dialogs/ForceVariableDialog.py
author Andrey Skvortsov <andrej.skvortzov@gmail.com>
Mon, 21 Aug 2017 21:55:18 +0300
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clean-up: fix PEP8 E265 block comment should start with '# '
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# -*- coding: utf-8 -*-
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# This file is part of Beremiz, a Integrated Development Environment for
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# programming IEC 61131-3 automates supporting plcopen standard and CanFestival.
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#
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# Copyright (C) 2007: Edouard TISSERANT and Laurent BESSARD
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#
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# See COPYING file for copyrights details.
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License
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# as published by the Free Software Foundation; either version 2
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# of the License, or (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
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import re
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import datetime
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import wx
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# -------------------------------------------------------------------------------
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#                                Helpers
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# -------------------------------------------------------------------------------
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LOCATIONDATATYPES = {"X": ["BOOL"],
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                     "B": ["SINT", "USINT", "BYTE", "STRING"],
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                     "W": ["INT", "UINT", "WORD", "WSTRING"],
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                     "D": ["DINT", "UDINT", "REAL", "DWORD"],
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                     "L": ["LINT", "ULINT", "LREAL", "LWORD"]}
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def gen_get_function(f):
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    def get_function(v):
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        try:
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            return f(v)
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        except Exception:
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            return None
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    return get_function
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def gen_get_string(delimiter):
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    STRING_MODEL = re.compile("%(delimiter)s([^%(delimiter)s]*)%(delimiter)s$" % {"delimiter": delimiter})
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    def get_string(v):
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        result = STRING_MODEL.match(v)
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        if result is not None:
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            return result.group(1)
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        return None
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    return get_string
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getinteger = gen_get_function(int)
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getfloat = gen_get_function(float)
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getstring = gen_get_string("'")
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getwstring = gen_get_string('"')
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SECOND = 1000000
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MINUTE = 60 * SECOND
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HOUR = 60 * MINUTE
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DAY = 24 * HOUR
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IEC_TIME_MODEL = re.compile("(?:(?:T|TIME)#)?(-)?(?:(%(float)s)D_?)?(?:(%(float)s)H_?)?(?:(%(float)s)M(?!S)_?)?(?:(%(float)s)S_?)?(?:(%(float)s)MS)?$" % {"float": "[0-9]+(?:\.[0-9]+)?"})
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IEC_DATE_MODEL = re.compile("(?:(?:D|DATE)#)?([0-9]{4})-([0-9]{2})-([0-9]{2})$")
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IEC_DATETIME_MODEL = re.compile("(?:(?:DT|DATE_AND_TIME)#)?([0-9]{4})-([0-9]{2})-([0-9]{2})-([0-9]{2}):([0-9]{2}):([0-9]{2}(?:\.[0-9]+)?)$")
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IEC_TIMEOFDAY_MODEL = re.compile("(?:(?:TOD|TIME_OF_DAY)#)?([0-9]{2}):([0-9]{2}):([0-9]{2}(?:\.[0-9]+)?)$")
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def gettime(v):
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    result = IEC_TIME_MODEL.match(v.upper())
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    if result is not None:
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        negative, days, hours, minutes, seconds, milliseconds = result.groups()
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        microseconds = 0
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        not_null = False
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        for value, factor in [(days, DAY),
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                              (hours, HOUR),
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                              (minutes, MINUTE),
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                              (seconds, SECOND),
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                              (milliseconds, 1000)]:
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            if value is not None:
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                microseconds += float(value) * factor
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                not_null = True
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        if not not_null:
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            return None
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        if negative is not None:
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            microseconds = -microseconds
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        return datetime.timedelta(microseconds=microseconds)
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    else:
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        return None
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def getdate(v):
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    result = IEC_DATE_MODEL.match(v.upper())
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    if result is not None:
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        year, month, day = result.groups()
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        try:
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            date = datetime.datetime(int(year), int(month), int(day))
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        except ValueError, e:
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            return None
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        base_date = datetime.datetime(1970, 1, 1)
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        return date - base_date
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    else:
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        return None
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def getdatetime(v):
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    result = IEC_DATETIME_MODEL.match(v.upper())
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    if result is not None:
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        year, month, day, hours, minutes, seconds = result.groups()
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        try:
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            date = datetime.datetime(int(year), int(month), int(day), int(hours), int(minutes), int(float(seconds)), int((float(seconds) * SECOND) % SECOND))
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        except ValueError, e:
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            return None
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        base_date = datetime.datetime(1970, 1, 1)
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        return date - base_date
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    else:
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        return None
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def gettimeofday(v):
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    result = IEC_TIMEOFDAY_MODEL.match(v.upper())
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    if result is not None:
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        hours, minutes, seconds = result.groups()
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        microseconds = 0
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        for value, factor in [(hours, HOUR),
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                              (minutes, MINUTE),
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                              (seconds, SECOND)]:
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            microseconds += float(value) * factor
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        return datetime.timedelta(microseconds=microseconds)
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    else:
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        return None
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GetTypeValue = {"BOOL": lambda x: {"TRUE": True, "FALSE": False, "0": False, "1": True}.get(x.upper(), None),
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                "SINT": getinteger,
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                "INT": getinteger,
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                "DINT": getinteger,
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                "LINT": getinteger,
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                "USINT": getinteger,
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                "UINT": getinteger,
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                "UDINT": getinteger,
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                "ULINT": getinteger,
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                "BYTE": getinteger,
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                "WORD": getinteger,
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                "DWORD": getinteger,
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                "LWORD": getinteger,
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                "REAL": getfloat,
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                "LREAL": getfloat,
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                "STRING": getstring,
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                "WSTRING": getwstring,
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                "TIME": gettime,
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                "DATE": getdate,
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                "DT": getdatetime,
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                "TOD": gettimeofday}
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# -------------------------------------------------------------------------------
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#                            Force Variable Dialog
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# -------------------------------------------------------------------------------
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class ForceVariableDialog(wx.TextEntryDialog):
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    def __init__(self, parent, iec_type, defaultValue=""):
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        wx.TextEntryDialog.__init__(
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            self, parent,
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            message=_("Forcing Variable Value"),
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            caption=_("Please enter value for a \"%s\" variable:") % iec_type,
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            defaultValue=defaultValue,
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            style=wx.OK | wx.CANCEL | wx.CENTRE, pos=wx.DefaultPosition)
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        self.IEC_Type = iec_type
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        self.Bind(wx.EVT_BUTTON, self.OnOK,
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                  self.GetSizer().GetItem(2).GetSizer().GetItem(1).
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                  GetSizer().GetAffirmativeButton())
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        self.ValueTextCtrl = self.GetSizer().GetItem(1).GetWindow()
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        if self.IEC_Type == "BOOL":
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            self.ToggleButton = wx.ToggleButton(self, label=_("Toggle value"))
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            value = GetTypeValue[self.IEC_Type](defaultValue)
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            if value is not None:
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                self.ToggleButton.SetValue(value)
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            border = self.GetSizer().GetItem(1).GetBorder()
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            self.GetSizer().Insert(before=2, item=self.ToggleButton,
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                                   border=border,
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                                   flag=wx.LEFT | wx.RIGHT | wx.EXPAND)
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            self.Bind(wx.EVT_TOGGLEBUTTON, self.ToggleBoolValue, self.ToggleButton)
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        self.Fit()
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    def ToggleBoolValue(self, event):
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        value = self.ToggleButton.GetValue()
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        self.ValueTextCtrl.SetValue(unicode(value))
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    def OnOK(self, event):
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        message = None
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        value = self.ValueTextCtrl.GetValue()
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        if value == "":
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            message = _("You must type a value!")
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        elif GetTypeValue[self.IEC_Type](value) is None:
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            message = _("Invalid value \"{a1}\" for \"{a2}\" variable!").format(a1=value, a2=self.IEC_Type)
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        if message is not None:
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            dialog = wx.MessageDialog(self, message, _("Error"), wx.OK | wx.ICON_ERROR)
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            dialog.ShowModal()
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            dialog.Destroy()
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        else:
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            self.EndModal(wx.ID_OK)
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        event.Skip()
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    def GetValue(self):
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        return GetTypeValue[self.IEC_Type](wx.TextEntryDialog.GetValue(self))