Summary:
React Native ScrollViews are flipped upside down when the prop inverted is set to true. This is the root of a bug: tapping on the status bar in iOS should scroll the Flatlist up to the top but currently it does to the bottom.
The solution proposed is to detect natively if the ScrollView is inverted, on such case, prevent it from scrolling it to the beginning of the ScrollView (as a non-inverted ScrollView would do) and force a scroll to the end of it.
I've been careful enough not to force the scroll if the user explicitly selected not to do it or if it's happening in a nested ScrollView, as it is the default behaviour in iOS.
Fixes https://github.com/facebook/react-native/issues/21126
## Changelog
[iOS] [Fixed] - Inverted ScrollViews scroll to their bottom when the status bar is pressed
Pull Request resolved: https://github.com/facebook/react-native/pull/27574
Test Plan:
- on iOS, add a ScrollView and put enough content to overflow the screen size so it can be scrolled
- add the prop `inverted={true}` to the ScrollView
- go to the screen the Scrollview is in and press the status bar
- it should scroll to top (previously it scrolled to the bottom)

Differential Revision: D19185270
Pulled By: hramos
fbshipit-source-id: 5445093ff38f4ba4082f1d883d8ed087e9565eaf
Summary: This diff reverts the iOS LogBox module back to the UIWindow strategy used by Redbox.
Reviewed By: sammy-SC
Differential Revision: D19941390
fbshipit-source-id: 4aea09137ea9e8bfc166a733272647a79102bf35
Summary:
Starting on iOS 13, a View Controller presented modally will have a "bottom sheet" style unless it's explicitly presented full screen.
Before this, modals on iOS were only being dismissed programatically by setting `visible={false}`. However, now that the dismissal can happen on the OS side, we need a callback to be able to update the state.
This PR reuses the `onRequestClose` prop already available for tvOS and Android, and makes it work on iOS for this use case.
Should fix https://github.com/facebook/react-native/issues/26892
## Changelog
[iOS] [Added] - Add support for onRequestClose prop to Modal on iOS 13+
Pull Request resolved: https://github.com/facebook/react-native/pull/27618
Test Plan:
I tested this using the RNTester app with the Modal example:
1. Select any presentation style other than the full screen ones
2. Tap Present and the modal is presented
3. Swipe down on the presented modal until dismissed
4. Tap Present again and a second modal should be presented

Differential Revision: D19235758
Pulled By: shergin
fbshipit-source-id: c0f1d946c77ce8d1baab209eaef7eb64697851df
Summary:
In https://github.com/facebook/react-native/issues/25427, radex added initial support for running React Native projects on macOS via Catalyst. However, `RCTWebSocket` was disabled for that target because of some compilation issues. This meant that running projects via a connection to the packager wasn't possible: no live reload, and projects must be run in "Release" mode. It also meant making manual changes to Xcode projects deploying to macOS and scattering a number of conditional checks throughout the codebase.
In this change, I've implemented support for `RCTWebSocket` on the macOS target and re-enabled the affected features. Live reload and the inspector now work for macOS targets. Manual modifications of Xcode build settings are no longer necessary for react-native projects running on macOS.

### Limitations
There's no binding which displays the developer menu (since there's no shake event on macOS). We'll probably want to add one, perhaps to the menu bar.
I've chosen not to commit the modifications to RNTester which enable macOS support, since that would imply more "official" support for this target than I suspect you all would like to convey. I'm happy to add those chunks if it would be helpful.
## Changelog
[iOS] [Added] - Added web socket support for macOS (Catalyst), enabling debug builds and live reload
Pull Request resolved: https://github.com/facebook/react-native/pull/27469
Test Plan:
* Open RNTester/RNTester.xcodeproj with Xcode 11.2.1, run it like a normal iOS app -- make sure it compiles and runs correctly (no regression)
* Select "My Mac" as device target, and run. You may need to configure a valid development team to make signing work.
* RNTester should run fine with no additional configuration. Modify a file in RNTester, note that live reload is now working.
* Test the developer inspector. To display the developer menu, you'll need to manually show it; here's an example diff which does that:
```
diff --git a/RNTester/js/RNTesterApp.ios.js b/RNTester/js/RNTesterApp.ios.js
index 8245a68d12..a447ad3b1b 100644
--- a/RNTester/js/RNTesterApp.ios.js
+++ b/RNTester/js/RNTesterApp.ios.js
@@ -19,6 +19,8 @@ const React = require('react');
const SnapshotViewIOS = require('./examples/Snapshot/SnapshotViewIOS.ios');
const URIActionMap = require('./utils/URIActionMap');
+import NativeDevMenu from '../../Libraries/NativeModules/specs/NativeDevMenu';
+
const {
AppRegistry,
AsyncStorage,
@@ -143,6 +145,7 @@ class RNTesterApp extends React.Component<Props, RNTesterNavigationState> {
UNSAFE_componentWillMount() {
BackHandler.addEventListener('hardwareBackPress', this._handleBack);
+ NativeDevMenu.show();
}
componentDidMount() {
```
Reviewed By: sammy-SC
Differential Revision: D18945861
Pulled By: hramos
fbshipit-source-id: edcf02c5803742c89a845a3e5d72bc7dacae839f
Summary:
On slower devices , 0.5s is not fast enough and we frequently render a black screen. Let's bump the sync rendering timeout to 1s.
Changelog: [Internal]
Reviewed By: sammy-SC
Differential Revision: D19282619
fbshipit-source-id: 0d9ae60f4869b0de7c4523c2cb33fbbf320c6438
Summary:
Update LogBox on iOS to lazily initialize, using a synchronous RCTSurface, behind RCTSharedApplication checks.
This results in faster of LogBox, without keeping around a long lived window in the background, and only used when LogBox is used.
On Android, we still start the react app in the background but we create a dialog when it's shown and then destroy it when it's hidden. Once we have the sync APIs on android we can update it to use the same strategy.
Changelog: [Internal]
Reviewed By: fkgozali
Differential Revision: D18925538
fbshipit-source-id: 1a72c39aa0fc26c8ba657d36c7fa7bc0ae777eb9
Summary:
If redbox flag is disabled, don't initialize LogBox window even if the native module exists. This makes the module noop.
Changelog: [Internal]
Reviewed By: shergin
Differential Revision: D18927309
fbshipit-source-id: 3dc6c08ed537925594cabf77d1142568d47132e9
Summary:
Fixes https://github.com/facebook/react-native/issues/26830 by removing version gating around `RCTUserInterfaceStyleDidChangeNotification` sent by `RCTRootView` and observing that notif for `Dimensions` changes.
Also centralizes `RCTUserInterfaceStyleDidChangeNotification` constant definition in new `RCTConstants` file.
Changelog:
[iOS] [Fixed] - `Dimensions` module now updates on initial split screen
Reviewed By: sammy-SC
Differential Revision: D18931098
fbshipit-source-id: e9784be3f544f3b10360fbc2d6ad0324273b1a8f
Summary:
This diff adds a NativeLogBox module implementation on iOS to manage rendering LogBox the way we render RedBox, except rendering a React Native component instead of a native view.
The strategy here is:
- initialize: will create a hidden window (the way redbox does) and render the LogBox to it
- show: will show the window
- hide: will hide the window
Most of this is copied from the way RedBox works, the difference here is that we eagerly initialize the window with the `initialize` function so that it's warm by the time LogBox needs to render.
Changelog: [Internal]
Reviewed By: RSNara
Differential Revision: D18750008
fbshipit-source-id: 013e55ded55c8572bb08e0219ff4cd0060ebe0da
Summary:
`accessibilityTraits` was missing, this diff adds it.
Also there is a name mis match, in javascript it is called `accessibilityRole`.
Changelog: [Internal]
Reviewed By: JoshuaGross
Differential Revision: D18857668
fbshipit-source-id: 10656e8fb4e8c1d771a72c7f354b845e41cfc313
Summary:
We are seeing some non-trivial amount of crashes happened because `[RCTSurfacePresenter synchronouslyUpdateViewOnUIThread:props:]` requests a Component Descriptor which does not register in the registry.
And the problem here is that ComponentDescriptors are not being designed to be used outside of C++ UIManager, and we only use that in RCTSurfacePresenter only because it's an old workaround that makes Native Animation Driver works with Fabric.
Messing with ComponentDescriptors are in general dangerous. Accessing them outside of UIManager means that they might be deallocated at any time, extending their lifetime will cause other crashes on the other side. So, that's why this is "BROKEN".
This diff does not make the code worse, it just designates the problem that was there for a long time, so it kinda makes it better.
We don't know for sure why some ComponentDescriptors are not registered but this diff at least makes it not crash in such case.
Changelog: [Internal] Fabric-specific internal change.
Reviewed By: JoshuaGross
Differential Revision: D18869651
fbshipit-source-id: 9d945ac7a2bd24a69a9bbb83b4fdd3cd19808f87
Summary:
It closes https://github.com/facebook/react-native/issues/24855
In the endRefreshProgrammatically of RCTRefreshControl.m there is calculation for content offset when spinner is shown CGPoint offset = {scrollView.contentOffset.x, scrollView.contentOffset.y - self.frame.size.height};
However self.frame.size.height is always 0 and therefore spinner is not visible
This change should fix that
Since the owner of the following PR is quite busy and won't be able to resolve the merge conflict anytime soon, I created this PR here to get the fix merged soon.
Ref: https://github.com/facebook/react-native/pull/27236
Thanks to [IgnorancePulls](https://github.com/IgnorancePulls)
## Changelog
[iOS] [Fixed] - Fix spinner visibility on beginRefreshingProgrammatically
Pull Request resolved: https://github.com/facebook/react-native/pull/27397
Test Plan:
IOS tests passed
Check whether this issue is reproduced or not for the repro which is described inside the issue.
https://github.com/facebook/react-native/issues/24855
Reviewed By: sammy-SC
Differential Revision: D18801307
Pulled By: hramos
fbshipit-source-id: d12af236778441a136dbe6b03dfd3495a465ae0f
Summary:
This diff allows re-connecting to the debugger websocket after reloading so that if, for example, metro has restarted, we'll reconnect to allow for debugging. Previously you would need to kill the app and re-open it to re-register the debugger websocket.
Changelog: [iOS] [Fixed] Reconnect to debugger websocket after metro is restarted.
Reviewed By: motiz88
Differential Revision: D18820399
fbshipit-source-id: ddbfa4476e70a6313c877a050ef2d77c04d1657e
Summary:
Adds requiresMainQueueSetup YES to top 16 components warning to help clean up the console. This should cut down ~50% of native warnings from React Native.
This should not change any behavior, just make the existing behavior explicit.
Changelog: [Internal]
Reviewed By: mmmulani
Differential Revision: D18774349
fbshipit-source-id: 5a74967280812ebfd859d7d976487d264b5820c7
Summary:
This diff disables the feature that propagates ScrollView's content offset to ShadowNode hierarchy making measuring content-offset-aware.
Seems that feature breaks FlatList because it does not expect measure calls to be content-offset-aware. We need to validate which legacy `measure*` calls should be content-offset-aware and which should not, and then verify that actual feature works (it's not clear why it worked with FlatList before) well before re-enabling this.
For now, the most safer choice is to disable this feature because I don't think some call sites actually rely on it now.
Changelog: [Internal] Fabric-specific internal change.
Reviewed By: sammy-SC
Differential Revision: D18777939
fbshipit-source-id: 20d6c1081e7d2cc3b5a7a172ed947a9ae9cdfaab
Summary:
This diff moves the delegate splitter from RCTScrollViewComponentView class to RCTEnhancedScrollView. Now, it's a key feature of RCTEnhancedScrollView.
We need this to make `delegate` property of our UIScrollView subclass as resilient to any abuse as possible. E.g., if some other part of the app, unrelated to RN (e.g. BottomSheet component), nils the property, all dependent RN specific infra should continue to work. To make it possible, we make an exposed property to use the internal delegate splitter instead of providing direct access to the property of a superclass.
Changelog: [Internal] Fabric-specific internal change.
Reviewed By: sammy-SC
Differential Revision: D18752886
fbshipit-source-id: 04ec4758afefb8e17481d69471d53c61ab396698
Summary:
Surprisingly, `UITouch::view` property might be nil in some cases (the documentation does not specify in which ones), and that actually happens. That breaks the calculation of a touch position relative to a view on which the touch began. This diff implements storing the view inside ActiveTouch, so we always can access it when we need it. That's similar to how it's implemented in Paper's TouchHandler.
Changelog: [Internal] Fabric-specific internal change.
Reviewed By: sammy-SC
Differential Revision: D18752887
fbshipit-source-id: b412047132238ab4fc265e6c4fbcfb732ed27518
Summary:
Since extensions does not have access to sharedApplication, give them an option to set the presentedViewController.
This will allow modules such as RCTAlertsManager to function correctly in extensions.
Changelog: [General] [Added] - Added RCTUtilsUIOverride as a way to shortcut obtaining presentedViewController from sharedApplication to a supplied view controller for extensions.
Reviewed By: PeteTheHeat
Differential Revision: D18620886
fbshipit-source-id: c752a6e328588f388e23be5270bf7da277182cca
Summary:
Changelog: [Internal]
Load components only if they are used. This way we avoid upfront cost associated with loading components that are not used.
Reviewed By: fkgozali
Differential Revision: D18504437
fbshipit-source-id: 815dd0799f87e254ce0b899ee52a9bec8da45451
Summary:
RCTDevLoadingView wasn't hooked up to the codegen. This diff makes RCTDevLoadingView type-safe and also makes it TurboModule-compatible.
Changelog:
[iOS][Added] - Make RCTDevLoadingView TurboModule-compatible
Reviewed By: PeteTheHeat
Differential Revision: D16969764
fbshipit-source-id: 47e6682eea3fc49d3f0448c636b5f616d5bce220
Summary:
Changelog: [Internal]
Introduce native command `setNativeRefreshing`, it has the word Native in order to avoid name conflict with setRefreshing in Android implementation. Even this component is iOS only, it would make it easier to merge them in the future.
Introduce `RCTRefreshableProtocol` and make `RCTRefreshControl` and `RCTPullToRefreshViewComponentView` to conform to the protocol so view manager can forward command to both, Paper and Fabric component.
Reviewed By: mmmulani
Differential Revision: D18475804
fbshipit-source-id: 4c19225784efc931b7b8f2d2671cc839bce429bf
Summary:
We see a quite small but probably dangerous crash in RCTMountingTransactionObserverCoordinator, it's unclear why exactly it happens but seems it's somehow connected with a shape of RCTComponentViewDescriptor struct.
Specifying storage attribute (`__strong`) correctly/explicitly might fix the issue.
Changelog: [Internal] Fabric-specific internal change.
Reviewed By: sammy-SC
Differential Revision: D18567763
fbshipit-source-id: 57d9f96c4609a38ddf44ce02df53f2d713dfb116
Summary:
Changelog: [Internal]
In paper implementation:
`accessibilityActivate` returns NO in case `onAccessibilityTap` is nil.
In Fabric we have no option to detect whether `onAccessibilityTap` is nil or isn't but we don't want to prevent VoiceOver from tapping an element. This could potentially trigger action associated with element twice.
Let's say you have `onPress` and `onAccessibilityTap`, it will trigger both if you trigger action through VoiceOver.
Reviewed By: shergin
Differential Revision: D18572432
fbshipit-source-id: c5ac002317c798a10045b6f05738299d0ae27456
Summary:
Just asserts to be sure that we don't over-insert or over-erase to/from the collection.
Changelog: [Internal] Fabric-specific internal change.
Reviewed By: sammy-SC
Differential Revision: D18567732
fbshipit-source-id: 569dbce6e62380ae3a0716448ad10bf418aa4f9c
Summary:
The removed code is fragments of one of failed approches to implement the functionality of RCTMountingTransactionObserverCoordinator.
Changelog: [Internal] Fabric-specific internal change.
Reviewed By: sammy-SC
Differential Revision: D18567733
fbshipit-source-id: cd7d6abc91394a2755866c35ff43d2c4f0271470
Summary:
`onLoadEnd` event should be called when load either succeeds or fails.
Before the fix, we didn't call it on error case.
Changelog: [Internal] Fabric-specific internal change.
Reviewed By: sammy-SC
Differential Revision: D18566996
fbshipit-source-id: 92727e91be167eb1e8eec4a40e90097972097c05
Summary:
Imagine a case where we initiate a synchronous state update right in the middle of the mount transaction. With the current implementation, the mount transaction caused by the change will be mounted right inside the in-flight transaction, which will probably cause a crash or incorrect mounting side-effects (which will cause a crash later).
Instead of executing all mounting instructions cased by the state change, we actually need to execute them right after the end of the current transaction (synchronously, inside the same main run loop tick).
This diff implements exactly this.
Changelog: [Internal] Fabric-specific internal change.
Reviewed By: mdvacca
Differential Revision: D18444730
fbshipit-source-id: 3e777a7aa70ff28205d40588970c7478869b6899