wayland_server

Struct DataInit

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pub struct DataInit<'a, D: 'static> { /* private fields */ }
Expand description

Helper to initialize client-created objects

This helper is provided to you in your Dispatch and GlobalDispatch to initialize objects created by the client, by assigning them their user-data (or ObjectData if you need to go this lower-level route).

This step is mandatory, and failing to initialize a newly created object will cause a panic.

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impl<D> DataInit<'_, D>

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pub fn init<I: Resource + 'static, U: Send + Sync + 'static>( &mut self, resource: New<I>, data: U, ) -> I
where D: Dispatch<I, U> + 'static,

Initialize an object by assigning it its user-data

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pub fn custom_init<I: Resource + 'static>( &mut self, resource: New<I>, data: Arc<dyn ObjectData<D>>, ) -> I

Set a custom ObjectData for this object

This object data is not managed by wayland-server, as a result you will not be able to retreive it through Resource::data(). Instead, you’ll need to retrieve it using Resource::object_data() and handle the downcasting yourself.

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pub fn post_error<I: Resource + 'static>( &mut self, _resource: New<I>, code: impl Into<u32>, error: impl Into<String>, )

Post an error on an uninitialized object.

This is only meant to be used in GlobalDispatch where a global protocol object is instantiated.

Trait Implementations§

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impl<'a, D: Debug + 'static> Debug for DataInit<'a, D>

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

Formats the value using the given formatter. Read more

Auto Trait Implementations§

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impl<'a, D> Freeze for DataInit<'a, D>

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impl<'a, D> !RefUnwindSafe for DataInit<'a, D>

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impl<'a, D> Send for DataInit<'a, D>

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impl<'a, D> Sync for DataInit<'a, D>

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impl<'a, D> Unpin for DataInit<'a, D>

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impl<'a, D> !UnwindSafe for DataInit<'a, D>

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> Downcast for T
where T: Any,

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fn into_any(self: Box<T>) -> Box<dyn Any>

Convert Box<dyn Trait> (where Trait: Downcast) to Box<dyn Any>. Box<dyn Any> can then be further downcast into Box<ConcreteType> where ConcreteType implements Trait.
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fn into_any_rc(self: Rc<T>) -> Rc<dyn Any>

Convert Rc<Trait> (where Trait: Downcast) to Rc<Any>. Rc<Any> can then be further downcast into Rc<ConcreteType> where ConcreteType implements Trait.
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fn as_any(&self) -> &(dyn Any + 'static)

Convert &Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot generate &Any’s vtable from &Trait’s.
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fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)

Convert &mut Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot generate &mut Any’s vtable from &mut Trait’s.
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impl<T> DowncastSync for T
where T: Any + Send + Sync,

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fn into_any_arc(self: Arc<T>) -> Arc<dyn Any + Sync + Send>

Convert Arc<Trait> (where Trait: Downcast) to Arc<Any>. Arc<Any> can then be further downcast into Arc<ConcreteType> where ConcreteType implements Trait.
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.