Branch: refs/heads/main
Home: https://github.com/WebKit/WebKit
Commit: 11889f58e15f9058cabedee0edde5d2bc1ea8cde
https://github.com/WebKit/WebKit/commit/11889f58e15f9058cabedee0edde5d2bc1ea8cde
Author: Tyler Wilcock <[email protected]>
Date: 2025-08-08 (Fri, 08 Aug 2025)
Changed paths:
M Source/WebCore/accessibility/AXTextMarker.cpp
Log Message:
-----------
AX: VoiceOver reports Safari Not Responding on pages with large chunks of
text that contain at least one non-ASCII character
https://bugs.webkit.org/show_bug.cgi?id=297103
rdar://157814661
Reviewed by Chris Fleizach.
Prior to this commit, AXTextMarker::findLastBefore(AXID) would walk every
single text position, offset-by-offset, until
it found the last object before the given AXID. Walking every single text
position is completely unnecessary — we can
just walk entire objects at a time. This performance was especially bad for
text that contained non-ASCII characters,
as that requires AXTextMarker::findMarker to create a CachedTextBreakIterator,
which is hugely expensive.
* Source/WebCore/accessibility/AXTextMarker.cpp:
(WebCore::AXTextMarker::findLastBefore const):
Canonical link: https://commits.webkit.org/298389@main
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