controls/DurationCellEditor.py
author Andrey Skvortsov <andrej.skvortzov@gmail.com>
Wed, 29 Aug 2018 18:53:02 +0300
changeset 2301 5b8a7dd43f9f
parent 1881 091005ec69c4
child 2734 3768af52835a
permissions -rw-r--r--
Avoid usage of localized strings before initialization during import in many modules

This happens if import is done before i18n setup
(InstallLocalRessources()).
This affects PLCOpenEditor mostly. Beremiz IDE is free from this issue, but moving
initialization from import should make modules more robust.
Otherwise execution result depends on where and when import was done
and this is not a good thing.

Some modules (ConfigTreeNode, features, CodeFileEditor related
classes) still have this, but they are used only in Beremiz.
Most problems result in non-working internatialization.
In some cases (VariablePanel) there is backtrace, because localized
key is not found in non-localized dictionary.
#!/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

from dialogs.DurationEditorDialog import DurationEditorDialog


class DurationCellControl(wx.PyControl):

    '''
    Custom cell editor control with a text box and a button that launches
    the DurationEditorDialog.
    '''
    def __init__(self, parent):
        wx.PyControl.__init__(self, parent)

        main_sizer = wx.FlexGridSizer(cols=2, hgap=0, rows=1, vgap=0)
        main_sizer.AddGrowableCol(0)
        main_sizer.AddGrowableRow(0)

        # create location text control
        self.Duration = wx.TextCtrl(self, size=wx.Size(0, -1),
                                    style=wx.TE_PROCESS_ENTER)
        self.Duration.Bind(wx.EVT_KEY_DOWN, self.OnDurationChar)
        main_sizer.AddWindow(self.Duration, flag=wx.GROW)

        # create browse button
        self.EditButton = wx.Button(self, label='...', size=wx.Size(30, -1))
        self.Bind(wx.EVT_BUTTON, self.OnEditButtonClick, self.EditButton)
        main_sizer.AddWindow(self.EditButton, flag=wx.GROW)

        self.Bind(wx.EVT_SIZE, self.OnSize)

        self.SetSizer(main_sizer)

        self.Default = None

    def SetValue(self, value):
        self.Default = value
        self.Duration.SetValue(value)

    def GetValue(self):
        return self.Duration.GetValue()

    def OnSize(self, event):
        self.Layout()

    def OnEditButtonClick(self, event):
        # pop up the Duration Editor dialog
        dialog = DurationEditorDialog(self)
        dialog.SetDuration(self.Duration.GetValue())
        if dialog.ShowModal() == wx.ID_OK:
            # set the duration
            self.Duration.SetValue(dialog.GetDuration())

        dialog.Destroy()

        self.Duration.SetFocus()

    def OnDurationChar(self, event):
        keycode = event.GetKeyCode()
        if keycode in [wx.WXK_RETURN, wx.WXK_TAB]:
            self.Parent.Parent.ProcessEvent(event)
        elif keycode == wx.WXK_ESCAPE:
            self.Duration.SetValue(self.Default)
            self.Parent.Parent.CloseEditControl()
        else:
            event.Skip()

    def SetInsertionPoint(self, i):
        self.Duration.SetInsertionPoint(i)

    def SetFocus(self):
        self.Duration.SetFocus()


class DurationCellEditor(wx.grid.PyGridCellEditor):
    '''
    Grid cell editor that uses DurationCellControl to display an edit button.
    '''
    def __init__(self, table, colname):
        wx.grid.PyGridCellEditor.__init__(self)

        self.Table = table
        self.Colname = colname

    def __del__(self):
        self.CellControl = None

    def Create(self, parent, id, evt_handler):
        self.CellControl = DurationCellControl(parent)
        self.SetControl(self.CellControl)
        if evt_handler:
            self.CellControl.PushEventHandler(evt_handler)

    def BeginEdit(self, row, col, grid):
        self.CellControl.Enable()
        self.CellControl.SetValue(self.Table.GetValueByName(row, self.Colname))
        self.CellControl.SetFocus()

    def EndEditInternal(self, row, col, grid, old_duration):
        duration = self.CellControl.GetValue()
        changed = duration != old_duration
        if changed:
            self.Table.SetValueByName(row, self.Colname, duration)
        self.CellControl.Disable()
        return changed

    if wx.VERSION >= (3, 0, 0):
        def EndEdit(self, row, col, grid, oldval):
            return self.EndEditInternal(row, col, grid, oldval)
    else:
        def EndEdit(self, row, col, grid):
            oldval = self.Table.GetValueByName(row, self.Colname)
            return self.EndEditInternal(row, col, grid, oldval)

    def SetSize(self, rect):
        self.CellControl.SetDimensions(rect.x + 1, rect.y,
                                       rect.width, rect.height,
                                       wx.SIZE_ALLOW_MINUS_ONE)

    def Clone(self):
        return DurationCellEditor(self.Table, self.Colname)