add

lib/pages/book_detail/controller.dart

@@ -75,6 +75,63 @@ class BookDetailController extends GetxController with GetSingleTickerProviderSt
     }
   }
 
+  void testWriteCurrentReadChapterIdToData(List<ChapterModel> data) {
+    for(ChapterModel cModel in data){
+      cModel.currentRead = false;
+      if(cModel.id == currentChapterId){
+        cModel.currentRead = true;
+        cModel.selected = true;
+      }
+      else{
+        testWriteCurrentReadChapterIdToData(cModel.children!);
+      }
+    }
+
+    ChapterModel? tModel = findChapterById(chapters, currentChapterId);
+    if(tModel == null){
+      updateParentsStatus(chapters, tModel!);
+    }
+
+  }
+
+  ChapterModel? findChapterById(List<ChapterModel> data,num id){
+    for (ChapterModel cModel in data){
+      if(cModel.id == id){
+        return cModel;
+      }
+      ChapterModel? tModel = findChapterById(cModel.children!, id);
+      if(tModel !=null){
+        return tModel;
+      }
+    }
+    return null;
+  }
+
+  void updateParentsStatus(List<ChapterModel> data, ChapterModel model) {
+    ChapterModel? parentNode = findParentNode(data, model);
+    while (parentNode != null) {
+      parentNode.selected = true;
+      parentNode = findParentNode(data, parentNode);
+    }
+  }
+
+  ChapterModel? findParentNode(List<ChapterModel> nodes, ChapterModel node) {
+    for (var n in nodes) {
+      for (var child in n.children!) {
+        if (child == node) {
+          return n;
+        }
+        var parent = findParentNode(child.children!, node);
+        if (parent != null) {
+          return parent;
+        }
+      }
+    }
+    return null;
+  }
+
+
+
   /// 写入特定数据
 
   void writeData(List<ChapterModel> listA, List<ChapterModel> listB){
@@ -95,6 +152,7 @@ class BookDetailController extends GetxController with GetSingleTickerProviderSt
 
     chapters = result;
     setCurrentReadChapterId();
+    // testWriteCurrentReadChapterIdToData(chapters)
     update();
   }