Offscreen add attach #25603
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Offscreen add attach #25603
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sammy-SC
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| instance._pendingVisibility |= OffscreenDetached; | ||
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| // Detaching needs to be postoned in case attach is called before next update. | ||
| scheduleMicrotask(() => { |
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Since all this does now is schedule an update, you don't need the scheduleMicrotask call
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I was using scheduleMicrotask to postpone detachment of Offscreen if detach is called in an effect or in render phase. I'm not sure how to do that with scheduleUpdateOnFiber. This is probably just an optimisation.
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acdlite
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I added some tests to illustrate what should happen when multiple attach/detach operations happen in a single event handler, and the corresponding scenario for when they happen inside an effect. They need to be batched into a single operation — similar to how a setState would work. The simplest case to think about is when you call attach, and then immediately detach on the very next line. This should be a no-op. To implement this properly, we need to queue the operations, like we do for other state updates.
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`Offscreen.attach` is imperative API to signal to Offscreen that its
updates should be high priority and effects should be mounted. Coupled
with `Offscreen.detach` it gives ability to manually control Offscreen.
Unlike with mode `visible` and `hidden`, it is developers job to make
sure contents of Offscreen are not visible to users.
`Offscreen.attach` only works if mode is `manual`.
Example uses:
```jsx
let offscreenRef = useRef(null);
<Offscreen mode={'manual'} ref={offscreenRef)}>
<Child />
</Offscreen>
// ------
// Offscreen is attached by default.
// For example user scrolls away and Offscreen subtree is not visible anymore.
offscreenRef.current.detach();
// User scrolls back and Offscreen subtree is visible again.
offscreenRef.current.attach();
```
Co-authored-by: Andrew Clark <git@andrewclark.io>
DiffTrain build for [996e4c0](996e4c0)
[View git log for this commit](https://github.com/facebook/react/commits/996e4c0d56dabab382ca932cd5b8517e63020999)
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Summary: This sync includes the following changes: - **[48b687fc9](facebook/react@48b687fc9 )**: [trusted types][www] Add enableTrustedTypesIntegration flag back in ([#26016](facebook/react#26016)) //<an onion>// - **[9b1423cc0](facebook/react@9b1423cc0 )**: Revert "Hold host functions in var" ([#26079](facebook/react#26079)) //<Samuel Susla>// - **[ce09ace9a](facebook/react@ce09ace9a )**: Improve Error Messages when Access Client References ([#26059](facebook/react#26059)) //<Sebastian Markbåge>// - **[0652bdbd1](facebook/react@0652bdbd1 )**: Add flow types to Maps in ReactNativeViewConfigRegistry.js ([#26064](facebook/react#26064)) //<Samuel Susla>// - **[ee8509801](facebook/react@ee8509801 )**: [cleanup] remove deletedTreeCleanUpLevel feature flag ([#25529](facebook/react#25529)) //<Jan Kassens>// - **[0e31dd028](facebook/react@0e31dd028 )**: Remove findDOMNode www shim ([#25998](facebook/react#25998)) //<Jan Kassens>// - **[379dd741e](facebook/react@379dd741e )**: [www] set enableTrustedTypesIntegration to false ([#25997](facebook/react#25997)) //<Jan Kassens>// - **[555ece0cd](facebook/react@555ece0cd )**: Don't warn about concurrently rendering contexts if we finished rendering ([#22797](facebook/react#22797)) //<Sebastian Silbermann>// - **[0fce6bb49](facebook/react@0fce6bb49 )**: [cleanup] remove feature flags warnAboutDefaultPropsOnFunctionComponents and warnAboutStringRefs ([#25980](facebook/react#25980)) //<Jan Kassens>// - **[7002a6743](facebook/react@7002a6743 )**: [cleanup] remove unused values from ReactFeatureFlags.www-dynamic ([#25575](facebook/react#25575)) //<Jan Kassens>// - **[a48e54f2b](facebook/react@a48e54f2b )**: [cleanup] remove old feature flag warnAboutDeprecatedLifecycles ([#25978](facebook/react#25978)) //<Jan Kassens>// - **[0f4a83596](facebook/react@0f4a83596 )**: Remove duplicate JSResourceReferenceImpl mock ([#25976](facebook/react#25976)) //<Jan Kassens>// - **[c49131669](facebook/react@c49131669 )**: Remove unused Flow suppressions ([#25977](facebook/react#25977)) //<Jan Kassens>// - **[afe6521](facebook/react@afe6521e1 )**: Refactor: remove useless parameter ([#25923](facebook/react#25923)) //<Chris>// - **[34464fb16](facebook/react@34464fb16 )**: Upgrade to Flow 0.196.3 ([#25974](facebook/react#25974)) //<Jan Kassens>// - **[e2424f33b](facebook/react@e2424f33b )**: [flow] enable exact_empty_objects ([#25973](facebook/react#25973)) //<Jan Kassens>// - **[0b4f44302](facebook/react@0b4f44302 )**: [flow] enable enforce_local_inference_annotations ([#25921](facebook/react#25921)) //<Jan Kassens>// - **[0b974418c](facebook/react@0b974418c )**: [Fizz] Fork Fizz instruction set for inline script and external runtime ([#25862](facebook/react#25862)) //<mofeiZ>// - **[5379b6123](facebook/react@5379b6123 )**: Batch sync, default and continuous lanes ([#25700](facebook/react#25700)) //<Tianyu Yao>// - **[bbf4d2211](facebook/react@bbf4d2211 )**: Update import for babel-code-frame in build script ([#25963](facebook/react#25963)) //<Ming Ye>// - **[b83baf63f](facebook/react@b83baf63f )**: Transform updates to support Flow this annotation syntax ([#25918](facebook/react#25918)) //<Jan Kassens>// - **[c2d655207](facebook/react@c2d655207 )**: Unify `use` and `renderDidSuspendDelayIfPossible` implementations ([#25922](facebook/react#25922)) //<Andrew Clark>// - **[48274a43a](facebook/react@48274a43a )**: Remove vestigial Suspense batching logic ([#25861](facebook/react#25861)) //<Andrew Clark>// - **[de7d1c907](facebook/react@de7d1c907 )**: Add `fetchPriority` to `<img>` and `<link>` ([#25927](facebook/react#25927)) //<Steven>// - **[81d4ee9ca](facebook/react@81d4ee9ca )**: reconciler docs: fix small typo - "mode" (instead of "node") ([#25863](facebook/react#25863)) //<satelllte>// - **[5fcf1a4b4](facebook/react@5fcf1a4b4 )**: Bugfix: Synchronous ping during render phase sometimes unwinds the stack, leading to crash ([#25851](facebook/react#25851)) //<Andrew Clark>// - **[2b1fb91a5](facebook/react@2b1fb91a5 )**: ESLint upgrade to use hermes-eslint ([#25915](facebook/react#25915)) //<Jan Kassens>// - **[fabef7a6b](facebook/react@fabef7a6b )**: Resubmit Add HydrationSyncLane ([#25878](facebook/react#25878)) //<Tianyu Yao>// - **[7efa9e597](facebook/react@7efa9e597 )**: Fix unwinding context during selective hydration ([#25876](facebook/react#25876)) //<Tianyu Yao>// - **[84a0a171e](facebook/react@84a0a171e )**: Rename experimental useEvent to useEffectEvent ([#25881](facebook/react#25881)) //<Sebastian Markbåge>// - **[4dda96a40](facebook/react@4dda96a40 )**: [react-www] remove forked bundle ([#25866](facebook/react#25866)) //<Jan Kassens>// - **[9c09c1cd6](facebook/react@9c09c1cd6 )**: Revert "Fork ReactDOMSharedInternals for www ([#25791](facebook/react#25791))" ([#25864](facebook/react#25864)) //<lauren>// - **[996e4c0d5](facebook/react@996e4c0d5 )**: Offscreen add attach ([#25603](facebook/react#25603)) //<Samuel Susla>// - **[b14d7fa4b](facebook/react@b14d7fa4b )**: Add support for setNativeProps to Fabric ([#25737](facebook/react#25737)) //<Samuel Susla>// - **[819687279](facebook/react@819687279 )**: [Float] Fix typo in ReactDOMResourceValidation.js ([#25798](facebook/react#25798)) //<Ikko Ashimine>// - **[5dfc485f6](facebook/react@5dfc485f6 )**: fix tests for when float is off ([#25839](facebook/react#25839)) //<Josh Story>// - **[bfcbf3306](facebook/react@bfcbf3306 )**: toString children of title ([#25838](facebook/react#25838)) //<Sebastian Markbåge>// - **[d4bc16a7d](facebook/react@d4bc16a7d )**: Revert "[react-www] remove forked bundle" ([#25837](facebook/react#25837)) //<Ricky>// - **[d69b2cf82](facebook/react@d69b2cf82 )**: [bug fix] revert values in ReactFiberFlags to keep consistency for devtools ([#25832](facebook/react#25832)) //<Mengdi Chen>// - **[645ae2686](facebook/react@645ae2686 )**: [react-www] remove forked bundle ([#25831](facebook/react#25831)) //<Jan Kassens>// - **[d807eb52c](facebook/react@d807eb52c )**: Revert recent hydration changes ([#25812](facebook/react#25812)) //<Andrew Clark>// - **[2ccfa657d](facebook/react@2ccfa657d )**: Fork ReactDOMSharedInternals for www ([#25791](facebook/react#25791)) //<lauren>// - **[f0534ae94](facebook/react@f0534ae94 )**: Avoid replaying SelectiveHydrationException in dev ([#25754](facebook/react#25754)) //<Tianyu Yao>// - **[7fab379d8](facebook/react@7fab379d8 )**: fix link to ReactDOMHostconfig in reconciler docs ([#25788](facebook/react#25788)) //<Dmitry>// - **[500c8aa08](facebook/react@500c8aa08 )**: Add component name to StrictMode error message ([#25718](facebook/react#25718)) //<Samuel Susla>// - **[353c30252](facebook/react@353c30252 )**: Hold host functions in var ([#25741](facebook/react#25741)) //<Samuel Susla>// Changelog: [General][Changed] - React Native sync for revisions 17f6912...48b687f jest_e2e[run_all_tests] Reviewed By: rubennorte Differential Revision: D42855483 fbshipit-source-id: c244a595bb2d490a23b333c1b16d04a459ec94fc
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May 22, 2023
Summary: This sync includes the following changes: - **[48b687fc9](facebook/react@48b687fc9 )**: [trusted types][www] Add enableTrustedTypesIntegration flag back in ([facebook#26016](facebook/react#26016)) //<an onion>// - **[9b1423cc0](facebook/react@9b1423cc0 )**: Revert "Hold host functions in var" ([facebook#26079](facebook/react#26079)) //<Samuel Susla>// - **[ce09ace9a](facebook/react@ce09ace9a )**: Improve Error Messages when Access Client References ([facebook#26059](facebook/react#26059)) //<Sebastian Markbåge>// - **[0652bdbd1](facebook/react@0652bdbd1 )**: Add flow types to Maps in ReactNativeViewConfigRegistry.js ([facebook#26064](facebook/react#26064)) //<Samuel Susla>// - **[ee8509801](facebook/react@ee8509801 )**: [cleanup] remove deletedTreeCleanUpLevel feature flag ([facebook#25529](facebook/react#25529)) //<Jan Kassens>// - **[0e31dd028](facebook/react@0e31dd028 )**: Remove findDOMNode www shim ([facebook#25998](facebook/react#25998)) //<Jan Kassens>// - **[379dd741e](facebook/react@379dd741e )**: [www] set enableTrustedTypesIntegration to false ([facebook#25997](facebook/react#25997)) //<Jan Kassens>// - **[555ece0cd](facebook/react@555ece0cd )**: Don't warn about concurrently rendering contexts if we finished rendering ([facebook#22797](facebook/react#22797)) //<Sebastian Silbermann>// - **[0fce6bb49](facebook/react@0fce6bb49 )**: [cleanup] remove feature flags warnAboutDefaultPropsOnFunctionComponents and warnAboutStringRefs ([facebook#25980](facebook/react#25980)) //<Jan Kassens>// - **[7002a6743](facebook/react@7002a6743 )**: [cleanup] remove unused values from ReactFeatureFlags.www-dynamic ([facebook#25575](facebook/react#25575)) //<Jan Kassens>// - **[a48e54f2b](facebook/react@a48e54f2b )**: [cleanup] remove old feature flag warnAboutDeprecatedLifecycles ([facebook#25978](facebook/react#25978)) //<Jan Kassens>// - **[0f4a83596](facebook/react@0f4a83596 )**: Remove duplicate JSResourceReferenceImpl mock ([facebook#25976](facebook/react#25976)) //<Jan Kassens>// - **[c49131669](facebook/react@c49131669 )**: Remove unused Flow suppressions ([facebook#25977](facebook/react#25977)) //<Jan Kassens>// - **[afe6521](facebook/react@afe6521e1 )**: Refactor: remove useless parameter ([facebook#25923](facebook/react#25923)) //<Chris>// - **[34464fb16](facebook/react@34464fb16 )**: Upgrade to Flow 0.196.3 ([facebook#25974](facebook/react#25974)) //<Jan Kassens>// - **[e2424f33b](facebook/react@e2424f33b )**: [flow] enable exact_empty_objects ([facebook#25973](facebook/react#25973)) //<Jan Kassens>// - **[0b4f44302](facebook/react@0b4f44302 )**: [flow] enable enforce_local_inference_annotations ([facebook#25921](facebook/react#25921)) //<Jan Kassens>// - **[0b974418c](facebook/react@0b974418c )**: [Fizz] Fork Fizz instruction set for inline script and external runtime ([facebook#25862](facebook/react#25862)) //<mofeiZ>// - **[5379b6123](facebook/react@5379b6123 )**: Batch sync, default and continuous lanes ([facebook#25700](facebook/react#25700)) //<Tianyu Yao>// - **[bbf4d2211](facebook/react@bbf4d2211 )**: Update import for babel-code-frame in build script ([facebook#25963](facebook/react#25963)) //<Ming Ye>// - **[b83baf63f](facebook/react@b83baf63f )**: Transform updates to support Flow this annotation syntax ([facebook#25918](facebook/react#25918)) //<Jan Kassens>// - **[c2d655207](facebook/react@c2d655207 )**: Unify `use` and `renderDidSuspendDelayIfPossible` implementations ([facebook#25922](facebook/react#25922)) //<Andrew Clark>// - **[48274a43a](facebook/react@48274a43a )**: Remove vestigial Suspense batching logic ([facebook#25861](facebook/react#25861)) //<Andrew Clark>// - **[de7d1c907](facebook/react@de7d1c907 )**: Add `fetchPriority` to `<img>` and `<link>` ([facebook#25927](facebook/react#25927)) //<Steven>// - **[81d4ee9ca](facebook/react@81d4ee9ca )**: reconciler docs: fix small typo - "mode" (instead of "node") ([facebook#25863](facebook/react#25863)) //<satelllte>// - **[5fcf1a4b4](facebook/react@5fcf1a4b4 )**: Bugfix: Synchronous ping during render phase sometimes unwinds the stack, leading to crash ([facebook#25851](facebook/react#25851)) //<Andrew Clark>// - **[2b1fb91a5](facebook/react@2b1fb91a5 )**: ESLint upgrade to use hermes-eslint ([facebook#25915](facebook/react#25915)) //<Jan Kassens>// - **[fabef7a6b](facebook/react@fabef7a6b )**: Resubmit Add HydrationSyncLane ([facebook#25878](facebook/react#25878)) //<Tianyu Yao>// - **[7efa9e597](facebook/react@7efa9e597 )**: Fix unwinding context during selective hydration ([facebook#25876](facebook/react#25876)) //<Tianyu Yao>// - **[84a0a171e](facebook/react@84a0a171e )**: Rename experimental useEvent to useEffectEvent ([facebook#25881](facebook/react#25881)) //<Sebastian Markbåge>// - **[4dda96a40](facebook/react@4dda96a40 )**: [react-www] remove forked bundle ([facebook#25866](facebook/react#25866)) //<Jan Kassens>// - **[9c09c1cd6](facebook/react@9c09c1cd6 )**: Revert "Fork ReactDOMSharedInternals for www ([facebook#25791](facebook/react#25791))" ([facebook#25864](facebook/react#25864)) //<lauren>// - **[996e4c0d5](facebook/react@996e4c0d5 )**: Offscreen add attach ([facebook#25603](facebook/react#25603)) //<Samuel Susla>// - **[b14d7fa4b](facebook/react@b14d7fa4b )**: Add support for setNativeProps to Fabric ([facebook#25737](facebook/react#25737)) //<Samuel Susla>// - **[819687279](facebook/react@819687279 )**: [Float] Fix typo in ReactDOMResourceValidation.js ([facebook#25798](facebook/react#25798)) //<Ikko Ashimine>// - **[5dfc485f6](facebook/react@5dfc485f6 )**: fix tests for when float is off ([facebook#25839](facebook/react#25839)) //<Josh Story>// - **[bfcbf3306](facebook/react@bfcbf3306 )**: toString children of title ([facebook#25838](facebook/react#25838)) //<Sebastian Markbåge>// - **[d4bc16a7d](facebook/react@d4bc16a7d )**: Revert "[react-www] remove forked bundle" ([facebook#25837](facebook/react#25837)) //<Ricky>// - **[d69b2cf82](facebook/react@d69b2cf82 )**: [bug fix] revert values in ReactFiberFlags to keep consistency for devtools ([facebook#25832](facebook/react#25832)) //<Mengdi Chen>// - **[645ae2686](facebook/react@645ae2686 )**: [react-www] remove forked bundle ([facebook#25831](facebook/react#25831)) //<Jan Kassens>// - **[d807eb52c](facebook/react@d807eb52c )**: Revert recent hydration changes ([facebook#25812](facebook/react#25812)) //<Andrew Clark>// - **[2ccfa657d](facebook/react@2ccfa657d )**: Fork ReactDOMSharedInternals for www ([facebook#25791](facebook/react#25791)) //<lauren>// - **[f0534ae94](facebook/react@f0534ae94 )**: Avoid replaying SelectiveHydrationException in dev ([facebook#25754](facebook/react#25754)) //<Tianyu Yao>// - **[7fab379d8](facebook/react@7fab379d8 )**: fix link to ReactDOMHostconfig in reconciler docs ([facebook#25788](facebook/react#25788)) //<Dmitry>// - **[500c8aa08](facebook/react@500c8aa08 )**: Add component name to StrictMode error message ([facebook#25718](facebook/react#25718)) //<Samuel Susla>// - **[353c30252](facebook/react@353c30252 )**: Hold host functions in var ([facebook#25741](facebook/react#25741)) //<Samuel Susla>// Changelog: [General][Changed] - React Native sync for revisions 17f6912...48b687f jest_e2e[run_all_tests] Reviewed By: rubennorte Differential Revision: D42855483 fbshipit-source-id: c244a595bb2d490a23b333c1b16d04a459ec94fc
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Offscreen.attachis imperative API to signal to Offscreen that its updates should be high priority and effects should be mounted. Coupled withOffscreen.detachit gives ability to manually control Offscreen. Unlike with modevisibleandhidden, it is developers job to make sure contents of Offscreen are not visible to users.Offscreen.attachonly works if mode ismanual.Example uses: