FA-38803 / Tree accessibility / Member archive

Hierarchical treegrid interaction mode: Disabled branch row enters editing mode · case 03

Disabled branch row enters editing mode produces the wrong hierarchical widget state in a regression fixture.

Member previewVariant 3 · 3 implementations · 9 checks per implementation

Case contract

Row navigation uses one logical active row. Entering cell mode chooses a visible editable cell in the row; unavailable cells are skipped. Escape returns row mode without moving row focus. Column hiding repairs cell identity, and editable descendants never become separate tree rows.

Why this case matters

Offline executable model of a hierarchical accessibility interaction; inputs are bounded and valid as stipulated. No browser, assistive technology, or normative ARIA conformance is claimed.

One recorded failure

Sample boundary fixture

This sample comes from the broken implementation of a controlled reproducer.

Boundary fixture	Actual	Expected	Outcome
disabled	`["cell", "x", "r:x", -1, {"v0": -1, "v1": -1, "v2": -1, "x": 0, "y": -1}, ["r"]]`	`["row", null, "r", 0, {"v0": -1, "v1": -1, "v2": -1, "x": -1, "y": -1}, ["r"]]`	Failed

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This record includes three runnable implementations, regression fixtures, execution results, and source hashes.

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