feat(StudyDetailPage): 添加目录弹框打开时自动滚动到当前课程功能

@@ -847,12 +847,40 @@ const endAction = (item) => {
 }
 
 /**
- * 新增记录
+ * 添加学习记录
  * @param paramsObj
  */
 const addRecord = async (paramsObj) => {
     await addStudyRecordAPI(paramsObj);
 }
+
+// 监听目录弹框显示状态，当打开时滚动到当前课程位置
+watch(showCatalog, (newVal) => {
+    if (newVal) {
+        // 等待DOM更新后执行滚动
+        nextTick(() => {
+            // 查找当前选中的课程元素
+            const selectedLesson = document.querySelector('.text-green-600')?.closest('.bg-white');
+            if (selectedLesson) {
+                // 获取滚动容器
+                const scrollContainer = document.querySelector('.van-popup .overflow-y-auto');
+                if (scrollContainer) {
+                    // 计算滚动位置，使选中元素位于容器中间
+                    const containerHeight = scrollContainer.clientHeight;
+                    const lessonTop = selectedLesson.offsetTop;
+                    const lessonHeight = selectedLesson.clientHeight;
+                    const scrollTop = lessonTop - (containerHeight / 2) + (lessonHeight / 2);
+                    
+                    // 平滑滚动到指定位置
+                    scrollContainer.scrollTo({
+                        top: scrollTop,
+                        behavior: 'smooth'
+                    });
+                }
+            }
+        });
+    }
+});
 </script>
 
 <style lang="less" scoped>