add of saveAsFile function

mainwindow.h

@@ -35,6 +35,7 @@ public:
     void setPath(const QList<Path *> &newPath);
     Path *getCurrentPath() const;
     void setCurrentPath(Path *newCurrentPath);
+    void saveAsFile();
 
     int getIndexPath() const;
     void setIndexPath(int newIndexPath);
@@ -64,6 +65,8 @@ private slots:
 
     void on_validateBtn_clicked();
 
+    void on_actionSave_as_triggered();
+
 private:
     Ui::MainWindow *ui;
     QString currentFile;