Branch: refs/heads/main
Home: https://github.com/WebKit/WebKit
Commit: d2548129f1780abac960e3a93eaa547ba11073b6
https://github.com/WebKit/WebKit/commit/d2548129f1780abac960e3a93eaa547ba11073b6
Author: Ryosuke Niwa <[email protected]>
Date: 2024-01-09 (Tue, 09 Jan 2024)
Changed paths:
M Source/WebCore/accessibility/ios/AccessibilityObjectIOS.mm
M Source/WebCore/dom/EventListenerMap.h
M Source/WebCore/dom/EventTarget.h
M Source/WebCore/dom/Node.cpp
M Source/WebCore/dom/make-event-names.py
Log Message:
-----------
Make event handler house keeping in moveNodeToNewDocument more efficient
https://bugs.webkit.org/show_bug.cgi?id=267264
Reviewed by Chris Dumez.
Prior to this PR, the code to update the number of wheel, touch, and gesture
events in
Node::moveNodeToNewDocument were inefficient because it traversed
EventListenerMap for
each distinct wheel, touch, and gesture event type. This is O(kn) where k is
the total
number of event types, and n is the total number of event listeners on a given
Node.
This PR reimplements the same house keeping in O(n): It enumerates types of
event
listeners added on "this" event target and their count, and uses this
information to
count the total number of wheel, touch, and gesture events in a single
iteration over
EventListenerMap.
* Source/WebCore/accessibility/ios/AccessibilityObjectIOS.mm:
(WebCore::AccessibilityObject::hasTouchEventListener const):
* Source/WebCore/dom/EventListenerMap.h:
(WebCore::EventListenerMap::containsMatchingEventListener):
* Source/WebCore/dom/EventTarget.h:
(WebCore::EventTarget::enumerateEventListenerTypes):
(WebCore::EventTarget::containsMatchingEventListener):
* Source/WebCore/dom/Node.cpp:
(WebCore::Node::moveNodeToNewDocument):
* Source/WebCore/dom/make-event-names.py:
Canonical link: https://commits.webkit.org/272834@main
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