Bug 10929

Summary:	WebKit could benefit from a tool to observe/debug event dispatch
Product:	WebKit	Reporter:	Eric Seidel (no email) <eric>
Component:	Tools / Tests	Assignee:	Nobody <webkit-unassigned>
Status:	RESOLVED FIXED
Severity:	Enhancement	CC:	ap, aroben, joepeck, mrowe, timothy
Priority:	P4	Keywords:	InRadar
Version:	420+
Hardware:	Mac
OS:	OS X 10.4

Description Eric Seidel (no email) 2006-09-18 20:20:12 PDT

WebKit could benifit from a tool to observe/debug event dispatch

bdash and I just spent a while talking about JS/Web tools that we'd like to see to better support web developers using Safari/WebKit.  One idea which came out of this discussion was for a tool to track javascript event dispatch.

I have had a number of cases where I've had to debug mouse-events for my web-application in Safari and been frustrated by having to resort to gdb to do this tracking.  It would be nice if there were a way to easily see a log of all attempted dispatch, or to have information a priori as to where a mouse event might be captured/targeted.

Wiring this sort of tool into WebKit should be relatively straightforward.  A couple hooks into EventTargetNode::dispatchGenericEvent should do the trick.  The larger question (to me) is what would such a tool look like.

Comment 1 David Kilzer (:ddkilzer) 2008-02-23 20:32:01 PST

<rdar://problem/5762056>

Comment 2 Timothy Hatcher 2008-09-28 11:41:29 PDT

*** Bug 17430 has been marked as a duplicate of this bug. ***

Comment 3 Joseph Pecoraro 2010-05-10 00:48:15 PDT

The Timeline Panel helps with this, but usability on these types of use cases could probably still improve.

Comment 4 Timothy Hatcher 2012-03-17 08:57:05 PDT

Not great, but the console has support for Firebug's monitorEvents(<element>, [<event type>, ...]).

Comment 5 Timothy Hatcher 2013-10-09 15:20:35 PDT

The Timeline panel is the answer for this.