9 changed files with 292 additions and 352 deletions
@ -0,0 +1,67 @@
@@ -0,0 +1,67 @@
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import 'package:flutter/material.dart'; |
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|
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class EditorToolbar extends StatelessWidget { |
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final String title; |
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final String text; |
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final bool isLoading; |
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final VoidCallback onOpenFile; |
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final VoidCallback onCopyToClipboard; |
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final VoidCallback onSaveFile; |
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const EditorToolbar({ |
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super.key, |
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required this.title, |
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required this.text, |
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required this.isLoading, |
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required this.onOpenFile, |
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required this.onCopyToClipboard, |
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required this.onSaveFile, |
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}); |
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@override |
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Widget build(BuildContext context) { |
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return Container( |
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height: 40, |
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padding: const EdgeInsets.symmetric(horizontal: 16), |
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decoration: BoxDecoration(color: Colors.grey[100]), |
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child: Row( |
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mainAxisAlignment: MainAxisAlignment.spaceBetween, |
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children: [ |
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Text(title, style: const TextStyle(fontWeight: FontWeight.bold)), |
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_buildActionButtons(context), |
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], |
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), |
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); |
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} |
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Widget _buildActionButtons(BuildContext context) { |
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return Row( |
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children: [ |
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IconButton( |
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icon: const Icon(Icons.folder_open, size: 20), |
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tooltip: '打开文件', |
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onPressed: isLoading ? null : onOpenFile, |
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), |
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IconButton( |
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icon: const Icon(Icons.content_copy, size: 20), |
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tooltip: '复制内容', |
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onPressed: text.isEmpty ? null : onCopyToClipboard, |
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), |
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IconButton( |
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icon: const Icon(Icons.save, size: 20), |
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tooltip: '保存到文件', |
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onPressed: text.isEmpty ? null : onSaveFile, |
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), |
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if (isLoading) |
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const Padding( |
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padding: EdgeInsets.only(left: 8), |
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child: SizedBox( |
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width: 16, |
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height: 16, |
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child: CircularProgressIndicator(strokeWidth: 2), |
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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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@ -1,163 +0,0 @@
@@ -1,163 +0,0 @@
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import 'dart:convert'; |
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import 'dart:io'; |
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import 'package:flutter/material.dart'; |
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import 'package:flutter/services.dart'; |
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import 'package:file_picker/file_picker.dart'; |
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import 'text_editor_controller.dart'; |
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class TextEditorActions { |
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static Future<void> openFile(BuildContext context, TextEditorController controller) async { |
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final result = await FilePicker.platform.pickFiles(type: FileType.any, allowMultiple: false); |
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if (result != null && result.files.single.path != null) { |
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await _loadFile(context, controller, result.files.single.path!); |
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} |
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} |
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static Future<void> copyToClipboard(BuildContext context, String content) async { |
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await Clipboard.setData(ClipboardData(text: content)); |
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if (context.mounted) { |
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ScaffoldMessenger.of(context).showSnackBar(const SnackBar(content: Text('已复制到剪贴板'))); |
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} |
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} |
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static Future<void> saveFile(BuildContext context, String content) async { |
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try { |
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String? outputPath = await FilePicker.platform.saveFile( |
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dialogTitle: '保存文件', |
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fileName: 'untitled.txt', |
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allowedExtensions: ['txt'], |
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type: FileType.any, |
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); |
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if (outputPath == null) return; |
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final file = File(outputPath); |
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if (await file.exists()) { |
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final shouldOverwrite = await showDialog<bool>( |
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context: context, |
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builder: |
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(context) => AlertDialog( |
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title: const Text('文件已存在'), |
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content: const Text('要覆盖现有文件吗？'), |
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actions: [ |
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TextButton( |
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onPressed: () => Navigator.pop(context, false), |
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child: const Text('取消'), |
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), |
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TextButton( |
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onPressed: () => Navigator.pop(context, true), |
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child: const Text('覆盖'), |
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), |
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], |
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), |
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); |
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if (shouldOverwrite != true) return; |
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} |
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await file.writeAsString(content); |
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if (context.mounted) { |
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ScaffoldMessenger.of(context).showSnackBar(SnackBar(content: Text('已保存到: ${file.path}'))); |
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} |
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} on FileSystemException catch (e) { |
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if (context.mounted) { |
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ScaffoldMessenger.of(context).showSnackBar(SnackBar(content: Text('保存失败: ${e.message}'))); |
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} |
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} catch (e) { |
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if (context.mounted) { |
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ScaffoldMessenger.of( |
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context, |
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).showSnackBar(SnackBar(content: Text('保存失败: ${e.toString()}'))); |
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} |
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} |
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} |
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static Future<void> _loadFile( |
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BuildContext context, |
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TextEditorController controller, |
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String filePath, |
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) async { |
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try { |
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controller.setLoading(true); |
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final file = File(filePath); |
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final fileSize = await file.length(); |
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if (fileSize > controller.maxFileSize) { |
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if (context.mounted) { |
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ScaffoldMessenger.of( |
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context, |
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).showSnackBar(const SnackBar(content: Text('文件过大(超过1MB)，无法处理'))); |
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} |
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return; |
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} |
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if (!controller.isEmpty) { |
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final confirm = await showDialog<bool>( |
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context: context, |
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builder: |
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(context) => AlertDialog( |
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title: const Text('确认提示'), |
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content: const Text('确认是否打开新的文件？打开后将覆盖当前内容'), |
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actions: [ |
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TextButton( |
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onPressed: () => Navigator.pop(context, false), |
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child: const Text('取消'), |
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), |
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TextButton( |
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onPressed: () => Navigator.pop(context, true), |
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child: const Text('确认'), |
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), |
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], |
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), |
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); |
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if (confirm != true) return; |
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} |
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final fileName = file.path.split('\\').last; |
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controller.updateContent(''); |
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controller.onContentChanged?.call('', fileName); |
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final stream = file.openRead(); |
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final lines = stream.transform(utf8.decoder).transform(const LineSplitter()); |
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await for (final line in lines) { |
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if (!controller.textController.hasListeners) break; |
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controller.textController.text += '$line\n'; |
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controller.onContentChanged?.call(controller.content, fileName); |
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WidgetsBinding.instance.addPostFrameCallback((_) { |
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controller.scrollController.jumpTo(controller.scrollController.position.maxScrollExtent); |
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}); |
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await Future.delayed(const Duration(milliseconds: 10)); |
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} |
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controller.onFileLoaded?.call(file.path); |
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if (context.mounted) { |
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ScaffoldMessenger.of(context).showSnackBar(SnackBar(content: Text('已加载: ${file.path}'))); |
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} |
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} on FormatException { |
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if (context.mounted) { |
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ScaffoldMessenger.of(context).showSnackBar(const SnackBar(content: Text('这不是可读的文本文件'))); |
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} |
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} on FileSystemException catch (e) { |
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if (context.mounted) { |
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ScaffoldMessenger.of(context).showSnackBar(SnackBar(content: Text('文件访问错误: ${e.message}'))); |
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} |
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} catch (e) { |
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if (context.mounted) { |
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ScaffoldMessenger.of( |
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context, |
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).showSnackBar(SnackBar(content: Text('读取失败: ${e.toString()}'))); |
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} |
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} finally { |
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controller.setLoading(false); |
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} |
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} |
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} |
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@ -1,42 +0,0 @@
@@ -1,42 +0,0 @@
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import 'package:flutter/material.dart'; |
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class TextEditorController { |
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final TextEditingController textController; |
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final FocusNode focusNode; |
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final ScrollController scrollController; |
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final Function(String, String?)? onContentChanged; |
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final Function(String)? onFileLoaded; |
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bool _isLoading = false; |
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static const int _maxFileSize = 1024 * 1024; // 1MB |
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TextEditorController({String? initialContent, this.onContentChanged, this.onFileLoaded}) |
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: textController = TextEditingController(text: initialContent ?? ''), |
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focusNode = FocusNode(), |
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scrollController = ScrollController(); |
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bool get isLoading => _isLoading; |
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bool get hasFocus => focusNode.hasFocus; |
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bool get isEmpty => textController.text.isEmpty; |
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String get content => textController.text; |
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int get contentLength => textController.text.length; |
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int get maxFileSize => _maxFileSize; |
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void updateContent(String content) { |
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textController.text = content; |
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} |
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void handleContentChanged(String text) { |
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onContentChanged?.call(text, null); |
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} |
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void setLoading(bool loading) { |
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_isLoading = loading; |
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} |
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void dispose() { |
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textController.dispose(); |
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focusNode.dispose(); |
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scrollController.dispose(); |
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} |
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} |
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