/***************************************************************************
 *   Copyright (c) 2008 Werner Mayer <wmayer[at]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                                *
 *                                                                         *
 ***************************************************************************/


#include "PreCompiled.h"
#ifndef _PreComp_
# include <Python.h>
#endif

#include <Base/PyObjectBase.h>
#include <Base/Console.h>

#include <Gui/Application.h>
#include <Gui/Document.h>
#include <Gui/Tree.h>
#include <Gui/ViewProviderDocumentObject.h>

#include <Mod/Assembly/App/ItemPy.h>

// pointer to the active assembly object
Assembly::Item*                  ActiveAsmObject =0;
Gui::Document*                   ActiveGuiDoc    =0;
App::Document*                   ActiveAppDoc    =0;
Gui::ViewProviderDocumentObject* ActiveVp        =0;



/* module functions */
static PyObject* setActiveAssembly(PyObject* self, PyObject* args)
{
    if(ActiveAsmObject) {
        // check if the document not already closed
        std::vector<App::Document*> docs = App::GetApplication().getDocuments();
        for(std::vector<App::Document*>::const_iterator it=docs.begin(); it!=docs.end(); ++it)
            if(*it == ActiveAppDoc) {
                ActiveGuiDoc->signalHighlightObject(*ActiveVp,Gui::Blue,false);
                break;
            }

        ActiveAsmObject = 0;
        ActiveGuiDoc    =0;
        ActiveAppDoc    =0;
        ActiveVp        =0;
    }

    PyObject* object=0;
    if(PyArg_ParseTuple(args,"|O!",&(Assembly::ItemPy::Type), &object)&& object) {
        Assembly::Item* Item = static_cast<Assembly::ItemPy*>(object)->getItemPtr();
        // Should be set!
        assert(Item);

        // get the gui document of the Assembly Item
        ActiveAsmObject = Item;
        ActiveAppDoc = Item->getDocument();
        ActiveGuiDoc = Gui::Application::Instance->getDocument(ActiveAppDoc);
        ActiveVp = dynamic_cast<Gui::ViewProviderDocumentObject*>(ActiveGuiDoc->getViewProvider(Item)) ;
        ActiveGuiDoc->signalHighlightObject(*ActiveVp,Gui::Blue,true);
    }

    Py_Return;
}

static PyObject* clearActiveAssembly(PyObject* self,  PyObject* args) {

    ActiveAsmObject = 0;
    ActiveGuiDoc    =0;
    ActiveAppDoc    =0;
    ActiveVp        =0;
    
    Py_Return;
}

/* module functions */
static PyObject* getActiveAssembly(PyObject* self, PyObject* args)
{
    if(ActiveAsmObject) {

        return ActiveAsmObject->getPyObject();
    }


    Py_Return;
}


/* registration table  */
struct PyMethodDef AssemblyGui_Import_methods[] = {
    {   "setActiveAssembly"       ,setActiveAssembly      ,METH_VARARGS,
        "setActiveAssembly(AssemblyObject) -- Set the Assembly object in work."
    },
    {   "getActiveAssembly"       ,getActiveAssembly      ,METH_VARARGS,
        "getActiveAssembly() -- Returns the Assembly object in work."
    },
    {   "clearActiveAssembly"       ,clearActiveAssembly      ,METH_VARARGS,
        "clearActiveAssembly() -- Removes the current active Assembly as object in work"
    },

    {NULL, NULL}                   /* end of table marker */
};