""" Demonstrate DirBrowse Event Bug in wxPython/wxGTK 2.2.2 .

5.2.2001 Bernhard Reiter <bernhard@intevation.de>
"""
from wxPython.wx import *
from wxPython.lib.filebrowsebutton import DirBrowseButton

class wxFrame1(wxFrame):
    def __init__(self, parent): 
        wxFrame.__init__(self, size = wxSize(300, 30), id=-1,
            title = 'oh oh oh', parent = parent )

        self.dirBrowsePanel= DirBrowseButton( id=-1, parent=self, 
            size=wxSize(280,-1), changeCallback=self.OnDirChanged)

        self.testinstancevar = "Hula Hula"

#******************************************************************************
#* Event Handling
#*
    def OnDirChanged(self,evt):
        """ Handle changeCallback event from DirBrowseButton. 
        
        Also handle bug in DirBrowseButton in wxPython-2.2.2,
        that generates an event when the constructior is not completed.
        """
        # dirty check if the constructor was completed and we have
        # the instance variables ready
        if self.__dict__.has_key("testinstancevar"):
            d=evt.GetString()
            print "selected database: '%s'" % d 
            print "self.testinstancvar="+self.testinstancevar
        else:
            print "Bang, would not have been able to access",
            print "self.testinstancevar ..."



class MyApp(wxApp):
    def OnInit(self):
        self.main = wxFrame1(None)
        self.main.Show(true)
        self.SetTopWindow(self.main)
        return true

def main():
    application = MyApp(0)
    application.MainLoop()

if __name__ == '__main__':
    main()