beremiz

make clipboard open minimal time as wxPython documentation recommends

2018-05-25, Andrey Skvortsov
5ce6d08ff2c7
make clipboard open minimal time as wxPython documentation recommends

https://wxpython.org/Phoenix/docs/html/wx.Clipboard.html#wx.Clipboard.GetData

"Call wx.Clipboard.Open to get ownership of the clipboard. If this
operation returns True, you now own the clipboard. Call
wx.Clipboard.SetData to put data on the clipboard, or
wx.Clipboard.GetData to retrieve data from the clipboard. Call
wx.Clipboard.Close to close the clipboard and relinquish ownership.
You should keep the clipboard open only momentarily."

Maybe it makes situation with pretty annoying error 'clipboard already
open' a little bit better.

traceback:
File "/home/developer/WorkData/PLC/beremiz/avangard-beremiz-ide/src/../../beremiz/BeremizIDE.py", line 955, in OnSaveProjectMenu
self.RefreshAfterSave()
File "/home/developer/WorkData/PLC/beremiz/avangard-beremiz-ide/src/../../beremiz/BeremizIDE.py", line 946, in RefreshAfterSave
self._Refresh(TITLE, FILEMENU, EDITMENU, PAGETITLES)
File "/home/developer/WorkData/PLC/beremiz/avangard-beremiz-ide/src/../../beremiz/IDEFrame.py", line 926, in _Refresh
self.RefreshFunctions[element]()
File "/home/developer/WorkData/PLC/beremiz/avangard-beremiz-ide/src/../../beremiz/BeremizIDE.py", line 766, in RefreshEditMenu
IDEFrame.RefreshEditMenu(self)
File "/home/developer/WorkData/PLC/beremiz/avangard-beremiz-ide/src/../../beremiz/IDEFrame.py", line 1185, in RefreshEditMenu
if self.GetCopyBuffer() is not None:
File "/home/developer/WorkData/PLC/beremiz/avangard-beremiz-ide/src/../../beremiz/IDEFrame.py", line 956, in GetCopyBuffer
if wx.TheClipboard.Open():
File "/usr/lib/python2.7/dist-packages/wx-3.0-gtk3/wx/_misc.py", line 5793, in Open
return _misc_.Clipboard_Open(*args, **kwargs)
: C++ assertion "!m_open" failed at ../src/gtk/clipbrd.cpp(598) in Open(): clipboard already open
#!/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 os
import re
import traceback
from copy import deepcopy
from lxml import etree
from xmlclass import GenerateParserFromXSDstring
from PLCControler import UndoBuffer
from ConfigTreeNode import XSDSchemaErrorMessage
CODEFILE_XSD = """<?xml version="1.0" encoding="ISO-8859-1" ?>
<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema"
xmlns:xhtml="http://www.w3.org/1999/xhtml">
<xsd:element name="%(codefile_name)s">
<xsd:complexType>
<xsd:sequence>
%(includes_section)s
<xsd:element name="variables">
<xsd:complexType>
<xsd:sequence>
<xsd:element name="variable" minOccurs="0" maxOccurs="unbounded">
<xsd:complexType>
<xsd:attribute name="name" type="xsd:string" use="required"/>
<xsd:attribute name="type" type="xsd:string" use="required"/>
<xsd:attribute name="class" use="optional">
<xsd:simpleType>
<xsd:restriction base="xsd:string">
<xsd:enumeration value="input"/>
<xsd:enumeration value="memory"/>
<xsd:enumeration value="output"/>
</xsd:restriction>
</xsd:simpleType>
</xsd:attribute>
<xsd:attribute name="initial" type="xsd:string" use="optional" default=""/>
<xsd:attribute name="desc" type="xsd:string" use="optional" default=""/>
<xsd:attribute name="onchange" type="xsd:string" use="optional" default=""/>
<xsd:attribute name="opts" type="xsd:string" use="optional" default=""/>
</xsd:complexType>
</xsd:element>
</xsd:sequence>
</xsd:complexType>
</xsd:element>
%(sections)s
</xsd:sequence>
</xsd:complexType>
</xsd:element>
<xsd:complexType name="CodeText">
<xsd:annotation>
<xsd:documentation>Formatted text according to parts of XHTML 1.1</xsd:documentation>
</xsd:annotation>
<xsd:sequence>
<xsd:any namespace="http://www.w3.org/1999/xhtml" processContents="lax"/>
</xsd:sequence>
</xsd:complexType>
</xsd:schema>"""
SECTION_TAG_ELEMENT = "<xsd:element name=\"%s\" type=\"CodeText\"/>"
class CodeFile(object):
CODEFILE_NAME = "CodeFile"
SECTIONS_NAMES = []
def __init__(self):
sections_str = {"codefile_name": self.CODEFILE_NAME}
if "includes" in self.SECTIONS_NAMES:
sections_str["includes_section"] = SECTION_TAG_ELEMENT % "includes"
else:
sections_str["includes_section"] = ""
sections_str["sections"] = "\n".join(
[SECTION_TAG_ELEMENT % name
for name in self.SECTIONS_NAMES if name != "includes"])
self.CodeFileParser = GenerateParserFromXSDstring(
CODEFILE_XSD % sections_str)
self.CodeFileVariables = etree.XPath("variables/variable")
filepath = self.CodeFileName()
if os.path.isfile(filepath):
xmlfile = open(filepath, 'r')
codefile_xml = xmlfile.read()
xmlfile.close()
codefile_xml = codefile_xml.replace(
'<%s>' % self.CODEFILE_NAME,
'<%s xmlns:xhtml="http://www.w3.org/1999/xhtml">' % self.CODEFILE_NAME)
for cre, repl in [
(re.compile("(?<!<xhtml:p>)(?:<!\[CDATA\[)"), "<xhtml:p><![CDATA["),
(re.compile("(?:]]>)(?!</xhtml:p>)"), "]]></xhtml:p>")]:
codefile_xml = cre.sub(repl, codefile_xml)
try:
self.CodeFile, error = self.CodeFileParser.LoadXMLString(codefile_xml)
if error is not None:
(fname, lnum, src) = ((self.CODEFILE_NAME,) + error)
self.GetCTRoot().logger.write_warning(XSDSchemaErrorMessage.format(a1=fname, a2=lnum, a3=src))
self.CreateCodeFileBuffer(True)
except Exception, exc:
msg = _("Couldn't load confnode parameters {a1} :\n {a2}").format(a1=self.CTNName(), a2=unicode(exc))
self.GetCTRoot().logger.write_error(msg)
self.GetCTRoot().logger.write_error(traceback.format_exc())
raise Exception
else:
self.CodeFile = self.CodeFileParser.CreateRoot()
self.CreateCodeFileBuffer(False)
self.OnCTNSave()
def GetBaseTypes(self):
return self.GetCTRoot().GetBaseTypes()
def GetDataTypes(self, basetypes=False):
return self.GetCTRoot().GetDataTypes(basetypes=basetypes)
def GenerateNewName(self, name, format):
return self.GetCTRoot().GenerateNewName(
None, name, format,
exclude=dict([(var.getname().upper(), True)
for var in self.CodeFile.variables.getvariable()]))
def SetVariables(self, variables):
self.CodeFile.variables.setvariable([])
for var in variables:
variable = self.CodeFileParser.CreateElement("variable", "variables")
variable.setname(var["Name"])
variable.settype(var["Type"])
variable.setinitial(var["Initial"])
variable.setdesc(var["Description"])
variable.setonchange(var["OnChange"])
variable.setopts(var["Options"])
self.CodeFile.variables.appendvariable(variable)
def GetVariables(self):
datas = []
for var in self.CodeFileVariables(self.CodeFile):
datas.append({
"Name": var.getname(),
"Type": var.gettype(),
"Initial": var.getinitial(),
"Description": var.getdesc(),
"OnChange": var.getonchange(),
"Options": var.getopts(),
})
return datas
def SetTextParts(self, parts):
for section in self.SECTIONS_NAMES:
section_code = parts.get(section)
if section_code is not None:
getattr(self.CodeFile, section).setanyText(section_code)
def GetTextParts(self):
return dict([(section, getattr(self.CodeFile, section).getanyText())
for section in self.SECTIONS_NAMES])
def CTNTestModified(self):
return self.ChangesToSave or not self.CodeFileIsSaved()
def OnCTNSave(self, from_project_path=None):
filepath = self.CodeFileName()
xmlfile = open(filepath, "w")
xmlfile.write(etree.tostring(
self.CodeFile,
pretty_print=True,
xml_declaration=True,
encoding='utf-8'))
xmlfile.close()
self.MarkCodeFileAsSaved()
return True
def CTNGlobalInstances(self):
variables = self.CodeFileVariables(self.CodeFile)
ret = [(variable.getname(),
variable.gettype(),
variable.getinitial())
for variable in variables]
ret.extend([("On"+variable.getname()+"Change", "python_poll", "")
for variable in variables
if variable.getonchange()])
return ret
# -------------------------------------------------------------------------------
# Current Buffering Management Functions
# -------------------------------------------------------------------------------
def Copy(self, model):
"""
Return a copy of the codefile model
"""
return deepcopy(model)
def CreateCodeFileBuffer(self, saved):
self.Buffering = False
self.CodeFileBuffer = UndoBuffer(self.CodeFileParser.Dumps(self.CodeFile), saved)
def BufferCodeFile(self):
self.CodeFileBuffer.Buffering(self.CodeFileParser.Dumps(self.CodeFile))
def StartBuffering(self):
self.Buffering = True
def EndBuffering(self):
if self.Buffering:
self.CodeFileBuffer.Buffering(self.CodeFileParser.Dumps(self.CodeFile))
self.Buffering = False
def MarkCodeFileAsSaved(self):
self.EndBuffering()
self.CodeFileBuffer.CurrentSaved()
def CodeFileIsSaved(self):
return self.CodeFileBuffer.IsCurrentSaved() and not self.Buffering
def LoadPrevious(self):
self.EndBuffering()
self.CodeFile = self.CodeFileParser.Loads(self.CodeFileBuffer.Previous())
def LoadNext(self):
self.CodeFile = self.CodeFileParser.Loads(self.CodeFileBuffer.Next())
def GetBufferState(self):
first = self.CodeFileBuffer.IsFirst() and not self.Buffering
last = self.CodeFileBuffer.IsLast()
return not first, not last