warning popup when export format for geometry reach is not .st

src/View/Geometry/Window.py

@@ -691,7 +691,13 @@ class GeometryWindow(PamhyrWindow):
                 if suffix == ".st" or suffix == ".ST":
                     self._export_to_file_st(filename[:-3])
                 else:
-                    # TODO : prévenir l'utilisateur que le format n'est pas exportable
+                    # Warning popup when the format is not exportable
+                    win = QtWidgets.QMessageBox()
+                    win.setIcon(QtWidgets.QMessageBox.Warning)
+                    win.setWindowTitle(self._trad["warning"])
+                    win.setText(self._trad["format_not_exportable"])
+                    win.exec()
+                    
                     pass
             else:
                 self._export_to_file_st(filename)