[−][src]Trait atk::StateSetExt

pub trait StateSetExt: 'static {
    fn add_state(&self, type_: StateType) -> bool;

    fn and_sets<P: IsA<StateSet>>(&self, compare_set: &P) -> Option<StateSet>;

    fn clear_states(&self);

    fn contains_state(&self, type_: StateType) -> bool;

    fn is_empty(&self) -> bool;

    fn or_sets<P: IsA<StateSet>>(&self, compare_set: &P) -> Option<StateSet>;

    fn remove_state(&self, type_: StateType) -> bool;

    fn xor_sets<P: IsA<StateSet>>(&self, compare_set: &P) -> Option<StateSet>;
}

Trait containing all StateSet methods.

Implementors

StateSet

Required methods

fn add_state(&self, type_: StateType) -> bool

Adds the state of the specified type to the state set if it is not already present.

Note that because an StateSet is a read-only object, this method should be used to add a state to a newly-created set which will then be returned by AtkObjectExt::ref_state_set. It should not be used to modify the existing state of an object. See also AtkObjectExt::notify_state_change.

type_

an StateType

Returns

true if the state for type_ is not already in self.

fn and_sets<P: IsA<StateSet>>(&self, compare_set: &P) -> Option<StateSet>

Constructs the intersection of the two sets, returning None if the intersection is empty.

compare_set

another StateSet

Returns

a new StateSet which is the intersection of the two sets.

fn clear_states(&self)

Removes all states from the state set.

fn contains_state(&self, type_: StateType) -> bool

Checks whether the state for the specified type is in the specified set.

type_

an StateType

Returns

true if type_ is the state type is in self.

fn is_empty(&self) -> bool

Checks whether the state set is empty, i.e. has no states set.

Returns

true if self has no states set, otherwise false

fn or_sets<P: IsA<StateSet>>(&self, compare_set: &P) -> Option<StateSet>

Constructs the union of the two sets.

compare_set

another StateSet

Returns

a new StateSet which is the union of the two sets, returning None is empty.

fn remove_state(&self, type_: StateType) -> bool

Removes the state for the specified type from the state set.

Note that because an StateSet is a read-only object, this method should be used to remove a state to a newly-created set which will then be returned by AtkObjectExt::ref_state_set. It should not be used to modify the existing state of an object. See also AtkObjectExt::notify_state_change.

type_

an AtkType

Returns

true if type_ was the state type is in self.

fn xor_sets<P: IsA<StateSet>>(&self, compare_set: &P) -> Option<StateSet>

Constructs the exclusive-or of the two sets, returning None is empty. The set returned by this operation contains the states in exactly one of the two sets.

compare_set

another StateSet

Returns

a new StateSet which contains the states which are in exactly one of the two sets.

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Implementors

impl<O: IsA<StateSet>> StateSetExt for O[src]

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