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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 os

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import re

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from types import TupleType, StringType, UnicodeType

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import wx

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import wx.grid

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import wx.lib.buttons

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from plcopen.structures import LOCATIONDATATYPES, TestIdentifier, IEC_KEYWORDS

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from graphics.GraphicCommons import REFRESH_HIGHLIGHT_PERIOD, ERROR_HIGHLIGHT

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from dialogs.ArrayTypeDialog import ArrayTypeDialog

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from CustomGrid import CustomGrid

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from CustomTable import CustomTable

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from LocationCellEditor import LocationCellEditor

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from util.BitmapLibrary import GetBitmap

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from PLCControler import _VariableInfos

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#-------------------------------------------------------------------------------

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#                                 Helpers

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#-------------------------------------------------------------------------------

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def AppendMenu(parent, help, id, kind, text):

    47

    if wx.VERSION >= (2, 6, 0):

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        parent.Append(help=help, id=id, kind=kind, text=text)

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    else:

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        parent.Append(helpString=help, id=id, kind=kind, item=text)

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    52

[TITLE, EDITORTOOLBAR, FILEMENU, EDITMENU, DISPLAYMENU, PROJECTTREE, 

    53

 POUINSTANCEVARIABLESPANEL, LIBRARYTREE, SCALING, PAGETITLES

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] = range(10)

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    56

def GetVariableTableColnames(location):

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    _ = lambda x : x

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    if location:

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    	return ["#", _("Name"), _("Class"), _("Type"), _("Location"), _("Initial Value"), _("Option"), _("Documentation")]

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    return ["#", _("Name"), _("Class"), _("Type"), _("Initial Value"), _("Option"), _("Documentation")]

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def GetOptions(constant=True, retain=True, non_retain=True):

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    _ = lambda x : x

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    options = [""]

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    if constant:

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        options.append(_("Constant"))

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    if retain:

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        options.append(_("Retain"))

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    if non_retain:

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        options.append(_("Non-Retain"))

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    return options

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OPTIONS_DICT = dict([(_(option), option) for option in GetOptions()])

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    74

def GetFilterChoiceTransfer():

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    _ = lambda x : x

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    return {_("All"): _("All"), _("Interface"): _("Interface"), 

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            _("   Input"): _("Input"), _("   Output"): _("Output"), _("   InOut"): _("InOut"), 

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            _("   External"): _("External"), _("Variables"): _("Variables"), _("   Local"): _("Local"),

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            _("   Temp"): _("Temp"), _("Global"): _("Global")}#, _("Access") : _("Access")}

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VARIABLE_CHOICES_DICT = dict([(_(_class), _class) for _class in GetFilterChoiceTransfer().iterkeys()])

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VARIABLE_CLASSES_DICT = dict([(_(_class), _class) for _class in GetFilterChoiceTransfer().itervalues()])

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CheckOptionForClass = {"Local": lambda x: x,

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                       "Temp": lambda x: "",

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                       "Input": lambda x: {"Retain": "Retain", "Non-Retain": "Non-Retain"}.get(x, ""),

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                       "InOut": lambda x: "",

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                       "Output": lambda x: {"Retain": "Retain", "Non-Retain": "Non-Retain"}.get(x, ""),

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                       "Global": lambda x: {"Constant": "Constant", "Retain": "Retain"}.get(x, ""),

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                       "External": lambda x: {"Constant": "Constant"}.get(x, "")

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                      }

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LOCATION_MODEL = re.compile("((?:%[IQM](?:\*|(?:[XBWLD]?[0-9]+(?:\.[0-9]+)*)))?)$")

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VARIABLE_NAME_SUFFIX_MODEL = re.compile("([0-9]*)$")

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#-------------------------------------------------------------------------------

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#                            Variables Panel Table

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#-------------------------------------------------------------------------------

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class VariableTable(CustomTable):

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   101

    """

   102

    A custom wx.grid.Grid Table using user supplied data

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    """

   104

    def __init__(self, parent, data, colnames):

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        # The base class must be initialized *first*

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        CustomTable.__init__(self, parent, data, colnames)

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        self.old_value = None

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   109

    def GetValueByName(self, row, colname):

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        if row < self.GetNumberRows():

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            return getattr(self.data[row], colname)

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   113

    def SetValueByName(self, row, colname, value):

   114

        if row < self.GetNumberRows():

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            setattr(self.data[row], colname, value)

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   117

    def GetValue(self, row, col):

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        if row < self.GetNumberRows():

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            if col == 0:

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                return self.data[row].Number

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            colname = self.GetColLabelValue(col, False)

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            if colname == "Initial Value":

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                colname = "InitialValue"

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            value = getattr(self.data[row], colname, "")

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            if colname == "Type" and isinstance(value, TupleType):

   126

                if value[0] == "array":

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                    return "ARRAY [%s] OF %s" % (",".join(map(lambda x : "..".join(x), value[2])), value[1])

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            if not isinstance(value, (StringType, UnicodeType)):

   129

                value = str(value)

   130

            if colname in ["Class", "Option"]:

   131

                return _(value)

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            return value

   133

   134

    def SetValue(self, row, col, value):

   135

        if col < len(self.colnames):

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            colname = self.GetColLabelValue(col, False)

   137

            if colname == "Name":

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                self.old_value = getattr(self.data[row], colname)

   139

            elif colname == "Class":

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                value = VARIABLE_CLASSES_DICT[value]

   141

                self.SetValueByName(row, "Option", CheckOptionForClass[value](self.GetValueByName(row, "Option")))

   142

                if value == "External":

   143

                    self.SetValueByName(row, "InitialValue", "")

   144

            elif colname == "Option":

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                value = OPTIONS_DICT[value]

   146

            elif colname == "Initial Value":

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                colname = "InitialValue"

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            setattr(self.data[row], colname, value)

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   150

    def GetOldValue(self):

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        return self.old_value

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   153

    def _updateColAttrs(self, grid):

   154

        """

   155

        wx.grid.Grid -> update the column attributes to add the

   156

        appropriate renderer given the column name.

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   158

        Otherwise default to the default renderer.

   159

        """

   160

        for row in range(self.GetNumberRows()):

   161

            var_class = self.GetValueByName(row, "Class")

   162

            var_type = self.GetValueByName(row, "Type")

   163

            row_highlights = self.Highlights.get(row, {})

   164

            for col in range(self.GetNumberCols()):

   165

                editor = None

   166

                renderer = None

   167

                colname = self.GetColLabelValue(col, False)

   168

                if self.Parent.Debug:

   169

                    grid.SetReadOnly(row, col, True)

   170

                else:

   171

                    if colname == "Option":

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                        options = GetOptions(constant = var_class in ["Local", "External", "Global"],

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                                             retain = self.Parent.ElementType != "function" and var_class in ["Local", "Input", "Output", "Global"],

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                                             non_retain = self.Parent.ElementType != "function" and var_class in ["Local", "Input", "Output"])

   175

                        if len(options) > 1:

   176

                            editor = wx.grid.GridCellChoiceEditor()

   177

                            editor.SetParameters(",".join(map(_, options)))

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                        else:

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                            grid.SetReadOnly(row, col, True)

   180

                    elif col != 0 and self.GetValueByName(row, "Edit"):

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                        grid.SetReadOnly(row, col, False)

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                        if colname == "Name":

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                            editor = wx.grid.GridCellTextEditor()

   184

                            renderer = wx.grid.GridCellStringRenderer()

   185

                        elif colname == "Initial Value":

   186

                            if var_class not in ["External", "InOut"]:

   187

                                if self.Parent.Controler.IsEnumeratedType(var_type):

   188

                                    editor = wx.grid.GridCellChoiceEditor()

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                                    editor.SetParameters(",".join([""] + self.Parent.Controler.GetEnumeratedDataValues(var_type)))

   190

                                else:

   191

                                    editor = wx.grid.GridCellTextEditor()

   192

                                renderer = wx.grid.GridCellStringRenderer()

   193

                            else:

   194

                                grid.SetReadOnly(row, col, True)

   195

                        elif colname == "Location":

   196

                            if var_class in ["Local", "Global"] and self.Parent.Controler.IsLocatableType(var_type):

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                                editor = LocationCellEditor(self, self.Parent.Controler)

   198

                                renderer = wx.grid.GridCellStringRenderer()

   199

                            else:

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                                grid.SetReadOnly(row, col, True)

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                        elif colname == "Class":

   202

                            if len(self.Parent.ClassList) == 1:

   203

                                grid.SetReadOnly(row, col, True)

   204

                            else:

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                                editor = wx.grid.GridCellChoiceEditor()

   206

                                excluded = []

   207

                                if self.Parent.IsFunctionBlockType(var_type):

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                                    excluded.extend(["Local","Temp"])

   209

                                editor.SetParameters(",".join([_(choice) for choice in self.Parent.ClassList if choice not in excluded]))

   210

                    elif colname != "Documentation":

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                        grid.SetReadOnly(row, col, True)

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   213

                grid.SetCellEditor(row, col, editor)

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                grid.SetCellRenderer(row, col, renderer)

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   216

                if colname == "Location" and LOCATION_MODEL.match(self.GetValueByName(row, colname)) is None:

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                    highlight_colours = ERROR_HIGHLIGHT

   218

                else:

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                    highlight_colours = row_highlights.get(colname.lower(), [(wx.WHITE, wx.BLACK)])[-1]

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                grid.SetCellBackgroundColour(row, col, highlight_colours[0])

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                grid.SetCellTextColour(row, col, highlight_colours[1])

   222

            self.ResizeRow(grid, row)

   223

   224

#-------------------------------------------------------------------------------

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#                         Variable Panel Drop Target

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#-------------------------------------------------------------------------------   

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   228

class VariableDropTarget(wx.TextDropTarget):

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    '''

   230

    This allows dragging a variable location from somewhere to the Location

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    column of a variable row.

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   233

    The drag source should be a TextDataObject containing a Python tuple like:

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        ('%ID0.0.0', 'location', 'REAL')

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   236

    c_ext/CFileEditor.py has an example of this (you can drag a C extension

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    variable to the Location column of the variable panel).

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    '''

   239

    def __init__(self, parent):

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        wx.TextDropTarget.__init__(self)

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        self.ParentWindow = parent

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   243

    def OnDropText(self, x, y, data):

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        self.ParentWindow.ParentWindow.Select()

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        x, y = self.ParentWindow.VariablesGrid.CalcUnscrolledPosition(x, y)

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        col = self.ParentWindow.VariablesGrid.XToCol(x)

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        row = self.ParentWindow.VariablesGrid.YToRow(y - self.ParentWindow.VariablesGrid.GetColLabelSize())

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        message = None

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        element_type = self.ParentWindow.ElementType

   250

        try:

   251

            values = eval(data)    

   252

        except:

   253

            message = _("Invalid value \"%s\" for variable grid element")%data

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            values = None

   255

        if not isinstance(values, TupleType):

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            message = _("Invalid value \"%s\" for variable grid element")%data

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            values = None

   258

        if values is not None:

   259

            if col != wx.NOT_FOUND and row != wx.NOT_FOUND:

   260

                colname = self.ParentWindow.Table.GetColLabelValue(col, False)

   261

                if colname == "Location" and values[1] == "location":

   262

                    if not self.ParentWindow.Table.GetValueByName(row, "Edit"):

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                        message = _("Can't give a location to a function block instance")

   264

                    elif self.ParentWindow.Table.GetValueByName(row, "Class") not in ["Local", "Global"]:

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                        message = _("Can only give a location to local or global variables")

   266

                    else:

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                        location = values[0]

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                        variable_type = self.ParentWindow.Table.GetValueByName(row, "Type")

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                        base_type = self.ParentWindow.Controler.GetBaseType(variable_type)

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   271

                        if values[2] is not None:

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                            base_location_type = self.ParentWindow.Controler.GetBaseType(values[2])

   273

                            if values[2] != variable_type and base_type != base_location_type:

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                                message = _("Incompatible data types between \"%s\" and \"%s\"")%(values[2], variable_type)

   275

   276

                        if message is None:

   277

                            if not location.startswith("%"):

   278

                                if location[0].isdigit() and base_type != "BOOL":

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                                    message = _("Incompatible size of data between \"%s\" and \"BOOL\"")%location

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                                elif location[0] not in LOCATIONDATATYPES:

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                                    message = _("Unrecognized data size \"%s\"")%location[0]

   282

                                elif base_type not in LOCATIONDATATYPES[location[0]]:

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                                    message = _("Incompatible size of data between \"%s\" and \"%s\"")%(location, variable_type)

   284

                                else:

   285

                                    dialog = wx.SingleChoiceDialog(self.ParentWindow.ParentWindow.ParentWindow, 

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                                          _("Select a variable class:"), _("Variable class"), 

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                                          ["Input", "Output", "Memory"], 

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                                          wx.DEFAULT_DIALOG_STYLE|wx.OK|wx.CANCEL)

   289

                                    if dialog.ShowModal() == wx.ID_OK:

   290

                                        selected = dialog.GetSelection()

   291

                                    else:

   292

                                        selected = None

   293

                                    dialog.Destroy()

   294

                                    if selected is None:

   295

                                        return

   296

                                    if selected == 0:

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                                        location = "%I" + location

   298

                                    elif selected == 1:

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                                        location = "%Q" + location

   300

                                    else:

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                                        location = "%M" + location

   302

   303

                            if message is None:

   304

                                self.ParentWindow.Table.SetValue(row, col, location)

   305

                                self.ParentWindow.Table.ResetView(self.ParentWindow.VariablesGrid)

   306

                                self.ParentWindow.SaveValues()

   307

                elif colname == "Initial Value" and values[1] == "Constant":

   308

                    if not self.ParentWindow.Table.GetValueByName(row, "Edit"):

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                        message = _("Can't set an initial value to a function block instance")

   310

                    else:

   311

                        self.ParentWindow.Table.SetValue(row, col, values[0])

   312

                        self.ParentWindow.Table.ResetView(self.ParentWindow.VariablesGrid)

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                        self.ParentWindow.SaveValues()

   314

            elif (element_type not in ["config", "resource", "function"] and values[1] == "Global" and 

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                  self.ParentWindow.Filter in ["All", "Interface", "External"] or

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                  element_type != "function" and values[1] == "location"):

   317

                if values[1] == "location":

   318

                    var_name = values[3]

   319

                else:

   320

                    var_name = values[0]

   321

                tagname = self.ParentWindow.GetTagName()

   322

                if var_name.upper() in [name.upper() 

   323

                        for name in self.ParentWindow.Controler.\

   324

                            GetProjectPouNames(self.ParentWindow.Debug)]:

   325

                    message = _("\"%s\" pou already exists!")%var_name

   326

                elif not var_name.upper() in [name.upper() 

   327

                        for name in self.ParentWindow.Controler.\

   328

                            GetEditedElementVariables(tagname, self.ParentWindow.Debug)]:

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                    var_infos = self.ParentWindow.DefaultValue.copy()

   330

                    var_infos.Name = var_name

   331

                    var_infos.Type = values[2]

   332

                    if values[1] == "location":

   333

                        location = values[0]

   334

                        if not location.startswith("%"):

   335

                            dialog = wx.SingleChoiceDialog(self.ParentWindow.ParentWindow.ParentWindow, 

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                                  _("Select a variable class:"), _("Variable class"), 

   337

                                  ["Input", "Output", "Memory"], 

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                                  wx.DEFAULT_DIALOG_STYLE|wx.OK|wx.CANCEL)

   339

                            if dialog.ShowModal() == wx.ID_OK:

   340

                                selected = dialog.GetSelection()

   341

                            else:

   342

                                selected = None

   343

                            dialog.Destroy()

   344

                            if selected is None:

   345

                                return

   346

                            if selected == 0:

   347

                                location = "%I" + location

   348

                            elif selected == 1:

   349

                                location = "%Q" + location

   350

                            else:

   351

                                location = "%M" + location

   352

                        if element_type == "functionBlock":

   353

                            configs = self.ParentWindow.Controler.GetProjectConfigNames(

   354

                                                                self.ParentWindow.Debug)

   355

                            if len(configs) == 0:

   356

                                return

   357

                            if not var_name.upper() in [name.upper() 

   358

                                for name in self.ParentWindow.Controler.\

   359

                                    GetConfigurationVariableNames(configs[0])]:

   360

                                self.ParentWindow.Controler.AddConfigurationGlobalVar(

   361

                                    configs[0], values[2], var_name, location, "")

   362

                            var_infos.Class = "External"

   363

                        else:

   364

                            if element_type == "program":

   365

                                var_infos.Class = "Local"

   366

                            else:

   367

                                var_infos.Class = "Global"

   368

                            var_infos.Location = location

   369

                    else:

   370

                        var_infos.Class = "External"

   371

                    var_infos.Number = len(self.ParentWindow.Values)

   372

                    self.ParentWindow.Values.append(var_infos)

   373

                    self.ParentWindow.SaveValues()

   374

                    self.ParentWindow.RefreshValues()

   375

   376

        if message is not None:

   377

            wx.CallAfter(self.ShowMessage, message)

   378

   379

    def ShowMessage(self, message):

   380

        message = wx.MessageDialog(self.ParentWindow, message, _("Error"), wx.OK|wx.ICON_ERROR)

   381

        message.ShowModal()

   382

        message.Destroy()

   383

   384

#-------------------------------------------------------------------------------

   385

#                               Variable Panel

   386

#-------------------------------------------------------------------------------   

   387

   388

class VariablePanel(wx.Panel):

   389

   390

    def __init__(self, parent, window, controler, element_type, debug=False):

   391

        wx.Panel.__init__(self, parent, style=wx.TAB_TRAVERSAL)

   392

   393

        self.MainSizer = wx.FlexGridSizer(cols=1, hgap=10, rows=2, vgap=0)

   394

        self.MainSizer.AddGrowableCol(0)

   395

        self.MainSizer.AddGrowableRow(1)

   396

   397

        controls_sizer = wx.FlexGridSizer(cols=10, hgap=5, rows=1, vgap=5)

   398

        controls_sizer.AddGrowableCol(5)

   399

        controls_sizer.AddGrowableRow(0)

   400

        self.MainSizer.AddSizer(controls_sizer, border=5, flag=wx.GROW|wx.ALL)

   401

   402

        self.ReturnTypeLabel = wx.StaticText(self, label=_('Return Type:'))

   403

        controls_sizer.AddWindow(self.ReturnTypeLabel, flag=wx.ALIGN_CENTER_VERTICAL)

   404

   405

        self.ReturnType = wx.ComboBox(self,

   406

              size=wx.Size(145, -1), style=wx.CB_READONLY)

   407

        self.Bind(wx.EVT_COMBOBOX, self.OnReturnTypeChanged, self.ReturnType)

   408

        controls_sizer.AddWindow(self.ReturnType)

   409

   410

        self.DescriptionLabel = wx.StaticText(self, label=_('Description:'))

   411

        controls_sizer.AddWindow(self.DescriptionLabel, flag=wx.ALIGN_CENTER_VERTICAL)

   412

   413

        self.Description = wx.TextCtrl(self,

   414

              size=wx.Size(250, -1), style=wx.TE_PROCESS_ENTER)

   415

        self.Bind(wx.EVT_TEXT_ENTER, self.OnDescriptionChanged, self.Description)

   416

        self.Description.Bind(wx.EVT_KILL_FOCUS, self.OnDescriptionChanged)

   417

        controls_sizer.AddWindow(self.Description) 

   418

   419

        class_filter_label = wx.StaticText(self, label=_('Class Filter:'))

   420

        controls_sizer.AddWindow(class_filter_label, flag=wx.ALIGN_CENTER_VERTICAL)

   421

   422

        self.ClassFilter = wx.ComboBox(self, 

   423

              size=wx.Size(145, -1), style=wx.CB_READONLY)

   424

        self.Bind(wx.EVT_COMBOBOX, self.OnClassFilter, self.ClassFilter)

   425

        controls_sizer.AddWindow(self.ClassFilter)

   426

   427

        for name, bitmap, help in [

   428

                ("AddButton", "add_element", _("Add variable")),

   429

                ("DeleteButton", "remove_element", _("Remove variable")),

   430

                ("UpButton", "up", _("Move variable up")),

   431

                ("DownButton", "down", _("Move variable down"))]:

   432

            button = wx.lib.buttons.GenBitmapButton(self, bitmap=GetBitmap(bitmap), 

   433

                  size=wx.Size(28, 28), style=wx.NO_BORDER)

   434

            button.SetToolTipString(help)

   435

            setattr(self, name, button)

   436

            controls_sizer.AddWindow(button)

   437

   438

        self.VariablesGrid = CustomGrid(self, style=wx.VSCROLL)

   439

        self.VariablesGrid.SetDropTarget(VariableDropTarget(self))

   440

        self.VariablesGrid.Bind(wx.grid.EVT_GRID_CELL_CHANGE, 

   441

              self.OnVariablesGridCellChange)

   442

        self.VariablesGrid.Bind(wx.grid.EVT_GRID_CELL_LEFT_CLICK, 

   443

              self.OnVariablesGridCellLeftClick)

   444

        self.VariablesGrid.Bind(wx.grid.EVT_GRID_EDITOR_SHOWN, 

   445

              self.OnVariablesGridEditorShown)

   446

        self.MainSizer.AddWindow(self.VariablesGrid, flag=wx.GROW)

   447

   448

        self.SetSizer(self.MainSizer)

   449

   450

        self.ParentWindow = window

   451

        self.Controler = controler

   452

        self.ElementType = element_type

   453

        self.Debug = debug

   454

   455

        self.RefreshHighlightsTimer = wx.Timer(self, -1)

   456

        self.Bind(wx.EVT_TIMER, self.OnRefreshHighlightsTimer, 

   457

              self.RefreshHighlightsTimer)

   458

   459

        self.Filter = "All"

   460

        self.FilterChoices = []

   461

        self.FilterChoiceTransfer = GetFilterChoiceTransfer()

   462

   463

        self.DefaultValue = _VariableInfos("", "", "", "", "", True, "", "INT", ([], []), 0)

   464

   465

        if element_type in ["config", "resource"]:

   466

            self.DefaultTypes = {"All" : "Global"}

   467

        else:

   468

            self.DefaultTypes = {"All" : "Local", "Interface" : "Input", "Variables" : "Local"}

   469

   470

        if element_type in ["config", "resource"] \

   471

        or element_type in ["program", "transition", "action"]:

   472

            # this is an element that can have located variables

   473

            self.Table = VariableTable(self, [], GetVariableTableColnames(True))

   474

   475

            if element_type in ["config", "resource"]:

   476

                self.FilterChoices = ["All", "Global"]#,"Access"]

   477

            else:

   478

                self.FilterChoices = ["All",

   479

                                        "Interface", "   Input", "   Output", "   InOut", "   External",

   480

                                        "Variables", "   Local", "   Temp"]#,"Access"]

   481

   482

            # these condense the ColAlignements list

   483

            l = wx.ALIGN_LEFT

   484

            c = wx.ALIGN_CENTER 

   485

   486

            #                      Num  Name    Class   Type    Loc     Init    Option   Doc

   487

            self.ColSizes       = [40,  80,     70,     80,     80,     80,     100,     80]

   488

            self.ColAlignements = [c,   l,      l,      l,      l,      l,      l,       l]

   489

   490

        else:

   491

            # this is an element that cannot have located variables

   492

            self.Table = VariableTable(self, [], GetVariableTableColnames(False))

   493

   494

            if element_type == "function":

   495

                self.FilterChoices = ["All",

   496

                                        "Interface", "   Input", "   Output", "   InOut",

   497

                                        "Variables", "   Local"]

   498

            else:

   499

                self.FilterChoices = ["All",

   500

                                        "Interface", "   Input", "   Output", "   InOut", "   External",

   501

                                        "Variables", "   Local", "   Temp"]

   502

   503

            # these condense the ColAlignements list

   504

            l = wx.ALIGN_LEFT

   505

            c = wx.ALIGN_CENTER 

   506

   507

            #                      Num  Name    Class   Type    Init    Option   Doc

   508

            self.ColSizes       = [40,  80,     70,     80,     80,     100,     160]

   509

            self.ColAlignements = [c,   l,      l,      l,      l,      l,       l]

   510

   511

        self.ElementType = element_type

   512

        self.BodyType = None

   513

   514

        for choice in self.FilterChoices:

   515

            self.ClassFilter.Append(_(choice))

   516

   517

        reverse_transfer = {}

   518

        for filter, choice in self.FilterChoiceTransfer.items():