Struct druid::piet::cairo::glib::SendWeakRef

pub struct SendWeakRef<T>(_, _)
where
         T: ObjectType;

A weak reference to the object it was created for that can be sent to different threads even for object types that don’t implement Send.

Trying to upgrade the weak reference from another thread than the one where it was created on will panic but dropping or cloning can be done safely from any thread.

Implementations

impl<T> SendWeakRef<T>where T: ObjectType,

pub fn new() -> SendWeakRef<T>

pub fn into_weak_ref(self) -> WeakRef<T>

Methods from Deref<Target = WeakRef<T>>

pub fn set(&self, obj: Option<&T>)

Set this weak reference to the given object.

pub fn upgrade(&self) -> Option<T>

Try to upgrade this weak reference to a strong reference.

If the stored object was already destroyed or no object was set in this weak reference then None is returned.

Trait Implementations

impl<T> Clone for SendWeakRef<T>where T: ObjectType,

fn clone(&self) -> SendWeakRef<T>

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<T> Debug for SendWeakRef<T>where T: Debug + ObjectType,

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl<T> Default for SendWeakRef<T>where T: ObjectType,

fn default() -> SendWeakRef<T>

Returns the “default value” for a type.

impl<T> Deref for SendWeakRef<T>where T: ObjectType,

type Target = WeakRef<T>

The resulting type after dereferencing.

fn deref(&self) -> &WeakRef<T>

Dereferences the value.

impl<T> From<WeakRef<T>> for SendWeakRef<T>where T: ObjectType,

fn from(v: WeakRef<T>) -> SendWeakRef<T>

Converts to this type from the input type.

impl<T> Send for SendWeakRef<T>where T: ObjectType,

impl<T> Sync for SendWeakRef<T>where T: ObjectType,