/*

 * gnome-keyring

 *

 * Copyright (C) 2010 Stefan Walter

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU Lesser General Public License as

 * published by the Free Software Foundation; either version 2.1 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

 * Lesser General Public License for more details.

 *

 * You should have received a copy of the GNU Lesser General Public

 * License along with this program; if not, see <http://www.gnu.org/licenses/>.

 */

#include "config.h"

#include "gcr-collection.h"

#include "gcr-single-collection.h"

#include <string.h>

/**

 * GcrSingleCollection:

 *

 * A single implementation of #GcrCollection.

 */

struct _GcrSingleCollection {

	GObject parent;

	GObject *object;

};

/**

 * GcrSingleCollectionClass:

 * @parent_class: The parent class

 *

 * The class for #GcrSingleCollection.

 */

struct _GcrSingleCollectionClass {

	GObjectClass parent_class;

};

static void _gcr_single_collection_iface (GcrCollectionIface *iface);

G_DEFINE_TYPE_WITH_CODE (GcrSingleCollection, _gcr_single_collection, G_TYPE_OBJECT,

                         G_IMPLEMENT_INTERFACE (GCR_TYPE_COLLECTION, _gcr_single_collection_iface));

/* -----------------------------------------------------------------------------

 * OBJECT

 */

static void

_gcr_single_collection_init (GcrSingleCollection *self)

{

}

static void

_gcr_single_collection_dispose (GObject *obj)

{

	GcrSingleCollection *self = GCR_SINGLE_COLLECTION (obj);

	_gcr_single_collection_set_object (self, NULL);

	G_OBJECT_CLASS (_gcr_single_collection_parent_class)->dispose (obj);

}

static void

_gcr_single_collection_class_init (GcrSingleCollectionClass *klass)

{

	GObjectClass *gobject_class = G_OBJECT_CLASS (klass);

	gobject_class->dispose = _gcr_single_collection_dispose;

}

static guint

_gcr_single_collection_real_get_length (GcrCollection *coll)

{

	GcrSingleCollection *self = GCR_SINGLE_COLLECTION (coll);

	return self->object == NULL ? 0 : 1;

}

static GList*

_gcr_single_collection_real_get_objects (GcrCollection *coll)

{

	GcrSingleCollection *self = GCR_SINGLE_COLLECTION (coll);

	return self->object == NULL ? NULL : g_list_append (NULL, self->object);

}

static gboolean

_gcr_single_collection_real_contains (GcrCollection *collection,

                                      GObject *object)

{

	GcrSingleCollection *self = GCR_SINGLE_COLLECTION (collection);

	return self->object == object;

}

static void

_gcr_single_collection_iface (GcrCollectionIface *iface)

{

	iface->get_length = _gcr_single_collection_real_get_length;

	iface->get_objects = _gcr_single_collection_real_get_objects;

	iface->contains = _gcr_single_collection_real_contains;

}

/* -----------------------------------------------------------------------------

 * PUBLIC

 */

GcrCollection *

_gcr_single_collection_new (GObject *object)

{

	GcrSingleCollection *self;

	self = g_object_new (GCR_TYPE_SINGLE_COLLECTION, NULL);

	_gcr_single_collection_set_object (self, object);

	return GCR_COLLECTION (self);

}

GObject *

_gcr_single_collection_get_object (GcrSingleCollection *self)

{

	g_return_val_if_fail (GCR_IS_SINGLE_COLLECTION (self), NULL);

	return self->object;

}

void

_gcr_single_collection_set_object (GcrSingleCollection *self,

                                   GObject *object)

{

	GObject *obj;

	g_return_if_fail (GCR_IS_SINGLE_COLLECTION (self));

	g_return_if_fail (object == NULL || G_IS_OBJECT (object));

	if (object == self->object)

		return;

	if (self->object) {

		obj = self->object;

		self->object = NULL;

		gcr_collection_emit_removed (GCR_COLLECTION (self), obj);

		g_object_unref (obj);

	}

	if (object) {

		self->object = g_object_ref (object);

		gcr_collection_emit_added (GCR_COLLECTION (self), self->object);

	}

}