148417 - XUL trees misbehaving

Status: RESOLVED WORKSFORME

(Core :: XUL, defect)

Description

[arman]

There appears to be a general problem with the way event bubbling is happening
with trees.  As the attached example shows, when stacking something on a tree,
the tree's children continue to show up and consume events.  However, the tree
columns seem to work properly.  I believe this problem showed up as of RC3 and
also occurs in the latest nightly.

Comment 1

[arman]

Attachment: XUL tree events problem

A sub-problem of this bug is that it prevents proper handling of drag-drop
events.  For instance, dropping something on the area of the tree column header
beheaves as expected.  But, dragover in other areas is rejected.

Comment 2

[Max Kanat-Alexander]

1) Does this bug still happen on a recent nightly? I couldn't tell, because:

2) Could you give us steps to reproduce the bug with the test case?
3) Could you give us an "Expected Results" and "Actual Results"?

-M

Comment 3

[Max Kanat-Alexander]

*SPAM*: CC'ing myself.

Comment 4

[arman]

In reply to your questions:

* Yes the bug is still there in the latest nightly.

* To reproduce, just view the (XUL tree events problem) attachment in Mozilla. 

* The expected result is that tree's components should not be visible as they
are stacked underneath the button.  i.e. We should only be able to see and
interact with a large button on the screen.  The actual result is that I see the
tree items and I'm able to click on and select them.

Comment 5

[Boris Zbarsky [:bzbarsky]]

Confirming.  Jan, could you take a look at this?  Happens on Linux too.

Comment 6

[Neil Deakin]

No longer valid I think.