Struct gpui2::WeakModel

pub struct WeakModel<T> { /* private fields */ }

Implementations

impl<T: 'static> WeakModel<T>

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

Upgrade this weak model reference into a strong model reference

pub fn update<C, R>( &self, cx: &mut C, update: impl FnOnce(&mut T, &mut ModelContext<'_, T>) -> R ) -> Result<R>where C: Context, Result<C::Result<R>>: Flatten<R>,

Update the entity referenced by this model with the given function if the referenced entity still exists. Returns an error if the entity has been released.

The update function receives a context appropriate for its environment. When updating in an AppContext, it receives a ModelContext. When updating an a WindowContext, it receives a ViewContext.

Methods from Deref<Target = AnyWeakModel>

pub fn entity_id(&self) -> EntityId

pub fn is_upgradable(&self) -> bool

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

Trait Implementations

impl<T> Clone for WeakModel<T>

fn clone(&self) -> Self

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<T> Deref for WeakModel<T>

type Target = AnyWeakModel

The resulting type after dereferencing.

fn deref(&self) -> &Self::Target

Dereferences the value.

impl<T> DerefMut for WeakModel<T>

fn deref_mut(&mut self) -> &mut Self::Target

Mutably dereferences the value.

impl<T> From<WeakModel<T>> for AnyWeakModel

fn from(model: WeakModel<T>) -> Self

Converts to this type from the input type.

impl<T> Hash for WeakModel<T>

fn hash<H: Hasher>(&self, state: &mut H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl<T> PartialEq<Model<T>> for WeakModel<T>

fn eq(&self, other: &Model<T>) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<T> PartialEq<WeakModel<T>> for Model<T>

fn eq(&self, other: &WeakModel<T>) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<T> PartialEq<WeakModel<T>> for WeakModel<T>

fn eq(&self, other: &Self) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<T> Eq for WeakModel<T>

impl<T> Send for WeakModel<T>

impl<T> Sync for WeakModel<T>