controls/CustomEditableListBox.py
author Edouard Tisserant
Wed, 01 Mar 2023 10:54:54 +0100
changeset 3740 ac0e6de439b5
parent 1881 091005ec69c4
child 3303 0ffb41625592
permissions -rw-r--r--
Linux runtime: overrun detection for real-time timers and for plc execution.

If real-time timer wakes-up PLC thread too late (10% over period), then
warning is logged.

If PLC code (IO retreive, execution, IO publish) takes longer than requested
PLC execution cycle, then warning is logged, and CPU hoogging is mitigated
by delaying next PLC execution a few cylces more until having at least
1ms minimal idle time.
#!/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.gizmos


class CustomEditableListBox(wx.gizmos.EditableListBox):

    def __init__(self, *args, **kwargs):
        wx.gizmos.EditableListBox.__init__(self, *args, **kwargs)

        listbox = self.GetListCtrl()
        listbox.Bind(wx.EVT_KEY_DOWN, self.OnKeyDown)
        listbox.Bind(wx.EVT_LIST_BEGIN_LABEL_EDIT, self.OnLabelBeginEdit)
        listbox.Bind(wx.EVT_LIST_END_LABEL_EDIT, self.OnLabelEndEdit)

        for button, tooltip, call_function in [
                (self.GetEditButton(), _("Edit item"), "_OnEditButton"),
                (self.GetNewButton(), _("New item"), "_OnNewButton"),
                (self.GetDelButton(), _("Delete item"), "_OnDelButton"),
                (self.GetUpButton(), _("Move up"), "_OnUpButton"),
                (self.GetDownButton(), _("Move down"), "_OnDownButton")]:
            button.SetToolTipString(tooltip)
            button.Bind(wx.EVT_BUTTON, self.GetButtonPressedFunction(call_function))

        self.Editing = False

    def EnsureCurrentItemVisible(self):
        listctrl = self.GetListCtrl()
        listctrl.EnsureVisible(listctrl.GetFocusedItem())

    def OnLabelBeginEdit(self, event):
        self.Editing = True
        func = getattr(self, "_OnLabelBeginEdit", None)
        if func is not None:
            func(event)
        else:
            event.Skip()

    def OnLabelEndEdit(self, event):
        self.Editing = False
        func = getattr(self, "_OnLabelEndEdit", None)
        if func is not None:
            func(event)
        else:
            event.Skip()

    def GetButtonPressedFunction(self, call_function):
        def OnButtonPressed(event):
            if wx.Platform != '__WXMSW__' or not self.Editing:
                func = getattr(self, call_function, None)
                if func is not None:
                    func(event)
                    wx.CallAfter(self.EnsureCurrentItemVisible)
                else:
                    wx.CallAfter(self.EnsureCurrentItemVisible)
                    event.Skip()
        return OnButtonPressed

    def OnKeyDown(self, event):
        button = None
        keycode = event.GetKeyCode()
        if keycode in (wx.WXK_ADD, wx.WXK_NUMPAD_ADD):
            button = self.GetNewButton()
        elif keycode in (wx.WXK_DELETE, wx.WXK_NUMPAD_DELETE):
            button = self.GetDelButton()
        elif keycode == wx.WXK_UP and event.ShiftDown():
            button = self.GetUpButton()
        elif keycode == wx.WXK_DOWN and event.ShiftDown():
            button = self.GetDownButton()
        elif keycode == wx.WXK_SPACE:
            button = self.GetEditButton()
        if button is not None and button.IsEnabled():
            button.ProcessEvent(wx.CommandEvent(wx.EVT_BUTTON.typeId, button.GetId()))
        else:
            event.Skip()