StratoSDK is a framework with a declarative approach similar to Flutter/React, written and designed entirely for Rust.
| 1 | use std::{cell::RefCell, rc::Rc}; |
| 2 | |
| 3 | use super::*; |
| 4 | |
| 5 | #[test] |
| 6 | fn test_transfer_view_to_window_updates_window_mapping() { |
| 7 | #[derive(Default)] |
| 8 | struct TestView { |
| 9 | value: usize, |
| 10 | } |
| 11 | |
| 12 | impl Entity for TestView { |
| 13 | type Event = (); |
| 14 | } |
| 15 | |
| 16 | impl View for TestView { |
| 17 | fn render(&self, _: &AppContext) -> Box<dyn Element> { |
| 18 | Empty::new().finish() |
| 19 | } |
| 20 | |
| 21 | fn ui_name() -> &'static str { |
| 22 | "TestView" |
| 23 | } |
| 24 | } |
| 25 | |
| 26 | impl TypedActionView for TestView { |
| 27 | type Action = (); |
| 28 | } |
| 29 | |
| 30 | App::test((), |mut app| async move { |
| 31 | let (window_1_id, _) = app.add_window(WindowStyle::NotStealFocus, |_| TestView::default()); |
| 32 | let (window_2_id, _) = app.add_window(WindowStyle::NotStealFocus, |_| TestView::default()); |
| 33 | |
| 34 | let view_to_transfer = app.add_view(window_1_id, |_| TestView { value: 42 }); |
| 35 | let view_id = view_to_transfer.id(); |
| 36 | |
| 37 | app.read(|ctx| { |
| 38 | assert_eq!( |
| 39 | view_to_transfer.window_id(ctx), |
| 40 | window_1_id, |
| 41 | "view should initially be in window 1" |
| 42 | ); |
| 43 | }); |
| 44 | |
| 45 | app.read(|ctx| { |
| 46 | assert!( |
| 47 | ctx.windows[&window_1_id].views.contains_key(&view_id), |
| 48 | "view should be in window 1's views map" |
| 49 | ); |
| 50 | assert!( |
| 51 | !ctx.windows[&window_2_id].views.contains_key(&view_id), |
| 52 | "view should not be in window 2's views map yet" |
| 53 | ); |
| 54 | }); |
| 55 | |
| 56 | let success = |
| 57 | app.update(|ctx| ctx.transfer_view_to_window(view_id, window_1_id, window_2_id)); |
| 58 | assert!(success, "transfer should succeed"); |
| 59 | |
| 60 | app.read(|ctx| { |
| 61 | assert_eq!( |
| 62 | view_to_transfer.window_id(ctx), |
| 63 | window_2_id, |
| 64 | "view should now be in window 2" |
| 65 | ); |
| 66 | }); |
| 67 | |
| 68 | app.read(|ctx| { |
| 69 | assert!( |
| 70 | !ctx.windows[&window_1_id].views.contains_key(&view_id), |
| 71 | "view should no longer be in window 1's views map" |
| 72 | ); |
| 73 | assert!( |
| 74 | ctx.windows[&window_2_id].views.contains_key(&view_id), |
| 75 | "view should now be in window 2's views map" |
| 76 | ); |
| 77 | }); |
| 78 | |
| 79 | view_to_transfer.read(&app, |view, _| { |
| 80 | assert_eq!( |
| 81 | view.value, 42, |
| 82 | "view data should be preserved after transfer" |
| 83 | ); |
| 84 | }); |
| 85 | }); |
| 86 | } |
| 87 | |
| 88 | #[test] |
| 89 | fn test_transfer_view_subscriptions_continue_working() { |
| 90 | #[derive(Default)] |
| 91 | struct EmitterView; |
| 92 | |
| 93 | impl Entity for EmitterView { |
| 94 | type Event = usize; |
| 95 | } |
| 96 | |
| 97 | impl View for EmitterView { |
| 98 | fn render(&self, _: &AppContext) -> Box<dyn Element> { |
| 99 | Empty::new().finish() |
| 100 | } |
| 101 | |
| 102 | fn ui_name() -> &'static str { |
| 103 | "EmitterView" |
| 104 | } |
| 105 | } |
| 106 | |
| 107 | impl TypedActionView for EmitterView { |
| 108 | type Action = (); |
| 109 | } |
| 110 | |
| 111 | #[derive(Default)] |
| 112 | struct SubscriberView { |
| 113 | received_events: Vec<usize>, |
| 114 | } |
| 115 | |
| 116 | impl Entity for SubscriberView { |
| 117 | type Event = (); |
| 118 | } |
| 119 | |
| 120 | impl View for SubscriberView { |
| 121 | fn render(&self, _: &AppContext) -> Box<dyn Element> { |
| 122 | Empty::new().finish() |
| 123 | } |
| 124 | |
| 125 | fn ui_name() -> &'static str { |
| 126 | "SubscriberView" |
| 127 | } |
| 128 | } |
| 129 | |
| 130 | impl TypedActionView for SubscriberView { |
| 131 | type Action = (); |
| 132 | } |
| 133 | |
| 134 | App::test((), |mut app| async move { |
| 135 | let (window_1_id, _) = app.add_window(WindowStyle::NotStealFocus, |_| EmitterView); |
| 136 | let (window_2_id, _) = |
| 137 | app.add_window(WindowStyle::NotStealFocus, |_| SubscriberView::default()); |
| 138 | |
| 139 | let emitter = app.add_view(window_1_id, |_| EmitterView); |
| 140 | let subscriber = app.add_view(window_2_id, |_| SubscriberView::default()); |
| 141 | |
| 142 | subscriber.update(&mut app, |_, ctx| { |
| 143 | ctx.subscribe_to_view(&emitter, |view, _, event, _| { |
| 144 | view.received_events.push(*event); |
| 145 | }); |
| 146 | }); |
| 147 | |
| 148 | emitter.update(&mut app, |_, ctx| ctx.emit(1)); |
| 149 | subscriber.read(&app, |view, _| { |
| 150 | assert_eq!( |
| 151 | view.received_events, |
| 152 | vec![1], |
| 153 | "should receive event before transfer" |
| 154 | ); |
| 155 | }); |
| 156 | |
| 157 | let emitter_id = emitter.id(); |
| 158 | let success = |
| 159 | app.update(|ctx| ctx.transfer_view_to_window(emitter_id, window_1_id, window_2_id)); |
| 160 | assert!(success, "transfer should succeed"); |
| 161 | |
| 162 | emitter.update(&mut app, |_, ctx| ctx.emit(2)); |
| 163 | subscriber.read(&app, |view, _| { |
| 164 | assert_eq!( |
| 165 | view.received_events, |
| 166 | vec![1, 2], |
| 167 | "should receive event after transfer" |
| 168 | ); |
| 169 | }); |
| 170 | |
| 171 | emitter.update(&mut app, |_, ctx| ctx.emit(3)); |
| 172 | subscriber.read(&app, |view, _| { |
| 173 | assert_eq!( |
| 174 | view.received_events, |
| 175 | vec![1, 2, 3], |
| 176 | "should continue receiving events" |
| 177 | ); |
| 178 | }); |
| 179 | }); |
| 180 | } |
| 181 | |
| 182 | #[test] |
| 183 | fn test_transfer_view_app_subscriptions_continue_working() { |
| 184 | #[derive(Default)] |
| 185 | struct TestView; |
| 186 | |
| 187 | impl Entity for TestView { |
| 188 | type Event = usize; |
| 189 | } |
| 190 | |
| 191 | impl View for TestView { |
| 192 | fn render(&self, _: &AppContext) -> Box<dyn Element> { |
| 193 | Empty::new().finish() |
| 194 | } |
| 195 | |
| 196 | fn ui_name() -> &'static str { |
| 197 | "TestView" |
| 198 | } |
| 199 | } |
| 200 | |
| 201 | impl TypedActionView for TestView { |
| 202 | type Action = (); |
| 203 | } |
| 204 | |
| 205 | App::test((), |mut app| async move { |
| 206 | let (window_1_id, _) = app.add_window(WindowStyle::NotStealFocus, |_| TestView); |
| 207 | let (window_2_id, _) = app.add_window(WindowStyle::NotStealFocus, |_| TestView); |
| 208 | |
| 209 | let emitter = app.add_view(window_1_id, |_| TestView); |
| 210 | let received_events: Rc<RefCell<Vec<usize>>> = Rc::new(RefCell::new(Vec::new())); |
| 211 | let received_events_clone = received_events.clone(); |
| 212 | |
| 213 | app.update(|ctx| { |
| 214 | ctx.subscribe_to_view(&emitter, move |_view, event, _ctx| { |
| 215 | received_events_clone.borrow_mut().push(*event); |
| 216 | }); |
| 217 | }); |
| 218 | |
| 219 | emitter.update(&mut app, |_, ctx| ctx.emit(1)); |
| 220 | assert_eq!( |
| 221 | *received_events.borrow(), |
| 222 | vec![1], |
| 223 | "should receive event before transfer" |
| 224 | ); |
| 225 | |
| 226 | let emitter_id = emitter.id(); |
| 227 | let success = |
| 228 | app.update(|ctx| ctx.transfer_view_to_window(emitter_id, window_1_id, window_2_id)); |
| 229 | assert!(success, "transfer should succeed"); |
| 230 | |
| 231 | emitter.update(&mut app, |_, ctx| ctx.emit(2)); |
| 232 | assert_eq!( |
| 233 | *received_events.borrow(), |
| 234 | vec![1, 2], |
| 235 | "should receive event after transfer" |
| 236 | ); |
| 237 | }); |
| 238 | } |
| 239 | |
| 240 | #[test] |
| 241 | fn test_transfer_view_observations_continue_working() { |
| 242 | #[derive(Default)] |
| 243 | struct ObserverView { |
| 244 | observed_counts: Vec<usize>, |
| 245 | } |
| 246 | |
| 247 | impl Entity for ObserverView { |
| 248 | type Event = (); |
| 249 | } |
| 250 | |
| 251 | impl View for ObserverView { |
| 252 | fn render(&self, _: &AppContext) -> Box<dyn Element> { |
| 253 | Empty::new().finish() |
| 254 | } |
| 255 | |
| 256 | fn ui_name() -> &'static str { |
| 257 | "ObserverView" |
| 258 | } |
| 259 | } |
| 260 | |
| 261 | impl TypedActionView for ObserverView { |
| 262 | type Action = (); |
| 263 | } |
| 264 | |
| 265 | #[derive(Default)] |
| 266 | struct ObservedModel { |
| 267 | count: usize, |
| 268 | } |
| 269 | |
| 270 | impl Entity for ObservedModel { |
| 271 | type Event = (); |
| 272 | } |
| 273 | |
| 274 | App::test((), |mut app| async move { |
| 275 | let (window_1_id, _) = |
| 276 | app.add_window(WindowStyle::NotStealFocus, |_| ObserverView::default()); |
| 277 | let (window_2_id, _) = |
| 278 | app.add_window(WindowStyle::NotStealFocus, |_| ObserverView::default()); |
| 279 | |
| 280 | let model = app.add_model(|_| ObservedModel { count: 0 }); |
| 281 | let observer = app.add_view(window_1_id, |_| ObserverView::default()); |
| 282 | |
| 283 | observer.update(&mut app, |_, ctx| { |
| 284 | ctx.observe(&model, |view, observed, ctx| { |
| 285 | view.observed_counts.push(observed.as_ref(ctx).count); |
| 286 | }); |
| 287 | }); |
| 288 | |
| 289 | model.update(&mut app, |m, ctx| { |
| 290 | m.count = 1; |
| 291 | ctx.notify(); |
| 292 | }); |
| 293 | observer.read(&app, |view, _| { |
| 294 | assert_eq!( |
| 295 | view.observed_counts, |
| 296 | vec![1], |
| 297 | "should observe before transfer" |
| 298 | ); |
| 299 | }); |
| 300 | |
| 301 | let observer_id = observer.id(); |
| 302 | let success = |
| 303 | app.update(|ctx| ctx.transfer_view_to_window(observer_id, window_1_id, window_2_id)); |
| 304 | assert!(success, "transfer should succeed"); |
| 305 | |
| 306 | model.update(&mut app, |m, ctx| { |
| 307 | m.count = 2; |
| 308 | ctx.notify(); |
| 309 | }); |
| 310 | observer.read(&app, |view, _| { |
| 311 | assert_eq!( |
| 312 | view.observed_counts, |
| 313 | vec![1, 2], |
| 314 | "should observe after transfer" |
| 315 | ); |
| 316 | }); |
| 317 | }); |
| 318 | } |
| 319 | |
| 320 | #[test] |
| 321 | fn test_on_window_transferred_callback_fires() { |
| 322 | struct TransferTrackingView { |
| 323 | transfer_events: Vec<(WindowId, WindowId)>, |
| 324 | } |
| 325 | |
| 326 | impl Entity for TransferTrackingView { |
| 327 | type Event = (); |
| 328 | } |
| 329 | |
| 330 | impl View for TransferTrackingView { |
| 331 | fn render(&self, _: &AppContext) -> Box<dyn Element> { |
| 332 | Empty::new().finish() |
| 333 | } |
| 334 | |
| 335 | fn ui_name() -> &'static str { |
| 336 | "TransferTrackingView" |
| 337 | } |
| 338 | |
| 339 | fn on_window_transferred( |
| 340 | &mut self, |
| 341 | source_window_id: WindowId, |
| 342 | target_window_id: WindowId, |
| 343 | _ctx: &mut ViewContext<Self>, |
| 344 | ) { |
| 345 | self.transfer_events |
| 346 | .push((source_window_id, target_window_id)); |
| 347 | } |
| 348 | } |
| 349 | |
| 350 | impl TypedActionView for TransferTrackingView { |
| 351 | type Action = (); |
| 352 | } |
| 353 | |
| 354 | App::test((), |mut app| async move { |
| 355 | let (window_1_id, _) = |
| 356 | app.add_window(WindowStyle::NotStealFocus, |_| TransferTrackingView { |
| 357 | transfer_events: Vec::new(), |
| 358 | }); |
| 359 | let (window_2_id, _) = |
| 360 | app.add_window(WindowStyle::NotStealFocus, |_| TransferTrackingView { |
| 361 | transfer_events: Vec::new(), |
| 362 | }); |
| 363 | |
| 364 | let view = app.add_view(window_1_id, |_| TransferTrackingView { |
| 365 | transfer_events: Vec::new(), |
| 366 | }); |
| 367 | |
| 368 | view.read(&app, |v, _| { |
| 369 | assert!(v.transfer_events.is_empty(), "no transfers yet"); |
| 370 | }); |
| 371 | |
| 372 | let view_id = view.id(); |
| 373 | app.update(|ctx| ctx.transfer_view_to_window(view_id, window_1_id, window_2_id)); |
| 374 | |
| 375 | view.read(&app, |v, _| { |
| 376 | assert_eq!( |
| 377 | v.transfer_events, |
| 378 | vec![(window_1_id, window_2_id)], |
| 379 | "callback should fire with correct window IDs" |
| 380 | ); |
| 381 | }); |
| 382 | }); |
| 383 | } |
| 384 | |
| 385 | #[test] |
| 386 | fn test_weak_view_handle_upgrade_after_transfer() { |
| 387 | #[derive(Default)] |
| 388 | struct TestView { |
| 389 | value: usize, |
| 390 | } |
| 391 | |
| 392 | impl Entity for TestView { |
| 393 | type Event = (); |
| 394 | } |
| 395 | |
| 396 | impl View for TestView { |
| 397 | fn render(&self, _: &AppContext) -> Box<dyn Element> { |
| 398 | Empty::new().finish() |
| 399 | } |
| 400 | |
| 401 | fn ui_name() -> &'static str { |
| 402 | "TestView" |
| 403 | } |
| 404 | } |
| 405 | |
| 406 | impl TypedActionView for TestView { |
| 407 | type Action = (); |
| 408 | } |
| 409 | |
| 410 | App::test((), |mut app| async move { |
| 411 | let (window_1_id, _) = app.add_window(WindowStyle::NotStealFocus, |_| TestView::default()); |
| 412 | let (window_2_id, _) = app.add_window(WindowStyle::NotStealFocus, |_| TestView::default()); |
| 413 | |
| 414 | let view = app.add_view(window_1_id, |_| TestView { value: 42 }); |
| 415 | let weak = view.downgrade(); |
| 416 | |
| 417 | app.read(|ctx| { |
| 418 | let upgraded = weak.upgrade(ctx); |
| 419 | assert!( |
| 420 | upgraded.is_some(), |
| 421 | "weak handle should upgrade before transfer" |
| 422 | ); |
| 423 | assert_eq!( |
| 424 | upgraded.as_ref().map(|v| v.window_id(ctx)), |
| 425 | Some(window_1_id) |
| 426 | ); |
| 427 | }); |
| 428 | |
| 429 | let view_id = view.id(); |
| 430 | app.update(|ctx| ctx.transfer_view_to_window(view_id, window_1_id, window_2_id)); |
| 431 | |
| 432 | app.read(|ctx| { |
| 433 | let upgraded = weak.upgrade(ctx); |
| 434 | assert!( |
| 435 | upgraded.is_some(), |
| 436 | "weak handle should upgrade after transfer" |
| 437 | ); |
| 438 | assert_eq!( |
| 439 | upgraded.as_ref().map(|v| v.window_id(ctx)), |
| 440 | Some(window_2_id), |
| 441 | "upgraded handle should point to new window" |
| 442 | ); |
| 443 | }); |
| 444 | |
| 445 | view.read(&app, |v, _| { |
| 446 | assert_eq!(v.value, 42, "view data preserved"); |
| 447 | }); |
| 448 | }); |
| 449 | } |
| 450 | |
| 451 | #[test] |
| 452 | fn test_transfer_nonexistent_view_returns_false() { |
| 453 | #[derive(Default)] |
| 454 | struct TestView; |
| 455 | |
| 456 | impl Entity for TestView { |
| 457 | type Event = (); |
| 458 | } |
| 459 | |
| 460 | impl View for TestView { |
| 461 | fn render(&self, _: &AppContext) -> Box<dyn Element> { |
| 462 | Empty::new().finish() |
| 463 | } |
| 464 | |
| 465 | fn ui_name() -> &'static str { |
| 466 | "TestView" |
| 467 | } |
| 468 | } |
| 469 | |
| 470 | impl TypedActionView for TestView { |
| 471 | type Action = (); |
| 472 | } |
| 473 | |
| 474 | App::test((), |mut app| async move { |
| 475 | let (window_1_id, _) = app.add_window(WindowStyle::NotStealFocus, |_| TestView); |
| 476 | let (window_2_id, _) = app.add_window(WindowStyle::NotStealFocus, |_| TestView); |
| 477 | |
| 478 | let fake_view_id = EntityId::new(); |
| 479 | let success = |
| 480 | app.update(|ctx| ctx.transfer_view_to_window(fake_view_id, window_1_id, window_2_id)); |
| 481 | assert!(!success, "transfer of nonexistent view should return false"); |
| 482 | }); |
| 483 | } |
| 484 | |
| 485 | #[test] |
| 486 | fn test_transfer_to_same_window_is_noop() { |
| 487 | #[derive(Default)] |
| 488 | struct TestView { |
| 489 | value: usize, |
| 490 | } |
| 491 | |
| 492 | impl Entity for TestView { |
| 493 | type Event = usize; |
| 494 | } |
| 495 | |
| 496 | impl View for TestView { |
| 497 | fn render(&self, _: &AppContext) -> Box<dyn Element> { |
| 498 | Empty::new().finish() |
| 499 | } |
| 500 | |
| 501 | fn ui_name() -> &'static str { |
| 502 | "TestView" |
| 503 | } |
| 504 | } |
| 505 | |
| 506 | impl TypedActionView for TestView { |
| 507 | type Action = (); |
| 508 | } |
| 509 | |
| 510 | App::test((), |mut app| async move { |
| 511 | let (window_id, _) = app.add_window(WindowStyle::NotStealFocus, |_| TestView::default()); |
| 512 | |
| 513 | let view = app.add_view(window_id, |_| TestView { value: 42 }); |
| 514 | let view_id = view.id(); |
| 515 | |
| 516 | let success = app.update(|ctx| ctx.transfer_view_to_window(view_id, window_id, window_id)); |
| 517 | assert!(success, "transfer to same window should return true"); |
| 518 | |
| 519 | app.read(|ctx| { |
| 520 | assert_eq!( |
| 521 | view.window_id(ctx), |
| 522 | window_id, |
| 523 | "view should still be in same window" |
| 524 | ); |
| 525 | assert!( |
| 526 | ctx.windows[&window_id].views.contains_key(&view_id), |
| 527 | "view should still be in window's views map" |
| 528 | ); |
| 529 | }); |
| 530 | |
| 531 | view.update(&mut app, |_, ctx| ctx.emit(1)); |
| 532 | view.read(&app, |v, _| { |
| 533 | assert_eq!(v.value, 42, "view should still work normally"); |
| 534 | }); |
| 535 | }); |
| 536 | } |
| 537 | |
| 538 | #[test] |
| 539 | fn test_transfer_view_drop_and_reference_counting() { |
| 540 | #[derive(Default)] |
| 541 | struct TestView { |
| 542 | value: usize, |
| 543 | } |
| 544 | |
| 545 | impl Entity for TestView { |
| 546 | type Event = (); |
| 547 | } |
| 548 | |
| 549 | impl View for TestView { |
| 550 | fn render(&self, _: &AppContext) -> Box<dyn Element> { |
| 551 | Empty::new().finish() |
| 552 | } |
| 553 | |
| 554 | fn ui_name() -> &'static str { |
| 555 | "TestView" |
| 556 | } |
| 557 | } |
| 558 | |
| 559 | impl TypedActionView for TestView { |
| 560 | type Action = (); |
| 561 | } |
| 562 | |
| 563 | App::test((), |mut app| async move { |
| 564 | let (window_1_id, _) = app.add_window(WindowStyle::NotStealFocus, |_| TestView::default()); |
| 565 | let (window_2_id, _) = app.add_window(WindowStyle::NotStealFocus, |_| TestView::default()); |
| 566 | |
| 567 | let view = app.add_view(window_1_id, |_| TestView { value: 42 }); |
| 568 | let view_id = view.id(); |
| 569 | let view_clone = view.clone(); |
| 570 | |
| 571 | app.update(|ctx| ctx.transfer_view_to_window(view_id, window_1_id, window_2_id)); |
| 572 | |
| 573 | drop(view_clone); |
| 574 | |
| 575 | app.read(|ctx| { |
| 576 | assert!( |
| 577 | ctx.windows[&window_2_id].views.contains_key(&view_id), |
| 578 | "view should still exist after dropping one handle" |
| 579 | ); |
| 580 | assert!( |
| 581 | ctx.view_to_window.contains_key(&view_id), |
| 582 | "view_to_window mapping should still exist" |
| 583 | ); |
| 584 | }); |
| 585 | |
| 586 | view.read(&app, |v, _| { |
| 587 | assert_eq!(v.value, 42, "view data should be intact"); |
| 588 | }); |
| 589 | |
| 590 | drop(view); |
| 591 | |
| 592 | // Trigger cleanup via app.update which calls flush_effects -> remove_dropped_items |
| 593 | app.update(|_| {}); |
| 594 | |
| 595 | // Verify the view was removed from the correct window (window_2, not window_1) |
| 596 | // and that the view_to_window mapping was cleaned up |
| 597 | app.read(|ctx| { |
| 598 | assert!( |
| 599 | !ctx.windows[&window_1_id].views.contains_key(&view_id), |
| 600 | "view should not be in original window" |
| 601 | ); |
| 602 | assert!( |
| 603 | !ctx.windows[&window_2_id].views.contains_key(&view_id), |
| 604 | "view should be removed from target window after drop" |
| 605 | ); |
| 606 | assert!( |
| 607 | !ctx.view_to_window.contains_key(&view_id), |
| 608 | "view_to_window mapping should be cleaned up" |
| 609 | ); |
| 610 | }); |
| 611 | }); |
| 612 | } |
| 613 | |
| 614 | #[test] |
| 615 | fn test_transfer_structural_children_follows_parent() { |
| 616 | #[derive(Default)] |
| 617 | struct TestView { |
| 618 | value: usize, |
| 619 | } |
| 620 | |
| 621 | impl Entity for TestView { |
| 622 | type Event = (); |
| 623 | } |
| 624 | |
| 625 | impl View for TestView { |
| 626 | fn render(&self, _: &AppContext) -> Box<dyn Element> { |
| 627 | Empty::new().finish() |
| 628 | } |
| 629 | |
| 630 | fn ui_name() -> &'static str { |
| 631 | "TestView" |
| 632 | } |
| 633 | } |
| 634 | |
| 635 | impl TypedActionView for TestView { |
| 636 | type Action = (); |
| 637 | } |
| 638 | |
| 639 | App::test((), |mut app| async move { |
| 640 | let (window_1_id, root_1) = |
| 641 | app.add_window(WindowStyle::NotStealFocus, |_| TestView::default()); |
| 642 | let (window_2_id, _) = app.add_window(WindowStyle::NotStealFocus, |_| TestView::default()); |
| 643 | |
| 644 | let parent = root_1.update(&mut app, |_, ctx| { |
| 645 | ctx.add_typed_action_view(|_| TestView { value: 1 }) |
| 646 | }); |
| 647 | |
| 648 | let structural_child = parent.update(&mut app, |_, ctx| { |
| 649 | ctx.add_typed_action_view(|_| TestView { value: 2 }) |
| 650 | }); |
| 651 | |
| 652 | let parent_id = parent.id(); |
| 653 | let child_id = structural_child.id(); |
| 654 | |
| 655 | app.read(|ctx| { |
| 656 | assert!( |
| 657 | ctx.windows[&window_1_id].views.contains_key(&child_id), |
| 658 | "child should initially be in window 1" |
| 659 | ); |
| 660 | }); |
| 661 | |
| 662 | let transferred = |
| 663 | app.update(|ctx| ctx.transfer_view_tree_to_window(parent_id, window_1_id, window_2_id)); |
| 664 | |
| 665 | assert!( |
| 666 | transferred.contains(&parent_id), |
| 667 | "parent should be in transferred list" |
| 668 | ); |
| 669 | assert!( |
| 670 | transferred.contains(&child_id), |
| 671 | "structural child should be in transferred list" |
| 672 | ); |
| 673 | |
| 674 | app.read(|ctx| { |
| 675 | assert!( |
| 676 | ctx.windows[&window_2_id].views.contains_key(&parent_id), |
| 677 | "parent should be in window 2" |
| 678 | ); |
| 679 | assert!( |
| 680 | ctx.windows[&window_2_id].views.contains_key(&child_id), |
| 681 | "structural child should be in window 2" |
| 682 | ); |
| 683 | assert!( |
| 684 | !ctx.windows[&window_1_id].views.contains_key(&parent_id), |
| 685 | "parent should no longer be in window 1" |
| 686 | ); |
| 687 | assert!( |
| 688 | !ctx.windows[&window_1_id].views.contains_key(&child_id), |
| 689 | "structural child should no longer be in window 1" |
| 690 | ); |
| 691 | }); |
| 692 | |
| 693 | structural_child.read(&app, |v, _| { |
| 694 | assert_eq!(v.value, 2, "structural child data should be preserved"); |
| 695 | }); |
| 696 | }); |
| 697 | } |
| 698 | |
| 699 | #[test] |
| 700 | fn test_transfer_structural_grandchildren_follows_transitively() { |
| 701 | #[derive(Default)] |
| 702 | struct TestView { |
| 703 | value: usize, |
| 704 | } |
| 705 | |
| 706 | impl Entity for TestView { |
| 707 | type Event = (); |
| 708 | } |
| 709 | |
| 710 | impl View for TestView { |
| 711 | fn render(&self, _: &AppContext) -> Box<dyn Element> { |
| 712 | Empty::new().finish() |
| 713 | } |
| 714 | |
| 715 | fn ui_name() -> &'static str { |
| 716 | "TestView" |
| 717 | } |
| 718 | } |
| 719 | |
| 720 | impl TypedActionView for TestView { |
| 721 | type Action = (); |
| 722 | } |
| 723 | |
| 724 | App::test((), |mut app| async move { |
| 725 | let (window_1_id, root_1) = |
| 726 | app.add_window(WindowStyle::NotStealFocus, |_| TestView::default()); |
| 727 | let (window_2_id, _) = app.add_window(WindowStyle::NotStealFocus, |_| TestView::default()); |
| 728 | |
| 729 | let parent = root_1.update(&mut app, |_, ctx| { |
| 730 | ctx.add_typed_action_view(|_| TestView { value: 1 }) |
| 731 | }); |
| 732 | |
| 733 | let child = parent.update(&mut app, |_, ctx| { |
| 734 | ctx.add_typed_action_view(|_| TestView { value: 2 }) |
| 735 | }); |
| 736 | |
| 737 | let grandchild = child.update(&mut app, |_, ctx| { |
| 738 | ctx.add_typed_action_view(|_| TestView { value: 3 }) |
| 739 | }); |
| 740 | |
| 741 | let parent_id = parent.id(); |
| 742 | let child_id = child.id(); |
| 743 | let grandchild_id = grandchild.id(); |
| 744 | |
| 745 | let transferred = |
| 746 | app.update(|ctx| ctx.transfer_view_tree_to_window(parent_id, window_1_id, window_2_id)); |
| 747 | |
| 748 | assert!( |
| 749 | transferred.contains(&parent_id), |
| 750 | "parent should be transferred" |
| 751 | ); |
| 752 | assert!( |
| 753 | transferred.contains(&child_id), |
| 754 | "child should be transferred" |
| 755 | ); |
| 756 | assert!( |
| 757 | transferred.contains(&grandchild_id), |
| 758 | "grandchild should be transferred transitively" |
| 759 | ); |
| 760 | |
| 761 | app.read(|ctx| { |
| 762 | assert!(ctx.windows[&window_2_id].views.contains_key(&grandchild_id)); |
| 763 | assert!(!ctx.windows[&window_1_id].views.contains_key(&grandchild_id)); |
| 764 | }); |
| 765 | |
| 766 | grandchild.read(&app, |v, _| { |
| 767 | assert_eq!(v.value, 3, "grandchild data should be preserved"); |
| 768 | }); |
| 769 | }); |
| 770 | } |
| 771 | |
| 772 | #[test] |
| 773 | fn test_transfer_structural_children_does_not_move_unrelated_views() { |
| 774 | #[derive(Default)] |
| 775 | struct TestView; |
| 776 | |
| 777 | impl Entity for TestView { |
| 778 | type Event = (); |
| 779 | } |
| 780 | |
| 781 | impl View for TestView { |
| 782 | fn render(&self, _: &AppContext) -> Box<dyn Element> { |
| 783 | Empty::new().finish() |
| 784 | } |
| 785 | |
| 786 | fn ui_name() -> &'static str { |
| 787 | "TestView" |
| 788 | } |
| 789 | } |
| 790 | |
| 791 | impl TypedActionView for TestView { |
| 792 | type Action = (); |
| 793 | } |
| 794 | |
| 795 | App::test((), |mut app| async move { |
| 796 | let (window_1_id, root_1) = app.add_window(WindowStyle::NotStealFocus, |_| TestView); |
| 797 | let (window_2_id, _) = app.add_window(WindowStyle::NotStealFocus, |_| TestView); |
| 798 | |
| 799 | let parent = root_1.update(&mut app, |_, ctx| ctx.add_typed_action_view(|_| TestView)); |
| 800 | |
| 801 | let structural_child = |
| 802 | parent.update(&mut app, |_, ctx| ctx.add_typed_action_view(|_| TestView)); |
| 803 | |
| 804 | let unrelated = app.add_view(window_1_id, |_| TestView); |
| 805 | |
| 806 | let parent_id = parent.id(); |
| 807 | let child_id = structural_child.id(); |
| 808 | let unrelated_id = unrelated.id(); |
| 809 | |
| 810 | let transferred = |
| 811 | app.update(|ctx| ctx.transfer_view_tree_to_window(parent_id, window_1_id, window_2_id)); |
| 812 | |
| 813 | assert!( |
| 814 | transferred.contains(&parent_id), |
| 815 | "parent should be transferred" |
| 816 | ); |
| 817 | assert!( |
| 818 | transferred.contains(&child_id), |
| 819 | "structural child should be transferred" |
| 820 | ); |
| 821 | assert!( |
| 822 | !transferred.contains(&unrelated_id), |
| 823 | "unrelated view should NOT be transferred" |
| 824 | ); |
| 825 | |
| 826 | app.read(|ctx| { |
| 827 | assert!( |
| 828 | ctx.windows[&window_1_id].views.contains_key(&unrelated_id), |
| 829 | "unrelated view should remain in window 1" |
| 830 | ); |
| 831 | assert!( |
| 832 | !ctx.windows[&window_2_id].views.contains_key(&unrelated_id), |
| 833 | "unrelated view should NOT be in window 2" |
| 834 | ); |
| 835 | }); |
| 836 | }); |
| 837 | } |
| 838 |