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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 re

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from plcopen.plcopen import *

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import wx

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

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#                          Search In Project Dialog

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

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def GetElementsChoices():

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    _ = lambda x: x

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    return [("datatype", _("Data Type")), 

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            ("function", _("Function")), 

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            ("functionBlock", _("Function Block")), 

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            ("program", _("Program")), 

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            ("configuration", _("Configuration"))]

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class SearchInProjectDialog(wx.Dialog):

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    def __init__(self, parent):

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        wx.Dialog.__init__(self, parent, title=_('Search in Project'))

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

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        main_sizer.AddGrowableCol(0)

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        main_sizer.AddGrowableRow(1)

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        pattern_sizer = wx.FlexGridSizer(cols=2, hgap=5, rows=2, vgap=5)

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        pattern_sizer.AddGrowableCol(0)

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        main_sizer.AddSizer(pattern_sizer, border=20, 

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              flag=wx.GROW|wx.TOP|wx.LEFT|wx.RIGHT)

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        pattern_label = wx.StaticText(self, label=_('Pattern to search:'))

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        pattern_sizer.AddWindow(pattern_label, flag=wx.ALIGN_BOTTOM)

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        self.CaseSensitive = wx.CheckBox(self, label=_('Case sensitive'))

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        pattern_sizer.AddWindow(self.CaseSensitive, flag=wx.GROW)

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        self.Pattern = wx.TextCtrl(self, size=wx.Size(250,-1))

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        self.Bind(wx.EVT_TEXT, self.FindPatternChanged, self.Pattern)

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        pattern_sizer.AddWindow(self.Pattern, flag=wx.GROW)

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        self.Bind(wx.EVT_CHAR_HOOK, self.OnEscapeKey)

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        self.RegularExpression = wx.CheckBox(self, label=_('Regular expression'))

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        pattern_sizer.AddWindow(self.RegularExpression, flag=wx.GROW)

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        scope_staticbox = wx.StaticBox(self, label=_('Scope'))

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        scope_sizer = wx.StaticBoxSizer(scope_staticbox, wx.HORIZONTAL)

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        main_sizer.AddSizer(scope_sizer, border=20, 

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              flag=wx.GROW|wx.LEFT|wx.RIGHT)

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        scope_selection_sizer = wx.BoxSizer(wx.VERTICAL)

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        scope_sizer.AddSizer(scope_selection_sizer, 1, border=5, 

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              flag=wx.GROW|wx.TOP|wx.LEFT|wx.BOTTOM)

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        self.WholeProject = wx.RadioButton(self, label=_('Whole Project'), style=wx.RB_GROUP)

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        self.WholeProject.SetValue(True)

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        self.Bind(wx.EVT_RADIOBUTTON, self.OnScopeChanged, self.WholeProject)

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        scope_selection_sizer.AddWindow(self.WholeProject, border=5, 

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              flag=wx.GROW|wx.BOTTOM)

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        self.OnlyElements = wx.RadioButton(self, label=_('Only Elements'))

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        self.Bind(wx.EVT_RADIOBUTTON, self.OnScopeChanged, self.OnlyElements)

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        self.OnlyElements.SetValue(False)

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        scope_selection_sizer.AddWindow(self.OnlyElements, flag=wx.GROW)

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        self.ElementsList = wx.CheckListBox(self)

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        self.ElementsList.Enable(False)

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        scope_sizer.AddWindow(self.ElementsList, 1, border=5, 

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              flag=wx.GROW|wx.TOP|wx.RIGHT|wx.BOTTOM)

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        buttons_sizer = wx.BoxSizer(wx.HORIZONTAL)

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        main_sizer.AddSizer(buttons_sizer, border=20,

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                            flag=wx.LEFT | wx.RIGHT | wx.BOTTOM | wx.ALIGN_RIGHT)

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        self.FindButton = wx.Button(self, label=_("Find"))

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        self.FindButton.SetDefault()

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        self.Bind(wx.EVT_BUTTON, self.OnFindButton, self.FindButton)

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        buttons_sizer.AddWindow(self.FindButton, border=5, flag=wx.RIGHT)

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        self.CloseButton = wx.Button(self, label=_("Close"))

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        self.Bind(wx.EVT_BUTTON, self.OnCloseButton, self.CloseButton)

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        buttons_sizer.AddWindow(self.CloseButton)

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        self.SetSizer(main_sizer)

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        for name, label in GetElementsChoices():

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            self.ElementsList.Append(_(label))

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        self.Fit()

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        self.infosPrev = {}

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        self.criteria = {}

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        self.Pattern.SetFocus()

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        self.RefreshButtonsState()

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    def RefreshButtonsState(self):

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        find_pattern = self.Pattern.GetValue()

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        self.FindButton.Enable(find_pattern != "")

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    def GetCriteria(self):

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        return self.criteria

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    def FindPatternChanged(self, event):

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        self.RefreshButtonsState()

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        event.Skip()

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    def OnScopeChanged(self, event):

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        self.ElementsList.Enable(self.OnlyElements.GetValue())

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        event.Skip()

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    def OnCloseButton(self, event):

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        self.EndModal(wx.ID_CANCEL)

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    def OnEscapeKey(self, event):

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        keycode = event.GetKeyCode()

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        if keycode == wx.WXK_ESCAPE:

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            self.OnCloseButton(event)

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        else:

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            event.Skip()

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    def OnFindButton(self, event):

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        message = None

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        infos = {

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            "find_pattern": self.Pattern.GetValue(),

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            "case_sensitive": self.CaseSensitive.GetValue(),

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            "regular_expression": self.RegularExpression.GetValue(),

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        }

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        if self.WholeProject.GetValue():

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            infos["filter"] = "all"

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        elif self.OnlyElements.GetValue():

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            infos["filter"] = []

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            for index, (name, label) in enumerate(GetElementsChoices()):

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                if self.ElementsList.IsChecked(index):

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                    infos["filter"].append(name)

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        if self.infosPrev != infos:

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            try:

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                self.criteria = infos

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                CompilePattern(self.criteria)

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                self.infosPrev = infos

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            except:

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                self.criteria.clear()

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                message = _("Syntax error in regular expression of pattern to search!")

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        if message is not None:

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            dialog = wx.MessageDialog(self, message, _("Error"), wx.OK|wx.ICON_ERROR)

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            dialog.ShowModal()

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            dialog.Destroy()

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        else:

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            self.EndModal(wx.ID_OK)