split the variable editor panel into its own file
authorb.taylor@willowglen.ca
Wed, 02 Sep 2009 12:39:52 -0600
changeset 418 a06221a0930b
parent 417 218142afdb53
child 419 8f97ed01a6a6
split the variable editor panel into its own file
PLCOpenEditor.py
VariablePanel.py
--- a/PLCOpenEditor.py	Wed Sep 02 12:38:06 2009 -0600
+++ b/PLCOpenEditor.py	Wed Sep 02 12:39:52 2009 -0600
@@ -108,7 +108,7 @@
 from RessourceEditor import *
 from DataTypeEditor import *
 from PLCControler import *
-from plcopen.structures import LOCATIONDATATYPES
+from VariablePanel import VariablePanel
 
 # Define PLCOpenEditor controls id
 [ID_PLCOPENEDITOR, ID_PLCOPENEDITORTREENOTEBOOK,
@@ -3847,773 +3847,6 @@
             panel.ClearErrors()
 
 #-------------------------------------------------------------------------------
-#                            Variables Editor Panel
-#-------------------------------------------------------------------------------
-
-def GetVariableTableColnames(location):
-    _ = lambda x : x
-    if location:
-    	return ["#", _("Name"), _("Class"), _("Type"), _("Location"), _("Initial Value"), _("Retain"), _("Constant")]
-    return ["#", _("Name"), _("Class"), _("Type"), _("Initial Value"), _("Retain"), _("Constant")]
-
-def GetAlternativeOptions():
-    _ = lambda x : x
-    return [_("Yes"), _("No")]
-ALTERNATIVE_OPTIONS_DICT = dict([(_(option), option) for option in GetAlternativeOptions()])
-
-def GetFilterChoiceTransfer():
-    _ = lambda x : x
-    return {_("All"): _("All"), _("Interface"): _("Interface"), 
-            _("   Input"): _("Input"), _("   Output"): _("Output"), _("   InOut"): _("InOut"), 
-            _("   External"): _("External"), _("Variables"): _("Variables"), _("   Local"): _("Local"),
-            _("   Temp"): _("Temp"), _("Global"): _("Global")}#, _("Access") : _("Access")}
-VARIABLE_CLASSES_DICT = dict([(_(_class), _class) for _class in GetFilterChoiceTransfer().itervalues()])
-
-class VariableTable(wx.grid.PyGridTableBase):
-    
-    """
-    A custom wx.grid.Grid Table using user supplied data
-    """
-    def __init__(self, parent, data, colnames):
-        # The base class must be initialized *first*
-        wx.grid.PyGridTableBase.__init__(self)
-        self.data = data
-        self.old_value = None
-        self.colnames = colnames
-        self.Errors = {}
-        self.Parent = parent
-        # XXX
-        # we need to store the row length and collength to
-        # see if the table has changed size
-        self._rows = self.GetNumberRows()
-        self._cols = self.GetNumberCols()
-    
-    def GetNumberCols(self):
-        return len(self.colnames)
-        
-    def GetNumberRows(self):
-        return len(self.data)
-
-    def GetColLabelValue(self, col, translate=True):
-        if col < len(self.colnames):
-            if translate:
-                return _(self.colnames[col])
-            return self.colnames[col]
-
-    def GetRowLabelValues(self, row, translate=True):
-        return row
-
-    def GetValue(self, row, col):
-        if row < self.GetNumberRows():
-            if col == 0:
-                return self.data[row]["Number"]
-            colname = self.GetColLabelValue(col, False)
-            value = str(self.data[row].get(colname, ""))
-            if colname in ["Class", "Retain", "Constant"]:
-                return _(value)
-            return value
-    
-    def SetValue(self, row, col, value):
-        if col < len(self.colnames):
-            colname = self.GetColLabelValue(col, False)
-            if colname == "Name":
-                self.old_value = self.data[row][colname]
-            elif colname == "Class":
-                value = VARIABLE_CLASSES_DICT[value]
-            elif colname in ["Retain", "Constant"]:
-                value = ALTERNATIVE_OPTIONS_DICT[value]
-            self.data[row][colname] = value
-    
-    def GetValueByName(self, row, colname):
-        if row < self.GetNumberRows():
-            return self.data[row].get(colname)
-
-    def SetValueByName(self, row, colname, value):
-        if row < self.GetNumberRows():
-            self.data[row][colname] = value
-
-    def GetOldValue(self):
-        return self.old_value
-    
-    def ResetView(self, grid):
-        """
-        (wx.grid.Grid) -> Reset the grid view.   Call this to
-        update the grid if rows and columns have been added or deleted
-        """
-        grid.BeginBatch()
-        for current, new, delmsg, addmsg in [
-            (self._rows, self.GetNumberRows(), wx.grid.GRIDTABLE_NOTIFY_ROWS_DELETED, wx.grid.GRIDTABLE_NOTIFY_ROWS_APPENDED),
-            (self._cols, self.GetNumberCols(), wx.grid.GRIDTABLE_NOTIFY_COLS_DELETED, wx.grid.GRIDTABLE_NOTIFY_COLS_APPENDED),
-        ]:
-            if new < current:
-                msg = wx.grid.GridTableMessage(self,delmsg,new,current-new)
-                grid.ProcessTableMessage(msg)
-            elif new > current:
-                msg = wx.grid.GridTableMessage(self,addmsg,new-current)
-                grid.ProcessTableMessage(msg)
-                self.UpdateValues(grid)
-        grid.EndBatch()
-
-        self._rows = self.GetNumberRows()
-        self._cols = self.GetNumberCols()
-        # update the column rendering scheme
-        self._updateColAttrs(grid)
-
-        # update the scrollbars and the displayed part of the grid
-        grid.AdjustScrollbars()
-        grid.ForceRefresh()
-
-    def UpdateValues(self, grid):
-        """Update all displayed values"""
-        # This sends an event to the grid table to update all of the values
-        msg = wx.grid.GridTableMessage(self, wx.grid.GRIDTABLE_REQUEST_VIEW_GET_VALUES)
-        grid.ProcessTableMessage(msg)
-
-    def _updateColAttrs(self, grid):
-        """
-        wx.grid.Grid -> update the column attributes to add the
-        appropriate renderer given the column name.
-
-        Otherwise default to the default renderer.
-        """
-        
-        for row in range(self.GetNumberRows()):
-            for col in range(self.GetNumberCols()):
-                editor = None
-                renderer = None
-                colname = self.GetColLabelValue(col, False)
-                if col != 0 and self.GetValueByName(row, "Edit"):
-                    grid.SetReadOnly(row, col, False)
-                    if colname == "Name":
-                        if self.Parent.PouIsUsed and self.GetValueByName(row, "Class") in ["Input", "Output", "InOut"]:
-                            grid.SetReadOnly(row, col, True)
-                        else:
-                            editor = wx.grid.GridCellTextEditor()
-                            renderer = wx.grid.GridCellStringRenderer()
-                    elif colname == "Initial Value":
-                        editor = wx.grid.GridCellTextEditor()
-                        renderer = wx.grid.GridCellStringRenderer()
-                    elif colname == "Location":
-                        if self.GetValueByName(row, "Class") in ["Local", "Global"]:
-                            editor = wx.grid.GridCellTextEditor()
-                            renderer = wx.grid.GridCellStringRenderer()
-                        else:
-                            grid.SetReadOnly(row, col, True)
-                    elif colname == "Class":
-                        if len(self.Parent.ClassList) == 1 or self.Parent.PouIsUsed and self.GetValueByName(row, "Class") in ["Input", "Output", "InOut"]:
-                            grid.SetReadOnly(row, col, True)
-                        else:
-                            editor = wx.grid.GridCellChoiceEditor()
-                            excluded = []
-                            if self.Parent.PouIsUsed:
-                                excluded.extend(["Input","Output","InOut"])
-                            if self.Parent.IsFunctionBlockType(self.data[row]["Type"]):
-                                excluded.extend(["Local","Temp"])
-                            editor.SetParameters(",".join([_(choice) for choice in self.Parent.ClassList if choice not in excluded]))
-                    elif colname in ["Retain", "Constant"]:
-                        editor = wx.grid.GridCellChoiceEditor()
-                        editor.SetParameters(",".join(map(_, self.Parent.OptionList)))
-                    elif colname == "Type":
-                        editor = wx.grid.GridCellTextEditor()
-                else:
-                    grid.SetReadOnly(row, col, True)
-                
-                grid.SetCellEditor(row, col, editor)
-                grid.SetCellRenderer(row, col, renderer)
-                
-                if row in self.Errors and self.Errors[row][0] == colname.lower():
-                    grid.SetCellBackgroundColour(row, col, wx.Colour(255, 255, 0))
-                    grid.SetCellTextColour(row, col, wx.RED)
-                    grid.MakeCellVisible(row, col)
-                else:
-                    grid.SetCellTextColour(row, col, wx.BLACK)
-                    grid.SetCellBackgroundColour(row, col, wx.WHITE)
-    
-    def SetData(self, data):
-        self.data = data
-    
-    def GetData(self):
-        return self.data
-    
-    def GetCurrentIndex(self):
-        return self.CurrentIndex
-    
-    def SetCurrentIndex(self, index):
-        self.CurrentIndex = index
-    
-    def AppendRow(self, row_content):
-        self.data.append(row_content)
-
-    def RemoveRow(self, row_index):
-        self.data.pop(row_index)
-
-    def GetRow(self, row_index):
-        return self.data[row_index]
-
-    def Empty(self):
-        self.data = []
-        self.editors = []
-
-    def AddError(self, infos):
-        self.Errors[infos[0]] = infos[1:]
-
-    def ClearErrors(self):
-        self.Errors = {}
-
-class VariableDropTarget(wx.TextDropTarget):
-    
-    def __init__(self, parent):
-        wx.TextDropTarget.__init__(self)
-        self.ParentWindow = parent
-    
-    def OnDropText(self, x, y, data):
-        x, y = self.ParentWindow.VariablesGrid.CalcUnscrolledPosition(x, y)
-        col = self.ParentWindow.VariablesGrid.XToCol(x)
-        row = self.ParentWindow.VariablesGrid.YToRow(y - self.ParentWindow.VariablesGrid.GetColLabelSize())
-        if col != wx.NOT_FOUND and row != wx.NOT_FOUND:
-            if self.ParentWindow.Table.GetColLabelValue(col, False) != "Location":
-                return
-            message = None
-            if not self.ParentWindow.Table.GetValueByName(row, "Edit"):
-                message = _("Can't affect a location to a function block instance")
-            elif self.ParentWindow.Table.GetValueByName(row, "Class") not in ["Local", "Global"]:
-                message = _("Can affect a location only to local or global variables")
-            else:
-                try:
-                    values = eval(data)    
-                except:
-                    message = _("Invalid value \"%s\" for location")%data
-                    values = None
-                if not isinstance(values, TupleType):
-                    message = _("Invalid value \"%s\" for location")%data
-                    values = None
-                if values is not None and values[1] == "location":
-                    location = values[0]
-                    variable_type = self.ParentWindow.Table.GetValueByName(row, "Type")
-                    base_type = self.ParentWindow.Controler.GetBaseType(variable_type)
-                    message = None
-                    if location.startswith("%"):
-                        if base_type != values[2]:
-                            message = _("Incompatible data types between \"%s\" and \"%s\"")%(values[2], variable_type)
-                        else:
-                            self.ParentWindow.Table.SetValue(row, col, location)
-                            self.ParentWindow.Table.ResetView(self.ParentWindow.VariablesGrid)
-                            self.ParentWindow.SaveValues()
-                    else:
-                        if location[0].isdigit() and base_type != "BOOL":
-                            message = _("Incompatible size of data between \"%s\" and \"BOOL\"")%location
-                        elif location[0] not in LOCATIONDATATYPES:
-                            message = _("Unrecognized data size \"%s\"")%location[0]
-                        elif base_type not in LOCATIONDATATYPES[location[0]]:
-                            message = _("Incompatible size of data between \"%s\" and \"%s\"")%(location, variable_type)
-                        else:
-                            dialog = wx.SingleChoiceDialog(self.ParentWindow, _("Select a variable class:"), _("Variable class"), ["Input", "Output", "Memory"], wx.OK|wx.CANCEL)
-                            if dialog.ShowModal() == wx.ID_OK:
-                                selected = dialog.GetSelection()
-                                if selected == 0:
-                                    location = "%I" + location
-                                elif selected == 1:
-                                    location = "%Q" + location
-                                else:
-                                    location = "%M" + location
-                                self.ParentWindow.Table.SetValue(row, col, location)
-                                self.ParentWindow.Table.ResetView(self.ParentWindow.VariablesGrid)
-                                self.ParentWindow.SaveValues()
-                            dialog.Destroy()
-            if message is not None:
-                wx.CallAfter(self.ShowMessage, message)
-            
-    def ShowMessage(self, message):
-        message = wx.MessageDialog(self.ParentWindow, message, _("Error"), wx.OK|wx.ICON_ERROR)
-        message.ShowModal()
-        message.Destroy()
-
-[ID_VARIABLEEDITORPANEL, ID_VARIABLEEDITORPANELVARIABLESGRID, 
- ID_VARIABLEEDITORCONTROLPANEL, ID_VARIABLEEDITORPANELRETURNTYPE, 
- ID_VARIABLEEDITORPANELCLASSFILTER, ID_VARIABLEEDITORPANELADDBUTTON, 
- ID_VARIABLEEDITORPANELDELETEBUTTON, ID_VARIABLEEDITORPANELUPBUTTON, 
- ID_VARIABLEEDITORPANELDOWNBUTTON, ID_VARIABLEEDITORPANELSTATICTEXT1, 
- ID_VARIABLEEDITORPANELSTATICTEXT2, ID_VARIABLEEDITORPANELSTATICTEXT3,
-] = [wx.NewId() for _init_ctrls in range(12)]
-
-class VariablePanel(wx.Panel):
-    
-    if wx.VERSION < (2, 6, 0):
-        def Bind(self, event, function, id = None):
-            if id is not None:
-                event(self, id, function)
-            else:
-                event(self, function)
-    
-    def _init_coll_MainSizer_Items(self, parent):
-        parent.AddWindow(self.VariablesGrid, 0, border=0, flag=wx.GROW)
-        parent.AddWindow(self.ControlPanel, 0, border=5, flag=wx.GROW|wx.ALL)
-    
-    def _init_coll_MainSizer_Growables(self, parent):
-        parent.AddGrowableCol(0)
-        parent.AddGrowableRow(0)
-    
-    def _init_coll_ControlPanelSizer_Items(self, parent):
-        parent.AddSizer(self.ChoicePanelSizer, 0, border=0, flag=wx.GROW)
-        parent.AddSizer(self.ButtonPanelSizer, 0, border=0, flag=wx.ALIGN_CENTER)
-
-    def _init_coll_ControlPanelSizer_Growables(self, parent):
-        parent.AddGrowableCol(0)
-        parent.AddGrowableRow(0)
-        parent.AddGrowableRow(1)
-
-    def _init_coll_ChoicePanelSizer_Items(self, parent):
-        parent.AddWindow(self.staticText1, 0, border=0, flag=wx.ALIGN_BOTTOM)
-        parent.AddWindow(self.ReturnType, 0, border=0, flag=0)
-        parent.AddWindow(self.staticText2, 0, border=0, flag=wx.ALIGN_BOTTOM)
-        parent.AddWindow(self.ClassFilter, 0, border=0, flag=0)
-
-    def _init_coll_ButtonPanelSizer_Items(self, parent):
-        parent.AddWindow(self.UpButton, 0, border=0, flag=0)
-        parent.AddWindow(self.AddButton, 0, border=0, flag=0)
-        parent.AddWindow(self.DownButton, 0, border=0, flag=0)
-        parent.AddWindow(self.DeleteButton, 0, border=0, flag=0)
-        
-    def _init_coll_ButtonPanelSizer_Growables(self, parent):
-        parent.AddGrowableCol(0)
-        parent.AddGrowableCol(1)
-        parent.AddGrowableCol(2)
-        parent.AddGrowableCol(3)
-        parent.AddGrowableRow(0)
-
-    def _init_sizers(self):
-        self.MainSizer = wx.FlexGridSizer(cols=2, hgap=10, rows=1, vgap=0)
-        self.ControlPanelSizer = wx.FlexGridSizer(cols=1, hgap=0, rows=2, vgap=5)
-        self.ChoicePanelSizer = wx.GridSizer(cols=1, hgap=5, rows=4, vgap=5)
-        self.ButtonPanelSizer = wx.FlexGridSizer(cols=2, hgap=5, rows=2, vgap=5)
-        
-        self._init_coll_MainSizer_Items(self.MainSizer)
-        self._init_coll_MainSizer_Growables(self.MainSizer)
-        self._init_coll_ControlPanelSizer_Items(self.ControlPanelSizer)
-        self._init_coll_ControlPanelSizer_Growables(self.ControlPanelSizer)
-        self._init_coll_ChoicePanelSizer_Items(self.ChoicePanelSizer)
-        self._init_coll_ButtonPanelSizer_Items(self.ButtonPanelSizer)
-        self._init_coll_ButtonPanelSizer_Growables(self.ButtonPanelSizer)
-        
-        self.SetSizer(self.MainSizer)
-        self.ControlPanel.SetSizer(self.ControlPanelSizer)
-
-    def _init_ctrls(self, prnt):
-        wx.Panel.__init__(self, id=ID_VARIABLEEDITORPANEL,
-              name='VariableEditorPanel', parent=prnt, pos=wx.Point(0, 0),
-              size=wx.Size(0, 0), style=wx.TAB_TRAVERSAL)
-
-        self.VariablesGrid = wx.grid.Grid(id=ID_VARIABLEEDITORPANELVARIABLESGRID,
-              name='VariablesGrid', parent=self, pos=wx.Point(0, 0), 
-              size=wx.Size(0, 0), style=wx.VSCROLL)
-        self.VariablesGrid.SetFont(wx.Font(12, 77, wx.NORMAL, wx.NORMAL, False,
-              'Sans'))
-        self.VariablesGrid.SetLabelFont(wx.Font(10, 77, wx.NORMAL, wx.NORMAL,
-              False, 'Sans'))
-        self.VariablesGrid.SetSelectionBackground(wx.WHITE)
-        self.VariablesGrid.SetSelectionForeground(wx.BLACK)
-        if wx.VERSION >= (2, 6, 0):
-            self.VariablesGrid.Bind(wx.grid.EVT_GRID_CELL_CHANGE, self.OnVariablesGridCellChange)
-            self.VariablesGrid.Bind(wx.grid.EVT_GRID_SELECT_CELL, self.OnVariablesGridSelectCell)
-            self.VariablesGrid.Bind(wx.grid.EVT_GRID_CELL_LEFT_CLICK, self.OnVariablesGridCellLeftClick)
-            self.VariablesGrid.Bind(wx.grid.EVT_GRID_EDITOR_SHOWN, self.OnVariablesGridEditorShown)
-            #self.VariablesGrid.Bind(wx.EVT_KEY_DOWN, self.OnChar)
-        else:
-            wx.grid.EVT_GRID_CELL_CHANGE(self.VariablesGrid, self.OnVariablesGridCellChange)
-            wx.grid.EVT_GRID_SELECT_CELL(self.VariablesGrid, self.OnVariablesGridSelectCell)
-            wx.grid.EVT_GRID_CELL_LEFT_CLICK(self.VariablesGrid, self.OnVariablesGridCellLeftClick)
-            wx.grid.EVT_GRID_EDITOR_SHOWN(self.VariablesGrid, self.OnVariablesGridEditorShown)
-            #wx.EVT_KEY_DOWN(self.VariablesGrid, self.OnChar)
-        self.VariablesGrid.SetDropTarget(VariableDropTarget(self))
-        
-        self.ControlPanel = wx.ScrolledWindow(id=ID_VARIABLEEDITORCONTROLPANEL,
-              name='ControlPanel', parent=self, pos=wx.Point(0, 0),
-              size=wx.Size(0, 0), style=wx.TAB_TRAVERSAL)
-        self.ControlPanel.SetScrollRate(0, 10)
-        
-        self.staticText1 = wx.StaticText(id=ID_VARIABLEEDITORPANELSTATICTEXT1,
-              label=_('Return Type:'), name='staticText1', parent=self.ControlPanel,
-              pos=wx.Point(0, 0), size=wx.Size(145, 17), style=0)
-
-        self.ReturnType = wx.ComboBox(id=ID_VARIABLEEDITORPANELRETURNTYPE,
-              name='ReturnType', parent=self.ControlPanel, pos=wx.Point(0, 0),
-              size=wx.Size(145, 28), style=wx.CB_READONLY)
-        self.Bind(wx.EVT_COMBOBOX, self.OnReturnTypeChanged, id=ID_VARIABLEEDITORPANELRETURNTYPE)
-
-        self.staticText2 = wx.StaticText(id=ID_VARIABLEEDITORPANELSTATICTEXT2,
-              label=_('Class Filter:'), name='staticText2', parent=self.ControlPanel,
-              pos=wx.Point(0, 0), size=wx.Size(145, 17), style=0)
-
-        self.ClassFilter = wx.ComboBox(id=ID_VARIABLEEDITORPANELCLASSFILTER,
-              name='ClassFilter', parent=self.ControlPanel, pos=wx.Point(0, 0),
-              size=wx.Size(145, 28), style=wx.CB_READONLY)
-        self.Bind(wx.EVT_COMBOBOX, self.OnClassFilter, id=ID_VARIABLEEDITORPANELCLASSFILTER)
-
-        self.AddButton = wx.Button(id=ID_VARIABLEEDITORPANELADDBUTTON, label=_('Add'),
-              name='AddButton', parent=self.ControlPanel, pos=wx.Point(0, 0),
-              size=wx.DefaultSize, style=0)
-        self.Bind(wx.EVT_BUTTON, self.OnAddButton, id=ID_VARIABLEEDITORPANELADDBUTTON)
-
-        self.DeleteButton = wx.Button(id=ID_VARIABLEEDITORPANELDELETEBUTTON, label=_('Delete'),
-              name='DeleteButton', parent=self.ControlPanel, pos=wx.Point(0, 0),
-              size=wx.DefaultSize, style=0)
-        self.Bind(wx.EVT_BUTTON, self.OnDeleteButton, id=ID_VARIABLEEDITORPANELDELETEBUTTON)
-
-        self.UpButton = wx.Button(id=ID_VARIABLEEDITORPANELUPBUTTON, label='^',
-              name='UpButton', parent=self.ControlPanel, pos=wx.Point(0, 0),
-              size=wx.Size(32, 32), style=0)
-        self.Bind(wx.EVT_BUTTON, self.OnUpButton, id=ID_VARIABLEEDITORPANELUPBUTTON)
-
-        self.DownButton = wx.Button(id=ID_VARIABLEEDITORPANELDOWNBUTTON, label='v',
-              name='DownButton', parent=self.ControlPanel, pos=wx.Point(0, 0),
-              size=wx.Size(32, 32), style=0)
-        self.Bind(wx.EVT_BUTTON, self.OnDownButton, id=ID_VARIABLEEDITORPANELDOWNBUTTON)
-
-        self._init_sizers()
-
-    def __init__(self, parent, window, controler, element_type):
-        self._init_ctrls(parent)
-        self.ParentWindow = window
-        self.Controler = controler
-        self.ElementType = element_type
-        
-        self.Filter = "All"
-        self.FilterChoices = []
-        self.FilterChoiceTransfer = GetFilterChoiceTransfer()
-        
-        if element_type in ["config", "resource"]:
-            self.DefaultTypes = {"All" : "Global"}
-            self.DefaultValue = {"Name" : "", "Class" : "", "Type" : "INT", "Location" : "", "Initial Value" : "", "Retain" : "No", "Constant" : "No", "Edit" : True}
-        else:
-            self.DefaultTypes = {"All" : "Local", "Interface" : "Input", "Variables" : "Local"}
-            self.DefaultValue = {"Name" : "", "Class" : "", "Type" : "INT", "Location" : "", "Initial Value" : "", "Retain" : "No", "Constant" : "No", "Edit" : True}
-        if element_type in ["config", "resource"] or element_type in ["program", "transition", "action"]:
-            self.Table = VariableTable(self, [], GetVariableTableColnames(True))
-            if element_type not in ["config", "resource"]:
-                self.FilterChoices = ["All", "Interface", "   Input", "   Output", "   InOut", "   External", "Variables", "   Local", "   Temp"]#,"Access"]
-            else:
-                self.FilterChoices = ["All", "Global"]#,"Access"]
-            self.ColSizes = [40, 80, 70, 80, 80, 80, 60, 70]
-            self.ColAlignements = [wx.ALIGN_CENTER, wx.ALIGN_LEFT, wx.ALIGN_LEFT, wx.ALIGN_LEFT, wx.ALIGN_LEFT, wx.ALIGN_LEFT, wx.ALIGN_CENTER, wx.ALIGN_CENTER]
-        else:
-            self.Table = VariableTable(self, [], GetVariableTableColnames(False))
-            if element_type == "function":
-                self.FilterChoices = ["All", "Interface", "   Input", "   Output", "   InOut", "Variables", "   Local", "   Temp"]
-            else:
-                self.FilterChoices = ["All", "Interface", "   Input", "   Output", "   InOut", "   External", "Variables", "   Local", "   Temp"]
-            self.ColSizes = [40, 120, 70, 80, 120, 60, 70]
-            self.ColAlignements = [wx.ALIGN_CENTER, wx.ALIGN_LEFT, wx.ALIGN_LEFT, wx.ALIGN_LEFT, wx.ALIGN_LEFT, wx.ALIGN_CENTER, wx.ALIGN_CENTER]
-        for choice in self.FilterChoices:
-            self.ClassFilter.Append(_(choice))
-        reverse_transfer = {}
-        for filter, choice in self.FilterChoiceTransfer.items():
-            reverse_transfer[choice] = filter
-        self.ClassFilter.SetStringSelection(_(reverse_transfer[self.Filter]))
-        self.RefreshTypeList()
-
-        self.OptionList = GetAlternativeOptions()
-        
-        if element_type == "function":
-            for base_type in self.Controler.GetBaseTypes():
-                self.ReturnType.Append(base_type)
-            self.ReturnType.Enable(True)
-        else:
-            self.ReturnType.Enable(False)
-            self.staticText1.Hide()
-            self.ReturnType.Hide()
-            
-        self.VariablesGrid.SetTable(self.Table)
-        self.VariablesGrid.SetRowLabelSize(0)
-        for col in range(self.Table.GetNumberCols()):
-            attr = wx.grid.GridCellAttr()
-            attr.SetAlignment(self.ColAlignements[col], wx.ALIGN_CENTRE)
-            self.VariablesGrid.SetColAttr(col, attr)
-            self.VariablesGrid.SetColMinimalWidth(col, self.ColSizes[col])
-            self.VariablesGrid.AutoSizeColumn(col, False)
-    
-    def SetTagName(self, tagname):
-        self.TagName = tagname
-    
-    def IsFunctionBlockType(self, name):
-        bodytype = self.Controler.GetEditedElementBodyType(self.TagName, self.ParentWindow.Debug)
-        pouname, poutype = self.Controler.GetEditedElementType(self.TagName, self.ParentWindow.Debug)
-        if poutype != "function" and bodytype in ["ST", "IL"]:
-            return False
-        else:
-            return name in self.Controler.GetFunctionBlockTypes(self.TagName, self.ParentWindow.Debug)
-    
-    def RefreshView(self):
-        self.PouNames = self.Controler.GetProjectPouNames(self.ParentWindow.Debug)
-        
-        words = self.TagName.split("::")
-        if self.ElementType == "config":
-            self.PouIsUsed = False
-            returnType = None
-            self.Values = self.Controler.GetConfigurationGlobalVars(words[1], self.ParentWindow.Debug)
-        elif self.ElementType == "resource":
-            self.PouIsUsed = False
-            returnType = None
-            self.Values = self.Controler.GetConfigurationResourceGlobalVars(words[1], words[2], self.ParentWindow.Debug)
-        else:
-            self.PouIsUsed = self.Controler.PouIsUsed(words[1], self.ParentWindow.Debug)
-            returnType = self.Controler.GetEditedElementInterfaceReturnType(self.TagName, self.ParentWindow.Debug)
-            self.Values = self.Controler.GetEditedElementInterfaceVars(self.TagName, self.ParentWindow.Debug)
-        
-        if returnType and self.ReturnType.IsEnabled():
-            self.ReturnType.SetStringSelection(returnType)
-        
-        self.RefreshValues()
-        self.RefreshButtons()
-    
-    def OnReturnTypeChanged(self, event):
-        words = self.TagName.split("::")
-        self.Controler.SetPouInterfaceReturnType(words[1], self.ReturnType.GetStringSelection())
-        self.Controler.BufferProject()
-        self.ParentWindow.RefreshEditor(variablepanel = False)
-        self.ParentWindow.RefreshTitle()
-        self.ParentWindow.RefreshEditMenu()
-        self.ParentWindow.RefreshInstancesTree()
-        self.ParentWindow.RefreshLibraryTree()
-        event.Skip()
-    
-    def OnClassFilter(self, event):
-        self.Filter = self.FilterChoiceTransfer[self.ClassFilter.GetStringSelection()]
-        self.RefreshTypeList()
-        self.RefreshValues()
-        self.RefreshButtons()
-        event.Skip()
-
-    def RefreshTypeList(self):
-        if self.Filter == "All":
-            self.ClassList = [self.FilterChoiceTransfer[choice] for choice in self.FilterChoices if self.FilterChoiceTransfer[choice] not in ["All","Interface","Variables"]]
-        elif self.Filter == "Interface":
-            self.ClassList = ["Input","Output","InOut","External"]
-        elif self.Filter == "Variables":
-            self.ClassList = ["Local","Temp"]
-        else:
-            self.ClassList = [self.Filter]
-
-    def RefreshButtons(self):
-        if getattr(self, "Table", None):
-            table_length = len(self.Table.data)
-            row_class = None
-            row_edit = True
-            if table_length > 0:
-                row = self.VariablesGrid.GetGridCursorRow()
-                row_edit = self.Table.GetValueByName(row, "Edit")
-                if self.PouIsUsed:
-                    row_class = self.Table.GetValueByName(row, "Class")
-            self.AddButton.Enable(not self.PouIsUsed or self.Filter not in ["Interface", "Input", "Output", "InOut"])
-            self.DeleteButton.Enable(table_length > 0 and row_edit and row_class not in ["Input", "Output", "InOut"])
-            self.UpButton.Enable(table_length > 0 and self.Filter == "All" and row_class not in ["Input", "Output", "InOut"])
-            self.DownButton.Enable(table_length > 0 and self.Filter == "All" and row_class not in ["Input", "Output", "InOut"])
-
-    def OnAddButton(self, event):
-        new_row = self.DefaultValue.copy()
-        if self.Filter in self.DefaultTypes:
-            new_row["Class"] = self.DefaultTypes[self.Filter]
-        else:
-            new_row["Class"] = self.Filter
-        if self.Filter == "All" and len(self.Values) > 0:
-            row_index = self.VariablesGrid.GetGridCursorRow() + 1
-            self.Values.insert(row_index, new_row)
-        else:
-            row_index = -1
-            self.Values.append(new_row)
-        self.SaveValues()
-        self.RefreshValues(row_index)
-        self.RefreshButtons()
-        event.Skip()
-
-    def OnDeleteButton(self, event):
-        row = self.Table.GetRow(self.VariablesGrid.GetGridCursorRow())
-        self.Values.remove(row)
-        self.SaveValues()
-        self.RefreshValues()
-        self.RefreshButtons()
-        event.Skip()
-
-    def OnUpButton(self, event):
-        self.MoveValue(self.VariablesGrid.GetGridCursorRow(), -1)
-        self.RefreshButtons()
-        event.Skip()
-
-    def OnDownButton(self, event):
-        self.MoveValue(self.VariablesGrid.GetGridCursorRow(), 1)
-        self.RefreshButtons()
-        event.Skip()
-
-    def OnVariablesGridCellChange(self, event):
-        row, col = event.GetRow(), event.GetCol()
-        colname = self.Table.GetColLabelValue(col)
-        value = self.Table.GetValue(row, col)
-        if colname == "Name" and value != "":
-            if not TestIdentifier(value):
-                message = wx.MessageDialog(self, _("\"%s\" is not a valid identifier!")%value, _("Error"), wx.OK|wx.ICON_ERROR)
-                message.ShowModal()
-                message.Destroy()
-                event.Veto()
-            elif value.upper() in IEC_KEYWORDS:
-                message = wx.MessageDialog(self, _("\"%s\" is a keyword. It can't be used!")%value, _("Error"), wx.OK|wx.ICON_ERROR)
-                message.ShowModal()
-                message.Destroy()
-                event.Veto()
-            elif value.upper() in self.PouNames:
-                message = wx.MessageDialog(self, _("A pou with \"%s\" as name exists!")%value, _("Error"), wx.OK|wx.ICON_ERROR)
-                message.ShowModal()
-                message.Destroy()
-                event.Veto()
-            elif value.upper() in [var["Name"].upper() for var in self.Values if var != self.Table.data[row]]:
-                message = wx.MessageDialog(self, _("A variable with \"%s\" as name already exists in this pou!")%value, _("Error"), wx.OK|wx.ICON_ERROR)
-                message.ShowModal()
-                message.Destroy()
-                event.Veto()
-            else:
-                self.SaveValues(False)
-                old_value = self.Table.GetOldValue()
-                if old_value != "":
-                    self.Controler.UpdateEditedElementUsedVariable(self.TagName, old_value, value)
-                self.Controler.BufferProject()
-                self.ParentWindow.RefreshEditor(variablepanel = False)
-                self.ParentWindow.RefreshTitle()
-                self.ParentWindow.RefreshEditMenu()
-                self.ParentWindow.RefreshInstancesTree()
-                self.ParentWindow.RefreshLibraryTree()
-                event.Skip()
-        else:
-            self.SaveValues()
-            if colname == "Class":
-                self.Table.ResetView(self.VariablesGrid)
-            event.Skip()
-    
-    def OnVariablesGridEditorShown(self, event):
-        row, col = event.GetRow(), event.GetCol() 
-        classtype = self.Table.GetValueByName(row, "Class")
-        if self.Table.GetColLabelValue(col) == "Type":
-            type_menu = wx.Menu(title='')
-            base_menu = wx.Menu(title='')
-            for base_type in self.Controler.GetBaseTypes():
-                new_id = wx.NewId()
-                AppendMenu(base_menu, help='', id=new_id, kind=wx.ITEM_NORMAL, text=base_type)
-                self.Bind(wx.EVT_MENU, self.GetVariableTypeFunction(base_type), id=new_id)
-            type_menu.AppendMenu(wx.NewId(), _("Base Types"), base_menu)
-            datatype_menu = wx.Menu(title='')
-            for datatype in self.Controler.GetDataTypes(basetypes = False, debug = self.ParentWindow.Debug):
-                new_id = wx.NewId()
-                AppendMenu(datatype_menu, help='', id=new_id, kind=wx.ITEM_NORMAL, text=datatype)
-                self.Bind(wx.EVT_MENU, self.GetVariableTypeFunction(datatype), id=new_id)
-            type_menu.AppendMenu(wx.NewId(), _("User Data Types"), datatype_menu)
-            functionblock_menu = wx.Menu(title='')
-            bodytype = self.Controler.GetEditedElementBodyType(self.TagName, self.ParentWindow.Debug)
-            pouname, poutype = self.Controler.GetEditedElementType(self.TagName, self.ParentWindow.Debug)
-            if classtype in ["Input","Output","InOut","External","Global"] or poutype != "function" and bodytype in ["ST", "IL"]:
-                for functionblock_type in self.Controler.GetFunctionBlockTypes(self.TagName, self.ParentWindow.Debug):
-                    new_id = wx.NewId()
-                    AppendMenu(functionblock_menu, help='', id=new_id, kind=wx.ITEM_NORMAL, text=functionblock_type)
-                    self.Bind(wx.EVT_MENU, self.GetVariableTypeFunction(functionblock_type), id=new_id)
-                type_menu.AppendMenu(wx.NewId(), _("Function Block Types"), functionblock_menu)
-            rect = self.VariablesGrid.BlockToDeviceRect((row, col), (row, col))
-            self.VariablesGrid.PopupMenuXY(type_menu, rect.x + rect.width, rect.y + self.VariablesGrid.GetColLabelSize())
-            event.Veto()
-        else:
-            event.Skip()
-    
-    def GetVariableTypeFunction(self, base_type):
-        def VariableTypeFunction(event):
-            row = self.VariablesGrid.GetGridCursorRow()
-            self.Table.SetValueByName(row, "Type", base_type)
-            self.Table.ResetView(self.VariablesGrid)
-            self.SaveValues(False)
-            self.ParentWindow.RefreshEditor(variablepanel = False)
-            self.Controler.BufferProject()
-            self.ParentWindow.RefreshTitle()
-            self.ParentWindow.RefreshEditMenu()
-            self.ParentWindow.RefreshInstancesTree()
-            self.ParentWindow.RefreshLibraryTree()
-            event.Skip()
-        return VariableTypeFunction
-    
-    def OnVariablesGridCellLeftClick(self, event):
-        row = event.GetRow()
-        if event.GetCol() == 0 and self.Table.GetValueByName(row, "Edit"):
-            row = event.GetRow()
-            var_name = self.Table.GetValueByName(row, "Name")
-            var_class = self.Table.GetValueByName(row, "Class")
-            var_type = self.Table.GetValueByName(row, "Type")
-            data = wx.TextDataObject(str((var_name, var_class, var_type, self.TagName)))
-            dragSource = wx.DropSource(self.VariablesGrid)
-            dragSource.SetData(data)
-            dragSource.DoDragDrop()
-        event.Skip()
-    
-    def OnVariablesGridSelectCell(self, event):
-        wx.CallAfter(self.RefreshButtons)
-        event.Skip()
-
-    def OnChar(self, event):
-        keycode = event.GetKeyCode()
-        if keycode == wx.WXK_DELETE:
-            row = self.Table.GetRow(self.VariablesGrid.GetGridCursorRow())
-            self.Values.remove(row)
-            self.SaveValues()
-            self.RefreshValues()
-            self.RefreshButtons()
-        event.Skip()
-
-    def MoveValue(self, value_index, move):
-        new_index = max(0, min(value_index + move, len(self.Values) - 1))
-        if new_index != value_index:
-            self.Values.insert(new_index, self.Values.pop(value_index))
-            self.SaveValues()
-            self.RefreshValues()
-            self.VariablesGrid.SetGridCursor(new_index, self.VariablesGrid.GetGridCursorCol())
-        
-    def RefreshValues(self, select=0):
-        if len(self.Table.data) > 0:
-            self.VariablesGrid.SetGridCursor(0, 1)
-        data = []
-        for num, variable in enumerate(self.Values):
-            if variable["Class"] in self.ClassList:
-                variable["Number"] = num + 1
-                data.append(variable)
-        self.Table.SetData(data)
-        if len(self.Table.data) > 0:
-            if select == -1:
-                select = len(self.Table.data) - 1
-            self.VariablesGrid.SetGridCursor(select, 1)
-            self.VariablesGrid.MakeCellVisible(select, 1)
-        self.Table.ResetView(self.VariablesGrid)
-
-    def SaveValues(self, buffer = True):
-        words = self.TagName.split("::")
-        if self.ElementType == "config":
-            self.Controler.SetConfigurationGlobalVars(words[1], self.Values)
-        elif self.ElementType == "resource":
-            self.Controler.SetConfigurationResourceGlobalVars(words[1], words[2], self.Values)
-        else:
-            if self.ReturnType.IsEnabled():
-                self.Controler.SetPouInterfaceReturnType(words[1], self.ReturnType.GetStringSelection())
-            self.Controler.SetPouInterfaceVars(words[1], self.Values)
-        if buffer:
-            self.Controler.BufferProject()
-            self.ParentWindow.RefreshTitle()
-            self.ParentWindow.RefreshEditMenu()
-            self.ParentWindow.RefreshInstancesTree()
-            self.ParentWindow.RefreshLibraryTree()
-
-    def AddVariableError(self, infos):
-        if isinstance(infos[0], TupleType):
-            for i in xrange(*infos[0]):
-                self.Table.AddError((i,) + infos[1:])
-        else:
-            self.Table.AddError(infos)
-        self.Table.ResetView(self.VariablesGrid)
-
-    def ClearErrors(self):
-        self.Table.ClearErrors()
-        self.Table.ResetView(self.VariablesGrid)
-
-#-------------------------------------------------------------------------------
 #                            Debug Variables Panel
 #-------------------------------------------------------------------------------
 
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/VariablePanel.py	Wed Sep 02 12:39:52 2009 -0600
@@ -0,0 +1,794 @@
+# -*- coding: utf-8 -*-
+
+#This file is part of PLCOpenEditor, a library implementing an IEC 61131-3 editor
+#based on the plcopen standard. 
+#
+#Copyright (C) 2007: Edouard TISSERANT and Laurent BESSARD
+#
+#See COPYING file for copyrights details.
+#
+#This library 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 2.1 of the License, or (at your option) any later version.
+#
+#This library 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 library; if not, write to the Free Software
+#Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+
+import wx, wx.grid
+
+from PLCOpenEditor import AppendMenu
+from plcopen.structures import LOCATIONDATATYPES, TestIdentifier, IEC_KEYWORDS
+
+#-------------------------------------------------------------------------------
+#                            Variables Editor Panel
+#-------------------------------------------------------------------------------
+
+def GetVariableTableColnames(location):
+    _ = lambda x : x
+    if location:
+    	return ["#", _("Name"), _("Class"), _("Type"), _("Location"), _("Initial Value"), _("Retain"), _("Constant")]
+    return ["#", _("Name"), _("Class"), _("Type"), _("Initial Value"), _("Retain"), _("Constant")]
+
+def GetAlternativeOptions():
+    _ = lambda x : x
+    return [_("Yes"), _("No")]
+ALTERNATIVE_OPTIONS_DICT = dict([(_(option), option) for option in GetAlternativeOptions()])
+
+def GetFilterChoiceTransfer():
+    _ = lambda x : x
+    return {_("All"): _("All"), _("Interface"): _("Interface"), 
+            _("   Input"): _("Input"), _("   Output"): _("Output"), _("   InOut"): _("InOut"), 
+            _("   External"): _("External"), _("Variables"): _("Variables"), _("   Local"): _("Local"),
+            _("   Temp"): _("Temp"), _("Global"): _("Global")}#, _("Access") : _("Access")}
+VARIABLE_CLASSES_DICT = dict([(_(_class), _class) for _class in GetFilterChoiceTransfer().itervalues()])
+
+class VariableTable(wx.grid.PyGridTableBase):
+    
+    """
+    A custom wx.grid.Grid Table using user supplied data
+    """
+    def __init__(self, parent, data, colnames):
+        # The base class must be initialized *first*
+        wx.grid.PyGridTableBase.__init__(self)
+        self.data = data
+        self.old_value = None
+        self.colnames = colnames
+        self.Errors = {}
+        self.Parent = parent
+        # XXX
+        # we need to store the row length and collength to
+        # see if the table has changed size
+        self._rows = self.GetNumberRows()
+        self._cols = self.GetNumberCols()
+    
+    def GetNumberCols(self):
+        return len(self.colnames)
+        
+    def GetNumberRows(self):
+        return len(self.data)
+
+    def GetColLabelValue(self, col, translate=True):
+        if col < len(self.colnames):
+            if translate:
+                return _(self.colnames[col])
+            return self.colnames[col]
+
+    def GetRowLabelValues(self, row, translate=True):
+        return row
+
+    def GetValue(self, row, col):
+        if row < self.GetNumberRows():
+            if col == 0:
+                return self.data[row]["Number"]
+            colname = self.GetColLabelValue(col, False)
+            value = str(self.data[row].get(colname, ""))
+            if colname in ["Class", "Retain", "Constant"]:
+                return _(value)
+            return value
+    
+    def SetValue(self, row, col, value):
+        if col < len(self.colnames):
+            colname = self.GetColLabelValue(col, False)
+            if colname == "Name":
+                self.old_value = self.data[row][colname]
+            elif colname == "Class":
+                value = VARIABLE_CLASSES_DICT[value]
+            elif colname in ["Retain", "Constant"]:
+                value = ALTERNATIVE_OPTIONS_DICT[value]
+            self.data[row][colname] = value
+    
+    def GetValueByName(self, row, colname):
+        if row < self.GetNumberRows():
+            return self.data[row].get(colname)
+
+    def SetValueByName(self, row, colname, value):
+        if row < self.GetNumberRows():
+            self.data[row][colname] = value
+
+    def GetOldValue(self):
+        return self.old_value
+    
+    def ResetView(self, grid):
+        """
+        (wx.grid.Grid) -> Reset the grid view.   Call this to
+        update the grid if rows and columns have been added or deleted
+        """
+        grid.BeginBatch()
+        for current, new, delmsg, addmsg in [
+            (self._rows, self.GetNumberRows(), wx.grid.GRIDTABLE_NOTIFY_ROWS_DELETED, wx.grid.GRIDTABLE_NOTIFY_ROWS_APPENDED),
+            (self._cols, self.GetNumberCols(), wx.grid.GRIDTABLE_NOTIFY_COLS_DELETED, wx.grid.GRIDTABLE_NOTIFY_COLS_APPENDED),
+        ]:
+            if new < current:
+                msg = wx.grid.GridTableMessage(self,delmsg,new,current-new)
+                grid.ProcessTableMessage(msg)
+            elif new > current:
+                msg = wx.grid.GridTableMessage(self,addmsg,new-current)
+                grid.ProcessTableMessage(msg)
+                self.UpdateValues(grid)
+        grid.EndBatch()
+
+        self._rows = self.GetNumberRows()
+        self._cols = self.GetNumberCols()
+        # update the column rendering scheme
+        self._updateColAttrs(grid)
+
+        # update the scrollbars and the displayed part of the grid
+        grid.AdjustScrollbars()
+        grid.ForceRefresh()
+
+    def UpdateValues(self, grid):
+        """Update all displayed values"""
+        # This sends an event to the grid table to update all of the values
+        msg = wx.grid.GridTableMessage(self, wx.grid.GRIDTABLE_REQUEST_VIEW_GET_VALUES)
+        grid.ProcessTableMessage(msg)
+
+    def _updateColAttrs(self, grid):
+        """
+        wx.grid.Grid -> update the column attributes to add the
+        appropriate renderer given the column name.
+
+        Otherwise default to the default renderer.
+        """
+        
+        for row in range(self.GetNumberRows()):
+            for col in range(self.GetNumberCols()):
+                editor = None
+                renderer = None
+                colname = self.GetColLabelValue(col, False)
+                if col != 0 and self.GetValueByName(row, "Edit"):
+                    grid.SetReadOnly(row, col, False)
+                    if colname == "Name":
+                        if self.Parent.PouIsUsed and self.GetValueByName(row, "Class") in ["Input", "Output", "InOut"]:
+                            grid.SetReadOnly(row, col, True)
+                        else:
+                            editor = wx.grid.GridCellTextEditor()
+                            renderer = wx.grid.GridCellStringRenderer()
+                    elif colname == "Initial Value":
+                        editor = wx.grid.GridCellTextEditor()
+                        renderer = wx.grid.GridCellStringRenderer()
+                    elif colname == "Location":
+                        if self.GetValueByName(row, "Class") in ["Local", "Global"]:
+                            editor = wx.grid.GridCellTextEditor()
+                            renderer = wx.grid.GridCellStringRenderer()
+                        else:
+                            grid.SetReadOnly(row, col, True)
+                    elif colname == "Class":
+                        if len(self.Parent.ClassList) == 1 or self.Parent.PouIsUsed and self.GetValueByName(row, "Class") in ["Input", "Output", "InOut"]:
+                            grid.SetReadOnly(row, col, True)
+                        else:
+                            editor = wx.grid.GridCellChoiceEditor()
+                            excluded = []
+                            if self.Parent.PouIsUsed:
+                                excluded.extend(["Input","Output","InOut"])
+                            if self.Parent.IsFunctionBlockType(self.data[row]["Type"]):
+                                excluded.extend(["Local","Temp"])
+                            editor.SetParameters(",".join([_(choice) for choice in self.Parent.ClassList if choice not in excluded]))
+                    elif colname in ["Retain", "Constant"]:
+                        editor = wx.grid.GridCellChoiceEditor()
+                        editor.SetParameters(",".join(map(_, self.Parent.OptionList)))
+                    elif colname == "Type":
+                        editor = wx.grid.GridCellTextEditor()
+                else:
+                    grid.SetReadOnly(row, col, True)
+                
+                grid.SetCellEditor(row, col, editor)
+                grid.SetCellRenderer(row, col, renderer)
+                
+                if row in self.Errors and self.Errors[row][0] == colname.lower():
+                    grid.SetCellBackgroundColour(row, col, wx.Colour(255, 255, 0))
+                    grid.SetCellTextColour(row, col, wx.RED)
+                    grid.MakeCellVisible(row, col)
+                else:
+                    grid.SetCellTextColour(row, col, wx.BLACK)
+                    grid.SetCellBackgroundColour(row, col, wx.WHITE)
+    
+    def SetData(self, data):
+        self.data = data
+    
+    def GetData(self):
+        return self.data
+    
+    def GetCurrentIndex(self):
+        return self.CurrentIndex
+    
+    def SetCurrentIndex(self, index):
+        self.CurrentIndex = index
+    
+    def AppendRow(self, row_content):
+        self.data.append(row_content)
+
+    def RemoveRow(self, row_index):
+        self.data.pop(row_index)
+
+    def GetRow(self, row_index):
+        return self.data[row_index]
+
+    def Empty(self):
+        self.data = []
+        self.editors = []
+
+    def AddError(self, infos):
+        self.Errors[infos[0]] = infos[1:]
+
+    def ClearErrors(self):
+        self.Errors = {}
+
+class VariableDropTarget(wx.TextDropTarget):
+    
+    def __init__(self, parent):
+        wx.TextDropTarget.__init__(self)
+        self.ParentWindow = parent
+    
+    def OnDropText(self, x, y, data):
+        x, y = self.ParentWindow.VariablesGrid.CalcUnscrolledPosition(x, y)
+        col = self.ParentWindow.VariablesGrid.XToCol(x)
+        row = self.ParentWindow.VariablesGrid.YToRow(y - self.ParentWindow.VariablesGrid.GetColLabelSize())
+        if col != wx.NOT_FOUND and row != wx.NOT_FOUND:
+            if self.ParentWindow.Table.GetColLabelValue(col, False) != "Location":
+                return
+            message = None
+            if not self.ParentWindow.Table.GetValueByName(row, "Edit"):
+                message = _("Can't affect a location to a function block instance")
+            elif self.ParentWindow.Table.GetValueByName(row, "Class") not in ["Local", "Global"]:
+                message = _("Can affect a location only to local or global variables")
+            else:
+                try:
+                    values = eval(data)    
+                except:
+                    message = _("Invalid value \"%s\" for location")%data
+                    values = None
+                if not isinstance(values, TupleType):
+                    message = _("Invalid value \"%s\" for location")%data
+                    values = None
+                if values is not None and values[1] == "location":
+                    location = values[0]
+                    variable_type = self.ParentWindow.Table.GetValueByName(row, "Type")
+                    base_type = self.ParentWindow.Controler.GetBaseType(variable_type)
+                    message = None
+                    if location.startswith("%"):
+                        if base_type != values[2]:
+                            message = _("Incompatible data types between \"%s\" and \"%s\"")%(values[2], variable_type)
+                        else:
+                            self.ParentWindow.Table.SetValue(row, col, location)
+                            self.ParentWindow.Table.ResetView(self.ParentWindow.VariablesGrid)
+                            self.ParentWindow.SaveValues()
+                    else:
+                        if location[0].isdigit() and base_type != "BOOL":
+                            message = _("Incompatible size of data between \"%s\" and \"BOOL\"")%location
+                        elif location[0] not in LOCATIONDATATYPES:
+                            message = _("Unrecognized data size \"%s\"")%location[0]
+                        elif base_type not in LOCATIONDATATYPES[location[0]]:
+                            message = _("Incompatible size of data between \"%s\" and \"%s\"")%(location, variable_type)
+                        else:
+                            dialog = wx.SingleChoiceDialog(self.ParentWindow, _("Select a variable class:"), _("Variable class"), ["Input", "Output", "Memory"], wx.OK|wx.CANCEL)
+                            if dialog.ShowModal() == wx.ID_OK:
+                                selected = dialog.GetSelection()
+                                if selected == 0:
+                                    location = "%I" + location
+                                elif selected == 1:
+                                    location = "%Q" + location
+                                else:
+                                    location = "%M" + location
+                                self.ParentWindow.Table.SetValue(row, col, location)
+                                self.ParentWindow.Table.ResetView(self.ParentWindow.VariablesGrid)
+                                self.ParentWindow.SaveValues()
+                            dialog.Destroy()
+            if message is not None:
+                wx.CallAfter(self.ShowMessage, message)
+            
+    def ShowMessage(self, message):
+        message = wx.MessageDialog(self.ParentWindow, message, _("Error"), wx.OK|wx.ICON_ERROR)
+        message.ShowModal()
+        message.Destroy()
+
+[ID_VARIABLEEDITORPANEL, ID_VARIABLEEDITORPANELVARIABLESGRID, 
+ ID_VARIABLEEDITORCONTROLPANEL, ID_VARIABLEEDITORPANELRETURNTYPE, 
+ ID_VARIABLEEDITORPANELCLASSFILTER, ID_VARIABLEEDITORPANELADDBUTTON, 
+ ID_VARIABLEEDITORPANELDELETEBUTTON, ID_VARIABLEEDITORPANELUPBUTTON, 
+ ID_VARIABLEEDITORPANELDOWNBUTTON, ID_VARIABLEEDITORPANELSTATICTEXT1, 
+ ID_VARIABLEEDITORPANELSTATICTEXT2, ID_VARIABLEEDITORPANELSTATICTEXT3,
+] = [wx.NewId() for _init_ctrls in range(12)]
+
+class VariablePanel(wx.Panel):
+    
+    if wx.VERSION < (2, 6, 0):
+        def Bind(self, event, function, id = None):
+            if id is not None:
+                event(self, id, function)
+            else:
+                event(self, function)
+    
+    def _init_coll_MainSizer_Items(self, parent):
+        parent.AddWindow(self.VariablesGrid, 0, border=0, flag=wx.GROW)
+        parent.AddWindow(self.ControlPanel, 0, border=5, flag=wx.GROW|wx.ALL)
+    
+    def _init_coll_MainSizer_Growables(self, parent):
+        parent.AddGrowableCol(0)
+        parent.AddGrowableRow(0)
+    
+    def _init_coll_ControlPanelSizer_Items(self, parent):
+        parent.AddSizer(self.ChoicePanelSizer, 0, border=0, flag=wx.GROW)
+        parent.AddSizer(self.ButtonPanelSizer, 0, border=0, flag=wx.ALIGN_CENTER)
+
+    def _init_coll_ControlPanelSizer_Growables(self, parent):
+        parent.AddGrowableCol(0)
+        parent.AddGrowableRow(0)
+        parent.AddGrowableRow(1)
+
+    def _init_coll_ChoicePanelSizer_Items(self, parent):
+        parent.AddWindow(self.staticText1, 0, border=0, flag=wx.ALIGN_BOTTOM)
+        parent.AddWindow(self.ReturnType, 0, border=0, flag=0)
+        parent.AddWindow(self.staticText2, 0, border=0, flag=wx.ALIGN_BOTTOM)
+        parent.AddWindow(self.ClassFilter, 0, border=0, flag=0)
+
+    def _init_coll_ButtonPanelSizer_Items(self, parent):
+        parent.AddWindow(self.UpButton, 0, border=0, flag=0)
+        parent.AddWindow(self.AddButton, 0, border=0, flag=0)
+        parent.AddWindow(self.DownButton, 0, border=0, flag=0)
+        parent.AddWindow(self.DeleteButton, 0, border=0, flag=0)
+        
+    def _init_coll_ButtonPanelSizer_Growables(self, parent):
+        parent.AddGrowableCol(0)
+        parent.AddGrowableCol(1)
+        parent.AddGrowableCol(2)
+        parent.AddGrowableCol(3)
+        parent.AddGrowableRow(0)
+
+    def _init_sizers(self):
+        self.MainSizer = wx.FlexGridSizer(cols=2, hgap=10, rows=1, vgap=0)
+        self.ControlPanelSizer = wx.FlexGridSizer(cols=1, hgap=0, rows=2, vgap=5)
+        self.ChoicePanelSizer = wx.GridSizer(cols=1, hgap=5, rows=4, vgap=5)
+        self.ButtonPanelSizer = wx.FlexGridSizer(cols=2, hgap=5, rows=2, vgap=5)
+        
+        self._init_coll_MainSizer_Items(self.MainSizer)
+        self._init_coll_MainSizer_Growables(self.MainSizer)
+        self._init_coll_ControlPanelSizer_Items(self.ControlPanelSizer)
+        self._init_coll_ControlPanelSizer_Growables(self.ControlPanelSizer)
+        self._init_coll_ChoicePanelSizer_Items(self.ChoicePanelSizer)
+        self._init_coll_ButtonPanelSizer_Items(self.ButtonPanelSizer)
+        self._init_coll_ButtonPanelSizer_Growables(self.ButtonPanelSizer)
+        
+        self.SetSizer(self.MainSizer)
+        self.ControlPanel.SetSizer(self.ControlPanelSizer)
+
+    def _init_ctrls(self, prnt):
+        wx.Panel.__init__(self, id=ID_VARIABLEEDITORPANEL,
+              name='VariableEditorPanel', parent=prnt, pos=wx.Point(0, 0),
+              size=wx.Size(0, 0), style=wx.TAB_TRAVERSAL)
+
+        self.VariablesGrid = wx.grid.Grid(id=ID_VARIABLEEDITORPANELVARIABLESGRID,
+              name='VariablesGrid', parent=self, pos=wx.Point(0, 0), 
+              size=wx.Size(0, 0), style=wx.VSCROLL)
+        self.VariablesGrid.SetFont(wx.Font(12, 77, wx.NORMAL, wx.NORMAL, False,
+              'Sans'))
+        self.VariablesGrid.SetLabelFont(wx.Font(10, 77, wx.NORMAL, wx.NORMAL,
+              False, 'Sans'))
+        self.VariablesGrid.SetSelectionBackground(wx.WHITE)
+        self.VariablesGrid.SetSelectionForeground(wx.BLACK)
+        if wx.VERSION >= (2, 6, 0):
+            self.VariablesGrid.Bind(wx.grid.EVT_GRID_CELL_CHANGE, self.OnVariablesGridCellChange)
+            self.VariablesGrid.Bind(wx.grid.EVT_GRID_SELECT_CELL, self.OnVariablesGridSelectCell)
+            self.VariablesGrid.Bind(wx.grid.EVT_GRID_CELL_LEFT_CLICK, self.OnVariablesGridCellLeftClick)
+            self.VariablesGrid.Bind(wx.grid.EVT_GRID_EDITOR_SHOWN, self.OnVariablesGridEditorShown)
+            #self.VariablesGrid.Bind(wx.EVT_KEY_DOWN, self.OnChar)
+        else:
+            wx.grid.EVT_GRID_CELL_CHANGE(self.VariablesGrid, self.OnVariablesGridCellChange)
+            wx.grid.EVT_GRID_SELECT_CELL(self.VariablesGrid, self.OnVariablesGridSelectCell)
+            wx.grid.EVT_GRID_CELL_LEFT_CLICK(self.VariablesGrid, self.OnVariablesGridCellLeftClick)
+            wx.grid.EVT_GRID_EDITOR_SHOWN(self.VariablesGrid, self.OnVariablesGridEditorShown)
+            #wx.EVT_KEY_DOWN(self.VariablesGrid, self.OnChar)
+        self.VariablesGrid.SetDropTarget(VariableDropTarget(self))
+        
+        self.ControlPanel = wx.ScrolledWindow(id=ID_VARIABLEEDITORCONTROLPANEL,
+              name='ControlPanel', parent=self, pos=wx.Point(0, 0),
+              size=wx.Size(0, 0), style=wx.TAB_TRAVERSAL)
+        self.ControlPanel.SetScrollRate(0, 10)
+        
+        self.staticText1 = wx.StaticText(id=ID_VARIABLEEDITORPANELSTATICTEXT1,
+              label=_('Return Type:'), name='staticText1', parent=self.ControlPanel,
+              pos=wx.Point(0, 0), size=wx.Size(145, 17), style=0)
+
+        self.ReturnType = wx.ComboBox(id=ID_VARIABLEEDITORPANELRETURNTYPE,
+              name='ReturnType', parent=self.ControlPanel, pos=wx.Point(0, 0),
+              size=wx.Size(145, 28), style=wx.CB_READONLY)
+        self.Bind(wx.EVT_COMBOBOX, self.OnReturnTypeChanged, id=ID_VARIABLEEDITORPANELRETURNTYPE)
+
+        self.staticText2 = wx.StaticText(id=ID_VARIABLEEDITORPANELSTATICTEXT2,
+              label=_('Class Filter:'), name='staticText2', parent=self.ControlPanel,
+              pos=wx.Point(0, 0), size=wx.Size(145, 17), style=0)
+
+        self.ClassFilter = wx.ComboBox(id=ID_VARIABLEEDITORPANELCLASSFILTER,
+              name='ClassFilter', parent=self.ControlPanel, pos=wx.Point(0, 0),
+              size=wx.Size(145, 28), style=wx.CB_READONLY)
+        self.Bind(wx.EVT_COMBOBOX, self.OnClassFilter, id=ID_VARIABLEEDITORPANELCLASSFILTER)
+
+        self.AddButton = wx.Button(id=ID_VARIABLEEDITORPANELADDBUTTON, label=_('Add'),
+              name='AddButton', parent=self.ControlPanel, pos=wx.Point(0, 0),
+              size=wx.DefaultSize, style=0)
+        self.Bind(wx.EVT_BUTTON, self.OnAddButton, id=ID_VARIABLEEDITORPANELADDBUTTON)
+
+        self.DeleteButton = wx.Button(id=ID_VARIABLEEDITORPANELDELETEBUTTON, label=_('Delete'),
+              name='DeleteButton', parent=self.ControlPanel, pos=wx.Point(0, 0),
+              size=wx.DefaultSize, style=0)
+        self.Bind(wx.EVT_BUTTON, self.OnDeleteButton, id=ID_VARIABLEEDITORPANELDELETEBUTTON)
+
+        self.UpButton = wx.Button(id=ID_VARIABLEEDITORPANELUPBUTTON, label='^',
+              name='UpButton', parent=self.ControlPanel, pos=wx.Point(0, 0),
+              size=wx.Size(32, 32), style=0)
+        self.Bind(wx.EVT_BUTTON, self.OnUpButton, id=ID_VARIABLEEDITORPANELUPBUTTON)
+
+        self.DownButton = wx.Button(id=ID_VARIABLEEDITORPANELDOWNBUTTON, label='v',
+              name='DownButton', parent=self.ControlPanel, pos=wx.Point(0, 0),
+              size=wx.Size(32, 32), style=0)
+        self.Bind(wx.EVT_BUTTON, self.OnDownButton, id=ID_VARIABLEEDITORPANELDOWNBUTTON)
+
+        self._init_sizers()
+
+    def __init__(self, parent, window, controler, element_type):
+        self._init_ctrls(parent)
+        self.ParentWindow = window
+        self.Controler = controler
+        self.ElementType = element_type
+        
+        self.Filter = "All"
+        self.FilterChoices = []
+        self.FilterChoiceTransfer = GetFilterChoiceTransfer()
+        
+        if element_type in ["config", "resource"]:
+            self.DefaultTypes = {"All" : "Global"}
+            self.DefaultValue = {"Name" : "", "Class" : "", "Type" : "INT", "Location" : "", "Initial Value" : "", "Retain" : "No", "Constant" : "No", "Edit" : True}
+        else:
+            self.DefaultTypes = {"All" : "Local", "Interface" : "Input", "Variables" : "Local"}
+            self.DefaultValue = {"Name" : "", "Class" : "", "Type" : "INT", "Location" : "", "Initial Value" : "", "Retain" : "No", "Constant" : "No", "Edit" : True}
+        if element_type in ["config", "resource"] or element_type in ["program", "transition", "action"]:
+            self.Table = VariableTable(self, [], GetVariableTableColnames(True))
+            if element_type not in ["config", "resource"]:
+                self.FilterChoices = ["All", "Interface", "   Input", "   Output", "   InOut", "   External", "Variables", "   Local", "   Temp"]#,"Access"]
+            else:
+                self.FilterChoices = ["All", "Global"]#,"Access"]
+            self.ColSizes = [40, 80, 70, 80, 80, 80, 60, 70]
+            self.ColAlignements = [wx.ALIGN_CENTER, wx.ALIGN_LEFT, wx.ALIGN_LEFT, wx.ALIGN_LEFT, wx.ALIGN_LEFT, wx.ALIGN_LEFT, wx.ALIGN_CENTER, wx.ALIGN_CENTER]
+        else:
+            self.Table = VariableTable(self, [], GetVariableTableColnames(False))
+            if element_type == "function":
+                self.FilterChoices = ["All", "Interface", "   Input", "   Output", "   InOut", "Variables", "   Local", "   Temp"]
+            else:
+                self.FilterChoices = ["All", "Interface", "   Input", "   Output", "   InOut", "   External", "Variables", "   Local", "   Temp"]
+            self.ColSizes = [40, 120, 70, 80, 120, 60, 70]
+            self.ColAlignements = [wx.ALIGN_CENTER, wx.ALIGN_LEFT, wx.ALIGN_LEFT, wx.ALIGN_LEFT, wx.ALIGN_LEFT, wx.ALIGN_CENTER, wx.ALIGN_CENTER]
+        for choice in self.FilterChoices:
+            self.ClassFilter.Append(_(choice))
+        reverse_transfer = {}
+        for filter, choice in self.FilterChoiceTransfer.items():
+            reverse_transfer[choice] = filter
+        self.ClassFilter.SetStringSelection(_(reverse_transfer[self.Filter]))
+        self.RefreshTypeList()
+
+        self.OptionList = GetAlternativeOptions()
+        
+        if element_type == "function":
+            for base_type in self.Controler.GetBaseTypes():
+                self.ReturnType.Append(base_type)
+            self.ReturnType.Enable(True)
+        else:
+            self.ReturnType.Enable(False)
+            self.staticText1.Hide()
+            self.ReturnType.Hide()
+            
+        self.VariablesGrid.SetTable(self.Table)
+        self.VariablesGrid.SetRowLabelSize(0)
+        for col in range(self.Table.GetNumberCols()):
+            attr = wx.grid.GridCellAttr()
+            attr.SetAlignment(self.ColAlignements[col], wx.ALIGN_CENTRE)
+            self.VariablesGrid.SetColAttr(col, attr)
+            self.VariablesGrid.SetColMinimalWidth(col, self.ColSizes[col])
+            self.VariablesGrid.AutoSizeColumn(col, False)
+    
+    def SetTagName(self, tagname):
+        self.TagName = tagname
+    
+    def IsFunctionBlockType(self, name):
+        bodytype = self.Controler.GetEditedElementBodyType(self.TagName, self.ParentWindow.Debug)
+        pouname, poutype = self.Controler.GetEditedElementType(self.TagName, self.ParentWindow.Debug)
+        if poutype != "function" and bodytype in ["ST", "IL"]:
+            return False
+        else:
+            return name in self.Controler.GetFunctionBlockTypes(self.TagName, self.ParentWindow.Debug)
+    
+    def RefreshView(self):
+        self.PouNames = self.Controler.GetProjectPouNames(self.ParentWindow.Debug)
+        
+        words = self.TagName.split("::")
+        if self.ElementType == "config":
+            self.PouIsUsed = False
+            returnType = None
+            self.Values = self.Controler.GetConfigurationGlobalVars(words[1], self.ParentWindow.Debug)
+        elif self.ElementType == "resource":
+            self.PouIsUsed = False
+            returnType = None
+            self.Values = self.Controler.GetConfigurationResourceGlobalVars(words[1], words[2], self.ParentWindow.Debug)
+        else:
+            self.PouIsUsed = self.Controler.PouIsUsed(words[1], self.ParentWindow.Debug)
+            returnType = self.Controler.GetEditedElementInterfaceReturnType(self.TagName, self.ParentWindow.Debug)
+            self.Values = self.Controler.GetEditedElementInterfaceVars(self.TagName, self.ParentWindow.Debug)
+        
+        if returnType and self.ReturnType.IsEnabled():
+            self.ReturnType.SetStringSelection(returnType)
+        
+        self.RefreshValues()
+        self.RefreshButtons()
+    
+    def OnReturnTypeChanged(self, event):
+        words = self.TagName.split("::")
+        self.Controler.SetPouInterfaceReturnType(words[1], self.ReturnType.GetStringSelection())
+        self.Controler.BufferProject()
+        self.ParentWindow.RefreshEditor(variablepanel = False)
+        self.ParentWindow.RefreshTitle()
+        self.ParentWindow.RefreshEditMenu()
+        self.ParentWindow.RefreshInstancesTree()
+        self.ParentWindow.RefreshLibraryTree()
+        event.Skip()
+    
+    def OnClassFilter(self, event):
+        self.Filter = self.FilterChoiceTransfer[self.ClassFilter.GetStringSelection()]
+        self.RefreshTypeList()
+        self.RefreshValues()
+        self.RefreshButtons()
+        event.Skip()
+
+    def RefreshTypeList(self):
+        if self.Filter == "All":
+            self.ClassList = [self.FilterChoiceTransfer[choice] for choice in self.FilterChoices if self.FilterChoiceTransfer[choice] not in ["All","Interface","Variables"]]
+        elif self.Filter == "Interface":
+            self.ClassList = ["Input","Output","InOut","External"]
+        elif self.Filter == "Variables":
+            self.ClassList = ["Local","Temp"]
+        else:
+            self.ClassList = [self.Filter]
+
+    def RefreshButtons(self):
+        if getattr(self, "Table", None):
+            table_length = len(self.Table.data)
+            row_class = None
+            row_edit = True
+            if table_length > 0:
+                row = self.VariablesGrid.GetGridCursorRow()
+                row_edit = self.Table.GetValueByName(row, "Edit")
+                if self.PouIsUsed:
+                    row_class = self.Table.GetValueByName(row, "Class")
+            self.AddButton.Enable(not self.PouIsUsed or self.Filter not in ["Interface", "Input", "Output", "InOut"])
+            self.DeleteButton.Enable(table_length > 0 and row_edit and row_class not in ["Input", "Output", "InOut"])
+            self.UpButton.Enable(table_length > 0 and self.Filter == "All" and row_class not in ["Input", "Output", "InOut"])
+            self.DownButton.Enable(table_length > 0 and self.Filter == "All" and row_class not in ["Input", "Output", "InOut"])
+
+    def OnAddButton(self, event):
+        new_row = self.DefaultValue.copy()
+        if self.Filter in self.DefaultTypes:
+            new_row["Class"] = self.DefaultTypes[self.Filter]
+        else:
+            new_row["Class"] = self.Filter
+        if self.Filter == "All" and len(self.Values) > 0:
+            row_index = self.VariablesGrid.GetGridCursorRow() + 1
+            self.Values.insert(row_index, new_row)
+        else:
+            row_index = -1
+            self.Values.append(new_row)
+        self.SaveValues()
+        self.RefreshValues(row_index)
+        self.RefreshButtons()
+        event.Skip()
+
+    def OnDeleteButton(self, event):
+        row = self.Table.GetRow(self.VariablesGrid.GetGridCursorRow())
+        self.Values.remove(row)
+        self.SaveValues()
+        self.RefreshValues()
+        self.RefreshButtons()
+        event.Skip()
+
+    def OnUpButton(self, event):
+        self.MoveValue(self.VariablesGrid.GetGridCursorRow(), -1)
+        self.RefreshButtons()
+        event.Skip()
+
+    def OnDownButton(self, event):
+        self.MoveValue(self.VariablesGrid.GetGridCursorRow(), 1)
+        self.RefreshButtons()
+        event.Skip()
+
+    def OnVariablesGridCellChange(self, event):
+        row, col = event.GetRow(), event.GetCol()
+        colname = self.Table.GetColLabelValue(col)
+        value = self.Table.GetValue(row, col)
+        if colname == "Name" and value != "":
+            if not TestIdentifier(value):
+                message = wx.MessageDialog(self, _("\"%s\" is not a valid identifier!")%value, _("Error"), wx.OK|wx.ICON_ERROR)
+                message.ShowModal()
+                message.Destroy()
+                event.Veto()
+            elif value.upper() in IEC_KEYWORDS:
+                message = wx.MessageDialog(self, _("\"%s\" is a keyword. It can't be used!")%value, _("Error"), wx.OK|wx.ICON_ERROR)
+                message.ShowModal()
+                message.Destroy()
+                event.Veto()
+            elif value.upper() in self.PouNames:
+                message = wx.MessageDialog(self, _("A pou with \"%s\" as name exists!")%value, _("Error"), wx.OK|wx.ICON_ERROR)
+                message.ShowModal()
+                message.Destroy()
+                event.Veto()
+            elif value.upper() in [var["Name"].upper() for var in self.Values if var != self.Table.data[row]]:
+                message = wx.MessageDialog(self, _("A variable with \"%s\" as name already exists in this pou!")%value, _("Error"), wx.OK|wx.ICON_ERROR)
+                message.ShowModal()
+                message.Destroy()
+                event.Veto()
+            else:
+                self.SaveValues(False)
+                old_value = self.Table.GetOldValue()
+                if old_value != "":
+                    self.Controler.UpdateEditedElementUsedVariable(self.TagName, old_value, value)
+                self.Controler.BufferProject()
+                self.ParentWindow.RefreshEditor(variablepanel = False)
+                self.ParentWindow.RefreshTitle()
+                self.ParentWindow.RefreshEditMenu()
+                self.ParentWindow.RefreshInstancesTree()
+                self.ParentWindow.RefreshLibraryTree()
+                event.Skip()
+        else:
+            self.SaveValues()
+            if colname == "Class":
+                self.Table.ResetView(self.VariablesGrid)
+            event.Skip()
+    
+    def OnVariablesGridEditorShown(self, event):
+        row, col = event.GetRow(), event.GetCol() 
+        classtype = self.Table.GetValueByName(row, "Class")
+        if self.Table.GetColLabelValue(col) == "Type":
+            type_menu = wx.Menu(title='')
+            base_menu = wx.Menu(title='')
+            for base_type in self.Controler.GetBaseTypes():
+                new_id = wx.NewId()
+                AppendMenu(base_menu, help='', id=new_id, kind=wx.ITEM_NORMAL, text=base_type)
+                self.Bind(wx.EVT_MENU, self.GetVariableTypeFunction(base_type), id=new_id)
+            type_menu.AppendMenu(wx.NewId(), _("Base Types"), base_menu)
+            datatype_menu = wx.Menu(title='')
+            for datatype in self.Controler.GetDataTypes(basetypes = False, debug = self.ParentWindow.Debug):
+                new_id = wx.NewId()
+                AppendMenu(datatype_menu, help='', id=new_id, kind=wx.ITEM_NORMAL, text=datatype)
+                self.Bind(wx.EVT_MENU, self.GetVariableTypeFunction(datatype), id=new_id)
+            type_menu.AppendMenu(wx.NewId(), _("User Data Types"), datatype_menu)
+            functionblock_menu = wx.Menu(title='')
+            bodytype = self.Controler.GetEditedElementBodyType(self.TagName, self.ParentWindow.Debug)
+            pouname, poutype = self.Controler.GetEditedElementType(self.TagName, self.ParentWindow.Debug)
+            if classtype in ["Input","Output","InOut","External","Global"] or poutype != "function" and bodytype in ["ST", "IL"]:
+                for functionblock_type in self.Controler.GetFunctionBlockTypes(self.TagName, self.ParentWindow.Debug):
+                    new_id = wx.NewId()
+                    AppendMenu(functionblock_menu, help='', id=new_id, kind=wx.ITEM_NORMAL, text=functionblock_type)
+                    self.Bind(wx.EVT_MENU, self.GetVariableTypeFunction(functionblock_type), id=new_id)
+                type_menu.AppendMenu(wx.NewId(), _("Function Block Types"), functionblock_menu)
+            rect = self.VariablesGrid.BlockToDeviceRect((row, col), (row, col))
+            self.VariablesGrid.PopupMenuXY(type_menu, rect.x + rect.width, rect.y + self.VariablesGrid.GetColLabelSize())
+            event.Veto()
+        else:
+            event.Skip()
+    
+    def GetVariableTypeFunction(self, base_type):
+        def VariableTypeFunction(event):
+            row = self.VariablesGrid.GetGridCursorRow()
+            self.Table.SetValueByName(row, "Type", base_type)
+            self.Table.ResetView(self.VariablesGrid)
+            self.SaveValues(False)
+            self.ParentWindow.RefreshEditor(variablepanel = False)
+            self.Controler.BufferProject()
+            self.ParentWindow.RefreshTitle()
+            self.ParentWindow.RefreshEditMenu()
+            self.ParentWindow.RefreshInstancesTree()
+            self.ParentWindow.RefreshLibraryTree()
+            event.Skip()
+        return VariableTypeFunction
+    
+    def OnVariablesGridCellLeftClick(self, event):
+        row = event.GetRow()
+        if event.GetCol() == 0 and self.Table.GetValueByName(row, "Edit"):
+            row = event.GetRow()
+            var_name = self.Table.GetValueByName(row, "Name")
+            var_class = self.Table.GetValueByName(row, "Class")
+            var_type = self.Table.GetValueByName(row, "Type")
+            data = wx.TextDataObject(str((var_name, var_class, var_type, self.TagName)))
+            dragSource = wx.DropSource(self.VariablesGrid)
+            dragSource.SetData(data)
+            dragSource.DoDragDrop()
+        event.Skip()
+    
+    def OnVariablesGridSelectCell(self, event):
+        wx.CallAfter(self.RefreshButtons)
+        event.Skip()
+
+    def OnChar(self, event):
+        keycode = event.GetKeyCode()
+        if keycode == wx.WXK_DELETE:
+            row = self.Table.GetRow(self.VariablesGrid.GetGridCursorRow())
+            self.Values.remove(row)
+            self.SaveValues()
+            self.RefreshValues()
+            self.RefreshButtons()
+        event.Skip()
+
+    def MoveValue(self, value_index, move):
+        new_index = max(0, min(value_index + move, len(self.Values) - 1))
+        if new_index != value_index:
+            self.Values.insert(new_index, self.Values.pop(value_index))
+            self.SaveValues()
+            self.RefreshValues()
+            self.VariablesGrid.SetGridCursor(new_index, self.VariablesGrid.GetGridCursorCol())
+        
+    def RefreshValues(self, select=0):
+        if len(self.Table.data) > 0:
+            self.VariablesGrid.SetGridCursor(0, 1)
+        data = []
+        for num, variable in enumerate(self.Values):
+            if variable["Class"] in self.ClassList:
+                variable["Number"] = num + 1
+                data.append(variable)
+        self.Table.SetData(data)
+        if len(self.Table.data) > 0:
+            if select == -1:
+                select = len(self.Table.data) - 1
+            self.VariablesGrid.SetGridCursor(select, 1)
+            self.VariablesGrid.MakeCellVisible(select, 1)
+        self.Table.ResetView(self.VariablesGrid)
+
+    def SaveValues(self, buffer = True):
+        words = self.TagName.split("::")
+        if self.ElementType == "config":
+            self.Controler.SetConfigurationGlobalVars(words[1], self.Values)
+        elif self.ElementType == "resource":
+            self.Controler.SetConfigurationResourceGlobalVars(words[1], words[2], self.Values)
+        else:
+            if self.ReturnType.IsEnabled():
+                self.Controler.SetPouInterfaceReturnType(words[1], self.ReturnType.GetStringSelection())
+            self.Controler.SetPouInterfaceVars(words[1], self.Values)
+        if buffer:
+            self.Controler.BufferProject()
+            self.ParentWindow.RefreshTitle()
+            self.ParentWindow.RefreshEditMenu()
+            self.ParentWindow.RefreshInstancesTree()
+            self.ParentWindow.RefreshLibraryTree()
+
+    def AddVariableError(self, infos):
+        if isinstance(infos[0], TupleType):
+            for i in xrange(*infos[0]):
+                self.Table.AddError((i,) + infos[1:])
+        else:
+            self.Table.AddError(infos)
+        self.Table.ResetView(self.VariablesGrid)
+
+    def ClearErrors(self):
+        self.Table.ClearErrors()
+        self.Table.ResetView(self.VariablesGrid)