Struct ParentViewportWatcherSynchronousProxy

pub struct ParentViewportWatcherSynchronousProxy { /* private fields */ }

Implementations

impl ParentViewportWatcherSynchronousProxy

pub fn new(channel: Channel) -> Self

pub fn into_channel(self) -> Channel

pub fn wait_for_event( &self, deadline: MonotonicInstant, ) -> Result<ParentViewportWatcherEvent, Error>

Waits until an event arrives and returns it. It is safe for other threads to make concurrent requests while waiting for an event.

pub fn get_layout( &self, ___deadline: MonotonicInstant, ) -> Result<LayoutInfo, Error>

A hanging get for receiving layout information. Clients may receive layout information before the ParentViewportWatcher operation has been presented. This allows children to layout their content before their first call to [Present]. In transition cases where two ParentViewportWatcher channels exist at the same time, both protocol instances will be receiving different layout information.

This hanging get will only fire when the LayoutInfo is different than the previously returned LayoutInfo. Note that, since LayoutInfo is a table, only some fields may have changed.

It is invalid to call GetLayout while a previous call is still pending. Doing so will cause both this channel and the Flatland channel that handed out ParentViewportWatcher to be closed.

pub fn get_status( &self, ___deadline: MonotonicInstant, ) -> Result<ParentViewportStatus, Error>

A hanging get for receiving the status of the parent Viewport. This provides global connectivity information to the child.

This hanging get will only fire when the ParentViewportStatus is different than the previously returned ParentViewportStatus.

It is invalid to call GetStatus while a previous call is still pending. Doing so will cause both this channel and the Flatland channel that handed out ParentViewportWatcher to be closed.

Trait Implementations

impl Debug for ParentViewportWatcherSynchronousProxy

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

Formats the value using the given formatter.

impl SynchronousProxy for ParentViewportWatcherSynchronousProxy

type Proxy = ParentViewportWatcherProxy

The async proxy for the same protocol.

type Protocol = ParentViewportWatcherMarker

The protocol which this Proxy controls.

fn from_channel(inner: Channel) -> Self

Create a proxy over the given channel.

fn into_channel(self) -> Channel

Convert the proxy back into a channel.

fn as_channel(&self) -> &Channel

Get a reference to the proxy’s underlying channel.

fn is_closed(&self) -> Result<bool, Status>

Returns true if the proxy has received the PEER_CLOSED signal.