1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
// WARNING: This file is machine generated by fidlgen.

// fidl_experiment = transitional_allow_list

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

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

#[cfg(target_os = "fuchsia")]
use fuchsia_zircon as zx;

#[derive(Debug, PartialEq)]
pub struct ProviderCreateViewRequest {
    pub a11y_view_token: fidl_fuchsia_ui_views::ViewCreationToken,
    pub proxy_viewport_token: fidl_fuchsia_ui_views::ViewportCreationToken,
}

impl fidl::Standalone for ProviderCreateViewRequest {}

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

impl fidl::endpoints::ProtocolMarker for ProviderMarker {
    type Proxy = ProviderProxy;
    type RequestStream = ProviderRequestStream;

    #[cfg(target_os = "fuchsia")]
    type SynchronousProxy = ProviderSynchronousProxy;

    const DEBUG_NAME: &'static str = "fuchsia.accessibility.scene.Provider";
}
impl fidl::endpoints::DiscoverableProtocolMarker for ProviderMarker {}

pub trait ProviderProxyInterface: Send + Sync {
    fn r#create_view(
        &self,
        a11y_view_token: fidl_fuchsia_ui_views::ViewCreationToken,
        proxy_viewport_token: fidl_fuchsia_ui_views::ViewportCreationToken,
    ) -> Result<(), fidl::Error>;
}

#[derive(Debug)]
#[cfg(target_os = "fuchsia")]
pub struct ProviderSynchronousProxy {
    client: fidl::client::sync::Client,
}

#[cfg(target_os = "fuchsia")]
impl fidl::endpoints::SynchronousProxy for ProviderSynchronousProxy {
    type Proxy = ProviderProxy;
    type Protocol = ProviderMarker;

    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 ProviderSynchronousProxy {
    pub fn new(channel: fidl::Channel) -> Self {
        let protocol_name = <ProviderMarker 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::Time) -> Result<ProviderEvent, fidl::Error> {
        ProviderEvent::decode(self.client.wait_for_event(deadline)?)
    }

    /// Prompts the server (a11y manager) to create a new accessibility `View`,
    /// which the client (scene manager) must connect to the root of the scene
    /// graph.
    ///
    /// The accessibility view is used to vend capabilities to a11y manager
    /// that a view confers, e.g. ability to request focus, consume and
    /// respond to input events, annotate underlying views, and apply
    /// coordinate transforms to its subtree.
    ///
    /// With the a11y view, the scene topology is roughly:
    ///
    ///          scene root (owned by scene manager)
    ///               |
    ///         a11y viewport (owned by scene manager)
    ///               |
    ///           a11y view (owned by a11y manager)
    ///               |
    ///        proxy viewport (owned by a11y manager)
    ///               |
    ///          proxy view (owned by scene manager)
    ///               |
    ///        client viewport (owned by scene manager)
    ///               |
    ///          client view (owned by UI client)
    ///
    /// ARGS
    ///
    /// a11y_view_token: Token generated by scene manager, which a11y manager
    /// uses to create the a11y view in its flatland instance.
    ///
    /// proxy_viewport_token: Token generated by scene manager, which a11y manager
    /// uses to create a "proxy viewport" within the a11y view. The client must
    /// subsequently create a "proxy view" using the corresponding view creation
    /// token it generated.
    ///
    /// SYNCHRONIZATION
    ///
    /// Callers may safely proceed once the accessibility `ViewRef` is returned
    /// to the accessibility `ViewPort` holder.
    ///
    /// LIFECYCLE
    ///
    /// The client is free to close the channel any time after calling CreateView().
    ///
    /// EPITAPH
    ///
    /// This method may return the following epitaphs:
    ///
    /// - ZX_ERR_INVALID_ARGS, if either of the provided tokens is invalid.
    /// - ZX_ERR_PEER_CLOSED, if Scenic fails creating the accessibility `Viewport`.
    pub fn r#create_view(
        &self,
        mut a11y_view_token: fidl_fuchsia_ui_views::ViewCreationToken,
        mut proxy_viewport_token: fidl_fuchsia_ui_views::ViewportCreationToken,
    ) -> Result<(), fidl::Error> {
        self.client.send::<ProviderCreateViewRequest>(
            (&mut a11y_view_token, &mut proxy_viewport_token),
            0x406435c9e8281daf,
            fidl::encoding::DynamicFlags::empty(),
        )
    }
}

#[derive(Debug, Clone)]
pub struct ProviderProxy {
    client: fidl::client::Client,
}

impl fidl::endpoints::Proxy for ProviderProxy {
    type Protocol = ProviderMarker;

    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 ProviderProxy {
    /// Create a new Proxy for fuchsia.accessibility.scene/Provider.
    pub fn new(channel: fidl::AsyncChannel) -> Self {
        let protocol_name = <ProviderMarker 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) -> ProviderEventStream {
        ProviderEventStream { event_receiver: self.client.take_event_receiver() }
    }

    /// Prompts the server (a11y manager) to create a new accessibility `View`,
    /// which the client (scene manager) must connect to the root of the scene
    /// graph.
    ///
    /// The accessibility view is used to vend capabilities to a11y manager
    /// that a view confers, e.g. ability to request focus, consume and
    /// respond to input events, annotate underlying views, and apply
    /// coordinate transforms to its subtree.
    ///
    /// With the a11y view, the scene topology is roughly:
    ///
    ///          scene root (owned by scene manager)
    ///               |
    ///         a11y viewport (owned by scene manager)
    ///               |
    ///           a11y view (owned by a11y manager)
    ///               |
    ///        proxy viewport (owned by a11y manager)
    ///               |
    ///          proxy view (owned by scene manager)
    ///               |
    ///        client viewport (owned by scene manager)
    ///               |
    ///          client view (owned by UI client)
    ///
    /// ARGS
    ///
    /// a11y_view_token: Token generated by scene manager, which a11y manager
    /// uses to create the a11y view in its flatland instance.
    ///
    /// proxy_viewport_token: Token generated by scene manager, which a11y manager
    /// uses to create a "proxy viewport" within the a11y view. The client must
    /// subsequently create a "proxy view" using the corresponding view creation
    /// token it generated.
    ///
    /// SYNCHRONIZATION
    ///
    /// Callers may safely proceed once the accessibility `ViewRef` is returned
    /// to the accessibility `ViewPort` holder.
    ///
    /// LIFECYCLE
    ///
    /// The client is free to close the channel any time after calling CreateView().
    ///
    /// EPITAPH
    ///
    /// This method may return the following epitaphs:
    ///
    /// - ZX_ERR_INVALID_ARGS, if either of the provided tokens is invalid.
    /// - ZX_ERR_PEER_CLOSED, if Scenic fails creating the accessibility `Viewport`.
    pub fn r#create_view(
        &self,
        mut a11y_view_token: fidl_fuchsia_ui_views::ViewCreationToken,
        mut proxy_viewport_token: fidl_fuchsia_ui_views::ViewportCreationToken,
    ) -> Result<(), fidl::Error> {
        ProviderProxyInterface::r#create_view(self, a11y_view_token, proxy_viewport_token)
    }
}

impl ProviderProxyInterface for ProviderProxy {
    fn r#create_view(
        &self,
        mut a11y_view_token: fidl_fuchsia_ui_views::ViewCreationToken,
        mut proxy_viewport_token: fidl_fuchsia_ui_views::ViewportCreationToken,
    ) -> Result<(), fidl::Error> {
        self.client.send::<ProviderCreateViewRequest>(
            (&mut a11y_view_token, &mut proxy_viewport_token),
            0x406435c9e8281daf,
            fidl::encoding::DynamicFlags::empty(),
        )
    }
}

pub struct ProviderEventStream {
    event_receiver: fidl::client::EventReceiver,
}

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

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

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

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

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

/// A Stream of incoming requests for fuchsia.accessibility.scene/Provider.
pub struct ProviderRequestStream {
    inner: std::sync::Arc<fidl::ServeInner>,
    is_terminated: bool,
}

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

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

impl fidl::endpoints::RequestStream for ProviderRequestStream {
    type Protocol = ProviderMarker;
    type ControlHandle = ProviderControlHandle;

    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 {
        ProviderControlHandle { inner: self.inner.clone() }
    }

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

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

impl futures::Stream for ProviderRequestStream {
    type Item = Result<ProviderRequest, 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 ProviderRequestStream after completion");
        }
        fidl::encoding::with_tls_decode_buf(|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))))
                }
            }

            // 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 {
                0x406435c9e8281daf => {
                    header.validate_request_tx_id(fidl::MethodType::OneWay)?;
                    let mut req = fidl::new_empty!(ProviderCreateViewRequest);
                    fidl::encoding::Decoder::decode_into::<ProviderCreateViewRequest>(
                        &header,
                        _body_bytes,
                        handles,
                        &mut req,
                    )?;
                    let control_handle = ProviderControlHandle { inner: this.inner.clone() };
                    Ok(ProviderRequest::CreateView {
                        a11y_view_token: req.a11y_view_token,
                        proxy_viewport_token: req.proxy_viewport_token,

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

#[derive(Debug)]
pub enum ProviderRequest {
    /// Prompts the server (a11y manager) to create a new accessibility `View`,
    /// which the client (scene manager) must connect to the root of the scene
    /// graph.
    ///
    /// The accessibility view is used to vend capabilities to a11y manager
    /// that a view confers, e.g. ability to request focus, consume and
    /// respond to input events, annotate underlying views, and apply
    /// coordinate transforms to its subtree.
    ///
    /// With the a11y view, the scene topology is roughly:
    ///
    ///          scene root (owned by scene manager)
    ///               |
    ///         a11y viewport (owned by scene manager)
    ///               |
    ///           a11y view (owned by a11y manager)
    ///               |
    ///        proxy viewport (owned by a11y manager)
    ///               |
    ///          proxy view (owned by scene manager)
    ///               |
    ///        client viewport (owned by scene manager)
    ///               |
    ///          client view (owned by UI client)
    ///
    /// ARGS
    ///
    /// a11y_view_token: Token generated by scene manager, which a11y manager
    /// uses to create the a11y view in its flatland instance.
    ///
    /// proxy_viewport_token: Token generated by scene manager, which a11y manager
    /// uses to create a "proxy viewport" within the a11y view. The client must
    /// subsequently create a "proxy view" using the corresponding view creation
    /// token it generated.
    ///
    /// SYNCHRONIZATION
    ///
    /// Callers may safely proceed once the accessibility `ViewRef` is returned
    /// to the accessibility `ViewPort` holder.
    ///
    /// LIFECYCLE
    ///
    /// The client is free to close the channel any time after calling CreateView().
    ///
    /// EPITAPH
    ///
    /// This method may return the following epitaphs:
    ///
    /// - ZX_ERR_INVALID_ARGS, if either of the provided tokens is invalid.
    /// - ZX_ERR_PEER_CLOSED, if Scenic fails creating the accessibility `Viewport`.
    CreateView {
        a11y_view_token: fidl_fuchsia_ui_views::ViewCreationToken,
        proxy_viewport_token: fidl_fuchsia_ui_views::ViewportCreationToken,
        control_handle: ProviderControlHandle,
    },
}

impl ProviderRequest {
    #[allow(irrefutable_let_patterns)]
    pub fn into_create_view(
        self,
    ) -> Option<(
        fidl_fuchsia_ui_views::ViewCreationToken,
        fidl_fuchsia_ui_views::ViewportCreationToken,
        ProviderControlHandle,
    )> {
        if let ProviderRequest::CreateView {
            a11y_view_token,
            proxy_viewport_token,
            control_handle,
        } = self
        {
            Some((a11y_view_token, proxy_viewport_token, control_handle))
        } else {
            None
        }
    }

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

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

impl fidl::endpoints::ControlHandle for ProviderControlHandle {
    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<'a>(&'a self) -> fidl::OnSignals<'a> {
        self.inner.channel().on_closed()
    }
}

impl ProviderControlHandle {}

mod internal {
    use super::*;

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

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

        #[inline(always)]
        fn inline_size(_context: fidl::encoding::Context) -> usize {
            8
        }
    }
    impl fidl::encoding::ResourceTypeMarker for ProviderCreateViewRequest {
        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::Encode<ProviderCreateViewRequest> for &mut ProviderCreateViewRequest {
        #[inline]
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<'_>,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<ProviderCreateViewRequest>(offset);
            // Delegate to tuple encoding.
            fidl::encoding::Encode::<ProviderCreateViewRequest>::encode(
                (
                    <fidl_fuchsia_ui_views::ViewCreationToken as fidl::encoding::ResourceTypeMarker>::take_or_borrow(&mut self.a11y_view_token),
                    <fidl_fuchsia_ui_views::ViewportCreationToken as fidl::encoding::ResourceTypeMarker>::take_or_borrow(&mut self.proxy_viewport_token),
                ),
                encoder, offset, _depth
            )
        }
    }
    unsafe impl<
            T0: fidl::encoding::Encode<fidl_fuchsia_ui_views::ViewCreationToken>,
            T1: fidl::encoding::Encode<fidl_fuchsia_ui_views::ViewportCreationToken>,
        > fidl::encoding::Encode<ProviderCreateViewRequest> for (T0, T1)
    {
        #[inline]
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<'_>,
            offset: usize,
            depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<ProviderCreateViewRequest>(offset);
            // Zero out padding regions. There's no need to apply masks
            // because the unmasked parts will be overwritten by fields.
            // Write the fields.
            self.0.encode(encoder, offset + 0, depth)?;
            self.1.encode(encoder, offset + 4, depth)?;
            Ok(())
        }
    }

    impl fidl::encoding::Decode<Self> for ProviderCreateViewRequest {
        #[inline(always)]
        fn new_empty() -> Self {
            Self {
                a11y_view_token: fidl::new_empty!(fidl_fuchsia_ui_views::ViewCreationToken),
                proxy_viewport_token: fidl::new_empty!(
                    fidl_fuchsia_ui_views::ViewportCreationToken
                ),
            }
        }

        #[inline]
        unsafe fn decode(
            &mut self,
            decoder: &mut fidl::encoding::Decoder<'_>,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            decoder.debug_check_bounds::<Self>(offset);
            // Verify that padding bytes are zero.
            fidl::decode!(
                fidl_fuchsia_ui_views::ViewCreationToken,
                &mut self.a11y_view_token,
                decoder,
                offset + 0,
                _depth
            )?;
            fidl::decode!(
                fidl_fuchsia_ui_views::ViewportCreationToken,
                &mut self.proxy_viewport_token,
                decoder,
                offset + 4,
                _depth
            )?;
            Ok(())
        }
    }
}