Trait titanium::desktop::gui::libdruid::piet::cairo::glib::clone::Upgrade

pub trait Upgrade: Sized {
    type Strong;

    // Required method
    fn upgrade(&self) -> Option<Self::Strong>;
}

Trait for generalizing upgrading a weak reference to a strong reference.

Required Associated Types

type Strong

Strong reference type.

Required Methods

fn upgrade(&self) -> Option<Self::Strong>

Try upgrading a weak reference to a strong reference.

Implementations on Foreign Types

impl<T> Upgrade for Weak<T>

type Strong = Arc<T>

fn upgrade(&self) -> Option<<Weak<T> as Upgrade>::Strong>

impl<T> Upgrade for Weak<T>

type Strong = Rc<T>

fn upgrade(&self) -> Option<<Weak<T> as Upgrade>::Strong>

Implementors

impl<T> Upgrade for PhantomData<T>

type Strong = PhantomData<T>

impl<T> Upgrade for WeakRef<T>where T: Downgrade + ObjectType,

type Strong = T

impl<T> Upgrade for ObjectImplWeakRef<T>where T: ObjectSubclass,

type Strong = ObjectImplRef<T>