* Boston, MA 02111-1307, USA.
*/
+#include "config.h"
+
#include <glib-object.h>
#include "atk.h"
+/**
+ * SECTION:atkrelationset
+ * @Short_description: A set of AtkRelations, normally the set of
+ * AtkRelations which an AtkObject has.
+ * @Title:AtkRelationSet
+ *
+ * The AtkRelationSet held by an object establishes its relationships
+ * with objects beyond the normal "parent/child" hierarchical
+ * relationships that all user interface objects have.
+ * AtkRelationSets establish whether objects are labelled or
+ * controlled by other components, share group membership with other
+ * components (for instance within a radio-button group), or share
+ * content which "flows" between them, among other types of possible
+ * relationships.
+ */
+
static gpointer parent_class = NULL;
static void atk_relation_set_class_init (AtkRelationSetClass *klass);
AtkRelation *relation)
{
GPtrArray *array_item;
+ AtkRelationType relationship;
g_return_if_fail (ATK_IS_RELATION_SET (set));
array_item = set->relations;
if (array_item == NULL)
return;
-
+
if (g_ptr_array_remove (array_item, relation))
{
g_object_unref (relation);
}
+ else
+ {
+ relationship = atk_relation_get_relation_type (relation);
+ if (atk_relation_set_contains (set, relationship))
+ {
+ AtkRelation *exist_relation;
+ gint i;
+ exist_relation = atk_relation_set_get_relation_by_type (set, relationship);
+ for (i = 0; i < relation->target->len; i++)
+ {
+ AtkObject *target = g_ptr_array_index(relation->target, i);
+ atk_relation_remove_target (exist_relation, target);
+ }
+ }
+ }
}
/**
atk_relation_set_add (AtkRelationSet *set,
AtkRelation *relation)
{
+ AtkRelationType relationship;
+
g_return_if_fail (ATK_IS_RELATION_SET (set));
g_return_if_fail (relation != NULL);
{
set->relations = g_ptr_array_new ();
}
- g_ptr_array_add (set->relations, relation);
- g_object_ref (relation);
+
+ relationship = atk_relation_get_relation_type (relation);
+ if (!atk_relation_set_contains (set, relationship))
+ {
+ g_ptr_array_add (set->relations, relation);
+ g_object_ref (relation);
+ }
+ else
+ {
+ AtkRelation *exist_relation;
+ gint i;
+ exist_relation = atk_relation_set_get_relation_by_type (set, relationship);
+ for (i = 0; i < relation->target->len; i++)
+ {
+ AtkObject *target = g_ptr_array_index(relation->target, i);
+ atk_relation_add_target (exist_relation, target);
+ }
+ }
}
/**
gint
atk_relation_set_get_n_relations (AtkRelationSet *set)
{
- g_return_val_if_fail (ATK_IS_RELATION_SET (set), FALSE);
+ g_return_val_if_fail (ATK_IS_RELATION_SET (set), 0);
if (set->relations == NULL)
return 0;
}
/**
- * atk_relation_set_get_relation
+ * atk_relation_set_get_relation:
* @set: an #AtkRelationSet
* @i: a gint representing a position in the set, starting from 0.
*
* Determines the relation at the specified position in the relation set.
*
- * Returns: a #AtkRelation, which is the relation at position i in the set.
+ * Returns: (transfer none): a #AtkRelation, which is the relation at
+ * position i in the set.
**/
AtkRelation*
atk_relation_set_get_relation (AtkRelationSet *set,
GPtrArray *array_item;
AtkRelation* item;
- g_return_val_if_fail (ATK_IS_RELATION_SET (set), FALSE);
+ g_return_val_if_fail (ATK_IS_RELATION_SET (set), NULL);
g_return_val_if_fail (i >= 0, NULL);
array_item = set->relations;
*
* Finds a relation that matches the specified type.
*
- * Returns: an #AtkRelation, which is a relation matching the specified type.
+ * Returns: (transfer none): an #AtkRelation, which is a relation matching the
+ * specified type.
**/
AtkRelation*
atk_relation_set_get_relation_by_type (AtkRelationSet *set,
AtkRelation *item;
gint i;
- g_return_val_if_fail (ATK_IS_RELATION_SET (set), FALSE);
+ g_return_val_if_fail (ATK_IS_RELATION_SET (set), NULL);
array_item = set->relations;
if (array_item == NULL)
G_OBJECT_CLASS (parent_class)->finalize (object);
}
+
+/**
+ * atk_relation_set_add_relation_by_type:
+ * @set: an #AtkRelationSet
+ * @relationship: an #AtkRelationType
+ * @target: an #AtkObject
+ *
+ * Add a new relation of the specified type with the specified target to
+ * the current relation set if the relation set does not contain a relation
+ * of that type. If it is does contain a relation of that typea the target
+ * is added to the relation.
+ *
+ * Since: 1.9
+ **/
+void
+atk_relation_set_add_relation_by_type (AtkRelationSet *set,
+ AtkRelationType relationship,
+ AtkObject *target)
+{
+ AtkRelation *relation;
+
+ g_return_if_fail (ATK_IS_RELATION_SET (set));
+ g_return_if_fail (ATK_IS_OBJECT (target));
+
+ relation = atk_relation_set_get_relation_by_type (set,
+ relationship);
+ if (relation)
+ {
+ atk_relation_add_target (relation, target);
+ }
+ else
+ {
+ /* the relation hasn't been created yet ... */
+ relation = atk_relation_new (&target, 1, relationship);
+ atk_relation_set_add (set, relation);
+ g_object_unref(relation);
+ }
+}
+
+/**
+ * atk_relation_set_contains_target:
+ * @set: an #AtkRelationSet
+ * @relationship: an #AtkRelationType
+ * @target: an #AtkObject
+ *
+ * Determines whether the relation set contains a relation that
+ * matches the specified pair formed by type @relationship and object
+ * @target.
+ *
+ * Returns: %TRUE if @set contains a relation with the relationship
+ * type @relationship with an object @target, %FALSE otherwise
+ **/
+
+gboolean
+atk_relation_set_contains_target (AtkRelationSet *set,
+ AtkRelationType relationship,
+ AtkObject *target)
+{
+ GPtrArray *array_relations;
+ GPtrArray *array_target;
+ AtkObject *current_target;
+ AtkRelation *relation;
+ gint i;
+ gint c;
+
+ g_return_val_if_fail (ATK_IS_RELATION_SET (set), FALSE);
+ g_return_val_if_fail (ATK_IS_OBJECT (target), FALSE);
+
+ array_relations = set->relations;
+ if (array_relations == NULL)
+ return FALSE;
+
+ for (i = 0; i < array_relations->len; i++)
+ {
+ relation = g_ptr_array_index (array_relations, i);
+ if (relation->relationship == relationship)
+ {
+ array_target = atk_relation_get_target (relation);
+ for (c = 0; c < array_target->len; c++)
+ {
+ current_target = g_ptr_array_index (array_target, c);
+ if (target == current_target)
+ return TRUE;
+ }
+ }
+ }
+
+ return FALSE;
+}
projects / platform / upstream / atk.git / blobdiff