fidl_fuchsia_ui_focus/

fidl_fuchsia_ui_focus.rs

// WARNING: This file is machine generated by fidlgen.

#![warn(clippy::all)]
#![allow(unused_parens, unused_mut, unused_imports, nonstandard_style)]

use bitflags::bitflags;
use fidl::client::QueryResponseFut;
use fidl::encoding::{MessageBufFor, ProxyChannelBox, ResourceDialect};
use fidl::endpoints::{ControlHandle as _, Responder as _};
use futures::future::{self, MaybeDone, TryFutureExt};
use zx_status;

#[derive(Debug, PartialEq)]
pub struct FocusChainListenerOnFocusChangeRequest {
    pub focus_chain: FocusChain,
}

impl fidl::Standalone<fidl::encoding::DefaultFuchsiaResourceDialect>
    for FocusChainListenerOnFocusChangeRequest
{
}

#[derive(Debug, Eq, Hash, Ord, PartialEq, PartialOrd)]
pub struct FocusChainListenerRegistryRegisterRequest {
    pub listener: fidl::endpoints::ClientEnd<FocusChainListenerMarker>,
}

impl fidl::Standalone<fidl::encoding::DefaultFuchsiaResourceDialect>
    for FocusChainListenerRegistryRegisterRequest
{
}

/// A FocusChain tracks the status of the View hierarchy as View focus changes.
///
/// Reception. Only certain components may receive a FocusChain, as it
/// captures global information about the scene graph.
#[derive(Debug, Default, PartialEq)]
pub struct FocusChain {
    /// The `focus_chain` is reported in order of dominance in the View
    /// hierarchy; each adjacent pair of elements represents a
    /// parent-child relationship.
    ///
    /// The `focus_chain` MAY be unset when `FocusChain` message is received, if
    /// the message is sent very early in the scene setup, before the first
    /// view is available.
    ///
    /// When `focus_chain` is set, however, the root View is always present
    /// and occupies slot 0 in the `focus_chain`.  The newly-focused View
    /// receives a `fuchsia.ui.input.FocusEvent` and occupies the final slot
    /// in the vector.
    ///
    /// If a View gets destroyed, a `FocusChain` holder that listens will
    /// receive a `ZX_EVENTPAIR_PEER_CLOSED` signal on the corresponding
    /// `ViewRef`.
    ///
    /// ## Invalidation.
    ///
    /// A FocusChain is invalid if any one if its ViewRefs is
    /// invalid.
    pub focus_chain: Option<Vec<fidl_fuchsia_ui_views::ViewRef>>,
    #[doc(hidden)]
    pub __source_breaking: fidl::marker::SourceBreaking,
}

impl fidl::Standalone<fidl::encoding::DefaultFuchsiaResourceDialect> for FocusChain {}

#[derive(Clone, Debug, Default, PartialEq)]
pub struct FocusChainProviderWatchFocusKoidChainRequest {
    #[doc(hidden)]
    pub __source_breaking: fidl::marker::SourceBreaking,
}

impl fidl::Persistable for FocusChainProviderWatchFocusKoidChainRequest {}

/// A `FocusKoidChain` serves almost the same purpose as a `FocusChain`, but is
/// intended for applications that merely need to identify views in the chain
/// and do not need to watch their state.
#[derive(Clone, Debug, Default, PartialEq)]
pub struct FocusKoidChain {
    pub focus_chain: Option<Vec<u64>>,
    #[doc(hidden)]
    pub __source_breaking: fidl::marker::SourceBreaking,
}

impl fidl::Persistable for FocusKoidChain {}

#[derive(Debug, Copy, Clone, Eq, PartialEq, Ord, PartialOrd, Hash)]
pub struct FocusChainListenerMarker;

impl fidl::endpoints::ProtocolMarker for FocusChainListenerMarker {
    type Proxy = FocusChainListenerProxy;
    type RequestStream = FocusChainListenerRequestStream;
    #[cfg(target_os = "fuchsia")]
    type SynchronousProxy = FocusChainListenerSynchronousProxy;

    const DEBUG_NAME: &'static str = "(anonymous) FocusChainListener";
}

pub trait FocusChainListenerProxyInterface: Send + Sync {
    type OnFocusChangeResponseFut: std::future::Future<Output = Result<(), fidl::Error>> + Send;
    fn r#on_focus_change(&self, focus_chain: FocusChain) -> Self::OnFocusChangeResponseFut;
}
#[derive(Debug)]
#[cfg(target_os = "fuchsia")]
pub struct FocusChainListenerSynchronousProxy {
    client: fidl::client::sync::Client,
}

#[cfg(target_os = "fuchsia")]
impl fidl::endpoints::SynchronousProxy for FocusChainListenerSynchronousProxy {
    type Proxy = FocusChainListenerProxy;
    type Protocol = FocusChainListenerMarker;

    fn from_channel(inner: fidl::Channel) -> Self {
        Self::new(inner)
    }

    fn into_channel(self) -> fidl::Channel {
        self.client.into_channel()
    }

    fn as_channel(&self) -> &fidl::Channel {
        self.client.as_channel()
    }
}

#[cfg(target_os = "fuchsia")]
impl FocusChainListenerSynchronousProxy {
    pub fn new(channel: fidl::Channel) -> Self {
        let protocol_name =
            <FocusChainListenerMarker as fidl::endpoints::ProtocolMarker>::DEBUG_NAME;
        Self { client: fidl::client::sync::Client::new(channel, protocol_name) }
    }

    pub fn into_channel(self) -> fidl::Channel {
        self.client.into_channel()
    }

    /// 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 wait_for_event(
        &self,
        deadline: zx::MonotonicInstant,
    ) -> Result<FocusChainListenerEvent, fidl::Error> {
        FocusChainListenerEvent::decode(self.client.wait_for_event(deadline)?)
    }

    /// Sent when a focus change occurs.  Since `focus_chain` may contain an
    /// empty update, every handler MUST respond to the message even
    /// if its contents are not immediately useful.
    pub fn r#on_focus_change(
        &self,
        mut focus_chain: FocusChain,
        ___deadline: zx::MonotonicInstant,
    ) -> Result<(), fidl::Error> {
        let _response = self
            .client
            .send_query::<FocusChainListenerOnFocusChangeRequest, fidl::encoding::EmptyPayload>(
                (&mut focus_chain,),
                0x2ffe3dec9ff7a04a,
                fidl::encoding::DynamicFlags::empty(),
                ___deadline,
            )?;
        Ok(_response)
    }
}

#[derive(Debug, Clone)]
pub struct FocusChainListenerProxy {
    client: fidl::client::Client<fidl::encoding::DefaultFuchsiaResourceDialect>,
}

impl fidl::endpoints::Proxy for FocusChainListenerProxy {
    type Protocol = FocusChainListenerMarker;

    fn from_channel(inner: ::fidl::AsyncChannel) -> Self {
        Self::new(inner)
    }

    fn into_channel(self) -> Result<::fidl::AsyncChannel, Self> {
        self.client.into_channel().map_err(|client| Self { client })
    }

    fn as_channel(&self) -> &::fidl::AsyncChannel {
        self.client.as_channel()
    }
}

impl FocusChainListenerProxy {
    /// Create a new Proxy for fuchsia.ui.focus/FocusChainListener.
    pub fn new(channel: ::fidl::AsyncChannel) -> Self {
        let protocol_name =
            <FocusChainListenerMarker as fidl::endpoints::ProtocolMarker>::DEBUG_NAME;
        Self { client: fidl::client::Client::new(channel, protocol_name) }
    }

    /// Get a Stream of events from the remote end of the protocol.
    ///
    /// # Panics
    ///
    /// Panics if the event stream was already taken.
    pub fn take_event_stream(&self) -> FocusChainListenerEventStream {
        FocusChainListenerEventStream { event_receiver: self.client.take_event_receiver() }
    }

    /// Sent when a focus change occurs.  Since `focus_chain` may contain an
    /// empty update, every handler MUST respond to the message even
    /// if its contents are not immediately useful.
    pub fn r#on_focus_change(
        &self,
        mut focus_chain: FocusChain,
    ) -> fidl::client::QueryResponseFut<(), fidl::encoding::DefaultFuchsiaResourceDialect> {
        FocusChainListenerProxyInterface::r#on_focus_change(self, focus_chain)
    }
}

impl FocusChainListenerProxyInterface for FocusChainListenerProxy {
    type OnFocusChangeResponseFut =
        fidl::client::QueryResponseFut<(), fidl::encoding::DefaultFuchsiaResourceDialect>;
    fn r#on_focus_change(&self, mut focus_chain: FocusChain) -> Self::OnFocusChangeResponseFut {
        fn _decode(
            mut _buf: Result<<fidl::encoding::DefaultFuchsiaResourceDialect as fidl::encoding::ResourceDialect>::MessageBufEtc, fidl::Error>,
        ) -> Result<(), fidl::Error> {
            let _response = fidl::client::decode_transaction_body::<
                fidl::encoding::EmptyPayload,
                fidl::encoding::DefaultFuchsiaResourceDialect,
                0x2ffe3dec9ff7a04a,
            >(_buf?)?;
            Ok(_response)
        }
        self.client.send_query_and_decode::<FocusChainListenerOnFocusChangeRequest, ()>(
            (&mut focus_chain,),
            0x2ffe3dec9ff7a04a,
            fidl::encoding::DynamicFlags::empty(),
            _decode,
        )
    }
}

pub struct FocusChainListenerEventStream {
    event_receiver: fidl::client::EventReceiver<fidl::encoding::DefaultFuchsiaResourceDialect>,
}

impl std::marker::Unpin for FocusChainListenerEventStream {}

impl futures::stream::FusedStream for FocusChainListenerEventStream {
    fn is_terminated(&self) -> bool {
        self.event_receiver.is_terminated()
    }
}

impl futures::Stream for FocusChainListenerEventStream {
    type Item = Result<FocusChainListenerEvent, fidl::Error>;

    fn poll_next(
        mut self: std::pin::Pin<&mut Self>,
        cx: &mut std::task::Context<'_>,
    ) -> std::task::Poll<Option<Self::Item>> {
        match futures::ready!(futures::stream::StreamExt::poll_next_unpin(
            &mut self.event_receiver,
            cx
        )?) {
            Some(buf) => std::task::Poll::Ready(Some(FocusChainListenerEvent::decode(buf))),
            None => std::task::Poll::Ready(None),
        }
    }
}

#[derive(Debug)]
pub enum FocusChainListenerEvent {}

impl FocusChainListenerEvent {
    /// Decodes a message buffer as a [`FocusChainListenerEvent`].
    fn decode(
        mut buf: <fidl::encoding::DefaultFuchsiaResourceDialect as fidl::encoding::ResourceDialect>::MessageBufEtc,
    ) -> Result<FocusChainListenerEvent, fidl::Error> {
        let (bytes, _handles) = buf.split_mut();
        let (tx_header, _body_bytes) = fidl::encoding::decode_transaction_header(bytes)?;
        debug_assert_eq!(tx_header.tx_id, 0);
        match tx_header.ordinal {
            _ => Err(fidl::Error::UnknownOrdinal {
                ordinal: tx_header.ordinal,
                protocol_name:
                    <FocusChainListenerMarker as fidl::endpoints::ProtocolMarker>::DEBUG_NAME,
            }),
        }
    }
}

/// A Stream of incoming requests for fuchsia.ui.focus/FocusChainListener.
pub struct FocusChainListenerRequestStream {
    inner: std::sync::Arc<fidl::ServeInner<fidl::encoding::DefaultFuchsiaResourceDialect>>,
    is_terminated: bool,
}

impl std::marker::Unpin for FocusChainListenerRequestStream {}

impl futures::stream::FusedStream for FocusChainListenerRequestStream {
    fn is_terminated(&self) -> bool {
        self.is_terminated
    }
}

impl fidl::endpoints::RequestStream for FocusChainListenerRequestStream {
    type Protocol = FocusChainListenerMarker;
    type ControlHandle = FocusChainListenerControlHandle;

    fn from_channel(channel: ::fidl::AsyncChannel) -> Self {
        Self { inner: std::sync::Arc::new(fidl::ServeInner::new(channel)), is_terminated: false }
    }

    fn control_handle(&self) -> Self::ControlHandle {
        FocusChainListenerControlHandle { inner: self.inner.clone() }
    }

    fn into_inner(
        self,
    ) -> (::std::sync::Arc<fidl::ServeInner<fidl::encoding::DefaultFuchsiaResourceDialect>>, bool)
    {
        (self.inner, self.is_terminated)
    }

    fn from_inner(
        inner: std::sync::Arc<fidl::ServeInner<fidl::encoding::DefaultFuchsiaResourceDialect>>,
        is_terminated: bool,
    ) -> Self {
        Self { inner, is_terminated }
    }
}

impl futures::Stream for FocusChainListenerRequestStream {
    type Item = Result<FocusChainListenerRequest, fidl::Error>;

    fn poll_next(
        mut self: std::pin::Pin<&mut Self>,
        cx: &mut std::task::Context<'_>,
    ) -> std::task::Poll<Option<Self::Item>> {
        let this = &mut *self;
        if this.inner.check_shutdown(cx) {
            this.is_terminated = true;
            return std::task::Poll::Ready(None);
        }
        if this.is_terminated {
            panic!("polled FocusChainListenerRequestStream after completion");
        }
        fidl::encoding::with_tls_decode_buf::<_, fidl::encoding::DefaultFuchsiaResourceDialect>(
            |bytes, handles| {
                match this.inner.channel().read_etc(cx, bytes, handles) {
                    std::task::Poll::Ready(Ok(())) => {}
                    std::task::Poll::Pending => return std::task::Poll::Pending,
                    std::task::Poll::Ready(Err(zx_status::Status::PEER_CLOSED)) => {
                        this.is_terminated = true;
                        return std::task::Poll::Ready(None);
                    }
                    std::task::Poll::Ready(Err(e)) => {
                        return std::task::Poll::Ready(Some(Err(fidl::Error::ServerRequestRead(
                            e.into(),
                        ))))
                    }
                }

                // A message has been received from the channel
                let (header, _body_bytes) = fidl::encoding::decode_transaction_header(bytes)?;

                std::task::Poll::Ready(Some(match header.ordinal {
                0x2ffe3dec9ff7a04a => {
                    header.validate_request_tx_id(fidl::MethodType::TwoWay)?;
                    let mut req = fidl::new_empty!(FocusChainListenerOnFocusChangeRequest, fidl::encoding::DefaultFuchsiaResourceDialect);
                    fidl::encoding::Decoder::<fidl::encoding::DefaultFuchsiaResourceDialect>::decode_into::<FocusChainListenerOnFocusChangeRequest>(&header, _body_bytes, handles, &mut req)?;
                    let control_handle = FocusChainListenerControlHandle {
                        inner: this.inner.clone(),
                    };
                    Ok(FocusChainListenerRequest::OnFocusChange {focus_chain: req.focus_chain,

                        responder: FocusChainListenerOnFocusChangeResponder {
                            control_handle: std::mem::ManuallyDrop::new(control_handle),
                            tx_id: header.tx_id,
                        },
                    })
                }
                _ => Err(fidl::Error::UnknownOrdinal {
                    ordinal: header.ordinal,
                    protocol_name: <FocusChainListenerMarker as fidl::endpoints::ProtocolMarker>::DEBUG_NAME,
                }),
            }))
            },
        )
    }
}

/// A FocusChainListener receives an updated FocusChain when focus changes.
#[derive(Debug)]
pub enum FocusChainListenerRequest {
    /// Sent when a focus change occurs.  Since `focus_chain` may contain an
    /// empty update, every handler MUST respond to the message even
    /// if its contents are not immediately useful.
    OnFocusChange { focus_chain: FocusChain, responder: FocusChainListenerOnFocusChangeResponder },
}

impl FocusChainListenerRequest {
    #[allow(irrefutable_let_patterns)]
    pub fn into_on_focus_change(
        self,
    ) -> Option<(FocusChain, FocusChainListenerOnFocusChangeResponder)> {
        if let FocusChainListenerRequest::OnFocusChange { focus_chain, responder } = self {
            Some((focus_chain, responder))
        } else {
            None
        }
    }

    /// Name of the method defined in FIDL
    pub fn method_name(&self) -> &'static str {
        match *self {
            FocusChainListenerRequest::OnFocusChange { .. } => "on_focus_change",
        }
    }
}

#[derive(Debug, Clone)]
pub struct FocusChainListenerControlHandle {
    inner: std::sync::Arc<fidl::ServeInner<fidl::encoding::DefaultFuchsiaResourceDialect>>,
}

impl fidl::endpoints::ControlHandle for FocusChainListenerControlHandle {
    fn shutdown(&self) {
        self.inner.shutdown()
    }
    fn shutdown_with_epitaph(&self, status: zx_status::Status) {
        self.inner.shutdown_with_epitaph(status)
    }

    fn is_closed(&self) -> bool {
        self.inner.channel().is_closed()
    }
    fn on_closed(&self) -> fidl::OnSignalsRef<'_> {
        self.inner.channel().on_closed()
    }

    #[cfg(target_os = "fuchsia")]
    fn signal_peer(
        &self,
        clear_mask: zx::Signals,
        set_mask: zx::Signals,
    ) -> Result<(), zx_status::Status> {
        use fidl::Peered;
        self.inner.channel().signal_peer(clear_mask, set_mask)
    }
}

impl FocusChainListenerControlHandle {}

#[must_use = "FIDL methods require a response to be sent"]
#[derive(Debug)]
pub struct FocusChainListenerOnFocusChangeResponder {
    control_handle: std::mem::ManuallyDrop<FocusChainListenerControlHandle>,
    tx_id: u32,
}

/// Set the the channel to be shutdown (see [`FocusChainListenerControlHandle::shutdown`])
/// if the responder is dropped without sending a response, so that the client
/// doesn't hang. To prevent this behavior, call `drop_without_shutdown`.
impl std::ops::Drop for FocusChainListenerOnFocusChangeResponder {
    fn drop(&mut self) {
        self.control_handle.shutdown();
        // Safety: drops once, never accessed again
        unsafe { std::mem::ManuallyDrop::drop(&mut self.control_handle) };
    }
}

impl fidl::endpoints::Responder for FocusChainListenerOnFocusChangeResponder {
    type ControlHandle = FocusChainListenerControlHandle;

    fn control_handle(&self) -> &FocusChainListenerControlHandle {
        &self.control_handle
    }

    fn drop_without_shutdown(mut self) {
        // Safety: drops once, never accessed again due to mem::forget
        unsafe { std::mem::ManuallyDrop::drop(&mut self.control_handle) };
        // Prevent Drop from running (which would shut down the channel)
        std::mem::forget(self);
    }
}

impl FocusChainListenerOnFocusChangeResponder {
    /// Sends a response to the FIDL transaction.
    ///
    /// Sets the channel to shutdown if an error occurs.
    pub fn send(self) -> Result<(), fidl::Error> {
        let _result = self.send_raw();
        if _result.is_err() {
            self.control_handle.shutdown();
        }
        self.drop_without_shutdown();
        _result
    }

    /// Similar to "send" but does not shutdown the channel if an error occurs.
    pub fn send_no_shutdown_on_err(self) -> Result<(), fidl::Error> {
        let _result = self.send_raw();
        self.drop_without_shutdown();
        _result
    }

    fn send_raw(&self) -> Result<(), fidl::Error> {
        self.control_handle.inner.send::<fidl::encoding::EmptyPayload>(
            (),
            self.tx_id,
            0x2ffe3dec9ff7a04a,
            fidl::encoding::DynamicFlags::empty(),
        )
    }
}

#[derive(Debug, Copy, Clone, Eq, PartialEq, Ord, PartialOrd, Hash)]
pub struct FocusChainListenerRegistryMarker;

impl fidl::endpoints::ProtocolMarker for FocusChainListenerRegistryMarker {
    type Proxy = FocusChainListenerRegistryProxy;
    type RequestStream = FocusChainListenerRegistryRequestStream;
    #[cfg(target_os = "fuchsia")]
    type SynchronousProxy = FocusChainListenerRegistrySynchronousProxy;

    const DEBUG_NAME: &'static str = "fuchsia.ui.focus.FocusChainListenerRegistry";
}
impl fidl::endpoints::DiscoverableProtocolMarker for FocusChainListenerRegistryMarker {}

pub trait FocusChainListenerRegistryProxyInterface: Send + Sync {
    fn r#register(
        &self,
        listener: fidl::endpoints::ClientEnd<FocusChainListenerMarker>,
    ) -> Result<(), fidl::Error>;
}
#[derive(Debug)]
#[cfg(target_os = "fuchsia")]
pub struct FocusChainListenerRegistrySynchronousProxy {
    client: fidl::client::sync::Client,
}

#[cfg(target_os = "fuchsia")]
impl fidl::endpoints::SynchronousProxy for FocusChainListenerRegistrySynchronousProxy {
    type Proxy = FocusChainListenerRegistryProxy;
    type Protocol = FocusChainListenerRegistryMarker;

    fn from_channel(inner: fidl::Channel) -> Self {
        Self::new(inner)
    }

    fn into_channel(self) -> fidl::Channel {
        self.client.into_channel()
    }

    fn as_channel(&self) -> &fidl::Channel {
        self.client.as_channel()
    }
}

#[cfg(target_os = "fuchsia")]
impl FocusChainListenerRegistrySynchronousProxy {
    pub fn new(channel: fidl::Channel) -> Self {
        let protocol_name =
            <FocusChainListenerRegistryMarker as fidl::endpoints::ProtocolMarker>::DEBUG_NAME;
        Self { client: fidl::client::sync::Client::new(channel, protocol_name) }
    }

    pub fn into_channel(self) -> fidl::Channel {
        self.client.into_channel()
    }

    /// 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 wait_for_event(
        &self,
        deadline: zx::MonotonicInstant,
    ) -> Result<FocusChainListenerRegistryEvent, fidl::Error> {
        FocusChainListenerRegistryEvent::decode(self.client.wait_for_event(deadline)?)
    }

    pub fn r#register(
        &self,
        mut listener: fidl::endpoints::ClientEnd<FocusChainListenerMarker>,
    ) -> Result<(), fidl::Error> {
        self.client.send::<FocusChainListenerRegistryRegisterRequest>(
            (listener,),
            0x177be5ba0da6faa3,
            fidl::encoding::DynamicFlags::empty(),
        )
    }
}

#[derive(Debug, Clone)]
pub struct FocusChainListenerRegistryProxy {
    client: fidl::client::Client<fidl::encoding::DefaultFuchsiaResourceDialect>,
}

impl fidl::endpoints::Proxy for FocusChainListenerRegistryProxy {
    type Protocol = FocusChainListenerRegistryMarker;

    fn from_channel(inner: ::fidl::AsyncChannel) -> Self {
        Self::new(inner)
    }

    fn into_channel(self) -> Result<::fidl::AsyncChannel, Self> {
        self.client.into_channel().map_err(|client| Self { client })
    }

    fn as_channel(&self) -> &::fidl::AsyncChannel {
        self.client.as_channel()
    }
}

impl FocusChainListenerRegistryProxy {
    /// Create a new Proxy for fuchsia.ui.focus/FocusChainListenerRegistry.
    pub fn new(channel: ::fidl::AsyncChannel) -> Self {
        let protocol_name =
            <FocusChainListenerRegistryMarker as fidl::endpoints::ProtocolMarker>::DEBUG_NAME;
        Self { client: fidl::client::Client::new(channel, protocol_name) }
    }

    /// Get a Stream of events from the remote end of the protocol.
    ///
    /// # Panics
    ///
    /// Panics if the event stream was already taken.
    pub fn take_event_stream(&self) -> FocusChainListenerRegistryEventStream {
        FocusChainListenerRegistryEventStream { event_receiver: self.client.take_event_receiver() }
    }

    pub fn r#register(
        &self,
        mut listener: fidl::endpoints::ClientEnd<FocusChainListenerMarker>,
    ) -> Result<(), fidl::Error> {
        FocusChainListenerRegistryProxyInterface::r#register(self, listener)
    }
}

impl FocusChainListenerRegistryProxyInterface for FocusChainListenerRegistryProxy {
    fn r#register(
        &self,
        mut listener: fidl::endpoints::ClientEnd<FocusChainListenerMarker>,
    ) -> Result<(), fidl::Error> {
        self.client.send::<FocusChainListenerRegistryRegisterRequest>(
            (listener,),
            0x177be5ba0da6faa3,
            fidl::encoding::DynamicFlags::empty(),
        )
    }
}

pub struct FocusChainListenerRegistryEventStream {
    event_receiver: fidl::client::EventReceiver<fidl::encoding::DefaultFuchsiaResourceDialect>,
}

impl std::marker::Unpin for FocusChainListenerRegistryEventStream {}

impl futures::stream::FusedStream for FocusChainListenerRegistryEventStream {
    fn is_terminated(&self) -> bool {
        self.event_receiver.is_terminated()
    }
}

impl futures::Stream for FocusChainListenerRegistryEventStream {
    type Item = Result<FocusChainListenerRegistryEvent, fidl::Error>;

    fn poll_next(
        mut self: std::pin::Pin<&mut Self>,
        cx: &mut std::task::Context<'_>,
    ) -> std::task::Poll<Option<Self::Item>> {
        match futures::ready!(futures::stream::StreamExt::poll_next_unpin(
            &mut self.event_receiver,
            cx
        )?) {
            Some(buf) => std::task::Poll::Ready(Some(FocusChainListenerRegistryEvent::decode(buf))),
            None => std::task::Poll::Ready(None),
        }
    }
}

#[derive(Debug)]
pub enum FocusChainListenerRegistryEvent {}

impl FocusChainListenerRegistryEvent {
    /// Decodes a message buffer as a [`FocusChainListenerRegistryEvent`].
    fn decode(
        mut buf: <fidl::encoding::DefaultFuchsiaResourceDialect as fidl::encoding::ResourceDialect>::MessageBufEtc,
    ) -> Result<FocusChainListenerRegistryEvent, fidl::Error> {
        let (bytes, _handles) = buf.split_mut();
        let (tx_header, _body_bytes) = fidl::encoding::decode_transaction_header(bytes)?;
        debug_assert_eq!(tx_header.tx_id, 0);
        match tx_header.ordinal {
            _ => Err(fidl::Error::UnknownOrdinal {
                ordinal: tx_header.ordinal,
                protocol_name: <FocusChainListenerRegistryMarker as fidl::endpoints::ProtocolMarker>::DEBUG_NAME,
            })
        }
    }
}

/// A Stream of incoming requests for fuchsia.ui.focus/FocusChainListenerRegistry.
pub struct FocusChainListenerRegistryRequestStream {
    inner: std::sync::Arc<fidl::ServeInner<fidl::encoding::DefaultFuchsiaResourceDialect>>,
    is_terminated: bool,
}

impl std::marker::Unpin for FocusChainListenerRegistryRequestStream {}

impl futures::stream::FusedStream for FocusChainListenerRegistryRequestStream {
    fn is_terminated(&self) -> bool {
        self.is_terminated
    }
}

impl fidl::endpoints::RequestStream for FocusChainListenerRegistryRequestStream {
    type Protocol = FocusChainListenerRegistryMarker;
    type ControlHandle = FocusChainListenerRegistryControlHandle;

    fn from_channel(channel: ::fidl::AsyncChannel) -> Self {
        Self { inner: std::sync::Arc::new(fidl::ServeInner::new(channel)), is_terminated: false }
    }

    fn control_handle(&self) -> Self::ControlHandle {
        FocusChainListenerRegistryControlHandle { inner: self.inner.clone() }
    }

    fn into_inner(
        self,
    ) -> (::std::sync::Arc<fidl::ServeInner<fidl::encoding::DefaultFuchsiaResourceDialect>>, bool)
    {
        (self.inner, self.is_terminated)
    }

    fn from_inner(
        inner: std::sync::Arc<fidl::ServeInner<fidl::encoding::DefaultFuchsiaResourceDialect>>,
        is_terminated: bool,
    ) -> Self {
        Self { inner, is_terminated }
    }
}

impl futures::Stream for FocusChainListenerRegistryRequestStream {
    type Item = Result<FocusChainListenerRegistryRequest, fidl::Error>;

    fn poll_next(
        mut self: std::pin::Pin<&mut Self>,
        cx: &mut std::task::Context<'_>,
    ) -> std::task::Poll<Option<Self::Item>> {
        let this = &mut *self;
        if this.inner.check_shutdown(cx) {
            this.is_terminated = true;
            return std::task::Poll::Ready(None);
        }
        if this.is_terminated {
            panic!("polled FocusChainListenerRegistryRequestStream after completion");
        }
        fidl::encoding::with_tls_decode_buf::<_, fidl::encoding::DefaultFuchsiaResourceDialect>(
            |bytes, handles| {
                match this.inner.channel().read_etc(cx, bytes, handles) {
                    std::task::Poll::Ready(Ok(())) => {}
                    std::task::Poll::Pending => return std::task::Poll::Pending,
                    std::task::Poll::Ready(Err(zx_status::Status::PEER_CLOSED)) => {
                        this.is_terminated = true;
                        return std::task::Poll::Ready(None);
                    }
                    std::task::Poll::Ready(Err(e)) => {
                        return std::task::Poll::Ready(Some(Err(fidl::Error::ServerRequestRead(
                            e.into(),
                        ))))
                    }
                }

                // A message has been received from the channel
                let (header, _body_bytes) = fidl::encoding::decode_transaction_header(bytes)?;

                std::task::Poll::Ready(Some(match header.ordinal {
                0x177be5ba0da6faa3 => {
                    header.validate_request_tx_id(fidl::MethodType::OneWay)?;
                    let mut req = fidl::new_empty!(FocusChainListenerRegistryRegisterRequest, fidl::encoding::DefaultFuchsiaResourceDialect);
                    fidl::encoding::Decoder::<fidl::encoding::DefaultFuchsiaResourceDialect>::decode_into::<FocusChainListenerRegistryRegisterRequest>(&header, _body_bytes, handles, &mut req)?;
                    let control_handle = FocusChainListenerRegistryControlHandle {
                        inner: this.inner.clone(),
                    };
                    Ok(FocusChainListenerRegistryRequest::Register {listener: req.listener,

                        control_handle,
                    })
                }
                _ => Err(fidl::Error::UnknownOrdinal {
                    ordinal: header.ordinal,
                    protocol_name: <FocusChainListenerRegistryMarker as fidl::endpoints::ProtocolMarker>::DEBUG_NAME,
                }),
            }))
            },
        )
    }
}

/// A FocusChainListenerRegistry allows listening to FocusChain updates.
#[derive(Debug)]
pub enum FocusChainListenerRegistryRequest {
    Register {
        listener: fidl::endpoints::ClientEnd<FocusChainListenerMarker>,
        control_handle: FocusChainListenerRegistryControlHandle,
    },
}

impl FocusChainListenerRegistryRequest {
    #[allow(irrefutable_let_patterns)]
    pub fn into_register(
        self,
    ) -> Option<(
        fidl::endpoints::ClientEnd<FocusChainListenerMarker>,
        FocusChainListenerRegistryControlHandle,
    )> {
        if let FocusChainListenerRegistryRequest::Register { listener, control_handle } = self {
            Some((listener, control_handle))
        } else {
            None
        }
    }

    /// Name of the method defined in FIDL
    pub fn method_name(&self) -> &'static str {
        match *self {
            FocusChainListenerRegistryRequest::Register { .. } => "register",
        }
    }
}

#[derive(Debug, Clone)]
pub struct FocusChainListenerRegistryControlHandle {
    inner: std::sync::Arc<fidl::ServeInner<fidl::encoding::DefaultFuchsiaResourceDialect>>,
}

impl fidl::endpoints::ControlHandle for FocusChainListenerRegistryControlHandle {
    fn shutdown(&self) {
        self.inner.shutdown()
    }
    fn shutdown_with_epitaph(&self, status: zx_status::Status) {
        self.inner.shutdown_with_epitaph(status)
    }

    fn is_closed(&self) -> bool {
        self.inner.channel().is_closed()
    }
    fn on_closed(&self) -> fidl::OnSignalsRef<'_> {
        self.inner.channel().on_closed()
    }

    #[cfg(target_os = "fuchsia")]
    fn signal_peer(
        &self,
        clear_mask: zx::Signals,
        set_mask: zx::Signals,
    ) -> Result<(), zx_status::Status> {
        use fidl::Peered;
        self.inner.channel().signal_peer(clear_mask, set_mask)
    }
}

impl FocusChainListenerRegistryControlHandle {}

#[derive(Debug, Copy, Clone, Eq, PartialEq, Ord, PartialOrd, Hash)]
pub struct FocusChainProviderMarker;

impl fidl::endpoints::ProtocolMarker for FocusChainProviderMarker {
    type Proxy = FocusChainProviderProxy;
    type RequestStream = FocusChainProviderRequestStream;
    #[cfg(target_os = "fuchsia")]
    type SynchronousProxy = FocusChainProviderSynchronousProxy;

    const DEBUG_NAME: &'static str = "fuchsia.ui.focus.FocusChainProvider";
}
impl fidl::endpoints::DiscoverableProtocolMarker for FocusChainProviderMarker {}

pub trait FocusChainProviderProxyInterface: Send + Sync {
    type WatchFocusKoidChainResponseFut: std::future::Future<Output = Result<FocusKoidChain, fidl::Error>>
        + Send;
    fn r#watch_focus_koid_chain(
        &self,
        payload: &FocusChainProviderWatchFocusKoidChainRequest,
    ) -> Self::WatchFocusKoidChainResponseFut;
}
#[derive(Debug)]
#[cfg(target_os = "fuchsia")]
pub struct FocusChainProviderSynchronousProxy {
    client: fidl::client::sync::Client,
}

#[cfg(target_os = "fuchsia")]
impl fidl::endpoints::SynchronousProxy for FocusChainProviderSynchronousProxy {
    type Proxy = FocusChainProviderProxy;
    type Protocol = FocusChainProviderMarker;

    fn from_channel(inner: fidl::Channel) -> Self {
        Self::new(inner)
    }

    fn into_channel(self) -> fidl::Channel {
        self.client.into_channel()
    }

    fn as_channel(&self) -> &fidl::Channel {
        self.client.as_channel()
    }
}

#[cfg(target_os = "fuchsia")]
impl FocusChainProviderSynchronousProxy {
    pub fn new(channel: fidl::Channel) -> Self {
        let protocol_name =
            <FocusChainProviderMarker as fidl::endpoints::ProtocolMarker>::DEBUG_NAME;
        Self { client: fidl::client::sync::Client::new(channel, protocol_name) }
    }

    pub fn into_channel(self) -> fidl::Channel {
        self.client.into_channel()
    }

    /// 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 wait_for_event(
        &self,
        deadline: zx::MonotonicInstant,
    ) -> Result<FocusChainProviderEvent, fidl::Error> {
        FocusChainProviderEvent::decode(self.client.wait_for_event(deadline)?)
    }

    /// Subscribe to changes in the focus chain (koids only) with a hanging-get
    /// pattern.
    ///
    /// The server responds immediately with the initial state, and afterwards
    /// whenever a change occurs. Updates are not queued up for slow clients;
    /// only the latest state is sent.
    ///
    /// It is invalid to call this method while a previous call is pending.
    /// Doing so will cause the server end of the protocol to be closed.
    pub fn r#watch_focus_koid_chain(
        &self,
        mut payload: &FocusChainProviderWatchFocusKoidChainRequest,
        ___deadline: zx::MonotonicInstant,
    ) -> Result<FocusKoidChain, fidl::Error> {
        let _response = self
            .client
            .send_query::<FocusChainProviderWatchFocusKoidChainRequest, FocusKoidChain>(
                payload,
                0x726d2fdae53c1ab7,
                fidl::encoding::DynamicFlags::empty(),
                ___deadline,
            )?;
        Ok(_response)
    }
}

#[derive(Debug, Clone)]
pub struct FocusChainProviderProxy {
    client: fidl::client::Client<fidl::encoding::DefaultFuchsiaResourceDialect>,
}

impl fidl::endpoints::Proxy for FocusChainProviderProxy {
    type Protocol = FocusChainProviderMarker;

    fn from_channel(inner: ::fidl::AsyncChannel) -> Self {
        Self::new(inner)
    }

    fn into_channel(self) -> Result<::fidl::AsyncChannel, Self> {
        self.client.into_channel().map_err(|client| Self { client })
    }

    fn as_channel(&self) -> &::fidl::AsyncChannel {
        self.client.as_channel()
    }
}

impl FocusChainProviderProxy {
    /// Create a new Proxy for fuchsia.ui.focus/FocusChainProvider.
    pub fn new(channel: ::fidl::AsyncChannel) -> Self {
        let protocol_name =
            <FocusChainProviderMarker as fidl::endpoints::ProtocolMarker>::DEBUG_NAME;
        Self { client: fidl::client::Client::new(channel, protocol_name) }
    }

    /// Get a Stream of events from the remote end of the protocol.
    ///
    /// # Panics
    ///
    /// Panics if the event stream was already taken.
    pub fn take_event_stream(&self) -> FocusChainProviderEventStream {
        FocusChainProviderEventStream { event_receiver: self.client.take_event_receiver() }
    }

    /// Subscribe to changes in the focus chain (koids only) with a hanging-get
    /// pattern.
    ///
    /// The server responds immediately with the initial state, and afterwards
    /// whenever a change occurs. Updates are not queued up for slow clients;
    /// only the latest state is sent.
    ///
    /// It is invalid to call this method while a previous call is pending.
    /// Doing so will cause the server end of the protocol to be closed.
    pub fn r#watch_focus_koid_chain(
        &self,
        mut payload: &FocusChainProviderWatchFocusKoidChainRequest,
    ) -> fidl::client::QueryResponseFut<FocusKoidChain, fidl::encoding::DefaultFuchsiaResourceDialect>
    {
        FocusChainProviderProxyInterface::r#watch_focus_koid_chain(self, payload)
    }
}

impl FocusChainProviderProxyInterface for FocusChainProviderProxy {
    type WatchFocusKoidChainResponseFut = fidl::client::QueryResponseFut<
        FocusKoidChain,
        fidl::encoding::DefaultFuchsiaResourceDialect,
    >;
    fn r#watch_focus_koid_chain(
        &self,
        mut payload: &FocusChainProviderWatchFocusKoidChainRequest,
    ) -> Self::WatchFocusKoidChainResponseFut {
        fn _decode(
            mut _buf: Result<<fidl::encoding::DefaultFuchsiaResourceDialect as fidl::encoding::ResourceDialect>::MessageBufEtc, fidl::Error>,
        ) -> Result<FocusKoidChain, fidl::Error> {
            let _response = fidl::client::decode_transaction_body::<
                FocusKoidChain,
                fidl::encoding::DefaultFuchsiaResourceDialect,
                0x726d2fdae53c1ab7,
            >(_buf?)?;
            Ok(_response)
        }
        self.client
            .send_query_and_decode::<FocusChainProviderWatchFocusKoidChainRequest, FocusKoidChain>(
                payload,
                0x726d2fdae53c1ab7,
                fidl::encoding::DynamicFlags::empty(),
                _decode,
            )
    }
}

pub struct FocusChainProviderEventStream {
    event_receiver: fidl::client::EventReceiver<fidl::encoding::DefaultFuchsiaResourceDialect>,
}

impl std::marker::Unpin for FocusChainProviderEventStream {}

impl futures::stream::FusedStream for FocusChainProviderEventStream {
    fn is_terminated(&self) -> bool {
        self.event_receiver.is_terminated()
    }
}

impl futures::Stream for FocusChainProviderEventStream {
    type Item = Result<FocusChainProviderEvent, fidl::Error>;

    fn poll_next(
        mut self: std::pin::Pin<&mut Self>,
        cx: &mut std::task::Context<'_>,
    ) -> std::task::Poll<Option<Self::Item>> {
        match futures::ready!(futures::stream::StreamExt::poll_next_unpin(
            &mut self.event_receiver,
            cx
        )?) {
            Some(buf) => std::task::Poll::Ready(Some(FocusChainProviderEvent::decode(buf))),
            None => std::task::Poll::Ready(None),
        }
    }
}

#[derive(Debug)]
pub enum FocusChainProviderEvent {}

impl FocusChainProviderEvent {
    /// Decodes a message buffer as a [`FocusChainProviderEvent`].
    fn decode(
        mut buf: <fidl::encoding::DefaultFuchsiaResourceDialect as fidl::encoding::ResourceDialect>::MessageBufEtc,
    ) -> Result<FocusChainProviderEvent, fidl::Error> {
        let (bytes, _handles) = buf.split_mut();
        let (tx_header, _body_bytes) = fidl::encoding::decode_transaction_header(bytes)?;
        debug_assert_eq!(tx_header.tx_id, 0);
        match tx_header.ordinal {
            _ => Err(fidl::Error::UnknownOrdinal {
                ordinal: tx_header.ordinal,
                protocol_name:
                    <FocusChainProviderMarker as fidl::endpoints::ProtocolMarker>::DEBUG_NAME,
            }),
        }
    }
}

/// A Stream of incoming requests for fuchsia.ui.focus/FocusChainProvider.
pub struct FocusChainProviderRequestStream {
    inner: std::sync::Arc<fidl::ServeInner<fidl::encoding::DefaultFuchsiaResourceDialect>>,
    is_terminated: bool,
}

impl std::marker::Unpin for FocusChainProviderRequestStream {}

impl futures::stream::FusedStream for FocusChainProviderRequestStream {
    fn is_terminated(&self) -> bool {
        self.is_terminated
    }
}

impl fidl::endpoints::RequestStream for FocusChainProviderRequestStream {
    type Protocol = FocusChainProviderMarker;
    type ControlHandle = FocusChainProviderControlHandle;

    fn from_channel(channel: ::fidl::AsyncChannel) -> Self {
        Self { inner: std::sync::Arc::new(fidl::ServeInner::new(channel)), is_terminated: false }
    }

    fn control_handle(&self) -> Self::ControlHandle {
        FocusChainProviderControlHandle { inner: self.inner.clone() }
    }

    fn into_inner(
        self,
    ) -> (::std::sync::Arc<fidl::ServeInner<fidl::encoding::DefaultFuchsiaResourceDialect>>, bool)
    {
        (self.inner, self.is_terminated)
    }

    fn from_inner(
        inner: std::sync::Arc<fidl::ServeInner<fidl::encoding::DefaultFuchsiaResourceDialect>>,
        is_terminated: bool,
    ) -> Self {
        Self { inner, is_terminated }
    }
}

impl futures::Stream for FocusChainProviderRequestStream {
    type Item = Result<FocusChainProviderRequest, fidl::Error>;

    fn poll_next(
        mut self: std::pin::Pin<&mut Self>,
        cx: &mut std::task::Context<'_>,
    ) -> std::task::Poll<Option<Self::Item>> {
        let this = &mut *self;
        if this.inner.check_shutdown(cx) {
            this.is_terminated = true;
            return std::task::Poll::Ready(None);
        }
        if this.is_terminated {
            panic!("polled FocusChainProviderRequestStream after completion");
        }
        fidl::encoding::with_tls_decode_buf::<_, fidl::encoding::DefaultFuchsiaResourceDialect>(
            |bytes, handles| {
                match this.inner.channel().read_etc(cx, bytes, handles) {
                    std::task::Poll::Ready(Ok(())) => {}
                    std::task::Poll::Pending => return std::task::Poll::Pending,
                    std::task::Poll::Ready(Err(zx_status::Status::PEER_CLOSED)) => {
                        this.is_terminated = true;
                        return std::task::Poll::Ready(None);
                    }
                    std::task::Poll::Ready(Err(e)) => {
                        return std::task::Poll::Ready(Some(Err(fidl::Error::ServerRequestRead(
                            e.into(),
                        ))))
                    }
                }

                // A message has been received from the channel
                let (header, _body_bytes) = fidl::encoding::decode_transaction_header(bytes)?;

                std::task::Poll::Ready(Some(match header.ordinal {
                0x726d2fdae53c1ab7 => {
                    header.validate_request_tx_id(fidl::MethodType::TwoWay)?;
                    let mut req = fidl::new_empty!(FocusChainProviderWatchFocusKoidChainRequest, fidl::encoding::DefaultFuchsiaResourceDialect);
                    fidl::encoding::Decoder::<fidl::encoding::DefaultFuchsiaResourceDialect>::decode_into::<FocusChainProviderWatchFocusKoidChainRequest>(&header, _body_bytes, handles, &mut req)?;
                    let control_handle = FocusChainProviderControlHandle {
                        inner: this.inner.clone(),
                    };
                    Ok(FocusChainProviderRequest::WatchFocusKoidChain {payload: req,
                        responder: FocusChainProviderWatchFocusKoidChainResponder {
                            control_handle: std::mem::ManuallyDrop::new(control_handle),
                            tx_id: header.tx_id,
                        },
                    })
                }
                _ => Err(fidl::Error::UnknownOrdinal {
                    ordinal: header.ordinal,
                    protocol_name: <FocusChainProviderMarker as fidl::endpoints::ProtocolMarker>::DEBUG_NAME,
                }),
            }))
            },
        )
    }
}

/// The `FocusChainProvider` protocol allows privileged clients to watch for
/// focus chain updates.
///
/// It is intended as an experimental solution for providing focus information
/// to the clipboard.
#[derive(Debug)]
pub enum FocusChainProviderRequest {
    /// Subscribe to changes in the focus chain (koids only) with a hanging-get
    /// pattern.
    ///
    /// The server responds immediately with the initial state, and afterwards
    /// whenever a change occurs. Updates are not queued up for slow clients;
    /// only the latest state is sent.
    ///
    /// It is invalid to call this method while a previous call is pending.
    /// Doing so will cause the server end of the protocol to be closed.
    WatchFocusKoidChain {
        payload: FocusChainProviderWatchFocusKoidChainRequest,
        responder: FocusChainProviderWatchFocusKoidChainResponder,
    },
}

impl FocusChainProviderRequest {
    #[allow(irrefutable_let_patterns)]
    pub fn into_watch_focus_koid_chain(
        self,
    ) -> Option<(
        FocusChainProviderWatchFocusKoidChainRequest,
        FocusChainProviderWatchFocusKoidChainResponder,
    )> {
        if let FocusChainProviderRequest::WatchFocusKoidChain { payload, responder } = self {
            Some((payload, responder))
        } else {
            None
        }
    }

    /// Name of the method defined in FIDL
    pub fn method_name(&self) -> &'static str {
        match *self {
            FocusChainProviderRequest::WatchFocusKoidChain { .. } => "watch_focus_koid_chain",
        }
    }
}

#[derive(Debug, Clone)]
pub struct FocusChainProviderControlHandle {
    inner: std::sync::Arc<fidl::ServeInner<fidl::encoding::DefaultFuchsiaResourceDialect>>,
}

impl fidl::endpoints::ControlHandle for FocusChainProviderControlHandle {
    fn shutdown(&self) {
        self.inner.shutdown()
    }
    fn shutdown_with_epitaph(&self, status: zx_status::Status) {
        self.inner.shutdown_with_epitaph(status)
    }

    fn is_closed(&self) -> bool {
        self.inner.channel().is_closed()
    }
    fn on_closed(&self) -> fidl::OnSignalsRef<'_> {
        self.inner.channel().on_closed()
    }

    #[cfg(target_os = "fuchsia")]
    fn signal_peer(
        &self,
        clear_mask: zx::Signals,
        set_mask: zx::Signals,
    ) -> Result<(), zx_status::Status> {
        use fidl::Peered;
        self.inner.channel().signal_peer(clear_mask, set_mask)
    }
}

impl FocusChainProviderControlHandle {}

#[must_use = "FIDL methods require a response to be sent"]
#[derive(Debug)]
pub struct FocusChainProviderWatchFocusKoidChainResponder {
    control_handle: std::mem::ManuallyDrop<FocusChainProviderControlHandle>,
    tx_id: u32,
}

/// Set the the channel to be shutdown (see [`FocusChainProviderControlHandle::shutdown`])
/// if the responder is dropped without sending a response, so that the client
/// doesn't hang. To prevent this behavior, call `drop_without_shutdown`.
impl std::ops::Drop for FocusChainProviderWatchFocusKoidChainResponder {
    fn drop(&mut self) {
        self.control_handle.shutdown();
        // Safety: drops once, never accessed again
        unsafe { std::mem::ManuallyDrop::drop(&mut self.control_handle) };
    }
}

impl fidl::endpoints::Responder for FocusChainProviderWatchFocusKoidChainResponder {
    type ControlHandle = FocusChainProviderControlHandle;

    fn control_handle(&self) -> &FocusChainProviderControlHandle {
        &self.control_handle
    }

    fn drop_without_shutdown(mut self) {
        // Safety: drops once, never accessed again due to mem::forget
        unsafe { std::mem::ManuallyDrop::drop(&mut self.control_handle) };
        // Prevent Drop from running (which would shut down the channel)
        std::mem::forget(self);
    }
}

impl FocusChainProviderWatchFocusKoidChainResponder {
    /// Sends a response to the FIDL transaction.
    ///
    /// Sets the channel to shutdown if an error occurs.
    pub fn send(self, mut payload: &FocusKoidChain) -> Result<(), fidl::Error> {
        let _result = self.send_raw(payload);
        if _result.is_err() {
            self.control_handle.shutdown();
        }
        self.drop_without_shutdown();
        _result
    }

    /// Similar to "send" but does not shutdown the channel if an error occurs.
    pub fn send_no_shutdown_on_err(self, mut payload: &FocusKoidChain) -> Result<(), fidl::Error> {
        let _result = self.send_raw(payload);
        self.drop_without_shutdown();
        _result
    }

    fn send_raw(&self, mut payload: &FocusKoidChain) -> Result<(), fidl::Error> {
        self.control_handle.inner.send::<FocusKoidChain>(
            payload,
            self.tx_id,
            0x726d2fdae53c1ab7,
            fidl::encoding::DynamicFlags::empty(),
        )
    }
}

mod internal {
    use super::*;

    impl fidl::encoding::ResourceTypeMarker for FocusChainListenerOnFocusChangeRequest {
        type Borrowed<'a> = &'a mut Self;
        fn take_or_borrow<'a>(
            value: &'a mut <Self as fidl::encoding::TypeMarker>::Owned,
        ) -> Self::Borrowed<'a> {
            value
        }
    }

    unsafe impl fidl::encoding::TypeMarker for FocusChainListenerOnFocusChangeRequest {
        type Owned = Self;

        #[inline(always)]
        fn inline_align(_context: fidl::encoding::Context) -> usize {
            8
        }

        #[inline(always)]
        fn inline_size(_context: fidl::encoding::Context) -> usize {
            16
        }
    }

    unsafe impl
        fidl::encoding::Encode<
            FocusChainListenerOnFocusChangeRequest,
            fidl::encoding::DefaultFuchsiaResourceDialect,
        > for &mut FocusChainListenerOnFocusChangeRequest
    {
        #[inline]
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<
                '_,
                fidl::encoding::DefaultFuchsiaResourceDialect,
            >,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<FocusChainListenerOnFocusChangeRequest>(offset);
            // Delegate to tuple encoding.
            fidl::encoding::Encode::<
                FocusChainListenerOnFocusChangeRequest,
                fidl::encoding::DefaultFuchsiaResourceDialect,
            >::encode(
                (<FocusChain as fidl::encoding::ResourceTypeMarker>::take_or_borrow(
                    &mut self.focus_chain,
                ),),
                encoder,
                offset,
                _depth,
            )
        }
    }
    unsafe impl<T0: fidl::encoding::Encode<FocusChain, fidl::encoding::DefaultFuchsiaResourceDialect>>
        fidl::encoding::Encode<
            FocusChainListenerOnFocusChangeRequest,
            fidl::encoding::DefaultFuchsiaResourceDialect,
        > for (T0,)
    {
        #[inline]
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<
                '_,
                fidl::encoding::DefaultFuchsiaResourceDialect,
            >,
            offset: usize,
            depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<FocusChainListenerOnFocusChangeRequest>(offset);
            // Zero out padding regions. There's no need to apply masks
            // because the unmasked parts will be overwritten by fields.
            // Write the fields.
            self.0.encode(encoder, offset + 0, depth)?;
            Ok(())
        }
    }

    impl fidl::encoding::Decode<Self, fidl::encoding::DefaultFuchsiaResourceDialect>
        for FocusChainListenerOnFocusChangeRequest
    {
        #[inline(always)]
        fn new_empty() -> Self {
            Self {
                focus_chain: fidl::new_empty!(
                    FocusChain,
                    fidl::encoding::DefaultFuchsiaResourceDialect
                ),
            }
        }

        #[inline]
        unsafe fn decode(
            &mut self,
            decoder: &mut fidl::encoding::Decoder<
                '_,
                fidl::encoding::DefaultFuchsiaResourceDialect,
            >,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            decoder.debug_check_bounds::<Self>(offset);
            // Verify that padding bytes are zero.
            fidl::decode!(
                FocusChain,
                fidl::encoding::DefaultFuchsiaResourceDialect,
                &mut self.focus_chain,
                decoder,
                offset + 0,
                _depth
            )?;
            Ok(())
        }
    }

    impl fidl::encoding::ResourceTypeMarker for FocusChainListenerRegistryRegisterRequest {
        type Borrowed<'a> = &'a mut Self;
        fn take_or_borrow<'a>(
            value: &'a mut <Self as fidl::encoding::TypeMarker>::Owned,
        ) -> Self::Borrowed<'a> {
            value
        }
    }

    unsafe impl fidl::encoding::TypeMarker for FocusChainListenerRegistryRegisterRequest {
        type Owned = Self;

        #[inline(always)]
        fn inline_align(_context: fidl::encoding::Context) -> usize {
            4
        }

        #[inline(always)]
        fn inline_size(_context: fidl::encoding::Context) -> usize {
            4
        }
    }

    unsafe impl
        fidl::encoding::Encode<
            FocusChainListenerRegistryRegisterRequest,
            fidl::encoding::DefaultFuchsiaResourceDialect,
        > for &mut FocusChainListenerRegistryRegisterRequest
    {
        #[inline]
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<
                '_,
                fidl::encoding::DefaultFuchsiaResourceDialect,
            >,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<FocusChainListenerRegistryRegisterRequest>(offset);
            // Delegate to tuple encoding.
            fidl::encoding::Encode::<FocusChainListenerRegistryRegisterRequest, fidl::encoding::DefaultFuchsiaResourceDialect>::encode(
                (
                    <fidl::encoding::Endpoint<fidl::endpoints::ClientEnd<FocusChainListenerMarker>> as fidl::encoding::ResourceTypeMarker>::take_or_borrow(&mut self.listener),
                ),
                encoder, offset, _depth
            )
        }
    }
    unsafe impl<
            T0: fidl::encoding::Encode<
                fidl::encoding::Endpoint<fidl::endpoints::ClientEnd<FocusChainListenerMarker>>,
                fidl::encoding::DefaultFuchsiaResourceDialect,
            >,
        >
        fidl::encoding::Encode<
            FocusChainListenerRegistryRegisterRequest,
            fidl::encoding::DefaultFuchsiaResourceDialect,
        > for (T0,)
    {
        #[inline]
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<
                '_,
                fidl::encoding::DefaultFuchsiaResourceDialect,
            >,
            offset: usize,
            depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<FocusChainListenerRegistryRegisterRequest>(offset);
            // Zero out padding regions. There's no need to apply masks
            // because the unmasked parts will be overwritten by fields.
            // Write the fields.
            self.0.encode(encoder, offset + 0, depth)?;
            Ok(())
        }
    }

    impl fidl::encoding::Decode<Self, fidl::encoding::DefaultFuchsiaResourceDialect>
        for FocusChainListenerRegistryRegisterRequest
    {
        #[inline(always)]
        fn new_empty() -> Self {
            Self {
                listener: fidl::new_empty!(
                    fidl::encoding::Endpoint<fidl::endpoints::ClientEnd<FocusChainListenerMarker>>,
                    fidl::encoding::DefaultFuchsiaResourceDialect
                ),
            }
        }

        #[inline]
        unsafe fn decode(
            &mut self,
            decoder: &mut fidl::encoding::Decoder<
                '_,
                fidl::encoding::DefaultFuchsiaResourceDialect,
            >,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            decoder.debug_check_bounds::<Self>(offset);
            // Verify that padding bytes are zero.
            fidl::decode!(
                fidl::encoding::Endpoint<fidl::endpoints::ClientEnd<FocusChainListenerMarker>>,
                fidl::encoding::DefaultFuchsiaResourceDialect,
                &mut self.listener,
                decoder,
                offset + 0,
                _depth
            )?;
            Ok(())
        }
    }

    impl FocusChain {
        #[inline(always)]
        fn max_ordinal_present(&self) -> u64 {
            if let Some(_) = self.focus_chain {
                return 1;
            }
            0
        }
    }

    impl fidl::encoding::ResourceTypeMarker for FocusChain {
        type Borrowed<'a> = &'a mut Self;
        fn take_or_borrow<'a>(
            value: &'a mut <Self as fidl::encoding::TypeMarker>::Owned,
        ) -> Self::Borrowed<'a> {
            value
        }
    }

    unsafe impl fidl::encoding::TypeMarker for FocusChain {
        type Owned = Self;

        #[inline(always)]
        fn inline_align(_context: fidl::encoding::Context) -> usize {
            8
        }

        #[inline(always)]
        fn inline_size(_context: fidl::encoding::Context) -> usize {
            16
        }
    }

    unsafe impl fidl::encoding::Encode<FocusChain, fidl::encoding::DefaultFuchsiaResourceDialect>
        for &mut FocusChain
    {
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<
                '_,
                fidl::encoding::DefaultFuchsiaResourceDialect,
            >,
            offset: usize,
            mut depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<FocusChain>(offset);
            // Vector header
            let max_ordinal: u64 = self.max_ordinal_present();
            encoder.write_num(max_ordinal, offset);
            encoder.write_num(fidl::encoding::ALLOC_PRESENT_U64, offset + 8);
            // Calling encoder.out_of_line_offset(0) is not allowed.
            if max_ordinal == 0 {
                return Ok(());
            }
            depth.increment()?;
            let envelope_size = 8;
            let bytes_len = max_ordinal as usize * envelope_size;
            #[allow(unused_variables)]
            let offset = encoder.out_of_line_offset(bytes_len);
            let mut _prev_end_offset: usize = 0;
            if 1 > max_ordinal {
                return Ok(());
            }

            // Write at offset+(ordinal-1)*envelope_size, since ordinals are one-based and envelopes
            // are envelope_size bytes.
            let cur_offset: usize = (1 - 1) * envelope_size;

            // Zero reserved fields.
            encoder.padding(offset + _prev_end_offset, cur_offset - _prev_end_offset);

            // Safety:
            // - bytes_len is calculated to fit envelope_size*max(member.ordinal).
            // - Since cur_offset is envelope_size*(member.ordinal - 1) and the envelope takes
            //   envelope_size bytes, there is always sufficient room.
            fidl::encoding::encode_in_envelope_optional::<fidl::encoding::UnboundedVector<fidl_fuchsia_ui_views::ViewRef>, fidl::encoding::DefaultFuchsiaResourceDialect>(
            self.focus_chain.as_mut().map(<fidl::encoding::UnboundedVector<fidl_fuchsia_ui_views::ViewRef> as fidl::encoding::ResourceTypeMarker>::take_or_borrow),
            encoder, offset + cur_offset, depth
        )?;

            _prev_end_offset = cur_offset + envelope_size;

            Ok(())
        }
    }

    impl fidl::encoding::Decode<Self, fidl::encoding::DefaultFuchsiaResourceDialect> for FocusChain {
        #[inline(always)]
        fn new_empty() -> Self {
            Self::default()
        }

        unsafe fn decode(
            &mut self,
            decoder: &mut fidl::encoding::Decoder<
                '_,
                fidl::encoding::DefaultFuchsiaResourceDialect,
            >,
            offset: usize,
            mut depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            decoder.debug_check_bounds::<Self>(offset);
            let len = match fidl::encoding::decode_vector_header(decoder, offset)? {
                None => return Err(fidl::Error::NotNullable),
                Some(len) => len,
            };
            // Calling decoder.out_of_line_offset(0) is not allowed.
            if len == 0 {
                return Ok(());
            };
            depth.increment()?;
            let envelope_size = 8;
            let bytes_len = len * envelope_size;
            let offset = decoder.out_of_line_offset(bytes_len)?;
            // Decode the envelope for each type.
            let mut _next_ordinal_to_read = 0;
            let mut next_offset = offset;
            let end_offset = offset + bytes_len;
            _next_ordinal_to_read += 1;
            if next_offset >= end_offset {
                return Ok(());
            }

            // Decode unknown envelopes for gaps in ordinals.
            while _next_ordinal_to_read < 1 {
                fidl::encoding::decode_unknown_envelope(decoder, next_offset, depth)?;
                _next_ordinal_to_read += 1;
                next_offset += envelope_size;
            }

            let next_out_of_line = decoder.next_out_of_line();
            let handles_before = decoder.remaining_handles();
            if let Some((inlined, num_bytes, num_handles)) =
                fidl::encoding::decode_envelope_header(decoder, next_offset)?
            {
                let member_inline_size = <fidl::encoding::UnboundedVector<
                    fidl_fuchsia_ui_views::ViewRef,
                > as fidl::encoding::TypeMarker>::inline_size(
                    decoder.context
                );
                if inlined != (member_inline_size <= 4) {
                    return Err(fidl::Error::InvalidInlineBitInEnvelope);
                }
                let inner_offset;
                let mut inner_depth = depth.clone();
                if inlined {
                    decoder.check_inline_envelope_padding(next_offset, member_inline_size)?;
                    inner_offset = next_offset;
                } else {
                    inner_offset = decoder.out_of_line_offset(member_inline_size)?;
                    inner_depth.increment()?;
                }
                let val_ref = self.focus_chain.get_or_insert_with(|| {
                    fidl::new_empty!(
                        fidl::encoding::UnboundedVector<fidl_fuchsia_ui_views::ViewRef>,
                        fidl::encoding::DefaultFuchsiaResourceDialect
                    )
                });
                fidl::decode!(
                    fidl::encoding::UnboundedVector<fidl_fuchsia_ui_views::ViewRef>,
                    fidl::encoding::DefaultFuchsiaResourceDialect,
                    val_ref,
                    decoder,
                    inner_offset,
                    inner_depth
                )?;
                if !inlined && decoder.next_out_of_line() != next_out_of_line + (num_bytes as usize)
                {
                    return Err(fidl::Error::InvalidNumBytesInEnvelope);
                }
                if handles_before != decoder.remaining_handles() + (num_handles as usize) {
                    return Err(fidl::Error::InvalidNumHandlesInEnvelope);
                }
            }

            next_offset += envelope_size;

            // Decode the remaining unknown envelopes.
            while next_offset < end_offset {
                _next_ordinal_to_read += 1;
                fidl::encoding::decode_unknown_envelope(decoder, next_offset, depth)?;
                next_offset += envelope_size;
            }

            Ok(())
        }
    }

    impl FocusChainProviderWatchFocusKoidChainRequest {
        #[inline(always)]
        fn max_ordinal_present(&self) -> u64 {
            0
        }
    }

    impl fidl::encoding::ValueTypeMarker for FocusChainProviderWatchFocusKoidChainRequest {
        type Borrowed<'a> = &'a Self;
        fn borrow(value: &<Self as fidl::encoding::TypeMarker>::Owned) -> Self::Borrowed<'_> {
            value
        }
    }

    unsafe impl fidl::encoding::TypeMarker for FocusChainProviderWatchFocusKoidChainRequest {
        type Owned = Self;

        #[inline(always)]
        fn inline_align(_context: fidl::encoding::Context) -> usize {
            8
        }

        #[inline(always)]
        fn inline_size(_context: fidl::encoding::Context) -> usize {
            16
        }
    }

    unsafe impl<D: fidl::encoding::ResourceDialect>
        fidl::encoding::Encode<FocusChainProviderWatchFocusKoidChainRequest, D>
        for &FocusChainProviderWatchFocusKoidChainRequest
    {
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<'_, D>,
            offset: usize,
            mut depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<FocusChainProviderWatchFocusKoidChainRequest>(offset);
            // Vector header
            let max_ordinal: u64 = self.max_ordinal_present();
            encoder.write_num(max_ordinal, offset);
            encoder.write_num(fidl::encoding::ALLOC_PRESENT_U64, offset + 8);
            // Calling encoder.out_of_line_offset(0) is not allowed.
            if max_ordinal == 0 {
                return Ok(());
            }
            depth.increment()?;
            let envelope_size = 8;
            let bytes_len = max_ordinal as usize * envelope_size;
            #[allow(unused_variables)]
            let offset = encoder.out_of_line_offset(bytes_len);
            let mut _prev_end_offset: usize = 0;

            Ok(())
        }
    }

    impl<D: fidl::encoding::ResourceDialect> fidl::encoding::Decode<Self, D>
        for FocusChainProviderWatchFocusKoidChainRequest
    {
        #[inline(always)]
        fn new_empty() -> Self {
            Self::default()
        }

        unsafe fn decode(
            &mut self,
            decoder: &mut fidl::encoding::Decoder<'_, D>,
            offset: usize,
            mut depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            decoder.debug_check_bounds::<Self>(offset);
            let len = match fidl::encoding::decode_vector_header(decoder, offset)? {
                None => return Err(fidl::Error::NotNullable),
                Some(len) => len,
            };
            // Calling decoder.out_of_line_offset(0) is not allowed.
            if len == 0 {
                return Ok(());
            };
            depth.increment()?;
            let envelope_size = 8;
            let bytes_len = len * envelope_size;
            let offset = decoder.out_of_line_offset(bytes_len)?;
            // Decode the envelope for each type.
            let mut _next_ordinal_to_read = 0;
            let mut next_offset = offset;
            let end_offset = offset + bytes_len;

            // Decode the remaining unknown envelopes.
            while next_offset < end_offset {
                _next_ordinal_to_read += 1;
                fidl::encoding::decode_unknown_envelope(decoder, next_offset, depth)?;
                next_offset += envelope_size;
            }

            Ok(())
        }
    }

    impl FocusKoidChain {
        #[inline(always)]
        fn max_ordinal_present(&self) -> u64 {
            if let Some(_) = self.focus_chain {
                return 1;
            }
            0
        }
    }

    impl fidl::encoding::ValueTypeMarker for FocusKoidChain {
        type Borrowed<'a> = &'a Self;
        fn borrow(value: &<Self as fidl::encoding::TypeMarker>::Owned) -> Self::Borrowed<'_> {
            value
        }
    }

    unsafe impl fidl::encoding::TypeMarker for FocusKoidChain {
        type Owned = Self;

        #[inline(always)]
        fn inline_align(_context: fidl::encoding::Context) -> usize {
            8
        }

        #[inline(always)]
        fn inline_size(_context: fidl::encoding::Context) -> usize {
            16
        }
    }

    unsafe impl<D: fidl::encoding::ResourceDialect> fidl::encoding::Encode<FocusKoidChain, D>
        for &FocusKoidChain
    {
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<'_, D>,
            offset: usize,
            mut depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<FocusKoidChain>(offset);
            // Vector header
            let max_ordinal: u64 = self.max_ordinal_present();
            encoder.write_num(max_ordinal, offset);
            encoder.write_num(fidl::encoding::ALLOC_PRESENT_U64, offset + 8);
            // Calling encoder.out_of_line_offset(0) is not allowed.
            if max_ordinal == 0 {
                return Ok(());
            }
            depth.increment()?;
            let envelope_size = 8;
            let bytes_len = max_ordinal as usize * envelope_size;
            #[allow(unused_variables)]
            let offset = encoder.out_of_line_offset(bytes_len);
            let mut _prev_end_offset: usize = 0;
            if 1 > max_ordinal {
                return Ok(());
            }

            // Write at offset+(ordinal-1)*envelope_size, since ordinals are one-based and envelopes
            // are envelope_size bytes.
            let cur_offset: usize = (1 - 1) * envelope_size;

            // Zero reserved fields.
            encoder.padding(offset + _prev_end_offset, cur_offset - _prev_end_offset);

            // Safety:
            // - bytes_len is calculated to fit envelope_size*max(member.ordinal).
            // - Since cur_offset is envelope_size*(member.ordinal - 1) and the envelope takes
            //   envelope_size bytes, there is always sufficient room.
            fidl::encoding::encode_in_envelope_optional::<fidl::encoding::UnboundedVector<u64>, D>(
            self.focus_chain.as_ref().map(<fidl::encoding::UnboundedVector<u64> as fidl::encoding::ValueTypeMarker>::borrow),
            encoder, offset + cur_offset, depth
        )?;

            _prev_end_offset = cur_offset + envelope_size;

            Ok(())
        }
    }

    impl<D: fidl::encoding::ResourceDialect> fidl::encoding::Decode<Self, D> for FocusKoidChain {
        #[inline(always)]
        fn new_empty() -> Self {
            Self::default()
        }

        unsafe fn decode(
            &mut self,
            decoder: &mut fidl::encoding::Decoder<'_, D>,
            offset: usize,
            mut depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            decoder.debug_check_bounds::<Self>(offset);
            let len = match fidl::encoding::decode_vector_header(decoder, offset)? {
                None => return Err(fidl::Error::NotNullable),
                Some(len) => len,
            };
            // Calling decoder.out_of_line_offset(0) is not allowed.
            if len == 0 {
                return Ok(());
            };
            depth.increment()?;
            let envelope_size = 8;
            let bytes_len = len * envelope_size;
            let offset = decoder.out_of_line_offset(bytes_len)?;
            // Decode the envelope for each type.
            let mut _next_ordinal_to_read = 0;
            let mut next_offset = offset;
            let end_offset = offset + bytes_len;
            _next_ordinal_to_read += 1;
            if next_offset >= end_offset {
                return Ok(());
            }

            // Decode unknown envelopes for gaps in ordinals.
            while _next_ordinal_to_read < 1 {
                fidl::encoding::decode_unknown_envelope(decoder, next_offset, depth)?;
                _next_ordinal_to_read += 1;
                next_offset += envelope_size;
            }

            let next_out_of_line = decoder.next_out_of_line();
            let handles_before = decoder.remaining_handles();
            if let Some((inlined, num_bytes, num_handles)) =
                fidl::encoding::decode_envelope_header(decoder, next_offset)?
            {
                let member_inline_size = <fidl::encoding::UnboundedVector<u64> as fidl::encoding::TypeMarker>::inline_size(decoder.context);
                if inlined != (member_inline_size <= 4) {
                    return Err(fidl::Error::InvalidInlineBitInEnvelope);
                }
                let inner_offset;
                let mut inner_depth = depth.clone();
                if inlined {
                    decoder.check_inline_envelope_padding(next_offset, member_inline_size)?;
                    inner_offset = next_offset;
                } else {
                    inner_offset = decoder.out_of_line_offset(member_inline_size)?;
                    inner_depth.increment()?;
                }
                let val_ref = self.focus_chain.get_or_insert_with(|| {
                    fidl::new_empty!(fidl::encoding::UnboundedVector<u64>, D)
                });
                fidl::decode!(
                    fidl::encoding::UnboundedVector<u64>,
                    D,
                    val_ref,
                    decoder,
                    inner_offset,
                    inner_depth
                )?;
                if !inlined && decoder.next_out_of_line() != next_out_of_line + (num_bytes as usize)
                {
                    return Err(fidl::Error::InvalidNumBytesInEnvelope);
                }
                if handles_before != decoder.remaining_handles() + (num_handles as usize) {
                    return Err(fidl::Error::InvalidNumHandlesInEnvelope);
                }
            }

            next_offset += envelope_size;

            // Decode the remaining unknown envelopes.
            while next_offset < end_offset {
                _next_ordinal_to_read += 1;
                fidl::encoding::decode_unknown_envelope(decoder, next_offset, depth)?;
                next_offset += envelope_size;
            }

            Ok(())
        }
    }
}