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SizedBox(
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height: MediaQuery.of(context).size.height * 0.35,
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child: TextField(
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controller: _contentController,
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maxLines: null,
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expands: true,
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textAlignVertical: TextAlignVertical.top,
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style: const TextStyle(
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fontSize: 16,
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color: Color(0xFF1A1A1A),
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height: 1.6,
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),
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decoration: const InputDecoration(
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hintText: '开始书写...',
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hintStyle: TextStyle(
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fontSize: 16,
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color: Color(0xFFCCCCCC),
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),
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border: InputBorder.none,
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contentPadding: EdgeInsets.all(16),
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),
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),
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)
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else
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Expanded(
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child: TextField(
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controller: _contentController,
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maxLines: null,
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expands: true,
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textAlignVertical: TextAlignVertical.top,
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style: const TextStyle(
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fontSize: 16,
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color: Color(0xFF1A1A1A),
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height: 1.6,
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),
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decoration: const InputDecoration(
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hintText: '使用 Markdown 格式书写...',
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hintStyle: TextStyle(
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fontSize: 16,
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color: Color(0xFFCCCCCC),
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),
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border: InputBorder.none,
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contentPadding: EdgeInsets.all(16),
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),
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),
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),
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// 纯文本模式下的图片区域
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if (_contentType == 'plain_text') ...[
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// 图片网格区域
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Expanded(
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child: Container(
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padding: const EdgeInsets.all(16),
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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// 标题栏
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Row(
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children: [
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const Text(
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'图片',
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style: TextStyle(
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fontSize: 14,
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fontWeight: FontWeight.w500,
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color: Color(0xFF1A1A1A),
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),
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),
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const SizedBox(width: 8),
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Text(
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'${_images.length}',
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style: const TextStyle(
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fontSize: 14,
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color: Color(0xFF999999),
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),
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),
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const Spacer(),
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// 添加图片按钮
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InkWell(
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onTap: _pickImage,
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child: Container(
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padding: const EdgeInsets.symmetric(horizontal: 12, vertical: 6),
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decoration: BoxDecoration(
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color: const Color(0xFF1A1A1A),
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borderRadius: BorderRadius.circular(2),
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),
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child: const Row(
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mainAxisSize: MainAxisSize.min,
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children: [
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Icon(
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Icons.add,
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size: 16,
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color: Colors.white,
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),
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SizedBox(width: 4),
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Text(
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'添加',
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style: TextStyle(
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fontSize: 12,
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color: Colors.white,
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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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const SizedBox(height: 12),
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// 图片网格（4列，正方形铺满）
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Expanded(
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child: _images.isEmpty
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? Center(
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child: Column(
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mainAxisAlignment: MainAxisAlignment.center,
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children: [
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Icon(
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Icons.image_outlined,
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size: 48,
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color: const Color(0xFFCCCCCC),
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),
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const SizedBox(height: 8),
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const Text(
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'点击添加按钮添加图片',
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style: TextStyle(
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fontSize: 13,
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color: Color(0xFF999999),
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),
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),
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],
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),
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)
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: GridView.builder(
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gridDelegate: const SliverGridDelegateWithFixedCrossAxisCount(
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crossAxisCount: 4,
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crossAxisSpacing: 8,
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mainAxisSpacing: 8,
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childAspectRatio: 1.0,
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),
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itemCount: _images.length,
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itemBuilder: (context, index) {
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return _buildImageItem(index);
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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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);
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}
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/// 构建格式选择器
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Widget _buildFormatSelector() {
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return GestureDetector(
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onTap: () => _showFormatSelector(),
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child: Container(
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padding: const EdgeInsets.symmetric(horizontal: 10, vertical: 4),
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decoration: BoxDecoration(
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border: Border.all(color: const Color(0xFFE5E5E5)),
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),
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child: Row(
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mainAxisSize: MainAxisSize.min,
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children: [
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Icon(
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_contentType == 'markdown' ? Icons.code : Icons.text_fields,
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size: 14,
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color: const Color(0xFF666666),
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),
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const SizedBox(width: 4),
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Text(
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_contentType == 'markdown' ? 'Markdown' : '纯文本',
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style: const TextStyle(
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fontSize: 12,
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color: Color(0xFF666666),
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),
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),
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const SizedBox(width: 4),
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const Icon(
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Icons.arrow_drop_down,
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size: 16,
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color: Color(0xFF999999),
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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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/// 显示格式选择对话框
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void _showFormatSelector() {
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showModalBottomSheet(
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context: context,
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backgroundColor: Colors.white,
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shape: const RoundedRectangleBorder(borderRadius: BorderRadius.zero),
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builder: (context) => SafeArea(
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child: Column(
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mainAxisSize: MainAxisSize.min,
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children: [
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ListTile(
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leading: const Icon(Icons.code, size: 20),
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title: const Text('Markdown'),
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subtitle: const Text('支持 Markdown 语法'),
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trailing: _contentType == 'markdown'
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? const Icon(Icons.check, color: Color(0xFF1A1A1A))
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: null,
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onTap: () {
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setState(() => _contentType = 'markdown');
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Navigator.pop(context);
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},
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),
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const Divider(height: 0.5, indent: 56),
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ListTile(
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leading: const Icon(Icons.text_fields, size: 20),
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title: const Text('纯文本'),
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subtitle: const Text('普通文本格式，支持图片'),
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trailing: _contentType == 'plain_text'
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? const Icon(Icons.check, color: Color(0xFF1A1A1A))
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: null,
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onTap: () {
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setState(() => _contentType = 'plain_text');
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Navigator.pop(context);
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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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/// 构建标签选择器
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Widget _buildTagSelector() {
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return Wrap(
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spacing: 8,
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runSpacing: 4,
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crossAxisAlignment: WrapCrossAlignment.center,
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children: [
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..._tags.asMap().entries.map((entry) {
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return Container(
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padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 2),
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decoration: BoxDecoration(
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color: const Color(0xFFF5F5F5),
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border: Border.all(color: const Color(0xFFE5E5E5)),
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),
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child: Row(
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mainAxisSize: MainAxisSize.min,
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children: [
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Text(
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entry.value,
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style: const TextStyle(
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fontSize: 12,
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color: Color(0xFF666666),
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),
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),
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const SizedBox(width: 4),
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GestureDetector(
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onTap: () => setState(() => _tags.removeAt(entry.key)),
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child: const Icon(
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Icons.close,
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size: 12,
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color: Color(0xFF999999),
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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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// 添加标签按钮
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GestureDetector(
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onTap: () => _showAddTagDialog(),
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child: Container(
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padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 2),
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decoration: BoxDecoration(
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border: Border.all(color: const Color(0xFFE5E5E5)),
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),
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child: const Row(
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mainAxisSize: MainAxisSize.min,
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children: [
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Icon(
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Icons.add,
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size: 12,
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color: Color(0xFF999999),
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),
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SizedBox(width: 2),
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Text(
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'标签',
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style: TextStyle(
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fontSize: 12,
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color: Color(0xFF999999),
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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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/// 显示添加标签对话框
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void _showAddTagDialog() {
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final controller = TextEditingController();
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showDialog(
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context: context,
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builder: (context) => AlertDialog(
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backgroundColor: Colors.white,
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elevation: 0,
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shape: const RoundedRectangleBorder(borderRadius: BorderRadius.zero),
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title: const Text(
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'添加标签',
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style: TextStyle(
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fontSize: 16,
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fontWeight: FontWeight.w600,
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),
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),
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content: TextField(
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controller: controller,
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autofocus: true,
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decoration: const InputDecoration(
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hintText: '输入标签名称',
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border: UnderlineInputBorder(),
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),
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onSubmitted: (value) {
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_addTag(value);
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Navigator.pop(context);
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},
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),
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actions: [
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TextButton(
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onPressed: () => Navigator.pop(context),
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child: const Text('取消', style: TextStyle(color: Color(0xFF666666))),
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),
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TextButton(
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onPressed: () {
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_addTag(controller.text);
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Navigator.pop(context);
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},
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child: const Text('添加'),
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),
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],
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),
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);
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}
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/// 添加标签
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void _addTag(String tag) {
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final trimmed = tag.trim();
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if (trimmed.isNotEmpty && !_tags.contains(trimmed)) {
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setState(() => _tags.add(trimmed));
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}
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}
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/// 格式化日期时间
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String _formatDateTime(DateTime date) {
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return '${date.year}-${date.month.toString().padLeft(2, '0')}-${date.day.toString().padLeft(2, '0')} ${date.hour.toString().padLeft(2, '0')}:${date.minute.toString().padLeft(2, '0')}';
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}
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/// 保存笔记
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Future<void> _saveNote() async {
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final content = _contentController.text.trim();
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if (content.isEmpty) {
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ToastUtil.show(context, '笔记内容不能为空');
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return;
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}
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final now = DateTime.now();
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if (_isEditing) {
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// 更新现有笔记
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final updatedNote = widget.note!.copyWith(
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content: content,
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contentType: _contentType,
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tags: _tags,
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images: _images,
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updatedAt: now,
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);
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await context.read<AppProvider>().updateNote(updatedNote);
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} else {
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// 添加新笔记 - 先创建笔记获取ID
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final noteId = now.millisecondsSinceEpoch.toString();
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// 如果有图片，需要移动到正确的ID目录
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List<String> finalImages = [];
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if (_images.isNotEmpty) {
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// 使用保存的临时ID，如果没有则使用当前noteId（理论上不会走到这里）
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final oldNoteId = _tempNoteId ?? noteId;
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final newNoteId = noteId;
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finalImages = await _moveImagesToNewId(oldNoteId, newNoteId);
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}
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final newNote = Note(
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id: noteId,
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content: content,
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contentType: _contentType,
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tags: _tags,
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images: finalImages.isNotEmpty ? finalImages : _images,
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createdAt: _createdAt,
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updatedAt: now,
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);
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await context.read<AppProvider>().addNote(newNote);
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}
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if (!mounted) return;
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ToastUtil.show(context, _isEditing ? '保存成功' : '添加成功');
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Navigator.pop(context);
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}
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/// 将图片从临时ID目录移动到新ID目录
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Future<List<String>> _moveImagesToNewId(String oldNoteId, String newNoteId) async {
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final List<String> newPaths = [];
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final newDir = await ImagePathHelper.instance.getNoteImagesDir(newNoteId);
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for (final imagePath in _images) {
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// 使用路径分隔符检查，兼容 Windows 和 Unix
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final normalizedPath = imagePath.replaceAll('\\', '/');
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if (normalizedPath.contains('/notes/$oldNoteId/')) {
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// 需要移动的文件
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final fileName = p.basename(imagePath);
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final newPath = p.join(newDir, fileName);
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await ImagePathHelper.instance.ensureDirExists(newDir);
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// 检查源文件是否存在
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final sourceFile = File(imagePath);
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if (await sourceFile.exists()) {
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await sourceFile.rename(newPath);
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newPaths.add(newPath);
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}
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} else {
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// 已经在正确位置的文件
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newPaths.add(imagePath);
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}
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}
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// 删除旧目录
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try {
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await ImagePathHelper.instance.deleteNoteImages(oldNoteId);
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} catch (e) {
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// 忽略删除失败
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}
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return newPaths;
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}
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/// 选择图片
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Future<void> _pickImage() async {
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try {
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final XFile? image = await _picker.pickImage(
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source: ImageSource.gallery,
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maxWidth: 1920,
|
||
maxHeight: 1920,
|
||
imageQuality: 85,
|
||
);
|
||
|
||
if (image != null) {
|
||
// 生成唯一的文件名
|
||
final fileName = '${DateTime.now().millisecondsSinceEpoch}.jpg';
|
||
|
||
// 如果是编辑模式，使用现有笔记ID；如果是新建模式，使用临时ID（保存时会替换）
|
||
String noteId;
|
||
if (_isEditing) {
|
||
noteId = widget.note!.id;
|
||
} else {
|
||
// 新建模式：使用已存在的临时ID或生成新的
|
||
noteId = _tempNoteId ?? DateTime.now().millisecondsSinceEpoch.toString();
|
||
_tempNoteId = noteId;
|
||
}
|
||
|
||
// 复制图片到应用目录: images/notes/{noteId}/{fileName}
|
||
final targetDir = await ImagePathHelper.instance.getNoteImagesDir(noteId);
|
||
await ImagePathHelper.instance.ensureDirExists(targetDir);
|
||
final targetPath = p.join(targetDir, fileName);
|
||
|
||
await File(image.path).copy(targetPath);
|
||
|
||
setState(() => _images.add(targetPath));
|
||
}
|
||
} catch (e) {
|
||
ToastUtil.show(context, '选择图片失败: $e');
|
||
}
|
||
}
|
||
|
||
/// 构建图片项
|
||
Widget _buildImageItem(int index) {
|
||
return InkWell(
|
||
onLongPress: () => _showDeleteImageDialog(index),
|
||
child: Container(
|
||
decoration: BoxDecoration(
|
||
border: Border.all(color: const Color(0xFFE5E5E5)),
|
||
),
|
||
child: Image.file(
|
||
File(_images[index]),
|
||
fit: BoxFit.cover,
|
||
),
|
||
),
|
||
);
|
||
}
|
||
|
||
/// 显示删除图片确认对话框
|
||
void _showDeleteImageDialog(int index) {
|
||
showDialog(
|
||
context: context,
|
||
builder: (context) => AlertDialog(
|
||
backgroundColor: Colors.white,
|
||
elevation: 0,
|
||
shape: const RoundedRectangleBorder(borderRadius: BorderRadius.zero),
|
||
title: const Text('确认删除'),
|
||
content: const Text('确定要删除这张图片吗？'),
|
||
actions: [
|
||
TextButton(
|
||
onPressed: () => Navigator.pop(context),
|
||
child: const Text('取消', style: TextStyle(color: Color(0xFF666666))),
|
||
),
|
||
TextButton(
|
||
onPressed: () {
|
||
setState(() => _images.removeAt(index));
|
||
Navigator.pop(context);
|
||
},
|
||
child: const Text('删除', style: TextStyle(color: Colors.red)),
|
||
),
|
||
],
|
||
),
|
||
);
|
||
}
|
||
}
|