[Webkit-unassigned] [Bug 207364] New: transitionend event fires one event loop after the 'finish'
bugzilla-daemon at webkit.org
bugzilla-daemon at webkit.org
Thu Feb 6 15:41:51 PST 2020
https://bugs.webkit.org/show_bug.cgi?id=207364
Bug ID: 207364
Summary: transitionend event fires one event loop after the
'finish'
Product: WebKit
Version: Safari Technology Preview
Hardware: Unspecified
OS: Unspecified
Status: NEW
Severity: Normal
Priority: P2
Component: Animations
Assignee: webkit-unassigned at lists.webkit.org
Reporter: simon.fraser at apple.com
CC: dino at apple.com
transitionstart/transitionend events are dispatched via enqueueDOMEvent() which adds them to the DeclarativeAnimation's m_eventQueue, which is a MainThreadGenericEventQueue which dispatches the events via a zero-delay timer.
Conversely, DocumentTimeline::internalUpdateAnimationsAndSendEvents() explicitly dispatches the Web Animations related events (like "finish") immediately, as would be expected from https://drafts.csswg.org/web-animations/#update-animations-and-send-events
Is this difference deliberate?
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