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GUI Collector - Validator Library

/ Published in: Python
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  1. import wx
  2. import string
  3.  
  4. class HostValidator(wx.PyValidator):
  5.     def __init__(self, pyVar=None):
  6.         wx.PyValidator.__init__(self)
  7.         self.Bind(wx.EVT_CHAR, self.OnChar)
  8.  
  9.     def Clone(self):
  10.         """ Standard cloner.
  11.  
  12.             Note that every validator must implement the Clone() method.
  13.         """
  14.         return HostValidator()
  15.  
  16.     def Validate(self, win):
  17.         tc = self.GetWindow() # tc == TextCtrl
  18.         val = tc.GetValue()
  19.         for x in val:
  20.             if x not in string.digits and x not in ".:":
  21.                 return False
  22.         return True
  23.  
  24.     def OnChar(self, event):
  25.         key = event.GetKeyCode()
  26.         if key < wx.WXK_SPACE or key == wx.WXK_DELETE or key > 255:
  27.             event.Skip()
  28.             return
  29.         if chr(key) in string.digits:
  30.             event.Skip()
  31.             return
  32.         if chr(key) in ".:":
  33.             event.Skip()
  34.             return
  35.         if not wx.Validator_IsSilent():
  36.             wx.Bell()
  37.         # Returning without calling even.Skip eats the event before it
  38.         # gets to the text control
  39.         return

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