#/******************************************************************************
# * Copyright (c)2012 Jan Rheinlaender <jrheinlaender@users.sourceforge.net> *
# * *
# * This file is part of the FreeCAD CAx development system. *
# * *
# * This library is free software; you can redistribute it and/or *
# * modify it under the terms of the GNU Library General Public *
# * License as published by the Free Software Foundation; either *
# * version 2 of the License, or (at your option) any later version. *
# * *
# * This library is distributed in the hope that it will be useful, *
# * but WITHOUT ANY WARRANTY; without even the implied warranty of *
# * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
# * GNU Library General Public License for more details. *
# * *
# * You should have received a copy of the GNU Library General Public *
# * License along with this library; see the file COPYING.LIB. If not, *
# * write to the Free Software Foundation, Inc., 59 Temple Place, *
# * Suite 330, Boston, MA 02111-1307, USA *
# * *
# ******************************************************************************/

import FreeCAD, FreeCADGui
from TaskHole import TaskHole

class ViewProviderHole:
    def __init__(self, obj):
        ''' Set this object to the proxy object of the actual view provider '''
        obj.Proxy = self
        self.Object = obj.Object

    def attach(self, obj):
        ''' Setup the scene sub-graph of the view provider, this method is mandatory '''
        return

    def claimChildren(self):
        if self is None:
            return
        # The following statement leads to the error:
        # <unknown exception traceback><type 'exceptions.TypeError'>: PyCXX: Error creating object of type N2Py7SeqBaseINS_6ObjectEEE from None
        if not hasattr(self,  "Object"):
            return
            
        if self.Object != None:
            return [self.Object.HoleGroove,  # the groove feature
                         self.Object.HoleGroove.Sketch.Support[0],  # the groove sketchplane (datum plane) feature
                         self.Object.HoleGroove.Sketch.Support[0].References[0][0]] # the sketchplane first reference (datum line)

    def updateData(self, fp, prop):
        ''' If a property of the handled feature has changed we have the chance to handle this here '''
        return

    def getDisplayModes(self,obj):
        ''' Return a list of display modes. '''
        modes=[]
        return modes

    def getDefaultDisplayMode(self):
        ''' Return the name of the default display mode. It must be defined in getDisplayModes. '''
        return "Shaded"

    def onChanged(self, vp, prop):
        ''' Print the name of the property that has changed '''
        #FreeCAD.Console.PrintMessage("Change property: " + str(prop) + "\n")
        pass

    def setEdit(self,vp,mode):
        FreeCAD.Console.PrintMessage("setEdit\n")
        panel = TaskHole(self.Object)        

        FreeCADGui.Control.showDialog(panel)
        if panel.setupUi():
            FreeCADGui.Control.closeDialog(panel)
            return True

        return False

    def unsetEdit(self,vp,mode):
        return

    def getIcon(self):
        ''' Return the icon in XMP format which will appear in the tree view. This method is optional
        and if not defined a default icon is shown.
        '''
        return ""

    def __getstate__(self):
        ''' When saving the document this object gets stored using Python's cPickle module.
        Since we have some un-pickable here -- the Coin stuff -- we must define this method
        to return a tuple of all pickable objects or None.
        '''
        return None

    def __setstate__(self,state):
        ''' When restoring the pickled object from document we have the chance to set some
        internals here. Since no data were pickled nothing needs to be done here.
        '''
        return None