/* PIKA - Photo and Image Kooker Application
 * a rebranding of The GNU Image Manipulation Program (created with heckimp)
 * A derived work which may be trivial. However, any changes may be (C)2023 by Aldercone Studio
 *
 * Original copyright, applying to most contents (license remains unchanged): 
 * Copyright (C) 1995 Spencer Kimball and Peter Mattis
 *
 * pikaasync.h
 * Copyright (C) 2018 Ell
 *
 * This program 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.
 *
 * This program 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 this program.  If not, see <https://www.gnu.org/licenses/>.
 */

#ifndef __PIKA_ASYNC_H__
#define __PIKA_ASYNC_H__


#define PIKA_TYPE_ASYNC            (pika_async_get_type ())
#define PIKA_ASYNC(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), PIKA_TYPE_ASYNC, PikaAsync))
#define PIKA_ASYNC_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), PIKA_TYPE_ASYNC, PikaAsyncClass))
#define PIKA_IS_ASYNC(obj)         (G_TYPE_CHECK_INSTANCE_TYPE ((obj), PIKA_TYPE_ASYNC))
#define PIKA_IS_ASYNC_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), PIKA_TYPE_ASYNC))
#define PIKA_ASYNC_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj), PIKA_TYPE_ASYNC, PikaAsyncClass))


typedef void (* PikaAsyncCallback) (PikaAsync *async,
                                    gpointer   data);


typedef struct _PikaAsyncPrivate PikaAsyncPrivate;
typedef struct _PikaAsyncClass   PikaAsyncClass;

struct _PikaAsync
{
  GObject           parent_instance;

  PikaAsyncPrivate *priv;
};

struct _PikaAsyncClass
{
  GObjectClass  parent_class;

  /*  signals  */
  void   (* waiting) (PikaAsync *async);
};


GType       pika_async_get_type                (void) G_GNUC_CONST;

PikaAsync * pika_async_new                     (void);

gboolean    pika_async_is_synced               (PikaAsync         *async);

void        pika_async_add_callback            (PikaAsync         *async,
                                                PikaAsyncCallback  callback,
                                                gpointer           data);
void        pika_async_add_callback_for_object (PikaAsync         *async,
                                                PikaAsyncCallback  callback,
                                                gpointer           data,
                                                gpointer           gobject);
void        pika_async_remove_callback         (PikaAsync         *async,
                                                PikaAsyncCallback  callback,
                                                gpointer           data);

gboolean    pika_async_is_stopped              (PikaAsync         *async);

void        pika_async_finish                  (PikaAsync         *async,
                                                gpointer           result);
void        pika_async_finish_full             (PikaAsync         *async,
                                                gpointer           result,
                                                GDestroyNotify     result_destroy_func);
gboolean    pika_async_is_finished             (PikaAsync         *async);
gpointer    pika_async_get_result              (PikaAsync         *async);

void        pika_async_abort                   (PikaAsync         *async);

gboolean    pika_async_is_canceled             (PikaAsync         *async);

void        pika_async_cancel_and_wait         (PikaAsync         *async);


/*  stats  */

gint        pika_async_get_n_running           (void);


#endif /* __PIKA_ASYNC_H__ */