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

    28

class CustomGrid(wx.grid.Grid):

    29

    30

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

    31

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

    32

    33

        self.Editable = True

    34

    35

        self.AddButton = None

    36

        self.DeleteButton = None

    37

        self.UpButton = None

    38

        self.DownButton = None

    39

    40

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

    41

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

    42

        self.SetSelectionBackground(wx.WHITE)

    43

        self.SetSelectionForeground(wx.BLACK)

    44

        self.DisableDragRowSize()

    45

    46

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

    47

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

    48

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

    49

    50

    def SetFocus(self):

    51

        if self:

    52

            wx.grid.Grid.SetFocus(self)

    53

    54

    def SetDefaultValue(self, default_value):

    55

        self.DefaultValue = default_value

    56

    57

    def SetEditable(self, editable=True):

    58

        self.Editable = editable

    59

        self.RefreshButtons()

    60

    61

    def SetButtons(self, buttons):

    62

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

    63

            button = buttons.get(name, None)

    64

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

    65

            if button is not None:

    66

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

    67

    68

    def RefreshButtons(self):

    69

        if self:

    70

            rows = self.Table.GetNumberRows()

    71

            row = self.GetGridCursorRow()

    72

            if self.AddButton is not None:

    73

                self.AddButton.Enable(self.Editable)

    74

            if self.DeleteButton is not None:

    75

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

    76

            if self.UpButton is not None:

    77

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

    78

            if self.DownButton is not None:

    79

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

    80

    81

    def CloseEditControl(self):

    82

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

    83

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

    84

            self.SetGridCursor(row, col)

    85

    86

    def AddRow(self):

    87

        self.CloseEditControl()

    88

        new_row = self.GetGridCursorRow() + 1

    89

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

    90

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

    91

            new_row = self._AddRow(new_row)

    92

        else:

    93

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

    94

            self.Table.ResetView(self)

    95

        if new_row is not None:

    96

            self.SetSelectedCell(new_row, col)

    97

    98

    def DeleteRow(self):

    99

        self.CloseEditControl()

   100

        row = self.GetGridCursorRow()

   101

        if row >= 0:

   102

            col = self.GetGridCursorCol()

   103

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

   104

                self._DeleteRow(row)

   105

            else:

   106

                self.Table.RemoveRow(row)

   107

                self.Table.ResetView(self)

   108

            if self.Table.GetNumberRows() > 0:

   109

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

   110

   111

    def MoveRow(self, row, move):

   112

        self.CloseEditControl()

   113

        col = self.GetGridCursorCol()

   114

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

   115

            new_row = self._MoveRow(row, move)

   116

        else:

   117

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

   118

            if new_row != row:

   119

                self.Table.ResetView(self)

   120

        if new_row != row:

   121

            self.SetSelectedCell(new_row, col)

   122

   123

    def SetSelectedCell(self, row, col):

   124

        self.SetGridCursor(row, col)

   125

        self.MakeCellVisible(row, col)

   126

        self.RefreshButtons()

   127

   128

    def OnAddButton(self, event):

   129

        self.AddRow()

   130

        self.SetFocus()

   131

        event.Skip()

   132

   133

    def OnDeleteButton(self, event):

   134

        self.DeleteRow()

   135

        self.SetFocus()

   136

        event.Skip()

   137

   138

    def OnUpButton(self, event):

   139

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

   140

        self.SetFocus()

   141

        event.Skip()

   142

   143

    def OnDownButton(self, event):

   144

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

   145

        self.SetFocus()

   146

        event.Skip()

   147

   148

    def OnSelectCell(self, event):

   149

        wx.CallAfter(self.RefreshButtons)

   150

        event.Skip()

   151

   152

    def OnEditorHidden(self, event):

   153

        wx.CallAfter(self.SetFocus)

   154

        event.Skip()

   155

   156

    def OnKeyDown(self, event):

   157

        key_handled = False

   158

        keycode = event.GetKeyCode()

   159

        if keycode == wx.WXK_TAB:

   160

            row = self.GetGridCursorRow()

   161

            col = self.GetGridCursorCol()

   162

            if event.ShiftDown():

   163

                if row < 0 or col == 0:

   164

                    self.Navigate(wx.NavigationKeyEvent.IsBackward)

   165

                    key_handled = True

   166

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

   167

                self.Navigate(wx.NavigationKeyEvent.IsForward)

   168

                key_handled = True

   169

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

   170

            self.AddRow()

   171

            key_handled = True

   172

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

   173

            self.DeleteRow()

   174

            key_handled = True

   175

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

   176

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

   177

            key_handled = True

   178

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

   179

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

   180

            key_handled = True

   181

        if not key_handled:

   182

            event.Skip()