util/MiniTextControler.py
author Andrey Skvortsov <andrej.skvortzov@gmail.com>
Wed, 07 Dec 2016 19:24:16 +0300
changeset 1596 f5868f866d2b
parent 1511 91538d0c242c
child 1735 c02818d7e29f
permissions -rw-r--r--
stop PLC before unloading


This fixes segmentation fault if service was quit without stopping it.
It has happened if Beremiz service was quit using taskbar icon or by
closing Beremiz IDE (in case of autostarted local service).

In second case to trigger the bug following step has to be done:
1. Open Beremiz IDE
2. Open project, compile and connect to LOCAL:// runtime
3. Transfer and start the PLC program
4. Open other project without disconneting the PLC runtime
5. Close Beremiz IDE
#!/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.

"""
Minimal tab controller for a simple text editor
"""

import os

class MiniTextControler:
    
    def __init__(self, filepath, controller):
        self.FilePath = filepath
        self.BaseController = controller
    
    def __del__(self):
        self.BaseController = None
    
    def CTNFullName(self):
        return ""
    
    def SetEditedElementText(self, tagname, text):
        file = open(self.FilePath, "w")
        file.write(text)
        file.close()
        
    def GetEditedElementText(self, tagname, debug = False):
        if os.path.isfile(self.FilePath):
            file = open(self.FilePath, "r")
            text = file.read()
            file.close()
            return text
        return ""
    
    def GetEditedElementInterfaceVars(self, tagname, tree=False, debug = False):
        return []
    
    def GetEditedElementType(self, tagname, debug = False):
        return "program"
    
    def GetBlockType(self, type, inputs = None, debug = False):
        return self.BaseController.GetBlockType(type, inputs, debug)
    
    def GetBlockTypes(self, tagname = "", debug = False):
        return self.BaseController.GetBlockTypes(tagname, debug)
    
    def GetDataTypes(self, tagname = "", basetypes = True, only_locatables = False, debug = False):
        return self.BaseController.GetDataTypes(tagname, basetypes, only_locatables, debug)
    
    def GetEnumeratedDataValues(self, debug = False):
        return self.BaseController.GetEnumeratedDataValues(debug)
    
    def StartBuffering(self):
        pass

    def EndBuffering(self):
        pass

    def BufferProject(self):
        pass