Struct RegistryProxy

pub struct RegistryProxy { /* private fields */ }

Implementations

impl RegistryProxy

pub fn new(channel: AsyncChannel) -> Self

Create a new Proxy for fuchsia.ui.observation.scope/Registry.

pub fn take_event_stream(&self) -> RegistryEventStream

Get a Stream of events from the remote end of the protocol.

Panics

Panics if the event stream was already taken.

pub fn register_scoped_view_tree_watcher( &self, context_view: u64, watcher: ServerEnd<ViewTreeWatcherMarker>, ) -> QueryResponseFut<(), DefaultFuchsiaResourceDialect>

Sets up a geometry ViewTreeWatcher channel which reports the view tree geometry for a specific view, identified by context_view. The data received describes the context_view and its descendant views.

This method may be called multiple times to obtain multiple geometry ViewTreeWatchers. Typical usage is to obtain just one geometry ViewTreeWatcher.

Client can freely disconnect this Registry endpoint after this method returns and the ViewTreeWatcher endpoint will remain active.

Flow control. The caller is allowed at most one in-flight call at a time. Subsequent calls must wait until the acknowledgment returns. Non-compliance results in channel closure.

Client synchronization. The method response signifies that the server has processed the channel endpoint. A client can synchronize its next actions based on this guarantee (for example, trigger a change in view geometry without the change “getting lost”).

View lifecycle. The view represented by context_view must first be created. Otherwise, geometry channel’s server endpoint is closed.

• request context_view a view’s identity, which serves as the root of a view tree
• request geometry a channel to observe context_view’s view tree

• response acknowledgement that geometry is connected to the server

Trait Implementations

impl Clone for RegistryProxy

fn clone(&self) -> RegistryProxy

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for RegistryProxy

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

Formats the value using the given formatter.

impl Proxy for RegistryProxy

type Protocol = RegistryMarker

The protocol which this Proxy controls.

fn from_channel(inner: AsyncChannel) -> Self

Create a proxy over the given channel.

fn into_channel(self) -> Result<AsyncChannel, Self>

Attempt to convert the proxy back into a channel.

fn as_channel(&self) -> &AsyncChannel

Get a reference to the proxy’s underlying channel.

fn into_client_end(self) -> Result<ClientEnd<Self::Protocol>, Self>

Attempt to convert the proxy back into a client end.

fn is_closed(&self) -> bool

Returns true if the proxy has received the PEER_CLOSED signal.

fn on_closed(&self) -> OnSignals<'_, Unowned<'_, Handle>>

Returns a future that completes when the proxy receives the PEER_CLOSED signal.

impl RegistryProxyInterface for RegistryProxy

type RegisterScopedViewTreeWatcherResponseFut = QueryResponseFut<()>

fn register_scoped_view_tree_watcher( &self, context_view: u64, watcher: ServerEnd<ViewTreeWatcherMarker>, ) -> Self::RegisterScopedViewTreeWatcherResponseFut