fix: tab close button does not work

tabwidget.cpp

@@ -140,12 +140,18 @@ void TabWidget::closeCurrentTab()
 
 bool TabWidget::closeTab(int index)
 {
+    qDebug() << "closeTab called with index:" << index << "count:" << count();
+    
     if (index < 0 || index >= count()) {
+        qDebug() << "Invalid index, returning false";
         return false;
     }
     
     int docId = m_tabToDocumentId.value(index, -1);
+    qDebug() << "Document ID for index" << index << "is" << docId;
+    
     if (docId == -1) {
+        qDebug() << "No document ID found for index, returning false";
         return false;
     }
     
@@ -185,29 +191,7 @@ bool TabWidget::closeTab(int index)
         }
     }
     
-    // 移除标签页
+    qDebug() << "Proceeding to close tab";
-    QWidget *widget = this->widget(index);
-    removeTab(index);
-    
-    // 清理映射关系
-    m_tabToDocumentId.remove(index);
-    m_documentIdToTab.remove(docId);
-    
-    // 更新其他标签页的索引映射
-    QHash<int, int> newTabToDocumentId;
-    QHash<int, int> newDocumentIdToTab;
-    
-    for (int i = 0; i < count(); ++i) {
-        int oldIndex = (i >= index) ? i + 1 : i;
-        int oldDocId = m_tabToDocumentId.value(oldIndex, -1);
-        if (oldDocId != -1) {
-            newTabToDocumentId[i] = oldDocId;
-            newDocumentIdToTab[oldDocId] = i;
-        }
-    }
-    
-    m_tabToDocumentId = newTabToDocumentId;
-    m_documentIdToTab = newDocumentIdToTab;
     
     // 清理编辑器和文档
     if (m_editors.contains(docId)) {
@@ -218,6 +202,36 @@ bool TabWidget::closeTab(int index)
     
     m_documentManager->closeDocument(docId);
     
+    // 移除标签页
+    QWidget *widget = this->widget(index);
+    removeTab(index);
+    
+    // 清理和更新映射关系
+    m_tabToDocumentId.remove(index);
+    m_documentIdToTab.remove(docId);
+    
+    // 更新后续标签页的索引映射（索引减1）
+    QHash<int, int> newTabToDocumentId;
+    QHash<int, int> newDocumentIdToTab;
+    
+    for (auto it = m_tabToDocumentId.begin(); it != m_tabToDocumentId.end(); ++it) {
+        int tabIndex = it.key();
+        int documentId = it.value();
+        
+        if (tabIndex > index) {
+            // 后续标签页的索引需要减1
+            newTabToDocumentId[tabIndex - 1] = documentId;
+            newDocumentIdToTab[documentId] = tabIndex - 1;
+        } else {
+            // 前面的标签页索引不变
+            newTabToDocumentId[tabIndex] = documentId;
+            newDocumentIdToTab[documentId] = tabIndex;
+        }
+    }
+    
+    m_tabToDocumentId = newTabToDocumentId;
+    m_documentIdToTab = newDocumentIdToTab;
+    
     if (widget) {
         widget->deleteLater();
     }
@@ -227,6 +241,7 @@ bool TabWidget::closeTab(int index)
         newDocument();
     }
     
+    qDebug() << "Tab closed successfully";
     return true;
 }
 
@@ -280,6 +295,7 @@ void TabWidget::onCurrentChanged(int index)
 
 void TabWidget::onTabCloseRequested(int index)
 {
+    qDebug() << "Tab close requested for index:" << index;
     closeTab(index);
 }
 

tabwidget.h

@@ -35,7 +35,6 @@ public:
 
 signals:
     void currentEditorChanged(SciEdit *editor);
-    void tabCloseRequested(int index);
 
 private slots:
     void onCurrentChanged(int index);