Struct ViewRefControl 

#[repr(C)]
pub struct ViewRefControl {
    pub reference: EventPair,
}

A ViewRefControl is the peer to a ViewRef. Their references are linked.

Like ViewRef, a ViewRefControl is a typed handle to an eventpair. Unlike ViewRef, a ViewRefControl’s handle is unique. Scenic uses this property when it ties a ViewRefControl to a View, arranged to share fate. When a View is destroyed, the associated destruction of its ViewRefControl triggers an automatic ZX_EVENTPAIR_PEER_CLOSED signal sent to all ViewRef holders; hence ViewRef holders may track View lifetime.

As part of View creation, the client creates a linked ViewRef/ViewRefControl pair and hands the pair to Scenic (ViewRef is described above). The client must not clone the ViewRefControl. It must not remove or modify the ViewRefControl’s capabilities; otherwise the View is not created.

Fields

reference: EventPair

Trait Implementations

impl Debug for ViewRefControl

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

Formats the value using the given formatter.

impl<___E> Encode<ViewRefControl, ___E> for ViewRefControl

where ___E: InternalHandleEncoder + ?Sized + HandleEncoder,

const COPY_OPTIMIZATION: CopyOptimization<Self, ViewRefControl>

Whether the conversion from Self to W is equivalent to copying the raw bytes of Self.

fn encode( self, encoder_: &mut ___E, out_: &mut MaybeUninit<ViewRefControl>, _: (), ) -> Result<(), EncodeError>

Encodes this value into an encoder and output.

impl<___E> EncodeOption<Box<'static, ViewRefControl>, ___E> for ViewRefControl

where ___E: Encoder + ?Sized, ViewRefControl: Encode<ViewRefControl, ___E>,

fn encode_option( this: Option<Self>, encoder: &mut ___E, out: &mut MaybeUninit<Box<'static, ViewRefControl>>, _: (), ) -> Result<(), EncodeError>

Encodes this optional value into an encoder and output.

impl FromWire<ViewRefControl> for ViewRefControl

const COPY_OPTIMIZATION: CopyOptimization<ViewRefControl, Self>

Whether the conversion from W to Self is equivalent to copying the raw bytes of W.

fn from_wire(wire: ViewRefControl) -> Self

Converts the given owned value to this type.

impl PartialEq for ViewRefControl

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

Tests for self and other values to be equal, and is used by ==.

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

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

impl StructuralPartialEq for ViewRefControl