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结构重构

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DelLevin-Home
2026-03-12 14:33:28 +08:00
parent f63b5b1843
commit 0f221456cb
39 changed files with 106 additions and 105 deletions
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import 'dart:io';
import 'package:flutter/material.dart';
import 'package:provider/provider.dart';
import 'package:image_picker/image_picker.dart';
import 'package:path/path.dart' as p;
import '../../providers/app_provider.dart';
import '../../models/data_models.dart';
import '../../utils/toast_util.dart';
import '../../utils/image_path_helper.dart';
/// 添加/编辑笔记页面 - 极简书写界面
class NoteFormPage extends StatefulWidget {
final Note? note;
const NoteFormPage({super.key, this.note});
@override
State<NoteFormPage> createState() => _NoteFormPageState();
}
class _NoteFormPageState extends State<NoteFormPage> {
late TextEditingController _contentController;
late DateTime _createdAt;
List<String> _tags = [];
List<String> _images = []; // 图片路径列表
String _contentType = 'markdown'; // markdown / plain_text
bool _isEditing = false;
final ImagePicker _picker = ImagePicker();
String? _tempNoteId; // 新建模式时使用的临时笔记ID
@override
void initState() {
super.initState();
final note = widget.note;
_contentController = TextEditingController(text: note?.content ?? '');
_createdAt = note?.createdAt ?? DateTime.now();
_tags = note != null ? List.from(note.tags) : [];
_images = note != null ? List.from(note.images) : [];
_contentType = note?.contentType ?? 'markdown';
_isEditing = note != null;
}
@override
void dispose() {
_contentController.dispose();
super.dispose();
}
@override
Widget build(BuildContext context) {
return Scaffold(
backgroundColor: Colors.white,
appBar: AppBar(
title: Text(_isEditing ? '编辑笔记' : '新建笔记'),
actions: [
TextButton(
onPressed: _saveNote,
child: const Text(
'保存',
style: TextStyle(
fontSize: 16,
fontWeight: FontWeight.w500,
),
),
),
const SizedBox(width: 8),
],
),
body: Column(
children: [
// 顶部信息栏：创建时间 + 格式选择 + 标签
Container(
padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 8),
decoration: const BoxDecoration(
border: Border(
bottom: BorderSide(color: Color(0xFFE5E5E5), width: 0.5),
),
),
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Row(
children: [
// 创建时间
Text(
_formatDateTime(_createdAt),
style: const TextStyle(
fontSize: 12,
color: Color(0xFF999999),
),
),
const Spacer(),
// 格式选择
_buildFormatSelector(),
],
),
const SizedBox(height: 8),
// 标签
_buildTagSelector(),
],
),
),
// 书写区域（纯文本模式下占据35%高度，Markdown模式下占据全部）
if (_contentType == 'plain_text')
SizedBox(
height: MediaQuery.of(context).size.height * 0.35,
child: TextField(
controller: _contentController,
maxLines: null,
expands: true,
textAlignVertical: TextAlignVertical.top,
style: const TextStyle(
fontSize: 16,
color: Color(0xFF1A1A1A),
height: 1.6,
),
decoration: const InputDecoration(
hintText: '开始书写...',
hintStyle: TextStyle(
fontSize: 16,
color: Color(0xFFCCCCCC),
),
border: InputBorder.none,
contentPadding: EdgeInsets.all(16),
),
),
)
else
Expanded(
child: TextField(
controller: _contentController,
maxLines: null,
expands: true,
textAlignVertical: TextAlignVertical.top,
style: const TextStyle(
fontSize: 16,
color: Color(0xFF1A1A1A),
height: 1.6,
),
decoration: const InputDecoration(
hintText: '使用 Markdown 格式书写...',
hintStyle: TextStyle(
fontSize: 16,
color: Color(0xFFCCCCCC),
),
border: InputBorder.none,
contentPadding: EdgeInsets.all(16),
),
),
),
// 纯文本模式下的图片区域
if (_contentType == 'plain_text') ...[
// 图片网格区域
Expanded(
child: Container(
padding: const EdgeInsets.all(16),
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
// 标题栏
Row(
children: [
const Text(
'图片',
style: TextStyle(
fontSize: 14,
fontWeight: FontWeight.w500,
color: Color(0xFF1A1A1A),
),
),
const SizedBox(width: 8),
Text(
'${_images.length}',
style: const TextStyle(
fontSize: 14,
color: Color(0xFF999999),
),
),
const Spacer(),
// 添加图片按钮
InkWell(
onTap: _pickImage,
child: Container(
padding: const EdgeInsets.symmetric(horizontal: 12, vertical: 6),
decoration: BoxDecoration(
color: const Color(0xFF1A1A1A),
borderRadius: BorderRadius.circular(2),
),
child: const Row(
mainAxisSize: MainAxisSize.min,
children: [
Icon(
Icons.add,
size: 16,
color: Colors.white,
),
SizedBox(width: 4),
Text(
'添加',
style: TextStyle(
fontSize: 12,
color: Colors.white,
),
),
],
),
),
),
],
),
const SizedBox(height: 12),
// 图片网格（4列，正方形铺满）
Expanded(
child: _images.isEmpty
? Center(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: [
Icon(
Icons.image_outlined,
size: 48,
color: const Color(0xFFCCCCCC),
),
const SizedBox(height: 8),
const Text(
'点击添加按钮添加图片',
style: TextStyle(
fontSize: 13,
color: Color(0xFF999999),
),
),
],
),
)
: GridView.builder(
gridDelegate: const SliverGridDelegateWithFixedCrossAxisCount(
crossAxisCount: 4,
crossAxisSpacing: 8,
mainAxisSpacing: 8,
childAspectRatio: 1.0,
),
itemCount: _images.length,
itemBuilder: (context, index) {
return _buildImageItem(index);
},
),
),
],
),
),
),
],
],
),
);
}
/// 构建格式选择器
Widget _buildFormatSelector() {
return GestureDetector(
onTap: () => _showFormatSelector(),
child: Container(
padding: const EdgeInsets.symmetric(horizontal: 10, vertical: 4),
decoration: BoxDecoration(
border: Border.all(color: const Color(0xFFE5E5E5)),
),
child: Row(
mainAxisSize: MainAxisSize.min,
children: [
Icon(
_contentType == 'markdown' ? Icons.code : Icons.text_fields,
size: 14,
color: const Color(0xFF666666),
),
const SizedBox(width: 4),
Text(
_contentType == 'markdown' ? 'Markdown' : '纯文本',
style: const TextStyle(
fontSize: 12,
color: Color(0xFF666666),
),
),
const SizedBox(width: 4),
const Icon(
Icons.arrow_drop_down,
size: 16,
color: Color(0xFF999999),
),
],
),
),
);
}
/// 显示格式选择对话框
void _showFormatSelector() {
showModalBottomSheet(
context: context,
backgroundColor: Colors.white,
shape: const RoundedRectangleBorder(borderRadius: BorderRadius.zero),
builder: (context) => SafeArea(
child: Column(
mainAxisSize: MainAxisSize.min,
children: [
ListTile(
leading: const Icon(Icons.code, size: 20),
title: const Text('Markdown'),
subtitle: const Text('支持 Markdown 语法'),
trailing: _contentType == 'markdown'
? const Icon(Icons.check, color: Color(0xFF1A1A1A))
: null,
onTap: () {
setState(() => _contentType = 'markdown');
Navigator.pop(context);
},
),
const Divider(height: 0.5, indent: 56),
ListTile(
leading: const Icon(Icons.text_fields, size: 20),
title: const Text('纯文本'),
subtitle: const Text('普通文本格式，支持图片'),
trailing: _contentType == 'plain_text'
? const Icon(Icons.check, color: Color(0xFF1A1A1A))
: null,
onTap: () {
setState(() => _contentType = 'plain_text');
Navigator.pop(context);
},
),
],
),
),
);
}
/// 构建标签选择器
Widget _buildTagSelector() {
return Wrap(
spacing: 8,
runSpacing: 4,
crossAxisAlignment: WrapCrossAlignment.center,
children: [
..._tags.asMap().entries.map((entry) {
return Container(
padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 2),
decoration: BoxDecoration(
color: const Color(0xFFF5F5F5),
border: Border.all(color: const Color(0xFFE5E5E5)),
),
child: Row(
mainAxisSize: MainAxisSize.min,
children: [
Text(
entry.value,
style: const TextStyle(
fontSize: 12,
color: Color(0xFF666666),
),
),
const SizedBox(width: 4),
GestureDetector(
onTap: () => setState(() => _tags.removeAt(entry.key)),
child: const Icon(
Icons.close,
size: 12,
color: Color(0xFF999999),
),
),
],
),
);
}),
// 添加标签按钮
GestureDetector(
onTap: () => _showAddTagDialog(),
child: Container(
padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 2),
decoration: BoxDecoration(
border: Border.all(color: const Color(0xFFE5E5E5)),
),
child: const Row(
mainAxisSize: MainAxisSize.min,
children: [
Icon(
Icons.add,
size: 12,
color: Color(0xFF999999),
),
SizedBox(width: 2),
Text(
'标签',
style: TextStyle(
fontSize: 12,
color: Color(0xFF999999),
),
),
],
),
),
),
],
);
}
/// 显示添加标签对话框
void _showAddTagDialog() {
final controller = TextEditingController();
// 获取所有已有标签（从所有笔记中收集）
final provider = context.read<AppProvider>();
final allTags = _getAllExistingTags(provider);
// 过滤掉已添加的标签
final availableTags = allTags.where((tag) => !_tags.contains(tag)).toList();
showDialog(
context: context,
builder: (context) => AlertDialog(
backgroundColor: Colors.white,
elevation: 0,
shape: const RoundedRectangleBorder(borderRadius: BorderRadius.zero),
title: const Text(
'添加标签',
style: TextStyle(
fontSize: 16,
fontWeight: FontWeight.w600,
),
),
content: SizedBox(
width: double.maxFinite,
child: Column(
mainAxisSize: MainAxisSize.min,
crossAxisAlignment: CrossAxisAlignment.start,
children: [
// 输入框
TextField(
controller: controller,
autofocus: true,
decoration: const InputDecoration(
hintText: '输入新标签名称',
border: UnderlineInputBorder(),
),
onSubmitted: (value) {
_addTag(value);
Navigator.pop(context);
},
),
// 已有标签列表
if (availableTags.isNotEmpty) ...[
const SizedBox(height: 16),
const Text(
'或选择已有标签：',
style: TextStyle(
fontSize: 12,
color: Color(0xFF999999),
),
),
const SizedBox(height: 8),
Wrap(
spacing: 8,
runSpacing: 8,
children: availableTags.map((tag) {
return GestureDetector(
onTap: () {
_addTag(tag);
Navigator.pop(context);
},
child: Container(
padding: const EdgeInsets.symmetric(horizontal: 12, vertical: 6),
decoration: BoxDecoration(
color: const Color(0xFFF5F5F5),
border: Border.all(color: const Color(0xFFE5E5E5)),
borderRadius: BorderRadius.circular(4),
),
child: Text(
tag,
style: const TextStyle(
fontSize: 13,
color: Color(0xFF666666),
),
),
),
);
}).toList(),
),
],
],
),
),
actions: [
TextButton(
onPressed: () => Navigator.pop(context),
child: const Text('取消', style: TextStyle(color: Color(0xFF666666))),
),
TextButton(
onPressed: () {
_addTag(controller.text);
Navigator.pop(context);
},
child: const Text('添加'),
),
],
),
);
}
/// 获取所有已有标签（从所有笔记中收集）
List<String> _getAllExistingTags(AppProvider provider) {
final allTags = <String>{};
for (final note in provider.notes) {
allTags.addAll(note.tags);
}
return allTags.toList()..sort();
}
/// 添加标签
void _addTag(String tag) {
final trimmed = tag.trim();
if (trimmed.isNotEmpty && !_tags.contains(trimmed)) {
setState(() => _tags.add(trimmed));
}
}
/// 格式化日期时间
String _formatDateTime(DateTime date) {
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')}';
}
/// 保存笔记
Future<void> _saveNote() async {
final content = _contentController.text.trim();
if (content.isEmpty) {
ToastUtil.show(context, '笔记内容不能为空');
return;
}
final now = DateTime.now();
if (_isEditing) {
// 更新现有笔记
final updatedNote = widget.note!.copyWith(
content: content,
contentType: _contentType,
tags: _tags,
images: _images,
updatedAt: now,
);
await context.read<AppProvider>().updateNote(updatedNote);
} else {
// 添加新笔记 - 先创建笔记获取ID
final noteId = now.millisecondsSinceEpoch.toString();
// 如果有图片，需要移动到正确的ID目录
List<String> finalImages = [];
if (_images.isNotEmpty) {
// 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）
final oldNoteId = _tempNoteId ?? noteId;
final newNoteId = noteId;
finalImages = await _moveImagesToNewId(oldNoteId, newNoteId);
}
final newNote = Note(
id: noteId,
content: content,
contentType: _contentType,
tags: _tags,
images: finalImages.isNotEmpty ? finalImages : _images,
createdAt: _createdAt,
updatedAt: now,
);
await context.read<AppProvider>().addNote(newNote);
}
if (!mounted) return;
ToastUtil.show(context, _isEditing ? '保存成功' : '添加成功');
Navigator.pop(context);
}
/// 将图片从临时ID目录移动到新ID目录
Future<List<String>> _moveImagesToNewId(String oldNoteId, String newNoteId) async {
final List<String> newPaths = [];
final newDir = await ImagePathHelper.instance.getNoteImagesDir(newNoteId);
for (final imagePath in _images) {
// 使用路径分隔符检查，兼容 Windows 和 Unix
final normalizedPath = imagePath.replaceAll('\\', '/');
if (normalizedPath.contains('/notes/$oldNoteId/')) {
// 需要移动的文件
final fileName = p.basename(imagePath);
final newPath = p.join(newDir, fileName);
await ImagePathHelper.instance.ensureDirExists(newDir);
// 检查源文件是否存在
final sourceFile = File(imagePath);
if (await sourceFile.exists()) {
await sourceFile.rename(newPath);
newPaths.add(newPath);
}
} else {
// 已经在正确位置的文件
newPaths.add(imagePath);
}
}
// 删除旧目录
try {
await ImagePathHelper.instance.deleteNoteImages(oldNoteId);
} catch (e) {
// 忽略删除失败
}
return newPaths;
}
/// 选择图片
Future<void> _pickImage() async {
try {
final XFile? image = await _picker.pickImage(
source: ImageSource.gallery,
maxWidth: 1920,
maxHeight: 1920,
imageQuality: 85,
);
if (image != null) {
// 生成唯一的文件名
final fileName = '${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(
onTap: () => _showImagePreview(index),
onLongPress: () => _showDeleteImageDialog(index),
child: Container(
decoration: BoxDecoration(
border: Border.all(color: const Color(0xFFE5E5E5)),
),
child: Image.file(
File(_images[index]),
fit: BoxFit.cover,
),
),
);
}
/// 显示图片预览
void _showImagePreview(int index) {
showDialog(
context: context,
barrierDismissible: true,
builder: (context) => GestureDetector(
onTap: () => Navigator.pop(context),
child: Container(
color: Colors.black.withOpacity(0.9),
child: Center(
child: InteractiveViewer(
panEnabled: true,
boundaryMargin: const EdgeInsets.all(20),
minScale: 0.5,
maxScale: 4,
child: Image.file(
File(_images[index]),
fit: BoxFit.contain,
),
),
),
),
),
);
}
/// 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)),
),
],
),
);
}
}