# -*- 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
#
# 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.

import re
from types import TupleType

import wx

from controls import CustomEditableListBox

#-------------------------------------------------------------------------------
#                                  Helpers
#-------------------------------------------------------------------------------

DIMENSION_MODEL = re.compile("([0-9]+)\.\.([0-9]+)$")

#-------------------------------------------------------------------------------
#                             Array Type Dialog
#-------------------------------------------------------------------------------

class ArrayTypeDialog(wx.Dialog):
    
    def __init__(self, parent, datatypes, infos):
        wx.Dialog.__init__(self, parent,
              size=wx.Size(500, 350), title=_('Edit array type properties'))
        
        main_sizer = wx.FlexGridSizer(cols=1, hgap=0, rows=3, vgap=10)
        main_sizer.AddGrowableCol(0)
        main_sizer.AddGrowableRow(1)
        
        top_sizer = wx.BoxSizer(wx.HORIZONTAL)
        main_sizer.AddSizer(top_sizer, border=20, 
              flag=wx.GROW|wx.TOP|wx.LEFT|wx.RIGHT)
        
        basetype_label = wx.StaticText(self, label=_('Base Type:'))
        top_sizer.AddWindow(basetype_label, 1, flag=wx.ALIGN_BOTTOM)
        
        self.BaseType = wx.ComboBox(self, style=wx.CB_READONLY)
        top_sizer.AddWindow(self.BaseType, 1, flag=wx.GROW)
        
        self.Dimensions = CustomEditableListBox(self, label=_("Dimensions:"), 
              style=wx.gizmos.EL_ALLOW_NEW|
                    wx.gizmos.EL_ALLOW_EDIT|
                    wx.gizmos.EL_ALLOW_DELETE)
        for func in ["_OnLabelEndEdit", 
                     "_OnAddButton", 
                     "_OnDelButton", 
                     "_OnUpButton", 
                     "_OnDownButton"]:
            setattr(self.Dimensions, func, self.OnDimensionsChanged)
        main_sizer.AddSizer(self.Dimensions, border=20, 
              flag=wx.GROW|wx.LEFT|wx.RIGHT)
        
        button_sizer = self.CreateButtonSizer(wx.OK|wx.CANCEL|wx.CENTRE)
        self.Bind(wx.EVT_BUTTON, self.OnOK, button_sizer.GetAffirmativeButton())
        main_sizer.AddSizer(button_sizer, border=20, 
              flag=wx.ALIGN_RIGHT|wx.BOTTOM|wx.LEFT|wx.RIGHT)
        
        self.SetSizer(main_sizer)
        
        for datatype in datatypes:
            self.BaseType.Append(datatype)
        
        if isinstance(infos, TupleType) and infos[0] == "array":
            self.BaseType.SetStringSelection(infos[1])
            self.Dimensions.SetStrings(map(lambda x : "..".join(x), infos[2]))
        elif infos in datatypes:
            self.BaseType.SetStringSelection(infos)
        
        self.BaseType.SetFocus()
        
    def GetDimensions(self):
        dimensions_list = []
        for dimensions in self.Dimensions.GetStrings():
            result = DIMENSION_MODEL.match(dimensions)
            if result is None:
                message = wx.MessageDialog(self, _("\"%s\" value isn't a valid array dimension!")%dimensions, _("Error"), wx.OK|wx.ICON_ERROR)
                message.ShowModal()
                message.Destroy()
                return None
            bounds = result.groups()
            if int(bounds[0]) >= int(bounds[1]):
                message = wx.MessageDialog(self, _("\"%s\" value isn't a valid array dimension!\nRight value must be greater than left value.")%dimensions, _("Error"), wx.OK|wx.ICON_ERROR)
                message.ShowModal()
                message.Destroy()
                return None
            dimensions_list.append(bounds)
        return dimensions_list
    
    def OnDimensionsChanged(self, event):
        wx.CallAfter(self.GetDimensions)
        event.Skip()
    
    def OnOK(self, event):
        if self.GetDimensions() is not None:
            self.EndModal(wx.ID_OK)
            
    def GetValue(self):
        return "array", self.BaseType.GetStringSelection(), self.GetDimensions()