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 try:
  17     True
  18 except NameError:
  19     True = 1==1
  20     False = 1==0
  21
  22
  23 class App(wx.App):
  24     """PyCrust standalone application."""
  25
  26     def OnInit(self):
  27         import wx
  28         wx.InitAllImageHandlers()
  29         locals = __main__.__dict__
  30         from crust import CrustFrame
  31         self.frame = CrustFrame(locals=locals)
  32         self.frame.SetSize((800, 600))
  33         self.frame.Show()
  34         self.SetTopWindow(self.frame)
  35         return True
  36
  37 '''
  38 The main() function needs to handle being imported, such as with the
  39 pycrust script that wxPython installs:
  40
  41     #!/usr/bin/env python
  42
  43     from wx.py.PyCrust import main
  44     main()
  45 '''
  46
  47 def main():
  48     """The main function for the PyCrust program."""
  49     # Cleanup the main namespace, leaving the App class.
  50     import __main__
  51     md = __main__.__dict__
  52     keepers = original
  53     keepers.append('App')
  54     for key in md.keys():
  55         if key not in keepers:
  56             del md[key]
  57     # Create an application instance.
  58     app = App(0)
  59     # Mimic the contents of the standard Python shell's sys.path.
  60     import sys
  61     if sys.path[0]:
  62         sys.path[0] = ''
  63     # Add the application object to the sys module's namespace.
  64     # This allows a shell user to do:
  65     # >>> import sys
  66     # >>> sys.app.whatever
  67     sys.app = app
  68     del sys
  69     # Cleanup the main namespace some more.
  70     if md.has_key('App') and md['App'] is App:
  71         del md['App']
  72     if md.has_key('__main__') and md['__main__'] is __main__:
  73         del md['__main__']
  74     # Start the wxPython event loop.
  75     app.MainLoop()
  76
  77 if __name__ == '__main__':
  78     main()