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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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#

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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 LEFTRAIL, RIGHTRAIL, LD_LINE_SIZE

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from graphics.LD_Objects import LD_PowerRail

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from BlockPreviewDialog import BlockPreviewDialog

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

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#                    Set Ladder Power Rail Parameters Dialog

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

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"""

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Class that implements a dialog for defining parameters of a power rail graphic

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element

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"""

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class LDPowerRailDialog(BlockPreviewDialog):

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    def __init__(self, parent, controller, tagname):

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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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        """

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        BlockPreviewDialog.__init__(self, parent, controller, tagname,

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        # Init common sizers

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        self._init_sizers(2, 0, 5, None, 2, 1)

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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 power rail type

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        self.TypeRadioButtons = {}

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        first = True

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        for type, label in [(LEFTRAIL, _('Left PowerRail')),

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                            (RIGHTRAIL, _('Right PowerRail'))]:

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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 power rail pin number

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        pin_number_label = wx.StaticText(self, label=_('Pin number:'))

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        self.LeftGridSizer.AddWindow(pin_number_label, flag=wx.GROW)

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        # Create spin control for defining power rail pin number

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        self.PinNumber = wx.SpinCtrl(self, min=1, max=50,

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              style=wx.SP_ARROW_KEYS)

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        self.PinNumber.SetValue(1)

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        self.Bind(wx.EVT_SPINCTRL, self.OnPinNumberChanged, self.PinNumber)

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        self.LeftGridSizer.AddWindow(self.PinNumber, flag=wx.GROW)

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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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        # Left Power Rail radio button is default control having keyboard focus

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        self.TypeRadioButtons[LEFTRAIL].SetFocus()

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    def GetMinElementSize(self):

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        """

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        Get minimal graphic element size

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        @return: Tuple containing minimal size (width, height) or None if no

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        element defined

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        """

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        return self.Element.GetMinSize(True)

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    def GetPowerRailType(self):

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        """

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        Return type selected for power rail

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        @return: Type selected (LEFTRAIL or RIGHTRAIL)

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        """

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        return (LEFTRAIL

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                if self.TypeRadioButtons[LEFTRAIL].GetValue()

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                else RIGHTRAIL)

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    def SetValues(self, values):

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        """

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        Set default power rail parameters

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        @param values: Power rail 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 power rail type

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            if name == "type":

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                self.TypeRadioButtons[value].SetValue(True)

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            # Parameter is power rail pin number

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            elif name == "pin_number":

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                self.PinNumber.SetValue(value)

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    def GetValues(self):

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        """

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        Return power rail 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.GetPowerRailType(),

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            "pin_number": self.PinNumber.GetValue()}

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        values["width"], values["height"] = self.Element.GetSize()

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        return values

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    def OnTypeChanged(self, event):

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        """

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        Called when power rail 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 OnPinNumberChanged(self, event):

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        """

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        Called when power rail pin number value changed

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        @param event: wx.SpinEvent

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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 power rail element

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        self.Element = LD_PowerRail(self.Preview, 

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                self.GetPowerRailType(), 

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                connectors = self.PinNumber.GetValue())

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        # Call BlockPreviewDialog function

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        BlockPreviewDialog.RefreshPreview(self)