editors/ProjectNodeEditor.py
author Andrey Skvortsov <andrej.skvortzov@gmail.com>
Fri, 10 Aug 2018 17:45:33 +0300
changeset 2278 a3ac46366b86
parent 1958 67f0d7ff7d3e
child 3303 0ffb41625592
permissions -rw-r--r--
Dirty fix for error '_object_has_no_attribute_'getSlave' in EtherCAT extension

traceback:
File "/home/developer/WorkData/PLC/beremiz/beremiz/IDEFrame.py", line 1433, in OnPouSelectedChanged
window.RefreshView()
File "/home/developer/WorkData/PLC/beremiz/beremiz/etherlab/ConfigEditor.py", line 837, in RefreshView
self.RefreshProcessVariables()
File "/home/developer/WorkData/PLC/beremiz/beremiz/etherlab/ConfigEditor.py", line 886, in RefreshProcessVariables
slaves = self.Controler.GetSlaves(**self.CurrentNodesFilter)
File "/home/developer/WorkData/PLC/beremiz/beremiz/etherlab/EthercatMaster.py", line 341, in GetSlaves
for slave in self.Config.getConfig().getSlave():
<type 'exceptions.AttributeError'>:_'lxml.etree._Element'_object_has_no_attribute_'getSlave'

Steps to reproduce problem:

- Add new EtherCAT master
- Add new EthercatNode to the master
- double click on


this is looks like dirty hack to fix strange problem with initial[0]
changing its type after returning from _init_ method to lxml.etree._Element
As a result all methods generated by class factory are lost.

For example, in function initMethod initial[0].__class__ points to
xmlclass.xmlclass.Config. After map(self.append, initial)
self.Config.__class__ is 'xmlclass.xmlclass.Config' as well.
But after returning from initMethod (_init) in CreateElement
self.Config.__class__ has changed to lxml.etree._Element.


I've noticed similar behavior if copy/deepcopy is used for any child
of etree.ElementBase. See simple example below.
[-------------------------------------------------------------]
#!/usr/bin/python

from __future__ import print_function
from lxml import etree
import copy

class DefaultElementClass(etree.ElementBase):
def getLocalTag(self):
return etree.QName(self.tag).localname


def printInformation(x):
print(x, x.__class__, "getLocalTag" in dir(x))


a = DefaultElementClass()
printInformation(a)

#
printInformation(copy.copy(a))
printInformation(copy.deepcopy(a))
[-------------------------------------------------------------]
#!/usr/bin/env python
# -*- coding: utf-8 -*-

# This file is part of Beremiz, a Integrated Development Environment for
# programming IEC 61131-3 automates supporting plcopen standard and CanFestival.
#
# Copyright (C) 2007: Edouard TISSERANT and Laurent BESSARD
#
# See COPYING file for copyrights details.
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.


from __future__ import absolute_import
import wx

from controls import ProjectPropertiesPanel, VariablePanel
from editors.ConfTreeNodeEditor import ConfTreeNodeEditor
from plcopen.types_enums import ComputeConfigurationName


class ProjectNodeEditor(ConfTreeNodeEditor):

    SHOW_BASE_PARAMS = False
    ENABLE_REQUIRED = True
    CONFNODEEDITOR_TABS = [
        (_("Config variables"), "_create_VariablePanel"),
        (_("Project properties"), "_create_ProjectPropertiesPanel")]

    def _create_VariablePanel(self, prnt):
        self.VariableEditorPanel = VariablePanel(prnt, self, self.Controler, "config", self.Debug)
        self.VariableEditorPanel.SetTagName(self.TagName)

        return self.VariableEditorPanel

    def _create_ProjectPropertiesPanel(self, prnt):
        self.ProjectProperties = ProjectPropertiesPanel(prnt, self.Controler, self.ParentWindow, self.ENABLE_REQUIRED)

        return self.ProjectProperties

    def __init__(self, parent, controler, window):
        configuration = controler.GetProjectMainConfigurationName()
        if configuration is not None:
            tagname = ComputeConfigurationName(configuration)
        else:
            tagname = ""

        ConfTreeNodeEditor.__init__(self, parent, controler, window, tagname)

        buttons_sizer = self.GenerateMethodButtonSizer()
        self.MainSizer.InsertSizer(0, buttons_sizer, 0, border=5, flag=wx.ALL)
        self.MainSizer.Layout()

        self.VariableEditor = self.VariableEditorPanel

    def GetTagName(self):
        return self.Controler.CTNName()

    def SetTagName(self, tagname):
        self.TagName = tagname
        if self.VariableEditor is not None:
            self.VariableEditor.SetTagName(tagname)

    def GetTitle(self):
        fullname = _(self.Controler.CTNName())
        if self.Controler.CTNTestModified():
            return "~%s~" % fullname
        return fullname

    def RefreshView(self, variablepanel=True):
        ConfTreeNodeEditor.RefreshView(self)
        self.VariableEditorPanel.RefreshView()
        self.ProjectProperties.RefreshView()

    def GetBufferState(self):
        return self.Controler.GetBufferState()

    def Undo(self):
        self.Controler.LoadPrevious()
        self.ParentWindow.CloseTabsWithoutModel()

    def Redo(self):
        self.Controler.LoadNext()
        self.ParentWindow.CloseTabsWithoutModel()