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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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from graphics.FBD_Objects import FBD_Block

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from controls.LibraryPanel import LibraryPanel

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from BlockPreviewDialog import BlockPreviewDialog

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

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#                          Create New Block Dialog

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

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class FBDBlockDialog(BlockPreviewDialog):

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    def __init__(self, parent, controller, tagname):

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        BlockPreviewDialog.__init__(self, parent, controller, tagname,

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              size=wx.Size(600, 450), title=_('Block Properties'))

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        main_sizer = wx.FlexGridSizer(cols=1, hgap=0, rows=4, vgap=10)

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        main_sizer.AddGrowableCol(0)

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        main_sizer.AddGrowableRow(0)

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        column_sizer = wx.BoxSizer(wx.HORIZONTAL)

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        main_sizer.AddSizer(column_sizer, border=20, 

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

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        type_staticbox = wx.StaticBox(self, label=_('Type:'))

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        left_staticboxsizer = wx.StaticBoxSizer(type_staticbox, wx.VERTICAL)

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        column_sizer.AddSizer(left_staticboxsizer, 1, border=5, 

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              flag=wx.GROW|wx.RIGHT)

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        self.LibraryPanel = LibraryPanel(self)

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        setattr(self.LibraryPanel, "_OnTreeItemSelected", 

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              self.OnLibraryTreeItemSelected)

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        left_staticboxsizer.AddWindow(self.LibraryPanel, 1, border=5, 

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              flag=wx.GROW|wx.TOP)

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        right_gridsizer = wx.FlexGridSizer(cols=1, hgap=0, rows=3, vgap=5)

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        right_gridsizer.AddGrowableCol(0)

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        right_gridsizer.AddGrowableRow(2)

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        column_sizer.AddSizer(right_gridsizer, 1, border=5, 

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              flag=wx.GROW|wx.LEFT)

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        top_right_gridsizer = wx.FlexGridSizer(cols=2, hgap=0, rows=4, vgap=5)

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        top_right_gridsizer.AddGrowableCol(1)

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        right_gridsizer.AddSizer(top_right_gridsizer, flag=wx.GROW)

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        name_label = wx.StaticText(self, label=_('Name:'))

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        top_right_gridsizer.AddWindow(name_label, 

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              flag=wx.ALIGN_CENTER_VERTICAL)

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        self.BlockName = wx.TextCtrl(self)

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        self.Bind(wx.EVT_TEXT, self.OnNameChanged, self.BlockName)

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        top_right_gridsizer.AddWindow(self.BlockName, flag=wx.GROW)

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        inputs_label = wx.StaticText(self, label=_('Inputs:'))

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        top_right_gridsizer.AddWindow(inputs_label, 

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              flag=wx.ALIGN_CENTER_VERTICAL)

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        self.Inputs = wx.SpinCtrl(self, min=2, max=20,

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              style=wx.SP_ARROW_KEYS)

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        self.Bind(wx.EVT_SPINCTRL, self.OnInputsChanged, self.Inputs)

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        top_right_gridsizer.AddWindow(self.Inputs, flag=wx.GROW)

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        execution_order_label = wx.StaticText(self, label=_('Execution Order:'))

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        top_right_gridsizer.AddWindow(execution_order_label, 

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              flag=wx.ALIGN_CENTER_VERTICAL)

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        self.ExecutionOrder = wx.SpinCtrl(self, min=0, style=wx.SP_ARROW_KEYS)

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        self.Bind(wx.EVT_SPINCTRL, self.OnExecutionOrderChanged, self.ExecutionOrder)

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        top_right_gridsizer.AddWindow(self.ExecutionOrder, flag=wx.GROW)

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        execution_control_label = wx.StaticText(self, label=_('Execution Control:'))

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        top_right_gridsizer.AddWindow(execution_control_label, 

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              flag=wx.ALIGN_CENTER_VERTICAL)

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        self.ExecutionControl = wx.CheckBox(self)

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        self.Bind(wx.EVT_CHECKBOX, self.OnExecutionOrderChanged, self.ExecutionControl)

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        top_right_gridsizer.AddWindow(self.ExecutionControl, flag=wx.GROW)

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        right_gridsizer.AddWindow(self.PreviewLabel, flag=wx.GROW)

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        right_gridsizer.AddWindow(self.Preview, flag=wx.GROW)

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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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        self.BlockName.SetValue("")

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        self.BlockName.Enable(False)

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        self.Inputs.Enable(False)

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        self.CurrentBlockName = None

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        self.LibraryPanel.SetBlockList(controller.GetBlockTypes(tagname))

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        self.LibraryPanel.SetFocus()

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    def OnOK(self, event):

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        message = None

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        selected = self.LibraryPanel.GetSelectedBlock()

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        block_name = self.BlockName.GetValue()

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        name_enabled = self.BlockName.IsEnabled()

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        if selected is None:

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            message = _("Form isn't complete. Valid block type must be selected!")

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        elif name_enabled and block_name == "":

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

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        if message is not None:

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            self.ShowMessage(message)

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            BlockPreviewDialog.OnOK(self, event)

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    def SetValues(self, values):

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        blocktype = values.get("type", None)

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        default_name_model = re.compile("%s[0-9]+" % blocktype)

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        if blocktype is not None:

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            self.LibraryPanel.SelectTreeItem(blocktype, 

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                                             values.get("inputs", None))

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        for name, value in values.items():

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            if name == "name":

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                self.BlockName.ChangeValue(value)

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            elif name == "extension":

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                self.Inputs.SetValue(value)

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            elif name == "executionOrder":

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                self.ExecutionOrder.SetValue(value)

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            elif name == "executionControl":

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                   self.ExecutionControl.SetValue(value)

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        self.RefreshPreview()

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    def GetValues(self):

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        values = self.LibraryPanel.GetSelectedBlock()

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        if self.BlockName.IsEnabled() and self.BlockName.GetValue() != "":

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            values["name"] = self.BlockName.GetValue()

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        values["width"], values["height"] = self.Block.GetSize()

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        values["extension"] = self.Inputs.GetValue()

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        values["executionOrder"] = self.ExecutionOrder.GetValue()

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        values["executionControl"] = self.ExecutionControl.GetValue()

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        return values

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    def OnLibraryTreeItemSelected(self, event):

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        values = self.LibraryPanel.GetSelectedBlock()

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        blocktype = (self.Controller.GetBlockType(values["type"], 

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                                                  values["inputs"])

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                     if values is not None else None)

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        if blocktype is not None:

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            self.Inputs.SetValue(len(blocktype["inputs"]))

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            self.Inputs.Enable(blocktype["extensible"])

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        else:

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            self.Inputs.SetValue(2)

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            self.Inputs.Enable(False)

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        if blocktype is not None and blocktype["type"] != "function":

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            self.BlockName.Enable(True)

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            self.BlockName.ChangeValue(

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                self.CurrentBlockName

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                if self.CurrentBlockName is not None

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                else self.Controller.GenerateNewName(

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                    self.TagName, None, values["type"]+"%d", 0))

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        else:

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            self.BlockName.Enable(False)

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            self.BlockName.ChangeValue("")

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        self.RefreshPreview()

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    def OnNameChanged(self, event):

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        if self.BlockName.IsEnabled():

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            self.CurrentBlockName = self.BlockName.GetValue()

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            self.RefreshPreview()

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        event.Skip()

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    def OnInputsChanged(self, event):

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        if self.Inputs.IsEnabled():

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            self.RefreshPreview()

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        event.Skip()

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    def OnExecutionOrderChanged(self, event):

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        self.RefreshPreview()

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        event.Skip()

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    def OnExecutionControlChanged(self, event):

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        self.RefreshPreview()

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        event.Skip()

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    def RefreshPreview(self):

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        values = self.LibraryPanel.GetSelectedBlock()

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        if values is not None:

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            if self.BlockName.IsEnabled():

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                blockname = self.BlockName.GetValue()

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            else:

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                blockname = ""

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            self.Block = FBD_Block(self.Preview, values["type"], 

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                    blockname, 

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                    extension = self.Inputs.GetValue(), 

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                    inputs = values["inputs"], 

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                    executionControl = self.ExecutionControl.GetValue(), 

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                    executionOrder = self.ExecutionOrder.GetValue())

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        else:

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            self.Block = None 

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        BlockPreviewDialog.RefreshPreview(self)