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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 wx

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from dialogs.DurationEditorDialog import DurationEditorDialog

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class DurationCellControl(wx.PyControl):

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    '''

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    Custom cell editor control with a text box and a button that launches

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    the DurationEditorDialog.

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    '''

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    def __init__(self, parent):

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        wx.Control.__init__(self, parent)

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        main_sizer = wx.FlexGridSizer(cols=2, hgap=0, rows=1, vgap=0)

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        main_sizer.AddGrowableCol(0)

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        main_sizer.AddGrowableRow(0)

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        # create location text control

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        self.Duration = wx.TextCtrl(self, style=wx.TE_PROCESS_ENTER)

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        self.Duration.Bind(wx.EVT_KEY_DOWN, self.OnDurationChar)

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        main_sizer.AddWindow(self.Duration, flag=wx.GROW)

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        # create browse button

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        self.EditButton = wx.Button(self, label='...', size=wx.Size(30, 0))

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        self.Bind(wx.EVT_BUTTON, self.OnEditButtonClick, self.EditButton)

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        main_sizer.AddWindow(self.EditButton, flag=wx.GROW)

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        self.Bind(wx.EVT_SIZE, self.OnSize)

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        self.SetSizer(main_sizer)

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        self.Default = None

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    def SetValue(self, value):

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        self.Default = value

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        self.Duration.SetValue(value)

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    def GetValue(self):

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        return self.Duration.GetValue()

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    def OnSize(self, event):

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        self.Layout()

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    def OnEditButtonClick(self, event):

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        # pop up the Duration Editor dialog

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        dialog = DurationEditorDialog(self)

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        dialog.SetDuration(self.Duration.GetValue())

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        if dialog.ShowModal() == wx.ID_OK:

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            # set the duration

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            self.Duration.SetValue(dialog.GetDuration())

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        dialog.Destroy()

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        self.Duration.SetFocus()

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    def OnDurationChar(self, event):

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        keycode = event.GetKeyCode()

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        if keycode in [wx.WXK_RETURN, wx.WXK_TAB]:

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            self.Parent.Parent.ProcessEvent(event)

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        elif keycode == wx.WXK_ESCAPE:

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            self.Duration.SetValue(self.Default)

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            self.Parent.Parent.CloseEditControl()

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        else:

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            event.Skip()

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    def SetInsertionPoint(self, i):

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        self.Duration.SetInsertionPoint(i)

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    def SetFocus(self):

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        self.Duration.SetFocus()

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class DurationCellEditor(wx.grid.PyGridCellEditor):

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    '''

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    Grid cell editor that uses DurationCellControl to display an edit button.

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    '''

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    def __init__(self, table):

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        wx.grid.PyGridCellEditor.__init__(self)

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        self.Table = table

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    def __del__(self):

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        self.CellControl = None

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    def Create(self, parent, id, evt_handler):

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        self.CellControl = DurationCellControl(parent)

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        self.SetControl(self.CellControl)

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        if evt_handler:

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            self.CellControl.PushEventHandler(evt_handler)

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    def BeginEdit(self, row, col, grid):

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        self.CellControl.Enable()

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        self.CellControl.SetValue(self.Table.GetValueByName(row, 'Interval'))

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        self.CellControl.SetFocus()

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    def EndEdit(self, row, col, grid):

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        duration = self.CellControl.GetValue()

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        old_duration = self.Table.GetValueByName(row, 'Interval')

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        changed = duration != old_duration

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        if changed:

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            self.Table.SetValueByName(row, 'Interval', duration)

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        self.CellControl.Disable()

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        return changed

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    def SetSize(self, rect):

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        self.CellControl.SetDimensions(rect.x + 1, rect.y,

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                                        rect.width, rect.height,

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                                        wx.SIZE_ALLOW_MINUS_ONE)

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    def Clone(self):

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        return DurationCellEditor(self.Table)