diff --git a/win_text_editor/lib/app/providers/editor_provider.dart b/win_text_editor/lib/app/providers/editor_provider.dart
new file mode 100644
index 0000000..7d84b06
--- /dev/null
+++ b/win_text_editor/lib/app/providers/editor_provider.dart
@@ -0,0 +1,142 @@
+import 'dart:math';
+
+import 'package:flutter/material.dart';
+import 'package:win_text_editor/app/providers/logger.dart';
+
+class EditorProvider with ChangeNotifier {
+  final List<EditorTab> _tabs = [];
+  String? _activeTabId;
+  bool _isLoading = false;
+
+  List<EditorTab> get tabs => _tabs;
+  String? get activeTabId => _activeTabId;
+  bool get isLoading => _isLoading;
+
+  int _templateTabCounter = 1;
+
+  final Map<String, bool> _tabLoadingStates = {};
+  final Map<String, int> _tabLoadedChunks = {};
+
+  bool isTabLoading(String tabId) => _tabLoadingStates[tabId] ?? false;
+  int getLoadedChunks(String tabId) => _tabLoadedChunks[tabId] ?? 0;
+
+  EditorTab? get activeTab {
+    if (_activeTabId == null) return null;
+    try {
+      return _tabs.firstWhere((tab) => tab.id == _activeTabId);
+    } catch (e) {
+      Logger().error("找不到活动选项卡: $_activeTabId", source: 'EditorProvider');
+      return null;
+    }
+  }
+
+  void addTab() {
+    final tabId = DateTime.now().millisecondsSinceEpoch.toString();
+    _tabs.add(
+      EditorTab(
+        id: tabId,
+        title: '模板解析[$_templateTabCounter]',
+        chunks: [], // 显式初始化
+        content: '',
+      ),
+    );
+    _templateTabCounter++;
+    _activeTabId = tabId;
+    notifyListeners();
+  }
+
+  void closeTab(String tabId) {
+    Logger().info('关闭选项卡: $tabId');
+    _tabs.removeWhere((tab) => tab.id == tabId);
+    if (_activeTabId == tabId) {
+      _activeTabId = _tabs.isNotEmpty ? _tabs.last.id : null;
+    }
+    notifyListeners();
+  }
+
+  void setActiveTab(String tabId) {
+    Logger().info('设置活动选项卡: $tabId');
+    _activeTabId = tabId;
+    notifyListeners();
+  }
+
+  Future<void> updateContent(String tabId, String content, String? name) async {
+    _isLoading = true;
+    notifyListeners();
+
+    try {
+      final index = _tabs.indexWhere((t) => t.id == tabId);
+      if (index == -1) throw Exception("Tab not found");
+
+      _tabs[index] = EditorTab(
+        id: _tabs[index].id,
+        title: _tabs[index].title,
+        chunks: content.split('\n'), // 同步更新 chunks
+        fileName: name ?? _tabs[index].fileName,
+        content: content,
+      );
+    } finally {
+      _isLoading = false;
+      notifyListeners();
+    }
+  }
+
+  // 在 EditorProvider 中修改文件加载逻辑
+  Future<void> updateContentInChunks(String tabId, String fullContent, String? fileName) async {
+    final lines = fullContent.split('\n');
+    const linesPerChunk = 1000; // 每1000行一个块
+
+    _tabLoadingStates[tabId] = true;
+    notifyListeners();
+
+    try {
+      // 清空现有内容
+      final index = _tabs.indexWhere((t) => t.id == tabId);
+      _tabs[index] = EditorTab(
+        id: tabId,
+        title: fileName ?? _tabs[index].title,
+        chunks: [],
+        fileName: fileName,
+      );
+
+      // 分块加载行
+      for (int i = 0; i < lines.length; i += linesPerChunk) {
+        if (!_tabLoadingStates[tabId]!) break; // 检查是否取消
+
+        final chunkLines = lines.sublist(i, min(i + linesPerChunk, lines.length));
+        _tabs[index].chunks!.addAll(chunkLines);
+
+        notifyListeners();
+        await Future.delayed(Duration.zero); // 让UI更新
+      }
+    } finally {
+      _tabLoadingStates.remove(tabId);
+      notifyListeners();
+    }
+  }
+
+  void cancelLoading(String tabId) {
+    _tabLoadingStates[tabId] = false;
+    notifyListeners();
+  }
+}
+
+class EditorTab {
+  final String id;
+  String title;
+  List<String> chunks; // 移除可空标记，改为非空
+  String? fileName;
+  bool isHighlightEnabled;
+  String content;
+
+  EditorTab({
+    required this.id,
+    required this.title,
+    List<String>? chunks, // 参数可选，但类内部非空
+    this.fileName,
+    this.isHighlightEnabled = true,
+    this.content = '',
+  }) : chunks = chunks ?? []; // 默认值为空列表
+
+  String get fullContent => chunks.join('\n'); // 用换行符连接
+}
diff --git a/win_text_editor/lib/app/utils/file_utils.dart b/win_text_editor/lib/app/utils/file_utils.dart
new file mode 100644
index 0000000..f8b7ef1
--- /dev/null
+++ b/win_text_editor/lib/app/utils/file_utils.dart
@@ -0,0 +1,59 @@
+// file_utils.dart
+import 'dart:async';
+import 'dart:io';
+import 'package:flutter/material.dart';
+import 'package:file_picker/file_picker.dart';
+import 'package:win_text_editor/app/providers/logger.dart';
+
+class FileUtils {
+  static Future<String?> pickFile(BuildContext context) async {
+    try {
+      final result = await FilePicker.platform.pickFiles(type: FileType.any, allowMultiple: false);
+      return result?.files.single.path;
+    } catch (e) {
+      Logger().error('选择文件失败: ${e.toString()}');
+      if (context.mounted) {
+        ScaffoldMessenger.of(
+          context,
+        ).showSnackBar(SnackBar(content: Text('选择文件失败: ${e.toString()}')));
+      }
+      return null;
+    }
+  }
+
+  static Future<String?> readFileContent(
+    BuildContext context,
+    String filePath, {
+    Duration timeout = const Duration(seconds: 30),
+  }) async {
+    try {
+      final content = await File(filePath).readAsString().timeout(
+        timeout,
+        onTimeout: () {
+          throw TimeoutException('文件加载超时，可能文件过大');
+        },
+      );
+      return content;
+    } on FormatException {
+      if (context.mounted) {
+        ScaffoldMessenger.of(context).showSnackBar(const SnackBar(content: Text('这不是可读的文本文件')));
+      }
+      return null;
+    } on FileSystemException catch (e) {
+      if (context.mounted) {
+        ScaffoldMessenger.of(context).showSnackBar(SnackBar(content: Text('文件访问错误: ${e.message}')));
+      }
+      return null;
+    } catch (e) {
+      Logger().error('读取文件失败: ${e.toString()}');
+      if (context.mounted) {
+        ScaffoldMessenger.of(
+          context,
+        ).showSnackBar(SnackBar(content: Text('读取失败: ${e.toString()}')));
+      }
+      return null;
+    }
+  }
+
+  // 移除showLoadingDialog方法，因为现在直接在调用处处理
+}
diff --git a/win_text_editor/lib/app/widgets/file_explorer.dart b/win_text_editor/lib/app/widgets/file_explorer.dart
index af9ea21..93ad8de 100644
--- a/win_text_editor/lib/app/widgets/file_explorer.dart
+++ b/win_text_editor/lib/app/widgets/file_explorer.dart
@@ -1,11 +1,13 @@
+import 'dart:io';
+
 import 'package:file_picker/file_picker.dart';
 import 'package:flutter/material.dart';
 import 'package:provider/provider.dart';
-import 'package:win_text_editor/app/providers/tab_provider.dart';
 import 'package:win_text_editor/app/providers/logger.dart';
 
 import '../models/file_node.dart';
 import '../providers/file_provider.dart';
+import '../providers/editor_provider.dart';
 
 import 'dart:math';
 
@@ -55,8 +57,11 @@ class _FileExplorerState extends State<FileExplorer> {
     final fileProvider = Provider.of<FileProvider>(context, listen: false);
     if (node.isDirectory) {
       await fileProvider.loadDirectoryContents(node);
+    } else {
+      // Handle file opening
+      print("No active tab found");
+      _openFileInEditor(context, node);
     }
-    // 单击文件节点时不处理
   }
 
   Future<void> _openFileInEditor(BuildContext context, FileNode node) async {