Summary:
Changelog: [Internal]
# Problem
Yoga internally uses address of owner to determine whether a node should be cloned or it shouldn't.
During layout, it traverses the tree and looks whether current parent is equal to child's owner. If it isn't it means the yoga node is shared between 2+ trees and need to be cloned before mutated. Parent in yoga is stored as reference to the parent.
We can run into an issue where yoga node is shared between 2+ trees, but its current parent is equal to child's owner. This is because we reallocate new parent at address where its previous parent lived. This happens over few iterations, the old parent is first deallocated.
This is known as ABA problem.
# Solution
When we are cloning node, we loop over all children to see whether any of the is not using address of new `yogaNode_` as its owner. At this point we know this is accidental and set its owner to `0xBADC0FFEE0DDF00D`.
We chose `0xBADC0FFEE0DDF00D` because when someone is debugging this in LLDB and prints this address, it will hint them that it was artificially set and can string search for it in the codebase.
Reviewed By: shergin
Differential Revision: D21641096
fbshipit-source-id: c8b1b4487ea02b367f5831c1cdac055bce79c856
Summary:
1. Split out the prop interpolation function out of the View ComponentDescriptor, into an inline'd function that can be used elsewhere.
2. Call it from View and from Paragraph component descriptors.
This causes animations including Text to look normal on iOS.
Changelog: [Internal]
Reviewed By: mdvacca
Differential Revision: D21675804
fbshipit-source-id: c34a317749fd6c108aef072d47f3dcb14ce8aa5c
Summary:
1. Split out the prop interpolation function out of the View ComponentDescriptor, into an inline'd function that can be used elsewhere.
2. Call it from View and from Paragraph component descriptors.
This causes animations including Text to look normal on iOS.
Changelog: [Internal]
Reviewed By: shergin
Differential Revision: D21635473
fbshipit-source-id: 470f43fd24a6e80d8696ee2f2a09d9e693b7f280
Summary:
For Fabric LayoutAnimations, we need to support interpolating the Transform property (which really ends up just being interpolation of ScaleX, ScaleY, or ScaleXY transforms - not arbitrary matrices).
To support that, we need to be able to convert Transform back to folly::dynamic, and on the Java side we need to support accepting arbitrary matrices instead of transform maps of properties.
Changelog: [Internal] Fabric-only changes
Reviewed By: sammy-SC
Differential Revision: D21564590
fbshipit-source-id: b137f659b27e4b8fae83921a28ccf46035e18651
Summary:
Changelog: [Internal]
Using `empty()` vs `size() == 0` or `size() > 0`.
It is a more semantic way to check whether container is empty or not.
Reviewed By: JoshuaGross
Differential Revision: D21573183
fbshipit-source-id: b83283f687432a037941852114717a0f014e28db
Summary:
Each ComponentDescriptor becomes capable of doing its own interpolation over props for animation purposes.
This new custom interpolator is called by default by the ConcreteComponentDescriptor, but `ComponentDescriptor::interpolateProps` is a virtual function and each ComponentDescriptor can provide custom interpolation if necessary.
For now, only View does any actual interpolation, to support LayoutAnimations.
Changelog: [Internal]
Reviewed By: mdvacca
Differential Revision: D20965310
fbshipit-source-id: e1c1588107848e94c155efecb0da1cc1619ae544
Summary:
The name of the value was incorrect.
Changelog: [Internal] Fabric-specific internal change.
Reviewed By: mdvacca
Differential Revision: D21496651
fbshipit-source-id: 464c98436bb8d5f2b6275b7eab1c32d187e2b23c
Summary:
Move and create an empty rule that redirects as well, to handle //arvr rules
Need to do this way, since ovrsource sync rules are in different repo.
allow_many_files
allow-large-files
Steps:
- [X] Move glog from xplat/third-party to /third-party
- [ ] Update references in ovrsource to translate to //third-party instead of //xplat/third-party
- [ ] Get rid of temporary rule
- [ ] Update fbsource/third-party/glog to 0.3.5 (what we have in ovrsource)
Changelog: [Internal] Update reference for glog from xplat/third-party to /third-party.
Reviewed By: yfeldblum
Differential Revision: D21363584
fbshipit-source-id: c1ffe2dd615077170b03d98dcfb77121537793c9
Summary:
The integration with Yoga was pretty complex from day one. The first attempt to make it simpler was in D19963353 when we removed a bunch of layers of indirection. This is the second iteration that aimed to simplify the structure of methods and their responsibilities.
The only conceptual change (that I am aware of) in this diff is that now we don't support (imaginary) case where a non-leaf YogaLayoutableShadowNode can have a non-YogaLayoutableShadowNode child. In the previous version, it was a no-op, now it's not supported and an assert will fire.
Alongside with refactoring, this diff implements several helper functions that verify the invariants important for the Concurrent Layout in debug mode.
Changelog: [Internal] Fabric-specific internal change.
Reviewed By: JoshuaGross
Differential Revision: D21198222
fbshipit-source-id: cc085904948056f861562af5bd2571de45a743b9
Summary:
Yoga uses a dirty flag to re-layout nodes. In normal, single-threaded approach the policy for dirtying is simple: if a node was changed, we need to dirty it. In the Concurrent Yoga approach, those rules are not so simple, and it seems we haven't formalized those rules yet.
Investigating some layout issues that we have in Fabric, I tend to believe that we don't dirty as much we should. Hense this change adds mode dirtying.
Reviewed By: JoshuaGross
Differential Revision: D21092815
fbshipit-source-id: 4603c97ccb79efcdf5e6a4cc450ebe61b63effb3
Summary:
This is quite a fateful mistake. `getDirtied()` returns the pointer to a function which is obviously a mistake here; we should use `isDirty()` instead.
Changelog: [Internal] Fabric-specific internal change.
Reviewed By: mdvacca
Differential Revision: D21028569
fbshipit-source-id: 95212b31f4e32d51c594d5209f295397af3f1252
Summary:
Changelog: [Internal]
We were assigned `undefined` value to incorrect edge, instead of `YGEdgeLeft` it should have been `YGEdgeRight`.
If node has `YGEdgeRight` value, it needs to be reassigned to `YGEdgeEnd` and its original value set to undefined.
Reviewed By: mdvacca
Differential Revision: D21095234
fbshipit-source-id: fbecd9b7e6670742ad4a4bb097760aa10eec8685
Summary:
We need to break up the `uimanager` module in order to solve circular dependencies problem (which future diff would have otherwise).
Changelog: [Internal] Fabric-specific internal change.
Reviewed By: JoshuaGross
Differential Revision: D20885163
fbshipit-source-id: 08eb1ba1d408fc0948e8d0da62380786a40973af
Summary:
* <Image> must be a leaf node; having a proper trait will fail earlier in case of misuse (mounting something inside).
* <View> must have a `View` trait because it's for what that trait is.
Changelog: [Internal] Fabric-specific internal change.
Reviewed By: sammy-SC
Differential Revision: D21028573
fbshipit-source-id: 457716d4661333eb2357f34316f3e495ab4fda24
Summary:
Changelog: [Internal]
View with `ShadowColor` was getting flattened and therefore views didn't have shadow property set.
This is fixed by promoting ShadowColor so in case it is set, it forms stacking context.
Reviewed By: shergin
Differential Revision: D20792201
fbshipit-source-id: 1033ac00e32047ffbb14e61b7c26348c578d132d
Summary:
Changelog: [Internal]
`orderIndex_` was only being assigned for `ViewShadowNode`, not for other `ShadowNodes` that are later represented on the screen.
Reviewed By: shergin
Differential Revision: D20746477
fbshipit-source-id: c04c2cfea14b9141d22bc3d9e9bb4c0c59925754
Summary:
`fbsource//xplat` and `//xplat` are equivalent for FB BUCK targets. Removing extra prefix for consistency.
Changelog: [Internal]
Reviewed By: scottrice
Differential Revision: D20495655
fbshipit-source-id: a57b72f694c533e2e16dffe74eccb8fdec1f55f5
Summary:
Now, having `orderIndex` feature in the core, we can use it for implementing `zIndex` feature. All we need to do is just to assign this `zIndex` value to `orderIndex`.
Then we will use this to remove some platform-specific code that implements `zIndex` on the mounting layer.
Changelog: [Internal] Fabric-specific internal change.
Reviewed By: sammy-SC
Differential Revision: D20432155
fbshipit-source-id: b4d62b63006f45899de38e1f40b1dfbe69550ada
Summary:
This behavior matches the behavior of `dynamic_cast` (on which some callsites rely on).
Changelog: [Internal] Fabric-specific internal change.
Reviewed By: sammy-SC
Differential Revision: D20456792
fbshipit-source-id: 9604da0f9f78cc7357e60ed11012756e753e4b45
Summary:
This method does not have implementation and we don't use it.
Changelog: [Internal] Fabric-specific internal change.
Reviewed By: sammy-SC
Differential Revision: D20423392
fbshipit-source-id: cfb5e4a60dbeca26a968c29d20e74dd6af0bf660
Summary:
The new name is get_preprocessor_flags_for_build_mode.
Changelog: [Internal]
Reviewed By: d16r
Differential Revision: D20351718
fbshipit-source-id: 67628ce81e7244f0f72af2d00d92842a649ff619
Summary:
This diff changes how we apply layout constraints to a root node before layout. We previously used two arguments of `YGNodeCalculateLayout` but that's not expressive enough in cases we have min & max sizes.
Changelog: [Internal] Fabric-specific internal change.
Reviewed By: JoshuaGross, sammy-SC
Differential Revision: D20268051
fbshipit-source-id: 85aaae65326432993296c3cbc9f7fb8919b07386
Summary:
These `assert`s must be satisfied. Having them allows us to fail early in case of bugs.
I spent a log of time debugging an issue and finally found that after adding those `assert`s.
Changelog: [Internal] Fabric-specific internal change.
Reviewed By: mdvacca
Differential Revision: D20268046
fbshipit-source-id: 1d8ddd6de00069bd2a79e74af5e4278aa6c9131b
Summary:
It's not clear why exactly but seems in some cases, for some views the hierarchical relationship between views is required (when it should not be conceptually). Turning this feature off for Android for now.
Changelog: [Internal] Fabric-specific internal change.
Reviewed By: JoshuaGross
Differential Revision: D20292833
fbshipit-source-id: 1aab8468cedeb5c1440a95944be7eca3216e0db0
Summary: Now, following the previous diff, we remove `LayoutableShadowNode::isLayoutOnly()` and change the view flattening algorithm to rely on two new traits. See the previous diff to learn more about how it works.
Reviewed By: sammy-SC
Differential Revision: D20212252
fbshipit-source-id: 87a07e8bb17b2e66e5703f107dc35ca7a8e49634
Summary:
This diff introduces two new `ShadowNodeTrait`s that we will use in the future in the new (slightly tweaked) view-flattening algorithm. (Note: this diff does not enable the new flattening, it's just preparation.)
The idea is that we split the notion of `isLayoutOnlyView` into two traits:
* `FormsView`: `ShadowNode`s with this trait must be represented as `ShadowView`s. Normal "visible" ShadowNodes will have this trait, but "layout only views" in old nomenclature will not.
* `FormsStackingContext`: `ShadowNode`s with this thread not only must be represented as `ShadowView`s but also have to form a "stacking context" which means that their children must be mounted as `ShadowView`'s children.
Our implementation does not exactly follow W3C spec in terms of sets of props that create the stacking context (because of historical reasons and mobile specifics) but ideologically it's the same. We start from the very conservative implementation where only views with background-color and borders do not form stacking context and then we probably extend that to more props.
Most importantly for us now, we will enforce the absence of ``FormsStackingContext` for `ParagraphShadowNode` and the presence of `FormsView` for `TextShadowNode` on Android where it's essential for mounting layer.
Read more about stacking context here: https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_Positioning/Understanding_z_index/The_stacking_context
Changelog: [Internal] Fabric-specific internal change.
Reviewed By: sammy-SC
Differential Revision: D20212253
fbshipit-source-id: 0fbaee214ce2c5886cb0232843a2a3c7bb20655d
Summary:
Passing `layoutContext` to yoga crashes fb4a-64. Until I have a solution let's back this out.
Original commit changeset: 9df7da4bef8c
Changelog: [Internal]
Reviewed By: makovkastar
Differential Revision: D20246917
fbshipit-source-id: 220744fde9f74e8157fc0714c63639b01152e4ab
Summary:
This is a part of migration staterted in D19390813.
There is no need to have those as const. The whole *Props object is usually const (and when it's not, props should not be too).
Changelog: [Internal] Fabric-specific internal change.
Reviewed By: sammy-SC
Differential Revision: D20212255
fbshipit-source-id: 87f3d8e7a94c6626bd9b0fc304f75e915dd73d4c
Summary:
In order to build dynamic text sizing, `LayoutableShadowNode::measure` needs to accept `LayoutContext`
Changelog: [Internal]
Reviewed By: shergin
Differential Revision: D20184598
fbshipit-source-id: 8928b59d51948caf3654f40049212a89a91dceb6
Summary:
In order to build dynamic text sizing, we need to pass layoutContext to `yogaNodeMeasureCallbackConnector`
Changelog: [Internal]
Reviewed By: shergin
Differential Revision: D20184597
fbshipit-source-id: 9df7da4bef8cbad3bc87d63ed0c5aa5f420dbc11
Summary:
Changelog: [internal]
# Problem
We have node A with N children.
Calling cloning constructor on `YogaLayoutableShadowNode` causes new `yogaNode_` to be created.
However if `fragment.children` is nil in cloning constructor, which basically says children were not changed, then the existing children's `owner` becomes invalid.
# Solution
In the clone constructor, always call `updateYogaChildren`. This updates yoga children with the new `owner`.
Reviewed By: JoshuaGross
Differential Revision: D20139582
fbshipit-source-id: 3932694d4381b601df07dd8a57887ce7c09f1582
Summary:
Cloning subtrees is not something specific to a RootNode, so it makes sense to have it in ShadowNode. Soon we will use that to clone subtrees inside Paragraph component to implement Inline Views.
Changelog: [Internal] Fabric-specific internal change.
Reviewed By: mdvacca
Differential Revision: D20090666
fbshipit-source-id: 0a64ef9bda438cd55d5fd21d3ad83b36221fa89e
Summary:
All logic that is performed on the root node only was moved from `layout` to a separate methods `layoutTree`. That makes the code simpler and allows reusing `layoutTree` in InlineViews feature.
Changelog: [Internal] Fabric-specific internal change.
Reviewed By: mdvacca
Differential Revision: D20052025
fbshipit-source-id: 3070a1cca4e322c6d077ede751ea80359c96a600
Summary:
Similar to a previous diff but for `setChildren`.
`YogaLayoutableShadowNode::setChildren()` was renamed to `YogaLayoutableShadowNode::updateYogaChildren()`. Now we don't need to pass an argument to this function because the object is already initialized. The new name also disambiguates this method with `getChildren()` from `ShadowNode` (which does something completely different). The rest of the changes is just type adjustments.
Changelog: [Internal] Fabric-specific internal change.
Reviewed By: mdvacca
Differential Revision: D20052031
fbshipit-source-id: 6157cad9b55d4cdd97ce04e1278ac1369bfb96bc
Samuel Susla
Joshua Gross
Ishan Khot
David Vacca
Kevin Gozali
Valentin Shergin
Nikita Lutsenko
Adam Ernst
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