1from Cocoa import * 2 3from MyWindowController import * 4 5class AppDelegate (NSObject): 6 myWindowController = objc.ivar() 7 8 @objc.IBAction 9 def newDocument_(self, sender): 10 if self.myWindowController is None: 11 self.myWindowController = MyWindowController.alloc().initWithWindowNibName_("TestWindow") 12 13 self.myWindowController.showWindow_(self) 14 15 16 def applicationDidFinishLaunching_(self, notification): 17 self.newDocument_(self) 18 19 def validateMenuItem_(self, theMenuItem): 20 enable = self.respondsToSelector_(theMenuItem.action()) 21 22 # disable "New" if the window is already up 23 if theMenuItem.action() == 'newDocument:': 24 if self.myWindowController.window().isKeyWindow(): 25 enable = False 26 27 return enable 28