1

#!/usr/bin/env python

     2

# -*- coding: utf-8 -*-

     3

     4

# This file is part of Beremiz, a Integrated Development Environment for

     5

# programming IEC 61131-3 automates supporting plcopen standard and CanFestival.

     6

#

     7

# Copyright (C) 2007: Edouard TISSERANT and Laurent BESSARD

     8

#

     9

# See COPYING file for copyrights details.

    10

#

    11

# This program is free software; you can redistribute it and/or

    12

# modify it under the terms of the GNU General Public License

    13

# as published by the Free Software Foundation; either version 2

    14

# of the License, or (at your option) any later version.

    15

#

    16

# This program is distributed in the hope that it will be useful,

    17

# but WITHOUT ANY WARRANTY; without even the implied warranty of

    18

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

    19

# GNU General Public License for more details.

    20

#

    21

# You should have received a copy of the GNU General Public License

    22

# along with this program; if not, write to the Free Software

    23

# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.

    24

    25

import wx

    26

import wx.grid

    27

    29

class CustomGrid(wx.grid.Grid):

    30

    31

    def __init__(self, *args, **kwargs):

    32

        wx.grid.Grid.__init__(self, *args, **kwargs)

    33

    34

        self.Editable = True

    35

    36

        self.AddButton = None

    37

        self.DeleteButton = None

    38

        self.UpButton = None

    39

        self.DownButton = None

    40

    41

        self.SetFont(wx.Font(12, wx.DEFAULT, wx.NORMAL, wx.NORMAL, False, 'Sans'))

    42

        self.SetLabelFont(wx.Font(10, wx.DEFAULT, wx.NORMAL, wx.NORMAL, False, 'Sans'))

    43

        self.SetSelectionBackground(wx.WHITE)

    44

        self.SetSelectionForeground(wx.BLACK)

    45

        self.DisableDragRowSize()

    46

    47

        self.Bind(wx.grid.EVT_GRID_SELECT_CELL, self.OnSelectCell)

    48

        self.Bind(wx.grid.EVT_GRID_EDITOR_HIDDEN, self.OnEditorHidden)

    49

        self.Bind(wx.EVT_KEY_DOWN, self.OnKeyDown)

    50

    51

    def SetFocus(self):

    52

        if self:

    53

            wx.grid.Grid.SetFocus(self)

    54

    55

    def SetDefaultValue(self, default_value):

    56

        self.DefaultValue = default_value

    57

    58

    def SetEditable(self, editable=True):

    59

        self.Editable = editable

    60

        self.RefreshButtons()

    61

    62

    def SetButtons(self, buttons):

    63

        for name in ["Add", "Delete", "Up", "Down"]:

    64

            button = buttons.get(name, None)

    65

            setattr(self, "%sButton" % name, button)

    66

            if button is not None:

    67

                button.Bind(wx.EVT_BUTTON, getattr(self, "On%sButton" % name))

    68

    69

    def RefreshButtons(self):

    70

        if self:

    71

            rows = self.Table.GetNumberRows()

    72

            row = self.GetGridCursorRow()

    73

            if self.AddButton is not None:

    74

                self.AddButton.Enable(self.Editable)

    75

            if self.DeleteButton is not None:

    76

                self.DeleteButton.Enable(self.Editable and rows > 0)

    77

            if self.UpButton is not None:

    78

                self.UpButton.Enable(self.Editable and row > 0)

    79

            if self.DownButton is not None:

    80

                self.DownButton.Enable(self.Editable and 0 <= row < rows - 1)

    81

    82

    def CloseEditControl(self):

    83

        row, col = self.GetGridCursorRow(), self.GetGridCursorCol()

    84

        if row != -1 and col != -1:

    85

            self.SetGridCursor(row, col)

    86

    87

    def AddRow(self):

    88

        self.CloseEditControl()

    89

        new_row = self.GetGridCursorRow() + 1

    90

        col = max(self.GetGridCursorCol(), 0)

    91

        if getattr(self, "_AddRow", None) is not None:

    92

            new_row = self._AddRow(new_row)

    93

        else:

    94

            self.Table.InsertRow(new_row, self.DefaultValue.copy())

    95

            self.Table.ResetView(self)

    96

        if new_row is not None:

    97

            self.SetSelectedCell(new_row, col)

    98

    99

    def DeleteRow(self):

   100

        self.CloseEditControl()

   101

        row = self.GetGridCursorRow()

   102

        if row >= 0:

   103

            col = self.GetGridCursorCol()

   104

            if getattr(self, "_DeleteRow", None) is not None:

   105

                self._DeleteRow(row)

   106

            else:

   107

                self.Table.RemoveRow(row)

   108

                self.Table.ResetView(self)

   109

            if self.Table.GetNumberRows() > 0:

   110

                self.SetSelectedCell(min(row, self.Table.GetNumberRows() - 1), col)

   111

   112

    def MoveRow(self, row, move):

   113

        self.CloseEditControl()

   114

        col = self.GetGridCursorCol()

   115

        if getattr(self, "_MoveRow", None) is not None:

   116

            new_row = self._MoveRow(row, move)

   117

        else:

   118

            new_row = self.Table.MoveRow(row, move)

   119

            if new_row != row:

   120

                self.Table.ResetView(self)

   121

        if new_row != row:

   122

            self.SetSelectedCell(new_row, col)

   123

   124

    def SetSelectedCell(self, row, col):

   125

        self.SetGridCursor(row, col)

   126

        self.MakeCellVisible(row, col)

   127

        self.RefreshButtons()

   128

   129

    def OnAddButton(self, event):

   130

        self.AddRow()

   131

        self.SetFocus()

   132

        event.Skip()

   133

   134

    def OnDeleteButton(self, event):

   135

        self.DeleteRow()

   136

        self.SetFocus()

   137

        event.Skip()

   138

   139

    def OnUpButton(self, event):

   140

        self.MoveRow(self.GetGridCursorRow(), -1)

   141

        self.SetFocus()

   142

        event.Skip()

   143

   144

    def OnDownButton(self, event):

   145

        self.MoveRow(self.GetGridCursorRow(), 1)

   146

        self.SetFocus()

   147

        event.Skip()

   148

   149

    def OnSelectCell(self, event):

   150

        wx.CallAfter(self.RefreshButtons)

   151

        event.Skip()

   152

   153

    def OnEditorHidden(self, event):

   154

        wx.CallAfter(self.SetFocus)

   155

        event.Skip()

   156

   157

    def OnKeyDown(self, event):

   158

        key_handled = False

   159

        keycode = event.GetKeyCode()

   160

        if keycode == wx.WXK_TAB:

   161

            row = self.GetGridCursorRow()

   162

            col = self.GetGridCursorCol()

   163

            if event.ShiftDown():

   164

                if row < 0 or col == 0:

   165

                    self.Navigate(wx.NavigationKeyEvent.IsBackward)

   166

                    key_handled = True

   167

            elif row < 0 or col == self.Table.GetNumberCols() - 1:

   168

                self.Navigate(wx.NavigationKeyEvent.IsForward)

   169

                key_handled = True

   170

        elif keycode in (wx.WXK_ADD, wx.WXK_NUMPAD_ADD) and self.Editable:

   171

            self.AddRow()

   172

            key_handled = True

   173

        elif keycode in (wx.WXK_DELETE, wx.WXK_NUMPAD_DELETE) and self.Editable:

   174

            self.DeleteRow()

   175

            key_handled = True

   176

        elif keycode == wx.WXK_UP and event.ShiftDown() and self.Editable:

   177

            self.MoveRow(self.GetGridCursorRow(), -1)

   178

            key_handled = True

   179

        elif keycode == wx.WXK_DOWN and event.ShiftDown() and self.Editable:

   180

            self.MoveRow(self.GetGridCursorRow(), 1)

   181

            key_handled = True

   182

        if not key_handled:

   183

            event.Skip()