wxPython/wx/py/PyCrust.py

   1 """PyCrust is a python shell and namespace browser application."""
   2
   3 # The next two lines, and the other code below that makes use of
   4 # ``__main__`` and ``original``, serve the purpose of cleaning up the
   5 # main namespace to look as much as possible like the regular Python
   6 # shell environment.
   7 import __main__
   8 original = __main__.__dict__.keys()
   9
  10 __author__ = "Patrick K. O'Brien <pobrien@orbtech.com>"
  11 __cvsid__ = "$Id$"
  12 __revision__ = "$Revision$"[11:-2]
  13
  14 import wx
  15
  16 class App(wx.App):
  17     """PyCrust standalone application."""
  18
  19     def OnInit(self):
  20         import wx
  21         from wx import py
  22         wx.InitAllImageHandlers()
  23         self.frame = py.crust.CrustFrame()
  24         self.frame.SetSize((800, 600))
  25         self.frame.Show()
  26         self.SetTopWindow(self.frame)
  27         return True
  28
  29 '''
  30 The main() function needs to handle being imported, such as with the
  31 pycrust script that wxPython installs:
  32
  33     #!/usr/bin/env python
  34
  35     from wx.py.PyCrust import main
  36     main()
  37 '''
  38
  39 def main():
  40     """The main function for the PyCrust program."""
  41     # Cleanup the main namespace, leaving the App class.
  42     import __main__
  43     md = __main__.__dict__
  44     keepers = original
  45     keepers.append('App')
  46     for key in md.keys():
  47         if key not in keepers:
  48             del md[key]
  49     # Create an application instance.
  50     app = App(0)
  51     # Mimic the contents of the standard Python shell's sys.path.
  52     import sys
  53     if sys.path[0]:
  54         sys.path[0] = ''
  55     # Add the application object to the sys module's namespace.
  56     # This allows a shell user to do:
  57     # >>> import sys
  58     # >>> sys.app.whatever
  59     sys.app = app
  60     del sys
  61     # Cleanup the main namespace some more.
  62     if md.has_key('App') and md['App'] is App:
  63         del md['App']
  64     if md.has_key('__main__') and md['__main__'] is __main__:
  65         del md['__main__']
  66     # Start the wxPython event loop.
  67     app.MainLoop()
  68
  69 if __name__ == '__main__':
  70     main()