PlatformColor lazy fallback: honor a raw-color fallback on Android (native) (#57655) - #57655
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…cOS (native) (react#57556) Summary: An implementation for the RFC in react-native-community/discussions-and-proposals#1008 This is the first diff in a stack that adds an optional trailing `{fallback: '<raw color string>'}` argument to `PlatformColor(...)`. The fallback is carried lazily to native and parsed only when every supplied color token fails to resolve. This diff wires up the iOS and macOS native color resolvers to honor that fallback; a later diff adds the JS argument that emits it, so on its own this change is a no-op for existing call sites. The fallback is supported on the new architecture (Fabric) only. To distinguish a genuine miss (no token resolves) from a token that legitimately resolves to a transparent color, the semantic-color resolver gains an `OrNil` variant: - `RCTPlatformColorFromSemanticItemsOrNil` returns `nil` on a miss instead of collapsing to `clearColor`. `RCTPlatformColorFromSemanticItems` keeps its existing non-null contract by wrapping the `OrNil` variant. - `Color::createSemanticColor` returns the undefined-color sentinel (a null underlying `UIColor`) on a miss, so `PlatformColorParser.mm` applies the fallback only on a true miss and otherwise renders transparent exactly as before. - The fallback string is parsed with the shared CSS color parser (`parseCSSProperty<CSSColor>`), so `transparent`/`rgba(0,0,0,0)` are honored rather than mistaken for a parse failure. This spans the `xplat` iOS and macOS graphics resolvers. Changelog: [Internal] - PlatformColor: iOS/macOS native support for a lazy raw-color fallback Reviewed By: javache Differential Revision: D111837102
…ative) (react#57655) Summary: An implementation for the RFC in react-native-community/discussions-and-proposals#1008 Wires up the Android native color resolver (Fabric) to honor the lazy `{fallback}` carried by `PlatformColor(...)`. A later diff adds the JS argument that emits it, so on its own this change is a no-op for existing call sites. To tell a genuine miss apart from a token that resolves to transparent black (ARGB 0): - `FabricUIManager.getColor` now returns a boxed `Nullable Integer` — `null` means no resource path resolved. The Fabric C++ `PlatformColorParser.h` reads that boxed result over JNI, caches the explicit-miss signal, and on a miss parses the raw fallback string with the shared CSS color parser (`parseCSSProperty<CSSColor>`), matching the iOS Fabric path. The color object is now read as a `map<string, RawValue>` because it mixes an array (`resource_paths`) with an optional string (`fallback`). - `NativeDrawable` carries an optional `colorFallback` alongside `resource_paths` so ripple drawables degrade to the fallback too. Generated files (`ReactAndroid.api` and the `ReactAndroid*Cxx.api` snapshots) are regenerated to match the new public signatures. Changelog: [Internal] - PlatformColor: Android native support for a lazy raw-color fallback Reviewed By: mdvacca Differential Revision: D113329136
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…ative) (react#57655) Summary: An implementation for the RFC in react-native-community/discussions-and-proposals#1008 Wires up the Android native color resolver (Fabric) to honor the lazy `{fallback}` carried by `PlatformColor(...)`. A later diff adds the JS argument that emits it, so on its own this change is a no-op for existing call sites. To tell a genuine miss apart from a token that resolves to transparent black (ARGB 0): - `FabricUIManager.getColor` now returns a boxed `Nullable Integer` — `null` means no resource path resolved. The Fabric C++ `PlatformColorParser.h` reads that boxed result over JNI, caches the explicit-miss signal, and on a miss parses the raw fallback string with the shared CSS color parser (`parseCSSProperty<CSSColor>`), matching the iOS Fabric path. The color object is now read as a `map<string, RawValue>` because it mixes an array (`resource_paths`) with an optional string (`fallback`). - `NativeDrawable` carries an optional `colorFallback` alongside `resource_paths` so ripple drawables degrade to the fallback too. Generated files (`ReactAndroid.api` and the `ReactAndroid*Cxx.api` snapshots) are regenerated to match the new public signatures. Changelog: [Internal] - PlatformColor: Android native support for a lazy raw-color fallback Reviewed By: mdvacca, javache Differential Revision: D113329136
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…ative) (react#57655) Summary: An implementation for the RFC in react-native-community/discussions-and-proposals#1008 Wires up the Android native color resolver (Fabric) to honor the lazy `{fallback}` carried by `PlatformColor(...)`. A later diff adds the JS argument that emits it, so on its own this change is a no-op for existing call sites. To tell a genuine miss apart from a token that resolves to transparent black (ARGB 0): - `FabricUIManager.getColor` now returns a boxed `Nullable Integer` — `null` means no resource path resolved. The Fabric C++ `PlatformColorParser.h` reads that boxed result over JNI, caches the explicit-miss signal, and on a miss parses the raw fallback string with the shared CSS color parser (`parseCSSProperty<CSSColor>`), matching the iOS Fabric path. The color object is now read as a `map<string, RawValue>` because it mixes an array (`resource_paths`) with an optional string (`fallback`). - `NativeDrawable` carries an optional `colorFallback` alongside `resource_paths` so ripple drawables degrade to the fallback too. Generated files (`ReactAndroid.api` and the `ReactAndroid*Cxx.api` snapshots) are regenerated to match the new public signatures. Changelog: [Internal] - PlatformColor: Android native support for a lazy raw-color fallback Reviewed By: mdvacca, javache Differential Revision: D113329136
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…ative) (react#57655) Summary: An implementation for the RFC in react-native-community/discussions-and-proposals#1008 Wires up the Android native color resolver (Fabric) to honor the lazy `{fallback}` carried by `PlatformColor(...)`. A later diff adds the JS argument that emits it, so on its own this change is a no-op for existing call sites. To tell a genuine miss apart from a token that resolves to transparent black (ARGB 0): - `FabricUIManager.getColor` now returns a boxed `Nullable Integer` — `null` means no resource path resolved. The Fabric C++ `PlatformColorParser.h` reads that boxed result over JNI, caches the explicit-miss signal, and on a miss parses the raw fallback string with the shared CSS color parser (`parseCSSProperty<CSSColor>`), matching the iOS Fabric path. The color object is now read as a `map<string, RawValue>` because it mixes an array (`resource_paths`) with an optional string (`fallback`). - `NativeDrawable` carries an optional `colorFallback` alongside `resource_paths` so ripple drawables degrade to the fallback too. Generated files (`ReactAndroid.api` and the `ReactAndroid*Cxx.api` snapshots) are regenerated to match the new public signatures. Changelog: [Internal] - PlatformColor: Android native support for a lazy raw-color fallback Reviewed By: mdvacca, javache Differential Revision: D113329136
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Summary:
An implementation for the RFC in react-native-community/discussions-and-proposals#1008
Wires up the Android native color resolver (Fabric) to honor the lazy
{fallback}carried byPlatformColor(...). A later diff adds the JS argument that emits it, so on its own this change is a no-op for existing call sites.To tell a genuine miss apart from a token that resolves to transparent black (ARGB 0):
FabricUIManager.getColornow returns a boxedNullable Integer—nullmeans no resource path resolved. The Fabric C++PlatformColorParser.hreads that boxed result over JNI, caches the explicit-miss signal, and on a miss parses the raw fallback string with the shared CSS color parser (parseCSSProperty<CSSColor>), matching the iOS Fabric path. The color object is now read as amap<string, RawValue>because it mixes an array (resource_paths) with an optional string (fallback).NativeDrawablecarries an optionalcolorFallbackalongsideresource_pathsso ripple drawables degrade to the fallback too.Generated files (
ReactAndroid.apiand theReactAndroid*Cxx.apisnapshots) are regenerated to match the new public signatures.Changelog:
[Internal] - PlatformColor: Android native support for a lazy raw-color fallback
Reviewed By: mdvacca
Differential Revision: D113329136