Add default values to callbacks

b_asic/GUI/drag_button.py

@@ -122,7 +122,7 @@ class DragButton(QPushButton):
         self._window.graphic_view.update()
         super().mouseReleaseEvent(event)
 
-    def _flip(self, event):
+    def _flip(self, event=None):
         self._flipped = not self._flipped
         for pb in self.ports:
             if isinstance(pb.port, InputPort):

b_asic/GUI/main_window.py

@@ -216,16 +216,14 @@ class MainWindow(QMainWindow):
 
         self.logger.info(f"Saved SFG to path: {module}.")
 
-    def save_work(self, arg):
-        print("Save: ", arg)
+    def save_work(self, event=None):
         self.sfg_widget = SelectSFGWindow(self)
         self.sfg_widget.show()
 
         # Wait for input to dialog.
         self.sfg_widget.ok.connect(self._save_work)
 
-    def load_work(self, arg):
-        print("Load: ", arg)
+    def load_work(self, event=None):
         module, accepted = QFileDialog().getOpenFileName()
         if not accepted:
             return