dialogs/FBDVariableDialog.py
author Laurent Bessard
Fri, 15 Mar 2013 00:01:36 +0100
changeset 983 7dd481eef3b5
parent 814 5743cbdff669
child 1182 208103fd9ad0
permissions -rw-r--r--
Replaced left ugly buttons in LogViewer by custom buttons inside MessagePanel
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#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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#This file is part of PLCOpenEditor, a library implementing an IEC 61131-3 editor
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#based on the plcopen standard. 
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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 library is free software; you can redistribute it and/or
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#modify it under the terms of the GNU General Public
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#License as published by the Free Software Foundation; either
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#version 2.1 of the License, or (at your option) any later version.
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#
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#This library 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 GNU
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#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
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#License along with this library; if not, write to the Free Software
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#Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
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import wx
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from graphics import *
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#-------------------------------------------------------------------------------
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#                                    Helpers
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#-------------------------------------------------------------------------------
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VARIABLE_CLASSES_DICT = {INPUT : _("Input"),
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                         INOUT : _("InOut"),
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                         OUTPUT : _("Output")}
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VARIABLE_CLASSES_DICT_REVERSE = dict(
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    [(value, key) for key, value in VARIABLE_CLASSES_DICT.iteritems()])
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#-------------------------------------------------------------------------------
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#                          Create New Variable Dialog
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#-------------------------------------------------------------------------------
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class FBDVariableDialog(wx.Dialog):
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    def __init__(self, parent, controller, transition = ""):
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        wx.Dialog.__init__(self, parent,
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              size=wx.Size(400, 380), title=_('Variable Properties'))
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        main_sizer = wx.FlexGridSizer(cols=1, hgap=0, rows=4, vgap=10)
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        main_sizer.AddGrowableCol(0)
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        main_sizer.AddGrowableRow(2)
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        column_sizer = wx.BoxSizer(wx.HORIZONTAL)
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        main_sizer.AddSizer(column_sizer, border=20, 
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              flag=wx.GROW|wx.TOP|wx.LEFT|wx.RIGHT)
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        left_gridsizer = wx.FlexGridSizer(cols=1, hgap=0, rows=6, vgap=5)
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        left_gridsizer.AddGrowableCol(0)
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        column_sizer.AddSizer(left_gridsizer, 1, border=5, 
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              flag=wx.GROW|wx.RIGHT)
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        class_label = wx.StaticText(self, label=_('Class:'))
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        left_gridsizer.AddWindow(class_label, flag=wx.GROW)
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        self.Class = wx.ComboBox(self, style=wx.CB_READONLY)
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        self.Bind(wx.EVT_COMBOBOX, self.OnClassChanged, self.Class)
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        left_gridsizer.AddWindow(self.Class, flag=wx.GROW)
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        expression_label = wx.StaticText(self, label=_('Expression:'))
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        left_gridsizer.AddWindow(expression_label, flag=wx.GROW)
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        self.Expression = wx.TextCtrl(self)
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        self.Bind(wx.EVT_TEXT, self.OnExpressionChanged, self.Expression)
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        left_gridsizer.AddWindow(self.Expression, flag=wx.GROW)
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        execution_order_label = wx.StaticText(self, label=_('Execution Order:'))
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        left_gridsizer.AddWindow(execution_order_label, flag=wx.GROW)
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        self.ExecutionOrder = wx.SpinCtrl(self, min=0, style=wx.SP_ARROW_KEYS)
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        self.Bind(wx.EVT_SPINCTRL, self.OnExecutionOrderChanged, self.ExecutionOrder)
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        left_gridsizer.AddWindow(self.ExecutionOrder, flag=wx.GROW)
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        right_gridsizer = wx.FlexGridSizer(cols=1, hgap=0, rows=2, vgap=5)
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        right_gridsizer.AddGrowableCol(0)
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        right_gridsizer.AddGrowableRow(1)
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        column_sizer.AddSizer(right_gridsizer, 1, border=5, 
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              flag=wx.GROW|wx.LEFT)
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        name_label = wx.StaticText(self, label=_('Name:'))
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        right_gridsizer.AddWindow(name_label, flag=wx.GROW)
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        self.VariableName = wx.ListBox(self, size=wx.Size(0, 0), 
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              style=wx.LB_SINGLE|wx.LB_SORT)
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        self.Bind(wx.EVT_LISTBOX, self.OnNameChanged, self.VariableName)
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        right_gridsizer.AddWindow(self.VariableName, flag=wx.GROW)
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        preview_label = wx.StaticText(self, label=_('Preview:'))
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        main_sizer.AddWindow(preview_label, border=20,
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              flag=wx.GROW|wx.LEFT|wx.RIGHT)
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        self.Preview = wx.Panel(self, 
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              style=wx.TAB_TRAVERSAL|wx.SIMPLE_BORDER)
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        self.Preview.SetBackgroundColour(wx.Colour(255,255,255))
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        setattr(self.Preview, "GetDrawingMode", lambda:FREEDRAWING_MODE)
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        setattr(self.Preview, "GetScaling", lambda:None)
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        setattr(self.Preview, "IsOfType", controller.IsOfType)
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        self.Preview.Bind(wx.EVT_PAINT, self.OnPaint)
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        main_sizer.AddWindow(self.Preview, border=20,
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              flag=wx.GROW|wx.LEFT|wx.RIGHT)
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        button_sizer = self.CreateButtonSizer(wx.OK|wx.CANCEL|wx.CENTRE)
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        self.Bind(wx.EVT_BUTTON, self.OnOK, button_sizer.GetAffirmativeButton())
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        main_sizer.AddSizer(button_sizer, border=20, 
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              flag=wx.ALIGN_RIGHT|wx.BOTTOM|wx.LEFT|wx.RIGHT)
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        self.SetSizer(main_sizer)
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        self.Transition = transition
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        self.Variable = None
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        self.VarList = []
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        self.MinVariableSize = None
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        for choice in VARIABLE_CLASSES_DICT.itervalues():
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            self.Class.Append(choice)
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        self.Class.SetStringSelection(VARIABLE_CLASSES_DICT[INPUT])
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        self.RefreshNameList()
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        self.Class.SetFocus()
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    def SetPreviewFont(self, font):
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        self.Preview.SetFont(font)
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    def RefreshNameList(self):
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        selected = self.VariableName.GetStringSelection()
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        var_class = VARIABLE_CLASSES_DICT_REVERSE[self.Class.GetStringSelection()]
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        self.VariableName.Clear()
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        self.VariableName.Append("")
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        for name, var_type, value_type in self.VarList:
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            if var_type != "Input" or var_class == INPUT:
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                self.VariableName.Append(name)
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        if selected != "" and self.VariableName.FindString(selected) != wx.NOT_FOUND:
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            self.VariableName.SetStringSelection(selected)
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            self.Expression.Enable(False)
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        else:
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            self.VariableName.SetStringSelection("")
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            #self.Expression.Enable(var_class == INPUT)
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        self.VariableName.Enable(self.VariableName.GetCount() > 0)
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    def SetMinVariableSize(self, size):
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        self.MinVariableSize = size
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    def SetVariables(self, vars):
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        self.VarList = vars
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        self.RefreshNameList()
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    def SetValues(self, values):
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        value_type = values.get("type", None)
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        value_name = values.get("name", None)
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        if value_type:
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            self.Class.SetStringSelection(VARIABLE_CLASSES_DICT[value_type])
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            self.RefreshNameList()
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        if value_name:
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            if self.VariableName.FindString(value_name) != wx.NOT_FOUND:
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                self.VariableName.SetStringSelection(value_name)
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                self.Expression.Enable(False)
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            else:
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                self.Expression.SetValue(value_name)
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                self.VariableName.Enable(False)
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        if "executionOrder" in values:
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            self.ExecutionOrder.SetValue(values["executionOrder"])
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        self.RefreshPreview()
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    def GetValues(self):
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        values = {}
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        values["type"] = VARIABLE_CLASSES_DICT_REVERSE[self.Class.GetStringSelection()]
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        expression = self.Expression.GetValue()
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        if self.Expression.IsEnabled() and expression != "":
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            values["name"] = expression
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        else:
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            values["name"] = self.VariableName.GetStringSelection()
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        values["value_type"] = None
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        for var_name, var_type, value_type in self.VarList:
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            if var_name == values["name"]:
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                values["value_type"] = value_type
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        values["width"], values["height"] = self.Variable.GetSize()
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        values["executionOrder"] = self.ExecutionOrder.GetValue()
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        return values
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    def OnOK(self, event):
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        message = None
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        expression = self.Expression.GetValue()
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        if self.Expression.IsEnabled():
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            value = expression
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        else:
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            value = self.VariableName.GetStringSelection()
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        if value == "":
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            message = _("At least a variable or an expression must be selected!")
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        elif value.upper() in IEC_KEYWORDS:
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            message = _("\"%s\" is a keyword. It can't be used!") % value
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        if message is not None:
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            message = wx.MessageDialog(self, message, _("Error"), wx.OK|wx.ICON_ERROR)
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            message.ShowModal()
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            message.Destroy()
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        else:
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            self.EndModal(wx.ID_OK)
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    def OnClassChanged(self, event):
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        self.RefreshNameList()
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        self.RefreshPreview()
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        event.Skip()
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    def OnNameChanged(self, event):
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        if self.VariableName.GetStringSelection() != "":
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            self.Expression.Enable(False)
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        elif VARIABLE_CLASSES_DICT_REVERSE[self.Class.GetStringSelection()] == INPUT:
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            self.Expression.Enable(True)
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        self.RefreshPreview()
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        event.Skip()
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    def OnExpressionChanged(self, event):
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        if self.Expression.GetValue() != "":
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            self.VariableName.Enable(False)
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        else:
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            self.VariableName.Enable(True)
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        self.RefreshPreview()
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        event.Skip()
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    def OnExecutionOrderChanged(self, event):
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        self.RefreshPreview()
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        event.Skip()
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    def RefreshPreview(self):
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        dc = wx.ClientDC(self.Preview)
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        dc.SetFont(self.Preview.GetFont())
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        dc.Clear()
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        expression = self.Expression.GetValue()
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        if self.Expression.IsEnabled() and expression != "":
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            name = expression
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        else:
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            name = self.VariableName.GetStringSelection()
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        type = ""
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        for var_name, var_type, value_type in self.VarList:
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            if var_name == name:
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                type = value_type
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        classtype = VARIABLE_CLASSES_DICT_REVERSE[self.Class.GetStringSelection()]
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        self.Variable = FBD_Variable(self.Preview, classtype, name, type, executionOrder = self.ExecutionOrder.GetValue())
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        width, height = self.MinVariableSize
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        min_width, min_height = self.Variable.GetMinSize()
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        width, height = max(min_width, width), max(min_height, height)
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        self.Variable.SetSize(width, height)
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        clientsize = self.Preview.GetClientSize()
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        x = (clientsize.width - width) / 2
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        y = (clientsize.height - height) / 2
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        self.Variable.SetPosition(x, y)
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        self.Variable.Draw(dc)
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    def OnPaint(self, event):
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        self.RefreshPreview()
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        event.Skip()