40003 - mousedown on dropdown listbox, mouseup elsewhere triggers onclick

Status: VERIFIED DUPLICATE of bug 40382

(Core :: DOM: Core & HTML, defect, P3)

Description

[Jesse Ruderman]

1. load attachment to bug 39985
2. mousedown on the dropdown listbox in the light gray area
3. mouseup somewhere else on the page

result: onmousedown, onmouseup, onclick

expected: same as above, but onclick shouldn't trigger

Comment 1

[Johnny Stenback (:jst)]

rods, I believe this one belongs to you.

Comment 2

[rods (gone)]

Please provide a simple testcase for onclick and onselect, I am seeing the 
problem.

Comment 3

[Jesse Ruderman]

Attachment: test case

Comment 4

[Jesse Ruderman]

onselect is for for text inputs, right?

Comment 5

[rods (gone)]

This is related to to, but a different bug than 40382.

On PreHandleEvent SetClickCount is called which makes sure the down and up 
content pointers match and clear the click count if they do not (the cause of 
bug 40382).

The problem with this bug is the PreHandleEvent correctly "kills" the dispatch 
of the click event (by setting the clickcount to 0, but the PostHandleEvent does 
not call SetClickCount so the event always gets dispatched. 

Comment 6

[rods (gone)]

Adding a call to SetClickCount on line 835 seems to fix this problem, but I am 
not sure what else it or may not break.

      SetClickCount(aPresContext, (nsMouseEvent*)aEvent, aStatus);

Comment 7

[rods (gone)]

reassigning to joki cc'ing pollmann,saari

This is probably nsbeta2 or FCS

Comment 8

[rods (gone)]

I'll try this again

Comment 9

[rods (gone)]

taking this back

Comment 10

[rods (gone)]

This is the same issue as 40382. It knowing how to enable and disable the 
sending of the onclick depending on whether the mouse is released on or off the 
select.

*** This bug has been marked as a duplicate of 40382 ***

Comment 11

[Prashant Desale]

Verified Duplicate.