Branch: refs/heads/main
Home: https://github.com/WebKit/WebKit
Commit: f0e7421cd9a94d12034b9fd496953f2bab292463
https://github.com/WebKit/WebKit/commit/f0e7421cd9a94d12034b9fd496953f2bab292463
Author: Tyler Wilcock <[email protected]>
Date: 2024-12-12 (Thu, 12 Dec 2024)
Changed paths:
M Source/WebCore/accessibility/isolatedtree/AXIsolatedObject.cpp
Log Message:
-----------
AX: AXIsolatedObject::remoteFrameOffset() does an unnecessary ancestry
traversal
https://bugs.webkit.org/show_bug.cgi?id=284589
rdar://141402485
Reviewed by Chris Fleizach.
With this commit, we now cache AXPropertyName::RemoteFrameOffset in the
AXIsolatedTree root node rather than in any object
that is AccessibilityRole::WebArea. This means that
AXIsolatedObject::remoteFrameOffset() no longer has to do an ancestry
traversal to find a webarea, and instead can just access it from
tree()->rootNode(), turning an O(n) operation into an
O(1) one.
This is especially important because remoteFrameOffset() is called from
relativeFrame(), a frequently requested property
by ATs, and also is a function that can be called in a loop as part of
AXIsolatedObject::relativeFrameFromChildren().
* Source/WebCore/accessibility/isolatedtree/AXIsolatedObject.cpp:
(WebCore::AXIsolatedObject::initializeProperties):
(WebCore::AXIsolatedObject::remoteFrameOffset const):
Canonical link: https://commits.webkit.org/287783@main
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