Summary:The 200ms timeout was causing resource issues and causing a lot of overhead when you're not running the devtools, since it will basically create a new socket every 200ms.
Also clean up the way we do logging so it's completely compiled out in prod, and standardize all the names we use for threading to lowercase react.
Reviewed By: frantic
Differential Revision: D3115975
fb-gh-sync-id: e6e51c0621d8e9fc4eadb864acd678b8b5d322a1
fbshipit-source-id: e6e51c0621d8e9fc4eadb864acd678b8b5d322a1
Summary:It was hard to understand which parts of the shadowview API are designed to be called only on the root view, and which were applicable to any view.
This diff extracts rootview-specific logic out into a new RCTRootShadowView class.
Reviewed By: majak
Differential Revision: D3063905
fb-gh-sync-id: ef890cddfd7625fbd4bf5454314b441acdb03ac8
shipit-source-id: ef890cddfd7625fbd4bf5454314b441acdb03ac8
Summary:Because the source of truth for backgroundColor is the shadow view, it's possible for the default RCTView backgroundColor to get overwritten by the current shadowView backgroundColor when the view is first created. This overridden value will then be used as the default whenever the background color is reset, which may not be be appropriate for other components that use RCTView.
This diff fixes the bug by ensuring that the view props (and therefore the default color) are set *before* the background color is propagated from the shadowView.
Reviewed By: furdei
Differential Revision: D3064128
fb-gh-sync-id: ac36007c094c7201a5c4fd93399dee4d3eb9a043
shipit-source-id: ac36007c094c7201a5c4fd93399dee4d3eb9a043
Summary:The UICollectionView example is actually my use-case, which is discussed in a
bit more detail [here](https://github.com/alloy/ReactNativeExperiments/issues/2).
----
This is useful when wrapping native iOS components that determine their
own suggested size and which would be too hard/unnecessary to replicate
in the shadow view. For instance a `UICollectionView` that after layout
will update its `contentSize`, which could be used to suggest a size to
the shadow view.
The reason for adding it to -[RCTShadowView setFrame:] is mainly so it
can be used via the existing -[RCTUIManager setFrame:forView:] API and
because it might not be a feature you want to expose too prominently.
An origin of `{ NAN, NAN }` is used as a sentinel to indicate that the
frame should be used as a size suggestion. The size portion of the rect
may contain a `NAN` to skip that dimension or a suggested value for the
dimension which will be used if no explicit styling has been assigned.
Examples:
* Without any expl
Closes https://github.com/facebook/react-native/pull/6114
Differential Revision: D2994796
Pulled By: nicklockwood
fb-gh-sync-id: 6dd3dd86a352ca7d31a0da38bc38a2859ed0a410
shipit-source-id: 6dd3dd86a352ca7d31a0da38bc38a2859ed0a410
Summary: When embedding in a hybrid app, we sometimes present new modal views or windows that have a different frame from the original root view. This API allows us to get coordinates in the application's window frame, which should be valid in any fullscreen view.
Reviewed By: majak
Differential Revision: D2939827
fb-gh-sync-id: 06b93cc2cb3519a25819c6efa445c779314dd673
shipit-source-id: 06b93cc2cb3519a25819c6efa445c779314dd673
Summary:The `uiBlockToAmendWithShadowViewRegistry:` is called on every single view manager, on every single layout pass. This causes all view managers to be eagerly intiialized, even if not being used.
In practice very few modules actually use this method, so by checking if the method is implemented before calling it, we can eliminate most of this work.
(Hopefully in future we can get ride of this method altogether, but right now it's integral to the way that text layout is implemented).
Reviewed By: majak, javache
Differential Revision: D2982181
fb-gh-sync-id: 818d0aac61197df89263c919c2c80a003e293ac5
shipit-source-id: 818d0aac61197df89263c919c2c80a003e293ac5
Summary:Unfortunately the 'screen' option in the `UIManager.takeSnapshot` API appears to work only on the iOS simulator, not on an actual device.
This diff removes the 'screen' option until a solution can be found that works on the device.
(Taking a snapshot of the window still works fine - it just won't include the status bar, etc.)
Reviewed By: javache
Differential Revision: D2971091
fb-gh-sync-id: 026b9d4eb2f59f686f58c18a16381ff325df612b
shipit-source-id: 026b9d4eb2f59f686f58c18a16381ff325df612b
Summary:This adds a `takeSnapshot` method to UIManager that can be used to capture screenshots as an image.
The takeSnapshot method accepts either 'screen', 'window' or a view ref as an argument.
You can also specify the size, format and quality of the captured image.
I've added an example of capturing a screenshot at UIExplorer > Snapshot / Screenshot.
I've also added an example of sharing a screenshot to the UIExplorer > ActionSheetIOS demo.
Reviewed By: javache
Differential Revision: D2958351
fb-gh-sync-id: d2eb93fea3297ec5aaa312854dd6add724a7f4f8
shipit-source-id: d2eb93fea3297ec5aaa312854dd6add724a7f4f8
Summary:
We were executing all the updateBlocks for every frame that was updated in the UI flush. This would quickly give you an explosive number of block calls when loading complex views.
This update block is only really used by text to propagate padding, even though the actual insets are mostly just 0.
public
Reviewed By: nicklockwood
Differential Revision: D2848968
fb-gh-sync-id: e43c529c2bb9729e2b779bf4abefeed58775cc2e
Summary:
public
Android implement ViewManager methods via a dispatch method on UIManager, whereas iOS implements them by exposing the methods on the view manager modules directly.
This diff polyfills Android's implementation on top of the iOS implementation, allowing the same JS API to be used for both.
Reviewed By: javache
Differential Revision: D2803020
fb-gh-sync-id: 0da0544e593dc936467d16ce957a77f7ca41355b
Summary:
fixes#3106
Having -1 would trigger callback one frame early causing it to be ignored on the next frame.
Closes https://github.com/facebook/react-native/pull/3190
Reviewed By: svcscm
Differential Revision: D2783700
Pulled By: mkonicek
fb-gh-sync-id: 02070f70915055aec3b1543a8d553f2680438611
Summary:
public
Most of the time - especially during app startup - when we call UIManager.manageChildren(), we are actually just adding the first set of children to a newly created view.
This case is already optimized for in the JS code, by memoizing index arrays at various sizes, but this is not especially efficient since it is still sending an array of indices with each call that could be easily inferred on the native side instead.
I've added a hybrid native/JS optimization that improves the performance for this case. It's not a huge win in terms of time saved, but benchmarks show improvements in the ~1% range for several of the app startup metrics.
Reviewed By: tadeuzagallo
Differential Revision: D2757388
fb-gh-sync-id: 74f0cdbba93af2c04d69b192a8c2cc5cf429fa09
Summary:
public
Thanks to the new lazy initialization system for modules, `RCTDidCreateNativeModules` no longer does what the name implies.
Previously, `RCTDidCreateNativeModules` was fired after all native modules had been initialized. Now, it simply fires each time the bridge is reloaded. Modules are created on demand when they are needed, so most of the assumptions about when `RCTDidCreateNativeModules` will fire are now incorrect.
This diff deprecates `RCTDidCreateNativeModules`, and adds a new notification, `RCTDidInitializeModuleNotification`, which fires each time a module a new module is instantiated.
If you need to access a module at any time you can just call `-[bridge moduleForClass:]` and the module will be instantiated on demand. If you want to access a module *only* after it has already been instantiated, you can use the `RCTDidInitializeModuleNotification` notification.
Reviewed By: tadeuzagallo
Differential Revision: D2755036
fb-gh-sync-id: 25bab6d5eb6fcd35d43125ac45908035eea01487
Summary:
A component can be backed by native "node" that can change its internal state, which would result in a new UI after the next layout. Since js has no way of knowing that this has happened it wouldn't trigger a layout if nothing in js world has changed. Therefore we need a way how to trigger layout from native code.
This diff does it by adding methods `layoutIfNeeded` on the uimanager and `isBatchActive` on the bridge.
When `layoutIfNeeded` is called it checks whether a batch is in progress. If it is we do nothing, since at it's end layout happens. If a batch is not in progress we immidiately do layout.
I went with the easiest way how to implement this - `isBatchActive` is a public method on the bridge. It's not ideal, but consistent with other methods for modules.
public
Reviewed By: jspahrsummers, nicklockwood
Differential Revision: D2748896
fb-gh-sync-id: f3664c4af980d40a463b538e069b26c9ebad6300
Summary:
public
This diff replaces the RegEx module method parser with a handwritten recursive descent parser that's faster and easier to maintain.
The new parser is ~8 times faster when tested on the UIManager.managerChildren() method, and uses ~1/10 as much RAM.
The new parser also supports lightweight generics, and is more tolerant of white space.
(This means that you now can – and should – use types like `NSArray<NSString *> *` for your exported properties and method arguments, instead of `NSStringArray`).
Reviewed By: jspahrsummers
Differential Revision: D2736636
fb-gh-sync-id: f6a11431935fa8acc8ac36f3471032ec9a1c8490
Summary:
public
Currently, we wait to invoke `-flushUIBlocks` until the JavaScript batch to native has completed. This means we may be waiting an unnecessarily long time to perform view hierarchy changes and prop changes.
By instead invoking this after each chunk of enqueued UI blocks, we can perform some updates more eagerly, increasing our utilization of the main thread while splitting up the amount of time we spend running upon it.
This shouldn't affect layout, which is still tied to `-batchDidComplete`, so any visual inconsistencies should be limited to prop changes, which seems acceptable for the dramatic improvement in performance.
Reviewed By: javache
Differential Revision: D2658552
fb-gh-sync-id: 6d4560e21d7da1b02d2f30d1860d60735f11c4b5
Summary: There is no point in using `updateLayout` when we have `didSetProps`.
The only a bit risky part is calling `dirtyLayout` in `setFrame:forView:` instead of `updateLayout`,
but since setting frame shouldn't really change border/margin/padding it should be ok.
Depends on D2699512.
public
Reviewed By: nicklockwood
Differential Revision: D2700012
fb-gh-sync-id: a7c33b3b4e3ddc195bebebb8b03934131af016fb
Summary: public
The `bridge.modules` dictionary provides access to all native modules, but this API requires that every module is initialized in advance so that any module can be accessed.
This diff introduces a better API that will allow modules to be initialized lazily as they are needed, and deprecates `bridge.modules` (modules that use it will still work, but should be rewritten to use `bridge.moduleClasses` or `-[bridge moduleForName/Class:` instead.
The rules are now as follows:
* Any module that overrides `init` or `setBridge:` will be initialized on the main thread when the bridge is created
* Any module that implements `constantsToExport:` will be initialized later when the config is exported (the module itself will be initialized on a background queue, but `constantsToExport:` will still be called on the main thread.
* All other modules will be initialized lazily when a method is first called on them.
These rules may seem slightly arcane, but they have the advantage of not violating any assumptions that may have been made by existing code - any module written under the original assumption that it would be initialized synchronously on the main thread when the bridge is created should still function exactly the same, but modules that avoid overriding `init` or `setBridge:` will now be loaded lazily.
I've rewritten most of the standard modules to take advantage of this new lazy loading, with the following results:
Out of the 65 modules included in UIExplorer:
* 16 are initialized on the main thread when the bridge is created
* A further 8 are initialized when the config is exported to JS
* The remaining 41 will be initialized lazily on-demand
Reviewed By: jspahrsummers
Differential Revision: D2677695
fb-gh-sync-id: 507ae7e9fd6b563e89292c7371767c978e928f33
Summary: public
We were calling constantsToExport twice for every ViewManager, and including two copies of the values in __fbBatchedBridgeConfig. This diff removes the copy from UIManager and then puts it back on the JS side.
Reviewed By: tadeuzagallo
Differential Revision: D2665625
fb-gh-sync-id: 147ec4bfb404835e3875964476ba233d619c28aa
Summary: public
In iOS < 9, inserting a nil object into NSMutableDictionary crashes. It is valid for come components to return a nil shadowView (e.g. ART nodes), and this was crashing on iOS 8.
Reviewed By: jspahrsummers
Differential Revision: D2658309
fb-gh-sync-id: 7abf9273708cc03c3b6307b69ba11c016b471fbe
Summary: This queue processes layout and user interface updates, so it should have as high a quality-of-service/priority as possible.
public
Reviewed By: javache
Differential Revision: D2641837
fb-gh-sync-id: 934686f7969b43101af183148d67ff7be4bdf660
Summary: public
Rename it to `RCT_PROFILE_(BEGIN|END)_EVENT` to make it clearer that it's a macro,
since it has special behaviours.
Reviewed By: jspahrsummers
Differential Revision: D2631542
fb-gh-sync-id: 629c139462c4aa3582f719b14482017d13676e33
Summary: public
There were some old markers that are now automatically inject and now are no longer necessary (+ one that was missing an end call :( ))
Reviewed By: javache
Differential Revision: D2625901
fb-gh-sync-id: 4c4c9d6b4e8e2b4bdb9c64fde01000b0ca2e9f47
Summary: public
Add RCTFatal for reporting fatal runtime conditions. This centralizes failure handling to one function and allows you to customize how they should be handled. RCTFatal will be logged to the console and as a redbox and will also be triggered by fatal exceptions coming from RCTExceptionsManager.
Note that there is no RCTLogFatal, since just logging the fatal condition does not allow us to handle it consistently.
Reviewed By: nicklockwood
Differential Revision: D2615490
fb-gh-sync-id: 7d8e134419e10a8fb549297054ad955db3f6bee0
Summary: public
Added lightweight genarics annotations to make the code more readable and help the compiler catch bugs.
Fixed some type bugs and improved bridge validation in a few places.
Reviewed By: javache
Differential Revision: D2600189
fb-gh-sync-id: f81e22f2cdc107bf8d0b15deec6d5b83aacc5b56
Summary: public
The UIManager had a lock around the enqueued ui blocks, but now all the operations
should happen on the shadow thread, so I added assertions to it and removed the
locks.
Reviewed By: nicklockwood
Differential Revision: D2605760
fb-gh-sync-id: e1bc649f759502e7e9fd059932e0cba38dba05bf
Summary: There is no point in dispatching to main thread if there is nothing to do there.
This place gets called basically any time a repeating js timer fires, which doesn't imply UI changes (although usually that's why people setup timers).
Combined with previous diffs that makes us not generate empty blocks (nil instead), this could be minor perf win in some rare cases.
This also changes semantic of `reactBridgeDidFinishTransaction` call a bit. Previously it was done no matter if UI has changed or not.
I think it should be safe, since seems like callees really care only about views being laid out.
Depends on D2571166. (not strictly speaking)
public
Reviewed By: jspahrsummers, nicklockwood
Differential Revision: D2571188
fb-gh-sync-id: 02d52e4615475072c3c27226e67c431a667ec990
Summary: Same as in previous diffs. Gets us into a better place to know if we really have UI updates and it's marginally more efficient.
Depends on D2571143. (not really)
public
Reviewed By: nicklockwood
Differential Revision: D2571166
fb-gh-sync-id: e8f34521ec2e12156a49f1cd655e92df1db34fca
Summary: Previously `_bridgeTransactionListeners` were informed about `reactBridgeDidFinishTransaction` inside of one of the UI blocks.
That seems pretty arbitrary, doesn't really mean a "transaction" is really over (assuming transaction means all UI updates) and even when that block does nothing we still need to call these listeners, since there could be other UI blocks generated somewhere else!
So I've moved this call to a place that seemed better (=after all UI blocks are done), since all listeners are interested in knowing when layout has happened.
public
Reviewed By: nicklockwood
Differential Revision: D2571122
fb-gh-sync-id: 62be03ebc4353d6f6318c9765079b87b07483be2
Summary: When you reload and create a new bridge, one of the things that happens during setup is that the RCTAccessibilityManager fires a notification. The old bridge would receive this notification from the new bridge's RCTAccessibilityManager, which we don't want, especially because the two are running on different shadow queues.
I believe this led to a gnarly crash in NSConcreteTextStorage because RCTMeasure in RCTShadowText.m was getting called for the old RCTText (getting destroyed) from a notification fired from the new shadow queue. The fix is for the UIManager to handle notifications only from its bridge's RCTAccessibilityManager. See #2001 for the kinds of crashes we were seeing.
Closes https://github.com/facebook/react-native/pull/3279
Reviewed By: @svcscm
Differential Revision: D2521652
Pulled By: @nicklockwood
fb-gh-sync-id: a4ffe3ef8304667727e573e2a2e8b716e1d2f3e1
Summary:
We currently wait until after views have been updated on the main thread before sending layout events. This means that any code that relies on those events to update the UI will lag the atual layout by at least one frame.
This changes the RCTUIManager to send the event immediately after layout has occured on the shadow thread. This noticably improves the respinsiveness of the layout example in UIExplorer, which now updates the dimension labels immediately instead of waiting until after the layout animation has completed.
Summary:
Currently, the system for mapping JS event handlers to blocks is quite clean on the JS side, but is clunky on the native side. The event property is passed as a boolean, which can then be checked by the native side, and if true, the native side is supposed to send an event via the event dispatcher.
This diff adds the facility to declare the property as a block instead. This means that the event side can simply call the block, and it will automatically send the event. Because the blocks for bubbling and direct events are named differently, we can also use this to generate the event registration data and get rid of the arrays of event names.
The name of the event is inferred from the property name, which means that the property for an event called "load" must be called `onLoad` or the mapping won't work. This can be optionally remapped to a different property name on the view itself if necessary, e.g.
RCT_REMAP_VIEW_PROPERTY(onLoad, loadEventBlock, RCTDirectEventBlock)
If you don't want to use this mechanism then for now it is still possible to declare the property as a BOOL instead and use the old mechanism (this approach is now deprecated however, and may eventually be removed altogether).
Summary:
Our events all follow a common pattern, so there's no good reason why the configuration should be so verbose. This diff eliminates that redundancy, and gives us the freedom to simplify the underlying mechanism in future without further churning the call sites.
Summary:
Moved the view creation & property binding logic out of RCTUIManager into a separate RCTComponentData class - this follows the pattern used with the bridge.
I've also updated the property binding to use pre-allocated blocks for setting the values, which is more efficient than the previous system that re-contructed the selectors each time it was called. This should improve view update performance significantly.
Summary:
Dynamic Text Sizes for Text component.
Text gains new prop - allowFontScaling (false by default).
There is also AccessibilityManager module that allows you to tune multipliers per each content size category.
Summary:
The bridge implementation on React Android does not currently support boxed numeric/boolean types (the equivalent of NSNumber arguments on iOS), nor does Java support Objective-C's nil messaging system that transparently casts nil to zero, false, etc for primitive types.
To avoid platform incompatibilities, we now treat all primitive arguments as non-nullable rather than silently converting NSNull -> nil -> 0/false.
We also now enforce that NSNumber * objects must be explicitly marked as `nonnull` (this restriction may be lifted in future if/when Android supports boxed numbers).
Other object types are still assumed to be nullable unless specifically annotated with `nonnull`.
Summary:
RCTNetworkImageView and RCTStaticImage had significant overlap in functionality, but each had a different subset of features and bugs.
This diff merges most of the functionality of RCTNetworkImageView into RCTStaticImage, eliminating some bugs in the former, such as constant redrawing when properties were changed.
I've also removed the onLoadAbort event for now (as it wasn't implemented), and renamed the other events to match the web specs for `<img>` and XHMLHttpRequest. The API is essentially what Adobe proposed here: http://blogs.adobe.com/webplatform/2012/01/13/html5-image-progress-events/
The following features have not yet been ported from RCTNetworkImageView:
- Background color compositing. It's not clear that this adds much value and it increases memory consumption, etc.
- Image request cancelling when images are removed from view. Again, it's not clear if this is a huge benefit, but if it is it should be combined with other optimisations, such as unloading offscreen images.
(Note that this only affects the open source fork. For now, internal apps will still use FBNetworkImageView for remote images.)
Summary:
These are the changes needed for full interop with the (as yet unreleased) new
version of React Devtools.
- the on-device inspector is minimized when devtools is open
- devtools highlight -> device and device touch -> devtools select works
- editing react native styles :)
Summary:
Dynamic Text Sizes for Text component.
Text gains new prop - allowFontScaling (true by default).
There is also AccessibilityManager module that allows you to tune multipliers per each content size category, but predefined multipliers are there.
This could potentially break some apps so please test carefully.
Summary:
Remove layout-only views. Works by checking properties against a list of known properties that only affect layout. The `RCTShadowView` hierarchy still has a 1:1 correlation with the JS nodes.
This works by adjusting the tags and indices in `manageChildren`. For example, if JS told us to insert tag 1 at index 0 and tag 1 is layout-only with children whose tags are 2 and 3, we adjust it so we insert tags 2 and 3 at indices 0 and 1. This keeps changes out of `RCTView` and `RCTScrollView`. In order to simplify this logic, view moves are now processed as view removals followed by additions. A move from index 0 to 1 is recorded as a removal of view at indices 0 and 1 and an insertion of tags 1 and 2 at indices 0 and 1. Of course, the remaining indices have to be offset to take account for this.
The `collapsible` attribute is a bit of a hack to force `RCTScrollView` to always have one child. This was easier than rethinking out the logic there, but we could change this later.
Summary:
This adds the Keyboard animation type for when you want to animate UI based on the keyboard appearing/disappearing.
Closes https://github.com/facebook/react-native/pull/1366
Github Author: Stanislav Vishnevskiy <vishnevskiy@gmail.com>
Test Plan: Imported from GitHub, without a `Test Plan:` line.
Summary:
Remove layout-only views. Works by checking properties against a list of known properties that only affect layout. The `RCTShadowView` hierarchy still has a 1:1 correlation with the JS nodes.
This works by adjusting the tags and indices in `manageChildren`. For example, if JS told us to insert tag 1 at index 0 and tag 1 is layout-only with children whose tags are 2 and 3, we adjust it so we insert tags 2 and 3 at indices 0 and 1. This keeps changes out of `RCTView` and `RCTScrollView`. In order to simplify this logic, view moves are now processed as view removals followed by additions. A move from index 0 to 1 is recorded as a removal of view at indices 0 and 1 and an insertion of tags 1 and 2 at indices 0 and 1. Of course, the remaining indices have to be offset to take account for this.
The `collapsible` attribute is a bit of a hack to force `RCTScrollView` to always have one child. This was easier than rethinking out the logic there, but we could change this later.
@public
Test Plan: There are tests in `RCTUIManagerTests.m` that test the tag- and index-manipulation logic works. There are various scenarios including add-only, remove-only, and move. In addition, two scenario tests verify that the optimization works by checking the number of views and shadow views after various situations happen.
Summary:
@public
The info about bridge modules (such as id, name, queue, methods...) was spread
across arrays & dictionaries on the bridge, move it into a specific class.
It also removes a lot of information that was statically cached, and now have
the same lifecycle of the bridge.
Also moved RCTModuleMethod, RCTFrameUpdate and RCTBatchedBridge into it's own
files, for organization sake.
NOTE: This diff seems huge, but most of it was just moving code :)
Test Plan:
Tested UIExplorer & UIExplorer tests, Catalyst, MAdMan and Groups. Everything
looks fine.
Summary:
@public
Add marker to show JavaScript download duration + flow arrows to show the origin
of the UI blocks being flushed.
Also fixed the condition on `RCTPerfStats`, UI and JS graphs were being created
at startup time, now they're just created on the first time they're shown.
Test Plan:
The markers:
{F22577660}
To check the FPS graph, enable it on the DevMenu, and it should appear initially
empty, instead of previously filled as before.
Summary:
@public
I've increased the warning levels in the OSS frameworks, which caught a bunch of minor issues. I also fixed some new errors in Xcode 7 relating to designated initializers and TLS security.
Test Plan:
* Test the sample apps and make sure they still work.
* Run tests.
Summary:
@public
setFrame:forRootView: wasn't triggering a batch update, which is required to trigger text update. This meant text wasn't re-displayed after a rotate, only after a touch.
I also found a bug that meant we weren't caching textStorage as much as we could be. Fixed that too.
Test Plan:
* Test <Text> example in UIExplorer and ensure it lays out on rotate.
* Test <Timers> example and verify text is still updating
* Products shouldn't be affected as they have separate text implementation
Summary:
@public
Bridge modules were being invalidate on the main thread, what could lead to
racing conditions, move the calls to invalidate on happen to the module's
methodQueue
Test Plan: Run the tests
Summary:
@public
Right now the profiler shows how long the executor took on JS but doesn't show
how long each of the batched calls took, this adds a *very* high level view of JS
execution (still doesn't show properly calls dispatched with setImmediate)
Also added a global property on JS to avoid trips to Native when profiling is
disabled.
Test Plan:
Run the Profiler on any app
{F22491690}
Summary:
@public
`RCTUIManager` would traverse the whole view hierarchy every time there was any
call from JS to Native to call `reactBridgeDidFinishTransaction` on the views
that would respond to it. This is a deprecated method that is only implemented
by 3 classes, so for now we keep track of these views as they're created and
just iterate through them on updates.
Test Plan:
> NOTE: I tested this on UIExplorer, since the internally none of the classes are used
I tried to keep it simple, so I added the following to the old code:
```
__block NSUInteger count = 0;
UIView *rootView = _viewRegistry[rootViewTag];
RCTTraverseViewNodes(rootView, ^(id<RCTViewNodeProtocol> view) {
count ++;
if ([view respondsToSelector:@selector(reactBridgeDidFinishTransaction)]) {
[view reactBridgeDidFinishTransaction];
}
});
NSLog(@"Views iterated: %zd", count);
```
The output after scrolling 20 sections of the `<ListView> - Paging` example was
```
2015-06-01 00:47:07.351 UIExplorer[67675:1709506] Views iterated: 1549
```
*every frame*
After the change
```
for (id<RCTViewNodeProtocol> node in _bridgeTransactionListeners) {
[node reactBridgeDidFinishTransaction];
}
NSLog(@"Views iterated: %zd", _bridgeTransactionListeners.count);
```
```
2015-06-01 00:51:23.715 UIExplorer[70355:1716465] Views iterated: 3
```
No matter how many pages are loaded, the output is always 3.
Summary:
This adds new development feature to React Native that provides information
about selected element (see the demo in Test Plan).
This is how it works:
App's root component is rendered to a container that also has a hidden layer called
`<InspectorOverlay/>`. When activated, it shows full screen view and captures all
touches. On every touch we ask UIManager to find a view for given {x,y} coordinates.
Then, we use React's internals to find corresponding React component. `setRootInstance`
is used to remember the top level component to start search from, lmk if you have a
better idea how to do this. Given a component, we can climb up its owners tree
to provice more context on how/where the component is used.
In future we could use the `hierarchy` array to inspect and print their props/state.
Known bugs and limitations:
* InspectorOverlay sometimes receives touches with incorrect coordinates (wtf)
* Not integrated with React Chrome Devtools (maybe in followup diffs)
* Doesn't work with popovers (maybe put the element inspector into an `<Overlay/>`?)
@public
Test Plan:
https://www.facebook.com/pxlcld/mn5k
Works nicely with scrollviews
Summary:
@public
Add `RCTAssertThread` to `RCTAssert.h` for convenience when checking the current/queue,
it accepts either a `NSString *`, `NSThread *` or `dispatch_queue_t` as the object to be checked
Also add a check to `-[RCTUIManager addUIBlock:]` - There was a discussion on github (https://github.com/facebook/react-native/issues/1365)
due to the weird behavior caused by calling it from a different thread/queue (it might be added after `batchDidComplete` has been called
and will just be dispatched on the next call from JS to objc)
Test Plan:
Change `-[RCTAnimationExperimentalManager methodQueue]` to return `dispatch_get_main_queue()` and run the 2048 example,
it should dispatch with a helpful message (screenshot on the comments)
Pieter De Baets
Nick Lockwood
Eloy Durán
John Ku
Martin Kralik
Dan Witte
Justin Spahr-Summers
Tadeu Zagallo
Pawel Sienkowski
Ryan Olson
James Ide
Matt Mahoney
Vladislav Alexeev
Alex Akers
Spencer Ahrens
Kevin Gozali
Jared Forsyth
Param Aggarwal
chaceliang
Stanislav Vishnevskiy
Andrei Coman
Andy Street
Alex Kotliarskyi
Georgiy Kassabli