/* Chrysalide - Outil d'analyse de fichiers binaires
 * helpers-ui.c - simplification des interactions UI de base avec Python
 *
 * Copyright (C) 2025 Cyrille Bagard
 *
 *  This file is part of Chrysalide.
 *
 *  Chrysalide is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  Chrysalide 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 General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with Chrysalide.  If not, see <http://www.gnu.org/licenses/>.
 */


#include "helpers-ui.h"


#include <assert.h>
#include <pygobject.h>
#include <gtk/gtk.h>


#include "bindings.h"



/* ---------------------------------------------------------------------------------- */
/*                             CONFORTS CIBLANT PYGOBJECT                             */
/* ---------------------------------------------------------------------------------- */


/******************************************************************************
*                                                                             *
*  Paramètres  : -                                                            *
*                                                                             *
*  Description : Assure une prise en charge de l'objet Gtk.WIdget.            *
*                                                                             *
*  Retour      : Bilan de l'opération.                                        *
*                                                                             *
*  Remarques   : -                                                            *
*                                                                             *
******************************************************************************/

bool ensure_gtk_widget_is_registered(void)
{
    bool result;                            /* Bilan à retourner           */
    PyObject *gtk_mod;                      /* Module Python Gtk           */
    PyObject *widget_type;                  /* Module "GtkWidget"          */

    /**
     * Afin d'éviter le message d'avertissement suivant, la version attendue
     * est demandée :
     *
     *    PyGIWarning: Gtk was imported without specifying a version first.
     *    Use gi.require_version('Gtk', '4.0') before import to ensure that the right version gets loaded.
     *
     */
    result = import_namespace_from_gi_repository("Gtk", "4.0");

    if (result)
    {
        gtk_mod = PyImport_ImportModule("gi.repository.Gtk");
        assert(gtk_mod != NULL);

        widget_type = PyObject_GetAttrString(gtk_mod, "Widget");

        result = (widget_type != NULL);

        Py_DECREF(gtk_mod);
        Py_XDECREF(widget_type);

    }

    return result;

}



/******************************************************************************
*                                                                             *
*  Paramètres  : arg = argument quelconque à tenter de convertir.             *
*                dst = destination des valeurs récupérées en cas de succès.   *
*                                                                             *
*  Description : Tente de convertir en instance de composant GTK.             *
*                                                                             *
*  Retour      : Bilan de l'opération, voire indications supplémentaires.     *
*                                                                             *
*  Remarques   : -                                                            *
*                                                                             *
******************************************************************************/

int convert_to_gtk_widget(PyObject *arg, void *dst)
{
    int result;                             /* Bilan à retourner           */
    PyObject *gtk_mod;                      /* Module Python Gtk           */
    PyObject *widget_type;                  /* Module "GtkWidget"          */
    int ret;                                /* Bilan d'une conversion      */

    result = 0;

    gtk_mod = PyImport_ImportModule("gi.repository.Gtk");

    if (gtk_mod == NULL)
    {
        PyErr_SetString(PyExc_TypeError, "unable to find the Gtk Python module");
        goto done;
    }

    widget_type = PyObject_GetAttrString(gtk_mod, "Widget");

    Py_DECREF(gtk_mod);

    ret = PyObject_TypeCheck(arg, (PyTypeObject *)widget_type);

    Py_DECREF(widget_type);

    if (!ret)
    {
        PyErr_SetString(PyExc_TypeError, "unable to convert the provided argument to GTK widget");
        goto done;
    }

    *((GtkWidget **)dst) = GTK_WIDGET(pygobject_get(arg));

    result = 1;

 done:

    return result;

}