Event propagation quirky with changed EventTarget nodes




16 years ago
13 years ago


(Reporter: WeirdAl, Unassigned)



Windows 98

Firefox Tracking Flags

(Not tracked)



(3 attachments)



16 years ago
I've noticed a rather interesting behavior in Mozilla, one which the DOM 2
Events Recommendation and the DOM 3 Events Last Call Working Draft from W3C do
not cover.

Basically, when I replace the actual event target (or likely any ancestor node
of the actual target) with another node, the DOM specs are not clear on correct

I'm attaching two testcases, an XUL testcase and an XHTML testcase.  The XUL
testcase is more descriptive, but the XHTML testcase will render in non-Gecko
based browsers as well.

I believe there is at least one bug in the behaviors of the browser here; I'm
just not sure what exactly is "wrong" and what is "correct".

Comment 1

16 years ago
Posted file XUL testcase

Comment 2

16 years ago
Posted file XHTML testcase


16 years ago
Keywords: testcase

Comment 3

16 years ago
jst:  thought you'd like to see this, as a member of the DOM WG.

Comment 4

16 years ago
Running the XUL testcase, the third step, it shows the event propagating through
foo_menu, not bar_menu.  This is clearly a bug.
Alex, could you send a request to the DOM WG (www-dom@w3.org) to clarify the
intended behavior in the DOM Events specification?

Comment 7

16 years ago

The DOM WG's response.

I think Mr. Hegaret is telling us that for the XUL testcase's second part, the
Event object should still go to the target node.
This is how KHTML handles event propagation:
But is that a bit slow way to do it, creating a node chain for each event...
Assignee: saari → events
QA Contact: vladimire → ian
Any comments on this one?
The idea is to create an event target chain in stack before starting to handle
the event.
This would be quite big change to event handling, but I think something like
this is needed. And hopefully it wouldn't slow down the event handling.
Yes, something like this is absolutely needed; there is no other way to
implement the spec.  Yes, this would be a major change to event handling (and
need changes to all the HandleDOMEvent mathods, if nothing else).  See bug
234455.  Any such code should go there, probably.
Depends on: 234455
fixed in bug 234455
Last Resolved: 13 years ago
Resolution: --- → FIXED
You need to log in before you can comment on or make changes to this bug.