dialogs/ConnectionDialog.py
author Andrey Skvortsov <andrej.skvortzov@gmail.com>
Wed, 09 Aug 2017 14:34:28 +0300
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child 1730 64d8f52bc8c8
permissions -rwxr-xr-x
ignore built documentation
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#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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# This file is part of Beremiz, a Integrated Development Environment for
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# programming IEC 61131-3 automates supporting plcopen standard and CanFestival.
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#
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# Copyright (C) 2007: Edouard TISSERANT and Laurent BESSARD
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# Copyright (C) 2017: Andrey Skvortsov <andrej.skvortzov@gmail.com>
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#
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# See COPYING file for copyrights details.
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License
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# as published by the Free Software Foundation; either version 2
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# of the License, or (at your option) any later version.
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#
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# This program 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
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# GNU 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 License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
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import wx
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from graphics.GraphicCommons import CONNECTOR, CONTINUATION
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from graphics.FBD_Objects import FBD_Connector
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from BlockPreviewDialog import BlockPreviewDialog
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#-------------------------------------------------------------------------------
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#                       Set Connection Parameters Dialog
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#-------------------------------------------------------------------------------
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"""
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Class that implements a dialog for defining parameters of a connection graphic
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element
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"""
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class ConnectionDialog(BlockPreviewDialog):
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    def __init__(self, parent, controller, tagname, apply_button=False):
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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 apply_button: Enable button for applying connector modification
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        to all connector having the same name in POU (default: False)
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        """
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        BlockPreviewDialog.__init__(self, parent, controller, tagname, 
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              title=_('Connection Properties'))
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        # Init common sizers
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        self._init_sizers(2, 0, 7, 1, 0, None)
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        # Create label for connection type
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        type_label = wx.StaticText(self, label=_('Type:'))
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        self.LeftGridSizer.AddWindow(type_label, flag=wx.GROW)
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        # Create radio buttons for selecting connection type
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        self.TypeRadioButtons = {}
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        first = True
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        for type, label in [(CONNECTOR, _('Connector')),
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                            (CONTINUATION, _('Continuation'))]:
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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.OnTypeChanged, radio_button)
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            self.LeftGridSizer.AddWindow(radio_button, flag=wx.GROW)
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            self.TypeRadioButtons[type] = radio_button
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            first = False
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        # Create label for connection name
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        name_label = wx.StaticText(self, label=_('Name:'))
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        self.LeftGridSizer.AddWindow(name_label, flag=wx.GROW)
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        # Create text control for defining connection name
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        self.ConnectionName = wx.TextCtrl(self)
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        self.ConnectionName.SetMinSize(wx.Size(200,-1))
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        self.Bind(wx.EVT_TEXT, self.OnNameChanged, self.ConnectionName)
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        self.LeftGridSizer.AddWindow(self.ConnectionName, flag=wx.GROW)
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        # Add preview panel and associated label to sizers
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        self.Preview.SetMinSize(wx.Size(-1,100))
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        self.LeftGridSizer.AddWindow(self.PreviewLabel, flag=wx.GROW)
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        self.LeftGridSizer.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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        self.ColumnSizer.RemoveSizer(self.RightGridSizer)
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        # Add button for applying connection name modification to all connection
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        # of POU
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        if apply_button:
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            self.ApplyToAllButton = wx.Button(self, label=_("Propagate Name"))
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            self.ApplyToAllButton.SetToolTipString(
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                _("Apply name modification to all continuations with the same name"))
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            self.Bind(wx.EVT_BUTTON, self.OnApplyToAll, self.ApplyToAllButton)
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            self.ButtonSizer.AddWindow(self.ApplyToAllButton, flag=wx.LEFT)
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        else:
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            self.ConnectionName.ChangeValue(
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                controller.GenerateNewName(
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                        tagname, None, "Connection%d", 0))
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        self.Fit()
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        # Connector radio button is default control having keyboard focus
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        self.TypeRadioButtons[CONNECTOR].SetFocus()
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    def GetConnectionType(self):
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        """
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        Return type selected for connection
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        @return: Type selected (CONNECTOR or CONTINUATION)
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        """
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        return (CONNECTOR
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                if self.TypeRadioButtons[CONNECTOR].GetValue()
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                else CONTINUATION)
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    def SetValues(self, values):
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        """
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        Set default connection parameters
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        @param values: Connection 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 connection type
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            if name == "type":
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                self.TypeRadioButtons[value].SetValue(True)
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            # Parameter is connection name
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            elif name == "name":
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                self.ConnectionName.SetValue(value)
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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 connection 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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            "type": self.GetConnectionType(),
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            "name": self.ConnectionName.GetValue()}
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        values["width"], values["height"] = self.Element.GetSize()
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        return values
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    def TestConnectionName(self):
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        """
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        Test that connection name is valid
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        @return: True if connection name is valid
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        """
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        message = None
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        # Get connection name typed by user
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        connection_name = self.ConnectionName.GetValue()
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        # Test that a name have been defined
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        if connection_name == "":
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            message = _("Form isn't complete. Name must be filled!")
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        # If an error have been identify, show error message dialog
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        if message is not None:
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            self.ShowErrorMessage(message)
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            # Test failed
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            return False
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        # Return result of element name test
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        return self.TestElementName(connection_name)
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    def OnOK(self, event):
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        """
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        Called when dialog OK button is pressed
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        Test if connection name is valid
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        @param event: wx.Event from OK button
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        """
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        # Close dialog if connection name is valid
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        if self.TestConnectionName():
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            self.EndModal(wx.ID_OK)
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    def OnApplyToAll(self, event):
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        """
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        Called when Apply To All button is pressed
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        Test if connection name is valid
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        @param event: wx.Event from OK button
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        """
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        # Close dialog if connection name is valid
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        if self.TestConnectionName():
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            self.EndModal(wx.ID_YESTOALL)
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    def OnTypeChanged(self, event):
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        """
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        Called when connection type 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 OnNameChanged(self, event):
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        """
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        Called when connection name value changed
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        @param event: wx.TextEvent
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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 FBD connection element
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        self.Element = FBD_Connector(self.Preview, 
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                self.GetConnectionType(),
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                self.ConnectionName.GetValue())
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        # Call BlockPreviewDialog function
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        BlockPreviewDialog.RefreshPreview(self)
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