dialogs/LDElementDialog.py
author Edouard Tisserant
Thu, 12 Jun 2014 18:15:04 +0200
changeset 1419 d6adca8b6697
parent 1370 ee795a8d4404
child 1493 6dbebfcec074
permissions -rw-r--r--
Updated tests/python : added derivated return type function declaration+call and re-enabled refrences to global FB interfaces
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#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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#This file is part of PLCOpenEditor, a library implementing an IEC 61131-3 editor
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#based on the plcopen standard. 
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#
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#Copyright (C) 2007: Edouard TISSERANT and Laurent BESSARD
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#
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#See COPYING file for copyrights details.
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#
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#This library is free software; you can redistribute it and/or
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#modify it under the terms of the GNU General Public
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#License as published by the Free Software Foundation; either
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#version 2.1 of the License, or (at your option) any later version.
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#
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#This library is distributed in the hope that it will be useful,
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#but WITHOUT ANY WARRANTY; without even the implied warranty of
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#MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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#General Public License for more details.
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#
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#You should have received a copy of the GNU General Public
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#License along with this library; if not, write to the Free Software
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#Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
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import wx
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from graphics.GraphicCommons import CONTACT_NORMAL, CONTACT_REVERSE, \
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    CONTACT_RISING, CONTACT_FALLING, COIL_NORMAL, COIL_REVERSE, COIL_SET, \
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    COIL_RESET, COIL_RISING, COIL_FALLING
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from graphics.LD_Objects import LD_Contact, LD_Coil
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from BlockPreviewDialog import BlockPreviewDialog
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#-------------------------------------------------------------------------------
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#                       Set Ladder Element Parmeters Dialog
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#-------------------------------------------------------------------------------
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"""
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Class that implements a dialog for defining parameters of a LD contact or coil
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graphic element
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"""
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class LDElementDialog(BlockPreviewDialog):
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    def __init__(self, parent, controller, tagname, type):
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        """
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        Constructor
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        @param parent: Parent wx.Window of dialog for modal
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        @param controller: Reference to project controller
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        @param tagname: Tagname of project POU edited
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        @param type: Type of LD element ('contact or 'coil')
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        """
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        BlockPreviewDialog.__init__(self, parent, controller, tagname, 
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              size=wx.Size(350, 280 if type == "contact" else 330),
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              title=(_("Edit Contact Values")
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                     if type == "contact"
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                     else _("Edit Coil Values")))
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        # Init common sizers
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        self._init_sizers(2, 0, 
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              (7 if type == "contact" else 9), None, 2, 1)
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        # Create label for LD element modifier
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        modifier_label = wx.StaticText(self, label=_('Modifier:'))
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        self.LeftGridSizer.AddWindow(modifier_label, border=5, 
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              flag=wx.GROW|wx.BOTTOM)
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        # Create radio buttons for selecting LD element modifier
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        self.ModifierRadioButtons = {}
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        first = True
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        element_modifiers = ([CONTACT_NORMAL, CONTACT_REVERSE, 
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                              CONTACT_RISING, CONTACT_FALLING]
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                             if type == "contact"
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                             else [COIL_NORMAL, COIL_REVERSE, COIL_SET,
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                                   COIL_RESET, COIL_RISING, COIL_FALLING])
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        modifiers_label = [_("Normal"), _("Negated")] + \
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                          ([_("Set"), _("Reset")] if type == "coil" else []) + \
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                          [_("Rising Edge"), _("Falling Edge")]
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        for modifier, label in zip(element_modifiers, modifiers_label):
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            radio_button = wx.RadioButton(self, label=label, 
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                  style=(wx.RB_GROUP if first else 0))
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            radio_button.SetValue(first)
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            self.Bind(wx.EVT_RADIOBUTTON, self.OnModifierChanged, radio_button)
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            self.LeftGridSizer.AddWindow(radio_button, flag=wx.GROW)
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            self.ModifierRadioButtons[modifier] = radio_button
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            first = False
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        # Create label for LD element variable
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        element_variable_label = wx.StaticText(self, label=_('Variable:'))
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        self.LeftGridSizer.AddWindow(element_variable_label, border=5,
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              flag=wx.GROW|wx.TOP)
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        # Create a combo box for defining LD element variable
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        self.ElementVariable = wx.ComboBox(self, style=wx.CB_SORT)
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        self.Bind(wx.EVT_COMBOBOX, self.OnVariableChanged, 
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                  self.ElementVariable)
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        self.LeftGridSizer.AddWindow(self.ElementVariable, border=5,
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             flag=wx.GROW|wx.TOP)
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        # Add preview panel and associated label to sizers
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        self.RightGridSizer.AddWindow(self.PreviewLabel, flag=wx.GROW)
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        self.RightGridSizer.AddWindow(self.Preview, flag=wx.GROW)
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        # Add buttons sizer to sizers
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        self.MainSizer.AddSizer(self.ButtonSizer, border=20, 
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              flag=wx.ALIGN_RIGHT|wx.BOTTOM|wx.LEFT|wx.RIGHT)
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        # Save LD element class
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        self.ElementClass = (LD_Contact if type == "contact" else LD_Coil)
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        # Extract list of variables defined in POU
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        self.RefreshVariableList()
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        # Set values in ElementVariable
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        for name, (var_type, value_type) in self.VariableList.iteritems():
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            # Only select BOOL variable and avoid input for coil
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            if (type == "contact" or var_type != "Input") and \
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               value_type == "BOOL":
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                self.ElementVariable.Append(name)
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        # Normal radio button is default control having keyboard focus
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        self.ModifierRadioButtons[element_modifiers[0]].SetFocus()
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    def GetElementModifier(self):
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        """
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        Return modifier selected for LD element
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        @return: Modifier selected (None if not found)
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        """
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        # Go through radio buttons and return modifier associated to the one
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        # that is selected
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        for modifier, control in self.ModifierRadioButtons.iteritems():
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            if control.GetValue():
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                return modifier
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        return None
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    def SetValues(self, values):
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        """
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        Set default LD element parameters
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        @param values: LD element parameters values
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        """
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        # For each parameters defined, set corresponding control value
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        for name, value in values.items():
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            # Parameter is LD element variable
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            if name == "variable":
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                self.ElementVariable.SetValue(value)
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            # Set value of other controls
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            elif name == "modifier":
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                self.ModifierRadioButtons[value].SetValue(True)
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        # Refresh preview panel
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        self.RefreshPreview()
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    def GetValues(self):
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        """
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        Return LD element parameters defined in dialog
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        @return: {parameter_name: parameter_value,...}
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        """
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        values = {
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            "variable": self.ElementVariable.GetValue(),
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            "modifier": self.GetElementModifier()}
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        values["width"], values["height"] = self.Element.GetSize()
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        return values
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    def OnModifierChanged(self, event):
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        """
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        Called when LD element modifier changed
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        @param event: wx.RadioButtonEvent
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        """
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        self.RefreshPreview()
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        event.Skip()
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    def OnVariableChanged(self, event):
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        """
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        Called when LD element associated variable changed
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        @param event: wx.ComboBoxEvent
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        """
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        self.RefreshPreview()
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        event.Skip()
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    def RefreshPreview(self):
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        """
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        Refresh preview panel of graphic element
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        Override BlockPreviewDialog function
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        """
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        # Set graphic element displayed, creating a LD element
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        self.Element = self.ElementClass(
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                self.Preview, 
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                self.GetElementModifier(),
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                self.ElementVariable.GetValue())
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        # Call BlockPreviewDialog function
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        BlockPreviewDialog.RefreshPreview(self)