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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 types import *

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from Viewer import *

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if wx.VERSION >= (2, 8, 0):

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    import wx.aui

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    class SFC_MDIViewer(wx.aui.AuiMDIChildFrame):

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        def __init__(self, parent, tagname, window, controler):

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            wx.aui.AuiMDIChildFrame.__init__(self, parent, -1, title = "")

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            sizer = wx.BoxSizer(wx.HORIZONTAL)

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            self.Viewer = SFC_Viewer(self, tagname, window, controler)

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            sizer.AddWindow(self.Viewer, 1, border=0, flag=wx.GROW)

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            self.SetSizer(sizer)

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    45

        def GetViewer(self):

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            return self.Viewer

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class SFC_Viewer(Viewer):

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    def __init__(self, parent, tagname, window, controler):

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        Viewer.__init__(self, parent, tagname, window, controler)

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        self.CurrentLanguage = "SFC"

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    54

    def ConnectConnectors(self, start, end):

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        startpoint = [start.GetPosition(False), start.GetDirection()]

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        endpoint = [end.GetPosition(False), end.GetDirection()]

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        wire = Wire(self, startpoint, endpoint)

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        self.AddWire(wire)

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        start.Connect((wire, 0), False)

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        end.Connect((wire, -1), False)

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        wire.ConnectStartPoint(None, start)

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        wire.ConnectEndPoint(None, end)

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        return wire

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    65

    def CreateTransition(self, connector, next = None):

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        previous = connector.GetParentBlock()

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        id = self.GetNewId()

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        transition = SFC_Transition(self, "reference", "", 0, id)

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        pos = connector.GetPosition(False)

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        transition.SetPosition(pos.x, pos.y + SFC_WIRE_MIN_SIZE)

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        transition_connectors = transition.GetConnectors()

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        wire = self.ConnectConnectors(transition_connectors["input"], connector)

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        if isinstance(previous, SFC_Divergence):

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            previous.RefreshConnectedPosition(connector)

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        else:

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            previous.RefreshOutputPosition()

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        wire.SetPoints([wx.Point(pos.x, pos.y + GetWireSize(previous)), wx.Point(pos.x, pos.y)])

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        self.AddBlock(transition)

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        self.Controler.AddEditedElementTransition(self.TagName, id)

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        self.RefreshTransitionModel(transition)

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        if next:

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            wire = self.ConnectConnectors(next, transition_connectors["output"])

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            pos = transition_connectors["output"].GetPosition(False)

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            next_block = next.GetParentBlock()

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            next_pos = next.GetPosition(False)

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            transition.RefreshOutputPosition((0, pos.y + SFC_WIRE_MIN_SIZE - next_pos.y))

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            wire.SetPoints([wx.Point(pos.x, pos.y + SFC_WIRE_MIN_SIZE), wx.Point(pos.x, pos.y)])

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            if isinstance(next_block, SFC_Divergence):

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                next_block.RefreshPosition()

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            transition.RefreshOutputModel(True)

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        return transition

    92

    93

    def RemoveTransition(self, transition):

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        connectors = transition.GetConnectors()

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        input_wires = connectors["input"].GetWires()

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        if len(input_wires) != 1:

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            return

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        input_wire = input_wires[0][0]

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        previous = input_wire.EndConnected

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        input_wire.Clean()

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        self.RemoveWire(input_wire)

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        output_wires = connectors["output"].GetWires()

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        if len(output_wires) != 1:

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            return

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        output_wire = output_wires[0][0]

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        next = output_wire.StartConnected

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        output_wire.Clean()

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        self.RemoveWire(output_wire)

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        transition.Clean()

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        self.RemoveBlock(transition)

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        self.Controler.RemoveEditedElementInstance(self.TagName, transition.GetId())

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        wire = self.ConnectConnectors(next, previous)

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        return wire

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    def CreateStep(self, name, connector, next = None):

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        previous = connector.GetParentBlock()

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        id = self.GetNewId()

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        step = SFC_Step(self, name, False, id)

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        if next:

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            step.AddOutput()

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        min_width, min_height = step.GetMinSize()

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        pos = connector.GetPosition(False)

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        step.SetPosition(pos.x, pos.y + SFC_WIRE_MIN_SIZE)

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        step.SetSize(min_width, min_height)

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        step_connectors = step.GetConnectors()

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        wire = self.ConnectConnectors(step_connectors["input"], connector)

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        if isinstance(previous, SFC_Divergence):

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            previous.RefreshConnectedPosition(connector)

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        else:

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            previous.RefreshOutputPosition()

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        wire.SetPoints([wx.Point(pos.x, pos.y + GetWireSize(previous)), wx.Point(pos.x, pos.y)])

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        self.AddBlock(step)

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        self.Controler.AddEditedElementStep(self.TagName, id)

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        self.RefreshStepModel(step)

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        if next:

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            wire = self.ConnectConnectors(next, step_connectors["output"])

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            pos = step_connectors["output"].GetPosition(False)

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            next_block = next.GetParentBlock()

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            next_pos = next.GetPosition(False)

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            step.RefreshOutputPosition((0, pos.y + SFC_WIRE_MIN_SIZE - next_pos.y))

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            wire.SetPoints([wx.Point(pos.x, pos.y + SFC_WIRE_MIN_SIZE), wx.Point(pos.x, pos.y)])

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            if isinstance(next_block, SFC_Divergence):

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                next_block.RefreshPosition()

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            step.RefreshOutputModel(True)

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        return step

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   147

    def RemoveStep(self, step):

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        connectors = step.GetConnectors()

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        if connectors["input"]:

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            input_wires = connectors["input"].GetWires()

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            if len(input_wires) != 1:

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                return

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            input_wire = input_wires[0][0]

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            previous = input_wire.EndConnected

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            input_wire.Clean()

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            self.RemoveWire(input_wire)

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        else:

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            previous = None

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        if connectors["output"]:

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            output_wires = connectors["output"].GetWires()

   161

            if len(output_wires) != 1:

   162

                return

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            output_wire = output_wires[0][0]

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            next = output_wire.StartConnected

   165

            output_wire.Clean()

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            self.RemoveWire(output_wire)

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        else:

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            next = None

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        action = step.GetActionConnector()

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        if action:

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            self.DeleteActionBlock(action.GetParentBlock())

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        step.Clean()

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        self.RemoveBlock(step)

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        self.Controler.RemoveEditedElementInstance(self.TagName, step.GetId())

   175

        if next and previous:

   176

            wire = self.ConnectConnectors(next, previous)

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            return wire

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        else:

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            return None

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#-------------------------------------------------------------------------------

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#                          Mouse event functions

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#-------------------------------------------------------------------------------

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   185

    def OnViewerLeftDown(self, event):

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        if self.GetDrawingMode() == FREEDRAWING_MODE:

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            Viewer.OnViewerLeftDown(self, event)

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        elif self.Mode == MODE_SELECTION:

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            dc = self.GetLogicalDC()

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            pos = event.GetLogicalPosition(dc)

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            if event.ControlDown():

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                element = self.FindElement(pos, True)

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                if element and not self.IsWire(element):

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                    if isinstance(self.SelectedElement, Graphic_Group):

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                        self.SelectedElement.SelectElement(element)

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                    else:

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                        group = Graphic_Group(self)

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                        self.SelectedElement.SetSelected(False)

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                        group.SelectElement(self.SelectedElement)

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                        group.SelectElement(element)

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                        self.SelectedElement = group

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                    elements = self.SelectedElement.GetElements()

   203

                    if len(elements) == 0:

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                        self.SelectedElement = element

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                    elif len(elements) == 1:

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                        self.SelectedElement = elements[0]

   207

            else:

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                element = self.FindElement(pos)

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                if self.SelectedElement and self.SelectedElement != element:

   210

                    if self.IsWire(self.SelectedElement):

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                        self.SelectedElement.SetSelectedSegment(None)

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                    else:

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                        self.SelectedElement.SetSelected(False)

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                    self.SelectedElement = None

   215

                if element:

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                    self.SelectedElement = element

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                    self.SelectedElement.OnLeftDown(event, dc, self.Scaling)

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                else:

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                    self.rubberBand.Reset()

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                    self.rubberBand.OnLeftDown(event, dc, self.Scaling)

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        elif self.Mode == MODE_COMMENT:

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            self.rubberBand.Reset()

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            self.rubberBand.OnLeftDown(event, self.GetLogicalDC(), self.Scaling)

   225

        elif self.Mode == MODE_WIRE:

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            pos = GetScaledEventPosition(event, self.GetLogicalDC(), self.Scaling)

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            wire = Wire(self, [wx.Point(pos.x, pos.y), SOUTH], [wx.Point(pos.x, pos.y), NORTH])

   228

            wire.oldPos = pos

   229

            wire.Handle = (HANDLE_POINT, 0)

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            wire.ProcessDragging(0, 0)

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            wire.Handle = (HANDLE_POINT, 1)

   232

            self.AddWire(wire)

   233

            if self.SelectedElement:

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                self.SelectedElement.SetSelected(False)

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            self.SelectedElement = wire

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        event.Skip()

   237

   238

    def OnViewerLeftUp(self, event):

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        if self.GetDrawingMode() == FREEDRAWING_MODE:

   240

            Viewer.OnViewerLeftUp(self, event)

   241

        elif self.rubberBand.IsShown():

   242

            if self.Mode == MODE_SELECTION:

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                elements = self.SearchElements(self.rubberBand.GetCurrentExtent())

   244

                self.rubberBand.OnLeftUp(event, self.GetLogicalDC(), self.Scaling)

   245

                if len(elements) > 0:

   246

                    self.SelectedElement = Graphic_Group(self)

   247

                    self.SelectedElement.SetElements(elements)

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                    self.SelectedElement.SetSelected(True)

   249

            elif self.Mode == MODE_COMMENT:

   250

                bbox = self.rubberBand.GetCurrentExtent()

   251

                self.rubberBand.OnLeftUp(event, self.GetLogicalDC(), self.Scaling)

   252

                wx.CallAfter(self.AddComment, bbox)

   253

        elif self.Mode == MODE_INITIALSTEP:

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            wx.CallAfter(self.AddInitialStep, GetScaledEventPosition(event, self.GetLogicalDC(), self.Scaling))

   255

        elif self.Mode == MODE_SELECTION and self.SelectedElement:

   256

            if self.IsWire(self.SelectedElement):

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                self.SelectedElement.SetSelectedSegment(0)

   258

            else:

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                self.SelectedElement.OnLeftUp(event, self.GetLogicalDC(), self.Scaling)

   261

            wx.CallAfter(self.SetCursor, wx.NullCursor)

   262

        elif self.Mode == MODE_WIRE and self.SelectedElement:

   263

            self.SelectedElement.ResetPoints()

   264

            self.SelectedElement.OnMotion(event, self.GetLogicalDC(), self.Scaling)

   265

            self.SelectedElement.GeneratePoints()

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            self.SelectedElement.RefreshModel()

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            self.SelectedElement.SetSelected(True)

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        event.Skip()

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    def OnViewerRightUp(self, event):

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        if self.GetDrawingMode() == FREEDRAWING_MODE:

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            Viewer.OnViewerRightUp(self, event)

   273

        else:

   274

            dc = self.GetLogicalDC()

   275

            pos = event.GetLogicalPosition(dc)

   276

            element = self.FindElement(pos)

   277

            if element:

   278

                if self.SelectedElement and self.SelectedElement != element:

   279

                    self.SelectedElement.SetSelected(False)

   280

                self.SelectedElement = element

   281

                if self.IsWire(self.SelectedElement):

   282

                    self.SelectedElement.SetSelectedSegment(0)

   283

                else:

   284

                    self.SelectedElement.SetSelected(True)

   285

                    self.SelectedElement.OnRightUp(event, dc, self.Scaling)

   287

                wx.CallAfter(self.SetCursor, wx.NullCursor)

   288

        event.Skip()

   289

   290

    def OnViewerLeftDClick(self, event):

   291

        if self.GetDrawingMode() == FREEDRAWING_MODE:

   292

            Viewer.OnViewerLeftDClick(self, event)

   293

        elif self.Mode == MODE_SELECTION and self.SelectedElement:

   294

            self.SelectedElement.OnLeftDClick(event, self.GetLogicalDC(), self.Scaling)

   295

            self.Refresh()

   296

        event.Skip()

   297

   298

    def OnViewerMotion(self, event):

   299

        if self.GetDrawingMode() == FREEDRAWING_MODE:

   300

            Viewer.OnViewerMotion(self, event)

   301

        else:

   302

            if self.rubberBand.IsShown():

   303

                self.rubberBand.OnMotion(event, self.GetLogicalDC(), self.Scaling)

   304

            elif self.Mode == MODE_SELECTION and self.SelectedElement:

   305

                if not self.IsWire(self.SelectedElement) and not isinstance(self.SelectedElement, Graphic_Group):

   306

                    self.SelectedElement.OnMotion(event, self.GetLogicalDC(), self.Scaling)

   308

            elif self.Mode == MODE_WIRE and self.SelectedElement:

   309

                self.SelectedElement.ResetPoints()

   310

                self.SelectedElement.OnMotion(event, self.GetLogicalDC(), self.Scaling)

   311

                self.SelectedElement.GeneratePoints()

   313

            self.UpdateScrollPos(event)

   314

        event.Skip()

   315

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#-------------------------------------------------------------------------------

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#                          Keyboard event functions

   318

#-------------------------------------------------------------------------------

   319

   320

    def OnChar(self, event):

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        xpos, ypos = self.GetScrollPos(wx.HORIZONTAL), self.GetScrollPos(wx.VERTICAL)

   322

        xmax = self.GetScrollRange(wx.HORIZONTAL) - self.GetScrollThumb(wx.HORIZONTAL)

   323

        ymax = self.GetScrollRange(wx.VERTICAL) - self.GetScrollThumb(wx.VERTICAL)

   324

        keycode = event.GetKeyCode()

   325

        if self.Scaling:

   326

            scaling = self.Scaling

   327

        else:

   328

            scaling = (8, 8)

   329

        if keycode == wx.WXK_DELETE and self.SelectedElement:

   330

            self.SelectedElement.Delete()

   331

            self.SelectedElement = None

   332

            self.RefreshBuffer()

   333

            self.RefreshScrollBars()

   334

            self.Refresh()

   335

        elif keycode == wx.WXK_LEFT:

   336

            if event.ControlDown() and event.ShiftDown():

   337

                self.Scroll(0, ypos)

   338

            elif event.ControlDown():

   339

                event.Skip()

   340

            elif self.SelectedElement:

   341

                self.SelectedElement.Move(-scaling[0], 0)

   342

                self.SelectedElement.RefreshModel()

   343

                self.RefreshBuffer()

   344

                self.RefreshScrollBars()

   346

        elif keycode == wx.WXK_RIGHT:

   347

            if event.ControlDown() and event.ShiftDown():

   348

                self.Scroll(xmax, ypos)

   349

            elif event.ControlDown():

   350

                event.Skip()

   351

            elif self.SelectedElement:

   352

                self.SelectedElement.Move(scaling[0], 0)

   353

                self.SelectedElement.RefreshModel()

   354

                self.RefreshBuffer()

   355

                self.RefreshScrollBars()

   357

        elif keycode == wx.WXK_UP:

   358

            if event.ControlDown() and event.ShiftDown():

   359

                self.Scroll(xpos, 0)

   360

            elif event.ControlDown():

   361

                event.Skip()

   362

            elif self.SelectedElement:

   363

                self.SelectedElement.Move(0, -scaling[1])

   364

                self.SelectedElement.RefreshModel()

   365

                self.RefreshBuffer()

   366

                self.RefreshScrollBars()

   368

        elif keycode == wx.WXK_DOWN:

   369

            if event.ControlDown() and event.ShiftDown():

   370

                self.Scroll(xpos, ymax)

   371

            elif event.ControlDown():

   372

                event.Skip()

   373

            elif self.SelectedElement:

   374

                self.SelectedElement.Move(0, scaling[1])

   375

                self.SelectedElement.RefreshModel()

   376

                self.RefreshBuffer()

   377

                self.RefreshScrollBars()

   379

        else:

   380

            event.Skip()

   381

   382

#-------------------------------------------------------------------------------

   383

#                          Adding element functions

   384

#-------------------------------------------------------------------------------

   385

   386

    def AddInitialStep(self, pos):

   387

        dialog = StepNameDialog(self.ParentWindow, "Add a new initial step", "Please enter step name", "", wx.OK|wx.CANCEL)

   388

        dialog.SetPouNames(self.Controler.GetProjectPouNames())

   389

        dialog.SetVariables(self.Controler.GetEditedElementInterfaceVars(self.TagName))

   390

        dialog.SetStepNames([block.GetName() for block in self.Blocks if isinstance(block, SFC_Step)])

   391

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

   392

            id = self.GetNewId()

   393

            name = dialog.GetValue()

   394

            step = SFC_Step(self, name, True, id)

   395

            min_width, min_height = step.GetMinSize()

   396

            step.SetPosition(pos.x, pos.y)

   397

            width, height = step.GetSize()

   398

            step.SetSize(max(min_width, width), max(min_height, height))

   399

            self.AddBlock(step)

   400

            self.Controler.AddEditedElementStep(self.TagName, id)

   401

            self.RefreshStepModel(step)

   402

            self.RefreshBuffer()

   403

            self.RefreshScrollBars()

   404

            self.Refresh()

   405

        dialog.Destroy()

   406

   407

    def AddStep(self):

   408

        if self.SelectedElement in self.Wires or isinstance(self.SelectedElement, SFC_Step):

   409

            dialog = StepNameDialog(self.ParentWindow, "Add a new step", "Please enter step name", "", wx.OK|wx.CANCEL)

   410

            dialog.SetPouNames(self.Controler.GetProjectPouNames())

   411

            dialog.SetVariables(self.Controler.GetEditedElementInterfaceVars(self.TagName))

   412

            dialog.SetStepNames([block.GetName() for block in self.Blocks if isinstance(block, SFC_Step)])

   413

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

   414

                name = dialog.GetValue()

   415

                if self.IsWire(self.SelectedElement):

   416

                    self.SelectedElement.SetSelectedSegment(None)

   417

                    previous = self.SelectedElement.EndConnected

   418

                    next = self.SelectedElement.StartConnected

   419

                    self.SelectedElement.Clean()

   420

                    self.RemoveWire(self.SelectedElement)

   421

                else:

   422

                    connectors = self.SelectedElement.GetConnectors()

   423

                    if connectors["output"]:

   424

                        previous = connectors["output"]

   425

                        wires = previous.GetWires()

   426

                        if len(wires) != 1:

   427

                            return

   428

                        wire = wires[0][0]

   429

                        next = wire.StartConnected

   430

                        wire.Clean()

   431

                        self.RemoveWire(wire)

   432

                    else:

   433

                        self.SelectedElement.AddOutput()

   434

                        connectors = self.SelectedElement.GetConnectors()

   435

                        self.RefreshStepModel(self.SelectedElement)

   436

                        previous = connectors["output"]

   437

                        next = None

   438

                previous_block = previous.GetParentBlock()

   439

                if isinstance(previous_block, SFC_Step) or isinstance(previous_block, SFC_Divergence) and previous_block.GetType() in [SELECTION_DIVERGENCE, SELECTION_CONVERGENCE]:

   440

                    transition = self.CreateTransition(previous)

   441

                    transition_connectors = transition.GetConnectors()

   442

                    step = self.CreateStep(name, transition_connectors["output"], next)

   443

                else:

   444

                    step = self.CreateStep(name, previous)

   445

                    step.AddOutput()

   446

                    step.RefreshModel()

   447

                    step_connectors = step.GetConnectors()

   448

                    transition = self.CreateTransition(step_connectors["output"], next)

   449

                if self.IsWire(self.SelectedElement):

   450

                    self.SelectedElement = wire

   451

                    self.SelectedElement.SetSelectedSegment(0)

   452

                else:

   453

                    self.SelectedElement.SetSelected(False)

   454

                    self.SelectedElement = step

   455

                    self.SelectedElement.SetSelected(True)

   456

                self.RefreshBuffer()

   457

                self.RefreshScrollBars()

   458

                self.Refresh()

   459

            dialog.Destroy()

   460

   461

    def AddStepAction(self):

   462

        if isinstance(self.SelectedElement, SFC_Step):

   463

            connectors = self.SelectedElement.GetConnectors()

   464

            if not connectors["action"]:

   465

                dialog = ActionBlockDialog(self.ParentWindow)

   466

                dialog.SetQualifierList(self.Controler.GetQualifierTypes())

   467

                dialog.SetActionList(self.Controler.GetEditedElementActions(self.TagName))

   468

                dialog.SetVariableList(self.Controler.GetEditedElementInterfaceVars(self.TagName))

   469

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

   470

                    actions = dialog.GetValues()

   471

                    self.SelectedElement.AddAction()

   472

                    self.RefreshStepModel(self.SelectedElement)

   473

                    connectors = self.SelectedElement.GetConnectors()

   474

                    pos = connectors["action"].GetPosition(False)

   475

                    id = self.GetNewId()

   476

                    actionblock = SFC_ActionBlock(self, [], id)

   477

                    actionblock.SetPosition(pos.x + SFC_WIRE_MIN_SIZE, pos.y - SFC_STEP_DEFAULT_SIZE[1] / 2)

   478

                    actionblock_connector = actionblock.GetConnector()

   479

                    wire = self.ConnectConnectors(actionblock_connector, connectors["action"])

   480

                    wire.SetPoints([wx.Point(pos.x + SFC_WIRE_MIN_SIZE, pos.y), wx.Point(pos.x, pos.y)])

   481

                    actionblock.SetActions(actions)

   482

                    self.AddBlock(actionblock)

   483

                    self.Controler.AddEditedElementActionBlock(self.TagName, id)

   484

                    self.RefreshActionBlockModel(actionblock)

   485

                    self.RefreshBuffer()

   486

                    self.RefreshScrollBars()

   487

                    self.Refresh()

   488

                dialog.Destroy()

   489

   490

    def AddDivergence(self):

   491

        if self.SelectedElement in self.Wires or isinstance(self.SelectedElement, Graphic_Group) or isinstance(self.SelectedElement, SFC_Step):        

   492

            dialog = DivergenceCreateDialog(self.ParentWindow)

   493

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

   494

                value = dialog.GetValues()

   495

                if value["type"] == SELECTION_DIVERGENCE:

   496

                    if self.SelectedElement in self.Wires and isinstance(self.SelectedElement.EndConnected.GetParentBlock(), SFC_Step):

   497

                        self.SelectedElement.SetSelectedSegment(None)

   498

                        previous = self.SelectedElement.EndConnected

   499

                        next = self.SelectedElement.StartConnected

   500

                        self.SelectedElement.Clean()

   501

                        self.RemoveWire(self.SelectedElement)

   502

                        self.SelectedElement = None

   503

                    elif isinstance(self.SelectedElement, SFC_Step):

   504

                        connectors = self.SelectedElement.GetConnectors()

   505

                        if connectors["output"]: