增加高亮显示

win_text_editor/lib/app/widgets/text_tab.dart

@@ -3,7 +3,10 @@ import 'package:provider/provider.dart';
 import 'package:flutter/services.dart'; // 复制功能需要
 import 'package:win_text_editor/app/providers/editor_provider.dart';
 import 'package:file_picker/file_picker.dart';
-import 'dart:io'; // 用于文件操作
+import 'dart:io';
+import 'package:flutter_highlight/flutter_highlight.dart';
+import 'package:flutter_highlight/themes/github.dart';
+import 'package:flutter_highlight/themes/monokai-sublime.dart';
 
 class TextTab extends StatefulWidget {
   final String tabId;
@@ -17,39 +20,91 @@ class TextTab extends StatefulWidget {
 class _TextTabState extends State<TextTab> {
   late TextEditingController _controller;
   late EditorProvider _provider;
+  late FocusNode _focusNode;
+  String _language = 'plaintext';
 
   @override
   void initState() {
     super.initState();
     _provider = Provider.of<EditorProvider>(context, listen: false);
     _controller = TextEditingController(text: _getCurrentContent());
+    _focusNode = FocusNode();
+    _detectLanguage();
   }
 
   String _getCurrentContent() {
     return _provider.tabs.firstWhere((t) => t.id == widget.tabId).content;
   }
 
+  void _detectLanguage() {
+    final tab = _provider.tabs.firstWhere((t) => t.id == widget.tabId);
+    final fileName = tab.title.toLowerCase();
+    final content = tab.content.trim();
+
+    if (fileName.endsWith('.dart')) {
+      _language = 'dart';
+    } else if (fileName.endsWith('.java')) {
+      _language = 'java';
+    } else if (fileName.endsWith('.py')) {
+      _language = 'python';
+    } else if (fileName.endsWith('.js')) {
+      _language = 'javascript';
+    } else if (fileName.endsWith('.html')) {
+      _language = 'html';
+    } else if (fileName.endsWith('.css')) {
+      _language = 'css';
+    } else if (fileName.endsWith('.json')) {
+      _language = 'json';
+    } else if (fileName.endsWith('.yaml') || fileName.endsWith('.yml')) {
+      _language = 'yaml';
+    } else if (fileName.endsWith('.xml')) {
+      _language = 'xml';
+    }
+    // 如果扩展名未识别，检查内容特征
+    else if (_isLikelyXml(content)) {
+      _language = 'xml';
+    } else {
+      _language = 'plaintext';
+    }
+  }
+
+  bool _isLikelyXml(String content) {
+    if (content.isEmpty) return false;
+
+    // 简单检查：内容以'<'开头，以'>'结尾
+    final trimmed = content.trim();
+    if (!trimmed.startsWith('<') || !trimmed.endsWith('>')) {
+      return false;
+    }
+
+    // 更复杂的检查：包含常见的XML标签模式
+    final xmlTagRegex = RegExp(r'<[^/>]+>.*<\/[^>]+>|<[^/>]+\/>');
+    return xmlTagRegex.hasMatch(content);
+  }
+
   @override
   void didUpdateWidget(TextTab oldWidget) {
     super.didUpdateWidget(oldWidget);
     if (oldWidget.tabId != widget.tabId) {
       _controller.text = _getCurrentContent();
+      _detectLanguage();
     }
   }
 
   @override
   void dispose() {
     _controller.dispose();
+    _focusNode.dispose();
     super.dispose();
   }
 
   @override
   Widget build(BuildContext context) {
-    final tab = _provider.tabs.firstWhere((t) => t.id == widget.tabId); // Add this line
+    final tab = _provider.tabs.firstWhere((t) => t.id == widget.tabId);
+    final isDarkMode = Theme.of(context).brightness == Brightness.dark;
 
     return Column(
       children: [
-        // 新增工具条
         Container(
           height: 40,
           padding: const EdgeInsets.symmetric(horizontal: 16),
@@ -82,21 +137,64 @@ class _TextTabState extends State<TextTab> {
                     tooltip: '保存到文件',
                     onPressed: tab.content.isEmpty ? null : () => _saveFile(context, tab.content),
                   ),
+                  DropdownButton<String>(
+                    value: _language,
+                    icon: const Icon(Icons.code, size: 20),
+                    underline: Container(),
+                    onChanged: (String? newValue) {
+                      setState(() {
+                        _language = newValue!;
+                      });
+                    },
+                    items:
+                        <String>[
+                          'plaintext',
+                          'dart',
+                          'java',
+                          'python',
+                          'javascript',
+                          'html',
+                          'css',
+                          'json',
+                          'yaml',
+                        ].map<DropdownMenuItem<String>>((String value) {
+                          return DropdownMenuItem<String>(value: value, child: Text(value));
+                        }).toList(),
+                  ),
                 ],
               ),
             ],
           ),
         ),
-        // 文本编辑区
         Expanded(
-          child: TextField(
-            controller: _controller,
-            maxLines: null,
-            onChanged: (text) => _provider.updateContent(widget.tabId, text),
-            decoration: const InputDecoration(
-              border: InputBorder.none,
-              contentPadding: EdgeInsets.all(16),
-            ),
+          child: Stack(
+            children: [
+              // 高亮显示的背景文本
+              HighlightView(
+                tab.content,
+                language: _language,
+                theme: isDarkMode ? monokaiSublimeTheme : githubTheme,
+                padding: const EdgeInsets.all(16),
+                textStyle: const TextStyle(fontFamily: 'monospace', fontSize: 14),
+              ),
+              // 实际可编辑的TextField
+              TextField(
+                controller: _controller,
+                focusNode: _focusNode,
+                maxLines: null,
+                onChanged: (text) => _provider.updateContent(widget.tabId, text),
+                decoration: const InputDecoration(
+                  border: InputBorder.none,
+                  contentPadding: EdgeInsets.all(16),
+                ),
+                style: const TextStyle(
+                  fontFamily: 'monospace',
+                  fontSize: 14,
+                  color: Colors.transparent, // 使文本透明，只显示高亮背景
+                ),
+                cursorColor: Colors.black, // 光标颜色
+              ),
+            ],
           ),
         ),
       ],
@@ -110,14 +208,12 @@ class _TextTabState extends State<TextTab> {
 
       if (result != null && result.files.single.path != null) {
         final file = File(result.files.single.path!);
-
-        // 尝试读取文件内容
         final content = await file.readAsString();
 
-        // 同时更新Provider和控制器
         _provider.updateContent(widget.tabId, content);
         setState(() {
           _controller.text = content;
+          _detectLanguage();
         });
 
         // 强制刷新文本控制器
@@ -126,10 +222,8 @@ class _TextTabState extends State<TextTab> {
         }
       }
     } on FormatException {
-      // 二进制文件错误
       ScaffoldMessenger.of(context).showSnackBar(const SnackBar(content: Text('这不是可读的文本文件')));
     } on FileSystemException catch (e) {
-      // 文件系统错误
       ScaffoldMessenger.of(context).showSnackBar(SnackBar(content: Text('文件访问错误: ${e.message}')));
     } catch (e) {
       if (context.mounted) {
@@ -160,7 +254,7 @@ class _TextTabState extends State<TextTab> {
         type: FileType.any,
       );
 
-      if (outputPath == null) return; // 用户取消了
+      if (outputPath == null) return;
 
       final file = File(outputPath);
 
@@ -186,7 +280,7 @@ class _TextTabState extends State<TextTab> {
               ),
         );
 
-        if (shouldOverwrite != true) return; // 用户选择不覆盖
+        if (shouldOverwrite != true) return;
       }
 
       // 写入文件

win_text_editor/pubspec.lock

@@ -126,6 +126,14 @@ packages:
     description: flutter
     source: sdk
     version: "0.0.0"
+  flutter_highlight:
+    dependency: "direct main"
+    description:
+      name: flutter_highlight
+      sha256: "7b96333867aa07e122e245c033b8ad622e4e3a42a1a2372cbb098a2541d8782c"
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "0.7.0"
   flutter_lints:
     dependency: "direct dev"
     description:
@@ -160,6 +168,14 @@ packages:
     description: flutter
     source: sdk
     version: "0.0.0"
+  highlight:
+    dependency: "direct main"
+    description:
+      name: highlight
+      sha256: "5353a83ffe3e3eca7df0abfb72dcf3fa66cc56b953728e7113ad4ad88497cf21"
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "0.7.0"
   leak_tracker:
     dependency: transitive
     description:

win_text_editor/pubspec.yaml

@@ -12,12 +12,12 @@ dependencies:
   provider: ^6.1.5
   path_provider: ^2.1.5
   file_picker: ^10.1.5
-  # flutter_highlight: ^0.7.0
-  # highlight: ^0.7.0
   window_manager: ^0.3.1
   bitsdojo_window: ^0.1.1+2
   flutter_syntax_view: ^4.1.7
   expandable: ^5.0.1
+  flutter_highlight: ^0.7.0
+  highlight: ^0.7.0
 
 
 dev_dependencies: