#!/usr/bin/env python
# -*- coding: utf-8 -*-

#This file is part of PLCOpenEditor, a library implementing an IEC 61131-3 editor
#based on the plcopen standard. 
#
#Copyright (C) 2007: Edouard TISSERANT and Laurent BESSARD
#
#See COPYING file for copyrights details.
#
#This library 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 2.1 of the License, or (at your option) any later version.
#
#This library 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 library; if not, write to the Free Software
#Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

import wx

from graphics import *

#-------------------------------------------------------------------------------
#                          Create New Connection Dialog
#-------------------------------------------------------------------------------

[ID_CONNECTIONDIALOG, ID_CONNECTIONDIALOGSPACER, 
 ID_CONNECTIONDIALOGNAME, ID_CONNECTIONDIALOGRADIOBUTTON1, 
 ID_CONNECTIONDIALOGRADIOBUTTON2, ID_CONNECTIONDIALOGPREVIEW,
 ID_CONNECTIONDIALOGSTATICTEXT1, ID_CONNECTIONDIALOGSTATICTEXT2, 
 ID_CONNECTIONDIALOGSTATICTEXT3, 
] = [wx.NewId() for _init_ctrls in range(9)]

class ConnectionDialog(wx.Dialog):
    
    if wx.VERSION < (2, 6, 0):
        def Bind(self, event, function, id = None):
            if id is not None:
                event(self, id, function)
            else:
                event(self, function)
    
    def _init_coll_flexGridSizer1_Items(self, parent):
        parent.AddSizer(self.MainSizer, 0, border=20, flag=wx.GROW|wx.TOP|wx.LEFT|wx.RIGHT)
        parent.AddSizer(self.ButtonSizer, 0, border=20, flag=wx.ALIGN_RIGHT|wx.BOTTOM|wx.LEFT|wx.RIGHT)
        
    def _init_coll_flexGridSizer1_Growables(self, parent):
        parent.AddGrowableCol(0)
        parent.AddGrowableRow(0)
    
    def _init_coll_MainSizer_Items(self, parent):
        parent.AddSizer(self.LeftGridSizer, 1, border=5, flag=wx.GROW|wx.RIGHT)
        parent.AddSizer(self.RightGridSizer, 1, border=5, flag=wx.GROW|wx.LEFT)
    
    def _init_coll_LeftGridSizer_Items(self, parent):
        parent.AddWindow(self.staticText1, 0, border=0, flag=wx.GROW)
        parent.AddWindow(self.radioButton1, 0, border=0, flag=wx.GROW)
        parent.AddWindow(self.radioButton2, 0, border=0, flag=wx.GROW)
        parent.AddWindow(self.staticText2, 0, border=0, flag=wx.GROW)
        parent.AddWindow(self.ConnectionName, 0, border=0, flag=wx.GROW)
        parent.AddWindow(self.Spacer, 0, border=0, flag=wx.GROW)
    
    def _init_coll_LeftGridSizer_Growables(self, parent):
        parent.AddGrowableCol(0)
        parent.AddGrowableRow(5)
            
    def _init_coll_RightGridSizer_Items(self, parent):
        parent.AddWindow(self.staticText3, 0, border=0, flag=wx.GROW)
        parent.AddWindow(self.Preview, 0, border=0, flag=wx.GROW)
        
    def _init_coll_RightGridSizer_Growables(self, parent):
        parent.AddGrowableCol(0)
        parent.AddGrowableRow(1)

    def _init_sizers(self):
        self.flexGridSizer1 = wx.FlexGridSizer(cols=1, hgap=0, rows=2, vgap=10)
        self.MainSizer = wx.BoxSizer(wx.HORIZONTAL)
        self.LeftGridSizer = wx.FlexGridSizer(cols=1, hgap=0, rows=6, vgap=5)
        self.RightGridSizer = wx.FlexGridSizer(cols=1, hgap=0, rows=2, vgap=5)

        self._init_coll_flexGridSizer1_Items(self.flexGridSizer1)
        self._init_coll_flexGridSizer1_Growables(self.flexGridSizer1)
        self._init_coll_MainSizer_Items(self.MainSizer)
        self._init_coll_LeftGridSizer_Items(self.LeftGridSizer)
        self._init_coll_LeftGridSizer_Growables(self.LeftGridSizer)
        self._init_coll_RightGridSizer_Items(self.RightGridSizer)
        self._init_coll_RightGridSizer_Growables(self.RightGridSizer)

        self.SetSizer(self.flexGridSizer1)

    def _init_ctrls(self, prnt, ctrler):
        wx.Dialog.__init__(self, id=ID_CONNECTIONDIALOG,
              name='ConnectionDialog', parent=prnt,
              size=wx.Size(350, 220), style=wx.DEFAULT_DIALOG_STYLE,
              title=_('Connection Properties'))
        self.SetClientSize(wx.Size(350, 220))

        self.staticText1 = wx.StaticText(id=ID_CONNECTIONDIALOGSTATICTEXT1,
              label=_('Type:'), name='staticText1', parent=self,
              pos=wx.Point(0, 0), size=wx.Size(0, 17), style=0)

        self.staticText2 = wx.StaticText(id=ID_CONNECTIONDIALOGSTATICTEXT2,
              label=_('Name:'), name='staticText2', parent=self,
              pos=wx.Point(0, 0), size=wx.Size(0, 17), style=0)

        self.staticText3 = wx.StaticText(id=ID_CONNECTIONDIALOGSTATICTEXT3,
              label=_('Preview:'), name='staticText3', parent=self,
              pos=wx.Point(0, 0), size=wx.Size(0, 17), style=0)

        self.radioButton1 = wx.RadioButton(id=ID_CONNECTIONDIALOGRADIOBUTTON1,
              label=_('Connector'), name='radioButton1', parent=self,
              pos=wx.Point(0, 0), size=wx.Size(0, 24), style=wx.RB_GROUP)
        self.Bind(wx.EVT_RADIOBUTTON, self.OnTypeChanged, id=ID_CONNECTIONDIALOGRADIOBUTTON1)
        self.radioButton1.SetValue(True)

        self.radioButton2 = wx.RadioButton(id=ID_CONNECTIONDIALOGRADIOBUTTON2,
              label=_('Continuation'), name='radioButton2', parent=self, 
              pos=wx.Point(0, 0), size=wx.Size(0, 24), style=0)
        self.Bind(wx.EVT_RADIOBUTTON, self.OnTypeChanged, id=ID_CONNECTIONDIALOGRADIOBUTTON2)
        self.radioButton2.SetValue(False)
        
        self.ConnectionName = wx.TextCtrl(id=ID_CONNECTIONDIALOGNAME,
              name='Name', parent=self, pos=wx.Point(0, 0),
              size=wx.Size(0, 24), style=0)
        self.Bind(wx.EVT_TEXT, self.OnNameChanged, id=ID_CONNECTIONDIALOGNAME)

        self.Preview = wx.Panel(id=ID_CONNECTIONDIALOGPREVIEW,
              name='Preview', parent=self, pos=wx.Point(0, 0),
              size=wx.Size(0, 0), style=wx.TAB_TRAVERSAL|wx.SIMPLE_BORDER)
        self.Preview.SetBackgroundColour(wx.Colour(255,255,255))
        setattr(self.Preview, "GetDrawingMode", lambda:FREEDRAWING_MODE)
        setattr(self.Preview, "GetScaling", lambda:None)
        setattr(self.Preview, "IsOfType", ctrler.IsOfType)

        self.Spacer = wx.Panel(id=ID_CONNECTIONDIALOGSPACER,
              name='Spacer', parent=self, pos=wx.Point(0, 0),
              size=wx.Size(0, 0), style=wx.TAB_TRAVERSAL)

        self.ButtonSizer = self.CreateButtonSizer(wx.OK|wx.CANCEL|wx.CENTRE)
        if wx.VERSION >= (2, 5, 0):
            self.Bind(wx.EVT_BUTTON, self.OnOK, id=self.ButtonSizer.GetAffirmativeButton().GetId())
            self.Preview.Bind(wx.EVT_PAINT, self.OnPaint)
        else:
            self.Bind(wx.EVT_BUTTON, self.OnOK, id=self.ButtonSizer.GetChildren()[0].GetSizer().GetChildren()[0].GetWindow().GetId())
            wx.EVT_PAINT(self.Preview, self.OnPaint)
        
        self._init_sizers()

    def __init__(self, parent, controler):
        self._init_ctrls(parent, controler)
        self.Connection = None
        self.MinConnectionSize = None
        
        self.PouNames = []
        self.PouElementNames = []
    
    def SetPreviewFont(self, font):
        self.Preview.SetFont(font)
    
    def SetMinConnectionSize(self, size):
        self.MinConnectionSize = size
    
    def SetValues(self, values):
        for name, value in values.items():
            if name == "type":
                if value == CONNECTOR:
                    self.radioButton1.SetValue(True)
                elif value == CONTINUATION:
                    self.radioButton2.SetValue(True)
            elif name == "name":
                self.ConnectionName.SetValue(value)
        self.RefreshPreview()
    
    def GetValues(self):
        values = {}
        if self.radioButton1.GetValue():
            values["type"] = CONNECTOR
        else:
            values["type"] = CONTINUATION
        values["name"] = self.ConnectionName.GetValue()
        values["width"], values["height"] = self.Connection.GetSize()
        return values

    def SetPouNames(self, pou_names):
        self.PouNames = [pou_name.upper() for pou_name in pou_names]
        
    def SetPouElementNames(self, element_names):
        self.PouElementNames = [element_name.upper() for element_name in element_names]

    def OnOK(self, event):
        connection_name = self.ConnectionName.GetValue()
        if connection_name == "":
            message = wx.MessageDialog(self, _("Form isn't complete. Name must be filled!"), _("Error"), wx.OK|wx.ICON_ERROR)
            message.ShowModal()
            message.Destroy()
        elif not TestIdentifier(connection_name):
            message = wx.MessageDialog(self, _("\"%s\" is not a valid identifier!")%connection_name, _("Error"), wx.OK|wx.ICON_ERROR)
            message.ShowModal()
            message.Destroy()
        elif connection_name.upper() in IEC_KEYWORDS:
            message = wx.MessageDialog(self, _("\"%s\" is a keyword. It can't be used!")%connection_name, _("Error"), wx.OK|wx.ICON_ERROR)
            message.ShowModal()
            message.Destroy()
        elif connection_name.upper() in self.PouNames:
            message = wx.MessageDialog(self, _("\"%s\" pou already exists!")%connection_name, _("Error"), wx.OK|wx.ICON_ERROR)
            message.ShowModal()
            message.Destroy()
        elif connection_name.upper() in self.PouElementNames:
            message = wx.MessageDialog(self, _("\"%s\" element for this pou already exists!")%connection_name, _("Error"), wx.OK|wx.ICON_ERROR)
            message.ShowModal()
            message.Destroy()
        else:
            self.EndModal(wx.ID_OK)

    def OnTypeChanged(self, event):
        self.RefreshPreview()
        event.Skip()

    def OnNameChanged(self, event):
        self.RefreshPreview()
        event.Skip()
        
    def RefreshPreview(self):
        dc = wx.ClientDC(self.Preview)
        dc.SetFont(self.Preview.GetFont())
        dc.Clear()
        if self.radioButton1.GetValue():
            self.Connection = FBD_Connector(self.Preview, CONNECTOR, self.ConnectionName.GetValue())
        else:
            self.Connection = FBD_Connector(self.Preview, CONTINUATION, self.ConnectionName.GetValue())
        width, height = self.MinConnectionSize
        min_width, min_height = self.Connection.GetMinSize()
        width, height = max(min_width, width), max(min_height, height)
        self.Connection.SetSize(width, height)
        clientsize = self.Preview.GetClientSize()
        x = (clientsize.width - width) / 2
        y = (clientsize.height - height) / 2
        self.Connection.SetPosition(x, y)
        self.Connection.Draw(dc)

    def OnPaint(self, event):
        self.RefreshPreview()
        event.Skip()