dialogs/LDElementDialog.py
author Andrey Skvortsov <andrej.skvortzov@gmail.com>
Mon, 18 Apr 2016 18:56:51 +0300
changeset 1478 69fe0b81e951
parent 1370 ee795a8d4404
child 1493 6dbebfcec074
permissions -rw-r--r--
make attribute CFLAGS and LDFLAGS optional and add default empty value

Actually CFLAGS and LDFLAGS are not required and can be empty.
Without default empty value if target platform in project settings was
set to "Linux" CFLAGS and LDFLAGS was initialized with NoneType.
The result was broken build and it wasn't to save/load project with
such settings.

Traceback (most recent call last):
File "/home/developer/WorkData/PLC/beremiz/beremiz/ProjectController.py", line 956, in _Build
if not builder.build() :
File "/home/developer/WorkData/PLC/beremiz/beremiz/targets/toolchain_gcc.py", line 96, in build
Builder_CFLAGS = ' '.join(self.getBuilderCFLAGS())
TypeError: sequence item 0: expected string, NoneType found
#!/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) 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

from graphics.GraphicCommons import CONTACT_NORMAL, CONTACT_REVERSE, \
    CONTACT_RISING, CONTACT_FALLING, COIL_NORMAL, COIL_REVERSE, COIL_SET, \
    COIL_RESET, COIL_RISING, COIL_FALLING
from graphics.LD_Objects import LD_Contact, LD_Coil
from BlockPreviewDialog import BlockPreviewDialog

#-------------------------------------------------------------------------------
#                       Set Ladder Element Parmeters Dialog
#-------------------------------------------------------------------------------

"""
Class that implements a dialog for defining parameters of a LD contact or coil
graphic element
"""

class LDElementDialog(BlockPreviewDialog):
    
    def __init__(self, parent, controller, tagname, type):
        """
        Constructor
        @param parent: Parent wx.Window of dialog for modal
        @param controller: Reference to project controller
        @param tagname: Tagname of project POU edited
        @param type: Type of LD element ('contact or 'coil')
        """
        BlockPreviewDialog.__init__(self, parent, controller, tagname, 
              size=wx.Size(350, 280 if type == "contact" else 330),
              title=(_("Edit Contact Values")
                     if type == "contact"
                     else _("Edit Coil Values")))
        
        # Init common sizers
        self._init_sizers(2, 0, 
              (7 if type == "contact" else 9), None, 2, 1)
        
        # Create label for LD element modifier
        modifier_label = wx.StaticText(self, label=_('Modifier:'))
        self.LeftGridSizer.AddWindow(modifier_label, border=5, 
              flag=wx.GROW|wx.BOTTOM)
        
        # Create radio buttons for selecting LD element modifier
        self.ModifierRadioButtons = {}
        first = True
        element_modifiers = ([CONTACT_NORMAL, CONTACT_REVERSE, 
                              CONTACT_RISING, CONTACT_FALLING]
                             if type == "contact"
                             else [COIL_NORMAL, COIL_REVERSE, COIL_SET,
                                   COIL_RESET, COIL_RISING, COIL_FALLING])
        modifiers_label = [_("Normal"), _("Negated")] + \
                          ([_("Set"), _("Reset")] if type == "coil" else []) + \
                          [_("Rising Edge"), _("Falling Edge")]
        
        for modifier, label in zip(element_modifiers, modifiers_label):
            radio_button = wx.RadioButton(self, label=label, 
                  style=(wx.RB_GROUP if first else 0))
            radio_button.SetValue(first)
            self.Bind(wx.EVT_RADIOBUTTON, self.OnModifierChanged, radio_button)
            self.LeftGridSizer.AddWindow(radio_button, flag=wx.GROW)
            self.ModifierRadioButtons[modifier] = radio_button
            first = False
        
        # Create label for LD element variable
        element_variable_label = wx.StaticText(self, label=_('Variable:'))
        self.LeftGridSizer.AddWindow(element_variable_label, border=5,
              flag=wx.GROW|wx.TOP)
        
        # Create a combo box for defining LD element variable
        self.ElementVariable = wx.ComboBox(self, style=wx.CB_SORT)
        self.Bind(wx.EVT_COMBOBOX, self.OnVariableChanged, 
                  self.ElementVariable)
        self.LeftGridSizer.AddWindow(self.ElementVariable, border=5,
             flag=wx.GROW|wx.TOP)
        
        # Add preview panel and associated label to sizers
        self.RightGridSizer.AddWindow(self.PreviewLabel, flag=wx.GROW)
        self.RightGridSizer.AddWindow(self.Preview, flag=wx.GROW)
        
        # Add buttons sizer to sizers
        self.MainSizer.AddSizer(self.ButtonSizer, border=20, 
              flag=wx.ALIGN_RIGHT|wx.BOTTOM|wx.LEFT|wx.RIGHT)
        
        # Save LD element class
        self.ElementClass = (LD_Contact if type == "contact" else LD_Coil)
        
        # Extract list of variables defined in POU
        self.RefreshVariableList()
        
        # Set values in ElementVariable
        for name, (var_type, value_type) in self.VariableList.iteritems():
            # Only select BOOL variable and avoid input for coil
            if (type == "contact" or var_type != "Input") and \
               value_type == "BOOL":
                self.ElementVariable.Append(name)
        
        # Normal radio button is default control having keyboard focus
        self.ModifierRadioButtons[element_modifiers[0]].SetFocus()
    
    def GetElementModifier(self):
        """
        Return modifier selected for LD element
        @return: Modifier selected (None if not found)
        """
        # Go through radio buttons and return modifier associated to the one
        # that is selected
        for modifier, control in self.ModifierRadioButtons.iteritems():
            if control.GetValue():
                return modifier
        return None

    def SetValues(self, values):
        """
        Set default LD element parameters
        @param values: LD element parameters values
        """
        # For each parameters defined, set corresponding control value
        for name, value in values.items():
            
            # Parameter is LD element variable
            if name == "variable":
                self.ElementVariable.SetValue(value)
            
            # Set value of other controls
            elif name == "modifier":
                self.ModifierRadioButtons[value].SetValue(True)
        
        # Refresh preview panel
        self.RefreshPreview()

    def GetValues(self):
        """
        Return LD element parameters defined in dialog
        @return: {parameter_name: parameter_value,...}
        """
        values = {
            "variable": self.ElementVariable.GetValue(),
            "modifier": self.GetElementModifier()}
        values["width"], values["height"] = self.Element.GetSize()
        return values

    def OnModifierChanged(self, event):
        """
        Called when LD element modifier changed
        @param event: wx.RadioButtonEvent
        """
        self.RefreshPreview()
        event.Skip()

    def OnVariableChanged(self, event):
        """
        Called when LD element associated variable changed
        @param event: wx.ComboBoxEvent
        """
        self.RefreshPreview()
        event.Skip()

    def RefreshPreview(self):
        """
        Refresh preview panel of graphic element
        Override BlockPreviewDialog function
        """
        # Set graphic element displayed, creating a LD element
        self.Element = self.ElementClass(
                self.Preview, 
                self.GetElementModifier(),
                self.ElementVariable.GetValue())
        
        # Call BlockPreviewDialog function
        BlockPreviewDialog.RefreshPreview(self)