稍微好一点了

win_text_editor/lib/modules/memory_table/controllers/memory_table_controller.dart

@@ -29,19 +29,20 @@ class Index {
 
 // 字段数据源
 class FieldsDataSource extends DataGridSource {
-  FieldsDataSource(this.fields);
+  FieldsDataSource(this.fields) {
+    _selectionNotifier = ValueNotifier<bool>(false);
+  }
 
   List<Field> fields;
+  late ValueNotifier<bool> _selectionNotifier;
+
+  ValueNotifier<bool> get selectionNotifier => _selectionNotifier;
 
-  void toggleAllSelection(bool? value) {
+  void toggleAllSelection(bool value) {
     for (var field in fields) {
-      field.isSelected = value ?? false;
+      field.isSelected = value;
-    }
-    notifyListeners();
     }
-
+    _selectionNotifier.value = !_selectionNotifier.value; // Trigger rebuild
-  void toggleRowSelection(int index, bool? value) {
-    fields[index].isSelected = value ?? false;
     notifyListeners();
   }
 
@@ -91,18 +92,29 @@ class FieldsDataSource extends DataGridSource {
           }).toList(),
     );
   }
+
+  void toggleRowSelection(int index, bool? value) {
+    fields[index].isSelected = value ?? false;
+    notifyListeners();
+  }
 }
 
 // 索引数据源
 class IndexesDataSource extends DataGridSource {
-  IndexesDataSource(this.indexes);
+  IndexesDataSource(this.indexes) {
+    _selectionNotifier = ValueNotifier<bool>(false);
+  }
 
   List<Index> indexes;
+  late ValueNotifier<bool> _selectionNotifier;
+
+  get selectionNotifier => _selectionNotifier;
 
-  void toggleAllSelection(bool? value) {
+  void toggleAllSelection(bool value) {
     for (var index in indexes) {
-      index.isSelected = value ?? false;
+      index.isSelected = value;
     }
+    _selectionNotifier.value = !_selectionNotifier.value; // Trigger rebuild
     notifyListeners();
   }
 

win_text_editor/lib/modules/memory_table/widgets/memory_table_left_side.dart

@@ -54,10 +54,15 @@ class MemoryTableLeftSide extends StatelessWidget {
                       columns: [
                         GridColumn(
                           columnName: 'select',
-                          label: _buildCheckboxHeader(
+                          label: ValueListenableBuilder<bool>(
+                            valueListenable: (fieldsSource).selectionNotifier,
+                            builder: (context, _, __) {
+                              return _buildCheckboxHeader(
                                 context,
                                 fieldsSource,
-                            controller.fieldsSource.rows.length,
+                                fieldsSource.fields.length,
+                              );
+                            },
                           ),
                           width: 60,
                         ),
@@ -111,13 +116,15 @@ class MemoryTableLeftSide extends StatelessWidget {
 
   Widget _buildCheckboxHeader(BuildContext context, FieldsDataSource dataSource, int rowCount) {
     final allSelected = rowCount > 0 && dataSource.fields.every((item) => item.isSelected);
+    final someSelected =
+        rowCount > 0 && dataSource.fields.any((item) => item.isSelected) && !allSelected;
 
     return Container(
       alignment: Alignment.center,
       color: Colors.grey[200],
       child: Checkbox(
         value: allSelected,
-        tristate: true,
+        tristate: someSelected,
         onChanged: (value) {
           dataSource.toggleAllSelection(value ?? false);
         },
@@ -147,10 +154,15 @@ class MemoryTableLeftSide extends StatelessWidget {
                       columns: [
                         GridColumn(
                           columnName: 'select',
-                          label: _buildCheckboxHeaderForIndexes(
+                          label: ValueListenableBuilder<bool>(
+                            valueListenable: (indexesSource).selectionNotifier,
+                            builder: (context, _, __) {
+                              return _buildCheckboxHeaderForIndexes(
                                 context,
                                 indexesSource,
-                            controller.indexesSource.rows.length,
+                                indexesSource.indexes.length,
+                              );
+                            },
                           ),
                           width: 60,
                         ),
@@ -203,13 +215,15 @@ class MemoryTableLeftSide extends StatelessWidget {
     int rowCount,
   ) {
     final allSelected = rowCount > 0 && dataSource.indexes.every((item) => item.isSelected);
+    final someSelected =
+        rowCount > 0 && dataSource.indexes.any((item) => item.isSelected) && !allSelected;
 
     return Container(
       alignment: Alignment.center,
       color: Colors.grey[200],
       child: Checkbox(
         value: allSelected,
-        tristate: true,
+        tristate: someSelected,
         onChanged: (value) {
           dataSource.toggleAllSelection(value ?? false);
         },