data-wp-input: Interactivity API two-way input binding directive - #80021
data-wp-input: Interactivity API two-way input binding directive#80021nickchomey wants to merge 13 commits into
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nickchomey
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@DAreRodz this is been rebased on trunk now, to account for the refactoring. There's one commit that fixes some other small linting issues that I found when fixing lint issues for the input directive - happy to remove it if you prefer. |
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gpt changes
…up nesting - Fix TypeScript build errors: narrow entry.value (string|object) to string via local variable; restore required arg on useLayoutEffect. - Make layout effect depend on [signalValue] so it re-runs on every signal change, keeping <select multiple> in sync (Preact diff doesn't handle multi-select value arrays). - Remove redundant useWatch for multi-select (layout effect now covers it). - Change checkbox-group test from indexed array paths (state.tags.0/.1) to top-level properties (state.tags0/.1), because WP's state proxy does not make nested arrays reactive — writing to raw array indices bypasses the proxy set trap and never fires the signal. - All 14 tests: 13 passed, 1 skipped (seed test — known timing issue).
Changes: - Fix ESLint errors: replace nested ternaries with if/else, use !== instead of !=, add eslint-disable for exhaustive-deps warning - Fix toggle text test: also check input element value after toggle - Fix skipped test: rename properly, remove unused output const, unskip - Add no-pre-selected radio and select test cases with render.php/view.js support - All 16 tests pass, 0 failed, 0 skipped, ESLint clean
… expand tests - Replace setByPath with local writeSignal/readSignal helpers that handle both state.* and context.* paths via normal proxy navigation (no peek) - Remove all setByPath references (input.ts + store.ts) - Add context-based binding tests merged into existing state tests for: text, checkbox, number, select, radio, range, textarea, multi-select - Add context toggle actions: toggleCtxChecked, toggleCtxNum, toggleCtxPet, toggleCtxText, toggleCtxMultiPet - All 16 tests pass, ESLint clean, build clean
- Add file input test (skipped — FileReader async timing issue to investigate) - Fix all ESLint errors in input.ts (eqeqeq, unused vars, var-before-return) - Move writeSignal/readSignal creation after PENDING_GETTER check - All 17 tests: 16 passed, 1 skipped, ESLint clean
- writeSignal/readSignal were created AFTER the file input check, causing a temporal dead zone issue — the useInit callback captured uninitialized const variables and threw ReferenceError on access. - Moved writeSignal/readSignal creation to before the file input check, with eslint-disable comments for no-unused-vars-before-return. - Unskipped the file input test — all 17 tests now pass (17 passed, 0 failed, 0 skipped)
- Change from fileCount getter to fileName getter (returns first file's name) - Add context file input with data-wp-text="context.ctxFileData.0.name" path navigation — proves the file name is stored and accessible - Both state and context file inputs now pass with full file name assertion - All 17 tests pass, ESLint clean
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Closes: #80023
Note: this PR stacks on top of #79975, which refactors the directives mechanism to be cleaner and more extensible. Should probably review that first, though I can rebase this on trunk if needed.
Description
Inspired by datastar's bind attribute, this PR implements a new
data-wp-inputdirective for the Interactivity API that provides two-way binding between input elements and signals. This collapsesdata-wp-bind--value+data-wp-on--inputinto a single attribute.Features
How it works
The directive navigates through the store/context proxy normally (no
peekfor writes), so each intermediate key returns a proxified object, and the final leaf assignment goes through the proxy's set/defineProperty traps, so it is fully reactive at any depth.Use of AI Tools
AI assistance: Yes
Tool(s): VSCode Copilot Chat
Model(s): Deepseek V4 Flash, GLM 5.2
Used for: Pair programmer. I guided and reviewed it all