IpAddrCtrl is broken on GTK

Question

I have an IpAddrCtrl element from wx.lib.masked in my simple test:

import wx
import wx.lib.masked as masked

class MainWindow(wx.Frame):
    def __init__(self, parent, title):
        wx.Frame.__init__(self, parent, title=title, size=(500,500))

        self.ipaddr1 = masked.IpAddrCtrl(self, -1, style=wx.TE_PROCESS_TAB)

        self.grid_ip = wx.FlexGridSizer(cols=2, vgap=10, hgap=10)
        self.grid_ip.Add(self.ipaddr1, 0, wx.ALIGN_LEFT)    
        self.sizer = wx.BoxSizer(wx.VERTICAL)
        self.sizer.Add(self.grid_ip, 0, wx.ALIGN_LEFT | wx.ALL, border=5)
        self.SetSizer(self.sizer)    
        self.Bind(wx.EVT_TEXT, self.OnIpAddrChange, id=self.ipaddr1.GetId())    
        self.Show(True)

    def OnIpAddrChange(self, event):
        print(self.ipaddr1.GetAddress())
        print(self.ipaddr1.IsValid())

if __name__ == '__main__':
    app = wx.App(False)
    frame = MainWindow(None, "IpAddrCtrl sample")
    app.MainLoop()

After application starts, I try to insert correct numeric values in my IpAddrCtrl element, but it falls with following log:

<BaseMaskedTextCtrl: .   .   .   >
False
Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/wx-3.0-gtk2/wx/lib/masked/maskededit.py", line 3016, in _OnChar
    keep_processing = self._keyhandlers[key](event)
  File "/usr/lib/python2.7/dist-packages/wx-3.0-gtk2/wx/lib/masked/maskededit.py", line 3937, in _OnChangeField
    self._AdjustField( pos )
  File "/usr/lib/python2.7/dist-packages/wx-3.0-gtk2/wx/lib/masked/maskededit.py", line 4291, in _AdjustField
    newfield = field._AdjustField(slice)
  File "/usr/lib/python2.7/dist-packages/wx-3.0-gtk2/wx/lib/masked/maskededit.py", line 1649, in _AdjustField
    intStr = str(long(intStr))
ValueError: invalid literal for long() with base 10: '.'

Here a screencast how does it actually works.

Similar demo from wxPython project causes same problems for me.

My environment: Debian Stretch with Python 2.7.13, wxPython 3.0.2 and GTK2 2.24.31-2 from official stable repositories.

Any advices? Thanks for the help!

Update: I try to use same sample on Win32 platform and there are no any problems with IpAddrCtrl. After some debugging I found out that the difference in GTK/Win versions in additional EVT_TEXT event call that occurs in IpAddrCtrl when I try to edit selected text region. That causes unnecessary _OnTextChange event handler call, that brokes input. That strange behavior described on wxPython wiki and commented in a sources of base class for IpAddrCtrl, but currently a have no idea how to fix it.

Not sure why you need `ipaddr = self.FindWindowById(event.GetId())` — macroland, Dec 01 '17 at 03:56

score 0 · Answer 1 · answered Dec 01 '17 at 09:54

0

It's a horrible control, which as far as I can tell, simply doesn't function intuitively at all.
You have to press back space,to clear the field, as you enter each segment of the ip address or it gets itself in a complete tizzy.
Replace your lines

ipaddr = self.FindWindowById(event.GetId())
print ipaddr
print ipaddr.IsValid()

with

print (self.ipaddr1.GetAddress())
print (self.ipaddr1.IsValid())

Clearly, it's a function that needs work, as it is broken in wxpython 4 as well.

answered Dec 01 '17 at 09:54

Rolf of Saxony

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Thank for your reply. Sure, these lines from wx demo can be safely replaced. Looks like I found what brokes `IpAddrCtrl`, updated in OP post. – jubnzv Dec 02 '17 at 15:46

IpAddrCtrl is broken on GTK

1 Answers1