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Send null when removing TextInput color props with props diffing - #59824

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coado wants to merge 3 commits into
react:mainfrom
coado:textinput-diffing-03-color-removal
Open

coado wants to merge 3 commits into
react:mainfrom
coado:textinput-diffing-03-color-removal

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@coado

@coado coado commented Nov 6, 2026 •

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Summary:

When the props reconciliation is turned on removing text input color props sent 0 which is treated as transparent for ReactTextInputManager. These props now send null when removed.

Changelog:

[Internal] - Send null when removing TextInput color props with props diffing

Test Plan:

Added AndroidTextInputPropsDiffTest.removedColorsAreSentAsNull test.

coado and others added 3 commits November 5, 2026 20:10
Summary:
`ReactTextInputManager` only sets up the watchers behind `onKeyPress`, `onSelectionChange`, `onContentSizeChange` and `onScroll` once it receives the matching prop. `AndroidTextInputProps` had no fields for these props, so `getDiffProps` never sent them and the events never fired with props diffing on. `TextInput.js` always passes `onScroll` and `onSelectionChange`, so every TextInput would be affected.

This adds the fields and sends them. JS sends a handler as `true`. Removing a handler sends `false`, which the setters treat the same as the `null` sent by raw props.

TextInput doesn't use props diffing yet: `getDiffPropsImplementationTarget()` returns `TextInput`, which doesn't match the `AndroidTextInput` component name. So the problem above only appears once that is enabled, and this change has no runtime effect until then.

Changelog:
[Internal] - Send TextInput event props when props diffing is enabled

Test Plan:
`AndroidTextInputPropsDiffTest.eventHandlerPropsAreSent` compares the props diffing payload with the raw props payload. It fails without this change and passes with it. `python -m scripts.cxx-api.parser --validate` passes at this commit.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Summary:
`AndroidTextInputProps::getDiffProps` never sent `color`. The flat `color` field is not parsed, so the value is only available in `textAttributes.foregroundColor`. Existing text is colored by the attributed string in the state, but the native view kept its default text color, so text typed into an empty input ignored `color`. With a light `color` on a dark background the typed text was black.

This sends `color` from the text attributes, and `null` when it is removed so that `ReactTextInputManager` restores the default text color.

TextInput doesn't use props diffing yet: `getDiffPropsImplementationTarget()` returns `TextInput`, which doesn't match the `AndroidTextInput` component name. So the problem above only appears once that is enabled, and this change has no runtime effect until then.

Changelog:
[Internal] - Send TextInput color when props diffing is enabled

Test Plan:
`AndroidTextInputPropsDiffTest.colorIsSent` compares the props diffing payload with the raw props payload. It fails without this change and passes with it.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Summary:
Removing `placeholderTextColor`, `selectionColor`, `selectionHandleColor`, `cursorColor` or `underlineColorAndroid` sent the value of the unset `SharedColor`, which is 0. `ReactTextInputManager` treats 0 as transparent and only restores the platform default for `null`, so the placeholder, the selection highlight, the handles or the cursor became invisible.

These props now send `null` when removed, the same as raw props. An explicit `transparent` is still sent as 0. `textShadowColor` used the same pattern and is changed with them, although `ReactTextInputManager` has no setter for it.

TextInput doesn't use props diffing yet: `getDiffPropsImplementationTarget()` returns `TextInput`, which doesn't match the `AndroidTextInput` component name. So the problem above only appears once that is enabled, and this change has no runtime effect until then.

Changelog:
[Internal] - Send null when removing TextInput color props with props diffing

Test Plan:
`AndroidTextInputPropsDiffTest.removedColorsAreSentAsNull` compares the props diffing payload with the raw props payload. It fails without this change and passes with it.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
@meta-cla meta-cla Bot added the CLA Signed This label is managed by the Facebook bot. Authors need to sign the CLA before a PR can be reviewed. label Nov 6, 2026
@facebook-github-tools facebook-github-tools Bot added p: Software Mansion Partner: Software Mansion Partner p: Facebook Partner: Facebook labels Nov 6, 2026

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