menu: refactor adding items to menu so they can be dynamically added/rmeoved.

panels/main_menu.py

@@ -16,7 +16,11 @@ class MainPanel(MenuPanel):
 
     def initialize(self, panel_name, items, extrudercount):
         print("### Making MainMenu")
+
+        self.layout = Gtk.Layout()
+        self.layout.set_size(self._screen.width, self._screen.height)
         grid = KlippyGtk.HomogeneousGrid()
+        grid.set_size_request(self._screen.width, self._screen.height)
 
         # Create Extruders and bed icons
         eq_grid = KlippyGtk.HomogeneousGrid()
@@ -36,6 +40,14 @@ class MainPanel(MenuPanel):
         eq_grid.attach(self.labels['heater_bed'], 0, i/2+1, width, 1)
 
         grid.attach(eq_grid, 0, 0, 1, 1)
+
+        self.items = items
+        self.create_menu_items()
+
+        self.grid = Gtk.Grid()
+        self.grid.set_row_homogeneous(True)
+        self.grid.set_column_homogeneous(True)
+
         grid.attach(self.arrangeMenuItems(items, 2, True), 1, 0, 1, 1)
         self.grid = grid
 
@@ -43,11 +55,12 @@ class MainPanel(MenuPanel):
             "heater_bed": 0,
             "extruder": 0
         }
+        self.layout.put(grid, 0, 0)
 
         self._screen.add_subscription(panel_name)
 
-    def get(self):
-        return self.grid
+    def activate(self):
+        return
 
     def update_temp(self, dev, temp, target):
         if dev in self.labels: