Atk.RelationSet¶

Subclasses:	None

Methods¶

Inherited:	GObject.Object (37)
Structs:	GObject.ObjectClass (5)

class	`new` ()
	`add` (relation)
	`add_relation_by_type` (relationship, target)
	`contains` (relationship)
	`contains_target` (relationship, target)
	`get_n_relations` ()
	`get_relation` (i)
	`get_relation_by_type` (relationship)
	`remove` (relation)

Virtual Methods¶

Inherited:	GObject.Object (7)

Properties¶

None

Signals¶

Inherited:	GObject.Object (1)

Fields¶

Inherited:	GObject.Object (1)

Name	Type	Access	Description
parent	`GObject.Object`	r
relations	[`object`]	r

Class Details¶

class Atk.RelationSet(**kwargs)¶

Bases:	`GObject.Object`
Abstract:	No
Structure:	`Atk.RelationSetClass`

The Atk.RelationSet 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.

classmethod new()[source]¶

Returns:	a new `Atk.RelationSet`
Return type:	`Atk.RelationSet`

Creates a new empty relation set.

add(relation)[source]¶

Parameters:	relation (`Atk.Relation`) – an `Atk.Relation`

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

add_relation_by_type(relationship, target)[source]¶

Parameters:	relationship (`Atk.RelationType`) – an `Atk.RelationType` target (`Atk.Object`) – an `Atk.Object`

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.

New in version 1.9.

contains(relationship)[source]¶

Parameters:	relationship (`Atk.RelationType`) – an `Atk.RelationType`
Returns:	`True` if relationship is the relationship type of a relation in self, `False` otherwise
Return type:	`bool`

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

contains_target(relationship, target)[source]¶

Parameters:	relationship (`Atk.RelationType`) – an `Atk.RelationType` target (`Atk.Object`) – an `Atk.Object`
Returns:	`True` if self contains a relation with the relationship type relationship with an object target, `False` otherwise
Return type:	`bool`

Determines whether the relation set contains a relation that matches the specified pair formed by type relationship and object target.

get_n_relations()[source]¶

Returns:	an integer representing the number of relations in the set.
Return type:	`int`

Determines the number of relations in a relation set.

get_relation(i)[source]¶

Parameters:	i (`int`) – a `int` representing a position in the set, starting from 0.
Returns:	a `Atk.Relation`, which is the relation at position i in the set.
Return type:	`Atk.Relation`

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

get_relation_by_type(relationship)[source]¶

Parameters:	relationship (`Atk.RelationType`) – an `Atk.RelationType`
Returns:	an `Atk.Relation`, which is a relation matching the specified type.
Return type:	`Atk.Relation`

Finds a relation that matches the specified type.

remove(relation)[source]¶

Parameters:	relation (`Atk.Relation`) – an `Atk.Relation`

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