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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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from datetime import datetime

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import wx, wx.grid

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if wx.VERSION >= (2, 8, 0):

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    import wx.aui

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    USE_AUI = True

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else:

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    USE_AUI = False

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import os, re, platform, sys, time, traceback, getopt

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import cPickle

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CWD = os.path.split(os.path.realpath(__file__))[0]

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base_folder = os.path.split(CWD)[0]

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sys.path.append(base_folder)

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from docutils import *

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from types import TupleType

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__version__ = "$Revision: 1.130 $"

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if __name__ == '__main__':

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    # Usage message displayed when help request or when error detected in 

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    # command line

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    def usage():

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        print "\nUsage of PLCOpenEditor.py :"

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        print "\n   %s [Filepath]\n"%sys.argv[0]

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    # Parse options given to PLCOpenEditor in command line

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    try:

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        opts, args = getopt.getopt(sys.argv[1:], "h", ["help"])

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    except getopt.GetoptError:

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        # print help information and exit:

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        usage()

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        sys.exit(2)

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    # Extract if help has been requested

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    for o, a in opts:

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        if o in ("-h", "--help"):

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            usage()

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            sys.exit()

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    # Extract the optional filename to open

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    fileOpen = None

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    if len(args) > 1:

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        usage()

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        sys.exit()

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    elif len(args) == 1:

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        fileOpen = args[0]

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    # Create wxApp (Need to create App before internationalization because of

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    # Windows) 

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    app = wx.PySimpleApp()

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# Import module for internationalization

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import gettext

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import __builtin__

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# Get folder containing translation files

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localedir = os.path.join(CWD,"locale")

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# Get the default language

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langid = wx.LANGUAGE_DEFAULT

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# Define translation domain (name of translation files)

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domain = "PLCOpenEditor"

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# Define locale for wx

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loc = __builtin__.__dict__.get('loc', None)

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if loc is None:

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    test_loc = wx.Locale(langid)

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    test_loc.AddCatalogLookupPathPrefix(localedir)

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    if test_loc.AddCatalog(domain):

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        loc = wx.Locale(langid)

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    else:

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        loc = wx.Locale(wx.LANGUAGE_ENGLISH)

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    __builtin__.__dict__['loc'] = loc

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# Define location for searching translation files

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loc.AddCatalogLookupPathPrefix(localedir)

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# Define locale domain

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loc.AddCatalog(domain)

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if __name__ == '__main__':

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    __builtin__.__dict__['_'] = wx.GetTranslation

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from SFCViewer import *

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from LDViewer import *

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from Viewer import *

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from TextViewer import *

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from GraphicViewer import *

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from RessourceEditor import *

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from DataTypeEditor import *

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from PLCControler import *

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from SearchResultPanel import SearchResultPanel

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# Define PLCOpenEditor controls id

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[ID_PLCOPENEDITOR, ID_PLCOPENEDITORLEFTNOTEBOOK, 

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 ID_PLCOPENEDITORBOTTOMNOTEBOOK, ID_PLCOPENEDITORRIGHTNOTEBOOK, 

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 ID_PLCOPENEDITORTYPESTREE, ID_PLCOPENEDITORINSTANCESTREE, 

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 ID_PLCOPENEDITORMAINSPLITTER, ID_PLCOPENEDITORSECONDSPLITTER, 

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 ID_PLCOPENEDITORTHIRDSPLITTER, ID_PLCOPENEDITORLIBRARYPANEL, 

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# Define PLCOpenEditor FileMenu extra items id

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[ID_PLCOPENEDITORFILEMENUGENERATE, 

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] = [wx.NewId() for _init_coll_FileMenu_Items in range(1)]

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# Define PLCOpenEditor EditMenu extra items id

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[ID_PLCOPENEDITOREDITMENUENABLEUNDOREDO, ID_PLCOPENEDITOREDITMENUADDDATATYPE, 

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 ID_PLCOPENEDITOREDITMENUADDFUNCTION, ID_PLCOPENEDITOREDITMENUADDFUNCTIONBLOCK, 

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 ID_PLCOPENEDITOREDITMENUADDPROGRAM, ID_PLCOPENEDITOREDITMENUADDCONFIGURATION,

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 ID_PLCOPENEDITOREDITMENUSEARCHINPROJECT, 

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] = [wx.NewId() for _init_coll_EditMenu_Items in range(7)]

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# Define PLCOpenEditor DisplayMenu extra items id

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[ID_PLCOPENEDITORDISPLAYMENURESETPERSPECTIVE, 

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] = [wx.NewId() for _init_coll_DisplayMenu_Items in range(1)]

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

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#                            EditorToolBar definitions

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

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# Define PLCOpenEditor Toolbar items id

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[ID_PLCOPENEDITOREDITORTOOLBARSELECTION, ID_PLCOPENEDITOREDITORTOOLBARCOMMENT,

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 ID_PLCOPENEDITOREDITORTOOLBARVARIABLE, ID_PLCOPENEDITOREDITORTOOLBARBLOCK,

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 ID_PLCOPENEDITOREDITORTOOLBARCONNECTION, ID_PLCOPENEDITOREDITORTOOLBARWIRE,

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 ID_PLCOPENEDITOREDITORTOOLBARPOWERRAIL, ID_PLCOPENEDITOREDITORTOOLBARRUNG,

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 ID_PLCOPENEDITOREDITORTOOLBARCOIL, ID_PLCOPENEDITOREDITORTOOLBARCONTACT,

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 ID_PLCOPENEDITOREDITORTOOLBARBRANCH, ID_PLCOPENEDITOREDITORTOOLBARINITIALSTEP,

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 ID_PLCOPENEDITOREDITORTOOLBARSTEP, ID_PLCOPENEDITOREDITORTOOLBARTRANSITION,

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 ID_PLCOPENEDITOREDITORTOOLBARACTIONBLOCK, ID_PLCOPENEDITOREDITORTOOLBARDIVERGENCE,

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 ID_PLCOPENEDITOREDITORTOOLBARJUMP, ID_PLCOPENEDITOREDITORTOOLBARMOTION, 

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] = [wx.NewId() for _init_coll_DefaultEditorToolBar_Items in range(18)]

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# Define behaviour of each Toolbar item according to current POU body type 

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# Informations meaning are in this order:

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#  - Item is toggled

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#  - PLCOpenEditor mode where item is displayed (could be more then one)

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#  - Item id

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#  - Item callback function name

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#  - Item icon filename

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#  - Item tooltip text

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EditorToolBarItems = {

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    "FBD" : [(True, FREEDRAWING_MODE|DRIVENDRAWING_MODE,

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              ID_PLCOPENEDITOREDITORTOOLBARMOTION, "OnMotionTool",

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              "move.png", _("Move the view")),

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             (True, FREEDRAWING_MODE|DRIVENDRAWING_MODE,

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              ID_PLCOPENEDITOREDITORTOOLBARCOMMENT, "OnCommentTool",

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              "add_comment.png", _("Create a new comment")),

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             (True, FREEDRAWING_MODE|DRIVENDRAWING_MODE,

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              ID_PLCOPENEDITOREDITORTOOLBARVARIABLE, "OnVariableTool",

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              "add_variable.png", _("Create a new variable")),

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             (True, FREEDRAWING_MODE|DRIVENDRAWING_MODE,

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              ID_PLCOPENEDITOREDITORTOOLBARBLOCK, "OnBlockTool",

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              "add_block.png", _("Create a new block")),

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             (True, FREEDRAWING_MODE|DRIVENDRAWING_MODE, 

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              ID_PLCOPENEDITOREDITORTOOLBARCONNECTION, "OnConnectionTool", 

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              "add_connection.png", _("Create a new connection"))],

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    "LD"  : [(True, FREEDRAWING_MODE|DRIVENDRAWING_MODE,

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              ID_PLCOPENEDITOREDITORTOOLBARMOTION, "OnMotionTool",

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              "move.png", _("Move the view")),

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             (True, FREEDRAWING_MODE, 

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              ID_PLCOPENEDITOREDITORTOOLBARCOMMENT, "OnCommentTool", 

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              "add_comment.png", _("Create a new comment")),

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             (True, FREEDRAWING_MODE, 

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              ID_PLCOPENEDITOREDITORTOOLBARPOWERRAIL, "OnPowerRailTool", 

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              "add_powerrail.png", _("Create a new power rail")),

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             (False, DRIVENDRAWING_MODE, 

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              ID_PLCOPENEDITOREDITORTOOLBARRUNG, "OnRungTool", 

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              "add_rung.png", _("Create a new rung")),

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             (True, FREEDRAWING_MODE, 

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              ID_PLCOPENEDITOREDITORTOOLBARCOIL, "OnCoilTool", 

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              "add_coil.png", _("Create a new coil")),

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             (False, FREEDRAWING_MODE|DRIVENDRAWING_MODE, 

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              ID_PLCOPENEDITOREDITORTOOLBARCONTACT, "OnContactTool", 

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              "add_contact.png", _("Create a new contact")),

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             (False, DRIVENDRAWING_MODE, 

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              ID_PLCOPENEDITOREDITORTOOLBARBRANCH, "OnBranchTool", 

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              "add_branch.png", _("Create a new branch")),

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             (True, FREEDRAWING_MODE, 

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              ID_PLCOPENEDITOREDITORTOOLBARVARIABLE, "OnVariableTool", 

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              "add_variable.png", _("Create a new variable")),

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             (False, FREEDRAWING_MODE|DRIVENDRAWING_MODE, 

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              ID_PLCOPENEDITOREDITORTOOLBARBLOCK, "OnBlockTool", 

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              "add_block.png", _("Create a new block")),

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             (True, FREEDRAWING_MODE, 

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              ID_PLCOPENEDITOREDITORTOOLBARCONNECTION, "OnConnectionTool", 

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              "add_connection.png", _("Create a new connection"))],

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    "SFC" : [(True, FREEDRAWING_MODE|DRIVENDRAWING_MODE,

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              ID_PLCOPENEDITOREDITORTOOLBARMOTION, "OnMotionTool",

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              "move.png", _("Move the view")),

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             (True, FREEDRAWING_MODE|DRIVENDRAWING_MODE, 

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              ID_PLCOPENEDITOREDITORTOOLBARCOMMENT, "OnCommentTool", 

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              "add_comment.png", _("Create a new comment")),

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             (True, FREEDRAWING_MODE|DRIVENDRAWING_MODE, 

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              ID_PLCOPENEDITOREDITORTOOLBARINITIALSTEP, "OnInitialStepTool", 

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              "add_initial_step.png", _("Create a new initial step")),

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             (False, FREEDRAWING_MODE|DRIVENDRAWING_MODE, 

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              ID_PLCOPENEDITOREDITORTOOLBARSTEP, "OnStepTool", 

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              "add_step.png", _("Create a new step")),

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             (True, FREEDRAWING_MODE, 

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              ID_PLCOPENEDITOREDITORTOOLBARTRANSITION, "OnTransitionTool", 

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              "add_transition.png", _("Create a new transition")),

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             (False, FREEDRAWING_MODE|DRIVENDRAWING_MODE, 

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              ID_PLCOPENEDITOREDITORTOOLBARACTIONBLOCK, "OnActionBlockTool", 

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              "add_action.png", _("Create a new action block")),

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             (False, FREEDRAWING_MODE|DRIVENDRAWING_MODE, 

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              ID_PLCOPENEDITOREDITORTOOLBARDIVERGENCE, "OnDivergenceTool", 

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              "add_divergence.png", _("Create a new divergence")),

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             (False, FREEDRAWING_MODE|DRIVENDRAWING_MODE, 

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              ID_PLCOPENEDITOREDITORTOOLBARJUMP, "OnJumpTool", 

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              "add_jump.png", _("Create a new jump")),

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             (True, FREEDRAWING_MODE, 

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              ID_PLCOPENEDITOREDITORTOOLBARVARIABLE, "OnVariableTool", 

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              "add_variable.png", _("Create a new variable")),

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             (True, FREEDRAWING_MODE, 

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              ID_PLCOPENEDITOREDITORTOOLBARBLOCK, "OnBlockTool", 

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              "add_block.png", _("Create a new block")),

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             (True, FREEDRAWING_MODE, 

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              ID_PLCOPENEDITOREDITORTOOLBARCONNECTION, "OnConnectionTool", 

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              "add_connection.png", _("Create a new connection")),

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             (True, FREEDRAWING_MODE, 

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              ID_PLCOPENEDITOREDITORTOOLBARPOWERRAIL, "OnPowerRailTool", 

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              "add_powerrail.png", _("Create a new power rail")),

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             (True, FREEDRAWING_MODE, 

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              ID_PLCOPENEDITOREDITORTOOLBARCONTACT, "OnContactTool", 

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              "add_contact.png", _("Create a new contact"))],

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    "ST"  : [],

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    "IL"  : [],

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    "debug": [(True, FREEDRAWING_MODE|DRIVENDRAWING_MODE,

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              ID_PLCOPENEDITOREDITORTOOLBARMOTION, "OnMotionTool",

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              "move.png", _("Move the view"))],

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}

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

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#                               Helper Functions

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

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# Compatibility function for wx versions < 2.6

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

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    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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[TITLE, EDITORTOOLBAR, FILEMENU, EDITMENU, DISPLAYMENU, TYPESTREE, 

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 INSTANCESTREE, LIBRARYTREE, SCALING, PAGETITLES

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] = range(10)

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def GetShortcutKeyCallbackFunction(viewer_function):

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    def ShortcutKeyFunction(self, event):

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        control = self.FindFocus()

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        if control is not None and control.GetName() in ["Viewer", "TextViewer"]:

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            getattr(control.Parent, viewer_function)()

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        elif isinstance(control, wx.stc.StyledTextCtrl):

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            getattr(control, viewer_function)()

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        elif isinstance(control, wx.TextCtrl):

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            control.ProcessEvent(event)

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    return ShortcutKeyFunction

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def GetParentName(tree, item, parent_type):

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    parent_item = tree.GetItemParent(item)

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    parent_item_type = tree.GetPyData(parent_item)

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    while parent_item_type != parent_type:

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        parent_item = tree.GetItemParent(parent_item)

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        parent_item_type = tree.GetPyData(parent_item)

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    return tree.GetItemText(parent_item)

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def GetDeleteElementFunction(remove_function, parent_type=None, check_function=None):

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    def DeleteElementFunction(self, selected):

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        name = self.TypesTree.GetItemText(selected)

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        if check_function is None or not check_function(self.Controler, name):

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            if parent_type is not None:

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                parent_name = GetParentName(self.TypesTree, selected, parent_type)

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                remove_function(self.Controler, parent_name, name)

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            else:

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                remove_function(self.Controler, name)

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        else:

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            self.ShowErrorMessage(_("\"%s\" is used by one or more POUs. It can't be removed!")%name)

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    return DeleteElementFunction

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def ComputeTabsOrganization(tabs, rect):

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    if len(tabs) == 1:

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        return tabs[0]

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    split = None

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    for idx, tab in enumerate(tabs):

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        if tab["size"][0] == rect.width:

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            if tab["pos"][1] == rect.y:

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                split = (wx.TOP, float(tab["size"][1]) / float(rect.height))

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                split_rect = wx.Rect(rect.x, rect.y + tab["size"][1] + 7, 

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                                     rect.width, rect.height - tab["size"][1] - 7)

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            elif tab["pos"][1] == rect.height + 1 - tab["size"][1]:

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                split = (wx.BOTTOM, 1.0 - float(tab["size"][1]) / float(rect.height))

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                split_rect = wx.Rect(rect.x, rect.y, 

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                                     rect.width, rect.height - tab["size"][1] - 7)

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            break

   359

        elif tab["size"][1] == rect.height:

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            if tab["pos"][0] == rect.x:

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                split = (wx.LEFT, float(tab["size"][0]) / float(rect.width))

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                split_rect = wx.Rect(rect.x + tab["size"][0] + 7, rect.y, 

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                                     rect.width - tab["size"][0] - 7, rect.height)

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            elif tab["pos"][0] == rect.width + 1 - tab["size"][0]:

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                split = (wx.RIGHT, 1.0 - float(tab["size"][0]) / float(rect.width))

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                split_rect = wx.Rect(rect.x, rect.y, 

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                                     rect.width - tab["size"][0] - 7, rect.height)

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            break

   369

    if split != None:

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        split_tab = tabs.pop(idx)

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        return {"split": split,

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                "tab": split_tab, 

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                "others": ComputeTabsOrganization(tabs, split_rect)}

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    return tabs

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

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#                              IDEFrame Base Class

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

   382

   383

UNEDITABLE_NAMES_DICT = dict([(_(name), name) for name in UNEDITABLE_NAMES])

   384

   385

class IDEFrame(wx.Frame):

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    # Compatibility function for wx versions < 2.6

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    if wx.VERSION < (2, 6, 0):

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        def Bind(self, event, function, id = None):

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            if id is not None:

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                event(self, id, function)

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            else:

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                event(self, function)

   394

   395

    def _init_coll_MenuBar_Menus(self, parent):

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        parent.Append(menu=self.FileMenu, title=_(u'&File'))

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        parent.Append(menu=self.EditMenu, title=_(u'&Edit'))

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        parent.Append(menu=self.DisplayMenu, title=_(u'&Display'))

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        parent.Append(menu=self.HelpMenu, title=_(u'&Help'))

   400

   401

    def _init_coll_FileMenu_Items(self, parent):

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        pass

   403

   404

    def _init_coll_EditMenu_Items(self, parent):

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        AppendMenu(parent, help='', id=wx.ID_UNDO,

   406

              kind=wx.ITEM_NORMAL, text=_(u'Undo\tCTRL+Z'))

   407

        AppendMenu(parent, help='', id=wx.ID_REDO,

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              kind=wx.ITEM_NORMAL, text=_(u'Redo\tCTRL+Y'))

   409

        #AppendMenu(parent, help='', id=ID_PLCOPENEDITOREDITMENUENABLEUNDOREDO,

   410

        #      kind=wx.ITEM_CHECK, text=_(u'Enable Undo/Redo'))

   411

        enable_undo_redo = _(u'Enable Undo/Redo') # Keeping text in translations for possible menu reactivation

   412

        parent.AppendSeparator()

   413

        AppendMenu(parent, help='', id=wx.ID_CUT,

   414

              kind=wx.ITEM_NORMAL, text=_(u'Cut\tCTRL+X'))

   415

        AppendMenu(parent, help='', id=wx.ID_COPY,

   416

              kind=wx.ITEM_NORMAL, text=_(u'Copy\tCTRL+C'))

   417

        AppendMenu(parent, help='', id=wx.ID_PASTE,

   418

              kind=wx.ITEM_NORMAL, text=_(u'Paste\tCTRL+V'))

   419

        parent.AppendSeparator()

   420

        AppendMenu(parent, help='', id=ID_PLCOPENEDITOREDITMENUSEARCHINPROJECT,

   421

              kind=wx.ITEM_NORMAL, text=_(u'Search in Project\tCTRL+F'))

   422

        parent.AppendSeparator()

   423

        addmenu = wx.Menu(title='')

   424

        parent.AppendMenu(wx.ID_ADD, _(u"&Add Element"), addmenu)

   425

        AppendMenu(addmenu, help='', id=ID_PLCOPENEDITOREDITMENUADDDATATYPE,

   426

              kind=wx.ITEM_NORMAL, text=_(u'&Data Type'))

   427

        AppendMenu(addmenu, help='', id=ID_PLCOPENEDITOREDITMENUADDFUNCTION,

   428

              kind=wx.ITEM_NORMAL, text=_(u'&Function'))

   429

        AppendMenu(addmenu, help='', id=ID_PLCOPENEDITOREDITMENUADDFUNCTIONBLOCK,

   430

              kind=wx.ITEM_NORMAL, text=_(u'Function &Block'))

   431

        AppendMenu(addmenu, help='', id=ID_PLCOPENEDITOREDITMENUADDPROGRAM,

   432

              kind=wx.ITEM_NORMAL, text=_(u'&Program'))

   433

        AppendMenu(addmenu, help='', id=ID_PLCOPENEDITOREDITMENUADDCONFIGURATION,

   434

              kind=wx.ITEM_NORMAL, text=_(u'&Configuration'))

   435

        AppendMenu(parent, help='', id=wx.ID_SELECTALL,

   436

              kind=wx.ITEM_NORMAL, text=_(u'Select All\tCTRL+A'))

   437

        AppendMenu(parent, help='', id=wx.ID_DELETE,

   438

              kind=wx.ITEM_NORMAL, text=_(u'&Delete'))

   439

        self.Bind(wx.EVT_MENU, self.OnUndoMenu, id=wx.ID_UNDO)

   440

        self.Bind(wx.EVT_MENU, self.OnRedoMenu, id=wx.ID_REDO)

   441

        #self.Bind(wx.EVT_MENU, self.OnEnableUndoRedoMenu, id=ID_PLCOPENEDITOREDITMENUENABLEUNDOREDO)

   442

        self.Bind(wx.EVT_MENU, self.OnCutMenu, id=wx.ID_CUT)

   443

        self.Bind(wx.EVT_MENU, self.OnCopyMenu, id=wx.ID_COPY)

   444

        self.Bind(wx.EVT_MENU, self.OnPasteMenu, id=wx.ID_PASTE)

   445

        self.Bind(wx.EVT_MENU, self.OnSearchInProjectMenu, 

   446

              id=ID_PLCOPENEDITOREDITMENUSEARCHINPROJECT)

   447

        self.Bind(wx.EVT_MENU, self.OnAddDataTypeMenu,

   448

              id=ID_PLCOPENEDITOREDITMENUADDDATATYPE)

   449

        self.Bind(wx.EVT_MENU, self.GenerateAddPouFunction("function"),

   450

              id=ID_PLCOPENEDITOREDITMENUADDFUNCTION)

   451

        self.Bind(wx.EVT_MENU, self.GenerateAddPouFunction("functionBlock"),

   452

              id=ID_PLCOPENEDITOREDITMENUADDFUNCTIONBLOCK)

   453

        self.Bind(wx.EVT_MENU, self.GenerateAddPouFunction("program"),

   454

              id=ID_PLCOPENEDITOREDITMENUADDPROGRAM)

   455

        self.Bind(wx.EVT_MENU, self.OnAddConfigurationMenu,

   456

              id=ID_PLCOPENEDITOREDITMENUADDCONFIGURATION)

   457

        self.Bind(wx.EVT_MENU, self.OnSelectAllMenu, id=wx.ID_SELECTALL)

   458

        self.Bind(wx.EVT_MENU, self.OnDeleteMenu, id=wx.ID_DELETE)

   459

   460

        self.AddToMenuToolBar([(wx.ID_UNDO, "undo.png", _(u'Undo'), None),

   461

                               (wx.ID_REDO, "redo.png", _(u'Redo'), None),

   462

                               None,

   463

                               (wx.ID_CUT, "cut.png", _(u'Cut'), None),

   464

                               (wx.ID_COPY, "copy.png", _(u'Copy'), None),

   465

                               (wx.ID_PASTE, "paste.png", _(u'Paste'), None),

   466

                               None,

   467

                               (ID_PLCOPENEDITOREDITMENUSEARCHINPROJECT, "find.png", _(u'Search in Project'), None)])

   468

   469

    def _init_coll_DisplayMenu_Items(self, parent):

   470

        AppendMenu(parent, help='', id=wx.ID_REFRESH,

   471

              kind=wx.ITEM_NORMAL, text=_(u'Refresh\tCTRL+R'))

   472

        if self.EnableDebug:

   473

            AppendMenu(parent, help='', id=wx.ID_CLEAR,

   474

                  kind=wx.ITEM_NORMAL, text=_(u'Clear Errors\tCTRL+K'))

   475

        parent.AppendSeparator()

   476

        zoommenu = wx.Menu(title='')

   477

        parent.AppendMenu(wx.ID_ZOOM_FIT, _("Zoom"), zoommenu)

   478

        for idx, value in enumerate(ZOOM_FACTORS):

   479

            new_id = wx.NewId()

   480

            AppendMenu(zoommenu, help='', id=new_id,

   481

                  kind=wx.ITEM_RADIO, text=str(int(round(value * 100))) + "%")

   482

            self.Bind(wx.EVT_MENU, self.GenerateZoomFunction(idx), id=new_id)

   483

   484

        if USE_AUI:

   485

            parent.AppendSeparator()