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 wx
import wx.grid
class CustomGrid(wx.grid.Grid):
def __init__(self, *args, **kwargs):
wx.grid.Grid.__init__(self, *args, **kwargs)
self.Editable = True
self.AddButton = None
self.DeleteButton = None
self.UpButton = None
self.DownButton = None
self.SetFont(wx.Font(12, wx.DEFAULT, wx.NORMAL, wx.NORMAL, False, 'Sans'))
self.SetLabelFont(wx.Font(10, wx.DEFAULT, wx.NORMAL, wx.NORMAL, False, 'Sans'))
self.SetSelectionBackground(wx.WHITE)
self.SetSelectionForeground(wx.BLACK)
self.DisableDragRowSize()
self.Bind(wx.grid.EVT_GRID_SELECT_CELL, self.OnSelectCell)
self.Bind(wx.grid.EVT_GRID_EDITOR_HIDDEN, self.OnEditorHidden)
self.Bind(wx.EVT_KEY_DOWN, self.OnKeyDown)
def SetFocus(self):
if self:
wx.grid.Grid.SetFocus(self)
def SetDefaultValue(self, default_value):
self.DefaultValue = default_value
def SetEditable(self, editable=True):
self.Editable = editable
self.RefreshButtons()
def SetButtons(self, buttons):
for name in ["Add", "Delete", "Up", "Down"]:
button = buttons.get(name, None)
setattr(self, "%sButton" % name, button)
if button is not None:
button.Bind(wx.EVT_BUTTON, getattr(self, "On%sButton" % name))
def RefreshButtons(self):
if self:
rows = self.Table.GetNumberRows()
row = self.GetGridCursorRow()
if self.AddButton is not None:
self.AddButton.Enable(self.Editable)
if self.DeleteButton is not None:
self.DeleteButton.Enable(self.Editable and rows > 0)
if self.UpButton is not None:
self.UpButton.Enable(self.Editable and row > 0)
if self.DownButton is not None:
self.DownButton.Enable(self.Editable and 0 <= row < rows - 1)
def CloseEditControl(self):
row, col = self.GetGridCursorRow(), self.GetGridCursorCol()
if row != -1 and col != -1:
self.SetGridCursor(row, col)
def AddRow(self):
self.CloseEditControl()
new_row = self.GetGridCursorRow() + 1
col = max(self.GetGridCursorCol(), 0)
if getattr(self, "_AddRow", None) is not None:
new_row = self._AddRow(new_row)
else:
self.Table.InsertRow(new_row, self.DefaultValue.copy())
self.Table.ResetView(self)
if new_row is not None:
self.SetSelectedCell(new_row, col)
def DeleteRow(self):
self.CloseEditControl()
row = self.GetGridCursorRow()
if row >= 0:
col = self.GetGridCursorCol()
if getattr(self, "_DeleteRow", None) is not None:
self._DeleteRow(row)
else:
self.Table.RemoveRow(row)
self.Table.ResetView(self)
if self.Table.GetNumberRows() > 0:
self.SetSelectedCell(min(row, self.Table.GetNumberRows() - 1), col)
def MoveRow(self, row, move):
self.CloseEditControl()
col = self.GetGridCursorCol()
if getattr(self, "_MoveRow", None) is not None:
new_row = self._MoveRow(row, move)
else:
new_row = self.Table.MoveRow(row, move)
if new_row != row:
self.Table.ResetView(self)
if new_row != row:
self.SetSelectedCell(new_row, col)
def SetSelectedCell(self, row, col):
self.SetGridCursor(row, col)
self.MakeCellVisible(row, col)
self.RefreshButtons()
def OnAddButton(self, event):
self.AddRow()
self.SetFocus()
event.Skip()
def OnDeleteButton(self, event):
self.DeleteRow()
self.SetFocus()
event.Skip()
def OnUpButton(self, event):
self.MoveRow(self.GetGridCursorRow(), -1)
self.SetFocus()
event.Skip()
def OnDownButton(self, event):
self.MoveRow(self.GetGridCursorRow(), 1)
self.SetFocus()
event.Skip()
def OnSelectCell(self, event):
wx.CallAfter(self.RefreshButtons)
event.Skip()
def OnEditorHidden(self, event):
wx.CallAfter(self.SetFocus)
event.Skip()
def OnKeyDown(self, event):
key_handled = False
keycode = event.GetKeyCode()
if keycode == wx.WXK_TAB:
row = self.GetGridCursorRow()
col = self.GetGridCursorCol()
if event.ShiftDown():
if row < 0 or col == 0:
self.Navigate(wx.NavigationKeyEvent.IsBackward)
key_handled = True
elif row < 0 or col == self.Table.GetNumberCols() - 1:
self.Navigate(wx.NavigationKeyEvent.IsForward)
key_handled = True
elif keycode in (wx.WXK_ADD, wx.WXK_NUMPAD_ADD) and self.Editable:
self.AddRow()
key_handled = True
elif keycode in (wx.WXK_DELETE, wx.WXK_NUMPAD_DELETE) and self.Editable:
self.DeleteRow()
key_handled = True
elif keycode == wx.WXK_UP and event.ShiftDown() and self.Editable:
self.MoveRow(self.GetGridCursorRow(), -1)
key_handled = True
elif keycode == wx.WXK_DOWN and event.ShiftDown() and self.Editable:
self.MoveRow(self.GetGridCursorRow(), 1)
key_handled = True
if not key_handled:
event.Skip()