Added systemLayersKeys list

direct/src/leveleditor/LayerEditorUI.py

@@ -17,6 +17,7 @@ class LayerEditorUI(wx.Panel):
         self.saveData = []
         self.layersDataDict = dict()
         self.layersDataDictNextKey = 0
+        self.systemLayerKeys = []
         self.llist = wx.ListCtrl(self, -1, style=wx.LC_REPORT|wx.LC_EDIT_LABELS|wx.LC_NO_HEADER)
         self.llist.InsertColumn(0, "Layers")
 
@@ -60,8 +61,11 @@ class LayerEditorUI(wx.Panel):
             menuItem = self.popupmenu.Append(-1, item)
             self.Bind(wx.EVT_MENU, self.onPopupItemSelected, menuItem)
 
-    def menuAppendObjItems(self):
+    def menuAppendObjItems(self, hitItem):
         for item in self.menuItemsObj:
+            if hitItem in self.systemLayerKeys:
+                if item in [self.opRemoveObj, self.opDelete, self.opAddObj]:
+                    continue
             menuItem = self.popupmenu.Append(-1, item)
             self.Bind(wx.EVT_MENU, self.onPopupItemSelected, menuItem)
 
@@ -77,7 +81,7 @@ class LayerEditorUI(wx.Panel):
         if hitItem == -1:
            self.menuAppendGenItems()
         else:
-           self.menuAppendObjItems()
+           self.menuAppendObjItems(hitItem)
         self.PopupMenu(self.popupmenu, pos)
 
     def onPopupItemSelected(self, event):
@@ -105,6 +109,7 @@ class LayerEditorUI(wx.Panel):
         self.layersDataDict.clear()
         self.layersDataDictNextKey = 0
         self.llist.DeleteAllItems()
+        self.systemLayerKeys = []
 
     def findLabel(self, text):
         found = False