fidl_fuchsia_ui_pointer/

fidl_fuchsia_ui_pointer.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_pointer_common::*;
use futures::future::{self, MaybeDone, TryFutureExt};
use zx_status;

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

impl fidl::endpoints::ProtocolMarker for MouseSourceMarker {
    type Proxy = MouseSourceProxy;
    type RequestStream = MouseSourceRequestStream;
    #[cfg(target_os = "fuchsia")]
    type SynchronousProxy = MouseSourceSynchronousProxy;

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

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

#[cfg(target_os = "fuchsia")]
impl fidl::endpoints::SynchronousProxy for MouseSourceSynchronousProxy {
    type Proxy = MouseSourceProxy;
    type Protocol = MouseSourceMarker;

    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 MouseSourceSynchronousProxy {
    pub fn new(channel: fidl::Channel) -> Self {
        let protocol_name = <MouseSourceMarker as fidl::endpoints::ProtocolMarker>::DEBUG_NAME;
        Self { client: fidl::client::sync::Client::new(channel, protocol_name) }
    }

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

    /// Waits until an event arrives and returns it. It is safe for other
    /// threads to make concurrent requests while waiting for an event.
    pub fn wait_for_event(
        &self,
        deadline: zx::MonotonicInstant,
    ) -> Result<MouseSourceEvent, fidl::Error> {
        MouseSourceEvent::decode(self.client.wait_for_event(deadline)?)
    }

    /// A method for a client to receive mouse pointer events.
    ///
    /// This call is formulated as a "hanging get" pattern: the client asks for
    /// a set of recent events, and receives them via the callback. This
    /// pull-based approach ensures that clients consume events at their own
    /// pace; events don't clog up the channel in an unbounded manner.
    ///
    /// Flow control. The caller is allowed at most one in-flight |Watch| call
    /// at a time; it is a logical error to have concurrent calls to |Watch|.
    /// Non-compliance results in channel closure.
    ///
    /// Client pacing. The server will dispatch events to the caller on a FIFO,
    /// lossless, best-effort basis, but the caller must allocate enough time to
    /// keep up with new events.
    ///
    /// Event times. The timestamps on each event in the event vector are *not*
    /// guaranteed monotonic; events from different devices may be injected into
    /// Scenic at different times. Generally, events from a single device are
    /// expected to have monotonically increasing timestamps.
    ///
    /// View parameters. Occasionally, changes in view or viewport require
    /// notifying the client. If a |MouseEvent| carries |ViewParameters|, these
    /// parameters apply to successive |MousePointerSample|s until the next
    /// |ViewParameters|.
    pub fn r#watch(
        &self,
        ___deadline: zx::MonotonicInstant,
    ) -> Result<Vec<MouseEvent>, fidl::Error> {
        let _response =
            self.client.send_query::<fidl::encoding::EmptyPayload, MouseSourceWatchResponse>(
                (),
                0x5b1f6e917ac1abb4,
                fidl::encoding::DynamicFlags::empty(),
                ___deadline,
            )?;
        Ok(_response.events)
    }
}

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

impl fidl::endpoints::Proxy for MouseSourceProxy {
    type Protocol = MouseSourceMarker;

    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 MouseSourceProxy {
    /// Create a new Proxy for fuchsia.ui.pointer/MouseSource.
    pub fn new(channel: ::fidl::AsyncChannel) -> Self {
        let protocol_name = <MouseSourceMarker 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) -> MouseSourceEventStream {
        MouseSourceEventStream { event_receiver: self.client.take_event_receiver() }
    }

    /// A method for a client to receive mouse pointer events.
    ///
    /// This call is formulated as a "hanging get" pattern: the client asks for
    /// a set of recent events, and receives them via the callback. This
    /// pull-based approach ensures that clients consume events at their own
    /// pace; events don't clog up the channel in an unbounded manner.
    ///
    /// Flow control. The caller is allowed at most one in-flight |Watch| call
    /// at a time; it is a logical error to have concurrent calls to |Watch|.
    /// Non-compliance results in channel closure.
    ///
    /// Client pacing. The server will dispatch events to the caller on a FIFO,
    /// lossless, best-effort basis, but the caller must allocate enough time to
    /// keep up with new events.
    ///
    /// Event times. The timestamps on each event in the event vector are *not*
    /// guaranteed monotonic; events from different devices may be injected into
    /// Scenic at different times. Generally, events from a single device are
    /// expected to have monotonically increasing timestamps.
    ///
    /// View parameters. Occasionally, changes in view or viewport require
    /// notifying the client. If a |MouseEvent| carries |ViewParameters|, these
    /// parameters apply to successive |MousePointerSample|s until the next
    /// |ViewParameters|.
    pub fn r#watch(
        &self,
    ) -> fidl::client::QueryResponseFut<
        Vec<MouseEvent>,
        fidl::encoding::DefaultFuchsiaResourceDialect,
    > {
        MouseSourceProxyInterface::r#watch(self)
    }
}

impl MouseSourceProxyInterface for MouseSourceProxy {
    type WatchResponseFut = fidl::client::QueryResponseFut<
        Vec<MouseEvent>,
        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<Vec<MouseEvent>, fidl::Error> {
            let _response = fidl::client::decode_transaction_body::<
                MouseSourceWatchResponse,
                fidl::encoding::DefaultFuchsiaResourceDialect,
                0x5b1f6e917ac1abb4,
            >(_buf?)?;
            Ok(_response.events)
        }
        self.client.send_query_and_decode::<fidl::encoding::EmptyPayload, Vec<MouseEvent>>(
            (),
            0x5b1f6e917ac1abb4,
            fidl::encoding::DynamicFlags::empty(),
            _decode,
        )
    }
}

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

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

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

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

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

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

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

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

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

impl fidl::endpoints::RequestStream for MouseSourceRequestStream {
    type Protocol = MouseSourceMarker;
    type ControlHandle = MouseSourceControlHandle;

    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 {
        MouseSourceControlHandle { 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 MouseSourceRequestStream {
    type Item = Result<MouseSourceRequest, 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 MouseSourceRequestStream 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 {
                    0x5b1f6e917ac1abb4 => {
                        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 = MouseSourceControlHandle { inner: this.inner.clone() };
                        Ok(MouseSourceRequest::Watch {
                            responder: MouseSourceWatchResponder {
                                control_handle: std::mem::ManuallyDrop::new(control_handle),
                                tx_id: header.tx_id,
                            },
                        })
                    }
                    _ => Err(fidl::Error::UnknownOrdinal {
                        ordinal: header.ordinal,
                        protocol_name:
                            <MouseSourceMarker as fidl::endpoints::ProtocolMarker>::DEBUG_NAME,
                    }),
                }))
            },
        )
    }
}

/// A method for a client to receive mouse pointer events.
///
/// The position of a pointer event is defined in the context of a viewport,
/// situated in the view. The dimensions of the view and viewport, and their
/// spatial relationship (defined with a transform matrix), are supplied
/// synchronously in a |ViewParameter| table. A view may retrieve a pointer's
/// position in its local coordinate system by applying the viewport-to-view
/// transform matrix.
///
/// The viewport is embedded in an independent and stable coordinate system,
/// suitable for interpreting pointer events in a scale-independent manner;
/// mouse movement will be observed at a constant scale, even under effects such
/// as magnification or panning. However, other effects, such as enlargening the
/// view's clip bounds, may trigger a change in the viewport extents.
#[derive(Debug)]
pub enum MouseSourceRequest {
    /// A method for a client to receive mouse pointer events.
    ///
    /// This call is formulated as a "hanging get" pattern: the client asks for
    /// a set of recent events, and receives them via the callback. This
    /// pull-based approach ensures that clients consume events at their own
    /// pace; events don't clog up the channel in an unbounded manner.
    ///
    /// Flow control. The caller is allowed at most one in-flight |Watch| call
    /// at a time; it is a logical error to have concurrent calls to |Watch|.
    /// Non-compliance results in channel closure.
    ///
    /// Client pacing. The server will dispatch events to the caller on a FIFO,
    /// lossless, best-effort basis, but the caller must allocate enough time to
    /// keep up with new events.
    ///
    /// Event times. The timestamps on each event in the event vector are *not*
    /// guaranteed monotonic; events from different devices may be injected into
    /// Scenic at different times. Generally, events from a single device are
    /// expected to have monotonically increasing timestamps.
    ///
    /// View parameters. Occasionally, changes in view or viewport require
    /// notifying the client. If a |MouseEvent| carries |ViewParameters|, these
    /// parameters apply to successive |MousePointerSample|s until the next
    /// |ViewParameters|.
    Watch { responder: MouseSourceWatchResponder },
}

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

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

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

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

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

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

impl MouseSourceControlHandle {}

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

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

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

    fn send_raw(&self, mut events: &[MouseEvent]) -> Result<(), fidl::Error> {
        self.control_handle.inner.send::<MouseSourceWatchResponse>(
            (events,),
            self.tx_id,
            0x5b1f6e917ac1abb4,
            fidl::encoding::DynamicFlags::empty(),
        )
    }
}

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

impl fidl::endpoints::ProtocolMarker for TouchSourceMarker {
    type Proxy = TouchSourceProxy;
    type RequestStream = TouchSourceRequestStream;
    #[cfg(target_os = "fuchsia")]
    type SynchronousProxy = TouchSourceSynchronousProxy;

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

pub trait TouchSourceProxyInterface: Send + Sync {
    type WatchResponseFut: std::future::Future<Output = Result<Vec<TouchEvent>, fidl::Error>> + Send;
    fn r#watch(&self, responses: &[TouchResponse]) -> Self::WatchResponseFut;
    type UpdateResponseResponseFut: std::future::Future<Output = Result<(), fidl::Error>> + Send;
    fn r#update_response(
        &self,
        interaction: &TouchInteractionId,
        response: &TouchResponse,
    ) -> Self::UpdateResponseResponseFut;
}
#[derive(Debug)]
#[cfg(target_os = "fuchsia")]
pub struct TouchSourceSynchronousProxy {
    client: fidl::client::sync::Client,
}

#[cfg(target_os = "fuchsia")]
impl fidl::endpoints::SynchronousProxy for TouchSourceSynchronousProxy {
    type Proxy = TouchSourceProxy;
    type Protocol = TouchSourceMarker;

    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 TouchSourceSynchronousProxy {
    pub fn new(channel: fidl::Channel) -> Self {
        let protocol_name = <TouchSourceMarker as fidl::endpoints::ProtocolMarker>::DEBUG_NAME;
        Self { client: fidl::client::sync::Client::new(channel, protocol_name) }
    }

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

    /// Waits until an event arrives and returns it. It is safe for other
    /// threads to make concurrent requests while waiting for an event.
    pub fn wait_for_event(
        &self,
        deadline: zx::MonotonicInstant,
    ) -> Result<TouchSourceEvent, fidl::Error> {
        TouchSourceEvent::decode(self.client.wait_for_event(deadline)?)
    }

    /// A method for a client to receive touch pointer events.
    ///
    /// This call is formulated as a "hanging get" pattern: the client asks for
    /// a set of recent events, and receives them via the callback. This
    /// pull-based approach ensures that clients consume events at their own
    /// pace; events don't clog up the channel in an unbounded manner.
    ///
    /// Flow control. The caller is allowed at most one in-flight |Watch| call
    /// at a time; it is a logical error to have concurrent calls to |Watch|.
    /// Non-compliance results in channel closure.
    ///
    /// Client pacing. The server will dispatch events to the caller on a FIFO,
    /// lossless, best-effort basis, but the caller must allocate enough time to
    /// keep up with new events. An unresponsive client may be categorized as
    /// "App Not Responding" and targeted for channel closure.
    ///
    /// Responses. The gesture disambiguation scheme relies on the server
    /// receiving a |TouchResponse| for each |TouchEvent|.|TouchPointerSample|;
    /// non-sample events should return an empty |TouchResponse| table to the
    /// server. Responses for *previous* events are fed to the server on the
    /// *next* call of |Watch| [1]. Each element in the |responses| vector is
    /// interpreted as the pairwise response to the event in the previous
    /// |events| vector; the vector lengths must match. Note that the client's
    /// contract to respond to events starts as soon as it registers its
    /// endpoint with scenic, NOT when it first calls `Watch()`.
    ///
    /// Initial response. The first call to |Watch| must be an empty vector.
    ///
    /// Event times. The timestamps on each event in the event vector are *not*
    /// guaranteed monotonic; touch events from different devices may be
    /// injected into Scenic at different times. Generally, events from a single
    /// device are expected to have monotonically increasing timestamps.
    ///
    /// View parameters. Occasionally, changes in view or viewport require
    /// notifying the client. If a |TouchEvent| carries |ViewParameters|, these
    /// parameters apply to successive |TouchPointerSample|s until the next
    /// |ViewParameters|.
    ///
    /// [1] The hanging get pattern enables straightforward API evolution, but
    /// unfortunately does not admit an idiomatic matching of response to event.
    pub fn r#watch(
        &self,
        mut responses: &[TouchResponse],
        ___deadline: zx::MonotonicInstant,
    ) -> Result<Vec<TouchEvent>, fidl::Error> {
        let _response =
            self.client.send_query::<TouchSourceWatchRequest, TouchSourceWatchResponse>(
                (responses,),
                0x38453127dd0fc7d,
                fidl::encoding::DynamicFlags::empty(),
                ___deadline,
            )?;
        Ok(_response.events)
    }

    /// The gesture protocol allows a client to enact a "hold" on an open
    /// interaction of touch events; it prevents resolution of interaction
    /// ownership, even after the interaction closes. This method updates the
    /// client's previous "hold" by replacing it with a response that allows
    /// ownership resolution to proceed.
    ///
    /// See |TouchInteractionId| for how a stream is structured into
    /// interactions.
    ///
    /// Flow control. The caller is allowed at most one |UpdateResponse| call
    /// per interaction, and it must be on a closed interaction. It is a logical
    /// error to call |UpdateResponse| when a normal response is possible with
    /// the |Watch| call.
    ///
    /// Validity. This TouchResponse must not be another "hold" response, and
    /// the overwritten response is expected to be a "hold" response.
    pub fn r#update_response(
        &self,
        mut interaction: &TouchInteractionId,
        mut response: &TouchResponse,
        ___deadline: zx::MonotonicInstant,
    ) -> Result<(), fidl::Error> {
        let _response = self
            .client
            .send_query::<TouchSourceUpdateResponseRequest, fidl::encoding::EmptyPayload>(
                (interaction, response),
                0x6c746a313b39898a,
                fidl::encoding::DynamicFlags::empty(),
                ___deadline,
            )?;
        Ok(_response)
    }
}

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

impl fidl::endpoints::Proxy for TouchSourceProxy {
    type Protocol = TouchSourceMarker;

    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 TouchSourceProxy {
    /// Create a new Proxy for fuchsia.ui.pointer/TouchSource.
    pub fn new(channel: ::fidl::AsyncChannel) -> Self {
        let protocol_name = <TouchSourceMarker 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) -> TouchSourceEventStream {
        TouchSourceEventStream { event_receiver: self.client.take_event_receiver() }
    }

    /// A method for a client to receive touch pointer events.
    ///
    /// This call is formulated as a "hanging get" pattern: the client asks for
    /// a set of recent events, and receives them via the callback. This
    /// pull-based approach ensures that clients consume events at their own
    /// pace; events don't clog up the channel in an unbounded manner.
    ///
    /// Flow control. The caller is allowed at most one in-flight |Watch| call
    /// at a time; it is a logical error to have concurrent calls to |Watch|.
    /// Non-compliance results in channel closure.
    ///
    /// Client pacing. The server will dispatch events to the caller on a FIFO,
    /// lossless, best-effort basis, but the caller must allocate enough time to
    /// keep up with new events. An unresponsive client may be categorized as
    /// "App Not Responding" and targeted for channel closure.
    ///
    /// Responses. The gesture disambiguation scheme relies on the server
    /// receiving a |TouchResponse| for each |TouchEvent|.|TouchPointerSample|;
    /// non-sample events should return an empty |TouchResponse| table to the
    /// server. Responses for *previous* events are fed to the server on the
    /// *next* call of |Watch| [1]. Each element in the |responses| vector is
    /// interpreted as the pairwise response to the event in the previous
    /// |events| vector; the vector lengths must match. Note that the client's
    /// contract to respond to events starts as soon as it registers its
    /// endpoint with scenic, NOT when it first calls `Watch()`.
    ///
    /// Initial response. The first call to |Watch| must be an empty vector.
    ///
    /// Event times. The timestamps on each event in the event vector are *not*
    /// guaranteed monotonic; touch events from different devices may be
    /// injected into Scenic at different times. Generally, events from a single
    /// device are expected to have monotonically increasing timestamps.
    ///
    /// View parameters. Occasionally, changes in view or viewport require
    /// notifying the client. If a |TouchEvent| carries |ViewParameters|, these
    /// parameters apply to successive |TouchPointerSample|s until the next
    /// |ViewParameters|.
    ///
    /// [1] The hanging get pattern enables straightforward API evolution, but
    /// unfortunately does not admit an idiomatic matching of response to event.
    pub fn r#watch(
        &self,
        mut responses: &[TouchResponse],
    ) -> fidl::client::QueryResponseFut<
        Vec<TouchEvent>,
        fidl::encoding::DefaultFuchsiaResourceDialect,
    > {
        TouchSourceProxyInterface::r#watch(self, responses)
    }

    /// The gesture protocol allows a client to enact a "hold" on an open
    /// interaction of touch events; it prevents resolution of interaction
    /// ownership, even after the interaction closes. This method updates the
    /// client's previous "hold" by replacing it with a response that allows
    /// ownership resolution to proceed.
    ///
    /// See |TouchInteractionId| for how a stream is structured into
    /// interactions.
    ///
    /// Flow control. The caller is allowed at most one |UpdateResponse| call
    /// per interaction, and it must be on a closed interaction. It is a logical
    /// error to call |UpdateResponse| when a normal response is possible with
    /// the |Watch| call.
    ///
    /// Validity. This TouchResponse must not be another "hold" response, and
    /// the overwritten response is expected to be a "hold" response.
    pub fn r#update_response(
        &self,
        mut interaction: &TouchInteractionId,
        mut response: &TouchResponse,
    ) -> fidl::client::QueryResponseFut<(), fidl::encoding::DefaultFuchsiaResourceDialect> {
        TouchSourceProxyInterface::r#update_response(self, interaction, response)
    }
}

impl TouchSourceProxyInterface for TouchSourceProxy {
    type WatchResponseFut = fidl::client::QueryResponseFut<
        Vec<TouchEvent>,
        fidl::encoding::DefaultFuchsiaResourceDialect,
    >;
    fn r#watch(&self, mut responses: &[TouchResponse]) -> Self::WatchResponseFut {
        fn _decode(
            mut _buf: Result<<fidl::encoding::DefaultFuchsiaResourceDialect as fidl::encoding::ResourceDialect>::MessageBufEtc, fidl::Error>,
        ) -> Result<Vec<TouchEvent>, fidl::Error> {
            let _response = fidl::client::decode_transaction_body::<
                TouchSourceWatchResponse,
                fidl::encoding::DefaultFuchsiaResourceDialect,
                0x38453127dd0fc7d,
            >(_buf?)?;
            Ok(_response.events)
        }
        self.client.send_query_and_decode::<TouchSourceWatchRequest, Vec<TouchEvent>>(
            (responses,),
            0x38453127dd0fc7d,
            fidl::encoding::DynamicFlags::empty(),
            _decode,
        )
    }

    type UpdateResponseResponseFut =
        fidl::client::QueryResponseFut<(), fidl::encoding::DefaultFuchsiaResourceDialect>;
    fn r#update_response(
        &self,
        mut interaction: &TouchInteractionId,
        mut response: &TouchResponse,
    ) -> Self::UpdateResponseResponseFut {
        fn _decode(
            mut _buf: Result<<fidl::encoding::DefaultFuchsiaResourceDialect as fidl::encoding::ResourceDialect>::MessageBufEtc, fidl::Error>,
        ) -> Result<(), fidl::Error> {
            let _response = fidl::client::decode_transaction_body::<
                fidl::encoding::EmptyPayload,
                fidl::encoding::DefaultFuchsiaResourceDialect,
                0x6c746a313b39898a,
            >(_buf?)?;
            Ok(_response)
        }
        self.client.send_query_and_decode::<TouchSourceUpdateResponseRequest, ()>(
            (interaction, response),
            0x6c746a313b39898a,
            fidl::encoding::DynamicFlags::empty(),
            _decode,
        )
    }
}

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

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

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

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

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

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

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

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

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

impl fidl::endpoints::RequestStream for TouchSourceRequestStream {
    type Protocol = TouchSourceMarker;
    type ControlHandle = TouchSourceControlHandle;

    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 {
        TouchSourceControlHandle { 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 TouchSourceRequestStream {
    type Item = Result<TouchSourceRequest, 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 TouchSourceRequestStream 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 {
                    0x38453127dd0fc7d => {
                        header.validate_request_tx_id(fidl::MethodType::TwoWay)?;
                        let mut req = fidl::new_empty!(
                            TouchSourceWatchRequest,
                            fidl::encoding::DefaultFuchsiaResourceDialect
                        );
                        fidl::encoding::Decoder::<fidl::encoding::DefaultFuchsiaResourceDialect>::decode_into::<TouchSourceWatchRequest>(&header, _body_bytes, handles, &mut req)?;
                        let control_handle = TouchSourceControlHandle { inner: this.inner.clone() };
                        Ok(TouchSourceRequest::Watch {
                            responses: req.responses,

                            responder: TouchSourceWatchResponder {
                                control_handle: std::mem::ManuallyDrop::new(control_handle),
                                tx_id: header.tx_id,
                            },
                        })
                    }
                    0x6c746a313b39898a => {
                        header.validate_request_tx_id(fidl::MethodType::TwoWay)?;
                        let mut req = fidl::new_empty!(
                            TouchSourceUpdateResponseRequest,
                            fidl::encoding::DefaultFuchsiaResourceDialect
                        );
                        fidl::encoding::Decoder::<fidl::encoding::DefaultFuchsiaResourceDialect>::decode_into::<TouchSourceUpdateResponseRequest>(&header, _body_bytes, handles, &mut req)?;
                        let control_handle = TouchSourceControlHandle { inner: this.inner.clone() };
                        Ok(TouchSourceRequest::UpdateResponse {
                            interaction: req.interaction,
                            response: req.response,

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

/// A method for a client to receive touch events and respond in a global
/// gesture disambiguation protocol.
///
/// The position of a touch event is defined in the context of a viewport,
/// situated in the view. The dimensions of the view and viewport, and their
/// spatial relationship (defined with a transform matrix), are supplied
/// synchronously in a |ViewParameter| table. A view may retrieve a pointer's
/// position in its local coordinate system by applying the viewport-to-view
/// transform matrix.
///
/// The viewport is embedded in an independent and stable coordinate system,
/// suitable for interpreting touch events in a scale-independent manner; a
/// swipe will be observed at a constant scale, even under effects such as
/// magnification or panning. However, other effects, such as enlargening the
/// view's clip bounds, may trigger a change in the viewport extents.
#[derive(Debug)]
pub enum TouchSourceRequest {
    /// A method for a client to receive touch pointer events.
    ///
    /// This call is formulated as a "hanging get" pattern: the client asks for
    /// a set of recent events, and receives them via the callback. This
    /// pull-based approach ensures that clients consume events at their own
    /// pace; events don't clog up the channel in an unbounded manner.
    ///
    /// Flow control. The caller is allowed at most one in-flight |Watch| call
    /// at a time; it is a logical error to have concurrent calls to |Watch|.
    /// Non-compliance results in channel closure.
    ///
    /// Client pacing. The server will dispatch events to the caller on a FIFO,
    /// lossless, best-effort basis, but the caller must allocate enough time to
    /// keep up with new events. An unresponsive client may be categorized as
    /// "App Not Responding" and targeted for channel closure.
    ///
    /// Responses. The gesture disambiguation scheme relies on the server
    /// receiving a |TouchResponse| for each |TouchEvent|.|TouchPointerSample|;
    /// non-sample events should return an empty |TouchResponse| table to the
    /// server. Responses for *previous* events are fed to the server on the
    /// *next* call of |Watch| [1]. Each element in the |responses| vector is
    /// interpreted as the pairwise response to the event in the previous
    /// |events| vector; the vector lengths must match. Note that the client's
    /// contract to respond to events starts as soon as it registers its
    /// endpoint with scenic, NOT when it first calls `Watch()`.
    ///
    /// Initial response. The first call to |Watch| must be an empty vector.
    ///
    /// Event times. The timestamps on each event in the event vector are *not*
    /// guaranteed monotonic; touch events from different devices may be
    /// injected into Scenic at different times. Generally, events from a single
    /// device are expected to have monotonically increasing timestamps.
    ///
    /// View parameters. Occasionally, changes in view or viewport require
    /// notifying the client. If a |TouchEvent| carries |ViewParameters|, these
    /// parameters apply to successive |TouchPointerSample|s until the next
    /// |ViewParameters|.
    ///
    /// [1] The hanging get pattern enables straightforward API evolution, but
    /// unfortunately does not admit an idiomatic matching of response to event.
    Watch { responses: Vec<TouchResponse>, responder: TouchSourceWatchResponder },
    /// The gesture protocol allows a client to enact a "hold" on an open
    /// interaction of touch events; it prevents resolution of interaction
    /// ownership, even after the interaction closes. This method updates the
    /// client's previous "hold" by replacing it with a response that allows
    /// ownership resolution to proceed.
    ///
    /// See |TouchInteractionId| for how a stream is structured into
    /// interactions.
    ///
    /// Flow control. The caller is allowed at most one |UpdateResponse| call
    /// per interaction, and it must be on a closed interaction. It is a logical
    /// error to call |UpdateResponse| when a normal response is possible with
    /// the |Watch| call.
    ///
    /// Validity. This TouchResponse must not be another "hold" response, and
    /// the overwritten response is expected to be a "hold" response.
    UpdateResponse {
        interaction: TouchInteractionId,
        response: TouchResponse,
        responder: TouchSourceUpdateResponseResponder,
    },
}

impl TouchSourceRequest {
    #[allow(irrefutable_let_patterns)]
    pub fn into_watch(self) -> Option<(Vec<TouchResponse>, TouchSourceWatchResponder)> {
        if let TouchSourceRequest::Watch { responses, responder } = self {
            Some((responses, responder))
        } else {
            None
        }
    }

    #[allow(irrefutable_let_patterns)]
    pub fn into_update_response(
        self,
    ) -> Option<(TouchInteractionId, TouchResponse, TouchSourceUpdateResponseResponder)> {
        if let TouchSourceRequest::UpdateResponse { interaction, response, responder } = self {
            Some((interaction, response, responder))
        } else {
            None
        }
    }

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

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

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

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

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

impl TouchSourceControlHandle {}

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

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

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

    fn send_raw(&self, mut events: &[TouchEvent]) -> Result<(), fidl::Error> {
        self.control_handle.inner.send::<TouchSourceWatchResponse>(
            (events,),
            self.tx_id,
            0x38453127dd0fc7d,
            fidl::encoding::DynamicFlags::empty(),
        )
    }
}

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

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

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

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

    fn send_raw(&self) -> Result<(), fidl::Error> {
        self.control_handle.inner.send::<fidl::encoding::EmptyPayload>(
            (),
            self.tx_id,
            0x6c746a313b39898a,
            fidl::encoding::DynamicFlags::empty(),
        )
    }
}

mod internal {
    use super::*;
}