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dialogs/__init__.py
author Andrey Skvortsov <andrej.skvortzov@gmail.com>
Fri, 10 Aug 2018 17:45:33 +0300
changeset 2278 a3ac46366b86
parent 1853 47a3f39bead0
child 2330 8c18b1a3e2bf
child 2347 6dca42cd2b2b
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.


# Package initialization

from __future__ import absolute_import

from dialogs.ConnectionDialog import ConnectionDialog
from dialogs.ActionBlockDialog import ActionBlockDialog
from dialogs.FBDBlockDialog import FBDBlockDialog
from dialogs.FBDVariableDialog import FBDVariableDialog
from dialogs.LDElementDialog import LDElementDialog
from dialogs.LDPowerRailDialog import LDPowerRailDialog
from dialogs.SFCStepDialog import SFCStepDialog
from dialogs.SFCStepNameDialog import SFCStepNameDialog
from dialogs.SFCTransitionDialog import SFCTransitionDialog
from dialogs.SFCDivergenceDialog import SFCDivergenceDialog
from dialogs.ForceVariableDialog import ForceVariableDialog
from dialogs.ArrayTypeDialog import ArrayTypeDialog
from dialogs.DurationEditorDialog import DurationEditorDialog
from dialogs.SearchInProjectDialog import SearchInProjectDialog
from dialogs.BrowseLocationsDialog import BrowseLocationsDialog
from dialogs.ProjectDialog import ProjectDialog
from dialogs.PouDialog import PouDialog
from dialogs.PouTransitionDialog import PouTransitionDialog
from dialogs.PouActionDialog import PouActionDialog
from dialogs.FindInPouDialog import FindInPouDialog
from dialogs.BrowseValuesLibraryDialog import BrowseValuesLibraryDialog
from dialogs.DiscoveryDialog import DiscoveryDialog
beremiz