gimp/app/plug-in/gimppluginmanager-history.c

126 lines
3.3 KiB
C

/* GIMP - The GNU Image Manipulation Program
* Copyright (C) 1995-2003 Spencer Kimball and Peter Mattis
*
* gimppluginmanager-history.c
*
* 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 <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <glib-object.h>
#include "libgimpbase/gimpbase.h"
#include "plug-in-types.h"
#include "config/gimpcoreconfig.h"
#include "core/gimp.h"
#include "gimppluginmanager.h"
#include "gimppluginmanager-history.h"
#include "gimppluginprocedure.h"
guint
gimp_plug_in_manager_history_size (GimpPlugInManager *manager)
{
g_return_val_if_fail (GIMP_IS_PLUG_IN_MANAGER (manager), 0);
return MAX (1, manager->gimp->config->plug_in_history_size);
}
guint
gimp_plug_in_manager_history_length (GimpPlugInManager *manager)
{
g_return_val_if_fail (GIMP_IS_PLUG_IN_MANAGER (manager), 0);
return g_slist_length (manager->history);
}
GimpPlugInProcedure *
gimp_plug_in_manager_history_nth (GimpPlugInManager *manager,
guint n)
{
g_return_val_if_fail (GIMP_IS_PLUG_IN_MANAGER (manager), NULL);
return g_slist_nth_data (manager->history, n);
}
void
gimp_plug_in_manager_history_add (GimpPlugInManager *manager,
GimpPlugInProcedure *procedure)
{
GSList *list;
gint history_size;
g_return_if_fail (GIMP_IS_PLUG_IN_MANAGER (manager));
g_return_if_fail (GIMP_IS_PLUG_IN_PROCEDURE (procedure));
/* return early if the procedure is already at the top */
if (manager->history && manager->history->data == procedure)
return;
history_size = gimp_plug_in_manager_history_size (manager);
manager->history = g_slist_remove (manager->history, procedure);
manager->history = g_slist_prepend (manager->history, procedure);
list = g_slist_nth (manager->history, history_size);
if (list)
{
manager->history = g_slist_remove_link (manager->history, list);
g_slist_free (list);
}
gimp_plug_in_manager_history_changed (manager);
}
void
gimp_plug_in_manager_history_remove (GimpPlugInManager *manager,
GimpPlugInProcedure *procedure)
{
GSList *link;
g_return_if_fail (GIMP_IS_PLUG_IN_MANAGER (manager));
g_return_if_fail (GIMP_IS_PLUG_IN_PROCEDURE (procedure));
link = g_slist_find (manager->history, procedure);
if (link)
{
manager->history = g_slist_delete_link (manager->history, link);
gimp_plug_in_manager_history_changed (manager);
}
}
void
gimp_plug_in_manager_history_clear (GimpPlugInManager *manager)
{
g_return_if_fail (GIMP_IS_PLUG_IN_MANAGER (manager));
if (manager->history)
{
g_slist_free (manager->history);
manager->history = NULL;
gimp_plug_in_manager_history_changed (manager);
}
}