added window_mode argument to MDIArea constructor

grum/cli.py

@@ -32,7 +32,6 @@ def handle_clargs():
     return parser.parse_args().__dict__
 
 
-
 def unambiguous_window_mode(arg):
     cfarg = arg.casefold()
     values = MDIWindowMode.values()

grum/mainwin.py

@@ -38,8 +38,7 @@ class MainWindow(QMainWindow):
         self.menu_settings = menu = BarMenu(bar, "&Settings")
         menu.addCheckbox("Open new plots", state=True)
 
-        self.mdi = mdi = MDIArea(bar)
-        mdi.set_window_mode(window_mode)
+        self.mdi = mdi = MDIArea(bar, window_mode=window_mode)
 
         splitter = QSplitter(Qt.Horizontal)
         splitter.addWidget(lst)

grum/mdi/mdiarea.py

@@ -20,12 +20,13 @@ class MDIWindowMode(str, enum.Enum):
 
 class MDIArea(QMdiArea):
 
-    def __init__(self, bar, *args, **kwargs):
+    def __init__(self, bar, window_mode=MDIWindowMode.MULTI, *args, **kwargs):
         super().__init__(*args, **kwargs)
         self.logo = assets.logo()
         self.setTabsClosable(True)
         self.setTabsMovable(True)
         self._add_menu(bar)
+        self.set_window_mode(window_mode)
 
 
     def _add_menu(self, bar):