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#!/usr/bin/env python

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# -*- coding: utf-8 -*-

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#This file is part of PLCOpenEditor, a library implementing an IEC 61131-3 editor

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#based on the plcopen standard. 

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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 library is free software; you can redistribute it and/or

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#modify it under the terms of the GNU General Public

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#License as published by the Free Software Foundation; either

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#version 2.1 of the License, or (at your option) any later version.

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#

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#This library 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 GNU

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#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

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#License along with this library; if not, write to the Free Software

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#Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

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import re

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import wx

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RE_ESCAPED_CHARACTERS = ".*+()[]?:|{}^$<>=-,"

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def EscapeText(text):

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    text = text.replace('\\', '\\\\')

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    for c in RE_ESCAPED_CHARACTERS:

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        text = text.replace(c, '\\' + c)

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    return text

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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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              size=wx.Size(600, 350))

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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)

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

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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'), 

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              size=wx.Size(0, 24), 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, 

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              label=_('Only Elements'), size=wx.Size(0, 24))

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

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        ok_button = self.ButtonSizer.GetAffirmativeButton()

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        ok_button.SetLabel(_('Search'))

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        self.Bind(wx.EVT_BUTTON, self.OnOK, ok_button)

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        main_sizer.AddSizer(self.ButtonSizer, border=20, 

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

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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.Pattern.SetFocus()

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    def GetCriteria(self):

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        raw_pattern = pattern = self.Pattern.GetValue()

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        if not self.CaseSensitive.GetValue():

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            pattern = pattern.upper()

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        if not self.RegularExpression.GetValue():

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            pattern = EscapeText(pattern)

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        criteria = {

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            "raw_pattern": raw_pattern, 

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            "pattern": re.compile(pattern),

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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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            criteria["filter"] = "all"

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        elif self.OnlyElements.GetValue():

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            criteria["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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                    criteria["filter"].append(name)

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        return criteria

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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 OnOK(self, event):

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        message = None

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        if self.Pattern.GetValue() == "":

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            message = _("Form isn't complete. Pattern to search must be filled!")

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        else:

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            wrong_pattern = False

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            if self.RegularExpression.GetValue():

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                try:

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                    re.compile(self.Pattern.GetValue())

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                except:

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                    wrong_pattern = True

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            if wrong_pattern:

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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)