AtkRelationSet

AtkRelationSet — A set of AtkRelations, normally the set of AtkRelations which an AtkObject has.

Synopsis




            AtkRelationSet;
AtkRelationSet* atk_relation_set_new        (void);
gboolean    atk_relation_set_contains       (AtkRelationSet *set,
                                             AtkRelationType relationship);
void        atk_relation_set_remove         (AtkRelationSet *set,
                                             AtkRelation *relation);
void        atk_relation_set_add            (AtkRelationSet *set,
                                             AtkRelation *relation);
gint        atk_relation_set_get_n_relations
                                            (AtkRelationSet *set);
AtkRelation* atk_relation_set_get_relation  (AtkRelationSet *set,
                                             gint i);
AtkRelation* atk_relation_set_get_relation_by_type
                                            (AtkRelationSet *set,
                                             AtkRelationType relationship);
void        atk_relation_set_add_relation_by_type
                                            (AtkRelationSet *set,
                                             AtkRelationType relationship,
                                             AtkObject *target);

Object Hierarchy


  GObject
   +----AtkRelationSet

Description

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.

Details

AtkRelationSet

typedef struct _AtkRelationSet AtkRelationSet;

The AtkRelationSet structure should not be accessed directly.

atk_relation_set_new ()

AtkRelationSet* atk_relation_set_new        (void);

Creates a new empty relation set.

Returns : a new AtkRelationSet

atk_relation_set_contains ()

gboolean    atk_relation_set_contains       (AtkRelationSet *set,
                                             AtkRelationType relationship);

Determines whether the relation set contains a relation that matches the specified type.

set : an AtkRelationSet
relationship : an AtkRelationType
Returns : TRUE if relationship is the relationship type of a relation in set, FALSE otherwise

atk_relation_set_remove ()

void        atk_relation_set_remove         (AtkRelationSet *set,
                                             AtkRelation *relation);

Removes a relation from the relation set. This function unref's the AtkRelation so it will be deleted unless there is another reference to it.

set : an AtkRelationSet
relation : an AtkRelation

atk_relation_set_add ()

void        atk_relation_set_add            (AtkRelationSet *set,
                                             AtkRelation *relation);

Add a new relation to the current relation set if it is not already present. This function ref's the AtkRelation so the caller of this function should unref it to ensure that it will be destroyed when the AtkRelationSet is destroyed.

set : an AtkRelationSet
relation : an AtkRelation

atk_relation_set_get_n_relations ()

gint        atk_relation_set_get_n_relations
                                            (AtkRelationSet *set);

Determines the number of relations in a relation set.

set : an AtkRelationSet
Returns : an integer representing the number of relations in the set.

atk_relation_set_get_relation ()

AtkRelation* atk_relation_set_get_relation  (AtkRelationSet *set,
                                             gint i);

Determines the relation at the specified position in the relation set.

set : an AtkRelationSet
i : a gint representing a position in the set, starting from 0.
Returns : a AtkRelation, which is the relation at position i in the set.

atk_relation_set_get_relation_by_type ()

AtkRelation* atk_relation_set_get_relation_by_type
                                            (AtkRelationSet *set,
                                             AtkRelationType relationship);

Finds a relation that matches the specified type.

set : an AtkRelationSet
relationship : an AtkRelationType
Returns : an AtkRelation, which is a relation matching the specified type.

atk_relation_set_add_relation_by_type ()

void        atk_relation_set_add_relation_by_type
                                            (AtkRelationSet *set,
                                             AtkRelationType relationship,
                                             AtkObject *target);

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.

set : an AtkRelationSet
relationship : an AtkRelationType
target : an AtkObject

Since ATK 1.9