Martín Lucas Golini 1dd0870187 Harden accessibility review fixes and make macOS de-dup linear ...

macOS:
- Check each notification against a hash set of (event, element,
  related element) instead of scanning the whole pending queue. The
  ordered queue still drives delivery, so a burst of distinct events
  (e.g. 10,000 label changes) stays linear. Created/Destroyed are never
  de-duplicated.
- Track the pending focus change by its index instead of scanning for it.

Core:
- SceneManager::update: also bound the loop by the live scene count, so
  a scene removed during the pass can't cause an out-of-range read.
- Accessibility setters (role, label, description, hidden) return early
  on unchanged values. Re-applying CSS no longer allocates the
  properties block or notifies clients.

API cleanup:
- Remove AccessibilityRelation, AccessibilityRelationInfo and
  AccessibilityNodeInfo::relations. Nothing populated them. Remove the
  inspector row and the macOS linked-elements attribute that read them.
  AT-SPI GetRelationSet still answers with an empty set.
- Drop unused includes in uiroot.cpp and accessibility.hpp.

Docs:
- Architecture guide: UIA and macOS queue events until update(); AT-SPI
  emits right away except for per-frame text diffs. Describe each
  backend's per-frame batching, including the macOS de-dup.

Tests:
- Add UnchangedAccessibilityPropertiesStaySilent.

2026-10-09 10:47:43 -03:00

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eepp

Harden accessibility review fixes and make macOS de-dup linear

2026-10-09 10:47:43 -03:00