#!/usr/bin/env python

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

#This file is part of PLCOpenEditor, a library implementing an IEC 61131-3 editor

#based on the plcopen standard.

#

#Copyright (C) 2012: 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

from types import TupleType

import wx

import wx.lib.buttons

from graphics import DebugDataConsumer, DebugViewer

from controls import CustomGrid, CustomTable

from dialogs.ForceVariableDialog import ForceVariableDialog

from util.BitmapLibrary import GetBitmap

def AppendMenu(parent, help, id, kind, text):

parent.Append(help=help, id=id, kind=kind, text=text)

def GetDebugVariablesTableColnames():

_ = lambda x : x

return [_("Variable"), _("Value")]

class VariableTableItem(DebugDataConsumer):

def __init__(self, parent, variable, value):

DebugDataConsumer.__init__(self)

self.Parent = parent

self.Variable = variable

self.Value = value

def __del__(self):

self.Parent = None

def SetVariable(self, variable):

if self.Parent and self.Variable != variable:

self.Variable = variable

self.Parent.RefreshGrid()

def GetVariable(self):

return self.Variable

def SetForced(self, forced):

if self.Forced != forced:

self.Forced = forced

self.Parent.HasNewData = True

def SetValue(self, value):

if self.Value != value:

self.Value = value

self.Parent.HasNewData = True

def GetValue(self):

return self.Value

class DebugVariableTable(CustomTable):

def GetValue(self, row, col):

if row < self.GetNumberRows():

return self.GetValueByName(row, self.GetColLabelValue(col, False))

return ""

def SetValue(self, row, col, value):

if col < len(self.colnames):

self.SetValueByName(row, self.GetColLabelValue(col, False), value)

def GetValueByName(self, row, colname):

if row < self.GetNumberRows():

if colname == "Variable":

return self.data[row].GetVariable()

elif colname == "Value":

return self.data[row].GetValue()

return ""

def SetValueByName(self, row, colname, value):

if row < self.GetNumberRows():

if colname == "Variable":

self.data[row].SetVariable(value)

elif colname == "Value":

self.data[row].SetValue(value)

def IsForced(self, row):

if row < self.GetNumberRows():

return self.data[row].IsForced()

return False

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()):

if self.GetColLabelValue(col, False) == "Value":

if self.IsForced(row):

grid.SetCellTextColour(row, col, wx.BLUE)

else:

grid.SetCellTextColour(row, col, wx.BLACK)

grid.SetReadOnly(row, col, True)

self.ResizeRow(grid, row)

def AppendItem(self, data):

self.data.append(data)

def InsertItem(self, idx, data):

self.data.insert(idx, data)

def RemoveItem(self, idx):

self.data.pop(idx)

def MoveItem(self, idx, new_idx):

self.data.insert(new_idx, self.data.pop(idx))

def GetItem(self, idx):

return self.data[idx]

class DebugVariableDropTarget(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)

row = self.ParentWindow.VariablesGrid.YToRow(y - self.ParentWindow.VariablesGrid.GetColLabelSize())

if row == wx.NOT_FOUND:

row = self.ParentWindow.Table.GetNumberRows()

message = None

try:

values = eval(data)

except:

message = _("Invalid value \"%s\" for debug variable")%data

values = None

if not isinstance(values, TupleType):

message = _("Invalid value \"%s\" for debug variable")%data

values = None

if values is not None and values[1] == "debug":

self.ParentWindow.InsertValue(values[0], row)

if message is not None:

wx.CallAfter(self.ShowMessage, message)

def ShowMessage(self, message):

dialog = wx.MessageDialog(self.ParentWindow, message, _("Error"), wx.OK|wx.ICON_ERROR)

dialog.ShowModal()

dialog.Destroy()

class DebugVariablePanel(wx.Panel, DebugViewer):

def __init__(self, parent, producer):

wx.Panel.__init__(self, parent, style=wx.TAB_TRAVERSAL)

DebugViewer.__init__(self, producer, True)

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

main_sizer.AddGrowableCol(0)

main_sizer.AddGrowableRow(1)

button_sizer = wx.BoxSizer(wx.HORIZONTAL)

main_sizer.AddSizer(button_sizer, border=5,

flag=wx.ALIGN_RIGHT|wx.ALL)

for name, bitmap, help in [

("DeleteButton", "remove_element", _("Remove debug variable")),

("UpButton", "up", _("Move debug variable up")),

("DownButton", "down", _("Move debug variable down"))]:

button = wx.lib.buttons.GenBitmapButton(self, bitmap=GetBitmap(bitmap),

size=wx.Size(28, 28), style=wx.NO_BORDER)

button.SetToolTipString(help)

setattr(self, name, button)

button_sizer.AddWindow(button, border=5, flag=wx.LEFT)

self.VariablesGrid = CustomGrid(self, size=wx.Size(0, 150), style=wx.VSCROLL)

self.VariablesGrid.SetDropTarget(DebugVariableDropTarget(self))

self.VariablesGrid.Bind(wx.grid.EVT_GRID_CELL_RIGHT_CLICK,

self.OnVariablesGridCellRightClick)

main_sizer.AddWindow(self.VariablesGrid, flag=wx.GROW)

self.SetSizer(main_sizer)

self.HasNewData = False

self.Table = DebugVariableTable(self, [], GetDebugVariablesTableColnames())

self.VariablesGrid.SetTable(self.Table)

self.VariablesGrid.SetButtons({"Delete": self.DeleteButton,

"Up": self.UpButton,

"Down": self.DownButton})

def _AddVariable(new_row):

return self.VariablesGrid.GetGridCursorRow()

setattr(self.VariablesGrid, "_AddRow", _AddVariable)

def _DeleteVariable(row):

item = self.Table.GetItem(row)

self.RemoveDataConsumer(item)

self.Table.RemoveItem(row)

self.RefreshGrid()

setattr(self.VariablesGrid, "_DeleteRow", _DeleteVariable)

def _MoveVariable(row, move):

new_row = max(0, min(row + move, self.Table.GetNumberRows() - 1))

if new_row != row:

self.Table.MoveItem(row, new_row)

self.RefreshGrid()

return new_row

setattr(self.VariablesGrid, "_MoveRow", _MoveVariable)

self.VariablesGrid.SetRowLabelSize(0)

for col in range(self.Table.GetNumberCols()):

attr = wx.grid.GridCellAttr()

attr.SetAlignment(wx.ALIGN_RIGHT, wx.ALIGN_CENTER)

self.VariablesGrid.SetColAttr(col, attr)

self.VariablesGrid.SetColSize(col, 100)

self.Table.ResetView(self.VariablesGrid)

self.VariablesGrid.RefreshButtons()

def RefreshNewData(self):

if self.HasNewData:

self.HasNewData = False

self.RefreshGrid()

DebugViewer.RefreshNewData(self)

def RefreshGrid(self):

self.Freeze()

self.Table.ResetView(self.VariablesGrid)

self.VariablesGrid.RefreshButtons()

self.Thaw()

def UnregisterObsoleteData(self):

items = [(idx, item) for idx, item in enumerate(self.Table.GetData())]

items.reverse()

for idx, item in items:

iec_path = item.GetVariable().upper()

if self.GetDataType(iec_path) is None:

self.RemoveDataConsumer(item)

self.Table.RemoveItem(idx)

else:

self.AddDataConsumer(iec_path, item)

self.Freeze()

self.Table.ResetView(self.VariablesGrid)

self.VariablesGrid.RefreshButtons()

self.Thaw()

def ResetGrid(self):

self.DeleteDataConsumers()

self.Table.Empty()

self.Freeze()

self.Table.ResetView(self.VariablesGrid)

self.VariablesGrid.RefreshButtons()

self.Thaw()

def GetForceVariableMenuFunction(self, iec_path, item):

iec_type = self.GetDataType(iec_path)

def ForceVariableFunction(event):

if iec_type is not None:

dialog = ForceVariableDialog(self, iec_type, str(item.GetValue()))

if dialog.ShowModal() == wx.ID_OK:

self.ForceDataValue(iec_path, dialog.GetValue())

return ForceVariableFunction

def GetReleaseVariableMenuFunction(self, iec_path):

def ReleaseVariableFunction(event):

self.ReleaseDataValue(iec_path)

return ReleaseVariableFunction

def OnVariablesGridCellRightClick(self, event):

row, col = event.GetRow(), event.GetCol()

if self.Table.GetColLabelValue(col, False) == "Value":

iec_path = self.Table.GetValueByName(row, "Variable").upper()

menu = wx.Menu(title='')

new_id = wx.NewId()

AppendMenu(menu, help='', id=new_id, kind=wx.ITEM_NORMAL, text=_("Force value"))

self.Bind(wx.EVT_MENU, self.GetForceVariableMenuFunction(iec_path.upper(), self.Table.GetItem(row)), id=new_id)

new_id = wx.NewId()

AppendMenu(menu, help='', id=new_id, kind=wx.ITEM_NORMAL, text=_("Release value"))

self.Bind(wx.EVT_MENU, self.GetReleaseVariableMenuFunction(iec_path.upper()), id=new_id)

if self.Table.IsForced(row):

menu.Enable(new_id, True)

else:

menu.Enable(new_id, False)

self.PopupMenu(menu)

menu.Destroy()

event.Skip()

def InsertValue(self, iec_path, idx = None, force=False):

if idx is None:

idx = self.Table.GetNumberRows()

for item in self.Table.GetData():

if iec_path == item.GetVariable():

return

item = VariableTableItem(self, iec_path, "")

result = self.AddDataConsumer(iec_path.upper(), item)

if result is not None or force:

self.Table.InsertItem(idx, item)

self.RefreshGrid()

def GetDebugVariables(self):

return [item.GetVariable() for item in self.Table.GetData()]