[wxPython] Validator for TxtCtrl to trigger with a custom Button handler

[Lo?c Mah?]

Hello

I try to use a Validator for a TxtCtrl placed in a Panel with a Button
in order to trigger the Validator and test the content of TxtCtrl.

I have looked into wxPython documentation and demo and searched in
google, but I am still unsuccessful yet.

My problem is that I do not manage to call the Validate() method of my
Validator from the button handler.

When I try to run my program I always have the following error:
AttributeError: 'Frame' object has no attribute 'Validate'

This error occurs when I call the Validate method inside my OnSave
button handler.

I tried to call the Validate method on different parents objects of
the
button and text control without success.

Thanks for you help!

Loïc


Here is the code:


#!/usr/bin/env python

import wx

class TextObjectValidator(wx.PyValidator):
     def __init__(self):
         print "init"
         wx.PyValidator.__init__(self)

     def Clone(self):
         print "Clone"
         return TextObjectValidator()

     def Validate(self, win):
         print "Validate"
         textCtrl = self.GetWindow()
         text = textCtrl.GetValue()
         if len(text) == 0:
             wx.MessageBox("A text object must contain some text!",
"Error")
             textCtrl.SetBackgroundColour("pink")
             textCtrl.SetFocus()
             textCtrl.Refresh()
             return False
         else:
             textCtrl.SetBackgroundColour(
                 wx.SystemSettings_GetColour(wx.SYS_COLOUR_WINDOW))
             textCtrl.Refresh()
             return True

     def TransferToWindow(self):
         print "TransferToWindow"
         return True # Prevent wxDialog from complaining.

     def TransferFromWindow(self):
         print "TransferFromWindow"
         return True # Prevent wxDialog from complaining.


class Frame(wx.Frame):

    def __init__(self, parent=None, id=-1, title='<Title here>',
                 pos=wx.DefaultPosition, size=(400, 200)):
        wx.Frame.__init__(self, parent, id, title, pos, size)
        self.CenterOnScreen()

        panel = wx.Panel(self, -1)
        panel.SetBackgroundColour(wx.Colour(255, 255, 255))

        fgs = wx.FlexGridSizer(cols=2, vgap=4, hgap=4)

        self.label = wx.StaticText(panel, -1, 'word'+":")
        self.tc = wx.TextCtrl(panel, -1, 'word', size=(50,-1),
validator=TextObjectValidator() )
        fgs.Add(self.label, 1, flag=wx.ALIGN_RIGHT |
wx.ALIGN_CENTER_VERTICAL)
        fgs.Add(self.tc, 1, flag=wx.EXPAND|wx.RIGHT, border=25)

	b = wx.Button(panel, 2000, "Save"  )
	fgs.Add(b, 1, flag=wx.EXPAND | wx.RIGHT)
	wx.EVT_BUTTON(panel, b.GetId(), self.OnSave)

        panel.InitDialog()
        panel.SetSizer( fgs )
        panel.SetAutoLayout(1)

    def OnSave(self, event):
        print "OnSave"
### ERROR BELOW:
        if self.Validate():
            print "Validate OK"
        else:
            print "Validate KO"
        pass


class App(wx.App):

    def OnInit(self):
        self.frame = Frame()
        self.frame.Show()
        self.SetTopWindow(self.frame)
        return True


def main():
    app = App()
    app.MainLoop()


if __name__ == '__main__':
    main()