dialogs/SFCTransitionDialog.py
author Edouard Tisserant
Wed, 01 Jul 2020 10:36:20 +0200
changeset 2686 703ebf57508a
parent 2591 5f685bcd3ad6
child 3303 0ffb41625592
permissions -rw-r--r--
Modbus and Bacnet websettings : Rename variables and functions to avoid name collisions.

Websettings for modbus and bacnet are now passed to runtime as python files loaded (execfile) at init of PLCObject with the same globals.
Because if this, same names used in previously different modules now colide.
#!/usr/bin/env python
# -*- coding: utf-8 -*-

# This file is part of Beremiz, a Integrated Development Environment for
# programming IEC 61131-3 automates supporting plcopen standard and CanFestival.
#
# Copyright (C) 2007: Edouard TISSERANT and Laurent BESSARD
# Copyright (C) 2017: Andrey Skvortsov <andrej.skvortzov@gmail.com>
#
# See COPYING file for copyrights details.
#
# This program 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
# of the License, or (at your option) any later version.
#
# This program 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 program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.

from __future__ import absolute_import
import wx

from graphics.SFC_Objects import SFC_Transition
from dialogs.BlockPreviewDialog import BlockPreviewDialog

# -------------------------------------------------------------------------------
#                        Set Transition Parameters Dialog
# -------------------------------------------------------------------------------


class SFCTransitionDialog(BlockPreviewDialog):
    """
    Class that implements a dialog for defining parameters of a transition graphic
    element
    """

    def __init__(self, parent, controller, tagname, connection=True):
        """
        Constructor
        @param parent: Parent wx.Window of dialog for modal
        @param controller: Reference to project controller
        @param tagname: Tagname of project POU edited
        @param connection: True if transition value can be defined by a
        connection (default: True)
        """
        BlockPreviewDialog.__init__(self, parent, controller, tagname,
                                    title=_('Edit transition'))

        # Init common sizers
        self._init_sizers(2, 0, 8, None, 2, 1)

        # Create label for transition type
        type_label = wx.StaticText(self, label=_('Type:'))
        self.LeftGridSizer.AddWindow(type_label, flag=wx.GROW)

        # Create combo box for selecting reference value
        reference = wx.ComboBox(self, style=wx.CB_READONLY)
        reference.Append("")
        for transition in controller.GetEditedElementTransitions(tagname):
            reference.Append(transition)
        self.Bind(wx.EVT_COMBOBOX, self.OnReferenceChanged, reference)

        # Create Text control for defining inline value
        inline = wx.TextCtrl(self)
        self.Bind(wx.EVT_TEXT, self.OnInlineChanged, inline)

        # Create radio buttons for selecting power rail type
        self.TypeRadioButtons = {}
        first = True
        for type, label, control in [('reference', _('Reference'), reference),
                                     ('inline', _('Inline'), inline),
                                     ('connection', _('Connection'), None)]:
            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.OnTypeChanged, radio_button)
            self.LeftGridSizer.AddWindow(radio_button, flag=wx.GROW)
            if control is not None:
                control.Enable(first)
                self.LeftGridSizer.AddWindow(control, flag=wx.GROW)
            self.TypeRadioButtons[type] = (radio_button, control)
            first = False

        # Create label for transition priority
        priority_label = wx.StaticText(self, label=_('Priority:'))
        self.LeftGridSizer.AddWindow(priority_label, flag=wx.GROW)

        # Create spin control for defining priority value
        self.Priority = wx.SpinCtrl(self, min=0, style=wx.SP_ARROW_KEYS)
        self.Bind(wx.EVT_TEXT, self.OnPriorityChanged, self.Priority)
        self.LeftGridSizer.AddWindow(self.Priority, flag=wx.GROW)

        # 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)

        self.Fit()

        # Reference radio button is default control having keyboard focus
        self.TypeRadioButtons["reference"][0].SetFocus()

    def GetTransitionType(self):
        """
        Return type selected for SFC transition and associated value
        @return: Type selected and associated value (None if no value)
        """
        # Go through radio buttons and return type and value associated to the
        # one that is selected
        for type, (radio, control) in self.TypeRadioButtons.iteritems():
            if radio.GetValue():
                if isinstance(control, wx.ComboBox):
                    return type, control.GetStringSelection()
                elif isinstance(control, wx.TextCtrl):
                    return type, control.GetValue()
                else:
                    return type, None
        return None, None

    def SetValues(self, values):
        """
        Set default SFC transition parameters
        @param values: Transition parameters values
        """
        # Extract transition value according to type
        type_value = values.get("value", None)

        # For each parameters defined, set corresponding control value
        for name, value in values.items():

            # Parameter is SFC transition priority
            if name == "priority":
                self.Priority.SetValue(values["priority"])

            # Parameter is SFC transition type
            elif name == "type":
                for type, (radio, control) in self.TypeRadioButtons.iteritems():
                    radio.SetValue(type == value)
                    if control is not None:
                        # Enable associated control to type and set value
                        control.Enable(type == value)
                        if type == value:
                            if isinstance(control, wx.ComboBox):
                                control.SetStringSelection(type_value)
                            elif isinstance(control, wx.TextCtrl):
                                control.ChangeValue(type_value)

        # Refresh preview panel
        self.RefreshPreview()

    def GetValues(self):
        """
        Return SFC transition parameters defined in dialog
        @return: {parameter_name: parameter_value,...}
        """
        values = {"priority": self.Priority.GetValue()}
        values["type"], values["value"] = self.GetTransitionType()
        values["width"], values["height"] = self.Element.GetSize()
        return values

    def OnOK(self, event):
        """
        Called when dialog OK button is pressed
        Test if parameters defined are valid
        @param event: wx.Event from OK button
        """
        message = None

        # Get transition type and value associated
        type, value = self.GetTransitionType()

        # Test that value associated to type is defined
        if type != "connection" and value == "":
            message = _("Form isn't complete. %s must be filled!") % type

        # Show error message if an error is detected
        if message is not None:
            self.ShowErrorMessage(message)

        else:
            # Call BlockPreviewDialog function
            BlockPreviewDialog.OnOK(self, event)

    def OnTypeChanged(self, event):
        """
        Called when transition type changed
        @param event: wx.RadioButtonEvent
        """
        # Refresh sensibility of control associated to transition types
        for _type, (radio, control) in self.TypeRadioButtons.iteritems():
            if control is not None:
                control.Enable(radio.GetValue())

        # Refresh preview panel
        self.RefreshPreview()
        event.Skip()

    def OnReferenceChanged(self, event):
        """
        Called when SFC transition reference value changed
        @param event: wx.ComboBoxEvent
        """
        self.RefreshPreview()
        event.Skip()

    def OnInlineChanged(self, event):
        """
        Called when SFC transition inline value changed
        @param event: wx.TextEvent
        """
        self.RefreshPreview()
        event.Skip()

    def OnPriorityChanged(self, event):
        """
        Called when block inputs number changed
        @param event: wx.SpinEvent
        """
        self.RefreshPreview()
        event.Skip()

    def DrawPreview(self):
        """
        Refresh preview panel of graphic element
        Override BlockPreviewDialog function
        """
        # Set graphic element displayed, creating a SFC transition
        self.Element = SFC_Transition(self.Preview)
        self.Element.SetType(*self.GetTransitionType())
        self.Element.SetPriority(self.Priority.GetValue())

        # Call BlockPreviewDialog function
        BlockPreviewDialog.DrawPreview(self)