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/* ATK - Accessibility Toolkit
* Copyright 2001 Sun Microsystems Inc.
*
* This library 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 of the License, or (at your option) any later version.
*
* This library 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 library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include <string.h>
#include <glib-object.h>
#include "atkobject.h"
#include "atkrelation.h"
static void atk_relation_class_init (AtkRelationClass *klass);
static void atk_relation_finalize (GObject *object);
GType
atk_relation_get_type (void)
{
static GType type = 0;
if (!type)
{
static const GTypeInfo typeInfo =
{
sizeof (AtkRelationClass),
(GBaseInitFunc) NULL,
(GBaseFinalizeFunc) NULL,
(GClassInitFunc) atk_relation_class_init,
(GClassFinalizeFunc) NULL,
NULL,
sizeof (AtkRelation),
0,
(GInstanceInitFunc) NULL,
} ;
type = g_type_register_static (G_TYPE_OBJECT, "AtkRelation", &typeInfo, 0) ;
}
return type;
}
static void
atk_relation_class_init (AtkRelationClass *klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
gobject_class->finalize = atk_relation_finalize;
}
/**
* atk_relation_type_register:
* @name: a name string
*
* Associate @name with a new #AtkRelationType
*
* Returns: an #AtkRelationType associated with @name
**/
AtkRelationType
atk_relation_type_register (const gchar *name)
{
/* TODO: associate name with new type */
static guint type = ATK_RELATION_LAST_DEFINED;
return (++type);
}
/**
* atk_relation_type_from_string:
* @name: a string which is the (non-localized) name of an ATK relation type.
*
* Get the #AtkRelationType type corresponding to a relation name.
*
* Returns: the #AtkRelationType enumerated type corresponding to the specified name,
* or #ATK_RELATION_NULL if no matching relation type is found.
**/
AtkRelationType
atk_relation_type_from_string (const gchar *name)
{
/*
* TODO: implement properly,
* checking type namelist in conjunction with above function.
*/
if ( !strcmp (name, "controlled_by") ) return ATK_RELATION_CONTROLLED_BY;
else if (!strcmp (name, "controller_for")) return ATK_RELATION_CONTROLLER_FOR;
else if (!strcmp (name, "label_for")) return ATK_RELATION_LABEL_FOR;
else if (!strcmp (name, "labelled_by")) return ATK_RELATION_LABELLED_BY;
else if (!strcmp (name, "member_of")) return ATK_RELATION_MEMBER_OF;
else return ATK_RELATION_NULL;
}
/**
* atk_relation_new:
* @targets: an array of pointers to #AtkObjects
* @n_targets: number of #AtkObjects pointed to by @targets
* @relationship: an #AtkRelationType with which to create the new
* #AtkRelation
*
* Create a new relation for the specified key and the specified list
* of targets.
*
* Returns: a pointer to a new #AtkRelation
**/
AtkRelation*
atk_relation_new (AtkObject **targets,
gint n_targets,
AtkRelationType relationship)
{
AtkRelation *relation;
int i;
GPtrArray *array;
g_return_val_if_fail (targets != NULL, NULL);
relation = g_object_new (ATK_TYPE_RELATION, NULL);
array = g_ptr_array_sized_new (n_targets);
for (i = 0; i < n_targets; i++)
{
/*
* Add a reference to AtkObject being added to a relation
*/
g_object_ref (targets[i]);
g_ptr_array_add (array, targets[i]);
}
relation->target = array;
relation->relationship = relationship;
return relation;
}
/**
* atk_relation_get_relation_type:
* @relation: an #AtkRelation
*
* Gets the type of @relation
*
* Returns: the type of @relation
**/
AtkRelationType
atk_relation_get_relation_type (AtkRelation *relation)
{
g_return_val_if_fail (ATK_IS_RELATION (relation), 0);
return relation->relationship;
}
/**
* atk_relation_get_target:
* @relation: an #AtkRelation
*
* Gets the target list of @relation
*
* Returns: the target list of @relation
**/
GPtrArray*
atk_relation_get_target (AtkRelation *relation)
{
g_return_val_if_fail (ATK_IS_RELATION (relation), FALSE);
return relation->target;
}
static void
atk_relation_finalize (GObject *object)
{
AtkRelation *relation;
g_return_if_fail (ATK_IS_RELATION (object));
relation = ATK_RELATION (object);
if (relation->target)
{
gint i;
for (i = 0; i < relation->target->len; i++)
{
/*
* Remove a reference to AtkObject being removed from a relation
*/
g_object_unref (g_ptr_array_index (relation->target, i));
}
g_ptr_array_free (relation->target, TRUE);
}
}
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