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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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import wx.gizmos

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class CustomEditableListBox(wx.gizmos.EditableListBox):

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    def __init__(self, *args, **kwargs):

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        wx.gizmos.EditableListBox.__init__(self, *args, **kwargs)

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        listbox = self.GetListCtrl()

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        listbox.Bind(wx.EVT_KEY_DOWN, self.OnKeyDown)

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        listbox.Bind(wx.EVT_LIST_BEGIN_LABEL_EDIT, self.OnLabelBeginEdit)

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        listbox.Bind(wx.EVT_LIST_END_LABEL_EDIT, self.OnLabelEndEdit)

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        for button, tooltip, call_function in [(self.GetEditButton(), _("Edit item"), "_OnEditButton"),

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                                               (self.GetNewButton(), _("New item"), "_OnNewButton"),

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                                               (self.GetDelButton(), _("Delete item"), "_OnDelButton"),

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                                               (self.GetUpButton(), _("Move up"), "_OnUpButton"),

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                                               (self.GetDownButton(), _("Move down"), "_OnDownButton")]:

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            button.SetToolTipString(tooltip)

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            button.Bind(wx.EVT_BUTTON, self.GetButtonPressedFunction(call_function))

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        self.Editing = False

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    def EnsureCurrentItemVisible(self):

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        listctrl = self.GetListCtrl()

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        listctrl.EnsureVisible(listctrl.GetFocusedItem())

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    def OnLabelBeginEdit(self, event):

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        self.Editing = True

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        func = getattr(self, "_OnLabelBeginEdit", None)

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        if func is not None:

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            func(event)

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        else:

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            event.Skip()

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    def OnLabelEndEdit(self, event):

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        self.Editing = False

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        func = getattr(self, "_OnLabelEndEdit", None)

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        if func is not None:

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            func(event)

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        else:

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            event.Skip()

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    def GetButtonPressedFunction(self, call_function):

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        def OnButtonPressed(event):

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            if wx.Platform != '__WXMSW__' or not self.Editing:

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                func = getattr(self, call_function, None)

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                if func is not None:

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                    func(event)

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                    wx.CallAfter(self.EnsureCurrentItemVisible)

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                else:

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                    wx.CallAfter(self.EnsureCurrentItemVisible)

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                    event.Skip()

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        return OnButtonPressed

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    def OnKeyDown(self, event):

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        button = None

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        keycode = event.GetKeyCode()

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        if keycode in (wx.WXK_ADD, wx.WXK_NUMPAD_ADD):

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            button = self.GetNewButton()

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        elif keycode in (wx.WXK_DELETE, wx.WXK_NUMPAD_DELETE):

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            button = self.GetDelButton()

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        elif keycode == wx.WXK_UP and event.ShiftDown():

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            button = self.GetUpButton()

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        elif keycode == wx.WXK_DOWN and event.ShiftDown():

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            button = self.GetDownButton()

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        elif keycode == wx.WXK_SPACE:

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            button = self.GetEditButton()

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        if button is not None and button.IsEnabled():

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            button.ProcessEvent(wx.CommandEvent(wx.EVT_BUTTON.typeId, button.GetId()))

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        else:

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            event.Skip()