fidl_fuchsia_ui_views/

fidl_fuchsia_ui_views.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 _};
pub use fidl_fuchsia_ui_views_common::*;
use futures::future::{self, MaybeDone, TryFutureExt};
use zx_status;

#[derive(Debug, Eq, Hash, Ord, PartialEq, PartialOrd)]
pub struct FocuserRequestFocusRequest {
    pub view_ref: ViewRef,
}

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

/// Two Flatland instances may be connected in a parent-child relationship. The child endpoint is
/// held in a View. This view is strongly associated with a ViewRef and other related protocols.
///
/// ViewCreationToken is a typed wrapper for a channel, representing the child endpoint of the
/// connection between two Flatland instances. No messages will be sent over this channel, because
/// it is only used as an unclonable object with peer.
#[derive(Debug, Eq, Hash, Ord, PartialEq, PartialOrd)]
pub struct ViewCreationToken {
    pub value: fidl::Channel,
}

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

/// Token that uniquely identifies an attachment point for a `View` in the
/// global scene graph.  Each `ViewHolderToken` has exactly one corresponding
/// `ViewToken`.
///
/// A Scenic client can reference contents from another client by creating a
/// `ViewHolder` resource using this token.  The other client must also create
/// a `View` resource using the corresponding `ViewToken`.
#[derive(Debug, Eq, Hash, Ord, PartialEq, PartialOrd)]
pub struct ViewHolderToken {
    pub value: fidl::EventPair,
}

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

/// Convenience data type to self-identify the view, during view creation.
///
/// A ViewRef is used to identify the view, and can be freely cloned and
/// distributed to other components.
///
/// A ViewRefControl is used to implement lifecycle notification, and must not
/// be cloned, and cannot be distributed to other components. Scenic binds the
/// ViewRefControl object to the view, so when the view is destroyed, the
/// destruction of the ViewRefControl triggers a `ZX_EVENTPAIR_PEER_CLOSED`
/// signal to all ViewRef holders, thus notifying view death.
///
/// Usage: When creating a view, place a ViewRef and ViewRefControl together in
/// this struct, so that they travel as a unit to the destination component.
/// This convenience struct allows a protocol author to describe this traveling
/// pair as one argument. It improves readability and reduces mishandling.
#[derive(Debug, Eq, Hash, Ord, PartialEq, PartialOrd)]
pub struct ViewIdentityOnCreation {
    /// Stable identifier for the view to be created.
    pub view_ref: ViewRef,
    /// A mechanism for lifecycle notification.
    pub view_ref_control: ViewRefControl,
}

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

#[derive(Debug, Eq, Hash, Ord, PartialEq, PartialOrd)]
pub struct ViewPresentRequest {
    pub view_token: ViewToken,
}

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

/// A ViewRef is a handle to a kernel object which identifies a unique View
/// across the system. Two ViewRefs to the same View have the same KOID.
///
/// Clients use a ViewRef to identify a View, to validate a View, and to
/// receive a View invalidation signal.
///
/// As part of View creation, the client creates a linked
/// ViewRef/ViewRefControl pair and hands the pair to Scenic (ViewRefControl is
/// described below).  The client must remove the ViewRef's signal
/// capabilities; otherwise the View is not created.
///
/// The client may freely clone its ViewRef and share it, even before sending
/// it to Scenic.
///
/// Example 1. Accessibility accepts a ViewRef from a client to group the
/// semantic nodes, and semantic operations, associated with a client's View.
/// It must validate a client's ViewRef with Scenic.
///
/// Example 2. We use ViewRefs to create a FocusChain, which identifies Views
/// considered as "in-focus" down the View hierarchy. When a View is destroyed,
/// Scenic signals to all FocusChain holders that the ViewRef is now invalid.
#[derive(Debug, Eq, Hash, Ord, PartialEq, PartialOrd)]
pub struct ViewRef {
    pub reference: fidl::EventPair,
}

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

/// A ViewRefControl is the peer to a ViewRef. Their `reference`s 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.
#[derive(Debug, Eq, Hash, Ord, PartialEq, PartialOrd)]
pub struct ViewRefControl {
    pub reference: fidl::EventPair,
}

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

#[derive(Debug, Eq, Hash, Ord, PartialEq, PartialOrd)]
pub struct ViewRefInstalledWatchRequest {
    pub view_ref: ViewRef,
}

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

/// Token that uniquely identifies a `View`, which is the root point for a
/// subgraph in the global scene graph. Each `ViewToken` has exactly one
/// corresponding `ViewHolderToken`.
///
/// A Scenic client can have its contents referenced from another client by
/// creating a `View` resource using this token.  The other client must also
/// create a `ViewHolder` resource using the corresponding `ViewHolderToken`.
#[derive(Debug, Eq, Hash, Ord, PartialEq, PartialOrd)]
pub struct ViewToken {
    pub value: fidl::EventPair,
}

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

/// Two Flatland instances may be connected in a parent-child relationship. The parent endpoint is
/// held in a Viewport.
///
/// ViewportCreationToken is a typed wrapper for a channel, representing the parent endpoint of the
/// connection between two Flatlands. No messages will be sent over this channel, because it is only
/// used as an unclonable object with peer.
#[derive(Debug, Eq, Hash, Ord, PartialEq, PartialOrd)]
pub struct ViewportCreationToken {
    pub value: fidl::Channel,
}

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

#[derive(Debug, Default, PartialEq)]
pub struct FocuserSetAutoFocusRequest {
    pub view_ref: Option<ViewRef>,
    #[doc(hidden)]
    pub __source_breaking: fidl::marker::SourceBreaking,
}

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

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

impl fidl::endpoints::ProtocolMarker for FocuserMarker {
    type Proxy = FocuserProxy;
    type RequestStream = FocuserRequestStream;
    #[cfg(target_os = "fuchsia")]
    type SynchronousProxy = FocuserSynchronousProxy;

    const DEBUG_NAME: &'static str = "(anonymous) Focuser";
}
pub type FocuserRequestFocusResult = Result<(), Error>;
pub type FocuserSetAutoFocusResult = Result<(), AutoFocusError>;

pub trait FocuserProxyInterface: Send + Sync {
    type RequestFocusResponseFut: std::future::Future<Output = Result<FocuserRequestFocusResult, fidl::Error>>
        + Send;
    fn r#request_focus(&self, view_ref: ViewRef) -> Self::RequestFocusResponseFut;
    type SetAutoFocusResponseFut: std::future::Future<Output = Result<FocuserSetAutoFocusResult, fidl::Error>>
        + Send;
    fn r#set_auto_focus(
        &self,
        payload: FocuserSetAutoFocusRequest,
    ) -> Self::SetAutoFocusResponseFut;
}
#[derive(Debug)]
#[cfg(target_os = "fuchsia")]
pub struct FocuserSynchronousProxy {
    client: fidl::client::sync::Client,
}

#[cfg(target_os = "fuchsia")]
impl fidl::endpoints::SynchronousProxy for FocuserSynchronousProxy {
    type Proxy = FocuserProxy;
    type Protocol = FocuserMarker;

    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 FocuserSynchronousProxy {
    pub fn new(channel: fidl::Channel) -> Self {
        Self { client: fidl::client::sync::Client::new(channel) }
    }

    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<FocuserEvent, fidl::Error> {
        FocuserEvent::decode(self.client.wait_for_event::<FocuserMarker>(deadline)?)
    }

    /// Asks the server to transfer focus to the View specified by `view_ref`,
    /// with the authority of the requestor ViewRef. Such a request may be
    /// honored or denied.
    ///
    /// If the request was honored, and it triggers a focus change, a FocusEvent
    /// (with focused=true) is issued to the newly-focused View, and a
    /// FocusEvent (with focused=false) is issued to the previous View.
    ///
    /// The result callback indicates that the request was received and honored.
    /// It does not guarantee that the requested View actually received a
    /// FocusEvent in time.
    ///
    /// The request may be denied for many reasons, for example:
    /// - if `view_ref` is invalid
    /// - if there is no View backed by `view_ref`
    /// - if there is no requestor ViewRef accessible to Focuser
    /// - if the requestor ViewRef lacks authority over `view_ref`'s View
    /// - if `view_ref`'s View is not hittable or may not receive focus
    /// etc. A denied request is indicated with a Error.
    pub fn r#request_focus(
        &self,
        mut view_ref: ViewRef,
        ___deadline: zx::MonotonicInstant,
    ) -> Result<FocuserRequestFocusResult, fidl::Error> {
        let _response = self.client.send_query::<
            FocuserRequestFocusRequest,
            fidl::encoding::ResultType<fidl::encoding::EmptyStruct, Error>,
            FocuserMarker,
        >(
            (&mut view_ref,),
            0x559067eb07097d5,
            fidl::encoding::DynamicFlags::empty(),
            ___deadline,
        )?;
        Ok(_response.map(|x| x))
    }

    /// Sets the auto focus target to the View specified by `view_ref`.
    /// To unset the target, pass in an empty table.
    ///
    /// If a target has been set, then whenever the caller's View would receive
    /// focus, an attempt is made to transfer focus immediately to the target
    /// instead. If the target is unfocusable, the new target is the first
    /// focusable ancestor of the target instead. Setting an auto focus target
    /// places no limitations on simultaneous use of RequestFocus().
    ///
    /// An auto focus target is "valid" only while it is a descendant of the
    /// caller's View in the ViewTree. Specifying an invalid auto focus target is
    /// allowed, since it may become valid later.
    /// It is the client's responsibility to ensure the target is a valid
    /// receiver of auto focus.
    ///
    /// If the target is invalid when the auto focus behavior would trigger, then
    /// the attempt to move focus will silently fail and focus will remain with
    /// the caller's View.
    /// A target may become invalid and then become valid again any number of
    /// times; auto focus will continue to function whenever the target is
    /// in a valid state, and will continue to ignore the target while it's in an
    /// invalid state.
    ///
    /// If the focus would by some further automatic mechanism return to the
    /// caller's View (e.g. if the target is unfocusable), then focus will
    /// remain with the caller's View.
    ///
    /// AutoFocusError is currently never returned, and is reserved for possible
    /// future use.
    pub fn r#set_auto_focus(
        &self,
        mut payload: FocuserSetAutoFocusRequest,
        ___deadline: zx::MonotonicInstant,
    ) -> Result<FocuserSetAutoFocusResult, fidl::Error> {
        let _response = self.client.send_query::<
            FocuserSetAutoFocusRequest,
            fidl::encoding::ResultType<fidl::encoding::EmptyStruct, AutoFocusError>,
            FocuserMarker,
        >(
            &mut payload,
            0x480feb5856329509,
            fidl::encoding::DynamicFlags::empty(),
            ___deadline,
        )?;
        Ok(_response.map(|x| x))
    }
}

#[cfg(target_os = "fuchsia")]
impl From<FocuserSynchronousProxy> for zx::NullableHandle {
    fn from(value: FocuserSynchronousProxy) -> Self {
        value.into_channel().into()
    }
}

#[cfg(target_os = "fuchsia")]
impl From<fidl::Channel> for FocuserSynchronousProxy {
    fn from(value: fidl::Channel) -> Self {
        Self::new(value)
    }
}

#[cfg(target_os = "fuchsia")]
impl fidl::endpoints::FromClient for FocuserSynchronousProxy {
    type Protocol = FocuserMarker;

    fn from_client(value: fidl::endpoints::ClientEnd<FocuserMarker>) -> Self {
        Self::new(value.into_channel())
    }
}

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

impl fidl::endpoints::Proxy for FocuserProxy {
    type Protocol = FocuserMarker;

    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 FocuserProxy {
    /// Create a new Proxy for fuchsia.ui.views/Focuser.
    pub fn new(channel: ::fidl::AsyncChannel) -> Self {
        let protocol_name = <FocuserMarker 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) -> FocuserEventStream {
        FocuserEventStream { event_receiver: self.client.take_event_receiver() }
    }

    /// Asks the server to transfer focus to the View specified by `view_ref`,
    /// with the authority of the requestor ViewRef. Such a request may be
    /// honored or denied.
    ///
    /// If the request was honored, and it triggers a focus change, a FocusEvent
    /// (with focused=true) is issued to the newly-focused View, and a
    /// FocusEvent (with focused=false) is issued to the previous View.
    ///
    /// The result callback indicates that the request was received and honored.
    /// It does not guarantee that the requested View actually received a
    /// FocusEvent in time.
    ///
    /// The request may be denied for many reasons, for example:
    /// - if `view_ref` is invalid
    /// - if there is no View backed by `view_ref`
    /// - if there is no requestor ViewRef accessible to Focuser
    /// - if the requestor ViewRef lacks authority over `view_ref`'s View
    /// - if `view_ref`'s View is not hittable or may not receive focus
    /// etc. A denied request is indicated with a Error.
    pub fn r#request_focus(
        &self,
        mut view_ref: ViewRef,
    ) -> fidl::client::QueryResponseFut<
        FocuserRequestFocusResult,
        fidl::encoding::DefaultFuchsiaResourceDialect,
    > {
        FocuserProxyInterface::r#request_focus(self, view_ref)
    }

    /// Sets the auto focus target to the View specified by `view_ref`.
    /// To unset the target, pass in an empty table.
    ///
    /// If a target has been set, then whenever the caller's View would receive
    /// focus, an attempt is made to transfer focus immediately to the target
    /// instead. If the target is unfocusable, the new target is the first
    /// focusable ancestor of the target instead. Setting an auto focus target
    /// places no limitations on simultaneous use of RequestFocus().
    ///
    /// An auto focus target is "valid" only while it is a descendant of the
    /// caller's View in the ViewTree. Specifying an invalid auto focus target is
    /// allowed, since it may become valid later.
    /// It is the client's responsibility to ensure the target is a valid
    /// receiver of auto focus.
    ///
    /// If the target is invalid when the auto focus behavior would trigger, then
    /// the attempt to move focus will silently fail and focus will remain with
    /// the caller's View.
    /// A target may become invalid and then become valid again any number of
    /// times; auto focus will continue to function whenever the target is
    /// in a valid state, and will continue to ignore the target while it's in an
    /// invalid state.
    ///
    /// If the focus would by some further automatic mechanism return to the
    /// caller's View (e.g. if the target is unfocusable), then focus will
    /// remain with the caller's View.
    ///
    /// AutoFocusError is currently never returned, and is reserved for possible
    /// future use.
    pub fn r#set_auto_focus(
        &self,
        mut payload: FocuserSetAutoFocusRequest,
    ) -> fidl::client::QueryResponseFut<
        FocuserSetAutoFocusResult,
        fidl::encoding::DefaultFuchsiaResourceDialect,
    > {
        FocuserProxyInterface::r#set_auto_focus(self, payload)
    }
}

impl FocuserProxyInterface for FocuserProxy {
    type RequestFocusResponseFut = fidl::client::QueryResponseFut<
        FocuserRequestFocusResult,
        fidl::encoding::DefaultFuchsiaResourceDialect,
    >;
    fn r#request_focus(&self, mut view_ref: ViewRef) -> Self::RequestFocusResponseFut {
        fn _decode(
            mut _buf: Result<<fidl::encoding::DefaultFuchsiaResourceDialect as fidl::encoding::ResourceDialect>::MessageBufEtc, fidl::Error>,
        ) -> Result<FocuserRequestFocusResult, fidl::Error> {
            let _response = fidl::client::decode_transaction_body::<
                fidl::encoding::ResultType<fidl::encoding::EmptyStruct, Error>,
                fidl::encoding::DefaultFuchsiaResourceDialect,
                0x559067eb07097d5,
            >(_buf?)?;
            Ok(_response.map(|x| x))
        }
        self.client.send_query_and_decode::<FocuserRequestFocusRequest, FocuserRequestFocusResult>(
            (&mut view_ref,),
            0x559067eb07097d5,
            fidl::encoding::DynamicFlags::empty(),
            _decode,
        )
    }

    type SetAutoFocusResponseFut = fidl::client::QueryResponseFut<
        FocuserSetAutoFocusResult,
        fidl::encoding::DefaultFuchsiaResourceDialect,
    >;
    fn r#set_auto_focus(
        &self,
        mut payload: FocuserSetAutoFocusRequest,
    ) -> Self::SetAutoFocusResponseFut {
        fn _decode(
            mut _buf: Result<<fidl::encoding::DefaultFuchsiaResourceDialect as fidl::encoding::ResourceDialect>::MessageBufEtc, fidl::Error>,
        ) -> Result<FocuserSetAutoFocusResult, fidl::Error> {
            let _response = fidl::client::decode_transaction_body::<
                fidl::encoding::ResultType<fidl::encoding::EmptyStruct, AutoFocusError>,
                fidl::encoding::DefaultFuchsiaResourceDialect,
                0x480feb5856329509,
            >(_buf?)?;
            Ok(_response.map(|x| x))
        }
        self.client.send_query_and_decode::<FocuserSetAutoFocusRequest, FocuserSetAutoFocusResult>(
            &mut payload,
            0x480feb5856329509,
            fidl::encoding::DynamicFlags::empty(),
            _decode,
        )
    }
}

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

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

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

impl futures::Stream for FocuserEventStream {
    type Item = Result<FocuserEvent, 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(FocuserEvent::decode(buf))),
            None => std::task::Poll::Ready(None),
        }
    }
}

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

impl FocuserEvent {
    /// Decodes a message buffer as a [`FocuserEvent`].
    fn decode(
        mut buf: <fidl::encoding::DefaultFuchsiaResourceDialect as fidl::encoding::ResourceDialect>::MessageBufEtc,
    ) -> Result<FocuserEvent, 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: <FocuserMarker as fidl::endpoints::ProtocolMarker>::DEBUG_NAME,
            }),
        }
    }
}

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

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

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

impl fidl::endpoints::RequestStream for FocuserRequestStream {
    type Protocol = FocuserMarker;
    type ControlHandle = FocuserControlHandle;

    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 {
        FocuserControlHandle { 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 FocuserRequestStream {
    type Item = Result<FocuserRequest, 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 FocuserRequestStream 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 {
                    0x559067eb07097d5 => {
                        header.validate_request_tx_id(fidl::MethodType::TwoWay)?;
                        let mut req = fidl::new_empty!(
                            FocuserRequestFocusRequest,
                            fidl::encoding::DefaultFuchsiaResourceDialect
                        );
                        fidl::encoding::Decoder::<fidl::encoding::DefaultFuchsiaResourceDialect>::decode_into::<FocuserRequestFocusRequest>(&header, _body_bytes, handles, &mut req)?;
                        let control_handle = FocuserControlHandle { inner: this.inner.clone() };
                        Ok(FocuserRequest::RequestFocus {
                            view_ref: req.view_ref,

                            responder: FocuserRequestFocusResponder {
                                control_handle: std::mem::ManuallyDrop::new(control_handle),
                                tx_id: header.tx_id,
                            },
                        })
                    }
                    0x480feb5856329509 => {
                        header.validate_request_tx_id(fidl::MethodType::TwoWay)?;
                        let mut req = fidl::new_empty!(
                            FocuserSetAutoFocusRequest,
                            fidl::encoding::DefaultFuchsiaResourceDialect
                        );
                        fidl::encoding::Decoder::<fidl::encoding::DefaultFuchsiaResourceDialect>::decode_into::<FocuserSetAutoFocusRequest>(&header, _body_bytes, handles, &mut req)?;
                        let control_handle = FocuserControlHandle { inner: this.inner.clone() };
                        Ok(FocuserRequest::SetAutoFocus {
                            payload: req,
                            responder: FocuserSetAutoFocusResponder {
                                control_handle: std::mem::ManuallyDrop::new(control_handle),
                                tx_id: header.tx_id,
                            },
                        })
                    }
                    _ => Err(fidl::Error::UnknownOrdinal {
                        ordinal: header.ordinal,
                        protocol_name:
                            <FocuserMarker as fidl::endpoints::ProtocolMarker>::DEBUG_NAME,
                    }),
                }))
            },
        )
    }
}

/// A method of programmatically transferring View focus.
///
/// The protocol client has implicit access to a requestor ViewRef, which is
/// used as the basis for request authority.
#[derive(Debug)]
pub enum FocuserRequest {
    /// Asks the server to transfer focus to the View specified by `view_ref`,
    /// with the authority of the requestor ViewRef. Such a request may be
    /// honored or denied.
    ///
    /// If the request was honored, and it triggers a focus change, a FocusEvent
    /// (with focused=true) is issued to the newly-focused View, and a
    /// FocusEvent (with focused=false) is issued to the previous View.
    ///
    /// The result callback indicates that the request was received and honored.
    /// It does not guarantee that the requested View actually received a
    /// FocusEvent in time.
    ///
    /// The request may be denied for many reasons, for example:
    /// - if `view_ref` is invalid
    /// - if there is no View backed by `view_ref`
    /// - if there is no requestor ViewRef accessible to Focuser
    /// - if the requestor ViewRef lacks authority over `view_ref`'s View
    /// - if `view_ref`'s View is not hittable or may not receive focus
    /// etc. A denied request is indicated with a Error.
    RequestFocus { view_ref: ViewRef, responder: FocuserRequestFocusResponder },
    /// Sets the auto focus target to the View specified by `view_ref`.
    /// To unset the target, pass in an empty table.
    ///
    /// If a target has been set, then whenever the caller's View would receive
    /// focus, an attempt is made to transfer focus immediately to the target
    /// instead. If the target is unfocusable, the new target is the first
    /// focusable ancestor of the target instead. Setting an auto focus target
    /// places no limitations on simultaneous use of RequestFocus().
    ///
    /// An auto focus target is "valid" only while it is a descendant of the
    /// caller's View in the ViewTree. Specifying an invalid auto focus target is
    /// allowed, since it may become valid later.
    /// It is the client's responsibility to ensure the target is a valid
    /// receiver of auto focus.
    ///
    /// If the target is invalid when the auto focus behavior would trigger, then
    /// the attempt to move focus will silently fail and focus will remain with
    /// the caller's View.
    /// A target may become invalid and then become valid again any number of
    /// times; auto focus will continue to function whenever the target is
    /// in a valid state, and will continue to ignore the target while it's in an
    /// invalid state.
    ///
    /// If the focus would by some further automatic mechanism return to the
    /// caller's View (e.g. if the target is unfocusable), then focus will
    /// remain with the caller's View.
    ///
    /// AutoFocusError is currently never returned, and is reserved for possible
    /// future use.
    SetAutoFocus { payload: FocuserSetAutoFocusRequest, responder: FocuserSetAutoFocusResponder },
}

impl FocuserRequest {
    #[allow(irrefutable_let_patterns)]
    pub fn into_request_focus(self) -> Option<(ViewRef, FocuserRequestFocusResponder)> {
        if let FocuserRequest::RequestFocus { view_ref, responder } = self {
            Some((view_ref, responder))
        } else {
            None
        }
    }

    #[allow(irrefutable_let_patterns)]
    pub fn into_set_auto_focus(
        self,
    ) -> Option<(FocuserSetAutoFocusRequest, FocuserSetAutoFocusResponder)> {
        if let FocuserRequest::SetAutoFocus { payload, responder } = self {
            Some((payload, responder))
        } else {
            None
        }
    }

    /// Name of the method defined in FIDL
    pub fn method_name(&self) -> &'static str {
        match *self {
            FocuserRequest::RequestFocus { .. } => "request_focus",
            FocuserRequest::SetAutoFocus { .. } => "set_auto_focus",
        }
    }
}

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

impl FocuserControlHandle {
    pub fn shutdown_with_epitaph(&self, status: impl Into<fidl::Epitaph>) {
        self.inner.shutdown_with_epitaph(status.into())
    }
}

impl fidl::endpoints::ControlHandle for FocuserControlHandle {
    fn shutdown(&self) {
        self.inner.shutdown()
    }

    fn shutdown_with_epitaph(&self, status: fidl::Epitaph) {
        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 FocuserControlHandle {}

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

/// Set the the channel to be shutdown (see [`FocuserControlHandle::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 FocuserRequestFocusResponder {
    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 FocuserRequestFocusResponder {
    type ControlHandle = FocuserControlHandle;

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

    fn send_raw(&self, mut result: Result<(), Error>) -> Result<(), fidl::Error> {
        self.control_handle
            .inner
            .send::<fidl::encoding::ResultType<fidl::encoding::EmptyStruct, Error>>(
                result,
                self.tx_id,
                0x559067eb07097d5,
                fidl::encoding::DynamicFlags::empty(),
            )
    }
}

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

/// Set the the channel to be shutdown (see [`FocuserControlHandle::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 FocuserSetAutoFocusResponder {
    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 FocuserSetAutoFocusResponder {
    type ControlHandle = FocuserControlHandle;

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

    fn send_raw(&self, mut result: Result<(), AutoFocusError>) -> Result<(), fidl::Error> {
        self.control_handle.inner.send::<fidl::encoding::ResultType<
            fidl::encoding::EmptyStruct,
            AutoFocusError,
        >>(
            result,
            self.tx_id,
            0x480feb5856329509,
            fidl::encoding::DynamicFlags::empty(),
        )
    }
}

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

impl fidl::endpoints::ProtocolMarker for ViewMarker {
    type Proxy = ViewProxy;
    type RequestStream = ViewRequestStream;
    #[cfg(target_os = "fuchsia")]
    type SynchronousProxy = ViewSynchronousProxy;

    const DEBUG_NAME: &'static str = "fuchsia.ui.views.View";
}
impl fidl::endpoints::DiscoverableProtocolMarker for ViewMarker {}

pub trait ViewProxyInterface: Send + Sync {
    fn r#present(&self, view_token: ViewToken) -> Result<(), fidl::Error>;
}
#[derive(Debug)]
#[cfg(target_os = "fuchsia")]
pub struct ViewSynchronousProxy {
    client: fidl::client::sync::Client,
}

#[cfg(target_os = "fuchsia")]
impl fidl::endpoints::SynchronousProxy for ViewSynchronousProxy {
    type Proxy = ViewProxy;
    type Protocol = ViewMarker;

    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 ViewSynchronousProxy {
    pub fn new(channel: fidl::Channel) -> Self {
        Self { client: fidl::client::sync::Client::new(channel) }
    }

    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<ViewEvent, fidl::Error> {
        ViewEvent::decode(self.client.wait_for_event::<ViewMarker>(deadline)?)
    }

    /// Provides the View with an attachment point to Scenic's scene graph.
    ///
    /// When `Present()` is called the View's implementation should create a
    /// View resource within Scenic by providing it with the `view_token` (using
    /// a `fuchsia.ui.gfx.CreateResourceCmd` and `fuchsia.ui.gfx.ViewArgs`).
    ///
    /// Then the implementation should attach its graphical content to the
    /// newly-created View resource using a `fuchsia.ui.gfx.AddChildCmd`.
    ///
    /// If the implementation already owns a View resource (because `Present()`
    /// had already been called before), then it should terminate the connection
    /// with an error.
    ///
    /// TODO(https://fxbug.dev/42098670): Allow re-parenting `View`s with a new `Present()` call.
    pub fn r#present(&self, mut view_token: ViewToken) -> Result<(), fidl::Error> {
        self.client.send::<ViewPresentRequest>(
            (&mut view_token,),
            0x6e98ebc6c9de6d9e,
            fidl::encoding::DynamicFlags::empty(),
        )
    }
}

#[cfg(target_os = "fuchsia")]
impl From<ViewSynchronousProxy> for zx::NullableHandle {
    fn from(value: ViewSynchronousProxy) -> Self {
        value.into_channel().into()
    }
}

#[cfg(target_os = "fuchsia")]
impl From<fidl::Channel> for ViewSynchronousProxy {
    fn from(value: fidl::Channel) -> Self {
        Self::new(value)
    }
}

#[cfg(target_os = "fuchsia")]
impl fidl::endpoints::FromClient for ViewSynchronousProxy {
    type Protocol = ViewMarker;

    fn from_client(value: fidl::endpoints::ClientEnd<ViewMarker>) -> Self {
        Self::new(value.into_channel())
    }
}

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

impl fidl::endpoints::Proxy for ViewProxy {
    type Protocol = ViewMarker;

    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 ViewProxy {
    /// Create a new Proxy for fuchsia.ui.views/View.
    pub fn new(channel: ::fidl::AsyncChannel) -> Self {
        let protocol_name = <ViewMarker 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) -> ViewEventStream {
        ViewEventStream { event_receiver: self.client.take_event_receiver() }
    }

    /// Provides the View with an attachment point to Scenic's scene graph.
    ///
    /// When `Present()` is called the View's implementation should create a
    /// View resource within Scenic by providing it with the `view_token` (using
    /// a `fuchsia.ui.gfx.CreateResourceCmd` and `fuchsia.ui.gfx.ViewArgs`).
    ///
    /// Then the implementation should attach its graphical content to the
    /// newly-created View resource using a `fuchsia.ui.gfx.AddChildCmd`.
    ///
    /// If the implementation already owns a View resource (because `Present()`
    /// had already been called before), then it should terminate the connection
    /// with an error.
    ///
    /// TODO(https://fxbug.dev/42098670): Allow re-parenting `View`s with a new `Present()` call.
    pub fn r#present(&self, mut view_token: ViewToken) -> Result<(), fidl::Error> {
        ViewProxyInterface::r#present(self, view_token)
    }
}

impl ViewProxyInterface for ViewProxy {
    fn r#present(&self, mut view_token: ViewToken) -> Result<(), fidl::Error> {
        self.client.send::<ViewPresentRequest>(
            (&mut view_token,),
            0x6e98ebc6c9de6d9e,
            fidl::encoding::DynamicFlags::empty(),
        )
    }
}

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

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

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

impl futures::Stream for ViewEventStream {
    type Item = Result<ViewEvent, 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(ViewEvent::decode(buf))),
            None => std::task::Poll::Ready(None),
        }
    }
}

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

impl ViewEvent {
    /// Decodes a message buffer as a [`ViewEvent`].
    fn decode(
        mut buf: <fidl::encoding::DefaultFuchsiaResourceDialect as fidl::encoding::ResourceDialect>::MessageBufEtc,
    ) -> Result<ViewEvent, 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: <ViewMarker as fidl::endpoints::ProtocolMarker>::DEBUG_NAME,
            }),
        }
    }
}

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

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

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

impl fidl::endpoints::RequestStream for ViewRequestStream {
    type Protocol = ViewMarker;
    type ControlHandle = ViewControlHandle;

    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 {
        ViewControlHandle { 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 ViewRequestStream {
    type Item = Result<ViewRequest, 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 ViewRequestStream 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 {
                    0x6e98ebc6c9de6d9e => {
                        header.validate_request_tx_id(fidl::MethodType::OneWay)?;
                        let mut req = fidl::new_empty!(
                            ViewPresentRequest,
                            fidl::encoding::DefaultFuchsiaResourceDialect
                        );
                        fidl::encoding::Decoder::<fidl::encoding::DefaultFuchsiaResourceDialect>::decode_into::<ViewPresentRequest>(&header, _body_bytes, handles, &mut req)?;
                        let control_handle = ViewControlHandle { inner: this.inner.clone() };
                        Ok(ViewRequest::Present { view_token: req.view_token, control_handle })
                    }
                    _ => Err(fidl::Error::UnknownOrdinal {
                        ordinal: header.ordinal,
                        protocol_name: <ViewMarker as fidl::endpoints::ProtocolMarker>::DEBUG_NAME,
                    }),
                }))
            },
        )
    }
}

/// Deprecated API for view creation. DO NOT USE.
#[derive(Debug)]
pub enum ViewRequest {
    /// Provides the View with an attachment point to Scenic's scene graph.
    ///
    /// When `Present()` is called the View's implementation should create a
    /// View resource within Scenic by providing it with the `view_token` (using
    /// a `fuchsia.ui.gfx.CreateResourceCmd` and `fuchsia.ui.gfx.ViewArgs`).
    ///
    /// Then the implementation should attach its graphical content to the
    /// newly-created View resource using a `fuchsia.ui.gfx.AddChildCmd`.
    ///
    /// If the implementation already owns a View resource (because `Present()`
    /// had already been called before), then it should terminate the connection
    /// with an error.
    ///
    /// TODO(https://fxbug.dev/42098670): Allow re-parenting `View`s with a new `Present()` call.
    Present { view_token: ViewToken, control_handle: ViewControlHandle },
}

impl ViewRequest {
    #[allow(irrefutable_let_patterns)]
    pub fn into_present(self) -> Option<(ViewToken, ViewControlHandle)> {
        if let ViewRequest::Present { view_token, control_handle } = self {
            Some((view_token, control_handle))
        } else {
            None
        }
    }

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

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

impl ViewControlHandle {
    pub fn shutdown_with_epitaph(&self, status: impl Into<fidl::Epitaph>) {
        self.inner.shutdown_with_epitaph(status.into())
    }
}

impl fidl::endpoints::ControlHandle for ViewControlHandle {
    fn shutdown(&self) {
        self.inner.shutdown()
    }

    fn shutdown_with_epitaph(&self, status: fidl::Epitaph) {
        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 ViewControlHandle {}

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

impl fidl::endpoints::ProtocolMarker for ViewRefFocusedMarker {
    type Proxy = ViewRefFocusedProxy;
    type RequestStream = ViewRefFocusedRequestStream;
    #[cfg(target_os = "fuchsia")]
    type SynchronousProxy = ViewRefFocusedSynchronousProxy;

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

pub trait ViewRefFocusedProxyInterface: Send + Sync {
    type WatchResponseFut: std::future::Future<Output = Result<FocusState, fidl::Error>> + Send;
    fn r#watch(&self) -> Self::WatchResponseFut;
}
#[derive(Debug)]
#[cfg(target_os = "fuchsia")]
pub struct ViewRefFocusedSynchronousProxy {
    client: fidl::client::sync::Client,
}

#[cfg(target_os = "fuchsia")]
impl fidl::endpoints::SynchronousProxy for ViewRefFocusedSynchronousProxy {
    type Proxy = ViewRefFocusedProxy;
    type Protocol = ViewRefFocusedMarker;

    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 ViewRefFocusedSynchronousProxy {
    pub fn new(channel: fidl::Channel) -> Self {
        Self { client: fidl::client::sync::Client::new(channel) }
    }

    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<ViewRefFocusedEvent, fidl::Error> {
        ViewRefFocusedEvent::decode(self.client.wait_for_event::<ViewRefFocusedMarker>(deadline)?)
    }

    /// Sets up a callback to fire when the implicit ViewRef has gained or lost
    /// focus. Typically, focus changes happen at a slow pace, such that every
    /// transition is captured by the callback. However, focus changes can
    /// happen rapidly, so the callback may "compress" focus change history into
    /// just the latest known focus state.
    ///
    /// The callback reports the last focus change spanning the duration from
    /// its issuance to the previous callback's issuance. The client may observe
    /// any of the following four transitions:
    /// - true -> true: The ViewRef has lost focus at least once, and has gained
    ///   focus by the time of callback issuance.
    /// - true -> false: The ViewRef has lost focus at least once, and has lost
    ///   focus by the time of callback issuance.
    /// - false -> true: The ViewRef has gained focus at least once, and has
    ///   gained focus by the time of callback issuance.
    /// - false -> false: The ViewRef has gained focus at least once, and has
    ///   lost focus by the time of callback issuance.
    ///
    /// The client avoids "focus flapping" and always sees the latest state.
    /// Every callback issuance is meaningful, and the client should renegotiate
    /// focus-related services appropriately, such as IME.
    ///
    /// Flow control: The caller is allowed at most one in-flight |Watch| call
    /// at at time: subsequent |Watch| calls must wait until the acknowledgment
    /// returns. Non-compliance results in channel closure.
    pub fn r#watch(&self, ___deadline: zx::MonotonicInstant) -> Result<FocusState, fidl::Error> {
        let _response = self.client.send_query::<
            fidl::encoding::EmptyPayload,
            ViewRefFocusedWatchResponse,
            ViewRefFocusedMarker,
        >(
            (),
            0x3c5e51096d9299b5,
            fidl::encoding::DynamicFlags::empty(),
            ___deadline,
        )?;
        Ok(_response.state)
    }
}

#[cfg(target_os = "fuchsia")]
impl From<ViewRefFocusedSynchronousProxy> for zx::NullableHandle {
    fn from(value: ViewRefFocusedSynchronousProxy) -> Self {
        value.into_channel().into()
    }
}

#[cfg(target_os = "fuchsia")]
impl From<fidl::Channel> for ViewRefFocusedSynchronousProxy {
    fn from(value: fidl::Channel) -> Self {
        Self::new(value)
    }
}

#[cfg(target_os = "fuchsia")]
impl fidl::endpoints::FromClient for ViewRefFocusedSynchronousProxy {
    type Protocol = ViewRefFocusedMarker;

    fn from_client(value: fidl::endpoints::ClientEnd<ViewRefFocusedMarker>) -> Self {
        Self::new(value.into_channel())
    }
}

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

impl fidl::endpoints::Proxy for ViewRefFocusedProxy {
    type Protocol = ViewRefFocusedMarker;

    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 ViewRefFocusedProxy {
    /// Create a new Proxy for fuchsia.ui.views/ViewRefFocused.
    pub fn new(channel: ::fidl::AsyncChannel) -> Self {
        let protocol_name = <ViewRefFocusedMarker 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) -> ViewRefFocusedEventStream {
        ViewRefFocusedEventStream { event_receiver: self.client.take_event_receiver() }
    }

    /// Sets up a callback to fire when the implicit ViewRef has gained or lost
    /// focus. Typically, focus changes happen at a slow pace, such that every
    /// transition is captured by the callback. However, focus changes can
    /// happen rapidly, so the callback may "compress" focus change history into
    /// just the latest known focus state.
    ///
    /// The callback reports the last focus change spanning the duration from
    /// its issuance to the previous callback's issuance. The client may observe
    /// any of the following four transitions:
    /// - true -> true: The ViewRef has lost focus at least once, and has gained
    ///   focus by the time of callback issuance.
    /// - true -> false: The ViewRef has lost focus at least once, and has lost
    ///   focus by the time of callback issuance.
    /// - false -> true: The ViewRef has gained focus at least once, and has
    ///   gained focus by the time of callback issuance.
    /// - false -> false: The ViewRef has gained focus at least once, and has
    ///   lost focus by the time of callback issuance.
    ///
    /// The client avoids "focus flapping" and always sees the latest state.
    /// Every callback issuance is meaningful, and the client should renegotiate
    /// focus-related services appropriately, such as IME.
    ///
    /// Flow control: The caller is allowed at most one in-flight |Watch| call
    /// at at time: subsequent |Watch| calls must wait until the acknowledgment
    /// returns. Non-compliance results in channel closure.
    pub fn r#watch(
        &self,
    ) -> fidl::client::QueryResponseFut<FocusState, fidl::encoding::DefaultFuchsiaResourceDialect>
    {
        ViewRefFocusedProxyInterface::r#watch(self)
    }
}

impl ViewRefFocusedProxyInterface for ViewRefFocusedProxy {
    type WatchResponseFut =
        fidl::client::QueryResponseFut<FocusState, fidl::encoding::DefaultFuchsiaResourceDialect>;
    fn r#watch(&self) -> Self::WatchResponseFut {
        fn _decode(
            mut _buf: Result<<fidl::encoding::DefaultFuchsiaResourceDialect as fidl::encoding::ResourceDialect>::MessageBufEtc, fidl::Error>,
        ) -> Result<FocusState, fidl::Error> {
            let _response = fidl::client::decode_transaction_body::<
                ViewRefFocusedWatchResponse,
                fidl::encoding::DefaultFuchsiaResourceDialect,
                0x3c5e51096d9299b5,
            >(_buf?)?;
            Ok(_response.state)
        }
        self.client.send_query_and_decode::<fidl::encoding::EmptyPayload, FocusState>(
            (),
            0x3c5e51096d9299b5,
            fidl::encoding::DynamicFlags::empty(),
            _decode,
        )
    }
}

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

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

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

impl futures::Stream for ViewRefFocusedEventStream {
    type Item = Result<ViewRefFocusedEvent, 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(ViewRefFocusedEvent::decode(buf))),
            None => std::task::Poll::Ready(None),
        }
    }
}

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

impl ViewRefFocusedEvent {
    /// Decodes a message buffer as a [`ViewRefFocusedEvent`].
    fn decode(
        mut buf: <fidl::encoding::DefaultFuchsiaResourceDialect as fidl::encoding::ResourceDialect>::MessageBufEtc,
    ) -> Result<ViewRefFocusedEvent, 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:
                    <ViewRefFocusedMarker as fidl::endpoints::ProtocolMarker>::DEBUG_NAME,
            }),
        }
    }
}

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

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

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

impl fidl::endpoints::RequestStream for ViewRefFocusedRequestStream {
    type Protocol = ViewRefFocusedMarker;
    type ControlHandle = ViewRefFocusedControlHandle;

    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 {
        ViewRefFocusedControlHandle { 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 ViewRefFocusedRequestStream {
    type Item = Result<ViewRefFocusedRequest, 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 ViewRefFocusedRequestStream 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 {
                    0x3c5e51096d9299b5 => {
                        header.validate_request_tx_id(fidl::MethodType::TwoWay)?;
                        let mut req = fidl::new_empty!(
                            fidl::encoding::EmptyPayload,
                            fidl::encoding::DefaultFuchsiaResourceDialect
                        );
                        fidl::encoding::Decoder::<fidl::encoding::DefaultFuchsiaResourceDialect>::decode_into::<fidl::encoding::EmptyPayload>(&header, _body_bytes, handles, &mut req)?;
                        let control_handle =
                            ViewRefFocusedControlHandle { inner: this.inner.clone() };
                        Ok(ViewRefFocusedRequest::Watch {
                            responder: ViewRefFocusedWatchResponder {
                                control_handle: std::mem::ManuallyDrop::new(control_handle),
                                tx_id: header.tx_id,
                            },
                        })
                    }
                    _ => Err(fidl::Error::UnknownOrdinal {
                        ordinal: header.ordinal,
                        protocol_name:
                            <ViewRefFocusedMarker as fidl::endpoints::ProtocolMarker>::DEBUG_NAME,
                    }),
                }))
            },
        )
    }
}

/// A method of enabling a ViewRef creator to determine if its ViewRef has
/// gained or lost focus in the view tree.
///
/// The protocol client has implicit access to the ViewRef it created; the
/// protocol itself does not accept a ViewRef parameter. Clients, both trusted
/// or otherwise, need access to view-focus state, so the protocol is
/// deliberately minimal. Possession of a ViewRef (and this protocol) does not
/// grant the power to learn about a ViewRef's focus state.
#[derive(Debug)]
pub enum ViewRefFocusedRequest {
    /// Sets up a callback to fire when the implicit ViewRef has gained or lost
    /// focus. Typically, focus changes happen at a slow pace, such that every
    /// transition is captured by the callback. However, focus changes can
    /// happen rapidly, so the callback may "compress" focus change history into
    /// just the latest known focus state.
    ///
    /// The callback reports the last focus change spanning the duration from
    /// its issuance to the previous callback's issuance. The client may observe
    /// any of the following four transitions:
    /// - true -> true: The ViewRef has lost focus at least once, and has gained
    ///   focus by the time of callback issuance.
    /// - true -> false: The ViewRef has lost focus at least once, and has lost
    ///   focus by the time of callback issuance.
    /// - false -> true: The ViewRef has gained focus at least once, and has
    ///   gained focus by the time of callback issuance.
    /// - false -> false: The ViewRef has gained focus at least once, and has
    ///   lost focus by the time of callback issuance.
    ///
    /// The client avoids "focus flapping" and always sees the latest state.
    /// Every callback issuance is meaningful, and the client should renegotiate
    /// focus-related services appropriately, such as IME.
    ///
    /// Flow control: The caller is allowed at most one in-flight |Watch| call
    /// at at time: subsequent |Watch| calls must wait until the acknowledgment
    /// returns. Non-compliance results in channel closure.
    Watch { responder: ViewRefFocusedWatchResponder },
}

impl ViewRefFocusedRequest {
    #[allow(irrefutable_let_patterns)]
    pub fn into_watch(self) -> Option<(ViewRefFocusedWatchResponder)> {
        if let ViewRefFocusedRequest::Watch { responder } = self { Some((responder)) } else { None }
    }

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

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

impl ViewRefFocusedControlHandle {
    pub fn shutdown_with_epitaph(&self, status: impl Into<fidl::Epitaph>) {
        self.inner.shutdown_with_epitaph(status.into())
    }
}

impl fidl::endpoints::ControlHandle for ViewRefFocusedControlHandle {
    fn shutdown(&self) {
        self.inner.shutdown()
    }

    fn shutdown_with_epitaph(&self, status: fidl::Epitaph) {
        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 ViewRefFocusedControlHandle {}

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

/// Set the the channel to be shutdown (see [`ViewRefFocusedControlHandle::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 ViewRefFocusedWatchResponder {
    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 ViewRefFocusedWatchResponder {
    type ControlHandle = ViewRefFocusedControlHandle;

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

    fn send_raw(&self, mut state: &FocusState) -> Result<(), fidl::Error> {
        self.control_handle.inner.send::<ViewRefFocusedWatchResponse>(
            (state,),
            self.tx_id,
            0x3c5e51096d9299b5,
            fidl::encoding::DynamicFlags::empty(),
        )
    }
}

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

impl fidl::endpoints::ProtocolMarker for ViewRefInstalledMarker {
    type Proxy = ViewRefInstalledProxy;
    type RequestStream = ViewRefInstalledRequestStream;
    #[cfg(target_os = "fuchsia")]
    type SynchronousProxy = ViewRefInstalledSynchronousProxy;

    const DEBUG_NAME: &'static str = "fuchsia.ui.views.ViewRefInstalled";
}
impl fidl::endpoints::DiscoverableProtocolMarker for ViewRefInstalledMarker {}
pub type ViewRefInstalledWatchResult = Result<(), ViewRefInstalledError>;

pub trait ViewRefInstalledProxyInterface: Send + Sync {
    type WatchResponseFut: std::future::Future<Output = Result<ViewRefInstalledWatchResult, fidl::Error>>
        + Send;
    fn r#watch(&self, view_ref: ViewRef) -> Self::WatchResponseFut;
}
#[derive(Debug)]
#[cfg(target_os = "fuchsia")]
pub struct ViewRefInstalledSynchronousProxy {
    client: fidl::client::sync::Client,
}

#[cfg(target_os = "fuchsia")]
impl fidl::endpoints::SynchronousProxy for ViewRefInstalledSynchronousProxy {
    type Proxy = ViewRefInstalledProxy;
    type Protocol = ViewRefInstalledMarker;

    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 ViewRefInstalledSynchronousProxy {
    pub fn new(channel: fidl::Channel) -> Self {
        Self { client: fidl::client::sync::Client::new(channel) }
    }

    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<ViewRefInstalledEvent, fidl::Error> {
        ViewRefInstalledEvent::decode(
            self.client.wait_for_event::<ViewRefInstalledMarker>(deadline)?,
        )
    }

    /// Sets up a callback to fire when the requested |view_ref| is installed.
    /// - If |view_ref| has not already been installed, the |Watch| response
    ///   will fire when it is.
    /// - If |view_ref| has already been installed, the |Watch| response will
    ///   fire immediately.
    /// - If |view_ref| is invalid, or becomes invalid (perhaps because the view
    ///   was destroyed), the |Watch| call returns with an error.  The error is
    ///   not guaranteed to be immediate, but a ViewRef holder can itself
    ///   determine ViewRef validity by listening for ZX_EVENTPAIR_PEER_CLOSED.
    ///
    /// Flow control: The caller is allowed multiple |Watch| calls on multiple
    /// ViewRefs. There is at most one response per call back to the client.
    ///
    /// Note: Prior to installation, this |Watch| call is kept alive as long as
    ///       the ViewRef is valid.
    pub fn r#watch(
        &self,
        mut view_ref: ViewRef,
        ___deadline: zx::MonotonicInstant,
    ) -> Result<ViewRefInstalledWatchResult, fidl::Error> {
        let _response =
            self.client.send_query::<ViewRefInstalledWatchRequest, fidl::encoding::ResultType<
                fidl::encoding::EmptyStruct,
                ViewRefInstalledError,
            >, ViewRefInstalledMarker>(
                (&mut view_ref,),
                0x7ddec2f4ca687971,
                fidl::encoding::DynamicFlags::empty(),
                ___deadline,
            )?;
        Ok(_response.map(|x| x))
    }
}

#[cfg(target_os = "fuchsia")]
impl From<ViewRefInstalledSynchronousProxy> for zx::NullableHandle {
    fn from(value: ViewRefInstalledSynchronousProxy) -> Self {
        value.into_channel().into()
    }
}

#[cfg(target_os = "fuchsia")]
impl From<fidl::Channel> for ViewRefInstalledSynchronousProxy {
    fn from(value: fidl::Channel) -> Self {
        Self::new(value)
    }
}

#[cfg(target_os = "fuchsia")]
impl fidl::endpoints::FromClient for ViewRefInstalledSynchronousProxy {
    type Protocol = ViewRefInstalledMarker;

    fn from_client(value: fidl::endpoints::ClientEnd<ViewRefInstalledMarker>) -> Self {
        Self::new(value.into_channel())
    }
}

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

impl fidl::endpoints::Proxy for ViewRefInstalledProxy {
    type Protocol = ViewRefInstalledMarker;

    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 ViewRefInstalledProxy {
    /// Create a new Proxy for fuchsia.ui.views/ViewRefInstalled.
    pub fn new(channel: ::fidl::AsyncChannel) -> Self {
        let protocol_name = <ViewRefInstalledMarker 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) -> ViewRefInstalledEventStream {
        ViewRefInstalledEventStream { event_receiver: self.client.take_event_receiver() }
    }

    /// Sets up a callback to fire when the requested |view_ref| is installed.
    /// - If |view_ref| has not already been installed, the |Watch| response
    ///   will fire when it is.
    /// - If |view_ref| has already been installed, the |Watch| response will
    ///   fire immediately.
    /// - If |view_ref| is invalid, or becomes invalid (perhaps because the view
    ///   was destroyed), the |Watch| call returns with an error.  The error is
    ///   not guaranteed to be immediate, but a ViewRef holder can itself
    ///   determine ViewRef validity by listening for ZX_EVENTPAIR_PEER_CLOSED.
    ///
    /// Flow control: The caller is allowed multiple |Watch| calls on multiple
    /// ViewRefs. There is at most one response per call back to the client.
    ///
    /// Note: Prior to installation, this |Watch| call is kept alive as long as
    ///       the ViewRef is valid.
    pub fn r#watch(
        &self,
        mut view_ref: ViewRef,
    ) -> fidl::client::QueryResponseFut<
        ViewRefInstalledWatchResult,
        fidl::encoding::DefaultFuchsiaResourceDialect,
    > {
        ViewRefInstalledProxyInterface::r#watch(self, view_ref)
    }
}

impl ViewRefInstalledProxyInterface for ViewRefInstalledProxy {
    type WatchResponseFut = fidl::client::QueryResponseFut<
        ViewRefInstalledWatchResult,
        fidl::encoding::DefaultFuchsiaResourceDialect,
    >;
    fn r#watch(&self, mut view_ref: ViewRef) -> Self::WatchResponseFut {
        fn _decode(
            mut _buf: Result<<fidl::encoding::DefaultFuchsiaResourceDialect as fidl::encoding::ResourceDialect>::MessageBufEtc, fidl::Error>,
        ) -> Result<ViewRefInstalledWatchResult, fidl::Error> {
            let _response = fidl::client::decode_transaction_body::<
                fidl::encoding::ResultType<fidl::encoding::EmptyStruct, ViewRefInstalledError>,
                fidl::encoding::DefaultFuchsiaResourceDialect,
                0x7ddec2f4ca687971,
            >(_buf?)?;
            Ok(_response.map(|x| x))
        }
        self.client
            .send_query_and_decode::<ViewRefInstalledWatchRequest, ViewRefInstalledWatchResult>(
                (&mut view_ref,),
                0x7ddec2f4ca687971,
                fidl::encoding::DynamicFlags::empty(),
                _decode,
            )
    }
}

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

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

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

impl futures::Stream for ViewRefInstalledEventStream {
    type Item = Result<ViewRefInstalledEvent, 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(ViewRefInstalledEvent::decode(buf))),
            None => std::task::Poll::Ready(None),
        }
    }
}

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

impl ViewRefInstalledEvent {
    /// Decodes a message buffer as a [`ViewRefInstalledEvent`].
    fn decode(
        mut buf: <fidl::encoding::DefaultFuchsiaResourceDialect as fidl::encoding::ResourceDialect>::MessageBufEtc,
    ) -> Result<ViewRefInstalledEvent, 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:
                    <ViewRefInstalledMarker as fidl::endpoints::ProtocolMarker>::DEBUG_NAME,
            }),
        }
    }
}

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

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

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

impl fidl::endpoints::RequestStream for ViewRefInstalledRequestStream {
    type Protocol = ViewRefInstalledMarker;
    type ControlHandle = ViewRefInstalledControlHandle;

    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 {
        ViewRefInstalledControlHandle { 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 ViewRefInstalledRequestStream {
    type Item = Result<ViewRefInstalledRequest, 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 ViewRefInstalledRequestStream 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 {
                    0x7ddec2f4ca687971 => {
                        header.validate_request_tx_id(fidl::MethodType::TwoWay)?;
                        let mut req = fidl::new_empty!(
                            ViewRefInstalledWatchRequest,
                            fidl::encoding::DefaultFuchsiaResourceDialect
                        );
                        fidl::encoding::Decoder::<fidl::encoding::DefaultFuchsiaResourceDialect>::decode_into::<ViewRefInstalledWatchRequest>(&header, _body_bytes, handles, &mut req)?;
                        let control_handle =
                            ViewRefInstalledControlHandle { inner: this.inner.clone() };
                        Ok(ViewRefInstalledRequest::Watch {
                            view_ref: req.view_ref,

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

/// A method of enabling ViewRef holders to determine if a ViewRef has been
/// "installed" in the view tree: the time it is first connected, transitively,
/// to the root view.  Typically, after installation, view focus may be
/// transferred to that ViewRef.
///
/// Note: It's important to distinguish between a ViewRef's installed status and
///       current connected-to-view-tree status.  The former undergoes a state
///       change once, from "no" to "yes".  The latter may change continuously,
///       depending on view tree topology.  As such, "installed" cannot imply
///       "currently connected to view tree"; even a hypothetical
///       "ViewRefConnected" protocol is fundamentally racy.
#[derive(Debug)]
pub enum ViewRefInstalledRequest {
    /// Sets up a callback to fire when the requested |view_ref| is installed.
    /// - If |view_ref| has not already been installed, the |Watch| response
    ///   will fire when it is.
    /// - If |view_ref| has already been installed, the |Watch| response will
    ///   fire immediately.
    /// - If |view_ref| is invalid, or becomes invalid (perhaps because the view
    ///   was destroyed), the |Watch| call returns with an error.  The error is
    ///   not guaranteed to be immediate, but a ViewRef holder can itself
    ///   determine ViewRef validity by listening for ZX_EVENTPAIR_PEER_CLOSED.
    ///
    /// Flow control: The caller is allowed multiple |Watch| calls on multiple
    /// ViewRefs. There is at most one response per call back to the client.
    ///
    /// Note: Prior to installation, this |Watch| call is kept alive as long as
    ///       the ViewRef is valid.
    Watch { view_ref: ViewRef, responder: ViewRefInstalledWatchResponder },
}

impl ViewRefInstalledRequest {
    #[allow(irrefutable_let_patterns)]
    pub fn into_watch(self) -> Option<(ViewRef, ViewRefInstalledWatchResponder)> {
        if let ViewRefInstalledRequest::Watch { view_ref, responder } = self {
            Some((view_ref, responder))
        } else {
            None
        }
    }

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

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

impl ViewRefInstalledControlHandle {
    pub fn shutdown_with_epitaph(&self, status: impl Into<fidl::Epitaph>) {
        self.inner.shutdown_with_epitaph(status.into())
    }
}

impl fidl::endpoints::ControlHandle for ViewRefInstalledControlHandle {
    fn shutdown(&self) {
        self.inner.shutdown()
    }

    fn shutdown_with_epitaph(&self, status: fidl::Epitaph) {
        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 ViewRefInstalledControlHandle {}

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

/// Set the the channel to be shutdown (see [`ViewRefInstalledControlHandle::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 ViewRefInstalledWatchResponder {
    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 ViewRefInstalledWatchResponder {
    type ControlHandle = ViewRefInstalledControlHandle;

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

    fn send_raw(&self, mut result: Result<(), ViewRefInstalledError>) -> Result<(), fidl::Error> {
        self.control_handle.inner.send::<fidl::encoding::ResultType<
            fidl::encoding::EmptyStruct,
            ViewRefInstalledError,
        >>(
            result,
            self.tx_id,
            0x7ddec2f4ca687971,
            fidl::encoding::DynamicFlags::empty(),
        )
    }
}

mod internal {
    use super::*;

    impl fidl::encoding::ResourceTypeMarker for FocuserRequestFocusRequest {
        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 FocuserRequestFocusRequest {
        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<
            FocuserRequestFocusRequest,
            fidl::encoding::DefaultFuchsiaResourceDialect,
        > for &mut FocuserRequestFocusRequest
    {
        #[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::<FocuserRequestFocusRequest>(offset);
            // Delegate to tuple encoding.
            fidl::encoding::Encode::<
                FocuserRequestFocusRequest,
                fidl::encoding::DefaultFuchsiaResourceDialect,
            >::encode(
                (<ViewRef as fidl::encoding::ResourceTypeMarker>::take_or_borrow(
                    &mut self.view_ref,
                ),),
                encoder,
                offset,
                _depth,
            )
        }
    }
    unsafe impl<T0: fidl::encoding::Encode<ViewRef, fidl::encoding::DefaultFuchsiaResourceDialect>>
        fidl::encoding::Encode<
            FocuserRequestFocusRequest,
            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::<FocuserRequestFocusRequest>(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 FocuserRequestFocusRequest
    {
        #[inline(always)]
        fn new_empty() -> Self {
            Self {
                view_ref: fidl::new_empty!(ViewRef, 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!(
                ViewRef,
                fidl::encoding::DefaultFuchsiaResourceDialect,
                &mut self.view_ref,
                decoder,
                offset + 0,
                _depth
            )?;
            Ok(())
        }
    }

    impl fidl::encoding::ResourceTypeMarker for ViewCreationToken {
        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 ViewCreationToken {
        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<ViewCreationToken, fidl::encoding::DefaultFuchsiaResourceDialect>
        for &mut ViewCreationToken
    {
        #[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::<ViewCreationToken>(offset);
            // Delegate to tuple encoding.
            fidl::encoding::Encode::<ViewCreationToken, fidl::encoding::DefaultFuchsiaResourceDialect>::encode(
                (
                    <fidl::encoding::HandleType<fidl::Channel, { fidl::ObjectType::CHANNEL.into_raw() }, 2147483648> as fidl::encoding::ResourceTypeMarker>::take_or_borrow(&mut self.value),
                ),
                encoder, offset, _depth
            )
        }
    }
    unsafe impl<
        T0: fidl::encoding::Encode<
                fidl::encoding::HandleType<
                    fidl::Channel,
                    { fidl::ObjectType::CHANNEL.into_raw() },
                    2147483648,
                >,
                fidl::encoding::DefaultFuchsiaResourceDialect,
            >,
    > fidl::encoding::Encode<ViewCreationToken, 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::<ViewCreationToken>(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 ViewCreationToken
    {
        #[inline(always)]
        fn new_empty() -> Self {
            Self {
                value: fidl::new_empty!(fidl::encoding::HandleType<fidl::Channel, { fidl::ObjectType::CHANNEL.into_raw() }, 2147483648>, 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::HandleType<fidl::Channel, { fidl::ObjectType::CHANNEL.into_raw() }, 2147483648>, fidl::encoding::DefaultFuchsiaResourceDialect, &mut self.value, decoder, offset + 0, _depth)?;
            Ok(())
        }
    }

    impl fidl::encoding::ResourceTypeMarker for ViewHolderToken {
        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 ViewHolderToken {
        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<ViewHolderToken, fidl::encoding::DefaultFuchsiaResourceDialect>
        for &mut ViewHolderToken
    {
        #[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::<ViewHolderToken>(offset);
            // Delegate to tuple encoding.
            fidl::encoding::Encode::<ViewHolderToken, fidl::encoding::DefaultFuchsiaResourceDialect>::encode(
                (
                    <fidl::encoding::HandleType<fidl::EventPair, { fidl::ObjectType::EVENTPAIR.into_raw() }, 2147483648> as fidl::encoding::ResourceTypeMarker>::take_or_borrow(&mut self.value),
                ),
                encoder, offset, _depth
            )
        }
    }
    unsafe impl<
        T0: fidl::encoding::Encode<
                fidl::encoding::HandleType<
                    fidl::EventPair,
                    { fidl::ObjectType::EVENTPAIR.into_raw() },
                    2147483648,
                >,
                fidl::encoding::DefaultFuchsiaResourceDialect,
            >,
    > fidl::encoding::Encode<ViewHolderToken, 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::<ViewHolderToken>(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 ViewHolderToken
    {
        #[inline(always)]
        fn new_empty() -> Self {
            Self {
                value: fidl::new_empty!(fidl::encoding::HandleType<fidl::EventPair, { fidl::ObjectType::EVENTPAIR.into_raw() }, 2147483648>, 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::HandleType<fidl::EventPair, { fidl::ObjectType::EVENTPAIR.into_raw() }, 2147483648>, fidl::encoding::DefaultFuchsiaResourceDialect, &mut self.value, decoder, offset + 0, _depth)?;
            Ok(())
        }
    }

    impl fidl::encoding::ResourceTypeMarker for ViewIdentityOnCreation {
        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 ViewIdentityOnCreation {
        type Owned = Self;

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

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

    unsafe impl
        fidl::encoding::Encode<
            ViewIdentityOnCreation,
            fidl::encoding::DefaultFuchsiaResourceDialect,
        > for &mut ViewIdentityOnCreation
    {
        #[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::<ViewIdentityOnCreation>(offset);
            // Delegate to tuple encoding.
            fidl::encoding::Encode::<
                ViewIdentityOnCreation,
                fidl::encoding::DefaultFuchsiaResourceDialect,
            >::encode(
                (
                    <ViewRef as fidl::encoding::ResourceTypeMarker>::take_or_borrow(
                        &mut self.view_ref,
                    ),
                    <ViewRefControl as fidl::encoding::ResourceTypeMarker>::take_or_borrow(
                        &mut self.view_ref_control,
                    ),
                ),
                encoder,
                offset,
                _depth,
            )
        }
    }
    unsafe impl<
        T0: fidl::encoding::Encode<ViewRef, fidl::encoding::DefaultFuchsiaResourceDialect>,
        T1: fidl::encoding::Encode<ViewRefControl, fidl::encoding::DefaultFuchsiaResourceDialect>,
    >
        fidl::encoding::Encode<
            ViewIdentityOnCreation,
            fidl::encoding::DefaultFuchsiaResourceDialect,
        > for (T0, T1)
    {
        #[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::<ViewIdentityOnCreation>(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)?;
            self.1.encode(encoder, offset + 4, depth)?;
            Ok(())
        }
    }

    impl fidl::encoding::Decode<Self, fidl::encoding::DefaultFuchsiaResourceDialect>
        for ViewIdentityOnCreation
    {
        #[inline(always)]
        fn new_empty() -> Self {
            Self {
                view_ref: fidl::new_empty!(ViewRef, fidl::encoding::DefaultFuchsiaResourceDialect),
                view_ref_control: fidl::new_empty!(
                    ViewRefControl,
                    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!(
                ViewRef,
                fidl::encoding::DefaultFuchsiaResourceDialect,
                &mut self.view_ref,
                decoder,
                offset + 0,
                _depth
            )?;
            fidl::decode!(
                ViewRefControl,
                fidl::encoding::DefaultFuchsiaResourceDialect,
                &mut self.view_ref_control,
                decoder,
                offset + 4,
                _depth
            )?;
            Ok(())
        }
    }

    impl fidl::encoding::ResourceTypeMarker for ViewPresentRequest {
        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 ViewPresentRequest {
        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<ViewPresentRequest, fidl::encoding::DefaultFuchsiaResourceDialect>
        for &mut ViewPresentRequest
    {
        #[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::<ViewPresentRequest>(offset);
            // Delegate to tuple encoding.
            fidl::encoding::Encode::<
                ViewPresentRequest,
                fidl::encoding::DefaultFuchsiaResourceDialect,
            >::encode(
                (<ViewToken as fidl::encoding::ResourceTypeMarker>::take_or_borrow(
                    &mut self.view_token,
                ),),
                encoder,
                offset,
                _depth,
            )
        }
    }
    unsafe impl<
        T0: fidl::encoding::Encode<ViewToken, fidl::encoding::DefaultFuchsiaResourceDialect>,
    > fidl::encoding::Encode<ViewPresentRequest, 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::<ViewPresentRequest>(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 ViewPresentRequest
    {
        #[inline(always)]
        fn new_empty() -> Self {
            Self {
                view_token: fidl::new_empty!(
                    ViewToken,
                    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!(
                ViewToken,
                fidl::encoding::DefaultFuchsiaResourceDialect,
                &mut self.view_token,
                decoder,
                offset + 0,
                _depth
            )?;
            Ok(())
        }
    }

    impl fidl::encoding::ResourceTypeMarker for ViewRef {
        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 ViewRef {
        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<ViewRef, fidl::encoding::DefaultFuchsiaResourceDialect>
        for &mut ViewRef
    {
        #[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::<ViewRef>(offset);
            // Delegate to tuple encoding.
            fidl::encoding::Encode::<ViewRef, fidl::encoding::DefaultFuchsiaResourceDialect>::encode(
                (<fidl::encoding::HandleType<
                    fidl::EventPair,
                    { fidl::ObjectType::EVENTPAIR.into_raw() },
                    2147483648,
                > as fidl::encoding::ResourceTypeMarker>::take_or_borrow(
                    &mut self.reference
                ),),
                encoder,
                offset,
                _depth,
            )
        }
    }
    unsafe impl<
        T0: fidl::encoding::Encode<
                fidl::encoding::HandleType<
                    fidl::EventPair,
                    { fidl::ObjectType::EVENTPAIR.into_raw() },
                    2147483648,
                >,
                fidl::encoding::DefaultFuchsiaResourceDialect,
            >,
    > fidl::encoding::Encode<ViewRef, 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::<ViewRef>(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 ViewRef {
        #[inline(always)]
        fn new_empty() -> Self {
            Self {
                reference: fidl::new_empty!(fidl::encoding::HandleType<fidl::EventPair, { fidl::ObjectType::EVENTPAIR.into_raw() }, 2147483648>, 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::HandleType<fidl::EventPair, { fidl::ObjectType::EVENTPAIR.into_raw() }, 2147483648>, fidl::encoding::DefaultFuchsiaResourceDialect, &mut self.reference, decoder, offset + 0, _depth)?;
            Ok(())
        }
    }

    impl fidl::encoding::ResourceTypeMarker for ViewRefControl {
        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 ViewRefControl {
        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<ViewRefControl, fidl::encoding::DefaultFuchsiaResourceDialect>
        for &mut ViewRefControl
    {
        #[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::<ViewRefControl>(offset);
            // Delegate to tuple encoding.
            fidl::encoding::Encode::<ViewRefControl, fidl::encoding::DefaultFuchsiaResourceDialect>::encode(
                (
                    <fidl::encoding::HandleType<fidl::EventPair, { fidl::ObjectType::EVENTPAIR.into_raw() }, 2147483648> as fidl::encoding::ResourceTypeMarker>::take_or_borrow(&mut self.reference),
                ),
                encoder, offset, _depth
            )
        }
    }
    unsafe impl<
        T0: fidl::encoding::Encode<
                fidl::encoding::HandleType<
                    fidl::EventPair,
                    { fidl::ObjectType::EVENTPAIR.into_raw() },
                    2147483648,
                >,
                fidl::encoding::DefaultFuchsiaResourceDialect,
            >,
    > fidl::encoding::Encode<ViewRefControl, 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::<ViewRefControl>(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 ViewRefControl
    {
        #[inline(always)]
        fn new_empty() -> Self {
            Self {
                reference: fidl::new_empty!(fidl::encoding::HandleType<fidl::EventPair, { fidl::ObjectType::EVENTPAIR.into_raw() }, 2147483648>, 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::HandleType<fidl::EventPair, { fidl::ObjectType::EVENTPAIR.into_raw() }, 2147483648>, fidl::encoding::DefaultFuchsiaResourceDialect, &mut self.reference, decoder, offset + 0, _depth)?;
            Ok(())
        }
    }

    impl fidl::encoding::ResourceTypeMarker for ViewRefInstalledWatchRequest {
        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 ViewRefInstalledWatchRequest {
        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<
            ViewRefInstalledWatchRequest,
            fidl::encoding::DefaultFuchsiaResourceDialect,
        > for &mut ViewRefInstalledWatchRequest
    {
        #[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::<ViewRefInstalledWatchRequest>(offset);
            // Delegate to tuple encoding.
            fidl::encoding::Encode::<
                ViewRefInstalledWatchRequest,
                fidl::encoding::DefaultFuchsiaResourceDialect,
            >::encode(
                (<ViewRef as fidl::encoding::ResourceTypeMarker>::take_or_borrow(
                    &mut self.view_ref,
                ),),
                encoder,
                offset,
                _depth,
            )
        }
    }
    unsafe impl<T0: fidl::encoding::Encode<ViewRef, fidl::encoding::DefaultFuchsiaResourceDialect>>
        fidl::encoding::Encode<
            ViewRefInstalledWatchRequest,
            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::<ViewRefInstalledWatchRequest>(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 ViewRefInstalledWatchRequest
    {
        #[inline(always)]
        fn new_empty() -> Self {
            Self {
                view_ref: fidl::new_empty!(ViewRef, 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!(
                ViewRef,
                fidl::encoding::DefaultFuchsiaResourceDialect,
                &mut self.view_ref,
                decoder,
                offset + 0,
                _depth
            )?;
            Ok(())
        }
    }

    impl fidl::encoding::ResourceTypeMarker for ViewToken {
        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 ViewToken {
        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<ViewToken, fidl::encoding::DefaultFuchsiaResourceDialect>
        for &mut ViewToken
    {
        #[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::<ViewToken>(offset);
            // Delegate to tuple encoding.
            fidl::encoding::Encode::<ViewToken, fidl::encoding::DefaultFuchsiaResourceDialect>::encode(
                (
                    <fidl::encoding::HandleType<fidl::EventPair, { fidl::ObjectType::EVENTPAIR.into_raw() }, 2147483648> as fidl::encoding::ResourceTypeMarker>::take_or_borrow(&mut self.value),
                ),
                encoder, offset, _depth
            )
        }
    }
    unsafe impl<
        T0: fidl::encoding::Encode<
                fidl::encoding::HandleType<
                    fidl::EventPair,
                    { fidl::ObjectType::EVENTPAIR.into_raw() },
                    2147483648,
                >,
                fidl::encoding::DefaultFuchsiaResourceDialect,
            >,
    > fidl::encoding::Encode<ViewToken, 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::<ViewToken>(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 ViewToken {
        #[inline(always)]
        fn new_empty() -> Self {
            Self {
                value: fidl::new_empty!(fidl::encoding::HandleType<fidl::EventPair, { fidl::ObjectType::EVENTPAIR.into_raw() }, 2147483648>, 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::HandleType<fidl::EventPair, { fidl::ObjectType::EVENTPAIR.into_raw() }, 2147483648>, fidl::encoding::DefaultFuchsiaResourceDialect, &mut self.value, decoder, offset + 0, _depth)?;
            Ok(())
        }
    }

    impl fidl::encoding::ResourceTypeMarker for ViewportCreationToken {
        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 ViewportCreationToken {
        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<ViewportCreationToken, fidl::encoding::DefaultFuchsiaResourceDialect>
        for &mut ViewportCreationToken
    {
        #[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::<ViewportCreationToken>(offset);
            // Delegate to tuple encoding.
            fidl::encoding::Encode::<
                ViewportCreationToken,
                fidl::encoding::DefaultFuchsiaResourceDialect,
            >::encode(
                (<fidl::encoding::HandleType<
                    fidl::Channel,
                    { fidl::ObjectType::CHANNEL.into_raw() },
                    2147483648,
                > as fidl::encoding::ResourceTypeMarker>::take_or_borrow(
                    &mut self.value
                ),),
                encoder,
                offset,
                _depth,
            )
        }
    }
    unsafe impl<
        T0: fidl::encoding::Encode<
                fidl::encoding::HandleType<
                    fidl::Channel,
                    { fidl::ObjectType::CHANNEL.into_raw() },
                    2147483648,
                >,
                fidl::encoding::DefaultFuchsiaResourceDialect,
            >,
    >
        fidl::encoding::Encode<ViewportCreationToken, 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::<ViewportCreationToken>(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 ViewportCreationToken
    {
        #[inline(always)]
        fn new_empty() -> Self {
            Self {
                value: fidl::new_empty!(fidl::encoding::HandleType<fidl::Channel, { fidl::ObjectType::CHANNEL.into_raw() }, 2147483648>, 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::HandleType<fidl::Channel, { fidl::ObjectType::CHANNEL.into_raw() }, 2147483648>, fidl::encoding::DefaultFuchsiaResourceDialect, &mut self.value, decoder, offset + 0, _depth)?;
            Ok(())
        }
    }

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

    impl fidl::encoding::ResourceTypeMarker for FocuserSetAutoFocusRequest {
        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 FocuserSetAutoFocusRequest {
        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<
            FocuserSetAutoFocusRequest,
            fidl::encoding::DefaultFuchsiaResourceDialect,
        > for &mut FocuserSetAutoFocusRequest
    {
        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::<FocuserSetAutoFocusRequest>(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::<
                ViewRef,
                fidl::encoding::DefaultFuchsiaResourceDialect,
            >(
                self.view_ref
                    .as_mut()
                    .map(<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 FocuserSetAutoFocusRequest
    {
        #[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 =
                    <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.view_ref.get_or_insert_with(|| {
                    fidl::new_empty!(ViewRef, fidl::encoding::DefaultFuchsiaResourceDialect)
                });
                fidl::decode!(
                    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(())
        }
    }
}