gimp/app/core/gimplist.c

258 lines
6.4 KiB
C

/* The GIMP -- an image manipulation program
* Copyright (C) 1995-1997 Spencer Kimball and Peter Mattis
*
* gimplist.c
* Copyright (C) 2001 Michael Natterer <mitch@gimp.org>
*
* 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 2 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, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include "config.h"
#include <string.h> /* strcmp */
#include <gtk/gtk.h>
#include "core-types.h"
#include "gimplist.h"
static void gimp_list_class_init (GimpListClass *klass);
static void gimp_list_init (GimpList *list);
static void gimp_list_destroy (GtkObject *object);
static void gimp_list_add (GimpContainer *container,
GimpObject *object);
static void gimp_list_remove (GimpContainer *container,
GimpObject *object);
static void gimp_list_reorder (GimpContainer *container,
GimpObject *object,
gint new_index);
static gboolean gimp_list_have (GimpContainer *container,
GimpObject *object);
static void gimp_list_foreach (GimpContainer *container,
GFunc func,
gpointer user_data);
static GimpObject * gimp_list_get_child_by_name (GimpContainer *container,
gchar *name);
static GimpObject * gimp_list_get_child_by_index (GimpContainer *container,
gint index);
static gint gimp_list_get_child_index (GimpContainer *container,
GimpObject *object);
static GimpContainerClass *parent_class = NULL;
GtkType
gimp_list_get_type (void)
{
static GtkType list_type = 0;
if (! list_type)
{
GtkTypeInfo list_info =
{
"GimpList",
sizeof (GimpList),
sizeof (GimpListClass),
(GtkClassInitFunc) gimp_list_class_init,
(GtkObjectInitFunc) gimp_list_init,
/* reserved_1 */ NULL,
/* reserved_2 */ NULL,
(GtkClassInitFunc) NULL
};
list_type = gtk_type_unique (GIMP_TYPE_CONTAINER, &list_info);
}
return list_type;
}
static void
gimp_list_class_init (GimpListClass *klass)
{
GtkObjectClass *object_class;
GimpContainerClass *container_class;
object_class = (GtkObjectClass *) klass;
container_class = (GimpContainerClass *) klass;
parent_class = gtk_type_class (GIMP_TYPE_CONTAINER);
object_class->destroy = gimp_list_destroy;
container_class->add = gimp_list_add;
container_class->remove = gimp_list_remove;
container_class->reorder = gimp_list_reorder;
container_class->have = gimp_list_have;
container_class->foreach = gimp_list_foreach;
container_class->get_child_by_name = gimp_list_get_child_by_name;
container_class->get_child_by_index = gimp_list_get_child_by_index;
container_class->get_child_index = gimp_list_get_child_index;
}
static void
gimp_list_init (GimpList *list)
{
list->list = NULL;
}
static void
gimp_list_destroy (GtkObject *object)
{
GimpList *list;
list = GIMP_LIST (object);
while (list->list)
{
gimp_container_remove (GIMP_CONTAINER (list),
GIMP_OBJECT (list->list->data));
}
if (GTK_OBJECT_CLASS (parent_class)->destroy)
GTK_OBJECT_CLASS (parent_class)->destroy (object);
}
static void
gimp_list_add (GimpContainer *container,
GimpObject *object)
{
GimpList *list;
list = GIMP_LIST (container);
list->list = g_list_prepend (list->list, object);
}
static void
gimp_list_remove (GimpContainer *container,
GimpObject *object)
{
GimpList *list;
list = GIMP_LIST (container);
list->list = g_list_remove (list->list, object);
}
static void
gimp_list_reorder (GimpContainer *container,
GimpObject *object,
gint new_index)
{
GimpList *list;
list = GIMP_LIST (container);
list->list = g_list_remove (list->list, object);
if (new_index == -1 || new_index == container->num_children - 1)
list->list = g_list_append (list->list, object);
else
list->list = g_list_insert (list->list, object, new_index);
}
static gboolean
gimp_list_have (GimpContainer *container,
GimpObject *object)
{
GimpList *list;
list = GIMP_LIST (container);
return g_list_find (list->list, object) ? TRUE : FALSE;
}
static void
gimp_list_foreach (GimpContainer *container,
GFunc func,
gpointer user_data)
{
GimpList *list;
list = GIMP_LIST (container);
g_list_foreach (list->list, func, user_data);
}
GimpContainer *
gimp_list_new (GtkType children_type,
GimpContainerPolicy policy)
{
GimpList *list;
g_return_val_if_fail (gtk_type_is_a (children_type, GIMP_TYPE_OBJECT), NULL);
g_return_val_if_fail (policy == GIMP_CONTAINER_POLICY_STRONG ||
policy == GIMP_CONTAINER_POLICY_WEAK, NULL);
list = gtk_type_new (GIMP_TYPE_LIST);
GIMP_CONTAINER (list)->children_type = children_type;
GIMP_CONTAINER (list)->policy = policy;
return GIMP_CONTAINER (list);
}
static GimpObject *
gimp_list_get_child_by_name (GimpContainer *container,
gchar *name)
{
GimpList *list;
GimpObject *object;
GList *glist;
list = GIMP_LIST (container);
for (glist = list->list; glist; glist = g_list_next (glist))
{
object = (GimpObject *) glist->data;
if (! strcmp (object->name, name))
return object;
}
return NULL;
}
static GimpObject *
gimp_list_get_child_by_index (GimpContainer *container,
gint index)
{
GimpList *list;
GList *glist;
list = GIMP_LIST (container);
glist = g_list_nth (list->list, index);
if (glist)
return (GimpObject *) glist->data;
return NULL;
}
static gint
gimp_list_get_child_index (GimpContainer *container,
GimpObject *object)
{
GimpList *list;
list = GIMP_LIST (container);
return g_list_index (list->list, (gpointer) object);
}