possibly fix a few causes of the disappearing window bug

main.py

@@ -327,6 +327,10 @@ class AppletListing(Gtk.Window):

                                
                                
                                
                            
                                
                                    
                                        
                                            327  
                                                def drop_applet(self, drop_target: Gtk.DropTarget, value: int, x: float, y: float):
                                        
                                        
                                            
                                            
                                            
                                            
                                        
                                    
                                
                                
                                
                            
                                
                                    
                                        
                                            328  
                                                    # Applet deletion
                                        
                                        
                                            
                                            
                                            
                                            
                                        
                                    
                                
                                
                                
                            
                                
                                    
                                        
                                            329  
                                                    applet = self.get_root().get_application().drags[value]
                                        
                                        
                                            
                                            
                                            
                                            
                                        
                                    
                                
                                
                                
                            
                                
                                    
                                        330 +
                                        
                                        
                                        
                                        
                                    
                                
                                
                                
                            
                                
                                    
                                        331 +
                                                if not isinstance(applet, panorama_panel.Applet):
                                        
                                        
                                        
                                    
                                
                                
                                
                            
                                
                                    
                                        332 +
                                                    return False
                                        
                                        
                                        
                                    
                                
                                
                                
                            
                                
                                    
                                        333 +
                                        
                                        
                                        
                                        
                                    
                                
                                
                                
                            
                                
                                    
                                        
                                            334  
                                                    old_area: AppletArea = applet.get_parent()
                                        
                                        
                                            
                                            
                                            
                                            
                                        
                                    
                                
                                
                                
                            
                                
                                    
                                        
                                            335  
                                                    if old_area:
                                        
                                        
                                            
                                            
                                            
                                            
                                        
                                    
                                
                                
                                
                            
                                
                                    
                                        
                                            336  
                                                        old_area.remove(applet)
                                        
                                        
                                            
                                            
                                            
                                            
                                        
                                    
                                
                                
                                
                            
                                
                                    
                                        

@@ -370,8 +374,10 @@ class AppletArea(Gtk.Box):

                                
                                
                                
                            
                                
                                    
                                        
                                            374  
                                                        else:
                                        
                                        
                                            
                                            
                                            
                                            
                                        
                                    
                                
                                
                                
                            
                                
                                    
                                        
                                            375  
                                                            applet.restore_drag()
                                        
                                        
                                            
                                            
                                            
                                            
                                        
                                    
                                
                                
                                
                            
                                
                                    
                                        
                                            376  
                                                        applet.set_opacity(0.75 if value else 1)
                                        
                                        
                                            
                                            
                                            
                                            
                                        
                                    
                                
                                
                                
                            
                                
                                    
                                        373 -
                                                else:
                                        
                                        
                                        
                                    
                                
                                
                                
                            
                                
                                    
                                        377 +
                                                elif isinstance(obj, panorama_panel.Applet):
                                        
                                        
                                        
                                    
                                
                                
                                
                            
                                
                                    
                                        
                                            378  
                                                        applet = obj
                                        
                                        
                                            
                                            
                                            
                                            
                                        
                                    
                                
                                
                                
                            
                                
                                    
                                        379 +
                                                else:
                                        
                                        
                                        
                                    
                                
                                
                                
                            
                                
                                    
                                        380 +
                                                    return False
                                        
                                        
                                        
                                    
                                
                                
                                
                            
                                
                                    
                                        
                                            381  
                                                    old_area: AppletArea = applet.get_parent()
                                        
                                        
                                            
                                            
                                            
                                            
                                        
                                    
                                
                                
                                
                            
                                
                                    
                                        
                                            382  
                                                    if old_area:
                                        
                                        
                                            
                                            
                                            
                                            
                                        
                                    
                                
                                
                                
                            
                                
                                    
                                        
                                            383  
                                                        old_area.remove(applet)