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