logic: Fixed code view single not cleared properly in some cases

src/lib_gui/qt/element/QtCodeNavigator.cpp

@@ -192,6 +192,12 @@ void QtCodeNavigator::addedFiles()
 	}
 }
 
+void QtCodeNavigator::clear()
+{
+	clearCodeSnippets();
+	clearCaches();
+}
+
 void QtCodeNavigator::clearCodeSnippets()
 {
 	m_list->clear();

src/lib_gui/qt/element/QtCodeNavigator.h

@@ -37,6 +37,7 @@ public:
 
 	void addedFiles();
 
+	void clear();
 	void clearCodeSnippets();
 	void clearCaches();
 

src/lib_gui/qt/view/QtCodeView.cpp

@@ -55,6 +55,18 @@ void QtCodeView::refreshView()
 }
 
 void QtCodeView::clear()
+{
+	m_onQtThread(
+		[=]()
+		{
+			m_widget->clear();
+		}
+	);
+
+	m_errorInfos.clear();
+}
+
+void QtCodeView::clearCodeSnippets()
 {
 	m_onQtThread(
 		[=]()

src/lib_gui/qt/view/QtCodeView.h

@@ -27,6 +27,7 @@ public:
 
 	// CodeView implementation
 	virtual void clear();
+	virtual void clearCodeSnippets();
 
 	virtual void setErrorInfos(const std::vector<ErrorInfo>& errorInfos);
 	virtual bool showsErrors() const;