This is a feature of wxWidgets, and is not implemented in wxPython.
http://www.wxpython.org/docs/api/wx.TextValidator-class.html - not found
while:
http://docs.wxwidgets.org/trunk/classwx_text_validator.html
http://docs.wxwidgets.org/stable/wx_wxtextvalidator.html
There is a demo of the Validators in the wxPython demo:
import wx
class TextObjectValidator(wx.PyValidator):
""" This validator is used to ensure that the user has entered something
into the text object editor dialog's text field.
"""
def __init__(self):
""" Standard constructor.
"""
wx.PyValidator.__init__(self)
def Clone(self):
""" Standard cloner.
Note that every validator must implement the Clone() method.
"""
return TextObjectValidator()
def Validate(self, win):
""" Validate the contents of the given text control.
"""
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):
""" Transfer data from validator to window.
The default implementation returns False, indicating that an error
occurred. We simply return True, as we don't do any data transfer.
"""
return True # Prevent wxDialog from complaining.
def TransferFromWindow(self):
""" Transfer data from window to validator.
The default implementation returns False, indicating that an error
occurred. We simply return True, as we don't do any data transfer.
"""
return True # Prevent wxDialog from complaining.
#----------------------------------------------------------------------
class TestValidateDialog(wx.Dialog):
def __init__(self, parent):
wx.Dialog.__init__(self, parent, -1, "Validated Dialog")
self.SetAutoLayout(True)
VSPACE = 10
fgs = wx.FlexGridSizer(0, 2)
fgs.Add((1,1));
fgs.Add(wx.StaticText(self, -1,
"These controls must have text entered into them. Each
"
"one has a validator that is checked when the Okay
"
"button is clicked."))
fgs.Add((1,VSPACE)); fgs.Add((1,VSPACE))
label = wx.StaticText(self, -1, "First: ")
fgs.Add(label, 0, wx.ALIGN_RIGHT|wx.CENTER)
fgs.Add(wx.TextCtrl(self, -1, "", validator = TextObjectValidator()))
fgs.Add((1,VSPACE)); fgs.Add((1,VSPACE))
label = wx.StaticText(self, -1, "Second: ")
fgs.Add(label, 0, wx.ALIGN_RIGHT|wx.CENTER)
fgs.Add(wx.TextCtrl(self, -1, "", validator = TextObjectValidator()))
buttons = wx.StdDialogButtonSizer() #wx.BoxSizer(wx.HORIZONTAL)
b = wx.Button(self, wx.ID_OK, "OK")
b.SetDefault()
buttons.AddButton(b)
buttons.AddButton(wx.Button(self, wx.ID_CANCEL, "Cancel"))
buttons.Realize()
border = wx.BoxSizer(wx.VERTICAL)
border.Add(fgs, 1, wx.GROW|wx.ALL, 25)
border.Add(buttons)
self.SetSizer(border)
border.Fit(self)
self.Layout()
app = wx.App(redirect=False)
f = wx.Frame(parent=None)
f.Show()
dlg = TestValidateDialog(f)
dlg.ShowModal()
dlg.Destroy()
app.MainLoop()
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