CodeFileTreeNode.py
author Edouard Tisserant
Tue, 16 Jun 2020 10:12:21 +0200
changeset 2675 3ca5611d6308
parent 2529 efb532295607
child 2709 a1b185e21295
permissions -rw-r--r--
Modbus: Delete stored configuration when identical to default configuration.
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#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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# This file is part of Beremiz, a Integrated Development Environment for
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# programming IEC 61131-3 automates supporting plcopen standard and CanFestival.
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#
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# Copyright (C) 2007: Edouard TISSERANT and Laurent BESSARD
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#
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# See COPYING file for copyrights details.
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License
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# as published by the Free Software Foundation; either version 2
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# of the License, or (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
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from __future__ import absolute_import
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import os
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import re
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import traceback
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from builtins import str as text
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from copy import deepcopy
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from lxml import etree
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from xmlclass import GenerateParserFromXSDstring
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from PLCControler import UndoBuffer
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from ConfigTreeNode import XSDSchemaErrorMessage
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from plcopen.plcopen import TestTextElement
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from editors.CodeFileEditor import GetSectionsText
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CODEFILE_XSD = """<?xml version="1.0" encoding="ISO-8859-1" ?>
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<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema"
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            xmlns:xhtml="http://www.w3.org/1999/xhtml">
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  <xsd:element name="%(codefile_name)s">
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    <xsd:complexType>
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      <xsd:sequence>
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        %(includes_section)s
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        <xsd:element name="variables">
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          <xsd:complexType>
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            <xsd:sequence>
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              <xsd:element name="variable" minOccurs="0" maxOccurs="unbounded">
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                <xsd:complexType>
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                  <xsd:attribute name="name" type="xsd:string" use="required"/>
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                  <xsd:attribute name="type" type="xsd:string" use="required"/>
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                  <xsd:attribute name="class" use="optional">
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                    <xsd:simpleType>
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                      <xsd:restriction base="xsd:string">
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                        <xsd:enumeration value="input"/>
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                        <xsd:enumeration value="memory"/>
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                        <xsd:enumeration value="output"/>
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                      </xsd:restriction>
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                    </xsd:simpleType>
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                  </xsd:attribute>
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                  <xsd:attribute name="initial" type="xsd:string" use="optional" default=""/>
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                  <xsd:attribute name="desc" type="xsd:string" use="optional" default=""/>
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                  <xsd:attribute name="onchange" type="xsd:string" use="optional" default=""/>
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                  <xsd:attribute name="opts" type="xsd:string" use="optional" default=""/>
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                </xsd:complexType>
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              </xsd:element>
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            </xsd:sequence>
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          </xsd:complexType>
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        </xsd:element>
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        %(sections)s
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      </xsd:sequence>
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    </xsd:complexType>
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  </xsd:element>
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  <xsd:complexType name="CodeText">
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    <xsd:annotation>
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      <xsd:documentation>Formatted text according to parts of XHTML 1.1</xsd:documentation>
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    </xsd:annotation>
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    <xsd:sequence>
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      <xsd:any namespace="http://www.w3.org/1999/xhtml" processContents="lax"/>
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    </xsd:sequence>
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  </xsd:complexType>
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</xsd:schema>"""
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SECTION_TAG_ELEMENT = "<xsd:element name=\"%s\" type=\"CodeText\"/>"
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class CodeFile(object):
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    CODEFILE_NAME = "CodeFile"
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    SECTIONS_NAMES = []
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    def __init__(self):
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        sections_str = {"codefile_name": self.CODEFILE_NAME}
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        if "includes" in self.SECTIONS_NAMES:
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            sections_str["includes_section"] = SECTION_TAG_ELEMENT % "includes"
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        else:
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            sections_str["includes_section"] = ""
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        sections_str["sections"] = "\n".join(
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            [SECTION_TAG_ELEMENT % name
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             for name in self.SECTIONS_NAMES if name != "includes"])
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        self.CodeFileParser = GenerateParserFromXSDstring(
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            CODEFILE_XSD % sections_str)
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        self.CodeFileVariables = etree.XPath("variables/variable")
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        filepath = self.CodeFileName()
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        if os.path.isfile(filepath):
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            xmlfile = open(filepath, 'r')
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            codefile_xml = xmlfile.read()
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            xmlfile.close()
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            codefile_xml = codefile_xml.replace(
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                '<%s>' % self.CODEFILE_NAME,
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                '<%s xmlns:xhtml="http://www.w3.org/1999/xhtml">' % self.CODEFILE_NAME)
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            for cre, repl in [
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                    (re.compile(r"(?<!<xhtml:p>)(?:<!\[CDATA\[)"), "<xhtml:p><![CDATA["),
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                    (re.compile(r"(?:]]>)(?!</xhtml:p>)"), "]]></xhtml:p>")]:
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                codefile_xml = cre.sub(repl, codefile_xml)
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            try:
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                self.CodeFile, error = self.CodeFileParser.LoadXMLString(codefile_xml)
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                if error is not None:
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                    (fname, lnum, src) = ((self.CODEFILE_NAME,) + error)
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                    self.GetCTRoot().logger.write_warning(XSDSchemaErrorMessage.format(a1=fname, a2=lnum, a3=src))
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                self.CreateCodeFileBuffer(True)
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            except Exception as exc:
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                msg = _("Couldn't load confnode parameters {a1} :\n {a2}").format(a1=self.CTNName(), a2=text(exc))
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                self.GetCTRoot().logger.write_error(msg)
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                self.GetCTRoot().logger.write_error(traceback.format_exc())
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                raise Exception
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        else:
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            self.CodeFile = self.CodeFileParser.CreateRoot()
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            self.CreateCodeFileBuffer(False)
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            self.OnCTNSave()
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    def GetBaseTypes(self):
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        return self.GetCTRoot().GetBaseTypes()
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    def GetDataTypes(self, basetypes=False):
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        return self.GetCTRoot().GetDataTypes(basetypes=basetypes)
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    def GenerateNewName(self, name, format):
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        return self.GetCTRoot().GenerateNewName(
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            None, name, format,
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            exclude=dict([(var.getname().upper(), True)
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                          for var in self.CodeFile.variables.getvariable()]))
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    def SetVariables(self, variables):
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        self.CodeFile.variables.setvariable([])
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        for var in variables:
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            variable = self.CodeFileParser.CreateElement("variable", "variables")
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            variable.setname(var["Name"])
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            variable.settype(var["Type"])
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            variable.setinitial(var["Initial"])
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            variable.setdesc(var["Description"])
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            variable.setonchange(var["OnChange"])
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            variable.setopts(var["Options"])
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            self.CodeFile.variables.appendvariable(variable)
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    def GetVariables(self):
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        datas = []
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        for var in self.CodeFileVariables(self.CodeFile):
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            datas.append({
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                "Name":        var.getname(),
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                "Type":        var.gettype(),
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                "Initial":     var.getinitial(),
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                "Description": var.getdesc(),
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                "OnChange":    var.getonchange(),
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                "Options":     var.getopts(),
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            })
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        return datas
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    def SetTextParts(self, parts):
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        for section in self.SECTIONS_NAMES:
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            section_code = parts.get(section)
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            if section_code is not None:
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                getattr(self.CodeFile, section).setanyText(section_code)
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    def GetTextParts(self):
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        return dict([(section, getattr(self.CodeFile, section).getanyText())
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                     for section in self.SECTIONS_NAMES])
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    def CTNTestModified(self):
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        return self.ChangesToSave or not self.CodeFileIsSaved()
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    def OnCTNSave(self, from_project_path=None):
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        filepath = self.CodeFileName()
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        xmlfile = open(filepath, "w")
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        xmlfile.write(etree.tostring(
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            self.CodeFile,
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            pretty_print=True,
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            xml_declaration=True,
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            encoding='utf-8'))
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        xmlfile.close()
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        self.MarkCodeFileAsSaved()
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        return True
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    def CTNGlobalInstances(self):
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        variables = self.CodeFileVariables(self.CodeFile)
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        ret = [(variable.getname(),
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                variable.gettype(),
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                variable.getinitial())
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               for variable in variables]
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        ret.extend([("On"+variable.getname()+"Change", "python_poll", "")
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                    for variable in variables
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                    if variable.getonchange()])
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        return ret
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    def CTNSearch(self, criteria):
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        variables = self.GetVariables()
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        results = []
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        tagname = self.CTNFullName()
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        for index, var in enumerate(variables):
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            varname = var["Name"]
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            results.extend([((tagname, "var_inout", index, "name"),) + result
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                            for result in TestTextElement(varname, criteria)])
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        results.extend([((tagname, "body"),) + result
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                        for result in TestTextElement(
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                            GetSectionsText(self, lambda x:""), criteria)])
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        return results
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   228
# -------------------------------------------------------------------------------
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#                      Current Buffering Management Functions
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   230
# -------------------------------------------------------------------------------
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    def Copy(self, model):
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        """
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        Return a copy of the codefile model
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        """
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        return deepcopy(model)
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   237
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    def CreateCodeFileBuffer(self, saved):
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        self.Buffering = False
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        self.CodeFileBuffer = UndoBuffer(self.CodeFileParser.Dumps(self.CodeFile), saved)
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    def BufferCodeFile(self):
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        self.CodeFileBuffer.Buffering(self.CodeFileParser.Dumps(self.CodeFile))
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    def StartBuffering(self):
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        self.Buffering = True
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    def EndBuffering(self):
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        if self.Buffering:
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            self.CodeFileBuffer.Buffering(self.CodeFileParser.Dumps(self.CodeFile))
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            self.Buffering = False
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    def MarkCodeFileAsSaved(self):
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        self.EndBuffering()
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        self.CodeFileBuffer.CurrentSaved()
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    def CodeFileIsSaved(self):
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        return self.CodeFileBuffer.IsCurrentSaved() and not self.Buffering
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    def LoadPrevious(self):
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        self.EndBuffering()
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        self.CodeFile = self.CodeFileParser.Loads(self.CodeFileBuffer.Previous())
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    def LoadNext(self):
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        self.CodeFile = self.CodeFileParser.Loads(self.CodeFileBuffer.Next())
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    def GetBufferState(self):
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        first = self.CodeFileBuffer.IsFirst() and not self.Buffering
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        last = self.CodeFileBuffer.IsLast()
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        return not first, not last