fidl_fuchsia_ui_input_internal/

fidl_fuchsia_ui_input_internal.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_input_internal_common::*;
use futures::future::{self, MaybeDone, TryFutureExt};
use zx_status;

#[derive(Debug, PartialEq)]
pub struct InputOwnershipGetEventRequest {
    pub target: InputOwnershipTarget,
}

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

#[derive(Debug, Eq, Hash, Ord, PartialEq, PartialOrd)]
pub struct InputOwnershipGetEventResponse {
    pub ownership_event: fidl::Event,
}

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

/// Target identity when requesting direct input ownership.
#[derive(Debug)]
pub enum InputOwnershipTarget {
    ViewRef(fidl_fuchsia_ui_views::ViewRef),
    Virtcon(Virtcon),
    Platform(Platform),
    #[doc(hidden)]
    __SourceBreaking {
        unknown_ordinal: u64,
    },
}

/// Pattern that matches an unknown `InputOwnershipTarget` member.
#[macro_export]
macro_rules! InputOwnershipTargetUnknown {
    () => {
        _
    };
}

// Custom PartialEq so that unknown variants are not equal to themselves.
impl PartialEq for InputOwnershipTarget {
    fn eq(&self, other: &Self) -> bool {
        match (self, other) {
            (Self::ViewRef(x), Self::ViewRef(y)) => *x == *y,
            (Self::Virtcon(x), Self::Virtcon(y)) => *x == *y,
            (Self::Platform(x), Self::Platform(y)) => *x == *y,
            _ => false,
        }
    }
}

impl InputOwnershipTarget {
    #[inline]
    pub fn ordinal(&self) -> u64 {
        match *self {
            Self::ViewRef(_) => 1,
            Self::Virtcon(_) => 2,
            Self::Platform(_) => 3,
            Self::__SourceBreaking { unknown_ordinal } => unknown_ordinal,
        }
    }

    #[inline]
    pub fn unknown_variant_for_testing() -> Self {
        Self::__SourceBreaking { unknown_ordinal: 0 }
    }

    #[inline]
    pub fn is_unknown(&self) -> bool {
        match self {
            Self::__SourceBreaking { .. } => true,
            _ => false,
        }
    }
}

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

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

impl fidl::endpoints::ProtocolMarker for InputOwnershipMarker {
    type Proxy = InputOwnershipProxy;
    type RequestStream = InputOwnershipRequestStream;
    #[cfg(target_os = "fuchsia")]
    type SynchronousProxy = InputOwnershipSynchronousProxy;

    const DEBUG_NAME: &'static str = "fuchsia.ui.input.internal.InputOwnership";
}
impl fidl::endpoints::DiscoverableProtocolMarker for InputOwnershipMarker {}
pub type InputOwnershipGetEventResult = Result<fidl::Event, InputOwnershipError>;

pub trait InputOwnershipProxyInterface: Send + Sync {
    type GetEventResponseFut: std::future::Future<Output = Result<InputOwnershipGetEventResult, fidl::Error>>
        + Send;
    fn r#get_event(&self, target: InputOwnershipTarget) -> Self::GetEventResponseFut;
}
#[derive(Debug)]
#[cfg(target_os = "fuchsia")]
pub struct InputOwnershipSynchronousProxy {
    client: fidl::client::sync::Client,
}

#[cfg(target_os = "fuchsia")]
impl fidl::endpoints::SynchronousProxy for InputOwnershipSynchronousProxy {
    type Proxy = InputOwnershipProxy;
    type Protocol = InputOwnershipMarker;

    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 InputOwnershipSynchronousProxy {
    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<InputOwnershipEvent, fidl::Error> {
        InputOwnershipEvent::decode(self.client.wait_for_event::<InputOwnershipMarker>(deadline)?)
    }

    /// Gets a duplicate handle to the shared kernel `ownership_event` whose
    /// orthogonal signals inform clients and the system pipeline when direct
    /// driver input access (`fuchsia.input.report.Service`) is granted or revoked:
    ///
    /// - `Virtcon` (`target` = `virtcon: {}`): owns input iff
    ///   `InputOwnershipSignal.DISPLAY_UNOWNED` is asserted.
    /// - `Starnix` (`target` = `view_ref`): owns direct input iff both
    ///   `InputOwnershipSignal.DISPLAY_PLATFORM_OWNED` and
    ///   `InputOwnershipSignal.INPUT_CLIENT_OWNED` are asserted.
    /// - `SceneManager` (`target` = `platform: {}`): owns platform pipeline
    ///   input iff both `InputOwnershipSignal.DISPLAY_PLATFORM_OWNED` and
    ///   `InputOwnershipSignal.INPUT_PLATFORM_OWNED` are asserted (pauses whenever
    ///   `DISPLAY_UNOWNED` or `INPUT_CLIENT_OWNED` is asserted).
    ///
    /// Requesting direct input ownership:
    ///
    /// Calling `GetEvent` with `target` = `view_ref` is also how a view requests
    /// direct input ownership; there is no separate request method. `GetEvent`
    /// supports pre-registering a valid `ViewRef` before the view is created or
    /// attached to the `ViewTree`. On success, the server registers the `ViewRef`
    /// as the system-wide direct input client, immediately evaluates it against
    /// the latest `ViewTree` snapshot if one exists, and continues evaluating it
    /// against the single-view + full-screen criteria on every subsequent `ViewTree`
    /// update. `INPUT_CLIENT_OWNED` is asserted only while the registered view
    /// meets those criteria; otherwise `INPUT_PLATFORM_OWNED` is asserted.
    ///
    /// - Registration is singleton and last-writer-wins: a successful call with
    ///   a different `ViewRef` replaces any previously registered view. This
    ///   mechanism is intended for a single trusted client replacing its own view
    ///   rather than independent concurrent components: because every `GetEvent`
    ///   call returns a handle to the same shared kernel `ownership_event`, replacing
    ///   the registered `ViewRef` does not silence earlier callers' handles when
    ///   their view is unlinked or destroyed and the new view goes fullscreen.
    /// - If the `ViewTree` contains more than one view or overlay competing
    ///   with the registered view, the criteria are not met and ownership
    ///   falls back to the platform. Thus, when multiple views request direct
    ///   input while coexisting in the `ViewTree`, none of them is granted
    ///   direct input, regardless of which one registered last.
    /// - Registration is tied to the lifetime of the view, not to this
    ///   channel or the returned event. Unlinking the view from the `ViewTree`
    ///   (placing it in `unconnected_views`) reverts ownership to
    ///   `INPUT_PLATFORM_OWNED` while retaining the registration, so re-linking
    ///   fullscreen restores `INPUT_CLIENT_OWNED`. Destroying the view permanently
    ///   drops the registration, at which point ownership reverts to the platform.
    /// - Calls with `virtcon: {}` or `platform: {}` only observe ownership and
    ///   do not modify the registered direct client.
    ///
    /// If `target` is set to an unsupported or unknown variant, the call
    /// returns `InputOwnershipError.INVALID_TARGET`.
    pub fn r#get_event(
        &self,
        mut target: InputOwnershipTarget,
        ___deadline: zx::MonotonicInstant,
    ) -> Result<InputOwnershipGetEventResult, fidl::Error> {
        let _response =
            self.client.send_query::<InputOwnershipGetEventRequest, fidl::encoding::ResultType<
                InputOwnershipGetEventResponse,
                InputOwnershipError,
            >, InputOwnershipMarker>(
                (&mut target,),
                0x486e6eebf1f00657,
                fidl::encoding::DynamicFlags::empty(),
                ___deadline,
            )?;
        Ok(_response.map(|x| x.ownership_event))
    }
}

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

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

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

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

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

impl fidl::endpoints::Proxy for InputOwnershipProxy {
    type Protocol = InputOwnershipMarker;

    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 InputOwnershipProxy {
    /// Create a new Proxy for fuchsia.ui.input.internal/InputOwnership.
    pub fn new(channel: ::fidl::AsyncChannel) -> Self {
        let protocol_name = <InputOwnershipMarker 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) -> InputOwnershipEventStream {
        InputOwnershipEventStream { event_receiver: self.client.take_event_receiver() }
    }

    /// Gets a duplicate handle to the shared kernel `ownership_event` whose
    /// orthogonal signals inform clients and the system pipeline when direct
    /// driver input access (`fuchsia.input.report.Service`) is granted or revoked:
    ///
    /// - `Virtcon` (`target` = `virtcon: {}`): owns input iff
    ///   `InputOwnershipSignal.DISPLAY_UNOWNED` is asserted.
    /// - `Starnix` (`target` = `view_ref`): owns direct input iff both
    ///   `InputOwnershipSignal.DISPLAY_PLATFORM_OWNED` and
    ///   `InputOwnershipSignal.INPUT_CLIENT_OWNED` are asserted.
    /// - `SceneManager` (`target` = `platform: {}`): owns platform pipeline
    ///   input iff both `InputOwnershipSignal.DISPLAY_PLATFORM_OWNED` and
    ///   `InputOwnershipSignal.INPUT_PLATFORM_OWNED` are asserted (pauses whenever
    ///   `DISPLAY_UNOWNED` or `INPUT_CLIENT_OWNED` is asserted).
    ///
    /// Requesting direct input ownership:
    ///
    /// Calling `GetEvent` with `target` = `view_ref` is also how a view requests
    /// direct input ownership; there is no separate request method. `GetEvent`
    /// supports pre-registering a valid `ViewRef` before the view is created or
    /// attached to the `ViewTree`. On success, the server registers the `ViewRef`
    /// as the system-wide direct input client, immediately evaluates it against
    /// the latest `ViewTree` snapshot if one exists, and continues evaluating it
    /// against the single-view + full-screen criteria on every subsequent `ViewTree`
    /// update. `INPUT_CLIENT_OWNED` is asserted only while the registered view
    /// meets those criteria; otherwise `INPUT_PLATFORM_OWNED` is asserted.
    ///
    /// - Registration is singleton and last-writer-wins: a successful call with
    ///   a different `ViewRef` replaces any previously registered view. This
    ///   mechanism is intended for a single trusted client replacing its own view
    ///   rather than independent concurrent components: because every `GetEvent`
    ///   call returns a handle to the same shared kernel `ownership_event`, replacing
    ///   the registered `ViewRef` does not silence earlier callers' handles when
    ///   their view is unlinked or destroyed and the new view goes fullscreen.
    /// - If the `ViewTree` contains more than one view or overlay competing
    ///   with the registered view, the criteria are not met and ownership
    ///   falls back to the platform. Thus, when multiple views request direct
    ///   input while coexisting in the `ViewTree`, none of them is granted
    ///   direct input, regardless of which one registered last.
    /// - Registration is tied to the lifetime of the view, not to this
    ///   channel or the returned event. Unlinking the view from the `ViewTree`
    ///   (placing it in `unconnected_views`) reverts ownership to
    ///   `INPUT_PLATFORM_OWNED` while retaining the registration, so re-linking
    ///   fullscreen restores `INPUT_CLIENT_OWNED`. Destroying the view permanently
    ///   drops the registration, at which point ownership reverts to the platform.
    /// - Calls with `virtcon: {}` or `platform: {}` only observe ownership and
    ///   do not modify the registered direct client.
    ///
    /// If `target` is set to an unsupported or unknown variant, the call
    /// returns `InputOwnershipError.INVALID_TARGET`.
    pub fn r#get_event(
        &self,
        mut target: InputOwnershipTarget,
    ) -> fidl::client::QueryResponseFut<
        InputOwnershipGetEventResult,
        fidl::encoding::DefaultFuchsiaResourceDialect,
    > {
        InputOwnershipProxyInterface::r#get_event(self, target)
    }
}

impl InputOwnershipProxyInterface for InputOwnershipProxy {
    type GetEventResponseFut = fidl::client::QueryResponseFut<
        InputOwnershipGetEventResult,
        fidl::encoding::DefaultFuchsiaResourceDialect,
    >;
    fn r#get_event(&self, mut target: InputOwnershipTarget) -> Self::GetEventResponseFut {
        fn _decode(
            mut _buf: Result<<fidl::encoding::DefaultFuchsiaResourceDialect as fidl::encoding::ResourceDialect>::MessageBufEtc, fidl::Error>,
        ) -> Result<InputOwnershipGetEventResult, fidl::Error> {
            let _response = fidl::client::decode_transaction_body::<
                fidl::encoding::ResultType<InputOwnershipGetEventResponse, InputOwnershipError>,
                fidl::encoding::DefaultFuchsiaResourceDialect,
                0x486e6eebf1f00657,
            >(_buf?)?;
            Ok(_response.map(|x| x.ownership_event))
        }
        self.client
            .send_query_and_decode::<InputOwnershipGetEventRequest, InputOwnershipGetEventResult>(
                (&mut target,),
                0x486e6eebf1f00657,
                fidl::encoding::DynamicFlags::empty(),
                _decode,
            )
    }
}

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

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

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

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

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

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

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

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

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

impl fidl::endpoints::RequestStream for InputOwnershipRequestStream {
    type Protocol = InputOwnershipMarker;
    type ControlHandle = InputOwnershipControlHandle;

    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 {
        InputOwnershipControlHandle { 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 InputOwnershipRequestStream {
    type Item = Result<InputOwnershipRequest, 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 InputOwnershipRequestStream 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 {
                    0x486e6eebf1f00657 => {
                        header.validate_request_tx_id(fidl::MethodType::TwoWay)?;
                        let mut req = fidl::new_empty!(
                            InputOwnershipGetEventRequest,
                            fidl::encoding::DefaultFuchsiaResourceDialect
                        );
                        fidl::encoding::Decoder::<fidl::encoding::DefaultFuchsiaResourceDialect>::decode_into::<InputOwnershipGetEventRequest>(&header, _body_bytes, handles, &mut req)?;
                        let control_handle =
                            InputOwnershipControlHandle { inner: this.inner.clone() };
                        Ok(InputOwnershipRequest::GetEvent {
                            target: req.target,

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

/// Get information about ownership of input (replaces `DisplayOwnership`).
///
/// By default, user input is handled by the platform input pipeline
/// (`SceneManager`) and delivered to applications via standard UI protocols
/// (e.g. `fuchsia.ui.pointer.TouchSource`).
///
/// Low-level components (such as Starnix or Virtcon) that require direct access
/// to hardware input devices via `fuchsia.input.report.Service` must observe this
/// event to pause or resume reading from direct driver streams, preventing
/// duplicate processing or input leakage.
///
/// This protocol intentionally assumes a system-wide singleton direct-client
/// model where only one direct client or the platform pipeline consumes input
/// at any given time.
///
/// During ownership transitions (e.g. switching display ownership or view
/// focus), an intermediate state may occur where neither the direct client nor
/// the platform pipeline owns input. During any unowned or transition state, all
/// consumers (both direct clients and the platform pipeline) must pause reading
/// and processing hardware input reports until their respective ownership signal
/// is asserted.
///
/// Security note:
/// A `ViewRef` is a duplicable identity token rather than proof of view ownership,
/// and any caller with access to this protocol can replace the registered `ViewRef`.
/// Therefore, `InputOwnership` must only be routed to trusted system components.
#[derive(Debug)]
pub enum InputOwnershipRequest {
    /// Gets a duplicate handle to the shared kernel `ownership_event` whose
    /// orthogonal signals inform clients and the system pipeline when direct
    /// driver input access (`fuchsia.input.report.Service`) is granted or revoked:
    ///
    /// - `Virtcon` (`target` = `virtcon: {}`): owns input iff
    ///   `InputOwnershipSignal.DISPLAY_UNOWNED` is asserted.
    /// - `Starnix` (`target` = `view_ref`): owns direct input iff both
    ///   `InputOwnershipSignal.DISPLAY_PLATFORM_OWNED` and
    ///   `InputOwnershipSignal.INPUT_CLIENT_OWNED` are asserted.
    /// - `SceneManager` (`target` = `platform: {}`): owns platform pipeline
    ///   input iff both `InputOwnershipSignal.DISPLAY_PLATFORM_OWNED` and
    ///   `InputOwnershipSignal.INPUT_PLATFORM_OWNED` are asserted (pauses whenever
    ///   `DISPLAY_UNOWNED` or `INPUT_CLIENT_OWNED` is asserted).
    ///
    /// Requesting direct input ownership:
    ///
    /// Calling `GetEvent` with `target` = `view_ref` is also how a view requests
    /// direct input ownership; there is no separate request method. `GetEvent`
    /// supports pre-registering a valid `ViewRef` before the view is created or
    /// attached to the `ViewTree`. On success, the server registers the `ViewRef`
    /// as the system-wide direct input client, immediately evaluates it against
    /// the latest `ViewTree` snapshot if one exists, and continues evaluating it
    /// against the single-view + full-screen criteria on every subsequent `ViewTree`
    /// update. `INPUT_CLIENT_OWNED` is asserted only while the registered view
    /// meets those criteria; otherwise `INPUT_PLATFORM_OWNED` is asserted.
    ///
    /// - Registration is singleton and last-writer-wins: a successful call with
    ///   a different `ViewRef` replaces any previously registered view. This
    ///   mechanism is intended for a single trusted client replacing its own view
    ///   rather than independent concurrent components: because every `GetEvent`
    ///   call returns a handle to the same shared kernel `ownership_event`, replacing
    ///   the registered `ViewRef` does not silence earlier callers' handles when
    ///   their view is unlinked or destroyed and the new view goes fullscreen.
    /// - If the `ViewTree` contains more than one view or overlay competing
    ///   with the registered view, the criteria are not met and ownership
    ///   falls back to the platform. Thus, when multiple views request direct
    ///   input while coexisting in the `ViewTree`, none of them is granted
    ///   direct input, regardless of which one registered last.
    /// - Registration is tied to the lifetime of the view, not to this
    ///   channel or the returned event. Unlinking the view from the `ViewTree`
    ///   (placing it in `unconnected_views`) reverts ownership to
    ///   `INPUT_PLATFORM_OWNED` while retaining the registration, so re-linking
    ///   fullscreen restores `INPUT_CLIENT_OWNED`. Destroying the view permanently
    ///   drops the registration, at which point ownership reverts to the platform.
    /// - Calls with `virtcon: {}` or `platform: {}` only observe ownership and
    ///   do not modify the registered direct client.
    ///
    /// If `target` is set to an unsupported or unknown variant, the call
    /// returns `InputOwnershipError.INVALID_TARGET`.
    GetEvent { target: InputOwnershipTarget, responder: InputOwnershipGetEventResponder },
}

impl InputOwnershipRequest {
    #[allow(irrefutable_let_patterns)]
    pub fn into_get_event(self) -> Option<(InputOwnershipTarget, InputOwnershipGetEventResponder)> {
        if let InputOwnershipRequest::GetEvent { target, responder } = self {
            Some((target, responder))
        } else {
            None
        }
    }

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

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

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

impl fidl::endpoints::ControlHandle for InputOwnershipControlHandle {
    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 InputOwnershipControlHandle {}

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

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

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

    fn send_raw(
        &self,
        mut result: Result<fidl::Event, InputOwnershipError>,
    ) -> Result<(), fidl::Error> {
        self.control_handle.inner.send::<fidl::encoding::ResultType<
            InputOwnershipGetEventResponse,
            InputOwnershipError,
        >>(
            result.map(|ownership_event| (ownership_event,)),
            self.tx_id,
            0x486e6eebf1f00657,
            fidl::encoding::DynamicFlags::empty(),
        )
    }
}

mod internal {
    use super::*;

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

    impl fidl::encoding::ResourceTypeMarker for InputOwnershipGetEventResponse {
        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 InputOwnershipGetEventResponse {
        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<
            InputOwnershipGetEventResponse,
            fidl::encoding::DefaultFuchsiaResourceDialect,
        > for &mut InputOwnershipGetEventResponse
    {
        #[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::<InputOwnershipGetEventResponse>(offset);
            // Delegate to tuple encoding.
            fidl::encoding::Encode::<
                InputOwnershipGetEventResponse,
                fidl::encoding::DefaultFuchsiaResourceDialect,
            >::encode(
                (<fidl::encoding::HandleType<
                    fidl::Event,
                    { fidl::ObjectType::EVENT.into_raw() },
                    49155,
                > as fidl::encoding::ResourceTypeMarker>::take_or_borrow(
                    &mut self.ownership_event,
                ),),
                encoder,
                offset,
                _depth,
            )
        }
    }
    unsafe impl<
        T0: fidl::encoding::Encode<
                fidl::encoding::HandleType<
                    fidl::Event,
                    { fidl::ObjectType::EVENT.into_raw() },
                    49155,
                >,
                fidl::encoding::DefaultFuchsiaResourceDialect,
            >,
    >
        fidl::encoding::Encode<
            InputOwnershipGetEventResponse,
            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::<InputOwnershipGetEventResponse>(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 InputOwnershipGetEventResponse
    {
        #[inline(always)]
        fn new_empty() -> Self {
            Self {
                ownership_event: fidl::new_empty!(fidl::encoding::HandleType<fidl::Event, { fidl::ObjectType::EVENT.into_raw() }, 49155>, 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::Event, { fidl::ObjectType::EVENT.into_raw() }, 49155>, fidl::encoding::DefaultFuchsiaResourceDialect, &mut self.ownership_event, decoder, offset + 0, _depth)?;
            Ok(())
        }
    }

    impl fidl::encoding::ResourceTypeMarker for InputOwnershipTarget {
        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 InputOwnershipTarget {
        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<InputOwnershipTarget, fidl::encoding::DefaultFuchsiaResourceDialect>
        for &mut InputOwnershipTarget
    {
        #[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::<InputOwnershipTarget>(offset);
            encoder.write_num::<u64>(self.ordinal(), offset);
            match self {
            InputOwnershipTarget::ViewRef(ref mut val) => {
                fidl::encoding::encode_in_envelope::<fidl_fuchsia_ui_views::ViewRef, fidl::encoding::DefaultFuchsiaResourceDialect>(
                    <fidl_fuchsia_ui_views::ViewRef as fidl::encoding::ResourceTypeMarker>::take_or_borrow(val),
                    encoder, offset + 8, _depth
                )
            }
            InputOwnershipTarget::Virtcon(ref val) => {
                fidl::encoding::encode_in_envelope::<Virtcon, fidl::encoding::DefaultFuchsiaResourceDialect>(
                    <Virtcon as fidl::encoding::ValueTypeMarker>::borrow(val),
                    encoder, offset + 8, _depth
                )
            }
            InputOwnershipTarget::Platform(ref val) => {
                fidl::encoding::encode_in_envelope::<Platform, fidl::encoding::DefaultFuchsiaResourceDialect>(
                    <Platform as fidl::encoding::ValueTypeMarker>::borrow(val),
                    encoder, offset + 8, _depth
                )
            }
            InputOwnershipTarget::__SourceBreaking { .. } => Err(fidl::Error::UnknownUnionTag),
        }
        }
    }

    impl fidl::encoding::Decode<Self, fidl::encoding::DefaultFuchsiaResourceDialect>
        for InputOwnershipTarget
    {
        #[inline(always)]
        fn new_empty() -> Self {
            Self::__SourceBreaking { unknown_ordinal: 0 }
        }

        #[inline]
        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);
            #[allow(unused_variables)]
            let next_out_of_line = decoder.next_out_of_line();
            let handles_before = decoder.remaining_handles();
            let (ordinal, inlined, num_bytes, num_handles) =
                fidl::encoding::decode_union_inline_portion(decoder, offset)?;

            let member_inline_size = match ordinal {
                1 => <fidl_fuchsia_ui_views::ViewRef as fidl::encoding::TypeMarker>::inline_size(
                    decoder.context,
                ),
                2 => <Virtcon as fidl::encoding::TypeMarker>::inline_size(decoder.context),
                3 => <Platform as fidl::encoding::TypeMarker>::inline_size(decoder.context),
                0 => return Err(fidl::Error::UnknownUnionTag),
                _ => num_bytes as usize,
            };

            if inlined != (member_inline_size <= 4) {
                return Err(fidl::Error::InvalidInlineBitInEnvelope);
            }
            let _inner_offset;
            if inlined {
                decoder.check_inline_envelope_padding(offset + 8, member_inline_size)?;
                _inner_offset = offset + 8;
            } else {
                depth.increment()?;
                _inner_offset = decoder.out_of_line_offset(member_inline_size)?;
            }
            match ordinal {
                1 => {
                    #[allow(irrefutable_let_patterns)]
                    if let InputOwnershipTarget::ViewRef(_) = self {
                        // Do nothing, read the value into the object
                    } else {
                        // Initialize `self` to the right variant
                        *self = InputOwnershipTarget::ViewRef(fidl::new_empty!(
                            fidl_fuchsia_ui_views::ViewRef,
                            fidl::encoding::DefaultFuchsiaResourceDialect
                        ));
                    }
                    #[allow(irrefutable_let_patterns)]
                    if let InputOwnershipTarget::ViewRef(ref mut val) = self {
                        fidl::decode!(
                            fidl_fuchsia_ui_views::ViewRef,
                            fidl::encoding::DefaultFuchsiaResourceDialect,
                            val,
                            decoder,
                            _inner_offset,
                            depth
                        )?;
                    } else {
                        unreachable!()
                    }
                }
                2 => {
                    #[allow(irrefutable_let_patterns)]
                    if let InputOwnershipTarget::Virtcon(_) = self {
                        // Do nothing, read the value into the object
                    } else {
                        // Initialize `self` to the right variant
                        *self = InputOwnershipTarget::Virtcon(fidl::new_empty!(
                            Virtcon,
                            fidl::encoding::DefaultFuchsiaResourceDialect
                        ));
                    }
                    #[allow(irrefutable_let_patterns)]
                    if let InputOwnershipTarget::Virtcon(ref mut val) = self {
                        fidl::decode!(
                            Virtcon,
                            fidl::encoding::DefaultFuchsiaResourceDialect,
                            val,
                            decoder,
                            _inner_offset,
                            depth
                        )?;
                    } else {
                        unreachable!()
                    }
                }
                3 => {
                    #[allow(irrefutable_let_patterns)]
                    if let InputOwnershipTarget::Platform(_) = self {
                        // Do nothing, read the value into the object
                    } else {
                        // Initialize `self` to the right variant
                        *self = InputOwnershipTarget::Platform(fidl::new_empty!(
                            Platform,
                            fidl::encoding::DefaultFuchsiaResourceDialect
                        ));
                    }
                    #[allow(irrefutable_let_patterns)]
                    if let InputOwnershipTarget::Platform(ref mut val) = self {
                        fidl::decode!(
                            Platform,
                            fidl::encoding::DefaultFuchsiaResourceDialect,
                            val,
                            decoder,
                            _inner_offset,
                            depth
                        )?;
                    } else {
                        unreachable!()
                    }
                }
                #[allow(deprecated)]
                ordinal => {
                    for _ in 0..num_handles {
                        decoder.drop_next_handle()?;
                    }
                    *self = InputOwnershipTarget::__SourceBreaking { unknown_ordinal: ordinal };
                }
            }
            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);
            }
            Ok(())
        }
    }
}