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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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# Copyright (C) 2017: Andrey Skvortsov <andrej.skvortzov@gmail.com>

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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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class BrowseValuesLibraryDialog(wx.Dialog):

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    """

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    Modal dialog that helps in selecting predefined XML attributes sets out of hierarchically organized list

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    """    

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    def __init__(self, parent, name, library, default=None):

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        wx.Dialog.__init__(self,

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              name='BrowseValueDialog', parent=parent,

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              style=wx.DEFAULT_DIALOG_STYLE|wx.RESIZE_BORDER,

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              title=_('Browse %s values library') % name)

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        self.staticText1 = wx.StaticText(

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              label=_('Choose a value for %s:') % name, name='staticText1', parent=self,

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              pos=wx.Point(0, 0), size=wx.DefaultSize, style=0)

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        self.ValuesLibrary = wx.TreeCtrl(

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              name='ValuesLibrary', parent=self, pos=wx.Point(0, 0),

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              size=wx.Size(400, 200), style=wx.TR_HAS_BUTTONS|wx.TR_SINGLE|wx.SUNKEN_BORDER|wx.TR_HIDE_ROOT|wx.TR_LINES_AT_ROOT)

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        self.ButtonSizer = self.CreateButtonSizer(wx.OK|wx.CANCEL|wx.CENTRE)

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        self.Bind(wx.EVT_BUTTON, self.OnOK, id=self.ButtonSizer.GetAffirmativeButton().GetId())

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        self.flexGridSizer1 = wx.FlexGridSizer(cols=1, hgap=0, rows=3, vgap=10)

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        self.flexGridSizer1.AddWindow(self.staticText1, 0, border=20, flag=wx.GROW|wx.TOP|wx.LEFT|wx.RIGHT)

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        self.flexGridSizer1.AddWindow(self.ValuesLibrary, 0, border=20, flag=wx.GROW|wx.LEFT|wx.RIGHT)

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        self.flexGridSizer1.AddSizer(self.ButtonSizer, 0, border=20, flag=wx.ALIGN_RIGHT|wx.BOTTOM|wx.LEFT|wx.RIGHT)

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        self.flexGridSizer1.AddGrowableCol(0)

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        self.flexGridSizer1.AddGrowableRow(1)

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        self.SetSizer(self.flexGridSizer1)

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        self.Fit()

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        root = self.ValuesLibrary.AddRoot("")

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        self.GenerateValuesLibraryBranch(root, library, default)

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    def GenerateValuesLibraryBranch(self, root, children, default):

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        for infos in children:

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            item = self.ValuesLibrary.AppendItem(root, infos["name"])

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            self.ValuesLibrary.SetPyData(item, infos["infos"])

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            if infos["infos"] is not None and infos["infos"] == default:

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                self.ValuesLibrary.SelectItem(item)

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                self.ValuesLibrary.EnsureVisible(item)

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            self.GenerateValuesLibraryBranch(item, infos["children"], default)

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    def GetValueInfos(self):

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        selected = self.ValuesLibrary.GetSelection()

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        return self.ValuesLibrary.GetPyData(selected)

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    def OnOK(self, event):

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        selected = self.ValuesLibrary.GetSelection()

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        if not selected.IsOk() or self.ValuesLibrary.GetPyData(selected) is None:

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            message = wx.MessageDialog(self, _("No valid value selected!"), _("Error"), wx.OK|wx.ICON_ERROR)

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            message.ShowModal()

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            message.Destroy()

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        else:

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            self.EndModal(wx.ID_OK)

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